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/* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
/*
* Copyright (c) Xerox Corporation 1997. All rights reserved.
*
* 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.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linking this file statically or dynamically with other modules is making
* a combined work based on this file. Thus, the terms and conditions of
* the GNU General Public License cover the whole combination.
*
* In addition, as a special exception, the copyright holders of this file
* give you permission to combine this file with free software programs or
* libraries that are released under the GNU LGPL and with code included in
* the standard release of ns-2 under the Apache 2.0 license or under
* otherwise-compatible licenses with advertising requirements (or modified
* versions of such code, with unchanged license). You may copy and
* distribute such a system following the terms of the GNU GPL for this
* file and the licenses of the other code concerned, provided that you
* include the source code of that other code when and as the GNU GPL
* requires distribution of source code.
*
* Note that people who make modified versions of this file are not
* obligated to grant this special exception for their modified versions;
* it is their choice whether to do so. The GNU General Public License
* gives permission to release a modified version without this exception;
* this exception also makes it possible to release a modified version
* which carries forward this exception.
*
* Changes by the Daedalus group, http://daedalus.cs.berkeley.edu
* Add Application interface
*
* @(#) $Header: /cvsroot/nsnam/ns-2/tools/trafgen.h,v 1.7 2005/08/26 05:05:31 tomh Exp $ (Xerox)
*/
#ifndef ns_trafgen_h
#define ns_trafgen_h
#include "app.h"
#include "timer-handler.h"
class TrafficGenerator;
class TrafficTimer : public TimerHandler {
public:
TrafficTimer(TrafficGenerator* tg) : tgen_(tg) {}
protected:
void expire(Event*);
TrafficGenerator* tgen_;
};
/* abstract class for traffic generation modules. derived classes
* must define the next_interval() function. the traffic generation
* module schedules an event for a UDP_Agent when it is time to
* generate a new packet. it passes the packet size with the event
* (to accommodate traffic generation modules that may not use fixed
* size packets).
*/
/* abstract class for traffic generation modules. derived classes
* must define the next_interva() function that is invoked by
* UDP_Agent. This function returns the time to the next packet
* is generated and sets the size of the packet (which is passed
* by reference). The init() method is called from the start()
* method of the UDP_Agent. It can do any one-time initialization
* needed by the traffic generation process.
*/
class TrafficGenerator : public Application {
public:
TrafficGenerator();
virtual double next_interval(int &) = 0;
virtual void init() {}
virtual double interval() { return 0; }
virtual int on() { return 0; }
virtual void timeout();
virtual void recv() {}
virtual void resume() {}
protected:
virtual void start();
virtual void stop();
double nextPkttime_;
int size_;
int running_;
TrafficTimer timer_;
};
#endif
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