SbThreadSignal.h

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**=======================================================================*/
/*=======================================================================
** Author      : Nicolas DAGUISE (May 2007)
**=======================================================================*/
 
 
#ifndef SB_THREAD_SIGNAL_H
#define SB_THREAD_SIGNAL_H
 
#include <Inventor/sys/port.h>
#include <Inventor/SbBase.h>
 
#include <Inventor/threads/SbThreadSpinlock.h>
 
class SbThreadMutex;
 
#if !defined (WIN32)
#include <pthread.h>
#endif
 
class  SbThreadSignal
{
public:
 
  SbThreadSignal( SbThreadMutex* mtx );
 
  ~SbThreadSignal( );
 
  void signalOne( );
 
  void signalAll( );
 
  void wait( );
 
  SbBool trywait( const unsigned int timeout_ms );
 
private:
  SbThreadMutex* m_signalMtx;
 
#if defined(_WIN32)
  HANDLE m_events[2];
  uint32_t m_waitersCount;
  SbThreadSpinlock m_spinlock;
 
#elif defined (__linux__) || defined(__APPLE__)
  pthread_cond_t m_event;
  bool m_automatic;
  bool m_active;
 
#else
  // Not implemented yet.
#endif
};
 
#endif // SB_THREAD_SIGNAL_H