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 #ifndef TIMER_MGR_H 16 #define TIMER_MGR_H 17 18 #include <memory> 19 #include <list> 20 #include <mutex> 21 #include <thread> 22 #include <condition_variable> 23 #include "id_allocator.h" 24 25 namespace OHOS { 26 namespace IntellVoiceUtils { 27 constexpr int32_t US_PER_MS = 1000; 28 // struct for set timer 29 struct TimerCfg { 30 explicit TimerCfg(int type = 0, int64_t delayUs = 0, int cookie = 0) typeTimerCfg31 : type(type), delayUs(delayUs), cookie(cookie) 32 { 33 }; 34 35 int type; 36 int64_t delayUs; 37 int cookie; 38 }; 39 40 // struct for callback 41 struct TimerEvent { typeTimerEvent42 explicit TimerEvent(int type = 0, int timeId = 0, int cookie = 0) : type(type), timeId(timeId), cookie(cookie) {}; 43 44 int type; 45 int timeId; 46 int cookie; 47 }; 48 49 50 struct ITimerObserver { ~ITimerObserverITimerObserver51 virtual ~ITimerObserver() {}; 52 virtual void OnTimerEvent(TimerEvent& info) = 0; 53 }; 54 55 enum class TimerStatus { 56 TIMER_STATUS_INIT, 57 TIMER_STATUS_STARTED, 58 TIMER_STATUS_TO_QUIT 59 }; 60 61 struct TimerItem { 62 explicit TimerItem(int id = 0, int type = 0, int cookie = 0, 63 int64_t delayUs = static_cast<long long>(0), ITimerObserver* observer = nullptr); 64 bool operator==(const TimerItem& right) const 65 { 66 return tgtUs == right.tgtUs; 67 }; 68 bool operator<(const TimerItem& right) const 69 { 70 return tgtUs < right.tgtUs; 71 }; 72 73 int timerId; 74 int type; 75 int cookie; 76 int64_t tgtUs; 77 ITimerObserver* observer; 78 }; 79 80 class TimerMgr : private IdAllocator { 81 public: 82 explicit TimerMgr(int maxTimerNum = 10); 83 ~TimerMgr() override; 84 85 void Start(ITimerObserver* observer = nullptr); 86 void Stop(); 87 int SetTimer(int type, int64_t delayUs, int cookie = 0, ITimerObserver* currObserver = nullptr); 88 int ResetTimer(int timerId, int type, int64_t delayUs, int cookie, ITimerObserver* currObserver); 89 void KillTimer(int& timerId); 90 91 private: 92 void Clear(); 93 void WorkThread(); 94 95 private: 96 TimerStatus status_; 97 ITimerObserver* timerObserver_; 98 std::list<std::shared_ptr<TimerItem>> itemQueue_; 99 100 std::mutex timeMutex_; 101 std::condition_variable cv_; 102 std::thread workThread_; 103 }; 104 } 105 } 106 #endif 107