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#ifndef schedulable_alarm_hh
#define schedulable_alarm_hh
// schedulable_alarm.hh
//  {{{
//
// Copyright (C) 2004 Nicolas Schodet
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// Contact :
//        Web: http://perso.efrei.fr/~schodet/
//      Email: <contact@ni.fr.eu.org>
// }}}
#include "schedulable.hh"
#include "utils/callback.hh"
#include "timer/timer.hh"

namespace scheduler {

/// Execute un callback � un instant donn�.
class SchedulableAlarm : public Schedulable
{
    Callback<void> callback_;
    int start_, step_;
    bool periodic_;
  public:
    /// Construit une alarm dans step milliseconde, p�riodique si periodic est
    /// vrai (vrai par defaut), � partir de start si donn�, ou de maintenant
    /// sinon.
    template<typename T>
    SchedulableAlarm (T callback, int step, bool periodic = true,
		      int start = -1)
	: callback_ (callback),
	  start_ (start), step_ (step), periodic_ (periodic)
      {
	if (start_ == -1)
	    start_ = Timer::getProgramTime ();
      }
    /// Param�tre le Scheduler.
    void setup (Scheduler &scheduler, int time, FdSet &readSet, int &timeout);
    /// Appel� apr�s l'attente du Scheduler, renvois true si un �v�nement a
    /// �t� trait�.
    bool run (Scheduler &scheduler, int time, const FdSet &readSet);
};

} // namespace scheduler

#endif // schedulable_alarm_hh