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 
19 namespace __sanitizer {
20 
21 enum 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 
30 struct atomic_uint8_t {
31   typedef u8 Type;
32   volatile Type val_dont_use;
33 };
34 
35 struct atomic_uint16_t {
36   typedef u16 Type;
37   volatile Type val_dont_use;
38 };
39 
40 struct atomic_uint32_t {
41   typedef u32 Type;
42   volatile Type val_dont_use;
43 };
44 
45 struct 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 
51 struct atomic_uintptr_t {
52   typedef uptr Type;
53   volatile Type val_dont_use;
54 };
55 
56 }  // namespace __sanitizer
57 
58 #if 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 
66 #endif  // SANITIZER_ATOMIC_H
67