1//===-- sanitizer_atomic.h --------------------------------------*- C++ -*-===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8// 9// This file is a part of ThreadSanitizer/AddressSanitizer runtime. 10// 11//===----------------------------------------------------------------------===// 12 13#ifndef SANITIZER_ATOMIC_H 14#define SANITIZER_ATOMIC_H 15 16#include "sanitizer_internal_defs.h" 17 18namespace __sanitizer { 19 20enum memory_order { 21 memory_order_relaxed = 1 << 0, 22 memory_order_consume = 1 << 1, 23 memory_order_acquire = 1 << 2, 24 memory_order_release = 1 << 3, 25 memory_order_acq_rel = 1 << 4, 26 memory_order_seq_cst = 1 << 5 27}; 28 29struct atomic_uint8_t { 30 typedef u8 Type; 31 volatile Type val_dont_use; 32}; 33 34struct atomic_uint16_t { 35 typedef u16 Type; 36 volatile Type val_dont_use; 37}; 38 39struct atomic_sint32_t { 40 typedef s32 Type; 41 volatile Type val_dont_use; 42}; 43 44struct atomic_uint32_t { 45 typedef u32 Type; 46 volatile Type val_dont_use; 47}; 48 49struct atomic_uint64_t { 50 typedef u64 Type; 51 // On 32-bit platforms u64 is not necessary aligned on 8 bytes. 52 volatile ALIGNED(8) Type val_dont_use; 53}; 54 55struct atomic_uintptr_t { 56 typedef uptr Type; 57 volatile Type val_dont_use; 58}; 59 60} // namespace __sanitizer 61 62#if defined(__clang__) || defined(__GNUC__) 63# include "sanitizer_atomic_clang.h" 64#elif defined(_MSC_VER) 65# include "sanitizer_atomic_msvc.h" 66#else 67# error "Unsupported compiler" 68#endif 69 70namespace __sanitizer { 71 72// Clutter-reducing helpers. 73 74template<typename T> 75inline typename T::Type atomic_load_relaxed(const volatile T *a) { 76 return atomic_load(a, memory_order_relaxed); 77} 78 79template<typename T> 80inline void atomic_store_relaxed(volatile T *a, typename T::Type v) { 81 atomic_store(a, v, memory_order_relaxed); 82} 83 84} // namespace __sanitizer 85 86#endif // SANITIZER_ATOMIC_H 87