1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef LIBRARIES_SDK_UTIL_SIMPLE_LOCK_H_ 6 #define LIBRARIES_SDK_UTIL_SIMPLE_LOCK_H_ 7 8 #include "pthread.h" 9 #include "sdk_util/macros.h" 10 11 namespace sdk_util { 12 13 /* 14 * SimpleLock 15 * 16 * A pthread mutex object, with automatic initialization and destruction. 17 * Should be used with AutoLock where possible. 18 */ 19 class SimpleLock { 20 public: SimpleLock()21 SimpleLock() { 22 pthread_mutex_init(&lock_, NULL); 23 } 24 ~SimpleLock()25 ~SimpleLock() { 26 pthread_mutex_destroy(&lock_); 27 } 28 Lock()29 void Lock() const { pthread_mutex_lock(&lock_); } Unlock()30 void Unlock() const { pthread_mutex_unlock(&lock_); } 31 mutex()32 pthread_mutex_t* mutex() const { return &lock_; } 33 34 private: 35 mutable pthread_mutex_t lock_; 36 37 DISALLOW_COPY_AND_ASSIGN(SimpleLock); 38 }; 39 40 } // namespace sdk_util 41 42 #endif // LIBRARIES_SDK_UTIL_SIMPLE_LOCK_H_ 43