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
23namespace OHOS {
24namespace HiviewDFX {
25/* this design is difficult to UT, that's a problem */
26class SceneTimerOhImpl : public ISceneTimerInfrastructure {
27public:
28    const static unsigned int checkInterval = 500; // this means accuracy
29
30    SceneTimerOhImpl();
31    void RegUser(int userId, ICb* cb) override;
32    void UnRegUser(int userId) override;
33    void Start(int user, int id, long interval) override;
34    void Stop(int user, int id) override;
35
36private:
37    const static int maxUserId = 16;
38    const static int maxRecordPerUser = 128;
39
40    std::map<int, long long> records;
41    std::mutex mut;
42    std::condition_variable cv;
43    std::map<int, ICb*> callbacks; // userId as key, potentially multi-thread problem, but for now, lock is not needed
44
45    void Loop();
46    void FillRecordAndNotify(int key, long long expireTs);
47    void ValidateDuplication(int key);
48    void ValidateExistence(int key);
49    long long GetCurTimeStamp();
50    void CheckRecordsAndTrigger();
51    static int BuildRecordKey(int user, int id);
52    long long CalcExpireTimeStamp(long delay);
53    void TriggerCallbak(int recordKey);
54    static int ExtractUserFromRecordKey(int key);
55    static int ExtractIdFromRecordKey(int key);
56    void RemoveRecordAndNotify(int key);
57};
58} // HiviewDFX
59} // OHOS
60#endif
61