EtherHub Class Reference

#include <EtherHub.h>

List of all members.

Protected Member Functions
virtual void	initialize ()
virtual void	handleMessage (cMessage *)
virtual void	finish ()
Protected Attributes
int	ports
long	numMessages

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Detailed Description

Models a wiring hub. It simply broadcasts the received message on all other ports.

Definition at line 27 of file EtherHub.h.

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Member Function Documentation

void EtherHub::finish

(

)

[protected, virtual]

Definition at line 72 of file EtherHub.cc.

{
    simtime_t t = simTime();
    recordScalar("simulated time", t);
    recordScalar("messages handled", numMessages);
    if (t>0)
        recordScalar("messages/sec", numMessages/t);
}

void EtherHub::handleMessage

(

cMessage *

msg

)

[protected, virtual]

Definition at line 48 of file EtherHub.cc.

{
    // Handle frame sent down from the network entity: send out on every other port
    int arrivalPort = msg->getArrivalGate()->getIndex();
    EV << "Frame " << msg << " arrived on port " << arrivalPort << ", broadcasting on all other ports\n";

    numMessages++;

    if (ports<=1)
    {
        delete msg;
        return;
    }
    for (int i=0; i<ports; i++)
    {
        if (i!=arrivalPort)
        {
            bool isLast = (arrivalPort==ports-1) ? (i==ports-2) : (i==ports-1);
            cMessage *msg2 = isLast ? msg : (cMessage*) msg->dup();
            send(msg2,"ethg$o",i);
        }
    }
}

void EtherHub::initialize

(

)

[protected, virtual]

Definition at line 31 of file EtherHub.cc.

{
    numMessages = 0;
    WATCH(numMessages);

    ports = gateSize("ethg");

    // autoconfig: tell everyone that full duplex is not possible over shared media
    EV << "Autoconfig: advertising that we only support half-duplex operation\n";
    for (int i=0; i<ports; i++)
    {
        EtherAutoconfig *autoconf = new EtherAutoconfig("autoconf-halfduplex");
        autoconf->setHalfDuplex(true);
        send(autoconf,"ethg$o",i);
    }
}

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Member Data Documentation

long EtherHub::numMessages [protected]

Definition at line 31 of file EtherHub.h.

Referenced by finish(), handleMessage(), and initialize().

int EtherHub::ports [protected]

Definition at line 30 of file EtherHub.h.

Referenced by handleMessage(), and initialize().

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The documentation for this class was generated from the following files:

• EtherHub.h
• EtherHub.cc