1 /*
2  * Copyright (c) 2020 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_MUTEX_LOCK_H
17 #define OHOS_MUTEX_LOCK_H
18 
19 #include <pthread.h>
20 
21 namespace OHOS {
22 template<typename T>
23 struct Lock {
24 public:
LockLock25     explicit Lock(T &mutex) : mutex_(&mutex)
26     {
27         if (mutex_ != nullptr) {
28             mutex_->Lock();
29         }
30     }
31 
~LockLock32     ~Lock()
33     {
34         if (mutex_ != nullptr) {
35             mutex_->UnLock();
36         }
37     }
38 private:
39     T *mutex_;
40 };
41 
42 struct Mutex {
43 public:
MutexMutex44     Mutex()
45     {
46         pthread_mutex_init(&mutex_, nullptr);
47     }
48 
~MutexMutex49     ~Mutex()
50     {
51         pthread_mutex_destroy(&mutex_);
52     }
53 
LockMutex54     void Lock()
55     {
56         pthread_mutex_lock(&mutex_);
57     }
58 
UnLockMutex59     void UnLock()
60     {
61         pthread_mutex_unlock(&mutex_);
62     }
63 private:
64     pthread_mutex_t mutex_;
65 };
66 } // OHOS
67 #endif // OHOS_MUTEX_LOCK_H
68