---

wefts_cond.h

Go to the documentation of this file.

/*
   wefts_cond.h
   Abstract class implementing a condition variable.

   $Id: wefts_cond.h,v 1.2 2003/08/05 15:40:20 jonnymind Exp $
----------------------------------------------
   Begin      : 2003-08-02 00:10
   Author     : Giancarlo Niccolai

   Last modified because:

*/

/**************************************************************************
*   This program is free software; you can redistribute it and/or modify  *
*   it under the terms of the GNU Library General Public License as       *
*   published by the Free Software Foundation; either version 2.1 of the  *
*   License, or (at your option) any later version.                       *
***************************************************************************/

#ifndef WT_COND_H
#define WT_COND_H

#include <wefts_mutex.h>
#include <sys/time.h>


namespace Wefts {

class Cond
{
protected:
   pthread_cond_t m_cond;
   pthread_mutex_t *m_my_mutex;

protected:
   Cond() { pthread_cond_init( &m_cond, NULL ); }
   ~Cond() { pthread_cond_destroy( &m_cond ); }

public:
   virtual inline int wait() { return pthread_cond_wait( &m_cond, m_my_mutex ); }


   virtual inline int wait( long seconds, long nanoseconds)
   {
      struct timeval now;
      struct timespec timeout;

      gettimeofday(&now, NULL);
      timeout.tv_sec = now.tv_sec + seconds;
      timeout.tv_nsec = now.tv_usec * 1000 + nanoseconds;
      return pthread_cond_timedwait(&m_cond, m_my_mutex, &timeout);
   }


   inline int wait( double seconds )
   {
      return wait( long( seconds ),
         long( (seconds - long(seconds)) *1000000000l) );
   }

   virtual inline void signal() { pthread_cond_broadcast( &m_cond ); }
};

}

#endif
/* end of wefts_cond.h */

---