1 /* 2 * Copyright (c) 2025 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 #ifndef THREAD_SAFE_QUEUE_H 17 #define THREAD_SAFE_QUEUE_H 18 19 #include <queue> 20 #include <shared_mutex> 21 22 namespace OHOS { 23 namespace MMI { 24 25 template <typename T> 26 class ThreadSafeQueue { 27 public: Push(T elem)28 void Push(T elem) 29 { 30 std::unique_lock<std::shared_mutex> lock(rwMutex_); 31 queue_.push(elem); 32 } 33 Pop()34 void Pop() 35 { 36 std::unique_lock<std::shared_mutex> lock(rwMutex_); 37 queue_.pop(); 38 } 39 Front()40 T Front() 41 { 42 std::shared_lock<std::shared_mutex> lock(rwMutex_); 43 return queue_.front(); 44 } 45 Back()46 T Back() 47 { 48 std::shared_lock<std::shared_mutex> lock(rwMutex_); 49 return queue_.back(); 50 } 51 Empty()52 bool Empty() 53 { 54 std::shared_lock<std::shared_mutex> lock(rwMutex_); 55 return queue_.empty(); 56 } 57 Size()58 size_t Size() 59 { 60 std::shared_lock<std::shared_mutex> lock(rwMutex_); 61 return queue_.size(); 62 } 63 private: 64 std::queue<T> queue_; 65 std::shared_mutex rwMutex_; 66 }; 67 } // namespace MMI 68 } // namespace OHOS 69 70 #endif // THREAD_SAFE_QUEUE_H