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Commit 4a5ea0ec authored by Wu Ahan's avatar Wu Ahan Committed by Automerger Merge Worker
Browse files

Merge "Fix potential memory leak of FrameTracker" into sc-dev am: aef0db8f 

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15334110

Change-Id: I93c2f29eff492356d1618501450d2079eccf6aaf
parents 2a237b74 aef0db8f

core/java/com/android/internal/jank/FrameTracker.java

+1 −1
Original line number Diff line number Diff line
@@ -251,7 +251,7 @@ public class FrameTracker extends SurfaceControl.OnJankDataListener 
        // 2. The session never begun.

        if (mBeginVsyncId == INVALID_ID) {

            cancel(REASON_CANCEL_NOT_BEGUN);

        } else if (mEndVsyncId == mBeginVsyncId) {

        } else if (mEndVsyncId <= mBeginVsyncId) {

            cancel(REASON_CANCEL_SAME_VSYNC);

        } else {

            if (DEBUG) {

core/tests/coretests/src/com/android/internal/jank/FrameTrackerTest.java

+21 −8
Original line number Diff line number Diff line
@@ -257,21 +257,14 @@ public class FrameTrackerTest { 
    }



    @Test

    public void testRemoveObserversWhenCancelledInEnd() {

    public void testCancelIfEndVsyncIdEqualsToBeginVsyncId() {

        when(mChoreographer.getVsyncId()).thenReturn(100L);

        mTracker.begin();

        verify(mRenderer, only()).addObserver(any());



        // send first frame - not janky

        sendFrame(4, JANK_NONE, 100L);



        // send another frame - should be considered janky

        sendFrame(40, JANK_APP_DEADLINE_MISSED, 101L);



        // end the trace session

        when(mChoreographer.getVsyncId()).thenReturn(101L);

        mTracker.end(FrameTracker.REASON_END_NORMAL);

        sendFrame(4, JANK_NONE, 102L);



        // Since the begin vsync id (101) equals to the end vsync id (101), will be treat as cancel.

        verify(mTracker).cancel(FrameTracker.REASON_CANCEL_SAME_VSYNC);
@@ -283,6 +276,26 @@ public class FrameTrackerTest { 
        verify(mTracker, never()).triggerPerfetto();

    }



    @Test

    public void testCancelIfEndVsyncIdLessThanBeginVsyncId() {

        when(mChoreographer.getVsyncId()).thenReturn(100L);

        mTracker.begin();

        verify(mRenderer, only()).addObserver(any());



        // end the trace session at the same vsync id, end vsync id will less than the begin one.

        // Because the begin vsync id is supposed to the next frame,

        mTracker.end(FrameTracker.REASON_END_NORMAL);



        // The begin vsync id (101) is larger than the end one (100), will be treat as cancel.

        verify(mTracker).cancel(FrameTracker.REASON_CANCEL_SAME_VSYNC);



        // Observers should be removed in this case, or FrameTracker object will be leaked.

        verify(mTracker).removeObservers();



        // Should never trigger Perfetto since it is a cancel.

        verify(mTracker, never()).triggerPerfetto();

    }



    @Test

    public void testCancelWhenSessionNeverBegun() {

        mTracker.cancel(FrameTracker.REASON_CANCEL_NORMAL);

core/tests/coretests/src/com/android/internal/jank/InteractionJankMonitorTest.java

+4 −0
Original line number Diff line number Diff line
@@ -99,6 +99,8 @@ public class InteractionJankMonitorTest { 
                new FrameMetricsWrapper(), /*traceThresholdMissedFrames=*/ 1,

                /*traceThresholdFrameTimeMillis=*/ -1, null));

        doReturn(tracker).when(monitor).createFrameTracker(any(), any());

        doNothing().when(tracker).triggerPerfetto();

        doNothing().when(tracker).postTraceStartMarker();



        // Simulate a trace session and see if begin / end are invoked.

        assertThat(monitor.begin(mView, session.getCuj())).isTrue();
@@ -146,6 +148,8 @@ public class InteractionJankMonitorTest { 
                new FrameMetricsWrapper(), /*traceThresholdMissedFrames=*/ 1,

                /*traceThresholdFrameTimeMillis=*/ -1, null));

        doReturn(tracker).when(monitor).createFrameTracker(any(), any());

        doNothing().when(tracker).triggerPerfetto();

        doNothing().when(tracker).postTraceStartMarker();



        assertThat(monitor.begin(mView, session.getCuj())).isTrue();

        verify(tracker).begin();