1 /*
2  * Copyright (c) 2024 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 SCENE_TIMER_OH_IMPL_H
16 #define SCENE_TIMER_OH_IMPL_H
17 
18 #include "ISceneTimerInfrastructure.h"
19 #include <map>
20 #include <mutex>
21 #include <condition_variable>
22 
23 /* this design is difficult to UT, that's a problem */
24 class SceneTimerOhImpl : public ISceneTimerInfrastructure {
25 public:
26     const static unsigned int checkInterval = 500; // this means accuracy
27 
28     SceneTimerOhImpl();
29     void RegUser(int userId, ICb* cb) override;
30     void UnRegUser(int userId) override;
31     void Start(int user, int id, long interval) override;
32     void Stop(int user, int id) override;
33 
34 private:
35     const static int maxUserId = 16;
36     const static int maxRecordPerUser = 128;
37 
38     std::map<int, long long> records;
39     std::mutex mut;
40     std::condition_variable cv;
41     std::map<int, ICb*> callbacks; // userId as key, potentially multi-thread problem, but for now, lock is not needed
42 
43     void Loop();
44     void FillRecordAndNotify(int key, long long expireTs);
45     void ValidateDuplication(int key);
46     void ValidateExistence(int key);
47     long long GetCurTimeStamp();
48     void CheckRecordsAndTrigger();
49     static int BuildRecordKey(int user, int id);
50     long long CalcExpireTimeStamp(long delay);
51     void TriggerCallbak(int recordKey);
52     static int ExtractUserFromRecordKey(int key);
53     static int ExtractIdFromRecordKey(int key);
54     void RemoveRecordAndNotify(int key);
55 };
56 #endif
57