ParetoChurn.h

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//
// Copyright (C) 2006 Institut fuer Telematik, Universitaet Karlsruhe (TH)
//
// 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
//

#ifndef __PARETOCHURN_H_
#define __PARETOCHURN_H_

#include <ChurnGenerator.h>

class TransportAddress;
class GlobalStatistics;

class ParetoChurn : public ChurnGenerator
{
public:
    void handleMessage(cMessage* msg);
    void initializeChurn();
    ParetoChurn() { initFinishedTimer = NULL; };
    ~ParetoChurn();

protected:
    struct node_stat {
        double l;
        double d;
        bool alive;
    };
    void updateDisplayString();
    void createNode(double lifetime, double meanLifetime, double meanDeadtime, bool initialize);
    void deleteNode(TransportAddress& addr, double meanLifetime, double meanDeadtime);

        double shiftedPareto(double a, double b, int rng=0);

        double betaByMean(double mean, double alpha=3);

        double individualMeanTime(double mean);

        double individualLifetime(double mean);

        double residualLifetime(double mean);

        void scheduleCreateNodeAt(double creationTime, double lifetime, double meanLifetime, double meanDeadtime);



private:
        GlobalStatistics* globalStatistics;         //*< pointer to GlobalStatistics module in this node */

        double initialMean; 
        double initialDeviation; 
        double lifetimeMean; 
        double deadtimeMean; 

        simtime_t lastCreatetime;
        simtime_t lastDeletetime;

        cMessage* initFinishedTimer; 
};

#endif