commit 40845df1285b387bcbf8f43ac72228eee2606d80
author Pablo Ceballos <pceballos@google.com> Mon Jan 25 17:41:15 2016 -0800
committer Pablo Ceballos <pceballos@google.com> Mon Mar 21 16:06:17 2016 -0700
tree 013720a404ed609b96d59a3e02f53dc36c122e1b
parent b49576d5241859a3cf03c9f34b8030ad25d3806b

SF: Add FenceTracker

FenceTracker tracks all fences in SurfaceFlinger. These timestamps
could be used for debugging, profiling, or be exposed to the
application.

Change-Id: I4297a661c0a7530e744168ac7a2a66c4bca92fd5

services/surfaceflinger/SurfaceFlingerConsumer.h

diff --git a/services/surfaceflinger/SurfaceFlingerConsumer.h b/services/surfaceflinger/SurfaceFlingerConsumer.h
index f40d53e..51b002f 100644
--- a/services/surfaceflinger/SurfaceFlingerConsumer.h
+++ b/services/surfaceflinger/SurfaceFlingerConsumer.h
@@ -37,7 +37,8 @@
     SurfaceFlingerConsumer(const sp<IGraphicBufferConsumer>& consumer,
             uint32_t tex)
         : GLConsumer(consumer, tex, GLConsumer::TEXTURE_EXTERNAL, false, false),
-          mTransformToDisplayInverse(false), mSurfaceDamage()
+          mTransformToDisplayInverse(false), mSurfaceDamage(),
+          mPrevReleaseFence(Fence::NO_FENCE)
     {}
 
     class BufferRejecter {
@@ -75,8 +76,9 @@
 
     nsecs_t computeExpectedPresent(const DispSync& dispSync);
 
-#ifdef USE_HWC2
     virtual void setReleaseFence(const sp<Fence>& fence) override;
+    sp<Fence> getPrevReleaseFence() const;
+#ifdef USE_HWC2
     void releasePendingBuffer();
 #endif
 
@@ -98,6 +100,9 @@
     // presentDisplay
     PendingRelease mPendingRelease;
 #endif
+
+    // The release fence of the already displayed buffer (previous frame).
+    sp<Fence> mPrevReleaseFence;
 };
 
 // ----------------------------------------------------------------------------