Merge "Do not hold WM lock while closing animation transaction" into oc-dev (ab7eb6de) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/wm/WindowAnimator.java

+125 −109

Original line number	Diff line number	Diff line
		@@ -115,8 +115,8 @@ public class WindowAnimator {
		mAnimationTick = () -> {
		synchronized (mService.mWindowMap) {
		mAnimationTickScheduled = false;
		animateLocked(mCurrentFrameTime);
		}
		animate(mCurrentFrameTime);
		};
		mAnimationFrameCallback = frameTimeNs -> {
		synchronized (mService.mWindowMap) {
		@@ -126,8 +126,8 @@ public class WindowAnimator {
		return;
		}
		mAnimationTickScheduled = true;
		mSfChoreographer.scheduleAtSfVsync(mAnimationTick);
		}
		mSfChoreographer.scheduleAtSfVsync(mAnimationTick);
		};
		}

		@@ -151,25 +151,34 @@ public class WindowAnimator {
		mDisplayContentsAnimators.delete(displayId);
		}

		/** Locked on mService.mWindowMap. */
		private void animateLocked(long frameTimeNs) {
		/**
		* DO NOT HOLD THE WINDOW MANAGER LOCK WHILE CALLING THIS METHOD. Reason: the method closes
		* an animation transaction, that might be blocking until the next sf-vsync, so we want to make
		* sure other threads can make progress if this happens.
		*/
		private void animate(long frameTimeNs) {
		boolean transactionOpen = false;
		boolean wasAnimating = false;
		try {
		synchronized (mService.mWindowMap) {
		if (!mInitialized) {
		return;
		}

		mCurrentTime = frameTimeNs / TimeUtils.NANOS_PER_MS;
		mBulkUpdateParams = SET_ORIENTATION_CHANGE_COMPLETE;
		boolean wasAnimating = mAnimating;
		wasAnimating = mAnimating;
		setAnimating(false);
		mAppWindowAnimating = false;
		if (DEBUG_WINDOW_TRACE) {
		Slog.i(TAG, "!!! animate: entry time=" + mCurrentTime);
		}

		if (SHOW_TRANSACTIONS) Slog.i(TAG, ">>> OPEN TRANSACTION animateLocked");
		if (SHOW_TRANSACTIONS) Slog.i(TAG, ">>> OPEN TRANSACTION animate");
		mService.openSurfaceTransaction();
		transactionOpen = true;
		SurfaceControl.setAnimationTransaction();
		try {

		final AccessibilityController accessibilityController =
		mService.mAccessibilityController;
		final int numDisplays = mDisplayContentsAnimators.size();
		@@ -189,10 +198,11 @@ public class WindowAnimator {
		screenRotationAnimation.kill();
		displayAnimator.mScreenRotationAnimation = null;

		//TODO (multidisplay): Accessibility supported only for the default display.
		//TODO (multidisplay): Accessibility supported only for the default
		// display.
		if (accessibilityController != null && dc.isDefaultDisplay) {
		// We just finished rotation animation which means we did not announce
		// the rotation and waited for it to end, announce now.
		// We just finished rotation animation which means we did not
		// announce the rotation and waited for it to end, announce now.
		accessibilityController.onRotationChangedLocked(
		mService.getDefaultDisplayContentLocked());
		}
		@@ -238,13 +248,17 @@ public class WindowAnimator {
		if (mService.mWatermark != null) {
		mService.mWatermark.drawIfNeeded();
		}
		}
		} catch (RuntimeException e) {
		Slog.wtf(TAG, "Unhandled exception in Window Manager", e);
		} finally {
		if (transactionOpen) {
		mService.closeSurfaceTransaction();
		if (SHOW_TRANSACTIONS) Slog.i(TAG, "<<< CLOSE TRANSACTION animateLocked");
		if (SHOW_TRANSACTIONS) Slog.i(TAG, "<<< CLOSE TRANSACTION animate");
		}
		}

		synchronized (mService.mWindowMap) {
		boolean hasPendingLayoutChanges = mService.mRoot.hasPendingLayoutChanges(this);
		boolean doRequest = false;
		if (mBulkUpdateParams != 0) {
		@@ -257,8 +271,9 @@ public class WindowAnimator {

		if (mAnimating && !wasAnimating) {

		// Usually app transitions but quite a load onto the system already (with all the things
		// happening in app), so pause task snapshot persisting to not increase the load.
		// Usually app transitions but quite a load onto the system already (with all the
		// things happening in app), so pause task snapshot persisting to not increase the
		// load.
		mService.mTaskSnapshotController.setPersisterPaused(true);
		if (Trace.isTagEnabled(Trace.TRACE_TAG_WINDOW_MANAGER)) {
		Trace.asyncTraceBegin(Trace.TRACE_TAG_WINDOW_MANAGER, "animating", 0);
		@@ -289,6 +304,7 @@ public class WindowAnimator {
		+ Integer.toHexString(getPendingLayoutChanges(DEFAULT_DISPLAY)));
		}
		}
		}

		private static String bulkUpdateParamsToString(int bulkUpdateParams) {
		StringBuilder builder = new StringBuilder(128);