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      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:
     27     explicit ScopedPthreadMutexLock(pthread_mutex_t* mutex) : mMutexPtr(mutex) {
     28         pthread_mutex_lock(mMutexPtr);
     29     }
     30 
     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