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[oota-llvm.git] / include / llvm / System / Atomic.h

diff --git a/include/llvm/System/Atomic.h b/include/llvm/System/Atomic.h
index 7db31d52dce0d56c2159aaa4aed45d163966b544..fc19369d11bdeb387f34ef02c741cea160736fad 100644 (file)
--- a/include/llvm/System/Atomic.h
+++ b/include/llvm/System/Atomic.h
@@ -11,35 +11,29 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/Config/config.h"
-
-#ifdef __APPLE__
-#include <libkern/OSAtomic.h>
-#elif LLVM_ON_WIN32
-#include <windows.h>
-#endif
-
-
 #ifndef LLVM_SYSTEM_ATOMIC_H
 #define LLVM_SYSTEM_ATOMIC_H
 
+#include "llvm/System/DataTypes.h"
+
 namespace llvm {
   namespace sys {
-    inline void MemoryFence() {
-#if !defined(ENABLE_THREADS) || ENABLE_THREADS == 0
-      return;
-#elif __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
-      __sync_synchronize();
-#elif defined(__APPLE__)
-      OSMemoryBarrier();
-#elif defined(LLVM_ON_WIN32)
-#warning Memory fence implementation requires Windows 2003 or later.
-      MemoryBarrier();
+    void MemoryFence();
+
+#ifdef _MSC_VER
+    typedef long cas_flag;
 #else
-#warning No memory fence implementation found for you platform!
+    typedef uint32_t cas_flag;
 #endif
-    }
+    cas_flag CompareAndSwap(volatile cas_flag* ptr,
+                            cas_flag new_value,
+                            cas_flag old_value);
+    cas_flag AtomicIncrement(volatile cas_flag* ptr);
+    cas_flag AtomicDecrement(volatile cas_flag* ptr);
+    cas_flag AtomicAdd(volatile cas_flag* ptr, cas_flag val);
+    cas_flag AtomicMul(volatile cas_flag* ptr, cas_flag val);
+    cas_flag AtomicDiv(volatile cas_flag* ptr, cas_flag val);
   }
 }
 
-#endif
\ No newline at end of file
+#endif