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