1 /*
2  * Copyright (C) 2022 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 SYNCHRONIZE_EVENT_H
16 #define SYNCHRONIZE_EVENT_H
17 #include <pthread.h>
18 
19 namespace OHOS {
20 namespace NFC {
21 class SynchronizeEvent {
22 public:
23     SynchronizeEvent();
24     ~SynchronizeEvent();
25 
26     void Start();
27     void End();
28     void Wait();
29     bool Wait(long ms);
30     void NotifyOne();
31 
32 private:
33     pthread_mutex_t lock_;
34     pthread_cond_t cond_;
35 };
36 
37 class SynchronizeGuard {
38 public:
SynchronizeGuard(SynchronizeEvent & event)39     explicit SynchronizeGuard(SynchronizeEvent& event) : syncEvent_(event)
40     {
41         event.Start();
42     };
43 
~SynchronizeGuard()44     ~SynchronizeGuard()
45     {
46         syncEvent_.End();
47     };
48 
49 private:
50     SynchronizeEvent& syncEvent_;
51 };
52 }  // namespace NFC
53 }  // namespace OHOS
54 #endif  // SYNCHRONIZE_EVENT_H
55