aboutsummaryrefslogtreecommitdiffstats
path: root/contrib/libs/llvm14/include/llvm/Support/Atomic.h
blob: 90cc634249bf7e6f5e209b89be65d8d35b9fa2d8 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
#pragma once

#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
#endif

//===- llvm/Support/Atomic.h - Atomic Operations -----------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file declares the llvm::sys atomic operations.
//
// DO NOT USE IN NEW CODE!
//
// New code should always rely on the std::atomic facilities in C++11.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_SUPPORT_ATOMIC_H
#define LLVM_SUPPORT_ATOMIC_H

#include "llvm/Support/DataTypes.h"

// Windows will at times define MemoryFence.
#ifdef MemoryFence
#undef MemoryFence
#endif

namespace llvm {
  namespace sys {
    void MemoryFence();

#ifdef _MSC_VER
    typedef long cas_flag;
#else
    typedef uint32_t cas_flag;
#endif
    cas_flag CompareAndSwap(volatile cas_flag* ptr,
                            cas_flag new_value,
                            cas_flag old_value);
  }
}

#endif

#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif