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//
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// modification, are permitted provided that the following conditions are
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//
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// notice, this list of conditions and the following disclaimer.
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// in the documentation and/or other materials provided with the
// distribution.
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#ifndef MOZC_BASE_UNNAMED_EVENT_H_
#define MOZC_BASE_UNNAMED_EVENT_H_

#include "base/scoped_handle.h"

#ifndef OS_WINDOWS
#include <pthread.h>
#endif

namespace mozc {

// UnnamedEvent is a simple event object shared
// by multiple threads
class UnnamedEvent {
 public:
  UnnamedEvent();
  virtual ~UnnamedEvent();

  // Wait an event. Can set a maximum timeout value.
  // Return true if the event object receives a notification event from
  // different thread.
  bool Wait(int msec);

  // Raise a notification event
  bool Notify();

  // return true if this event object is available
  bool IsAvailable() const;

 private:
#ifdef OS_WINDOWS
  ScopedHandle handle_;
#else
  pthread_cond_t cond_;
  pthread_mutex_t mutex_;
#endif
};
}  // namespace mozc

#endif  // MOZC_BASE_UNNAMED_EVENT_H_