1 // Copyright (C) 2011 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_SYNCHRONIZATION_LOCK_H_ 18 #define I18N_PHONENUMBERS_BASE_SYNCHRONIZATION_LOCK_H_ 19 20 #if defined(I18N_PHONENUMBERS_USE_BOOST) 21 #include <boost/thread/mutex.hpp> 22 23 namespace i18n { 24 namespace phonenumbers { 25 26 typedef boost::mutex Lock; 27 typedef boost::mutex::scoped_lock AutoLock; 28 29 } // namespace phonenumbers 30 } // namespace i18n 31 32 #else // I18N_PHONENUMBERS_USE_BOOST 33 34 #include "phonenumbers/base/logging.h" 35 #include "phonenumbers/base/thread_checker.h" 36 37 // C++11 Lock implementation based on std::mutex. 38 #if __cplusplus>=201103L 39 #include <mutex> 40 41 namespace i18n { 42 namespace phonenumbers { 43 44 class Lock { 45 public: 46 Lock() = default; 47 Acquire()48 void Acquire() const { 49 mutex_.lock(); 50 } 51 Release()52 void Release() const { 53 mutex_.unlock(); 54 } 55 56 private: 57 mutable std::mutex mutex_; 58 }; 59 60 } // namespace phonenumbers 61 } // namespace i18n 62 63 // Dummy lock implementation on non-POSIX platforms. If you are running on a 64 // different platform and care about thread-safety, please compile with 65 // -DI18N_PHONENUMBERS_USE_BOOST. 66 #elif !defined(__linux__) && !defined(__APPLE__) 67 68 namespace i18n { 69 namespace phonenumbers { 70 71 class Lock { 72 public: Lock()73 Lock() {} 74 Acquire()75 void Acquire() const { 76 DCHECK(thread_checker_.CalledOnValidThread()); 77 IGNORE_UNUSED(thread_checker_); 78 } 79 Release()80 void Release() const { 81 DCHECK(thread_checker_.CalledOnValidThread()); 82 IGNORE_UNUSED(thread_checker_); 83 } 84 85 private: 86 const ThreadChecker thread_checker_; 87 }; 88 89 } // namespace phonenumbers 90 } // namespace i18n 91 92 #else 93 #include "phonenumbers/base/synchronization/lock_posix.h" 94 #endif 95 96 namespace i18n { 97 namespace phonenumbers { 98 99 class AutoLock { 100 public: AutoLock(Lock & lock)101 AutoLock(Lock& lock) : lock_(lock) { 102 lock_.Acquire(); 103 } 104 ~AutoLock()105 ~AutoLock() { 106 lock_.Release(); 107 } 108 109 private: 110 Lock& lock_; 111 }; 112 113 } // namespace phonenumbers 114 } // namespace i18n 115 116 #endif // I18N_PHONENUMBERS_USE_BOOST 117 #endif // I18N_PHONENUMBERS_BASE_SYNCHRONIZATION_LOCK_H_ 118