realtime-simulator-impl.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2008 University of Washington
 *
 * 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
 */
 
#ifndef REALTIME_SIMULATOR_IMPL_H
#define REALTIME_SIMULATOR_IMPL_H
 
#include "simulator-impl.h"
#include "system-thread.h"
 
#include "scheduler.h"
#include "synchronizer.h"
#include "event-impl.h"
 
#include "ptr.h"
#include "assert.h"
#include "log.h"
#include "system-mutex.h"
 
#include <list>
 
namespace ns3 {
 
class RealtimeSimulatorImpl : public SimulatorImpl
{
public:
  static TypeId GetTypeId (void);
 
  enum SynchronizationMode
  {
    SYNC_BEST_EFFORT,
    SYNC_HARD_LIMIT,
  };
 
  RealtimeSimulatorImpl ();
  ~RealtimeSimulatorImpl ();
 
  // Inherited from SimulatorImpl
  virtual void Destroy ();
  virtual bool IsFinished (void) const;
  virtual void Stop (void);
  virtual void Stop (const Time &delay);
  virtual EventId Schedule (const Time &delay, EventImpl *event);
  virtual void ScheduleWithContext (uint32_t context, const Time &delay, EventImpl *event);
  virtual EventId ScheduleNow (EventImpl *event);
  virtual EventId ScheduleDestroy (EventImpl *event);
  virtual void Remove (const EventId &ev);
  virtual void Cancel (const EventId &ev);
  virtual bool IsExpired (const EventId &ev) const;
  virtual void Run (void);
  virtual Time Now (void) const;
  virtual Time GetDelayLeft (const EventId &id) const;
  virtual Time GetMaximumSimulationTime (void) const;
  virtual void SetScheduler (ObjectFactory schedulerFactory);
  virtual uint32_t GetSystemId (void) const;
  virtual uint32_t GetContext (void) const;
  virtual uint64_t GetEventCount (void) const;
 
  void ScheduleRealtimeWithContext (uint32_t context, const Time &delay, EventImpl *event);
  void ScheduleRealtime (const Time &delay, EventImpl *event);
  void ScheduleRealtimeNowWithContext (uint32_t context, EventImpl *event);
  void ScheduleRealtimeNow (EventImpl *event);
  Time RealtimeNow (void) const;
 
  void SetSynchronizationMode (RealtimeSimulatorImpl::SynchronizationMode mode);
  RealtimeSimulatorImpl::SynchronizationMode GetSynchronizationMode (void) const;
 
  void SetHardLimit (Time limit);
  Time GetHardLimit (void) const;
 
private:
  bool Running (void) const;
  bool Realtime (void) const;
  uint64_t NextTs (void) const;
  void ProcessOneEvent (void);
  virtual void DoDispose (void);
 
  typedef std::list<EventId> DestroyEvents;
  DestroyEvents m_destroyEvents;
  bool m_stop;
  bool m_running;
 
  Ptr<Scheduler> m_events;
  int m_unscheduledEvents;
  uint32_t m_uid;
  uint32_t m_currentUid;
  uint64_t m_currentTs;
  uint32_t m_currentContext;
  uint64_t m_eventCount;
  mutable SystemMutex m_mutex;
 
  Ptr<Synchronizer> m_synchronizer;
 
  SynchronizationMode m_synchronizationMode;
 
  Time m_hardLimit;
 
  SystemThread::ThreadId m_main;
};
 
} // namespace ns3
 
#endif /* REALTIME_SIMULATOR_IMPL_H */