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