1218885Sdim//===- llvm/Support/Atomic.h - Atomic Operations -----------------*- C++ -*-===// 2218885Sdim// 3218885Sdim// The LLVM Compiler Infrastructure 4218885Sdim// 5218885Sdim// This file is distributed under the University of Illinois Open Source 6218885Sdim// License. See LICENSE.TXT for details. 7218885Sdim// 8218885Sdim//===----------------------------------------------------------------------===// 9218885Sdim// 10218885Sdim// This file declares the llvm::sys atomic operations. 11218885Sdim// 12218885Sdim//===----------------------------------------------------------------------===// 13218885Sdim 14249423Sdim#ifndef LLVM_SUPPORT_ATOMIC_H 15249423Sdim#define LLVM_SUPPORT_ATOMIC_H 16218885Sdim 17218885Sdim#include "llvm/Support/DataTypes.h" 18218885Sdim 19218885Sdimnamespace llvm { 20218885Sdim namespace sys { 21218885Sdim void MemoryFence(); 22218885Sdim 23218885Sdim#ifdef _MSC_VER 24218885Sdim typedef long cas_flag; 25218885Sdim#else 26218885Sdim typedef uint32_t cas_flag; 27218885Sdim#endif 28218885Sdim cas_flag CompareAndSwap(volatile cas_flag* ptr, 29218885Sdim cas_flag new_value, 30218885Sdim cas_flag old_value); 31218885Sdim cas_flag AtomicIncrement(volatile cas_flag* ptr); 32218885Sdim cas_flag AtomicDecrement(volatile cas_flag* ptr); 33218885Sdim cas_flag AtomicAdd(volatile cas_flag* ptr, cas_flag val); 34218885Sdim cas_flag AtomicMul(volatile cas_flag* ptr, cas_flag val); 35218885Sdim cas_flag AtomicDiv(volatile cas_flag* ptr, cas_flag val); 36218885Sdim } 37218885Sdim} 38218885Sdim 39218885Sdim#endif 40