cc: Check for completed raster tasks at interval.

cc/thread_proxy.cc

Index: cc/thread_proxy.cc
diff --git a/cc/thread_proxy.cc b/cc/thread_proxy.cc
index adb9d016d020f8acb2c046493c0daf03fb706fc4..73a943573bb0a9d5ab50204e622e2230d8a2584f 100644
--- a/cc/thread_proxy.cc
+++ b/cc/thread_proxy.cc
@@ -29,6 +29,9 @@ const double contextRecreationTickRate = 0.03;
 // Measured in seconds.
 const double smoothnessTakesPriorityExpirationDelay = 0.25;
 
+// Measured in seconds.
+const double checkForCompletedRasterTasksDelay = 0.004;
+
 }  // namespace
 
 namespace cc {
@@ -62,6 +65,7 @@ ThreadProxy::ThreadProxy(LayerTreeHost* layerTreeHost, scoped_ptr<Thread> implTh
     , m_totalCommitCount(0)
     , m_deferCommits(false)
     , m_renewTreePriorityOnImplThreadPending(false)
+    , m_checkForCompletedRasterTasksPending(false)
 {
     TRACE_EVENT0("cc", "ThreadProxy::ThreadProxy");
     DCHECK(isMainThread());
@@ -369,6 +373,24 @@ void ThreadProxy::manageTilesOnImplThread()
         m_layerTreeHostImpl->manageTiles();
 }
 
+void ThreadProxy::setNeedsCheckForCompletedRasterTasksOnImplThread()
+{

[brianderson, 2013/02/12 01:44:31]

DCHECK(isImplThread())?

[reveman, 2013/02/12 02:29:52]

Sure. I'll add that to setNeedsManageTilesOnImplThread() above too.

+     if (m_checkForCompletedRasterTasksPending)
+       return;
+    Proxy::implThread()->postDelayedTask(
+        base::Bind(&ThreadProxy::checkForCompletedRasterTasksOnImplThread,
+                   m_weakFactoryOnImplThread.GetWeakPtr()),
+        checkForCompletedRasterTasksDelay * 1000);
+    m_checkForCompletedRasterTasksPending = true;
+}
+
+void ThreadProxy::checkForCompletedRasterTasksOnImplThread()
+{

[brianderson, 2013/02/12 01:44:31]

DCHECK(isImplThread())?

[reveman, 2013/02/12 02:29:52]

Done.

+    m_checkForCompletedRasterTasksPending = false;
+    if (m_layerTreeHostImpl)
+        m_layerTreeHostImpl->checkForCompletedRasterTasks();
+}
+
 void ThreadProxy::setNeedsForcedCommitOnImplThread()
 {
     DCHECK(isImplThread());