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_SYNCHRONIZATION_LOCK_POSIX_H_ 18 #define I18N_PHONENUMBERS_BASE_SYNCHRONIZATION_LOCK_POSIX_H_ 19 20 #include <pthread.h> 21 22 #include "phonenumbers/base/basictypes.h" 23 #include "phonenumbers/base/logging.h" 24 25 namespace i18n { 26 namespace phonenumbers { 27 28 class Lock { 29 public: Lock()30 Lock() { 31 const int ret = pthread_mutex_init(&mutex_, NULL); 32 (void) ret; 33 DCHECK_EQ(0, ret); 34 } 35 36 // This type is neither copyable nor movable. 37 Lock(const Lock&) = delete; 38 Lock& operator=(const Lock&) = delete; 39 ~Lock()40 ~Lock() { 41 const int ret = pthread_mutex_destroy(&mutex_); 42 (void) ret; 43 DCHECK_EQ(0, ret); 44 } 45 Acquire()46 void Acquire() const { 47 int ret = pthread_mutex_lock(&mutex_); 48 (void) ret; 49 DCHECK_EQ(0, ret); 50 } 51 Release()52 void Release() const { 53 int ret = pthread_mutex_unlock(&mutex_); 54 (void) ret; 55 DCHECK_EQ(0, ret); 56 } 57 58 private: 59 mutable pthread_mutex_t mutex_; 60 }; 61 62 } // namespace phonenumbers 63 } // namespace i18n 64 65 #endif // I18N_PHONENUMBERS_BASE_SYNCHRONIZATION_LOCK_POSIX_H_ 66