Merge "Add WM API to start and stop transcation trace" (94aa4944) · Commits · e / os / android_frameworks_base

core/java/android/view/IWindowManager.aidl

+5 −0

Original line number	Diff line number	Diff line
		@@ -748,6 +748,11 @@ interface IWindowManager
		*/
		void setLayerTracingFlags(int flags);

		/**
		* Toggle active SurfaceFlinger transaction tracing.
		*/
		void setActiveTransactionTracing(boolean active);

		/**
		* Forwards a scroll capture request to the appropriate window, if available.
		*

+35 −0

Original line number	Diff line number	Diff line
		@@ -8783,6 +8783,41 @@ public class WindowManagerService extends IWindowManager.Stub
		}
		}

		/**
		* Toggle active transaction tracing.
		* Setting to true increases the buffer size for active debugging.
		* Setting to false resets the buffer size and dumps the trace to file.
		*/
		public void setActiveTransactionTracing(boolean active) {
		if (!checkCallingPermission(
		android.Manifest.permission.DUMP, "setActiveTransactionTracing()")) {
		throw new SecurityException("Requires DUMP permission");
		}

		final long token = Binder.clearCallingIdentity();
		try {
		Parcel data = null;
		try {
		IBinder sf = ServiceManager.getService("SurfaceFlinger");
		if (sf != null) {
		data = Parcel.obtain();
		data.writeInterfaceToken("android.ui.ISurfaceComposer");
		data.writeInt(active ? 1 : 0);
		sf.transact(/* TRANSACTION_TRACE_CONTROL_CODE */ 1041, data,
		null, 0 /* flags */);
		}
		} catch (RemoteException e) {
		Slog.e(TAG, "Failed to set transaction tracing");
		} finally {
		if (data != null) {
		data.recycle();
		}
		}
		} finally {
		Binder.restoreCallingIdentity(token);
		}
		}

		@Override
		public boolean mirrorDisplay(int displayId, SurfaceControl outSurfaceControl) {
		if (!checkCallingPermission(READ_FRAME_BUFFER, "mirrorDisplay()")) {