| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| **/ |
| |
| #ifndef QUICKSTEP_THREADING_POSIX_SHARED_MUTEX_HPP_ |
| #define QUICKSTEP_THREADING_POSIX_SHARED_MUTEX_HPP_ |
| |
| #include <pthread.h> |
| |
| #include "threading/SharedMutex.hpp" |
| #include "utility/Macros.hpp" |
| |
| namespace quickstep { |
| |
| /** |
| * @brief Implementation of SharedMutex using POSIX rwlock. |
| **/ |
| class SharedMutexImplPosix { |
| public: |
| inline SharedMutexImplPosix() { |
| DO_AND_DEBUG_ASSERT_ZERO(pthread_rwlock_init(&internal_rwlock_, nullptr)); |
| } |
| |
| inline ~SharedMutexImplPosix() { |
| DO_AND_DEBUG_ASSERT_ZERO(pthread_rwlock_destroy(&internal_rwlock_)); |
| } |
| |
| inline void lock() { |
| DO_AND_DEBUG_ASSERT_ZERO(pthread_rwlock_wrlock(&internal_rwlock_)); |
| } |
| |
| inline void unlock() { |
| DO_AND_DEBUG_ASSERT_ZERO(pthread_rwlock_unlock(&internal_rwlock_)); |
| } |
| |
| inline void lockShared() { |
| DO_AND_DEBUG_ASSERT_ZERO(pthread_rwlock_rdlock(&internal_rwlock_)); |
| } |
| |
| inline void unlockShared() { |
| DO_AND_DEBUG_ASSERT_ZERO(pthread_rwlock_unlock(&internal_rwlock_)); |
| } |
| |
| private: |
| pthread_rwlock_t internal_rwlock_; |
| |
| DISALLOW_COPY_AND_ASSIGN(SharedMutexImplPosix); |
| }; |
| |
| typedef SharedMutexImplPosix SharedMutex; |
| |
| } // namespace quickstep |
| |
| #endif // QUICKSTEP_THREADING_POSIX_SHARED_MUTEX_HPP_ |