1 /*
2  * Copyright (C) 2010 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef SCOPED_PTHREAD_MUTEX_LOCK_H_included
18 #define SCOPED_PTHREAD_MUTEX_LOCK_H_included
19 
20 #include <pthread.h>
21 
22 /**
23  * Locks and unlocks a pthread_mutex_t as it goes in and out of scope.
24  */
25 class ScopedPthreadMutexLock {
26 public:
ScopedPthreadMutexLock(pthread_mutex_t * mutex)27     explicit ScopedPthreadMutexLock(pthread_mutex_t* mutex) : mMutexPtr(mutex) {
28         pthread_mutex_lock(mMutexPtr);
29     }
30 
~ScopedPthreadMutexLock()31     ~ScopedPthreadMutexLock() {
32         pthread_mutex_unlock(mMutexPtr);
33     }
34 
35 private:
36     pthread_mutex_t* mMutexPtr;
37 
38     // Disallow copy and assignment.
39     ScopedPthreadMutexLock(const ScopedPthreadMutexLock&);
40     void operator=(const ScopedPthreadMutexLock&);
41 };
42 
43 #endif  // SCOPED_PTHREAD_MUTEX_LOCK_H_included
44