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 "Mutex" 17 18 #include "foundation/osal/thread/mutex.h" 19 #include "foundation/log.h" 20 21 namespace OHOS { 22 namespace Media { 23 namespace OSAL { Mutex()24Mutex::Mutex() : created_(true) 25 { 26 int rtv = pthread_mutex_init(&nativeHandle_, nullptr); 27 if (rtv != 0) { 28 created_ = false; 29 MEDIA_LOG_E("failed to init pthread mutex"); 30 } 31 } 32 ~Mutex()33Mutex::~Mutex() 34 { 35 if (created_) { 36 pthread_mutex_destroy(&nativeHandle_); 37 } 38 } 39 Lock()40void Mutex::Lock() 41 { 42 if (!created_) { 43 MEDIA_LOG_E("Lock uninitialized pthread mutex!"); 44 return; 45 } 46 pthread_mutex_lock(&nativeHandle_); 47 } 48 TryLock()49bool Mutex::TryLock() 50 { 51 if (!created_) { 52 MEDIA_LOG_E("TryLock uninitialized pthread mutex."); 53 return false; 54 } 55 int ret = pthread_mutex_trylock(&nativeHandle_); 56 if (ret != 0) { 57 MEDIA_LOG_E("TryLock failed with ret = " PUBLIC_LOG_D32, ret); 58 } 59 return ret == 0; 60 } 61 Unlock()62void Mutex::Unlock() 63 { 64 if (!created_) { 65 MEDIA_LOG_E("Unlock uninitialized pthread mutex!"); 66 return; 67 } 68 pthread_mutex_unlock(&nativeHandle_); 69 } 70 } // namespace OSAL 71 } // namespace Media 72 } // namespace OHOS