From fa93cb7d0ba3bcd587ca5dd6bfaa0a6f083cb2b7 Mon Sep 17 00:00:00 2001
From: Dmitry Babokin <babokin@gmail.com>
Date: Mon, 29 Jul 2013 22:46:36 -0700
Subject: [PATCH] InterlockedAdd -> InterlockedExchangeAdd for better
 portability (InterlockedAdd is not always supported)

---
 examples/tasksys.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/tasksys.cpp b/examples/tasksys.cpp
index b4ced5c7..c9c2fa7b 100644
--- a/examples/tasksys.cpp
+++ b/examples/tasksys.cpp
@@ -365,7 +365,7 @@ lAtomicCompareAndSwap32(volatile int32_t *v, int32_t newValue, int32_t oldValue)
 static inline int32_t 
 lAtomicAdd(volatile int32_t *v, int32_t delta) {
 #ifdef ISPC_IS_WINDOWS
-    return InterlockedAdd((volatile LONG *)v, delta);
+    return InterlockedExchangeAdd((volatile LONG *)v, delta)+delta;
 #else
     return __sync_fetch_and_add(v, delta);
 #endif