Merge "Hold a wake lock while dozing when display updates are pending." into lmp-mr1-modular-dev (c0c39516) · Commits · e / os / android_frameworks_base

core/java/android/os/PowerManager.java

+15 −0

Original line number	Diff line number	Diff line
		@@ -204,6 +204,20 @@ public final class PowerManager {
		*/
		public static final int DOZE_WAKE_LOCK = 0x00000040;

		/**
		* Wake lock level: Keep the device awake enough to allow drawing to occur.
		* <p>
		* This is used by the window manager to allow applications to draw while the
		* system is dozing. It currently has no effect unless the power manager is in
		* the dozing state.
		* </p><p>
		* Requires the {@link android.Manifest.permission#DEVICE_POWER} permission.
		* </p>
		*
		* {@hide}
		*/
		public static final int DRAW_WAKE_LOCK = 0x00000080;

		/**
		* Mask for the wake lock level component of a combined wake lock level and flags integer.
		*
		@@ -489,6 +503,7 @@ public final class PowerManager {
		case FULL_WAKE_LOCK:
		case PROXIMITY_SCREEN_OFF_WAKE_LOCK:
		case DOZE_WAKE_LOCK:
		case DRAW_WAKE_LOCK:
		break;
		default:
		throw new IllegalArgumentException("Must specify a valid wake lock level.");

+15 −0

Original line number	Diff line number	Diff line
		@@ -197,4 +197,19 @@ interface IWindowSession {
		void onRectangleOnScreenRequested(IBinder token, in Rect rectangle);

		IWindowId getWindowId(IBinder window);

		/**
		* When the system is dozing in a low-power partially suspended state, pokes a short
		* lived wake lock and ensures that the display is ready to accept the next frame
		* of content drawn in the window.
		*
		* This mechanism is bound to the window rather than to the display manager or the
		* power manager so that the system can ensure that the window is actually visible
		* and prevent runaway applications from draining the battery. This is similar to how
		* FLAG_KEEP_SCREEN_ON works.
		*
		* This method is synchronous because it may need to acquire a wake lock before returning.
		* The assumption is that this method will be called rather infrequently.
		*/
		void pokeDrawLock(IBinder window);
		}

+16 −0

Original line number	Diff line number	Diff line
		@@ -47,6 +47,7 @@ import android.os.Handler;
		import android.os.Looper;
		import android.os.Message;
		import android.os.ParcelFileDescriptor;
		import android.os.PowerManager;
		import android.os.Process;
		import android.os.RemoteException;
		import android.os.SystemClock;
		@@ -831,6 +832,7 @@ public final class ViewRootImpl implements ViewParent,
		final int newDisplayState = mDisplay.getState();
		if (oldDisplayState != newDisplayState) {
		mAttachInfo.mDisplayState = newDisplayState;
		pokeDrawLockIfNeeded();
		if (oldDisplayState != Display.STATE_UNKNOWN) {
		final int oldScreenState = toViewScreenState(oldDisplayState);
		final int newScreenState = toViewScreenState(newDisplayState);
		@@ -861,6 +863,19 @@ public final class ViewRootImpl implements ViewParent,
		}
		};

		void pokeDrawLockIfNeeded() {
		final int displayState = mAttachInfo.mDisplayState;
		if (mView != null && mAdded && mTraversalScheduled
		&& (displayState == Display.STATE_DOZE
		\|\| displayState == Display.STATE_DOZE_SUSPEND)) {
		try {
		mWindowSession.pokeDrawLock(mWindow);
		} catch (RemoteException ex) {
		// System server died, oh well.
		}
		}
		}

		@Override
		public void requestFitSystemWindows() {
		checkThread();
		@@ -1035,6 +1050,7 @@ public final class ViewRootImpl implements ViewParent,
		scheduleConsumeBatchedInput();
		}
		notifyRendererOfFramePending();
		pokeDrawLockIfNeeded();
		}
		}

+6 −0

Original line number	Diff line number	Diff line
		@@ -1844,6 +1844,12 @@
		<item>users</item>
		</string-array>

		<!-- Number of milliseconds to hold a wake lock to ensure that drawing is fully
		flushed to the display while dozing. This value needs to be large enough
		to account for processing and rendering time plus a frame or two of latency
		in the display pipeline plus some slack just to be sure. -->
		<integer name="config_drawLockTimeoutMillis">120</integer>

		<!-- default telephony hardware configuration for this platform.
		-->
		<!-- this string array should be overridden by the device to present a list

+1 −0

Original line number	Diff line number	Diff line
		@@ -345,6 +345,7 @@
		<java-symbol type="integer" name="config_bluetooth_max_advertisers" />
		<java-symbol type="integer" name="config_bluetooth_max_scan_filters" />
		<java-symbol type="integer" name="config_cursorWindowSize" />
		<java-symbol type="integer" name="config_drawLockTimeoutMillis" />
		<java-symbol type="integer" name="config_doublePressOnPowerBehavior" />
		<java-symbol type="integer" name="config_extraFreeKbytesAdjust" />
		<java-symbol type="integer" name="config_extraFreeKbytesAbsolute" />