DynamicMemoryManagerService: Use Wakelock to Prevent Suspend. (cda31b48) · Commits · e / os / android_frameworks_base

services/java/com/android/server/DynamicMemoryManagerService.java

+38 −15

Original line number	Diff line number	Diff line
		@@ -64,7 +64,8 @@ class DynamicMemoryManagerService {
		"com.android.server.DMMService.action.DPD_START";
		private static final String ACTION_DPD_STOP =
		"com.android.server.DMMService.action.DPD_STOP";

		private PowerManager.WakeLock mWakeLock = null;
		private final static String WAKELOCK_NAME = "DynamicMemoryManagerServiceLock";
		private final boolean DEBUG = false;

		public DynamicMemoryManagerService(Context context) {
		@@ -83,7 +84,8 @@ class DynamicMemoryManagerService {
		mStopPendingIntent = PendingIntent.getBroadcast(mContext, 0, mStopIntent, 0);
		mStartAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE);
		mStopAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE);

		PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
		mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, WAKELOCK_NAME);
		Log.w(TAG, "DynamicMemoryManager Service Initialized");
		}
		else
		@@ -290,6 +292,14 @@ class DynamicMemoryManagerService {

		private int enableUnstableMemory(boolean flag) {
		Log.w(TAG, "Enable Unstable Memory : " + flag);
		synchronized (mWakeLock) {
		try {
		mWakeLock.acquire();
		if (DEBUG) Log.w(TAG, "Wakelock " + WAKELOCK_NAME + " Acquired");
		}
		catch (Exception e) {
		Log.e(TAG, "Unable to Acquired Wakelock: " + WAKELOCK_NAME);
		}
		if (flag) {
		if(mState == DMM_MEM_STATE.DISABLED) {
		if(Power.SetUnstableMemoryState(flag) < 0)
		@@ -305,6 +315,19 @@ class DynamicMemoryManagerService {
		mState = DMM_MEM_STATE.DISABLED;
		}
		}
		try {
		if (mWakeLock.isHeld()) {
		mWakeLock.release();
		if (DEBUG) Log.w(TAG, "Wakelock " + WAKELOCK_NAME + " Released");
		}
		else {
		Log.e(TAG, "Error: Attempring to release unheld Wakelock: " + WAKELOCK_NAME);
		}
		}
		catch (Exception e) {
		Log.e(TAG, "Unable to release Wakelock: " + WAKELOCK_NAME);
		}
		}
		return 0;
		}
		}