lockers.h

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// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
 
#ifndef RUNTIME_BIN_LOCKERS_H_
#define RUNTIME_BIN_LOCKERS_H_
 
#include "bin/thread.h"
#include "platform/assert.h"
 
namespace dart {
namespace bin {
 
class MutexLocker {
 public:
  explicit MutexLocker(Mutex* mutex) : mutex_(mutex) {
    ASSERT(mutex != nullptr);
    mutex_->Lock();
  }
 
  virtual ~MutexLocker() { mutex_->Unlock(); }
 
 private:
  Mutex* const mutex_;
 
  DISALLOW_COPY_AND_ASSIGN(MutexLocker);
};
 
class MonitorLocker {
 public:
  explicit MonitorLocker(Monitor* monitor) : monitor_(monitor) {
    ASSERT(monitor != nullptr);
    monitor_->Enter();
  }
 
  virtual ~MonitorLocker() { monitor_->Exit(); }
 
  Monitor::WaitResult Wait(int64_t millis = Monitor::kNoTimeout) {
    return monitor_->Wait(millis);
  }
 
  void Notify() { monitor_->Notify(); }
 
  void NotifyAll() { monitor_->NotifyAll(); }
 
 private:
  Monitor* const monitor_;
 
  DISALLOW_COPY_AND_ASSIGN(MonitorLocker);
};
 
}  // namespace bin
}  // namespace dart
 
#endif  // RUNTIME_BIN_LOCKERS_H_