4 files changed, 7 insertions, 4 deletions
diff --git a/libs/hwui/renderthread/CanvasContext.cpp b/libs/hwui/renderthread/CanvasContext.cpp
index b88f30e..260fb6f 100644
--- a/libs/hwui/renderthread/CanvasContext.cpp
+++ b/libs/hwui/renderthread/CanvasContext.cpp
@@ -160,7 +160,7 @@ static bool wasSkipped(FrameInfo* info) {
     return info && ((*info)[FrameInfoIndex::Flags] & FrameInfoFlags::SkippedFrame);
 }
 
-void CanvasContext::prepareTree(TreeInfo& info, int64_t* uiFrameInfo) {
+void CanvasContext::prepareTree(TreeInfo& info, int64_t* uiFrameInfo, int64_t syncQueued) {
     mRenderThread.removeFrameCallback(this);
 
     // If the previous frame was dropped we don't need to hold onto it, so
@@ -169,6 +169,7 @@ void CanvasContext::prepareTree(TreeInfo& info, int64_t* uiFrameInfo) {
         mCurrentFrameInfo = &mFrames.next();
     }
     mCurrentFrameInfo->importUiThreadInfo(uiFrameInfo);
+    mCurrentFrameInfo->set(FrameInfoIndex::SyncQueued) = syncQueued;
     mCurrentFrameInfo->markSyncStart();
 
     info.damageAccumulator = &mDamageAccumulator;
@@ -293,7 +294,7 @@ void CanvasContext::doFrame() {
                 mRenderThread.timeLord().latestVsync());
 
     TreeInfo info(TreeInfo::MODE_RT_ONLY, mRenderThread.renderState());
-    prepareTree(info, frameInfo);
+    prepareTree(info, frameInfo, systemTime(CLOCK_MONOTONIC));
     if (info.out.canDrawThisFrame) {
         draw();
     }
diff --git a/libs/hwui/renderthread/CanvasContext.h b/libs/hwui/renderthread/CanvasContext.h
index 10e66e9..f2fa9cd 100644
--- a/libs/hwui/renderthread/CanvasContext.h
+++ b/libs/hwui/renderthread/CanvasContext.h
@@ -78,7 +78,7 @@ public:
     void setOpaque(bool opaque);
     void makeCurrent();
     void processLayerUpdate(DeferredLayerUpdater* layerUpdater);
-    void prepareTree(TreeInfo& info, int64_t* uiFrameInfo);
+    void prepareTree(TreeInfo& info, int64_t* uiFrameInfo, int64_t syncQueued);
     void draw();
     void destroy();
 
diff --git a/libs/hwui/renderthread/DrawFrameTask.cpp b/libs/hwui/renderthread/DrawFrameTask.cpp
index 008e297..6507ce8 100644
--- a/libs/hwui/renderthread/DrawFrameTask.cpp
+++ b/libs/hwui/renderthread/DrawFrameTask.cpp
@@ -69,6 +69,7 @@ int DrawFrameTask::drawFrame() {
     LOG_ALWAYS_FATAL_IF(!mContext, "Cannot drawFrame with no CanvasContext!");
 
     mSyncResult = kSync_OK;
+    mSyncQueued = systemTime(CLOCK_MONOTONIC);
     postAndWait();
 
     return mSyncResult;
@@ -119,7 +120,7 @@ bool DrawFrameTask::syncFrameState(TreeInfo& info) {
         mContext->processLayerUpdate(mLayers[i].get());
     }
     mLayers.clear();
-    mContext->prepareTree(info, mFrameInfo);
+    mContext->prepareTree(info, mFrameInfo, mSyncQueued);
 
     // This is after the prepareTree so that any pending operations
     // (RenderNode tree state, prefetched layers, etc...) will be flushed.
diff --git a/libs/hwui/renderthread/DrawFrameTask.h b/libs/hwui/renderthread/DrawFrameTask.h
index 8039643..ebefcba 100644
--- a/libs/hwui/renderthread/DrawFrameTask.h
+++ b/libs/hwui/renderthread/DrawFrameTask.h
@@ -85,6 +85,7 @@ private:
     std::vector< sp<DeferredLayerUpdater> > mLayers;
 
     int mSyncResult;
+    int64_t mSyncQueued;
 
     int64_t mFrameInfo[UI_THREAD_FRAME_INFO_SIZE];
 };