Using hardware canvas for profiling Views (c1043207) · Commits · e / os / android_frameworks_base

core/java/android/view/ViewDebug.java

+79 −88

Original line number	Diff line number	Diff line
		@@ -528,18 +528,43 @@ public class ViewDebug {
		/** @hide */
		public static void profileViewAndChildren(final View view, BufferedWriter out)
		throws IOException {
		profileViewAndChildren(view, out, true);
		RenderNode node = RenderNode.create("ViewDebug", null);
		profileViewAndChildren(view, node, out, true);
		node.destroy();
		}

		private static void profileViewAndChildren(final View view, BufferedWriter out, boolean root)
		throws IOException {

		private static void profileViewAndChildren(View view, RenderNode node, BufferedWriter out,
		boolean root) throws IOException {
		long durationMeasure =
		(root \|\| (view.mPrivateFlags & View.PFLAG_MEASURED_DIMENSION_SET) != 0)
		? profileViewOperation(view, new ViewOperation<Void>() {
		public Void[] pre() {
		? profileViewMeasure(view) : 0;
		long durationLayout =
		(root \|\| (view.mPrivateFlags & View.PFLAG_LAYOUT_REQUIRED) != 0)
		? profileViewLayout(view) : 0;
		long durationDraw =
		(root \|\| !view.willNotDraw() \|\| (view.mPrivateFlags & View.PFLAG_DRAWN) != 0)
		? profileViewDraw(view, node) : 0;

		out.write(String.valueOf(durationMeasure));
		out.write(' ');
		out.write(String.valueOf(durationLayout));
		out.write(' ');
		out.write(String.valueOf(durationDraw));
		out.newLine();
		if (view instanceof ViewGroup) {
		ViewGroup group = (ViewGroup) view;
		final int count = group.getChildCount();
		for (int i = 0; i < count; i++) {
		profileViewAndChildren(group.getChildAt(i), node, out, false);
		}
		}
		}

		private static long profileViewMeasure(final View view) {
		return profileViewOperation(view, new ViewOperation() {
		@Override
		public void pre() {
		forceLayout(view);
		return null;
		}

		private void forceLayout(View view) {
		@@ -553,98 +578,64 @@ public class ViewDebug {
		}
		}

		public void run(Void... data) {
		@Override
		public void run() {
		view.measure(view.mOldWidthMeasureSpec, view.mOldHeightMeasureSpec);
		}

		public void post(Void... data) {
		}
		})
		: 0;
		long durationLayout =
		(root \|\| (view.mPrivateFlags & View.PFLAG_LAYOUT_REQUIRED) != 0)
		? profileViewOperation(view, new ViewOperation<Void>() {
		public Void[] pre() {
		return null;
		}

		public void run(Void... data) {
		view.layout(view.mLeft, view.mTop, view.mRight, view.mBottom);
		});
		}

		public void post(Void... data) {
		}
		}) : 0;
		long durationDraw =
		(root \|\| !view.willNotDraw() \|\| (view.mPrivateFlags & View.PFLAG_DRAWN) != 0)
		? profileViewOperation(view, new ViewOperation<Object>() {
		public Object[] pre() {
		final DisplayMetrics metrics =
		(view != null && view.getResources() != null) ?
		view.getResources().getDisplayMetrics() : null;
		final Bitmap bitmap = metrics != null ?
		Bitmap.createBitmap(metrics, metrics.widthPixels,
		metrics.heightPixels, Bitmap.Config.RGB_565) : null;
		final Canvas canvas = bitmap != null ? new Canvas(bitmap) : null;
		return new Object[] {
		bitmap, canvas
		};
		private static long profileViewLayout(View view) {
		return profileViewOperation(view,
		() -> view.layout(view.mLeft, view.mTop, view.mRight, view.mBottom));
		}

		public void run(Object... data) {
		if (data[1] != null) {
		view.draw((Canvas) data[1]);
		}
		private static long profileViewDraw(View view, RenderNode node) {
		DisplayMetrics dm = view.getResources().getDisplayMetrics();
		if (dm == null) {
		return 0;
		}

		public void post(Object... data) {
		if (data[1] != null) {
		((Canvas) data[1]).setBitmap(null);
		}
		if (data[0] != null) {
		((Bitmap) data[0]).recycle();
		}
		if (view.isHardwareAccelerated()) {
		DisplayListCanvas canvas = node.start(dm.widthPixels, dm.heightPixels);
		try {
		return profileViewOperation(view, () -> view.draw(canvas));
		} finally {
		node.end(canvas);
		}
		}) : 0;
		out.write(String.valueOf(durationMeasure));
		out.write(' ');
		out.write(String.valueOf(durationLayout));
		out.write(' ');
		out.write(String.valueOf(durationDraw));
		out.newLine();
		if (view instanceof ViewGroup) {
		ViewGroup group = (ViewGroup) view;
		final int count = group.getChildCount();
		for (int i = 0; i < count; i++) {
		profileViewAndChildren(group.getChildAt(i), out, false);
		} else {
		Bitmap bitmap = Bitmap.createBitmap(
		dm, dm.widthPixels, dm.heightPixels, Bitmap.Config.RGB_565);
		Canvas canvas = new Canvas(bitmap);
		try {
		return profileViewOperation(view, () -> view.draw(canvas));
		} finally {
		canvas.setBitmap(null);
		bitmap.recycle();
		}
		}
		}

		interface ViewOperation<T> {
		T[] pre();
		void run(T... data);
		void post(T... data);
		interface ViewOperation {
		default void pre() {}

		void run();
		}

		private static <T> long profileViewOperation(View view, final ViewOperation<T> operation) {
		private static long profileViewOperation(View view, final ViewOperation operation) {
		final CountDownLatch latch = new CountDownLatch(1);
		final long[] duration = new long[1];

		view.post(new Runnable() {
		public void run() {
		view.post(() -> {
		try {
		T[] data = operation.pre();
		operation.pre();
		long start = Debug.threadCpuTimeNanos();
		//noinspection unchecked
		operation.run(data);
		operation.run();
		duration[0] = Debug.threadCpuTimeNanos() - start;
		//noinspection unchecked
		operation.post(data);
		} finally {
		latch.countDown();
		}
		}
		});

		try {