commit c95616357a911e5c1c55873492b05ebfa3cf1894
author Haynes Mathew George <hgeorge@codeaurora.org> Tue Dec 03 21:26:02 2013 -0800
committer Eric Laurent <elaurent@google.com> Tue Dec 17 22:05:51 2013 +0000
tree fa56f9fbc01da9bfca3814af80c63e7857bfa2fd
parent 645e43977d3aabc5addab022d772accc32fd5bdc

audioflinger: check for condition before waiting

AsyncCallbackThread must check for any condition that
has already been satisfied before waiting.

Bug: 11824817
Change-Id: Ic8c2090d521ecd6a30b76ee75635258d35eb1eff

services/audioflinger/Threads.cpp

diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 45926b4..2f71db7 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -3861,7 +3861,12 @@
 
         {
             Mutex::Autolock _l(mLock);
-            mWaitWorkCV.wait(mLock);
+            while (!((mWriteAckSequence & 1) ||
+                     (mDrainSequence & 1) ||
+                     exitPending())) {
+                mWaitWorkCV.wait(mLock);
+            }
+
             if (exitPending()) {
                 break;
             }