1/*
2 * Copyright (c) 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#ifndef UTILS_TIMER_EVENT_HANDLER_H
16#define UTILS_TIMER_EVENT_HANDLER_H
17
18#include <functional>
19#include <memory>
20#include <cstdint>
21#include "event_handler.h"
22
23namespace OHOS {
24namespace Utils {
25constexpr int INVALID_TIMER_FD = -1;
26
27class EventReactor;
28
29class TimerEventHandler : public EventHandler {
30    using TimerCallback = std::function<void(int timerFd)>;
31
32public:
33    TimerEventHandler(EventReactor* p, uint32_t timeout, bool once);
34    ~TimerEventHandler() override;
35
36    TimerEventHandler(const TimerEventHandler&) = delete;
37    TimerEventHandler& operator=(const TimerEventHandler&) = delete;
38    TimerEventHandler(const TimerEventHandler&&) = delete;
39    TimerEventHandler& operator=(const TimerEventHandler&&) = delete;
40
41    uint32_t Initialize();
42    void Uninitialize();
43
44    void SetTimerCallback(const TimerCallback& callback) { callback_ = callback; }
45
46    uint32_t GetInterval() const { return interval_; }
47
48private:
49    void TimeOut();
50
51private:
52    bool           once_;
53    uint32_t       interval_;
54    TimerCallback  callback_;
55};
56
57} // namespace Utils
58} // namespace OHOS
59#endif
60