Fix threading issues
Bug: 25584167
Change-Id: I413ef9e0c86f7cca1f7d085e0071745ca0192853
diff --git a/libs/hwui/renderthread/RenderThread.cpp b/libs/hwui/renderthread/RenderThread.cpp
index 526a848..9fb30c9 100644
--- a/libs/hwui/renderthread/RenderThread.cpp
+++ b/libs/hwui/renderthread/RenderThread.cpp
@@ -25,7 +25,9 @@
#include <gui/ISurfaceComposer.h>
#include <gui/SurfaceComposerClient.h>
#include <sys/resource.h>
+#include <utils/Condition.h>
#include <utils/Log.h>
+#include <utils/Mutex.h>
namespace android {
namespace uirenderer {
@@ -325,10 +327,16 @@
}
void RenderThread::queueAndWait(RenderTask* task) {
- SignalingRenderTask syncTask(task, &mSyncMutex, &mSyncCondition);
- AutoMutex _lock(mSyncMutex);
+ // These need to be local to the thread to avoid the Condition
+ // signaling the wrong thread. The easiest way to achieve that is to just
+ // make this on the stack, although that has a slight cost to it
+ Mutex mutex;
+ Condition condition;
+ SignalingRenderTask syncTask(task, &mutex, &condition);
+
+ AutoMutex _lock(mutex);
queue(&syncTask);
- mSyncCondition.wait(mSyncMutex);
+ condition.wait(mutex);
}
void RenderThread::queueAtFront(RenderTask* task) {