ms-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.
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 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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#ifndef lint
static const char rcsid[] =
    "@(#) $Header: /nfs/jade/vint/CVSROOT/ns-2/adc/ms-adc.cc,v 1.7 2005/08/26 05:05:27 tomh Exp $";
#endif

//Measured Sum Admission control

#include "adc.h"
#include <stdlib.h>

class MS_ADC : public ADC {
public:
    MS_ADC();
    void rej_action(int, double,int);
protected:
    int admit_flow(int,double,int);
    inline virtual double get_rate(int /*cl*/, double r,int /*b*/) 
        { return r ; };
    double utilization_;
};

MS_ADC::MS_ADC() 
{
    bind("utilization_",&utilization_);
    type_ = new char[5];
    strcpy(type_, "MSAC");
}

void MS_ADC::rej_action(int cl,double r,int b)
{
    double rate = get_rate(cl,r,b);
    est_[cl]->change_avload(-rate);
}


int MS_ADC::admit_flow(int cl,double r,int b)
{
    double rate = get_rate(cl,r,b);
    if (rate+est_[cl]->avload() < utilization_* bandwidth_) {
        est_[cl]->change_avload(rate);
        return 1;
    }
    return 0;
}


static class MS_ADCClass : public TclClass {
public:
    MS_ADCClass() : TclClass("ADC/MS") {}
    TclObject* create(int,const char*const*) {
        return (new MS_ADC());
    }
}class_ms_adc;


/* a measured sum algorithm that uses peak rather than token rate
 */

class MSPK_ADC : public MS_ADC {
public:
    MSPK_ADC() { };
protected:
    inline virtual double get_rate(int cl,double r,int b){
        return(peak_rate(cl,r,b));};
};

static class MSPK_ADCClass : public TclClass {
public:
    MSPK_ADCClass() : TclClass("ADC/MSPK") {}
    TclObject* create(int,const char*const*) {
        return (new MSPK_ADC());
    }
} class_mspk_adc;

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