Force the GPU process to reschedule itself after a timeout so it responds to IPCs.

BUG=111514
Review URL: https://chromiumcodereview.appspot.com/9295021

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@119504 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 12 insertions, 0 deletions

diff --git a/gpu/command_buffer/service/gpu_scheduler.h b/gpu/command_buffer/service/gpu_scheduler.h
index 46afc60..7a7bdff 100644
--- a/gpu/command_buffer/service/gpu_scheduler.h
+++ b/gpu/command_buffer/service/gpu_scheduler.h
@@ -75,6 +75,10 @@ class GpuScheduler
   // by them and returns whether all fences were complete.
   bool PollUnscheduleFences();
 
+  // Artificially reschedule if the scheduler is still unscheduled after a
+  // timeout.
+  void RescheduleTimeOut();
+
   // The GpuScheduler holds a weak reference to the CommandBuffer. The
   // CommandBuffer owns the GpuScheduler and holds a strong reference to it
   // through the ProcessCommands callback.
@@ -96,6 +100,14 @@ class GpuScheduler
   // Greater than zero if this is waiting to be rescheduled before continuing.
   int unscheduled_count_;
 
+  // The number of times this scheduler has been artificially rescheduled on
+  // account of a timeout.
+  int rescheduled_count_;
+
+  // A factory for outstanding rescheduling tasks that is invalidated whenever
+  // the scheduler is rescheduled.
+  base::WeakPtrFactory<GpuScheduler> reschedule_task_factory_;
+
   // The GpuScheduler will unschedule itself in the event that further GL calls
   // are issued to it before all these fences have been crossed by the GPU.
   struct UnscheduleFence {