Merge "frameworks/base: Fix to avoid UI freeze issue." (904b5248) · Commits · e / os / android_frameworks_base

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

+44 −0

Original line number	Diff line number	Diff line
		@@ -34,6 +34,10 @@ import android.view.SurfaceSession;
		import android.view.animation.Animation;
		import android.view.animation.AnimationUtils;
		import android.view.animation.Transformation;
		import android.os.Handler;
		import android.os.Message;
		import com.android.server.DisplayThread;
		import android.os.Looper;

		class ScreenRotationAnimation {
		static final String TAG = "ScreenRotationAnimation";
		@@ -130,6 +134,7 @@ class ScreenRotationAnimation {
		private boolean mMoreStartExit;
		private boolean mMoreStartFrame;
		long mHalfwayPoint;
		final H mHandler = new H(DisplayThread.get().getLooper());

		public void printTo(String prefix, PrintWriter pw) {
		pw.print(prefix); pw.print("mSurface="); pw.print(mSurfaceControl);
		@@ -269,6 +274,12 @@ class ScreenRotationAnimation {
		mSurfaceControl.setAlpha(0);
		mSurfaceControl.show();
		sur.destroy();
		// If screenshot layer stays for more than freeze
		// timeout value with no updates on the screen,
		// destroy the layer explicitly.
		mHandler.removeMessages(H.SCREENSHOT_FREEZE_TIMEOUT);
		mHandler.sendEmptyMessageDelayed(H.SCREENSHOT_FREEZE_TIMEOUT,
		H.FREEZE_TIMEOUT_VAL);
		} catch (OutOfResourcesException e) {
		Slog.w(TAG, "Unable to allocate freeze surface", e);
		}
		@@ -1007,4 +1018,37 @@ class ScreenRotationAnimation {
		public Transformation getEnterTransformation() {
		return mEnterTransformation;
		}

		final class H extends Handler {
		public static final int SCREENSHOT_FREEZE_TIMEOUT = 2;

		//Set the freeze timeout value to 6sec (which is greater than
		//APP_FREEZE_TIMEOUT value in WindowManagerService)
		public static final int FREEZE_TIMEOUT_VAL = 6000;

		public H(Looper looper) {
		super(looper, null, true /async/);
		}

		@Override
		public void handleMessage(Message msg) {
		switch (msg.what) {
		case SCREENSHOT_FREEZE_TIMEOUT: {
		if ((mSurfaceControl != null) && (isAnimating())) {
		Slog.e(TAG, "Exceeded Freeze timeout. Destroy layers");
		kill();
		} else if (mSurfaceControl != null){
		Slog.e(TAG,
		"No animation, exceeded freeze timeout. Destroy Screenshot layer");
		mSurfaceControl.destroy();
		mSurfaceControl = null;
		}
		break;
		}
		default:
		Slog.e(TAG, "No Valid Message To Handle");
		break;
		}
		}
		}
		}