Add a way to measure potential framerate of the view hierarchy. (59a12cae) · Commits · e / os / android_frameworks_base

core/java/android/view/View.java

+2 −2

Original line number	Diff line number	Diff line
		@@ -9176,7 +9176,7 @@ public class View implements Drawable.Callback2, KeyEvent.Callback, Accessibilit
		mLocalDirtyRect.setEmpty();
		}

		Canvas currentCanvas = mAttachInfo.mHardwareCanvas;
		HardwareCanvas currentCanvas = mAttachInfo.mHardwareCanvas;
		final HardwareCanvas canvas = mHardwareLayer.start(currentCanvas);
		mAttachInfo.mHardwareCanvas = canvas;
		try {
		@@ -13054,7 +13054,7 @@ public class View implements Drawable.Callback2, KeyEvent.Callback, Accessibilit

		final Callbacks mRootCallbacks;

		Canvas mHardwareCanvas;
		HardwareCanvas mHardwareCanvas;

		/**
		* The top view of the hierarchy.

core/java/android/view/ViewAncestor.java

+56 −6

Original line number	Diff line number	Diff line
		@@ -46,6 +46,7 @@ import android.os.ParcelFileDescriptor;
		import android.os.Process;
		import android.os.RemoteException;
		import android.os.SystemClock;
		import android.os.SystemProperties;
		import android.util.AndroidRuntimeException;
		import android.util.DisplayMetrics;
		import android.util.EventLog;
		@@ -107,6 +108,12 @@ public final class ViewAncestor extends Handler implements ViewParent,
		private static final boolean DEBUG_CONFIGURATION = false \|\| LOCAL_LOGV;
		private static final boolean WATCH_POINTER = false;

		/**
		* Set this system property to true to force the view hierarchy to render
		* at 60 Hz. This can be used to measure the potential framerate.
		*/
		private static final String PROPERTY_PROFILE_RENDERING = "viewancestor.profile_rendering";

		private static final boolean MEASURE_LATENCY = false;
		private static LatencyTimer lt;

		@@ -251,6 +258,10 @@ public final class ViewAncestor extends Handler implements ViewParent,
		final PointF mDragPoint = new PointF();
		final PointF mLastTouchPoint = new PointF();

		private boolean mProfileRendering;
		private Thread mRenderProfiler;
		private volatile boolean mRenderProfilingEnabled;

		/**
		* see {@link #playSoundEffect(int)}
		*/
		@@ -325,6 +336,8 @@ public final class ViewAncestor extends Handler implements ViewParent,
		mViewConfiguration = ViewConfiguration.get(context);
		mDensity = context.getResources().getDisplayMetrics().densityDpi;
		mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context);
		mProfileRendering = Boolean.parseBoolean(
		SystemProperties.get(PROPERTY_PROFILE_RENDERING, "false"));
		}

		public static void addFirstDrawHandler(Runnable callback) {
		@@ -1595,11 +1608,45 @@ public final class ViewAncestor extends Handler implements ViewParent,
		*/
		void outputDisplayList(View view) {
		if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) {

		HardwareCanvas canvas = (HardwareCanvas) mAttachInfo.mHardwareCanvas;
		DisplayList displayList = view.getDisplayList();
		if (displayList != null) {
		canvas.outputDisplayList(displayList);
		mAttachInfo.mHardwareCanvas.outputDisplayList(displayList);
		}
		}
		}

		/**
		* @see #PROPERTY_PROFILE_RENDERING
		*/
		private void profileRendering(boolean enabled) {
		if (mProfileRendering) {
		mRenderProfilingEnabled = enabled;
		if (mRenderProfiler == null) {
		mRenderProfiler = new Thread(new Runnable() {
		@Override
		public void run() {
		Log.d(TAG, "Starting profiling thread");
		while (mRenderProfilingEnabled) {
		mAttachInfo.mHandler.post(new Runnable() {
		@Override
		public void run() {
		mDirty.set(0, 0, mWidth, mHeight);
		scheduleTraversals();
		}
		});
		try {
		// TODO: This should use vsync when we get an API
		Thread.sleep(15);
		} catch (InterruptedException e) {
		Log.d(TAG, "Exiting profiling thread");
		}
		}
		}
		}, "Rendering Profiler");
		mRenderProfiler.start();
		} else {
		mRenderProfiler.interrupt();
		mRenderProfiler = null;
		}
		}
		}
		@@ -2217,6 +2264,9 @@ public final class ViewAncestor extends Handler implements ViewParent,
		if (mAdded) {
		boolean hasWindowFocus = msg.arg1 != 0;
		mAttachInfo.mHasWindowFocus = hasWindowFocus;

		profileRendering(hasWindowFocus);

		if (hasWindowFocus) {
		boolean inTouchMode = msg.arg2 != 0;
		ensureTouchModeLocally(inTouchMode);