1 /* 2 * Copyright (c) 2021-2021 Huawei Device Co., Ltd. 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 16 #define HST_LOG_TAG "ScopedLock" 17 18 #include "scoped_lock.h" 19 20 #include <utility> 21 22 namespace OHOS { 23 namespace Media { 24 namespace OSAL { ScopedLock()25ScopedLock::ScopedLock() : mutex_(nullptr) 26 { 27 } 28 ScopedLock(Mutex & mutex)29ScopedLock::ScopedLock(Mutex& mutex) : mutex_(&mutex) 30 { 31 mutex_->Lock(); 32 } 33 ~ScopedLock()34ScopedLock::~ScopedLock() 35 { 36 if (mutex_ != nullptr) { 37 mutex_->Unlock(); 38 mutex_ = nullptr; 39 } 40 } 41 ScopedLock(ScopedLock && other)42ScopedLock::ScopedLock(ScopedLock&& other) noexcept 43 { 44 mutex_ = nullptr; 45 *this = std::move(other); 46 } 47 operator =(ScopedLock && other)48ScopedLock& ScopedLock::operator=(ScopedLock&& other) noexcept 49 { 50 if (this != &other) { 51 if (mutex_) { 52 mutex_->Unlock(); 53 } 54 mutex_ = other.mutex_; 55 other.mutex_ = nullptr; 56 } 57 return *this; 58 } 59 Lock()60void ScopedLock::Lock() 61 { 62 if (mutex_ != nullptr) { 63 mutex_->Lock(); 64 } 65 } 66 TryLock()67bool ScopedLock::TryLock() 68 { 69 bool ret = false; 70 if (mutex_ != nullptr) { 71 ret = mutex_->TryLock(); 72 } 73 return ret; 74 } 75 Unlock()76void ScopedLock::Unlock() 77 { 78 if (mutex_ != nullptr) { 79 mutex_->Unlock(); 80 } 81 } 82 } // namespace OSAL 83 } // namespace Media 84 } // namespace OHOS