1 files changed, 8 insertions, 1 deletions
diff --git a/libs/hwui/renderthread/CanvasContext.h b/libs/hwui/renderthread/CanvasContext.h
index a6eb7adc3568..3eef29b24473 100644
--- a/libs/hwui/renderthread/CanvasContext.h
+++ b/libs/hwui/renderthread/CanvasContext.h
@@ -180,6 +180,8 @@ private:
 
     void waitOnFences();
 
+    bool isSwapChainStuffed();
+
     EGLint mLastFrameWidth = 0;
     EGLint mLastFrameHeight = 0;
 
@@ -198,12 +200,17 @@ private:
     struct SwapHistory {
         SkRect damage;
         nsecs_t vsyncTime;
-        nsecs_t swapTime;
+        nsecs_t swapCompletedTime;
+        nsecs_t dequeueDuration;
+        nsecs_t queueDuration;
     };
 
     RingBuffer<SwapHistory, 3> mSwapHistory;
     int64_t mFrameNumber = -1;
 
+    // last vsync for a dropped frame due to stuffed queue
+    nsecs_t mLastDropVsync = 0;
+
     bool mOpaque;
 #if HWUI_NEW_OPS
     BakedOpRenderer::LightInfo mLightInfo;