Move power HAL interactions to PowerManagerService.
This refactoring sets the stage for a follow-on change that
will make use additional functions of the power HAL.
Moved functionality from android.os.Power into PowerManagerService.
None of these functions make sense being called outside of the
system server. Moving them to the PowerManagerService makes it
easier to ensure that the power HAL is initialized exactly once.
Similarly, moved ShutdownThread out of the policy package and into
the services package where it can tie into the PowerManagerService
as needed.
Bug: 6435382
Change-Id: I958241bb124fb4410d96f5d5eb00ed68d60b29e5
diff --git a/services/java/com/android/server/pm/ShutdownThread.java b/services/java/com/android/server/pm/ShutdownThread.java
new file mode 100644
index 0000000..1d6e068
--- /dev/null
+++ b/services/java/com/android/server/pm/ShutdownThread.java
@@ -0,0 +1,485 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+package com.android.server.pm;
+
+import android.app.ActivityManagerNative;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.app.IActivityManager;
+import android.app.ProgressDialog;
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.IBluetooth;
+import android.nfc.NfcAdapter;
+import android.nfc.INfcAdapter;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.os.Handler;
+import android.os.PowerManager;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.os.SystemClock;
+import android.os.SystemProperties;
+import android.os.Vibrator;
+import android.os.SystemVibrator;
+import android.os.storage.IMountService;
+import android.os.storage.IMountShutdownObserver;
+
+import com.android.internal.telephony.ITelephony;
+import com.android.server.PowerManagerService;
+
+import android.util.Log;
+import android.view.WindowManager;
+
+public final class ShutdownThread extends Thread {
+ // constants
+ private static final String TAG = "ShutdownThread";
+ private static final int MAX_NUM_PHONE_STATE_READS = 24;
+ private static final int PHONE_STATE_POLL_SLEEP_MSEC = 500;
+ // maximum time we wait for the shutdown broadcast before going on.
+ private static final int MAX_BROADCAST_TIME = 10*1000;
+ private static final int MAX_SHUTDOWN_WAIT_TIME = 20*1000;
+
+ // length of vibration before shutting down
+ private static final int SHUTDOWN_VIBRATE_MS = 500;
+
+ // state tracking
+ private static Object sIsStartedGuard = new Object();
+ private static boolean sIsStarted = false;
+
+ private static boolean mReboot;
+ private static boolean mRebootSafeMode;
+ private static String mRebootReason;
+
+ // Provides shutdown assurance in case the system_server is killed
+ public static final String SHUTDOWN_ACTION_PROPERTY = "sys.shutdown.requested";
+
+ // Indicates whether we are rebooting into safe mode
+ public static final String REBOOT_SAFEMODE_PROPERTY = "persist.sys.safemode";
+
+ // static instance of this thread
+ private static final ShutdownThread sInstance = new ShutdownThread();
+
+ private final Object mActionDoneSync = new Object();
+ private boolean mActionDone;
+ private Context mContext;
+ private PowerManager mPowerManager;
+ private PowerManager.WakeLock mCpuWakeLock;
+ private PowerManager.WakeLock mScreenWakeLock;
+ private Handler mHandler;
+
+ private ShutdownThread() {
+ }
+
+ /**
+ * Request a clean shutdown, waiting for subsystems to clean up their
+ * state etc. Must be called from a Looper thread in which its UI
+ * is shown.
+ *
+ * @param context Context used to display the shutdown progress dialog.
+ * @param confirm true if user confirmation is needed before shutting down.
+ */
+ public static void shutdown(final Context context, boolean confirm) {
+ mReboot = false;
+ mRebootSafeMode = false;
+ shutdownInner(context, confirm);
+ }
+
+ static void shutdownInner(final Context context, boolean confirm) {
+ // ensure that only one thread is trying to power down.
+ // any additional calls are just returned
+ synchronized (sIsStartedGuard) {
+ if (sIsStarted) {
+ Log.d(TAG, "Request to shutdown already running, returning.");
+ return;
+ }
+ }
+
+ final int longPressBehavior = context.getResources().getInteger(
+ com.android.internal.R.integer.config_longPressOnPowerBehavior);
+ final int resourceId = mRebootSafeMode
+ ? com.android.internal.R.string.reboot_safemode_confirm
+ : (longPressBehavior == 2
+ ? com.android.internal.R.string.shutdown_confirm_question
+ : com.android.internal.R.string.shutdown_confirm);
+
+ Log.d(TAG, "Notifying thread to start shutdown longPressBehavior=" + longPressBehavior);
+
+ if (confirm) {
+ final CloseDialogReceiver closer = new CloseDialogReceiver(context);
+ final AlertDialog dialog = new AlertDialog.Builder(context)
+ .setTitle(mRebootSafeMode
+ ? com.android.internal.R.string.reboot_safemode_title
+ : com.android.internal.R.string.power_off)
+ .setMessage(resourceId)
+ .setPositiveButton(com.android.internal.R.string.yes, new DialogInterface.OnClickListener() {
+ public void onClick(DialogInterface dialog, int which) {
+ beginShutdownSequence(context);
+ }
+ })
+ .setNegativeButton(com.android.internal.R.string.no, null)
+ .create();
+ closer.dialog = dialog;
+ dialog.setOnDismissListener(closer);
+ dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);
+ dialog.show();
+ } else {
+ beginShutdownSequence(context);
+ }
+ }
+
+ private static class CloseDialogReceiver extends BroadcastReceiver
+ implements DialogInterface.OnDismissListener {
+ private Context mContext;
+ public Dialog dialog;
+
+ CloseDialogReceiver(Context context) {
+ mContext = context;
+ IntentFilter filter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
+ context.registerReceiver(this, filter);
+ }
+
+ @Override
+ public void onReceive(Context context, Intent intent) {
+ dialog.cancel();
+ }
+
+ public void onDismiss(DialogInterface unused) {
+ mContext.unregisterReceiver(this);
+ }
+ }
+
+ /**
+ * Request a clean shutdown, waiting for subsystems to clean up their
+ * state etc. Must be called from a Looper thread in which its UI
+ * is shown.
+ *
+ * @param context Context used to display the shutdown progress dialog.
+ * @param reason code to pass to the kernel (e.g. "recovery"), or null.
+ * @param confirm true if user confirmation is needed before shutting down.
+ */
+ public static void reboot(final Context context, String reason, boolean confirm) {
+ mReboot = true;
+ mRebootSafeMode = false;
+ mRebootReason = reason;
+ shutdownInner(context, confirm);
+ }
+
+ /**
+ * Request a reboot into safe mode. Must be called from a Looper thread in which its UI
+ * is shown.
+ *
+ * @param context Context used to display the shutdown progress dialog.
+ * @param confirm true if user confirmation is needed before shutting down.
+ */
+ public static void rebootSafeMode(final Context context, boolean confirm) {
+ mReboot = true;
+ mRebootSafeMode = true;
+ mRebootReason = null;
+ shutdownInner(context, confirm);
+ }
+
+ private static void beginShutdownSequence(Context context) {
+ synchronized (sIsStartedGuard) {
+ if (sIsStarted) {
+ Log.d(TAG, "Shutdown sequence already running, returning.");
+ return;
+ }
+ sIsStarted = true;
+ }
+
+ // throw up an indeterminate system dialog to indicate radio is
+ // shutting down.
+ ProgressDialog pd = new ProgressDialog(context);
+ pd.setTitle(context.getText(com.android.internal.R.string.power_off));
+ pd.setMessage(context.getText(com.android.internal.R.string.shutdown_progress));
+ pd.setIndeterminate(true);
+ pd.setCancelable(false);
+ pd.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);
+
+ pd.show();
+
+ sInstance.mContext = context;
+ sInstance.mPowerManager = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
+
+ // make sure we never fall asleep again
+ sInstance.mCpuWakeLock = null;
+ try {
+ sInstance.mCpuWakeLock = sInstance.mPowerManager.newWakeLock(
+ PowerManager.PARTIAL_WAKE_LOCK, TAG + "-cpu");
+ sInstance.mCpuWakeLock.setReferenceCounted(false);
+ sInstance.mCpuWakeLock.acquire();
+ } catch (SecurityException e) {
+ Log.w(TAG, "No permission to acquire wake lock", e);
+ sInstance.mCpuWakeLock = null;
+ }
+
+ // also make sure the screen stays on for better user experience
+ sInstance.mScreenWakeLock = null;
+ if (sInstance.mPowerManager.isScreenOn()) {
+ try {
+ sInstance.mScreenWakeLock = sInstance.mPowerManager.newWakeLock(
+ PowerManager.FULL_WAKE_LOCK, TAG + "-screen");
+ sInstance.mScreenWakeLock.setReferenceCounted(false);
+ sInstance.mScreenWakeLock.acquire();
+ } catch (SecurityException e) {
+ Log.w(TAG, "No permission to acquire wake lock", e);
+ sInstance.mScreenWakeLock = null;
+ }
+ }
+
+ // start the thread that initiates shutdown
+ sInstance.mHandler = new Handler() {
+ };
+ sInstance.start();
+ }
+
+ void actionDone() {
+ synchronized (mActionDoneSync) {
+ mActionDone = true;
+ mActionDoneSync.notifyAll();
+ }
+ }
+
+ /**
+ * Makes sure we handle the shutdown gracefully.
+ * Shuts off power regardless of radio and bluetooth state if the alloted time has passed.
+ */
+ public void run() {
+ boolean nfcOff;
+ boolean bluetoothOff;
+ boolean radioOff;
+
+ BroadcastReceiver br = new BroadcastReceiver() {
+ @Override public void onReceive(Context context, Intent intent) {
+ // We don't allow apps to cancel this, so ignore the result.
+ actionDone();
+ }
+ };
+
+ /*
+ * Write a system property in case the system_server reboots before we
+ * get to the actual hardware restart. If that happens, we'll retry at
+ * the beginning of the SystemServer startup.
+ */
+ {
+ String reason = (mReboot ? "1" : "0") + (mRebootReason != null ? mRebootReason : "");
+ SystemProperties.set(SHUTDOWN_ACTION_PROPERTY, reason);
+ }
+
+ /*
+ * If we are rebooting into safe mode, write a system property
+ * indicating so.
+ */
+ if (mRebootSafeMode) {
+ SystemProperties.set(REBOOT_SAFEMODE_PROPERTY, "1");
+ }
+
+ Log.i(TAG, "Sending shutdown broadcast...");
+
+ // First send the high-level shut down broadcast.
+ mActionDone = false;
+ mContext.sendOrderedBroadcast(new Intent(Intent.ACTION_SHUTDOWN), null,
+ br, mHandler, 0, null, null);
+
+ final long endTime = SystemClock.elapsedRealtime() + MAX_BROADCAST_TIME;
+ synchronized (mActionDoneSync) {
+ while (!mActionDone) {
+ long delay = endTime - SystemClock.elapsedRealtime();
+ if (delay <= 0) {
+ Log.w(TAG, "Shutdown broadcast timed out");
+ break;
+ }
+ try {
+ mActionDoneSync.wait(delay);
+ } catch (InterruptedException e) {
+ }
+ }
+ }
+
+ Log.i(TAG, "Shutting down activity manager...");
+
+ final IActivityManager am =
+ ActivityManagerNative.asInterface(ServiceManager.checkService("activity"));
+ if (am != null) {
+ try {
+ am.shutdown(MAX_BROADCAST_TIME);
+ } catch (RemoteException e) {
+ }
+ }
+
+ final INfcAdapter nfc =
+ INfcAdapter.Stub.asInterface(ServiceManager.checkService("nfc"));
+ final ITelephony phone =
+ ITelephony.Stub.asInterface(ServiceManager.checkService("phone"));
+ final IBluetooth bluetooth =
+ IBluetooth.Stub.asInterface(ServiceManager.checkService(
+ BluetoothAdapter.BLUETOOTH_SERVICE));
+ final IMountService mount =
+ IMountService.Stub.asInterface(
+ ServiceManager.checkService("mount"));
+
+ try {
+ nfcOff = nfc == null ||
+ nfc.getState() == NfcAdapter.STATE_OFF;
+ if (!nfcOff) {
+ Log.w(TAG, "Turning off NFC...");
+ nfc.disable(false); // Don't persist new state
+ }
+ } catch (RemoteException ex) {
+ Log.e(TAG, "RemoteException during NFC shutdown", ex);
+ nfcOff = true;
+ }
+
+ try {
+ bluetoothOff = bluetooth == null ||
+ bluetooth.getBluetoothState() == BluetoothAdapter.STATE_OFF;
+ if (!bluetoothOff) {
+ Log.w(TAG, "Disabling Bluetooth...");
+ bluetooth.disable(false); // disable but don't persist new state
+ }
+ } catch (RemoteException ex) {
+ Log.e(TAG, "RemoteException during bluetooth shutdown", ex);
+ bluetoothOff = true;
+ }
+
+ try {
+ radioOff = phone == null || !phone.isRadioOn();
+ if (!radioOff) {
+ Log.w(TAG, "Turning off radio...");
+ phone.setRadio(false);
+ }
+ } catch (RemoteException ex) {
+ Log.e(TAG, "RemoteException during radio shutdown", ex);
+ radioOff = true;
+ }
+
+ Log.i(TAG, "Waiting for NFC, Bluetooth and Radio...");
+
+ // Wait a max of 32 seconds for clean shutdown
+ for (int i = 0; i < MAX_NUM_PHONE_STATE_READS; i++) {
+ if (!bluetoothOff) {
+ try {
+ bluetoothOff =
+ bluetooth.getBluetoothState() == BluetoothAdapter.STATE_OFF;
+ } catch (RemoteException ex) {
+ Log.e(TAG, "RemoteException during bluetooth shutdown", ex);
+ bluetoothOff = true;
+ }
+ }
+ if (!radioOff) {
+ try {
+ radioOff = !phone.isRadioOn();
+ } catch (RemoteException ex) {
+ Log.e(TAG, "RemoteException during radio shutdown", ex);
+ radioOff = true;
+ }
+ }
+ if (!nfcOff) {
+ try {
+ nfcOff = nfc.getState() == NfcAdapter.STATE_OFF;
+ } catch (RemoteException ex) {
+ Log.e(TAG, "RemoteException during NFC shutdown", ex);
+ nfcOff = true;
+ }
+ }
+
+ if (radioOff && bluetoothOff && nfcOff) {
+ Log.i(TAG, "NFC, Radio and Bluetooth shutdown complete.");
+ break;
+ }
+ SystemClock.sleep(PHONE_STATE_POLL_SLEEP_MSEC);
+ }
+
+ // Shutdown MountService to ensure media is in a safe state
+ IMountShutdownObserver observer = new IMountShutdownObserver.Stub() {
+ public void onShutDownComplete(int statusCode) throws RemoteException {
+ Log.w(TAG, "Result code " + statusCode + " from MountService.shutdown");
+ actionDone();
+ }
+ };
+
+ Log.i(TAG, "Shutting down MountService");
+ // Set initial variables and time out time.
+ mActionDone = false;
+ final long endShutTime = SystemClock.elapsedRealtime() + MAX_SHUTDOWN_WAIT_TIME;
+ synchronized (mActionDoneSync) {
+ try {
+ if (mount != null) {
+ mount.shutdown(observer);
+ } else {
+ Log.w(TAG, "MountService unavailable for shutdown");
+ }
+ } catch (Exception e) {
+ Log.e(TAG, "Exception during MountService shutdown", e);
+ }
+ while (!mActionDone) {
+ long delay = endShutTime - SystemClock.elapsedRealtime();
+ if (delay <= 0) {
+ Log.w(TAG, "Shutdown wait timed out");
+ break;
+ }
+ try {
+ mActionDoneSync.wait(delay);
+ } catch (InterruptedException e) {
+ }
+ }
+ }
+
+ rebootOrShutdown(mReboot, mRebootReason);
+ }
+
+ /**
+ * Do not call this directly. Use {@link #reboot(Context, String, boolean)}
+ * or {@link #shutdown(Context, boolean)} instead.
+ *
+ * @param reboot true to reboot or false to shutdown
+ * @param reason reason for reboot
+ */
+ public static void rebootOrShutdown(boolean reboot, String reason) {
+ if (reboot) {
+ Log.i(TAG, "Rebooting, reason: " + reason);
+ try {
+ PowerManagerService.lowLevelReboot(reason);
+ } catch (Exception e) {
+ Log.e(TAG, "Reboot failed, will attempt shutdown instead", e);
+ }
+ } else if (SHUTDOWN_VIBRATE_MS > 0) {
+ // vibrate before shutting down
+ Vibrator vibrator = new SystemVibrator();
+ try {
+ vibrator.vibrate(SHUTDOWN_VIBRATE_MS);
+ } catch (Exception e) {
+ // Failure to vibrate shouldn't interrupt shutdown. Just log it.
+ Log.w(TAG, "Failed to vibrate during shutdown.", e);
+ }
+
+ // vibrator is asynchronous so we need to wait to avoid shutting down too soon.
+ try {
+ Thread.sleep(SHUTDOWN_VIBRATE_MS);
+ } catch (InterruptedException unused) {
+ }
+ }
+
+ // Shutdown power
+ Log.i(TAG, "Performing low-level shutdown...");
+ PowerManagerService.lowLevelShutdown();
+ }
+}