/*
 * Copyright (C) 2015 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;

import android.Manifest;
import android.app.ActivityManager;
import android.app.ActivityManagerInternal;
import android.app.AlarmManager;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.database.ContentObserver;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.hardware.TriggerEvent;
import android.hardware.TriggerEventListener;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.location.LocationRequest;
import android.net.ConnectivityManager;
import android.net.INetworkPolicyManager;
import android.net.NetworkInfo;
import android.net.Uri;
import android.os.BatteryManager;
import android.os.BatteryStats;
import android.os.Binder;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.IDeviceIdleController;
import android.os.Looper;
import android.os.Message;
import android.os.PowerManager;
import android.os.PowerManager.ServiceType;
import android.os.PowerManagerInternal;
import android.os.Process;
import android.os.RemoteException;
import android.os.ResultReceiver;
import android.os.ServiceManager;
import android.os.ShellCallback;
import android.os.ShellCommand;
import android.os.SystemClock;
import android.os.UserHandle;
import android.provider.Settings;
import android.util.ArrayMap;
import android.util.ArraySet;
import android.util.AtomicFile;
import android.util.KeyValueListParser;
import android.util.MutableLong;
import android.util.Pair;
import android.util.Slog;
import android.util.SparseArray;
import android.util.SparseBooleanArray;
import android.util.TimeUtils;
import android.util.Xml;

import com.android.internal.annotations.GuardedBy;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.app.IBatteryStats;
import com.android.internal.os.BackgroundThread;
import com.android.internal.util.DumpUtils;
import com.android.internal.util.FastXmlSerializer;
import com.android.internal.util.XmlUtils;
import com.android.server.am.BatteryStatsService;
import com.android.server.deviceidle.ConstraintController;
import com.android.server.deviceidle.DeviceIdleConstraintTracker;
import com.android.server.deviceidle.IDeviceIdleConstraint;
import com.android.server.deviceidle.TvConstraintController;
import com.android.server.net.NetworkPolicyManagerInternal;
import com.android.server.wm.ActivityTaskManagerInternal;

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlSerializer;

import java.io.ByteArrayOutputStream;
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.PrintWriter;
import java.nio.charset.StandardCharsets;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;

/**
 * Keeps track of device idleness and drives low power mode based on that.
 *
 * Test: atest com.android.server.DeviceIdleControllerTest
 *
 * Current idling state machine (as of Android Q). This can be visualized using Graphviz:
   <pre>

   digraph {
     subgraph deep {
       label="deep";

       STATE_ACTIVE [label="STATE_ACTIVE\nScreen on OR Charging OR Alarm going off soon"]
       STATE_INACTIVE [label="STATE_INACTIVE\nScreen off AND Not charging"]
       STATE_QUICK_DOZE_DELAY [
         label="STATE_QUICK_DOZE_DELAY\n"
             + "Screen off AND Not charging\n"
             + "Location, motion detection, and significant motion monitoring turned off"
       ]
       STATE_IDLE_PENDING [
         label="STATE_IDLE_PENDING\nSignificant motion monitoring turned on"
       ]
       STATE_SENSING [label="STATE_SENSING\nMonitoring for ANY motion"]
       STATE_LOCATING [
         label="STATE_LOCATING\nRequesting location, motion monitoring still on"
       ]
       STATE_IDLE [
         label="STATE_IDLE\nLocation and motion detection turned off\n"
             + "Significant motion monitoring state unchanged"
       ]
       STATE_IDLE_MAINTENANCE [label="STATE_IDLE_MAINTENANCE\n"]

       STATE_ACTIVE -> STATE_INACTIVE [
         label="becomeInactiveIfAppropriateLocked() AND Quick Doze not enabled"
       ]
       STATE_ACTIVE -> STATE_QUICK_DOZE_DELAY [
         label="becomeInactiveIfAppropriateLocked() AND Quick Doze enabled"
       ]

       STATE_INACTIVE -> STATE_ACTIVE [
         label="handleMotionDetectedLocked(), becomeActiveLocked()"
       ]
       STATE_INACTIVE -> STATE_IDLE_PENDING [label="stepIdleStateLocked()"]
       STATE_INACTIVE -> STATE_QUICK_DOZE_DELAY [
         label="becomeInactiveIfAppropriateLocked() AND Quick Doze enabled"
       ]

       STATE_IDLE_PENDING -> STATE_ACTIVE [
         label="handleMotionDetectedLocked(), becomeActiveLocked()"
       ]
       STATE_IDLE_PENDING -> STATE_SENSING [label="stepIdleStateLocked()"]
       STATE_IDLE_PENDING -> STATE_QUICK_DOZE_DELAY [
         label="becomeInactiveIfAppropriateLocked() AND Quick Doze enabled"
       ]

       STATE_SENSING -> STATE_ACTIVE [
         label="handleMotionDetectedLocked(), becomeActiveLocked()"
       ]
       STATE_SENSING -> STATE_LOCATING [label="stepIdleStateLocked()"]
       STATE_SENSING -> STATE_QUICK_DOZE_DELAY [
         label="becomeInactiveIfAppropriateLocked() AND Quick Doze enabled"
       ]
       STATE_SENSING -> STATE_IDLE [
         label="stepIdleStateLocked()\n"
             + "No Location Manager OR (no Network provider AND no GPS provider)"
       ]

       STATE_LOCATING -> STATE_ACTIVE [
         label="handleMotionDetectedLocked(), becomeActiveLocked()"
       ]
       STATE_LOCATING -> STATE_QUICK_DOZE_DELAY [
         label="becomeInactiveIfAppropriateLocked() AND Quick Doze enabled"
       ]
       STATE_LOCATING -> STATE_IDLE [label="stepIdleStateLocked()"]

       STATE_QUICK_DOZE_DELAY -> STATE_ACTIVE [
         label="handleMotionDetectedLocked(), becomeActiveLocked()"
       ]
       STATE_QUICK_DOZE_DELAY -> STATE_IDLE [label="stepIdleStateLocked()"]

       STATE_IDLE -> STATE_ACTIVE [label="handleMotionDetectedLocked(), becomeActiveLocked()"]
       STATE_IDLE -> STATE_IDLE_MAINTENANCE [label="stepIdleStateLocked()"]

       STATE_IDLE_MAINTENANCE -> STATE_ACTIVE [
         label="handleMotionDetectedLocked(), becomeActiveLocked()"
       ]
       STATE_IDLE_MAINTENANCE -> STATE_IDLE [
         label="stepIdleStateLocked(), exitMaintenanceEarlyIfNeededLocked()"
       ]
     }

     subgraph light {
       label="light"

       LIGHT_STATE_ACTIVE [
         label="LIGHT_STATE_ACTIVE\nScreen on OR Charging OR Alarm going off soon"
       ]
       LIGHT_STATE_INACTIVE [label="LIGHT_STATE_INACTIVE\nScreen off AND Not charging"]
       LIGHT_STATE_PRE_IDLE [
         label="LIGHT_STATE_PRE_IDLE\n"
             + "Delay going into LIGHT_STATE_IDLE due to some running jobs or alarms"
       ]
       LIGHT_STATE_IDLE [label="LIGHT_STATE_IDLE\n"]
       LIGHT_STATE_WAITING_FOR_NETWORK [
         label="LIGHT_STATE_WAITING_FOR_NETWORK\n"
             + "Coming out of LIGHT_STATE_IDLE, waiting for network"
       ]
       LIGHT_STATE_IDLE_MAINTENANCE [label="LIGHT_STATE_IDLE_MAINTENANCE\n"]
       LIGHT_STATE_OVERRIDE [
         label="LIGHT_STATE_OVERRIDE\nDevice in deep doze, light no longer changing states"
       ]

       LIGHT_STATE_ACTIVE -> LIGHT_STATE_INACTIVE [
         label="becomeInactiveIfAppropriateLocked()"
       ]
       LIGHT_STATE_ACTIVE -> LIGHT_STATE_OVERRIDE [label="deep goes to STATE_IDLE"]

       LIGHT_STATE_INACTIVE -> LIGHT_STATE_ACTIVE [label="becomeActiveLocked()"]
       LIGHT_STATE_INACTIVE -> LIGHT_STATE_PRE_IDLE [label="active jobs"]
       LIGHT_STATE_INACTIVE -> LIGHT_STATE_IDLE [label="no active jobs"]
       LIGHT_STATE_INACTIVE -> LIGHT_STATE_OVERRIDE [label="deep goes to STATE_IDLE"]

       LIGHT_STATE_PRE_IDLE -> LIGHT_STATE_ACTIVE [label="becomeActiveLocked()"]
       LIGHT_STATE_PRE_IDLE -> LIGHT_STATE_IDLE [
         label="stepLightIdleStateLocked(), exitMaintenanceEarlyIfNeededLocked()"
       ]
       LIGHT_STATE_PRE_IDLE -> LIGHT_STATE_OVERRIDE [label="deep goes to STATE_IDLE"]

       LIGHT_STATE_IDLE -> LIGHT_STATE_ACTIVE [label="becomeActiveLocked()"]
       LIGHT_STATE_IDLE -> LIGHT_STATE_WAITING_FOR_NETWORK [label="no network"]
       LIGHT_STATE_IDLE -> LIGHT_STATE_IDLE_MAINTENANCE
       LIGHT_STATE_IDLE -> LIGHT_STATE_OVERRIDE [label="deep goes to STATE_IDLE"]

       LIGHT_STATE_WAITING_FOR_NETWORK -> LIGHT_STATE_ACTIVE [label="becomeActiveLocked()"]
       LIGHT_STATE_WAITING_FOR_NETWORK -> LIGHT_STATE_IDLE_MAINTENANCE
       LIGHT_STATE_WAITING_FOR_NETWORK -> LIGHT_STATE_OVERRIDE [
         label="deep goes to STATE_IDLE"
       ]

       LIGHT_STATE_IDLE_MAINTENANCE -> LIGHT_STATE_ACTIVE [label="becomeActiveLocked()"]
       LIGHT_STATE_IDLE_MAINTENANCE -> LIGHT_STATE_IDLE [
         label="stepLightIdleStateLocked(), exitMaintenanceEarlyIfNeededLocked()"
       ]
       LIGHT_STATE_IDLE_MAINTENANCE -> LIGHT_STATE_OVERRIDE [label="deep goes to STATE_IDLE"]

       LIGHT_STATE_OVERRIDE -> LIGHT_STATE_ACTIVE [
         label="handleMotionDetectedLocked(), becomeActiveLocked()"
       ]
     }
   }
   </pre>
 */
public class DeviceIdleController extends SystemService
        implements AnyMotionDetector.DeviceIdleCallback {
    private static final String TAG = "DeviceIdleController";

    private static final boolean DEBUG = false;

    private static final boolean COMPRESS_TIME = false;

    private static final int EVENT_BUFFER_SIZE = 100;

    private AlarmManager mAlarmManager;
    private AlarmManagerInternal mLocalAlarmManager;
    private IBatteryStats mBatteryStats;
    private ActivityManagerInternal mLocalActivityManager;
    private ActivityTaskManagerInternal mLocalActivityTaskManager;
    private DeviceIdleInternal mLocalService;
    private PowerManagerInternal mLocalPowerManager;
    private PowerManager mPowerManager;
    private INetworkPolicyManager mNetworkPolicyManager;
    private SensorManager mSensorManager;
    private final boolean mUseMotionSensor;
    private Sensor mMotionSensor;
    private LocationRequest mLocationRequest;
    private Intent mIdleIntent;
    private Intent mLightIdleIntent;
    private AnyMotionDetector mAnyMotionDetector;
    private final AppStateTracker mAppStateTracker;
    private boolean mLightEnabled;
    private boolean mDeepEnabled;
    private boolean mQuickDozeActivated;
    private boolean mQuickDozeActivatedWhileIdling;
    private boolean mForceIdle;
    private boolean mNetworkConnected;
    private boolean mScreenOn;
    private boolean mCharging;
    private boolean mNotMoving;
    private boolean mLocating;
    private boolean mLocated;
    private boolean mHasGps;
    private boolean mHasNetworkLocation;
    private Location mLastGenericLocation;
    private Location mLastGpsLocation;

    /** Time in the elapsed realtime timebase when this listener last received a motion event. */
    private long mLastMotionEventElapsed;

    // Current locked state of the screen
    private boolean mScreenLocked;
    private int mNumBlockingConstraints = 0;

    /**
     * Constraints are the "handbrakes" that stop the device from moving into a lower state until
     * every one is released at the same time.
     *
     * @see #registerDeviceIdleConstraintInternal(IDeviceIdleConstraint, String, int)
     */
    private final ArrayMap<IDeviceIdleConstraint, DeviceIdleConstraintTracker>
            mConstraints = new ArrayMap<>();
    private ConstraintController mConstraintController;

    /** Device is currently active. */
    @VisibleForTesting
    static final int STATE_ACTIVE = 0;
    /** Device is inactive (screen off, no motion) and we are waiting to for idle. */
    @VisibleForTesting
    static final int STATE_INACTIVE = 1;
    /** Device is past the initial inactive period, and waiting for the next idle period. */
    @VisibleForTesting
    static final int STATE_IDLE_PENDING = 2;
    /** Device is currently sensing motion. */
    @VisibleForTesting
    static final int STATE_SENSING = 3;
    /** Device is currently finding location (and may still be sensing). */
    @VisibleForTesting
    static final int STATE_LOCATING = 4;
    /** Device is in the idle state, trying to stay asleep as much as possible. */
    @VisibleForTesting
    static final int STATE_IDLE = 5;
    /** Device is in the idle state, but temporarily out of idle to do regular maintenance. */
    @VisibleForTesting
    static final int STATE_IDLE_MAINTENANCE = 6;
    /**
     * Device is inactive and should go straight into idle (foregoing motion and location
     * monitoring), but allow some time for current work to complete first.
     */
    @VisibleForTesting
    static final int STATE_QUICK_DOZE_DELAY = 7;

    private static final int ACTIVE_REASON_UNKNOWN = 0;
    private static final int ACTIVE_REASON_MOTION = 1;
    private static final int ACTIVE_REASON_SCREEN = 2;
    private static final int ACTIVE_REASON_CHARGING = 3;
    private static final int ACTIVE_REASON_UNLOCKED = 4;
    private static final int ACTIVE_REASON_FROM_BINDER_CALL = 5;
    private static final int ACTIVE_REASON_FORCED = 6;
    private static final int ACTIVE_REASON_ALARM = 7;
    @VisibleForTesting
    static final int SET_IDLE_FACTOR_RESULT_UNINIT = -1;
    @VisibleForTesting
    static final int SET_IDLE_FACTOR_RESULT_IGNORED = 0;
    @VisibleForTesting
    static final int SET_IDLE_FACTOR_RESULT_OK = 1;
    @VisibleForTesting
    static final int SET_IDLE_FACTOR_RESULT_NOT_SUPPORT = 2;
    @VisibleForTesting
    static final int SET_IDLE_FACTOR_RESULT_INVALID = 3;
    @VisibleForTesting
    static final long MIN_STATE_STEP_ALARM_CHANGE = 60 * 1000;
    @VisibleForTesting
    static final float MIN_PRE_IDLE_FACTOR_CHANGE = 0.05f;

    @VisibleForTesting
    static String stateToString(int state) {
        switch (state) {
            case STATE_ACTIVE: return "ACTIVE";
            case STATE_INACTIVE: return "INACTIVE";
            case STATE_IDLE_PENDING: return "IDLE_PENDING";
            case STATE_SENSING: return "SENSING";
            case STATE_LOCATING: return "LOCATING";
            case STATE_IDLE: return "IDLE";
            case STATE_IDLE_MAINTENANCE: return "IDLE_MAINTENANCE";
            case STATE_QUICK_DOZE_DELAY: return "QUICK_DOZE_DELAY";
            default: return Integer.toString(state);
        }
    }

    /** Device is currently active. */
    @VisibleForTesting
    static final int LIGHT_STATE_ACTIVE = 0;
    /** Device is inactive (screen off) and we are waiting to for the first light idle. */
    @VisibleForTesting
    static final int LIGHT_STATE_INACTIVE = 1;
    /** Device is about to go idle for the first time, wait for current work to complete. */
    @VisibleForTesting
    static final int LIGHT_STATE_PRE_IDLE = 3;
    /** Device is in the light idle state, trying to stay asleep as much as possible. */
    @VisibleForTesting
    static final int LIGHT_STATE_IDLE = 4;
    /** Device is in the light idle state, we want to go in to idle maintenance but are
     * waiting for network connectivity before doing so. */
    @VisibleForTesting
    static final int LIGHT_STATE_WAITING_FOR_NETWORK = 5;
    /** Device is in the light idle state, but temporarily out of idle to do regular maintenance. */
    @VisibleForTesting
    static final int LIGHT_STATE_IDLE_MAINTENANCE = 6;
    /** Device light idle state is overriden, now applying deep doze state. */
    @VisibleForTesting
    static final int LIGHT_STATE_OVERRIDE = 7;

    @VisibleForTesting
    static String lightStateToString(int state) {
        switch (state) {
            case LIGHT_STATE_ACTIVE: return "ACTIVE";
            case LIGHT_STATE_INACTIVE: return "INACTIVE";
            case LIGHT_STATE_PRE_IDLE: return "PRE_IDLE";
            case LIGHT_STATE_IDLE: return "IDLE";
            case LIGHT_STATE_WAITING_FOR_NETWORK: return "WAITING_FOR_NETWORK";
            case LIGHT_STATE_IDLE_MAINTENANCE: return "IDLE_MAINTENANCE";
            case LIGHT_STATE_OVERRIDE: return "OVERRIDE";
            default: return Integer.toString(state);
        }
    }

    private int mState;
    private int mLightState;

    private long mInactiveTimeout;
    private long mNextAlarmTime;
    private long mNextIdlePendingDelay;
    private long mNextIdleDelay;
    private long mNextLightIdleDelay;
    private long mNextLightAlarmTime;
    private long mNextSensingTimeoutAlarmTime;

    /** How long a light idle maintenance window should last. */
    private long mCurLightIdleBudget;

    /**
     * Start time of the current (light or full) maintenance window, in the elapsed timebase. Valid
     * only if {@link #mState} == {@link #STATE_IDLE_MAINTENANCE} or
     * {@link #mLightState} == {@link #LIGHT_STATE_IDLE_MAINTENANCE}.
     */
    private long mMaintenanceStartTime;
    private long mIdleStartTime;

    private int mActiveIdleOpCount;
    private PowerManager.WakeLock mActiveIdleWakeLock; // held when there are operations in progress
    private PowerManager.WakeLock mGoingIdleWakeLock;  // held when we are going idle so hardware
                                                       // (especially NetworkPolicyManager) can shut
                                                       // down.
    private boolean mJobsActive;
    private boolean mAlarmsActive;

    /* Factor to apply to INACTIVE_TIMEOUT and IDLE_AFTER_INACTIVE_TIMEOUT in order to enter
     * STATE_IDLE faster or slower. Don't apply this to SENSING_TIMEOUT or LOCATING_TIMEOUT because:
     *   - Both of them are shorter
     *   - Device sensor might take time be to become be stabilized
     * Also don't apply the factor if the device is in motion because device motion provides a
     * stronger signal than a prediction algorithm.
     */
    private float mPreIdleFactor;
    private float mLastPreIdleFactor;
    private int mActiveReason;

    public final AtomicFile mConfigFile;

    /**
     * Package names the system has white-listed to opt out of power save restrictions,
     * except for device idle mode.
     */
    private final ArrayMap<String, Integer> mPowerSaveWhitelistAppsExceptIdle = new ArrayMap<>();

    /**
     * Package names the user has white-listed using commandline option to opt out of
     * power save restrictions, except for device idle mode.
     */
    private final ArraySet<String> mPowerSaveWhitelistUserAppsExceptIdle = new ArraySet<>();

    /**
     * Package names the system has white-listed to opt out of power save restrictions for
     * all modes.
     */
    private final ArrayMap<String, Integer> mPowerSaveWhitelistApps = new ArrayMap<>();

    /**
     * Package names the user has white-listed to opt out of power save restrictions.
     */
    private final ArrayMap<String, Integer> mPowerSaveWhitelistUserApps = new ArrayMap<>();

    /**
     * App IDs of built-in system apps that have been white-listed except for idle modes.
     */
    private final SparseBooleanArray mPowerSaveWhitelistSystemAppIdsExceptIdle
            = new SparseBooleanArray();

    /**
     * App IDs of built-in system apps that have been white-listed.
     */
    private final SparseBooleanArray mPowerSaveWhitelistSystemAppIds = new SparseBooleanArray();

    /**
     * App IDs that have been white-listed to opt out of power save restrictions, except
     * for device idle modes.
     */
    private final SparseBooleanArray mPowerSaveWhitelistExceptIdleAppIds = new SparseBooleanArray();

    /**
     * Current app IDs that are in the complete power save white list, but shouldn't be
     * excluded from idle modes.  This array can be shared with others because it will not be
     * modified once set.
     */
    private int[] mPowerSaveWhitelistExceptIdleAppIdArray = new int[0];

    /**
     * App IDs that have been white-listed to opt out of power save restrictions.
     */
    private final SparseBooleanArray mPowerSaveWhitelistAllAppIds = new SparseBooleanArray();

    /**
     * Current app IDs that are in the complete power save white list.  This array can
     * be shared with others because it will not be modified once set.
     */
    private int[] mPowerSaveWhitelistAllAppIdArray = new int[0];

    /**
     * App IDs that have been white-listed by the user to opt out of power save restrictions.
     */
    private final SparseBooleanArray mPowerSaveWhitelistUserAppIds = new SparseBooleanArray();

    /**
     * Current app IDs that are in the user power save white list.  This array can
     * be shared with others because it will not be modified once set.
     */
    private int[] mPowerSaveWhitelistUserAppIdArray = new int[0];

    /**
     * List of end times for UIDs that are temporarily marked as being allowed to access
     * the network and acquire wakelocks. Times are in milliseconds.
     */
    private final SparseArray<Pair<MutableLong, String>> mTempWhitelistAppIdEndTimes
            = new SparseArray<>();

    private NetworkPolicyManagerInternal mNetworkPolicyManagerInternal;

    /**
     * Current app IDs of temporarily whitelist apps for high-priority messages.
     */
    private int[] mTempWhitelistAppIdArray = new int[0];

    /**
     * Apps in the system whitelist that have been taken out (probably because the user wanted to).
     * They can be restored back by calling restoreAppToSystemWhitelist(String).
     */
    private ArrayMap<String, Integer> mRemovedFromSystemWhitelistApps = new ArrayMap<>();

    private final ArraySet<DeviceIdleInternal.StationaryListener> mStationaryListeners =
            new ArraySet<>();

    private static final int EVENT_NULL = 0;
    private static final int EVENT_NORMAL = 1;
    private static final int EVENT_LIGHT_IDLE = 2;
    private static final int EVENT_LIGHT_MAINTENANCE = 3;
    private static final int EVENT_DEEP_IDLE = 4;
    private static final int EVENT_DEEP_MAINTENANCE = 5;

    private final int[] mEventCmds = new int[EVENT_BUFFER_SIZE];
    private final long[] mEventTimes = new long[EVENT_BUFFER_SIZE];
    private final String[] mEventReasons = new String[EVENT_BUFFER_SIZE];

    private void addEvent(int cmd, String reason) {
        if (mEventCmds[0] != cmd) {
            System.arraycopy(mEventCmds, 0, mEventCmds, 1, EVENT_BUFFER_SIZE - 1);
            System.arraycopy(mEventTimes, 0, mEventTimes, 1, EVENT_BUFFER_SIZE - 1);
            System.arraycopy(mEventReasons, 0, mEventReasons, 1, EVENT_BUFFER_SIZE - 1);
            mEventCmds[0] = cmd;
            mEventTimes[0] = SystemClock.elapsedRealtime();
            mEventReasons[0] = reason;
        }
    }

    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
        @Override public void onReceive(Context context, Intent intent) {
            switch (intent.getAction()) {
                case ConnectivityManager.CONNECTIVITY_ACTION: {
                    updateConnectivityState(intent);
                } break;
                case Intent.ACTION_BATTERY_CHANGED: {
                    boolean present = intent.getBooleanExtra(BatteryManager.EXTRA_PRESENT, true);
                    boolean plugged = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0) != 0;
                    synchronized (DeviceIdleController.this) {
                        updateChargingLocked(present && plugged);
                    }
                } break;
                case Intent.ACTION_PACKAGE_REMOVED: {
                    if (!intent.getBooleanExtra(Intent.EXTRA_REPLACING, false)) {
                        Uri data = intent.getData();
                        String ssp;
                        if (data != null && (ssp = data.getSchemeSpecificPart()) != null) {
                            removePowerSaveWhitelistAppInternal(ssp);
                        }
                    }
                } break;
            }
        }
    };

    private final AlarmManager.OnAlarmListener mLightAlarmListener
            = new AlarmManager.OnAlarmListener() {
        @Override
        public void onAlarm() {
            synchronized (DeviceIdleController.this) {
                stepLightIdleStateLocked("s:alarm");
            }
        }
    };

    /** AlarmListener to start monitoring motion if there are registered stationary listeners. */
    private final AlarmManager.OnAlarmListener mMotionRegistrationAlarmListener = () -> {
        synchronized (DeviceIdleController.this) {
            if (mStationaryListeners.size() > 0) {
                startMonitoringMotionLocked();
            }
        }
    };

    private final AlarmManager.OnAlarmListener mMotionTimeoutAlarmListener = () -> {
        synchronized (DeviceIdleController.this) {
            if (!isStationaryLocked()) {
                // If the device keeps registering motion, then the alarm should be
                // rescheduled, so this shouldn't go off until the device is stationary.
                // This case may happen in a race condition (alarm goes off right before
                // motion is detected, but handleMotionDetectedLocked is called before
                // we enter this block).
                Slog.w(TAG, "motion timeout went off and device isn't stationary");
                return;
            }
        }
        postStationaryStatusUpdated();
    };

    private final AlarmManager.OnAlarmListener mSensingTimeoutAlarmListener
            = new AlarmManager.OnAlarmListener() {
        @Override
        public void onAlarm() {
            if (mState == STATE_SENSING) {
                synchronized (DeviceIdleController.this) {
                    // Restart the device idle progression in case the device moved but the screen
                    // didn't turn on.
                    becomeInactiveIfAppropriateLocked();
                }
            }
        }
    };

    @VisibleForTesting
    final AlarmManager.OnAlarmListener mDeepAlarmListener
            = new AlarmManager.OnAlarmListener() {
        @Override
        public void onAlarm() {
            synchronized (DeviceIdleController.this) {
                stepIdleStateLocked("s:alarm");
            }
        }
    };

    private final BroadcastReceiver mIdleStartedDoneReceiver = new BroadcastReceiver() {
        @Override public void onReceive(Context context, Intent intent) {
            // When coming out of a deep idle, we will add in some delay before we allow
            // the system to settle down and finish the maintenance window.  This is
            // to give a chance for any pending work to be scheduled.
            if (PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED.equals(intent.getAction())) {
                mHandler.sendEmptyMessageDelayed(MSG_FINISH_IDLE_OP,
                        mConstants.MIN_DEEP_MAINTENANCE_TIME);
            } else {
                mHandler.sendEmptyMessageDelayed(MSG_FINISH_IDLE_OP,
                        mConstants.MIN_LIGHT_MAINTENANCE_TIME);
            }
        }
    };

    private final BroadcastReceiver mInteractivityReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            synchronized (DeviceIdleController.this) {
                updateInteractivityLocked();
            }
        }
    };

    /** Post stationary status only to this listener. */
    private void postStationaryStatus(DeviceIdleInternal.StationaryListener listener) {
        mHandler.obtainMessage(MSG_REPORT_STATIONARY_STATUS, listener).sendToTarget();
    }

    /** Post stationary status to all registered listeners. */
    private void postStationaryStatusUpdated() {
        mHandler.sendEmptyMessage(MSG_REPORT_STATIONARY_STATUS);
    }

    private boolean isStationaryLocked() {
        final long now = mInjector.getElapsedRealtime();
        return mMotionListener.active
                // Listening for motion for long enough and last motion was long enough ago.
                && now - Math.max(mMotionListener.activatedTimeElapsed, mLastMotionEventElapsed)
                        >= mConstants.MOTION_INACTIVE_TIMEOUT;
    }

    @VisibleForTesting
    void registerStationaryListener(DeviceIdleInternal.StationaryListener listener) {
        synchronized (this) {
            if (!mStationaryListeners.add(listener)) {
                // Listener already registered.
                return;
            }
            postStationaryStatus(listener);
            if (mMotionListener.active) {
                if (!isStationaryLocked() && mStationaryListeners.size() == 1) {
                    // First listener to be registered and the device isn't stationary, so we
                    // need to register the alarm to report the device is stationary.
                    scheduleMotionTimeoutAlarmLocked();
                }
            } else {
                startMonitoringMotionLocked();
                scheduleMotionTimeoutAlarmLocked();
            }
        }
    }

    private void unregisterStationaryListener(DeviceIdleInternal.StationaryListener listener) {
        synchronized (this) {
            if (mStationaryListeners.remove(listener) && mStationaryListeners.size() == 0
                    // Motion detection is started when transitioning from INACTIVE to IDLE_PENDING
                    // and so doesn't need to be on for ACTIVE or INACTIVE states.
                    // Motion detection isn't needed when idling due to Quick Doze.
                    && (mState == STATE_ACTIVE || mState == STATE_INACTIVE
                            || mQuickDozeActivated)) {
                maybeStopMonitoringMotionLocked();
            }
        }
    }

    @VisibleForTesting
    final class MotionListener extends TriggerEventListener
            implements SensorEventListener {

        boolean active = false;

        /**
         * Time in the elapsed realtime timebase when this listener was activated. Only valid if
         * {@link #active} is true.
         */
        long activatedTimeElapsed;

        public boolean isActive() {
            return active;
        }

        @Override
        public void onTrigger(TriggerEvent event) {
            synchronized (DeviceIdleController.this) {
                // One_shot sensors (which call onTrigger) are unregistered when onTrigger is called
                active = false;
                motionLocked();
            }
        }

        @Override
        public void onSensorChanged(SensorEvent event) {
            synchronized (DeviceIdleController.this) {
                // Since one_shot sensors are unregistered when onTrigger is called, unregister
                // listeners here so that the MotionListener is in a consistent state when it calls
                // out to motionLocked.
                mSensorManager.unregisterListener(this, mMotionSensor);
                active = false;
                motionLocked();
            }
        }

        @Override
        public void onAccuracyChanged(Sensor sensor, int accuracy) {}

        public boolean registerLocked() {
            boolean success;
            if (mMotionSensor.getReportingMode() == Sensor.REPORTING_MODE_ONE_SHOT) {
                success = mSensorManager.requestTriggerSensor(mMotionListener, mMotionSensor);
            } else {
                success = mSensorManager.registerListener(
                        mMotionListener, mMotionSensor, SensorManager.SENSOR_DELAY_NORMAL);
            }
            if (success) {
                active = true;
                activatedTimeElapsed = mInjector.getElapsedRealtime();
            } else {
                Slog.e(TAG, "Unable to register for " + mMotionSensor);
            }
            return success;
        }

        public void unregisterLocked() {
            if (mMotionSensor.getReportingMode() == Sensor.REPORTING_MODE_ONE_SHOT) {
                mSensorManager.cancelTriggerSensor(mMotionListener, mMotionSensor);
            } else {
                mSensorManager.unregisterListener(mMotionListener);
            }
            active = false;
        }
    }
    @VisibleForTesting final MotionListener mMotionListener = new MotionListener();

    private final LocationListener mGenericLocationListener = new LocationListener() {
        @Override
        public void onLocationChanged(Location location) {
            synchronized (DeviceIdleController.this) {
                receivedGenericLocationLocked(location);
            }
        }

        @Override
        public void onStatusChanged(String provider, int status, Bundle extras) {
        }

        @Override
        public void onProviderEnabled(String provider) {
        }

        @Override
        public void onProviderDisabled(String provider) {
        }
    };

    private final LocationListener mGpsLocationListener = new LocationListener() {
        @Override
        public void onLocationChanged(Location location) {
            synchronized (DeviceIdleController.this) {
                receivedGpsLocationLocked(location);
            }
        }

        @Override
        public void onStatusChanged(String provider, int status, Bundle extras) {
        }

        @Override
        public void onProviderEnabled(String provider) {
        }

        @Override
        public void onProviderDisabled(String provider) {
        }
    };

    /**
     * All times are in milliseconds. These constants are kept synchronized with the system
     * global Settings. Any access to this class or its fields should be done while
     * holding the DeviceIdleController lock.
     */
    public final class Constants extends ContentObserver {
        // Key names stored in the settings value.
        private static final String KEY_LIGHT_IDLE_AFTER_INACTIVE_TIMEOUT
                = "light_after_inactive_to";
        private static final String KEY_LIGHT_PRE_IDLE_TIMEOUT = "light_pre_idle_to";
        private static final String KEY_LIGHT_IDLE_TIMEOUT = "light_idle_to";
        private static final String KEY_LIGHT_IDLE_FACTOR = "light_idle_factor";
        private static final String KEY_LIGHT_MAX_IDLE_TIMEOUT = "light_max_idle_to";
        private static final String KEY_LIGHT_IDLE_MAINTENANCE_MIN_BUDGET
                = "light_idle_maintenance_min_budget";
        private static final String KEY_LIGHT_IDLE_MAINTENANCE_MAX_BUDGET
                = "light_idle_maintenance_max_budget";
        private static final String KEY_MIN_LIGHT_MAINTENANCE_TIME = "min_light_maintenance_time";
        private static final String KEY_MIN_DEEP_MAINTENANCE_TIME = "min_deep_maintenance_time";
        private static final String KEY_INACTIVE_TIMEOUT = "inactive_to";
        private static final String KEY_SENSING_TIMEOUT = "sensing_to";
        private static final String KEY_LOCATING_TIMEOUT = "locating_to";
        private static final String KEY_LOCATION_ACCURACY = "location_accuracy";
        private static final String KEY_MOTION_INACTIVE_TIMEOUT = "motion_inactive_to";
        private static final String KEY_IDLE_AFTER_INACTIVE_TIMEOUT = "idle_after_inactive_to";
        private static final String KEY_IDLE_PENDING_TIMEOUT = "idle_pending_to";
        private static final String KEY_MAX_IDLE_PENDING_TIMEOUT = "max_idle_pending_to";
        private static final String KEY_IDLE_PENDING_FACTOR = "idle_pending_factor";
        private static final String KEY_QUICK_DOZE_DELAY_TIMEOUT = "quick_doze_delay_to";
        private static final String KEY_IDLE_TIMEOUT = "idle_to";
        private static final String KEY_MAX_IDLE_TIMEOUT = "max_idle_to";
        private static final String KEY_IDLE_FACTOR = "idle_factor";
        private static final String KEY_MIN_TIME_TO_ALARM = "min_time_to_alarm";
        private static final String KEY_MAX_TEMP_APP_WHITELIST_DURATION =
                "max_temp_app_whitelist_duration";
        private static final String KEY_MMS_TEMP_APP_WHITELIST_DURATION =
                "mms_temp_app_whitelist_duration";
        private static final String KEY_SMS_TEMP_APP_WHITELIST_DURATION =
                "sms_temp_app_whitelist_duration";
        private static final String KEY_NOTIFICATION_WHITELIST_DURATION =
                "notification_whitelist_duration";
        /**
         * Whether to wait for the user to unlock the device before causing screen-on to
         * exit doze. Default = true
         */
        private static final String KEY_WAIT_FOR_UNLOCK = "wait_for_unlock";
        private static final String KEY_PRE_IDLE_FACTOR_LONG =
                "pre_idle_factor_long";
        private static final String KEY_PRE_IDLE_FACTOR_SHORT =
                "pre_idle_factor_short";

        /**
         * This is the time, after becoming inactive, that we go in to the first
         * light-weight idle mode.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_LIGHT_IDLE_AFTER_INACTIVE_TIMEOUT
         */
        public long LIGHT_IDLE_AFTER_INACTIVE_TIMEOUT;

        /**
         * This is amount of time we will wait from the point where we decide we would
         * like to go idle until we actually do, while waiting for jobs and other current
         * activity to finish.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_LIGHT_PRE_IDLE_TIMEOUT
         */
        public long LIGHT_PRE_IDLE_TIMEOUT;

        /**
         * This is the initial time that we will run in idle maintenance mode.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_LIGHT_IDLE_TIMEOUT
         */
        public long LIGHT_IDLE_TIMEOUT;

        /**
         * Scaling factor to apply to the light idle mode time each time we complete a cycle.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_LIGHT_IDLE_FACTOR
         */
        public float LIGHT_IDLE_FACTOR;

        /**
         * This is the maximum time we will run in idle maintenance mode.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_LIGHT_MAX_IDLE_TIMEOUT
         */
        public long LIGHT_MAX_IDLE_TIMEOUT;

        /**
         * This is the minimum amount of time we want to make available for maintenance mode
         * when lightly idling.  That is, we will always have at least this amount of time
         * available maintenance before timing out and cutting off maintenance mode.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_LIGHT_IDLE_MAINTENANCE_MIN_BUDGET
         */
        public long LIGHT_IDLE_MAINTENANCE_MIN_BUDGET;

        /**
         * This is the maximum amount of time we want to make available for maintenance mode
         * when lightly idling.  That is, if the system isn't using up its minimum maintenance
         * budget and this time is being added to the budget reserve, this is the maximum
         * reserve size we will allow to grow and thus the maximum amount of time we will
         * allow for the maintenance window.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_LIGHT_IDLE_MAINTENANCE_MAX_BUDGET
         */
        public long LIGHT_IDLE_MAINTENANCE_MAX_BUDGET;

        /**
         * This is the minimum amount of time that we will stay in maintenance mode after
         * a light doze.  We have this minimum to allow various things to respond to switching
         * in to maintenance mode and scheduling their work -- otherwise we may
         * see there is nothing to do (no jobs pending) and go out of maintenance
         * mode immediately.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_MIN_LIGHT_MAINTENANCE_TIME
         */
        public long MIN_LIGHT_MAINTENANCE_TIME;

        /**
         * This is the minimum amount of time that we will stay in maintenance mode after
         * a full doze.  We have this minimum to allow various things to respond to switching
         * in to maintenance mode and scheduling their work -- otherwise we may
         * see there is nothing to do (no jobs pending) and go out of maintenance
         * mode immediately.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_MIN_DEEP_MAINTENANCE_TIME
         */
        public long MIN_DEEP_MAINTENANCE_TIME;

        /**
         * This is the time, after becoming inactive, at which we start looking at the
         * motion sensor to determine if the device is being left alone.  We don't do this
         * immediately after going inactive just because we don't want to be continually running
         * the motion sensor whenever the screen is off.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_INACTIVE_TIMEOUT
         */
        public long INACTIVE_TIMEOUT;

        /**
         * If we don't receive a callback from AnyMotion in this amount of time +
         * {@link #LOCATING_TIMEOUT}, we will change from
         * STATE_SENSING to STATE_INACTIVE, and any AnyMotion callbacks while not in STATE_SENSING
         * will be ignored.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_SENSING_TIMEOUT
         */
        public long SENSING_TIMEOUT;

        /**
         * This is how long we will wait to try to get a good location fix before going in to
         * idle mode.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_LOCATING_TIMEOUT
         */
        public long LOCATING_TIMEOUT;

        /**
         * The desired maximum accuracy (in meters) we consider the location to be good enough to go
         * on to idle.  We will be trying to get an accuracy fix at least this good or until
         * {@link #LOCATING_TIMEOUT} expires.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_LOCATION_ACCURACY
         */
        public float LOCATION_ACCURACY;

        /**
         * This is the time, after seeing motion, that we wait after becoming inactive from
         * that until we start looking for motion again.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_MOTION_INACTIVE_TIMEOUT
         */
        public long MOTION_INACTIVE_TIMEOUT;

        /**
         * This is the time, after the inactive timeout elapses, that we will wait looking
         * for motion until we truly consider the device to be idle.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_IDLE_AFTER_INACTIVE_TIMEOUT
         */
        public long IDLE_AFTER_INACTIVE_TIMEOUT;

        /**
         * This is the initial time, after being idle, that we will allow ourself to be back
         * in the IDLE_MAINTENANCE state allowing the system to run normally until we return to
         * idle.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_IDLE_PENDING_TIMEOUT
         */
        public long IDLE_PENDING_TIMEOUT;

        /**
         * Maximum pending idle timeout (time spent running) we will be allowed to use.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_MAX_IDLE_PENDING_TIMEOUT
         */
        public long MAX_IDLE_PENDING_TIMEOUT;

        /**
         * Scaling factor to apply to current pending idle timeout each time we cycle through
         * that state.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_IDLE_PENDING_FACTOR
         */
        public float IDLE_PENDING_FACTOR;

        /**
         * This is amount of time we will wait from the point where we go into
         * STATE_QUICK_DOZE_DELAY until we actually go into STATE_IDLE, while waiting for jobs
         * and other current activity to finish.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_QUICK_DOZE_DELAY_TIMEOUT
         */
        public long QUICK_DOZE_DELAY_TIMEOUT;

        /**
         * This is the initial time that we want to sit in the idle state before waking up
         * again to return to pending idle and allowing normal work to run.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_IDLE_TIMEOUT
         */
        public long IDLE_TIMEOUT;

        /**
         * Maximum idle duration we will be allowed to use.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_MAX_IDLE_TIMEOUT
         */
        public long MAX_IDLE_TIMEOUT;

        /**
         * Scaling factor to apply to current idle timeout each time we cycle through that state.
          * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_IDLE_FACTOR
         */
        public float IDLE_FACTOR;

        /**
         * This is the minimum time we will allow until the next upcoming alarm for us to
         * actually go in to idle mode.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_MIN_TIME_TO_ALARM
         */
        public long MIN_TIME_TO_ALARM;

        /**
         * Max amount of time to temporarily whitelist an app when it receives a high priority
         * tickle.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_MAX_TEMP_APP_WHITELIST_DURATION
         */
        public long MAX_TEMP_APP_WHITELIST_DURATION;

        /**
         * Amount of time we would like to whitelist an app that is receiving an MMS.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_MMS_TEMP_APP_WHITELIST_DURATION
         */
        public long MMS_TEMP_APP_WHITELIST_DURATION;

        /**
         * Amount of time we would like to whitelist an app that is receiving an SMS.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_SMS_TEMP_APP_WHITELIST_DURATION
         */
        public long SMS_TEMP_APP_WHITELIST_DURATION;

        /**
         * Amount of time we would like to whitelist an app that is handling a
         * {@link android.app.PendingIntent} triggered by a {@link android.app.Notification}.
         * @see Settings.Global#DEVICE_IDLE_CONSTANTS
         * @see #KEY_NOTIFICATION_WHITELIST_DURATION
         */
        public long NOTIFICATION_WHITELIST_DURATION;

        /**
         * Pre idle time factor use to make idle delay longer
         */
        public float PRE_IDLE_FACTOR_LONG;

        /**
         * Pre idle time factor use to make idle delay shorter
         */
        public float PRE_IDLE_FACTOR_SHORT;

        public boolean WAIT_FOR_UNLOCK;

        private final ContentResolver mResolver;
        private final boolean mSmallBatteryDevice;
        private final KeyValueListParser mParser = new KeyValueListParser(',');

        public Constants(Handler handler, ContentResolver resolver) {
            super(handler);
            mResolver = resolver;
            mSmallBatteryDevice = ActivityManager.isSmallBatteryDevice();
            mResolver.registerContentObserver(
                    Settings.Global.getUriFor(Settings.Global.DEVICE_IDLE_CONSTANTS),
                    false, this);
            updateConstants();
        }

        @Override
        public void onChange(boolean selfChange, Uri uri) {
            updateConstants();
        }

        private void updateConstants() {
            synchronized (DeviceIdleController.this) {
                try {
                    mParser.setString(Settings.Global.getString(mResolver,
                            Settings.Global.DEVICE_IDLE_CONSTANTS));
                } catch (IllegalArgumentException e) {
                    // Failed to parse the settings string, log this and move on
                    // with defaults.
                    Slog.e(TAG, "Bad device idle settings", e);
                }

                LIGHT_IDLE_AFTER_INACTIVE_TIMEOUT = mParser.getDurationMillis(
                        KEY_LIGHT_IDLE_AFTER_INACTIVE_TIMEOUT,
                        !COMPRESS_TIME ? 3 * 60 * 1000L : 15 * 1000L);
                LIGHT_PRE_IDLE_TIMEOUT = mParser.getDurationMillis(KEY_LIGHT_PRE_IDLE_TIMEOUT,
                        !COMPRESS_TIME ? 3 * 60 * 1000L : 30 * 1000L);
                LIGHT_IDLE_TIMEOUT = mParser.getDurationMillis(KEY_LIGHT_IDLE_TIMEOUT,
                        !COMPRESS_TIME ? 5 * 60 * 1000L : 15 * 1000L);
                LIGHT_IDLE_FACTOR = mParser.getFloat(KEY_LIGHT_IDLE_FACTOR,
                        2f);
                LIGHT_MAX_IDLE_TIMEOUT = mParser.getDurationMillis(KEY_LIGHT_MAX_IDLE_TIMEOUT,
                        !COMPRESS_TIME ? 15 * 60 * 1000L : 60 * 1000L);
                LIGHT_IDLE_MAINTENANCE_MIN_BUDGET = mParser.getDurationMillis(
                        KEY_LIGHT_IDLE_MAINTENANCE_MIN_BUDGET,
                        !COMPRESS_TIME ? 1 * 60 * 1000L : 15 * 1000L);
                LIGHT_IDLE_MAINTENANCE_MAX_BUDGET = mParser.getDurationMillis(
                        KEY_LIGHT_IDLE_MAINTENANCE_MAX_BUDGET,
                        !COMPRESS_TIME ? 5 * 60 * 1000L : 30 * 1000L);
                MIN_LIGHT_MAINTENANCE_TIME = mParser.getDurationMillis(
                        KEY_MIN_LIGHT_MAINTENANCE_TIME,
                        !COMPRESS_TIME ? 5 * 1000L : 1 * 1000L);
                MIN_DEEP_MAINTENANCE_TIME = mParser.getDurationMillis(
                        KEY_MIN_DEEP_MAINTENANCE_TIME,
                        !COMPRESS_TIME ? 30 * 1000L : 5 * 1000L);
                long inactiveTimeoutDefault = (mSmallBatteryDevice ? 15 : 30) * 60 * 1000L;
                INACTIVE_TIMEOUT = mParser.getDurationMillis(KEY_INACTIVE_TIMEOUT,
                        !COMPRESS_TIME ? inactiveTimeoutDefault : (inactiveTimeoutDefault / 10));
                SENSING_TIMEOUT = mParser.getDurationMillis(KEY_SENSING_TIMEOUT,
                        !COMPRESS_TIME ? 4 * 60 * 1000L : 60 * 1000L);
                LOCATING_TIMEOUT = mParser.getDurationMillis(KEY_LOCATING_TIMEOUT,
                        !COMPRESS_TIME ? 30 * 1000L : 15 * 1000L);
                LOCATION_ACCURACY = mParser.getFloat(KEY_LOCATION_ACCURACY, 20);
                MOTION_INACTIVE_TIMEOUT = mParser.getDurationMillis(KEY_MOTION_INACTIVE_TIMEOUT,
                        !COMPRESS_TIME ? 10 * 60 * 1000L : 60 * 1000L);
                long idleAfterInactiveTimeout = (mSmallBatteryDevice ? 15 : 30) * 60 * 1000L;
                IDLE_AFTER_INACTIVE_TIMEOUT = mParser.getDurationMillis(
                        KEY_IDLE_AFTER_INACTIVE_TIMEOUT,
                        !COMPRESS_TIME ? idleAfterInactiveTimeout
                                       : (idleAfterInactiveTimeout / 10));
                IDLE_PENDING_TIMEOUT = mParser.getDurationMillis(KEY_IDLE_PENDING_TIMEOUT,
                        !COMPRESS_TIME ? 5 * 60 * 1000L : 30 * 1000L);
                MAX_IDLE_PENDING_TIMEOUT = mParser.getDurationMillis(KEY_MAX_IDLE_PENDING_TIMEOUT,
                        !COMPRESS_TIME ? 10 * 60 * 1000L : 60 * 1000L);
                IDLE_PENDING_FACTOR = mParser.getFloat(KEY_IDLE_PENDING_FACTOR,
                        2f);
                QUICK_DOZE_DELAY_TIMEOUT = mParser.getDurationMillis(
                        KEY_QUICK_DOZE_DELAY_TIMEOUT, !COMPRESS_TIME ? 60 * 1000L : 15 * 1000L);
                IDLE_TIMEOUT = mParser.getDurationMillis(KEY_IDLE_TIMEOUT,
                        !COMPRESS_TIME ? 60 * 60 * 1000L : 6 * 60 * 1000L);
                MAX_IDLE_TIMEOUT = mParser.getDurationMillis(KEY_MAX_IDLE_TIMEOUT,
                        !COMPRESS_TIME ? 6 * 60 * 60 * 1000L : 30 * 60 * 1000L);
                IDLE_FACTOR = mParser.getFloat(KEY_IDLE_FACTOR,
                        2f);
                MIN_TIME_TO_ALARM = mParser.getDurationMillis(KEY_MIN_TIME_TO_ALARM,
                        !COMPRESS_TIME ? 30 * 60 * 1000L : 6 * 60 * 1000L);
                MAX_TEMP_APP_WHITELIST_DURATION = mParser.getDurationMillis(
                        KEY_MAX_TEMP_APP_WHITELIST_DURATION, 5 * 60 * 1000L);
                MMS_TEMP_APP_WHITELIST_DURATION = mParser.getDurationMillis(
                        KEY_MMS_TEMP_APP_WHITELIST_DURATION, 60 * 1000L);
                SMS_TEMP_APP_WHITELIST_DURATION = mParser.getDurationMillis(
                        KEY_SMS_TEMP_APP_WHITELIST_DURATION, 20 * 1000L);
                NOTIFICATION_WHITELIST_DURATION = mParser.getDurationMillis(
                        KEY_NOTIFICATION_WHITELIST_DURATION, 30 * 1000L);
                WAIT_FOR_UNLOCK = mParser.getBoolean(KEY_WAIT_FOR_UNLOCK, true);
                PRE_IDLE_FACTOR_LONG = mParser.getFloat(KEY_PRE_IDLE_FACTOR_LONG, 1.67f);
                PRE_IDLE_FACTOR_SHORT = mParser.getFloat(KEY_PRE_IDLE_FACTOR_SHORT, 0.33f);
            }
        }

        void dump(PrintWriter pw) {
            pw.println("  Settings:");

            pw.print("    "); pw.print(KEY_LIGHT_IDLE_AFTER_INACTIVE_TIMEOUT); pw.print("=");
            TimeUtils.formatDuration(LIGHT_IDLE_AFTER_INACTIVE_TIMEOUT, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_LIGHT_PRE_IDLE_TIMEOUT); pw.print("=");
            TimeUtils.formatDuration(LIGHT_PRE_IDLE_TIMEOUT, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_LIGHT_IDLE_TIMEOUT); pw.print("=");
            TimeUtils.formatDuration(LIGHT_IDLE_TIMEOUT, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_LIGHT_IDLE_FACTOR); pw.print("=");
            pw.print(LIGHT_IDLE_FACTOR);
            pw.println();

            pw.print("    "); pw.print(KEY_LIGHT_MAX_IDLE_TIMEOUT); pw.print("=");
            TimeUtils.formatDuration(LIGHT_MAX_IDLE_TIMEOUT, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_LIGHT_IDLE_MAINTENANCE_MIN_BUDGET); pw.print("=");
            TimeUtils.formatDuration(LIGHT_IDLE_MAINTENANCE_MIN_BUDGET, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_LIGHT_IDLE_MAINTENANCE_MAX_BUDGET); pw.print("=");
            TimeUtils.formatDuration(LIGHT_IDLE_MAINTENANCE_MAX_BUDGET, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_MIN_LIGHT_MAINTENANCE_TIME); pw.print("=");
            TimeUtils.formatDuration(MIN_LIGHT_MAINTENANCE_TIME, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_MIN_DEEP_MAINTENANCE_TIME); pw.print("=");
            TimeUtils.formatDuration(MIN_DEEP_MAINTENANCE_TIME, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_INACTIVE_TIMEOUT); pw.print("=");
            TimeUtils.formatDuration(INACTIVE_TIMEOUT, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_SENSING_TIMEOUT); pw.print("=");
            TimeUtils.formatDuration(SENSING_TIMEOUT, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_LOCATING_TIMEOUT); pw.print("=");
            TimeUtils.formatDuration(LOCATING_TIMEOUT, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_LOCATION_ACCURACY); pw.print("=");
            pw.print(LOCATION_ACCURACY); pw.print("m");
            pw.println();

            pw.print("    "); pw.print(KEY_MOTION_INACTIVE_TIMEOUT); pw.print("=");
            TimeUtils.formatDuration(MOTION_INACTIVE_TIMEOUT, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_IDLE_AFTER_INACTIVE_TIMEOUT); pw.print("=");
            TimeUtils.formatDuration(IDLE_AFTER_INACTIVE_TIMEOUT, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_IDLE_PENDING_TIMEOUT); pw.print("=");
            TimeUtils.formatDuration(IDLE_PENDING_TIMEOUT, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_MAX_IDLE_PENDING_TIMEOUT); pw.print("=");
            TimeUtils.formatDuration(MAX_IDLE_PENDING_TIMEOUT, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_IDLE_PENDING_FACTOR); pw.print("=");
            pw.println(IDLE_PENDING_FACTOR);

            pw.print("    "); pw.print(KEY_QUICK_DOZE_DELAY_TIMEOUT); pw.print("=");
            TimeUtils.formatDuration(QUICK_DOZE_DELAY_TIMEOUT, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_IDLE_TIMEOUT); pw.print("=");
            TimeUtils.formatDuration(IDLE_TIMEOUT, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_MAX_IDLE_TIMEOUT); pw.print("=");
            TimeUtils.formatDuration(MAX_IDLE_TIMEOUT, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_IDLE_FACTOR); pw.print("=");
            pw.println(IDLE_FACTOR);

            pw.print("    "); pw.print(KEY_MIN_TIME_TO_ALARM); pw.print("=");
            TimeUtils.formatDuration(MIN_TIME_TO_ALARM, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_MAX_TEMP_APP_WHITELIST_DURATION); pw.print("=");
            TimeUtils.formatDuration(MAX_TEMP_APP_WHITELIST_DURATION, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_MMS_TEMP_APP_WHITELIST_DURATION); pw.print("=");
            TimeUtils.formatDuration(MMS_TEMP_APP_WHITELIST_DURATION, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_SMS_TEMP_APP_WHITELIST_DURATION); pw.print("=");
            TimeUtils.formatDuration(SMS_TEMP_APP_WHITELIST_DURATION, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_NOTIFICATION_WHITELIST_DURATION); pw.print("=");
            TimeUtils.formatDuration(NOTIFICATION_WHITELIST_DURATION, pw);
            pw.println();

            pw.print("    "); pw.print(KEY_WAIT_FOR_UNLOCK); pw.print("=");
            pw.println(WAIT_FOR_UNLOCK);

            pw.print("    "); pw.print(KEY_PRE_IDLE_FACTOR_LONG); pw.print("=");
            pw.println(PRE_IDLE_FACTOR_LONG);

            pw.print("    "); pw.print(KEY_PRE_IDLE_FACTOR_SHORT); pw.print("=");
            pw.println(PRE_IDLE_FACTOR_SHORT);
        }
    }

    private Constants mConstants;

    @Override
    public void onAnyMotionResult(int result) {
        if (DEBUG) Slog.d(TAG, "onAnyMotionResult(" + result + ")");
        if (result != AnyMotionDetector.RESULT_UNKNOWN) {
            synchronized (this) {
                cancelSensingTimeoutAlarmLocked();
            }
        }
        if ((result == AnyMotionDetector.RESULT_MOVED) ||
            (result == AnyMotionDetector.RESULT_UNKNOWN)) {
            synchronized (this) {
                handleMotionDetectedLocked(mConstants.INACTIVE_TIMEOUT, "non_stationary");
            }
        } else if (result == AnyMotionDetector.RESULT_STATIONARY) {
            if (mState == STATE_SENSING) {
                // If we are currently sensing, it is time to move to locating.
                synchronized (this) {
                    mNotMoving = true;
                    stepIdleStateLocked("s:stationary");
                }
            } else if (mState == STATE_LOCATING) {
                // If we are currently locating, note that we are not moving and step
                // if we have located the position.
                synchronized (this) {
                    mNotMoving = true;
                    if (mLocated) {
                        stepIdleStateLocked("s:stationary");
                    }
                }
            }
        }
    }

    private static final int MSG_WRITE_CONFIG = 1;
    private static final int MSG_REPORT_IDLE_ON = 2;
    private static final int MSG_REPORT_IDLE_ON_LIGHT = 3;
    private static final int MSG_REPORT_IDLE_OFF = 4;
    private static final int MSG_REPORT_ACTIVE = 5;
    private static final int MSG_TEMP_APP_WHITELIST_TIMEOUT = 6;
    @VisibleForTesting
    static final int MSG_REPORT_STATIONARY_STATUS = 7;
    private static final int MSG_FINISH_IDLE_OP = 8;
    private static final int MSG_REPORT_TEMP_APP_WHITELIST_CHANGED = 9;
    private static final int MSG_SEND_CONSTRAINT_MONITORING = 10;
    @VisibleForTesting
    static final int MSG_UPDATE_PRE_IDLE_TIMEOUT_FACTOR = 11;
    @VisibleForTesting
    static final int MSG_RESET_PRE_IDLE_TIMEOUT_FACTOR = 12;

    final class MyHandler extends Handler {
        MyHandler(Looper looper) {
            super(looper);
        }

        @Override public void handleMessage(Message msg) {
            if (DEBUG) Slog.d(TAG, "handleMessage(" + msg.what + ")");
            switch (msg.what) {
                case MSG_WRITE_CONFIG: {
                    // Does not hold a wakelock. Just let this happen whenever.
                    handleWriteConfigFile();
                } break;
                case MSG_REPORT_IDLE_ON:
                case MSG_REPORT_IDLE_ON_LIGHT: {
                    // mGoingIdleWakeLock is held at this point
                    EventLogTags.writeDeviceIdleOnStart();
                    final boolean deepChanged;
                    final boolean lightChanged;
                    if (msg.what == MSG_REPORT_IDLE_ON) {
                        deepChanged = mLocalPowerManager.setDeviceIdleMode(true);
                        lightChanged = mLocalPowerManager.setLightDeviceIdleMode(false);
                    } else {
                        deepChanged = mLocalPowerManager.setDeviceIdleMode(false);
                        lightChanged = mLocalPowerManager.setLightDeviceIdleMode(true);
                    }
                    try {
                        mNetworkPolicyManager.setDeviceIdleMode(true);
                        mBatteryStats.noteDeviceIdleMode(msg.what == MSG_REPORT_IDLE_ON
                                ? BatteryStats.DEVICE_IDLE_MODE_DEEP
                                : BatteryStats.DEVICE_IDLE_MODE_LIGHT, null, Process.myUid());
                    } catch (RemoteException e) {
                    }
                    if (deepChanged) {
                        getContext().sendBroadcastAsUser(mIdleIntent, UserHandle.ALL);
                    }
                    if (lightChanged) {
                        getContext().sendBroadcastAsUser(mLightIdleIntent, UserHandle.ALL);
                    }
                    EventLogTags.writeDeviceIdleOnComplete();
                    mGoingIdleWakeLock.release();
                } break;
                case MSG_REPORT_IDLE_OFF: {
                    // mActiveIdleWakeLock is held at this point
                    EventLogTags.writeDeviceIdleOffStart("unknown");
                    final boolean deepChanged = mLocalPowerManager.setDeviceIdleMode(false);
                    final boolean lightChanged = mLocalPowerManager.setLightDeviceIdleMode(false);
                    try {
                        mNetworkPolicyManager.setDeviceIdleMode(false);
                        mBatteryStats.noteDeviceIdleMode(BatteryStats.DEVICE_IDLE_MODE_OFF,
                                null, Process.myUid());
                    } catch (RemoteException e) {
                    }
                    if (deepChanged) {
                        incActiveIdleOps();
                        getContext().sendOrderedBroadcastAsUser(mIdleIntent, UserHandle.ALL,
                                null, mIdleStartedDoneReceiver, null, 0, null, null);
                    }
                    if (lightChanged) {
                        incActiveIdleOps();
                        getContext().sendOrderedBroadcastAsUser(mLightIdleIntent, UserHandle.ALL,
                                null, mIdleStartedDoneReceiver, null, 0, null, null);
                    }
                    // Always start with one active op for the message being sent here.
                    // Now we are done!
                    decActiveIdleOps();
                    EventLogTags.writeDeviceIdleOffComplete();
                } break;
                case MSG_REPORT_ACTIVE: {
                    // The device is awake at this point, so no wakelock necessary.
                    String activeReason = (String)msg.obj;
                    int activeUid = msg.arg1;
                    EventLogTags.writeDeviceIdleOffStart(
                            activeReason != null ? activeReason : "unknown");
                    final boolean deepChanged = mLocalPowerManager.setDeviceIdleMode(false);
                    final boolean lightChanged = mLocalPowerManager.setLightDeviceIdleMode(false);
                    try {
                        mNetworkPolicyManager.setDeviceIdleMode(false);
                        mBatteryStats.noteDeviceIdleMode(BatteryStats.DEVICE_IDLE_MODE_OFF,
                                activeReason, activeUid);
                    } catch (RemoteException e) {
                    }
                    if (deepChanged) {
                        getContext().sendBroadcastAsUser(mIdleIntent, UserHandle.ALL);
                    }
                    if (lightChanged) {
                        getContext().sendBroadcastAsUser(mLightIdleIntent, UserHandle.ALL);
                    }
                    EventLogTags.writeDeviceIdleOffComplete();
                } break;
                case MSG_TEMP_APP_WHITELIST_TIMEOUT: {
                    // TODO: What is keeping the device awake at this point? Does it need to be?
                    int appId = msg.arg1;
                    checkTempAppWhitelistTimeout(appId);
                } break;
                case MSG_FINISH_IDLE_OP: {
                    // mActiveIdleWakeLock is held at this point
                    decActiveIdleOps();
                } break;
                case MSG_REPORT_TEMP_APP_WHITELIST_CHANGED: {
                    final int appId = msg.arg1;
                    final boolean added = (msg.arg2 == 1);
                    mNetworkPolicyManagerInternal.onTempPowerSaveWhitelistChange(appId, added);
                } break;
                case MSG_SEND_CONSTRAINT_MONITORING: {
                    final IDeviceIdleConstraint constraint = (IDeviceIdleConstraint) msg.obj;
                    final boolean monitoring = (msg.arg1 == 1);
                    if (monitoring) {
                        constraint.startMonitoring();
                    } else {
                        constraint.stopMonitoring();
                    }
                } break;
                case MSG_UPDATE_PRE_IDLE_TIMEOUT_FACTOR: {
                    updatePreIdleFactor();
                } break;
                case MSG_RESET_PRE_IDLE_TIMEOUT_FACTOR: {
                    updatePreIdleFactor();
                    maybeDoImmediateMaintenance();
                } break;
                case MSG_REPORT_STATIONARY_STATUS: {
                    final DeviceIdleInternal.StationaryListener newListener =
                            (DeviceIdleInternal.StationaryListener) msg.obj;
                    final DeviceIdleInternal.StationaryListener[] listeners;
                    final boolean isStationary;
                    synchronized (DeviceIdleController.this) {
                        isStationary = isStationaryLocked();
                        if (newListener == null) {
                            // Only notify all listeners if we aren't directing to one listener.
                            listeners = mStationaryListeners.toArray(
                                    new DeviceIdleInternal.StationaryListener[
                                            mStationaryListeners.size()]);
                        } else {
                            listeners = null;
                        }
                    }
                    if (listeners != null) {
                        for (DeviceIdleInternal.StationaryListener listener : listeners) {
                            listener.onDeviceStationaryChanged(isStationary);
                        }
                    }
                    if (newListener != null) {
                        newListener.onDeviceStationaryChanged(isStationary);
                    }
                }
                break;
            }
        }
    }

    final MyHandler mHandler;

    BinderService mBinderService;

    private final class BinderService extends IDeviceIdleController.Stub {
        @Override public void addPowerSaveWhitelistApp(String name) {
            if (DEBUG) {
                Slog.i(TAG, "addPowerSaveWhitelistApp(name = " + name + ")");
            }
            addPowerSaveWhitelistApps(Collections.singletonList(name));
        }

        @Override
        public int addPowerSaveWhitelistApps(List<String> packageNames) {
            if (DEBUG) {
                Slog.i(TAG,
                        "addPowerSaveWhitelistApps(name = " + packageNames + ")");
            }
            getContext().enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER,
                    null);
            long ident = Binder.clearCallingIdentity();
            try {
                return addPowerSaveWhitelistAppsInternal(packageNames);
            } finally {
                Binder.restoreCallingIdentity(ident);
            }
        }

        @Override public void removePowerSaveWhitelistApp(String name) {
            if (DEBUG) {
                Slog.i(TAG, "removePowerSaveWhitelistApp(name = " + name + ")");
            }
            getContext().enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER,
                    null);
            long ident = Binder.clearCallingIdentity();
            try {
                removePowerSaveWhitelistAppInternal(name);
            } finally {
                Binder.restoreCallingIdentity(ident);
            }
        }

        @Override public void removeSystemPowerWhitelistApp(String name) {
            if (DEBUG) {
                Slog.d(TAG, "removeAppFromSystemWhitelist(name = " + name + ")");
            }
            getContext().enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER,
                    null);
            long ident = Binder.clearCallingIdentity();
            try {
                removeSystemPowerWhitelistAppInternal(name);
            } finally {
                Binder.restoreCallingIdentity(ident);
            }
        }

        @Override public void restoreSystemPowerWhitelistApp(String name) {
            if (DEBUG) {
                Slog.d(TAG, "restoreAppToSystemWhitelist(name = " + name + ")");
            }
            getContext().enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER,
                    null);
            long ident = Binder.clearCallingIdentity();
            try {
                restoreSystemPowerWhitelistAppInternal(name);
            } finally {
                Binder.restoreCallingIdentity(ident);
            }
        }

        public String[] getRemovedSystemPowerWhitelistApps() {
            return getRemovedSystemPowerWhitelistAppsInternal();
        }

        @Override public String[] getSystemPowerWhitelistExceptIdle() {
            return getSystemPowerWhitelistExceptIdleInternal();
        }

        @Override public String[] getSystemPowerWhitelist() {
            return getSystemPowerWhitelistInternal();
        }

        @Override public String[] getUserPowerWhitelist() {
            return getUserPowerWhitelistInternal();
        }

        @Override public String[] getFullPowerWhitelistExceptIdle() {
            return getFullPowerWhitelistExceptIdleInternal();
        }

        @Override public String[] getFullPowerWhitelist() {
            return getFullPowerWhitelistInternal();
        }

        @Override public int[] getAppIdWhitelistExceptIdle() {
            return getAppIdWhitelistExceptIdleInternal();
        }

        @Override public int[] getAppIdWhitelist() {
            return getAppIdWhitelistInternal();
        }

        @Override public int[] getAppIdUserWhitelist() {
            return getAppIdUserWhitelistInternal();
        }

        @Override public int[] getAppIdTempWhitelist() {
            return getAppIdTempWhitelistInternal();
        }

        @Override public boolean isPowerSaveWhitelistExceptIdleApp(String name) {
            return isPowerSaveWhitelistExceptIdleAppInternal(name);
        }

        @Override public boolean isPowerSaveWhitelistApp(String name) {
            return isPowerSaveWhitelistAppInternal(name);
        }

        @Override
        public long whitelistAppTemporarily(String packageName, int userId, String reason)
                throws RemoteException {
            // At least 10 seconds.
            long duration = Math.max(10_000L, mConstants.MAX_TEMP_APP_WHITELIST_DURATION / 2);
            addPowerSaveTempWhitelistAppChecked(packageName, duration, userId, reason);
            return duration;
        }

        @Override
        public void addPowerSaveTempWhitelistApp(String packageName, long duration,
                int userId, String reason) throws RemoteException {
            addPowerSaveTempWhitelistAppChecked(packageName, duration, userId, reason);
        }

        @Override public long addPowerSaveTempWhitelistAppForMms(String packageName,
                int userId, String reason) throws RemoteException {
            long duration = mConstants.MMS_TEMP_APP_WHITELIST_DURATION;
            addPowerSaveTempWhitelistAppChecked(packageName, duration, userId, reason);
            return duration;
        }

        @Override public long addPowerSaveTempWhitelistAppForSms(String packageName,
                int userId, String reason) throws RemoteException {
            long duration = mConstants.SMS_TEMP_APP_WHITELIST_DURATION;
            addPowerSaveTempWhitelistAppChecked(packageName, duration, userId, reason);
            return duration;
        }

        @Override public void exitIdle(String reason) {
            getContext().enforceCallingOrSelfPermission(Manifest.permission.DEVICE_POWER,
                    null);
            long ident = Binder.clearCallingIdentity();
            try {
                exitIdleInternal(reason);
            } finally {
                Binder.restoreCallingIdentity(ident);
            }
        }

        @Override public int setPreIdleTimeoutMode(int mode) {
            getContext().enforceCallingOrSelfPermission(Manifest.permission.DEVICE_POWER,
                    null);
            long ident = Binder.clearCallingIdentity();
            try {
                return DeviceIdleController.this.setPreIdleTimeoutMode(mode);
            } finally {
                Binder.restoreCallingIdentity(ident);
            }
        }

        @Override public void resetPreIdleTimeoutMode() {
            getContext().enforceCallingOrSelfPermission(Manifest.permission.DEVICE_POWER,
                    null);
            long ident = Binder.clearCallingIdentity();
            try {
                DeviceIdleController.this.resetPreIdleTimeoutMode();
            } finally {
                Binder.restoreCallingIdentity(ident);
            }
        }

        @Override protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
            DeviceIdleController.this.dump(fd, pw, args);
        }

        @Override public void onShellCommand(FileDescriptor in, FileDescriptor out,
                FileDescriptor err, String[] args, ShellCallback callback, ResultReceiver resultReceiver) {
            (new Shell()).exec(this, in, out, err, args, callback, resultReceiver);
        }
    }

    private class LocalService implements DeviceIdleInternal {
        @Override
        public void onConstraintStateChanged(IDeviceIdleConstraint constraint, boolean active) {
            synchronized (DeviceIdleController.this) {
                onConstraintStateChangedLocked(constraint, active);
            }
        }

        @Override
        public void registerDeviceIdleConstraint(IDeviceIdleConstraint constraint, String name,
                @IDeviceIdleConstraint.MinimumState int minState) {
            registerDeviceIdleConstraintInternal(constraint, name, minState);
        }

        @Override
        public void unregisterDeviceIdleConstraint(IDeviceIdleConstraint constraint) {
            unregisterDeviceIdleConstraintInternal(constraint);
        }

        @Override
        public void exitIdle(String reason) {
            exitIdleInternal(reason);
        }

        // duration in milliseconds
        @Override
        public void addPowerSaveTempWhitelistApp(int callingUid, String packageName,
                long duration, int userId, boolean sync, String reason) {
            addPowerSaveTempWhitelistAppInternal(callingUid, packageName, duration,
                    userId, sync, reason);
        }

        // duration in milliseconds
        @Override
        public void addPowerSaveTempWhitelistAppDirect(int uid, long duration, boolean sync,
                String reason) {
            addPowerSaveTempWhitelistAppDirectInternal(0, uid, duration, sync, reason);
        }

        // duration in milliseconds
        @Override
        public long getNotificationWhitelistDuration() {
            return mConstants.NOTIFICATION_WHITELIST_DURATION;
        }

        @Override
        public void setJobsActive(boolean active) {
            DeviceIdleController.this.setJobsActive(active);
        }

        // Up-call from alarm manager.
        @Override
        public void setAlarmsActive(boolean active) {
            DeviceIdleController.this.setAlarmsActive(active);
        }

        /** Is the app on any of the power save whitelists, whether system or user? */
        @Override
        public boolean isAppOnWhitelist(int appid) {
            return DeviceIdleController.this.isAppOnWhitelistInternal(appid);
        }

        /**
         * Returns the array of app ids whitelisted by user. Take care not to
         * modify this, as it is a reference to the original copy. But the reference
         * can change when the list changes, so it needs to be re-acquired when
         * {@link PowerManager#ACTION_POWER_SAVE_WHITELIST_CHANGED} is sent.
         */
        @Override
        public int[] getPowerSaveWhitelistUserAppIds() {
            return DeviceIdleController.this.getPowerSaveWhitelistUserAppIds();
        }

        @Override
        public int[] getPowerSaveTempWhitelistAppIds() {
            return DeviceIdleController.this.getAppIdTempWhitelistInternal();
        }

        @Override
        public void registerStationaryListener(StationaryListener listener) {
            DeviceIdleController.this.registerStationaryListener(listener);
        }

        @Override
        public void unregisterStationaryListener(StationaryListener listener) {
            DeviceIdleController.this.unregisterStationaryListener(listener);
        }
    }

    static class Injector {
        private final Context mContext;
        private ConnectivityManager mConnectivityManager;
        private Constants mConstants;
        private LocationManager mLocationManager;

        Injector(Context ctx) {
            mContext = ctx;
        }

        AlarmManager getAlarmManager() {
            return mContext.getSystemService(AlarmManager.class);
        }

        AnyMotionDetector getAnyMotionDetector(Handler handler, SensorManager sm,
                AnyMotionDetector.DeviceIdleCallback callback, float angleThreshold) {
            return new AnyMotionDetector(getPowerManager(), handler, sm, callback, angleThreshold);
        }

        AppStateTracker getAppStateTracker(Context ctx, Looper looper) {
            return new AppStateTracker(ctx, looper);
        }

        ConnectivityManager getConnectivityManager() {
            if (mConnectivityManager == null) {
                mConnectivityManager = mContext.getSystemService(ConnectivityManager.class);
            }
            return mConnectivityManager;
        }

        Constants getConstants(DeviceIdleController controller, Handler handler,
                ContentResolver resolver) {
            if (mConstants == null) {
                mConstants = controller.new Constants(handler, resolver);
            }
            return mConstants;
        }


        /** Returns the current elapsed realtime in milliseconds. */
        long getElapsedRealtime() {
            return SystemClock.elapsedRealtime();
        }

        LocationManager getLocationManager() {
            if (mLocationManager == null) {
                mLocationManager = mContext.getSystemService(LocationManager.class);
            }
            return mLocationManager;
        }

        MyHandler getHandler(DeviceIdleController controller) {
            return controller.new MyHandler(BackgroundThread.getHandler().getLooper());
        }

        Sensor getMotionSensor() {
            final SensorManager sensorManager = getSensorManager();
            Sensor motionSensor = null;
            int sigMotionSensorId = mContext.getResources().getInteger(
                    com.android.internal.R.integer.config_autoPowerModeAnyMotionSensor);
            if (sigMotionSensorId > 0) {
                motionSensor = sensorManager.getDefaultSensor(sigMotionSensorId, true);
            }
            if (motionSensor == null && mContext.getResources().getBoolean(
                    com.android.internal.R.bool.config_autoPowerModePreferWristTilt)) {
                motionSensor = sensorManager.getDefaultSensor(
                        Sensor.TYPE_WRIST_TILT_GESTURE, true);
            }
            if (motionSensor == null) {
                // As a last ditch, fall back to SMD.
                motionSensor = sensorManager.getDefaultSensor(
                        Sensor.TYPE_SIGNIFICANT_MOTION, true);
            }
            return motionSensor;
        }

        PowerManager getPowerManager() {
            return mContext.getSystemService(PowerManager.class);
        }

        SensorManager getSensorManager() {
            return mContext.getSystemService(SensorManager.class);
        }

        ConstraintController getConstraintController(Handler handler,
                DeviceIdleInternal localService) {
            if (mContext.getPackageManager()
                    .hasSystemFeature(PackageManager.FEATURE_LEANBACK_ONLY)) {
                return new TvConstraintController(mContext, handler);
            }
            return null;
        }

        boolean useMotionSensor() {
            return mContext.getResources().getBoolean(
                   com.android.internal.R.bool.config_autoPowerModeUseMotionSensor);
        }
    }

    private final Injector mInjector;

    private ActivityTaskManagerInternal.ScreenObserver mScreenObserver =
            new ActivityTaskManagerInternal.ScreenObserver() {
                @Override
                public void onAwakeStateChanged(boolean isAwake) { }

                @Override
                public void onKeyguardStateChanged(boolean isShowing) {
                    synchronized (DeviceIdleController.this) {
                        DeviceIdleController.this.keyguardShowingLocked(isShowing);
                    }
                }
            };

    @VisibleForTesting DeviceIdleController(Context context, Injector injector) {
        super(context);
        mInjector = injector;
        mConfigFile = new AtomicFile(new File(getSystemDir(), "deviceidle.xml"));
        mHandler = mInjector.getHandler(this);
        mAppStateTracker = mInjector.getAppStateTracker(context, FgThread.get().getLooper());
        LocalServices.addService(AppStateTracker.class, mAppStateTracker);
        mUseMotionSensor = mInjector.useMotionSensor();
    }

    public DeviceIdleController(Context context) {
        this(context, new Injector(context));
    }

    boolean isAppOnWhitelistInternal(int appid) {
        synchronized (this) {
            return Arrays.binarySearch(mPowerSaveWhitelistAllAppIdArray, appid) >= 0;
        }
    }

    int[] getPowerSaveWhitelistUserAppIds() {
        synchronized (this) {
            return mPowerSaveWhitelistUserAppIdArray;
        }
    }

    private static File getSystemDir() {
        return new File(Environment.getDataDirectory(), "system");
    }

    @Override
    public void onStart() {
        final PackageManager pm = getContext().getPackageManager();

        synchronized (this) {
            mLightEnabled = mDeepEnabled = getContext().getResources().getBoolean(
                    com.android.internal.R.bool.config_enableAutoPowerModes);
            SystemConfig sysConfig = SystemConfig.getInstance();
            ArraySet<String> allowPowerExceptIdle = sysConfig.getAllowInPowerSaveExceptIdle();
            for (int i=0; i<allowPowerExceptIdle.size(); i++) {
                String pkg = allowPowerExceptIdle.valueAt(i);
                try {
                    ApplicationInfo ai = pm.getApplicationInfo(pkg,
                            PackageManager.MATCH_SYSTEM_ONLY);
                    int appid = UserHandle.getAppId(ai.uid);
                    mPowerSaveWhitelistAppsExceptIdle.put(ai.packageName, appid);
                    mPowerSaveWhitelistSystemAppIdsExceptIdle.put(appid, true);
                } catch (PackageManager.NameNotFoundException e) {
                }
            }
            ArraySet<String> allowPower = sysConfig.getAllowInPowerSave();
            for (int i=0; i<allowPower.size(); i++) {
                String pkg = allowPower.valueAt(i);
                try {
                    ApplicationInfo ai = pm.getApplicationInfo(pkg,
                            PackageManager.MATCH_SYSTEM_ONLY);
                    int appid = UserHandle.getAppId(ai.uid);
                    // These apps are on both the whitelist-except-idle as well
                    // as the full whitelist, so they apply in all cases.
                    mPowerSaveWhitelistAppsExceptIdle.put(ai.packageName, appid);
                    mPowerSaveWhitelistSystemAppIdsExceptIdle.put(appid, true);
                    mPowerSaveWhitelistApps.put(ai.packageName, appid);
                    mPowerSaveWhitelistSystemAppIds.put(appid, true);
                } catch (PackageManager.NameNotFoundException e) {
                }
            }

            mConstants = mInjector.getConstants(this, mHandler, getContext().getContentResolver());

            readConfigFileLocked();
            updateWhitelistAppIdsLocked();

            mNetworkConnected = true;
            mScreenOn = true;
            mScreenLocked = false;
            // Start out assuming we are charging.  If we aren't, we will at least get
            // a battery update the next time the level drops.
            mCharging = true;
            mActiveReason = ACTIVE_REASON_UNKNOWN;
            mState = STATE_ACTIVE;
            mLightState = LIGHT_STATE_ACTIVE;
            mInactiveTimeout = mConstants.INACTIVE_TIMEOUT;
            mPreIdleFactor = 1.0f;
            mLastPreIdleFactor = 1.0f;
        }

        mBinderService = new BinderService();
        publishBinderService(Context.DEVICE_IDLE_CONTROLLER, mBinderService);
        mLocalService = new LocalService();
        publishLocalService(DeviceIdleInternal.class, mLocalService);
    }

    @Override
    public void onBootPhase(int phase) {
        if (phase == PHASE_SYSTEM_SERVICES_READY) {
            synchronized (this) {
                mAlarmManager = mInjector.getAlarmManager();
                mLocalAlarmManager = getLocalService(AlarmManagerInternal.class);
                mBatteryStats = BatteryStatsService.getService();
                mLocalActivityManager = getLocalService(ActivityManagerInternal.class);
                mLocalActivityTaskManager = getLocalService(ActivityTaskManagerInternal.class);
                mLocalPowerManager = getLocalService(PowerManagerInternal.class);
                mPowerManager = mInjector.getPowerManager();
                mActiveIdleWakeLock = mPowerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
                        "deviceidle_maint");
                mActiveIdleWakeLock.setReferenceCounted(false);
                mGoingIdleWakeLock = mPowerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
                        "deviceidle_going_idle");
                mGoingIdleWakeLock.setReferenceCounted(true);
                mNetworkPolicyManager = INetworkPolicyManager.Stub.asInterface(
                        ServiceManager.getService(Context.NETWORK_POLICY_SERVICE));
                mNetworkPolicyManagerInternal = getLocalService(NetworkPolicyManagerInternal.class);
                mSensorManager = mInjector.getSensorManager();

                if (mUseMotionSensor) {
                    mMotionSensor = mInjector.getMotionSensor();
                }

                if (getContext().getResources().getBoolean(
                        com.android.internal.R.bool.config_autoPowerModePrefetchLocation)) {
                    mLocationRequest = LocationRequest.create()
                        .setQuality(LocationRequest.ACCURACY_FINE)
                        .setInterval(0)
                        .setFastestInterval(0)
                        .setNumUpdates(1);
                }

                mConstraintController = mInjector.getConstraintController(
                        mHandler, getLocalService(LocalService.class));
                if (mConstraintController != null) {
                    mConstraintController.start();
                }

                float angleThreshold = getContext().getResources().getInteger(
                        com.android.internal.R.integer.config_autoPowerModeThresholdAngle) / 100f;
                mAnyMotionDetector = mInjector.getAnyMotionDetector(mHandler, mSensorManager, this,
                        angleThreshold);

                mAppStateTracker.onSystemServicesReady();

                mIdleIntent = new Intent(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED);
                mIdleIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY
                        | Intent.FLAG_RECEIVER_FOREGROUND);
                mLightIdleIntent = new Intent(PowerManager.ACTION_LIGHT_DEVICE_IDLE_MODE_CHANGED);
                mLightIdleIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY
                        | Intent.FLAG_RECEIVER_FOREGROUND);

                IntentFilter filter = new IntentFilter();
                filter.addAction(Intent.ACTION_BATTERY_CHANGED);
                getContext().registerReceiver(mReceiver, filter);

                filter = new IntentFilter();
                filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
                filter.addDataScheme("package");
                getContext().registerReceiver(mReceiver, filter);

                filter = new IntentFilter();
                filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
                getContext().registerReceiver(mReceiver, filter);

                filter = new IntentFilter();
                filter.addAction(Intent.ACTION_SCREEN_OFF);
                filter.addAction(Intent.ACTION_SCREEN_ON);
                getContext().registerReceiver(mInteractivityReceiver, filter);

                mLocalActivityManager.setDeviceIdleWhitelist(
                        mPowerSaveWhitelistAllAppIdArray, mPowerSaveWhitelistExceptIdleAppIdArray);
                mLocalPowerManager.setDeviceIdleWhitelist(mPowerSaveWhitelistAllAppIdArray);

                mLocalPowerManager.registerLowPowerModeObserver(ServiceType.QUICK_DOZE,
                        state -> {
                            synchronized (DeviceIdleController.this) {
                                updateQuickDozeFlagLocked(state.batterySaverEnabled);
                            }
                        });
                updateQuickDozeFlagLocked(
                        mLocalPowerManager.getLowPowerState(
                                ServiceType.QUICK_DOZE).batterySaverEnabled);

                mLocalActivityTaskManager.registerScreenObserver(mScreenObserver);

                passWhiteListsToForceAppStandbyTrackerLocked();
                updateInteractivityLocked();
            }
            updateConnectivityState(null);
        }
    }

    @VisibleForTesting
    boolean hasMotionSensor() {
        return mUseMotionSensor && mMotionSensor != null;
    }

    private void registerDeviceIdleConstraintInternal(IDeviceIdleConstraint constraint,
            final String name, final int type) {
        final int minState;
        switch (type) {
            case IDeviceIdleConstraint.ACTIVE:
                minState = STATE_ACTIVE;
                break;
            case IDeviceIdleConstraint.SENSING_OR_ABOVE:
                minState = STATE_SENSING;
                break;
            default:
                Slog.wtf(TAG, "Registering device-idle constraint with invalid type: " + type);
                return;
        }
        synchronized (this) {
            if (mConstraints.containsKey(constraint)) {
                Slog.e(TAG, "Re-registering device-idle constraint: " + constraint + ".");
                return;
            }
            DeviceIdleConstraintTracker tracker = new DeviceIdleConstraintTracker(name, minState);
            mConstraints.put(constraint, tracker);
            updateActiveConstraintsLocked();
        }
    }

    private void unregisterDeviceIdleConstraintInternal(IDeviceIdleConstraint constraint) {
        synchronized (this) {
            // Artificially force the constraint to inactive to unblock anything waiting for it.
            onConstraintStateChangedLocked(constraint, /* active= */ false);

            // Let the constraint know that we are not listening to it any more.
            setConstraintMonitoringLocked(constraint, /* monitoring= */ false);
            mConstraints.remove(constraint);
        }
    }

    @GuardedBy("this")
    private void onConstraintStateChangedLocked(IDeviceIdleConstraint constraint, boolean active) {
        DeviceIdleConstraintTracker tracker = mConstraints.get(constraint);
        if (tracker == null) {
            Slog.e(TAG, "device-idle constraint " + constraint + " has not been registered.");
            return;
        }
        if (active != tracker.active && tracker.monitoring) {
            tracker.active = active;
            mNumBlockingConstraints += (tracker.active ? +1 : -1);
            if (mNumBlockingConstraints == 0) {
                if (mState == STATE_ACTIVE) {
                    becomeInactiveIfAppropriateLocked();
                } else if (mNextAlarmTime == 0 || mNextAlarmTime < SystemClock.elapsedRealtime()) {
                    stepIdleStateLocked("s:" + tracker.name);
                }
            }
        }
    }

    @GuardedBy("this")
    private void setConstraintMonitoringLocked(IDeviceIdleConstraint constraint, boolean monitor) {
        DeviceIdleConstraintTracker tracker = mConstraints.get(constraint);
        if (tracker.monitoring != monitor) {
            tracker.monitoring = monitor;
            updateActiveConstraintsLocked();
            // We send the callback on a separate thread instead of just relying on oneway as
            // the client could be in the system server with us and cause re-entry problems.
            mHandler.obtainMessage(MSG_SEND_CONSTRAINT_MONITORING,
                    /* monitoring= */ monitor ? 1 : 0,
                    /* <not used>= */ -1,
                    /* constraint= */ constraint).sendToTarget();
        }
    }

    @GuardedBy("this")
    private void updateActiveConstraintsLocked() {
        mNumBlockingConstraints = 0;
        for (int i = 0; i < mConstraints.size(); i++) {
            final IDeviceIdleConstraint constraint = mConstraints.keyAt(i);
            final DeviceIdleConstraintTracker tracker = mConstraints.valueAt(i);
            final boolean monitoring = (tracker.minState == mState);
            if (monitoring != tracker.monitoring) {
                setConstraintMonitoringLocked(constraint, monitoring);
                tracker.active = monitoring;
            }
            if (tracker.monitoring && tracker.active) {
                mNumBlockingConstraints++;
            }
        }
    }

    private int addPowerSaveWhitelistAppsInternal(List<String> pkgNames) {
        int numAdded = 0;
        int numErrors = 0;
        synchronized (this) {
            for (int i = pkgNames.size() - 1; i >= 0; --i) {
                final String name = pkgNames.get(i);
                if (name == null) {
                    numErrors++;
                    continue;
                }
                try {
                    ApplicationInfo ai = getContext().getPackageManager().getApplicationInfo(name,
                            PackageManager.MATCH_ANY_USER);
                    if (mPowerSaveWhitelistUserApps.put(name, UserHandle.getAppId(ai.uid))
                            == null) {
                        numAdded++;
                    }
                } catch (PackageManager.NameNotFoundException e) {
                    Slog.e(TAG, "Tried to add unknown package to power save whitelist: " + name);
                    numErrors++;
                }
            }
            if (numAdded > 0) {
                reportPowerSaveWhitelistChangedLocked();
                updateWhitelistAppIdsLocked();
                writeConfigFileLocked();
            }
        }
        return pkgNames.size() - numErrors;
    }

    public boolean removePowerSaveWhitelistAppInternal(String name) {
        synchronized (this) {
            if (mPowerSaveWhitelistUserApps.remove(name) != null) {
                reportPowerSaveWhitelistChangedLocked();
                updateWhitelistAppIdsLocked();
                writeConfigFileLocked();
                return true;
            }
        }
        return false;
    }

    public boolean getPowerSaveWhitelistAppInternal(String name) {
        synchronized (this) {
            return mPowerSaveWhitelistUserApps.containsKey(name);
        }
    }

    void resetSystemPowerWhitelistInternal() {
        synchronized (this) {
            mPowerSaveWhitelistApps.putAll(mRemovedFromSystemWhitelistApps);
            mRemovedFromSystemWhitelistApps.clear();
            reportPowerSaveWhitelistChangedLocked();
            updateWhitelistAppIdsLocked();
            writeConfigFileLocked();
        }
    }

    public boolean restoreSystemPowerWhitelistAppInternal(String name) {
        synchronized (this) {
            if (!mRemovedFromSystemWhitelistApps.containsKey(name)) {
                return false;
            }
            mPowerSaveWhitelistApps.put(name, mRemovedFromSystemWhitelistApps.remove(name));
            reportPowerSaveWhitelistChangedLocked();
            updateWhitelistAppIdsLocked();
            writeConfigFileLocked();
            return true;
        }
    }

    public boolean removeSystemPowerWhitelistAppInternal(String name) {
        synchronized (this) {
            if (!mPowerSaveWhitelistApps.containsKey(name)) {
                return false;
            }
            mRemovedFromSystemWhitelistApps.put(name, mPowerSaveWhitelistApps.remove(name));
            reportPowerSaveWhitelistChangedLocked();
            updateWhitelistAppIdsLocked();
            writeConfigFileLocked();
            return true;
        }
    }

    public boolean addPowerSaveWhitelistExceptIdleInternal(String name) {
        synchronized (this) {
            try {
                final ApplicationInfo ai = getContext().getPackageManager().getApplicationInfo(name,
                        PackageManager.MATCH_ANY_USER);
                if (mPowerSaveWhitelistAppsExceptIdle.put(name, UserHandle.getAppId(ai.uid))
                        == null) {
                    mPowerSaveWhitelistUserAppsExceptIdle.add(name);
                    reportPowerSaveWhitelistChangedLocked();
                    mPowerSaveWhitelistExceptIdleAppIdArray = buildAppIdArray(
                            mPowerSaveWhitelistAppsExceptIdle, mPowerSaveWhitelistUserApps,
                            mPowerSaveWhitelistExceptIdleAppIds);

                    passWhiteListsToForceAppStandbyTrackerLocked();
                }
                return true;
            } catch (PackageManager.NameNotFoundException e) {
                return false;
            }
        }
    }

    public void resetPowerSaveWhitelistExceptIdleInternal() {
        synchronized (this) {
            if (mPowerSaveWhitelistAppsExceptIdle.removeAll(
                    mPowerSaveWhitelistUserAppsExceptIdle)) {
                reportPowerSaveWhitelistChangedLocked();
                mPowerSaveWhitelistExceptIdleAppIdArray = buildAppIdArray(
                        mPowerSaveWhitelistAppsExceptIdle, mPowerSaveWhitelistUserApps,
                        mPowerSaveWhitelistExceptIdleAppIds);
                mPowerSaveWhitelistUserAppsExceptIdle.clear();

                passWhiteListsToForceAppStandbyTrackerLocked();
            }
        }
    }

    public boolean getPowerSaveWhitelistExceptIdleInternal(String name) {
        synchronized (this) {
            return mPowerSaveWhitelistAppsExceptIdle.containsKey(name);
        }
    }

    public String[] getSystemPowerWhitelistExceptIdleInternal() {
        synchronized (this) {
            int size = mPowerSaveWhitelistAppsExceptIdle.size();
            String[] apps = new String[size];
            for (int i = 0; i < size; i++) {
                apps[i] = mPowerSaveWhitelistAppsExceptIdle.keyAt(i);
            }
            return apps;
        }
    }

    public String[] getSystemPowerWhitelistInternal() {
        synchronized (this) {
            int size = mPowerSaveWhitelistApps.size();
            String[] apps = new String[size];
            for (int i = 0; i < size; i++) {
                apps[i] = mPowerSaveWhitelistApps.keyAt(i);
            }
            return apps;
        }
    }

    public String[] getRemovedSystemPowerWhitelistAppsInternal() {
        synchronized (this) {
            int size = mRemovedFromSystemWhitelistApps.size();
            final String[] apps = new String[size];
            for (int i = 0; i < size; i++) {
                apps[i] = mRemovedFromSystemWhitelistApps.keyAt(i);
            }
            return apps;
        }
    }

    public String[] getUserPowerWhitelistInternal() {
        synchronized (this) {
            int size = mPowerSaveWhitelistUserApps.size();
            String[] apps = new String[size];
            for (int i = 0; i < mPowerSaveWhitelistUserApps.size(); i++) {
                apps[i] = mPowerSaveWhitelistUserApps.keyAt(i);
            }
            return apps;
        }
    }

    public String[] getFullPowerWhitelistExceptIdleInternal() {
        synchronized (this) {
            int size = mPowerSaveWhitelistAppsExceptIdle.size() + mPowerSaveWhitelistUserApps.size();
            String[] apps = new String[size];
            int cur = 0;
            for (int i = 0; i < mPowerSaveWhitelistAppsExceptIdle.size(); i++) {
                apps[cur] = mPowerSaveWhitelistAppsExceptIdle.keyAt(i);
                cur++;
            }
            for (int i = 0; i < mPowerSaveWhitelistUserApps.size(); i++) {
                apps[cur] = mPowerSaveWhitelistUserApps.keyAt(i);
                cur++;
            }
            return apps;
        }
    }

    public String[] getFullPowerWhitelistInternal() {
        synchronized (this) {
            int size = mPowerSaveWhitelistApps.size() + mPowerSaveWhitelistUserApps.size();
            String[] apps = new String[size];
            int cur = 0;
            for (int i = 0; i < mPowerSaveWhitelistApps.size(); i++) {
                apps[cur] = mPowerSaveWhitelistApps.keyAt(i);
                cur++;
            }
            for (int i = 0; i < mPowerSaveWhitelistUserApps.size(); i++) {
                apps[cur] = mPowerSaveWhitelistUserApps.keyAt(i);
                cur++;
            }
            return apps;
        }
    }

    public boolean isPowerSaveWhitelistExceptIdleAppInternal(String packageName) {
        synchronized (this) {
            return mPowerSaveWhitelistAppsExceptIdle.containsKey(packageName)
                    || mPowerSaveWhitelistUserApps.containsKey(packageName);
        }
    }

    public boolean isPowerSaveWhitelistAppInternal(String packageName) {
        synchronized (this) {
            return mPowerSaveWhitelistApps.containsKey(packageName)
                    || mPowerSaveWhitelistUserApps.containsKey(packageName);
        }
    }

    public int[] getAppIdWhitelistExceptIdleInternal() {
        synchronized (this) {
            return mPowerSaveWhitelistExceptIdleAppIdArray;
        }
    }

    public int[] getAppIdWhitelistInternal() {
        synchronized (this) {
            return mPowerSaveWhitelistAllAppIdArray;
        }
    }

    public int[] getAppIdUserWhitelistInternal() {
        synchronized (this) {
            return mPowerSaveWhitelistUserAppIdArray;
        }
    }

    public int[] getAppIdTempWhitelistInternal() {
        synchronized (this) {
            return mTempWhitelistAppIdArray;
        }
    }

    void addPowerSaveTempWhitelistAppChecked(String packageName, long duration,
            int userId, String reason) throws RemoteException {
        getContext().enforceCallingPermission(
                Manifest.permission.CHANGE_DEVICE_IDLE_TEMP_WHITELIST,
                "No permission to change device idle whitelist");
        final int callingUid = Binder.getCallingUid();
        userId = ActivityManager.getService().handleIncomingUser(
                Binder.getCallingPid(),
                callingUid,
                userId,
                /*allowAll=*/ false,
                /*requireFull=*/ false,
                "addPowerSaveTempWhitelistApp", null);
        final long token = Binder.clearCallingIdentity();
        try {
            addPowerSaveTempWhitelistAppInternal(callingUid,
                    packageName, duration, userId, true, reason);
        } finally {
            Binder.restoreCallingIdentity(token);
        }
    }

    void removePowerSaveTempWhitelistAppChecked(String packageName, int userId)
            throws RemoteException {
        getContext().enforceCallingPermission(
                Manifest.permission.CHANGE_DEVICE_IDLE_TEMP_WHITELIST,
                "No permission to change device idle whitelist");
        final int callingUid = Binder.getCallingUid();
        userId = ActivityManager.getService().handleIncomingUser(
                Binder.getCallingPid(),
                callingUid,
                userId,
                /*allowAll=*/ false,
                /*requireFull=*/ false,
                "removePowerSaveTempWhitelistApp", null);
        final long token = Binder.clearCallingIdentity();
        try {
            removePowerSaveTempWhitelistAppInternal(packageName, userId);
        } finally {
            Binder.restoreCallingIdentity(token);
        }
    }

    /**
     * Adds an app to the temporary whitelist and resets the endTime for granting the
     * app an exemption to access network and acquire wakelocks.
     */
    void addPowerSaveTempWhitelistAppInternal(int callingUid, String packageName,
            long duration, int userId, boolean sync, String reason) {
        try {
            int uid = getContext().getPackageManager().getPackageUidAsUser(packageName, userId);
            addPowerSaveTempWhitelistAppDirectInternal(callingUid, uid, duration, sync, reason);
        } catch (NameNotFoundException e) {
        }
    }

    /**
     * Adds an app to the temporary whitelist and resets the endTime for granting the
     * app an exemption to access network and acquire wakelocks.
     */
    void addPowerSaveTempWhitelistAppDirectInternal(int callingUid, int uid,
            long duration, boolean sync, String reason) {
        final long timeNow = SystemClock.elapsedRealtime();
        boolean informWhitelistChanged = false;
        int appId = UserHandle.getAppId(uid);
        synchronized (this) {
            int callingAppId = UserHandle.getAppId(callingUid);
            if (callingAppId >= Process.FIRST_APPLICATION_UID) {
                if (!mPowerSaveWhitelistSystemAppIds.get(callingAppId)) {
                    throw new SecurityException("Calling app " + UserHandle.formatUid(callingUid)
                            + " is not on whitelist");
                }
            }
            duration = Math.min(duration, mConstants.MAX_TEMP_APP_WHITELIST_DURATION);
            Pair<MutableLong, String> entry = mTempWhitelistAppIdEndTimes.get(appId);
            final boolean newEntry = entry == null;
            // Set the new end time
            if (newEntry) {
                entry = new Pair<>(new MutableLong(0), reason);
                mTempWhitelistAppIdEndTimes.put(appId, entry);
            }
            entry.first.value = timeNow + duration;
            if (DEBUG) {
                Slog.d(TAG, "Adding AppId " + appId + " to temp whitelist. New entry: " + newEntry);
            }
            if (newEntry) {
                // No pending timeout for the app id, post a delayed message
                try {
                    mBatteryStats.noteEvent(BatteryStats.HistoryItem.EVENT_TEMP_WHITELIST_START,
                            reason, uid);
                } catch (RemoteException e) {
                }
                postTempActiveTimeoutMessage(appId, duration);
                updateTempWhitelistAppIdsLocked(appId, true);
                if (sync) {
                    informWhitelistChanged = true;
                } else {
                    mHandler.obtainMessage(MSG_REPORT_TEMP_APP_WHITELIST_CHANGED, appId, 1)
                            .sendToTarget();
                }
                reportTempWhitelistChangedLocked();
            }
        }
        if (informWhitelistChanged) {
            mNetworkPolicyManagerInternal.onTempPowerSaveWhitelistChange(appId, true);
        }
    }

    /**
     * Removes an app from the temporary whitelist and notifies the observers.
     */
    private void removePowerSaveTempWhitelistAppInternal(String packageName, int userId) {
        try {
            final int uid = getContext().getPackageManager().getPackageUidAsUser(
                    packageName, userId);
            final int appId = UserHandle.getAppId(uid);
            removePowerSaveTempWhitelistAppDirectInternal(appId);
        } catch (NameNotFoundException e) {
        }
    }

    private void removePowerSaveTempWhitelistAppDirectInternal(int appId) {
        synchronized (this) {
            final int idx = mTempWhitelistAppIdEndTimes.indexOfKey(appId);
            if (idx < 0) {
                // Nothing else to do
                return;
            }
            final String reason = mTempWhitelistAppIdEndTimes.valueAt(idx).second;
            mTempWhitelistAppIdEndTimes.removeAt(idx);
            onAppRemovedFromTempWhitelistLocked(appId, reason);
        }
    }

    private void postTempActiveTimeoutMessage(int appId, long delay) {
        if (DEBUG) {
            Slog.d(TAG, "postTempActiveTimeoutMessage: appId=" + appId + ", delay=" + delay);
        }
        mHandler.sendMessageDelayed(
                mHandler.obtainMessage(MSG_TEMP_APP_WHITELIST_TIMEOUT, appId, 0), delay);
    }

    void checkTempAppWhitelistTimeout(int appId) {
        final long timeNow = SystemClock.elapsedRealtime();
        if (DEBUG) {
            Slog.d(TAG, "checkTempAppWhitelistTimeout: appId=" + appId + ", timeNow=" + timeNow);
        }
        synchronized (this) {
            Pair<MutableLong, String> entry = mTempWhitelistAppIdEndTimes.get(appId);
            if (entry == null) {
                // Nothing to do
                return;
            }
            if (timeNow >= entry.first.value) {
                mTempWhitelistAppIdEndTimes.delete(appId);
                onAppRemovedFromTempWhitelistLocked(appId, entry.second);
            } else {
                // Need more time
                if (DEBUG) {
                    Slog.d(TAG, "Time to remove AppId " + appId + ": " + entry.first.value);
                }
                postTempActiveTimeoutMessage(appId, entry.first.value - timeNow);
            }
        }
    }

    @GuardedBy("this")
    private void onAppRemovedFromTempWhitelistLocked(int appId, String reason) {
        if (DEBUG) {
            Slog.d(TAG, "Removing appId " + appId + " from temp whitelist");
        }
        updateTempWhitelistAppIdsLocked(appId, false);
        mHandler.obtainMessage(MSG_REPORT_TEMP_APP_WHITELIST_CHANGED, appId, 0)
                .sendToTarget();
        reportTempWhitelistChangedLocked();
        try {
            mBatteryStats.noteEvent(BatteryStats.HistoryItem.EVENT_TEMP_WHITELIST_FINISH,
                    reason, appId);
        } catch (RemoteException e) {
        }
    }

    public void exitIdleInternal(String reason) {
        synchronized (this) {
            mActiveReason = ACTIVE_REASON_FROM_BINDER_CALL;
            becomeActiveLocked(reason, Binder.getCallingUid());
        }
    }

    @VisibleForTesting
    boolean isNetworkConnected() {
        synchronized (this) {
            return mNetworkConnected;
        }
    }

    void updateConnectivityState(Intent connIntent) {
        ConnectivityManager cm;
        synchronized (this) {
            cm = mInjector.getConnectivityManager();
        }
        if (cm == null) {
            return;
        }
        // Note: can't call out to ConnectivityService with our lock held.
        NetworkInfo ni = cm.getActiveNetworkInfo();
        synchronized (this) {
            boolean conn;
            if (ni == null) {
                conn = false;
            } else {
                if (connIntent == null) {
                    conn = ni.isConnected();
                } else {
                    final int networkType =
                            connIntent.getIntExtra(ConnectivityManager.EXTRA_NETWORK_TYPE,
                                    ConnectivityManager.TYPE_NONE);
                    if (ni.getType() != networkType) {
                        return;
                    }
                    conn = !connIntent.getBooleanExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY,
                            false);
                }
            }
            if (conn != mNetworkConnected) {
                mNetworkConnected = conn;
                if (conn && mLightState == LIGHT_STATE_WAITING_FOR_NETWORK) {
                    stepLightIdleStateLocked("network");
                }
            }
        }
    }

    @VisibleForTesting
    boolean isScreenOn() {
        synchronized (this) {
            return mScreenOn;
        }
    }

    void updateInteractivityLocked() {
        // The interactivity state from the power manager tells us whether the display is
        // in a state that we need to keep things running so they will update at a normal
        // frequency.
        boolean screenOn = mPowerManager.isInteractive();
        if (DEBUG) Slog.d(TAG, "updateInteractivityLocked: screenOn=" + screenOn);
        if (!screenOn && mScreenOn) {
            mScreenOn = false;
            if (!mForceIdle) {
                becomeInactiveIfAppropriateLocked();
            }
        } else if (screenOn) {
            mScreenOn = true;
            if (!mForceIdle && (!mScreenLocked || !mConstants.WAIT_FOR_UNLOCK)) {
                mActiveReason = ACTIVE_REASON_SCREEN;
                becomeActiveLocked("screen", Process.myUid());
            }
        }
    }

    @VisibleForTesting
    boolean isCharging() {
        synchronized (this) {
            return mCharging;
        }
    }

    void updateChargingLocked(boolean charging) {
        if (DEBUG) Slog.i(TAG, "updateChargingLocked: charging=" + charging);
        if (!charging && mCharging) {
            mCharging = false;
            if (!mForceIdle) {
                becomeInactiveIfAppropriateLocked();
            }
        } else if (charging) {
            mCharging = charging;
            if (!mForceIdle) {
                mActiveReason = ACTIVE_REASON_CHARGING;
                becomeActiveLocked("charging", Process.myUid());
            }
        }
    }

    @VisibleForTesting
    boolean isQuickDozeEnabled() {
        synchronized (this) {
            return mQuickDozeActivated;
        }
    }

    /** Updates the quick doze flag and enters deep doze if appropriate. */
    @VisibleForTesting
    void updateQuickDozeFlagLocked(boolean enabled) {
        if (DEBUG) Slog.i(TAG, "updateQuickDozeFlagLocked: enabled=" + enabled);
        mQuickDozeActivated = enabled;
        mQuickDozeActivatedWhileIdling =
                mQuickDozeActivated && (mState == STATE_IDLE || mState == STATE_IDLE_MAINTENANCE);
        if (enabled) {
            // If Quick Doze is enabled, see if we should go straight into it.
            becomeInactiveIfAppropriateLocked();
        }
        // Going from Deep Doze to Light Idle (if quick doze becomes disabled) is tricky and
        // probably not worth the overhead, so leave in deep doze if that's the case until the
        // next natural time to come out of it.
    }


    /** Returns true if the screen is locked. */
    @VisibleForTesting
    boolean isKeyguardShowing() {
        synchronized (this) {
            return mScreenLocked;
        }
    }

    @VisibleForTesting
    void keyguardShowingLocked(boolean showing) {
        if (DEBUG) Slog.i(TAG, "keyguardShowing=" + showing);
        if (mScreenLocked != showing) {
            mScreenLocked = showing;
            if (mScreenOn && !mForceIdle && !mScreenLocked) {
                mActiveReason = ACTIVE_REASON_UNLOCKED;
                becomeActiveLocked("unlocked", Process.myUid());
            }
        }
    }

    @VisibleForTesting
    void scheduleReportActiveLocked(String activeReason, int activeUid) {
        Message msg = mHandler.obtainMessage(MSG_REPORT_ACTIVE, activeUid, 0, activeReason);
        mHandler.sendMessage(msg);
    }

    void becomeActiveLocked(String activeReason, int activeUid) {
        becomeActiveLocked(activeReason, activeUid, mConstants.INACTIVE_TIMEOUT, true);
    }

    private void becomeActiveLocked(String activeReason, int activeUid,
            long newInactiveTimeout, boolean changeLightIdle) {
        if (DEBUG) {
            Slog.i(TAG, "becomeActiveLocked, reason=" + activeReason
                    + ", changeLightIdle=" + changeLightIdle);
        }
        if (mState != STATE_ACTIVE || mLightState != STATE_ACTIVE) {
            EventLogTags.writeDeviceIdle(STATE_ACTIVE, activeReason);
            mState = STATE_ACTIVE;
            mInactiveTimeout = newInactiveTimeout;
            resetIdleManagementLocked();
            // Don't reset maintenance window start time if we're in a light idle maintenance window
            // because its used in the light idle budget calculation.
            if (mLightState != LIGHT_STATE_IDLE_MAINTENANCE) {
                mMaintenanceStartTime = 0;
            }

            if (changeLightIdle) {
                EventLogTags.writeDeviceIdleLight(LIGHT_STATE_ACTIVE, activeReason);
                mLightState = LIGHT_STATE_ACTIVE;
                resetLightIdleManagementLocked();
                // Only report active if light is also ACTIVE.
                scheduleReportActiveLocked(activeReason, activeUid);
                addEvent(EVENT_NORMAL, activeReason);
            }
        }
    }

    /** Must only be used in tests. */
    @VisibleForTesting
    void setDeepEnabledForTest(boolean enabled) {
        synchronized (this) {
            mDeepEnabled = enabled;
        }
    }

    /** Must only be used in tests. */
    @VisibleForTesting
    void setLightEnabledForTest(boolean enabled) {
        synchronized (this) {
            mLightEnabled = enabled;
        }
    }

    /** Sanity check to make sure DeviceIdleController and AlarmManager are on the same page. */
    private void verifyAlarmStateLocked() {
        if (mState == STATE_ACTIVE && mNextAlarmTime != 0) {
            Slog.wtf(TAG, "mState=ACTIVE but mNextAlarmTime=" + mNextAlarmTime);
        }
        if (mState != STATE_IDLE && mLocalAlarmManager.isIdling()) {
            Slog.wtf(TAG, "mState=" + stateToString(mState) + " but AlarmManager is idling");
        }
        if (mState == STATE_IDLE && !mLocalAlarmManager.isIdling()) {
            Slog.wtf(TAG, "mState=IDLE but AlarmManager is not idling");
        }
        if (mLightState == LIGHT_STATE_ACTIVE && mNextLightAlarmTime != 0) {
            Slog.wtf(TAG, "mLightState=ACTIVE but mNextLightAlarmTime is "
                    + TimeUtils.formatDuration(mNextLightAlarmTime - SystemClock.elapsedRealtime())
                    + " from now");
        }
    }

    void becomeInactiveIfAppropriateLocked() {
        verifyAlarmStateLocked();

        final boolean isScreenBlockingInactive =
                mScreenOn && (!mConstants.WAIT_FOR_UNLOCK || !mScreenLocked);
        if (DEBUG) {
            Slog.d(TAG, "becomeInactiveIfAppropriateLocked():"
                    + " isScreenBlockingInactive=" + isScreenBlockingInactive
                    + " (mScreenOn=" + mScreenOn
                    + ", WAIT_FOR_UNLOCK=" + mConstants.WAIT_FOR_UNLOCK
                    + ", mScreenLocked=" + mScreenLocked + ")"
                    + " mCharging=" + mCharging
                    + " mForceIdle=" + mForceIdle
            );
        }
        if (!mForceIdle && (mCharging || isScreenBlockingInactive)) {
            return;
        }
        // Become inactive and determine if we will ultimately go idle.
        if (mDeepEnabled) {
            if (mQuickDozeActivated) {
                if (mState == STATE_QUICK_DOZE_DELAY || mState == STATE_IDLE
                        || mState == STATE_IDLE_MAINTENANCE) {
                    // Already "idling". Don't want to restart the process.
                    // mLightState can't be LIGHT_STATE_ACTIVE if mState is any of these 3
                    // values, so returning here is safe.
                    return;
                }
                if (DEBUG) {
                    Slog.d(TAG, "Moved from "
                            + stateToString(mState) + " to STATE_QUICK_DOZE_DELAY");
                }
                mState = STATE_QUICK_DOZE_DELAY;
                // Make sure any motion sensing or locating is stopped.
                resetIdleManagementLocked();
                if (isUpcomingAlarmClock()) {
                    // If there's an upcoming AlarmClock alarm, we won't go into idle, so
                    // setting a wakeup alarm before the upcoming alarm is futile. Set the quick
                    // doze alarm to after the upcoming AlarmClock alarm.
                    scheduleAlarmLocked(
                            mAlarmManager.getNextWakeFromIdleTime() - mInjector.getElapsedRealtime()
                                    + mConstants.QUICK_DOZE_DELAY_TIMEOUT, false);
                } else {
                    // Wait a small amount of time in case something (eg: background service from
                    // recently closed app) needs to finish running.
                    scheduleAlarmLocked(mConstants.QUICK_DOZE_DELAY_TIMEOUT, false);
                }
                EventLogTags.writeDeviceIdle(mState, "no activity");
            } else if (mState == STATE_ACTIVE) {
                mState = STATE_INACTIVE;
                if (DEBUG) Slog.d(TAG, "Moved from STATE_ACTIVE to STATE_INACTIVE");
                resetIdleManagementLocked();
                long delay = mInactiveTimeout;
                if (shouldUseIdleTimeoutFactorLocked()) {
                    delay = (long) (mPreIdleFactor * delay);
                }
                if (isUpcomingAlarmClock()) {
                    // If there's an upcoming AlarmClock alarm, we won't go into idle, so
                    // setting a wakeup alarm before the upcoming alarm is futile. Set the idle
                    // alarm to after the upcoming AlarmClock alarm.
                    scheduleAlarmLocked(
                            mAlarmManager.getNextWakeFromIdleTime() - mInjector.getElapsedRealtime()
                                    + delay, false);
                } else {
                    scheduleAlarmLocked(delay, false);
                }
                EventLogTags.writeDeviceIdle(mState, "no activity");
            }
        }
        if (mLightState == LIGHT_STATE_ACTIVE && mLightEnabled) {
            mLightState = LIGHT_STATE_INACTIVE;
            if (DEBUG) Slog.d(TAG, "Moved from LIGHT_STATE_ACTIVE to LIGHT_STATE_INACTIVE");
            resetLightIdleManagementLocked();
            scheduleLightAlarmLocked(mConstants.LIGHT_IDLE_AFTER_INACTIVE_TIMEOUT);
            EventLogTags.writeDeviceIdleLight(mLightState, "no activity");
        }
    }

    private void resetIdleManagementLocked() {
        mNextIdlePendingDelay = 0;
        mNextIdleDelay = 0;
        mIdleStartTime = 0;
        mQuickDozeActivatedWhileIdling = false;
        cancelAlarmLocked();
        cancelSensingTimeoutAlarmLocked();
        cancelLocatingLocked();
        maybeStopMonitoringMotionLocked();
        mAnyMotionDetector.stop();
        updateActiveConstraintsLocked();
    }

    private void resetLightIdleManagementLocked() {
        mNextLightIdleDelay = 0;
        mCurLightIdleBudget = 0;
        cancelLightAlarmLocked();
    }

    void exitForceIdleLocked() {
        if (mForceIdle) {
            mForceIdle = false;
            if (mScreenOn || mCharging) {
                mActiveReason = ACTIVE_REASON_FORCED;
                becomeActiveLocked("exit-force", Process.myUid());
            }
        }
    }

    /**
     * Must only be used in tests.
     *
     * This sets the state value directly and thus doesn't trigger any behavioral changes.
     */
    @VisibleForTesting
    void setLightStateForTest(int lightState) {
        synchronized (this) {
            mLightState = lightState;
        }
    }

    @VisibleForTesting
    int getLightState() {
        return mLightState;
    }

    void stepLightIdleStateLocked(String reason) {
        if (mLightState == LIGHT_STATE_OVERRIDE) {
            // If we are already in deep device idle mode, then
            // there is nothing left to do for light mode.
            return;
        }

        if (DEBUG) Slog.d(TAG, "stepLightIdleStateLocked: mLightState=" + mLightState);
        EventLogTags.writeDeviceIdleLightStep();

        switch (mLightState) {
            case LIGHT_STATE_INACTIVE:
                mCurLightIdleBudget = mConstants.LIGHT_IDLE_MAINTENANCE_MIN_BUDGET;
                // Reset the upcoming idle delays.
                mNextLightIdleDelay = mConstants.LIGHT_IDLE_TIMEOUT;
                mMaintenanceStartTime = 0;
                if (!isOpsInactiveLocked()) {
                    // We have some active ops going on...  give them a chance to finish
                    // before going in to our first idle.
                    mLightState = LIGHT_STATE_PRE_IDLE;
                    EventLogTags.writeDeviceIdleLight(mLightState, reason);
                    scheduleLightAlarmLocked(mConstants.LIGHT_PRE_IDLE_TIMEOUT);
                    break;
                }
                // Nothing active, fall through to immediately idle.
            case LIGHT_STATE_PRE_IDLE:
            case LIGHT_STATE_IDLE_MAINTENANCE:
                if (mMaintenanceStartTime != 0) {
                    long duration = SystemClock.elapsedRealtime() - mMaintenanceStartTime;
                    if (duration < mConstants.LIGHT_IDLE_MAINTENANCE_MIN_BUDGET) {
                        // We didn't use up all of our minimum budget; add this to the reserve.
                        mCurLightIdleBudget +=
                                (mConstants.LIGHT_IDLE_MAINTENANCE_MIN_BUDGET - duration);
                    } else {
                        // We used more than our minimum budget; this comes out of the reserve.
                        mCurLightIdleBudget -=
                                (duration - mConstants.LIGHT_IDLE_MAINTENANCE_MIN_BUDGET);
                    }
                }
                mMaintenanceStartTime = 0;
                scheduleLightAlarmLocked(mNextLightIdleDelay);
                mNextLightIdleDelay = Math.min(mConstants.LIGHT_MAX_IDLE_TIMEOUT,
                        (long)(mNextLightIdleDelay * mConstants.LIGHT_IDLE_FACTOR));
                if (mNextLightIdleDelay < mConstants.LIGHT_IDLE_TIMEOUT) {
                    mNextLightIdleDelay = mConstants.LIGHT_IDLE_TIMEOUT;
                }
                if (DEBUG) Slog.d(TAG, "Moved to LIGHT_STATE_IDLE.");
                mLightState = LIGHT_STATE_IDLE;
                EventLogTags.writeDeviceIdleLight(mLightState, reason);
                addEvent(EVENT_LIGHT_IDLE, null);
                mGoingIdleWakeLock.acquire();
                mHandler.sendEmptyMessage(MSG_REPORT_IDLE_ON_LIGHT);
                break;
            case LIGHT_STATE_IDLE:
            case LIGHT_STATE_WAITING_FOR_NETWORK:
                if (mNetworkConnected || mLightState == LIGHT_STATE_WAITING_FOR_NETWORK) {
                    // We have been idling long enough, now it is time to do some work.
                    mActiveIdleOpCount = 1;
                    mActiveIdleWakeLock.acquire();
                    mMaintenanceStartTime = SystemClock.elapsedRealtime();
                    if (mCurLightIdleBudget < mConstants.LIGHT_IDLE_MAINTENANCE_MIN_BUDGET) {
                        mCurLightIdleBudget = mConstants.LIGHT_IDLE_MAINTENANCE_MIN_BUDGET;
                    } else if (mCurLightIdleBudget > mConstants.LIGHT_IDLE_MAINTENANCE_MAX_BUDGET) {
                        mCurLightIdleBudget = mConstants.LIGHT_IDLE_MAINTENANCE_MAX_BUDGET;
                    }
                    scheduleLightAlarmLocked(mCurLightIdleBudget);
                    if (DEBUG) Slog.d(TAG,
                            "Moved from LIGHT_STATE_IDLE to LIGHT_STATE_IDLE_MAINTENANCE.");
                    mLightState = LIGHT_STATE_IDLE_MAINTENANCE;
                    EventLogTags.writeDeviceIdleLight(mLightState, reason);
                    addEvent(EVENT_LIGHT_MAINTENANCE, null);
                    mHandler.sendEmptyMessage(MSG_REPORT_IDLE_OFF);
                } else {
                    // We'd like to do maintenance, but currently don't have network
                    // connectivity...  let's try to wait until the network comes back.
                    // We'll only wait for another full idle period, however, and then give up.
                    scheduleLightAlarmLocked(mNextLightIdleDelay);
                    if (DEBUG) Slog.d(TAG, "Moved to LIGHT_WAITING_FOR_NETWORK.");
                    mLightState = LIGHT_STATE_WAITING_FOR_NETWORK;
                    EventLogTags.writeDeviceIdleLight(mLightState, reason);
                }
                break;
        }
    }

    @VisibleForTesting
    int getState() {
        return mState;
    }

    /**
     * Returns true if there's an upcoming AlarmClock alarm that is soon enough to prevent the
     * device from going into idle.
     */
    private boolean isUpcomingAlarmClock() {
        return mInjector.getElapsedRealtime() + mConstants.MIN_TIME_TO_ALARM
                >= mAlarmManager.getNextWakeFromIdleTime();
    }

    @VisibleForTesting
    void stepIdleStateLocked(String reason) {
        if (DEBUG) Slog.d(TAG, "stepIdleStateLocked: mState=" + mState);
        EventLogTags.writeDeviceIdleStep();

        if (isUpcomingAlarmClock()) {
            // Whoops, there is an upcoming alarm.  We don't actually want to go idle.
            if (mState != STATE_ACTIVE) {
                mActiveReason = ACTIVE_REASON_ALARM;
                becomeActiveLocked("alarm", Process.myUid());
                becomeInactiveIfAppropriateLocked();
            }
            return;
        }

        if (mNumBlockingConstraints != 0 && !mForceIdle) {
            // We have some constraints from other parts of the system server preventing
            // us from moving to the next state.
            if (DEBUG) {
                Slog.i(TAG, "Cannot step idle state. Blocked by: " + mConstraints.values().stream()
                        .filter(x -> x.active)
                        .map(x -> x.name)
                        .collect(Collectors.joining(",")));
            }
            return;
        }

        switch (mState) {
            case STATE_INACTIVE:
                // We have now been inactive long enough, it is time to start looking
                // for motion and sleep some more while doing so.
                startMonitoringMotionLocked();
                long delay = mConstants.IDLE_AFTER_INACTIVE_TIMEOUT;
                if (shouldUseIdleTimeoutFactorLocked()) {
                    delay = (long) (mPreIdleFactor * delay);
                }
                scheduleAlarmLocked(delay, false);
                moveToStateLocked(STATE_IDLE_PENDING, reason);
                break;
            case STATE_IDLE_PENDING:
                moveToStateLocked(STATE_SENSING, reason);
                cancelLocatingLocked();
                mLocated = false;
                mLastGenericLocation = null;
                mLastGpsLocation = null;
                updateActiveConstraintsLocked();

                // Wait for open constraints and an accelerometer reading before moving on.
                if (mUseMotionSensor && mAnyMotionDetector.hasSensor()) {
                    scheduleSensingTimeoutAlarmLocked(mConstants.SENSING_TIMEOUT);
                    mNotMoving = false;
                    mAnyMotionDetector.checkForAnyMotion();
                    break;
                } else if (mNumBlockingConstraints != 0) {
                    cancelAlarmLocked();
                    break;
                }

                mNotMoving = true;
                // Otherwise, fall through and check this off the list of requirements.
            case STATE_SENSING:
                cancelSensingTimeoutAlarmLocked();
                moveToStateLocked(STATE_LOCATING, reason);
                scheduleAlarmLocked(mConstants.LOCATING_TIMEOUT, false);
                LocationManager locationManager = mInjector.getLocationManager();
                if (locationManager != null
                        && locationManager.getProvider(LocationManager.NETWORK_PROVIDER) != null) {
                    locationManager.requestLocationUpdates(mLocationRequest,
                            mGenericLocationListener, mHandler.getLooper());
                    mLocating = true;
                } else {
                    mHasNetworkLocation = false;
                }
                if (locationManager != null
                        && locationManager.getProvider(LocationManager.GPS_PROVIDER) != null) {
                    mHasGps = true;
                    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 5,
                            mGpsLocationListener, mHandler.getLooper());
                    mLocating = true;
                } else {
                    mHasGps = false;
                }
                // If we have a location provider, we're all set, the listeners will move state
                // forward.
                if (mLocating) {
                    break;
                }

                // Otherwise, we have to move from locating into idle maintenance.
            case STATE_LOCATING:
                cancelAlarmLocked();
                cancelLocatingLocked();
                mAnyMotionDetector.stop();

                // Intentional fallthrough -- time to go into IDLE state.
            case STATE_QUICK_DOZE_DELAY:
                // Reset the upcoming idle delays.
                mNextIdlePendingDelay = mConstants.IDLE_PENDING_TIMEOUT;
                mNextIdleDelay = mConstants.IDLE_TIMEOUT;

                // Everything is in place to go into IDLE state.
            case STATE_IDLE_MAINTENANCE:
                scheduleAlarmLocked(mNextIdleDelay, true);
                if (DEBUG) Slog.d(TAG, "Moved to STATE_IDLE. Next alarm in " + mNextIdleDelay +
                        " ms.");
                mNextIdleDelay = (long)(mNextIdleDelay * mConstants.IDLE_FACTOR);
                if (DEBUG) Slog.d(TAG, "Setting mNextIdleDelay = " + mNextIdleDelay);
                mIdleStartTime = SystemClock.elapsedRealtime();
                mNextIdleDelay = Math.min(mNextIdleDelay, mConstants.MAX_IDLE_TIMEOUT);
                if (mNextIdleDelay < mConstants.IDLE_TIMEOUT) {
                    mNextIdleDelay = mConstants.IDLE_TIMEOUT;
                }
                moveToStateLocked(STATE_IDLE, reason);
                if (mLightState != LIGHT_STATE_OVERRIDE) {
                    mLightState = LIGHT_STATE_OVERRIDE;
                    cancelLightAlarmLocked();
                }
                addEvent(EVENT_DEEP_IDLE, null);
                mGoingIdleWakeLock.acquire();
                mHandler.sendEmptyMessage(MSG_REPORT_IDLE_ON);
                break;
            case STATE_IDLE:
                // We have been idling long enough, now it is time to do some work.
                mActiveIdleOpCount = 1;
                mActiveIdleWakeLock.acquire();
                scheduleAlarmLocked(mNextIdlePendingDelay, false);
                if (DEBUG) Slog.d(TAG, "Moved from STATE_IDLE to STATE_IDLE_MAINTENANCE. " +
                        "Next alarm in " + mNextIdlePendingDelay + " ms.");
                mMaintenanceStartTime = SystemClock.elapsedRealtime();
                mNextIdlePendingDelay = Math.min(mConstants.MAX_IDLE_PENDING_TIMEOUT,
                        (long)(mNextIdlePendingDelay * mConstants.IDLE_PENDING_FACTOR));
                if (mNextIdlePendingDelay < mConstants.IDLE_PENDING_TIMEOUT) {
                    mNextIdlePendingDelay = mConstants.IDLE_PENDING_TIMEOUT;
                }
                moveToStateLocked(STATE_IDLE_MAINTENANCE, reason);
                addEvent(EVENT_DEEP_MAINTENANCE, null);
                mHandler.sendEmptyMessage(MSG_REPORT_IDLE_OFF);
                break;
        }
    }

    private void moveToStateLocked(int state, String reason) {
        final int oldState = mState;
        mState = state;
        if (DEBUG) {
            Slog.d(TAG, String.format("Moved from STATE_%s to STATE_%s.",
                    stateToString(oldState), stateToString(mState)));
        }
        EventLogTags.writeDeviceIdle(mState, reason);
        updateActiveConstraintsLocked();
    }

    void incActiveIdleOps() {
        synchronized (this) {
            mActiveIdleOpCount++;
        }
    }

    void decActiveIdleOps() {
        synchronized (this) {
            mActiveIdleOpCount--;
            if (mActiveIdleOpCount <= 0) {
                exitMaintenanceEarlyIfNeededLocked();
                mActiveIdleWakeLock.release();
            }
        }
    }

    /** Must only be used in tests. */
    @VisibleForTesting
    void setActiveIdleOpsForTest(int count) {
        synchronized (this) {
            mActiveIdleOpCount = count;
        }
    }

    void setJobsActive(boolean active) {
        synchronized (this) {
            mJobsActive = active;
            if (!active) {
                exitMaintenanceEarlyIfNeededLocked();
            }
        }
    }

    void setAlarmsActive(boolean active) {
        synchronized (this) {
            mAlarmsActive = active;
            if (!active) {
                exitMaintenanceEarlyIfNeededLocked();
            }
        }
    }

    @VisibleForTesting
    int setPreIdleTimeoutMode(int mode) {
        return setPreIdleTimeoutFactor(getPreIdleTimeoutByMode(mode));
    }

    @VisibleForTesting
    float getPreIdleTimeoutByMode(int mode) {
        switch (mode) {
            case PowerManager.PRE_IDLE_TIMEOUT_MODE_LONG: {
                return mConstants.PRE_IDLE_FACTOR_LONG;
            }
            case PowerManager.PRE_IDLE_TIMEOUT_MODE_SHORT: {
                return mConstants.PRE_IDLE_FACTOR_SHORT;
            }
            case PowerManager.PRE_IDLE_TIMEOUT_MODE_NORMAL: {
                return 1.0f;
            }
            default: {
                Slog.w(TAG, "Invalid time out factor mode: " + mode);
                return 1.0f;
            }
        }
    }

    @VisibleForTesting
    float getPreIdleTimeoutFactor() {
        return mPreIdleFactor;
    }

    @VisibleForTesting
    int setPreIdleTimeoutFactor(float ratio) {
        if (!mDeepEnabled) {
            if (DEBUG) Slog.d(TAG, "setPreIdleTimeoutFactor: Deep Idle disable");
            return SET_IDLE_FACTOR_RESULT_NOT_SUPPORT;
        } else if (ratio <= MIN_PRE_IDLE_FACTOR_CHANGE) {
            if (DEBUG) Slog.d(TAG, "setPreIdleTimeoutFactor: Invalid input");
            return SET_IDLE_FACTOR_RESULT_INVALID;
        } else if (Math.abs(ratio - mPreIdleFactor) < MIN_PRE_IDLE_FACTOR_CHANGE) {
            if (DEBUG) Slog.d(TAG, "setPreIdleTimeoutFactor: New factor same as previous factor");
            return SET_IDLE_FACTOR_RESULT_IGNORED;
        }
        synchronized (this) {
            mLastPreIdleFactor = mPreIdleFactor;
            mPreIdleFactor = ratio;
        }
        if (DEBUG) Slog.d(TAG, "setPreIdleTimeoutFactor: " + ratio);
        postUpdatePreIdleFactor();
        return SET_IDLE_FACTOR_RESULT_OK;
    }

    @VisibleForTesting
    void resetPreIdleTimeoutMode() {
        synchronized (this) {
            mLastPreIdleFactor = mPreIdleFactor;
            mPreIdleFactor = 1.0f;
        }
        if (DEBUG) Slog.d(TAG, "resetPreIdleTimeoutMode to 1.0");
        postResetPreIdleTimeoutFactor();
    }

    private void postUpdatePreIdleFactor() {
        mHandler.sendEmptyMessage(MSG_UPDATE_PRE_IDLE_TIMEOUT_FACTOR);
    }

    private void postResetPreIdleTimeoutFactor() {
        mHandler.sendEmptyMessage(MSG_RESET_PRE_IDLE_TIMEOUT_FACTOR);
    }

    private void updatePreIdleFactor() {
        synchronized (this) {
            if (!shouldUseIdleTimeoutFactorLocked()) {
                return;
            }
            if (mState == STATE_INACTIVE || mState == STATE_IDLE_PENDING) {
                if (mNextAlarmTime == 0) {
                    return;
                }
                long delay = mNextAlarmTime - SystemClock.elapsedRealtime();
                if (delay < MIN_STATE_STEP_ALARM_CHANGE) {
                    return;
                }
                long newDelay = (long) (delay / mLastPreIdleFactor * mPreIdleFactor);
                if (Math.abs(delay - newDelay) < MIN_STATE_STEP_ALARM_CHANGE) {
                    return;
                }
                scheduleAlarmLocked(newDelay, false);
            }
        }
    }

    private void maybeDoImmediateMaintenance() {
        synchronized (this) {
            if (mState == STATE_IDLE) {
                long duration = SystemClock.elapsedRealtime() - mIdleStartTime;
                /* Let's trgger a immediate maintenance,
                 * if it has been idle for a long time */
                if (duration > mConstants.IDLE_TIMEOUT) {
                    scheduleAlarmLocked(0, false);
                }
            }
        }
    }

    private boolean shouldUseIdleTimeoutFactorLocked() {
        // exclude ACTIVE_REASON_MOTION, for exclude device in pocket case
        if (mActiveReason == ACTIVE_REASON_MOTION) {
            return false;
        }
        return true;
    }

    /** Must only be used in tests. */
    @VisibleForTesting
    void setIdleStartTimeForTest(long idleStartTime) {
        synchronized (this) {
            mIdleStartTime = idleStartTime;
            maybeDoImmediateMaintenance();
        }
    }

    @VisibleForTesting
    long getNextAlarmTime() {
        return mNextAlarmTime;
    }

    boolean isOpsInactiveLocked() {
        return mActiveIdleOpCount <= 0 && !mJobsActive && !mAlarmsActive;
    }

    void exitMaintenanceEarlyIfNeededLocked() {
        if (mState == STATE_IDLE_MAINTENANCE || mLightState == LIGHT_STATE_IDLE_MAINTENANCE
                || mLightState == LIGHT_STATE_PRE_IDLE) {
            if (isOpsInactiveLocked()) {
                final long now = SystemClock.elapsedRealtime();
                if (DEBUG) {
                    StringBuilder sb = new StringBuilder();
                    sb.append("Exit: start=");
                    TimeUtils.formatDuration(mMaintenanceStartTime, sb);
                    sb.append(" now=");
                    TimeUtils.formatDuration(now, sb);
                    Slog.d(TAG, sb.toString());
                }
                if (mState == STATE_IDLE_MAINTENANCE) {
                    stepIdleStateLocked("s:early");
                } else if (mLightState == LIGHT_STATE_PRE_IDLE) {
                    stepLightIdleStateLocked("s:predone");
                } else {
                    stepLightIdleStateLocked("s:early");
                }
            }
        }
    }

    void motionLocked() {
        if (DEBUG) Slog.d(TAG, "motionLocked()");
        mLastMotionEventElapsed = mInjector.getElapsedRealtime();
        handleMotionDetectedLocked(mConstants.MOTION_INACTIVE_TIMEOUT, "motion");
    }

    void handleMotionDetectedLocked(long timeout, String type) {
        if (mStationaryListeners.size() > 0) {
            postStationaryStatusUpdated();
            scheduleMotionTimeoutAlarmLocked();
            // We need to re-register the motion listener, but we don't want the sensors to be
            // constantly active or to churn the CPU by registering too early, register after some
            // delay.
            scheduleMotionRegistrationAlarmLocked();
        }
        if (mQuickDozeActivated && !mQuickDozeActivatedWhileIdling) {
            // Don't exit idle due to motion if quick doze is enabled.
            // However, if the device started idling due to the normal progression (going through
            // all the states) and then had quick doze activated, come out briefly on motion so the
            // user can get slightly fresher content.
            return;
        }
        maybeStopMonitoringMotionLocked();
        // The device is not yet active, so we want to go back to the pending idle
        // state to wait again for no motion.  Note that we only monitor for motion
        // after moving out of the inactive state, so no need to worry about that.
        final boolean becomeInactive = mState != STATE_ACTIVE
                || mLightState == LIGHT_STATE_OVERRIDE;
        // We only want to change the IDLE state if it's OVERRIDE.
        becomeActiveLocked(type, Process.myUid(), timeout, mLightState == LIGHT_STATE_OVERRIDE);
        if (becomeInactive) {
            becomeInactiveIfAppropriateLocked();
        }
    }

    void receivedGenericLocationLocked(Location location) {
        if (mState != STATE_LOCATING) {
            cancelLocatingLocked();
            return;
        }
        if (DEBUG) Slog.d(TAG, "Generic location: " + location);
        mLastGenericLocation = new Location(location);
        if (location.getAccuracy() > mConstants.LOCATION_ACCURACY && mHasGps) {
            return;
        }
        mLocated = true;
        if (mNotMoving) {
            stepIdleStateLocked("s:location");
        }
    }

    void receivedGpsLocationLocked(Location location) {
        if (mState != STATE_LOCATING) {
            cancelLocatingLocked();
            return;
        }
        if (DEBUG) Slog.d(TAG, "GPS location: " + location);
        mLastGpsLocation = new Location(location);
        if (location.getAccuracy() > mConstants.LOCATION_ACCURACY) {
            return;
        }
        mLocated = true;
        if (mNotMoving) {
            stepIdleStateLocked("s:gps");
        }
    }

    void startMonitoringMotionLocked() {
        if (DEBUG) Slog.d(TAG, "startMonitoringMotionLocked()");
        if (mMotionSensor != null && !mMotionListener.active) {
            mMotionListener.registerLocked();
        }
    }

    /**
     * Stops motion monitoring. Will not stop monitoring if there are registered stationary
     * listeners.
     */
    private void maybeStopMonitoringMotionLocked() {
        if (DEBUG) Slog.d(TAG, "maybeStopMonitoringMotionLocked()");
        if (mMotionSensor != null && mStationaryListeners.size() == 0) {
            if (mMotionListener.active) {
                mMotionListener.unregisterLocked();
                cancelMotionTimeoutAlarmLocked();
            }
            cancelMotionRegistrationAlarmLocked();
        }
    }

    void cancelAlarmLocked() {
        if (mNextAlarmTime != 0) {
            mNextAlarmTime = 0;
            mAlarmManager.cancel(mDeepAlarmListener);
        }
    }

    void cancelLightAlarmLocked() {
        if (mNextLightAlarmTime != 0) {
            mNextLightAlarmTime = 0;
            mAlarmManager.cancel(mLightAlarmListener);
        }
    }

    void cancelLocatingLocked() {
        if (mLocating) {
            LocationManager locationManager = mInjector.getLocationManager();
            locationManager.removeUpdates(mGenericLocationListener);
            locationManager.removeUpdates(mGpsLocationListener);
            mLocating = false;
        }
    }

    private void cancelMotionTimeoutAlarmLocked() {
        mAlarmManager.cancel(mMotionTimeoutAlarmListener);
    }

    private void cancelMotionRegistrationAlarmLocked() {
        mAlarmManager.cancel(mMotionRegistrationAlarmListener);
    }

    void cancelSensingTimeoutAlarmLocked() {
        if (mNextSensingTimeoutAlarmTime != 0) {
            mNextSensingTimeoutAlarmTime = 0;
            mAlarmManager.cancel(mSensingTimeoutAlarmListener);
        }
    }

    void scheduleAlarmLocked(long delay, boolean idleUntil) {
        if (DEBUG) Slog.d(TAG, "scheduleAlarmLocked(" + delay + ", " + idleUntil + ")");

        if (mUseMotionSensor && mMotionSensor == null
                && mState != STATE_QUICK_DOZE_DELAY
                && mState != STATE_IDLE
                && mState != STATE_IDLE_MAINTENANCE) {
            // If there is no motion sensor on this device, but we need one, then we won't schedule
            // alarms, because we can't determine if the device is not moving.  This effectively
            // turns off normal execution of device idling, although it is still possible to
            // manually poke it by pretending like the alarm is going off.
            // STATE_QUICK_DOZE_DELAY skips the motion sensing so if the state is past the motion
            // sensing stage (ie, is QUICK_DOZE_DELAY, IDLE, or IDLE_MAINTENANCE), then idling
            // can continue until the user interacts with the device.
            return;
        }
        mNextAlarmTime = SystemClock.elapsedRealtime() + delay;
        if (idleUntil) {
            mAlarmManager.setIdleUntil(AlarmManager.ELAPSED_REALTIME_WAKEUP,
                    mNextAlarmTime, "DeviceIdleController.deep", mDeepAlarmListener, mHandler);
        } else {
            mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
                    mNextAlarmTime, "DeviceIdleController.deep", mDeepAlarmListener, mHandler);
        }
    }

    void scheduleLightAlarmLocked(long delay) {
        if (DEBUG) Slog.d(TAG, "scheduleLightAlarmLocked(" + delay + ")");
        mNextLightAlarmTime = SystemClock.elapsedRealtime() + delay;
        mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
                mNextLightAlarmTime, "DeviceIdleController.light", mLightAlarmListener, mHandler);
    }

    private void scheduleMotionRegistrationAlarmLocked() {
        if (DEBUG) Slog.d(TAG, "scheduleMotionRegistrationAlarmLocked");
        long nextMotionRegistrationAlarmTime =
                mInjector.getElapsedRealtime() + mConstants.MOTION_INACTIVE_TIMEOUT / 2;
        mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, nextMotionRegistrationAlarmTime,
                "DeviceIdleController.motion_registration", mMotionRegistrationAlarmListener,
                mHandler);
    }

    private void scheduleMotionTimeoutAlarmLocked() {
        if (DEBUG) Slog.d(TAG, "scheduleMotionAlarmLocked");
        long nextMotionTimeoutAlarmTime =
                mInjector.getElapsedRealtime() + mConstants.MOTION_INACTIVE_TIMEOUT;
        mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, nextMotionTimeoutAlarmTime,
                "DeviceIdleController.motion", mMotionTimeoutAlarmListener, mHandler);
    }

    void scheduleSensingTimeoutAlarmLocked(long delay) {
        if (DEBUG) Slog.d(TAG, "scheduleSensingAlarmLocked(" + delay + ")");
        mNextSensingTimeoutAlarmTime = SystemClock.elapsedRealtime() + delay;
        mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, mNextSensingTimeoutAlarmTime,
            "DeviceIdleController.sensing", mSensingTimeoutAlarmListener, mHandler);
    }

    private static int[] buildAppIdArray(ArrayMap<String, Integer> systemApps,
            ArrayMap<String, Integer> userApps, SparseBooleanArray outAppIds) {
        outAppIds.clear();
        if (systemApps != null) {
            for (int i = 0; i < systemApps.size(); i++) {
                outAppIds.put(systemApps.valueAt(i), true);
            }
        }
        if (userApps != null) {
            for (int i = 0; i < userApps.size(); i++) {
                outAppIds.put(userApps.valueAt(i), true);
            }
        }
        int size = outAppIds.size();
        int[] appids = new int[size];
        for (int i = 0; i < size; i++) {
            appids[i] = outAppIds.keyAt(i);
        }
        return appids;
    }

    private void updateWhitelistAppIdsLocked() {
        mPowerSaveWhitelistExceptIdleAppIdArray = buildAppIdArray(mPowerSaveWhitelistAppsExceptIdle,
                mPowerSaveWhitelistUserApps, mPowerSaveWhitelistExceptIdleAppIds);
        mPowerSaveWhitelistAllAppIdArray = buildAppIdArray(mPowerSaveWhitelistApps,
                mPowerSaveWhitelistUserApps, mPowerSaveWhitelistAllAppIds);
        mPowerSaveWhitelistUserAppIdArray = buildAppIdArray(null,
                mPowerSaveWhitelistUserApps, mPowerSaveWhitelistUserAppIds);
        if (mLocalActivityManager != null) {
            mLocalActivityManager.setDeviceIdleWhitelist(
                    mPowerSaveWhitelistAllAppIdArray, mPowerSaveWhitelistExceptIdleAppIdArray);
        }
        if (mLocalPowerManager != null) {
            if (DEBUG) {
                Slog.d(TAG, "Setting wakelock whitelist to "
                        + Arrays.toString(mPowerSaveWhitelistAllAppIdArray));
            }
            mLocalPowerManager.setDeviceIdleWhitelist(mPowerSaveWhitelistAllAppIdArray);
        }
        passWhiteListsToForceAppStandbyTrackerLocked();
    }

    private void updateTempWhitelistAppIdsLocked(int appId, boolean adding) {
        final int size = mTempWhitelistAppIdEndTimes.size();
        if (mTempWhitelistAppIdArray.length != size) {
            mTempWhitelistAppIdArray = new int[size];
        }
        for (int i = 0; i < size; i++) {
            mTempWhitelistAppIdArray[i] = mTempWhitelistAppIdEndTimes.keyAt(i);
        }
        if (mLocalActivityManager != null) {
            if (DEBUG) {
                Slog.d(TAG, "Setting activity manager temp whitelist to "
                        + Arrays.toString(mTempWhitelistAppIdArray));
            }
            mLocalActivityManager.updateDeviceIdleTempWhitelist(mTempWhitelistAppIdArray, appId,
                    adding);
        }
        if (mLocalPowerManager != null) {
            if (DEBUG) {
                Slog.d(TAG, "Setting wakelock temp whitelist to "
                        + Arrays.toString(mTempWhitelistAppIdArray));
            }
            mLocalPowerManager.setDeviceIdleTempWhitelist(mTempWhitelistAppIdArray);
        }
        passWhiteListsToForceAppStandbyTrackerLocked();
    }

    private void reportPowerSaveWhitelistChangedLocked() {
        Intent intent = new Intent(PowerManager.ACTION_POWER_SAVE_WHITELIST_CHANGED);
        intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
        getContext().sendBroadcastAsUser(intent, UserHandle.SYSTEM);
    }

    private void reportTempWhitelistChangedLocked() {
        Intent intent = new Intent(PowerManager.ACTION_POWER_SAVE_TEMP_WHITELIST_CHANGED);
        intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
        getContext().sendBroadcastAsUser(intent, UserHandle.SYSTEM);
    }

    private void passWhiteListsToForceAppStandbyTrackerLocked() {
        mAppStateTracker.setPowerSaveWhitelistAppIds(
                mPowerSaveWhitelistExceptIdleAppIdArray,
                mPowerSaveWhitelistUserAppIdArray,
                mTempWhitelistAppIdArray);
    }

    void readConfigFileLocked() {
        if (DEBUG) Slog.d(TAG, "Reading config from " + mConfigFile.getBaseFile());
        mPowerSaveWhitelistUserApps.clear();
        FileInputStream stream;
        try {
            stream = mConfigFile.openRead();
        } catch (FileNotFoundException e) {
            return;
        }
        try {
            XmlPullParser parser = Xml.newPullParser();
            parser.setInput(stream, StandardCharsets.UTF_8.name());
            readConfigFileLocked(parser);
        } catch (XmlPullParserException e) {
        } finally {
            try {
                stream.close();
            } catch (IOException e) {
            }
        }
    }

    private void readConfigFileLocked(XmlPullParser parser) {
        final PackageManager pm = getContext().getPackageManager();

        try {
            int type;
            while ((type = parser.next()) != XmlPullParser.START_TAG
                    && type != XmlPullParser.END_DOCUMENT) {
                ;
            }

            if (type != XmlPullParser.START_TAG) {
                throw new IllegalStateException("no start tag found");
            }

            int outerDepth = parser.getDepth();
            while ((type = parser.next()) != XmlPullParser.END_DOCUMENT
                    && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) {
                if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) {
                    continue;
                }

                String tagName = parser.getName();
                switch (tagName) {
                    case "wl":
                        String name = parser.getAttributeValue(null, "n");
                        if (name != null) {
                            try {
                                ApplicationInfo ai = pm.getApplicationInfo(name,
                                        PackageManager.MATCH_ANY_USER);
                                mPowerSaveWhitelistUserApps.put(ai.packageName,
                                        UserHandle.getAppId(ai.uid));
                            } catch (PackageManager.NameNotFoundException e) {
                            }
                        }
                        break;
                    case "un-wl":
                        final String packageName = parser.getAttributeValue(null, "n");
                        if (mPowerSaveWhitelistApps.containsKey(packageName)) {
                            mRemovedFromSystemWhitelistApps.put(packageName,
                                    mPowerSaveWhitelistApps.remove(packageName));
                        }
                        break;
                    default:
                        Slog.w(TAG, "Unknown element under <config>: "
                                + parser.getName());
                        XmlUtils.skipCurrentTag(parser);
                        break;
                }
            }

        } catch (IllegalStateException e) {
            Slog.w(TAG, "Failed parsing config " + e);
        } catch (NullPointerException e) {
            Slog.w(TAG, "Failed parsing config " + e);
        } catch (NumberFormatException e) {
            Slog.w(TAG, "Failed parsing config " + e);
        } catch (XmlPullParserException e) {
            Slog.w(TAG, "Failed parsing config " + e);
        } catch (IOException e) {
            Slog.w(TAG, "Failed parsing config " + e);
        } catch (IndexOutOfBoundsException e) {
            Slog.w(TAG, "Failed parsing config " + e);
        }
    }

    void writeConfigFileLocked() {
        mHandler.removeMessages(MSG_WRITE_CONFIG);
        mHandler.sendEmptyMessageDelayed(MSG_WRITE_CONFIG, 5000);
    }

    void handleWriteConfigFile() {
        final ByteArrayOutputStream memStream = new ByteArrayOutputStream();

        try {
            synchronized (this) {
                XmlSerializer out = new FastXmlSerializer();
                out.setOutput(memStream, StandardCharsets.UTF_8.name());
                writeConfigFileLocked(out);
            }
        } catch (IOException e) {
        }

        synchronized (mConfigFile) {
            FileOutputStream stream = null;
            try {
                stream = mConfigFile.startWrite();
                memStream.writeTo(stream);
                mConfigFile.finishWrite(stream);
            } catch (IOException e) {
                Slog.w(TAG, "Error writing config file", e);
                mConfigFile.failWrite(stream);
            }
        }
    }

    void writeConfigFileLocked(XmlSerializer out) throws IOException {
        out.startDocument(null, true);
        out.startTag(null, "config");
        for (int i=0; i<mPowerSaveWhitelistUserApps.size(); i++) {
            String name = mPowerSaveWhitelistUserApps.keyAt(i);
            out.startTag(null, "wl");
            out.attribute(null, "n", name);
            out.endTag(null, "wl");
        }
        for (int i = 0; i < mRemovedFromSystemWhitelistApps.size(); i++) {
            out.startTag(null, "un-wl");
            out.attribute(null, "n", mRemovedFromSystemWhitelistApps.keyAt(i));
            out.endTag(null, "un-wl");
        }
        out.endTag(null, "config");
        out.endDocument();
    }

    static void dumpHelp(PrintWriter pw) {
        pw.println("Device idle controller (deviceidle) commands:");
        pw.println("  help");
        pw.println("    Print this help text.");
        pw.println("  step [light|deep]");
        pw.println("    Immediately step to next state, without waiting for alarm.");
        pw.println("  force-idle [light|deep]");
        pw.println("    Force directly into idle mode, regardless of other device state.");
        pw.println("  force-inactive");
        pw.println("    Force to be inactive, ready to freely step idle states.");
        pw.println("  unforce");
        pw.println("    Resume normal functioning after force-idle or force-inactive.");
        pw.println("  get [light|deep|force|screen|charging|network]");
        pw.println("    Retrieve the current given state.");
        pw.println("  disable [light|deep|all]");
        pw.println("    Completely disable device idle mode.");
        pw.println("  enable [light|deep|all]");
        pw.println("    Re-enable device idle mode after it had previously been disabled.");
        pw.println("  enabled [light|deep|all]");
        pw.println("    Print 1 if device idle mode is currently enabled, else 0.");
        pw.println("  whitelist");
        pw.println("    Print currently whitelisted apps.");
        pw.println("  whitelist [package ...]");
        pw.println("    Add (prefix with +) or remove (prefix with -) packages.");
        pw.println("  sys-whitelist [package ...|reset]");
        pw.println("    Prefix the package with '-' to remove it from the system whitelist or '+'"
                + " to put it back in the system whitelist.");
        pw.println("    Note that only packages that were"
                + " earlier removed from the system whitelist can be added back.");
        pw.println("    reset will reset the whitelist to the original state");
        pw.println("    Prints the system whitelist if no arguments are specified");
        pw.println("  except-idle-whitelist [package ...|reset]");
        pw.println("    Prefix the package with '+' to add it to whitelist or "
                + "'=' to check if it is already whitelisted");
        pw.println("    [reset] will reset the whitelist to it's original state");
        pw.println("    Note that unlike <whitelist> cmd, "
                + "changes made using this won't be persisted across boots");
        pw.println("  tempwhitelist");
        pw.println("    Print packages that are temporarily whitelisted.");
        pw.println("  tempwhitelist [-u USER] [-d DURATION] [-r] [package]");
        pw.println("    Temporarily place package in whitelist for DURATION milliseconds.");
        pw.println("    If no DURATION is specified, 10 seconds is used");
        pw.println("    If [-r] option is used, then the package is removed from temp whitelist "
                + "and any [-d] is ignored");
        pw.println("  motion");
        pw.println("    Simulate a motion event to bring the device out of deep doze");
        pw.println("  pre-idle-factor [0|1|2]");
        pw.println("    Set a new factor to idle time before step to idle"
                + "(inactive_to and idle_after_inactive_to)");
        pw.println("  reset-pre-idle-factor");
        pw.println("    Reset factor to idle time to default");
    }

    class Shell extends ShellCommand {
        int userId = UserHandle.USER_SYSTEM;

        @Override
        public int onCommand(String cmd) {
            return onShellCommand(this, cmd);
        }

        @Override
        public void onHelp() {
            PrintWriter pw = getOutPrintWriter();
            dumpHelp(pw);
        }
    }

    int onShellCommand(Shell shell, String cmd) {
        PrintWriter pw = shell.getOutPrintWriter();
        if ("step".equals(cmd)) {
            getContext().enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER,
                    null);
            synchronized (this) {
                long token = Binder.clearCallingIdentity();
                String arg = shell.getNextArg();
                try {
                    if (arg == null || "deep".equals(arg)) {
                        stepIdleStateLocked("s:shell");
                        pw.print("Stepped to deep: ");
                        pw.println(stateToString(mState));
                    } else if ("light".equals(arg)) {
                        stepLightIdleStateLocked("s:shell");
                        pw.print("Stepped to light: "); pw.println(lightStateToString(mLightState));
                    } else {
                        pw.println("Unknown idle mode: " + arg);
                    }
                } finally {
                    Binder.restoreCallingIdentity(token);
                }
            }
        } else if ("force-idle".equals(cmd)) {
            getContext().enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER,
                    null);
            synchronized (this) {
                long token = Binder.clearCallingIdentity();
                String arg = shell.getNextArg();
                try {
                    if (arg == null || "deep".equals(arg)) {
                        if (!mDeepEnabled) {
                            pw.println("Unable to go deep idle; not enabled");
                            return -1;
                        }
                        mForceIdle = true;
                        becomeInactiveIfAppropriateLocked();
                        int curState = mState;
                        while (curState != STATE_IDLE) {
                            stepIdleStateLocked("s:shell");
                            if (curState == mState) {
                                pw.print("Unable to go deep idle; stopped at ");
                                pw.println(stateToString(mState));
                                exitForceIdleLocked();
                                return -1;
                            }
                            curState = mState;
                        }
                        pw.println("Now forced in to deep idle mode");
                    } else if ("light".equals(arg)) {
                        mForceIdle = true;
                        becomeInactiveIfAppropriateLocked();
                        int curLightState = mLightState;
                        while (curLightState != LIGHT_STATE_IDLE) {
                            stepLightIdleStateLocked("s:shell");
                            if (curLightState == mLightState) {
                                pw.print("Unable to go light idle; stopped at ");
                                pw.println(lightStateToString(mLightState));
                                exitForceIdleLocked();
                                return -1;
                            }
                            curLightState = mLightState;
                        }
                        pw.println("Now forced in to light idle mode");
                    } else {
                        pw.println("Unknown idle mode: " + arg);
                    }
                } finally {
                    Binder.restoreCallingIdentity(token);
                }
            }
        } else if ("force-inactive".equals(cmd)) {
            getContext().enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER,
                    null);
            synchronized (this) {
                long token = Binder.clearCallingIdentity();
                try {
                    mForceIdle = true;
                    becomeInactiveIfAppropriateLocked();
                    pw.print("Light state: ");
                    pw.print(lightStateToString(mLightState));
                    pw.print(", deep state: ");
                    pw.println(stateToString(mState));
                } finally {
                    Binder.restoreCallingIdentity(token);
                }
            }
        } else if ("unforce".equals(cmd)) {
            getContext().enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER,
                    null);
            synchronized (this) {
                long token = Binder.clearCallingIdentity();
                try {
                    exitForceIdleLocked();
                    pw.print("Light state: ");
                    pw.print(lightStateToString(mLightState));
                    pw.print(", deep state: ");
                    pw.println(stateToString(mState));
                } finally {
                    Binder.restoreCallingIdentity(token);
                }
            }
        } else if ("get".equals(cmd)) {
            getContext().enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER,
                    null);
            synchronized (this) {
                String arg = shell.getNextArg();
                if (arg != null) {
                    long token = Binder.clearCallingIdentity();
                    try {
                        switch (arg) {
                            case "light": pw.println(lightStateToString(mLightState)); break;
                            case "deep": pw.println(stateToString(mState)); break;
                            case "force": pw.println(mForceIdle); break;
                            case "quick": pw.println(mQuickDozeActivated); break;
                            case "screen": pw.println(mScreenOn); break;
                            case "charging": pw.println(mCharging); break;
                            case "network": pw.println(mNetworkConnected); break;
                            default: pw.println("Unknown get option: " + arg); break;
                        }
                    } finally {
                        Binder.restoreCallingIdentity(token);
                    }
                } else {
                    pw.println("Argument required");
                }
            }
        } else if ("disable".equals(cmd)) {
            getContext().enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER,
                    null);
            synchronized (this) {
                long token = Binder.clearCallingIdentity();
                String arg = shell.getNextArg();
                try {
                    boolean becomeActive = false;
                    boolean valid = false;
                    if (arg == null || "deep".equals(arg) || "all".equals(arg)) {
                        valid = true;
                        if (mDeepEnabled) {
                            mDeepEnabled = false;
                            becomeActive = true;
                            pw.println("Deep idle mode disabled");
                        }
                    }
                    if (arg == null || "light".equals(arg) || "all".equals(arg)) {
                        valid = true;
                        if (mLightEnabled) {
                            mLightEnabled = false;
                            becomeActive = true;
                            pw.println("Light idle mode disabled");
                        }
                    }
                    if (becomeActive) {
                        mActiveReason = ACTIVE_REASON_FORCED;
                        becomeActiveLocked((arg == null ? "all" : arg) + "-disabled",
                                Process.myUid());
                    }
                    if (!valid) {
                        pw.println("Unknown idle mode: " + arg);
                    }
                } finally {
                    Binder.restoreCallingIdentity(token);
                }
            }
        } else if ("enable".equals(cmd)) {
            getContext().enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER,
                    null);
            synchronized (this) {
                long token = Binder.clearCallingIdentity();
                String arg = shell.getNextArg();
                try {
                    boolean becomeInactive = false;
                    boolean valid = false;
                    if (arg == null || "deep".equals(arg) || "all".equals(arg)) {
                        valid = true;
                        if (!mDeepEnabled) {
                            mDeepEnabled = true;
                            becomeInactive = true;
                            pw.println("Deep idle mode enabled");
                        }
                    }
                    if (arg == null || "light".equals(arg) || "all".equals(arg)) {
                        valid = true;
                        if (!mLightEnabled) {
                            mLightEnabled = true;
                            becomeInactive = true;
                            pw.println("Light idle mode enable");
                        }
                    }
                    if (becomeInactive) {
                        becomeInactiveIfAppropriateLocked();
                    }
                    if (!valid) {
                        pw.println("Unknown idle mode: " + arg);
                    }
                } finally {
                    Binder.restoreCallingIdentity(token);
                }
            }
        } else if ("enabled".equals(cmd)) {
            synchronized (this) {
                String arg = shell.getNextArg();
                if (arg == null || "all".equals(arg)) {
                    pw.println(mDeepEnabled && mLightEnabled ? "1" : 0);
                } else if ("deep".equals(arg)) {
                    pw.println(mDeepEnabled ? "1" : 0);
                } else if ("light".equals(arg)) {
                    pw.println(mLightEnabled ? "1" : 0);
                } else {
                    pw.println("Unknown idle mode: " + arg);
                }
            }
        } else if ("whitelist".equals(cmd)) {
            String arg = shell.getNextArg();
            if (arg != null) {
                getContext().enforceCallingOrSelfPermission(
                        android.Manifest.permission.DEVICE_POWER, null);
                long token = Binder.clearCallingIdentity();
                try {
                    do {
                        if (arg.length() < 1 || (arg.charAt(0) != '-'
                                && arg.charAt(0) != '+' && arg.charAt(0) != '=')) {
                            pw.println("Package must be prefixed with +, -, or =: " + arg);
                            return -1;
                        }
                        char op = arg.charAt(0);
                        String pkg = arg.substring(1);
                        if (op == '+') {
                            if (addPowerSaveWhitelistAppsInternal(Collections.singletonList(pkg))
                                    == 1) {
                                pw.println("Added: " + pkg);
                            } else {
                                pw.println("Unknown package: " + pkg);
                            }
                        } else if (op == '-') {
                            if (removePowerSaveWhitelistAppInternal(pkg)) {
                                pw.println("Removed: " + pkg);
                            }
                        } else {
                            pw.println(getPowerSaveWhitelistAppInternal(pkg));
                        }
                    } while ((arg=shell.getNextArg()) != null);
                } finally {
                    Binder.restoreCallingIdentity(token);
                }
            } else {
                synchronized (this) {
                    for (int j=0; j<mPowerSaveWhitelistAppsExceptIdle.size(); j++) {
                        pw.print("system-excidle,");
                        pw.print(mPowerSaveWhitelistAppsExceptIdle.keyAt(j));
                        pw.print(",");
                        pw.println(mPowerSaveWhitelistAppsExceptIdle.valueAt(j));
                    }
                    for (int j=0; j<mPowerSaveWhitelistApps.size(); j++) {
                        pw.print("system,");
                        pw.print(mPowerSaveWhitelistApps.keyAt(j));
                        pw.print(",");
                        pw.println(mPowerSaveWhitelistApps.valueAt(j));
                    }
                    for (int j=0; j<mPowerSaveWhitelistUserApps.size(); j++) {
                        pw.print("user,");
                        pw.print(mPowerSaveWhitelistUserApps.keyAt(j));
                        pw.print(",");
                        pw.println(mPowerSaveWhitelistUserApps.valueAt(j));
                    }
                }
            }
        } else if ("tempwhitelist".equals(cmd)) {
            long duration = 10000;
            boolean removePkg = false;
            String opt;
            while ((opt=shell.getNextOption()) != null) {
                if ("-u".equals(opt)) {
                    opt = shell.getNextArg();
                    if (opt == null) {
                        pw.println("-u requires a user number");
                        return -1;
                    }
                    shell.userId = Integer.parseInt(opt);
                } else if ("-d".equals(opt)) {
                    opt = shell.getNextArg();
                    if (opt == null) {
                        pw.println("-d requires a duration");
                        return -1;
                    }
                    duration = Long.parseLong(opt);
                } else if ("-r".equals(opt)) {
                    removePkg = true;
                }
            }
            String arg = shell.getNextArg();
            if (arg != null) {
                try {
                    if (removePkg) {
                        removePowerSaveTempWhitelistAppChecked(arg, shell.userId);
                    } else {
                        addPowerSaveTempWhitelistAppChecked(arg, duration, shell.userId, "shell");
                    }
                } catch (Exception e) {
                    pw.println("Failed: " + e);
                    return -1;
                }
            } else if (removePkg) {
                pw.println("[-r] requires a package name");
                return -1;
            } else {
                dumpTempWhitelistSchedule(pw, false);
            }
        } else if ("except-idle-whitelist".equals(cmd)) {
            getContext().enforceCallingOrSelfPermission(
                    android.Manifest.permission.DEVICE_POWER, null);
            final long token = Binder.clearCallingIdentity();
            try {
                String arg = shell.getNextArg();
                if (arg == null) {
                    pw.println("No arguments given");
                    return -1;
                } else if ("reset".equals(arg)) {
                    resetPowerSaveWhitelistExceptIdleInternal();
                } else {
                    do {
                        if (arg.length() < 1 || (arg.charAt(0) != '-'
                                && arg.charAt(0) != '+' && arg.charAt(0) != '=')) {
                            pw.println("Package must be prefixed with +, -, or =: " + arg);
                            return -1;
                        }
                        char op = arg.charAt(0);
                        String pkg = arg.substring(1);
                        if (op == '+') {
                            if (addPowerSaveWhitelistExceptIdleInternal(pkg)) {
                                pw.println("Added: " + pkg);
                            } else {
                                pw.println("Unknown package: " + pkg);
                            }
                        } else if (op == '=') {
                            pw.println(getPowerSaveWhitelistExceptIdleInternal(pkg));
                        } else {
                            pw.println("Unknown argument: " + arg);
                            return -1;
                        }
                    } while ((arg = shell.getNextArg()) != null);
                }
            } finally {
                Binder.restoreCallingIdentity(token);
            }
        } else if ("sys-whitelist".equals(cmd)) {
            String arg = shell.getNextArg();
            if (arg != null) {
                getContext().enforceCallingOrSelfPermission(
                        android.Manifest.permission.DEVICE_POWER, null);
                final long token = Binder.clearCallingIdentity();
                try {
                    if ("reset".equals(arg)) {
                        resetSystemPowerWhitelistInternal();
                    } else {
                        do {
                            if (arg.length() < 1
                                    || (arg.charAt(0) != '-' && arg.charAt(0) != '+')) {
                                pw.println("Package must be prefixed with + or - " + arg);
                                return -1;
                            }
                            final char op = arg.charAt(0);
                            final String pkg = arg.substring(1);
                            switch (op) {
                                case '+':
                                    if (restoreSystemPowerWhitelistAppInternal(pkg)) {
                                        pw.println("Restored " + pkg);
                                    }
                                    break;
                                case '-':
                                    if (removeSystemPowerWhitelistAppInternal(pkg)) {
                                        pw.println("Removed " + pkg);
                                    }
                                    break;
                            }
                        } while ((arg = shell.getNextArg()) != null);
                    }
                } finally {
                    Binder.restoreCallingIdentity(token);
                }
            } else {
                synchronized (this) {
                    for (int j = 0; j < mPowerSaveWhitelistApps.size(); j++) {
                        pw.print(mPowerSaveWhitelistApps.keyAt(j));
                        pw.print(",");
                        pw.println(mPowerSaveWhitelistApps.valueAt(j));
                    }
                }
            }
        } else if ("motion".equals(cmd)) {
            getContext().enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER,
                    null);
            synchronized (this) {
                long token = Binder.clearCallingIdentity();
                try {
                    motionLocked();
                    pw.print("Light state: ");
                    pw.print(lightStateToString(mLightState));
                    pw.print(", deep state: ");
                    pw.println(stateToString(mState));
                } finally {
                    Binder.restoreCallingIdentity(token);
                }
            }
        } else if ("pre-idle-factor".equals(cmd)) {
            getContext().enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER,
                    null);
            synchronized (this) {
                long token = Binder.clearCallingIdentity();
                int ret  = SET_IDLE_FACTOR_RESULT_UNINIT;
                try {
                    String arg = shell.getNextArg();
                    boolean valid = false;
                    int mode = 0;
                    if (arg != null) {
                        mode = Integer.parseInt(arg);
                        ret = setPreIdleTimeoutMode(mode);
                        if (ret == SET_IDLE_FACTOR_RESULT_OK) {
                            pw.println("pre-idle-factor: " + mode);
                            valid = true;
                        } else if (ret == SET_IDLE_FACTOR_RESULT_NOT_SUPPORT) {
                            valid = true;
                            pw.println("Deep idle not supported");
                        } else if (ret == SET_IDLE_FACTOR_RESULT_IGNORED) {
                            valid = true;
                            pw.println("Idle timeout factor not changed");
                        }
                    }
                    if (!valid) {
                        pw.println("Unknown idle timeout factor: " + arg
                                + ",(error code: " + ret + ")");
                    }
                } catch (NumberFormatException e) {
                    pw.println("Unknown idle timeout factor"
                            + ",(error code: " + ret + ")");
                } finally {
                    Binder.restoreCallingIdentity(token);
                }
            }
        } else if ("reset-pre-idle-factor".equals(cmd)) {
            getContext().enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER,
                    null);
            synchronized (this) {
                long token = Binder.clearCallingIdentity();
                try {
                    resetPreIdleTimeoutMode();
                } finally {
                    Binder.restoreCallingIdentity(token);
                }
            }
        } else {
            return shell.handleDefaultCommands(cmd);
        }
        return 0;
    }

    void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
        if (!DumpUtils.checkDumpPermission(getContext(), TAG, pw)) return;

        if (args != null) {
            int userId = UserHandle.USER_SYSTEM;
            for (int i=0; i<args.length; i++) {
                String arg = args[i];
                if ("-h".equals(arg)) {
                    dumpHelp(pw);
                    return;
                } else if ("-u".equals(arg)) {
                    i++;
                    if (i < args.length) {
                        arg = args[i];
                        userId = Integer.parseInt(arg);
                    }
                } else if ("-a".equals(arg)) {
                    // Ignore, we always dump all.
                } else if (arg.length() > 0 && arg.charAt(0) == '-'){
                    pw.println("Unknown option: " + arg);
                    return;
                } else {
                    Shell shell = new Shell();
                    shell.userId = userId;
                    String[] newArgs = new String[args.length-i];
                    System.arraycopy(args, i, newArgs, 0, args.length-i);
                    shell.exec(mBinderService, null, fd, null, newArgs, null,
                            new ResultReceiver(null));
                    return;
                }
            }
        }

        synchronized (this) {
            mConstants.dump(pw);

            if (mEventCmds[0] != EVENT_NULL) {
                pw.println("  Idling history:");
                long now = SystemClock.elapsedRealtime();
                for (int i=EVENT_BUFFER_SIZE-1; i>=0; i--) {
                    int cmd = mEventCmds[i];
                    if (cmd == EVENT_NULL) {
                        continue;
                    }
                    String label;
                    switch (mEventCmds[i]) {
                        case EVENT_NORMAL:              label = "     normal"; break;
                        case EVENT_LIGHT_IDLE:          label = " light-idle"; break;
                        case EVENT_LIGHT_MAINTENANCE:   label = "light-maint"; break;
                        case EVENT_DEEP_IDLE:           label = "  deep-idle"; break;
                        case EVENT_DEEP_MAINTENANCE:    label = " deep-maint"; break;
                        default:                        label = "         ??"; break;
                    }
                    pw.print("    ");
                    pw.print(label);
                    pw.print(": ");
                    TimeUtils.formatDuration(mEventTimes[i], now, pw);
                    if (mEventReasons[i] != null) {
                        pw.print(" (");
                        pw.print(mEventReasons[i]);
                        pw.print(")");
                    }
                    pw.println();

                }
            }

            int size = mPowerSaveWhitelistAppsExceptIdle.size();
            if (size > 0) {
                pw.println("  Whitelist (except idle) system apps:");
                for (int i = 0; i < size; i++) {
                    pw.print("    ");
                    pw.println(mPowerSaveWhitelistAppsExceptIdle.keyAt(i));
                }
            }
            size = mPowerSaveWhitelistApps.size();
            if (size > 0) {
                pw.println("  Whitelist system apps:");
                for (int i = 0; i < size; i++) {
                    pw.print("    ");
                    pw.println(mPowerSaveWhitelistApps.keyAt(i));
                }
            }
            size = mRemovedFromSystemWhitelistApps.size();
            if (size > 0) {
                pw.println("  Removed from whitelist system apps:");
                for (int i = 0; i < size; i++) {
                    pw.print("    ");
                    pw.println(mRemovedFromSystemWhitelistApps.keyAt(i));
                }
            }
            size = mPowerSaveWhitelistUserApps.size();
            if (size > 0) {
                pw.println("  Whitelist user apps:");
                for (int i = 0; i < size; i++) {
                    pw.print("    ");
                    pw.println(mPowerSaveWhitelistUserApps.keyAt(i));
                }
            }
            size = mPowerSaveWhitelistExceptIdleAppIds.size();
            if (size > 0) {
                pw.println("  Whitelist (except idle) all app ids:");
                for (int i = 0; i < size; i++) {
                    pw.print("    ");
                    pw.print(mPowerSaveWhitelistExceptIdleAppIds.keyAt(i));
                    pw.println();
                }
            }
            size = mPowerSaveWhitelistUserAppIds.size();
            if (size > 0) {
                pw.println("  Whitelist user app ids:");
                for (int i = 0; i < size; i++) {
                    pw.print("    ");
                    pw.print(mPowerSaveWhitelistUserAppIds.keyAt(i));
                    pw.println();
                }
            }
            size = mPowerSaveWhitelistAllAppIds.size();
            if (size > 0) {
                pw.println("  Whitelist all app ids:");
                for (int i = 0; i < size; i++) {
                    pw.print("    ");
                    pw.print(mPowerSaveWhitelistAllAppIds.keyAt(i));
                    pw.println();
                }
            }
            dumpTempWhitelistSchedule(pw, true);

            size = mTempWhitelistAppIdArray != null ? mTempWhitelistAppIdArray.length : 0;
            if (size > 0) {
                pw.println("  Temp whitelist app ids:");
                for (int i = 0; i < size; i++) {
                    pw.print("    ");
                    pw.print(mTempWhitelistAppIdArray[i]);
                    pw.println();
                }
            }

            pw.print("  mLightEnabled="); pw.print(mLightEnabled);
            pw.print("  mDeepEnabled="); pw.println(mDeepEnabled);
            pw.print("  mForceIdle="); pw.println(mForceIdle);
            pw.print("  mUseMotionSensor="); pw.print(mUseMotionSensor);
            if (mUseMotionSensor) {
                pw.print(" mMotionSensor="); pw.println(mMotionSensor);
            } else {
                pw.println();
            }
            pw.print("  mScreenOn="); pw.println(mScreenOn);
            pw.print("  mScreenLocked="); pw.println(mScreenLocked);
            pw.print("  mNetworkConnected="); pw.println(mNetworkConnected);
            pw.print("  mCharging="); pw.println(mCharging);
            if (mConstraints.size() != 0) {
                pw.println("  mConstraints={");
                for (int i = 0; i < mConstraints.size(); i++) {
                    final DeviceIdleConstraintTracker tracker = mConstraints.valueAt(i);
                    pw.print("    \""); pw.print(tracker.name); pw.print("\"=");
                    if (tracker.minState == mState) {
                        pw.println(tracker.active);
                    } else {
                        pw.print("ignored <mMinState="); pw.print(stateToString(tracker.minState));
                        pw.println(">");
                    }
                }
                pw.println("  }");
            }
            if (mUseMotionSensor || mStationaryListeners.size() > 0) {
                pw.print("  mMotionActive="); pw.println(mMotionListener.active);
                pw.print("  mNotMoving="); pw.println(mNotMoving);
                pw.print("  mMotionListener.activatedTimeElapsed=");
                pw.println(mMotionListener.activatedTimeElapsed);
                pw.print("  mLastMotionEventElapsed="); pw.println(mLastMotionEventElapsed);
                pw.print("  "); pw.print(mStationaryListeners.size());
                pw.println(" stationary listeners registered");
            }
            pw.print("  mLocating="); pw.print(mLocating); pw.print(" mHasGps=");
                    pw.print(mHasGps); pw.print(" mHasNetwork=");
                    pw.print(mHasNetworkLocation); pw.print(" mLocated="); pw.println(mLocated);
            if (mLastGenericLocation != null) {
                pw.print("  mLastGenericLocation="); pw.println(mLastGenericLocation);
            }
            if (mLastGpsLocation != null) {
                pw.print("  mLastGpsLocation="); pw.println(mLastGpsLocation);
            }
            pw.print("  mState="); pw.print(stateToString(mState));
            pw.print(" mLightState=");
            pw.println(lightStateToString(mLightState));
            pw.print("  mInactiveTimeout="); TimeUtils.formatDuration(mInactiveTimeout, pw);
            pw.println();
            if (mActiveIdleOpCount != 0) {
                pw.print("  mActiveIdleOpCount="); pw.println(mActiveIdleOpCount);
            }
            if (mNextAlarmTime != 0) {
                pw.print("  mNextAlarmTime=");
                TimeUtils.formatDuration(mNextAlarmTime, SystemClock.elapsedRealtime(), pw);
                pw.println();
            }
            if (mNextIdlePendingDelay != 0) {
                pw.print("  mNextIdlePendingDelay=");
                TimeUtils.formatDuration(mNextIdlePendingDelay, pw);
                pw.println();
            }
            if (mNextIdleDelay != 0) {
                pw.print("  mNextIdleDelay=");
                TimeUtils.formatDuration(mNextIdleDelay, pw);
                pw.println();
            }
            if (mNextLightIdleDelay != 0) {
                pw.print("  mNextIdleDelay=");
                TimeUtils.formatDuration(mNextLightIdleDelay, pw);
                pw.println();
            }
            if (mNextLightAlarmTime != 0) {
                pw.print("  mNextLightAlarmTime=");
                TimeUtils.formatDuration(mNextLightAlarmTime, SystemClock.elapsedRealtime(), pw);
                pw.println();
            }
            if (mCurLightIdleBudget != 0) {
                pw.print("  mCurLightIdleBudget=");
                TimeUtils.formatDuration(mCurLightIdleBudget, pw);
                pw.println();
            }
            if (mMaintenanceStartTime != 0) {
                pw.print("  mMaintenanceStartTime=");
                TimeUtils.formatDuration(mMaintenanceStartTime, SystemClock.elapsedRealtime(), pw);
                pw.println();
            }
            if (mJobsActive) {
                pw.print("  mJobsActive="); pw.println(mJobsActive);
            }
            if (mAlarmsActive) {
                pw.print("  mAlarmsActive="); pw.println(mAlarmsActive);
            }
            if (Math.abs(mPreIdleFactor - 1.0f) > MIN_PRE_IDLE_FACTOR_CHANGE) {
                pw.print("  mPreIdleFactor="); pw.println(mPreIdleFactor);
            }
        }
    }

    void dumpTempWhitelistSchedule(PrintWriter pw, boolean printTitle) {
        final int size = mTempWhitelistAppIdEndTimes.size();
        if (size > 0) {
            String prefix = "";
            if (printTitle) {
                pw.println("  Temp whitelist schedule:");
                prefix = "    ";
            }
            final long timeNow = SystemClock.elapsedRealtime();
            for (int i = 0; i < size; i++) {
                pw.print(prefix);
                pw.print("UID=");
                pw.print(mTempWhitelistAppIdEndTimes.keyAt(i));
                pw.print(": ");
                Pair<MutableLong, String> entry = mTempWhitelistAppIdEndTimes.valueAt(i);
                TimeUtils.formatDuration(entry.first.value, timeNow, pw);
                pw.print(" - ");
                pw.println(entry.second);
            }
        }
    }
 }