diff options
| author | Stephen Hines <srhines@google.com> | 2019-07-02 16:25:20 -0700 |
|---|---|---|
| committer | Ali B <abittin@gmail.com> | 2019-07-05 19:33:16 +0300 |
| commit | 9afee4e65dc5f9f5eb371683729ff67b8df81d03 (patch) | |
| tree | 4cf241d6c9044f91ee8c06e6920174d06f8de0b6 /clang-r353983e/include/llvm/Support/Atomic.h | |
| parent | 2f19bd722c4c825320d1511c1ed83161b7f95d51 (diff) | |
clang 9.0.5 (based on r353983e) from build 5696680.
Bug: http://b/135931688
Bug: http://b/136008926
Test: N/A
Change-Id: I922d17410047d2e2df4625615352c588ee71b203
Diffstat (limited to 'clang-r353983e/include/llvm/Support/Atomic.h')
| -rw-r--r-- | clang-r353983e/include/llvm/Support/Atomic.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/clang-r353983e/include/llvm/Support/Atomic.h b/clang-r353983e/include/llvm/Support/Atomic.h new file mode 100644 index 00000000..a8445fdd --- /dev/null +++ b/clang-r353983e/include/llvm/Support/Atomic.h @@ -0,0 +1,42 @@ +//===- 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 |