#ifndef LLVM_SYSTEM_ATOMIC_H
#define LLVM_SYSTEM_ATOMIC_H
-#if defined(_MSC_VER)
-#include <windows.h>
-#endif
-
+#include "llvm/System/DataTypes.h"
namespace llvm {
namespace sys {
-
- inline void MemoryFence() {
-#if !defined(ENABLE_THREADS) || ENABLE_THREADS == 0
-# if defined(__GNUC__)
- __asm__ __volatile__("" : : : "memory");
-# elif defined(_MSC_VER)
- __asm { };
-# else
-# error No memory fence implementation for your platform!
-# endif
-#else
-# if defined(__GNUC__)
- __sync_synchronize();
-# elif defined(_MSC_VER)
- MemoryBarrier();
-# else
-# error No memory fence implementation for your platform!
-# endif
-#endif
-}
-
-#if !defined(ENABLE_THREADS) || ENABLE_THREADS == 0
- typedef unsigned long cas_flag;
- template<typename T>
- inline T CompareAndSwap(volatile T* dest,
- T exc, T c) {
- T result = *dest;
- if (result == c)
- *dest = exc;
- return result;
- }
-#elif defined(__GNUC__)
- typedef unsigned long cas_flag;
- template<typename T>
- inline T CompareAndSwap(volatile T* ptr,
- T new_value,
- T old_value) {
- return __sync_val_compare_and_swap(ptr, old_value, new_value);
- }
-#elif defined(_MSC_VER)
- typedef LONG cas_flag;
- template<typename T>
- inline T CompareAndSwap(volatile T* ptr,
- T new_value,
- T old_value) {
- if (sizeof(T) == 4)
- return InterlockedCompareExchange(ptr, new_value, old_value);
- else if (sizeof(T) == 8)
- return InterlockedCompareExchange64(ptr, new_value, old_value);
- else
- assert(0 && "Unsupported compare-and-swap size!");
- }
-
- template<typename T>
- inline T* CompareAndSwap<T*>(volatile T** ptr,
- T* new_value,
- T* old_value) {
- return InterlockedCompareExchangePtr(ptr, new_value, old_value);
- }
-
+ void MemoryFence();
+#ifdef _MSC_VER
+ typedef long cas_flag;
#else
-# error No compare-and-swap implementation for your 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);
}
}