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