Clock.h

// Copyright 2008 Michael Marsh, University of Maryland.
//
// This file is part of pydtn.
//
// pydtn 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 3 of the License, or
// (at your option) any later version.
//
// pydtn 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 pydtn.  If not, see <http://www.gnu.org/licenses/>.
//
// The views and conclusions contained in the software and documentation
// are those of the authors and should not be interpreted as representing
// official policies, either expressed or implied, of the University
// of Maryland.
//
// pydtn extends and embeds the Python interpreter, which is
// Copyright 2001-2006 Python Software Foundation, All Rights Reserved,
// and is released under the PSF License Agreement.
//
// RANLUX random number generation uses the Boost library,
// Copyright 1994-2006 by various authors (details in individual files),
// which is released under the Boost Software License, Version 1.0.

#ifndef __SIM_HARNESS_CLOCK_H__
#define __SIM_HARNESS_CLOCK_H__

#include <set>

#include "config.h"

#include "Time.h"

class Event;


struct EventCmp
{
      bool operator()( const Event* a, const Event* b ) const;
};

class Clock
{
   public :
      typedef std::multiset< Event* , EventCmp > EventList;

      static bool running() { return m_running; }

      static void schedule( Event* e );

      static void tentative( Event* e );

      static void tick();

      static const Time& time() { return m_time; }

      static void setRunning( bool b ) { m_running = b; }

      static unsigned int numEvents() { return m_events.size(); }

   private :
      static Time m_time;
      static EventList m_events;
      static EventList m_tentative;
      static bool m_running;
};


#endif /* __SIM_HARNESS_CLOCK_H__ */

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