1//===- llvm/Support/Atomic.h - Atomic Operations -----------------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file declares the llvm::sys atomic operations. 11// 12//===----------------------------------------------------------------------===// 13 14#ifndef LLVM_SYSTEM_ATOMIC_H 15#define LLVM_SYSTEM_ATOMIC_H 16 17#include "llvm/Support/DataTypes.h" 18 19namespace llvm { 20 namespace sys { 21 void MemoryFence(); 22 23#ifdef _MSC_VER 24 typedef long cas_flag; 25#else 26 typedef uint32_t cas_flag; 27#endif 28 cas_flag CompareAndSwap(volatile cas_flag* ptr, 29 cas_flag new_value, 30 cas_flag old_value); 31 cas_flag AtomicIncrement(volatile cas_flag* ptr); 32 cas_flag AtomicDecrement(volatile cas_flag* ptr); 33 cas_flag AtomicAdd(volatile cas_flag* ptr, cas_flag val); 34 cas_flag AtomicMul(volatile cas_flag* ptr, cas_flag val); 35 cas_flag AtomicDiv(volatile cas_flag* ptr, cas_flag val); 36 } 37} 38 39#endif 40