From 07e7c983a1a13a2c355eef0089de638a987f232a Mon Sep 17 00:00:00 2001
From: Edwin Flores <eflores@mozilla.com>
Date: Wed, 23 Mar 2016 15:39:57 +0000
Subject: [PATCH] Bug 1244883 - Add Nightly-/Aurora-only crash for
 AsyncTransactionWaiter timeouts - r=nical

---
 gfx/2d/Logging.h                           | 1 +
 gfx/layers/ipc/AsyncTransactionTracker.cpp | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/gfx/2d/Logging.h b/gfx/2d/Logging.h
index da0534c8bdf0..1483f6802bd4 100644
--- a/gfx/2d/Logging.h
+++ b/gfx/2d/Logging.h
@@ -132,6 +132,7 @@ enum class LogReason : int {
   CannotDraw3D, // 20
   IncompatibleBasicTexturedEffect,
   InvalidFont,
+  AsyncTransactionTimeout,
   // End
   MustBeLessThanThis = 101,
 };
diff --git a/gfx/layers/ipc/AsyncTransactionTracker.cpp b/gfx/layers/ipc/AsyncTransactionTracker.cpp
index b72687282bae..776a01702f0f 100755
--- a/gfx/layers/ipc/AsyncTransactionTracker.cpp
+++ b/gfx/layers/ipc/AsyncTransactionTracker.cpp
@@ -34,6 +34,10 @@ AsyncTransactionWaiter::WaitComplete()
   if (mWaitCount > 0) {
     printf_stderr("Timeout of waiting transaction complete.");
   }
+
+  if (count == maxCount) {
+    gfxDevCrash(LogReason::AsyncTransactionTimeout) << "Bug 1244883: AsyncTransactionWaiter timed out.";
+  }
 }
 
 Atomic<uint64_t> AsyncTransactionTracker::sSerialCounter(0);