src/pagespeed/kernel/thread/pthread_mutex.h

/*
 * Copyright 2010 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

// Author: jmarantz@google.com (Joshua Marantz)

#ifndef PAGESPEED_KERNEL_THREAD_PTHREAD_MUTEX_H_
#define PAGESPEED_KERNEL_THREAD_PTHREAD_MUTEX_H_

#include <pthread.h>
#include "pagespeed/kernel/base/basictypes.h"
#include "pagespeed/kernel/base/thread_system.h"

namespace net_instaweb {

// Implementation of ThreadSystem::CondvarCapableMutexMutex for Pthread mutexes.
class PthreadMutex : public ThreadSystem::CondvarCapableMutex {
 public:
  PthreadMutex();
  virtual ~PthreadMutex();
  virtual bool TryLock();
  virtual void Lock();
  virtual void Unlock();
  virtual ThreadSystem::Condvar* NewCondvar();

 private:
  friend class PthreadCondvar;

  pthread_mutex_t mutex_;

  DISALLOW_COPY_AND_ASSIGN(PthreadMutex);
};

}  // namespace net_instaweb

#endif  // PAGESPEED_KERNEL_THREAD_PTHREAD_MUTEX_H_