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 
16 #ifndef OHOS_SAMGR_TIME_HANDLER_H
17 #define OHOS_SAMGR_TIME_HANDLER_H
18 
19 #include <thread>
20 #include <string>
21 #include <functional>
22 #include <sys/epoll.h>
23 #include <signal.h>
24 #include <sys/timerfd.h>
25 #include <sys/time.h>
26 #include <errno.h>
27 #include <unistd.h>
28 #include <mutex>
29 #include <concurrent_map.h>
30 #include <atomic>
31 namespace OHOS {
32 class SamgrTimeHandler {
33 public:
34     typedef std::function<void()> TaskType;
35     ~SamgrTimeHandler();
36     static SamgrTimeHandler* GetInstance();
37     bool PostTask(TaskType func, uint64_t delayTime);
38 
39 private:
40     SamgrTimeHandler();
41     class Deletor {
42     public:
~Deletor()43         ~Deletor()
44         {
45             if (nullptr != SamgrTimeHandler::singleton) {
46                 delete SamgrTimeHandler::singleton;
47                 SamgrTimeHandler::singleton = nullptr;
48             }
49         }
50     };
51     void StartThread();
52     void OnTime(SamgrTimeHandler &handle, int number, struct epoll_event events[]);
53     int CreateAndRetry();
54 
55 private:
56     int epollfd = -1;
57     std::atomic<bool> flag = false;
58     ConcurrentMap <uint32_t, TaskType> timeFunc;
59     static SamgrTimeHandler* volatile singleton;
60     static Deletor deletor;
61 };
62 } // namespace OHOS
63 #endif // OHOS_SAMGR_TIME_HANDLER_H