watchdog.h

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/*
 * Copyright (c) 2007 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 WATCHDOG_H
#define WATCHDOG_H
 
#include "event-id.h"
#include "nstime.h"
 
namespace ns3
{
 
class TimerImpl;
 
class Watchdog
{
  public:
    Watchdog();
    ~Watchdog();
 
    void Ping(Time delay);
 
    template <typename FN>
    void SetFunction(FN fn);
 
    template <typename MEM_PTR, typename OBJ_PTR>
    void SetFunction(MEM_PTR memPtr, OBJ_PTR objPtr);
 
    template <typename... Ts>
    void SetArguments(Ts&&... args);
  private:
    void Expire();
    TimerImpl* m_impl;
    EventId m_event;
    Time m_end;
};
 
} // namespace ns3
 
/********************************************************************
 *  Implementation of the templates declared above.
 ********************************************************************/
 
#include "timer-impl.h"
 
namespace ns3
{
 
template <typename FN>
void
Watchdog::SetFunction(FN fn)
{
    delete m_impl;
    m_impl = MakeTimerImpl(fn);
}
 
template <typename MEM_PTR, typename OBJ_PTR>
void
Watchdog::SetFunction(MEM_PTR memPtr, OBJ_PTR objPtr)
{
    delete m_impl;
    m_impl = MakeTimerImpl(memPtr, objPtr);
}
 
template <typename... Ts>
void
Watchdog::SetArguments(Ts&&... args)
{
    if (m_impl == nullptr)
    {
        NS_FATAL_ERROR("You cannot set the arguments of a Watchdog before setting its function.");
        return;
    }
    m_impl->SetArgs(std::forward<Ts>(args)...);
}
 
} // namespace ns3
 
#endif /* WATCHDOG_H */