1// Copyright (C) 2013 The Libphonenumber Authors
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15// Author: Philippe Liard
16
17#ifndef I18N_PHONENUMBERS_BASE_THREAD_CHECKER_H_
18#define I18N_PHONENUMBERS_BASE_THREAD_CHECKER_H_
19
20#if !defined(I18N_PHONENUMBERS_USE_BOOST)
21
22// Note that I18N_PHONENUMBERS_NO_THREAD_SAFETY must be defined only to let the
23// user of the library know that it can't be used in a thread-safe manner when
24// it is not depending on Boost.
25#if !defined(__linux__) && !defined(__APPLE__) && \
26    !defined(I18N_PHONENUMBERS_NO_THREAD_SAFETY)
27#error Building without Boost, please provide \
28       -DI18N_PHONENUMBERS_NO_THREAD_SAFETY
29#endif
30
31#endif
32
33#if !defined(NDEBUG) && !defined(I18N_PHONENUMBERS_USE_BOOST) && \
34    (defined(__linux__) || defined(__apple__))
35
36#include <pthread.h>
37
38namespace i18n {
39namespace phonenumbers {
40
41class ThreadChecker {
42 public:
43  ThreadChecker() : thread_id_(pthread_self()) {}
44
45  bool CalledOnValidThread() const {
46    return thread_id_ == pthread_self();
47  }
48
49 private:
50  const pthread_t thread_id_;
51};
52
53#else
54
55namespace i18n {
56namespace phonenumbers {
57
58class ThreadChecker {
59 public:
60  bool CalledOnValidThread() const {
61    return true;
62  }
63};
64
65#endif
66
67}  // namespace phonenumbers
68}  // namespace i18n
69
70#endif  // I18N_PHONENUMBERS_BASE_THREAD_CHECKER_H_
71