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.cpp

diff --git a/services/surfaceflinger/SurfaceFlingerConsumer.cpp b/services/surfaceflinger/SurfaceFlingerConsumer.cpp
index 4c80fa0..c71b3bc 100644
--- a/services/surfaceflinger/SurfaceFlingerConsumer.cpp
+++ b/services/surfaceflinger/SurfaceFlingerConsumer.cpp
@@ -190,6 +190,7 @@
 #ifdef USE_HWC2
 void SurfaceFlingerConsumer::setReleaseFence(const sp<Fence>& fence)
 {
+    mPrevReleaseFence = fence;
     if (!mPendingRelease.isPending) {
         GLConsumer::setReleaseFence(fence);
         return;
@@ -219,8 +220,17 @@
             strerror(-result), result);
     mPendingRelease = PendingRelease();
 }
+#else
+void SurfaceFlingerConsumer::setReleaseFence(const sp<Fence>& fence) {
+    mPrevReleaseFence = fence;
+    GLConsumer::setReleaseFence(fence);
+}
 #endif
 
+sp<Fence> SurfaceFlingerConsumer::getPrevReleaseFence() const {
+    return mPrevReleaseFence;
+}
+
 void SurfaceFlingerConsumer::setContentsChangedListener(
         const wp<ContentsChangedListener>& listener) {
     setFrameAvailableListener(listener);