actp-adc.cc
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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.
- */
- #ifndef lint
- static const char rcsid[] =
- "@(#) $Header: /cvsroot/nsnam/ns-2/adc/actp-adc.cc,v 1.6 2005/08/26 05:05:27 tomh Exp $";
- #endif
- //Acceptance region Tangent at Peak Admission Control
- #include "adc.h"
- #include <stdlib.h>
- #include <math.h>
- class ACTP_ADC : public ADC {
- public:
- ACTP_ADC();
- void teardown_action(int,double,int);
- void rej_action(int,double,int);
- protected:
- int admit_flow(int,double,int);
- int rejected_;
- double s_;
- double sump_;
- };
- ACTP_ADC::ACTP_ADC() : rejected_(0), sump_(0)
- {
- bind("s_", &s_);
- type_ = new char[5];
- strcpy(type_, "ACTP");
- }
- int ACTP_ADC::admit_flow(int cl,double r,int b)
- {
- //get peak rate this class of flow
- double p=peak_rate(cl,r,b);
- if (backoff_) {
- if (rejected_)
- return 0;
- }
-
- //fprintf (stderr,"%f %f %fn",sump_*(1-exp(-p*s_)),exp(-p*s_)*est_[cl]->avload(),est_[cl]->avload());
- if (sump_*(1-exp(-p*s_))+exp(-p*s_)*est_[cl]->avload() <= bandwidth_) {
- sump_+= p;
- if (dobump_) {
- est_[cl]->change_avload(p);
- }
- return 1;
- }
- else {
- rejected_=1;
- return 0;
- }
- }
- void ACTP_ADC::rej_action(int cl,double r,int b)
- {
- double p=peak_rate(cl,r,b);
- sump_ -= p;
- }
- void ACTP_ADC::teardown_action(int cl,double r,int b)
- {
- rejected_=0;
- double p=peak_rate(cl,r,b);
- sump_ -= p;
- }
- static class ACTP_ADCClass : public TclClass {
- public:
- ACTP_ADCClass() : TclClass("ADC/ACTP") {}
- TclObject* create(int,const char*const*) {
- return (new ACTP_ADC());
- }
- }class_actp_adc;