void RAIDDisk::executeProcess() {
RAIDRequest *recvEvent;
RAIDDiskState *myState;
RAIDRequest *newEvent;
RAIDRequest *tmpEvent;
IntVTime recvTime(0);
int seekDist;
double seekTime, a, b, c;
int nextCylinder;
int timeDelay = 1;
int objectId;
IntVTime sendTime = dynamic_cast<const IntVTime&> (getSimulationTime());
myState = (RAIDDiskState *) getState();
while (true == haveMoreEvents()) {
recvEvent = (RAIDRequest*) getEvent();
if (recvEvent != NULL) {
SimulationObject *recvr = getObjectHandle(
recvEvent->getSourceObject());
string receiverName = recvr->getName();
objectId=recvr->getObjectID()->getSimulationObjectID();
tmpEvent = new RAIDRequest(sendTime, sendTime + 1, this, recvr);
*tmpEvent = *recvEvent;
nextCylinder = (tmpEvent->getStartStripe() / (sectorsPerTrack
* tracksPerCyl)) % numCylinders;
tmpEvent->setStartCylinder(nextCylinder);
tmpEvent->setStartSector(
tmpEvent->getStartStripe() % sectorsPerTrack);
seekDist = nextCylinder - myState->getCurrentCylinder();
myState = (RAIDDiskState*) getState();
if (seekDist < 0) {
seekDist = abs(seekDist);
}
if (seekDist != 0) {
a = (-10 * minSeekTime + 15 * avgSeekTime - 5 * maxSeekTime)
/ (3 * sqrt(numCylinders));
b = (7 * minSeekTime - 15 * avgSeekTime + 8 * maxSeekTime) / (3
* numCylinders);
c = minSeekTime;
if (a > 0 && b > 0) {
seekTime = a * sqrt(seekDist - 1) + b * (seekDist - 1) + c;
} else {
cerr << "Disk Model parameters are not correct for model"
<< endl;
seekTime = 0;
}
} else {
seekTime = 0;
}
recvTime = max(sendTime.getApproximateIntTime(), lastEventTime[receiverName])
+ int(seekTime + 0.5 * revolutionTime);
// recvTime = lastEventTime + int(seekTime + 0.5 * revolutionTime);
newEvent = new RAIDRequest(sendTime, recvTime, this, recvr);
//delete lastEventTime;
lastEventTime[receiverName] = recvTime.getApproximateIntTime();
//cout << "LastEvent Time for the Disk = " << lastEventTime << endl;
#if 0
recvTime = VTime(getSimulationTime() +
int(seekTime + 0.5*revolutionTime) + timeDelay++);
newEvent = new RAIDRequest(sendTime, recvTime, this, recvr);
#endif
*newEvent = *tmpEvent;
delete tmpEvent;
myState->setCurrentCylinder(nextCylinder);
// Send event back to source.
recvr->receiveEvent(newEvent);
} // End of if (event != null)
} // End of while "have more events" loop
}
