services/java/com/android/server/am/ActivityManagerService.java

/*
 * Copyright (C) 2006-2008 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.server.am;

import static android.content.pm.PackageManager.PERMISSION_GRANTED;

import com.android.internal.R;
import com.android.internal.os.BatteryStatsImpl;
import com.android.internal.os.ProcessStats;
import com.android.server.AppOpsService;
import com.android.server.AttributeCache;
import com.android.server.IntentResolver;
import com.android.server.ProcessMap;
import com.android.server.SystemServer;
import com.android.server.Watchdog;
import com.android.server.am.ActivityStack.ActivityState;
import com.android.server.pm.UserManagerService;
import com.android.server.wm.AppTransition;
import com.android.server.wm.WindowManagerService;

import dalvik.system.Zygote;

import android.app.Activity;
import android.app.ActivityManager;
import android.app.ActivityManagerNative;
import android.app.ActivityOptions;
import android.app.ActivityThread;
import android.app.AlertDialog;
import android.app.AppGlobals;
import android.app.ApplicationErrorReport;
import android.app.Dialog;
import android.app.IActivityController;
import android.app.IApplicationThread;
import android.app.IInstrumentationWatcher;
import android.app.INotificationManager;
import android.app.IProcessObserver;
import android.app.IServiceConnection;
import android.app.IStopUserCallback;
import android.app.IThumbnailReceiver;
import android.app.IUiAutomationConnection;
import android.app.IUserSwitchObserver;
import android.app.Instrumentation;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.backup.IBackupManager;
import android.content.ActivityNotFoundException;
import android.content.BroadcastReceiver;
import android.content.ClipData;
import android.content.ComponentCallbacks2;
import android.content.ComponentName;
import android.content.ContentProvider;
import android.content.ContentResolver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.IContentProvider;
import android.content.IIntentReceiver;
import android.content.IIntentSender;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.IntentSender;
import android.content.pm.ActivityInfo;
import android.content.pm.ApplicationInfo;
import android.content.pm.ConfigurationInfo;
import android.content.pm.IPackageDataObserver;
import android.content.pm.IPackageManager;
import android.content.pm.InstrumentationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.UserInfo;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.pm.PathPermission;
import android.content.pm.ProviderInfo;
import android.content.pm.ResolveInfo;
import android.content.pm.ServiceInfo;
import android.content.res.CompatibilityInfo;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.net.Proxy;
import android.net.ProxyProperties;
import android.net.Uri;
import android.os.Binder;
import android.os.Build;
import android.os.Bundle;
import android.os.Debug;
import android.os.DropBoxManager;
import android.os.Environment;
import android.os.FileObserver;
import android.os.FileUtils;
import android.os.Handler;
import android.os.IBinder;
import android.os.IPermissionController;
import android.os.IRemoteCallback;
import android.os.IUserManager;
import android.os.Looper;
import android.os.Message;
import android.os.Parcel;
import android.os.ParcelFileDescriptor;
import android.os.Process;
import android.os.RemoteCallbackList;
import android.os.RemoteException;
import android.os.SELinux;
import android.os.ServiceManager;
import android.os.StrictMode;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.os.UpdateLock;
import android.os.UserHandle;
import android.provider.Settings;
import android.text.format.Time;
import android.util.EventLog;
import android.util.Log;
import android.util.Pair;
import android.util.PrintWriterPrinter;
import android.util.Slog;
import android.util.SparseArray;
import android.util.TimeUtils;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.WindowManager;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicLong;

public final class ActivityManagerService  extends ActivityManagerNative
        implements Watchdog.Monitor, BatteryStatsImpl.BatteryCallback {
    private static final String USER_DATA_DIR = "/data/user/";
    static final String TAG = "ActivityManager";
    static final String TAG_MU = "ActivityManagerServiceMU";
    static final boolean DEBUG = false;
    static final boolean localLOGV = DEBUG;
    static final boolean DEBUG_SWITCH = localLOGV || false;
    static final boolean DEBUG_TASKS = localLOGV || false;
    static final boolean DEBUG_THUMBNAILS = localLOGV || false;
    static final boolean DEBUG_PAUSE = localLOGV || false;
    static final boolean DEBUG_OOM_ADJ = localLOGV || false;
    static final boolean DEBUG_TRANSITION = localLOGV || false;
    static final boolean DEBUG_BROADCAST = localLOGV || false;
    static final boolean DEBUG_BACKGROUND_BROADCAST = DEBUG_BROADCAST || false;
    static final boolean DEBUG_BROADCAST_LIGHT = DEBUG_BROADCAST || false;
    static final boolean DEBUG_SERVICE = localLOGV || false;
    static final boolean DEBUG_SERVICE_EXECUTING = localLOGV || false;
    static final boolean DEBUG_VISBILITY = localLOGV || false;
    static final boolean DEBUG_PROCESSES = localLOGV || false;
    static final boolean DEBUG_PROCESS_OBSERVERS = localLOGV || false;
    static final boolean DEBUG_CLEANUP = localLOGV || false;
    static final boolean DEBUG_PROVIDER = localLOGV || false;
    static final boolean DEBUG_URI_PERMISSION = localLOGV || false;
    static final boolean DEBUG_USER_LEAVING = localLOGV || false;
    static final boolean DEBUG_RESULTS = localLOGV || false;
    static final boolean DEBUG_BACKUP = localLOGV || false;
    static final boolean DEBUG_CONFIGURATION = localLOGV || false;
    static final boolean DEBUG_POWER = localLOGV || false;
    static final boolean DEBUG_POWER_QUICK = DEBUG_POWER || false;
    static final boolean DEBUG_MU = localLOGV || false;
    static final boolean DEBUG_IMMERSIVE = localLOGV || false;
    static final boolean VALIDATE_TOKENS = false;
    static final boolean SHOW_ACTIVITY_START_TIME = true;
    
    // Control over CPU and battery monitoring.
    static final long BATTERY_STATS_TIME = 30*60*1000;      // write battery stats every 30 minutes.
    static final boolean MONITOR_CPU_USAGE = true;
    static final long MONITOR_CPU_MIN_TIME = 5*1000;        // don't sample cpu less than every 5 seconds.
    static final long MONITOR_CPU_MAX_TIME = 0x0fffffff;    // wait possibly forever for next cpu sample.
    static final boolean MONITOR_THREAD_CPU_USAGE = false;

    // The flags that are set for all calls we make to the package manager.
    static final int STOCK_PM_FLAGS = PackageManager.GET_SHARED_LIBRARY_FILES;
    
    private static final String SYSTEM_DEBUGGABLE = "ro.debuggable";

    static final boolean IS_USER_BUILD = "user".equals(Build.TYPE);

    // Maximum number of recent tasks that we can remember.
    static final int MAX_RECENT_TASKS = 20;
    
    // Amount of time after a call to stopAppSwitches() during which we will
    // prevent further untrusted switches from happening.
    static final long APP_SWITCH_DELAY_TIME = 5*1000;

    // How long we wait for a launched process to attach to the activity manager
    // before we decide it's never going to come up for real.
    static final int PROC_START_TIMEOUT = 10*1000;

    // How long we wait for a launched process to attach to the activity manager
    // before we decide it's never going to come up for real, when the process was
    // started with a wrapper for instrumentation (such as Valgrind) because it
    // could take much longer than usual.
    static final int PROC_START_TIMEOUT_WITH_WRAPPER = 300*1000;

    // How long to wait after going idle before forcing apps to GC.
    static final int GC_TIMEOUT = 5*1000;

    // The minimum amount of time between successive GC requests for a process.
    static final int GC_MIN_INTERVAL = 60*1000;

    // The rate at which we check for apps using excessive power -- 15 mins.
    static final int POWER_CHECK_DELAY = (DEBUG_POWER_QUICK ? 2 : 15) * 60*1000;

    // The minimum sample duration we will allow before deciding we have
    // enough data on wake locks to start killing things.
    static final int WAKE_LOCK_MIN_CHECK_DURATION = (DEBUG_POWER_QUICK ? 1 : 5) * 60*1000;

    // The minimum sample duration we will allow before deciding we have
    // enough data on CPU usage to start killing things.
    static final int CPU_MIN_CHECK_DURATION = (DEBUG_POWER_QUICK ? 1 : 5) * 60*1000;

    // How long we allow a receiver to run before giving up on it.
    static final int BROADCAST_FG_TIMEOUT = 10*1000;
    static final int BROADCAST_BG_TIMEOUT = 60*1000;

    // How long we wait until we timeout on key dispatching.
    static final int KEY_DISPATCHING_TIMEOUT = 5*1000;

    // How long we wait until we timeout on key dispatching during instrumentation.
    static final int INSTRUMENTATION_KEY_DISPATCHING_TIMEOUT = 60*1000;

    // Amount of time we wait for observers to handle a user switch before
    // giving up on them and unfreezing the screen.
    static final int USER_SWITCH_TIMEOUT = 2*1000;

    // Maximum number of users we allow to be running at a time.
    static final int MAX_RUNNING_USERS = 3;

    // How long to wait in getTopActivityExtras for the activity to respond with the result.
    static final int PENDING_ACTIVITY_RESULT_TIMEOUT = 2*2000;

    static final int MY_PID = Process.myPid();
    
    static final String[] EMPTY_STRING_ARRAY = new String[0];

    public ActivityStack mMainStack;

    private final boolean mHeadless;

    // Whether we should show our dialogs (ANR, crash, etc) or just perform their
    // default actuion automatically.  Important for devices without direct input
    // devices.
    private boolean mShowDialogs = true;

    /**
     * Description of a request to start a new activity, which has been held
     * due to app switches being disabled.
     */
    static class PendingActivityLaunch {
        ActivityRecord r;
        ActivityRecord sourceRecord;
        int startFlags;
    }
    
    final ArrayList<PendingActivityLaunch> mPendingActivityLaunches
            = new ArrayList<PendingActivityLaunch>();
    

    BroadcastQueue mFgBroadcastQueue;
    BroadcastQueue mBgBroadcastQueue;
    // Convenient for easy iteration over the queues. Foreground is first
    // so that dispatch of foreground broadcasts gets precedence.
    final BroadcastQueue[] mBroadcastQueues = new BroadcastQueue[2];

    BroadcastQueue broadcastQueueForIntent(Intent intent) {
        final boolean isFg = (intent.getFlags() & Intent.FLAG_RECEIVER_FOREGROUND) != 0;
        if (DEBUG_BACKGROUND_BROADCAST) {
            Slog.i(TAG, "Broadcast intent " + intent + " on "
                    + (isFg ? "foreground" : "background")
                    + " queue");
        }
        return (isFg) ? mFgBroadcastQueue : mBgBroadcastQueue;
    }

    BroadcastRecord broadcastRecordForReceiverLocked(IBinder receiver) {
        for (BroadcastQueue queue : mBroadcastQueues) {
            BroadcastRecord r = queue.getMatchingOrderedReceiver(receiver);
            if (r != null) {
                return r;
            }
        }
        return null;
    }

    /**
     * Activity we have told the window manager to have key focus.
     */
    ActivityRecord mFocusedActivity = null;

    /**
     * List of intents that were used to start the most recent tasks.
     */
    final ArrayList<TaskRecord> mRecentTasks = new ArrayList<TaskRecord>();

    public class PendingActivityExtras extends Binder implements Runnable {
        public final ActivityRecord activity;
        public boolean haveResult = false;
        public Bundle result = null;
        public PendingActivityExtras(ActivityRecord _activity) {
            activity = _activity;
        }
        @Override
        public void run() {
            Slog.w(TAG, "getTopActivityExtras failed: timeout retrieving from " + activity);
            synchronized (this) {
                haveResult = true;
                notifyAll();
            }
        }
    }

    final ArrayList<PendingActivityExtras> mPendingActivityExtras
            = new ArrayList<PendingActivityExtras>();

    /**
     * Process management.
     */
    final ProcessList mProcessList = new ProcessList();

    /**
     * All of the applications we currently have running organized by name.
     * The keys are strings of the application package name (as
     * returned by the package manager), and the keys are ApplicationRecord
     * objects.
     */
    final ProcessMap<ProcessRecord> mProcessNames = new ProcessMap<ProcessRecord>();

    /**
     * The currently running isolated processes.
     */
    final SparseArray<ProcessRecord> mIsolatedProcesses = new SparseArray<ProcessRecord>();

    /**
     * Counter for assigning isolated process uids, to avoid frequently reusing the
     * same ones.
     */
    int mNextIsolatedProcessUid = 0;

    /**
     * The currently running heavy-weight process, if any.
     */
    ProcessRecord mHeavyWeightProcess = null;
    
    /**
     * The last time that various processes have crashed.
     */
    final ProcessMap<Long> mProcessCrashTimes = new ProcessMap<Long>();

    /**
     * Set of applications that we consider to be bad, and will reject
     * incoming broadcasts from (which the user has no control over).
     * Processes are added to this set when they have crashed twice within
     * a minimum amount of time; they are removed from it when they are
     * later restarted (hopefully due to some user action).  The value is the
     * time it was added to the list.
     */
    final ProcessMap<Long> mBadProcesses = new ProcessMap<Long>();

    /**
     * All of the processes we currently have running organized by pid.
     * The keys are the pid running the application.
     *
     * <p>NOTE: This object is protected by its own lock, NOT the global
     * activity manager lock!
     */
    final SparseArray<ProcessRecord> mPidsSelfLocked = new SparseArray<ProcessRecord>();

    /**
     * All of the processes that have been forced to be foreground.  The key
     * is the pid of the caller who requested it (we hold a death
     * link on it).
     */
    abstract class ForegroundToken implements IBinder.DeathRecipient {
        int pid;
        IBinder token;
    }
    final SparseArray<ForegroundToken> mForegroundProcesses
            = new SparseArray<ForegroundToken>();
    
    /**
     * List of records for processes that someone had tried to start before the
     * system was ready.  We don't start them at that point, but ensure they
     * are started by the time booting is complete.
     */
    final ArrayList<ProcessRecord> mProcessesOnHold
            = new ArrayList<ProcessRecord>();

    /**
     * List of persistent applications that are in the process
     * of being started.
     */
    final ArrayList<ProcessRecord> mPersistentStartingProcesses
            = new ArrayList<ProcessRecord>();

    /**
     * Processes that are being forcibly torn down.
     */
    final ArrayList<ProcessRecord> mRemovedProcesses
            = new ArrayList<ProcessRecord>();

    /**
     * List of running applications, sorted by recent usage.
     * The first entry in the list is the least recently used.
     * It contains ApplicationRecord objects.  This list does NOT include
     * any persistent application records (since we never want to exit them).
     */
    final ArrayList<ProcessRecord> mLruProcesses
            = new ArrayList<ProcessRecord>();

    /**
     * List of processes that should gc as soon as things are idle.
     */
    final ArrayList<ProcessRecord> mProcessesToGc
            = new ArrayList<ProcessRecord>();

    /**
     * This is the process holding what we currently consider to be
     * the "home" activity.
     */
    ProcessRecord mHomeProcess;
    
    /**
     * This is the process holding the activity the user last visited that
     * is in a different process from the one they are currently in.
     */
    ProcessRecord mPreviousProcess;

    /**
     * The time at which the previous process was last visible.
     */
    long mPreviousProcessVisibleTime;

    /**
     * Which uses have been started, so are allowed to run code.
     */
    final SparseArray<UserStartedState> mStartedUsers = new SparseArray<UserStartedState>();

    /**
     * LRU list of history of current users.  Most recently current is at the end.
     */
    final ArrayList<Integer> mUserLru = new ArrayList<Integer>();

    /**
     * Constant array of the users that are currently started.
     */
    int[] mStartedUserArray = new int[] { 0 };

    /**
     * Registered observers of the user switching mechanics.
     */
    final RemoteCallbackList<IUserSwitchObserver> mUserSwitchObservers
            = new RemoteCallbackList<IUserSwitchObserver>();

    /**
     * Currently active user switch.
     */
    Object mCurUserSwitchCallback;

    /**
     * Packages that the user has asked to have run in screen size
     * compatibility mode instead of filling the screen.
     */
    final CompatModePackages mCompatModePackages;

    /**
     * Set of PendingResultRecord objects that are currently active.
     */
    final HashSet mPendingResultRecords = new HashSet();

    /**
     * Set of IntentSenderRecord objects that are currently active.
     */
    final HashMap<PendingIntentRecord.Key, WeakReference<PendingIntentRecord>> mIntentSenderRecords
            = new HashMap<PendingIntentRecord.Key, WeakReference<PendingIntentRecord>>();

    /**
     * Fingerprints (hashCode()) of stack traces that we've
     * already logged DropBox entries for.  Guarded by itself.  If
     * something (rogue user app) forces this over
     * MAX_DUP_SUPPRESSED_STACKS entries, the contents are cleared.
     */
    private final HashSet<Integer> mAlreadyLoggedViolatedStacks = new HashSet<Integer>();
    private static final int MAX_DUP_SUPPRESSED_STACKS = 5000;

    /**
     * Strict Mode background batched logging state.
     *
     * The string buffer is guarded by itself, and its lock is also
     * used to determine if another batched write is already
     * in-flight.
     */
    private final StringBuilder mStrictModeBuffer = new StringBuilder();

    /**
     * Keeps track of all IIntentReceivers that have been registered for
     * broadcasts.  Hash keys are the receiver IBinder, hash value is
     * a ReceiverList.
     */
    final HashMap mRegisteredReceivers = new HashMap();

    /**
     * Resolver for broadcast intents to registered receivers.
     * Holds BroadcastFilter (subclass of IntentFilter).
     */
    final IntentResolver<BroadcastFilter, BroadcastFilter> mReceiverResolver
            = new IntentResolver<BroadcastFilter, BroadcastFilter>() {
        @Override
        protected boolean allowFilterResult(
                BroadcastFilter filter, List<BroadcastFilter> dest) {
            IBinder target = filter.receiverList.receiver.asBinder();
            for (int i=dest.size()-1; i>=0; i--) {
                if (dest.get(i).receiverList.receiver.asBinder() == target) {
                    return false;
                }
            }
            return true;
        }

        @Override
        protected BroadcastFilter newResult(BroadcastFilter filter, int match, int userId) {
            if (userId == UserHandle.USER_ALL || filter.owningUserId == UserHandle.USER_ALL
                    || userId == filter.owningUserId) {
                return super.newResult(filter, match, userId);
            }
            return null;
        }

        @Override
        protected BroadcastFilter[] newArray(int size) {
            return new BroadcastFilter[size];
        }

        @Override
        protected String packageForFilter(BroadcastFilter filter) {
            return filter.packageName;
        }
    };

    /**
     * State of all active sticky broadcasts per user.  Keys are the action of the
     * sticky Intent, values are an ArrayList of all broadcasted intents with
     * that action (which should usually be one).  The SparseArray is keyed
     * by the user ID the sticky is for, and can include UserHandle.USER_ALL
     * for stickies that are sent to all users.
     */
    final SparseArray<HashMap<String, ArrayList<Intent>>> mStickyBroadcasts =
            new SparseArray<HashMap<String, ArrayList<Intent>>>();

    final ActiveServices mServices;

    /**
     * Backup/restore process management
     */
    String mBackupAppName = null;
    BackupRecord mBackupTarget = null;

    /**
     * List of PendingThumbnailsRecord objects of clients who are still
     * waiting to receive all of the thumbnails for a task.
     */
    final ArrayList mPendingThumbnails = new ArrayList();

    /**
     * List of HistoryRecord objects that have been finished and must
     * still report back to a pending thumbnail receiver.
     */
    final ArrayList mCancelledThumbnails = new ArrayList();

    final ProviderMap mProviderMap;

    /**
     * List of content providers who have clients waiting for them.  The
     * application is currently being launched and the provider will be
     * removed from this list once it is published.
     */
    final ArrayList<ContentProviderRecord> mLaunchingProviders
            = new ArrayList<ContentProviderRecord>();

    /**
     * Global set of specific Uri permissions that have been granted.
     */
    final private SparseArray<HashMap<Uri, UriPermission>> mGrantedUriPermissions
            = new SparseArray<HashMap<Uri, UriPermission>>();

    CoreSettingsObserver mCoreSettingsObserver;

    /**
     * Thread-local storage used to carry caller permissions over through
     * indirect content-provider access.
     */
    private class Identity {
        public int pid;
        public int uid;

        Identity(int _pid, int _uid) {
            pid = _pid;
            uid = _uid;
        }
    }

    private static ThreadLocal<Identity> sCallerIdentity = new ThreadLocal<Identity>();

    /**
     * All information we have collected about the runtime performance of
     * any user id that can impact battery performance.
     */
    final BatteryStatsService mBatteryStatsService;
    
    /**
     * Information about component usage
     */
    final UsageStatsService mUsageStatsService;
    
    /**
     * Information about and control over application operations
     */
    final AppOpsService mAppOpsService;

    /**
     * Current configuration information.  HistoryRecord objects are given
     * a reference to this object to indicate which configuration they are
     * currently running in, so this object must be kept immutable.
     */
    Configuration mConfiguration = new Configuration();

    /**
     * Current sequencing integer of the configuration, for skipping old
     * configurations.
     */
    int mConfigurationSeq = 0;
    
    /**
     * Hardware-reported OpenGLES version.
     */
    final int GL_ES_VERSION;

    /**
     * List of initialization arguments to pass to all processes when binding applications to them.
     * For example, references to the commonly used services.
     */
    HashMap<String, IBinder> mAppBindArgs;

    /**
     * Temporary to avoid allocations.  Protected by main lock.
     */
    final StringBuilder mStringBuilder = new StringBuilder(256);
    
    /**
     * Used to control how we initialize the service.
     */
    boolean mStartRunning = false;
    ComponentName mTopComponent;
    String mTopAction;
    String mTopData;
    boolean mProcessesReady = false;
    boolean mSystemReady = false;
    boolean mBooting = false;
    boolean mWaitingUpdate = false;
    boolean mDidUpdate = false;
    boolean mOnBattery = false;
    boolean mLaunchWarningShown = false;

    Context mContext;

    int mFactoryTest;

    boolean mCheckedForSetup;
    
    /**
     * The time at which we will allow normal application switches again,
     * after a call to {@link #stopAppSwitches()}.
     */
    long mAppSwitchesAllowedTime;

    /**
     * This is set to true after the first switch after mAppSwitchesAllowedTime
     * is set; any switches after that will clear the time.
     */
    boolean mDidAppSwitch;
    
    /**
     * Last time (in realtime) at which we checked for power usage.
     */
    long mLastPowerCheckRealtime;

    /**
     * Last time (in uptime) at which we checked for power usage.
     */
    long mLastPowerCheckUptime;

    /**
     * Set while we are wanting to sleep, to prevent any
     * activities from being started/resumed.
     */
    boolean mSleeping = false;

    /**
     * State of external calls telling us if the device is asleep.
     */
    boolean mWentToSleep = false;

    /**
     * State of external call telling us if the lock screen is shown.
     */
    boolean mLockScreenShown = false;

    /**
     * Set if we are shutting down the system, similar to sleeping.
     */
    boolean mShuttingDown = false;

    /**
     * Task identifier that activities are currently being started
     * in.  Incremented each time a new task is created.
     * todo: Replace this with a TokenSpace class that generates non-repeating
     * integers that won't wrap.
     */
    int mCurTask = 1;

    /**
     * Current sequence id for oom_adj computation traversal.
     */
    int mAdjSeq = 0;

    /**
     * Current sequence id for process LRU updating.
     */
    int mLruSeq = 0;

    /**
     * Keep track of the non-hidden/empty process we last found, to help
     * determine how to distribute hidden/empty processes next time.
     */
    int mNumNonHiddenProcs = 0;

    /**
     * Keep track of the number of hidden procs, to balance oom adj
     * distribution between those and empty procs.
     */
    int mNumHiddenProcs = 0;

    /**
     * Keep track of the number of service processes we last found, to
     * determine on the next iteration which should be B services.
     */
    int mNumServiceProcs = 0;
    int mNewNumServiceProcs = 0;

    /**
     * System monitoring: number of processes that died since the last
     * N procs were started.
     */
    int[] mProcDeaths = new int[20];
    
    /**
     * This is set if we had to do a delayed dexopt of an app before launching
     * it, to increasing the ANR timeouts in that case.
     */
    boolean mDidDexOpt;
    
    String mDebugApp = null;
    boolean mWaitForDebugger = false;
    boolean mDebugTransient = false;
    String mOrigDebugApp = null;
    boolean mOrigWaitForDebugger = false;
    boolean mAlwaysFinishActivities = false;
    IActivityController mController = null;
    String mProfileApp = null;
    ProcessRecord mProfileProc = null;
    String mProfileFile;
    ParcelFileDescriptor mProfileFd;
    int mProfileType = 0;
    boolean mAutoStopProfiler = false;
    String mOpenGlTraceApp = null;

    static class ProcessChangeItem {
        static final int CHANGE_ACTIVITIES = 1<<0;
        static final int CHANGE_IMPORTANCE= 1<<1;
        int changes;
        int uid;
        int pid;
        int importance;
        boolean foregroundActivities;
    }

    final RemoteCallbackList<IProcessObserver> mProcessObservers
            = new RemoteCallbackList<IProcessObserver>();
    ProcessChangeItem[] mActiveProcessChanges = new ProcessChangeItem[5];

    final ArrayList<ProcessChangeItem> mPendingProcessChanges
            = new ArrayList<ProcessChangeItem>();
    final ArrayList<ProcessChangeItem> mAvailProcessChanges
            = new ArrayList<ProcessChangeItem>();

    /**
     * Runtime statistics collection thread.  This object's lock is used to
     * protect all related state.
     */
    final Thread mProcessStatsThread;
    
    /**
     * Used to collect process stats when showing not responding dialog.
     * Protected by mProcessStatsThread.
     */
    final ProcessStats mProcessStats = new ProcessStats(
            MONITOR_THREAD_CPU_USAGE);
    final AtomicLong mLastCpuTime = new AtomicLong(0);
    final AtomicBoolean mProcessStatsMutexFree = new AtomicBoolean(true);

    long mLastWriteTime = 0;

    /**
     * Used to retain an update lock when the foreground activity is in
     * immersive mode.
     */
    final UpdateLock mUpdateLock = new UpdateLock("immersive");

    /**
     * Set to true after the system has finished booting.
     */
    boolean mBooted = false;

    int mProcessLimit = ProcessList.MAX_HIDDEN_APPS;
    int mProcessLimitOverride = -1;

    WindowManagerService mWindowManager;

    static ActivityManagerService mSelf;
    static ActivityThread mSystemThread;

    private int mCurrentUserId = 0;
    private int[] mCurrentUserArray = new int[] { 0 };
    private UserManagerService mUserManager;

    private final class AppDeathRecipient implements IBinder.DeathRecipient {
        final ProcessRecord mApp;
        final int mPid;
        final IApplicationThread mAppThread;

        AppDeathRecipient(ProcessRecord app, int pid,
                IApplicationThread thread) {
            if (localLOGV) Slog.v(
                TAG, "New death recipient " + this
                + " for thread " + thread.asBinder());
            mApp = app;
            mPid = pid;
            mAppThread = thread;
        }

        public void binderDied() {
            if (localLOGV) Slog.v(
                TAG, "Death received in " + this
                + " for thread " + mAppThread.asBinder());
            synchronized(ActivityManagerService.this) {
                appDiedLocked(mApp, mPid, mAppThread);
            }
        }
    }

    static final int SHOW_ERROR_MSG = 1;
    static final int SHOW_NOT_RESPONDING_MSG = 2;
    static final int SHOW_FACTORY_ERROR_MSG = 3;
    static final int UPDATE_CONFIGURATION_MSG = 4;
    static final int GC_BACKGROUND_PROCESSES_MSG = 5;
    static final int WAIT_FOR_DEBUGGER_MSG = 6;
    static final int SERVICE_TIMEOUT_MSG = 12;
    static final int UPDATE_TIME_ZONE = 13;
    static final int SHOW_UID_ERROR_MSG = 14;
    static final int IM_FEELING_LUCKY_MSG = 15;
    static final int PROC_START_TIMEOUT_MSG = 20;
    static final int DO_PENDING_ACTIVITY_LAUNCHES_MSG = 21;
    static final int KILL_APPLICATION_MSG = 22;
    static final int FINALIZE_PENDING_INTENT_MSG = 23;
    static final int POST_HEAVY_NOTIFICATION_MSG = 24;
    static final int CANCEL_HEAVY_NOTIFICATION_MSG = 25;
    static final int SHOW_STRICT_MODE_VIOLATION_MSG = 26;
    static final int CHECK_EXCESSIVE_WAKE_LOCKS_MSG = 27;
    static final int CLEAR_DNS_CACHE = 28;
    static final int UPDATE_HTTP_PROXY = 29;
    static final int SHOW_COMPAT_MODE_DIALOG_MSG = 30;
    static final int DISPATCH_PROCESSES_CHANGED = 31;
    static final int DISPATCH_PROCESS_DIED = 32;
    static final int REPORT_MEM_USAGE = 33;
    static final int REPORT_USER_SWITCH_MSG = 34;
    static final int CONTINUE_USER_SWITCH_MSG = 35;
    static final int USER_SWITCH_TIMEOUT_MSG = 36;
    static final int IMMERSIVE_MODE_LOCK_MSG = 37;

    static final int FIRST_ACTIVITY_STACK_MSG = 100;
    static final int FIRST_BROADCAST_QUEUE_MSG = 200;
    static final int FIRST_COMPAT_MODE_MSG = 300;

    AlertDialog mUidAlert;
    CompatModeDialog mCompatModeDialog;
    long mLastMemUsageReportTime = 0;

    final Handler mHandler = new Handler() {
        //public Handler() {
        //    if (localLOGV) Slog.v(TAG, "Handler started!");
        //}

        public void handleMessage(Message msg) {
            switch (msg.what) {
            case SHOW_ERROR_MSG: {
                HashMap data = (HashMap) msg.obj;
                boolean showBackground = Settings.Secure.getInt(mContext.getContentResolver(),
                        Settings.Secure.ANR_SHOW_BACKGROUND, 0) != 0;
                synchronized (ActivityManagerService.this) {
                    ProcessRecord proc = (ProcessRecord)data.get("app");
                    AppErrorResult res = (AppErrorResult) data.get("result");
                    if (proc != null && proc.crashDialog != null) {
                        Slog.e(TAG, "App already has crash dialog: " + proc);
                        if (res != null) {
                            res.set(0);
                        }
                        return;
                    }
                    if (!showBackground && UserHandle.getAppId(proc.uid)
                            >= Process.FIRST_APPLICATION_UID && proc.userId != mCurrentUserId
                            && proc.pid != MY_PID) {
                        Slog.w(TAG, "Skipping crash dialog of " + proc + ": background");
                        if (res != null) {
                            res.set(0);
                        }
                        return;
                    }
                    if (mShowDialogs && !mSleeping && !mShuttingDown) {
                        Dialog d = new AppErrorDialog(mContext,
                                ActivityManagerService.this, res, proc);
                        d.show();
                        proc.crashDialog = d;
                    } else {
                        // The device is asleep, so just pretend that the user
                        // saw a crash dialog and hit "force quit".
                        if (res != null) {
                            res.set(0);
                        }
                    }
                }
                
                ensureBootCompleted();
            } break;
            case SHOW_NOT_RESPONDING_MSG: {
                synchronized (ActivityManagerService.this) {
                    HashMap data = (HashMap) msg.obj;
                    ProcessRecord proc = (ProcessRecord)data.get("app");
                    if (proc != null && proc.anrDialog != null) {
                        Slog.e(TAG, "App already has anr dialog: " + proc);
                        return;
                    }
                    
                    Intent intent = new Intent("android.intent.action.ANR");
                    if (!mProcessesReady) {
                        intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY
                                | Intent.FLAG_RECEIVER_FOREGROUND);
                    }
                    broadcastIntentLocked(null, null, intent,
                            null, null, 0, null, null, null,
                            false, false, MY_PID, Process.SYSTEM_UID, 0 /* TODO: Verify */);

                    if (mShowDialogs) {
                        Dialog d = new AppNotRespondingDialog(ActivityManagerService.this,
                                mContext, proc, (ActivityRecord)data.get("activity"),
                                msg.arg1 != 0);
                        d.show();
                        proc.anrDialog = d;
                    } else {
                        // Just kill the app if there is no dialog to be shown.
                        killAppAtUsersRequest(proc, null);
                    }
                }
                
                ensureBootCompleted();
            } break;
            case SHOW_STRICT_MODE_VIOLATION_MSG: {
                HashMap<String, Object> data = (HashMap<String, Object>) msg.obj;
                synchronized (ActivityManagerService.this) {
                    ProcessRecord proc = (ProcessRecord) data.get("app");
                    if (proc == null) {
                        Slog.e(TAG, "App not found when showing strict mode dialog.");
                        break;
                    }
                    if (proc.crashDialog != null) {
                        Slog.e(TAG, "App already has strict mode dialog: " + proc);
                        return;
                    }
                    AppErrorResult res = (AppErrorResult) data.get("result");
                    if (mShowDialogs && !mSleeping && !mShuttingDown) {
                        Dialog d = new StrictModeViolationDialog(mContext,
                                ActivityManagerService.this, res, proc);
                        d.show();
                        proc.crashDialog = d;
                    } else {
                        // The device is asleep, so just pretend that the user
                        // saw a crash dialog and hit "force quit".
                        res.set(0);
                    }
                }
                ensureBootCompleted();
            } break;
            case SHOW_FACTORY_ERROR_MSG: {
                Dialog d = new FactoryErrorDialog(
                    mContext, msg.getData().getCharSequence("msg"));
                d.show();
                ensureBootCompleted();
            } break;
            case UPDATE_CONFIGURATION_MSG: {
                final ContentResolver resolver = mContext.getContentResolver();
                Settings.System.putConfiguration(resolver, (Configuration)msg.obj);
            } break;
            case GC_BACKGROUND_PROCESSES_MSG: {
                synchronized (ActivityManagerService.this) {
                    performAppGcsIfAppropriateLocked();
                }
            } break;
            case WAIT_FOR_DEBUGGER_MSG: {
                synchronized (ActivityManagerService.this) {
                    ProcessRecord app = (ProcessRecord)msg.obj;
                    if (msg.arg1 != 0) {
                        if (!app.waitedForDebugger) {
                            Dialog d = new AppWaitingForDebuggerDialog(
                                    ActivityManagerService.this,
                                    mContext, app);
                            app.waitDialog = d;
                            app.waitedForDebugger = true;
                            d.show();
                        }
                    } else {
                        if (app.waitDialog != null) {
                            app.waitDialog.dismiss();
                            app.waitDialog = null;
                        }
                    }
                }
            } break;
            case SERVICE_TIMEOUT_MSG: {
                if (mDidDexOpt) {
                    mDidDexOpt = false;
                    Message nmsg = mHandler.obtainMessage(SERVICE_TIMEOUT_MSG);
                    nmsg.obj = msg.obj;
                    mHandler.sendMessageDelayed(nmsg, ActiveServices.SERVICE_TIMEOUT);
                    return;
                }
                mServices.serviceTimeout((ProcessRecord)msg.obj);
            } break;
            case UPDATE_TIME_ZONE: {
                synchronized (ActivityManagerService.this) {
                    for (int i = mLruProcesses.size() - 1 ; i >= 0 ; i--) {
                        ProcessRecord r = mLruProcesses.get(i);
                        if (r.thread != null) {
                            try {
                                r.thread.updateTimeZone();
                            } catch (RemoteException ex) {
                                Slog.w(TAG, "Failed to update time zone for: " + r.info.processName);
                            }
                        }
                    }
                }
            } break;
            case CLEAR_DNS_CACHE: {
                synchronized (ActivityManagerService.this) {
                    for (int i = mLruProcesses.size() - 1 ; i >= 0 ; i--) {
                        ProcessRecord r = mLruProcesses.get(i);
                        if (r.thread != null) {
                            try {
                                r.thread.clearDnsCache();
                            } catch (RemoteException ex) {
                                Slog.w(TAG, "Failed to clear dns cache for: " + r.info.processName);
                            }
                        }
                    }
                }
            } break;
            case UPDATE_HTTP_PROXY: {
                ProxyProperties proxy = (ProxyProperties)msg.obj;
                String host = "";
                String port = "";
                String exclList = "";
                if (proxy != null) {
                    host = proxy.getHost();
                    port = Integer.toString(proxy.getPort());
                    exclList = proxy.getExclusionList();
                }
                synchronized (ActivityManagerService.this) {
                    for (int i = mLruProcesses.size() - 1 ; i >= 0 ; i--) {
                        ProcessRecord r = mLruProcesses.get(i);
                        if (r.thread != null) {
                            try {
                                r.thread.setHttpProxy(host, port, exclList);
                            } catch (RemoteException ex) {
                                Slog.w(TAG, "Failed to update http proxy for: " +
                                        r.info.processName);
                            }
                        }
                    }
                }
            } break;
            case SHOW_UID_ERROR_MSG: {
                String title = "System UIDs Inconsistent";
                String text = "UIDs on the system are inconsistent, you need to wipe your"
                        + " data partition or your device will be unstable.";
                Log.e(TAG, title + ": " + text);
                if (mShowDialogs) {
                    // XXX This is a temporary dialog, no need to localize.
                    AlertDialog d = new BaseErrorDialog(mContext);
                    d.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ERROR);
                    d.setCancelable(false);
                    d.setTitle(title);
                    d.setMessage(text);
                    d.setButton(DialogInterface.BUTTON_POSITIVE, "I'm Feeling Lucky",
                            mHandler.obtainMessage(IM_FEELING_LUCKY_MSG));
                    mUidAlert = d;
                    d.show();
                }
            } break;
            case IM_FEELING_LUCKY_MSG: {
                if (mUidAlert != null) {
                    mUidAlert.dismiss();
                    mUidAlert = null;
                }
            } break;
            case PROC_START_TIMEOUT_MSG: {
                if (mDidDexOpt) {
                    mDidDexOpt = false;
                    Message nmsg = mHandler.obtainMessage(PROC_START_TIMEOUT_MSG);
                    nmsg.obj = msg.obj;
                    mHandler.sendMessageDelayed(nmsg, PROC_START_TIMEOUT);
                    return;
                }
                ProcessRecord app = (ProcessRecord)msg.obj;
                synchronized (ActivityManagerService.this) {
                    processStartTimedOutLocked(app);
                }
            } break;
            case DO_PENDING_ACTIVITY_LAUNCHES_MSG: {
                synchronized (ActivityManagerService.this) {
                    doPendingActivityLaunchesLocked(true);
                }
            } break;
            case KILL_APPLICATION_MSG: {
                synchronized (ActivityManagerService.this) {
                    int appid = msg.arg1;
                    boolean restart = (msg.arg2 == 1);
                    String pkg = (String) msg.obj;
                    forceStopPackageLocked(pkg, appid, restart, false, true, false,
                            UserHandle.USER_ALL);
                }
            } break;
            case FINALIZE_PENDING_INTENT_MSG: {
                ((PendingIntentRecord)msg.obj).completeFinalize();
            } break;
            case POST_HEAVY_NOTIFICATION_MSG: {
                INotificationManager inm = NotificationManager.getService();
                if (inm == null) {
                    return;
                }
                
                ActivityRecord root = (ActivityRecord)msg.obj;
                ProcessRecord process = root.app;
                if (process == null) {
                    return;
                }
                
                try {
                    Context context = mContext.createPackageContext(process.info.packageName, 0);
                    String text = mContext.getString(R.string.heavy_weight_notification,
                            context.getApplicationInfo().loadLabel(context.getPackageManager()));
                    Notification notification = new Notification();
                    notification.icon = com.android.internal.R.drawable.stat_sys_adb; //context.getApplicationInfo().icon;
                    notification.when = 0;
                    notification.flags = Notification.FLAG_ONGOING_EVENT;
                    notification.tickerText = text;
                    notification.defaults = 0; // please be quiet
                    notification.sound = null;
                    notification.vibrate = null;
                    notification.setLatestEventInfo(context, text,
                            mContext.getText(R.string.heavy_weight_notification_detail),
                            PendingIntent.getActivityAsUser(mContext, 0, root.intent,
                                    PendingIntent.FLAG_CANCEL_CURRENT, null,
                                    new UserHandle(root.userId)));
                    
                    try {
                        int[] outId = new int[1];
                        inm.enqueueNotificationWithTag("android", "android", null,
                                R.string.heavy_weight_notification,
                                notification, outId, root.userId);
                    } catch (RuntimeException e) {
                        Slog.w(ActivityManagerService.TAG,
                                "Error showing notification for heavy-weight app", e);
                    } catch (RemoteException e) {
                    }
                } catch (NameNotFoundException e) {
                    Slog.w(TAG, "Unable to create context for heavy notification", e);
                }
            } break;
            case CANCEL_HEAVY_NOTIFICATION_MSG: {
                INotificationManager inm = NotificationManager.getService();
                if (inm == null) {
                    return;
                }
                try {
                    inm.cancelNotificationWithTag("android", null,
                            R.string.heavy_weight_notification,  msg.arg1);
                } catch (RuntimeException e) {
                    Slog.w(ActivityManagerService.TAG,
                            "Error canceling notification for service", e);
                } catch (RemoteException e) {
                }
            } break;
            case CHECK_EXCESSIVE_WAKE_LOCKS_MSG: {
                synchronized (ActivityManagerService.this) {
                    checkExcessivePowerUsageLocked(true);
                    removeMessages(CHECK_EXCESSIVE_WAKE_LOCKS_MSG);
                    Message nmsg = obtainMessage(CHECK_EXCESSIVE_WAKE_LOCKS_MSG);
                    sendMessageDelayed(nmsg, POWER_CHECK_DELAY);
                }
            } break;
            case SHOW_COMPAT_MODE_DIALOG_MSG: {
                synchronized (ActivityManagerService.this) {
                    ActivityRecord ar = (ActivityRecord)msg.obj;
                    if (mCompatModeDialog != null) {
                        if (mCompatModeDialog.mAppInfo.packageName.equals(
                                ar.info.applicationInfo.packageName)) {
                            return;
                        }
                        mCompatModeDialog.dismiss();
                        mCompatModeDialog = null;
                    }
                    if (ar != null && false) {
                        if (mCompatModePackages.getPackageAskCompatModeLocked(
                                ar.packageName)) {
                            int mode = mCompatModePackages.computeCompatModeLocked(
                                    ar.info.applicationInfo);
                            if (mode == ActivityManager.COMPAT_MODE_DISABLED
                                    || mode == ActivityManager.COMPAT_MODE_ENABLED) {
                                mCompatModeDialog = new CompatModeDialog(
                                        ActivityManagerService.this, mContext,
                                        ar.info.applicationInfo);
                                mCompatModeDialog.show();
                            }
                        }
                    }
                }
                break;
            }
            case DISPATCH_PROCESSES_CHANGED: {
                dispatchProcessesChanged();
                break;
            }
            case DISPATCH_PROCESS_DIED: {
                final int pid = msg.arg1;
                final int uid = msg.arg2;
                dispatchProcessDied(pid, uid);
                break;
            }
            case REPORT_MEM_USAGE: {
                boolean isDebuggable = "1".equals(SystemProperties.get(SYSTEM_DEBUGGABLE, "0"));
                if (!isDebuggable) {
                    return;
                }
                synchronized (ActivityManagerService.this) {
                    long now = SystemClock.uptimeMillis();
                    if (now < (mLastMemUsageReportTime+5*60*1000)) {
                        // Don't report more than every 5 minutes to somewhat
                        // avoid spamming.
                        return;
                    }
                    mLastMemUsageReportTime = now;
                }
                Thread thread = new Thread() {
                    @Override public void run() {
                        StringBuilder dropBuilder = new StringBuilder(1024);
                        StringBuilder logBuilder = new StringBuilder(1024);
                        StringWriter oomSw = new StringWriter();
                        PrintWriter oomPw = new PrintWriter(oomSw);
                        StringWriter catSw = new StringWriter();
                        PrintWriter catPw = new PrintWriter(catSw);
                        String[] emptyArgs = new String[] { };
                        StringBuilder tag = new StringBuilder(128);
                        StringBuilder stack = new StringBuilder(128);
                        tag.append("Low on memory -- ");
                        dumpApplicationMemoryUsage(null, oomPw, "  ", emptyArgs, true, catPw,
                                tag, stack);
                        dropBuilder.append(stack);
                        dropBuilder.append('\n');
                        dropBuilder.append('\n');
                        String oomString = oomSw.toString();
                        dropBuilder.append(oomString);
                        dropBuilder.append('\n');
                        logBuilder.append(oomString);
                        try {
                            java.lang.Process proc = Runtime.getRuntime().exec(new String[] {
                                    "procrank", });
                            final InputStreamReader converter = new InputStreamReader(
                                    proc.getInputStream());
                            BufferedReader in = new BufferedReader(converter);
                            String line;
                            while (true) {
                                line = in.readLine();
                                if (line == null) {
                                    break;
                                }
                                if (line.length() > 0) {
                                    logBuilder.append(line);
                                    logBuilder.append('\n');
                                }
                                dropBuilder.append(line);
                                dropBuilder.append('\n');
                            }
                            converter.close();
                        } catch (IOException e) {
                        }
                        synchronized (ActivityManagerService.this) {
                            catPw.println();
                            dumpProcessesLocked(null, catPw, emptyArgs, 0, false, null);
                            catPw.println();
                            mServices.dumpServicesLocked(null, catPw, emptyArgs, 0,
                                    false, false, null);
                            catPw.println();
                            dumpActivitiesLocked(null, catPw, emptyArgs, 0, false, false, null);
                        }
                        dropBuilder.append(catSw.toString());
                        addErrorToDropBox("lowmem", null, "system_server", null,
                                null, tag.toString(), dropBuilder.toString(), null, null);
                        Slog.i(TAG, logBuilder.toString());
                        synchronized (ActivityManagerService.this) {
                            long now = SystemClock.uptimeMillis();
                            if (mLastMemUsageReportTime < now) {
                                mLastMemUsageReportTime = now;
                            }
                        }
                    }
                };
                thread.start();
                break;
            }
            case REPORT_USER_SWITCH_MSG: {
                dispatchUserSwitch((UserStartedState)msg.obj, msg.arg1, msg.arg2);
                break;
            }
            case CONTINUE_USER_SWITCH_MSG: {
                continueUserSwitch((UserStartedState)msg.obj, msg.arg1, msg.arg2);
                break;
            }
            case USER_SWITCH_TIMEOUT_MSG: {
                timeoutUserSwitch((UserStartedState)msg.obj, msg.arg1, msg.arg2);
                break;
            }
            case IMMERSIVE_MODE_LOCK_MSG: {
                final boolean nextState = (msg.arg1 != 0);
                if (mUpdateLock.isHeld() != nextState) {
                    if (DEBUG_IMMERSIVE) {
                        final ActivityRecord r = (ActivityRecord) msg.obj;
                        Slog.d(TAG, "Applying new update lock state '" + nextState + "' for " + r);
                    }
                    if (nextState) {
                        mUpdateLock.acquire();
                    } else {
                        mUpdateLock.release();
                    }
                }
                break;
            }
            }
        }
    };

    public static void setSystemProcess() {
        try {
            ActivityManagerService m = mSelf;
            
            ServiceManager.addService("activity", m, true);
            ServiceManager.addService("meminfo", new MemBinder(m));
            ServiceManager.addService("gfxinfo", new GraphicsBinder(m));
            ServiceManager.addService("dbinfo", new DbBinder(m));
            if (MONITOR_CPU_USAGE) {
                ServiceManager.addService("cpuinfo", new CpuBinder(m));
            }
            ServiceManager.addService("permission", new PermissionController(m));

            ApplicationInfo info =
                mSelf.mContext.getPackageManager().getApplicationInfo(
                            "android", STOCK_PM_FLAGS);
            mSystemThread.installSystemApplicationInfo(info);
       
            synchronized (mSelf) {
                ProcessRecord app = mSelf.newProcessRecordLocked(
                        mSystemThread.getApplicationThread(), info,
                        info.processName, false);
                app.persistent = true;
                app.pid = MY_PID;
                app.maxAdj = ProcessList.SYSTEM_ADJ;
                mSelf.mProcessNames.put(app.processName, app.uid, app);
                synchronized (mSelf.mPidsSelfLocked) {
                    mSelf.mPidsSelfLocked.put(app.pid, app);
                }
                mSelf.updateLruProcessLocked(app, true);
            }
        } catch (PackageManager.NameNotFoundException e) {
            throw new RuntimeException(
                    "Unable to find android system package", e);
        }
    }

    public void setWindowManager(WindowManagerService wm) {
        mWindowManager = wm;
    }

    public static final Context main(int factoryTest) {
        AThread thr = new AThread();
        thr.start();

        synchronized (thr) {
            while (thr.mService == null) {
                try {
                    thr.wait();
                } catch (InterruptedException e) {
                }
            }
        }

        ActivityManagerService m = thr.mService;
        mSelf = m;
        ActivityThread at = ActivityThread.systemMain();
        mSystemThread = at;
        Context context = at.getSystemContext();
        context.setTheme(android.R.style.Theme_Holo);
        m.mContext = context;
        m.mFactoryTest = factoryTest;
        m.mMainStack = new ActivityStack(m, context, true, thr.mLooper);
        
        m.mBatteryStatsService.publish(context);
        m.mUsageStatsService.publish(context);
        m.mAppOpsService.publish(context);

        synchronized (thr) {
            thr.mReady = true;
            thr.notifyAll();
        }

        m.startRunning(null, null, null, null);
        
        return context;
    }

    public static ActivityManagerService self() {
        return mSelf;
    }
    
    static class AThread extends Thread {
        ActivityManagerService mService;
        Looper mLooper;
        boolean mReady = false;

        public AThread() {
            super("ActivityManager");
        }

        public void run() {
            Looper.prepare();

            android.os.Process.setThreadPriority(
                    android.os.Process.THREAD_PRIORITY_FOREGROUND);
            android.os.Process.setCanSelfBackground(false);

            ActivityManagerService m = new ActivityManagerService();

            synchronized (this) {
                mService = m;
                mLooper = Looper.myLooper();
                notifyAll();
            }

            synchronized (this) {
                while (!mReady) {
                    try {
                        wait();
                    } catch (InterruptedException e) {
                    }
                }
            }

            // For debug builds, log event loop stalls to dropbox for analysis.
            if (StrictMode.conditionallyEnableDebugLogging()) {
                Slog.i(TAG, "Enabled StrictMode logging for AThread's Looper");
            }

            Looper.loop();
        }
    }

    static class MemBinder extends Binder {
        ActivityManagerService mActivityManagerService;
        MemBinder(ActivityManagerService activityManagerService) {
            mActivityManagerService = activityManagerService;
        }

        @Override
        protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
            if (mActivityManagerService.checkCallingPermission(android.Manifest.permission.DUMP)
                    != PackageManager.PERMISSION_GRANTED) {
                pw.println("Permission Denial: can't dump meminfo from from pid="
                        + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid()
                        + " without permission " + android.Manifest.permission.DUMP);
                return;
            }

            mActivityManagerService.dumpApplicationMemoryUsage(fd, pw, "  ", args,
                    false, null, null, null);
        }
    }

    static class GraphicsBinder extends Binder {
        ActivityManagerService mActivityManagerService;
        GraphicsBinder(ActivityManagerService activityManagerService) {
            mActivityManagerService = activityManagerService;
        }

        @Override
        protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
            if (mActivityManagerService.checkCallingPermission(android.Manifest.permission.DUMP)
                    != PackageManager.PERMISSION_GRANTED) {
                pw.println("Permission Denial: can't dump gfxinfo from from pid="
                        + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid()
                        + " without permission " + android.Manifest.permission.DUMP);
                return;
            }

            mActivityManagerService.dumpGraphicsHardwareUsage(fd, pw, args);
        }
    }

    static class DbBinder extends Binder {
        ActivityManagerService mActivityManagerService;
        DbBinder(ActivityManagerService activityManagerService) {
            mActivityManagerService = activityManagerService;
        }

        @Override
        protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
            if (mActivityManagerService.checkCallingPermission(android.Manifest.permission.DUMP)
                    != PackageManager.PERMISSION_GRANTED) {
                pw.println("Permission Denial: can't dump dbinfo from from pid="
                        + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid()
                        + " without permission " + android.Manifest.permission.DUMP);
                return;
            }

            mActivityManagerService.dumpDbInfo(fd, pw, args);
        }
    }

    static class CpuBinder extends Binder {
        ActivityManagerService mActivityManagerService;
        CpuBinder(ActivityManagerService activityManagerService) {
            mActivityManagerService = activityManagerService;
        }

        @Override
        protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
            if (mActivityManagerService.checkCallingPermission(android.Manifest.permission.DUMP)
                    != PackageManager.PERMISSION_GRANTED) {
                pw.println("Permission Denial: can't dump cpuinfo from from pid="
                        + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid()
                        + " without permission " + android.Manifest.permission.DUMP);
                return;
            }

            synchronized (mActivityManagerService.mProcessStatsThread) {
                pw.print(mActivityManagerService.mProcessStats.printCurrentLoad());
                pw.print(mActivityManagerService.mProcessStats.printCurrentState(
                        SystemClock.uptimeMillis()));
            }
        }
    }

    private ActivityManagerService() {
        Slog.i(TAG, "Memory class: " + ActivityManager.staticGetMemoryClass());
        
        mFgBroadcastQueue = new BroadcastQueue(this, "foreground", BROADCAST_FG_TIMEOUT);
        mBgBroadcastQueue = new BroadcastQueue(this, "background", BROADCAST_BG_TIMEOUT);
        mBroadcastQueues[0] = mFgBroadcastQueue;
        mBroadcastQueues[1] = mBgBroadcastQueue;

        mServices = new ActiveServices(this);
        mProviderMap = new ProviderMap(this);

        File dataDir = Environment.getDataDirectory();
        File systemDir = new File(dataDir, "system");
        systemDir.mkdirs();
        mBatteryStatsService = new BatteryStatsService(new File(
                systemDir, "batterystats.bin").toString());
        mBatteryStatsService.getActiveStatistics().readLocked();
        mBatteryStatsService.getActiveStatistics().writeAsyncLocked();
        mOnBattery = DEBUG_POWER ? true
                : mBatteryStatsService.getActiveStatistics().getIsOnBattery();
        mBatteryStatsService.getActiveStatistics().setCallback(this);

        mUsageStatsService = new UsageStatsService(new File(
                systemDir, "usagestats").toString());
        mAppOpsService = new AppOpsService(new File(systemDir, "appops.xml"));
        mHeadless = "1".equals(SystemProperties.get("ro.config.headless", "0"));

        // User 0 is the first and only user that runs at boot.
        mStartedUsers.put(0, new UserStartedState(new UserHandle(0), true));
        mUserLru.add(Integer.valueOf(0));
        updateStartedUserArrayLocked();

        GL_ES_VERSION = SystemProperties.getInt("ro.opengles.version",
            ConfigurationInfo.GL_ES_VERSION_UNDEFINED);

        mConfiguration.setToDefaults();
        mConfiguration.setLocale(Locale.getDefault());

        mConfigurationSeq = mConfiguration.seq = 1;
        mProcessStats.init();
        
        mCompatModePackages = new CompatModePackages(this, systemDir);

        // Add ourself to the Watchdog monitors.
        Watchdog.getInstance().addMonitor(this);

        mProcessStatsThread = new Thread("ProcessStats") {
            public void run() {
                while (true) {
                    try {
                        try {
                            synchronized(this) {
                                final long now = SystemClock.uptimeMillis();
                                long nextCpuDelay = (mLastCpuTime.get()+MONITOR_CPU_MAX_TIME)-now;
                                long nextWriteDelay = (mLastWriteTime+BATTERY_STATS_TIME)-now;
                                //Slog.i(TAG, "Cpu delay=" + nextCpuDelay
                                //        + ", write delay=" + nextWriteDelay);
                                if (nextWriteDelay < nextCpuDelay) {
                                    nextCpuDelay = nextWriteDelay;
                                }
                                if (nextCpuDelay > 0) {
                                    mProcessStatsMutexFree.set(true);
                                    this.wait(nextCpuDelay);
                                }
                            }
                        } catch (InterruptedException e) {
                        }
                        updateCpuStatsNow();
                    } catch (Exception e) {
                        Slog.e(TAG, "Unexpected exception collecting process stats", e);
                    }
                }
            }
        };
        mProcessStatsThread.start();
    }

    @Override
    public boolean onTransact(int code, Parcel data, Parcel reply, int flags)
            throws RemoteException {
        if (code == SYSPROPS_TRANSACTION) {
            // We need to tell all apps about the system property change.
            ArrayList<IBinder> procs = new ArrayList<IBinder>();
            synchronized(this) {
                for (SparseArray<ProcessRecord> apps : mProcessNames.getMap().values()) {
                    final int NA = apps.size();
                    for (int ia=0; ia<NA; ia++) {
                        ProcessRecord app = apps.valueAt(ia);
                        if (app.thread != null) {
                            procs.add(app.thread.asBinder());
                        }
                    }
                }
            }

            int N = procs.size();
            for (int i=0; i<N; i++) {
                Parcel data2 = Parcel.obtain();
                try {
                    procs.get(i).transact(IBinder.SYSPROPS_TRANSACTION, data2, null, 0);
                } catch (RemoteException e) {
                }
                data2.recycle();
            }
        }
        try {
            return super.onTransact(code, data, reply, flags);
        } catch (RuntimeException e) {
            // The activity manager only throws security exceptions, so let's
            // log all others.
            if (!(e instanceof SecurityException)) {
                Slog.e(TAG, "Activity Manager Crash", e);
            }
            throw e;
        }
    }

    void updateCpuStats() {
        final long now = SystemClock.uptimeMillis();
        if (mLastCpuTime.get() >= now - MONITOR_CPU_MIN_TIME) {
            return;
        }
        if (mProcessStatsMutexFree.compareAndSet(true, false)) {
            synchronized (mProcessStatsThread) {
                mProcessStatsThread.notify();
            }
        }
    }

    void updateCpuStatsNow() {
        synchronized (mProcessStatsThread) {
            mProcessStatsMutexFree.set(false);
            final long now = SystemClock.uptimeMillis();
            boolean haveNewCpuStats = false;

            if (MONITOR_CPU_USAGE &&
                    mLastCpuTime.get() < (now-MONITOR_CPU_MIN_TIME)) {
                mLastCpuTime.set(now);
                haveNewCpuStats = true;
                mProcessStats.update();
                //Slog.i(TAG, mProcessStats.printCurrentState());
                //Slog.i(TAG, "Total CPU usage: "
                //        + mProcessStats.getTotalCpuPercent() + "%");

                // Slog the cpu usage if the property is set.
                if ("true".equals(SystemProperties.get("events.cpu"))) {
                    int user = mProcessStats.getLastUserTime();
                    int system = mProcessStats.getLastSystemTime();
                    int iowait = mProcessStats.getLastIoWaitTime();
                    int irq = mProcessStats.getLastIrqTime();
                    int softIrq = mProcessStats.getLastSoftIrqTime();
                    int idle = mProcessStats.getLastIdleTime();

                    int total = user + system + iowait + irq + softIrq + idle;
                    if (total == 0) total = 1;

                    EventLog.writeEvent(EventLogTags.CPU,
                            ((user+system+iowait+irq+softIrq) * 100) / total,
                            (user * 100) / total,
                            (system * 100) / total,
                            (iowait * 100) / total,
                            (irq * 100) / total,
                            (softIrq * 100) / total);
                }
            }
            
            long[] cpuSpeedTimes = mProcessStats.getLastCpuSpeedTimes();
            final BatteryStatsImpl bstats = mBatteryStatsService.getActiveStatistics();
            synchronized(bstats) {
                synchronized(mPidsSelfLocked) {
                    if (haveNewCpuStats) {
                        if (mOnBattery) {
                            int perc = bstats.startAddingCpuLocked();
                            int totalUTime = 0;
                            int totalSTime = 0;
                            final int N = mProcessStats.countStats();
                            for (int i=0; i<N; i++) {
                                ProcessStats.Stats st = mProcessStats.getStats(i);
                                if (!st.working) {
                                    continue;
                                }
                                ProcessRecord pr = mPidsSelfLocked.get(st.pid);
                                int otherUTime = (st.rel_utime*perc)/100;
                                int otherSTime = (st.rel_stime*perc)/100;
                                totalUTime += otherUTime;
                                totalSTime += otherSTime;
                                if (pr != null) {
                                    BatteryStatsImpl.Uid.Proc ps = pr.batteryStats;
                                    ps.addCpuTimeLocked(st.rel_utime-otherUTime,
                                            st.rel_stime-otherSTime);
                                    ps.addSpeedStepTimes(cpuSpeedTimes);
                                    pr.curCpuTime += (st.rel_utime+st.rel_stime) * 10;
                                } else {
                                    BatteryStatsImpl.Uid.Proc ps =
                                            bstats.getProcessStatsLocked(st.name, st.pid);
                                    if (ps != null) {
                                        ps.addCpuTimeLocked(st.rel_utime-otherUTime,
                                                st.rel_stime-otherSTime);
                                        ps.addSpeedStepTimes(cpuSpeedTimes);
                                    }
                                }
                            }
                            bstats.finishAddingCpuLocked(perc, totalUTime,
                                    totalSTime, cpuSpeedTimes);
                        }
                    }
                }

                if (mLastWriteTime < (now-BATTERY_STATS_TIME)) {
                    mLastWriteTime = now;
                    mBatteryStatsService.getActiveStatistics().writeAsyncLocked();
                }
            }
        }
    }
    
    @Override
    public void batteryNeedsCpuUpdate() {
        updateCpuStatsNow();
    }

    @Override
    public void batteryPowerChanged(boolean onBattery) {
        // When plugging in, update the CPU stats first before changing
        // the plug state.
        updateCpuStatsNow();
        synchronized (this) {
            synchronized(mPidsSelfLocked) {
                mOnBattery = DEBUG_POWER ? true : onBattery;
            }
        }
    }

    /**
     * Initialize the application bind args. These are passed to each
     * process when the bindApplication() IPC is sent to the process. They're
     * lazily setup to make sure the services are running when they're asked for.
     */
    private HashMap<String, IBinder> getCommonServicesLocked() {
        if (mAppBindArgs == null) {
            mAppBindArgs = new HashMap<String, IBinder>();

            // Setup the application init args
            mAppBindArgs.put("package", ServiceManager.getService("package"));
            mAppBindArgs.put("window", ServiceManager.getService("window"));
            mAppBindArgs.put(Context.ALARM_SERVICE,
                    ServiceManager.getService(Context.ALARM_SERVICE));
        }
        return mAppBindArgs;
    }

    final void setFocusedActivityLocked(ActivityRecord r) {
        if (mFocusedActivity != r) {
            mFocusedActivity = r;
            if (r != null) {
                mWindowManager.setFocusedApp(r.appToken, true);
            }
            applyUpdateLockStateLocked(r);
        }
    }

    final void applyUpdateLockStateLocked(ActivityRecord r) {
        // Modifications to the UpdateLock state are done on our handler, outside
        // the activity manager's locks.  The new state is determined based on the
        // state *now* of the relevant activity record.  The object is passed to
        // the handler solely for logging detail, not to be consulted/modified.
        final boolean nextState = r != null && r.immersive;
        mHandler.sendMessage(
                mHandler.obtainMessage(IMMERSIVE_MODE_LOCK_MSG, (nextState) ? 1 : 0, 0, r));
    }

    private final void updateLruProcessInternalLocked(ProcessRecord app, int bestPos) {
        // put it on the LRU to keep track of when it should be exited.
        int lrui = mLruProcesses.indexOf(app);
        if (lrui >= 0) mLruProcesses.remove(lrui);
        
        int i = mLruProcesses.size()-1;
        int skipTop = 0;
        
        app.lruSeq = mLruSeq;
        
        // compute the new weight for this process.
        app.lastActivityTime = SystemClock.uptimeMillis();
        if (app.activities.size() > 0) {
            // If this process has activities, we more strongly want to keep
            // it around.
            app.lruWeight = app.lastActivityTime;
        } else if (app.pubProviders.size() > 0) {
            // If this process contains content providers, we want to keep
            // it a little more strongly.
            app.lruWeight = app.lastActivityTime - ProcessList.CONTENT_APP_IDLE_OFFSET;
            // Also don't let it kick out the first few "real" hidden processes.
            skipTop = ProcessList.MIN_HIDDEN_APPS;
        } else {
            // If this process doesn't have activities, we less strongly
            // want to keep it around, and generally want to avoid getting
            // in front of any very recently used activities.
            app.lruWeight = app.lastActivityTime - ProcessList.EMPTY_APP_IDLE_OFFSET;
            // Also don't let it kick out the first few "real" hidden processes.
            skipTop = ProcessList.MIN_HIDDEN_APPS;
        }

        while (i >= 0) {
            ProcessRecord p = mLruProcesses.get(i);
            // If this app shouldn't be in front of the first N background
            // apps, then skip over that many that are currently hidden.
            if (skipTop > 0 && p.setAdj >= ProcessList.HIDDEN_APP_MIN_ADJ) {
                skipTop--;
            }
            if (p.lruWeight <= app.lruWeight || i < bestPos) {
                mLruProcesses.add(i+1, app);
                break;
            }
            i--;
        }
        if (i < 0) {
            mLruProcesses.add(0, app);
        }
        
        // If the app is currently using a content provider or service,
        // bump those processes as well.
        if (app.connections.size() > 0) {
            for (ConnectionRecord cr : app.connections) {
                if (cr.binding != null && cr.binding.service != null
                        && cr.binding.service.app != null
                        && cr.binding.service.app.lruSeq != mLruSeq) {
                    updateLruProcessInternalLocked(cr.binding.service.app, i+1);
                }
            }
        }
        for (int j=app.conProviders.size()-1; j>=0; j--) {
            ContentProviderRecord cpr = app.conProviders.get(j).provider;
            if (cpr.proc != null && cpr.proc.lruSeq != mLruSeq) {
                updateLruProcessInternalLocked(cpr.proc, i+1);
            }
        }
    }

    final void updateLruProcessLocked(ProcessRecord app,
            boolean oomAdj) {
        mLruSeq++;
        updateLruProcessInternalLocked(app, 0);

        //Slog.i(TAG, "Putting proc to front: " + app.processName);
        if (oomAdj) {
            updateOomAdjLocked();
        }
    }

    final ProcessRecord getProcessRecordLocked(
            String processName, int uid) {
        if (uid == Process.SYSTEM_UID) {
            // The system gets to run in any process.  If there are multiple
            // processes with the same uid, just pick the first (this
            // should never happen).
            SparseArray<ProcessRecord> procs = mProcessNames.getMap().get(
                    processName);
            if (procs == null) return null;
            final int N = procs.size();
            for (int i = 0; i < N; i++) {
                if (UserHandle.isSameUser(procs.keyAt(i), uid)) return procs.valueAt(i);
            }
        }
        ProcessRecord proc = mProcessNames.get(processName, uid);
        return proc;
    }

    void ensurePackageDexOpt(String packageName) {
        IPackageManager pm = AppGlobals.getPackageManager();
        try {
            if (pm.performDexOpt(packageName)) {
                mDidDexOpt = true;
            }
        } catch (RemoteException e) {
        }
    }
    
    boolean isNextTransitionForward() {
        int transit = mWindowManager.getPendingAppTransition();
        return transit == AppTransition.TRANSIT_ACTIVITY_OPEN
                || transit == AppTransition.TRANSIT_TASK_OPEN
                || transit == AppTransition.TRANSIT_TASK_TO_FRONT;
    }
    
    final ProcessRecord startProcessLocked(String processName,
            ApplicationInfo info, boolean knownToBeDead, int intentFlags,
            String hostingType, ComponentName hostingName, boolean allowWhileBooting,
            boolean isolated) {
        ProcessRecord app;
        if (!isolated) {
            app = getProcessRecordLocked(processName, info.uid);
        } else {
            // If this is an isolated process, it can't re-use an existing process.
            app = null;
        }
        // We don't have to do anything more if:
        // (1) There is an existing application record; and
        // (2) The caller doesn't think it is dead, OR there is no thread
        //     object attached to it so we know it couldn't have crashed; and
        // (3) There is a pid assigned to it, so it is either starting or
        //     already running.
        if (DEBUG_PROCESSES) Slog.v(TAG, "startProcess: name=" + processName
                + " app=" + app + " knownToBeDead=" + knownToBeDead
                + " thread=" + (app != null ? app.thread : null)
                + " pid=" + (app != null ? app.pid : -1));
        if (app != null && app.pid > 0) {
            if (!knownToBeDead || app.thread == null) {
                // We already have the app running, or are waiting for it to
                // come up (we have a pid but not yet its thread), so keep it.
                if (DEBUG_PROCESSES) Slog.v(TAG, "App already running: " + app);
                // If this is a new package in the process, add the package to the list
                app.addPackage(info.packageName);
                return app;
            } else {
                // An application record is attached to a previous process,
                // clean it up now.
                if (DEBUG_PROCESSES || DEBUG_CLEANUP) Slog.v(TAG, "App died: " + app);
                handleAppDiedLocked(app, true, true);
            }
        }

        String hostingNameStr = hostingName != null
                ? hostingName.flattenToShortString() : null;

        if (!isolated) {
            if ((intentFlags&Intent.FLAG_FROM_BACKGROUND) != 0) {
                // If we are in the background, then check to see if this process
                // is bad.  If so, we will just silently fail.
                if (mBadProcesses.get(info.processName, info.uid) != null) {
                    if (DEBUG_PROCESSES) Slog.v(TAG, "Bad process: " + info.uid
                            + "/" + info.processName);
                    return null;
                }
            } else {
                // When the user is explicitly starting a process, then clear its
                // crash count so that we won't make it bad until they see at
                // least one crash dialog again, and make the process good again
                // if it had been bad.
                if (DEBUG_PROCESSES) Slog.v(TAG, "Clearing bad process: " + info.uid
                        + "/" + info.processName);
                mProcessCrashTimes.remove(info.processName, info.uid);
                if (mBadProcesses.get(info.processName, info.uid) != null) {
                    EventLog.writeEvent(EventLogTags.AM_PROC_GOOD,
                            UserHandle.getUserId(info.uid), info.uid,
                            info.processName);
                    mBadProcesses.remove(info.processName, info.uid);
                    if (app != null) {
                        app.bad = false;
                    }
                }
            }
        }

        if (app == null) {
            app = newProcessRecordLocked(null, info, processName, isolated);
            if (app == null) {
                Slog.w(TAG, "Failed making new process record for "
                        + processName + "/" + info.uid + " isolated=" + isolated);
                return null;
            }
            mProcessNames.put(processName, app.uid, app);
            if (isolated) {
                mIsolatedProcesses.put(app.uid, app);
            }
        } else {
            // If this is a new package in the process, add the package to the list
            app.addPackage(info.packageName);
        }

        // If the system is not ready yet, then hold off on starting this
        // process until it is.
        if (!mProcessesReady
                && !isAllowedWhileBooting(info)
                && !allowWhileBooting) {
            if (!mProcessesOnHold.contains(app)) {
                mProcessesOnHold.add(app);
            }
            if (DEBUG_PROCESSES) Slog.v(TAG, "System not ready, putting on hold: " + app);
            return app;
        }

        startProcessLocked(app, hostingType, hostingNameStr);
        return (app.pid != 0) ? app : null;
    }

    boolean isAllowedWhileBooting(ApplicationInfo ai) {
        return (ai.flags&ApplicationInfo.FLAG_PERSISTENT) != 0;
    }
    
    private final void startProcessLocked(ProcessRecord app,
            String hostingType, String hostingNameStr) {
        if (app.pid > 0 && app.pid != MY_PID) {
            synchronized (mPidsSelfLocked) {
                mPidsSelfLocked.remove(app.pid);
                mHandler.removeMessages(PROC_START_TIMEOUT_MSG, app);
            }
            app.setPid(0);
        }

        if (DEBUG_PROCESSES && mProcessesOnHold.contains(app)) Slog.v(TAG,
                "startProcessLocked removing on hold: " + app);
        mProcessesOnHold.remove(app);

        updateCpuStats();
        
        System.arraycopy(mProcDeaths, 0, mProcDeaths, 1, mProcDeaths.length-1);
        mProcDeaths[0] = 0;
        
        try {
            int uid = app.uid;

            int[] gids = null;
            int mountExternal = Zygote.MOUNT_EXTERNAL_NONE;
            if (!app.isolated) {
                int[] permGids = null;
                try {
                    final PackageManager pm = mContext.getPackageManager();
                    permGids = pm.getPackageGids(app.info.packageName);

                    if (Environment.isExternalStorageEmulated()) {
                        if (pm.checkPermission(
                                android.Manifest.permission.ACCESS_ALL_EXTERNAL_STORAGE,
                                app.info.packageName) == PERMISSION_GRANTED) {
                            mountExternal = Zygote.MOUNT_EXTERNAL_MULTIUSER_ALL;
                        } else {
                            mountExternal = Zygote.MOUNT_EXTERNAL_MULTIUSER;
                        }
                    }
                } catch (PackageManager.NameNotFoundException e) {
                    Slog.w(TAG, "Unable to retrieve gids", e);
                }

                /*
                 * Add shared application GID so applications can share some
                 * resources like shared libraries
                 */
                if (permGids == null) {
                    gids = new int[1];
                } else {
                    gids = new int[permGids.length + 1];
                    System.arraycopy(permGids, 0, gids, 1, permGids.length);
                }
                gids[0] = UserHandle.getSharedAppGid(UserHandle.getAppId(uid));
            }
            if (mFactoryTest != SystemServer.FACTORY_TEST_OFF) {
                if (mFactoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL
                        && mTopComponent != null
                        && app.processName.equals(mTopComponent.getPackageName())) {
                    uid = 0;
                }
                if (mFactoryTest == SystemServer.FACTORY_TEST_HIGH_LEVEL
                        && (app.info.flags&ApplicationInfo.FLAG_FACTORY_TEST) != 0) {
                    uid = 0;
                }
            }
            int debugFlags = 0;
            if ((app.info.flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0) {
                debugFlags |= Zygote.DEBUG_ENABLE_DEBUGGER;
                // Also turn on CheckJNI for debuggable apps. It's quite
                // awkward to turn on otherwise.
                debugFlags |= Zygote.DEBUG_ENABLE_CHECKJNI;
            }
            // Run the app in safe mode if its manifest requests so or the
            // system is booted in safe mode.
            if ((app.info.flags & ApplicationInfo.FLAG_VM_SAFE_MODE) != 0 ||
                Zygote.systemInSafeMode == true) {
                debugFlags |= Zygote.DEBUG_ENABLE_SAFEMODE;
            }
            if ("1".equals(SystemProperties.get("debug.checkjni"))) {
                debugFlags |= Zygote.DEBUG_ENABLE_CHECKJNI;
            }
            if ("1".equals(SystemProperties.get("debug.jni.logging"))) {
                debugFlags |= Zygote.DEBUG_ENABLE_JNI_LOGGING;
            }
            if ("1".equals(SystemProperties.get("debug.assert"))) {
                debugFlags |= Zygote.DEBUG_ENABLE_ASSERT;
            }

            // Start the process.  It will either succeed and return a result containing
            // the PID of the new process, or else throw a RuntimeException.
            Process.ProcessStartResult startResult = Process.start("android.app.ActivityThread",
                    app.processName, uid, uid, gids, debugFlags, mountExternal,
                    app.info.targetSdkVersion, null, null);

            BatteryStatsImpl bs = app.batteryStats.getBatteryStats();
            synchronized (bs) {
                if (bs.isOnBattery()) {
                    app.batteryStats.incStartsLocked();
                }
            }
            
            EventLog.writeEvent(EventLogTags.AM_PROC_START,
                    UserHandle.getUserId(uid), startResult.pid, uid,
                    app.processName, hostingType,
                    hostingNameStr != null ? hostingNameStr : "");
            
            if (app.persistent) {
                Watchdog.getInstance().processStarted(app.processName, startResult.pid);
            }
            
            StringBuilder buf = mStringBuilder;
            buf.setLength(0);
            buf.append("Start proc ");
            buf.append(app.processName);
            buf.append(" for ");
            buf.append(hostingType);
            if (hostingNameStr != null) {
                buf.append(" ");
                buf.append(hostingNameStr);
            }
            buf.append(": pid=");
            buf.append(startResult.pid);
            buf.append(" uid=");
            buf.append(uid);
            buf.append(" gids={");
            if (gids != null) {
                for (int gi=0; gi<gids.length; gi++) {
                    if (gi != 0) buf.append(", ");
                    buf.append(gids[gi]);

                }
            }
            buf.append("}");
            Slog.i(TAG, buf.toString());
            app.setPid(startResult.pid);
            app.usingWrapper = startResult.usingWrapper;
            app.removed = false;
            synchronized (mPidsSelfLocked) {
                this.mPidsSelfLocked.put(startResult.pid, app);
                Message msg = mHandler.obtainMessage(PROC_START_TIMEOUT_MSG);
                msg.obj = app;
                mHandler.sendMessageDelayed(msg, startResult.usingWrapper
                        ? PROC_START_TIMEOUT_WITH_WRAPPER : PROC_START_TIMEOUT);
            }
        } catch (RuntimeException e) {
            // XXX do better error recovery.
            app.setPid(0);
            Slog.e(TAG, "Failure starting process " + app.processName, e);
        }
    }

    void updateUsageStats(ActivityRecord resumedComponent, boolean resumed) {
        if (resumed) {
            mUsageStatsService.noteResumeComponent(resumedComponent.realActivity);
        } else {
            mUsageStatsService.notePauseComponent(resumedComponent.realActivity);
        }
    }

    boolean startHomeActivityLocked(int userId) {
        if (mHeadless) {
            // Added because none of the other calls to ensureBootCompleted seem to fire
            // when running headless.
            ensureBootCompleted();
            return false;
        }

        if (mFactoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL
                && mTopAction == null) {
            // We are running in factory test mode, but unable to find
            // the factory test app, so just sit around displaying the
            // error message and don't try to start anything.
            return false;
        }
        Intent intent = new Intent(
            mTopAction,
            mTopData != null ? Uri.parse(mTopData) : null);
        intent.setComponent(mTopComponent);
        if (mFactoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL) {
            intent.addCategory(Intent.CATEGORY_HOME);
        }
        ActivityInfo aInfo =
            resolveActivityInfo(intent, STOCK_PM_FLAGS, userId);
        if (aInfo != null) {
            intent.setComponent(new ComponentName(
                    aInfo.applicationInfo.packageName, aInfo.name));
            // Don't do this if the home app is currently being
            // instrumented.
            aInfo = new ActivityInfo(aInfo);
            aInfo.applicationInfo = getAppInfoForUser(aInfo.applicationInfo, userId);
            ProcessRecord app = getProcessRecordLocked(aInfo.processName,
                    aInfo.applicationInfo.uid);
            if (app == null || app.instrumentationClass == null) {
                intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK);
                mMainStack.startActivityLocked(null, intent, null, aInfo,
                        null, null, 0, 0, 0, null, 0, null, false, null);
            }
        }

        return true;
    }

    private ActivityInfo resolveActivityInfo(Intent intent, int flags, int userId) {
        ActivityInfo ai = null;
        ComponentName comp = intent.getComponent();
        try {
            if (comp != null) {
                ai = AppGlobals.getPackageManager().getActivityInfo(comp, flags, userId);
            } else {
                ResolveInfo info = AppGlobals.getPackageManager().resolveIntent(
                        intent,
                        intent.resolveTypeIfNeeded(mContext.getContentResolver()),
                            flags, userId);
    
                if (info != null) {
                    ai = info.activityInfo;
                }
            }
        } catch (RemoteException e) {
            // ignore
        }

        return ai;
    }

    /**
     * Starts the "new version setup screen" if appropriate.
     */
    void startSetupActivityLocked() {
        // Only do this once per boot.
        if (mCheckedForSetup) {
            return;
        }
        
        // We will show this screen if the current one is a different
        // version than the last one shown, and we are not running in
        // low-level factory test mode.
        final ContentResolver resolver = mContext.getContentResolver();
        if (mFactoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL &&
                Settings.Global.getInt(resolver,
                        Settings.Global.DEVICE_PROVISIONED, 0) != 0) {
            mCheckedForSetup = true;
            
            // See if we should be showing the platform update setup UI.
            Intent intent = new Intent(Intent.ACTION_UPGRADE_SETUP);
            List<ResolveInfo> ris = mSelf.mContext.getPackageManager()
                    .queryIntentActivities(intent, PackageManager.GET_META_DATA);
            
            // We don't allow third party apps to replace this.
            ResolveInfo ri = null;
            for (int i=0; ris != null && i<ris.size(); i++) {
                if ((ris.get(i).activityInfo.applicationInfo.flags
                        & ApplicationInfo.FLAG_SYSTEM) != 0) {
                    ri = ris.get(i);
                    break;
                }
            }
            
            if (ri != null) {
                String vers = ri.activityInfo.metaData != null
                        ? ri.activityInfo.metaData.getString(Intent.METADATA_SETUP_VERSION)
                        : null;
                if (vers == null && ri.activityInfo.applicationInfo.metaData != null) {
                    vers = ri.activityInfo.applicationInfo.metaData.getString(
                            Intent.METADATA_SETUP_VERSION);
                }
                String lastVers = Settings.Secure.getString(
                        resolver, Settings.Secure.LAST_SETUP_SHOWN);
                if (vers != null && !vers.equals(lastVers)) {
                    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                    intent.setComponent(new ComponentName(
                            ri.activityInfo.packageName, ri.activityInfo.name));
                    mMainStack.startActivityLocked(null, intent, null, ri.activityInfo,
                            null, null, 0, 0, 0, null, 0, null, false, null);
                }
            }
        }
    }
    
    CompatibilityInfo compatibilityInfoForPackageLocked(ApplicationInfo ai) {
        return mCompatModePackages.compatibilityInfoForPackageLocked(ai);
    }

    void enforceNotIsolatedCaller(String caller) {
        if (UserHandle.isIsolated(Binder.getCallingUid())) {
            throw new SecurityException("Isolated process not allowed to call " + caller);
        }
    }

    public int getFrontActivityScreenCompatMode() {
        enforceNotIsolatedCaller("getFrontActivityScreenCompatMode");
        synchronized (this) {
            return mCompatModePackages.getFrontActivityScreenCompatModeLocked();
        }
    }

    public void setFrontActivityScreenCompatMode(int mode) {
        enforceCallingPermission(android.Manifest.permission.SET_SCREEN_COMPATIBILITY,
                "setFrontActivityScreenCompatMode");
        synchronized (this) {
            mCompatModePackages.setFrontActivityScreenCompatModeLocked(mode);
        }
    }

    public int getPackageScreenCompatMode(String packageName) {
        enforceNotIsolatedCaller("getPackageScreenCompatMode");
        synchronized (this) {
            return mCompatModePackages.getPackageScreenCompatModeLocked(packageName);
        }
    }

    public void setPackageScreenCompatMode(String packageName, int mode) {
        enforceCallingPermission(android.Manifest.permission.SET_SCREEN_COMPATIBILITY,
                "setPackageScreenCompatMode");
        synchronized (this) {
            mCompatModePackages.setPackageScreenCompatModeLocked(packageName, mode);
        }
    }

    public boolean getPackageAskScreenCompat(String packageName) {
        enforceNotIsolatedCaller("getPackageAskScreenCompat");
        synchronized (this) {
            return mCompatModePackages.getPackageAskCompatModeLocked(packageName);
        }
    }

    public void setPackageAskScreenCompat(String packageName, boolean ask) {
        enforceCallingPermission(android.Manifest.permission.SET_SCREEN_COMPATIBILITY,
                "setPackageAskScreenCompat");
        synchronized (this) {
            mCompatModePackages.setPackageAskCompatModeLocked(packageName, ask);
        }
    }

    void reportResumedActivityLocked(ActivityRecord r) {
        //Slog.i(TAG, "**** REPORT RESUME: " + r);
        updateUsageStats(r, true);
    }

    private void dispatchProcessesChanged() {
        int N;
        synchronized (this) {
            N = mPendingProcessChanges.size();
            if (mActiveProcessChanges.length < N) {
                mActiveProcessChanges = new ProcessChangeItem[N];
            }
            mPendingProcessChanges.toArray(mActiveProcessChanges);
            mAvailProcessChanges.addAll(mPendingProcessChanges);
            mPendingProcessChanges.clear();
            if (DEBUG_PROCESS_OBSERVERS) Slog.i(TAG, "*** Delivering " + N + " process changes");
        }
        int i = mProcessObservers.beginBroadcast();
        while (i > 0) {
            i--;
            final IProcessObserver observer = mProcessObservers.getBroadcastItem(i);
            if (observer != null) {
                try {
                    for (int j=0; j<N; j++) {
                        ProcessChangeItem item = mActiveProcessChanges[j];
                        if ((item.changes&ProcessChangeItem.CHANGE_ACTIVITIES) != 0) {
                            if (DEBUG_PROCESS_OBSERVERS) Slog.i(TAG, "ACTIVITIES CHANGED pid="
                                    + item.pid + " uid=" + item.uid + ": "
                                    + item.foregroundActivities);
                            observer.onForegroundActivitiesChanged(item.pid, item.uid,
                                    item.foregroundActivities);
                        }
                        if ((item.changes&ProcessChangeItem.CHANGE_IMPORTANCE) != 0) {
                            if (DEBUG_PROCESS_OBSERVERS) Slog.i(TAG, "IMPORTANCE CHANGED pid="
                                    + item.pid + " uid=" + item.uid + ": " + item.importance);
                            observer.onImportanceChanged(item.pid, item.uid,
                                    item.importance);
                        }
                    }
                } catch (RemoteException e) {
                }
            }
        }
        mProcessObservers.finishBroadcast();
    }

    private void dispatchProcessDied(int pid, int uid) {
        int i = mProcessObservers.beginBroadcast();
        while (i > 0) {
            i--;
            final IProcessObserver observer = mProcessObservers.getBroadcastItem(i);
            if (observer != null) {
                try {
                    observer.onProcessDied(pid, uid);
                } catch (RemoteException e) {
                }
            }
        }
        mProcessObservers.finishBroadcast();
    }

    final void doPendingActivityLaunchesLocked(boolean doResume) {
        final int N = mPendingActivityLaunches.size();
        if (N <= 0) {
            return;
        }
        for (int i=0; i<N; i++) {
            PendingActivityLaunch pal = mPendingActivityLaunches.get(i);
            mMainStack.startActivityUncheckedLocked(pal.r, pal.sourceRecord,
                    pal.startFlags, doResume && i == (N-1), null);
        }
        mPendingActivityLaunches.clear();
    }

    public final int startActivity(IApplicationThread caller, String callingPackage,
            Intent intent, String resolvedType, IBinder resultTo,
            String resultWho, int requestCode, int startFlags,
            String profileFile, ParcelFileDescriptor profileFd, Bundle options) {
        return startActivityAsUser(caller, callingPackage, intent, resolvedType, resultTo,
                resultWho, requestCode,
                startFlags, profileFile, profileFd, options, UserHandle.getCallingUserId());
    }

    public final int startActivityAsUser(IApplicationThread caller, String callingPackage,
            Intent intent, String resolvedType, IBinder resultTo,
            String resultWho, int requestCode, int startFlags,
            String profileFile, ParcelFileDescriptor profileFd, Bundle options, int userId) {
        enforceNotIsolatedCaller("startActivity");
        userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), userId,
                false, true, "startActivity", null);
        return mMainStack.startActivityMayWait(caller, -1, callingPackage, intent, resolvedType,
                resultTo, resultWho, requestCode, startFlags, profileFile, profileFd,
                null, null, options, userId);
    }

    public final WaitResult startActivityAndWait(IApplicationThread caller, String callingPackage,
            Intent intent, String resolvedType, IBinder resultTo,
            String resultWho, int requestCode, int startFlags, String profileFile,
            ParcelFileDescriptor profileFd, Bundle options, int userId) {
        enforceNotIsolatedCaller("startActivityAndWait");
        userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), userId,
                false, true, "startActivityAndWait", null);
        WaitResult res = new WaitResult();
        mMainStack.startActivityMayWait(caller, -1, callingPackage, intent, resolvedType,
                resultTo, resultWho, requestCode, startFlags, profileFile, profileFd,
                res, null, options, UserHandle.getCallingUserId());
        return res;
    }

    public final int startActivityWithConfig(IApplicationThread caller, String callingPackage,
            Intent intent, String resolvedType, IBinder resultTo,
            String resultWho, int requestCode, int startFlags, Configuration config,
            Bundle options, int userId) {
        enforceNotIsolatedCaller("startActivityWithConfig");
        userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), userId,
                false, true, "startActivityWithConfig", null);
        int ret = mMainStack.startActivityMayWait(caller, -1, callingPackage, intent, resolvedType,
                resultTo, resultWho, requestCode, startFlags,
                null, null, null, config, options, userId);
        return ret;
    }

    public int startActivityIntentSender(IApplicationThread caller,
            IntentSender intent, Intent fillInIntent, String resolvedType,
            IBinder resultTo, String resultWho, int requestCode,
            int flagsMask, int flagsValues, Bundle options) {
        enforceNotIsolatedCaller("startActivityIntentSender");
        // Refuse possible leaked file descriptors
        if (fillInIntent != null && fillInIntent.hasFileDescriptors()) {
            throw new IllegalArgumentException("File descriptors passed in Intent");
        }
        
        IIntentSender sender = intent.getTarget();
        if (!(sender instanceof PendingIntentRecord)) {
            throw new IllegalArgumentException("Bad PendingIntent object");
        }
        
        PendingIntentRecord pir = (PendingIntentRecord)sender;
        
        synchronized (this) {
            // If this is coming from the currently resumed activity, it is
            // effectively saying that app switches are allowed at this point.
            if (mMainStack.mResumedActivity != null
                    && mMainStack.mResumedActivity.info.applicationInfo.uid ==
                            Binder.getCallingUid()) {
                mAppSwitchesAllowedTime = 0;
            }
        }
        int ret = pir.sendInner(0, fillInIntent, resolvedType, null, null,
                resultTo, resultWho, requestCode, flagsMask, flagsValues, options);
        return ret;
    }
    
    public boolean startNextMatchingActivity(IBinder callingActivity,
            Intent intent, Bundle options) {
        // Refuse possible leaked file descriptors
        if (intent != null && intent.hasFileDescriptors() == true) {
            throw new IllegalArgumentException("File descriptors passed in Intent");
        }

        synchronized (this) {
            ActivityRecord r = mMainStack.isInStackLocked(callingActivity);
            if (r == null) {
                ActivityOptions.abort(options);
                return false;
            }
            if (r.app == null || r.app.thread == null) {
                // The caller is not running...  d'oh!
                ActivityOptions.abort(options);
                return false;
            }
            intent = new Intent(intent);
            // The caller is not allowed to change the data.
            intent.setDataAndType(r.intent.getData(), r.intent.getType());
            // And we are resetting to find the next component...
            intent.setComponent(null);

            ActivityInfo aInfo = null;
            try {
                List<ResolveInfo> resolves =
                    AppGlobals.getPackageManager().queryIntentActivities(
                            intent, r.resolvedType,
                            PackageManager.MATCH_DEFAULT_ONLY | STOCK_PM_FLAGS,
                            UserHandle.getCallingUserId());

                // Look for the original activity in the list...
                final int N = resolves != null ? resolves.size() : 0;
                for (int i=0; i<N; i++) {
                    ResolveInfo rInfo = resolves.get(i);
                    if (rInfo.activityInfo.packageName.equals(r.packageName)
                            && rInfo.activityInfo.name.equals(r.info.name)) {
                        // We found the current one...  the next matching is
                        // after it.
                        i++;
                        if (i<N) {
                            aInfo = resolves.get(i).activityInfo;
                        }
                        break;
                    }
                }
            } catch (RemoteException e) {
            }

            if (aInfo == null) {
                // Nobody who is next!
                ActivityOptions.abort(options);
                return false;
            }

            intent.setComponent(new ComponentName(
                    aInfo.applicationInfo.packageName, aInfo.name));
            intent.setFlags(intent.getFlags()&~(
                    Intent.FLAG_ACTIVITY_FORWARD_RESULT|
                    Intent.FLAG_ACTIVITY_CLEAR_TOP|
                    Intent.FLAG_ACTIVITY_MULTIPLE_TASK|
                    Intent.FLAG_ACTIVITY_NEW_TASK));

            // Okay now we need to start the new activity, replacing the
            // currently running activity.  This is a little tricky because
            // we want to start the new one as if the current one is finished,
            // but not finish the current one first so that there is no flicker.
            // And thus...
            final boolean wasFinishing = r.finishing;
            r.finishing = true;

            // Propagate reply information over to the new activity.
            final ActivityRecord resultTo = r.resultTo;
            final String resultWho = r.resultWho;
            final int requestCode = r.requestCode;
            r.resultTo = null;
            if (resultTo != null) {
                resultTo.removeResultsLocked(r, resultWho, requestCode);
            }

            final long origId = Binder.clearCallingIdentity();
            int res = mMainStack.startActivityLocked(r.app.thread, intent,
                    r.resolvedType, aInfo, resultTo != null ? resultTo.appToken : null,
                    resultWho, requestCode, -1, r.launchedFromUid, r.launchedFromPackage, 0,
                    options, false, null);
            Binder.restoreCallingIdentity(origId);

            r.finishing = wasFinishing;
            if (res != ActivityManager.START_SUCCESS) {
                return false;
            }
            return true;
        }
    }

    final int startActivityInPackage(int uid, String callingPackage,
            Intent intent, String resolvedType, IBinder resultTo,
            String resultWho, int requestCode, int startFlags, Bundle options, int userId) {

        userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), userId,
                false, true, "startActivityInPackage", null);

        int ret = mMainStack.startActivityMayWait(null, uid, callingPackage, intent, resolvedType,
                resultTo, resultWho, requestCode, startFlags,
                null, null, null, null, options, userId);
        return ret;
    }

    public final int startActivities(IApplicationThread caller, String callingPackage,
            Intent[] intents, String[] resolvedTypes, IBinder resultTo, Bundle options,
            int userId) {
        enforceNotIsolatedCaller("startActivities");
        userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), userId,
                false, true, "startActivity", null);
        int ret = mMainStack.startActivities(caller, -1, callingPackage, intents,
                resolvedTypes, resultTo, options, userId);
        return ret;
    }

    final int startActivitiesInPackage(int uid, String callingPackage,
            Intent[] intents, String[] resolvedTypes, IBinder resultTo,
            Bundle options, int userId) {

        userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), userId,
                false, true, "startActivityInPackage", null);
        int ret = mMainStack.startActivities(null, uid, callingPackage, intents, resolvedTypes,
                resultTo, options, userId);
        return ret;
    }

    final void addRecentTaskLocked(TaskRecord task) {
        int N = mRecentTasks.size();
        // Quick case: check if the top-most recent task is the same.
        if (N > 0 && mRecentTasks.get(0) == task) {
            return;
        }
        // Remove any existing entries that are the same kind of task.
        for (int i=0; i<N; i++) {
            TaskRecord tr = mRecentTasks.get(i);
            if (task.userId == tr.userId
                    && ((task.affinity != null && task.affinity.equals(tr.affinity))
                    || (task.intent != null && task.intent.filterEquals(tr.intent)))) {
                mRecentTasks.remove(i);
                i--;
                N--;
                if (task.intent == null) {
                    // If the new recent task we are adding is not fully
                    // specified, then replace it with the existing recent task.
                    task = tr;
                }
            }
        }
        if (N >= MAX_RECENT_TASKS) {
            mRecentTasks.remove(N-1);
        }
        mRecentTasks.add(0, task);
    }

    public void setRequestedOrientation(IBinder token,
            int requestedOrientation) {
        synchronized (this) {
            ActivityRecord r = mMainStack.isInStackLocked(token);
            if (r == null) {
                return;
            }
            final long origId = Binder.clearCallingIdentity();
            mWindowManager.setAppOrientation(r.appToken, requestedOrientation);
            Configuration config = mWindowManager.updateOrientationFromAppTokens(
                    mConfiguration,
                    r.mayFreezeScreenLocked(r.app) ? r.appToken : null);
            if (config != null) {
                r.frozenBeforeDestroy = true;
                if (!updateConfigurationLocked(config, r, false, false)) {
                    mMainStack.resumeTopActivityLocked(null);
                }
            }
            Binder.restoreCallingIdentity(origId);
        }
    }

    public int getRequestedOrientation(IBinder token) {
        synchronized (this) {
            ActivityRecord r = mMainStack.isInStackLocked(token);
            if (r == null) {
                return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;
            }
            return mWindowManager.getAppOrientation(r.appToken);
        }
    }

    /**
     * This is the internal entry point for handling Activity.finish().
     * 
     * @param token The Binder token referencing the Activity we want to finish.
     * @param resultCode Result code, if any, from this Activity.
     * @param resultData Result data (Intent), if any, from this Activity.
     * 
     * @return Returns true if the activity successfully finished, or false if it is still running.
     */
    public final boolean finishActivity(IBinder token, int resultCode, Intent resultData) {
        // Refuse possible leaked file descriptors
        if (resultData != null && resultData.hasFileDescriptors() == true) {
            throw new IllegalArgumentException("File descriptors passed in Intent");
        }

        synchronized(this) {
            if (mController != null) {
                // Find the first activity that is not finishing.
                ActivityRecord next = mMainStack.topRunningActivityLocked(token, 0);
                if (next != null) {
                    // ask watcher if this is allowed
                    boolean resumeOK = true;
                    try {
                        resumeOK = mController.activityResuming(next.packageName);
                    } catch (RemoteException e) {
                        mController = null;
                    }
    
                    if (!resumeOK) {
                        return false;
                    }
                }
            }
            final long origId = Binder.clearCallingIdentity();
            boolean res = mMainStack.requestFinishActivityLocked(token, resultCode,
                    resultData, "app-request", true);
            Binder.restoreCallingIdentity(origId);
            return res;
        }
    }

    public final void finishHeavyWeightApp() {
        if (checkCallingPermission(android.Manifest.permission.FORCE_STOP_PACKAGES)
                != PackageManager.PERMISSION_GRANTED) {
            String msg = "Permission Denial: finishHeavyWeightApp() from pid="
                    + Binder.getCallingPid()
                    + ", uid=" + Binder.getCallingUid()
                    + " requires " + android.Manifest.permission.FORCE_STOP_PACKAGES;
            Slog.w(TAG, msg);
            throw new SecurityException(msg);
        }
        
        synchronized(this) {
            if (mHeavyWeightProcess == null) {
                return;
            }
            
            ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(
                    mHeavyWeightProcess.activities);
            for (int i=0; i<activities.size(); i++) {
                ActivityRecord r = activities.get(i);
                if (!r.finishing) {
                    int index = mMainStack.indexOfTokenLocked(r.appToken);
                    if (index >= 0) {
                        mMainStack.finishActivityLocked(r, index, Activity.RESULT_CANCELED,
                                null, "finish-heavy", true);
                    }
                }
            }
            
            mHandler.sendMessage(mHandler.obtainMessage(CANCEL_HEAVY_NOTIFICATION_MSG,
                    mHeavyWeightProcess.userId, 0));
            mHeavyWeightProcess = null;
        }
    }
    
    public void crashApplication(int uid, int initialPid, String packageName,
            String message) {
        if (checkCallingPermission(android.Manifest.permission.FORCE_STOP_PACKAGES)
                != PackageManager.PERMISSION_GRANTED) {
            String msg = "Permission Denial: crashApplication() from pid="
                    + Binder.getCallingPid()
                    + ", uid=" + Binder.getCallingUid()
                    + " requires " + android.Manifest.permission.FORCE_STOP_PACKAGES;
            Slog.w(TAG, msg);
            throw new SecurityException(msg);
        }
        
        synchronized(this) {
            ProcessRecord proc = null;
            
            // Figure out which process to kill.  We don't trust that initialPid
            // still has any relation to current pids, so must scan through the
            // list.
            synchronized (mPidsSelfLocked) {
                for (int i=0; i<mPidsSelfLocked.size(); i++) {
                    ProcessRecord p = mPidsSelfLocked.valueAt(i);
                    if (p.uid != uid) {
                        continue;
                    }
                    if (p.pid == initialPid) {
                        proc = p;
                        break;
                    }
                    for (String str : p.pkgList) {
                        if (str.equals(packageName)) {
                            proc = p;
                        }
                    }
                }
            }
            
            if (proc == null) {
                Slog.w(TAG, "crashApplication: nothing for uid=" + uid
                        + " initialPid=" + initialPid
                        + " packageName=" + packageName);
                return;
            }
            
            if (proc.thread != null) {
                if (proc.pid == Process.myPid()) {
                    Log.w(TAG, "crashApplication: trying to crash self!");
                    return;
                }
                long ident = Binder.clearCallingIdentity();
                try {
                    proc.thread.scheduleCrash(message);
                } catch (RemoteException e) {
                }
                Binder.restoreCallingIdentity(ident);
            }
        }
    }
    
    public final void finishSubActivity(IBinder token, String resultWho,
            int requestCode) {
        synchronized(this) {
            final long origId = Binder.clearCallingIdentity();
            mMainStack.finishSubActivityLocked(token, resultWho, requestCode);
            Binder.restoreCallingIdentity(origId);
        }
    }

    public boolean finishActivityAffinity(IBinder token) {
        synchronized(this) {
            final long origId = Binder.clearCallingIdentity();
            boolean res = mMainStack.finishActivityAffinityLocked(token);
            Binder.restoreCallingIdentity(origId);
            return res;
        }
    }

    public boolean willActivityBeVisible(IBinder token) {
        synchronized(this) {
            int i;
            for (i=mMainStack.mHistory.size()-1; i>=0; i--) {
                ActivityRecord r = (ActivityRecord)mMainStack.mHistory.get(i);
                if (r.appToken == token) {
                    return true;
                }
                if (r.fullscreen && !r.finishing) {
                    return false;
                }
            }
            return true;
        }
    }
    
    public void overridePendingTransition(IBinder token, String packageName,
            int enterAnim, int exitAnim) {
        synchronized(this) {
            ActivityRecord self = mMainStack.isInStackLocked(token);
            if (self == null) {
                return;
            }

            final long origId = Binder.clearCallingIdentity();
            
            if (self.state == ActivityState.RESUMED
                    || self.state == ActivityState.PAUSING) {
                mWindowManager.overridePendingAppTransition(packageName,
                        enterAnim, exitAnim, null);
            }
            
            Binder.restoreCallingIdentity(origId);
        }
    }
    
    /**
     * Main function for removing an existing process from the activity manager
     * as a result of that process going away.  Clears out all connections
     * to the process.
     */
    private final void handleAppDiedLocked(ProcessRecord app,
            boolean restarting, boolean allowRestart) {
        cleanUpApplicationRecordLocked(app, restarting, allowRestart, -1);
        if (!restarting) {
            mLruProcesses.remove(app);
        }

        if (mProfileProc == app) {
            clearProfilerLocked();
        }

        // Just in case...
        if (mMainStack.mPausingActivity != null && mMainStack.mPausingActivity.app == app) {
            if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG,
                    "App died while pausing: " + mMainStack.mPausingActivity);
            mMainStack.mPausingActivity = null;
        }
        if (mMainStack.mLastPausedActivity != null && mMainStack.mLastPausedActivity.app == app) {
            mMainStack.mLastPausedActivity = null;
        }

        // Remove this application's activities from active lists.
        boolean hasVisibleActivities = mMainStack.removeHistoryRecordsForAppLocked(app);

        app.activities.clear();
        
        if (app.instrumentationClass != null) {
            Slog.w(TAG, "Crash of app " + app.processName
                  + " running instrumentation " + app.instrumentationClass);
            Bundle info = new Bundle();
            info.putString("shortMsg", "Process crashed.");
            finishInstrumentationLocked(app, Activity.RESULT_CANCELED, info);
        }

        if (!restarting) {
            if (!mMainStack.resumeTopActivityLocked(null)) {
                // If there was nothing to resume, and we are not already
                // restarting this process, but there is a visible activity that
                // is hosted by the process...  then make sure all visible
                // activities are running, taking care of restarting this
                // process.
                if (hasVisibleActivities) {
                    mMainStack.ensureActivitiesVisibleLocked(null, 0);
                }
            }
        }
    }

    private final int getLRURecordIndexForAppLocked(IApplicationThread thread) {
        IBinder threadBinder = thread.asBinder();
        // Find the application record.
        for (int i=mLruProcesses.size()-1; i>=0; i--) {
            ProcessRecord rec = mLruProcesses.get(i);
            if (rec.thread != null && rec.thread.asBinder() == threadBinder) {
                return i;
            }
        }
        return -1;
    }

    final ProcessRecord getRecordForAppLocked(
            IApplicationThread thread) {
        if (thread == null) {
            return null;
        }

        int appIndex = getLRURecordIndexForAppLocked(thread);
        return appIndex >= 0 ? mLruProcesses.get(appIndex) : null;
    }

    final void appDiedLocked(ProcessRecord app, int pid,
            IApplicationThread thread) {

        mProcDeaths[0]++;
        
        BatteryStatsImpl stats = mBatteryStatsService.getActiveStatistics();
        synchronized (stats) {
            stats.noteProcessDiedLocked(app.info.uid, pid);
        }

        // Clean up already done if the process has been re-started.
        if (app.pid == pid && app.thread != null &&
                app.thread.asBinder() == thread.asBinder()) {
            if (!app.killedBackground) {
                Slog.i(TAG, "Process " + app.processName + " (pid " + pid
                        + ") has died.");
            }
            EventLog.writeEvent(EventLogTags.AM_PROC_DIED, app.userId, app.pid, app.processName);
            if (DEBUG_CLEANUP) Slog.v(
                TAG, "Dying app: " + app + ", pid: " + pid
                + ", thread: " + thread.asBinder());
            boolean doLowMem = app.instrumentationClass == null;
            handleAppDiedLocked(app, false, true);

            if (doLowMem) {
                // If there are no longer any background processes running,
                // and the app that died was not running instrumentation,
                // then tell everyone we are now low on memory.
                boolean haveBg = false;
                for (int i=mLruProcesses.size()-1; i>=0; i--) {
                    ProcessRecord rec = mLruProcesses.get(i);
                    if (rec.thread != null && rec.setAdj >= ProcessList.HIDDEN_APP_MIN_ADJ) {
                        haveBg = true;
                        break;
                    }
                }
                
                if (!haveBg) {
                    EventLog.writeEvent(EventLogTags.AM_LOW_MEMORY, mLruProcesses.size());
                    long now = SystemClock.uptimeMillis();
                    for (int i=mLruProcesses.size()-1; i>=0; i--) {
                        ProcessRecord rec = mLruProcesses.get(i);
                        if (rec != app && rec.thread != null &&
                                (rec.lastLowMemory+GC_MIN_INTERVAL) <= now) {
                            // The low memory report is overriding any current
                            // state for a GC request.  Make sure to do
                            // heavy/important/visible/foreground processes first.
                            if (rec.setAdj <= ProcessList.HEAVY_WEIGHT_APP_ADJ) {
                                rec.lastRequestedGc = 0;
                            } else {
                                rec.lastRequestedGc = rec.lastLowMemory;
                            }
                            rec.reportLowMemory = true;
                            rec.lastLowMemory = now;
                            mProcessesToGc.remove(rec);
                            addProcessToGcListLocked(rec);
                        }
                    }
                    mHandler.sendEmptyMessage(REPORT_MEM_USAGE);
                    scheduleAppGcsLocked();
                }
            }
        } else if (app.pid != pid) {
            // A new process has already been started.
            Slog.i(TAG, "Process " + app.processName + " (pid " + pid
                    + ") has died and restarted (pid " + app.pid + ").");
            EventLog.writeEvent(EventLogTags.AM_PROC_DIED, app.userId, app.pid, app.processName);
        } else if (DEBUG_PROCESSES) {
            Slog.d(TAG, "Received spurious death notification for thread "
                    + thread.asBinder());
        }
    }

    /**
     * If a stack trace dump file is configured, dump process stack traces.
     * @param clearTraces causes the dump file to be erased prior to the new
     *    traces being written, if true; when false, the new traces will be
     *    appended to any existing file content.
     * @param firstPids of dalvik VM processes to dump stack traces for first
     * @param lastPids of dalvik VM processes to dump stack traces for last
     * @param nativeProcs optional list of native process names to dump stack crawls
     * @return file containing stack traces, or null if no dump file is configured
     */
    public static File dumpStackTraces(boolean clearTraces, ArrayList<Integer> firstPids,
            ProcessStats processStats, SparseArray<Boolean> lastPids, String[] nativeProcs) {
        String tracesPath = SystemProperties.get("dalvik.vm.stack-trace-file", null);
        if (tracesPath == null || tracesPath.length() == 0) {
            return null;
        }

        File tracesFile = new File(tracesPath);
        try {
            File tracesDir = tracesFile.getParentFile();
            if (!tracesDir.exists()) {
                tracesFile.mkdirs();
                if (!SELinux.restorecon(tracesDir)) {
                    return null;
                }
            }
            FileUtils.setPermissions(tracesDir.getPath(), 0775, -1, -1);  // drwxrwxr-x

            if (clearTraces && tracesFile.exists()) tracesFile.delete();
            tracesFile.createNewFile();
            FileUtils.setPermissions(tracesFile.getPath(), 0666, -1, -1); // -rw-rw-rw-
        } catch (IOException e) {
            Slog.w(TAG, "Unable to prepare ANR traces file: " + tracesPath, e);
            return null;
        }

        dumpStackTraces(tracesPath, firstPids, processStats, lastPids, nativeProcs);
        return tracesFile;
    }

    private static void dumpStackTraces(String tracesPath, ArrayList<Integer> firstPids,
            ProcessStats processStats, SparseArray<Boolean> lastPids, String[] nativeProcs) {
        // Use a FileObserver to detect when traces finish writing.
        // The order of traces is considered important to maintain for legibility.
        FileObserver observer = new FileObserver(tracesPath, FileObserver.CLOSE_WRITE) {
            public synchronized void onEvent(int event, String path) { notify(); }
        };

        try {
            observer.startWatching();

            // First collect all of the stacks of the most important pids.
            if (firstPids != null) {
                try {
                    int num = firstPids.size();
                    for (int i = 0; i < num; i++) {
                        synchronized (observer) {
                            Process.sendSignal(firstPids.get(i), Process.SIGNAL_QUIT);
                            observer.wait(200);  // Wait for write-close, give up after 200msec
                        }
                    }
                } catch (InterruptedException e) {
                    Log.wtf(TAG, e);
                }
            }

            // Next measure CPU usage.
            if (processStats != null) {
                processStats.init();
                System.gc();
                processStats.update();
                try {
                    synchronized (processStats) {
                        processStats.wait(500); // measure over 1/2 second.
                    }
                } catch (InterruptedException e) {
                }
                processStats.update();

                // We'll take the stack crawls of just the top apps using CPU.
                final int N = processStats.countWorkingStats();
                int numProcs = 0;
                for (int i=0; i<N && numProcs<5; i++) {
                    ProcessStats.Stats stats = processStats.getWorkingStats(i);
                    if (lastPids.indexOfKey(stats.pid) >= 0) {
                        numProcs++;
                        try {
                            synchronized (observer) {
                                Process.sendSignal(stats.pid, Process.SIGNAL_QUIT);
                                observer.wait(200);  // Wait for write-close, give up after 200msec
                            }
                        } catch (InterruptedException e) {
                            Log.wtf(TAG, e);
                        }

                    }
                }
            }

        } finally {
            observer.stopWatching();
        }

        if (nativeProcs != null) {
            int[] pids = Process.getPidsForCommands(nativeProcs);
            if (pids != null) {
                for (int pid : pids) {
                    Debug.dumpNativeBacktraceToFile(pid, tracesPath);
                }
            }
        }
    }

    final void logAppTooSlow(ProcessRecord app, long startTime, String msg) {
        if (true || IS_USER_BUILD) {
            return;
        }
        String tracesPath = SystemProperties.get("dalvik.vm.stack-trace-file", null);
        if (tracesPath == null || tracesPath.length() == 0) {
            return;
        }

        StrictMode.ThreadPolicy oldPolicy = StrictMode.allowThreadDiskReads();
        StrictMode.allowThreadDiskWrites();
        try {
            final File tracesFile = new File(tracesPath);
            final File tracesDir = tracesFile.getParentFile();
            final File tracesTmp = new File(tracesDir, "__tmp__");
            try {
                if (!tracesDir.exists()) {
                    tracesFile.mkdirs();
                    if (!SELinux.restorecon(tracesDir.getPath())) {
                        return;
                    }
                }
                FileUtils.setPermissions(tracesDir.getPath(), 0775, -1, -1);  // drwxrwxr-x

                if (tracesFile.exists()) {
                    tracesTmp.delete();
                    tracesFile.renameTo(tracesTmp);
                }
                StringBuilder sb = new StringBuilder();
                Time tobj = new Time();
                tobj.set(System.currentTimeMillis());
                sb.append(tobj.format("%Y-%m-%d %H:%M:%S"));
                sb.append(": ");
                TimeUtils.formatDuration(SystemClock.uptimeMillis()-startTime, sb);
                sb.append(" since ");
                sb.append(msg);
                FileOutputStream fos = new FileOutputStream(tracesFile);
                fos.write(sb.toString().getBytes());
                if (app == null) {
                    fos.write("\n*** No application process!".getBytes());
                }
                fos.close();
                FileUtils.setPermissions(tracesFile.getPath(), 0666, -1, -1); // -rw-rw-rw-
            } catch (IOException e) {
                Slog.w(TAG, "Unable to prepare slow app traces file: " + tracesPath, e);
                return;
            }

            if (app != null) {
                ArrayList<Integer> firstPids = new ArrayList<Integer>();
                firstPids.add(app.pid);
                dumpStackTraces(tracesPath, firstPids, null, null, null);
            }

            File lastTracesFile = null;
            File curTracesFile = null;
            for (int i=9; i>=0; i--) {
                String name = String.format("slow%02d.txt", i);
                curTracesFile = new File(tracesDir, name);
                if (curTracesFile.exists()) {
                    if (lastTracesFile != null) {
                        curTracesFile.renameTo(lastTracesFile);
                    } else {
                        curTracesFile.delete();
                    }
                }
                lastTracesFile = curTracesFile;
            }
            tracesFile.renameTo(curTracesFile);
            if (tracesTmp.exists()) {
                tracesTmp.renameTo(tracesFile);
            }
        } finally {
            StrictMode.setThreadPolicy(oldPolicy);
        }
    }

    final void appNotResponding(ProcessRecord app, ActivityRecord activity,
            ActivityRecord parent, boolean aboveSystem, final String annotation) {
        ArrayList<Integer> firstPids = new ArrayList<Integer>(5);
        SparseArray<Boolean> lastPids = new SparseArray<Boolean>(20);

        if (mController != null) {
            try {
                // 0 == continue, -1 = kill process immediately
                int res = mController.appEarlyNotResponding(app.processName, app.pid, annotation);
                if (res < 0 && app.pid != MY_PID) Process.killProcess(app.pid);
            } catch (RemoteException e) {
                mController = null;
            }
        }

        long anrTime = SystemClock.uptimeMillis();
        if (MONITOR_CPU_USAGE) {
            updateCpuStatsNow();
        }
        
        synchronized (this) {
            // PowerManager.reboot() can block for a long time, so ignore ANRs while shutting down.
            if (mShuttingDown) {
                Slog.i(TAG, "During shutdown skipping ANR: " + app + " " + annotation);
                return;
            } else if (app.notResponding) {
                Slog.i(TAG, "Skipping duplicate ANR: " + app + " " + annotation);
                return;
            } else if (app.crashing) {
                Slog.i(TAG, "Crashing app skipping ANR: " + app + " " + annotation);
                return;
            }
            
            // In case we come through here for the same app before completing
            // this one, mark as anring now so we will bail out.
            app.notResponding = true;

            // Log the ANR to the event log.
            EventLog.writeEvent(EventLogTags.AM_ANR, app.userId, app.pid,
                    app.processName, app.info.flags, annotation);

            // Dump thread traces as quickly as we can, starting with "interesting" processes.
            firstPids.add(app.pid);
    
            int parentPid = app.pid;
            if (parent != null && parent.app != null && parent.app.pid > 0) parentPid = parent.app.pid;
            if (parentPid != app.pid) firstPids.add(parentPid);
    
            if (MY_PID != app.pid && MY_PID != parentPid) firstPids.add(MY_PID);

            for (int i = mLruProcesses.size() - 1; i >= 0; i--) {
                ProcessRecord r = mLruProcesses.get(i);
                if (r != null && r.thread != null) {
                    int pid = r.pid;
                    if (pid > 0 && pid != app.pid && pid != parentPid && pid != MY_PID) {
                        if (r.persistent) {
                            firstPids.add(pid);
                        } else {
                            lastPids.put(pid, Boolean.TRUE);
                        }
                    }
                }
            }
        }

        // Log the ANR to the main log.
        StringBuilder info = new StringBuilder();
        info.setLength(0);
        info.append("ANR in ").append(app.processName);
        if (activity != null && activity.shortComponentName != null) {
            info.append(" (").append(activity.shortComponentName).append(")");
        }
        info.append("\n");
        if (annotation != null) {
            info.append("Reason: ").append(annotation).append("\n");
        }
        if (parent != null && parent != activity) {
            info.append("Parent: ").append(parent.shortComponentName).append("\n");
        }

        final ProcessStats processStats = new ProcessStats(true);

        File tracesFile = dumpStackTraces(true, firstPids, processStats, lastPids, null);

        String cpuInfo = null;
        if (MONITOR_CPU_USAGE) {
            updateCpuStatsNow();
            synchronized (mProcessStatsThread) {
                cpuInfo = mProcessStats.printCurrentState(anrTime);
            }
            info.append(processStats.printCurrentLoad());
            info.append(cpuInfo);
        }

        info.append(processStats.printCurrentState(anrTime));

        Slog.e(TAG, info.toString());
        if (tracesFile == null) {
            // There is no trace file, so dump (only) the alleged culprit's threads to the log
            Process.sendSignal(app.pid, Process.SIGNAL_QUIT);
        }

        addErrorToDropBox("anr", app, app.processName, activity, parent, annotation,
                cpuInfo, tracesFile, null);

        if (mController != null) {
            try {
                // 0 == show dialog, 1 = keep waiting, -1 = kill process immediately
                int res = mController.appNotResponding(app.processName, app.pid, info.toString());
                if (res != 0) {
                    if (res < 0 && app.pid != MY_PID) Process.killProcess(app.pid);
                    return;
                }
            } catch (RemoteException e) {
                mController = null;
            }
        }

        // Unless configured otherwise, swallow ANRs in background processes & kill the process.
        boolean showBackground = Settings.Secure.getInt(mContext.getContentResolver(),
                Settings.Secure.ANR_SHOW_BACKGROUND, 0) != 0;
        
        synchronized (this) {
            if (!showBackground && !app.isInterestingToUserLocked() && app.pid != MY_PID) {
                Slog.w(TAG, "Killing " + app + ": background ANR");
                EventLog.writeEvent(EventLogTags.AM_KILL, app.userId, app.pid,
                        app.processName, app.setAdj, "background ANR");
                Process.killProcessQuiet(app.pid);
                return;
            }
    
            // Set the app's notResponding state, and look up the errorReportReceiver
            makeAppNotRespondingLocked(app,
                    activity != null ? activity.shortComponentName : null,
                    annotation != null ? "ANR " + annotation : "ANR",
                    info.toString());
    
            // Bring up the infamous App Not Responding dialog
            Message msg = Message.obtain();
            HashMap map = new HashMap();
            msg.what = SHOW_NOT_RESPONDING_MSG;
            msg.obj = map;
            msg.arg1 = aboveSystem ? 1 : 0;
            map.put("app", app);
            if (activity != null) {
                map.put("activity", activity);
            }
    
            mHandler.sendMessage(msg);
        }
    }

    final void showLaunchWarningLocked(final ActivityRecord cur, final ActivityRecord next) {
        if (!mLaunchWarningShown) {
            mLaunchWarningShown = true;
            mHandler.post(new Runnable() {
                @Override
                public void run() {
                    synchronized (ActivityManagerService.this) {
                        final Dialog d = new LaunchWarningWindow(mContext, cur, next);
                        d.show();
                        mHandler.postDelayed(new Runnable() {
                            @Override
                            public void run() {
                                synchronized (ActivityManagerService.this) {
                                    d.dismiss();
                                    mLaunchWarningShown = false;
                                }
                            }
                        }, 4000);
                    }
                }
            });
        }
    }
    
    public boolean clearApplicationUserData(final String packageName,
            final IPackageDataObserver observer, int userId) {
        enforceNotIsolatedCaller("clearApplicationUserData");
        int uid = Binder.getCallingUid();
        int pid = Binder.getCallingPid();
        userId = handleIncomingUser(pid, uid,
                userId, false, true, "clearApplicationUserData", null);
        long callingId = Binder.clearCallingIdentity();
        try {
            IPackageManager pm = AppGlobals.getPackageManager();
            int pkgUid = -1;
            synchronized(this) {
                try {
                    pkgUid = pm.getPackageUid(packageName, userId);
                } catch (RemoteException e) {
                }
                if (pkgUid == -1) {
                    Slog.w(TAG, "Invalid packageName:" + packageName);
                    return false;
                }
                if (uid == pkgUid || checkComponentPermission(
                        android.Manifest.permission.CLEAR_APP_USER_DATA,
                        pid, uid, -1, true)
                        == PackageManager.PERMISSION_GRANTED) {
                    forceStopPackageLocked(packageName, pkgUid);
                } else {
                    throw new SecurityException(pid+" does not have permission:"+
                            android.Manifest.permission.CLEAR_APP_USER_DATA+" to clear data" +
                                    "for process:"+packageName);
                }
            }
            
            try {
                //clear application user data
                pm.clearApplicationUserData(packageName, observer, userId);
                Intent intent = new Intent(Intent.ACTION_PACKAGE_DATA_CLEARED,
                        Uri.fromParts("package", packageName, null));
                intent.putExtra(Intent.EXTRA_UID, pkgUid);
                broadcastIntentInPackage("android", Process.SYSTEM_UID, intent,
                        null, null, 0, null, null, null, false, false, userId);
            } catch (RemoteException e) {
            }
        } finally {
            Binder.restoreCallingIdentity(callingId);
        }
        return true;
    }

    public void killBackgroundProcesses(final String packageName, int userId) {
        if (checkCallingPermission(android.Manifest.permission.KILL_BACKGROUND_PROCESSES)
                != PackageManager.PERMISSION_GRANTED &&
                checkCallingPermission(android.Manifest.permission.RESTART_PACKAGES)
                        != PackageManager.PERMISSION_GRANTED) {
            String msg = "Permission Denial: killBackgroundProcesses() from pid="
                    + Binder.getCallingPid()
                    + ", uid=" + Binder.getCallingUid()
                    + " requires " + android.Manifest.permission.KILL_BACKGROUND_PROCESSES;
            Slog.w(TAG, msg);
            throw new SecurityException(msg);
        }

        userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(),
                userId, true, true, "killBackgroundProcesses", null);
        long callingId = Binder.clearCallingIdentity();
        try {
            IPackageManager pm = AppGlobals.getPackageManager();
            synchronized(this) {
                int appId = -1;
                try {
                    appId = UserHandle.getAppId(pm.getPackageUid(packageName, 0));
                } catch (RemoteException e) {
                }
                if (appId == -1) {
                    Slog.w(TAG, "Invalid packageName: " + packageName);
                    return;
                }
                killPackageProcessesLocked(packageName, appId, userId,
                        ProcessList.SERVICE_ADJ, false, true, true, false, "kill background");
            }
        } finally {
            Binder.restoreCallingIdentity(callingId);
        }
    }

    public void killAllBackgroundProcesses() {
        if (checkCallingPermission(android.Manifest.permission.KILL_BACKGROUND_PROCESSES)
                != PackageManager.PERMISSION_GRANTED) {
            String msg = "Permission Denial: killAllBackgroundProcesses() from pid="
                    + Binder.getCallingPid()
                    + ", uid=" + Binder.getCallingUid()
                    + " requires " + android.Manifest.permission.KILL_BACKGROUND_PROCESSES;
            Slog.w(TAG, msg);
            throw new SecurityException(msg);
        }
        
        long callingId = Binder.clearCallingIdentity();
        try {
            synchronized(this) {
                ArrayList<ProcessRecord> procs = new ArrayList<ProcessRecord>();
                for (SparseArray<ProcessRecord> apps : mProcessNames.getMap().values()) {
                    final int NA = apps.size();
                    for (int ia=0; ia<NA; ia++) {
                        ProcessRecord app = apps.valueAt(ia);
                        if (app.persistent) {
                            // we don't kill persistent processes
                            continue;
                        }
                        if (app.removed) {
                            procs.add(app);
                        } else if (app.setAdj >= ProcessList.HIDDEN_APP_MIN_ADJ) {
                            app.removed = true;
                            procs.add(app);
                        }
                    }
                }
                
                int N = procs.size();
                for (int i=0; i<N; i++) {
                    removeProcessLocked(procs.get(i), false, true, "kill all background");
                }
            }
        } finally {
            Binder.restoreCallingIdentity(callingId);
        }
    }

    public void forceStopPackage(final String packageName, int userId) {
        if (checkCallingPermission(android.Manifest.permission.FORCE_STOP_PACKAGES)
                != PackageManager.PERMISSION_GRANTED) {
            String msg = "Permission Denial: forceStopPackage() from pid="
                    + Binder.getCallingPid()
                    + ", uid=" + Binder.getCallingUid()
                    + " requires " + android.Manifest.permission.FORCE_STOP_PACKAGES;
            Slog.w(TAG, msg);
            throw new SecurityException(msg);
        }
        userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(),
                userId, true, true, "forceStopPackage", null);
        long callingId = Binder.clearCallingIdentity();
        try {
            IPackageManager pm = AppGlobals.getPackageManager();
            synchronized(this) {
                int[] users = userId == UserHandle.USER_ALL
                        ? getUsersLocked() : new int[] { userId };
                for (int user : users) {
                    int pkgUid = -1;
                    try {
                        pkgUid = pm.getPackageUid(packageName, user);
                    } catch (RemoteException e) {
                    }
                    if (pkgUid == -1) {
                        Slog.w(TAG, "Invalid packageName: " + packageName);
                        continue;
                    }
                    try {
                        pm.setPackageStoppedState(packageName, true, user);
                    } catch (RemoteException e) {
                    } catch (IllegalArgumentException e) {
                        Slog.w(TAG, "Failed trying to unstop package "
                                + packageName + ": " + e);
                    }
                    if (isUserRunningLocked(user, false)) {
                        forceStopPackageLocked(packageName, pkgUid);
                    }
                }
            }
        } finally {
            Binder.restoreCallingIdentity(callingId);
        }
    }

    /*
     * The pkg name and app id have to be specified.
     */
    public void killApplicationWithAppId(String pkg, int appid) {
        if (pkg == null) {
            return;
        }
        // Make sure the uid is valid.
        if (appid < 0) {
            Slog.w(TAG, "Invalid appid specified for pkg : " + pkg);
            return;
        }
        int callerUid = Binder.getCallingUid();
        // Only the system server can kill an application
        if (callerUid == Process.SYSTEM_UID) {
            // Post an aysnc message to kill the application
            Message msg = mHandler.obtainMessage(KILL_APPLICATION_MSG);
            msg.arg1 = appid;
            msg.arg2 = 0;
            msg.obj = pkg;
            mHandler.sendMessage(msg);
        } else {
            throw new SecurityException(callerUid + " cannot kill pkg: " +
                    pkg);
        }
    }

    public void closeSystemDialogs(String reason) {
        enforceNotIsolatedCaller("closeSystemDialogs");

        final int pid = Binder.getCallingPid();
        final int uid = Binder.getCallingUid();
        final long origId = Binder.clearCallingIdentity();
        try {
            synchronized (this) {
                // Only allow this from foreground processes, so that background
                // applications can't abuse it to prevent system UI from being shown.
                if (uid >= Process.FIRST_APPLICATION_UID) {
                    ProcessRecord proc;
                    synchronized (mPidsSelfLocked) {
                        proc = mPidsSelfLocked.get(pid);
                    }
                    if (proc.curRawAdj > ProcessList.PERCEPTIBLE_APP_ADJ) {
                        Slog.w(TAG, "Ignoring closeSystemDialogs " + reason
                                + " from background process " + proc);
                        return;
                    }
                }
                closeSystemDialogsLocked(reason);
            }
        } finally {
            Binder.restoreCallingIdentity(origId);
        }
    }

    void closeSystemDialogsLocked(String reason) {
        Intent intent = new Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
        intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY
                | Intent.FLAG_RECEIVER_FOREGROUND);
        if (reason != null) {
            intent.putExtra("reason", reason);
        }
        mWindowManager.closeSystemDialogs(reason);

        for (int i=mMainStack.mHistory.size()-1; i>=0; i--) {
            ActivityRecord r = (ActivityRecord)mMainStack.mHistory.get(i);
            if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) {
                r.stack.finishActivityLocked(r, i,
                        Activity.RESULT_CANCELED, null, "close-sys", true);
            }
        }

        broadcastIntentLocked(null, null, intent, null,
                null, 0, null, null, null, false, false, -1,
                Process.SYSTEM_UID, UserHandle.USER_ALL);
    }

    public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids)
            throws RemoteException {
        enforceNotIsolatedCaller("getProcessMemoryInfo");
        Debug.MemoryInfo[] infos = new Debug.MemoryInfo[pids.length];
        for (int i=pids.length-1; i>=0; i--) {
            infos[i] = new Debug.MemoryInfo();
            Debug.getMemoryInfo(pids[i], infos[i]);
        }
        return infos;
    }

    public long[] getProcessPss(int[] pids) throws RemoteException {
        enforceNotIsolatedCaller("getProcessPss");
        long[] pss = new long[pids.length];
        for (int i=pids.length-1; i>=0; i--) {
            pss[i] = Debug.getPss(pids[i]);
        }
        return pss;
    }

    public void killApplicationProcess(String processName, int uid) {
        if (processName == null) {
            return;
        }

        int callerUid = Binder.getCallingUid();
        // Only the system server can kill an application
        if (callerUid == Process.SYSTEM_UID) {
            synchronized (this) {
                ProcessRecord app = getProcessRecordLocked(processName, uid);
                if (app != null && app.thread != null) {
                    try {
                        app.thread.scheduleSuicide();
                    } catch (RemoteException e) {
                        // If the other end already died, then our work here is done.
                    }
                } else {
                    Slog.w(TAG, "Process/uid not found attempting kill of "
                            + processName + " / " + uid);
                }
            }
        } else {
            throw new SecurityException(callerUid + " cannot kill app process: " +
                    processName);
        }
    }

    private void forceStopPackageLocked(final String packageName, int uid) {
        forceStopPackageLocked(packageName, UserHandle.getAppId(uid), false,
                false, true, false, UserHandle.getUserId(uid));
        Intent intent = new Intent(Intent.ACTION_PACKAGE_RESTARTED,
                Uri.fromParts("package", packageName, null));
        if (!mProcessesReady) {
            intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY
                    | Intent.FLAG_RECEIVER_FOREGROUND);
        }
        intent.putExtra(Intent.EXTRA_UID, uid);
        intent.putExtra(Intent.EXTRA_USER_HANDLE, UserHandle.getUserId(uid));
        broadcastIntentLocked(null, null, intent,
                null, null, 0, null, null, null,
                false, false,
                MY_PID, Process.SYSTEM_UID, UserHandle.getUserId(uid));
    }

    private void forceStopUserLocked(int userId) {
        forceStopPackageLocked(null, -1, false, false, true, false, userId);
        Intent intent = new Intent(Intent.ACTION_USER_STOPPED);
        intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY
                | Intent.FLAG_RECEIVER_FOREGROUND);
        intent.putExtra(Intent.EXTRA_USER_HANDLE, userId);
        broadcastIntentLocked(null, null, intent,
                null, null, 0, null, null, null,
                false, false,
                MY_PID, Process.SYSTEM_UID, UserHandle.USER_ALL);
    }

    private final boolean killPackageProcessesLocked(String packageName, int appId,
            int userId, int minOomAdj, boolean callerWillRestart, boolean allowRestart,
            boolean doit, boolean evenPersistent, String reason) {
        ArrayList<ProcessRecord> procs = new ArrayList<ProcessRecord>();

        // Remove all processes this package may have touched: all with the
        // same UID (except for the system or root user), and all whose name
        // matches the package name.
        final String procNamePrefix = packageName != null ? (packageName + ":") : null;
        for (SparseArray<ProcessRecord> apps : mProcessNames.getMap().values()) {
            final int NA = apps.size();
            for (int ia=0; ia<NA; ia++) {
                ProcessRecord app = apps.valueAt(ia);
                if (app.persistent && !evenPersistent) {
                    // we don't kill persistent processes
                    continue;
                }
                if (app.removed) {
                    if (doit) {
                        procs.add(app);
                    }
                    continue;
                }

                // Skip process if it doesn't meet our oom adj requirement.
                if (app.setAdj < minOomAdj) {
                    continue;
                }

                // If no package is specified, we call all processes under the
                // give user id.
                if (packageName == null) {
                    if (app.userId != userId) {
                        continue;
                    }
                // Package has been specified, we want to hit all processes
                // that match it.  We need to qualify this by the processes
                // that are running under the specified app and user ID.
                } else {
                    if (UserHandle.getAppId(app.uid) != appId) {
                        continue;
                    }
                    if (userId != UserHandle.USER_ALL && app.userId != userId) {
                        continue;
                    }
                    if (!app.pkgList.contains(packageName)) {
                        continue;
                    }
                }

                // Process has passed all conditions, kill it!
                if (!doit) {
                    return true;
                }
                app.removed = true;
                procs.add(app);
            }
        }
        
        int N = procs.size();
        for (int i=0; i<N; i++) {
            removeProcessLocked(procs.get(i), callerWillRestart, allowRestart, reason);
        }
        return N > 0;
    }

    private final boolean forceStopPackageLocked(String name, int appId,
            boolean callerWillRestart, boolean purgeCache, boolean doit,
            boolean evenPersistent, int userId) {
        int i;
        int N;

        if (userId == UserHandle.USER_ALL && name == null) {
            Slog.w(TAG, "Can't force stop all processes of all users, that is insane!");
        }

        if (appId < 0 && name != null) {
            try {
                appId = UserHandle.getAppId(
                        AppGlobals.getPackageManager().getPackageUid(name, 0));
            } catch (RemoteException e) {
            }
        }

        if (doit) {
            if (name != null) {
                Slog.i(TAG, "Force stopping package " + name + " appid=" + appId
                        + " user=" + userId);
            } else {
                Slog.i(TAG, "Force stopping user " + userId);
            }

            Iterator<SparseArray<Long>> badApps = mProcessCrashTimes.getMap().values().iterator();
            while (badApps.hasNext()) {
                SparseArray<Long> ba = badApps.next();
                for (i=ba.size()-1; i>=0; i--) {
                    boolean remove = false;
                    final int entUid = ba.keyAt(i);
                    if (name != null) {
                        if (userId == UserHandle.USER_ALL) {
                            if (UserHandle.getAppId(entUid) == appId) {
                                remove = true;
                            }
                        } else {
                            if (entUid == UserHandle.getUid(userId, appId)) {
                                remove = true;
                            }
                        }
                    } else if (UserHandle.getUserId(entUid) == userId) {
                        remove = true;
                    }
                    if (remove) {
                        ba.removeAt(i);
                    }
                }
                if (ba.size() == 0) {
                    badApps.remove();
                }
            }
        }

        boolean didSomething = killPackageProcessesLocked(name, appId, userId,
                -100, callerWillRestart, true, doit, evenPersistent,
                name == null ? ("force stop user " + userId) : ("force stop " + name));
        
        TaskRecord lastTask = null;
        for (i=0; i<mMainStack.mHistory.size(); i++) {
            ActivityRecord r = (ActivityRecord)mMainStack.mHistory.get(i);
            final boolean samePackage = r.packageName.equals(name)
                    || (name == null && r.userId == userId);
            if ((userId == UserHandle.USER_ALL || r.userId == userId)
                    && (samePackage || r.task == lastTask)
                    && (r.app == null || evenPersistent || !r.app.persistent)) {
                if (!doit) {
                    if (r.finishing) {
                        // If this activity is just finishing, then it is not
                        // interesting as far as something to stop.
                        continue;
                    }
                    return true;
                }
                didSomething = true;
                Slog.i(TAG, "  Force finishing activity " + r);
                if (samePackage) {
                    if (r.app != null) {
                        r.app.removed = true;
                    }
                    r.app = null;
                }
                lastTask = r.task;
                if (r.stack.finishActivityLocked(r, i, Activity.RESULT_CANCELED,
                        null, "force-stop", true)) {
                    i--;
                }
            }
        }

        if (mServices.forceStopLocked(name, userId, evenPersistent, doit)) {
            if (!doit) {
                return true;
            }
            didSomething = true;
        }

        if (name == null) {
            // Remove all sticky broadcasts from this user.
            mStickyBroadcasts.remove(userId);
        }

        ArrayList<ContentProviderRecord> providers = new ArrayList<ContentProviderRecord>();
        if (mProviderMap.collectForceStopProviders(name, appId, doit, evenPersistent,
                userId, providers)) {
            if (!doit) {
                return true;
            }
            didSomething = true;
        }
        N = providers.size();
        for (i=0; i<N; i++) {
            removeDyingProviderLocked(null, providers.get(i), true);
        }

        if (name == null) {
            // Remove pending intents.  For now we only do this when force
            // stopping users, because we have some problems when doing this
            // for packages -- app widgets are not currently cleaned up for
            // such packages, so they can be left with bad pending intents.
            if (mIntentSenderRecords.size() > 0) {
                Iterator<WeakReference<PendingIntentRecord>> it
                        = mIntentSenderRecords.values().iterator();
                while (it.hasNext()) {
                    WeakReference<PendingIntentRecord> wpir = it.next();
                    if (wpir == null) {
                        it.remove();
                        continue;
                    }
                    PendingIntentRecord pir = wpir.get();
                    if (pir == null) {
                        it.remove();
                        continue;
                    }
                    if (name == null) {
                        // Stopping user, remove all objects for the user.
                        if (pir.key.userId != userId) {
                            // Not the same user, skip it.
                            continue;
                        }
                    } else {
                        if (UserHandle.getAppId(pir.uid) != appId) {
                            // Different app id, skip it.
                            continue;
                        }
                        if (userId != UserHandle.USER_ALL && pir.key.userId != userId) {
                            // Different user, skip it.
                            continue;
                        }
                        if (!pir.key.packageName.equals(name)) {
                            // Different package, skip it.
                            continue;
                        }
                    }
                    if (!doit) {
                        return true;
                    }
                    didSomething = true;
                    it.remove();
                    pir.canceled = true;
                    if (pir.key.activity != null) {
                        pir.key.activity.pendingResults.remove(pir.ref);
                    }
                }
            }
        }

        if (doit) {
            if (purgeCache && name != null) {
                AttributeCache ac = AttributeCache.instance();
                if (ac != null) {
                    ac.removePackage(name);
                }
            }
            if (mBooted) {
                mMainStack.resumeTopActivityLocked(null);
                mMainStack.scheduleIdleLocked();
            }
        }
        
        return didSomething;
    }

    private final boolean removeProcessLocked(ProcessRecord app,
            boolean callerWillRestart, boolean allowRestart, String reason) {
        final String name = app.processName;
        final int uid = app.uid;
        if (DEBUG_PROCESSES) Slog.d(
            TAG, "Force removing proc " + app.toShortString() + " (" + name
            + "/" + uid + ")");

        mProcessNames.remove(name, uid);
        mIsolatedProcesses.remove(app.uid);
        if (mHeavyWeightProcess == app) {
            mHandler.sendMessage(mHandler.obtainMessage(CANCEL_HEAVY_NOTIFICATION_MSG,
                    mHeavyWeightProcess.userId, 0));
            mHeavyWeightProcess = null;
        }
        boolean needRestart = false;
        if (app.pid > 0 && app.pid != MY_PID) {
            int pid = app.pid;
            synchronized (mPidsSelfLocked) {
                mPidsSelfLocked.remove(pid);
                mHandler.removeMessages(PROC_START_TIMEOUT_MSG, app);
            }
            Slog.i(TAG, "Killing proc " + app.toShortString() + ": " + reason);
            handleAppDiedLocked(app, true, allowRestart);
            mLruProcesses.remove(app);
            Process.killProcessQuiet(pid);
            
            if (app.persistent && !app.isolated) {
                if (!callerWillRestart) {
                    addAppLocked(app.info, false);
                } else {
                    needRestart = true;
                }
            }
        } else {
            mRemovedProcesses.add(app);
        }
        
        return needRestart;
    }

    private final void processStartTimedOutLocked(ProcessRecord app) {
        final int pid = app.pid;
        boolean gone = false;
        synchronized (mPidsSelfLocked) {
            ProcessRecord knownApp = mPidsSelfLocked.get(pid);
            if (knownApp != null && knownApp.thread == null) {
                mPidsSelfLocked.remove(pid);
                gone = true;
            }        
        }
        
        if (gone) {
            Slog.w(TAG, "Process " + app + " failed to attach");
            EventLog.writeEvent(EventLogTags.AM_PROCESS_START_TIMEOUT, app.userId,
                    pid, app.uid, app.processName);
            mProcessNames.remove(app.processName, app.uid);
            mIsolatedProcesses.remove(app.uid);
            if (mHeavyWeightProcess == app) {
                mHandler.sendMessage(mHandler.obtainMessage(CANCEL_HEAVY_NOTIFICATION_MSG,
                        mHeavyWeightProcess.userId, 0));
                mHeavyWeightProcess = null;
            }
            // Take care of any launching providers waiting for this process.
            checkAppInLaunchingProvidersLocked(app, true);
            // Take care of any services that are waiting for the process.
            mServices.processStartTimedOutLocked(app);
            EventLog.writeEvent(EventLogTags.AM_KILL, app.userId, pid,
                    app.processName, app.setAdj, "start timeout");
            Process.killProcessQuiet(pid);
            if (mBackupTarget != null && mBackupTarget.app.pid == pid) {
                Slog.w(TAG, "Unattached app died before backup, skipping");
                try {
                    IBackupManager bm = IBackupManager.Stub.asInterface(
                            ServiceManager.getService(Context.BACKUP_SERVICE));
                    bm.agentDisconnected(app.info.packageName);
                } catch (RemoteException e) {
                    // Can't happen; the backup manager is local
                }
            }
            if (isPendingBroadcastProcessLocked(pid)) {
                Slog.w(TAG, "Unattached app died before broadcast acknowledged, skipping");
                skipPendingBroadcastLocked(pid);
            }
        } else {
            Slog.w(TAG, "Spurious process start timeout - pid not known for " + app);
        }
    }

    private final boolean attachApplicationLocked(IApplicationThread thread,
            int pid) {

        // Find the application record that is being attached...  either via
        // the pid if we are running in multiple processes, or just pull the
        // next app record if we are emulating process with anonymous threads.
        ProcessRecord app;
        if (pid != MY_PID && pid >= 0) {
            synchronized (mPidsSelfLocked) {
                app = mPidsSelfLocked.get(pid);
            }
        } else {
            app = null;
        }

        if (app == null) {
            Slog.w(TAG, "No pending application record for pid " + pid
                    + " (IApplicationThread " + thread + "); dropping process");
            EventLog.writeEvent(EventLogTags.AM_DROP_PROCESS, pid);
            if (pid > 0 && pid != MY_PID) {
                Process.killProcessQuiet(pid);
            } else {
                try {
                    thread.scheduleExit();
                } catch (Exception e) {
                    // Ignore exceptions.
                }
            }
            return false;
        }

        // If this application record is still attached to a previous
        // process, clean it up now.
        if (app.thread != null) {
            handleAppDiedLocked(app, true, true);
        }

        // Tell the process all about itself.

        if (localLOGV) Slog.v(
                TAG, "Binding process pid " + pid + " to record " + app);

        String processName = app.processName;
        try {
            AppDeathRecipient adr = new AppDeathRecipient(
                    app, pid, thread);
            thread.asBinder().linkToDeath(adr, 0);
            app.deathRecipient = adr;
        } catch (RemoteException e) {
            app.resetPackageList();
            startProcessLocked(app, "link fail", processName);
            return false;
        }

        EventLog.writeEvent(EventLogTags.AM_PROC_BOUND, app.userId, app.pid, app.processName);
        
        app.thread = thread;
        app.curAdj = app.setAdj = -100;
        app.curSchedGroup = Process.THREAD_GROUP_DEFAULT;
        app.setSchedGroup = Process.THREAD_GROUP_BG_NONINTERACTIVE;
        app.forcingToForeground = null;
        app.foregroundServices = false;
        app.hasShownUi = false;
        app.debugging = false;

        mHandler.removeMessages(PROC_START_TIMEOUT_MSG, app);

        boolean normalMode = mProcessesReady || isAllowedWhileBooting(app.info);
        List providers = normalMode ? generateApplicationProvidersLocked(app) : null;

        if (!normalMode) {
            Slog.i(TAG, "Launching preboot mode app: " + app);
        }
        
        if (localLOGV) Slog.v(
            TAG, "New app record " + app
            + " thread=" + thread.asBinder() + " pid=" + pid);
        try {
            int testMode = IApplicationThread.DEBUG_OFF;
            if (mDebugApp != null && mDebugApp.equals(processName)) {
                testMode = mWaitForDebugger
                    ? IApplicationThread.DEBUG_WAIT
                    : IApplicationThread.DEBUG_ON;
                app.debugging = true;
                if (mDebugTransient) {
                    mDebugApp = mOrigDebugApp;
                    mWaitForDebugger = mOrigWaitForDebugger;
                }
            }
            String profileFile = app.instrumentationProfileFile;
            ParcelFileDescriptor profileFd = null;
            boolean profileAutoStop = false;
            if (mProfileApp != null && mProfileApp.equals(processName)) {
                mProfileProc = app;
                profileFile = mProfileFile;
                profileFd = mProfileFd;
                profileAutoStop = mAutoStopProfiler;
            }
            boolean enableOpenGlTrace = false;
            if (mOpenGlTraceApp != null && mOpenGlTraceApp.equals(processName)) {
                enableOpenGlTrace = true;
                mOpenGlTraceApp = null;
            }

            // If the app is being launched for restore or full backup, set it up specially
            boolean isRestrictedBackupMode = false;
            if (mBackupTarget != null && mBackupAppName.equals(processName)) {
                isRestrictedBackupMode = (mBackupTarget.backupMode == BackupRecord.RESTORE)
                        || (mBackupTarget.backupMode == BackupRecord.RESTORE_FULL)
                        || (mBackupTarget.backupMode == BackupRecord.BACKUP_FULL);
            }
            
            ensurePackageDexOpt(app.instrumentationInfo != null
                    ? app.instrumentationInfo.packageName
                    : app.info.packageName);
            if (app.instrumentationClass != null) {
                ensurePackageDexOpt(app.instrumentationClass.getPackageName());
            }
            if (DEBUG_CONFIGURATION) Slog.v(TAG, "Binding proc "
                    + processName + " with config " + mConfiguration);
            ApplicationInfo appInfo = app.instrumentationInfo != null
                    ? app.instrumentationInfo : app.info;
            app.compat = compatibilityInfoForPackageLocked(appInfo);
            if (profileFd != null) {
                profileFd = profileFd.dup();
            }
            thread.bindApplication(processName, appInfo, providers,
                    app.instrumentationClass, profileFile, profileFd, profileAutoStop,
                    app.instrumentationArguments, app.instrumentationWatcher,
                    app.instrumentationUiAutomationConnection, testMode, enableOpenGlTrace,
                    isRestrictedBackupMode || !normalMode, app.persistent,
                    new Configuration(mConfiguration), app.compat, getCommonServicesLocked(),
                    mCoreSettingsObserver.getCoreSettingsLocked());
            updateLruProcessLocked(app, false);
            app.lastRequestedGc = app.lastLowMemory = SystemClock.uptimeMillis();
        } catch (Exception e) {
            // todo: Yikes!  What should we do?  For now we will try to
            // start another process, but that could easily get us in
            // an infinite loop of restarting processes...
            Slog.w(TAG, "Exception thrown during bind!", e);

            app.resetPackageList();
            app.unlinkDeathRecipient();
            startProcessLocked(app, "bind fail", processName);
            return false;
        }

        // Remove this record from the list of starting applications.
        mPersistentStartingProcesses.remove(app);
        if (DEBUG_PROCESSES && mProcessesOnHold.contains(app)) Slog.v(TAG,
                "Attach application locked removing on hold: " + app);
        mProcessesOnHold.remove(app);

        boolean badApp = false;
        boolean didSomething = false;

        // See if the top visible activity is waiting to run in this process...
        ActivityRecord hr = mMainStack.topRunningActivityLocked(null);
        if (hr != null && normalMode) {
            if (hr.app == null && app.uid == hr.info.applicationInfo.uid
                    && processName.equals(hr.processName)) {
                try {
                    if (mHeadless) {
                        Slog.e(TAG, "Starting activities not supported on headless device: " + hr);
                    } else if (mMainStack.realStartActivityLocked(hr, app, true, true)) {
                        didSomething = true;
                    }
                } catch (Exception e) {
                    Slog.w(TAG, "Exception in new application when starting activity "
                          + hr.intent.getComponent().flattenToShortString(), e);
                    badApp = true;
                }
            } else {
                mMainStack.ensureActivitiesVisibleLocked(hr, null, processName, 0);
            }
        }

        // Find any services that should be running in this process...
        if (!badApp) {
            try {
                didSomething |= mServices.attachApplicationLocked(app, processName);
            } catch (Exception e) {
                badApp = true;
            }
        }

        // Check if a next-broadcast receiver is in this process...
        if (!badApp && isPendingBroadcastProcessLocked(pid)) {
            try {
                didSomething = sendPendingBroadcastsLocked(app);
            } catch (Exception e) {
                // If the app died trying to launch the receiver we declare it 'bad'
                badApp = true;
            }
        }

        // Check whether the next backup agent is in this process...
        if (!badApp && mBackupTarget != null && mBackupTarget.appInfo.uid == app.uid) {
            if (DEBUG_BACKUP) Slog.v(TAG, "New app is backup target, launching agent for " + app);
            ensurePackageDexOpt(mBackupTarget.appInfo.packageName);
            try {
                thread.scheduleCreateBackupAgent(mBackupTarget.appInfo,
                        compatibilityInfoForPackageLocked(mBackupTarget.appInfo),
                        mBackupTarget.backupMode);
            } catch (Exception e) {
                Slog.w(TAG, "Exception scheduling backup agent creation: ");
                e.printStackTrace();
            }
        }

        if (badApp) {
            // todo: Also need to kill application to deal with all
            // kinds of exceptions.
            handleAppDiedLocked(app, false, true);
            return false;
        }

        if (!didSomething) {
            updateOomAdjLocked();
        }

        return true;
    }

    public final void attachApplication(IApplicationThread thread) {
        synchronized (this) {
            int callingPid = Binder.getCallingPid();
            final long origId = Binder.clearCallingIdentity();
            attachApplicationLocked(thread, callingPid);
            Binder.restoreCallingIdentity(origId);
        }
    }

    public final void activityIdle(IBinder token, Configuration config, boolean stopProfiling) {
        final long origId = Binder.clearCallingIdentity();
        ActivityRecord r = mMainStack.activityIdleInternal(token, false, config);
        if (stopProfiling) {
            synchronized (this) {
                if (mProfileProc == r.app) {
                    if (mProfileFd != null) {
                        try {
                            mProfileFd.close();
                        } catch (IOException e) {
                        }
                        clearProfilerLocked();
                    }
                }
            }
        }
        Binder.restoreCallingIdentity(origId);
    }

    void enableScreenAfterBoot() {
        EventLog.writeEvent(EventLogTags.BOOT_PROGRESS_ENABLE_SCREEN,
                SystemClock.uptimeMillis());
        mWindowManager.enableScreenAfterBoot();

        synchronized (this) {
            updateEventDispatchingLocked();
        }
    }

    public void showBootMessage(final CharSequence msg, final boolean always) {
        enforceNotIsolatedCaller("showBootMessage");
        mWindowManager.showBootMessage(msg, always);
    }

    public void dismissKeyguardOnNextActivity() {
        enforceNotIsolatedCaller("dismissKeyguardOnNextActivity");
        final long token = Binder.clearCallingIdentity();
        try {
            synchronized (this) {
                if (mLockScreenShown) {
                    mLockScreenShown = false;
                    comeOutOfSleepIfNeededLocked();
                }
                mMainStack.dismissKeyguardOnNextActivityLocked();
            }
        } finally {
            Binder.restoreCallingIdentity(token);
        }
    }

    final void finishBooting() {
        IntentFilter pkgFilter = new IntentFilter();
        pkgFilter.addAction(Intent.ACTION_QUERY_PACKAGE_RESTART);
        pkgFilter.addDataScheme("package");
        mContext.registerReceiver(new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                String[] pkgs = intent.getStringArrayExtra(Intent.EXTRA_PACKAGES);
                if (pkgs != null) {
                    for (String pkg : pkgs) {
                        synchronized (ActivityManagerService.this) {
                            if (forceStopPackageLocked(pkg, -1, false, false, false, false, 0)) {
                                setResultCode(Activity.RESULT_OK);
                                return;
                            }
                        }
                    }
                }
            }
        }, pkgFilter);

        synchronized (this) {
            // Ensure that any processes we had put on hold are now started
            // up.
            final int NP = mProcessesOnHold.size();
            if (NP > 0) {
                ArrayList<ProcessRecord> procs =
                    new ArrayList<ProcessRecord>(mProcessesOnHold);
                for (int ip=0; ip<NP; ip++) {
                    if (DEBUG_PROCESSES) Slog.v(TAG, "Starting process on hold: "
                            + procs.get(ip));
                    startProcessLocked(procs.get(ip), "on-hold", null);
                }
            }
            
            if (mFactoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL) {
                // Start looking for apps that are abusing wake locks.
                Message nmsg = mHandler.obtainMessage(CHECK_EXCESSIVE_WAKE_LOCKS_MSG);
                mHandler.sendMessageDelayed(nmsg, POWER_CHECK_DELAY);
                // Tell anyone interested that we are done booting!
                SystemProperties.set("sys.boot_completed", "1");
                SystemProperties.set("dev.bootcomplete", "1");
                for (int i=0; i<mStartedUsers.size(); i++) {
                    UserStartedState uss = mStartedUsers.valueAt(i);
                    if (uss.mState == UserStartedState.STATE_BOOTING) {
                        uss.mState = UserStartedState.STATE_RUNNING;
                        final int userId = mStartedUsers.keyAt(i);
                        Intent intent = new Intent(Intent.ACTION_BOOT_COMPLETED, null);
                        intent.putExtra(Intent.EXTRA_USER_HANDLE, userId);
                        broadcastIntentLocked(null, null, intent,
                                null, null, 0, null, null,
                                android.Manifest.permission.RECEIVE_BOOT_COMPLETED,
                                false, false, MY_PID, Process.SYSTEM_UID, userId);
                    }
                }
            }
        }
    }
    
    final void ensureBootCompleted() {
        boolean booting;
        boolean enableScreen;
        synchronized (this) {
            booting = mBooting;
            mBooting = false;
            enableScreen = !mBooted;
            mBooted = true;
        }
        
        if (booting) {
            finishBooting();
        }

        if (enableScreen) {
            enableScreenAfterBoot();
        }
    }

    public final void activityResumed(IBinder token) {
        final long origId = Binder.clearCallingIdentity();
        mMainStack.activityResumed(token);
        Binder.restoreCallingIdentity(origId);
    }

    public final void activityPaused(IBinder token) {
        final long origId = Binder.clearCallingIdentity();
        mMainStack.activityPaused(token, false);
        Binder.restoreCallingIdentity(origId);
    }

    public final void activityStopped(IBinder token, Bundle icicle, Bitmap thumbnail,
            CharSequence description) {
        if (localLOGV) Slog.v(
            TAG, "Activity stopped: token=" + token);

        // Refuse possible leaked file descriptors
        if (icicle != null && icicle.hasFileDescriptors()) {
            throw new IllegalArgumentException("File descriptors passed in Bundle");
        }

        ActivityRecord r = null;

        final long origId = Binder.clearCallingIdentity();

        synchronized (this) {
            r = mMainStack.isInStackLocked(token);
            if (r != null) {
                r.stack.activityStoppedLocked(r, icicle, thumbnail, description);
            }
        }

        if (r != null) {
            sendPendingThumbnail(r, null, null, null, false);
        }

        trimApplications();

        Binder.restoreCallingIdentity(origId);
    }

    public final void activityDestroyed(IBinder token) {
        if (DEBUG_SWITCH) Slog.v(TAG, "ACTIVITY DESTROYED: " + token);
        mMainStack.activityDestroyed(token);
    }
    
    public String getCallingPackage(IBinder token) {
        synchronized (this) {
            ActivityRecord r = getCallingRecordLocked(token);
            return r != null && r.app != null ? r.info.packageName : null;
        }
    }

    public ComponentName getCallingActivity(IBinder token) {
        synchronized (this) {
            ActivityRecord r = getCallingRecordLocked(token);
            return r != null ? r.intent.getComponent() : null;
        }
    }

    private ActivityRecord getCallingRecordLocked(IBinder token) {
        ActivityRecord r = mMainStack.isInStackLocked(token);
        if (r == null) {
            return null;
        }
        return r.resultTo;
    }

    public ComponentName getActivityClassForToken(IBinder token) {
        synchronized(this) {
            ActivityRecord r = mMainStack.isInStackLocked(token);
            if (r == null) {
                return null;
            }
            return r.intent.getComponent();
        }
    }

    public String getPackageForToken(IBinder token) {
        synchronized(this) {
            ActivityRecord r = mMainStack.isInStackLocked(token);
            if (r == null) {
                return null;
            }
            return r.packageName;
        }
    }

    public IIntentSender getIntentSender(int type,
            String packageName, IBinder token, String resultWho,
            int requestCode, Intent[] intents, String[] resolvedTypes,
            int flags, Bundle options, int userId) {
        enforceNotIsolatedCaller("getIntentSender");
        // Refuse possible leaked file descriptors
        if (intents != null) {
            if (intents.length < 1) {
                throw new IllegalArgumentException("Intents array length must be >= 1");
            }
            for (int i=0; i<intents.length; i++) {
                Intent intent = intents[i];
                if (intent != null) {
                    if (intent.hasFileDescriptors()) {
                        throw new IllegalArgumentException("File descriptors passed in Intent");
                    }
                    if (type == ActivityManager.INTENT_SENDER_BROADCAST &&
                            (intent.getFlags()&Intent.FLAG_RECEIVER_BOOT_UPGRADE) != 0) {
                        throw new IllegalArgumentException(
                                "Can't use FLAG_RECEIVER_BOOT_UPGRADE here");
                    }
                    intents[i] = new Intent(intent);
                }
            }
            if (resolvedTypes != null && resolvedTypes.length != intents.length) {
                throw new IllegalArgumentException(
                        "Intent array length does not match resolvedTypes length");
            }
        }
        if (options != null) {
            if (options.hasFileDescriptors()) {
                throw new IllegalArgumentException("File descriptors passed in options");
            }
        }
        
        synchronized(this) {
            int callingUid = Binder.getCallingUid();
            int origUserId = userId;
            userId = handleIncomingUser(Binder.getCallingPid(), callingUid, userId,
                    type == ActivityManager.INTENT_SENDER_BROADCAST, false,
                    "getIntentSender", null);
            if (origUserId == UserHandle.USER_CURRENT) {
                // We don't want to evaluate this until the pending intent is
                // actually executed.  However, we do want to always do the
                // security checking for it above.
                userId = UserHandle.USER_CURRENT;
            }
            try {
                if (callingUid != 0 && callingUid != Process.SYSTEM_UID) {
                    int uid = AppGlobals.getPackageManager()
                            .getPackageUid(packageName, UserHandle.getUserId(callingUid));
                    if (!UserHandle.isSameApp(callingUid, uid)) {
                        String msg = "Permission Denial: getIntentSender() from pid="
                            + Binder.getCallingPid()
                            + ", uid=" + Binder.getCallingUid()
                            + ", (need uid=" + uid + ")"
                            + " is not allowed to send as package " + packageName;
                        Slog.w(TAG, msg);
                        throw new SecurityException(msg);
                    }
                }

                return getIntentSenderLocked(type, packageName, callingUid, userId,
                        token, resultWho, requestCode, intents, resolvedTypes, flags, options);
                
            } catch (RemoteException e) {
                throw new SecurityException(e);
            }
        }
    }
    
    IIntentSender getIntentSenderLocked(int type, String packageName,
            int callingUid, int userId, IBinder token, String resultWho,
            int requestCode, Intent[] intents, String[] resolvedTypes, int flags,
            Bundle options) {
        if (DEBUG_MU)
            Slog.v(TAG_MU, "getIntentSenderLocked(): uid=" + callingUid);
        ActivityRecord activity = null;
        if (type == ActivityManager.INTENT_SENDER_ACTIVITY_RESULT) {
            activity = mMainStack.isInStackLocked(token);
            if (activity == null) {
                return null;
            }
            if (activity.finishing) {
                return null;
            }
        }

        final boolean noCreate = (flags&PendingIntent.FLAG_NO_CREATE) != 0;
        final boolean cancelCurrent = (flags&PendingIntent.FLAG_CANCEL_CURRENT) != 0;
        final boolean updateCurrent = (flags&PendingIntent.FLAG_UPDATE_CURRENT) != 0;
        flags &= ~(PendingIntent.FLAG_NO_CREATE|PendingIntent.FLAG_CANCEL_CURRENT
                |PendingIntent.FLAG_UPDATE_CURRENT);

        PendingIntentRecord.Key key = new PendingIntentRecord.Key(
                type, packageName, activity, resultWho,
                requestCode, intents, resolvedTypes, flags, options, userId);
        WeakReference<PendingIntentRecord> ref;
        ref = mIntentSenderRecords.get(key);
        PendingIntentRecord rec = ref != null ? ref.get() : null;
        if (rec != null) {
            if (!cancelCurrent) {
                if (updateCurrent) {
                    if (rec.key.requestIntent != null) {
                        rec.key.requestIntent.replaceExtras(intents != null ?
                                intents[intents.length - 1] : null);
                    }
                    if (intents != null) {
                        intents[intents.length-1] = rec.key.requestIntent;
                        rec.key.allIntents = intents;
                        rec.key.allResolvedTypes = resolvedTypes;
                    } else {
                        rec.key.allIntents = null;
                        rec.key.allResolvedTypes = null;
                    }
                }
                return rec;
            }
            rec.canceled = true;
            mIntentSenderRecords.remove(key);
        }
        if (noCreate) {
            return rec;
        }
        rec = new PendingIntentRecord(this, key, callingUid);
        mIntentSenderRecords.put(key, rec.ref);
        if (type == ActivityManager.INTENT_SENDER_ACTIVITY_RESULT) {
            if (activity.pendingResults == null) {
                activity.pendingResults
                        = new HashSet<WeakReference<PendingIntentRecord>>();
            }
            activity.pendingResults.add(rec.ref);
        }
        return rec;
    }

    public void cancelIntentSender(IIntentSender sender) {
        if (!(sender instanceof PendingIntentRecord)) {
            return;
        }
        synchronized(this) {
            PendingIntentRecord rec = (PendingIntentRecord)sender;
            try {
                int uid = AppGlobals.getPackageManager()
                        .getPackageUid(rec.key.packageName, UserHandle.getCallingUserId());
                if (!UserHandle.isSameApp(uid, Binder.getCallingUid())) {
                    String msg = "Permission Denial: cancelIntentSender() from pid="
                        + Binder.getCallingPid()
                        + ", uid=" + Binder.getCallingUid()
                        + " is not allowed to cancel packges "
                        + rec.key.packageName;
                    Slog.w(TAG, msg);
                    throw new SecurityException(msg);
                }
            } catch (RemoteException e) {
                throw new SecurityException(e);
            }
            cancelIntentSenderLocked(rec, true);
        }
    }

    void cancelIntentSenderLocked(PendingIntentRecord rec, boolean cleanActivity) {
        rec.canceled = true;
        mIntentSenderRecords.remove(rec.key);
        if (cleanActivity && rec.key.activity != null) {
            rec.key.activity.pendingResults.remove(rec.ref);
        }
    }

    public String getPackageForIntentSender(IIntentSender pendingResult) {
        if (!(pendingResult instanceof PendingIntentRecord)) {
            return null;
        }
        try {
            PendingIntentRecord res = (PendingIntentRecord)pendingResult;
            return res.key.packageName;
        } catch (ClassCastException e) {
        }
        return null;
    }

    public int getUidForIntentSender(IIntentSender sender) {
        if (sender instanceof PendingIntentRecord) {
            try {
                PendingIntentRecord res = (PendingIntentRecord)sender;
                return res.uid;
            } catch (ClassCastException e) {
            }
        }
        return -1;
    }

    public boolean isIntentSenderTargetedToPackage(IIntentSender pendingResult) {
        if (!(pendingResult instanceof PendingIntentRecord)) {
            return false;
        }
        try {
            PendingIntentRecord res = (PendingIntentRecord)pendingResult;
            if (res.key.allIntents == null) {
                return false;
            }
            for (int i=0; i<res.key.allIntents.length; i++) {
                Intent intent = res.key.allIntents[i];
                if (intent.getPackage() != null && intent.getComponent() != null) {
                    return false;
                }
            }
            return true;
        } catch (ClassCastException e) {
        }
        return false;
    }

    public boolean isIntentSenderAnActivity(IIntentSender pendingResult) {
        if (!(pendingResult instanceof PendingIntentRecord)) {
            return false;
        }
        try {
            PendingIntentRecord res = (PendingIntentRecord)pendingResult;
            if (res.key.type == ActivityManager.INTENT_SENDER_ACTIVITY) {
                return true;
            }
            return false;
        } catch (ClassCastException e) {
        }
        return false;
    }

    public Intent getIntentForIntentSender(IIntentSender pendingResult) {
        if (!(pendingResult instanceof PendingIntentRecord)) {
            return null;
        }
        try {
            PendingIntentRecord res = (PendingIntentRecord)pendingResult;
            return res.key.requestIntent != null ? new Intent(res.key.requestIntent) : null;
        } catch (ClassCastException e) {
        }
        return null;
    }

    public void setProcessLimit(int max) {
        enforceCallingPermission(android.Manifest.permission.SET_PROCESS_LIMIT,
                "setProcessLimit()");
        synchronized (this) {
            mProcessLimit = max < 0 ? ProcessList.MAX_HIDDEN_APPS : max;
            mProcessLimitOverride = max;
        }
        trimApplications();
    }

    public int getProcessLimit() {
        synchronized (this) {
            return mProcessLimitOverride;
        }
    }

    void foregroundTokenDied(ForegroundToken token) {
        synchronized (ActivityManagerService.this) {
            synchronized (mPidsSelfLocked) {
                ForegroundToken cur
                    = mForegroundProcesses.get(token.pid);
                if (cur != token) {
                    return;
                }
                mForegroundProcesses.remove(token.pid);
                ProcessRecord pr = mPidsSelfLocked.get(token.pid);
                if (pr == null) {
                    return;
                }
                pr.forcingToForeground = null;
                pr.foregroundServices = false;
            }
            updateOomAdjLocked();
        }
    }
    
    public void setProcessForeground(IBinder token, int pid, boolean isForeground) {
        enforceCallingPermission(android.Manifest.permission.SET_PROCESS_LIMIT,
                "setProcessForeground()");
        synchronized(this) {
            boolean changed = false;
            
            synchronized (mPidsSelfLocked) {
                ProcessRecord pr = mPidsSelfLocked.get(pid);
                if (pr == null && isForeground) {
                    Slog.w(TAG, "setProcessForeground called on unknown pid: " + pid);
                    return;
                }
                ForegroundToken oldToken = mForegroundProcesses.get(pid);
                if (oldToken != null) {
                    oldToken.token.unlinkToDeath(oldToken, 0);
                    mForegroundProcesses.remove(pid);
                    if (pr != null) {
                        pr.forcingToForeground = null;
                    }
                    changed = true;
                }
                if (isForeground && token != null) {
                    ForegroundToken newToken = new ForegroundToken() {
                        public void binderDied() {
                            foregroundTokenDied(this);
                        }
                    };
                    newToken.pid = pid;
                    newToken.token = token;
                    try {
                        token.linkToDeath(newToken, 0);
                        mForegroundProcesses.put(pid, newToken);
                        pr.forcingToForeground = token;
                        changed = true;
                    } catch (RemoteException e) {
                        // If the process died while doing this, we will later
                        // do the cleanup with the process death link.
                    }
                }
            }
            
            if (changed) {
                updateOomAdjLocked();
            }
        }
    }
    
    // =========================================================
    // PERMISSIONS
    // =========================================================

    static class PermissionController extends IPermissionController.Stub {
        ActivityManagerService mActivityManagerService;
        PermissionController(ActivityManagerService activityManagerService) {
            mActivityManagerService = activityManagerService;
        }

        public boolean checkPermission(String permission, int pid, int uid) {
            return mActivityManagerService.checkPermission(permission, pid,
                    uid) == PackageManager.PERMISSION_GRANTED;
        }
    }

    /**
     * This can be called with or without the global lock held.
     */
    int checkComponentPermission(String permission, int pid, int uid,
            int owningUid, boolean exported) {
        // We might be performing an operation on behalf of an indirect binder
        // invocation, e.g. via {@link #openContentUri}.  Check and adjust the
        // client identity accordingly before proceeding.
        Identity tlsIdentity = sCallerIdentity.get();
        if (tlsIdentity != null) {
            Slog.d(TAG, "checkComponentPermission() adjusting {pid,uid} to {"
                    + tlsIdentity.pid + "," + tlsIdentity.uid + "}");
            uid = tlsIdentity.uid;
            pid = tlsIdentity.pid;
        }

        if (pid == MY_PID) {
            return PackageManager.PERMISSION_GRANTED;
        }

        return ActivityManager.checkComponentPermission(permission, uid,
                owningUid, exported);
    }

    /**
     * As the only public entry point for permissions checking, this method
     * can enforce the semantic that requesting a check on a null global
     * permission is automatically denied.  (Internally a null permission
     * string is used when calling {@link #checkComponentPermission} in cases
     * when only uid-based security is needed.)
     * 
     * This can be called with or without the global lock held.
     */
    public int checkPermission(String permission, int pid, int uid) {
        if (permission == null) {
            return PackageManager.PERMISSION_DENIED;
        }
        return checkComponentPermission(permission, pid, UserHandle.getAppId(uid), -1, true);
    }

    /**
     * Binder IPC calls go through the public entry point.
     * This can be called with or without the global lock held.
     */
    int checkCallingPermission(String permission) {
        return checkPermission(permission,
                Binder.getCallingPid(),
                UserHandle.getAppId(Binder.getCallingUid()));
    }

    /**
     * This can be called with or without the global lock held.
     */
    void enforceCallingPermission(String permission, String func) {
        if (checkCallingPermission(permission)
                == PackageManager.PERMISSION_GRANTED) {
            return;
        }

        String msg = "Permission Denial: " + func + " from pid="
                + Binder.getCallingPid()
                + ", uid=" + Binder.getCallingUid()
                + " requires " + permission;
        Slog.w(TAG, msg);
        throw new SecurityException(msg);
    }

    /**
     * Determine if UID is holding permissions required to access {@link Uri} in
     * the given {@link ProviderInfo}. Final permission checking is always done
     * in {@link ContentProvider}.
     */
    private final boolean checkHoldingPermissionsLocked(
            IPackageManager pm, ProviderInfo pi, Uri uri, int uid, int modeFlags) {
        if (DEBUG_URI_PERMISSION) Slog.v(TAG,
                "checkHoldingPermissionsLocked: uri=" + uri + " uid=" + uid);

        if (pi.applicationInfo.uid == uid) {
            return true;
        } else if (!pi.exported) {
            return false;
        }

        boolean readMet = (modeFlags & Intent.FLAG_GRANT_READ_URI_PERMISSION) == 0;
        boolean writeMet = (modeFlags & Intent.FLAG_GRANT_WRITE_URI_PERMISSION) == 0;
        try {
            // check if target holds top-level <provider> permissions
            if (!readMet && pi.readPermission != null
                    && (pm.checkUidPermission(pi.readPermission, uid) == PERMISSION_GRANTED)) {
                readMet = true;
            }
            if (!writeMet && pi.writePermission != null
                    && (pm.checkUidPermission(pi.writePermission, uid) == PERMISSION_GRANTED)) {
                writeMet = true;
            }

            // track if unprotected read/write is allowed; any denied
            // <path-permission> below removes this ability
            boolean allowDefaultRead = pi.readPermission == null;
            boolean allowDefaultWrite = pi.writePermission == null;

            // check if target holds any <path-permission> that match uri
            final PathPermission[] pps = pi.pathPermissions;
            if (pps != null) {
                final String path = uri.getPath();
                int i = pps.length;
                while (i > 0 && (!readMet || !writeMet)) {
                    i--;
                    PathPermission pp = pps[i];
                    if (pp.match(path)) {
                        if (!readMet) {
                            final String pprperm = pp.getReadPermission();
                            if (DEBUG_URI_PERMISSION) Slog.v(TAG, "Checking read perm for "
                                    + pprperm + " for " + pp.getPath()
                                    + ": match=" + pp.match(path)
                                    + " check=" + pm.checkUidPermission(pprperm, uid));
                            if (pprperm != null) {
                                if (pm.checkUidPermission(pprperm, uid) == PERMISSION_GRANTED) {
                                    readMet = true;
                                } else {
                                    allowDefaultRead = false;
                                }
                            }
                        }
                        if (!writeMet) {
                            final String ppwperm = pp.getWritePermission();
                            if (DEBUG_URI_PERMISSION) Slog.v(TAG, "Checking write perm "
                                    + ppwperm + " for " + pp.getPath()
                                    + ": match=" + pp.match(path)
                                    + " check=" + pm.checkUidPermission(ppwperm, uid));
                            if (ppwperm != null) {
                                if (pm.checkUidPermission(ppwperm, uid) == PERMISSION_GRANTED) {
                                    writeMet = true;
                                } else {
                                    allowDefaultWrite = false;
                                }
                            }
                        }
                    }
                }
            }

            // grant unprotected <provider> read/write, if not blocked by
            // <path-permission> above
            if (allowDefaultRead) readMet = true;
            if (allowDefaultWrite) writeMet = true;

        } catch (RemoteException e) {
            return false;
        }

        return readMet && writeMet;
    }

    private final boolean checkUriPermissionLocked(Uri uri, int uid,
            int modeFlags) {
        // Root gets to do everything.
        if (uid == 0) {
            return true;
        }
        HashMap<Uri, UriPermission> perms = mGrantedUriPermissions.get(uid);
        if (perms == null) return false;
        UriPermission perm = perms.get(uri);
        if (perm == null) return false;
        return (modeFlags&perm.modeFlags) == modeFlags;
    }

    public int checkUriPermission(Uri uri, int pid, int uid, int modeFlags) {
        enforceNotIsolatedCaller("checkUriPermission");

        // Another redirected-binder-call permissions check as in
        // {@link checkComponentPermission}.
        Identity tlsIdentity = sCallerIdentity.get();
        if (tlsIdentity != null) {
            uid = tlsIdentity.uid;
            pid = tlsIdentity.pid;
        }

        // Our own process gets to do everything.
        if (pid == MY_PID) {
            return PackageManager.PERMISSION_GRANTED;
        }
        synchronized(this) {
            return checkUriPermissionLocked(uri, uid, modeFlags)
                    ? PackageManager.PERMISSION_GRANTED
                    : PackageManager.PERMISSION_DENIED;
        }
    }

    /**
     * Check if the targetPkg can be granted permission to access uri by
     * the callingUid using the given modeFlags.  Throws a security exception
     * if callingUid is not allowed to do this.  Returns the uid of the target
     * if the URI permission grant should be performed; returns -1 if it is not
     * needed (for example targetPkg already has permission to access the URI).
     * If you already know the uid of the target, you can supply it in
     * lastTargetUid else set that to -1.
     */
    int checkGrantUriPermissionLocked(int callingUid, String targetPkg,
            Uri uri, int modeFlags, int lastTargetUid) {
        modeFlags &= (Intent.FLAG_GRANT_READ_URI_PERMISSION
                | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
        if (modeFlags == 0) {
            return -1;
        }

        if (targetPkg != null) {
            if (DEBUG_URI_PERMISSION) Slog.v(TAG,
                    "Checking grant " + targetPkg + " permission to " + uri);
        }
        
        final IPackageManager pm = AppGlobals.getPackageManager();

        // If this is not a content: uri, we can't do anything with it.
        if (!ContentResolver.SCHEME_CONTENT.equals(uri.getScheme())) {
            if (DEBUG_URI_PERMISSION) Slog.v(TAG, 
                    "Can't grant URI permission for non-content URI: " + uri);
            return -1;
        }

        String name = uri.getAuthority();
        ProviderInfo pi = null;
        ContentProviderRecord cpr = mProviderMap.getProviderByName(name,
                UserHandle.getUserId(callingUid));
        if (cpr != null) {
            pi = cpr.info;
        } else {
            try {
                pi = pm.resolveContentProvider(name,
                        PackageManager.GET_URI_PERMISSION_PATTERNS,
                        UserHandle.getUserId(callingUid));
            } catch (RemoteException ex) {
            }
        }
        if (pi == null) {
            Slog.w(TAG, "No content provider found for permission check: " + uri.toSafeString());
            return -1;
        }

        int targetUid = lastTargetUid;
        if (targetUid < 0 && targetPkg != null) {
            try {
                targetUid = pm.getPackageUid(targetPkg, UserHandle.getUserId(callingUid));
                if (targetUid < 0) {
                    if (DEBUG_URI_PERMISSION) Slog.v(TAG,
                            "Can't grant URI permission no uid for: " + targetPkg);
                    return -1;
                }
            } catch (RemoteException ex) {
                return -1;
            }
        }

        if (targetUid >= 0) {
            // First...  does the target actually need this permission?
            if (checkHoldingPermissionsLocked(pm, pi, uri, targetUid, modeFlags)) {
                // No need to grant the target this permission.
                if (DEBUG_URI_PERMISSION) Slog.v(TAG,
                        "Target " + targetPkg + " already has full permission to " + uri);
                return -1;
            }
        } else {
            // First...  there is no target package, so can anyone access it?
            boolean allowed = pi.exported;
            if ((modeFlags&Intent.FLAG_GRANT_READ_URI_PERMISSION) != 0) {
                if (pi.readPermission != null) {
                    allowed = false;
                }
            }
            if ((modeFlags&Intent.FLAG_GRANT_WRITE_URI_PERMISSION) != 0) {
                if (pi.writePermission != null) {
                    allowed = false;
                }
            }
            if (allowed) {
                return -1;
            }
        }

        // Second...  is the provider allowing granting of URI permissions?
        if (!pi.grantUriPermissions) {
            throw new SecurityException("Provider " + pi.packageName
                    + "/" + pi.name
                    + " does not allow granting of Uri permissions (uri "
                    + uri + ")");
        }
        if (pi.uriPermissionPatterns != null) {
            final int N = pi.uriPermissionPatterns.length;
            boolean allowed = false;
            for (int i=0; i<N; i++) {
                if (pi.uriPermissionPatterns[i] != null
                        && pi.uriPermissionPatterns[i].match(uri.getPath())) {
                    allowed = true;
                    break;
                }
            }
            if (!allowed) {
                throw new SecurityException("Provider " + pi.packageName
                        + "/" + pi.name
                        + " does not allow granting of permission to path of Uri "
                        + uri);
            }
        }

        // Third...  does the caller itself have permission to access
        // this uri?
        if (callingUid != Process.myUid()) {
            if (!checkHoldingPermissionsLocked(pm, pi, uri, callingUid, modeFlags)) {
                if (!checkUriPermissionLocked(uri, callingUid, modeFlags)) {
                    throw new SecurityException("Uid " + callingUid
                            + " does not have permission to uri " + uri);
                }
            }
        }

        return targetUid;
    }

    public int checkGrantUriPermission(int callingUid, String targetPkg,
            Uri uri, int modeFlags) {
        enforceNotIsolatedCaller("checkGrantUriPermission");
        synchronized(this) {
            return checkGrantUriPermissionLocked(callingUid, targetPkg, uri, modeFlags, -1);
        }
    }

    void grantUriPermissionUncheckedLocked(int targetUid, String targetPkg,
            Uri uri, int modeFlags, UriPermissionOwner owner) {
        modeFlags &= (Intent.FLAG_GRANT_READ_URI_PERMISSION
                | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
        if (modeFlags == 0) {
            return;
        }

        // So here we are: the caller has the assumed permission
        // to the uri, and the target doesn't.  Let's now give this to
        // the target.

        if (DEBUG_URI_PERMISSION) Slog.v(TAG, 
                "Granting " + targetPkg + "/" + targetUid + " permission to " + uri);
        
        HashMap<Uri, UriPermission> targetUris
                = mGrantedUriPermissions.get(targetUid);
        if (targetUris == null) {
            targetUris = new HashMap<Uri, UriPermission>();
            mGrantedUriPermissions.put(targetUid, targetUris);
        }

        UriPermission perm = targetUris.get(uri);
        if (perm == null) {
            perm = new UriPermission(targetUid, uri);
            targetUris.put(uri, perm);
        }

        perm.modeFlags |= modeFlags;
        if (owner == null) {
            perm.globalModeFlags |= modeFlags;
        } else {
            if ((modeFlags&Intent.FLAG_GRANT_READ_URI_PERMISSION) != 0) {
                 perm.readOwners.add(owner);
                 owner.addReadPermission(perm);
            }
            if ((modeFlags&Intent.FLAG_GRANT_WRITE_URI_PERMISSION) != 0) {
                 perm.writeOwners.add(owner);
                 owner.addWritePermission(perm);
            }
        }
    }

    void grantUriPermissionLocked(int callingUid, String targetPkg, Uri uri,
            int modeFlags, UriPermissionOwner owner) {
        if (targetPkg == null) {
            throw new NullPointerException("targetPkg");
        }

        int targetUid = checkGrantUriPermissionLocked(callingUid, targetPkg, uri, modeFlags, -1);
        if (targetUid < 0) {
            return;
        }

        grantUriPermissionUncheckedLocked(targetUid, targetPkg, uri, modeFlags, owner);
    }

    static class NeededUriGrants extends ArrayList<Uri> {
        final String targetPkg;
        final int targetUid;
        final int flags;

        NeededUriGrants(String _targetPkg, int _targetUid, int _flags) {
            targetPkg = _targetPkg;
            targetUid = _targetUid;
            flags = _flags;
        }
    }

    /**
     * Like checkGrantUriPermissionLocked, but takes an Intent.
     */
    NeededUriGrants checkGrantUriPermissionFromIntentLocked(int callingUid,
            String targetPkg, Intent intent, int mode, NeededUriGrants needed) {
        if (DEBUG_URI_PERMISSION) Slog.v(TAG,
                "Checking URI perm to data=" + (intent != null ? intent.getData() : null)
                + " clip=" + (intent != null ? intent.getClipData() : null)
                + " from " + intent + "; flags=0x"
                + Integer.toHexString(intent != null ? intent.getFlags() : 0));

        if (targetPkg == null) {
            throw new NullPointerException("targetPkg");
        }

        if (intent == null) {
            return null;
        }
        Uri data = intent.getData();
        ClipData clip = intent.getClipData();
        if (data == null && clip == null) {
            return null;
        }
        if (data != null) {
            int target = checkGrantUriPermissionLocked(callingUid, targetPkg, data,
                mode, needed != null ? needed.targetUid : -1);
            if (target > 0) {
                if (needed == null) {
                    needed = new NeededUriGrants(targetPkg, target, mode);
                }
                needed.add(data);
            }
        }
        if (clip != null) {
            for (int i=0; i<clip.getItemCount(); i++) {
                Uri uri = clip.getItemAt(i).getUri();
                if (uri != null) {
                    int target = -1;
                    target = checkGrantUriPermissionLocked(callingUid, targetPkg, uri,
                            mode, needed != null ? needed.targetUid : -1);
                    if (target > 0) {
                        if (needed == null) {
                            needed = new NeededUriGrants(targetPkg, target, mode);
                        }
                        needed.add(uri);
                    }
                } else {
                    Intent clipIntent = clip.getItemAt(i).getIntent();
                    if (clipIntent != null) {
                        NeededUriGrants newNeeded = checkGrantUriPermissionFromIntentLocked(
                                callingUid, targetPkg, clipIntent, mode, needed);
                        if (newNeeded != null) {
                            needed = newNeeded;
                        }
                    }
                }
            }
        }

        return needed;
    }

    /**
     * Like grantUriPermissionUncheckedLocked, but takes an Intent.
     */
    void grantUriPermissionUncheckedFromIntentLocked(NeededUriGrants needed,
            UriPermissionOwner owner) {
        if (needed != null) {
            for (int i=0; i<needed.size(); i++) {
                grantUriPermissionUncheckedLocked(needed.targetUid, needed.targetPkg,
                        needed.get(i), needed.flags, owner);
            }
        }
    }

    void grantUriPermissionFromIntentLocked(int callingUid,
            String targetPkg, Intent intent, UriPermissionOwner owner) {
        NeededUriGrants needed = checkGrantUriPermissionFromIntentLocked(callingUid, targetPkg,
                intent, intent != null ? intent.getFlags() : 0, null);
        if (needed == null) {
            return;
        }

        grantUriPermissionUncheckedFromIntentLocked(needed, owner);
    }

    public void grantUriPermission(IApplicationThread caller, String targetPkg,
            Uri uri, int modeFlags) {
        enforceNotIsolatedCaller("grantUriPermission");
        synchronized(this) {
            final ProcessRecord r = getRecordForAppLocked(caller);
            if (r == null) {
                throw new SecurityException("Unable to find app for caller "
                        + caller
                        + " when granting permission to uri " + uri);
            }
            if (targetPkg == null) {
                throw new IllegalArgumentException("null target");
            }
            if (uri == null) {
                throw new IllegalArgumentException("null uri");
            }

            grantUriPermissionLocked(r.uid, targetPkg, uri, modeFlags,
                    null);
        }
    }

    void removeUriPermissionIfNeededLocked(UriPermission perm) {
        if ((perm.modeFlags&(Intent.FLAG_GRANT_READ_URI_PERMISSION
                |Intent.FLAG_GRANT_WRITE_URI_PERMISSION)) == 0) {
            HashMap<Uri, UriPermission> perms
                    = mGrantedUriPermissions.get(perm.uid);
            if (perms != null) {
                if (DEBUG_URI_PERMISSION) Slog.v(TAG, 
                        "Removing " + perm.uid + " permission to " + perm.uri);
                perms.remove(perm.uri);
                if (perms.size() == 0) {
                    mGrantedUriPermissions.remove(perm.uid);
                }
            }
        }
    }

    private void revokeUriPermissionLocked(int callingUid, Uri uri,
            int modeFlags) {
        modeFlags &= (Intent.FLAG_GRANT_READ_URI_PERMISSION
                | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
        if (modeFlags == 0) {
            return;
        }

        if (DEBUG_URI_PERMISSION) Slog.v(TAG, 
                "Revoking all granted permissions to " + uri);
        
        final IPackageManager pm = AppGlobals.getPackageManager();

        final String authority = uri.getAuthority();
        ProviderInfo pi = null;
        int userId = UserHandle.getUserId(callingUid);
        ContentProviderRecord cpr = mProviderMap.getProviderByName(authority, userId);
        if (cpr != null) {
            pi = cpr.info;
        } else {
            try {
                pi = pm.resolveContentProvider(authority,
                        PackageManager.GET_URI_PERMISSION_PATTERNS, userId);
            } catch (RemoteException ex) {
            }
        }
        if (pi == null) {
            Slog.w(TAG, "No content provider found for permission revoke: " + uri.toSafeString());
            return;
        }

        // Does the caller have this permission on the URI?
        if (!checkHoldingPermissionsLocked(pm, pi, uri, callingUid, modeFlags)) {
            // Right now, if you are not the original owner of the permission,
            // you are not allowed to revoke it.
            //if (!checkUriPermissionLocked(uri, callingUid, modeFlags)) {
                throw new SecurityException("Uid " + callingUid
                        + " does not have permission to uri " + uri);
            //}
        }

        // Go through all of the permissions and remove any that match.
        final List<String> SEGMENTS = uri.getPathSegments();
        if (SEGMENTS != null) {
            final int NS = SEGMENTS.size();
            int N = mGrantedUriPermissions.size();
            for (int i=0; i<N; i++) {
                HashMap<Uri, UriPermission> perms
                        = mGrantedUriPermissions.valueAt(i);
                Iterator<UriPermission> it = perms.values().iterator();
            toploop:
                while (it.hasNext()) {
                    UriPermission perm = it.next();
                    Uri targetUri = perm.uri;
                    if (!authority.equals(targetUri.getAuthority())) {
                        continue;
                    }
                    List<String> targetSegments = targetUri.getPathSegments();
                    if (targetSegments == null) {
                        continue;
                    }
                    if (targetSegments.size() < NS) {
                        continue;
                    }
                    for (int j=0; j<NS; j++) {
                        if (!SEGMENTS.get(j).equals(targetSegments.get(j))) {
                            continue toploop;
                        }
                    }
                    if (DEBUG_URI_PERMISSION) Slog.v(TAG, 
                            "Revoking " + perm.uid + " permission to " + perm.uri);
                    perm.clearModes(modeFlags);
                    if (perm.modeFlags == 0) {
                        it.remove();
                    }
                }
                if (perms.size() == 0) {
                    mGrantedUriPermissions.remove(
                            mGrantedUriPermissions.keyAt(i));
                    N--;
                    i--;
                }
            }
        }
    }

    public void revokeUriPermission(IApplicationThread caller, Uri uri,
            int modeFlags) {
        enforceNotIsolatedCaller("revokeUriPermission");
        synchronized(this) {
            final ProcessRecord r = getRecordForAppLocked(caller);
            if (r == null) {
                throw new SecurityException("Unable to find app for caller "
                        + caller
                        + " when revoking permission to uri " + uri);
            }
            if (uri == null) {
                Slog.w(TAG, "revokeUriPermission: null uri");
                return;
            }

            modeFlags &= (Intent.FLAG_GRANT_READ_URI_PERMISSION
                    | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
            if (modeFlags == 0) {
                return;
            }

            final IPackageManager pm = AppGlobals.getPackageManager();

            final String authority = uri.getAuthority();
            ProviderInfo pi = null;
            ContentProviderRecord cpr = mProviderMap.getProviderByName(authority, r.userId);
            if (cpr != null) {
                pi = cpr.info;
            } else {
                try {
                    pi = pm.resolveContentProvider(authority,
                            PackageManager.GET_URI_PERMISSION_PATTERNS, r.userId);
                } catch (RemoteException ex) {
                }
            }
            if (pi == null) {
                Slog.w(TAG, "No content provider found for permission revoke: "
                        + uri.toSafeString());
                return;
            }

            revokeUriPermissionLocked(r.uid, uri, modeFlags);
        }
    }

    @Override
    public IBinder newUriPermissionOwner(String name) {
        enforceNotIsolatedCaller("newUriPermissionOwner");
        synchronized(this) {
            UriPermissionOwner owner = new UriPermissionOwner(this, name);
            return owner.getExternalTokenLocked();
        }
    }

    @Override
    public void grantUriPermissionFromOwner(IBinder token, int fromUid, String targetPkg,
            Uri uri, int modeFlags) {
        synchronized(this) {
            UriPermissionOwner owner = UriPermissionOwner.fromExternalToken(token);
            if (owner == null) {
                throw new IllegalArgumentException("Unknown owner: " + token);
            }
            if (fromUid != Binder.getCallingUid()) {
                if (Binder.getCallingUid() != Process.myUid()) {
                    // Only system code can grant URI permissions on behalf
                    // of other users.
                    throw new SecurityException("nice try");
                }
            }
            if (targetPkg == null) {
                throw new IllegalArgumentException("null target");
            }
            if (uri == null) {
                throw new IllegalArgumentException("null uri");
            }

            grantUriPermissionLocked(fromUid, targetPkg, uri, modeFlags, owner);
        }
    }

    @Override
    public void revokeUriPermissionFromOwner(IBinder token, Uri uri, int mode) {
        synchronized(this) {
            UriPermissionOwner owner = UriPermissionOwner.fromExternalToken(token);
            if (owner == null) {
                throw new IllegalArgumentException("Unknown owner: " + token);
            }

            if (uri == null) {
                owner.removeUriPermissionsLocked(mode);
            } else {
                owner.removeUriPermissionLocked(uri, mode);
            }
        }
    }

    public void showWaitingForDebugger(IApplicationThread who, boolean waiting) {
        synchronized (this) {
            ProcessRecord app =
                who != null ? getRecordForAppLocked(who) : null;
            if (app == null) return;

            Message msg = Message.obtain();
            msg.what = WAIT_FOR_DEBUGGER_MSG;
            msg.obj = app;
            msg.arg1 = waiting ? 1 : 0;
            mHandler.sendMessage(msg);
        }
    }

    public void getMemoryInfo(ActivityManager.MemoryInfo outInfo) {
        final long homeAppMem = mProcessList.getMemLevel(ProcessList.HOME_APP_ADJ);
        final long hiddenAppMem = mProcessList.getMemLevel(ProcessList.HIDDEN_APP_MIN_ADJ);
        outInfo.availMem = Process.getFreeMemory();
        outInfo.totalMem = Process.getTotalMemory();
        outInfo.threshold = homeAppMem;
        outInfo.lowMemory = outInfo.availMem < (homeAppMem + ((hiddenAppMem-homeAppMem)/2));
        outInfo.hiddenAppThreshold = hiddenAppMem;
        outInfo.secondaryServerThreshold = mProcessList.getMemLevel(
                ProcessList.SERVICE_ADJ);
        outInfo.visibleAppThreshold = mProcessList.getMemLevel(
                ProcessList.VISIBLE_APP_ADJ);
        outInfo.foregroundAppThreshold = mProcessList.getMemLevel(
                ProcessList.FOREGROUND_APP_ADJ);
    }
    
    // =========================================================
    // TASK MANAGEMENT
    // =========================================================

    public List getTasks(int maxNum, int flags,
                         IThumbnailReceiver receiver) {
        ArrayList list = new ArrayList();

        PendingThumbnailsRecord pending = null;
        IApplicationThread topThumbnail = null;
        ActivityRecord topRecord = null;

        synchronized(this) {
            if (localLOGV) Slog.v(
                TAG, "getTasks: max=" + maxNum + ", flags=" + flags
                + ", receiver=" + receiver);

            if (checkCallingPermission(android.Manifest.permission.GET_TASKS)
                    != PackageManager.PERMISSION_GRANTED) {
                if (receiver != null) {
                    // If the caller wants to wait for pending thumbnails,
                    // it ain't gonna get them.
                    try {
                        receiver.finished();
                    } catch (RemoteException ex) {
                    }
                }
                String msg = "Permission Denial: getTasks() from pid="
                        + Binder.getCallingPid()
                        + ", uid=" + Binder.getCallingUid()
                        + " requires " + android.Manifest.permission.GET_TASKS;
                Slog.w(TAG, msg);
                throw new SecurityException(msg);
            }

            int pos = mMainStack.mHistory.size()-1;
            ActivityRecord next =
                pos >= 0 ? (ActivityRecord)mMainStack.mHistory.get(pos) : null;
            ActivityRecord top = null;
            TaskRecord curTask = null;
            int numActivities = 0;
            int numRunning = 0;
            while (pos >= 0 && maxNum > 0) {
                final ActivityRecord r = next;
                pos--;
                next = pos >= 0 ? (ActivityRecord)mMainStack.mHistory.get(pos) : null;

                // Initialize state for next task if needed.
                if (top == null ||
                        (top.state == ActivityState.INITIALIZING
                            && top.task == r.task)) {
                    top = r;
                    curTask = r.task;
                    numActivities = numRunning = 0;
                }

                // Add 'r' into the current task.
                numActivities++;
                if (r.app != null && r.app.thread != null) {
                    numRunning++;
                }

                if (localLOGV) Slog.v(
                    TAG, r.intent.getComponent().flattenToShortString()
                    + ": task=" + r.task);

                // If the next one is a different task, generate a new
                // TaskInfo entry for what we have.
                if (next == null || next.task != curTask) {
                    ActivityManager.RunningTaskInfo ci
                            = new ActivityManager.RunningTaskInfo();
                    ci.id = curTask.taskId;
                    ci.baseActivity = r.intent.getComponent();
                    ci.topActivity = top.intent.getComponent();
                    if (top.thumbHolder != null) {
                        ci.description = top.thumbHolder.lastDescription;
                    }
                    ci.numActivities = numActivities;
                    ci.numRunning = numRunning;
                    //System.out.println(
                    //    "#" + maxNum + ": " + " descr=" + ci.description);
                    if (ci.thumbnail == null && receiver != null) {
                        if (localLOGV) Slog.v(
                            TAG, "State=" + top.state + "Idle=" + top.idle
                            + " app=" + top.app
                            + " thr=" + (top.app != null ? top.app.thread : null));
                        if (top.state == ActivityState.RESUMED
                                || top.state == ActivityState.PAUSING) {
                            if (top.idle && top.app != null
                                && top.app.thread != null) {
                                topRecord = top;
                                topThumbnail = top.app.thread;
                            } else {
                                top.thumbnailNeeded = true;
                            }
                        }
                        if (pending == null) {
                            pending = new PendingThumbnailsRecord(receiver);
                        }
                        pending.pendingRecords.add(top);
                    }
                    list.add(ci);
                    maxNum--;
                    top = null;
                }
            }

            if (pending != null) {
                mPendingThumbnails.add(pending);
            }
        }

        if (localLOGV) Slog.v(TAG, "We have pending thumbnails: " + pending);

        if (topThumbnail != null) {
            if (localLOGV) Slog.v(TAG, "Requesting top thumbnail");
            try {
                topThumbnail.requestThumbnail(topRecord.appToken);
            } catch (Exception e) {
                Slog.w(TAG, "Exception thrown when requesting thumbnail", e);
                sendPendingThumbnail(null, topRecord.appToken, null, null, true);
            }
        }

        if (pending == null && receiver != null) {
            // In this case all thumbnails were available and the client
            // is being asked to be told when the remaining ones come in...
            // which is unusually, since the top-most currently running
            // activity should never have a canned thumbnail!  Oh well.
            try {
                receiver.finished();
            } catch (RemoteException ex) {
            }
        }

        return list;
    }

    public List<ActivityManager.RecentTaskInfo> getRecentTasks(int maxNum,
            int flags, int userId) {
        userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), userId,
                false, true, "getRecentTasks", null);

        synchronized (this) {
            enforceCallingPermission(android.Manifest.permission.GET_TASKS,
                    "getRecentTasks()");
            final boolean detailed = checkCallingPermission(
                    android.Manifest.permission.GET_DETAILED_TASKS)
                    == PackageManager.PERMISSION_GRANTED;

            IPackageManager pm = AppGlobals.getPackageManager();

            final int N = mRecentTasks.size();
            ArrayList<ActivityManager.RecentTaskInfo> res
                    = new ArrayList<ActivityManager.RecentTaskInfo>(
                            maxNum < N ? maxNum : N);
            for (int i=0; i<N && maxNum > 0; i++) {
                TaskRecord tr = mRecentTasks.get(i);
                // Only add calling user's recent tasks
                if (tr.userId != userId) continue;
                // Return the entry if desired by the caller.  We always return
                // the first entry, because callers always expect this to be the
                // foreground app.  We may filter others if the caller has
                // not supplied RECENT_WITH_EXCLUDED and there is some reason
                // we should exclude the entry.

                if (i == 0
                        || ((flags&ActivityManager.RECENT_WITH_EXCLUDED) != 0)
                        || (tr.intent == null)
                        || ((tr.intent.getFlags()
                                &Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS) == 0)) {
                    ActivityManager.RecentTaskInfo rti
                            = new ActivityManager.RecentTaskInfo();
                    rti.id = tr.numActivities > 0 ? tr.taskId : -1;
                    rti.persistentId = tr.taskId;
                    rti.baseIntent = new Intent(
                            tr.intent != null ? tr.intent : tr.affinityIntent);
                    if (!detailed) {
                        rti.baseIntent.replaceExtras((Bundle)null);
                    }
                    rti.origActivity = tr.origActivity;
                    rti.description = tr.lastDescription;
                    
                    if ((flags&ActivityManager.RECENT_IGNORE_UNAVAILABLE) != 0) {
                        // Check whether this activity is currently available.
                        try {
                            if (rti.origActivity != null) {
                                if (pm.getActivityInfo(rti.origActivity, 0, userId)
                                        == null) {
                                    continue;
                                }
                            } else if (rti.baseIntent != null) {
                                if (pm.queryIntentActivities(rti.baseIntent,
                                        null, 0, userId) == null) {
                                    continue;
                                }
                            }
                        } catch (RemoteException e) {
                            // Will never happen.
                        }
                    }
                    
                    res.add(rti);
                    maxNum--;
                }
            }
            return res;
        }
    }

    private TaskRecord taskForIdLocked(int id) {
        final int N = mRecentTasks.size();
        for (int i=0; i<N; i++) {
            TaskRecord tr = mRecentTasks.get(i);
            if (tr.taskId == id) {
                return tr;
            }
        }
        return null;
    }

    public ActivityManager.TaskThumbnails getTaskThumbnails(int id) {
        synchronized (this) {
            enforceCallingPermission(android.Manifest.permission.READ_FRAME_BUFFER,
                    "getTaskThumbnails()");
            TaskRecord tr = taskForIdLocked(id);
            if (tr != null) {
                return mMainStack.getTaskThumbnailsLocked(tr);
            }
        }
        return null;
    }

    public Bitmap getTaskTopThumbnail(int id) {
        synchronized (this) {
            enforceCallingPermission(android.Manifest.permission.READ_FRAME_BUFFER,
                    "getTaskTopThumbnail()");
            TaskRecord tr = taskForIdLocked(id);
            if (tr != null) {
                return mMainStack.getTaskTopThumbnailLocked(tr);
            }
        }
        return null;
    }

    public boolean removeSubTask(int taskId, int subTaskIndex) {
        synchronized (this) {
            enforceCallingPermission(android.Manifest.permission.REMOVE_TASKS,
                    "removeSubTask()");
            long ident = Binder.clearCallingIdentity();
            try {
                return mMainStack.removeTaskActivitiesLocked(taskId, subTaskIndex,
                        true) != null;
            } finally {
                Binder.restoreCallingIdentity(ident);
            }
        }
    }

    private void cleanUpRemovedTaskLocked(TaskRecord tr, int flags) {
        final boolean killProcesses = (flags&ActivityManager.REMOVE_TASK_KILL_PROCESS) != 0;
        Intent baseIntent = new Intent(
                tr.intent != null ? tr.intent : tr.affinityIntent);
        ComponentName component = baseIntent.getComponent();
        if (component == null) {
            Slog.w(TAG, "Now component for base intent of task: " + tr);
            return;
        }

        // Find any running services associated with this app.
        mServices.cleanUpRemovedTaskLocked(tr, component, baseIntent);

        if (killProcesses) {
            // Find any running processes associated with this app.
            final String pkg = component.getPackageName();
            ArrayList<ProcessRecord> procs = new ArrayList<ProcessRecord>();
            HashMap<String, SparseArray<ProcessRecord>> pmap = mProcessNames.getMap();
            for (SparseArray<ProcessRecord> uids : pmap.values()) {
                for (int i=0; i<uids.size(); i++) {
                    ProcessRecord proc = uids.valueAt(i);
                    if (proc.userId != tr.userId) {
                        continue;
                    }
                    if (!proc.pkgList.contains(pkg)) {
                        continue;
                    }
                    procs.add(proc);
                }
            }

            // Kill the running processes.
            for (int i=0; i<procs.size(); i++) {
                ProcessRecord pr = procs.get(i);
                if (pr.setSchedGroup == Process.THREAD_GROUP_BG_NONINTERACTIVE) {
                    Slog.i(TAG, "Killing " + pr.toShortString() + ": remove task");
                    EventLog.writeEvent(EventLogTags.AM_KILL, pr.userId, pr.pid,
                            pr.processName, pr.setAdj, "remove task");
                    pr.killedBackground = true;
                    Process.killProcessQuiet(pr.pid);
                } else {
                    pr.waitingToKill = "remove task";
                }
            }
        }
    }

    public boolean removeTask(int taskId, int flags) {
        synchronized (this) {
            enforceCallingPermission(android.Manifest.permission.REMOVE_TASKS,
                    "removeTask()");
            long ident = Binder.clearCallingIdentity();
            try {
                ActivityRecord r = mMainStack.removeTaskActivitiesLocked(taskId, -1,
                        false);
                if (r != null) {
                    mRecentTasks.remove(r.task);
                    cleanUpRemovedTaskLocked(r.task, flags);
                    return true;
                } else {
                    TaskRecord tr = null;
                    int i=0;
                    while (i < mRecentTasks.size()) {
                        TaskRecord t = mRecentTasks.get(i);
                        if (t.taskId == taskId) {
                            tr = t;
                            break;
                        }
                        i++;
                    }
                    if (tr != null) {
                        if (tr.numActivities <= 0) {
                            // Caller is just removing a recent task that is
                            // not actively running.  That is easy!
                            mRecentTasks.remove(i);
                            cleanUpRemovedTaskLocked(tr, flags);
                            return true;
                        } else {
                            Slog.w(TAG, "removeTask: task " + taskId
                                    + " does not have activities to remove, "
                                    + " but numActivities=" + tr.numActivities
                                    + ": " + tr);
                        }
                    }
                }
            } finally {
                Binder.restoreCallingIdentity(ident);
            }
        }
        return false;
    }
    
    private final int findAffinityTaskTopLocked(int startIndex, String affinity) {
        int j;
        TaskRecord startTask = ((ActivityRecord)mMainStack.mHistory.get(startIndex)).task; 
        TaskRecord jt = startTask;
        
        // First look backwards
        for (j=startIndex-1; j>=0; j--) {
            ActivityRecord r = (ActivityRecord)mMainStack.mHistory.get(j);
            if (r.task != jt) {
                jt = r.task;
                if (affinity.equals(jt.affinity)) {
                    return j;
                }
            }
        }
        
        // Now look forwards
        final int N = mMainStack.mHistory.size();
        jt = startTask;
        for (j=startIndex+1; j<N; j++) {
            ActivityRecord r = (ActivityRecord)mMainStack.mHistory.get(j);
            if (r.task != jt) {
                if (affinity.equals(jt.affinity)) {
                    return j;
                }
                jt = r.task;
            }
        }
        
        // Might it be at the top?
        if (affinity.equals(((ActivityRecord)mMainStack.mHistory.get(N-1)).task.affinity)) {
            return N-1;
        }
        
        return -1;
    }
    
    /**
     * TODO: Add mController hook
     */
    public void moveTaskToFront(int task, int flags, Bundle options) {
        enforceCallingPermission(android.Manifest.permission.REORDER_TASKS,
                "moveTaskToFront()");

        synchronized(this) {
            if (!checkAppSwitchAllowedLocked(Binder.getCallingPid(),
                    Binder.getCallingUid(), "Task to front")) {
                ActivityOptions.abort(options);
                return;
            }
            final long origId = Binder.clearCallingIdentity();
            try {
                TaskRecord tr = taskForIdLocked(task);
                if (tr != null) {
                    if ((flags&ActivityManager.MOVE_TASK_NO_USER_ACTION) == 0) {
                        mMainStack.mUserLeaving = true;
                    }
                    if ((flags&ActivityManager.MOVE_TASK_WITH_HOME) != 0) {
                        // Caller wants the home activity moved with it.  To accomplish this,
                        // we'll just move the home task to the top first.
                        mMainStack.moveHomeToFrontLocked();
                    }
                    mMainStack.moveTaskToFrontLocked(tr, null, options);
                    return;
                }
                for (int i=mMainStack.mHistory.size()-1; i>=0; i--) {
                    ActivityRecord hr = (ActivityRecord)mMainStack.mHistory.get(i);
                    if (hr.task.taskId == task) {
                        if ((flags&ActivityManager.MOVE_TASK_NO_USER_ACTION) == 0) {
                            mMainStack.mUserLeaving = true;
                        }
                        if ((flags&ActivityManager.MOVE_TASK_WITH_HOME) != 0) {
                            // Caller wants the home activity moved with it.  To accomplish this,
                            // we'll just move the home task to the top first.
                            mMainStack.moveHomeToFrontLocked();
                        }
                        mMainStack.moveTaskToFrontLocked(hr.task, null, options);
                        return;
                    }
                }
            } finally {
                Binder.restoreCallingIdentity(origId);
            }
            ActivityOptions.abort(options);
        }
    }

    public void moveTaskToBack(int task) {
        enforceCallingPermission(android.Manifest.permission.REORDER_TASKS,
                "moveTaskToBack()");

        synchronized(this) {
            if (mMainStack.mResumedActivity != null
                    && mMainStack.mResumedActivity.task.taskId == task) {
                if (!checkAppSwitchAllowedLocked(Binder.getCallingPid(),
                        Binder.getCallingUid(), "Task to back")) {
                    return;
                }
            }
            final long origId = Binder.clearCallingIdentity();
            mMainStack.moveTaskToBackLocked(task, null);
            Binder.restoreCallingIdentity(origId);
        }
    }

    /**
     * Moves an activity, and all of the other activities within the same task, to the bottom
     * of the history stack.  The activity's order within the task is unchanged.
     * 
     * @param token A reference to the activity we wish to move
     * @param nonRoot If false then this only works if the activity is the root
     *                of a task; if true it will work for any activity in a task.
     * @return Returns true if the move completed, false if not.
     */
    public boolean moveActivityTaskToBack(IBinder token, boolean nonRoot) {
        enforceNotIsolatedCaller("moveActivityTaskToBack");
        synchronized(this) {
            final long origId = Binder.clearCallingIdentity();
            int taskId = getTaskForActivityLocked(token, !nonRoot);
            if (taskId >= 0) {
                return mMainStack.moveTaskToBackLocked(taskId, null);
            }
            Binder.restoreCallingIdentity(origId);
        }
        return false;
    }

    public void moveTaskBackwards(int task) {
        enforceCallingPermission(android.Manifest.permission.REORDER_TASKS,
                "moveTaskBackwards()");

        synchronized(this) {
            if (!checkAppSwitchAllowedLocked(Binder.getCallingPid(),
                    Binder.getCallingUid(), "Task backwards")) {
                return;
            }
            final long origId = Binder.clearCallingIdentity();
            moveTaskBackwardsLocked(task);
            Binder.restoreCallingIdentity(origId);
        }
    }

    private final void moveTaskBackwardsLocked(int task) {
        Slog.e(TAG, "moveTaskBackwards not yet implemented!");
    }

    public int getTaskForActivity(IBinder token, boolean onlyRoot) {
        synchronized(this) {
            return getTaskForActivityLocked(token, onlyRoot);
        }
    }

    int getTaskForActivityLocked(IBinder token, boolean onlyRoot) {
        final int N = mMainStack.mHistory.size();
        TaskRecord lastTask = null;
        for (int i=0; i<N; i++) {
            ActivityRecord r = (ActivityRecord)mMainStack.mHistory.get(i);
            if (r.appToken == token) {
                if (!onlyRoot || lastTask != r.task) {
                    return r.task.taskId;
                }
                return -1;
            }
            lastTask = r.task;
        }

        return -1;
    }

    // =========================================================
    // THUMBNAILS
    // =========================================================

    public void reportThumbnail(IBinder token,
            Bitmap thumbnail, CharSequence description) {
        //System.out.println("Report thumbnail for " + token + ": " + thumbnail);
        final long origId = Binder.clearCallingIdentity();
        sendPendingThumbnail(null, token, thumbnail, description, true);
        Binder.restoreCallingIdentity(origId);
    }

    final void sendPendingThumbnail(ActivityRecord r, IBinder token,
            Bitmap thumbnail, CharSequence description, boolean always) {
        TaskRecord task = null;
        ArrayList receivers = null;

        //System.out.println("Send pending thumbnail: " + r);

        synchronized(this) {
            if (r == null) {
                r = mMainStack.isInStackLocked(token);
                if (r == null) {
                    return;
                }
            }
            if (thumbnail == null && r.thumbHolder != null) {
                thumbnail = r.thumbHolder.lastThumbnail;
                description = r.thumbHolder.lastDescription;
            }
            if (thumbnail == null && !always) {
                // If there is no thumbnail, and this entry is not actually
                // going away, then abort for now and pick up the next
                // thumbnail we get.
                return;
            }
            task = r.task;

            int N = mPendingThumbnails.size();
            int i=0;
            while (i<N) {
                PendingThumbnailsRecord pr =
                    (PendingThumbnailsRecord)mPendingThumbnails.get(i);
                //System.out.println("Looking in " + pr.pendingRecords);
                if (pr.pendingRecords.remove(r)) {
                    if (receivers == null) {
                        receivers = new ArrayList();
                    }
                    receivers.add(pr);
                    if (pr.pendingRecords.size() == 0) {
                        pr.finished = true;
                        mPendingThumbnails.remove(i);
                        N--;
                        continue;
                    }
                }
                i++;
            }
        }

        if (receivers != null) {
            final int N = receivers.size();
            for (int i=0; i<N; i++) {
                try {
                    PendingThumbnailsRecord pr =
                        (PendingThumbnailsRecord)receivers.get(i);
                    pr.receiver.newThumbnail(
                        task != null ? task.taskId : -1, thumbnail, description);
                    if (pr.finished) {
                        pr.receiver.finished();
                    }
                } catch (Exception e) {
                    Slog.w(TAG, "Exception thrown when sending thumbnail", e);
                }
            }
        }
    }

    // =========================================================
    // CONTENT PROVIDERS
    // =========================================================

    private final List<ProviderInfo> generateApplicationProvidersLocked(ProcessRecord app) {
        List<ProviderInfo> providers = null;
        try {
            providers = AppGlobals.getPackageManager().
                queryContentProviders(app.processName, app.uid,
                        STOCK_PM_FLAGS | PackageManager.GET_URI_PERMISSION_PATTERNS);
        } catch (RemoteException ex) {
        }
        if (DEBUG_MU)
            Slog.v(TAG_MU, "generateApplicationProvidersLocked, app.info.uid = " + app.uid);
        int userId = app.userId;
        if (providers != null) {
            int N = providers.size();
            for (int i=0; i<N; i++) {
                ProviderInfo cpi =
                    (ProviderInfo)providers.get(i);
                boolean singleton = isSingleton(cpi.processName, cpi.applicationInfo,
                        cpi.name, cpi.flags);
                if (singleton && UserHandle.getUserId(app.uid) != 0) {
                    // This is a singleton provider, but a user besides the
                    // default user is asking to initialize a process it runs
                    // in...  well, no, it doesn't actually run in this process,
                    // it runs in the process of the default user.  Get rid of it.
                    providers.remove(i);
                    N--;
                    continue;
                }

                ComponentName comp = new ComponentName(cpi.packageName, cpi.name);
                ContentProviderRecord cpr = mProviderMap.getProviderByClass(comp, userId);
                if (cpr == null) {
                    cpr = new ContentProviderRecord(this, cpi, app.info, comp, singleton);
                    mProviderMap.putProviderByClass(comp, cpr);
                }
                if (DEBUG_MU)
                    Slog.v(TAG_MU, "generateApplicationProvidersLocked, cpi.uid = " + cpr.uid);
                app.pubProviders.put(cpi.name, cpr);
                app.addPackage(cpi.applicationInfo.packageName);
                ensurePackageDexOpt(cpi.applicationInfo.packageName);
            }
        }
        return providers;
    }

    /**
     * Check if {@link ProcessRecord} has a possible chance at accessing the
     * given {@link ProviderInfo}. Final permission checking is always done
     * in {@link ContentProvider}.
     */
    private final String checkContentProviderPermissionLocked(
            ProviderInfo cpi, ProcessRecord r) {
        final int callingPid = (r != null) ? r.pid : Binder.getCallingPid();
        final int callingUid = (r != null) ? r.uid : Binder.getCallingUid();
        if (checkComponentPermission(cpi.readPermission, callingPid, callingUid,
                cpi.applicationInfo.uid, cpi.exported)
                == PackageManager.PERMISSION_GRANTED) {
            return null;
        }
        if (checkComponentPermission(cpi.writePermission, callingPid, callingUid,
                cpi.applicationInfo.uid, cpi.exported)
                == PackageManager.PERMISSION_GRANTED) {
            return null;
        }
        
        PathPermission[] pps = cpi.pathPermissions;
        if (pps != null) {
            int i = pps.length;
            while (i > 0) {
                i--;
                PathPermission pp = pps[i];
                if (checkComponentPermission(pp.getReadPermission(), callingPid, callingUid,
                        cpi.applicationInfo.uid, cpi.exported)
                        == PackageManager.PERMISSION_GRANTED) {
                    return null;
                }
                if (checkComponentPermission(pp.getWritePermission(), callingPid, callingUid,
                        cpi.applicationInfo.uid, cpi.exported)
                        == PackageManager.PERMISSION_GRANTED) {
                    return null;
                }
            }
        }
        
        HashMap<Uri, UriPermission> perms = mGrantedUriPermissions.get(callingUid);
        if (perms != null) {
            for (Map.Entry<Uri, UriPermission> uri : perms.entrySet()) {
                if (uri.getKey().getAuthority().equals(cpi.authority)) {
                    return null;
                }
            }
        }

        String msg;
        if (!cpi.exported) {
            msg = "Permission Denial: opening provider " + cpi.name
                    + " from " + (r != null ? r : "(null)") + " (pid=" + callingPid
                    + ", uid=" + callingUid + ") that is not exported from uid "
                    + cpi.applicationInfo.uid;
        } else {
            msg = "Permission Denial: opening provider " + cpi.name
                    + " from " + (r != null ? r : "(null)") + " (pid=" + callingPid
                    + ", uid=" + callingUid + ") requires "
                    + cpi.readPermission + " or " + cpi.writePermission;
        }
        Slog.w(TAG, msg);
        return msg;
    }

    ContentProviderConnection incProviderCountLocked(ProcessRecord r,
            final ContentProviderRecord cpr, IBinder externalProcessToken, boolean stable) {
        if (r != null) {
            for (int i=0; i<r.conProviders.size(); i++) {
                ContentProviderConnection conn = r.conProviders.get(i);
                if (conn.provider == cpr) {
                    if (DEBUG_PROVIDER) Slog.v(TAG,
                            "Adding provider requested by "
                            + r.processName + " from process "
                            + cpr.info.processName + ": " + cpr.name.flattenToShortString()
                            + " scnt=" + conn.stableCount + " uscnt=" + conn.unstableCount);
                    if (stable) {
                        conn.stableCount++;
                        conn.numStableIncs++;
                    } else {
                        conn.unstableCount++;
                        conn.numUnstableIncs++;
                    }
                    return conn;
                }
            }
            ContentProviderConnection conn = new ContentProviderConnection(cpr, r);
            if (stable) {
                conn.stableCount = 1;
                conn.numStableIncs = 1;
            } else {
                conn.unstableCount = 1;
                conn.numUnstableIncs = 1;
            }
            cpr.connections.add(conn);
            r.conProviders.add(conn);
            return conn;
        }
        cpr.addExternalProcessHandleLocked(externalProcessToken);
        return null;
    }

    boolean decProviderCountLocked(ContentProviderConnection conn,
            ContentProviderRecord cpr, IBinder externalProcessToken, boolean stable) {
        if (conn != null) {
            cpr = conn.provider;
            if (DEBUG_PROVIDER) Slog.v(TAG,
                    "Removing provider requested by "
                    + conn.client.processName + " from process "
                    + cpr.info.processName + ": " + cpr.name.flattenToShortString()
                    + " scnt=" + conn.stableCount + " uscnt=" + conn.unstableCount);
            if (stable) {
                conn.stableCount--;
            } else {
                conn.unstableCount--;
            }
            if (conn.stableCount == 0 && conn.unstableCount == 0) {
                cpr.connections.remove(conn);
                conn.client.conProviders.remove(conn);
                return true;
            }
            return false;
        }
        cpr.removeExternalProcessHandleLocked(externalProcessToken);
        return false;
    }

    private final ContentProviderHolder getContentProviderImpl(IApplicationThread caller,
            String name, IBinder token, boolean stable, int userId) {
        ContentProviderRecord cpr;
        ContentProviderConnection conn = null;
        ProviderInfo cpi = null;

        synchronized(this) {
            ProcessRecord r = null;
            if (caller != null) {
                r = getRecordForAppLocked(caller);
                if (r == null) {
                    throw new SecurityException(
                            "Unable to find app for caller " + caller
                          + " (pid=" + Binder.getCallingPid()
                          + ") when getting content provider " + name);
                }
            }

            // First check if this content provider has been published...
            cpr = mProviderMap.getProviderByName(name, userId);
            boolean providerRunning = cpr != null;
            if (providerRunning) {
                cpi = cpr.info;
                String msg;
                if ((msg=checkContentProviderPermissionLocked(cpi, r)) != null) {
                    throw new SecurityException(msg);
                }

                if (r != null && cpr.canRunHere(r)) {
                    // This provider has been published or is in the process
                    // of being published...  but it is also allowed to run
                    // in the caller's process, so don't make a connection
                    // and just let the caller instantiate its own instance.
                    ContentProviderHolder holder = cpr.newHolder(null);
                    // don't give caller the provider object, it needs
                    // to make its own.
                    holder.provider = null;
                    return holder;
                }

                final long origId = Binder.clearCallingIdentity();

                // In this case the provider instance already exists, so we can
                // return it right away.
                conn = incProviderCountLocked(r, cpr, token, stable);
                if (conn != null && (conn.stableCount+conn.unstableCount) == 1) {
                    if (cpr.proc != null && r.setAdj <= ProcessList.PERCEPTIBLE_APP_ADJ) {
                        // If this is a perceptible app accessing the provider,
                        // make sure to count it as being accessed and thus
                        // back up on the LRU list.  This is good because
                        // content providers are often expensive to start.
                        updateLruProcessLocked(cpr.proc, false);
                    }
                }

                if (cpr.proc != null) {
                    if (false) {
                        if (cpr.name.flattenToShortString().equals(
                                "com.android.providers.calendar/.CalendarProvider2")) {
                            Slog.v(TAG, "****************** KILLING "
                                + cpr.name.flattenToShortString());
                            Process.killProcess(cpr.proc.pid);
                        }
                    }
                    boolean success = updateOomAdjLocked(cpr.proc);
                    if (DEBUG_PROVIDER) Slog.i(TAG, "Adjust success: " + success);
                    // NOTE: there is still a race here where a signal could be
                    // pending on the process even though we managed to update its
                    // adj level.  Not sure what to do about this, but at least
                    // the race is now smaller.
                    if (!success) {
                        // Uh oh...  it looks like the provider's process
                        // has been killed on us.  We need to wait for a new
                        // process to be started, and make sure its death
                        // doesn't kill our process.
                        Slog.i(TAG,
                                "Existing provider " + cpr.name.flattenToShortString()
                                + " is crashing; detaching " + r);
                        boolean lastRef = decProviderCountLocked(conn, cpr, token, stable);
                        appDiedLocked(cpr.proc, cpr.proc.pid, cpr.proc.thread);
                        if (!lastRef) {
                            // This wasn't the last ref our process had on
                            // the provider...  we have now been killed, bail.
                            return null;
                        }
                        providerRunning = false;
                        conn = null;
                    }
                }

                Binder.restoreCallingIdentity(origId);
            }

            boolean singleton;
            if (!providerRunning) {
                try {
                    cpi = AppGlobals.getPackageManager().
                        resolveContentProvider(name,
                            STOCK_PM_FLAGS | PackageManager.GET_URI_PERMISSION_PATTERNS, userId);
                } catch (RemoteException ex) {
                }
                if (cpi == null) {
                    return null;
                }
                singleton = isSingleton(cpi.processName, cpi.applicationInfo,
                        cpi.name, cpi.flags); 
                if (singleton) {
                    userId = 0;
                }
                cpi.applicationInfo = getAppInfoForUser(cpi.applicationInfo, userId);

                String msg;
                if ((msg=checkContentProviderPermissionLocked(cpi, r)) != null) {
                    throw new SecurityException(msg);
                }

                if (!mProcessesReady && !mDidUpdate && !mWaitingUpdate
                        && !cpi.processName.equals("system")) {
                    // If this content provider does not run in the system
                    // process, and the system is not yet ready to run other
                    // processes, then fail fast instead of hanging.
                    throw new IllegalArgumentException(
                            "Attempt to launch content provider before system ready");
                }

                // Make sure that the user who owns this provider is started.  If not,
                // we don't want to allow it to run.
                if (mStartedUsers.get(userId) == null) {
                    Slog.w(TAG, "Unable to launch app "
                            + cpi.applicationInfo.packageName + "/"
                            + cpi.applicationInfo.uid + " for provider "
                            + name + ": user " + userId + " is stopped");
                    return null;
                }

                ComponentName comp = new ComponentName(cpi.packageName, cpi.name);
                cpr = mProviderMap.getProviderByClass(comp, userId);
                final boolean firstClass = cpr == null;
                if (firstClass) {
                    try {
                        ApplicationInfo ai =
                            AppGlobals.getPackageManager().
                                getApplicationInfo(
                                        cpi.applicationInfo.packageName,
                                        STOCK_PM_FLAGS, userId);
                        if (ai == null) {
                            Slog.w(TAG, "No package info for content provider "
                                    + cpi.name);
                            return null;
                        }
                        ai = getAppInfoForUser(ai, userId);
                        cpr = new ContentProviderRecord(this, cpi, ai, comp, singleton);
                    } catch (RemoteException ex) {
                        // pm is in same process, this will never happen.
                    }
                }

                if (r != null && cpr.canRunHere(r)) {
                    // If this is a multiprocess provider, then just return its
                    // info and allow the caller to instantiate it.  Only do
                    // this if the provider is the same user as the caller's
                    // process, or can run as root (so can be in any process).
                    return cpr.newHolder(null);
                }

                if (DEBUG_PROVIDER) {
                    RuntimeException e = new RuntimeException("here");
                    Slog.w(TAG, "LAUNCHING REMOTE PROVIDER (myuid " + r.uid
                          + " pruid " + cpr.appInfo.uid + "): " + cpr.info.name, e);
                }

                // This is single process, and our app is now connecting to it.
                // See if we are already in the process of launching this
                // provider.
                final int N = mLaunchingProviders.size();
                int i;
                for (i=0; i<N; i++) {
                    if (mLaunchingProviders.get(i) == cpr) {
                        break;
                    }
                }

                // If the provider is not already being launched, then get it
                // started.
                if (i >= N) {
                    final long origId = Binder.clearCallingIdentity();

                    try {
                        // Content provider is now in use, its package can't be stopped.
                        try {
                            AppGlobals.getPackageManager().setPackageStoppedState(
                                    cpr.appInfo.packageName, false, userId);
                        } catch (RemoteException e) {
                        } catch (IllegalArgumentException e) {
                            Slog.w(TAG, "Failed trying to unstop package "
                                    + cpr.appInfo.packageName + ": " + e);
                        }

                        ProcessRecord proc = startProcessLocked(cpi.processName,
                                cpr.appInfo, false, 0, "content provider",
                                new ComponentName(cpi.applicationInfo.packageName,
                                        cpi.name), false, false);
                        if (proc == null) {
                            Slog.w(TAG, "Unable to launch app "
                                    + cpi.applicationInfo.packageName + "/"
                                    + cpi.applicationInfo.uid + " for provider "
                                    + name + ": process is bad");
                            return null;
                        }
                        cpr.launchingApp = proc;
                        mLaunchingProviders.add(cpr);
                    } finally {
                        Binder.restoreCallingIdentity(origId);
                    }
                }

                // Make sure the provider is published (the same provider class
                // may be published under multiple names).
                if (firstClass) {
                    mProviderMap.putProviderByClass(comp, cpr);
                }

                mProviderMap.putProviderByName(name, cpr);
                conn = incProviderCountLocked(r, cpr, token, stable);
                if (conn != null) {
                    conn.waiting = true;
                }
            }
        }

        // Wait for the provider to be published...
        synchronized (cpr) {
            while (cpr.provider == null) {
                if (cpr.launchingApp == null) {
                    Slog.w(TAG, "Unable to launch app "
                            + cpi.applicationInfo.packageName + "/"
                            + cpi.applicationInfo.uid + " for provider "
                            + name + ": launching app became null");
                    EventLog.writeEvent(EventLogTags.AM_PROVIDER_LOST_PROCESS,
                            UserHandle.getUserId(cpi.applicationInfo.uid),
                            cpi.applicationInfo.packageName,
                            cpi.applicationInfo.uid, name);
                    return null;
                }
                try {
                    if (DEBUG_MU) {
                        Slog.v(TAG_MU, "Waiting to start provider " + cpr + " launchingApp="
                                + cpr.launchingApp);
                    }
                    if (conn != null) {
                        conn.waiting = true;
                    }
                    cpr.wait();
                } catch (InterruptedException ex) {
                } finally {
                    if (conn != null) {
                        conn.waiting = false;
                    }
                }
            }
        }
        return cpr != null ? cpr.newHolder(conn) : null;
    }

    public final ContentProviderHolder getContentProvider(
            IApplicationThread caller, String name, int userId, boolean stable) {
        enforceNotIsolatedCaller("getContentProvider");
        if (caller == null) {
            String msg = "null IApplicationThread when getting content provider "
                    + name;
            Slog.w(TAG, msg);
            throw new SecurityException(msg);
        }

        userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), userId,
                false, true, "getContentProvider", null);
        return getContentProviderImpl(caller, name, null, stable, userId);
    }

    public ContentProviderHolder getContentProviderExternal(
            String name, int userId, IBinder token) {
        enforceCallingPermission(android.Manifest.permission.ACCESS_CONTENT_PROVIDERS_EXTERNALLY,
            "Do not have permission in call getContentProviderExternal()");
        userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), userId,
                false, true, "getContentProvider", null);
        return getContentProviderExternalUnchecked(name, token, userId);
    }

    private ContentProviderHolder getContentProviderExternalUnchecked(String name,
            IBinder token, int userId) {
        return getContentProviderImpl(null, name, token, true, userId);
    }

    /**
     * Drop a content provider from a ProcessRecord's bookkeeping
     */
    public void removeContentProvider(IBinder connection, boolean stable) {
        enforceNotIsolatedCaller("removeContentProvider");
        synchronized (this) {
            ContentProviderConnection conn;
            try {
                conn = (ContentProviderConnection)connection;
            } catch (ClassCastException e) {
                String msg ="removeContentProvider: " + connection
                        + " not a ContentProviderConnection";
                Slog.w(TAG, msg);
                throw new IllegalArgumentException(msg);
            }
            if (conn == null) {
                throw new NullPointerException("connection is null");
            }
            if (decProviderCountLocked(conn, null, null, stable)) {
                updateOomAdjLocked();
            }
        }
    }

    public void removeContentProviderExternal(String name, IBinder token) {
        enforceCallingPermission(android.Manifest.permission.ACCESS_CONTENT_PROVIDERS_EXTERNALLY,
            "Do not have permission in call removeContentProviderExternal()");
        removeContentProviderExternalUnchecked(name, token, UserHandle.getCallingUserId());
    }

    private void removeContentProviderExternalUnchecked(String name, IBinder token, int userId) {
        synchronized (this) {
            ContentProviderRecord cpr = mProviderMap.getProviderByName(name, userId);
            if(cpr == null) {
                //remove from mProvidersByClass
                if(localLOGV) Slog.v(TAG, name+" content provider not found in providers list");
                return;
            }

            //update content provider record entry info
            ComponentName comp = new ComponentName(cpr.info.packageName, cpr.info.name);
            ContentProviderRecord localCpr = mProviderMap.getProviderByClass(comp, userId);
            if (localCpr.hasExternalProcessHandles()) {
                if (localCpr.removeExternalProcessHandleLocked(token)) {
                    updateOomAdjLocked();
                } else {
                    Slog.e(TAG, "Attmpt to remove content provider " + localCpr
                            + " with no external reference for token: "
                            + token + ".");
                }
            } else {
                Slog.e(TAG, "Attmpt to remove content provider: " + localCpr
                        + " with no external references.");
            }
        }
    }
    
    public final void publishContentProviders(IApplicationThread caller,
            List<ContentProviderHolder> providers) {
        if (providers == null) {
            return;
        }

        enforceNotIsolatedCaller("publishContentProviders");
        synchronized (this) {
            final ProcessRecord r = getRecordForAppLocked(caller);
            if (DEBUG_MU)
                Slog.v(TAG_MU, "ProcessRecord uid = " + r.uid);
            if (r == null) {
                throw new SecurityException(
                        "Unable to find app for caller " + caller
                      + " (pid=" + Binder.getCallingPid()
                      + ") when publishing content providers");
            }

            final long origId = Binder.clearCallingIdentity();

            final int N = providers.size();
            for (int i=0; i<N; i++) {
                ContentProviderHolder src = providers.get(i);
                if (src == null || src.info == null || src.provider == null) {
                    continue;
                }
                ContentProviderRecord dst = r.pubProviders.get(src.info.name);
                if (DEBUG_MU)
                    Slog.v(TAG_MU, "ContentProviderRecord uid = " + dst.uid);
                if (dst != null) {
                    ComponentName comp = new ComponentName(dst.info.packageName, dst.info.name);
                    mProviderMap.putProviderByClass(comp, dst);
                    String names[] = dst.info.authority.split(";");
                    for (int j = 0; j < names.length; j++) {
                        mProviderMap.putProviderByName(names[j], dst);
                    }

                    int NL = mLaunchingProviders.size();
                    int j;
                    for (j=0; j<NL; j++) {
                        if (mLaunchingProviders.get(j) == dst) {
                            mLaunchingProviders.remove(j);
                            j--;
                            NL--;
                        }
                    }
                    synchronized (dst) {
                        dst.provider = src.provider;
                        dst.proc = r;
                        dst.notifyAll();
                    }
                    updateOomAdjLocked(r);
                }
            }

            Binder.restoreCallingIdentity(origId);
        }
    }

    public boolean refContentProvider(IBinder connection, int stable, int unstable) {
        ContentProviderConnection conn;
        try {
            conn = (ContentProviderConnection)connection;
        } catch (ClassCastException e) {
            String msg ="refContentProvider: " + connection
                    + " not a ContentProviderConnection";
            Slog.w(TAG, msg);
            throw new IllegalArgumentException(msg);
        }
        if (conn == null) {
            throw new NullPointerException("connection is null");
        }

        synchronized (this) {
            if (stable > 0) {
                conn.numStableIncs += stable;
            }
            stable = conn.stableCount + stable;
            if (stable < 0) {
                throw new IllegalStateException("stableCount < 0: " + stable);
            }

            if (unstable > 0) {
                conn.numUnstableIncs += unstable;
            }
            unstable = conn.unstableCount + unstable;
            if (unstable < 0) {
                throw new IllegalStateException("unstableCount < 0: " + unstable);
            }

            if ((stable+unstable) <= 0) {
                throw new IllegalStateException("ref counts can't go to zero here: stable="
                        + stable + " unstable=" + unstable);
            }
            conn.stableCount = stable;
            conn.unstableCount = unstable;
            return !conn.dead;
        }
    }

    public void unstableProviderDied(IBinder connection) {
        ContentProviderConnection conn;
        try {
            conn = (ContentProviderConnection)connection;
        } catch (ClassCastException e) {
            String msg ="refContentProvider: " + connection
                    + " not a ContentProviderConnection";
            Slog.w(TAG, msg);
            throw new IllegalArgumentException(msg);
        }
        if (conn == null) {
            throw new NullPointerException("connection is null");
        }

        // Safely retrieve the content provider associated with the connection.
        IContentProvider provider;
        synchronized (this) {
            provider = conn.provider.provider;
        }

        if (provider == null) {
            // Um, yeah, we're way ahead of you.
            return;
        }

        // Make sure the caller is being honest with us.
        if (provider.asBinder().pingBinder()) {
            // Er, no, still looks good to us.
            synchronized (this) {
                Slog.w(TAG, "unstableProviderDied: caller " + Binder.getCallingUid()
                        + " says " + conn + " died, but we don't agree");
                return;
            }
        }

        // Well look at that!  It's dead!
        synchronized (this) {
            if (conn.provider.provider != provider) {
                // But something changed...  good enough.
                return;
            }

            ProcessRecord proc = conn.provider.proc;
            if (proc == null || proc.thread == null) {
                // Seems like the process is already cleaned up.
                return;
            }

            // As far as we're concerned, this is just like receiving a
            // death notification...  just a bit prematurely.
            Slog.i(TAG, "Process " + proc.processName + " (pid " + proc.pid
                    + ") early provider death");
            final long ident = Binder.clearCallingIdentity();
            try {
                appDiedLocked(proc, proc.pid, proc.thread);
            } finally {
                Binder.restoreCallingIdentity(ident);
            }
        }
    }

    public static final void installSystemProviders() {
        List<ProviderInfo> providers;
        synchronized (mSelf) {
            ProcessRecord app = mSelf.mProcessNames.get("system", Process.SYSTEM_UID);
            providers = mSelf.generateApplicationProvidersLocked(app);
            if (providers != null) {
                for (int i=providers.size()-1; i>=0; i--) {
                    ProviderInfo pi = (ProviderInfo)providers.get(i);
                    if ((pi.applicationInfo.flags&ApplicationInfo.FLAG_SYSTEM) == 0) {
                        Slog.w(TAG, "Not installing system proc provider " + pi.name
                                + ": not system .apk");
                        providers.remove(i);
                    }
                }
            }
        }
        if (providers != null) {
            mSystemThread.installSystemProviders(providers);
        }

        mSelf.mCoreSettingsObserver = new CoreSettingsObserver(mSelf);

        mSelf.mUsageStatsService.monitorPackages();
    }

    /**
     * Allows app to retrieve the MIME type of a URI without having permission
     * to access its content provider.
     *
     * CTS tests for this functionality can be run with "runtest cts-appsecurity".
     *
     * Test cases are at cts/tests/appsecurity-tests/test-apps/UsePermissionDiffCert/
     *     src/com/android/cts/usespermissiondiffcertapp/AccessPermissionWithDiffSigTest.java
     */
    public String getProviderMimeType(Uri uri, int userId) {
        enforceNotIsolatedCaller("getProviderMimeType");
        userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(),
                userId, false, true, "getProviderMimeType", null);
        final String name = uri.getAuthority();
        final long ident = Binder.clearCallingIdentity();
        ContentProviderHolder holder = null;

        try {
            holder = getContentProviderExternalUnchecked(name, null, userId);
            if (holder != null) {
                return holder.provider.getType(uri);
            }
        } catch (RemoteException e) {
            Log.w(TAG, "Content provider dead retrieving " + uri, e);
            return null;
        } finally {
            if (holder != null) {
                removeContentProviderExternalUnchecked(name, null, userId);
            }
            Binder.restoreCallingIdentity(ident);
        }

        return null;
    }

    // =========================================================
    // GLOBAL MANAGEMENT
    // =========================================================

    final ProcessRecord newProcessRecordLocked(IApplicationThread thread,
            ApplicationInfo info, String customProcess, boolean isolated) {
        String proc = customProcess != null ? customProcess : info.processName;
        BatteryStatsImpl.Uid.Proc ps = null;
        BatteryStatsImpl stats = mBatteryStatsService.getActiveStatistics();
        int uid = info.uid;
        if (isolated) {
            int userId = UserHandle.getUserId(uid);
            int stepsLeft = Process.LAST_ISOLATED_UID - Process.FIRST_ISOLATED_UID + 1;
            uid = 0;
            while (true) {
                if (mNextIsolatedProcessUid < Process.FIRST_ISOLATED_UID
                        || mNextIsolatedProcessUid > Process.LAST_ISOLATED_UID) {
                    mNextIsolatedProcessUid = Process.FIRST_ISOLATED_UID;
                }
                uid = UserHandle.getUid(userId, mNextIsolatedProcessUid);
                mNextIsolatedProcessUid++;
                if (mIsolatedProcesses.indexOfKey(uid) < 0) {
                    // No process for this uid, use it.
                    break;
                }
                stepsLeft--;
                if (stepsLeft <= 0) {
                    return null;
                }
            }
        }
        synchronized (stats) {
            ps = stats.getProcessStatsLocked(info.uid, proc);
        }
        return new ProcessRecord(ps, thread, info, proc, uid);
    }

    final ProcessRecord addAppLocked(ApplicationInfo info, boolean isolated) {
        ProcessRecord app;
        if (!isolated) {
            app = getProcessRecordLocked(info.processName, info.uid);
        } else {
            app = null;
        }

        if (app == null) {
            app = newProcessRecordLocked(null, info, null, isolated);
            mProcessNames.put(info.processName, app.uid, app);
            if (isolated) {
                mIsolatedProcesses.put(app.uid, app);
            }
            updateLruProcessLocked(app, true);
        }

        // This package really, really can not be stopped.
        try {
            AppGlobals.getPackageManager().setPackageStoppedState(
                    info.packageName, false, UserHandle.getUserId(app.uid));
        } catch (RemoteException e) {
        } catch (IllegalArgumentException e) {
            Slog.w(TAG, "Failed trying to unstop package "
                    + info.packageName + ": " + e);
        }

        if ((info.flags&(ApplicationInfo.FLAG_SYSTEM|ApplicationInfo.FLAG_PERSISTENT))
                == (ApplicationInfo.FLAG_SYSTEM|ApplicationInfo.FLAG_PERSISTENT)) {
            app.persistent = true;
            app.maxAdj = ProcessList.PERSISTENT_PROC_ADJ;
        }
        if (app.thread == null && mPersistentStartingProcesses.indexOf(app) < 0) {
            mPersistentStartingProcesses.add(app);
            startProcessLocked(app, "added application", app.processName);
        }

        return app;
    }

    public void unhandledBack() {
        enforceCallingPermission(android.Manifest.permission.FORCE_BACK,
                "unhandledBack()");

        synchronized(this) {
            int count = mMainStack.mHistory.size();
            if (DEBUG_SWITCH) Slog.d(
                TAG, "Performing unhandledBack(): stack size = " + count);
            if (count > 1) {
                final long origId = Binder.clearCallingIdentity();
                mMainStack.finishActivityLocked((ActivityRecord)mMainStack.mHistory.get(count-1),
                        count-1, Activity.RESULT_CANCELED, null, "unhandled-back", true);
                Binder.restoreCallingIdentity(origId);
            }
        }
    }

    public ParcelFileDescriptor openContentUri(Uri uri) throws RemoteException {
        enforceNotIsolatedCaller("openContentUri");
        final int userId = UserHandle.getCallingUserId();
        String name = uri.getAuthority();
        ContentProviderHolder cph = getContentProviderExternalUnchecked(name, null, userId);
        ParcelFileDescriptor pfd = null;
        if (cph != null) {
            // We record the binder invoker's uid in thread-local storage before
            // going to the content provider to open the file.  Later, in the code
            // that handles all permissions checks, we look for this uid and use
            // that rather than the Activity Manager's own uid.  The effect is that
            // we do the check against the caller's permissions even though it looks
            // to the content provider like the Activity Manager itself is making
            // the request.
            sCallerIdentity.set(new Identity(
                    Binder.getCallingPid(), Binder.getCallingUid()));
            try {
                pfd = cph.provider.openFile(null, uri, "r");
            } catch (FileNotFoundException e) {
                // do nothing; pfd will be returned null
            } finally {
                // Ensure that whatever happens, we clean up the identity state
                sCallerIdentity.remove();
            }

            // We've got the fd now, so we're done with the provider.
            removeContentProviderExternalUnchecked(name, null, userId);
        } else {
            Slog.d(TAG, "Failed to get provider for authority '" + name + "'");
        }
        return pfd;
    }

    // Actually is sleeping or shutting down or whatever else in the future
    // is an inactive state.
    public boolean isSleeping() {
        return mSleeping || mShuttingDown;
    }

    public void goingToSleep() {
        if (checkCallingPermission(android.Manifest.permission.DEVICE_POWER)
                != PackageManager.PERMISSION_GRANTED) {
            throw new SecurityException("Requires permission "
                    + android.Manifest.permission.DEVICE_POWER);
        }

        synchronized(this) {
            mWentToSleep = true;
            updateEventDispatchingLocked();

            if (!mSleeping) {
                mSleeping = true;
                mMainStack.stopIfSleepingLocked();

                // Initialize the wake times of all processes.
                checkExcessivePowerUsageLocked(false);
                mHandler.removeMessages(CHECK_EXCESSIVE_WAKE_LOCKS_MSG);
                Message nmsg = mHandler.obtainMessage(CHECK_EXCESSIVE_WAKE_LOCKS_MSG);
                mHandler.sendMessageDelayed(nmsg, POWER_CHECK_DELAY);
            }
        }
    }

    public boolean shutdown(int timeout) {
        if (checkCallingPermission(android.Manifest.permission.SHUTDOWN)
                != PackageManager.PERMISSION_GRANTED) {
            throw new SecurityException("Requires permission "
                    + android.Manifest.permission.SHUTDOWN);
        }
        
        boolean timedout = false;
        
        synchronized(this) {
            mShuttingDown = true;
            updateEventDispatchingLocked();

            if (mMainStack.mResumedActivity != null) {
                mMainStack.stopIfSleepingLocked();
                final long endTime = System.currentTimeMillis() + timeout;
                while (mMainStack.mResumedActivity != null
                        || mMainStack.mPausingActivity != null) {
                    long delay = endTime - System.currentTimeMillis();
                    if (delay <= 0) {
                        Slog.w(TAG, "Activity manager shutdown timed out");
                        timedout = true;
                        break;
                    }
                    try {
                        this.wait();
                    } catch (InterruptedException e) {
                    }
                }
            }
        }

        mAppOpsService.shutdown();
        mUsageStatsService.shutdown();
        mBatteryStatsService.shutdown();
        
        return timedout;
    }
    
    public final void activitySlept(IBinder token) {
        if (localLOGV) Slog.v(
            TAG, "Activity slept: token=" + token);

        ActivityRecord r = null;

        final long origId = Binder.clearCallingIdentity();

        synchronized (this) {
            r = mMainStack.isInStackLocked(token);
            if (r != null) {
                mMainStack.activitySleptLocked(r);
            }
        }

        Binder.restoreCallingIdentity(origId);
    }

    private void comeOutOfSleepIfNeededLocked() {
        if (!mWentToSleep && !mLockScreenShown) {
            if (mSleeping) {
                mSleeping = false;
                mMainStack.awakeFromSleepingLocked();
                mMainStack.resumeTopActivityLocked(null);
            }
        }
    }

    public void wakingUp() {
        if (checkCallingPermission(android.Manifest.permission.DEVICE_POWER)
                != PackageManager.PERMISSION_GRANTED) {
            throw new SecurityException("Requires permission "
                    + android.Manifest.permission.DEVICE_POWER);
        }

        synchronized(this) {
            mWentToSleep = false;
            updateEventDispatchingLocked();
            comeOutOfSleepIfNeededLocked();
        }
    }

    private void updateEventDispatchingLocked() {
        mWindowManager.setEventDispatching(mBooted && !mWentToSleep && !mShuttingDown);
    }

    public void setLockScreenShown(boolean shown) {
        if (checkCallingPermission(android.Manifest.permission.DEVICE_POWER)
                != PackageManager.PERMISSION_GRANTED) {
            throw new SecurityException("Requires permission "
                    + android.Manifest.permission.DEVICE_POWER);
        }

        synchronized(this) {
            mLockScreenShown = shown;
            comeOutOfSleepIfNeededLocked();
        }
    }

    public void stopAppSwitches() {
        if (checkCallingPermission(android.Manifest.permission.STOP_APP_SWITCHES)
                != PackageManager.PERMISSION_GRANTED) {
            throw new SecurityException("Requires permission "
                    + android.Manifest.permission.STOP_APP_SWITCHES);
        }
        
        synchronized(this) {
            mAppSwitchesAllowedTime = SystemClock.uptimeMillis()
                    + APP_SWITCH_DELAY_TIME;
            mDidAppSwitch = false;
            mHandler.removeMessages(DO_PENDING_ACTIVITY_LAUNCHES_MSG);
            Message msg = mHandler.obtainMessage(DO_PENDING_ACTIVITY_LAUNCHES_MSG);
            mHandler.sendMessageDelayed(msg, APP_SWITCH_DELAY_TIME);
        }
    }
    
    public void resumeAppSwitches() {
        if (checkCallingPermission(android.Manifest.permission.STOP_APP_SWITCHES)
                != PackageManager.PERMISSION_GRANTED) {
            throw new SecurityException("Requires permission "
                    + android.Manifest.permission.STOP_APP_SWITCHES);
        }
        
        synchronized(this) {
            // Note that we don't execute any pending app switches... we will
            // let those wait until either the timeout, or the next start
            // activity request.
            mAppSwitchesAllowedTime = 0;
        }
    }
    
    boolean checkAppSwitchAllowedLocked(int callingPid, int callingUid,
            String name) {
        if (mAppSwitchesAllowedTime < SystemClock.uptimeMillis()) {
            return true;
        }
            
        final int perm = checkComponentPermission(
                android.Manifest.permission.STOP_APP_SWITCHES, callingPid,
                callingUid, -1, true);
        if (perm == PackageManager.PERMISSION_GRANTED) {
            return true;
        }
        
        Slog.w(TAG, name + " request from " + callingUid + " stopped");
        return false;
    }
    
    public void setDebugApp(String packageName, boolean waitForDebugger,
            boolean persistent) {
        enforceCallingPermission(android.Manifest.permission.SET_DEBUG_APP,
                "setDebugApp()");

        // Note that this is not really thread safe if there are multiple
        // callers into it at the same time, but that's not a situation we
        // care about.
        if (persistent) {
            final ContentResolver resolver = mContext.getContentResolver();
            Settings.Global.putString(
                resolver, Settings.Global.DEBUG_APP,
                packageName);
            Settings.Global.putInt(
                resolver, Settings.Global.WAIT_FOR_DEBUGGER,
                waitForDebugger ? 1 : 0);
        }

        synchronized (this) {
            if (!persistent) {
                mOrigDebugApp = mDebugApp;
                mOrigWaitForDebugger = mWaitForDebugger;
            }
            mDebugApp = packageName;
            mWaitForDebugger = waitForDebugger;
            mDebugTransient = !persistent;
            if (packageName != null) {
                final long origId = Binder.clearCallingIdentity();
                forceStopPackageLocked(packageName, -1, false, false, true, true,
                        UserHandle.USER_ALL);
                Binder.restoreCallingIdentity(origId);
            }
        }
    }

    void setOpenGlTraceApp(ApplicationInfo app, String processName) {
        synchronized (this) {
            boolean isDebuggable = "1".equals(SystemProperties.get(SYSTEM_DEBUGGABLE, "0"));
            if (!isDebuggable) {
                if ((app.flags&ApplicationInfo.FLAG_DEBUGGABLE) == 0) {
                    throw new SecurityException("Process not debuggable: " + app.packageName);
                }
            }

            mOpenGlTraceApp = processName;
        }
    }

    void setProfileApp(ApplicationInfo app, String processName, String profileFile,
            ParcelFileDescriptor profileFd, boolean autoStopProfiler) {
        synchronized (this) {
            boolean isDebuggable = "1".equals(SystemProperties.get(SYSTEM_DEBUGGABLE, "0"));
            if (!isDebuggable) {
                if ((app.flags&ApplicationInfo.FLAG_DEBUGGABLE) == 0) {
                    throw new SecurityException("Process not debuggable: " + app.packageName);
                }
            }
            mProfileApp = processName;
            mProfileFile = profileFile;
            if (mProfileFd != null) {
                try {
                    mProfileFd.close();
                } catch (IOException e) {
                }
                mProfileFd = null;
            }
            mProfileFd = profileFd;
            mProfileType = 0;
            mAutoStopProfiler = autoStopProfiler;
        }
    }

    public void setAlwaysFinish(boolean enabled) {
        enforceCallingPermission(android.Manifest.permission.SET_ALWAYS_FINISH,
                "setAlwaysFinish()");

        Settings.Global.putInt(
                mContext.getContentResolver(),
                Settings.Global.ALWAYS_FINISH_ACTIVITIES, enabled ? 1 : 0);
        
        synchronized (this) {
            mAlwaysFinishActivities = enabled;
        }
    }

    public void setActivityController(IActivityController controller) {
        enforceCallingPermission(android.Manifest.permission.SET_ACTIVITY_WATCHER,
                "setActivityController()");
        synchronized (this) {
            mController = controller;
        }
    }

    public boolean isUserAMonkey() {
        // For now the fact that there is a controller implies
        // we have a monkey.
        synchronized (this) {
            return mController != null;
        }
    }

    public void requestBugReport() {
        enforceCallingPermission(android.Manifest.permission.DUMP, "requestBugReport");
        SystemProperties.set("ctl.start", "bugreport");
    }

    public long inputDispatchingTimedOut(int pid, boolean aboveSystem) {
        if (checkCallingPermission(android.Manifest.permission.FILTER_EVENTS)
                != PackageManager.PERMISSION_GRANTED) {
            throw new SecurityException("Requires permission "
                    + android.Manifest.permission.FILTER_EVENTS);
        }

        ProcessRecord proc;

        // TODO: Unify this code with ActivityRecord.keyDispatchingTimedOut().
        synchronized (this) {
            synchronized (mPidsSelfLocked) {
                proc = mPidsSelfLocked.get(pid);
            }
            if (proc != null) {
                if (proc.debugging) {
                    return -1;
                }

                if (mDidDexOpt) {
                    // Give more time since we were dexopting.
                    mDidDexOpt = false;
                    return -1;
                }

                if (proc.instrumentationClass != null) {
                    Bundle info = new Bundle();
                    info.putString("shortMsg", "keyDispatchingTimedOut");
                    info.putString("longMsg", "Timed out while dispatching key event");
                    finishInstrumentationLocked(proc, Activity.RESULT_CANCELED, info);
                    proc = null;
                }
            }
        }

        if (proc != null) {
            appNotResponding(proc, null, null, aboveSystem, "keyDispatchingTimedOut");
            if (proc.instrumentationClass != null || proc.usingWrapper) {
                return INSTRUMENTATION_KEY_DISPATCHING_TIMEOUT;
            }
        }

        return KEY_DISPATCHING_TIMEOUT;
    }

    public Bundle getTopActivityExtras(int requestType) {
        enforceCallingPermission(android.Manifest.permission.GET_TOP_ACTIVITY_INFO,
                "getTopActivityExtras()");
        PendingActivityExtras pae;
        Bundle extras = new Bundle();
        synchronized (this) {
            ActivityRecord activity = mMainStack.mResumedActivity;
            if (activity == null) {
                Slog.w(TAG, "getTopActivityExtras failed: no resumed activity");
                return null;
            }
            extras.putString(Intent.EXTRA_ASSIST_PACKAGE, activity.packageName);
            if (activity.app == null || activity.app.thread == null) {
                Slog.w(TAG, "getTopActivityExtras failed: no process for " + activity);
                return extras;
            }
            if (activity.app.pid == Binder.getCallingPid()) {
                Slog.w(TAG, "getTopActivityExtras failed: request process same as " + activity);
                return extras;
            }
            pae = new PendingActivityExtras(activity);
            try {
                activity.app.thread.requestActivityExtras(activity.appToken, pae, requestType);
                mPendingActivityExtras.add(pae);
                mHandler.postDelayed(pae, PENDING_ACTIVITY_RESULT_TIMEOUT);
            } catch (RemoteException e) {
                Slog.w(TAG, "getTopActivityExtras failed: crash calling " + activity);
                return extras;
            }
        }
        synchronized (pae) {
            while (!pae.haveResult) {
                try {
                    pae.wait();
                } catch (InterruptedException e) {
                }
            }
            if (pae.result != null) {
                extras.putBundle(Intent.EXTRA_ASSIST_CONTEXT, pae.result);
            }
        }
        synchronized (this) {
            mPendingActivityExtras.remove(pae);
            mHandler.removeCallbacks(pae);
        }
        return extras;
    }

    public void reportTopActivityExtras(IBinder token, Bundle extras) {
        PendingActivityExtras pae = (PendingActivityExtras)token;
        synchronized (pae) {
            pae.result = extras;
            pae.haveResult = true;
            pae.notifyAll();
        }
    }

    public void registerProcessObserver(IProcessObserver observer) {
        enforceCallingPermission(android.Manifest.permission.SET_ACTIVITY_WATCHER,
                "registerProcessObserver()");
        synchronized (this) {
            mProcessObservers.register(observer);
        }
    }

    public void unregisterProcessObserver(IProcessObserver observer) {
        synchronized (this) {
            mProcessObservers.unregister(observer);
        }
    }

    public void setImmersive(IBinder token, boolean immersive) {
        synchronized(this) {
            final ActivityRecord r = mMainStack.isInStackLocked(token);
            if (r == null) {
                throw new IllegalArgumentException();
            }
            r.immersive = immersive;

            // update associated state if we're frontmost
            if (r == mFocusedActivity) {
                if (DEBUG_IMMERSIVE) {
                    Slog.d(TAG, "Frontmost changed immersion: "+ r);
                }
                applyUpdateLockStateLocked(r);
            }
        }
    }

    public boolean isImmersive(IBinder token) {
        synchronized (this) {
            ActivityRecord r = mMainStack.isInStackLocked(token);
            if (r == null) {
                throw new IllegalArgumentException();
            }
            return r.immersive;
        }
    }

    public boolean isTopActivityImmersive() {
        enforceNotIsolatedCaller("startActivity");
        synchronized (this) {
            ActivityRecord r = mMainStack.topRunningActivityLocked(null);
            return (r != null) ? r.immersive : false;
        }
    }

    public final void enterSafeMode() {
        synchronized(this) {
            // It only makes sense to do this before the system is ready
            // and started launching other packages.
            if (!mSystemReady) {
                try {
                    AppGlobals.getPackageManager().enterSafeMode();
                } catch (RemoteException e) {
                }
            }
        }
    }

    public final void showSafeModeOverlay() {
        View v = LayoutInflater.from(mContext).inflate(
                com.android.internal.R.layout.safe_mode, null);
        WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
        lp.type = WindowManager.LayoutParams.TYPE_SECURE_SYSTEM_OVERLAY;
        lp.width = WindowManager.LayoutParams.WRAP_CONTENT;
        lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
        lp.gravity = Gravity.BOTTOM | Gravity.START;
        lp.format = v.getBackground().getOpacity();
        lp.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
                | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;
        lp.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_SHOW_FOR_ALL_USERS;
        ((WindowManager)mContext.getSystemService(
                Context.WINDOW_SERVICE)).addView(v, lp);
    }

    public void noteWakeupAlarm(IIntentSender sender) {
        if (!(sender instanceof PendingIntentRecord)) {
            return;
        }
        BatteryStatsImpl stats = mBatteryStatsService.getActiveStatistics();
        synchronized (stats) {
            if (mBatteryStatsService.isOnBattery()) {
                mBatteryStatsService.enforceCallingPermission();
                PendingIntentRecord rec = (PendingIntentRecord)sender;
                int MY_UID = Binder.getCallingUid();
                int uid = rec.uid == MY_UID ? Process.SYSTEM_UID : rec.uid;
                BatteryStatsImpl.Uid.Pkg pkg =
                    stats.getPackageStatsLocked(uid, rec.key.packageName);
                pkg.incWakeupsLocked();
            }
        }
    }

    public boolean killPids(int[] pids, String pReason, boolean secure) {
        if (Binder.getCallingUid() != Process.SYSTEM_UID) {
            throw new SecurityException("killPids only available to the system");
        }
        String reason = (pReason == null) ? "Unknown" : pReason;
        // XXX Note: don't acquire main activity lock here, because the window
        // manager calls in with its locks held.
        
        boolean killed = false;
        synchronized (mPidsSelfLocked) {
            int[] types = new int[pids.length];
            int worstType = 0;
            for (int i=0; i<pids.length; i++) {
                ProcessRecord proc = mPidsSelfLocked.get(pids[i]);
                if (proc != null) {
                    int type = proc.setAdj;
                    types[i] = type;
                    if (type > worstType) {
                        worstType = type;
                    }
                }
            }
            
            // If the worst oom_adj is somewhere in the hidden proc LRU range,
            // then constrain it so we will kill all hidden procs.
            if (worstType < ProcessList.HIDDEN_APP_MAX_ADJ
                    && worstType > ProcessList.HIDDEN_APP_MIN_ADJ) {
                worstType = ProcessList.HIDDEN_APP_MIN_ADJ;
            }

            // If this is not a secure call, don't let it kill processes that
            // are important.
            if (!secure && worstType < ProcessList.SERVICE_ADJ) {
                worstType = ProcessList.SERVICE_ADJ;
            }

            Slog.w(TAG, "Killing processes " + reason + " at adjustment " + worstType);
            for (int i=0; i<pids.length; i++) {
                ProcessRecord proc = mPidsSelfLocked.get(pids[i]);
                if (proc == null) {
                    continue;
                }
                int adj = proc.setAdj;
                if (adj >= worstType && !proc.killedBackground) {
                    Slog.w(TAG, "Killing " + proc + " (adj " + adj + "): " + reason);
                    EventLog.writeEvent(EventLogTags.AM_KILL, proc.userId, proc.pid,
                            proc.processName, adj, reason);
                    killed = true;
                    proc.killedBackground = true;
                    Process.killProcessQuiet(pids[i]);
                }
            }
        }
        return killed;
    }

    @Override
    public boolean killProcessesBelowForeground(String reason) {
        if (Binder.getCallingUid() != Process.SYSTEM_UID) {
            throw new SecurityException("killProcessesBelowForeground() only available to system");
        }

        return killProcessesBelowAdj(ProcessList.FOREGROUND_APP_ADJ, reason);
    }

    private boolean killProcessesBelowAdj(int belowAdj, String reason) {
        if (Binder.getCallingUid() != Process.SYSTEM_UID) {
            throw new SecurityException("killProcessesBelowAdj() only available to system");
        }

        boolean killed = false;
        synchronized (mPidsSelfLocked) {
            final int size = mPidsSelfLocked.size();
            for (int i = 0; i < size; i++) {
                final int pid = mPidsSelfLocked.keyAt(i);
                final ProcessRecord proc = mPidsSelfLocked.valueAt(i);
                if (proc == null) continue;

                final int adj = proc.setAdj;
                if (adj > belowAdj && !proc.killedBackground) {
                    Slog.w(TAG, "Killing " + proc + " (adj " + adj + "): " + reason);
                    EventLog.writeEvent(EventLogTags.AM_KILL, proc.userId,
                            proc.pid, proc.processName, adj, reason);
                    killed = true;
                    proc.killedBackground = true;
                    Process.killProcessQuiet(pid);
                }
            }
        }
        return killed;
    }

    public final void startRunning(String pkg, String cls, String action,
            String data) {
        synchronized(this) {
            if (mStartRunning) {
                return;
            }
            mStartRunning = true;
            mTopComponent = pkg != null && cls != null
                    ? new ComponentName(pkg, cls) : null;
            mTopAction = action != null ? action : Intent.ACTION_MAIN;
            mTopData = data;
            if (!mSystemReady) {
                return;
            }
        }

        systemReady(null);
    }

    private void retrieveSettings() {
        final ContentResolver resolver = mContext.getContentResolver();
        String debugApp = Settings.Global.getString(
            resolver, Settings.Global.DEBUG_APP);
        boolean waitForDebugger = Settings.Global.getInt(
            resolver, Settings.Global.WAIT_FOR_DEBUGGER, 0) != 0;
        boolean alwaysFinishActivities = Settings.Global.getInt(
            resolver, Settings.Global.ALWAYS_FINISH_ACTIVITIES, 0) != 0;

        Configuration configuration = new Configuration();
        Settings.System.getConfiguration(resolver, configuration);

        synchronized (this) {
            mDebugApp = mOrigDebugApp = debugApp;
            mWaitForDebugger = mOrigWaitForDebugger = waitForDebugger;
            mAlwaysFinishActivities = alwaysFinishActivities;
            // This happens before any activities are started, so we can
            // change mConfiguration in-place.
            updateConfigurationLocked(configuration, null, false, true);
            if (DEBUG_CONFIGURATION) Slog.v(TAG, "Initial config: " + mConfiguration);
        }
    }

    public boolean testIsSystemReady() {
        // no need to synchronize(this) just to read & return the value
        return mSystemReady;
    }
    
    private static File getCalledPreBootReceiversFile() {
        File dataDir = Environment.getDataDirectory();
        File systemDir = new File(dataDir, "system");
        File fname = new File(systemDir, "called_pre_boots.dat");
        return fname;
    }

    static final int LAST_DONE_VERSION = 10000;

    private static ArrayList<ComponentName> readLastDonePreBootReceivers() {
        ArrayList<ComponentName> lastDoneReceivers = new ArrayList<ComponentName>();
        File file = getCalledPreBootReceiversFile();
        FileInputStream fis = null;
        try {
            fis = new FileInputStream(file);
            DataInputStream dis = new DataInputStream(new BufferedInputStream(fis, 2048));
            int fvers = dis.readInt();
            if (fvers == LAST_DONE_VERSION) {
                String vers = dis.readUTF();
                String codename = dis.readUTF();
                String build = dis.readUTF();
                if (android.os.Build.VERSION.RELEASE.equals(vers)
                        && android.os.Build.VERSION.CODENAME.equals(codename)
                        && android.os.Build.VERSION.INCREMENTAL.equals(build)) {
                    int num = dis.readInt();
                    while (num > 0) {
                        num--;
                        String pkg = dis.readUTF();
                        String cls = dis.readUTF();
                        lastDoneReceivers.add(new ComponentName(pkg, cls));
                    }
                }
            }
        } catch (FileNotFoundException e) {
        } catch (IOException e) {
            Slog.w(TAG, "Failure reading last done pre-boot receivers", e);
        } finally {
            if (fis != null) {
                try {
                    fis.close();
                } catch (IOException e) {
                }
            }
        }
        return lastDoneReceivers;
    }
    
    private static void writeLastDonePreBootReceivers(ArrayList<ComponentName> list) {
        File file = getCalledPreBootReceiversFile();
        FileOutputStream fos = null;
        DataOutputStream dos = null;
        try {
            Slog.i(TAG, "Writing new set of last done pre-boot receivers...");
            fos = new FileOutputStream(file);
            dos = new DataOutputStream(new BufferedOutputStream(fos, 2048));
            dos.writeInt(LAST_DONE_VERSION);
            dos.writeUTF(android.os.Build.VERSION.RELEASE);
            dos.writeUTF(android.os.Build.VERSION.CODENAME);
            dos.writeUTF(android.os.Build.VERSION.INCREMENTAL);
            dos.writeInt(list.size());
            for (int i=0; i<list.size(); i++) {
                dos.writeUTF(list.get(i).getPackageName());
                dos.writeUTF(list.get(i).getClassName());
            }
        } catch (IOException e) {
            Slog.w(TAG, "Failure writing last done pre-boot receivers", e);
            file.delete();
        } finally {
            FileUtils.sync(fos);
            if (dos != null) {
                try {
                    dos.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }
    }
    
    public void systemReady(final Runnable goingCallback) {
        synchronized(this) {
            if (mSystemReady) {
                if (goingCallback != null) goingCallback.run();
                return;
            }
            
            // Check to see if there are any update receivers to run.
            if (!mDidUpdate) {
                if (mWaitingUpdate) {
                    return;
                }
                Intent intent = new Intent(Intent.ACTION_PRE_BOOT_COMPLETED);
                List<ResolveInfo> ris = null;
                try {
                    ris = AppGlobals.getPackageManager().queryIntentReceivers(
                            intent, null, 0, 0);
                } catch (RemoteException e) {
                }
                if (ris != null) {
                    for (int i=ris.size()-1; i>=0; i--) {
                        if ((ris.get(i).activityInfo.applicationInfo.flags
                                &ApplicationInfo.FLAG_SYSTEM) == 0) {
                            ris.remove(i);
                        }
                    }
                    intent.addFlags(Intent.FLAG_RECEIVER_BOOT_UPGRADE);

                    ArrayList<ComponentName> lastDoneReceivers = readLastDonePreBootReceivers();

                    final ArrayList<ComponentName> doneReceivers = new ArrayList<ComponentName>();
                    for (int i=0; i<ris.size(); i++) {
                        ActivityInfo ai = ris.get(i).activityInfo;
                        ComponentName comp = new ComponentName(ai.packageName, ai.name);
                        if (lastDoneReceivers.contains(comp)) {
                            ris.remove(i);
                            i--;
                        }
                    }

                    final int[] users = getUsersLocked();
                    for (int i=0; i<ris.size(); i++) {
                        ActivityInfo ai = ris.get(i).activityInfo;
                        ComponentName comp = new ComponentName(ai.packageName, ai.name);
                        doneReceivers.add(comp);
                        intent.setComponent(comp);
                        for (int j=0; j<users.length; j++) {
                            IIntentReceiver finisher = null;
                            if (i == ris.size()-1 && j == users.length-1) {
                                finisher = new IIntentReceiver.Stub() {
                                    public void performReceive(Intent intent, int resultCode,
                                            String data, Bundle extras, boolean ordered,
                                            boolean sticky, int sendingUser) {
                                        // The raw IIntentReceiver interface is called
                                        // with the AM lock held, so redispatch to
                                        // execute our code without the lock.
                                        mHandler.post(new Runnable() {
                                            public void run() {
                                                synchronized (ActivityManagerService.this) {
                                                    mDidUpdate = true;
                                                }
                                                writeLastDonePreBootReceivers(doneReceivers);
                                                showBootMessage(mContext.getText(
                                                        R.string.android_upgrading_complete),
                                                        false);
                                                systemReady(goingCallback);
                                            }
                                        });
                                    }
                                };
                            }
                            Slog.i(TAG, "Sending system update to " + intent.getComponent()
                                    + " for user " + users[j]);
                            broadcastIntentLocked(null, null, intent, null, finisher,
                                    0, null, null, null, true, false, MY_PID, Process.SYSTEM_UID,
                                    users[j]);
                            if (finisher != null) {
                                mWaitingUpdate = true;
                            }
                        }
                    }
                }
                if (mWaitingUpdate) {
                    return;
                }
                mDidUpdate = true;
            }
            
            mSystemReady = true;
            if (!mStartRunning) {
                return;
            }
        }

        ArrayList<ProcessRecord> procsToKill = null;
        synchronized(mPidsSelfLocked) {
            for (int i=mPidsSelfLocked.size()-1; i>=0; i--) {
                ProcessRecord proc = mPidsSelfLocked.valueAt(i);
                if (!isAllowedWhileBooting(proc.info)){
                    if (procsToKill == null) {
                        procsToKill = new ArrayList<ProcessRecord>();
                    }
                    procsToKill.add(proc);
                }
            }
        }
        
        synchronized(this) {
            if (procsToKill != null) {
                for (int i=procsToKill.size()-1; i>=0; i--) {
                    ProcessRecord proc = procsToKill.get(i);
                    Slog.i(TAG, "Removing system update proc: " + proc);
                    removeProcessLocked(proc, true, false, "system update done");
                }
            }
            
            // Now that we have cleaned up any update processes, we
            // are ready to start launching real processes and know that
            // we won't trample on them any more.
            mProcessesReady = true;
        }
        
        Slog.i(TAG, "System now ready");
        EventLog.writeEvent(EventLogTags.BOOT_PROGRESS_AMS_READY,
            SystemClock.uptimeMillis());

        synchronized(this) {
            // Make sure we have no pre-ready processes sitting around.
            
            if (mFactoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL) {
                ResolveInfo ri = mContext.getPackageManager()
                        .resolveActivity(new Intent(Intent.ACTION_FACTORY_TEST),
                                STOCK_PM_FLAGS);
                CharSequence errorMsg = null;
                if (ri != null) {
                    ActivityInfo ai = ri.activityInfo;
                    ApplicationInfo app = ai.applicationInfo;
                    if ((app.flags&ApplicationInfo.FLAG_SYSTEM) != 0) {
                        mTopAction = Intent.ACTION_FACTORY_TEST;
                        mTopData = null;
                        mTopComponent = new ComponentName(app.packageName,
                                ai.name);
                    } else {
                        errorMsg = mContext.getResources().getText(
                                com.android.internal.R.string.factorytest_not_system);
                    }
                } else {
                    errorMsg = mContext.getResources().getText(
                            com.android.internal.R.string.factorytest_no_action);
                }
                if (errorMsg != null) {
                    mTopAction = null;
                    mTopData = null;
                    mTopComponent = null;
                    Message msg = Message.obtain();
                    msg.what = SHOW_FACTORY_ERROR_MSG;
                    msg.getData().putCharSequence("msg", errorMsg);
                    mHandler.sendMessage(msg);
                }
            }
        }

        retrieveSettings();

        if (goingCallback != null) goingCallback.run();
        
        synchronized (this) {
            if (mFactoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL) {
                try {
                    List apps = AppGlobals.getPackageManager().
                        getPersistentApplications(STOCK_PM_FLAGS);
                    if (apps != null) {
                        int N = apps.size();
                        int i;
                        for (i=0; i<N; i++) {
                            ApplicationInfo info
                                = (ApplicationInfo)apps.get(i);
                            if (info != null &&
                                    !info.packageName.equals("android")) {
                                addAppLocked(info, false);
                            }
                        }
                    }
                } catch (RemoteException ex) {
                    // pm is in same process, this will never happen.
                }
            }

            // Start up initial activity.
            mBooting = true;
            
            try {
                if (AppGlobals.getPackageManager().hasSystemUidErrors()) {
                    Message msg = Message.obtain();
                    msg.what = SHOW_UID_ERROR_MSG;
                    mHandler.sendMessage(msg);
                }
            } catch (RemoteException e) {
            }

            long ident = Binder.clearCallingIdentity();
            try {
                Intent intent = new Intent(Intent.ACTION_USER_STARTED);
                intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY
                        | Intent.FLAG_RECEIVER_FOREGROUND);
                intent.putExtra(Intent.EXTRA_USER_HANDLE, mCurrentUserId);
                broadcastIntentLocked(null, null, intent,
                        null, null, 0, null, null, null,
                        false, false, MY_PID, Process.SYSTEM_UID, mCurrentUserId);
                intent = new Intent(Intent.ACTION_USER_STARTING);
                intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
                intent.putExtra(Intent.EXTRA_USER_HANDLE, mCurrentUserId);
                broadcastIntentLocked(null, null, intent,
                        null, new IIntentReceiver.Stub() {
                            @Override
                            public void performReceive(Intent intent, int resultCode, String data,
                                    Bundle extras, boolean ordered, boolean sticky, int sendingUser)
                                    throws RemoteException {
                            }
                        }, 0, null, null,
                        android.Manifest.permission.INTERACT_ACROSS_USERS,
                        true, false, MY_PID, Process.SYSTEM_UID, UserHandle.USER_ALL);
            } finally {
                Binder.restoreCallingIdentity(ident);
            }
            mMainStack.resumeTopActivityLocked(null);
            sendUserSwitchBroadcastsLocked(-1, mCurrentUserId);
        }
    }

    private boolean makeAppCrashingLocked(ProcessRecord app,
            String shortMsg, String longMsg, String stackTrace) {
        app.crashing = true;
        app.crashingReport = generateProcessError(app,
                ActivityManager.ProcessErrorStateInfo.CRASHED, null, shortMsg, longMsg, stackTrace);
        startAppProblemLocked(app);
        app.stopFreezingAllLocked();
        return handleAppCrashLocked(app);
    }

    private void makeAppNotRespondingLocked(ProcessRecord app,
            String activity, String shortMsg, String longMsg) {
        app.notResponding = true;
        app.notRespondingReport = generateProcessError(app,
                ActivityManager.ProcessErrorStateInfo.NOT_RESPONDING,
                activity, shortMsg, longMsg, null);
        startAppProblemLocked(app);
        app.stopFreezingAllLocked();
    }
    
    /**
     * Generate a process error record, suitable for attachment to a ProcessRecord.
     * 
     * @param app The ProcessRecord in which the error occurred.
     * @param condition Crashing, Application Not Responding, etc.  Values are defined in 
     *                      ActivityManager.AppErrorStateInfo
     * @param activity The activity associated with the crash, if known.
     * @param shortMsg Short message describing the crash.
     * @param longMsg Long message describing the crash.
     * @param stackTrace Full crash stack trace, may be null.
     *
     * @return Returns a fully-formed AppErrorStateInfo record.
     */
    private ActivityManager.ProcessErrorStateInfo generateProcessError(ProcessRecord app, 
            int condition, String activity, String shortMsg, String longMsg, String stackTrace) {
        ActivityManager.ProcessErrorStateInfo report = new ActivityManager.ProcessErrorStateInfo();

        report.condition = condition;
        report.processName = app.processName;
        report.pid = app.pid;
        report.uid = app.info.uid;
        report.tag = activity;
        report.shortMsg = shortMsg;
        report.longMsg = longMsg;
        report.stackTrace = stackTrace;

        return report;
    }

    void killAppAtUsersRequest(ProcessRecord app, Dialog fromDialog) {
        synchronized (this) {
            app.crashing = false;
            app.crashingReport = null;
            app.notResponding = false;
            app.notRespondingReport = null;
            if (app.anrDialog == fromDialog) {
                app.anrDialog = null;
            }
            if (app.waitDialog == fromDialog) {
                app.waitDialog = null;
            }
            if (app.pid > 0 && app.pid != MY_PID) {
                handleAppCrashLocked(app);
                Slog.i(ActivityManagerService.TAG, "Killing " + app + ": user's request");
                EventLog.writeEvent(EventLogTags.AM_KILL, app.userId, app.pid,
                        app.processName, app.setAdj, "user's request after error");
                Process.killProcessQuiet(app.pid);
            }
        }
    }

    private boolean handleAppCrashLocked(ProcessRecord app) {
        if (mHeadless) {
            Log.e(TAG, "handleAppCrashLocked: " + app.processName);
            return false;
        }
        long now = SystemClock.uptimeMillis();

        Long crashTime;
        if (!app.isolated) {
            crashTime = mProcessCrashTimes.get(app.info.processName, app.uid);
        } else {
            crashTime = null;
        }
        if (crashTime != null && now < crashTime+ProcessList.MIN_CRASH_INTERVAL) {
            // This process loses!
            Slog.w(TAG, "Process " + app.info.processName
                    + " has crashed too many times: killing!");
            EventLog.writeEvent(EventLogTags.AM_PROCESS_CRASHED_TOO_MUCH,
                    app.userId, app.info.processName, app.uid);
            for (int i=mMainStack.mHistory.size()-1; i>=0; i--) {
                ActivityRecord r = (ActivityRecord)mMainStack.mHistory.get(i);
                if (r.app == app) {
                    Slog.w(TAG, "  Force finishing activity "
                        + r.intent.getComponent().flattenToShortString());
                    r.stack.finishActivityLocked(r, i, Activity.RESULT_CANCELED,
                            null, "crashed", false);
                }
            }
            if (!app.persistent) {
                // We don't want to start this process again until the user
                // explicitly does so...  but for persistent process, we really
                // need to keep it running.  If a persistent process is actually
                // repeatedly crashing, then badness for everyone.
                EventLog.writeEvent(EventLogTags.AM_PROC_BAD, app.userId, app.uid,
                        app.info.processName);
                if (!app.isolated) {
                    // XXX We don't have a way to mark isolated processes
                    // as bad, since they don't have a peristent identity.
                    mBadProcesses.put(app.info.processName, app.uid, now);
                    mProcessCrashTimes.remove(app.info.processName, app.uid);
                }
                app.bad = true;
                app.removed = true;
                // Don't let services in this process be restarted and potentially
                // annoy the user repeatedly.  Unless it is persistent, since those
                // processes run critical code.
                removeProcessLocked(app, false, false, "crash");
                mMainStack.resumeTopActivityLocked(null);
                return false;
            }
            mMainStack.resumeTopActivityLocked(null);
        } else {
            ActivityRecord r = mMainStack.topRunningActivityLocked(null);
            if (r != null && r.app == app) {
                // If the top running activity is from this crashing
                // process, then terminate it to avoid getting in a loop.
                Slog.w(TAG, "  Force finishing activity "
                        + r.intent.getComponent().flattenToShortString());
                int index = mMainStack.indexOfActivityLocked(r);
                r.stack.finishActivityLocked(r, index,
                        Activity.RESULT_CANCELED, null, "crashed", false);
                // Also terminate any activities below it that aren't yet
                // stopped, to avoid a situation where one will get
                // re-start our crashing activity once it gets resumed again.
                index--;
                if (index >= 0) {
                    r = (ActivityRecord)mMainStack.mHistory.get(index);
                    if (r.state == ActivityState.RESUMED
                            || r.state == ActivityState.PAUSING
                            || r.state == ActivityState.PAUSED) {
                        if (!r.isHomeActivity || mHomeProcess != r.app) {
                            Slog.w(TAG, "  Force finishing activity "
                                    + r.intent.getComponent().flattenToShortString());
                            r.stack.finishActivityLocked(r, index,
                                    Activity.RESULT_CANCELED, null, "crashed", false);
                        }
                    }
                }
            }
        }

        // Bump up the crash count of any services currently running in the proc.
        if (app.services.size() != 0) {
            // Any services running in the application need to be placed
            // back in the pending list.
            Iterator<ServiceRecord> it = app.services.iterator();
            while (it.hasNext()) {
                ServiceRecord sr = it.next();
                sr.crashCount++;
            }
        }

        // If the crashing process is what we consider to be the "home process" and it has been
        // replaced by a third-party app, clear the package preferred activities from packages
        // with a home activity running in the process to prevent a repeatedly crashing app
        // from blocking the user to manually clear the list.
        if (app == mHomeProcess && mHomeProcess.activities.size() > 0
                    && (mHomeProcess.info.flags & ApplicationInfo.FLAG_SYSTEM) == 0) {
            Iterator it = mHomeProcess.activities.iterator();
            while (it.hasNext()) {
                ActivityRecord r = (ActivityRecord)it.next();
                if (r.isHomeActivity) {
                    Log.i(TAG, "Clearing package preferred activities from " + r.packageName);
                    try {
                        ActivityThread.getPackageManager()
                                .clearPackagePreferredActivities(r.packageName);
                    } catch (RemoteException c) {
                        // pm is in same process, this will never happen.
                    }
                }
            }
        }

        if (!app.isolated) {
            // XXX Can't keep track of crash times for isolated processes,
            // because they don't have a perisistent identity.
            mProcessCrashTimes.put(app.info.processName, app.uid, now);
        }

        return true;
    }

    void startAppProblemLocked(ProcessRecord app) {
        if (app.userId == mCurrentUserId) {
            app.errorReportReceiver = ApplicationErrorReport.getErrorReportReceiver(
                    mContext, app.info.packageName, app.info.flags);
        } else {
            // If this app is not running under the current user, then we
            // can't give it a report button because that would require
            // launching the report UI under a different user.
            app.errorReportReceiver = null;
        }
        skipCurrentReceiverLocked(app);
    }

    void skipCurrentReceiverLocked(ProcessRecord app) {
        for (BroadcastQueue queue : mBroadcastQueues) {
            queue.skipCurrentReceiverLocked(app);
        }
    }

    /**
     * Used by {@link com.android.internal.os.RuntimeInit} to report when an application crashes.
     * The application process will exit immediately after this call returns.
     * @param app object of the crashing app, null for the system server
     * @param crashInfo describing the exception
     */
    public void handleApplicationCrash(IBinder app, ApplicationErrorReport.CrashInfo crashInfo) {
        ProcessRecord r = findAppProcess(app, "Crash");
        final String processName = app == null ? "system_server"
                : (r == null ? "unknown" : r.processName);

        EventLog.writeEvent(EventLogTags.AM_CRASH, Binder.getCallingPid(),
                UserHandle.getUserId(Binder.getCallingUid()), processName,
                r == null ? -1 : r.info.flags,
                crashInfo.exceptionClassName,
                crashInfo.exceptionMessage,
                crashInfo.throwFileName,
                crashInfo.throwLineNumber);

        addErrorToDropBox("crash", r, processName, null, null, null, null, null, crashInfo);

        crashApplication(r, crashInfo);
    }

    public void handleApplicationStrictModeViolation(
            IBinder app,
            int violationMask,
            StrictMode.ViolationInfo info) {
        ProcessRecord r = findAppProcess(app, "StrictMode");
        if (r == null) {
            return;
        }

        if ((violationMask & StrictMode.PENALTY_DROPBOX) != 0) {
            Integer stackFingerprint = info.hashCode();
            boolean logIt = true;
            synchronized (mAlreadyLoggedViolatedStacks) {
                if (mAlreadyLoggedViolatedStacks.contains(stackFingerprint)) {
                    logIt = false;
                    // TODO: sub-sample into EventLog for these, with
                    // the info.durationMillis?  Then we'd get
                    // the relative pain numbers, without logging all
                    // the stack traces repeatedly.  We'd want to do
                    // likewise in the client code, which also does
                    // dup suppression, before the Binder call.
                } else {
                    if (mAlreadyLoggedViolatedStacks.size() >= MAX_DUP_SUPPRESSED_STACKS) {
                        mAlreadyLoggedViolatedStacks.clear();
                    }
                    mAlreadyLoggedViolatedStacks.add(stackFingerprint);
                }
            }
            if (logIt) {
                logStrictModeViolationToDropBox(r, info);
            }
        }

        if ((violationMask & StrictMode.PENALTY_DIALOG) != 0) {
            AppErrorResult result = new AppErrorResult();
            synchronized (this) {
                final long origId = Binder.clearCallingIdentity();

                Message msg = Message.obtain();
                msg.what = SHOW_STRICT_MODE_VIOLATION_MSG;
                HashMap<String, Object> data = new HashMap<String, Object>();
                data.put("result", result);
                data.put("app", r);
                data.put("violationMask", violationMask);
                data.put("info", info);
                msg.obj = data;
                mHandler.sendMessage(msg);

                Binder.restoreCallingIdentity(origId);
            }
            int res = result.get();
            Slog.w(TAG, "handleApplicationStrictModeViolation; res=" + res);
        }
    }

    // Depending on the policy in effect, there could be a bunch of
    // these in quick succession so we try to batch these together to
    // minimize disk writes, number of dropbox entries, and maximize
    // compression, by having more fewer, larger records.
    private void logStrictModeViolationToDropBox(
            ProcessRecord process,
            StrictMode.ViolationInfo info) {
        if (info == null) {
            return;
        }
        final boolean isSystemApp = process == null ||
                (process.info.flags & (ApplicationInfo.FLAG_SYSTEM |
                                       ApplicationInfo.FLAG_UPDATED_SYSTEM_APP)) != 0;
        final String processName = process == null ? "unknown" : process.processName;
        final String dropboxTag = isSystemApp ? "system_app_strictmode" : "data_app_strictmode";
        final DropBoxManager dbox = (DropBoxManager)
                mContext.getSystemService(Context.DROPBOX_SERVICE);

        // Exit early if the dropbox isn't configured to accept this report type.
        if (dbox == null || !dbox.isTagEnabled(dropboxTag)) return;

        boolean bufferWasEmpty;
        boolean needsFlush;
        final StringBuilder sb = isSystemApp ? mStrictModeBuffer : new StringBuilder(1024);
        synchronized (sb) {
            bufferWasEmpty = sb.length() == 0;
            appendDropBoxProcessHeaders(process, processName, sb);
            sb.append("Build: ").append(Build.FINGERPRINT).append("\n");
            sb.append("System-App: ").append(isSystemApp).append("\n");
            sb.append("Uptime-Millis: ").append(info.violationUptimeMillis).append("\n");
            if (info.violationNumThisLoop != 0) {
                sb.append("Loop-Violation-Number: ").append(info.violationNumThisLoop).append("\n");
            }
            if (info.numAnimationsRunning != 0) {
                sb.append("Animations-Running: ").append(info.numAnimationsRunning).append("\n");
            }
            if (info.broadcastIntentAction != null) {
                sb.append("Broadcast-Intent-Action: ").append(info.broadcastIntentAction).append("\n");
            }
            if (info.durationMillis != -1) {
                sb.append("Duration-Millis: ").append(info.durationMillis).append("\n");
            }
            if (info.numInstances != -1) {
                sb.append("Instance-Count: ").append(info.numInstances).append("\n");
            }
            if (info.tags != null) {
                for (String tag : info.tags) {
                    sb.append("Span-Tag: ").append(tag).append("\n");
                }
            }
            sb.append("\n");
            if (info.crashInfo != null && info.crashInfo.stackTrace != null) {
                sb.append(info.crashInfo.stackTrace);
            }
            sb.append("\n");

            // Only buffer up to ~64k.  Various logging bits truncate
            // things at 128k.
            needsFlush = (sb.length() > 64 * 1024);
        }

        // Flush immediately if the buffer's grown too large, or this
        // is a non-system app.  Non-system apps are isolated with a
        // different tag & policy and not batched.
        //
        // Batching is useful during internal testing with
        // StrictMode settings turned up high.  Without batching,
        // thousands of separate files could be created on boot.
        if (!isSystemApp || needsFlush) {
            new Thread("Error dump: " + dropboxTag) {
                @Override
                public void run() {
                    String report;
                    synchronized (sb) {
                        report = sb.toString();
                        sb.delete(0, sb.length());
                        sb.trimToSize();
                    }
                    if (report.length() != 0) {
                        dbox.addText(dropboxTag, report);
                    }
                }
            }.start();
            return;
        }

        // System app batching:
        if (!bufferWasEmpty) {
            // An existing dropbox-writing thread is outstanding, so
            // we don't need to start it up.  The existing thread will
            // catch the buffer appends we just did.
            return;
        }

        // Worker thread to both batch writes and to avoid blocking the caller on I/O.
        // (After this point, we shouldn't access AMS internal data structures.)
        new Thread("Error dump: " + dropboxTag) {
            @Override
            public void run() {
                // 5 second sleep to let stacks arrive and be batched together
                try {
                    Thread.sleep(5000);  // 5 seconds
                } catch (InterruptedException e) {}

                String errorReport;
                synchronized (mStrictModeBuffer) {
                    errorReport = mStrictModeBuffer.toString();
                    if (errorReport.length() == 0) {
                        return;
                    }
                    mStrictModeBuffer.delete(0, mStrictModeBuffer.length());
                    mStrictModeBuffer.trimToSize();
                }
                dbox.addText(dropboxTag, errorReport);
            }
        }.start();
    }

    /**
     * Used by {@link Log} via {@link com.android.internal.os.RuntimeInit} to report serious errors.
     * @param app object of the crashing app, null for the system server
     * @param tag reported by the caller
     * @param crashInfo describing the context of the error
     * @return true if the process should exit immediately (WTF is fatal)
     */
    public boolean handleApplicationWtf(IBinder app, String tag,
            ApplicationErrorReport.CrashInfo crashInfo) {
        ProcessRecord r = findAppProcess(app, "WTF");
        final String processName = app == null ? "system_server"
                : (r == null ? "unknown" : r.processName);

        EventLog.writeEvent(EventLogTags.AM_WTF,
                UserHandle.getUserId(Binder.getCallingUid()), Binder.getCallingPid(),
                processName,
                r == null ? -1 : r.info.flags,
                tag, crashInfo.exceptionMessage);

        addErrorToDropBox("wtf", r, processName, null, null, tag, null, null, crashInfo);

        if (r != null && r.pid != Process.myPid() &&
                Settings.Global.getInt(mContext.getContentResolver(),
                        Settings.Global.WTF_IS_FATAL, 0) != 0) {
            crashApplication(r, crashInfo);
            return true;
        } else {
            return false;
        }
    }

    /**
     * @param app object of some object (as stored in {@link com.android.internal.os.RuntimeInit})
     * @return the corresponding {@link ProcessRecord} object, or null if none could be found
     */
    private ProcessRecord findAppProcess(IBinder app, String reason) {
        if (app == null) {
            return null;
        }

        synchronized (this) {
            for (SparseArray<ProcessRecord> apps : mProcessNames.getMap().values()) {
                final int NA = apps.size();
                for (int ia=0; ia<NA; ia++) {
                    ProcessRecord p = apps.valueAt(ia);
                    if (p.thread != null && p.thread.asBinder() == app) {
                        return p;
                    }
                }
            }

            Slog.w(TAG, "Can't find mystery application for " + reason
                    + " from pid=" + Binder.getCallingPid()
                    + " uid=" + Binder.getCallingUid() + ": " + app);
            return null;
        }
    }

    /**
     * Utility function for addErrorToDropBox and handleStrictModeViolation's logging
     * to append various headers to the dropbox log text.
     */
    private void appendDropBoxProcessHeaders(ProcessRecord process, String processName,
            StringBuilder sb) {
        // Watchdog thread ends up invoking this function (with
        // a null ProcessRecord) to add the stack file to dropbox.
        // Do not acquire a lock on this (am) in such cases, as it
        // could cause a potential deadlock, if and when watchdog
        // is invoked due to unavailability of lock on am and it
        // would prevent watchdog from killing system_server.
        if (process == null) {
            sb.append("Process: ").append(processName).append("\n");
            return;
        }
        // Note: ProcessRecord 'process' is guarded by the service
        // instance.  (notably process.pkgList, which could otherwise change
        // concurrently during execution of this method)
        synchronized (this) {
            sb.append("Process: ").append(processName).append("\n");
            int flags = process.info.flags;
            IPackageManager pm = AppGlobals.getPackageManager();
            sb.append("Flags: 0x").append(Integer.toString(flags, 16)).append("\n");
            for (String pkg : process.pkgList) {
                sb.append("Package: ").append(pkg);
                try {
                    PackageInfo pi = pm.getPackageInfo(pkg, 0, UserHandle.getCallingUserId());
                    if (pi != null) {
                        sb.append(" v").append(pi.versionCode);
                        if (pi.versionName != null) {
                            sb.append(" (").append(pi.versionName).append(")");
                        }
                    }
                } catch (RemoteException e) {
                    Slog.e(TAG, "Error getting package info: " + pkg, e);
                }
                sb.append("\n");
            }
        }
    }

    private static String processClass(ProcessRecord process) {
        if (process == null || process.pid == MY_PID) {
            return "system_server";
        } else if ((process.info.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {
            return "system_app";
        } else {
            return "data_app";
        }
    }

    /**
     * Write a description of an error (crash, WTF, ANR) to the drop box.
     * @param eventType to include in the drop box tag ("crash", "wtf", etc.)
     * @param process which caused the error, null means the system server
     * @param activity which triggered the error, null if unknown
     * @param parent activity related to the error, null if unknown
     * @param subject line related to the error, null if absent
     * @param report in long form describing the error, null if absent
     * @param logFile to include in the report, null if none
     * @param crashInfo giving an application stack trace, null if absent
     */
    public void addErrorToDropBox(String eventType,
            ProcessRecord process, String processName, ActivityRecord activity,
            ActivityRecord parent, String subject,
            final String report, final File logFile,
            final ApplicationErrorReport.CrashInfo crashInfo) {
        // NOTE -- this must never acquire the ActivityManagerService lock,
        // otherwise the watchdog may be prevented from resetting the system.

        final String dropboxTag = processClass(process) + "_" + eventType;
        final DropBoxManager dbox = (DropBoxManager)
                mContext.getSystemService(Context.DROPBOX_SERVICE);

        // Exit early if the dropbox isn't configured to accept this report type.
        if (dbox == null || !dbox.isTagEnabled(dropboxTag)) return;

        final StringBuilder sb = new StringBuilder(1024);
        appendDropBoxProcessHeaders(process, processName, sb);
        if (activity != null) {
            sb.append("Activity: ").append(activity.shortComponentName).append("\n");
        }
        if (parent != null && parent.app != null && parent.app.pid != process.pid) {
            sb.append("Parent-Process: ").append(parent.app.processName).append("\n");
        }
        if (parent != null && parent != activity) {
            sb.append("Parent-Activity: ").append(parent.shortComponentName).append("\n");
        }
        if (subject != null) {
            sb.append("Subject: ").append(subject).append("\n");
        }
        sb.append("Build: ").append(Build.FINGERPRINT).append("\n");
        if (Debug.isDebuggerConnected()) {
            sb.append("Debugger: Connected\n");
        }
        sb.append("\n");

        // Do the rest in a worker thread to avoid blocking the caller on I/O
        // (After this point, we shouldn't access AMS internal data structures.)
        Thread worker = new Thread("Error dump: " + dropboxTag) {
            @Override
            public void run() {
                if (report != null) {
                    sb.append(report);
                }
                if (logFile != null) {
                    try {
                        sb.append(FileUtils.readTextFile(logFile, 128 * 1024, "\n\n[[TRUNCATED]]"));
                    } catch (IOException e) {
                        Slog.e(TAG, "Error reading " + logFile, e);
                    }
                }
                if (crashInfo != null && crashInfo.stackTrace != null) {
                    sb.append(crashInfo.stackTrace);
                }

                String setting = Settings.Global.ERROR_LOGCAT_PREFIX + dropboxTag;
                int lines = Settings.Global.getInt(mContext.getContentResolver(), setting, 0);
                if (lines > 0) {
                    sb.append("\n");

                    // Merge several logcat streams, and take the last N lines
                    InputStreamReader input = null;
                    try {
                        java.lang.Process logcat = new ProcessBuilder("/system/bin/logcat",
                                "-v", "time", "-b", "events", "-b", "system", "-b", "main",
                                "-t", String.valueOf(lines)).redirectErrorStream(true).start();

                        try { logcat.getOutputStream().close(); } catch (IOException e) {}
                        try { logcat.getErrorStream().close(); } catch (IOException e) {}
                        input = new InputStreamReader(logcat.getInputStream());

                        int num;
                        char[] buf = new char[8192];
                        while ((num = input.read(buf)) > 0) sb.append(buf, 0, num);
                    } catch (IOException e) {
                        Slog.e(TAG, "Error running logcat", e);
                    } finally {
                        if (input != null) try { input.close(); } catch (IOException e) {}
                    }
                }

                dbox.addText(dropboxTag, sb.toString());
            }
        };

        if (process == null) {
            // If process is null, we are being called from some internal code
            // and may be about to die -- run this synchronously.
            worker.run();
        } else {
            worker.start();
        }
    }

    /**
     * Bring up the "unexpected error" dialog box for a crashing app.
     * Deal with edge cases (intercepts from instrumented applications,
     * ActivityController, error intent receivers, that sort of thing).
     * @param r the application crashing
     * @param crashInfo describing the failure
     */
    private void crashApplication(ProcessRecord r, ApplicationErrorReport.CrashInfo crashInfo) {
        long timeMillis = System.currentTimeMillis();
        String shortMsg = crashInfo.exceptionClassName;
        String longMsg = crashInfo.exceptionMessage;
        String stackTrace = crashInfo.stackTrace;
        if (shortMsg != null && longMsg != null) {
            longMsg = shortMsg + ": " + longMsg;
        } else if (shortMsg != null) {
            longMsg = shortMsg;
        }

        AppErrorResult result = new AppErrorResult();
        synchronized (this) {
            if (mController != null) {
                try {
                    String name = r != null ? r.processName : null;
                    int pid = r != null ? r.pid : Binder.getCallingPid();
                    if (!mController.appCrashed(name, pid,
                            shortMsg, longMsg, timeMillis, crashInfo.stackTrace)) {
                        Slog.w(TAG, "Force-killing crashed app " + name
                                + " at watcher's request");
                        Process.killProcess(pid);
                        return;
                    }
                } catch (RemoteException e) {
                    mController = null;
                }
            }

            final long origId = Binder.clearCallingIdentity();

            // If this process is running instrumentation, finish it.
            if (r != null && r.instrumentationClass != null) {
                Slog.w(TAG, "Error in app " + r.processName
                      + " running instrumentation " + r.instrumentationClass + ":");
                if (shortMsg != null) Slog.w(TAG, "  " + shortMsg);
                if (longMsg != null) Slog.w(TAG, "  " + longMsg);
                Bundle info = new Bundle();
                info.putString("shortMsg", shortMsg);
                info.putString("longMsg", longMsg);
                finishInstrumentationLocked(r, Activity.RESULT_CANCELED, info);
                Binder.restoreCallingIdentity(origId);
                return;
            }

            // If we can't identify the process or it's already exceeded its crash quota,
            // quit right away without showing a crash dialog.
            if (r == null || !makeAppCrashingLocked(r, shortMsg, longMsg, stackTrace)) {
                Binder.restoreCallingIdentity(origId);
                return;
            }

            Message msg = Message.obtain();
            msg.what = SHOW_ERROR_MSG;
            HashMap data = new HashMap();
            data.put("result", result);
            data.put("app", r);
            msg.obj = data;
            mHandler.sendMessage(msg);

            Binder.restoreCallingIdentity(origId);
        }

        int res = result.get();

        Intent appErrorIntent = null;
        synchronized (this) {
            if (r != null && !r.isolated) {
                // XXX Can't keep track of crash time for isolated processes,
                // since they don't have a persistent identity.
                mProcessCrashTimes.put(r.info.processName, r.uid,
                        SystemClock.uptimeMillis());
            }
            if (res == AppErrorDialog.FORCE_QUIT_AND_REPORT) {
                appErrorIntent = createAppErrorIntentLocked(r, timeMillis, crashInfo);
            }
        }

        if (appErrorIntent != null) {
            try {
                mContext.startActivityAsUser(appErrorIntent, new UserHandle(r.userId));
            } catch (ActivityNotFoundException e) {
                Slog.w(TAG, "bug report receiver dissappeared", e);
            }
        }
    }

    Intent createAppErrorIntentLocked(ProcessRecord r,
            long timeMillis, ApplicationErrorReport.CrashInfo crashInfo) {
        ApplicationErrorReport report = createAppErrorReportLocked(r, timeMillis, crashInfo);
        if (report == null) {
            return null;
        }
        Intent result = new Intent(Intent.ACTION_APP_ERROR);
        result.setComponent(r.errorReportReceiver);
        result.putExtra(Intent.EXTRA_BUG_REPORT, report);
        result.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        return result;
    }

    private ApplicationErrorReport createAppErrorReportLocked(ProcessRecord r,
            long timeMillis, ApplicationErrorReport.CrashInfo crashInfo) {
        if (r.errorReportReceiver == null) {
            return null;
        }

        if (!r.crashing && !r.notResponding) {
            return null;
        }

        ApplicationErrorReport report = new ApplicationErrorReport();
        report.packageName = r.info.packageName;
        report.installerPackageName = r.errorReportReceiver.getPackageName();
        report.processName = r.processName;
        report.time = timeMillis;
        report.systemApp = (r.info.flags & ApplicationInfo.FLAG_SYSTEM) != 0;

        if (r.crashing) {
            report.type = ApplicationErrorReport.TYPE_CRASH;
            report.crashInfo = crashInfo;
        } else if (r.notResponding) {
            report.type = ApplicationErrorReport.TYPE_ANR;
            report.anrInfo = new ApplicationErrorReport.AnrInfo();

            report.anrInfo.activity = r.notRespondingReport.tag;
            report.anrInfo.cause = r.notRespondingReport.shortMsg;
            report.anrInfo.info = r.notRespondingReport.longMsg;
        }

        return report;
    }

    public List<ActivityManager.ProcessErrorStateInfo> getProcessesInErrorState() {
        enforceNotIsolatedCaller("getProcessesInErrorState");
        // assume our apps are happy - lazy create the list
        List<ActivityManager.ProcessErrorStateInfo> errList = null;

        final boolean allUsers = ActivityManager.checkUidPermission(
                android.Manifest.permission.INTERACT_ACROSS_USERS_FULL,
                Binder.getCallingUid()) == PackageManager.PERMISSION_GRANTED;
        int userId = UserHandle.getUserId(Binder.getCallingUid());

        synchronized (this) {

            // iterate across all processes
            for (int i=mLruProcesses.size()-1; i>=0; i--) {
                ProcessRecord app = mLruProcesses.get(i);
                if (!allUsers && app.userId != userId) {
                    continue;
                }
                if ((app.thread != null) && (app.crashing || app.notResponding)) {
                    // This one's in trouble, so we'll generate a report for it
                    // crashes are higher priority (in case there's a crash *and* an anr)
                    ActivityManager.ProcessErrorStateInfo report = null;
                    if (app.crashing) {
                        report = app.crashingReport;
                    } else if (app.notResponding) {
                        report = app.notRespondingReport;
                    }
                    
                    if (report != null) {
                        if (errList == null) {
                            errList = new ArrayList<ActivityManager.ProcessErrorStateInfo>(1);
                        }
                        errList.add(report);
                    } else {
                        Slog.w(TAG, "Missing app error report, app = " + app.processName + 
                                " crashing = " + app.crashing +
                                " notResponding = " + app.notResponding);
                    }
                }
            }
        }

        return errList;
    }

    static int oomAdjToImportance(int adj, ActivityManager.RunningAppProcessInfo currApp) {
        if (adj >= ProcessList.HIDDEN_APP_MIN_ADJ) {
            if (currApp != null) {
                currApp.lru = adj - ProcessList.HIDDEN_APP_MIN_ADJ + 1;
            }
            return ActivityManager.RunningAppProcessInfo.IMPORTANCE_BACKGROUND;
        } else if (adj >= ProcessList.SERVICE_B_ADJ) {
            return ActivityManager.RunningAppProcessInfo.IMPORTANCE_SERVICE;
        } else if (adj >= ProcessList.HOME_APP_ADJ) {
            if (currApp != null) {
                currApp.lru = 0;
            }
            return ActivityManager.RunningAppProcessInfo.IMPORTANCE_BACKGROUND;
        } else if (adj >= ProcessList.SERVICE_ADJ) {
            return ActivityManager.RunningAppProcessInfo.IMPORTANCE_SERVICE;
        } else if (adj >= ProcessList.HEAVY_WEIGHT_APP_ADJ) {
            return ActivityManager.RunningAppProcessInfo.IMPORTANCE_CANT_SAVE_STATE;
        } else if (adj >= ProcessList.PERCEPTIBLE_APP_ADJ) {
            return ActivityManager.RunningAppProcessInfo.IMPORTANCE_PERCEPTIBLE;
        } else if (adj >= ProcessList.VISIBLE_APP_ADJ) {
            return ActivityManager.RunningAppProcessInfo.IMPORTANCE_VISIBLE;
        } else {
            return ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND;
        }
    }

    private void fillInProcMemInfo(ProcessRecord app,
            ActivityManager.RunningAppProcessInfo outInfo) {
        outInfo.pid = app.pid;
        outInfo.uid = app.info.uid;
        if (mHeavyWeightProcess == app) {
            outInfo.flags |= ActivityManager.RunningAppProcessInfo.FLAG_CANT_SAVE_STATE;
        }
        if (app.persistent) {
            outInfo.flags |= ActivityManager.RunningAppProcessInfo.FLAG_PERSISTENT;
        }
        if (app.hasActivities) {
            outInfo.flags |= ActivityManager.RunningAppProcessInfo.FLAG_HAS_ACTIVITIES;
        }
        outInfo.lastTrimLevel = app.trimMemoryLevel;
        int adj = app.curAdj;
        outInfo.importance = oomAdjToImportance(adj, outInfo);
        outInfo.importanceReasonCode = app.adjTypeCode;
    }

    public List<ActivityManager.RunningAppProcessInfo> getRunningAppProcesses() {
        enforceNotIsolatedCaller("getRunningAppProcesses");
        // Lazy instantiation of list
        List<ActivityManager.RunningAppProcessInfo> runList = null;
        final boolean allUsers = ActivityManager.checkUidPermission(
                android.Manifest.permission.INTERACT_ACROSS_USERS_FULL,
                Binder.getCallingUid()) == PackageManager.PERMISSION_GRANTED;
        int userId = UserHandle.getUserId(Binder.getCallingUid());
        synchronized (this) {
            // Iterate across all processes
            for (int i=mLruProcesses.size()-1; i>=0; i--) {
                ProcessRecord app = mLruProcesses.get(i);
                if (!allUsers && app.userId != userId) {
                    continue;
                }
                if ((app.thread != null) && (!app.crashing && !app.notResponding)) {
                    // Generate process state info for running application
                    ActivityManager.RunningAppProcessInfo currApp = 
                        new ActivityManager.RunningAppProcessInfo(app.processName,
                                app.pid, app.getPackageList());
                    fillInProcMemInfo(app, currApp);
                    if (app.adjSource instanceof ProcessRecord) {
                        currApp.importanceReasonPid = ((ProcessRecord)app.adjSource).pid;
                        currApp.importanceReasonImportance = oomAdjToImportance(
                                app.adjSourceOom, null);
                    } else if (app.adjSource instanceof ActivityRecord) {
                        ActivityRecord r = (ActivityRecord)app.adjSource;
                        if (r.app != null) currApp.importanceReasonPid = r.app.pid;
                    }
                    if (app.adjTarget instanceof ComponentName) {
                        currApp.importanceReasonComponent = (ComponentName)app.adjTarget;
                    }
                    //Slog.v(TAG, "Proc " + app.processName + ": imp=" + currApp.importance
                    //        + " lru=" + currApp.lru);
                    if (runList == null) {
                        runList = new ArrayList<ActivityManager.RunningAppProcessInfo>();
                    }
                    runList.add(currApp);
                }
            }
        }
        return runList;
    }

    public List<ApplicationInfo> getRunningExternalApplications() {
        enforceNotIsolatedCaller("getRunningExternalApplications");
        List<ActivityManager.RunningAppProcessInfo> runningApps = getRunningAppProcesses();
        List<ApplicationInfo> retList = new ArrayList<ApplicationInfo>();
        if (runningApps != null && runningApps.size() > 0) {
            Set<String> extList = new HashSet<String>();
            for (ActivityManager.RunningAppProcessInfo app : runningApps) {
                if (app.pkgList != null) {
                    for (String pkg : app.pkgList) {
                        extList.add(pkg);
                    }
                }
            }
            IPackageManager pm = AppGlobals.getPackageManager();
            for (String pkg : extList) {
                try {
                    ApplicationInfo info = pm.getApplicationInfo(pkg, 0, UserHandle.getCallingUserId());
                    if ((info.flags & ApplicationInfo.FLAG_EXTERNAL_STORAGE) != 0) {
                        retList.add(info);
                    }
                } catch (RemoteException e) {
                }
            }
        }
        return retList;
    }

    @Override
    public void getMyMemoryState(ActivityManager.RunningAppProcessInfo outInfo) {
        enforceNotIsolatedCaller("getMyMemoryState");
        synchronized (this) {
            ProcessRecord proc;
            synchronized (mPidsSelfLocked) {
                proc = mPidsSelfLocked.get(Binder.getCallingPid());
            }
            fillInProcMemInfo(proc, outInfo);
        }
    }

    @Override
    protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
        if (checkCallingPermission(android.Manifest.permission.DUMP)
                != PackageManager.PERMISSION_GRANTED) {
            pw.println("Permission Denial: can't dump ActivityManager from from pid="
                    + Binder.getCallingPid()
                    + ", uid=" + Binder.getCallingUid()
                    + " without permission "
                    + android.Manifest.permission.DUMP);
            return;
        }

        boolean dumpAll = false;
        boolean dumpClient = false;
        String dumpPackage = null;
        
        int opti = 0;
        while (opti < args.length) {
            String opt = args[opti];
            if (opt == null || opt.length() <= 0 || opt.charAt(0) != '-') {
                break;
            }
            opti++;
            if ("-a".equals(opt)) {
                dumpAll = true;
            } else if ("-c".equals(opt)) {
                dumpClient = true;
            } else if ("-h".equals(opt)) {
                pw.println("Activity manager dump options:");
                pw.println("  [-a] [-c] [-h] [cmd] ...");
                pw.println("  cmd may be one of:");
                pw.println("    a[ctivities]: activity stack state");
                pw.println("    b[roadcasts] [PACKAGE_NAME] [history [-s]]: broadcast state");
                pw.println("    i[ntents] [PACKAGE_NAME]: pending intent state");
                pw.println("    p[rocesses] [PACKAGE_NAME]: process state");
                pw.println("    o[om]: out of memory management");
                pw.println("    prov[iders] [COMP_SPEC ...]: content provider state");
                pw.println("    provider [COMP_SPEC]: provider client-side state");
                pw.println("    s[ervices] [COMP_SPEC ...]: service state");
                pw.println("    service [COMP_SPEC]: service client-side state");
                pw.println("    package [PACKAGE_NAME]: all state related to given package");
                pw.println("    all: dump all activities");
                pw.println("    top: dump the top activity");
                pw.println("  cmd may also be a COMP_SPEC to dump activities.");
                pw.println("  COMP_SPEC may be a component name (com.foo/.myApp),");
                pw.println("    a partial substring in a component name, a");
                pw.println("    hex object identifier.");
                pw.println("  -a: include all available server state.");
                pw.println("  -c: include client state.");
                return;
            } else {
                pw.println("Unknown argument: " + opt + "; use -h for help");
            }
        }

        long origId = Binder.clearCallingIdentity();
        boolean more = false;
        // Is the caller requesting to dump a particular piece of data?
        if (opti < args.length) {
            String cmd = args[opti];
            opti++;
            if ("activities".equals(cmd) || "a".equals(cmd)) {
                synchronized (this) {
                    dumpActivitiesLocked(fd, pw, args, opti, true, dumpClient, null);
                }
            } else if ("broadcasts".equals(cmd) || "b".equals(cmd)) {
                String[] newArgs;
                String name;
                if (opti >= args.length) {
                    name = null;
                    newArgs = EMPTY_STRING_ARRAY;
                } else {
                    name = args[opti];
                    opti++;
                    newArgs = new String[args.length - opti];
                    if (args.length > 2) System.arraycopy(args, opti, newArgs, 0,
                            args.length - opti);
                }
                synchronized (this) {
                    dumpBroadcastsLocked(fd, pw, args, opti, true, name);
                }
            } else if ("intents".equals(cmd) || "i".equals(cmd)) {
                String[] newArgs;
                String name;
                if (opti >= args.length) {
                    name = null;
                    newArgs = EMPTY_STRING_ARRAY;
                } else {
                    name = args[opti];
                    opti++;
                    newArgs = new String[args.length - opti];
                    if (args.length > 2) System.arraycopy(args, opti, newArgs, 0,
                            args.length - opti);
                }
                synchronized (this) {
                    dumpPendingIntentsLocked(fd, pw, args, opti, true, name);
                }
            } else if ("processes".equals(cmd) || "p".equals(cmd)) {
                String[] newArgs;
                String name;
                if (opti >= args.length) {
                    name = null;
                    newArgs = EMPTY_STRING_ARRAY;
                } else {
                    name = args[opti];
                    opti++;
                    newArgs = new String[args.length - opti];
                    if (args.length > 2) System.arraycopy(args, opti, newArgs, 0,
                            args.length - opti);
                }
                synchronized (this) {
                    dumpProcessesLocked(fd, pw, args, opti, true, name);
                }
            } else if ("oom".equals(cmd) || "o".equals(cmd)) {
                synchronized (this) {
                    dumpOomLocked(fd, pw, args, opti, true);
                }
            } else if ("provider".equals(cmd)) {
                String[] newArgs;
                String name;
                if (opti >= args.length) {
                    name = null;
                    newArgs = EMPTY_STRING_ARRAY;
                } else {
                    name = args[opti];
                    opti++;
                    newArgs = new String[args.length - opti];
                    if (args.length > 2) System.arraycopy(args, opti, newArgs, 0, args.length - opti);
                }
                if (!dumpProvider(fd, pw, name, newArgs, 0, dumpAll)) {
                    pw.println("No providers match: " + name);
                    pw.println("Use -h for help.");
                }
            } else if ("providers".equals(cmd) || "prov".equals(cmd)) {
                synchronized (this) {
                    dumpProvidersLocked(fd, pw, args, opti, true, null);
                }
            } else if ("service".equals(cmd)) {
                String[] newArgs;
                String name;
                if (opti >= args.length) {
                    name = null;
                    newArgs = EMPTY_STRING_ARRAY;
                } else {
                    name = args[opti];
                    opti++;
                    newArgs = new String[args.length - opti];
                    if (args.length > 2) System.arraycopy(args, opti, newArgs, 0,
                            args.length - opti);
                }
                if (!mServices.dumpService(fd, pw, name, newArgs, 0, dumpAll)) {
                    pw.println("No services match: " + name);
                    pw.println("Use -h for help.");
                }
            } else if ("package".equals(cmd)) {
                String[] newArgs;
                if (opti >= args.length) {
                    pw.println("package: no package name specified");
                    pw.println("Use -h for help.");
                } else {
                    dumpPackage = args[opti];
                    opti++;
                    newArgs = new String[args.length - opti];
                    if (args.length > 2) System.arraycopy(args, opti, newArgs, 0,
                            args.length - opti);
                    args = newArgs;
                    opti = 0;
                    more = true;
                }
            } else if ("services".equals(cmd) || "s".equals(cmd)) {
                synchronized (this) {
                    mServices.dumpServicesLocked(fd, pw, args, opti, true, dumpClient, null);
                }
            } else {
                // Dumping a single activity?
                if (!dumpActivity(fd, pw, cmd, args, opti, dumpAll)) {
                    pw.println("Bad activity command, or no activities match: " + cmd);
                    pw.println("Use -h for help.");
                }
            }
            if (!more) {
                Binder.restoreCallingIdentity(origId);
                return;
            }
        }

        // No piece of data specified, dump everything.
        synchronized (this) {
            boolean needSep;
            needSep = dumpPendingIntentsLocked(fd, pw, args, opti, dumpAll, dumpPackage);
            if (needSep) {
                pw.println(" ");
            }
            if (dumpAll) {
                pw.println("-------------------------------------------------------------------------------");
            }
            needSep = dumpBroadcastsLocked(fd, pw, args, opti, dumpAll, dumpPackage);
            if (needSep) {
                pw.println(" ");
            }
            if (dumpAll) {
                pw.println("-------------------------------------------------------------------------------");
            }
            needSep = dumpProvidersLocked(fd, pw, args, opti, dumpAll, dumpPackage);
            if (needSep) {
                pw.println(" ");
            }
            if (dumpAll) {
                pw.println("-------------------------------------------------------------------------------");
            }
            needSep = mServices.dumpServicesLocked(fd, pw, args, opti, dumpAll, dumpClient, dumpPackage);
            if (needSep) {
                pw.println(" ");
            }
            if (dumpAll) {
                pw.println("-------------------------------------------------------------------------------");
            }
            needSep = dumpActivitiesLocked(fd, pw, args, opti, dumpAll, dumpClient, dumpPackage);
            if (needSep) {
                pw.println(" ");
            }
            if (dumpAll) {
                pw.println("-------------------------------------------------------------------------------");
            }
            dumpProcessesLocked(fd, pw, args, opti, dumpAll, dumpPackage);
        }
        Binder.restoreCallingIdentity(origId);
    }

    boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, String[] args,
            int opti, boolean dumpAll, boolean dumpClient, String dumpPackage) {
        pw.println("ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)");
        pw.println("  Main stack:");
        dumpHistoryList(fd, pw, mMainStack.mHistory, "  ", "Hist", true, !dumpAll, dumpClient,
                dumpPackage);
        pw.println(" ");
        pw.println("  Running activities (most recent first):");
        dumpHistoryList(fd, pw, mMainStack.mLRUActivities, "  ", "Run", false, !dumpAll, false,
                dumpPackage);
        if (mMainStack.mWaitingVisibleActivities.size() > 0) {
            pw.println(" ");
            pw.println("  Activities waiting for another to become visible:");
            dumpHistoryList(fd, pw, mMainStack.mWaitingVisibleActivities, "  ", "Wait", false,
                    !dumpAll, false, dumpPackage);
        }
        if (mMainStack.mStoppingActivities.size() > 0) {
            pw.println(" ");
            pw.println("  Activities waiting to stop:");
            dumpHistoryList(fd, pw, mMainStack.mStoppingActivities, "  ", "Stop", false,
                    !dumpAll, false, dumpPackage);
        }
        if (mMainStack.mGoingToSleepActivities.size() > 0) {
            pw.println(" ");
            pw.println("  Activities waiting to sleep:");
            dumpHistoryList(fd, pw, mMainStack.mGoingToSleepActivities, "  ", "Sleep", false,
                    !dumpAll, false, dumpPackage);
        }
        if (mMainStack.mFinishingActivities.size() > 0) {
            pw.println(" ");
            pw.println("  Activities waiting to finish:");
            dumpHistoryList(fd, pw, mMainStack.mFinishingActivities, "  ", "Fin", false,
                    !dumpAll, false, dumpPackage);
        }

        pw.println(" ");
        if (mMainStack.mPausingActivity != null) {
            pw.println("  mPausingActivity: " + mMainStack.mPausingActivity);
        }
        pw.println("  mResumedActivity: " + mMainStack.mResumedActivity);
        pw.println("  mFocusedActivity: " + mFocusedActivity);
        if (dumpAll) {
            pw.println("  mLastPausedActivity: " + mMainStack.mLastPausedActivity);
            pw.println("  mSleepTimeout: " + mMainStack.mSleepTimeout);
            pw.println("  mDismissKeyguardOnNextActivity: "
                    + mMainStack.mDismissKeyguardOnNextActivity);
        }

        if (mRecentTasks.size() > 0) {
            pw.println();
            pw.println("  Recent tasks:");

            final int N = mRecentTasks.size();
            for (int i=0; i<N; i++) {
                TaskRecord tr = mRecentTasks.get(i);
                if (dumpPackage != null) {
                    if (tr.realActivity == null ||
                            !dumpPackage.equals(tr.realActivity)) {
                        continue;
                    }
                }
                pw.print("  * Recent #"); pw.print(i); pw.print(": ");
                        pw.println(tr);
                if (dumpAll) {
                    mRecentTasks.get(i).dump(pw, "    ");
                }
            }
        }
        
        if (dumpAll) {
            pw.println(" ");
            pw.println("  mCurTask: " + mCurTask);
        }
        
        return true;
    }

    boolean dumpProcessesLocked(FileDescriptor fd, PrintWriter pw, String[] args,
            int opti, boolean dumpAll, String dumpPackage) {
        boolean needSep = false;
        int numPers = 0;

        pw.println("ACTIVITY MANAGER RUNNING PROCESSES (dumpsys activity processes)");

        if (dumpAll) {
            for (SparseArray<ProcessRecord> procs : mProcessNames.getMap().values()) {
                final int NA = procs.size();
                for (int ia=0; ia<NA; ia++) {
                    ProcessRecord r = procs.valueAt(ia);
                    if (dumpPackage != null && !dumpPackage.equals(r.info.packageName)) {
                        continue;
                    }
                    if (!needSep) {
                        pw.println("  All known processes:");
                        needSep = true;
                    }
                    pw.print(r.persistent ? "  *PERS*" : "  *APP*");
                        pw.print(" UID "); pw.print(procs.keyAt(ia));
                        pw.print(" "); pw.println(r);
                    r.dump(pw, "    ");
                    if (r.persistent) {
                        numPers++;
                    }
                }
            }
        }

        if (mIsolatedProcesses.size() > 0) {
            if (needSep) pw.println(" ");
            needSep = true;
            pw.println("  Isolated process list (sorted by uid):");
            for (int i=0; i<mIsolatedProcesses.size(); i++) {
                ProcessRecord r = mIsolatedProcesses.valueAt(i);
                if (dumpPackage != null && !dumpPackage.equals(r.info.packageName)) {
                    continue;
                }
                pw.println(String.format("%sIsolated #%2d: %s",
                        "    ", i, r.toString()));
            }
        }

        if (mLruProcesses.size() > 0) {
            if (needSep) pw.println(" ");
            needSep = true;
            pw.println("  Process LRU list (sorted by oom_adj):");
            dumpProcessOomList(pw, this, mLruProcesses, "    ",
                    "Proc", "PERS", false, dumpPackage);
            needSep = true;
        }

        if (dumpAll) {
            synchronized (mPidsSelfLocked) {
                boolean printed = false;
                for (int i=0; i<mPidsSelfLocked.size(); i++) {
                    ProcessRecord r = mPidsSelfLocked.valueAt(i);
                    if (dumpPackage != null && !dumpPackage.equals(r.info.packageName)) {
                        continue;
                    }
                    if (!printed) {
                        if (needSep) pw.println(" ");
                        needSep = true;
                        pw.println("  PID mappings:");
                        printed = true;
                    }
                    pw.print("    PID #"); pw.print(mPidsSelfLocked.keyAt(i));
                        pw.print(": "); pw.println(mPidsSelfLocked.valueAt(i));
                }
            }
        }
        
        if (mForegroundProcesses.size() > 0) {
            synchronized (mPidsSelfLocked) {
                boolean printed = false;
                for (int i=0; i<mForegroundProcesses.size(); i++) {
                    ProcessRecord r = mPidsSelfLocked.get( 
                            mForegroundProcesses.valueAt(i).pid);
                    if (dumpPackage != null && (r == null
                            || !dumpPackage.equals(r.info.packageName))) {
                        continue;
                    }
                    if (!printed) {
                        if (needSep) pw.println(" ");
                        needSep = true;
                        pw.println("  Foreground Processes:");
                        printed = true;
                    }
                    pw.print("    PID #"); pw.print(mForegroundProcesses.keyAt(i));
                            pw.print(": "); pw.println(mForegroundProcesses.valueAt(i));
                }
            }
        }
        
        if (mPersistentStartingProcesses.size() > 0) {
            if (needSep) pw.println(" ");
            needSep = true;
            pw.println("  Persisent processes that are starting:");
            dumpProcessList(pw, this, mPersistentStartingProcesses, "    ",
                    "Starting Norm", "Restarting PERS", dumpPackage);
        }

        if (mRemovedProcesses.size() > 0) {
            if (needSep) pw.println(" ");
            needSep = true;
            pw.println("  Processes that are being removed:");
            dumpProcessList(pw, this, mRemovedProcesses, "    ",
                    "Removed Norm", "Removed PERS", dumpPackage);
        }
        
        if (mProcessesOnHold.size() > 0) {
            if (needSep) pw.println(" ");
            needSep = true;
            pw.println("  Processes that are on old until the system is ready:");
            dumpProcessList(pw, this, mProcessesOnHold, "    ",
                    "OnHold Norm", "OnHold PERS", dumpPackage);
        }

        needSep = dumpProcessesToGc(fd, pw, args, opti, needSep, dumpAll, dumpPackage);
        
        if (mProcessCrashTimes.getMap().size() > 0) {
            boolean printed = false;
            long now = SystemClock.uptimeMillis();
            for (Map.Entry<String, SparseArray<Long>> procs
                    : mProcessCrashTimes.getMap().entrySet()) {
                String pname = procs.getKey();
                SparseArray<Long> uids = procs.getValue();
                final int N = uids.size();
                for (int i=0; i<N; i++) {
                    int puid = uids.keyAt(i);
                    ProcessRecord r = mProcessNames.get(pname, puid);
                    if (dumpPackage != null && (r == null
                            || !dumpPackage.equals(r.info.packageName))) {
                        continue;
                    }
                    if (!printed) {
                        if (needSep) pw.println(" ");
                        needSep = true;
                        pw.println("  Time since processes crashed:");
                        printed = true;
                    }
                    pw.print("    Process "); pw.print(pname);
                            pw.print(" uid "); pw.print(puid);
                            pw.print(": last crashed ");
                            TimeUtils.formatDuration(now-uids.valueAt(i), pw);
                            pw.println(" ago");
                }
            }
        }

        if (mBadProcesses.getMap().size() > 0) {
            boolean printed = false;
            for (Map.Entry<String, SparseArray<Long>> procs
                    : mBadProcesses.getMap().entrySet()) {
                String pname = procs.getKey();
                SparseArray<Long> uids = procs.getValue();
                final int N = uids.size();
                for (int i=0; i<N; i++) {
                    int puid = uids.keyAt(i);
                    ProcessRecord r = mProcessNames.get(pname, puid);
                    if (dumpPackage != null && (r == null
                            || !dumpPackage.equals(r.info.packageName))) {
                        continue;
                    }
                    if (!printed) {
                        if (needSep) pw.println(" ");
                        needSep = true;
                        pw.println("  Bad processes:");
                    }
                    pw.print("    Bad process "); pw.print(pname);
                            pw.print(" uid "); pw.print(puid);
                            pw.print(": crashed at time ");
                            pw.println(uids.valueAt(i));
                }
            }
        }

        pw.println();
        pw.println("  mStartedUsers:");
        for (int i=0; i<mStartedUsers.size(); i++) {
            UserStartedState uss = mStartedUsers.valueAt(i);
            pw.print("    User #"); pw.print(uss.mHandle.getIdentifier());
                    pw.print(": "); uss.dump("", pw);
        }
        pw.print("  mStartedUserArray: [");
        for (int i=0; i<mStartedUserArray.length; i++) {
            if (i > 0) pw.print(", ");
            pw.print(mStartedUserArray[i]);
        }
        pw.println("]");
        pw.print("  mUserLru: [");
        for (int i=0; i<mUserLru.size(); i++) {
            if (i > 0) pw.print(", ");
            pw.print(mUserLru.get(i));
        }
        pw.println("]");
        if (dumpAll) {
            pw.print("  mStartedUserArray: "); pw.println(Arrays.toString(mStartedUserArray));
        }
        pw.println("  mHomeProcess: " + mHomeProcess);
        pw.println("  mPreviousProcess: " + mPreviousProcess);
        if (dumpAll) {
            StringBuilder sb = new StringBuilder(128);
            sb.append("  mPreviousProcessVisibleTime: ");
            TimeUtils.formatDuration(mPreviousProcessVisibleTime, sb);
            pw.println(sb);
        }
        if (mHeavyWeightProcess != null) {
            pw.println("  mHeavyWeightProcess: " + mHeavyWeightProcess);
        }
        pw.println("  mConfiguration: " + mConfiguration);
        if (dumpAll) {
            pw.println("  mConfigWillChange: " + mMainStack.mConfigWillChange);
            if (mCompatModePackages.getPackages().size() > 0) {
                boolean printed = false;
                for (Map.Entry<String, Integer> entry
                        : mCompatModePackages.getPackages().entrySet()) {
                    String pkg = entry.getKey();
                    int mode = entry.getValue();
                    if (dumpPackage != null && !dumpPackage.equals(pkg)) {
                        continue;
                    }
                    if (!printed) {
                        pw.println("  mScreenCompatPackages:");
                        printed = true;
                    }
                    pw.print("    "); pw.print(pkg); pw.print(": ");
                            pw.print(mode); pw.println();
                }
            }
        }
        if (mSleeping || mWentToSleep || mLockScreenShown) {
            pw.println("  mSleeping=" + mSleeping + " mWentToSleep=" + mWentToSleep
                    + " mLockScreenShown " + mLockScreenShown);
        }
        if (mShuttingDown) {
            pw.println("  mShuttingDown=" + mShuttingDown);
        }
        if (mDebugApp != null || mOrigDebugApp != null || mDebugTransient
                || mOrigWaitForDebugger) {
            pw.println("  mDebugApp=" + mDebugApp + "/orig=" + mOrigDebugApp
                    + " mDebugTransient=" + mDebugTransient
                    + " mOrigWaitForDebugger=" + mOrigWaitForDebugger);
        }
        if (mOpenGlTraceApp != null) {
            pw.println("  mOpenGlTraceApp=" + mOpenGlTraceApp);
        }
        if (mProfileApp != null || mProfileProc != null || mProfileFile != null
                || mProfileFd != null) {
            pw.println("  mProfileApp=" + mProfileApp + " mProfileProc=" + mProfileProc);
            pw.println("  mProfileFile=" + mProfileFile + " mProfileFd=" + mProfileFd);
            pw.println("  mProfileType=" + mProfileType + " mAutoStopProfiler="
                    + mAutoStopProfiler);
        }
        if (mAlwaysFinishActivities || mController != null) {
            pw.println("  mAlwaysFinishActivities=" + mAlwaysFinishActivities
                    + " mController=" + mController);
        }
        if (dumpAll) {
            pw.println("  Total persistent processes: " + numPers);
            pw.println("  mStartRunning=" + mStartRunning
                    + " mProcessesReady=" + mProcessesReady
                    + " mSystemReady=" + mSystemReady);
            pw.println("  mBooting=" + mBooting
                    + " mBooted=" + mBooted
                    + " mFactoryTest=" + mFactoryTest);
            pw.print("  mLastPowerCheckRealtime=");
                    TimeUtils.formatDuration(mLastPowerCheckRealtime, pw);
                    pw.println("");
            pw.print("  mLastPowerCheckUptime=");
                    TimeUtils.formatDuration(mLastPowerCheckUptime, pw);
                    pw.println("");
            pw.println("  mGoingToSleep=" + mMainStack.mGoingToSleep);
            pw.println("  mLaunchingActivity=" + mMainStack.mLaunchingActivity);
            pw.println("  mAdjSeq=" + mAdjSeq + " mLruSeq=" + mLruSeq);
            pw.println("  mNumNonHiddenProcs=" + mNumNonHiddenProcs
                    + " mNumHiddenProcs=" + mNumHiddenProcs
                    + " mNumServiceProcs=" + mNumServiceProcs
                    + " mNewNumServiceProcs=" + mNewNumServiceProcs);
        }
        
        return true;
    }

    boolean dumpProcessesToGc(FileDescriptor fd, PrintWriter pw, String[] args,
            int opti, boolean needSep, boolean dumpAll, String dumpPackage) {
        if (mProcessesToGc.size() > 0) {
            boolean printed = false;
            long now = SystemClock.uptimeMillis();
            for (int i=0; i<mProcessesToGc.size(); i++) {
                ProcessRecord proc = mProcessesToGc.get(i);
                if (dumpPackage != null && !dumpPackage.equals(proc.info.packageName)) {
                    continue;
                }
                if (!printed) {
                    if (needSep) pw.println(" ");
                    needSep = true;
                    pw.println("  Processes that are waiting to GC:");
                    printed = true;
                }
                pw.print("    Process "); pw.println(proc);
                pw.print("      lowMem="); pw.print(proc.reportLowMemory);
                        pw.print(", last gced=");
                        pw.print(now-proc.lastRequestedGc);
                        pw.print(" ms ago, last lowMem=");
                        pw.print(now-proc.lastLowMemory);
                        pw.println(" ms ago");

            }
        }
        return needSep;
    }

    boolean dumpOomLocked(FileDescriptor fd, PrintWriter pw, String[] args,
            int opti, boolean dumpAll) {
        boolean needSep = false;

        if (mLruProcesses.size() > 0) {
            if (needSep) pw.println(" ");
            needSep = true;
            pw.println("  OOM levels:");
            pw.print("    SYSTEM_ADJ: "); pw.println(ProcessList.SYSTEM_ADJ);
            pw.print("    PERSISTENT_PROC_ADJ: "); pw.println(ProcessList.PERSISTENT_PROC_ADJ);
            pw.print("    FOREGROUND_APP_ADJ: "); pw.println(ProcessList.FOREGROUND_APP_ADJ);
            pw.print("    VISIBLE_APP_ADJ: "); pw.println(ProcessList.VISIBLE_APP_ADJ);
            pw.print("    PERCEPTIBLE_APP_ADJ: "); pw.println(ProcessList.PERCEPTIBLE_APP_ADJ);
            pw.print("    HEAVY_WEIGHT_APP_ADJ: "); pw.println(ProcessList.HEAVY_WEIGHT_APP_ADJ);
            pw.print("    BACKUP_APP_ADJ: "); pw.println(ProcessList.BACKUP_APP_ADJ);
            pw.print("    SERVICE_ADJ: "); pw.println(ProcessList.SERVICE_ADJ);
            pw.print("    HOME_APP_ADJ: "); pw.println(ProcessList.HOME_APP_ADJ);
            pw.print("    PREVIOUS_APP_ADJ: "); pw.println(ProcessList.PREVIOUS_APP_ADJ);
            pw.print("    SERVICE_B_ADJ: "); pw.println(ProcessList.SERVICE_B_ADJ);
            pw.print("    HIDDEN_APP_MIN_ADJ: "); pw.println(ProcessList.HIDDEN_APP_MIN_ADJ);
            pw.print("    HIDDEN_APP_MAX_ADJ: "); pw.println(ProcessList.HIDDEN_APP_MAX_ADJ);

            if (needSep) pw.println(" ");
            needSep = true;
            pw.println("  Process OOM control:");
            dumpProcessOomList(pw, this, mLruProcesses, "    ",
                    "Proc", "PERS", true, null);
            needSep = true;
        }

        needSep = dumpProcessesToGc(fd, pw, args, opti, needSep, dumpAll, null);

        pw.println();
        pw.println("  mHomeProcess: " + mHomeProcess);
        pw.println("  mPreviousProcess: " + mPreviousProcess);
        if (mHeavyWeightProcess != null) {
            pw.println("  mHeavyWeightProcess: " + mHeavyWeightProcess);
        }

        return true;
    }

    /**
     * There are three ways to call this:
     *  - no provider specified: dump all the providers
     *  - a flattened component name that matched an existing provider was specified as the
     *    first arg: dump that one provider
     *  - the first arg isn't the flattened component name of an existing provider:
     *    dump all providers whose component contains the first arg as a substring
     */
    protected boolean dumpProvider(FileDescriptor fd, PrintWriter pw, String name, String[] args,
            int opti, boolean dumpAll) {
        return mProviderMap.dumpProvider(fd, pw, name, args, opti, dumpAll);
    }

    static class ItemMatcher {
        ArrayList<ComponentName> components;
        ArrayList<String> strings;
        ArrayList<Integer> objects;
        boolean all;
        
        ItemMatcher() {
            all = true;
        }

        void build(String name) {
            ComponentName componentName = ComponentName.unflattenFromString(name);
            if (componentName != null) {
                if (components == null) {
                    components = new ArrayList<ComponentName>();
                }
                components.add(componentName);
                all = false;
            } else {
                int objectId = 0;
                // Not a '/' separated full component name; maybe an object ID?
                try {
                    objectId = Integer.parseInt(name, 16);
                    if (objects == null) {
                        objects = new ArrayList<Integer>();
                    }
                    objects.add(objectId);
                    all = false;
                } catch (RuntimeException e) {
                    // Not an integer; just do string match.
                    if (strings == null) {
                        strings = new ArrayList<String>();
                    }
                    strings.add(name);
                    all = false;
                }
            }
        }

        int build(String[] args, int opti) {
            for (; opti<args.length; opti++) {
                String name = args[opti];
                if ("--".equals(name)) {
                    return opti+1;
                }
                build(name);
            }
            return opti;
        }

        boolean match(Object object, ComponentName comp) {
            if (all) {
                return true;
            }
            if (components != null) {
                for (int i=0; i<components.size(); i++) {
                    if (components.get(i).equals(comp)) {
                        return true;
                    }
                }
            }
            if (objects != null) {
                for (int i=0; i<objects.size(); i++) {
                    if (System.identityHashCode(object) == objects.get(i)) {
                        return true;
                    }
                }
            }
            if (strings != null) {
                String flat = comp.flattenToString();
                for (int i=0; i<strings.size(); i++) {
                    if (flat.contains(strings.get(i))) {
                        return true;
                    }
                }
            }
            return false;
        }
    }

    /**
     * There are three things that cmd can be:
     *  - a flattened component name that matches an existing activity
     *  - the cmd arg isn't the flattened component name of an existing activity:
     *    dump all activity whose component contains the cmd as a substring
     *  - A hex number of the ActivityRecord object instance.
     */
    protected boolean dumpActivity(FileDescriptor fd, PrintWriter pw, String name, String[] args,
            int opti, boolean dumpAll) {
        ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>();

        if ("all".equals(name)) {
            synchronized (this) {
                for (ActivityRecord r1 : (ArrayList<ActivityRecord>)mMainStack.mHistory) {
                    activities.add(r1);
                }
            }
        } else if ("top".equals(name)) {
            synchronized (this) {
                final int N = mMainStack.mHistory.size();
                if (N > 0) {
                    activities.add((ActivityRecord)mMainStack.mHistory.get(N-1));
                }
            }
        } else {
            ItemMatcher matcher = new ItemMatcher();
            matcher.build(name);

            synchronized (this) {
                for (ActivityRecord r1 : (ArrayList<ActivityRecord>)mMainStack.mHistory) {
                    if (matcher.match(r1, r1.intent.getComponent())) {
                        activities.add(r1);
                    }
                }
            }
        }

        if (activities.size() <= 0) {
            return false;
        }

        String[] newArgs = new String[args.length - opti];
        if (args.length > 2) System.arraycopy(args, opti, newArgs, 0, args.length - opti);

        TaskRecord lastTask = null;
        boolean needSep = false;
        for (int i=activities.size()-1; i>=0; i--) {
            ActivityRecord r = (ActivityRecord)activities.get(i);
            if (needSep) {
                pw.println();
            }
            needSep = true;
            synchronized (this) {
                if (lastTask != r.task) {
                    lastTask = r.task;
                    pw.print("TASK "); pw.print(lastTask.affinity);
                            pw.print(" id="); pw.println(lastTask.taskId);
                    if (dumpAll) {
                        lastTask.dump(pw, "  ");
                    }
                }
            }
            dumpActivity("  ", fd, pw, activities.get(i), newArgs, dumpAll);
        }
        return true;
    }

    /**
     * Invokes IApplicationThread.dumpActivity() on the thread of the specified activity if
     * there is a thread associated with the activity.
     */
    private void dumpActivity(String prefix, FileDescriptor fd, PrintWriter pw,
            final ActivityRecord r, String[] args, boolean dumpAll) {
        String innerPrefix = prefix + "  ";
        synchronized (this) {
            pw.print(prefix); pw.print("ACTIVITY "); pw.print(r.shortComponentName);
                    pw.print(" "); pw.print(Integer.toHexString(System.identityHashCode(r)));
                    pw.print(" pid=");
                    if (r.app != null) pw.println(r.app.pid);
                    else pw.println("(not running)");
            if (dumpAll) {
                r.dump(pw, innerPrefix);
            }
        }
        if (r.app != null && r.app.thread != null) {
            // flush anything that is already in the PrintWriter since the thread is going
            // to write to the file descriptor directly
            pw.flush();
            try {
                TransferPipe tp = new TransferPipe();
                try {
                    r.app.thread.dumpActivity(tp.getWriteFd().getFileDescriptor(),
                            r.appToken, innerPrefix, args);
                    tp.go(fd);
                } finally {
                    tp.kill();
                }
            } catch (IOException e) {
                pw.println(innerPrefix + "Failure while dumping the activity: " + e);
            } catch (RemoteException e) {
                pw.println(innerPrefix + "Got a RemoteException while dumping the activity");
            }
        }
    }

    boolean dumpBroadcastsLocked(FileDescriptor fd, PrintWriter pw, String[] args,
            int opti, boolean dumpAll, String dumpPackage) {
        boolean needSep = false;
        boolean onlyHistory = false;

        if ("history".equals(dumpPackage)) {
            if (opti < args.length && "-s".equals(args[opti])) {
                dumpAll = false;
            }
            onlyHistory = true;
            dumpPackage = null;
        }

        pw.println("ACTIVITY MANAGER BROADCAST STATE (dumpsys activity broadcasts)");
        if (!onlyHistory && dumpAll) {
            if (mRegisteredReceivers.size() > 0) {
                boolean printed = false;
                Iterator it = mRegisteredReceivers.values().iterator();
                while (it.hasNext()) {
                    ReceiverList r = (ReceiverList)it.next();
                    if (dumpPackage != null && (r.app == null ||
                            !dumpPackage.equals(r.app.info.packageName))) {
                        continue;
                    }
                    if (!printed) {
                        pw.println("  Registered Receivers:");
                        needSep = true;
                        printed = true;
                    }
                    pw.print("  * "); pw.println(r);
                    r.dump(pw, "    ");
                }
            }

            if (mReceiverResolver.dump(pw, needSep ?
                    "\n  Receiver Resolver Table:" : "  Receiver Resolver Table:",
                    "    ", dumpPackage, false)) {
                needSep = true;
            }
        }

        for (BroadcastQueue q : mBroadcastQueues) {
            needSep = q.dumpLocked(fd, pw, args, opti, dumpAll, dumpPackage, needSep);
        }

        needSep = true;
        
        if (!onlyHistory && mStickyBroadcasts != null && dumpPackage == null) {
            for (int user=0; user<mStickyBroadcasts.size(); user++) {
                if (needSep) {
                    pw.println();
                }
                needSep = true;
                pw.print("  Sticky broadcasts for user ");
                        pw.print(mStickyBroadcasts.keyAt(user)); pw.println(":");
                StringBuilder sb = new StringBuilder(128);
                for (Map.Entry<String, ArrayList<Intent>> ent
                        : mStickyBroadcasts.valueAt(user).entrySet()) {
                    pw.print("  * Sticky action "); pw.print(ent.getKey());
                    if (dumpAll) {
                        pw.println(":");
                        ArrayList<Intent> intents = ent.getValue();
                        final int N = intents.size();
                        for (int i=0; i<N; i++) {
                            sb.setLength(0);
                            sb.append("    Intent: ");
                            intents.get(i).toShortString(sb, false, true, false, false);
                            pw.println(sb.toString());
                            Bundle bundle = intents.get(i).getExtras();
                            if (bundle != null) {
                                pw.print("      ");
                                pw.println(bundle.toString());
                            }
                        }
                    } else {
                        pw.println("");
                    }
                }
            }
        }
        
        if (!onlyHistory && dumpAll) {
            pw.println();
            for (BroadcastQueue queue : mBroadcastQueues) {
                pw.println("  mBroadcastsScheduled [" + queue.mQueueName + "]="
                        + queue.mBroadcastsScheduled);
            }
            pw.println("  mHandler:");
            mHandler.dump(new PrintWriterPrinter(pw), "    ");
            needSep = true;
        }
        
        return needSep;
    }

    boolean dumpProvidersLocked(FileDescriptor fd, PrintWriter pw, String[] args,
            int opti, boolean dumpAll, String dumpPackage) {
        boolean needSep = true;

        ItemMatcher matcher = new ItemMatcher();
        matcher.build(args, opti);

        pw.println("ACTIVITY MANAGER CONTENT PROVIDERS (dumpsys activity providers)");

        mProviderMap.dumpProvidersLocked(pw, dumpAll);

        if (mLaunchingProviders.size() > 0) {
            boolean printed = false;
            for (int i=mLaunchingProviders.size()-1; i>=0; i--) {
                ContentProviderRecord r = mLaunchingProviders.get(i);
                if (dumpPackage != null && !dumpPackage.equals(r.name.getPackageName())) {
                    continue;
                }
                if (!printed) {
                    if (needSep) pw.println(" ");
                    needSep = true;
                    pw.println("  Launching content providers:");
                    printed = true;
                }
                pw.print("  Launching #"); pw.print(i); pw.print(": ");
                        pw.println(r);
            }
        }

        if (mGrantedUriPermissions.size() > 0) {
            if (needSep) pw.println();
            needSep = true;
            pw.println("Granted Uri Permissions:");
            for (int i=0; i<mGrantedUriPermissions.size(); i++) {
                int uid = mGrantedUriPermissions.keyAt(i);
                HashMap<Uri, UriPermission> perms
                        = mGrantedUriPermissions.valueAt(i);
                pw.print("  * UID "); pw.print(uid);
                        pw.println(" holds:");
                for (UriPermission perm : perms.values()) {
                    pw.print("    "); pw.println(perm);
                    if (dumpAll) {
                        perm.dump(pw, "      ");
                    }
                }
            }
            needSep = true;
        }
        
        return needSep;
    }

    boolean dumpPendingIntentsLocked(FileDescriptor fd, PrintWriter pw, String[] args,
            int opti, boolean dumpAll, String dumpPackage) {
        boolean needSep = false;
        
        if (mIntentSenderRecords.size() > 0) {
            boolean printed = false;
            Iterator<WeakReference<PendingIntentRecord>> it
                    = mIntentSenderRecords.values().iterator();
            while (it.hasNext()) {
                WeakReference<PendingIntentRecord> ref = it.next();
                PendingIntentRecord rec = ref != null ? ref.get(): null;
                if (dumpPackage != null && (rec == null
                        || !dumpPackage.equals(rec.key.packageName))) {
                    continue;
                }
                if (!printed) {
                    pw.println("ACTIVITY MANAGER PENDING INTENTS (dumpsys activity intents)");
                    printed = true;
                }
                needSep = true;
                if (rec != null) {
                    pw.print("  * "); pw.println(rec);
                    if (dumpAll) {
                        rec.dump(pw, "    ");
                    }
                } else {
                    pw.print("  * "); pw.println(ref);
                }
            }
        }
        
        return needSep;
    }

    private static final void dumpHistoryList(FileDescriptor fd, PrintWriter pw, List list,
            String prefix, String label, boolean complete, boolean brief, boolean client,
            String dumpPackage) {
        TaskRecord lastTask = null;
        boolean needNL = false;
        final String innerPrefix = prefix + "      ";
        final String[] args = new String[0];
        for (int i=list.size()-1; i>=0; i--) {
            final ActivityRecord r = (ActivityRecord)list.get(i);
            if (dumpPackage != null && !dumpPackage.equals(r.packageName)) {
                continue;
            }
            final boolean full = !brief && (complete || !r.isInHistory());
            if (needNL) {
                pw.println(" ");
                needNL = false;
            }
            if (lastTask != r.task) {
                lastTask = r.task;
                pw.print(prefix);
                pw.print(full ? "* " : "  ");
                pw.println(lastTask);
                if (full) {
                    lastTask.dump(pw, prefix + "  ");
                } else if (complete) {
                    // Complete + brief == give a summary.  Isn't that obvious?!?
                    if (lastTask.intent != null) {
                        pw.print(prefix); pw.print("  ");
                                pw.println(lastTask.intent.toInsecureStringWithClip());
                    }
                }
            }
            pw.print(prefix); pw.print(full ? "  * " : "    "); pw.print(label);
            pw.print(" #"); pw.print(i); pw.print(": ");
            pw.println(r);
            if (full) {
                r.dump(pw, innerPrefix);
            } else if (complete) {
                // Complete + brief == give a summary.  Isn't that obvious?!?
                pw.print(innerPrefix); pw.println(r.intent.toInsecureString());
                if (r.app != null) {
                    pw.print(innerPrefix); pw.println(r.app);
                }
            }
            if (client && r.app != null && r.app.thread != null) {
                // flush anything that is already in the PrintWriter since the thread is going
                // to write to the file descriptor directly
                pw.flush();
                try {
                    TransferPipe tp = new TransferPipe();
                    try {
                        r.app.thread.dumpActivity(tp.getWriteFd().getFileDescriptor(),
                                r.appToken, innerPrefix, args);
                        // Short timeout, since blocking here can
                        // deadlock with the application.
                        tp.go(fd, 2000);
                    } finally {
                        tp.kill();
                    }
                } catch (IOException e) {
                    pw.println(innerPrefix + "Failure while dumping the activity: " + e);
                } catch (RemoteException e) {
                    pw.println(innerPrefix + "Got a RemoteException while dumping the activity");
                }
                needNL = true;
            }
        }
    }

    private static String buildOomTag(String prefix, String space, int val, int base) {
        if (val == base) {
            if (space == null) return prefix;
            return prefix + "  ";
        }
        return prefix + "+" + Integer.toString(val-base);
    }
    
    private static final int dumpProcessList(PrintWriter pw,
            ActivityManagerService service, List list,
            String prefix, String normalLabel, String persistentLabel,
            String dumpPackage) {
        int numPers = 0;
        final int N = list.size()-1;
        for (int i=N; i>=0; i--) {
            ProcessRecord r = (ProcessRecord)list.get(i);
            if (dumpPackage != null && !dumpPackage.equals(r.info.packageName)) {
                continue;
            }
            pw.println(String.format("%s%s #%2d: %s",
                    prefix, (r.persistent ? persistentLabel : normalLabel),
                    i, r.toString()));
            if (r.persistent) {
                numPers++;
            }
        }
        return numPers;
    }

    private static final boolean dumpProcessOomList(PrintWriter pw,
            ActivityManagerService service, List<ProcessRecord> origList,
            String prefix, String normalLabel, String persistentLabel,
            boolean inclDetails, String dumpPackage) {

        ArrayList<Pair<ProcessRecord, Integer>> list
                = new ArrayList<Pair<ProcessRecord, Integer>>(origList.size());
        for (int i=0; i<origList.size(); i++) {
            ProcessRecord r = origList.get(i);
            if (dumpPackage != null && !dumpPackage.equals(r.info.packageName)) {
                continue;
            }
            list.add(new Pair<ProcessRecord, Integer>(origList.get(i), i));
        }

        if (list.size() <= 0) {
            return false;
        }
 
        Comparator<Pair<ProcessRecord, Integer>> comparator
                = new Comparator<Pair<ProcessRecord, Integer>>() {
            @Override
            public int compare(Pair<ProcessRecord, Integer> object1,
                    Pair<ProcessRecord, Integer> object2) {
                if (object1.first.setAdj != object2.first.setAdj) {
                    return object1.first.setAdj > object2.first.setAdj ? -1 : 1;
                }
                if (object1.second.intValue() != object2.second.intValue()) {
                    return object1.second.intValue() > object2.second.intValue() ? -1 : 1;
                }
                return 0;
            }
        };

        Collections.sort(list, comparator);

        final long curRealtime = SystemClock.elapsedRealtime();
        final long realtimeSince = curRealtime - service.mLastPowerCheckRealtime;
        final long curUptime = SystemClock.uptimeMillis();
        final long uptimeSince = curUptime - service.mLastPowerCheckUptime;

        for (int i=list.size()-1; i>=0; i--) {
            ProcessRecord r = list.get(i).first;
            String oomAdj;
            if (r.setAdj >= ProcessList.HIDDEN_APP_MIN_ADJ) {
                oomAdj = buildOomTag("bak", "  ", r.setAdj, ProcessList.HIDDEN_APP_MIN_ADJ);
            } else if (r.setAdj >= ProcessList.SERVICE_B_ADJ) {
                oomAdj = buildOomTag("svcb ", null, r.setAdj, ProcessList.SERVICE_B_ADJ);
            } else if (r.setAdj >= ProcessList.PREVIOUS_APP_ADJ) {
                oomAdj = buildOomTag("prev ", null, r.setAdj, ProcessList.PREVIOUS_APP_ADJ);
            } else if (r.setAdj >= ProcessList.HOME_APP_ADJ) {
                oomAdj = buildOomTag("home ", null, r.setAdj, ProcessList.HOME_APP_ADJ);
            } else if (r.setAdj >= ProcessList.SERVICE_ADJ) {
                oomAdj = buildOomTag("svc  ", null, r.setAdj, ProcessList.SERVICE_ADJ);
            } else if (r.setAdj >= ProcessList.BACKUP_APP_ADJ) {
                oomAdj = buildOomTag("bkup ", null, r.setAdj, ProcessList.BACKUP_APP_ADJ);
            } else if (r.setAdj >= ProcessList.HEAVY_WEIGHT_APP_ADJ) {
                oomAdj = buildOomTag("hvy  ", null, r.setAdj, ProcessList.HEAVY_WEIGHT_APP_ADJ);
            } else if (r.setAdj >= ProcessList.PERCEPTIBLE_APP_ADJ) {
                oomAdj = buildOomTag("prcp ", null, r.setAdj, ProcessList.PERCEPTIBLE_APP_ADJ);
            } else if (r.setAdj >= ProcessList.VISIBLE_APP_ADJ) {
                oomAdj = buildOomTag("vis  ", null, r.setAdj, ProcessList.VISIBLE_APP_ADJ);
            } else if (r.setAdj >= ProcessList.FOREGROUND_APP_ADJ) {
                oomAdj = buildOomTag("fore ", null, r.setAdj, ProcessList.FOREGROUND_APP_ADJ);
            } else if (r.setAdj >= ProcessList.PERSISTENT_PROC_ADJ) {
                oomAdj = buildOomTag("pers ", null, r.setAdj, ProcessList.PERSISTENT_PROC_ADJ);
            } else if (r.setAdj >= ProcessList.SYSTEM_ADJ) {
                oomAdj = buildOomTag("sys  ", null, r.setAdj, ProcessList.SYSTEM_ADJ);
            } else {
                oomAdj = Integer.toString(r.setAdj);
            }
            String schedGroup;
            switch (r.setSchedGroup) {
                case Process.THREAD_GROUP_BG_NONINTERACTIVE:
                    schedGroup = "B";
                    break;
                case Process.THREAD_GROUP_DEFAULT:
                    schedGroup = "F";
                    break;
                default:
                    schedGroup = Integer.toString(r.setSchedGroup);
                    break;
            }
            String foreground;
            if (r.foregroundActivities) {
                foreground = "A";
            } else if (r.foregroundServices) {
                foreground = "S";
            } else {
                foreground = " ";
            }
            pw.println(String.format("%s%s #%2d: adj=%s/%s%s trm=%2d %s (%s)",
                    prefix, (r.persistent ? persistentLabel : normalLabel),
                    (origList.size()-1)-list.get(i).second, oomAdj, schedGroup,
                    foreground, r.trimMemoryLevel, r.toShortString(), r.adjType));
            if (r.adjSource != null || r.adjTarget != null) {
                pw.print(prefix);
                pw.print("    ");
                if (r.adjTarget instanceof ComponentName) {
                    pw.print(((ComponentName)r.adjTarget).flattenToShortString());
                } else if (r.adjTarget != null) {
                    pw.print(r.adjTarget.toString());
                } else {
                    pw.print("{null}");
                }
                pw.print("<=");
                if (r.adjSource instanceof ProcessRecord) {
                    pw.print("Proc{");
                    pw.print(((ProcessRecord)r.adjSource).toShortString());
                    pw.println("}");
                } else if (r.adjSource != null) {
                    pw.println(r.adjSource.toString());
                } else {
                    pw.println("{null}");
                }
            }
            if (inclDetails) {
                pw.print(prefix);
                pw.print("    ");
                pw.print("oom: max="); pw.print(r.maxAdj);
                pw.print(" hidden="); pw.print(r.hiddenAdj);
                pw.print(" client="); pw.print(r.clientHiddenAdj);
                pw.print(" empty="); pw.print(r.emptyAdj);
                pw.print(" curRaw="); pw.print(r.curRawAdj);
                pw.print(" setRaw="); pw.print(r.setRawAdj);
                pw.print(" cur="); pw.print(r.curAdj);
                pw.print(" set="); pw.println(r.setAdj);
                pw.print(prefix);
                pw.print("    ");
                pw.print("keeping="); pw.print(r.keeping);
                pw.print(" hidden="); pw.print(r.hidden);
                pw.print(" empty="); pw.print(r.empty);
                pw.print(" hasAboveClient="); pw.println(r.hasAboveClient);

                if (!r.keeping) {
                    if (r.lastWakeTime != 0) {
                        long wtime;
                        BatteryStatsImpl stats = service.mBatteryStatsService.getActiveStatistics();
                        synchronized (stats) {
                            wtime = stats.getProcessWakeTime(r.info.uid,
                                    r.pid, curRealtime);
                        }
                        long timeUsed = wtime - r.lastWakeTime;
                        pw.print(prefix);
                        pw.print("    ");
                        pw.print("keep awake over ");
                        TimeUtils.formatDuration(realtimeSince, pw);
                        pw.print(" used ");
                        TimeUtils.formatDuration(timeUsed, pw);
                        pw.print(" (");
                        pw.print((timeUsed*100)/realtimeSince);
                        pw.println("%)");
                    }
                    if (r.lastCpuTime != 0) {
                        long timeUsed = r.curCpuTime - r.lastCpuTime;
                        pw.print(prefix);
                        pw.print("    ");
                        pw.print("run cpu over ");
                        TimeUtils.formatDuration(uptimeSince, pw);
                        pw.print(" used ");
                        TimeUtils.formatDuration(timeUsed, pw);
                        pw.print(" (");
                        pw.print((timeUsed*100)/uptimeSince);
                        pw.println("%)");
                    }
                }
            }
        }
        return true;
    }

    ArrayList<ProcessRecord> collectProcesses(PrintWriter pw, int start, String[] args) {
        ArrayList<ProcessRecord> procs;
        synchronized (this) {
            if (args != null && args.length > start
                    && args[start].charAt(0) != '-') {
                procs = new ArrayList<ProcessRecord>();
                int pid = -1;
                try {
                    pid = Integer.parseInt(args[start]);
                } catch (NumberFormatException e) {

                }
                for (int i=mLruProcesses.size()-1; i>=0; i--) {
                    ProcessRecord proc = mLruProcesses.get(i);
                    if (proc.pid == pid) {
                        procs.add(proc);
                    } else if (proc.processName.equals(args[start])) {
                        procs.add(proc);
                    }
                }
                if (procs.size() <= 0) {
                    pw.println("No process found for: " + args[start]);
                    return null;
                }
            } else {
                procs = new ArrayList<ProcessRecord>(mLruProcesses);
            }
        }
        return procs;
    }

    final void dumpGraphicsHardwareUsage(FileDescriptor fd,
            PrintWriter pw, String[] args) {
        ArrayList<ProcessRecord> procs = collectProcesses(pw, 0, args);
        if (procs == null) {
            return;
        }

        long uptime = SystemClock.uptimeMillis();
        long realtime = SystemClock.elapsedRealtime();
        pw.println("Applications Graphics Acceleration Info:");
        pw.println("Uptime: " + uptime + " Realtime: " + realtime);
        
        for (int i = procs.size() - 1 ; i >= 0 ; i--) {
            ProcessRecord r = procs.get(i);
            if (r.thread != null) {
                pw.println("\n** Graphics info for pid " + r.pid + " [" + r.processName + "] **");
                pw.flush();
                try {
                    TransferPipe tp = new TransferPipe();
                    try {
                        r.thread.dumpGfxInfo(tp.getWriteFd().getFileDescriptor(), args);
                        tp.go(fd);
                    } finally {
                        tp.kill();
                    }
                } catch (IOException e) {
                    pw.println("Failure while dumping the app: " + r);
                    pw.flush();
                } catch (RemoteException e) {
                    pw.println("Got a RemoteException while dumping the app " + r);
                    pw.flush();
                }
            }
        }
    }

    final void dumpDbInfo(FileDescriptor fd, PrintWriter pw, String[] args) {
        ArrayList<ProcessRecord> procs = collectProcesses(pw, 0, args);
        if (procs == null) {
            return;
        }

        pw.println("Applications Database Info:");

        for (int i = procs.size() - 1 ; i >= 0 ; i--) {
            ProcessRecord r = procs.get(i);
            if (r.thread != null) {
                pw.println("\n** Database info for pid " + r.pid + " [" + r.processName + "] **");
                pw.flush();
                try {
                    TransferPipe tp = new TransferPipe();
                    try {
                        r.thread.dumpDbInfo(tp.getWriteFd().getFileDescriptor(), args);
                        tp.go(fd);
                    } finally {
                        tp.kill();
                    }
                } catch (IOException e) {
                    pw.println("Failure while dumping the app: " + r);
                    pw.flush();
                } catch (RemoteException e) {
                    pw.println("Got a RemoteException while dumping the app " + r);
                    pw.flush();
                }
            }
        }
    }

    final static class MemItem {
        final String label;
        final String shortLabel;
        final long pss;
        final int id;
        ArrayList<MemItem> subitems;

        public MemItem(String _label, String _shortLabel, long _pss, int _id) {
            label = _label;
            shortLabel = _shortLabel;
            pss = _pss;
            id = _id;
        }
    }

    static final void dumpMemItems(PrintWriter pw, String prefix, ArrayList<MemItem> items,
            boolean sort) {
        if (sort) {
            Collections.sort(items, new Comparator<MemItem>() {
                @Override
                public int compare(MemItem lhs, MemItem rhs) {
                    if (lhs.pss < rhs.pss) {
                        return 1;
                    } else if (lhs.pss > rhs.pss) {
                        return -1;
                    }
                    return 0;
                }
            });
        }

        for (int i=0; i<items.size(); i++) {
            MemItem mi = items.get(i);
            pw.print(prefix); pw.printf("%7d kB: ", mi.pss); pw.println(mi.label);
            if (mi.subitems != null) {
                dumpMemItems(pw, prefix + "           ", mi.subitems, true);
            }
        }
    }

    // These are in KB.
    static final long[] DUMP_MEM_BUCKETS = new long[] {
        5*1024, 7*1024, 10*1024, 15*1024, 20*1024, 30*1024, 40*1024, 80*1024,
        120*1024, 160*1024, 200*1024,
        250*1024, 300*1024, 350*1024, 400*1024, 500*1024, 600*1024, 800*1024,
        1*1024*1024, 2*1024*1024, 5*1024*1024, 10*1024*1024, 20*1024*1024
    };

    static final void appendMemBucket(StringBuilder out, long memKB, String label,
            boolean stackLike) {
        int start = label.lastIndexOf('.');
        if (start >= 0) start++;
        else start = 0;
        int end = label.length();
        for (int i=0; i<DUMP_MEM_BUCKETS.length; i++) {
            if (DUMP_MEM_BUCKETS[i] >= memKB) {
                long bucket = DUMP_MEM_BUCKETS[i]/1024;
                out.append(bucket);
                out.append(stackLike ? "MB." : "MB ");
                out.append(label, start, end);
                return;
            }
        }
        out.append(memKB/1024);
        out.append(stackLike ? "MB." : "MB ");
        out.append(label, start, end);
    }

    static final int[] DUMP_MEM_OOM_ADJ = new int[] {
            ProcessList.SYSTEM_ADJ, ProcessList.PERSISTENT_PROC_ADJ, ProcessList.FOREGROUND_APP_ADJ,
            ProcessList.VISIBLE_APP_ADJ, ProcessList.PERCEPTIBLE_APP_ADJ, ProcessList.HEAVY_WEIGHT_APP_ADJ,
            ProcessList.BACKUP_APP_ADJ, ProcessList.SERVICE_ADJ, ProcessList.HOME_APP_ADJ,
            ProcessList.PREVIOUS_APP_ADJ, ProcessList.SERVICE_B_ADJ, ProcessList.HIDDEN_APP_MAX_ADJ
    };
    static final String[] DUMP_MEM_OOM_LABEL = new String[] {
            "System", "Persistent", "Foreground",
            "Visible", "Perceptible", "Heavy Weight",
            "Backup", "A Services", "Home", "Previous",
            "B Services", "Background"
    };

    final void dumpApplicationMemoryUsage(FileDescriptor fd,
            PrintWriter pw, String prefix, String[] args, boolean brief,
            PrintWriter categoryPw, StringBuilder outTag, StringBuilder outStack) {
        boolean dumpAll = false;
        boolean oomOnly = false;
        
        int opti = 0;
        while (opti < args.length) {
            String opt = args[opti];
            if (opt == null || opt.length() <= 0 || opt.charAt(0) != '-') {
                break;
            }
            opti++;
            if ("-a".equals(opt)) {
                dumpAll = true;
            } else if ("--oom".equals(opt)) {
                oomOnly = true;
            } else if ("-h".equals(opt)) {
                pw.println("meminfo dump options: [-a] [--oom] [process]");
                pw.println("  -a: include all available information for each process.");
                pw.println("  --oom: only show processes organized by oom adj.");
                pw.println("If [process] is specified it can be the name or ");
                pw.println("pid of a specific process to dump.");
                return;
            } else {
                pw.println("Unknown argument: " + opt + "; use -h for help");
            }
        }
        
        ArrayList<ProcessRecord> procs = collectProcesses(pw, opti, args);
        if (procs == null) {
            return;
        }

        final boolean isCheckinRequest = scanArgs(args, "--checkin");
        long uptime = SystemClock.uptimeMillis();
        long realtime = SystemClock.elapsedRealtime();

        if (procs.size() == 1 || isCheckinRequest) {
            dumpAll = true;
        }

        if (isCheckinRequest) {
            // short checkin version
            pw.println(uptime + "," + realtime);
            pw.flush();
        } else {
            pw.println("Applications Memory Usage (kB):");
            pw.println("Uptime: " + uptime + " Realtime: " + realtime);
        }

        String[] innerArgs = new String[args.length-opti];
        System.arraycopy(args, opti, innerArgs, 0, args.length-opti);

        ArrayList<MemItem> procMems = new ArrayList<MemItem>();
        long nativePss=0, dalvikPss=0, otherPss=0;
        long[] miscPss = new long[Debug.MemoryInfo.NUM_OTHER_STATS];

        long oomPss[] = new long[DUMP_MEM_OOM_LABEL.length];
        ArrayList<MemItem>[] oomProcs = (ArrayList<MemItem>[])
                new ArrayList[DUMP_MEM_OOM_LABEL.length];

        long totalPss = 0;

        for (int i = procs.size() - 1 ; i >= 0 ; i--) {
            ProcessRecord r = procs.get(i);
            if (r.thread != null) {
                if (!isCheckinRequest && dumpAll) {
                    pw.println("\n** MEMINFO in pid " + r.pid + " [" + r.processName + "] **");
                    pw.flush();
                }
                Debug.MemoryInfo mi = null;
                if (dumpAll) {
                    try {
                        mi = r.thread.dumpMemInfo(fd, isCheckinRequest, dumpAll, innerArgs);
                    } catch (RemoteException e) {
                        if (!isCheckinRequest) {
                            pw.println("Got RemoteException!");
                            pw.flush();
                        }
                    }
                } else {
                    mi = new Debug.MemoryInfo();
                    Debug.getMemoryInfo(r.pid, mi);
                }

                if (!isCheckinRequest && mi != null) {
                    long myTotalPss = mi.getTotalPss();
                    totalPss += myTotalPss;
                    MemItem pssItem = new MemItem(r.processName + " (pid " + r.pid + ")",
                            r.processName, myTotalPss, 0);
                    procMems.add(pssItem);

                    nativePss += mi.nativePss;
                    dalvikPss += mi.dalvikPss;
                    otherPss += mi.otherPss;
                    for (int j=0; j<Debug.MemoryInfo.NUM_OTHER_STATS; j++) {
                        long mem = mi.getOtherPss(j);
                        miscPss[j] += mem;
                        otherPss -= mem;
                    }

                    for (int oomIndex=0; oomIndex<oomPss.length; oomIndex++) {
                        if (r.setAdj <= DUMP_MEM_OOM_ADJ[oomIndex]
                                || oomIndex == (oomPss.length-1)) {
                            oomPss[oomIndex] += myTotalPss;
                            if (oomProcs[oomIndex] == null) {
                                oomProcs[oomIndex] = new ArrayList<MemItem>();
                            }
                            oomProcs[oomIndex].add(pssItem);
                            break;
                        }
                    }
                }
            }
        }

        if (!isCheckinRequest && procs.size() > 1) {
            ArrayList<MemItem> catMems = new ArrayList<MemItem>();

            catMems.add(new MemItem("Native", "Native", nativePss, -1));
            catMems.add(new MemItem("Dalvik", "Dalvik", dalvikPss, -2));
            catMems.add(new MemItem("Unknown", "Unknown", otherPss, -3));
            for (int j=0; j<Debug.MemoryInfo.NUM_OTHER_STATS; j++) {
                String label = Debug.MemoryInfo.getOtherLabel(j);
                catMems.add(new MemItem(label, label, miscPss[j], j));
            }

            ArrayList<MemItem> oomMems = new ArrayList<MemItem>();
            for (int j=0; j<oomPss.length; j++) {
                if (oomPss[j] != 0) {
                    String label = DUMP_MEM_OOM_LABEL[j];
                    MemItem item = new MemItem(label, label, oomPss[j],
                            DUMP_MEM_OOM_ADJ[j]);
                    item.subitems = oomProcs[j];
                    oomMems.add(item);
                }
            }

            if (outTag != null || outStack != null) {
                if (outTag != null) {
                    appendMemBucket(outTag, totalPss, "total", false);
                }
                if (outStack != null) {
                    appendMemBucket(outStack, totalPss, "total", true);
                }
                boolean firstLine = true;
                for (int i=0; i<oomMems.size(); i++) {
                    MemItem miCat = oomMems.get(i);
                    if (miCat.subitems == null || miCat.subitems.size() < 1) {
                        continue;
                    }
                    if (miCat.id < ProcessList.SERVICE_ADJ
                            || miCat.id == ProcessList.HOME_APP_ADJ
                            || miCat.id == ProcessList.PREVIOUS_APP_ADJ) {
                        if (outTag != null && miCat.id <= ProcessList.FOREGROUND_APP_ADJ) {
                            outTag.append(" / ");
                        }
                        if (outStack != null) {
                            if (miCat.id >= ProcessList.FOREGROUND_APP_ADJ) {
                                if (firstLine) {
                                    outStack.append(":");
                                    firstLine = false;
                                }
                                outStack.append("\n\t at ");
                            } else {
                                outStack.append("$");
                            }
                        }
                        for (int j=0; j<miCat.subitems.size(); j++) {
                            MemItem mi = miCat.subitems.get(j);
                            if (j > 0) {
                                if (outTag != null) {
                                    outTag.append(" ");
                                }
                                if (outStack != null) {
                                    outStack.append("$");
                                }
                            }
                            if (outTag != null && miCat.id <= ProcessList.FOREGROUND_APP_ADJ) {
                                appendMemBucket(outTag, mi.pss, mi.shortLabel, false);
                            }
                            if (outStack != null) {
                                appendMemBucket(outStack, mi.pss, mi.shortLabel, true);
                            }
                        }
                        if (outStack != null && miCat.id >= ProcessList.FOREGROUND_APP_ADJ) {
                            outStack.append("(");
                            for (int k=0; k<DUMP_MEM_OOM_ADJ.length; k++) {
                                if (DUMP_MEM_OOM_ADJ[k] == miCat.id) {
                                    outStack.append(DUMP_MEM_OOM_LABEL[k]);
                                    outStack.append(":");
                                    outStack.append(DUMP_MEM_OOM_ADJ[k]);
                                }
                            }
                            outStack.append(")");
                        }
                    }
                }
            }

            if (!brief && !oomOnly) {
                pw.println();
                pw.println("Total PSS by process:");
                dumpMemItems(pw, "  ", procMems, true);
                pw.println();
            }
            pw.println("Total PSS by OOM adjustment:");
            dumpMemItems(pw, "  ", oomMems, false);
            if (!oomOnly) {
                PrintWriter out = categoryPw != null ? categoryPw : pw;
                out.println();
                out.println("Total PSS by category:");
                dumpMemItems(out, "  ", catMems, true);
            }
            pw.println();
            pw.print("Total PSS: "); pw.print(totalPss); pw.println(" kB");
            final int[] SINGLE_LONG_FORMAT = new int[] {
                Process.PROC_SPACE_TERM|Process.PROC_OUT_LONG
            };
            long[] longOut = new long[1];
            Process.readProcFile("/sys/kernel/mm/ksm/pages_shared",
                    SINGLE_LONG_FORMAT, null, longOut, null);
            long shared = longOut[0] * ProcessList.PAGE_SIZE / 1024;
            longOut[0] = 0;
            Process.readProcFile("/sys/kernel/mm/ksm/pages_sharing",
                    SINGLE_LONG_FORMAT, null, longOut, null);
            long sharing = longOut[0] * ProcessList.PAGE_SIZE / 1024;
            longOut[0] = 0;
            Process.readProcFile("/sys/kernel/mm/ksm/pages_unshared",
                    SINGLE_LONG_FORMAT, null, longOut, null);
            long unshared = longOut[0] * ProcessList.PAGE_SIZE / 1024;
            longOut[0] = 0;
            Process.readProcFile("/sys/kernel/mm/ksm/pages_volatile",
                    SINGLE_LONG_FORMAT, null, longOut, null);
            long voltile = longOut[0] * ProcessList.PAGE_SIZE / 1024;
            pw.print("      KSM: "); pw.print(sharing); pw.print(" kB saved from shared ");
                    pw.print(shared); pw.println(" kB");
            pw.print("           "); pw.print(unshared); pw.print(" kB unshared; ");
                    pw.print(voltile); pw.println(" kB volatile");
        }
    }

    /**
     * Searches array of arguments for the specified string
     * @param args array of argument strings
     * @param value value to search for
     * @return true if the value is contained in the array
     */
    private static boolean scanArgs(String[] args, String value) {
        if (args != null) {
            for (String arg : args) {
                if (value.equals(arg)) {
                    return true;
                }
            }
        }
        return false;
    }

    private final boolean removeDyingProviderLocked(ProcessRecord proc,
            ContentProviderRecord cpr, boolean always) {
        final boolean inLaunching = mLaunchingProviders.contains(cpr);

        if (!inLaunching || always) {
            synchronized (cpr) {
                cpr.launchingApp = null;
                cpr.notifyAll();
            }
            mProviderMap.removeProviderByClass(cpr.name, UserHandle.getUserId(cpr.uid));
            String names[] = cpr.info.authority.split(";");
            for (int j = 0; j < names.length; j++) {
                mProviderMap.removeProviderByName(names[j], UserHandle.getUserId(cpr.uid));
            }
        }

        for (int i=0; i<cpr.connections.size(); i++) {
            ContentProviderConnection conn = cpr.connections.get(i);
            if (conn.waiting) {
                // If this connection is waiting for the provider, then we don't
                // need to mess with its process unless we are always removing
                // or for some reason the provider is not currently launching.
                if (inLaunching && !always) {
                    continue;
                }
            }
            ProcessRecord capp = conn.client;
            conn.dead = true;
            if (conn.stableCount > 0) {
                if (!capp.persistent && capp.thread != null
                        && capp.pid != 0
                        && capp.pid != MY_PID) {
                    Slog.i(TAG, "Kill " + capp.processName
                            + " (pid " + capp.pid + "): provider " + cpr.info.name
                            + " in dying process " + (proc != null ? proc.processName : "??"));
                    EventLog.writeEvent(EventLogTags.AM_KILL, capp.userId, capp.pid,
                            capp.processName, capp.setAdj, "dying provider "
                                    + cpr.name.toShortString());
                    Process.killProcessQuiet(capp.pid);
                }
            } else if (capp.thread != null && conn.provider.provider != null) {
                try {
                    capp.thread.unstableProviderDied(conn.provider.provider.asBinder());
                } catch (RemoteException e) {
                }
                // In the protocol here, we don't expect the client to correctly
                // clean up this connection, we'll just remove it.
                cpr.connections.remove(i);
                conn.client.conProviders.remove(conn);
            }
        }

        if (inLaunching && always) {
            mLaunchingProviders.remove(cpr);
        }
        return inLaunching;
    }
    
    /**
     * Main code for cleaning up a process when it has gone away.  This is
     * called both as a result of the process dying, or directly when stopping 
     * a process when running in single process mode.
     */
    private final void cleanUpApplicationRecordLocked(ProcessRecord app,
            boolean restarting, boolean allowRestart, int index) {
        if (index >= 0) {
            mLruProcesses.remove(index);
        }

        mProcessesToGc.remove(app);
        
        // Dismiss any open dialogs.
        if (app.crashDialog != null) {
            app.crashDialog.dismiss();
            app.crashDialog = null;
        }
        if (app.anrDialog != null) {
            app.anrDialog.dismiss();
            app.anrDialog = null;
        }
        if (app.waitDialog != null) {
            app.waitDialog.dismiss();
            app.waitDialog = null;
        }

        app.crashing = false;
        app.notResponding = false;
        
        app.resetPackageList();
        app.unlinkDeathRecipient();
        app.thread = null;
        app.forcingToForeground = null;
        app.foregroundServices = false;
        app.foregroundActivities = false;
        app.hasShownUi = false;
        app.hasAboveClient = false;

        mServices.killServicesLocked(app, allowRestart);

        boolean restart = false;

        // Remove published content providers.
        if (!app.pubProviders.isEmpty()) {
            Iterator<ContentProviderRecord> it = app.pubProviders.values().iterator();
            while (it.hasNext()) {
                ContentProviderRecord cpr = it.next();

                final boolean always = app.bad || !allowRestart;
                if (removeDyingProviderLocked(app, cpr, always) || always) {
                    // We left the provider in the launching list, need to
                    // restart it.
                    restart = true;
                }

                cpr.provider = null;
                cpr.proc = null;
            }
            app.pubProviders.clear();
        }
        
        // Take care of any launching providers waiting for this process.
        if (checkAppInLaunchingProvidersLocked(app, false)) {
            restart = true;
        }
        
        // Unregister from connected content providers.
        if (!app.conProviders.isEmpty()) {
            for (int i=0; i<app.conProviders.size(); i++) {
                ContentProviderConnection conn = app.conProviders.get(i);
                conn.provider.connections.remove(conn);
            }
            app.conProviders.clear();
        }

        // At this point there may be remaining entries in mLaunchingProviders
        // where we were the only one waiting, so they are no longer of use.
        // Look for these and clean up if found.
        // XXX Commented out for now.  Trying to figure out a way to reproduce
        // the actual situation to identify what is actually going on.
        if (false) {
            for (int i=0; i<mLaunchingProviders.size(); i++) {
                ContentProviderRecord cpr = (ContentProviderRecord)
                        mLaunchingProviders.get(i);
                if (cpr.connections.size() <= 0 && !cpr.hasExternalProcessHandles()) {
                    synchronized (cpr) {
                        cpr.launchingApp = null;
                        cpr.notifyAll();
                    }
                }
            }
        }
        
        skipCurrentReceiverLocked(app);

        // Unregister any receivers.
        if (app.receivers.size() > 0) {
            Iterator<ReceiverList> it = app.receivers.iterator();
            while (it.hasNext()) {
                removeReceiverLocked(it.next());
            }
            app.receivers.clear();
        }
        
        // If the app is undergoing backup, tell the backup manager about it
        if (mBackupTarget != null && app.pid == mBackupTarget.app.pid) {
            if (DEBUG_BACKUP || DEBUG_CLEANUP) Slog.d(TAG, "App "
                    + mBackupTarget.appInfo + " died during backup");
            try {
                IBackupManager bm = IBackupManager.Stub.asInterface(
                        ServiceManager.getService(Context.BACKUP_SERVICE));
                bm.agentDisconnected(app.info.packageName);
            } catch (RemoteException e) {
                // can't happen; backup manager is local
            }
        }

        for (int i = mPendingProcessChanges.size()-1; i>=0; i--) {
            ProcessChangeItem item = mPendingProcessChanges.get(i);
            if (item.pid == app.pid) {
                mPendingProcessChanges.remove(i);
                mAvailProcessChanges.add(item);
            }
        }
        mHandler.obtainMessage(DISPATCH_PROCESS_DIED, app.pid, app.info.uid, null).sendToTarget();

        // If the caller is restarting this app, then leave it in its
        // current lists and let the caller take care of it.
        if (restarting) {
            return;
        }

        if (!app.persistent || app.isolated) {
            if (DEBUG_PROCESSES || DEBUG_CLEANUP) Slog.v(TAG,
                    "Removing non-persistent process during cleanup: " + app);
            mProcessNames.remove(app.processName, app.uid);
            mIsolatedProcesses.remove(app.uid);
            if (mHeavyWeightProcess == app) {
                mHandler.sendMessage(mHandler.obtainMessage(CANCEL_HEAVY_NOTIFICATION_MSG,
                        mHeavyWeightProcess.userId, 0));
                mHeavyWeightProcess = null;
            }
        } else if (!app.removed) {
            // This app is persistent, so we need to keep its record around.
            // If it is not already on the pending app list, add it there
            // and start a new process for it.
            if (mPersistentStartingProcesses.indexOf(app) < 0) {
                mPersistentStartingProcesses.add(app);
                restart = true;
            }
        }
        if ((DEBUG_PROCESSES || DEBUG_CLEANUP) && mProcessesOnHold.contains(app)) Slog.v(TAG,
                "Clean-up removing on hold: " + app);
        mProcessesOnHold.remove(app);

        if (app == mHomeProcess) {
            mHomeProcess = null;
        }
        if (app == mPreviousProcess) {
            mPreviousProcess = null;
        }

        if (restart && !app.isolated) {
            // We have components that still need to be running in the
            // process, so re-launch it.
            mProcessNames.put(app.processName, app.uid, app);
            startProcessLocked(app, "restart", app.processName);
        } else if (app.pid > 0 && app.pid != MY_PID) {
            // Goodbye!
            synchronized (mPidsSelfLocked) {
                mPidsSelfLocked.remove(app.pid);
                mHandler.removeMessages(PROC_START_TIMEOUT_MSG, app);
            }
            app.setPid(0);
        }
    }

    boolean checkAppInLaunchingProvidersLocked(ProcessRecord app, boolean alwaysBad) {
        // Look through the content providers we are waiting to have launched,
        // and if any run in this process then either schedule a restart of
        // the process or kill the client waiting for it if this process has
        // gone bad.
        int NL = mLaunchingProviders.size();
        boolean restart = false;
        for (int i=0; i<NL; i++) {
            ContentProviderRecord cpr = mLaunchingProviders.get(i);
            if (cpr.launchingApp == app) {
                if (!alwaysBad && !app.bad) {
                    restart = true;
                } else {
                    removeDyingProviderLocked(app, cpr, true);
                    // cpr should have been removed from mLaunchingProviders
                    NL = mLaunchingProviders.size();
                    i--;
                }
            }
        }
        return restart;
    }
    
    // =========================================================
    // SERVICES
    // =========================================================

    public List<ActivityManager.RunningServiceInfo> getServices(int maxNum,
            int flags) {
        enforceNotIsolatedCaller("getServices");
        synchronized (this) {
            return mServices.getRunningServiceInfoLocked(maxNum, flags);
        }
    }

    public PendingIntent getRunningServiceControlPanel(ComponentName name) {
        enforceNotIsolatedCaller("getRunningServiceControlPanel");
        synchronized (this) {
            return mServices.getRunningServiceControlPanelLocked(name);
        }
    }
    
    public ComponentName startService(IApplicationThread caller, Intent service,
            String resolvedType, int userId) {
        enforceNotIsolatedCaller("startService");
        // Refuse possible leaked file descriptors
        if (service != null && service.hasFileDescriptors() == true) {
            throw new IllegalArgumentException("File descriptors passed in Intent");
        }

        if (DEBUG_SERVICE)
            Slog.v(TAG, "startService: " + service + " type=" + resolvedType);
        synchronized(this) {
            final int callingPid = Binder.getCallingPid();
            final int callingUid = Binder.getCallingUid();
            checkValidCaller(callingUid, userId);
            final long origId = Binder.clearCallingIdentity();
            ComponentName res = mServices.startServiceLocked(caller, service,
                    resolvedType, callingPid, callingUid, userId);
            Binder.restoreCallingIdentity(origId);
            return res;
        }
    }

    ComponentName startServiceInPackage(int uid,
            Intent service, String resolvedType, int userId) {
        synchronized(this) {
            if (DEBUG_SERVICE)
                Slog.v(TAG, "startServiceInPackage: " + service + " type=" + resolvedType);
            final long origId = Binder.clearCallingIdentity();
            ComponentName res = mServices.startServiceLocked(null, service,
                    resolvedType, -1, uid, userId);
            Binder.restoreCallingIdentity(origId);
            return res;
        }
    }

    public int stopService(IApplicationThread caller, Intent service,
            String resolvedType, int userId) {
        enforceNotIsolatedCaller("stopService");
        // Refuse possible leaked file descriptors
        if (service != null && service.hasFileDescriptors() == true) {
            throw new IllegalArgumentException("File descriptors passed in Intent");
        }

        checkValidCaller(Binder.getCallingUid(), userId);

        synchronized(this) {
            return mServices.stopServiceLocked(caller, service, resolvedType, userId);
        }
    }

    public IBinder peekService(Intent service, String resolvedType) {
        enforceNotIsolatedCaller("peekService");
        // Refuse possible leaked file descriptors
        if (service != null && service.hasFileDescriptors() == true) {
            throw new IllegalArgumentException("File descriptors passed in Intent");
        }
        synchronized(this) {
            return mServices.peekServiceLocked(service, resolvedType);
        }
    }
    
    public boolean stopServiceToken(ComponentName className, IBinder token,
            int startId) {
        synchronized(this) {
            return mServices.stopServiceTokenLocked(className, token, startId);
        }
    }

    public void setServiceForeground(ComponentName className, IBinder token,
            int id, Notification notification, boolean removeNotification) {
        synchronized(this) {
            mServices.setServiceForegroundLocked(className, token, id, notification,
                    removeNotification);
        }
    }

    public int handleIncomingUser(int callingPid, int callingUid, int userId, boolean allowAll,
            boolean requireFull, String name, String callerPackage) {
        final int callingUserId = UserHandle.getUserId(callingUid);
        if (callingUserId != userId) {
            if (callingUid != 0 && callingUid != Process.SYSTEM_UID) {
                if ((requireFull || checkComponentPermission(
                        android.Manifest.permission.INTERACT_ACROSS_USERS,
                        callingPid, callingUid, -1, true) != PackageManager.PERMISSION_GRANTED)
                        && checkComponentPermission(
                                android.Manifest.permission.INTERACT_ACROSS_USERS_FULL,
                                callingPid, callingUid, -1, true)
                                != PackageManager.PERMISSION_GRANTED) {
                    if (userId == UserHandle.USER_CURRENT_OR_SELF) {
                        // In this case, they would like to just execute as their
                        // owner user instead of failing.
                        userId = callingUserId;
                    } else {
                        StringBuilder builder = new StringBuilder(128);
                        builder.append("Permission Denial: ");
                        builder.append(name);
                        if (callerPackage != null) {
                            builder.append(" from ");
                            builder.append(callerPackage);
                        }
                        builder.append(" asks to run as user ");
                        builder.append(userId);
                        builder.append(" but is calling from user ");
                        builder.append(UserHandle.getUserId(callingUid));
                        builder.append("; this requires ");
                        builder.append(android.Manifest.permission.INTERACT_ACROSS_USERS_FULL);
                        if (!requireFull) {
                            builder.append(" or ");
                            builder.append(android.Manifest.permission.INTERACT_ACROSS_USERS);
                        }
                        String msg = builder.toString();
                        Slog.w(TAG, msg);
                        throw new SecurityException(msg);
                    }
                }
            }
            if (userId == UserHandle.USER_CURRENT
                    || userId == UserHandle.USER_CURRENT_OR_SELF) {
                // Note that we may be accessing this outside of a lock...
                // shouldn't be a big deal, if this is being called outside
                // of a locked context there is intrinsically a race with
                // the value the caller will receive and someone else changing it.
                userId = mCurrentUserId;
            }
            if (!allowAll && userId < 0) {
                throw new IllegalArgumentException(
                        "Call does not support special user #" + userId);
            }
        }
        return userId;
    }

    boolean isSingleton(String componentProcessName, ApplicationInfo aInfo,
            String className, int flags) {
        boolean result = false;
        if (UserHandle.getAppId(aInfo.uid) >= Process.FIRST_APPLICATION_UID) {
            if ((flags&ServiceInfo.FLAG_SINGLE_USER) != 0) {
                if (ActivityManager.checkUidPermission(
                        android.Manifest.permission.INTERACT_ACROSS_USERS,
                        aInfo.uid) != PackageManager.PERMISSION_GRANTED) {
                    ComponentName comp = new ComponentName(aInfo.packageName, className);
                    String msg = "Permission Denial: Component " + comp.flattenToShortString()
                            + " requests FLAG_SINGLE_USER, but app does not hold "
                            + android.Manifest.permission.INTERACT_ACROSS_USERS;
                    Slog.w(TAG, msg);
                    throw new SecurityException(msg);
                }
                result = true;
            }
        } else if (componentProcessName == aInfo.packageName) {
            result = (aInfo.flags & ApplicationInfo.FLAG_PERSISTENT) != 0;
        } else if ("system".equals(componentProcessName)) {
            result = true;
        }
        if (DEBUG_MU) {
            Slog.v(TAG, "isSingleton(" + componentProcessName + ", " + aInfo
                    + ", " + className + ", 0x" + Integer.toHexString(flags) + ") = " + result);
        }
        return result;
    }

    public int bindService(IApplicationThread caller, IBinder token,
            Intent service, String resolvedType,
            IServiceConnection connection, int flags, int userId) {
        enforceNotIsolatedCaller("bindService");
        // Refuse possible leaked file descriptors
        if (service != null && service.hasFileDescriptors() == true) {
            throw new IllegalArgumentException("File descriptors passed in Intent");
        }

        synchronized(this) {
            return mServices.bindServiceLocked(caller, token, service, resolvedType,
                    connection, flags, userId);
        }
    }

    public boolean unbindService(IServiceConnection connection) {
        synchronized (this) {
            return mServices.unbindServiceLocked(connection);
        }
    }

    public void publishService(IBinder token, Intent intent, IBinder service) {
        // Refuse possible leaked file descriptors
        if (intent != null && intent.hasFileDescriptors() == true) {
            throw new IllegalArgumentException("File descriptors passed in Intent");
        }

        synchronized(this) {
            if (!(token instanceof ServiceRecord)) {
                throw new IllegalArgumentException("Invalid service token");
            }
            mServices.publishServiceLocked((ServiceRecord)token, intent, service);
        }
    }

    public void unbindFinished(IBinder token, Intent intent, boolean doRebind) {
        // Refuse possible leaked file descriptors
        if (intent != null && intent.hasFileDescriptors() == true) {
            throw new IllegalArgumentException("File descriptors passed in Intent");
        }

        synchronized(this) {
            mServices.unbindFinishedLocked((ServiceRecord)token, intent, doRebind);
        }
    }

    public void serviceDoneExecuting(IBinder token, int type, int startId, int res) {
        synchronized(this) {
            if (!(token instanceof ServiceRecord)) {
                throw new IllegalArgumentException("Invalid service token");
            }
            mServices.serviceDoneExecutingLocked((ServiceRecord)token, type, startId, res);
        }
    }
    
    // =========================================================
    // BACKUP AND RESTORE
    // =========================================================
    
    // Cause the target app to be launched if necessary and its backup agent
    // instantiated.  The backup agent will invoke backupAgentCreated() on the
    // activity manager to announce its creation.
    public boolean bindBackupAgent(ApplicationInfo app, int backupMode) {
        if (DEBUG_BACKUP) Slog.v(TAG, "bindBackupAgent: app=" + app + " mode=" + backupMode);
        enforceCallingPermission("android.permission.BACKUP", "bindBackupAgent");

        synchronized(this) {
            // !!! TODO: currently no check here that we're already bound
            BatteryStatsImpl.Uid.Pkg.Serv ss = null;
            BatteryStatsImpl stats = mBatteryStatsService.getActiveStatistics();
            synchronized (stats) {
                ss = stats.getServiceStatsLocked(app.uid, app.packageName, app.name);
            }

            // Backup agent is now in use, its package can't be stopped.
            try {
                AppGlobals.getPackageManager().setPackageStoppedState(
                        app.packageName, false, UserHandle.getUserId(app.uid));
            } catch (RemoteException e) {
            } catch (IllegalArgumentException e) {
                Slog.w(TAG, "Failed trying to unstop package "
                        + app.packageName + ": " + e);
            }

            BackupRecord r = new BackupRecord(ss, app, backupMode);
            ComponentName hostingName = (backupMode == IApplicationThread.BACKUP_MODE_INCREMENTAL)
                    ? new ComponentName(app.packageName, app.backupAgentName)
                    : new ComponentName("android", "FullBackupAgent");
            // startProcessLocked() returns existing proc's record if it's already running
            ProcessRecord proc = startProcessLocked(app.processName, app,
                    false, 0, "backup", hostingName, false, false);
            if (proc == null) {
                Slog.e(TAG, "Unable to start backup agent process " + r);
                return false;
            }

            r.app = proc;
            mBackupTarget = r;
            mBackupAppName = app.packageName;

            // Try not to kill the process during backup
            updateOomAdjLocked(proc);

            // If the process is already attached, schedule the creation of the backup agent now.
            // If it is not yet live, this will be done when it attaches to the framework.
            if (proc.thread != null) {
                if (DEBUG_BACKUP) Slog.v(TAG, "Agent proc already running: " + proc);
                try {
                    proc.thread.scheduleCreateBackupAgent(app,
                            compatibilityInfoForPackageLocked(app), backupMode);
                } catch (RemoteException e) {
                    // Will time out on the backup manager side
                }
            } else {
                if (DEBUG_BACKUP) Slog.v(TAG, "Agent proc not running, waiting for attach");
            }
            // Invariants: at this point, the target app process exists and the application
            // is either already running or in the process of coming up.  mBackupTarget and
            // mBackupAppName describe the app, so that when it binds back to the AM we
            // know that it's scheduled for a backup-agent operation.
        }
        
        return true;
    }

    @Override
    public void clearPendingBackup() {
        if (DEBUG_BACKUP) Slog.v(TAG, "clearPendingBackup");
        enforceCallingPermission("android.permission.BACKUP", "clearPendingBackup");

        synchronized (this) {
            mBackupTarget = null;
            mBackupAppName = null;
        }
    }

    // A backup agent has just come up                    
    public void backupAgentCreated(String agentPackageName, IBinder agent) {
        if (DEBUG_BACKUP) Slog.v(TAG, "backupAgentCreated: " + agentPackageName
                + " = " + agent);

        synchronized(this) {
            if (!agentPackageName.equals(mBackupAppName)) {
                Slog.e(TAG, "Backup agent created for " + agentPackageName + " but not requested!");
                return;
            }
        }

        long oldIdent = Binder.clearCallingIdentity();
        try {
            IBackupManager bm = IBackupManager.Stub.asInterface(
                    ServiceManager.getService(Context.BACKUP_SERVICE));
            bm.agentConnected(agentPackageName, agent);
        } catch (RemoteException e) {
            // can't happen; the backup manager service is local
        } catch (Exception e) {
            Slog.w(TAG, "Exception trying to deliver BackupAgent binding: ");
            e.printStackTrace();
        } finally {
            Binder.restoreCallingIdentity(oldIdent);
        }
    }

    // done with this agent
    public void unbindBackupAgent(ApplicationInfo appInfo) {
        if (DEBUG_BACKUP) Slog.v(TAG, "unbindBackupAgent: " + appInfo);
        if (appInfo == null) {
            Slog.w(TAG, "unbind backup agent for null app");
            return;
        }

        synchronized(this) {
            try {
                if (mBackupAppName == null) {
                    Slog.w(TAG, "Unbinding backup agent with no active backup");
                    return;
                }

                if (!mBackupAppName.equals(appInfo.packageName)) {
                    Slog.e(TAG, "Unbind of " + appInfo + " but is not the current backup target");
                    return;
                }

                // Not backing this app up any more; reset its OOM adjustment
                final ProcessRecord proc = mBackupTarget.app;
                updateOomAdjLocked(proc);

                // If the app crashed during backup, 'thread' will be null here
                if (proc.thread != null) {
                    try {
                        proc.thread.scheduleDestroyBackupAgent(appInfo,
                                compatibilityInfoForPackageLocked(appInfo));
                    } catch (Exception e) {
                        Slog.e(TAG, "Exception when unbinding backup agent:");
                        e.printStackTrace();
                    }
                }
            } finally {
                mBackupTarget = null;
                mBackupAppName = null;
            }
        }
    }
    // =========================================================
    // BROADCASTS
    // =========================================================

    private final List getStickiesLocked(String action, IntentFilter filter,
            List cur, int userId) {
        final ContentResolver resolver = mContext.getContentResolver();
        HashMap<String, ArrayList<Intent>> stickies = mStickyBroadcasts.get(userId);
        if (stickies == null) {
            return cur;
        }
        final ArrayList<Intent> list = stickies.get(action);
        if (list == null) {
            return cur;
        }
        int N = list.size();
        for (int i=0; i<N; i++) {
            Intent intent = list.get(i);
            if (filter.match(resolver, intent, true, TAG) >= 0) {
                if (cur == null) {
                    cur = new ArrayList<Intent>();
                }
                cur.add(intent);
            }
        }
        return cur;
    }

    boolean isPendingBroadcastProcessLocked(int pid) {
        return mFgBroadcastQueue.isPendingBroadcastProcessLocked(pid)
                || mBgBroadcastQueue.isPendingBroadcastProcessLocked(pid);
    }

    void skipPendingBroadcastLocked(int pid) {
            Slog.w(TAG, "Unattached app died before broadcast acknowledged, skipping");
            for (BroadcastQueue queue : mBroadcastQueues) {
                queue.skipPendingBroadcastLocked(pid);
            }
    }

    // The app just attached; send any pending broadcasts that it should receive
    boolean sendPendingBroadcastsLocked(ProcessRecord app) {
        boolean didSomething = false;
        for (BroadcastQueue queue : mBroadcastQueues) {
            didSomething |= queue.sendPendingBroadcastsLocked(app);
        }
        return didSomething;
    }

    public Intent registerReceiver(IApplicationThread caller, String callerPackage,
            IIntentReceiver receiver, IntentFilter filter, String permission, int userId) {
        enforceNotIsolatedCaller("registerReceiver");
        int callingUid;
        int callingPid;
        synchronized(this) {
            ProcessRecord callerApp = null;
            if (caller != null) {
                callerApp = getRecordForAppLocked(caller);
                if (callerApp == null) {
                    throw new SecurityException(
                            "Unable to find app for caller " + caller
                            + " (pid=" + Binder.getCallingPid()
                            + ") when registering receiver " + receiver);
                }
                if (callerApp.info.uid != Process.SYSTEM_UID &&
                        !callerApp.pkgList.contains(callerPackage)) {
                    throw new SecurityException("Given caller package " + callerPackage
                            + " is not running in process " + callerApp);
                }
                callingUid = callerApp.info.uid;
                callingPid = callerApp.pid;
            } else {
                callerPackage = null;
                callingUid = Binder.getCallingUid();
                callingPid = Binder.getCallingPid();
            }

            userId = this.handleIncomingUser(callingPid, callingUid, userId,
                    true, true, "registerReceiver", callerPackage);

            List allSticky = null;

            // Look for any matching sticky broadcasts...
            Iterator actions = filter.actionsIterator();
            if (actions != null) {
                while (actions.hasNext()) {
                    String action = (String)actions.next();
                    allSticky = getStickiesLocked(action, filter, allSticky,
                            UserHandle.USER_ALL);
                    allSticky = getStickiesLocked(action, filter, allSticky,
                            UserHandle.getUserId(callingUid));
                }
            } else {
                allSticky = getStickiesLocked(null, filter, allSticky,
                        UserHandle.USER_ALL);
                allSticky = getStickiesLocked(null, filter, allSticky,
                        UserHandle.getUserId(callingUid));
            }

            // The first sticky in the list is returned directly back to
            // the client.
            Intent sticky = allSticky != null ? (Intent)allSticky.get(0) : null;

            if (DEBUG_BROADCAST) Slog.v(TAG, "Register receiver " + filter
                    + ": " + sticky);

            if (receiver == null) {
                return sticky;
            }

            ReceiverList rl
                = (ReceiverList)mRegisteredReceivers.get(receiver.asBinder());
            if (rl == null) {
                rl = new ReceiverList(this, callerApp, callingPid, callingUid,
                        userId, receiver);
                if (rl.app != null) {
                    rl.app.receivers.add(rl);
                } else {
                    try {
                        receiver.asBinder().linkToDeath(rl, 0);
                    } catch (RemoteException e) {
                        return sticky;
                    }
                    rl.linkedToDeath = true;
                }
                mRegisteredReceivers.put(receiver.asBinder(), rl);
            } else if (rl.uid != callingUid) {
                throw new IllegalArgumentException(
                        "Receiver requested to register for uid " + callingUid
                        + " was previously registered for uid " + rl.uid);
            } else if (rl.pid != callingPid) {
                throw new IllegalArgumentException(
                        "Receiver requested to register for pid " + callingPid
                        + " was previously registered for pid " + rl.pid);
            } else if (rl.userId != userId) {
                throw new IllegalArgumentException(
                        "Receiver requested to register for user " + userId
                        + " was previously registered for user " + rl.userId);
            }
            BroadcastFilter bf = new BroadcastFilter(filter, rl, callerPackage,
                    permission, callingUid, userId);
            rl.add(bf);
            if (!bf.debugCheck()) {
                Slog.w(TAG, "==> For Dynamic broadast");
            }
            mReceiverResolver.addFilter(bf);

            // Enqueue broadcasts for all existing stickies that match
            // this filter.
            if (allSticky != null) {
                ArrayList receivers = new ArrayList();
                receivers.add(bf);

                int N = allSticky.size();
                for (int i=0; i<N; i++) {
                    Intent intent = (Intent)allSticky.get(i);
                    BroadcastQueue queue = broadcastQueueForIntent(intent);
                    BroadcastRecord r = new BroadcastRecord(queue, intent, null,
                            null, -1, -1, null, receivers, null, 0, null, null,
                            false, true, true, -1);
                    queue.enqueueParallelBroadcastLocked(r);
                    queue.scheduleBroadcastsLocked();
                }
            }

            return sticky;
        }
    }

    public void unregisterReceiver(IIntentReceiver receiver) {
        if (DEBUG_BROADCAST) Slog.v(TAG, "Unregister receiver: " + receiver);

        final long origId = Binder.clearCallingIdentity();
        try {
            boolean doTrim = false;

            synchronized(this) {
                ReceiverList rl
                = (ReceiverList)mRegisteredReceivers.get(receiver.asBinder());
                if (rl != null) {
                    if (rl.curBroadcast != null) {
                        BroadcastRecord r = rl.curBroadcast;
                        final boolean doNext = finishReceiverLocked(
                                receiver.asBinder(), r.resultCode, r.resultData,
                                r.resultExtras, r.resultAbort, true);
                        if (doNext) {
                            doTrim = true;
                            r.queue.processNextBroadcast(false);
                        }
                    }

                    if (rl.app != null) {
                        rl.app.receivers.remove(rl);
                    }
                    removeReceiverLocked(rl);
                    if (rl.linkedToDeath) {
                        rl.linkedToDeath = false;
                        rl.receiver.asBinder().unlinkToDeath(rl, 0);
                    }
                }
            }

            // If we actually concluded any broadcasts, we might now be able
            // to trim the recipients' apps from our working set
            if (doTrim) {
                trimApplications();
                return;
            }

        } finally {
            Binder.restoreCallingIdentity(origId);
        }
    }

    void removeReceiverLocked(ReceiverList rl) {
        mRegisteredReceivers.remove(rl.receiver.asBinder());
        int N = rl.size();
        for (int i=0; i<N; i++) {
            mReceiverResolver.removeFilter(rl.get(i));
        }
    }
    
    private final void sendPackageBroadcastLocked(int cmd, String[] packages, int userId) {
        for (int i = mLruProcesses.size() - 1 ; i >= 0 ; i--) {
            ProcessRecord r = mLruProcesses.get(i);
            if (r.thread != null && (userId == UserHandle.USER_ALL || r.userId == userId)) {
                try {
                    r.thread.dispatchPackageBroadcast(cmd, packages);
                } catch (RemoteException ex) {
                }
            }
        }
    }

    private List<ResolveInfo> collectReceiverComponents(Intent intent, String resolvedType,
            int[] users) {
        List<ResolveInfo> receivers = null;
        try {
            HashSet<ComponentName> singleUserReceivers = null;
            boolean scannedFirstReceivers = false;
            for (int user : users) {
                List<ResolveInfo> newReceivers = AppGlobals.getPackageManager()
                        .queryIntentReceivers(intent, resolvedType, STOCK_PM_FLAGS, user);
                if (user != 0 && newReceivers != null) {
                    // If this is not the primary user, we need to check for
                    // any receivers that should be filtered out.
                    for (int i=0; i<newReceivers.size(); i++) {
                        ResolveInfo ri = newReceivers.get(i);
                        if ((ri.activityInfo.flags&ActivityInfo.FLAG_PRIMARY_USER_ONLY) != 0) {
                            newReceivers.remove(i);
                            i--;
                        }
                    }
                }
                if (newReceivers != null && newReceivers.size() == 0) {
                    newReceivers = null;
                }
                if (receivers == null) {
                    receivers = newReceivers;
                } else if (newReceivers != null) {
                    // We need to concatenate the additional receivers
                    // found with what we have do far.  This would be easy,
                    // but we also need to de-dup any receivers that are
                    // singleUser.
                    if (!scannedFirstReceivers) {
                        // Collect any single user receivers we had already retrieved.
                        scannedFirstReceivers = true;
                        for (int i=0; i<receivers.size(); i++) {
                            ResolveInfo ri = receivers.get(i);
                            if ((ri.activityInfo.flags&ActivityInfo.FLAG_SINGLE_USER) != 0) {
                                ComponentName cn = new ComponentName(
                                        ri.activityInfo.packageName, ri.activityInfo.name);
                                if (singleUserReceivers == null) {
                                    singleUserReceivers = new HashSet<ComponentName>();
                                }
                                singleUserReceivers.add(cn);
                            }
                        }
                    }
                    // Add the new results to the existing results, tracking
                    // and de-dupping single user receivers.
                    for (int i=0; i<newReceivers.size(); i++) {
                        ResolveInfo ri = newReceivers.get(i);
                        if ((ri.activityInfo.flags&ActivityInfo.FLAG_SINGLE_USER) != 0) {
                            ComponentName cn = new ComponentName(
                                    ri.activityInfo.packageName, ri.activityInfo.name);
                            if (singleUserReceivers == null) {
                                singleUserReceivers = new HashSet<ComponentName>();
                            }
                            if (!singleUserReceivers.contains(cn)) {
                                singleUserReceivers.add(cn);
                                receivers.add(ri);
                            }
                        } else {
                            receivers.add(ri);
                        }
                    }
                }
            }
        } catch (RemoteException ex) {
            // pm is in same process, this will never happen.
        }
        return receivers;
    }

    private final int broadcastIntentLocked(ProcessRecord callerApp,
            String callerPackage, Intent intent, String resolvedType,
            IIntentReceiver resultTo, int resultCode, String resultData,
            Bundle map, String requiredPermission,
            boolean ordered, boolean sticky, int callingPid, int callingUid,
            int userId) {
        intent = new Intent(intent);

        // By default broadcasts do not go to stopped apps.
        intent.addFlags(Intent.FLAG_EXCLUDE_STOPPED_PACKAGES);

        if (DEBUG_BROADCAST_LIGHT) Slog.v(
            TAG, (sticky ? "Broadcast sticky: ": "Broadcast: ") + intent
            + " ordered=" + ordered + " userid=" + userId);
        if ((resultTo != null) && !ordered) {
            Slog.w(TAG, "Broadcast " + intent + " not ordered but result callback requested!");
        }

        userId = handleIncomingUser(callingPid, callingUid, userId,
                true, false, "broadcast", callerPackage);

        // Make sure that the user who is receiving this broadcast is started.
        // If not, we will just skip it.
        if (userId != UserHandle.USER_ALL && mStartedUsers.get(userId) == null) {
            if (callingUid != Process.SYSTEM_UID || (intent.getFlags()
                    & Intent.FLAG_RECEIVER_BOOT_UPGRADE) == 0) {
                Slog.w(TAG, "Skipping broadcast of " + intent
                        + ": user " + userId + " is stopped");
                return ActivityManager.BROADCAST_SUCCESS;
            }
        }

        /*
         * Prevent non-system code (defined here to be non-persistent
         * processes) from sending protected broadcasts.
         */
        int callingAppId = UserHandle.getAppId(callingUid);
        if (callingAppId == Process.SYSTEM_UID || callingAppId == Process.PHONE_UID
            || callingAppId == Process.SHELL_UID || callingAppId == Process.BLUETOOTH_UID ||
            callingUid == 0) {
            // Always okay.
        } else if (callerApp == null || !callerApp.persistent) {
            try {
                if (AppGlobals.getPackageManager().isProtectedBroadcast(
                        intent.getAction())) {
                    String msg = "Permission Denial: not allowed to send broadcast "
                            + intent.getAction() + " from pid="
                            + callingPid + ", uid=" + callingUid;
                    Slog.w(TAG, msg);
                    throw new SecurityException(msg);
                }
            } catch (RemoteException e) {
                Slog.w(TAG, "Remote exception", e);
                return ActivityManager.BROADCAST_SUCCESS;
            }
        }

        // Handle special intents: if this broadcast is from the package
        // manager about a package being removed, we need to remove all of
        // its activities from the history stack.
        final boolean uidRemoved = Intent.ACTION_UID_REMOVED.equals(
                intent.getAction());
        if (Intent.ACTION_PACKAGE_REMOVED.equals(intent.getAction())
                || Intent.ACTION_PACKAGE_CHANGED.equals(intent.getAction())
                || Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE.equals(intent.getAction())
                || uidRemoved) {
            if (checkComponentPermission(
                    android.Manifest.permission.BROADCAST_PACKAGE_REMOVED,
                    callingPid, callingUid, -1, true)
                    == PackageManager.PERMISSION_GRANTED) {
                if (uidRemoved) {
                    final Bundle intentExtras = intent.getExtras();
                    final int uid = intentExtras != null
                            ? intentExtras.getInt(Intent.EXTRA_UID) : -1;
                    if (uid >= 0) {
                        BatteryStatsImpl bs = mBatteryStatsService.getActiveStatistics();
                        synchronized (bs) {
                            bs.removeUidStatsLocked(uid);
                        }
                    }
                } else {
                    // If resources are unavailable just force stop all
                    // those packages and flush the attribute cache as well.
                    if (Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE.equals(intent.getAction())) {
                        String list[] = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST);
                        if (list != null && (list.length > 0)) {
                            for (String pkg : list) {
                                forceStopPackageLocked(pkg, -1, false, true, true, false, userId);
                            }
                            sendPackageBroadcastLocked(
                                    IApplicationThread.EXTERNAL_STORAGE_UNAVAILABLE, list, userId);
                        }
                    } else {
                        Uri data = intent.getData();
                        String ssp;
                        if (data != null && (ssp=data.getSchemeSpecificPart()) != null) {
                            if (!intent.getBooleanExtra(Intent.EXTRA_DONT_KILL_APP, false)) {
                                forceStopPackageLocked(ssp,
                                        intent.getIntExtra(Intent.EXTRA_UID, -1), false, true, true,
                                        false, userId);
                            }
                            if (Intent.ACTION_PACKAGE_REMOVED.equals(intent.getAction())) {
                                sendPackageBroadcastLocked(IApplicationThread.PACKAGE_REMOVED,
                                        new String[] {ssp}, userId);
                            }
                        }
                    }
                }
            } else {
                String msg = "Permission Denial: " + intent.getAction()
                        + " broadcast from " + callerPackage + " (pid=" + callingPid
                        + ", uid=" + callingUid + ")"
                        + " requires "
                        + android.Manifest.permission.BROADCAST_PACKAGE_REMOVED;
                Slog.w(TAG, msg);
                throw new SecurityException(msg);
            }

        // Special case for adding a package: by default turn on compatibility
        // mode.
        } else if (Intent.ACTION_PACKAGE_ADDED.equals(intent.getAction())) {
            Uri data = intent.getData();
            String ssp;
            if (data != null && (ssp=data.getSchemeSpecificPart()) != null) {
                mCompatModePackages.handlePackageAddedLocked(ssp,
                        intent.getBooleanExtra(Intent.EXTRA_REPLACING, false));
            }
        }

        /*
         * If this is the time zone changed action, queue up a message that will reset the timezone
         * of all currently running processes. This message will get queued up before the broadcast
         * happens.
         */
        if (intent.ACTION_TIMEZONE_CHANGED.equals(intent.getAction())) {
            mHandler.sendEmptyMessage(UPDATE_TIME_ZONE);
        }

        if (intent.ACTION_CLEAR_DNS_CACHE.equals(intent.getAction())) {
            mHandler.sendEmptyMessage(CLEAR_DNS_CACHE);
        }

        if (Proxy.PROXY_CHANGE_ACTION.equals(intent.getAction())) {
            ProxyProperties proxy = intent.getParcelableExtra("proxy");
            mHandler.sendMessage(mHandler.obtainMessage(UPDATE_HTTP_PROXY, proxy));
        }

        // Add to the sticky list if requested.
        if (sticky) {
            if (checkPermission(android.Manifest.permission.BROADCAST_STICKY,
                    callingPid, callingUid)
                    != PackageManager.PERMISSION_GRANTED) {
                String msg = "Permission Denial: broadcastIntent() requesting a sticky broadcast from pid="
                        + callingPid + ", uid=" + callingUid
                        + " requires " + android.Manifest.permission.BROADCAST_STICKY;
                Slog.w(TAG, msg);
                throw new SecurityException(msg);
            }
            if (requiredPermission != null) {
                Slog.w(TAG, "Can't broadcast sticky intent " + intent
                        + " and enforce permission " + requiredPermission);
                return ActivityManager.BROADCAST_STICKY_CANT_HAVE_PERMISSION;
            }
            if (intent.getComponent() != null) {
                throw new SecurityException(
                        "Sticky broadcasts can't target a specific component");
            }
            // We use userId directly here, since the "all" target is maintained
            // as a separate set of sticky broadcasts.
            if (userId != UserHandle.USER_ALL) {
                // But first, if this is not a broadcast to all users, then
                // make sure it doesn't conflict with an existing broadcast to
                // all users.
                HashMap<String, ArrayList<Intent>> stickies = mStickyBroadcasts.get(
                        UserHandle.USER_ALL);
                if (stickies != null) {
                    ArrayList<Intent> list = stickies.get(intent.getAction());
                    if (list != null) {
                        int N = list.size();
                        int i;
                        for (i=0; i<N; i++) {
                            if (intent.filterEquals(list.get(i))) {
                                throw new IllegalArgumentException(
                                        "Sticky broadcast " + intent + " for user "
                                        + userId + " conflicts with existing global broadcast");
                            }
                        }
                    }
                }
            }
            HashMap<String, ArrayList<Intent>> stickies = mStickyBroadcasts.get(userId);
            if (stickies == null) {
                stickies = new HashMap<String, ArrayList<Intent>>();
                mStickyBroadcasts.put(userId, stickies);
            }
            ArrayList<Intent> list = stickies.get(intent.getAction());
            if (list == null) {
                list = new ArrayList<Intent>();
                stickies.put(intent.getAction(), list);
            }
            int N = list.size();
            int i;
            for (i=0; i<N; i++) {
                if (intent.filterEquals(list.get(i))) {
                    // This sticky already exists, replace it.
                    list.set(i, new Intent(intent));
                    break;
                }
            }
            if (i >= N) {
                list.add(new Intent(intent));
            }
        }

        int[] users;
        if (userId == UserHandle.USER_ALL) {
            // Caller wants broadcast to go to all started users.
            users = mStartedUserArray;
        } else {
            // Caller wants broadcast to go to one specific user.
            users = new int[] {userId};
        }

        // Figure out who all will receive this broadcast.
        List receivers = null;
        List<BroadcastFilter> registeredReceivers = null;
        // Need to resolve the intent to interested receivers...
        if ((intent.getFlags()&Intent.FLAG_RECEIVER_REGISTERED_ONLY)
                 == 0) {
            receivers = collectReceiverComponents(intent, resolvedType, users);
        }
        if (intent.getComponent() == null) {
            registeredReceivers = mReceiverResolver.queryIntent(intent,
                    resolvedType, false, userId);
        }

        final boolean replacePending =
                (intent.getFlags()&Intent.FLAG_RECEIVER_REPLACE_PENDING) != 0;
        
        if (DEBUG_BROADCAST) Slog.v(TAG, "Enqueing broadcast: " + intent.getAction()
                + " replacePending=" + replacePending);
        
        int NR = registeredReceivers != null ? registeredReceivers.size() : 0;
        if (!ordered && NR > 0) {
            // If we are not serializing this broadcast, then send the
            // registered receivers separately so they don't wait for the
            // components to be launched.
            final BroadcastQueue queue = broadcastQueueForIntent(intent);
            BroadcastRecord r = new BroadcastRecord(queue, intent, callerApp,
                    callerPackage, callingPid, callingUid, requiredPermission,
                    registeredReceivers, resultTo, resultCode, resultData, map,
                    ordered, sticky, false, userId);
            if (DEBUG_BROADCAST) Slog.v(
                    TAG, "Enqueueing parallel broadcast " + r);
            final boolean replaced = replacePending && queue.replaceParallelBroadcastLocked(r);
            if (!replaced) {
                queue.enqueueParallelBroadcastLocked(r);
                queue.scheduleBroadcastsLocked();
            }
            registeredReceivers = null;
            NR = 0;
        }

        // Merge into one list.
        int ir = 0;
        if (receivers != null) {
            // A special case for PACKAGE_ADDED: do not allow the package
            // being added to see this broadcast.  This prevents them from
            // using this as a back door to get run as soon as they are
            // installed.  Maybe in the future we want to have a special install
            // broadcast or such for apps, but we'd like to deliberately make
            // this decision.
            String skipPackages[] = null;
            if (Intent.ACTION_PACKAGE_ADDED.equals(intent.getAction())
                    || Intent.ACTION_PACKAGE_RESTARTED.equals(intent.getAction())
                    || Intent.ACTION_PACKAGE_DATA_CLEARED.equals(intent.getAction())) {
                Uri data = intent.getData();
                if (data != null) {
                    String pkgName = data.getSchemeSpecificPart();
                    if (pkgName != null) {
                        skipPackages = new String[] { pkgName };
                    }
                }
            } else if (Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE.equals(intent.getAction())) {
                skipPackages = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST);
            }
            if (skipPackages != null && (skipPackages.length > 0)) {
                for (String skipPackage : skipPackages) {
                    if (skipPackage != null) {
                        int NT = receivers.size();
                        for (int it=0; it<NT; it++) {
                            ResolveInfo curt = (ResolveInfo)receivers.get(it);
                            if (curt.activityInfo.packageName.equals(skipPackage)) {
                                receivers.remove(it);
                                it--;
                                NT--;
                            }
                        }
                    }
                }
            }

            int NT = receivers != null ? receivers.size() : 0;
            int it = 0;
            ResolveInfo curt = null;
            BroadcastFilter curr = null;
            while (it < NT && ir < NR) {
                if (curt == null) {
                    curt = (ResolveInfo)receivers.get(it);
                }
                if (curr == null) {
                    curr = registeredReceivers.get(ir);
                }
                if (curr.getPriority() >= curt.priority) {
                    // Insert this broadcast record into the final list.
                    receivers.add(it, curr);
                    ir++;
                    curr = null;
                    it++;
                    NT++;
                } else {
                    // Skip to the next ResolveInfo in the final list.
                    it++;
                    curt = null;
                }
            }
        }
        while (ir < NR) {
            if (receivers == null) {
                receivers = new ArrayList();
            }
            receivers.add(registeredReceivers.get(ir));
            ir++;
        }

        if ((receivers != null && receivers.size() > 0)
                || resultTo != null) {
            BroadcastQueue queue = broadcastQueueForIntent(intent);
            BroadcastRecord r = new BroadcastRecord(queue, intent, callerApp,
                    callerPackage, callingPid, callingUid, requiredPermission,
                    receivers, resultTo, resultCode, resultData, map, ordered,
                    sticky, false, userId);
            if (DEBUG_BROADCAST) Slog.v(
                    TAG, "Enqueueing ordered broadcast " + r
                    + ": prev had " + queue.mOrderedBroadcasts.size());
            if (DEBUG_BROADCAST) {
                int seq = r.intent.getIntExtra("seq", -1);
                Slog.i(TAG, "Enqueueing broadcast " + r.intent.getAction() + " seq=" + seq);
            }
            boolean replaced = replacePending && queue.replaceOrderedBroadcastLocked(r); 
            if (!replaced) {
                queue.enqueueOrderedBroadcastLocked(r);
                queue.scheduleBroadcastsLocked();
            }
        }

        return ActivityManager.BROADCAST_SUCCESS;
    }

    final Intent verifyBroadcastLocked(Intent intent) {
        // Refuse possible leaked file descriptors
        if (intent != null && intent.hasFileDescriptors() == true) {
            throw new IllegalArgumentException("File descriptors passed in Intent");
        }

        int flags = intent.getFlags();

        if (!mProcessesReady) {
            // if the caller really truly claims to know what they're doing, go
            // ahead and allow the broadcast without launching any receivers
            if ((flags&Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT) != 0) {
                intent = new Intent(intent);
                intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
            } else if ((flags&Intent.FLAG_RECEIVER_REGISTERED_ONLY) == 0) {
                Slog.e(TAG, "Attempt to launch receivers of broadcast intent " + intent
                        + " before boot completion");
                throw new IllegalStateException("Cannot broadcast before boot completed");
            }
        }

        if ((flags&Intent.FLAG_RECEIVER_BOOT_UPGRADE) != 0) {
            throw new IllegalArgumentException(
                    "Can't use FLAG_RECEIVER_BOOT_UPGRADE here");
        }

        return intent;
    }

    public final int broadcastIntent(IApplicationThread caller,
            Intent intent, String resolvedType, IIntentReceiver resultTo,
            int resultCode, String resultData, Bundle map,
            String requiredPermission, boolean serialized, boolean sticky, int userId) {
        enforceNotIsolatedCaller("broadcastIntent");
        synchronized(this) {
            intent = verifyBroadcastLocked(intent);
            
            final ProcessRecord callerApp = getRecordForAppLocked(caller);
            final int callingPid = Binder.getCallingPid();
            final int callingUid = Binder.getCallingUid();
            final long origId = Binder.clearCallingIdentity();
            int res = broadcastIntentLocked(callerApp,
                    callerApp != null ? callerApp.info.packageName : null,
                    intent, resolvedType, resultTo,
                    resultCode, resultData, map, requiredPermission, serialized, sticky,
                    callingPid, callingUid, userId);
            Binder.restoreCallingIdentity(origId);
            return res;
        }
    }

    int broadcastIntentInPackage(String packageName, int uid,
            Intent intent, String resolvedType, IIntentReceiver resultTo,
            int resultCode, String resultData, Bundle map,
            String requiredPermission, boolean serialized, boolean sticky, int userId) {
        synchronized(this) {
            intent = verifyBroadcastLocked(intent);

            final long origId = Binder.clearCallingIdentity();
            int res = broadcastIntentLocked(null, packageName, intent, resolvedType,
                    resultTo, resultCode, resultData, map, requiredPermission,
                    serialized, sticky, -1, uid, userId);
            Binder.restoreCallingIdentity(origId);
            return res;
        }
    }

    public final void unbroadcastIntent(IApplicationThread caller, Intent intent, int userId) {
        // Refuse possible leaked file descriptors
        if (intent != null && intent.hasFileDescriptors() == true) {
            throw new IllegalArgumentException("File descriptors passed in Intent");
        }

        userId = handleIncomingUser(Binder.getCallingPid(),
                Binder.getCallingUid(), userId, true, false, "removeStickyBroadcast", null);

        synchronized(this) {
            if (checkCallingPermission(android.Manifest.permission.BROADCAST_STICKY)
                    != PackageManager.PERMISSION_GRANTED) {
                String msg = "Permission Denial: unbroadcastIntent() from pid="
                        + Binder.getCallingPid()
                        + ", uid=" + Binder.getCallingUid()
                        + " requires " + android.Manifest.permission.BROADCAST_STICKY;
                Slog.w(TAG, msg);
                throw new SecurityException(msg);
            }
            HashMap<String, ArrayList<Intent>> stickies = mStickyBroadcasts.get(userId);
            if (stickies != null) {
                ArrayList<Intent> list = stickies.get(intent.getAction());
                if (list != null) {
                    int N = list.size();
                    int i;
                    for (i=0; i<N; i++) {
                        if (intent.filterEquals(list.get(i))) {
                            list.remove(i);
                            break;
                        }
                    }
                    if (list.size() <= 0) {
                        stickies.remove(intent.getAction());
                    }
                }
                if (stickies.size() <= 0) {
                    mStickyBroadcasts.remove(userId);
                }
            }
        }
    }

    private final boolean finishReceiverLocked(IBinder receiver, int resultCode,
            String resultData, Bundle resultExtras, boolean resultAbort,
            boolean explicit) {
        final BroadcastRecord r = broadcastRecordForReceiverLocked(receiver);
        if (r == null) {
            Slog.w(TAG, "finishReceiver called but not found on queue");
            return false;
        }

        return r.queue.finishReceiverLocked(r, resultCode, resultData, resultExtras, resultAbort,
                explicit);
    }

    public void finishReceiver(IBinder who, int resultCode, String resultData,
            Bundle resultExtras, boolean resultAbort) {
        if (DEBUG_BROADCAST) Slog.v(TAG, "Finish receiver: " + who);

        // Refuse possible leaked file descriptors
        if (resultExtras != null && resultExtras.hasFileDescriptors()) {
            throw new IllegalArgumentException("File descriptors passed in Bundle");
        }

        final long origId = Binder.clearCallingIdentity();
        try {
            boolean doNext = false;
            BroadcastRecord r = null;

            synchronized(this) {
                r = broadcastRecordForReceiverLocked(who);
                if (r != null) {
                    doNext = r.queue.finishReceiverLocked(r, resultCode,
                        resultData, resultExtras, resultAbort, true);
                }
            }

            if (doNext) {
                r.queue.processNextBroadcast(false);
            }
            trimApplications();
        } finally {
            Binder.restoreCallingIdentity(origId);
        }
    }
    
    // =========================================================
    // INSTRUMENTATION
    // =========================================================

    public boolean startInstrumentation(ComponentName className,
            String profileFile, int flags, Bundle arguments,
            IInstrumentationWatcher watcher, IUiAutomationConnection uiAutomationConnection,
            int userId) {
        enforceNotIsolatedCaller("startInstrumentation");
        userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(),
                userId, false, true, "startInstrumentation", null);
        // Refuse possible leaked file descriptors
        if (arguments != null && arguments.hasFileDescriptors()) {
            throw new IllegalArgumentException("File descriptors passed in Bundle");
        }

        synchronized(this) {
            InstrumentationInfo ii = null;
            ApplicationInfo ai = null;
            try {
                ii = mContext.getPackageManager().getInstrumentationInfo(
                    className, STOCK_PM_FLAGS);
                ai = AppGlobals.getPackageManager().getApplicationInfo(
                        ii.targetPackage, STOCK_PM_FLAGS, userId);
            } catch (PackageManager.NameNotFoundException e) {
            } catch (RemoteException e) {
            }
            if (ii == null) {
                reportStartInstrumentationFailure(watcher, className,
                        "Unable to find instrumentation info for: " + className);
                return false;
            }
            if (ai == null) {
                reportStartInstrumentationFailure(watcher, className,
                        "Unable to find instrumentation target package: " + ii.targetPackage);
                return false;
            }

            int match = mContext.getPackageManager().checkSignatures(
                    ii.targetPackage, ii.packageName);
            if (match < 0 && match != PackageManager.SIGNATURE_FIRST_NOT_SIGNED) {
                String msg = "Permission Denial: starting instrumentation "
                        + className + " from pid="
                        + Binder.getCallingPid()
                        + ", uid=" + Binder.getCallingPid()
                        + " not allowed because package " + ii.packageName
                        + " does not have a signature matching the target "
                        + ii.targetPackage;
                reportStartInstrumentationFailure(watcher, className, msg);
                throw new SecurityException(msg);
            }

            final long origId = Binder.clearCallingIdentity();
            // Instrumentation can kill and relaunch even persistent processes
            forceStopPackageLocked(ii.targetPackage, -1, true, false, true, true, userId);
            ProcessRecord app = addAppLocked(ai, false);
            app.instrumentationClass = className;
            app.instrumentationInfo = ai;
            app.instrumentationProfileFile = profileFile;
            app.instrumentationArguments = arguments;
            app.instrumentationWatcher = watcher;
            app.instrumentationUiAutomationConnection = uiAutomationConnection;
            app.instrumentationResultClass = className;
            Binder.restoreCallingIdentity(origId);
        }

        return true;
    }
    
    /**
     * Report errors that occur while attempting to start Instrumentation.  Always writes the 
     * error to the logs, but if somebody is watching, send the report there too.  This enables
     * the "am" command to report errors with more information.
     * 
     * @param watcher The IInstrumentationWatcher.  Null if there isn't one.
     * @param cn The component name of the instrumentation.
     * @param report The error report.
     */
    private void reportStartInstrumentationFailure(IInstrumentationWatcher watcher, 
            ComponentName cn, String report) {
        Slog.w(TAG, report);
        try {
            if (watcher != null) {
                Bundle results = new Bundle();
                results.putString(Instrumentation.REPORT_KEY_IDENTIFIER, "ActivityManagerService");
                results.putString("Error", report);
                watcher.instrumentationStatus(cn, -1, results);
            }
        } catch (RemoteException e) {
            Slog.w(TAG, e);
        }
    }

    void finishInstrumentationLocked(ProcessRecord app, int resultCode, Bundle results) {
        if (app.instrumentationWatcher != null) {
            try {
                // NOTE:  IInstrumentationWatcher *must* be oneway here
                app.instrumentationWatcher.instrumentationFinished(
                    app.instrumentationClass,
                    resultCode,
                    results);
            } catch (RemoteException e) {
            }
        }
        if (app.instrumentationUiAutomationConnection != null) {
            try {
                app.instrumentationUiAutomationConnection.shutdown();
            } catch (RemoteException re) {
                /* ignore */
            }
        }
        app.instrumentationWatcher = null;
        app.instrumentationUiAutomationConnection = null;
        app.instrumentationClass = null;
        app.instrumentationInfo = null;
        app.instrumentationProfileFile = null;
        app.instrumentationArguments = null;

        forceStopPackageLocked(app.info.packageName, -1, false, false, true, true, app.userId);
    }

    public void finishInstrumentation(IApplicationThread target,
            int resultCode, Bundle results) {
        int userId = UserHandle.getCallingUserId();
        // Refuse possible leaked file descriptors
        if (results != null && results.hasFileDescriptors()) {
            throw new IllegalArgumentException("File descriptors passed in Intent");
        }

        synchronized(this) {
            ProcessRecord app = getRecordForAppLocked(target);
            if (app == null) {
                Slog.w(TAG, "finishInstrumentation: no app for " + target);
                return;
            }
            final long origId = Binder.clearCallingIdentity();
            finishInstrumentationLocked(app, resultCode, results);
            Binder.restoreCallingIdentity(origId);
        }
    }

    // =========================================================
    // CONFIGURATION
    // =========================================================
    
    public ConfigurationInfo getDeviceConfigurationInfo() {
        ConfigurationInfo config = new ConfigurationInfo();
        synchronized (this) {
            config.reqTouchScreen = mConfiguration.touchscreen;
            config.reqKeyboardType = mConfiguration.keyboard;
            config.reqNavigation = mConfiguration.navigation;
            if (mConfiguration.navigation == Configuration.NAVIGATION_DPAD
                    || mConfiguration.navigation == Configuration.NAVIGATION_TRACKBALL) {
                config.reqInputFeatures |= ConfigurationInfo.INPUT_FEATURE_FIVE_WAY_NAV;
            }
            if (mConfiguration.keyboard != Configuration.KEYBOARD_UNDEFINED
                    && mConfiguration.keyboard != Configuration.KEYBOARD_NOKEYS) {
                config.reqInputFeatures |= ConfigurationInfo.INPUT_FEATURE_HARD_KEYBOARD;
            }
            config.reqGlEsVersion = GL_ES_VERSION;
        }
        return config;
    }

    public Configuration getConfiguration() {
        Configuration ci;
        synchronized(this) {
            ci = new Configuration(mConfiguration);
        }
        return ci;
    }

    public void updatePersistentConfiguration(Configuration values) {
        enforceCallingPermission(android.Manifest.permission.CHANGE_CONFIGURATION,
                "updateConfiguration()");
        enforceCallingPermission(android.Manifest.permission.WRITE_SETTINGS,
                "updateConfiguration()");
        if (values == null) {
            throw new NullPointerException("Configuration must not be null");
        }

        synchronized(this) {
            final long origId = Binder.clearCallingIdentity();
            updateConfigurationLocked(values, null, true, false);
            Binder.restoreCallingIdentity(origId);
        }
    }

    public void updateConfiguration(Configuration values) {
        enforceCallingPermission(android.Manifest.permission.CHANGE_CONFIGURATION,
                "updateConfiguration()");

        synchronized(this) {
            if (values == null && mWindowManager != null) {
                // sentinel: fetch the current configuration from the window manager
                values = mWindowManager.computeNewConfiguration();
            }

            if (mWindowManager != null) {
                mProcessList.applyDisplaySize(mWindowManager);
            }

            final long origId = Binder.clearCallingIdentity();
            if (values != null) {
                Settings.System.clearConfiguration(values);
            }
            updateConfigurationLocked(values, null, false, false);
            Binder.restoreCallingIdentity(origId);
        }
    }

    /**
     * Do either or both things: (1) change the current configuration, and (2)
     * make sure the given activity is running with the (now) current
     * configuration.  Returns true if the activity has been left running, or
     * false if <var>starting</var> is being destroyed to match the new
     * configuration.
     * @param persistent TODO
     */
    boolean updateConfigurationLocked(Configuration values,
            ActivityRecord starting, boolean persistent, boolean initLocale) {
        // do nothing if we are headless
        if (mHeadless) return true;

        int changes = 0;
        
        boolean kept = true;
        
        if (values != null) {
            Configuration newConfig = new Configuration(mConfiguration);
            changes = newConfig.updateFrom(values);
            if (changes != 0) {
                if (DEBUG_SWITCH || DEBUG_CONFIGURATION) {
                    Slog.i(TAG, "Updating configuration to: " + values);
                }
                
                EventLog.writeEvent(EventLogTags.CONFIGURATION_CHANGED, changes);

                if (values.locale != null && !initLocale) {
                    saveLocaleLocked(values.locale, 
                                     !values.locale.equals(mConfiguration.locale),
                                     values.userSetLocale);
                }

                mConfigurationSeq++;
                if (mConfigurationSeq <= 0) {
                    mConfigurationSeq = 1;
                }
                newConfig.seq = mConfigurationSeq;
                mConfiguration = newConfig;
                Slog.i(TAG, "Config changes=" + Integer.toHexString(changes) + " " + newConfig);

                final Configuration configCopy = new Configuration(mConfiguration);
                
                // TODO: If our config changes, should we auto dismiss any currently
                // showing dialogs?
                mShowDialogs = shouldShowDialogs(newConfig);

                AttributeCache ac = AttributeCache.instance();
                if (ac != null) {
                    ac.updateConfiguration(configCopy);
                }

                // Make sure all resources in our process are updated
                // right now, so that anyone who is going to retrieve
                // resource values after we return will be sure to get
                // the new ones.  This is especially important during
                // boot, where the first config change needs to guarantee
                // all resources have that config before following boot
                // code is executed.
                mSystemThread.applyConfigurationToResources(configCopy);

                if (persistent && Settings.System.hasInterestingConfigurationChanges(changes)) {
                    Message msg = mHandler.obtainMessage(UPDATE_CONFIGURATION_MSG);
                    msg.obj = new Configuration(configCopy);
                    mHandler.sendMessage(msg);
                }
        
                for (int i=mLruProcesses.size()-1; i>=0; i--) {
                    ProcessRecord app = mLruProcesses.get(i);
                    try {
                        if (app.thread != null) {
                            if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending to proc "
                                    + app.processName + " new config " + mConfiguration);
                            app.thread.scheduleConfigurationChanged(configCopy);
                        }
                    } catch (Exception e) {
                    }
                }
                Intent intent = new Intent(Intent.ACTION_CONFIGURATION_CHANGED);
                intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY
                        | Intent.FLAG_RECEIVER_REPLACE_PENDING
                        | Intent.FLAG_RECEIVER_FOREGROUND);
                broadcastIntentLocked(null, null, intent, null, null, 0, null, null,
                        null, false, false, MY_PID, Process.SYSTEM_UID, UserHandle.USER_ALL);
                if ((changes&ActivityInfo.CONFIG_LOCALE) != 0) {
                    intent = new Intent(Intent.ACTION_LOCALE_CHANGED);
                    intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);
                    broadcastIntentLocked(null, null, intent,
                            null, null, 0, null, null,
                            null, false, false, MY_PID, Process.SYSTEM_UID, UserHandle.USER_ALL);
                }
            }
        }
        
        if (changes != 0 && starting == null) {
            // If the configuration changed, and the caller is not already
            // in the process of starting an activity, then find the top
            // activity to check if its configuration needs to change.
            starting = mMainStack.topRunningActivityLocked(null);
        }
        
        if (starting != null) {
            kept = mMainStack.ensureActivityConfigurationLocked(starting, changes);
            // And we need to make sure at this point that all other activities
            // are made visible with the correct configuration.
            mMainStack.ensureActivitiesVisibleLocked(starting, changes);
        }
        
        if (values != null && mWindowManager != null) {
            mWindowManager.setNewConfiguration(mConfiguration);
        }
        
        return kept;
    }

    /**
     * Decide based on the configuration whether we should shouw the ANR,
     * crash, etc dialogs.  The idea is that if there is no affordnace to
     * press the on-screen buttons, we shouldn't show the dialog.
     *
     * A thought: SystemUI might also want to get told about this, the Power
     * dialog / global actions also might want different behaviors.
     */
    private static final boolean shouldShowDialogs(Configuration config) {
        return !(config.keyboard == Configuration.KEYBOARD_NOKEYS
                && config.touchscreen == Configuration.TOUCHSCREEN_NOTOUCH);
    }
    
    /**
     * Save the locale.  You must be inside a synchronized (this) block.
     */
    private void saveLocaleLocked(Locale l, boolean isDiff, boolean isPersist) {
        if(isDiff) {
            SystemProperties.set("user.language", l.getLanguage());
            SystemProperties.set("user.region", l.getCountry());
        } 

        if(isPersist) {
            SystemProperties.set("persist.sys.language", l.getLanguage());
            SystemProperties.set("persist.sys.country", l.getCountry());
            SystemProperties.set("persist.sys.localevar", l.getVariant());
        }
    }

    @Override
    public boolean targetTaskAffinityMatchesActivity(IBinder token, String destAffinity) {
        ActivityRecord srec = ActivityRecord.forToken(token);
        return srec != null && srec.task.affinity != null &&
                srec.task.affinity.equals(destAffinity);
    }

    public boolean navigateUpTo(IBinder token, Intent destIntent, int resultCode,
            Intent resultData) {
        ComponentName dest = destIntent.getComponent();

        synchronized (this) {
            ActivityRecord srec = ActivityRecord.forToken(token);
            if (srec == null) {
                return false;
            }
            ArrayList<ActivityRecord> history = srec.stack.mHistory;
            final int start = history.indexOf(srec);
            if (start < 0) {
                // Current activity is not in history stack; do nothing.
                return false;
            }
            int finishTo = start - 1;
            ActivityRecord parent = null;
            boolean foundParentInTask = false;
            if (dest != null) {
                TaskRecord tr = srec.task;
                for (int i = start - 1; i >= 0; i--) {
                    ActivityRecord r = history.get(i);
                    if (tr != r.task) {
                        // Couldn't find parent in the same task; stop at the one above this.
                        // (Root of current task; in-app "home" behavior)
                        // Always at least finish the current activity.
                        finishTo = Math.min(start - 1, i + 1);
                        parent = history.get(finishTo);
                        break;
                    } else if (r.info.packageName.equals(dest.getPackageName()) &&
                            r.info.name.equals(dest.getClassName())) {
                        finishTo = i;
                        parent = r;
                        foundParentInTask = true;
                        break;
                    }
                }
            }

            if (mController != null) {
                ActivityRecord next = mMainStack.topRunningActivityLocked(token, 0);
                if (next != null) {
                    // ask watcher if this is allowed
                    boolean resumeOK = true;
                    try {
                        resumeOK = mController.activityResuming(next.packageName);
                    } catch (RemoteException e) {
                        mController = null;
                    }

                    if (!resumeOK) {
                        return false;
                    }
                }
            }
            final long origId = Binder.clearCallingIdentity();
            for (int i = start; i > finishTo; i--) {
                ActivityRecord r = history.get(i);
                mMainStack.requestFinishActivityLocked(r.appToken, resultCode, resultData,
                        "navigate-up", true);
                // Only return the supplied result for the first activity finished
                resultCode = Activity.RESULT_CANCELED;
                resultData = null;
            }

            if (parent != null && foundParentInTask) {
                final int parentLaunchMode = parent.info.launchMode;
                final int destIntentFlags = destIntent.getFlags();
                if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE ||
                        parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK ||
                        parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP ||
                        (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) {
                    parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent);
                } else {
                    try {
                        ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo(
                                destIntent.getComponent(), 0, srec.userId);
                        int res = mMainStack.startActivityLocked(srec.app.thread, destIntent,
                                null, aInfo, parent.appToken, null,
                                0, -1, parent.launchedFromUid, parent.launchedFromPackage,
                                0, null, true, null);
                        foundParentInTask = res == ActivityManager.START_SUCCESS;
                    } catch (RemoteException e) {
                        foundParentInTask = false;
                    }
                    mMainStack.requestFinishActivityLocked(parent.appToken, resultCode,
                            resultData, "navigate-up", true);
                }
            }
            Binder.restoreCallingIdentity(origId);
            return foundParentInTask;
        }
    }

    public int getLaunchedFromUid(IBinder activityToken) {
        ActivityRecord srec = ActivityRecord.forToken(activityToken);
        if (srec == null) {
            return -1;
        }
        return srec.launchedFromUid;
    }

    public String getLaunchedFromPackage(IBinder activityToken) {
        ActivityRecord srec = ActivityRecord.forToken(activityToken);
        if (srec == null) {
            return null;
        }
        return srec.launchedFromPackage;
    }

    // =========================================================
    // LIFETIME MANAGEMENT
    // =========================================================

    // Returns which broadcast queue the app is the current [or imminent] receiver
    // on, or 'null' if the app is not an active broadcast recipient.
    private BroadcastQueue isReceivingBroadcast(ProcessRecord app) {
        BroadcastRecord r = app.curReceiver;
        if (r != null) {
            return r.queue;
        }

        // It's not the current receiver, but it might be starting up to become one
        synchronized (this) {
            for (BroadcastQueue queue : mBroadcastQueues) {
                r = queue.mPendingBroadcast;
                if (r != null && r.curApp == app) {
                    // found it; report which queue it's in
                    return queue;
                }
            }
        }

        return null;
    }

    private final int computeOomAdjLocked(ProcessRecord app, int hiddenAdj, int clientHiddenAdj,
            int emptyAdj, ProcessRecord TOP_APP, boolean recursed, boolean doingAll) {
        if (mAdjSeq == app.adjSeq) {
            // This adjustment has already been computed.  If we are calling
            // from the top, we may have already computed our adjustment with
            // an earlier hidden adjustment that isn't really for us... if
            // so, use the new hidden adjustment.
            if (!recursed && app.hidden) {
                if (app.hasActivities) {
                    app.curAdj = app.curRawAdj = app.nonStoppingAdj = hiddenAdj;
                } else if (app.hasClientActivities) {
                    app.curAdj = app.curRawAdj = app.nonStoppingAdj = clientHiddenAdj;
                } else {
                    app.curAdj = app.curRawAdj = app.nonStoppingAdj = emptyAdj;
                }
            }
            return app.curRawAdj;
        }

        if (app.thread == null) {
            app.adjSeq = mAdjSeq;
            app.curSchedGroup = Process.THREAD_GROUP_BG_NONINTERACTIVE;
            return (app.curAdj=app.curRawAdj=ProcessList.HIDDEN_APP_MAX_ADJ);
        }

        app.adjTypeCode = ActivityManager.RunningAppProcessInfo.REASON_UNKNOWN;
        app.adjSource = null;
        app.adjTarget = null;
        app.empty = false;
        app.hidden = false;
        app.hasClientActivities = false;

        final int activitiesSize = app.activities.size();

        if (app.maxAdj <= ProcessList.FOREGROUND_APP_ADJ) {
            // The max adjustment doesn't allow this app to be anything
            // below foreground, so it is not worth doing work for it.
            app.adjType = "fixed";
            app.adjSeq = mAdjSeq;
            app.curRawAdj = app.nonStoppingAdj = app.maxAdj;
            app.hasActivities = false;
            app.foregroundActivities = false;
            app.keeping = true;
            app.curSchedGroup = Process.THREAD_GROUP_DEFAULT;
            // System process can do UI, and when they do we want to have
            // them trim their memory after the user leaves the UI.  To
            // facilitate this, here we need to determine whether or not it
            // is currently showing UI.
            app.systemNoUi = true;
            if (app == TOP_APP) {
                app.systemNoUi = false;
                app.hasActivities = true;
            } else if (activitiesSize > 0) {
                for (int j = 0; j < activitiesSize; j++) {
                    final ActivityRecord r = app.activities.get(j);
                    if (r.visible) {
                        app.systemNoUi = false;
                    }
                    if (r.app == app) {
                        app.hasActivities = true;
                    }
                }
            }
            return (app.curAdj=app.maxAdj);
        }

        app.keeping = false;
        app.systemNoUi = false;
        app.hasActivities = false;

        // Determine the importance of the process, starting with most
        // important to least, and assign an appropriate OOM adjustment.
        int adj;
        int schedGroup;
        boolean foregroundActivities = false;
        boolean interesting = false;
        BroadcastQueue queue;
        if (app == TOP_APP) {
            // The last app on the list is the foreground app.
            adj = ProcessList.FOREGROUND_APP_ADJ;
            schedGroup = Process.THREAD_GROUP_DEFAULT;
            app.adjType = "top-activity";
            foregroundActivities = true;
            interesting = true;
            app.hasActivities = true;
        } else if (app.instrumentationClass != null) {
            // Don't want to kill running instrumentation.
            adj = ProcessList.FOREGROUND_APP_ADJ;
            schedGroup = Process.THREAD_GROUP_DEFAULT;
            app.adjType = "instrumentation";
            interesting = true;
        } else if ((queue = isReceivingBroadcast(app)) != null) {
            // An app that is currently receiving a broadcast also
            // counts as being in the foreground for OOM killer purposes.
            // It's placed in a sched group based on the nature of the
            // broadcast as reflected by which queue it's active in.
            adj = ProcessList.FOREGROUND_APP_ADJ;
            schedGroup = (queue == mFgBroadcastQueue)
                    ? Process.THREAD_GROUP_DEFAULT : Process.THREAD_GROUP_BG_NONINTERACTIVE;
            app.adjType = "broadcast";
        } else if (app.executingServices.size() > 0) {
            // An app that is currently executing a service callback also
            // counts as being in the foreground.
            adj = ProcessList.FOREGROUND_APP_ADJ;
            schedGroup = Process.THREAD_GROUP_DEFAULT;
            app.adjType = "exec-service";
        } else {
            // Assume process is hidden (has activities); we will correct
            // later if this is not the case.
            adj = hiddenAdj;
            schedGroup = Process.THREAD_GROUP_BG_NONINTERACTIVE;
            app.hidden = true;
            app.adjType = "bg-act";
        }

        boolean hasStoppingActivities = false;

        // Examine all activities if not already foreground.
        if (!foregroundActivities && activitiesSize > 0) {
            for (int j = 0; j < activitiesSize; j++) {
                final ActivityRecord r = app.activities.get(j);
                if (r.visible) {
                    // App has a visible activity; only upgrade adjustment.
                    if (adj > ProcessList.VISIBLE_APP_ADJ) {
                        adj = ProcessList.VISIBLE_APP_ADJ;
                        app.adjType = "visible";
                    }
                    schedGroup = Process.THREAD_GROUP_DEFAULT;
                    app.hidden = false;
                    app.hasActivities = true;
                    foregroundActivities = true;
                    break;
                } else if (r.state == ActivityState.PAUSING || r.state == ActivityState.PAUSED) {
                    if (adj > ProcessList.PERCEPTIBLE_APP_ADJ) {
                        adj = ProcessList.PERCEPTIBLE_APP_ADJ;
                        app.adjType = "pausing";
                    }
                    app.hidden = false;
                    foregroundActivities = true;
                } else if (r.state == ActivityState.STOPPING) {
                    // We will apply the actual adjustment later, because
                    // we want to allow this process to immediately go through
                    // any memory trimming that is in effect.
                    app.hidden = false;
                    foregroundActivities = true;
                    hasStoppingActivities = true;
                }
                if (r.app == app) {
                    app.hasActivities = true;
                }
            }
        }

        if (adj == hiddenAdj && !app.hasActivities) {
            if (app.hasClientActivities) {
                adj = clientHiddenAdj;
                app.adjType = "bg-client-act";
            } else {
                // Whoops, this process is completely empty as far as we know
                // at this point.
                adj = emptyAdj;
                app.empty = true;
                app.adjType = "bg-empty";
            }
        }

        if (adj > ProcessList.PERCEPTIBLE_APP_ADJ) {
            if (app.foregroundServices) {
                // The user is aware of this app, so make it visible.
                adj = ProcessList.PERCEPTIBLE_APP_ADJ;
                app.hidden = false;
                app.adjType = "fg-service";
                schedGroup = Process.THREAD_GROUP_DEFAULT;
            } else if (app.forcingToForeground != null) {
                // The user is aware of this app, so make it visible.
                adj = ProcessList.PERCEPTIBLE_APP_ADJ;
                app.hidden = false;
                app.adjType = "force-fg";
                app.adjSource = app.forcingToForeground;
                schedGroup = Process.THREAD_GROUP_DEFAULT;
            }
        }

        if (app.foregroundServices) {
            interesting = true;
        }

        if (adj > ProcessList.HEAVY_WEIGHT_APP_ADJ && app == mHeavyWeightProcess) {
            // We don't want to kill the current heavy-weight process.
            adj = ProcessList.HEAVY_WEIGHT_APP_ADJ;
            schedGroup = Process.THREAD_GROUP_BG_NONINTERACTIVE;
            app.hidden = false;
            app.adjType = "heavy";
        }

        if (adj > ProcessList.HOME_APP_ADJ && app == mHomeProcess) {
            // This process is hosting what we currently consider to be the
            // home app, so we don't want to let it go into the background.
            adj = ProcessList.HOME_APP_ADJ;
            schedGroup = Process.THREAD_GROUP_BG_NONINTERACTIVE;
            app.hidden = false;
            app.adjType = "home";
        }

        if (adj > ProcessList.PREVIOUS_APP_ADJ && app == mPreviousProcess
                && app.activities.size() > 0) {
            // This was the previous process that showed UI to the user.
            // We want to try to keep it around more aggressively, to give
            // a good experience around switching between two apps.
            adj = ProcessList.PREVIOUS_APP_ADJ;
            schedGroup = Process.THREAD_GROUP_BG_NONINTERACTIVE;
            app.hidden = false;
            app.adjType = "previous";
        }

        if (false) Slog.i(TAG, "OOM " + app + ": initial adj=" + adj
                + " reason=" + app.adjType);

        // By default, we use the computed adjustment.  It may be changed if
        // there are applications dependent on our services or providers, but
        // this gives us a baseline and makes sure we don't get into an
        // infinite recursion.
        app.adjSeq = mAdjSeq;
        app.curRawAdj = app.nonStoppingAdj = adj;

        if (mBackupTarget != null && app == mBackupTarget.app) {
            // If possible we want to avoid killing apps while they're being backed up
            if (adj > ProcessList.BACKUP_APP_ADJ) {
                if (DEBUG_BACKUP) Slog.v(TAG, "oom BACKUP_APP_ADJ for " + app);
                adj = ProcessList.BACKUP_APP_ADJ;
                app.adjType = "backup";
                app.hidden = false;
            }
        }

        if (app.services.size() != 0 && (adj > ProcessList.FOREGROUND_APP_ADJ
                || schedGroup == Process.THREAD_GROUP_BG_NONINTERACTIVE)) {
            final long now = SystemClock.uptimeMillis();
            // This process is more important if the top activity is
            // bound to the service.
            Iterator<ServiceRecord> jt = app.services.iterator();
            while (jt.hasNext() && adj > ProcessList.FOREGROUND_APP_ADJ) {
                ServiceRecord s = jt.next();
                if (s.startRequested) {
                    if (app.hasShownUi && app != mHomeProcess) {
                        // If this process has shown some UI, let it immediately
                        // go to the LRU list because it may be pretty heavy with
                        // UI stuff.  We'll tag it with a label just to help
                        // debug and understand what is going on.
                        if (adj > ProcessList.SERVICE_ADJ) {
                            app.adjType = "started-bg-ui-services";
                        }
                    } else {
                        if (now < (s.lastActivity + ActiveServices.MAX_SERVICE_INACTIVITY)) {
                            // This service has seen some activity within
                            // recent memory, so we will keep its process ahead
                            // of the background processes.
                            if (adj > ProcessList.SERVICE_ADJ) {
                                adj = ProcessList.SERVICE_ADJ;
                                app.adjType = "started-services";
                                app.hidden = false;
                            }
                        }
                        // If we have let the service slide into the background
                        // state, still have some text describing what it is doing
                        // even though the service no longer has an impact.
                        if (adj > ProcessList.SERVICE_ADJ) {
                            app.adjType = "started-bg-services";
                        }
                    }
                    // Don't kill this process because it is doing work; it
                    // has said it is doing work.
                    app.keeping = true;
                }
                if (s.connections.size() > 0 && (adj > ProcessList.FOREGROUND_APP_ADJ
                        || schedGroup == Process.THREAD_GROUP_BG_NONINTERACTIVE)) {
                    Iterator<ArrayList<ConnectionRecord>> kt
                            = s.connections.values().iterator();
                    while (kt.hasNext() && adj > ProcessList.FOREGROUND_APP_ADJ) {
                        ArrayList<ConnectionRecord> clist = kt.next();
                        for (int i=0; i<clist.size() && adj > ProcessList.FOREGROUND_APP_ADJ; i++) {
                            // XXX should compute this based on the max of
                            // all connected clients.
                            ConnectionRecord cr = clist.get(i);
                            if (cr.binding.client == app) {
                                // Binding to ourself is not interesting.
                                continue;
                            }
                            if ((cr.flags&Context.BIND_WAIVE_PRIORITY) == 0) {
                                ProcessRecord client = cr.binding.client;
                                int clientAdj = adj;
                                int myHiddenAdj = hiddenAdj;
                                if (myHiddenAdj > client.hiddenAdj) {
                                    if (client.hiddenAdj >= ProcessList.VISIBLE_APP_ADJ) {
                                        myHiddenAdj = client.hiddenAdj;
                                    } else {
                                        myHiddenAdj = ProcessList.VISIBLE_APP_ADJ;
                                    }
                                }
                                int myClientHiddenAdj = clientHiddenAdj;
                                if (myClientHiddenAdj > client.clientHiddenAdj) {
                                    if (client.clientHiddenAdj >= ProcessList.VISIBLE_APP_ADJ) {
                                        myClientHiddenAdj = client.clientHiddenAdj;
                                    } else {
                                        myClientHiddenAdj = ProcessList.VISIBLE_APP_ADJ;
                                    }
                                }
                                int myEmptyAdj = emptyAdj;
                                if (myEmptyAdj > client.emptyAdj) {
                                    if (client.emptyAdj >= ProcessList.VISIBLE_APP_ADJ) {
                                        myEmptyAdj = client.emptyAdj;
                                    } else {
                                        myEmptyAdj = ProcessList.VISIBLE_APP_ADJ;
                                    }
                                }
                                clientAdj = computeOomAdjLocked(client, myHiddenAdj,
                                        myClientHiddenAdj, myEmptyAdj, TOP_APP, true, doingAll);
                                String adjType = null;
                                if ((cr.flags&Context.BIND_ALLOW_OOM_MANAGEMENT) != 0) {
                                    // Not doing bind OOM management, so treat
                                    // this guy more like a started service.
                                    if (app.hasShownUi && app != mHomeProcess) {
                                        // If this process has shown some UI, let it immediately
                                        // go to the LRU list because it may be pretty heavy with
                                        // UI stuff.  We'll tag it with a label just to help
                                        // debug and understand what is going on.
                                        if (adj > clientAdj) {
                                            adjType = "bound-bg-ui-services";
                                        }
                                        app.hidden = false;
                                        clientAdj = adj;
                                    } else {
                                        if (now >= (s.lastActivity
                                                + ActiveServices.MAX_SERVICE_INACTIVITY)) {
                                            // This service has not seen activity within
                                            // recent memory, so allow it to drop to the
                                            // LRU list if there is no other reason to keep
                                            // it around.  We'll also tag it with a label just
                                            // to help debug and undertand what is going on.
                                            if (adj > clientAdj) {
                                                adjType = "bound-bg-services";
                                            }
                                            clientAdj = adj;
                                        }
                                    }
                                } else if ((cr.flags&Context.BIND_AUTO_CREATE) != 0) {
                                    if ((cr.flags&Context.BIND_NOT_VISIBLE) == 0) {
                                        // If this connection is keeping the service
                                        // created, then we want to try to better follow
                                        // its memory management semantics for activities.
                                        // That is, if it is sitting in the background
                                        // LRU list as a hidden process (with activities),
                                        // we don't want the service it is connected to
                                        // to go into the empty LRU and quickly get killed,
                                        // because I'll we'll do is just end up restarting
                                        // the service.
                                        app.hasClientActivities |= client.hasActivities;
                                    }
                                }
                                if (adj > clientAdj) {
                                    // If this process has recently shown UI, and
                                    // the process that is binding to it is less
                                    // important than being visible, then we don't
                                    // care about the binding as much as we care
                                    // about letting this process get into the LRU
                                    // list to be killed and restarted if needed for
                                    // memory.
                                    if (app.hasShownUi && app != mHomeProcess
                                            && clientAdj > ProcessList.PERCEPTIBLE_APP_ADJ) {
                                        adjType = "bound-bg-ui-services";
                                    } else {
                                        if ((cr.flags&(Context.BIND_ABOVE_CLIENT
                                                |Context.BIND_IMPORTANT)) != 0) {
                                            adj = clientAdj;
                                        } else if ((cr.flags&Context.BIND_NOT_VISIBLE) != 0
                                                && clientAdj < ProcessList.PERCEPTIBLE_APP_ADJ
                                                && adj > ProcessList.PERCEPTIBLE_APP_ADJ) {
                                            adj = ProcessList.PERCEPTIBLE_APP_ADJ;
                                        } else if (clientAdj > ProcessList.VISIBLE_APP_ADJ) {
                                            adj = clientAdj;
                                        } else {
                                            app.pendingUiClean = true;
                                            if (adj > ProcessList.VISIBLE_APP_ADJ) {
                                                adj = ProcessList.VISIBLE_APP_ADJ;
                                            }
                                        }
                                        if (!client.hidden) {
                                            app.hidden = false;
                                        }
                                        if (client.keeping) {
                                            app.keeping = true;
                                        }
                                        adjType = "service";
                                    }
                                }
                                if (adjType != null) {
                                    app.adjType = adjType;
                                    app.adjTypeCode = ActivityManager.RunningAppProcessInfo
                                            .REASON_SERVICE_IN_USE;
                                    app.adjSource = cr.binding.client;
                                    app.adjSourceOom = clientAdj;
                                    app.adjTarget = s.name;
                                }
                                if ((cr.flags&Context.BIND_NOT_FOREGROUND) == 0) {
                                    if (client.curSchedGroup == Process.THREAD_GROUP_DEFAULT) {
                                        schedGroup = Process.THREAD_GROUP_DEFAULT;
                                    }
                                }
                            }
                            final ActivityRecord a = cr.activity;
                            if ((cr.flags&Context.BIND_ADJUST_WITH_ACTIVITY) != 0) {
                                if (a != null && adj > ProcessList.FOREGROUND_APP_ADJ &&
                                        (a.visible || a.state == ActivityState.RESUMED
                                         || a.state == ActivityState.PAUSING)) {
                                    adj = ProcessList.FOREGROUND_APP_ADJ;
                                    if ((cr.flags&Context.BIND_NOT_FOREGROUND) == 0) {
                                        schedGroup = Process.THREAD_GROUP_DEFAULT;
                                    }
                                    app.hidden = false;
                                    app.adjType = "service";
                                    app.adjTypeCode = ActivityManager.RunningAppProcessInfo
                                            .REASON_SERVICE_IN_USE;
                                    app.adjSource = a;
                                    app.adjSourceOom = adj;
                                    app.adjTarget = s.name;
                                }
                            }
                        }
                    }
                }
            }
            
            // Finally, if this process has active services running in it, we
            // would like to avoid killing it unless it would prevent the current
            // application from running.  By default we put the process in
            // with the rest of the background processes; as we scan through
            // its services we may bump it up from there.
            if (adj > hiddenAdj) {
                adj = hiddenAdj;
                app.hidden = false;
                app.adjType = "bg-services";
            }
        }

        if (app.pubProviders.size() != 0 && (adj > ProcessList.FOREGROUND_APP_ADJ
                || schedGroup == Process.THREAD_GROUP_BG_NONINTERACTIVE)) {
            Iterator<ContentProviderRecord> jt = app.pubProviders.values().iterator();
            while (jt.hasNext() && (adj > ProcessList.FOREGROUND_APP_ADJ
                    || schedGroup == Process.THREAD_GROUP_BG_NONINTERACTIVE)) {
                ContentProviderRecord cpr = jt.next();
                for (int i = cpr.connections.size()-1;
                        i >= 0 && (adj > ProcessList.FOREGROUND_APP_ADJ
                                || schedGroup == Process.THREAD_GROUP_BG_NONINTERACTIVE);
                        i--) {
                    ContentProviderConnection conn = cpr.connections.get(i);
                    ProcessRecord client = conn.client;
                    if (client == app) {
                        // Being our own client is not interesting.
                        continue;
                    }
                    int myHiddenAdj = hiddenAdj;
                    if (myHiddenAdj > client.hiddenAdj) {
                        if (client.hiddenAdj > ProcessList.FOREGROUND_APP_ADJ) {
                            myHiddenAdj = client.hiddenAdj;
                        } else {
                            myHiddenAdj = ProcessList.FOREGROUND_APP_ADJ;
                        }
                    }
                    int myClientHiddenAdj = clientHiddenAdj;
                    if (myClientHiddenAdj > client.clientHiddenAdj) {
                        if (client.clientHiddenAdj >= ProcessList.FOREGROUND_APP_ADJ) {
                            myClientHiddenAdj = client.clientHiddenAdj;
                        } else {
                            myClientHiddenAdj = ProcessList.FOREGROUND_APP_ADJ;
                        }
                    }
                    int myEmptyAdj = emptyAdj;
                    if (myEmptyAdj > client.emptyAdj) {
                        if (client.emptyAdj > ProcessList.FOREGROUND_APP_ADJ) {
                            myEmptyAdj = client.emptyAdj;
                        } else {
                            myEmptyAdj = ProcessList.FOREGROUND_APP_ADJ;
                        }
                    }
                    int clientAdj = computeOomAdjLocked(client, myHiddenAdj,
                            myClientHiddenAdj, myEmptyAdj, TOP_APP, true, doingAll);
                    if (adj > clientAdj) {
                        if (app.hasShownUi && app != mHomeProcess
                                && clientAdj > ProcessList.PERCEPTIBLE_APP_ADJ) {
                            app.adjType = "bg-ui-provider";
                        } else {
                            adj = clientAdj > ProcessList.FOREGROUND_APP_ADJ
                                    ? clientAdj : ProcessList.FOREGROUND_APP_ADJ;
                            app.adjType = "provider";
                        }
                        if (!client.hidden) {
                            app.hidden = false;
                        }
                        if (client.keeping) {
                            app.keeping = true;
                        }
                        app.adjTypeCode = ActivityManager.RunningAppProcessInfo
                                .REASON_PROVIDER_IN_USE;
                        app.adjSource = client;
                        app.adjSourceOom = clientAdj;
                        app.adjTarget = cpr.name;
                    }
                    if (client.curSchedGroup == Process.THREAD_GROUP_DEFAULT) {
                        schedGroup = Process.THREAD_GROUP_DEFAULT;
                    }
                }
                // If the provider has external (non-framework) process
                // dependencies, ensure that its adjustment is at least
                // FOREGROUND_APP_ADJ.
                if (cpr.hasExternalProcessHandles()) {
                    if (adj > ProcessList.FOREGROUND_APP_ADJ) {
                        adj = ProcessList.FOREGROUND_APP_ADJ;
                        schedGroup = Process.THREAD_GROUP_DEFAULT;
                        app.hidden = false;
                        app.keeping = true;
                        app.adjType = "provider";
                        app.adjTarget = cpr.name;
                    }
                }
            }
        }

        if (adj == ProcessList.SERVICE_ADJ) {
            if (doingAll) {
                app.serviceb = mNewNumServiceProcs > (mNumServiceProcs/3);
                mNewNumServiceProcs++;
            }
            if (app.serviceb) {
                adj = ProcessList.SERVICE_B_ADJ;
            }
        } else {
            app.serviceb = false;
        }

        app.nonStoppingAdj = adj;

        if (hasStoppingActivities) {
            // Only upgrade adjustment.
            if (adj > ProcessList.PERCEPTIBLE_APP_ADJ) {
                adj = ProcessList.PERCEPTIBLE_APP_ADJ;
                app.adjType = "stopping";
            }
        }

        app.curRawAdj = adj;
        
        //Slog.i(TAG, "OOM ADJ " + app + ": pid=" + app.pid +
        //      " adj=" + adj + " curAdj=" + app.curAdj + " maxAdj=" + app.maxAdj);
        if (adj > app.maxAdj) {
            adj = app.maxAdj;
            if (app.maxAdj <= ProcessList.PERCEPTIBLE_APP_ADJ) {
                schedGroup = Process.THREAD_GROUP_DEFAULT;
            }
        }
        if (adj < ProcessList.HIDDEN_APP_MIN_ADJ) {
            app.keeping = true;
        }

        if (app.hasAboveClient) {
            // If this process has bound to any services with BIND_ABOVE_CLIENT,
            // then we need to drop its adjustment to be lower than the service's
            // in order to honor the request.  We want to drop it by one adjustment
            // level...  but there is special meaning applied to various levels so
            // we will skip some of them.
            if (adj < ProcessList.FOREGROUND_APP_ADJ) {
                // System process will not get dropped, ever
            } else if (adj < ProcessList.VISIBLE_APP_ADJ) {
                adj = ProcessList.VISIBLE_APP_ADJ;
            } else if (adj < ProcessList.PERCEPTIBLE_APP_ADJ) {
                adj = ProcessList.PERCEPTIBLE_APP_ADJ;
            } else if (adj < ProcessList.HIDDEN_APP_MIN_ADJ) {
                adj = ProcessList.HIDDEN_APP_MIN_ADJ;
            } else if (adj < ProcessList.HIDDEN_APP_MAX_ADJ) {
                adj++;
            }
        }

        int importance = app.memImportance;
        if (importance == 0 || adj != app.curAdj || schedGroup != app.curSchedGroup) {
            app.curAdj = adj;
            app.curSchedGroup = schedGroup;
            if (!interesting) {
                // For this reporting, if there is not something explicitly
                // interesting in this process then we will push it to the
                // background importance.
                importance = ActivityManager.RunningAppProcessInfo.IMPORTANCE_BACKGROUND;
            } else if (adj >= ProcessList.HIDDEN_APP_MIN_ADJ) {
                importance = ActivityManager.RunningAppProcessInfo.IMPORTANCE_BACKGROUND;
            } else if (adj >= ProcessList.SERVICE_B_ADJ) {
                importance =  ActivityManager.RunningAppProcessInfo.IMPORTANCE_SERVICE;
            } else if (adj >= ProcessList.HOME_APP_ADJ) {
                importance = ActivityManager.RunningAppProcessInfo.IMPORTANCE_BACKGROUND;
            } else if (adj >= ProcessList.SERVICE_ADJ) {
                importance = ActivityManager.RunningAppProcessInfo.IMPORTANCE_SERVICE;
            } else if (adj >= ProcessList.HEAVY_WEIGHT_APP_ADJ) {
                importance = ActivityManager.RunningAppProcessInfo.IMPORTANCE_CANT_SAVE_STATE;
            } else if (adj >= ProcessList.PERCEPTIBLE_APP_ADJ) {
                importance = ActivityManager.RunningAppProcessInfo.IMPORTANCE_PERCEPTIBLE;
            } else if (adj >= ProcessList.VISIBLE_APP_ADJ) {
                importance = ActivityManager.RunningAppProcessInfo.IMPORTANCE_VISIBLE;
            } else if (adj >= ProcessList.FOREGROUND_APP_ADJ) {
                importance = ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND;
            } else {
                importance = ActivityManager.RunningAppProcessInfo.IMPORTANCE_PERSISTENT;
            }
        }

        int changes = importance != app.memImportance ? ProcessChangeItem.CHANGE_IMPORTANCE : 0;
        if (foregroundActivities != app.foregroundActivities) {
            changes |= ProcessChangeItem.CHANGE_ACTIVITIES;
        }
        if (changes != 0) {
            if (DEBUG_PROCESS_OBSERVERS) Slog.i(TAG, "Changes in " + app + ": " + changes);
            app.memImportance = importance;
            app.foregroundActivities = foregroundActivities;
            int i = mPendingProcessChanges.size()-1;
            ProcessChangeItem item = null;
            while (i >= 0) {
                item = mPendingProcessChanges.get(i);
                if (item.pid == app.pid) {
                    if (DEBUG_PROCESS_OBSERVERS) Slog.i(TAG, "Re-using existing item: " + item);
                    break;
                }
                i--;
            }
            if (i < 0) {
                // No existing item in pending changes; need a new one.
                final int NA = mAvailProcessChanges.size();
                if (NA > 0) {
                    item = mAvailProcessChanges.remove(NA-1);
                    if (DEBUG_PROCESS_OBSERVERS) Slog.i(TAG, "Retreiving available item: " + item);
                } else {
                    item = new ProcessChangeItem();
                    if (DEBUG_PROCESS_OBSERVERS) Slog.i(TAG, "Allocating new item: " + item);
                }
                item.changes = 0;
                item.pid = app.pid;
                item.uid = app.info.uid;
                if (mPendingProcessChanges.size() == 0) {
                    if (DEBUG_PROCESS_OBSERVERS) Slog.i(TAG,
                            "*** Enqueueing dispatch processes changed!");
                    mHandler.obtainMessage(DISPATCH_PROCESSES_CHANGED).sendToTarget();
                }
                mPendingProcessChanges.add(item);
            }
            item.changes |= changes;
            item.importance = importance;
            item.foregroundActivities = foregroundActivities;
            if (DEBUG_PROCESS_OBSERVERS) Slog.i(TAG, "Item "
                    + Integer.toHexString(System.identityHashCode(item))
                    + " " + app.toShortString() + ": changes=" + item.changes
                    + " importance=" + item.importance
                    + " foreground=" + item.foregroundActivities
                    + " type=" + app.adjType + " source=" + app.adjSource
                    + " target=" + app.adjTarget);
        }

        return app.curRawAdj;
    }

    /**
     * Ask a given process to GC right now.
     */
    final void performAppGcLocked(ProcessRecord app) {
        try {
            app.lastRequestedGc = SystemClock.uptimeMillis();
            if (app.thread != null) {
                if (app.reportLowMemory) {
                    app.reportLowMemory = false;
                    app.thread.scheduleLowMemory();
                } else {
                    app.thread.processInBackground();
                }
            }
        } catch (Exception e) {
            // whatever.
        }
    }
    
    /**
     * Returns true if things are idle enough to perform GCs.
     */
    private final boolean canGcNowLocked() {
        boolean processingBroadcasts = false;
        for (BroadcastQueue q : mBroadcastQueues) {
            if (q.mParallelBroadcasts.size() != 0 || q.mOrderedBroadcasts.size() != 0) {
                processingBroadcasts = true;
            }
        }
        return !processingBroadcasts
                && (mSleeping || (mMainStack.mResumedActivity != null &&
                        mMainStack.mResumedActivity.idle));
    }
    
    /**
     * Perform GCs on all processes that are waiting for it, but only
     * if things are idle.
     */
    final void performAppGcsLocked() {
        final int N = mProcessesToGc.size();
        if (N <= 0) {
            return;
        }
        if (canGcNowLocked()) {
            while (mProcessesToGc.size() > 0) {
                ProcessRecord proc = mProcessesToGc.remove(0);
                if (proc.curRawAdj > ProcessList.PERCEPTIBLE_APP_ADJ || proc.reportLowMemory) {
                    if ((proc.lastRequestedGc+GC_MIN_INTERVAL)
                            <= SystemClock.uptimeMillis()) {
                        // To avoid spamming the system, we will GC processes one
                        // at a time, waiting a few seconds between each.
                        performAppGcLocked(proc);
                        scheduleAppGcsLocked();
                        return;
                    } else {
                        // It hasn't been long enough since we last GCed this
                        // process...  put it in the list to wait for its time.
                        addProcessToGcListLocked(proc);
                        break;
                    }
                }
            }
            
            scheduleAppGcsLocked();
        }
    }
    
    /**
     * If all looks good, perform GCs on all processes waiting for them.
     */
    final void performAppGcsIfAppropriateLocked() {
        if (canGcNowLocked()) {
            performAppGcsLocked();
            return;
        }
        // Still not idle, wait some more.
        scheduleAppGcsLocked();
    }

    /**
     * Schedule the execution of all pending app GCs.
     */
    final void scheduleAppGcsLocked() {
        mHandler.removeMessages(GC_BACKGROUND_PROCESSES_MSG);
        
        if (mProcessesToGc.size() > 0) {
            // Schedule a GC for the time to the next process.
            ProcessRecord proc = mProcessesToGc.get(0);
            Message msg = mHandler.obtainMessage(GC_BACKGROUND_PROCESSES_MSG);
            
            long when = proc.lastRequestedGc + GC_MIN_INTERVAL;
            long now = SystemClock.uptimeMillis();
            if (when < (now+GC_TIMEOUT)) {
                when = now + GC_TIMEOUT;
            }
            mHandler.sendMessageAtTime(msg, when);
        }
    }
    
    /**
     * Add a process to the array of processes waiting to be GCed.  Keeps the
     * list in sorted order by the last GC time.  The process can't already be
     * on the list.
     */
    final void addProcessToGcListLocked(ProcessRecord proc) {
        boolean added = false;
        for (int i=mProcessesToGc.size()-1; i>=0; i--) {
            if (mProcessesToGc.get(i).lastRequestedGc <
                    proc.lastRequestedGc) {
                added = true;
                mProcessesToGc.add(i+1, proc);
                break;
            }
        }
        if (!added) {
            mProcessesToGc.add(0, proc);
        }
    }
    
    /**
     * Set up to ask a process to GC itself.  This will either do it
     * immediately, or put it on the list of processes to gc the next
     * time things are idle.
     */
    final void scheduleAppGcLocked(ProcessRecord app) {
        long now = SystemClock.uptimeMillis();
        if ((app.lastRequestedGc+GC_MIN_INTERVAL) > now) {
            return;
        }
        if (!mProcessesToGc.contains(app)) {
            addProcessToGcListLocked(app);
            scheduleAppGcsLocked();
        }
    }

    final void checkExcessivePowerUsageLocked(boolean doKills) {
        updateCpuStatsNow();

        BatteryStatsImpl stats = mBatteryStatsService.getActiveStatistics();
        boolean doWakeKills = doKills;
        boolean doCpuKills = doKills;
        if (mLastPowerCheckRealtime == 0) {
            doWakeKills = false;
        }
        if (mLastPowerCheckUptime == 0) {
            doCpuKills = false;
        }
        if (stats.isScreenOn()) {
            doWakeKills = false;
        }
        final long curRealtime = SystemClock.elapsedRealtime();
        final long realtimeSince = curRealtime - mLastPowerCheckRealtime;
        final long curUptime = SystemClock.uptimeMillis();
        final long uptimeSince = curUptime - mLastPowerCheckUptime;
        mLastPowerCheckRealtime = curRealtime;
        mLastPowerCheckUptime = curUptime;
        if (realtimeSince < WAKE_LOCK_MIN_CHECK_DURATION) {
            doWakeKills = false;
        }
        if (uptimeSince < CPU_MIN_CHECK_DURATION) {
            doCpuKills = false;
        }
        int i = mLruProcesses.size();
        while (i > 0) {
            i--;
            ProcessRecord app = mLruProcesses.get(i);
            if (!app.keeping) {
                long wtime;
                synchronized (stats) {
                    wtime = stats.getProcessWakeTime(app.info.uid,
                            app.pid, curRealtime);
                }
                long wtimeUsed = wtime - app.lastWakeTime;
                long cputimeUsed = app.curCpuTime - app.lastCpuTime;
                if (DEBUG_POWER) {
                    StringBuilder sb = new StringBuilder(128);
                    sb.append("Wake for ");
                    app.toShortString(sb);
                    sb.append(": over ");
                    TimeUtils.formatDuration(realtimeSince, sb);
                    sb.append(" used ");
                    TimeUtils.formatDuration(wtimeUsed, sb);
                    sb.append(" (");
                    sb.append((wtimeUsed*100)/realtimeSince);
                    sb.append("%)");
                    Slog.i(TAG, sb.toString());
                    sb.setLength(0);
                    sb.append("CPU for ");
                    app.toShortString(sb);
                    sb.append(": over ");
                    TimeUtils.formatDuration(uptimeSince, sb);
                    sb.append(" used ");
                    TimeUtils.formatDuration(cputimeUsed, sb);
                    sb.append(" (");
                    sb.append((cputimeUsed*100)/uptimeSince);
                    sb.append("%)");
                    Slog.i(TAG, sb.toString());
                }
                // If a process has held a wake lock for more
                // than 50% of the time during this period,
                // that sounds bad.  Kill!
                if (doWakeKills && realtimeSince > 0
                        && ((wtimeUsed*100)/realtimeSince) >= 50) {
                    synchronized (stats) {
                        stats.reportExcessiveWakeLocked(app.info.uid, app.processName,
                                realtimeSince, wtimeUsed);
                    }
                    Slog.w(TAG, "Excessive wake lock in " + app.processName
                            + " (pid " + app.pid + "): held " + wtimeUsed
                            + " during " + realtimeSince);
                    EventLog.writeEvent(EventLogTags.AM_KILL, app.userId, app.pid,
                            app.processName, app.setAdj, "excessive wake lock");
                    Process.killProcessQuiet(app.pid);
                } else if (doCpuKills && uptimeSince > 0
                        && ((cputimeUsed*100)/uptimeSince) >= 50) {
                    synchronized (stats) {
                        stats.reportExcessiveCpuLocked(app.info.uid, app.processName,
                                uptimeSince, cputimeUsed);
                    }
                    Slog.w(TAG, "Excessive CPU in " + app.processName
                            + " (pid " + app.pid + "): used " + cputimeUsed
                            + " during " + uptimeSince);
                    EventLog.writeEvent(EventLogTags.AM_KILL, app.userId, app.pid,
                            app.processName, app.setAdj, "excessive cpu");
                    Process.killProcessQuiet(app.pid);
                } else {
                    app.lastWakeTime = wtime;
                    app.lastCpuTime = app.curCpuTime;
                }
            }
        }
    }

    private final boolean updateOomAdjLocked(ProcessRecord app, int hiddenAdj,
            int clientHiddenAdj, int emptyAdj, ProcessRecord TOP_APP, boolean doingAll) {
        app.hiddenAdj = hiddenAdj;
        app.clientHiddenAdj = clientHiddenAdj;
        app.emptyAdj = emptyAdj;

        if (app.thread == null) {
            return false;
        }

        final boolean wasKeeping = app.keeping;

        boolean success = true;

        computeOomAdjLocked(app, hiddenAdj, clientHiddenAdj, emptyAdj, TOP_APP, false, doingAll);

        if (app.curRawAdj != app.setRawAdj) {
            if (wasKeeping && !app.keeping) {
                // This app is no longer something we want to keep.  Note
                // its current wake lock time to later know to kill it if
                // it is not behaving well.
                BatteryStatsImpl stats = mBatteryStatsService.getActiveStatistics();
                synchronized (stats) {
                    app.lastWakeTime = stats.getProcessWakeTime(app.info.uid,
                            app.pid, SystemClock.elapsedRealtime());
                }
                app.lastCpuTime = app.curCpuTime;
            }

            app.setRawAdj = app.curRawAdj;
        }

        if (app.curAdj != app.setAdj) {
            if (Process.setOomAdj(app.pid, app.curAdj)) {
                if (DEBUG_SWITCH || DEBUG_OOM_ADJ) Slog.v(
                    TAG, "Set " + app.pid + " " + app.processName +
                    " adj " + app.curAdj + ": " + app.adjType);
                app.setAdj = app.curAdj;
            } else {
                success = false;
                Slog.w(TAG, "Failed setting oom adj of " + app + " to " + app.curAdj);
            }
        }
        if (app.setSchedGroup != app.curSchedGroup) {
            app.setSchedGroup = app.curSchedGroup;
            if (DEBUG_SWITCH || DEBUG_OOM_ADJ) Slog.v(TAG,
                    "Setting process group of " + app.processName
                    + " to " + app.curSchedGroup);
            if (app.waitingToKill != null &&
                    app.setSchedGroup == Process.THREAD_GROUP_BG_NONINTERACTIVE) {
                Slog.i(TAG, "Killing " + app.toShortString() + ": " + app.waitingToKill);
                EventLog.writeEvent(EventLogTags.AM_KILL, app.userId, app.pid,
                        app.processName, app.setAdj, app.waitingToKill);
                app.killedBackground = true;
                Process.killProcessQuiet(app.pid);
                success = false;
            } else {
                if (true) {
                    long oldId = Binder.clearCallingIdentity();
                    try {
                        Process.setProcessGroup(app.pid, app.curSchedGroup);
                    } catch (Exception e) {
                        Slog.w(TAG, "Failed setting process group of " + app.pid
                                + " to " + app.curSchedGroup);
                        e.printStackTrace();
                    } finally {
                        Binder.restoreCallingIdentity(oldId);
                    }
                } else {
                    if (app.thread != null) {
                        try {
                            app.thread.setSchedulingGroup(app.curSchedGroup);
                        } catch (RemoteException e) {
                        }
                    }
                }
            }
        }
        return success;
    }

    private final ActivityRecord resumedAppLocked() {
        ActivityRecord resumedActivity = mMainStack.mResumedActivity;
        if (resumedActivity == null || resumedActivity.app == null) {
            resumedActivity = mMainStack.mPausingActivity;
            if (resumedActivity == null || resumedActivity.app == null) {
                resumedActivity = mMainStack.topRunningActivityLocked(null);
            }
        }
        return resumedActivity;
    }

    final boolean updateOomAdjLocked(ProcessRecord app) {
        final ActivityRecord TOP_ACT = resumedAppLocked();
        final ProcessRecord TOP_APP = TOP_ACT != null ? TOP_ACT.app : null;
        int curAdj = app.curAdj;
        final boolean wasHidden = curAdj >= ProcessList.HIDDEN_APP_MIN_ADJ
            && curAdj <= ProcessList.HIDDEN_APP_MAX_ADJ;

        mAdjSeq++;

        boolean success = updateOomAdjLocked(app, app.hiddenAdj, app.clientHiddenAdj,
                app.emptyAdj, TOP_APP, false);
        final boolean nowHidden = app.curAdj >= ProcessList.HIDDEN_APP_MIN_ADJ
            && app.curAdj <= ProcessList.HIDDEN_APP_MAX_ADJ;
        if (nowHidden != wasHidden) {
            // Changed to/from hidden state, so apps after it in the LRU
            // list may also be changed.
            updateOomAdjLocked();
        }
        return success;
    }

    final void updateOomAdjLocked() {
        final ActivityRecord TOP_ACT = resumedAppLocked();
        final ProcessRecord TOP_APP = TOP_ACT != null ? TOP_ACT.app : null;
        final long oldTime = SystemClock.uptimeMillis() - ProcessList.MAX_EMPTY_TIME;

        if (false) {
            RuntimeException e = new RuntimeException();
            e.fillInStackTrace();
            Slog.i(TAG, "updateOomAdj: top=" + TOP_ACT, e);
        }

        mAdjSeq++;
        mNewNumServiceProcs = 0;

        final int emptyProcessLimit;
        final int hiddenProcessLimit;
        if (mProcessLimit <= 0) {
            emptyProcessLimit = hiddenProcessLimit = 0;
        } else if (mProcessLimit == 1) {
            emptyProcessLimit = 1;
            hiddenProcessLimit = 0;
        } else {
            emptyProcessLimit = (mProcessLimit*2)/3;
            hiddenProcessLimit = mProcessLimit - emptyProcessLimit;
        }

        // Let's determine how many processes we have running vs.
        // how many slots we have for background processes; we may want
        // to put multiple processes in a slot of there are enough of
        // them.
        int numSlots = (ProcessList.HIDDEN_APP_MAX_ADJ
                - ProcessList.HIDDEN_APP_MIN_ADJ + 1) / 2;
        int numEmptyProcs = mLruProcesses.size()-mNumNonHiddenProcs-mNumHiddenProcs;
        if (numEmptyProcs > hiddenProcessLimit) {
            // If there are more empty processes than our limit on hidden
            // processes, then use the hidden process limit for the factor.
            // This ensures that the really old empty processes get pushed
            // down to the bottom, so if we are running low on memory we will
            // have a better chance at keeping around more hidden processes
            // instead of a gazillion empty processes.
            numEmptyProcs = hiddenProcessLimit;
        }
        int emptyFactor = numEmptyProcs/numSlots;
        if (emptyFactor < 1) emptyFactor = 1;
        int hiddenFactor = (mNumHiddenProcs > 0 ? mNumHiddenProcs : 1)/numSlots;
        if (hiddenFactor < 1) hiddenFactor = 1;
        int stepHidden = 0;
        int stepEmpty = 0;
        int numHidden = 0;
        int numEmpty = 0;
        int numTrimming = 0;

        mNumNonHiddenProcs = 0;
        mNumHiddenProcs = 0;

        // First update the OOM adjustment for each of the
        // application processes based on their current state.
        int i = mLruProcesses.size();
        int curHiddenAdj = ProcessList.HIDDEN_APP_MIN_ADJ;
        int nextHiddenAdj = curHiddenAdj+1;
        int curEmptyAdj = ProcessList.HIDDEN_APP_MIN_ADJ;
        int nextEmptyAdj = curEmptyAdj+2;
        int curClientHiddenAdj = curEmptyAdj;
        while (i > 0) {
            i--;
            ProcessRecord app = mLruProcesses.get(i);
            //Slog.i(TAG, "OOM " + app + ": cur hidden=" + curHiddenAdj);
            updateOomAdjLocked(app, curHiddenAdj, curClientHiddenAdj, curEmptyAdj, TOP_APP, true);
            if (!app.killedBackground) {
                if (app.curRawAdj == curHiddenAdj && app.hasActivities) {
                    // This process was assigned as a hidden process...  step the
                    // hidden level.
                    mNumHiddenProcs++;
                    if (curHiddenAdj != nextHiddenAdj) {
                        stepHidden++;
                        if (stepHidden >= hiddenFactor) {
                            stepHidden = 0;
                            curHiddenAdj = nextHiddenAdj;
                            nextHiddenAdj += 2;
                            if (nextHiddenAdj > ProcessList.HIDDEN_APP_MAX_ADJ) {
                                nextHiddenAdj = ProcessList.HIDDEN_APP_MAX_ADJ;
                            }
                            if (curClientHiddenAdj <= curHiddenAdj) {
                                curClientHiddenAdj = curHiddenAdj + 1;
                                if (curClientHiddenAdj > ProcessList.HIDDEN_APP_MAX_ADJ) {
                                    curClientHiddenAdj = ProcessList.HIDDEN_APP_MAX_ADJ;
                                }
                            }
                        }
                    }
                    numHidden++;
                    if (numHidden > hiddenProcessLimit) {
                        Slog.i(TAG, "No longer want " + app.processName
                                + " (pid " + app.pid + "): hidden #" + numHidden);
                        EventLog.writeEvent(EventLogTags.AM_KILL, app.userId, app.pid,
                                app.processName, app.setAdj, "too many background");
                        app.killedBackground = true;
                        Process.killProcessQuiet(app.pid);
                    }
                } else if (app.curRawAdj == curHiddenAdj && app.hasClientActivities) {
                    // This process has a client that has activities.  We will have
                    // given it the current hidden adj; here we will just leave it
                    // without stepping the hidden adj.
                    curClientHiddenAdj++;
                    if (curClientHiddenAdj > ProcessList.HIDDEN_APP_MAX_ADJ) {
                        curClientHiddenAdj = ProcessList.HIDDEN_APP_MAX_ADJ;
                    }
                } else {
                    if (app.curRawAdj == curEmptyAdj || app.curRawAdj == curHiddenAdj) {
                        // This process was assigned as an empty process...  step the
                        // empty level.
                        if (curEmptyAdj != nextEmptyAdj) {
                            stepEmpty++;
                            if (stepEmpty >= emptyFactor) {
                                stepEmpty = 0;
                                curEmptyAdj = nextEmptyAdj;
                                nextEmptyAdj += 2;
                                if (nextEmptyAdj > ProcessList.HIDDEN_APP_MAX_ADJ) {
                                    nextEmptyAdj = ProcessList.HIDDEN_APP_MAX_ADJ;
                                }
                            }
                        }
                    } else if (app.curRawAdj < ProcessList.HIDDEN_APP_MIN_ADJ) {
                        mNumNonHiddenProcs++;
                    }
                    if (app.curAdj >= ProcessList.HIDDEN_APP_MIN_ADJ
                            && !app.hasClientActivities) {
                        if (numEmpty > ProcessList.TRIM_EMPTY_APPS
                                && app.lastActivityTime < oldTime) {
                            Slog.i(TAG, "No longer want " + app.processName
                                    + " (pid " + app.pid + "): empty for "
                                    + ((oldTime+ProcessList.MAX_EMPTY_TIME-app.lastActivityTime)
                                            / 1000) + "s");
                            EventLog.writeEvent(EventLogTags.AM_KILL, app.userId, app.pid,
                                    app.processName, app.setAdj, "old background process");
                            app.killedBackground = true;
                            Process.killProcessQuiet(app.pid);
                        } else {
                            numEmpty++;
                            if (numEmpty > emptyProcessLimit) {
                                Slog.i(TAG, "No longer want " + app.processName
                                        + " (pid " + app.pid + "): empty #" + numEmpty);
                                EventLog.writeEvent(EventLogTags.AM_KILL, app.userId, app.pid,
                                        app.processName, app.setAdj, "too many background");
                                app.killedBackground = true;
                                Process.killProcessQuiet(app.pid);
                            }
                        }
                    }
                }
                if (app.isolated && app.services.size() <= 0) {
                    // If this is an isolated process, and there are no
                    // services running in it, then the process is no longer
                    // needed.  We agressively kill these because we can by
                    // definition not re-use the same process again, and it is
                    // good to avoid having whatever code was running in them
                    // left sitting around after no longer needed.
                    Slog.i(TAG, "Isolated process " + app.processName
                            + " (pid " + app.pid + ") no longer needed");
                    EventLog.writeEvent(EventLogTags.AM_KILL, app.userId, app.pid,
                            app.processName, app.setAdj, "isolated not needed");
                    app.killedBackground = true;
                    Process.killProcessQuiet(app.pid);
                }
                if (app.nonStoppingAdj >= ProcessList.HOME_APP_ADJ
                        && app.nonStoppingAdj != ProcessList.SERVICE_B_ADJ
                        && !app.killedBackground) {
                    numTrimming++;
                }
            }
        }

        mNumServiceProcs = mNewNumServiceProcs;

        // Now determine the memory trimming level of background processes.
        // Unfortunately we need to start at the back of the list to do this
        // properly.  We only do this if the number of background apps we
        // are managing to keep around is less than half the maximum we desire;
        // if we are keeping a good number around, we'll let them use whatever
        // memory they want.
        if (numHidden <= ProcessList.TRIM_HIDDEN_APPS
                && numEmpty <= ProcessList.TRIM_EMPTY_APPS) {
            final int numHiddenAndEmpty = numHidden + numEmpty;
            final int N = mLruProcesses.size();
            int factor = numTrimming/3;
            int minFactor = 2;
            if (mHomeProcess != null) minFactor++;
            if (mPreviousProcess != null) minFactor++;
            if (factor < minFactor) factor = minFactor;
            int step = 0;
            int fgTrimLevel;
            if (numHiddenAndEmpty <= ProcessList.TRIM_CRITICAL_THRESHOLD) {
                fgTrimLevel = ComponentCallbacks2.TRIM_MEMORY_RUNNING_CRITICAL;
            } else if (numHiddenAndEmpty <= ProcessList.TRIM_LOW_THRESHOLD) {
                fgTrimLevel = ComponentCallbacks2.TRIM_MEMORY_RUNNING_LOW;
            } else {
                fgTrimLevel = ComponentCallbacks2.TRIM_MEMORY_RUNNING_MODERATE;
            }
            int curLevel = ComponentCallbacks2.TRIM_MEMORY_COMPLETE;
            for (i=0; i<N; i++) {
                ProcessRecord app = mLruProcesses.get(i);
                if (app.nonStoppingAdj >= ProcessList.HOME_APP_ADJ
                        && app.nonStoppingAdj != ProcessList.SERVICE_B_ADJ
                        && !app.killedBackground) {
                    if (app.trimMemoryLevel < curLevel && app.thread != null) {
                        try {
                            app.thread.scheduleTrimMemory(curLevel);
                        } catch (RemoteException e) {
                        }
                        if (false) {
                            // For now we won't do this; our memory trimming seems
                            // to be good enough at this point that destroying
                            // activities causes more harm than good.
                            if (curLevel >= ComponentCallbacks2.TRIM_MEMORY_COMPLETE
                                    && app != mHomeProcess && app != mPreviousProcess) {
                                // Need to do this on its own message because the stack may not
                                // be in a consistent state at this point.
                                // For these apps we will also finish their activities
                                // to help them free memory.
                                mMainStack.scheduleDestroyActivities(app, false, "trim");
                            }
                        }
                    }
                    app.trimMemoryLevel = curLevel;
                    step++;
                    if (step >= factor) {
                        step = 0;
                        switch (curLevel) {
                            case ComponentCallbacks2.TRIM_MEMORY_COMPLETE:
                                curLevel = ComponentCallbacks2.TRIM_MEMORY_MODERATE;
                                break;
                            case ComponentCallbacks2.TRIM_MEMORY_MODERATE:
                                curLevel = ComponentCallbacks2.TRIM_MEMORY_BACKGROUND;
                                break;
                        }
                    }
                } else if (app.nonStoppingAdj == ProcessList.HEAVY_WEIGHT_APP_ADJ) {
                    if (app.trimMemoryLevel < ComponentCallbacks2.TRIM_MEMORY_BACKGROUND
                            && app.thread != null) {
                        try {
                            app.thread.scheduleTrimMemory(
                                    ComponentCallbacks2.TRIM_MEMORY_BACKGROUND);
                        } catch (RemoteException e) {
                        }
                    }
                    app.trimMemoryLevel = ComponentCallbacks2.TRIM_MEMORY_BACKGROUND;
                } else {
                    if ((app.nonStoppingAdj > ProcessList.VISIBLE_APP_ADJ || app.systemNoUi)
                            && app.pendingUiClean) {
                        // If this application is now in the background and it
                        // had done UI, then give it the special trim level to
                        // have it free UI resources.
                        final int level = ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN;
                        if (app.trimMemoryLevel < level && app.thread != null) {
                            try {
                                app.thread.scheduleTrimMemory(level);
                            } catch (RemoteException e) {
                            }
                        }
                        app.pendingUiClean = false;
                    }
                    if (app.trimMemoryLevel < fgTrimLevel && app.thread != null) {
                        try {
                            app.thread.scheduleTrimMemory(fgTrimLevel);
                        } catch (RemoteException e) {
                        }
                    }
                    app.trimMemoryLevel = fgTrimLevel;
                }
            }
        } else {
            final int N = mLruProcesses.size();
            for (i=0; i<N; i++) {
                ProcessRecord app = mLruProcesses.get(i);
                if ((app.nonStoppingAdj > ProcessList.VISIBLE_APP_ADJ || app.systemNoUi)
                        && app.pendingUiClean) {
                    if (app.trimMemoryLevel < ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN
                            && app.thread != null) {
                        try {
                            app.thread.scheduleTrimMemory(
                                    ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN);
                        } catch (RemoteException e) {
                        }
                    }
                    app.pendingUiClean = false;
                }
                app.trimMemoryLevel = 0;
            }
        }

        if (mAlwaysFinishActivities) {
            // Need to do this on its own message because the stack may not
            // be in a consistent state at this point.
            mMainStack.scheduleDestroyActivities(null, false, "always-finish");
        }
    }

    final void trimApplications() {
        synchronized (this) {
            int i;

            // First remove any unused application processes whose package
            // has been removed.
            for (i=mRemovedProcesses.size()-1; i>=0; i--) {
                final ProcessRecord app = mRemovedProcesses.get(i);
                if (app.activities.size() == 0
                        && app.curReceiver == null && app.services.size() == 0) {
                    Slog.i(
                        TAG, "Exiting empty application process "
                        + app.processName + " ("
                        + (app.thread != null ? app.thread.asBinder() : null)
                        + ")\n");
                    if (app.pid > 0 && app.pid != MY_PID) {
                        EventLog.writeEvent(EventLogTags.AM_KILL, app.userId, app.pid,
                                app.processName, app.setAdj, "empty");
                        Process.killProcessQuiet(app.pid);
                    } else {
                        try {
                            app.thread.scheduleExit();
                        } catch (Exception e) {
                            // Ignore exceptions.
                        }
                    }
                    cleanUpApplicationRecordLocked(app, false, true, -1);
                    mRemovedProcesses.remove(i);
                    
                    if (app.persistent) {
                        if (app.persistent) {
                            addAppLocked(app.info, false);
                        }
                    }
                }
            }

            // Now update the oom adj for all processes.
            updateOomAdjLocked();
        }
    }

    /** This method sends the specified signal to each of the persistent apps */
    public void signalPersistentProcesses(int sig) throws RemoteException {
        if (sig != Process.SIGNAL_USR1) {
            throw new SecurityException("Only SIGNAL_USR1 is allowed");
        }

        synchronized (this) {
            if (checkCallingPermission(android.Manifest.permission.SIGNAL_PERSISTENT_PROCESSES)
                    != PackageManager.PERMISSION_GRANTED) {
                throw new SecurityException("Requires permission "
                        + android.Manifest.permission.SIGNAL_PERSISTENT_PROCESSES);
            }

            for (int i = mLruProcesses.size() - 1 ; i >= 0 ; i--) {
                ProcessRecord r = mLruProcesses.get(i);
                if (r.thread != null && r.persistent) {
                    Process.sendSignal(r.pid, sig);
                }
            }
        }
    }

    private void stopProfilerLocked(ProcessRecord proc, String path, int profileType) {
        if (proc == null || proc == mProfileProc) {
            proc = mProfileProc;
            path = mProfileFile;
            profileType = mProfileType;
            clearProfilerLocked();
        }
        if (proc == null) {
            return;
        }
        try {
            proc.thread.profilerControl(false, path, null, profileType);
        } catch (RemoteException e) {
            throw new IllegalStateException("Process disappeared");
        }
    }

    private void clearProfilerLocked() {
        if (mProfileFd != null) {
            try {
                mProfileFd.close();
            } catch (IOException e) {
            }
        }
        mProfileApp = null;
        mProfileProc = null;
        mProfileFile = null;
        mProfileType = 0;
        mAutoStopProfiler = false;
    }

    public boolean profileControl(String process, int userId, boolean start,
            String path, ParcelFileDescriptor fd, int profileType) throws RemoteException {

        try {
            synchronized (this) {
                // note: hijacking SET_ACTIVITY_WATCHER, but should be changed to
                // its own permission.
                if (checkCallingPermission(android.Manifest.permission.SET_ACTIVITY_WATCHER)
                        != PackageManager.PERMISSION_GRANTED) {
                    throw new SecurityException("Requires permission "
                            + android.Manifest.permission.SET_ACTIVITY_WATCHER);
                }

                if (start && fd == null) {
                    throw new IllegalArgumentException("null fd");
                }

                ProcessRecord proc = null;
                if (process != null) {
                    proc = findProcessLocked(process, userId, "profileControl");
                }

                if (start && (proc == null || proc.thread == null)) {
                    throw new IllegalArgumentException("Unknown process: " + process);
                }

                if (start) {
                    stopProfilerLocked(null, null, 0);
                    setProfileApp(proc.info, proc.processName, path, fd, false);
                    mProfileProc = proc;
                    mProfileType = profileType;
                    try {
                        fd = fd.dup();
                    } catch (IOException e) {
                        fd = null;
                    }
                    proc.thread.profilerControl(start, path, fd, profileType);
                    fd = null;
                    mProfileFd = null;
                } else {
                    stopProfilerLocked(proc, path, profileType);
                    if (fd != null) {
                        try {
                            fd.close();
                        } catch (IOException e) {
                        }
                    }
                }

                return true;
            }
        } catch (RemoteException e) {
            throw new IllegalStateException("Process disappeared");
        } finally {
            if (fd != null) {
                try {
                    fd.close();
                } catch (IOException e) {
                }
            }
        }
    }

    private ProcessRecord findProcessLocked(String process, int userId, String callName) {
        userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(),
                userId, true, true, callName, null);
        ProcessRecord proc = null;
        try {
            int pid = Integer.parseInt(process);
            synchronized (mPidsSelfLocked) {
                proc = mPidsSelfLocked.get(pid);
            }
        } catch (NumberFormatException e) {
        }

        if (proc == null) {
            HashMap<String, SparseArray<ProcessRecord>> all
                    = mProcessNames.getMap();
            SparseArray<ProcessRecord> procs = all.get(process);
            if (procs != null && procs.size() > 0) {
                proc = procs.valueAt(0);
                if (userId != UserHandle.USER_ALL && proc.userId != userId) {
                    for (int i=1; i<procs.size(); i++) {
                        ProcessRecord thisProc = procs.valueAt(i);
                        if (thisProc.userId == userId) {
                            proc = thisProc;
                            break;
                        }
                    }
                }
            }
        }

        return proc;
    }

    public boolean dumpHeap(String process, int userId, boolean managed,
            String path, ParcelFileDescriptor fd) throws RemoteException {

        try {
            synchronized (this) {
                // note: hijacking SET_ACTIVITY_WATCHER, but should be changed to
                // its own permission (same as profileControl).
                if (checkCallingPermission(android.Manifest.permission.SET_ACTIVITY_WATCHER)
                        != PackageManager.PERMISSION_GRANTED) {
                    throw new SecurityException("Requires permission "
                            + android.Manifest.permission.SET_ACTIVITY_WATCHER);
                }

                if (fd == null) {
                    throw new IllegalArgumentException("null fd");
                }

                ProcessRecord proc = findProcessLocked(process, userId, "dumpHeap");
                if (proc == null || proc.thread == null) {
                    throw new IllegalArgumentException("Unknown process: " + process);
                }

                boolean isDebuggable = "1".equals(SystemProperties.get(SYSTEM_DEBUGGABLE, "0"));
                if (!isDebuggable) {
                    if ((proc.info.flags&ApplicationInfo.FLAG_DEBUGGABLE) == 0) {
                        throw new SecurityException("Process not debuggable: " + proc);
                    }
                }

                proc.thread.dumpHeap(managed, path, fd);
                fd = null;
                return true;
            }
        } catch (RemoteException e) {
            throw new IllegalStateException("Process disappeared");
        } finally {
            if (fd != null) {
                try {
                    fd.close();
                } catch (IOException e) {
                }
            }
        }
    }

    /** In this method we try to acquire our lock to make sure that we have not deadlocked */
    public void monitor() {
        synchronized (this) { }
    }

    void onCoreSettingsChange(Bundle settings) {
        for (int i = mLruProcesses.size() - 1; i >= 0; i--) {
            ProcessRecord processRecord = mLruProcesses.get(i);
            try {
                if (processRecord.thread != null) {
                    processRecord.thread.setCoreSettings(settings);
                }
            } catch (RemoteException re) {
                /* ignore */
            }
        }
    }

    // Multi-user methods

    @Override
    public boolean switchUser(final int userId) {
        if (checkCallingPermission(android.Manifest.permission.INTERACT_ACROSS_USERS_FULL)
                != PackageManager.PERMISSION_GRANTED) {
            String msg = "Permission Denial: switchUser() from pid="
                    + Binder.getCallingPid()
                    + ", uid=" + Binder.getCallingUid()
                    + " requires " + android.Manifest.permission.INTERACT_ACROSS_USERS_FULL;
            Slog.w(TAG, msg);
            throw new SecurityException(msg);
        }

        final long ident = Binder.clearCallingIdentity();
        try {
            synchronized (this) {
                final int oldUserId = mCurrentUserId;
                if (oldUserId == userId) {
                    return true;
                }

                final UserInfo userInfo = getUserManagerLocked().getUserInfo(userId);
                if (userInfo == null) {
                    Slog.w(TAG, "No user info for user #" + userId);
                    return false;
                }

                mWindowManager.startFreezingScreen(R.anim.screen_user_exit,
                        R.anim.screen_user_enter);

                boolean needStart = false;

                // If the user we are switching to is not currently started, then
                // we need to start it now.
                if (mStartedUsers.get(userId) == null) {
                    mStartedUsers.put(userId, new UserStartedState(new UserHandle(userId), false));
                    updateStartedUserArrayLocked();
                    needStart = true;
                }

                mCurrentUserId = userId;
                mCurrentUserArray = new int[] { userId };
                final Integer userIdInt = Integer.valueOf(userId);
                mUserLru.remove(userIdInt);
                mUserLru.add(userIdInt);

                mWindowManager.setCurrentUser(userId);

                // Once the internal notion of the active user has switched, we lock the device
                // with the option to show the user switcher on the keyguard.
                mWindowManager.lockNow(null);

                final UserStartedState uss = mStartedUsers.get(userId);

                // Make sure user is in the started state.  If it is currently
                // stopping, we need to knock that off.
                if (uss.mState == UserStartedState.STATE_STOPPING) {
                    // If we are stopping, we haven't sent ACTION_SHUTDOWN,
                    // so we can just fairly silently bring the user back from
                    // the almost-dead.
                    uss.mState = UserStartedState.STATE_RUNNING;
                    updateStartedUserArrayLocked();
                    needStart = true;
                } else if (uss.mState == UserStartedState.STATE_SHUTDOWN) {
                    // This means ACTION_SHUTDOWN has been sent, so we will
                    // need to treat this as a new boot of the user.
                    uss.mState = UserStartedState.STATE_BOOTING;
                    updateStartedUserArrayLocked();
                    needStart = true;
                }

                mHandler.removeMessages(REPORT_USER_SWITCH_MSG);
                mHandler.removeMessages(USER_SWITCH_TIMEOUT_MSG);
                mHandler.sendMessage(mHandler.obtainMessage(REPORT_USER_SWITCH_MSG,
                        oldUserId, userId, uss));
                mHandler.sendMessageDelayed(mHandler.obtainMessage(USER_SWITCH_TIMEOUT_MSG,
                        oldUserId, userId, uss), USER_SWITCH_TIMEOUT);
                if (needStart) {
                    Intent intent = new Intent(Intent.ACTION_USER_STARTED);
                    intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY
                            | Intent.FLAG_RECEIVER_FOREGROUND);
                    intent.putExtra(Intent.EXTRA_USER_HANDLE, userId);
                    broadcastIntentLocked(null, null, intent,
                            null, null, 0, null, null, null,
                            false, false, MY_PID, Process.SYSTEM_UID, userId);
                }

                if ((userInfo.flags&UserInfo.FLAG_INITIALIZED) == 0) {
                    if (userId != 0) {
                        Intent intent = new Intent(Intent.ACTION_USER_INITIALIZE);
                        intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);
                        broadcastIntentLocked(null, null, intent, null,
                                new IIntentReceiver.Stub() {
                                    public void performReceive(Intent intent, int resultCode,
                                            String data, Bundle extras, boolean ordered,
                                            boolean sticky, int sendingUser) {
                                        userInitialized(uss, userId);
                                    }
                                }, 0, null, null, null, true, false, MY_PID, Process.SYSTEM_UID,
                                userId);
                        uss.initializing = true;
                    } else {
                        getUserManagerLocked().makeInitialized(userInfo.id);
                    }
                }

                boolean haveActivities = mMainStack.switchUserLocked(userId, uss);
                if (!haveActivities) {
                    startHomeActivityLocked(userId);
                }

                EventLogTags.writeAmSwitchUser(userId);
                getUserManagerLocked().userForeground(userId);
                sendUserSwitchBroadcastsLocked(oldUserId, userId);
                if (needStart) {
                    Intent intent = new Intent(Intent.ACTION_USER_STARTING);
                    intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
                    intent.putExtra(Intent.EXTRA_USER_HANDLE, userId);
                    broadcastIntentLocked(null, null, intent,
                            null, new IIntentReceiver.Stub() {
                                @Override
                                public void performReceive(Intent intent, int resultCode, String data,
                                        Bundle extras, boolean ordered, boolean sticky, int sendingUser)
                                        throws RemoteException {
                                }
                            }, 0, null, null,
                            android.Manifest.permission.INTERACT_ACROSS_USERS,
                            true, false, MY_PID, Process.SYSTEM_UID, UserHandle.USER_ALL);
                }
            }
        } finally {
            Binder.restoreCallingIdentity(ident);
        }

        return true;
    }

    void sendUserSwitchBroadcastsLocked(int oldUserId, int newUserId) {
        long ident = Binder.clearCallingIdentity();
        try {
            Intent intent;
            if (oldUserId >= 0) {
                intent = new Intent(Intent.ACTION_USER_BACKGROUND);
                intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY
                        | Intent.FLAG_RECEIVER_FOREGROUND);
                intent.putExtra(Intent.EXTRA_USER_HANDLE, oldUserId);
                broadcastIntentLocked(null, null, intent,
                        null, null, 0, null, null, null,
                        false, false, MY_PID, Process.SYSTEM_UID, oldUserId);
            }
            if (newUserId >= 0) {
                intent = new Intent(Intent.ACTION_USER_FOREGROUND);
                intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY
                        | Intent.FLAG_RECEIVER_FOREGROUND);
                intent.putExtra(Intent.EXTRA_USER_HANDLE, newUserId);
                broadcastIntentLocked(null, null, intent,
                        null, null, 0, null, null, null,
                        false, false, MY_PID, Process.SYSTEM_UID, newUserId);
                intent = new Intent(Intent.ACTION_USER_SWITCHED);
                intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY
                        | Intent.FLAG_RECEIVER_FOREGROUND);
                intent.putExtra(Intent.EXTRA_USER_HANDLE, newUserId);
                broadcastIntentLocked(null, null, intent,
                        null, null, 0, null, null,
                        android.Manifest.permission.MANAGE_USERS,
                        false, false, MY_PID, Process.SYSTEM_UID, UserHandle.USER_ALL);
            }
        } finally {
            Binder.restoreCallingIdentity(ident);
        }
    }

    void dispatchUserSwitch(final UserStartedState uss, final int oldUserId,
            final int newUserId) {
        final int N = mUserSwitchObservers.beginBroadcast();
        if (N > 0) {
            final IRemoteCallback callback = new IRemoteCallback.Stub() {
                int mCount = 0;
                @Override
                public void sendResult(Bundle data) throws RemoteException {
                    synchronized (ActivityManagerService.this) {
                        if (mCurUserSwitchCallback == this) {
                            mCount++;
                            if (mCount == N) {
                                sendContinueUserSwitchLocked(uss, oldUserId, newUserId);
                            }
                        }
                    }
                }
            };
            synchronized (this) {
                uss.switching = true;
                mCurUserSwitchCallback = callback;
            }
            for (int i=0; i<N; i++) {
                try {
                    mUserSwitchObservers.getBroadcastItem(i).onUserSwitching(
                            newUserId, callback);
                } catch (RemoteException e) {
                }
            }
        } else {
            synchronized (this) {
                sendContinueUserSwitchLocked(uss, oldUserId, newUserId);
            }
        }
        mUserSwitchObservers.finishBroadcast();
    }

    void timeoutUserSwitch(UserStartedState uss, int oldUserId, int newUserId) {
        synchronized (this) {
            Slog.w(TAG, "User switch timeout: from " + oldUserId + " to " + newUserId);
            sendContinueUserSwitchLocked(uss, oldUserId, newUserId);
        }
    }

    void sendContinueUserSwitchLocked(UserStartedState uss, int oldUserId, int newUserId) {
        mCurUserSwitchCallback = null;
        mHandler.removeMessages(USER_SWITCH_TIMEOUT_MSG);
        mHandler.sendMessage(mHandler.obtainMessage(CONTINUE_USER_SWITCH_MSG,
                oldUserId, newUserId, uss));
    }

    void userInitialized(UserStartedState uss, int newUserId) {
        completeSwitchAndInitalize(uss, newUserId, true, false);
    }

    void continueUserSwitch(UserStartedState uss, int oldUserId, int newUserId) {
        completeSwitchAndInitalize(uss, newUserId, false, true);
    }

    void completeSwitchAndInitalize(UserStartedState uss, int newUserId,
            boolean clearInitializing, boolean clearSwitching) {
        boolean unfrozen = false;
        synchronized (this) {
            if (clearInitializing) {
                uss.initializing = false;
                getUserManagerLocked().makeInitialized(uss.mHandle.getIdentifier());
            }
            if (clearSwitching) {
                uss.switching = false;
            }
            if (!uss.switching && !uss.initializing) {
                mWindowManager.stopFreezingScreen();
                unfrozen = true;
            }
        }
        if (unfrozen) {
            final int N = mUserSwitchObservers.beginBroadcast();
            for (int i=0; i<N; i++) {
                try {
                    mUserSwitchObservers.getBroadcastItem(i).onUserSwitchComplete(newUserId);
                } catch (RemoteException e) {
                }
            }
            mUserSwitchObservers.finishBroadcast();
        }
    }

    void finishUserSwitch(UserStartedState uss) {
        synchronized (this) {
            if (uss.mState == UserStartedState.STATE_BOOTING
                    && mStartedUsers.get(uss.mHandle.getIdentifier()) == uss) {
                uss.mState = UserStartedState.STATE_RUNNING;
                final int userId = uss.mHandle.getIdentifier();
                Intent intent = new Intent(Intent.ACTION_BOOT_COMPLETED, null);
                intent.putExtra(Intent.EXTRA_USER_HANDLE, userId);
                broadcastIntentLocked(null, null, intent,
                        null, null, 0, null, null,
                        android.Manifest.permission.RECEIVE_BOOT_COMPLETED,
                        false, false, MY_PID, Process.SYSTEM_UID, userId);
            }
            int num = mUserLru.size();
            int i = 0;
            while (num > MAX_RUNNING_USERS && i < mUserLru.size()) {
                Integer oldUserId = mUserLru.get(i);
                UserStartedState oldUss = mStartedUsers.get(oldUserId);
                if (oldUss == null) {
                    // Shouldn't happen, but be sane if it does.
                    mUserLru.remove(i);
                    num--;
                    continue;
                }
                if (oldUss.mState == UserStartedState.STATE_STOPPING
                        || oldUss.mState == UserStartedState.STATE_SHUTDOWN) {
                    // This user is already stopping, doesn't count.
                    num--;
                    i++;
                    continue;
                }
                if (oldUserId == UserHandle.USER_OWNER || oldUserId == mCurrentUserId) {
                    // Owner and current can't be stopped, but count as running.
                    i++;
                    continue;
                }
                // This is a user to be stopped.
                stopUserLocked(oldUserId, null);
                num--;
                i++;
            }
        }
    }

    @Override
    public int stopUser(final int userId, final IStopUserCallback callback) {
        if (checkCallingPermission(android.Manifest.permission.INTERACT_ACROSS_USERS_FULL)
                != PackageManager.PERMISSION_GRANTED) {
            String msg = "Permission Denial: switchUser() from pid="
                    + Binder.getCallingPid()
                    + ", uid=" + Binder.getCallingUid()
                    + " requires " + android.Manifest.permission.INTERACT_ACROSS_USERS_FULL;
            Slog.w(TAG, msg);
            throw new SecurityException(msg);
        }
        if (userId <= 0) {
            throw new IllegalArgumentException("Can't stop primary user " + userId);
        }
        synchronized (this) {
            return stopUserLocked(userId, callback);
        }
    }

    private int stopUserLocked(final int userId, final IStopUserCallback callback) {
        if (mCurrentUserId == userId) {
            return ActivityManager.USER_OP_IS_CURRENT;
        }

        final UserStartedState uss = mStartedUsers.get(userId);
        if (uss == null) {
            // User is not started, nothing to do...  but we do need to
            // callback if requested.
            if (callback != null) {
                mHandler.post(new Runnable() {
                    @Override
                    public void run() {
                        try {
                            callback.userStopped(userId);
                        } catch (RemoteException e) {
                        }
                    }
                });
            }
            return ActivityManager.USER_OP_SUCCESS;
        }

        if (callback != null) {
            uss.mStopCallbacks.add(callback);
        }

        if (uss.mState != UserStartedState.STATE_STOPPING
                && uss.mState != UserStartedState.STATE_SHUTDOWN) {
            uss.mState = UserStartedState.STATE_STOPPING;
            updateStartedUserArrayLocked();

            long ident = Binder.clearCallingIdentity();
            try {
                // We are going to broadcast ACTION_USER_STOPPING and then
                // once that is done send a final ACTION_SHUTDOWN and then
                // stop the user.
                final Intent stoppingIntent = new Intent(Intent.ACTION_USER_STOPPING);
                stoppingIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
                stoppingIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId);
                final Intent shutdownIntent = new Intent(Intent.ACTION_SHUTDOWN);
                // This is the result receiver for the final shutdown broadcast.
                final IIntentReceiver shutdownReceiver = new IIntentReceiver.Stub() {
                    @Override
                    public void performReceive(Intent intent, int resultCode, String data,
                            Bundle extras, boolean ordered, boolean sticky, int sendingUser) {
                        finishUserStop(uss);
                    }
                };
                // This is the result receiver for the initial stopping broadcast.
                final IIntentReceiver stoppingReceiver = new IIntentReceiver.Stub() {
                    @Override
                    public void performReceive(Intent intent, int resultCode, String data,
                            Bundle extras, boolean ordered, boolean sticky, int sendingUser) {
                        // On to the next.
                        synchronized (ActivityManagerService.this) {
                            if (uss.mState != UserStartedState.STATE_STOPPING) {
                                // Whoops, we are being started back up.  Abort, abort!
                                return;
                            }
                            uss.mState = UserStartedState.STATE_SHUTDOWN;
                        }
                        broadcastIntentLocked(null, null, shutdownIntent,
                                null, shutdownReceiver, 0, null, null, null,
                                true, false, MY_PID, Process.SYSTEM_UID, userId);
                    }
                };
                // Kick things off.
                broadcastIntentLocked(null, null, stoppingIntent,
                        null, stoppingReceiver, 0, null, null,
                        android.Manifest.permission.INTERACT_ACROSS_USERS,
                        true, false, MY_PID, Process.SYSTEM_UID, UserHandle.USER_ALL);
            } finally {
                Binder.restoreCallingIdentity(ident);
            }
        }

        return ActivityManager.USER_OP_SUCCESS;
    }

    void finishUserStop(UserStartedState uss) {
        final int userId = uss.mHandle.getIdentifier();
        boolean stopped;
        ArrayList<IStopUserCallback> callbacks;
        synchronized (this) {
            callbacks = new ArrayList<IStopUserCallback>(uss.mStopCallbacks);
            if (mStartedUsers.get(userId) != uss) {
                stopped = false;
            } else if (uss.mState != UserStartedState.STATE_SHUTDOWN) {
                stopped = false;
            } else {
                stopped = true;
                // User can no longer run.
                mStartedUsers.remove(userId);
                mUserLru.remove(Integer.valueOf(userId));
                updateStartedUserArrayLocked();

                // Clean up all state and processes associated with the user.
                // Kill all the processes for the user.
                forceStopUserLocked(userId);
            }
        }

        for (int i=0; i<callbacks.size(); i++) {
            try {
                if (stopped) callbacks.get(i).userStopped(userId);
                else callbacks.get(i).userStopAborted(userId);
            } catch (RemoteException e) {
            }
        }
    }

    @Override
    public UserInfo getCurrentUser() {
        if ((checkCallingPermission(android.Manifest.permission.INTERACT_ACROSS_USERS)
                != PackageManager.PERMISSION_GRANTED) && (
                checkCallingPermission(android.Manifest.permission.INTERACT_ACROSS_USERS_FULL)
                != PackageManager.PERMISSION_GRANTED)) {
            String msg = "Permission Denial: getCurrentUser() from pid="
                    + Binder.getCallingPid()
                    + ", uid=" + Binder.getCallingUid()
                    + " requires " + android.Manifest.permission.INTERACT_ACROSS_USERS;
            Slog.w(TAG, msg);
            throw new SecurityException(msg);
        }
        synchronized (this) {
            return getUserManagerLocked().getUserInfo(mCurrentUserId);
        }
    }

    int getCurrentUserIdLocked() {
        return mCurrentUserId;
    }

    @Override
    public boolean isUserRunning(int userId, boolean orStopped) {
        if (checkCallingPermission(android.Manifest.permission.INTERACT_ACROSS_USERS)
                != PackageManager.PERMISSION_GRANTED) {
            String msg = "Permission Denial: isUserRunning() from pid="
                    + Binder.getCallingPid()
                    + ", uid=" + Binder.getCallingUid()
                    + " requires " + android.Manifest.permission.INTERACT_ACROSS_USERS;
            Slog.w(TAG, msg);
            throw new SecurityException(msg);
        }
        synchronized (this) {
            return isUserRunningLocked(userId, orStopped);
        }
    }

    boolean isUserRunningLocked(int userId, boolean orStopped) {
        UserStartedState state = mStartedUsers.get(userId);
        if (state == null) {
            return false;
        }
        if (orStopped) {
            return true;
        }
        return state.mState != UserStartedState.STATE_STOPPING
                && state.mState != UserStartedState.STATE_SHUTDOWN;
    }

    @Override
    public int[] getRunningUserIds() {
        if (checkCallingPermission(android.Manifest.permission.INTERACT_ACROSS_USERS)
                != PackageManager.PERMISSION_GRANTED) {
            String msg = "Permission Denial: isUserRunning() from pid="
                    + Binder.getCallingPid()
                    + ", uid=" + Binder.getCallingUid()
                    + " requires " + android.Manifest.permission.INTERACT_ACROSS_USERS;
            Slog.w(TAG, msg);
            throw new SecurityException(msg);
        }
        synchronized (this) {
            return mStartedUserArray;
        }
    }

    private void updateStartedUserArrayLocked() {
        int num = 0;
        for (int i=0; i<mStartedUsers.size();  i++) {
            UserStartedState uss = mStartedUsers.valueAt(i);
            // This list does not include stopping users.
            if (uss.mState != UserStartedState.STATE_STOPPING
                    && uss.mState != UserStartedState.STATE_SHUTDOWN) {
                num++;
            }
        }
        mStartedUserArray = new int[num];
        num = 0;
        for (int i=0; i<mStartedUsers.size();  i++) {
            UserStartedState uss = mStartedUsers.valueAt(i);
            if (uss.mState != UserStartedState.STATE_STOPPING
                    && uss.mState != UserStartedState.STATE_SHUTDOWN) {
                mStartedUserArray[num] = mStartedUsers.keyAt(i);
                num++;
            }
        }
    }

    @Override
    public void registerUserSwitchObserver(IUserSwitchObserver observer) {
        if (checkCallingPermission(android.Manifest.permission.INTERACT_ACROSS_USERS_FULL)
                != PackageManager.PERMISSION_GRANTED) {
            String msg = "Permission Denial: registerUserSwitchObserver() from pid="
                    + Binder.getCallingPid()
                    + ", uid=" + Binder.getCallingUid()
                    + " requires " + android.Manifest.permission.INTERACT_ACROSS_USERS_FULL;
            Slog.w(TAG, msg);
            throw new SecurityException(msg);
        }

        mUserSwitchObservers.register(observer);
    }

    @Override
    public void unregisterUserSwitchObserver(IUserSwitchObserver observer) {
        mUserSwitchObservers.unregister(observer);
    }

    private boolean userExists(int userId) {
        if (userId == 0) {
            return true;
        }
        UserManagerService ums = getUserManagerLocked();
        return ums != null ? (ums.getUserInfo(userId) != null) : false;
    }

    int[] getUsersLocked() {
        UserManagerService ums = getUserManagerLocked();
        return ums != null ? ums.getUserIds() : new int[] { 0 };
    }

    UserManagerService getUserManagerLocked() {
        if (mUserManager == null) {
            IBinder b = ServiceManager.getService(Context.USER_SERVICE);
            mUserManager = (UserManagerService)IUserManager.Stub.asInterface(b);
        }
        return mUserManager;
    }

    private void checkValidCaller(int uid, int userId) {
        if (UserHandle.getUserId(uid) == userId || uid == Process.SYSTEM_UID || uid == 0) return;

        throw new SecurityException("Caller uid=" + uid
                + " is not privileged to communicate with user=" + userId);
    }

    private int applyUserId(int uid, int userId) {
        return UserHandle.getUid(userId, uid);
    }

    ApplicationInfo getAppInfoForUser(ApplicationInfo info, int userId) {
        if (info == null) return null;
        ApplicationInfo newInfo = new ApplicationInfo(info);
        newInfo.uid = applyUserId(info.uid, userId);
        newInfo.dataDir = USER_DATA_DIR + userId + "/"
                + info.packageName;
        return newInfo;
    }

    ActivityInfo getActivityInfoForUser(ActivityInfo aInfo, int userId) {
        if (aInfo == null
                || (userId < 1 && aInfo.applicationInfo.uid < UserHandle.PER_USER_RANGE)) {
            return aInfo;
        }

        ActivityInfo info = new ActivityInfo(aInfo);
        info.applicationInfo = getAppInfoForUser(info.applicationInfo, userId);
        return info;
    }
}