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 16 #ifndef TIMER_HANDLER_H 17 #define TIMER_HANDLER_H 18 19 #include <array> 20 #include <cstdint> 21 #include <string> 22 #include <chrono> 23 #include <memory> 24 25 #include "time_common.h" 26 27 namespace OHOS { 28 namespace MiscServices { 29 static const size_t ALARM_TYPE_COUNT = 5; 30 static const size_t N_TIMER_FDS = ALARM_TYPE_COUNT + 1; 31 typedef std::array<int, N_TIMER_FDS> TimerFds; 32 33 class TimerHandler { 34 public: 35 static std::shared_ptr<TimerHandler> Create(); 36 int Set(uint32_t type, std::chrono::nanoseconds when); 37 uint32_t WaitForAlarm(); 38 ~TimerHandler(); 39 private: 40 TimerHandler(const TimerFds &fds, int epollfd); 41 const TimerFds fds_; 42 const int epollFd_; 43 }; 44 } // MiscService 45 } // OHOS 46 #endif