1 /* 2 * Copyright (c) 2023 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 EVENT_QUEUE_H 17 #define EVENT_QUEUE_H 18 19 #include <iostream> 20 #include <queue> 21 #include <chrono> 22 #include <functional> 23 24 namespace OHOS::AppExecFwk { 25 using Callback = std::function<void()>; 26 27 class EventTask { 28 public: 29 EventTask(size_t order, Callback task, std::chrono::steady_clock::time_point targetTime); 30 EventTask(const EventTask& other); 31 EventTask& operator=(const EventTask& other); 32 ~EventTask(); 33 const Callback& GetTask() const; 34 std::chrono::steady_clock::time_point GetTargetTime() const; 35 bool operator>(const EventTask& other) const; 36 37 private: 38 size_t order; 39 Callback task; 40 std::chrono::steady_clock::time_point targetTime; 41 }; 42 43 using EventQueue = std::priority_queue<EventTask, std::deque<EventTask>, std::greater<EventTask>>; 44 } 45 #endif // EVENT_QUEUE_H