/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */

/*

 * Copyright (c) 2005,2006 INRIA

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation;

 *

 * 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

 *

 * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>

 */

#ifndef DEFAULT_SIMULATOR_IMPL_H

#define DEFAULT_SIMULATOR_IMPL_H

#include "simulator-impl.h"

#include "scheduler.h"

#include "event-impl.h"

#include "ns3/ptr.h"

#include "ns3/assert.h"

#include "ns3/log.h"

#include <list>

#include <fstream>

namespace ns3 {

  class DefaultSimulatorImpl : public SimulatorImpl

{

public:

  static TypeId GetTypeId (void);

  DefaultSimulatorImpl ();

  ~DefaultSimulatorImpl ();

  void Destroy ();

  void EnableLogTo (char const *filename);

  bool IsFinished (void) const;

  Time Next (void) const;

  void Stop (void);

  void Stop (Time const &time);

  EventId Schedule (Time const &time, const Ptr<EventImpl> &event);

  EventId ScheduleNow (const Ptr<EventImpl> &event);

  EventId ScheduleDestroy (const Ptr<EventImpl> &event);

  void Remove (const EventId &ev);

  void Cancel (const EventId &ev);

  bool IsExpired (const EventId &ev) const;

  void Run (void);

  Time Now (void) const;

  Time GetDelayLeft (const EventId &id) const;

  Time GetMaximumSimulationTime (void) const;

  void SetScheduler (Ptr<Scheduler> scheduler);

  Ptr<Scheduler> GetScheduler (void) const;

private:

  void ProcessOneEvent (void);

  uint64_t NextTs (void) const;

  typedef std::list<EventId> DestroyEvents;

  DestroyEvents m_destroyEvents;

  uint64_t m_stopAt;

  bool m_stop;

  Ptr<Scheduler> m_events;

  uint32_t m_uid;

  uint32_t m_currentUid;

  uint64_t m_currentTs;

  std::ofstream m_log;

  std::ifstream m_inputLog;

  bool m_logEnable;

  // number of events that have been inserted but not yet scheduled,

  // not counting the "destroy" events; this is used for validation

  int m_unscheduledEvents;

};

} // namespace ns3

#endif /* DEFAULT_SIMULATOR_IMPL_H */