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 | |
21 | namespace folly { |
22 | namespace detail { |
23 | |
24 | inline 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 | |
36 | inline 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 |