P4 to Git Change 1087847 by lmoriche@lmoriche_opencl_dev on 2014/10/15 17:33:42

EPR #407144 - Fixes an issue introduced by CL#1082950

Affected files ...

... //depot/stg/opencl/drivers/opencl/runtime/thread/semaphore.cpp#8 edit

rocclr/runtime/thread/semaphore.cpp

@@ -43,12 +43,14 @@ Semaphore::~Semaphore()
 void
 Semaphore::post()
 {
-    int state = state_;
+    int state = state_.load(std::memory_order_relaxed);
     for (;;) {
         if (state > 0) {
-            if (state == state_.load(std::memory_order_acquire)) {
+            int newstate = state_.load(std::memory_order_acquire);
+            if (state == newstate) {
                 return;
             }
+            state = newstate;
             continue;
         }
         if (state_.compare_exchange_weak(state, state+1,