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
17 namespace __sanitizer {
18
19 enum 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
28 struct atomic_uint8_t {
29 typedef u8 Type;
30 volatile Type val_dont_use;
31 };
32
33 struct atomic_uint16_t {
34 typedef u16 Type;
35 volatile Type val_dont_use;
36 };
37
38 struct atomic_sint32_t {
39 typedef s32 Type;
40 volatile Type val_dont_use;
41 };
42
43 struct atomic_uint32_t {
44 typedef u32 Type;
45 volatile Type val_dont_use;
46 };
47
48 struct 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
54 struct 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
69 namespace __sanitizer {
70
71 // Clutter-reducing helpers.
72
73 template<typename T>
atomic_load_relaxed(const volatile T * a)74 INLINE typename T::Type atomic_load_relaxed(const volatile T *a) {
75 return atomic_load(a, memory_order_relaxed);
76 }
77
78 template<typename T>
atomic_store_relaxed(volatile T * a,typename T::Type v)79 INLINE 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