1/*
2 * Copyright 2017-present Facebook, Inc.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#pragma once
18
19#include <atomic>
20
21namespace folly {
22namespace detail {
23
24inline std::memory_order default_failure_memory_order(
25 std::memory_order successMode) {
26 switch (successMode) {
27 case std::memory_order_acq_rel:
28 return std::memory_order_acquire;
29 case std::memory_order_release:
30 return std::memory_order_relaxed;
31 default:
32 return successMode;
33 }
34}
35
36inline char const* memory_order_to_str(std::memory_order mo) {
37 switch (mo) {
38 case std::memory_order_relaxed:
39 return "relaxed";
40 case std::memory_order_consume:
41 return "consume";
42 case std::memory_order_acquire:
43 return "acquire";
44 case std::memory_order_release:
45 return "release";
46 case std::memory_order_acq_rel:
47 return "acq_rel";
48 case std::memory_order_seq_cst:
49 return "seq_cst";
50 }
51}
52} // namespace detail
53} // namespace folly
54