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traveler.cpp
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traveler.cpp
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/*******************************************************************
*
* DESCRIPTION: Atomic Model Traveler
*
* AUTHOR: Amir Barylko & Jorge Beyoglonian
*
* EMAIL: mailto://amir@dc.uba.ar
* mailto://jbeyoglo@dc.uba.ar
*
* DATE: 27/6/1998
*
*******************************************************************/
/** include files **/
#include "traveler.h" // class Traveler
#include "message.h" // class ExternalMessage, InternalMessage
#include "mainsimu.h" // MainSimulator::Instance().getParameter( ... )
#include <iostream>
/** public functions **/
/*******************************************************************
* Function Name: Traveler
* Description:
********************************************************************/
Traveler::Traveler( const string &name)
: Atomic( name )
, travelTimePort( addInputPort(TRAVEL_TIME_DISTRIBUTION) )
, customerIdPort( addInputPort(CUSTOMER_ID) )
, customerIdOutput( addOutputPort( CUSTOMER_OUTPUT) )
{
for(register unsigned short counter=0;counter<MAXIMUM_NUMBER_OF_TRAVELERS;counter++)
travelTimes[counter].customerId=-1;
}
/*******************************************************************
* Function Name: initFunction
* Description: Resetea la lista
* Precondition: El tiempo del proximo evento interno es Infinito
********************************************************************/
Model &Traveler::initFunction()
{
passivate();
return *this ;
}
Time Traveler::getSoonestCompletion()
{
Time soonestCompletion;
int firstRound=1;
for(register unsigned short counter=0;counter<MAXIMUM_NUMBER_OF_TRAVELERS;counter++)
{
if(travelTimes[counter].customerId!=-1)
{
if(firstRound)
{
soonestCompletion=travelTimes[counter].countdownFinish;
firstRound=0;
}
else
if(travelTimes[counter].countdownFinish<soonestCompletion)
soonestCompletion=travelTimes[counter].countdownFinish;
}
}
return soonestCompletion;
}
unsigned short Traveler::countdownInProgress()
{
for(register unsigned short counter=0;counter<MAXIMUM_NUMBER_OF_TRAVELERS;counter++)
if(travelTimes[counter].customerId!=-1)
return 1;
return 0;
}
void Traveler::addCountdown(Value travelTime,Value customerId,Time currentTime)
{
Time countdownFinish(currentTime+Time(0,0,travelTime));
for(register unsigned short counter=0;counter<MAXIMUM_NUMBER_OF_TRAVELERS;counter++)
if(travelTimes[counter].customerId==-1)
{
travelTimes[counter].customerId=(short)customerId;
travelTimes[counter].countdownFinish=countdownFinish;
break;
}
}
/*******************************************************************
* Function Name: internalFunction
* Description:
********************************************************************/
Model &Traveler::internalFunction( const InternalMessage &msg)
{
for(register unsigned short counter=0;counter<MAXIMUM_NUMBER_OF_TRAVELERS;counter++)
if(travelTimes[counter].customerId!=-1)
{
if(travelTimes[counter].countdownFinish == msg.time())
{
travelTimes[counter].customerId=-1;
//check there are more countdowns to do, these will require the scheduling of an
//internal transition
if(countdownInProgress())
{
Time soonestCompletion=getSoonestCompletion();
holdIn(active,soonestCompletion-msg.time());
}
}
}
if(!countdownInProgress())
passivate();
return *this ;
}
/*******************************************************************
* Function Name: outputFunction
* Description:
********************************************************************/
Model &Traveler::outputFunction( const InternalMessage &msg )
{
for(register unsigned short counter=0;counter<MAXIMUM_NUMBER_OF_TRAVELERS;counter++)
if(travelTimes[counter].customerId!=-1)
if(travelTimes[counter].countdownFinish == msg.time())
sendOutput(msg.time(),customerIdOutput,travelTimes[counter].customerId);
return *this ;
}
/*******************************************************************
* Function Name: externalFunction
* Description:
********************************************************************/
Model &Traveler::externalFunction( const ExternalMessage &msg )
{
if(msg.port() == travelTimePort)
travelTime=msg.value();
else if(msg.port()==customerIdPort)
{
/*if there is currently no countdown in progress
start a new countdown*/
if(!countdownInProgress())
{
//msg.value is customerId
addCountdown(travelTime,msg.value(),msg.time());
holdIn(active,Time(0,0,travelTime));
} else {
addCountdown(travelTime,msg.value(),msg.time());
Time soonestCompletion=getSoonestCompletion();
holdIn(active,soonestCompletion-msg.time());
}
}
return *this;
}