зеркало из https://github.com/mozilla/gecko-dev.git
Bug 1240622 - Guard mCheckerboardEvent with a mutex to avoid races. r=botond
--HG-- extra : commitid : 9LLumoyfORc
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e60fcbe3af
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2398798d67
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@ -862,7 +862,8 @@ AsyncPanZoomController::AsyncPanZoomController(uint64_t aLayersId,
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mInputQueue(aInputQueue),
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mAPZCId(sAsyncPanZoomControllerCount++),
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mSharedLock(nullptr),
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mAsyncTransformAppliedToContent(false)
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mAsyncTransformAppliedToContent(false),
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mCheckerboardEventLock("APZCBELock")
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{
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if (aGestures == USE_GESTURE_DETECTOR) {
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mGestureEventListener = new GestureEventListener(this);
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@ -2871,13 +2872,16 @@ AsyncPanZoomController::RequestContentRepaint(const FrameMetrics& aFrameMetrics,
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}
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APZC_LOG_FM(aFrameMetrics, "%p requesting content repaint", this);
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if (mCheckerboardEvent && mCheckerboardEvent->IsRecordingTrace()) {
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std::stringstream info;
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info << " velocity " << aVelocity;
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std::string str = info.str();
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mCheckerboardEvent->UpdateRendertraceProperty(
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CheckerboardEvent::RequestedDisplayPort, GetDisplayPortRect(aFrameMetrics),
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str);
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{ // scope lock
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MutexAutoLock lock(mCheckerboardEventLock);
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if (mCheckerboardEvent && mCheckerboardEvent->IsRecordingTrace()) {
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std::stringstream info;
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info << " velocity " << aVelocity;
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std::string str = info.str();
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mCheckerboardEvent->UpdateRendertraceProperty(
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CheckerboardEvent::RequestedDisplayPort, GetDisplayPortRect(aFrameMetrics),
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str);
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}
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}
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controller->RequestContentRepaint(aFrameMetrics);
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@ -2981,11 +2985,14 @@ bool AsyncPanZoomController::AdvanceAnimations(const TimeStamp& aSampleTime)
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requestAnimationFrame = UpdateAnimation(aSampleTime, &deferredTasks);
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if (mCheckerboardEvent) {
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mCheckerboardEvent->UpdateRendertraceProperty(
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CheckerboardEvent::UserVisible,
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CSSRect(mFrameMetrics.GetScrollOffset(),
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mFrameMetrics.CalculateCompositedSizeInCssPixels()));
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{ // scope lock
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MutexAutoLock lock(mCheckerboardEventLock);
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if (mCheckerboardEvent) {
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mCheckerboardEvent->UpdateRendertraceProperty(
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CheckerboardEvent::UserVisible,
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CSSRect(mFrameMetrics.GetScrollOffset(),
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mFrameMetrics.CalculateCompositedSizeInCssPixels()));
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}
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}
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}
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@ -3106,10 +3113,12 @@ AsyncPanZoomController::ReportCheckerboard(const TimeStamp& aSampleTime)
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bool recordTrace = gfxPrefs::APZRecordCheckerboarding();
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bool forTelemetry = Telemetry::CanRecordExtended();
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uint32_t magnitude = GetCheckerboardMagnitude();
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MutexAutoLock lock(mCheckerboardEventLock);
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if (!mCheckerboardEvent && (recordTrace || forTelemetry)) {
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mCheckerboardEvent = MakeUnique<CheckerboardEvent>(recordTrace);
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}
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uint32_t magnitude = GetCheckerboardMagnitude();
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if (magnitude) {
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mPotentialCheckerboardTracker.CheckerboardSeen();
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}
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@ -3168,36 +3177,39 @@ void AsyncPanZoomController::NotifyLayersUpdated(const FrameMetrics& aLayerMetri
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APZC_LOG_FM(aLayerMetrics, "%p got a NotifyLayersUpdated with aIsFirstPaint=%d, aThisLayerTreeUpdated=%d",
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this, aIsFirstPaint, aThisLayerTreeUpdated);
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if (mCheckerboardEvent && mCheckerboardEvent->IsRecordingTrace()) {
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std::string str;
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if (aThisLayerTreeUpdated) {
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if (!aLayerMetrics.GetPaintRequestTime().IsNull()) {
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// Note that we might get the paint request time as non-null, but with
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// aThisLayerTreeUpdated false. That can happen if we get a layer transaction
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// from a different process right after we get the layer transaction with
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// aThisLayerTreeUpdated == true. In this case we want to ignore the
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// paint request time because it was already dumped in the previous layer
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// transaction.
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TimeDuration paintTime = TimeStamp::Now() - aLayerMetrics.GetPaintRequestTime();
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std::stringstream info;
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info << " painttime " << paintTime.ToMilliseconds();
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str = info.str();
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} else {
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// This might be indicative of a wasted paint particularly if it happens
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// during a checkerboard event.
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str = " (this layertree updated)";
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{ // scope lock
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MutexAutoLock lock(mCheckerboardEventLock);
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if (mCheckerboardEvent && mCheckerboardEvent->IsRecordingTrace()) {
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std::string str;
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if (aThisLayerTreeUpdated) {
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if (!aLayerMetrics.GetPaintRequestTime().IsNull()) {
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// Note that we might get the paint request time as non-null, but with
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// aThisLayerTreeUpdated false. That can happen if we get a layer transaction
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// from a different process right after we get the layer transaction with
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// aThisLayerTreeUpdated == true. In this case we want to ignore the
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// paint request time because it was already dumped in the previous layer
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// transaction.
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TimeDuration paintTime = TimeStamp::Now() - aLayerMetrics.GetPaintRequestTime();
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std::stringstream info;
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info << " painttime " << paintTime.ToMilliseconds();
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str = info.str();
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} else {
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// This might be indicative of a wasted paint particularly if it happens
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// during a checkerboard event.
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str = " (this layertree updated)";
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}
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}
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}
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mCheckerboardEvent->UpdateRendertraceProperty(
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CheckerboardEvent::Page, aLayerMetrics.GetScrollableRect());
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mCheckerboardEvent->UpdateRendertraceProperty(
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CheckerboardEvent::PaintedDisplayPort,
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aLayerMetrics.GetDisplayPort() + aLayerMetrics.GetScrollOffset(),
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str);
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if (!aLayerMetrics.GetCriticalDisplayPort().IsEmpty()) {
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mCheckerboardEvent->UpdateRendertraceProperty(
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CheckerboardEvent::PaintedCriticalDisplayPort,
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aLayerMetrics.GetCriticalDisplayPort() + aLayerMetrics.GetScrollOffset());
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CheckerboardEvent::Page, aLayerMetrics.GetScrollableRect());
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mCheckerboardEvent->UpdateRendertraceProperty(
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CheckerboardEvent::PaintedDisplayPort,
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aLayerMetrics.GetDisplayPort() + aLayerMetrics.GetScrollOffset(),
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str);
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if (!aLayerMetrics.GetCriticalDisplayPort().IsEmpty()) {
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mCheckerboardEvent->UpdateRendertraceProperty(
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CheckerboardEvent::PaintedCriticalDisplayPort,
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aLayerMetrics.GetCriticalDisplayPort() + aLayerMetrics.GetScrollOffset());
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}
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}
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}
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@ -1102,6 +1102,8 @@ private:
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* recording.
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*/
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private:
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// Mutex protecting mCheckerboardEvent
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Mutex mCheckerboardEventLock;
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// This is created when this APZC instance is first included as part of a
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// composite. If a checkerboard event takes place, this is destroyed at the
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// end of the event, and a new one is created on the next composite.
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