estimator.h

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/* -*-  Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
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 * Copyright (c) Xerox Corporation 1997. All rights reserved.
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 * XEROX CORPORATION MAKES NO REPRESENTATIONS CONCERNING EITHER THE
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 * @(#) $Header: /nfs/jade/vint/CVSROOT/ns-2/adc/estimator.h,v 1.7 1999/02/12 22:01:29 breslau Exp $
 */

//Estimator unit estimates average load every period interval of time

#ifndef ns_estimator_h
#define ns_estimator_h

#include "connector.h"
#include "measuremod.h"
#include "timer-handler.h"

class Estimator;

class Estimator_Timer : public TimerHandler {
public:
        Estimator_Timer(Estimator *est) : TimerHandler() { est_ = est;}
        
protected:
        virtual void expire(Event *e);
        Estimator *est_;
};

class Estimator : public NsObject {
public:
        Estimator();
        inline double avload() { return double(avload_);};

        inline virtual void change_avload(double incr) { avload_ += incr;}
        inline virtual void newflow(double) {};
        int command(int argc, const char*const* argv); 
        virtual void timeout(int);
        inline void recv(Packet *,Handler *){}
        virtual void start();
        void stop();
        void setmeasmod(MeasureMod *);
        void setactype(const char*);
        inline double &period(){ return period_;}
        void trace(TracedVar* v);
protected:
        MeasureMod *meas_mod_;
        TracedDouble avload_;
        double period_; 
        virtual void estimate()=0;
        Estimator_Timer est_timer_;
        TracedDouble measload_;
        Tcl_Channel tchan_;
        int src_;
        int dst_;
        double omeasload_;
        double oavload_;
        char *actype_;
};

#endif

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