Merge pull request #6 from nmcclatchey/improve-vista-performance

Fix infinite loop for mutexes in Windows XP and Vista.
meganz · Apr 29, 2018 · 3b716a7 · 3b716a7
2 parents 07125e6 + 902f06e
commit 3b716a7
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/mingw.mutex.h b/mingw.mutex.h
@@ -278,7 +278,10 @@ class mutex
                 break;
             }
             if (state == 1)
+            {
                 this_thread::yield();
+                state = mState.load(std::memory_order_acquire);
+            }
         }
 #ifndef STDMUTEX_NO_RECURSION_CHECKS
         DWORD self = mOwnerThread.checkOwnerBeforeLock();