/* -*-	Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */

/*
 * Copyright (C) 1997 by the University of Southern California
 * $Id: delaymodel.cc,v 1.9 2005/08/25 18:58:10 johnh Exp $
 *
 * 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.
 *
 *
 * The copyright of this module includes the following
 * linking-with-specific-other-licenses addition:
 *
 * In addition, as a special exception, the copyright holders of
 * this module give you permission to combine (via static or
 * dynamic linking) this module 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 module 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 module
 * 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.
 *
 */

/* 
 * Contributed by Polly Huang (USC/ISI), http://www-scf.usc.edu/~bhuang
 * 
 */

#ifndef lint
static const char rcsid[] =
    "@(#) $Header: /nfs/jade/vint/CVSROOT/ns-2/queue/delaymodel.cc,v 1.9 2005/08/25 18:58:10 johnh Exp $ (UCB)";
#endif

#include "packet.h"
#include "delaymodel.h"

static class DelayModelClass : public TclClass {
public:
	DelayModelClass() : TclClass("DelayModel") {}
	TclObject* create(int, const char*const*) {
		return (new DelayModel);
	}
} class_delaymodel;

DelayModel::DelayModel() : Connector(), bandwidth_(0)
{
}


int DelayModel::command(int argc, const char*const* argv)
{
	Tcl& tcl = Tcl::instance();
	if (argc == 3) {
		if (strcmp(argv[1], "ranvar") == 0) {
			ranvar_ = (RandomVariable*) TclObject::lookup(argv[2]);
			return (TCL_OK);
		} else if (strcmp(argv[1], "bandwidth") == 0) {
			bandwidth_ = atof(argv[2]);
			return (TCL_OK);
		} 
	} else if (argc == 2) {
		if (strcmp(argv[1], "ranvar") == 0) {
			tcl.resultf("%s", ranvar_->name());
			return (TCL_OK);
		}
	}
	return Connector::command(argc, argv);
}

void DelayModel::recv(Packet* p, Handler*)
{
	double delay = ranvar_->value();
	//static int tmp = 0;

	double txt = txtime(p);
	Scheduler& s = Scheduler::instance();
	//printf ("trans %f, delay %f\n", txt, delay);
	s.schedule(target_, p, txt + delay);

	//s.schedule(h, &intr_, txt);
}