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
24namespace OHOS::AppExecFwk {
25using Callback = std::function<void()>;
26
27class EventTask {
28public:
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
37private:
38    size_t order;
39    Callback task;
40    std::chrono::steady_clock::time_point targetTime;
41};
42
43using EventQueue = std::priority_queue<EventTask, std::deque<EventTask>, std::greater<EventTask>>;
44}
45#endif // EVENT_QUEUE_H