1 /*
2  * Copyright (C) 2015 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 #include <pthread.h>
18 
19 namespace android {
20 
21 class AutoLock {
22  public:
AutoLock(pthread_mutex_t * mutex,const char * const name)23   AutoLock(pthread_mutex_t *mutex, const char *const name)
24       : mutex_(mutex), name_(name) {
25   }
~AutoLock()26   ~AutoLock() {
27     if (locked_)
28       Unlock();
29   }
30 
31   AutoLock(const AutoLock &rhs) = delete;
32   AutoLock &operator=(const AutoLock &rhs) = delete;
33 
34   int Lock();
35   int Unlock();
36 
37  private:
38   pthread_mutex_t *const mutex_;
39   bool locked_ = false;
40   const char *const name_;
41 };
42 }  // namespace android
43