Bug 1501442 - Part 3: Add profiler markers for payload presentarion. r=mstange

--HG--
extra : rebase_source : 7b3eeb59ab8823c5ebb674b933d95d1501f86210

gfx/layers/Layers.cpp

@@ -154,6 +154,23 @@ UniquePtr<LayerUserData> LayerManager::RemoveUserData(void* aKey) {
   return d;
 }
 
+void LayerManager::PayloadPresented() {
+  if (mPayload.Length()) {
+    TimeStamp presented = TimeStamp::Now();
+    for (CompositionPayload& payload : mPayload) {
+#if MOZ_GECKO_PROFILER
+      if (profiler_is_active()) {
+        nsPrintfCString marker(
+            "Payload Presented, type: %d latency: %dms\n",
+            int32_t(payload.mType),
+            int32_t((presented - payload.mTimeStamp).ToMilliseconds()));
+        profiler_add_marker(marker.get());
+      }
+#endif
+    }
+  }
+}
+
 //--------------------------------------------------
 // Layer
 

gfx/layers/Layers.h

@@ -739,6 +739,7 @@ class LayerManager : public FrameRecorder {
     mPayload.AppendElements(aPayload);
     MOZ_ASSERT(mPayload.Length() < 10000);
   }
+  void PayloadPresented();
 
  protected:
   RefPtr<Layer> mRoot;

gfx/layers/composite/LayerManagerComposite.cpp

@@ -975,6 +975,9 @@ void LayerManagerComposite::Render(const nsIntRegion& aInvalidRegion,
   mProfilerScreenshotGrabber.MaybeProcessQueue();
 
   RecordFrame();
+
+  PayloadPresented();
+
   // Our payload has now been presented.
   mPayload.Clear();
 }

gfx/layers/mlgpu/LayerManagerMLGPU.cpp

@@ -305,6 +305,8 @@ void LayerManagerMLGPU::Composite() {
   mClonedLayerTreeProperties = nullptr;
   mClonedLayerTreeProperties = LayerProperties::CloneFrom(mRoot);
 
+  PayloadPresented();
+
   mPayload.Clear();
 }