#include <DropsGenerator.h>

Protected Member Functions
virtual void	initialize ()
virtual void	handleMessage (cMessage *msg)
virtual void	parseVector (const char *vector)
virtual void	finish ()
Protected Attributes
unsigned int	numPackets
unsigned int	numDropped
bool	generateFurtherDrops
std::vector< unsigned int >	dropsVector

Detailed Description

Drops generator.

Definition at line 30 of file DropsGenerator.h.

Member Function Documentation

void DropsGenerator::finish ( ) [protected, virtual]

Definition at line 95 of file DropsGenerator.cc.

{
    recordScalar("total packets", numPackets);
    recordScalar("total dropped", numDropped);
}

void DropsGenerator::handleMessage ( cMessage * msg ) [protected, virtual]

Definition at line 44 of file DropsGenerator.cc.

{
    numPackets++;

    if (generateFurtherDrops)
    {
        if (numPackets==dropsVector[0])
        {
            EV << "DropsGenerator: Dropping packet number " << numPackets << " " << msg << endl;
            delete msg;
            numDropped++;
            dropsVector.erase(dropsVector.begin());
            if (dropsVector.size()==0)
            {
                EV << "DropsGenerator: End of dropsVector reached." << endl;
                generateFurtherDrops = false;
            }
        }
        else
            {send(msg, "out");}
    }
    else
        {send(msg, "out");}
}

void DropsGenerator::initialize ( ) [protected, virtual]

Definition at line 22 of file DropsGenerator.cc.

{
    numPackets = 0;
    numDropped = 0;
    generateFurtherDrops = false;

    WATCH(numPackets);
    WATCH(numDropped);
    WATCH(generateFurtherDrops);

    const char *vector = par("dropsVector");
    parseVector(vector);

    if (dropsVector.size()==0)
        {EV << "DropsGenerator: Empty dropsVector" << endl;}
    else
    {
        EV << "DropsGenerator: dropsVector=" << vector << endl;
        generateFurtherDrops = true;
    }
}

void DropsGenerator::parseVector ( const char * vector ) [protected, virtual]

Definition at line 69 of file DropsGenerator.cc.

Referenced by initialize().

{
    const char *v = vector;
    while (*v)
    {
        // parse packet numbers
        while (isspace(*v)) v++;
        if (!*v || *v==';') break;
        if (!isdigit(*v))
            throw cRuntimeError("syntax error in dropsVector: packet number expected");
        if (dropsVector.size()>0 && dropsVector.back() >= (unsigned int)atoi(v))
            throw cRuntimeError("syntax error in dropsVector: packet numbers in ascending order expected");

        dropsVector.push_back(atoi(v));
        while (isdigit(*v)) v++;

        // skip delimiter
        while (isspace(*v)) v++;
        if (!*v) break;
        if (*v!=';')
            throw cRuntimeError("syntax error in dropsVector: separator ';' missing");
        v++;
        while (isspace(*v)) v++;
    }
}