public static void FIFO() {
for (int timer = 0; timer >= 0; timer++) {
for (int i = 0; i < processes.length; i++) {
if (waitingQueue[0] == null && (i + 1) == processes.length && processes == null) {
System.out.println("Out of processes, end of simulation.");
return;
}
if ((waitingQueue[0] == null)
&& (i + 1) == processes.length
&& (runningProcess == 0)
&& i == processes.length) {
System.out.println("No processes to run at time " + timer);
}
if ((timer == processes[i].getStartTime())
&& (i + 1) == processes.length
&& (runningProcess == 0)) {
runningProcess = 1;
currentProcess = processes[i];
System.out.println(
"Running process " + currentProcess.getProcessNumber() + " at time " + timer);
}
if (timer == processes[i].getStartTime()
&& (i + 1) == processes.length
&& runningProcess == 1) {
sendToQueue(processes[i]);
System.out.println(
"Process running: process "
+ waitingQueue[0].getProcessNumber()
+ " is waiting at time "
+ timer);
addWaitingTime();
}
if (currentProcess != null
&& (i + 1) == processes.length
&& timer == (currentProcess.getStartTime() + currentProcess.getRunTime())) {
System.out.println("Process " + currentProcess.getProcessNumber() + " finished");
runningProcess = 0;
}
}
}
}
public void sheduleFCFS() {
Process newprocess = new Process();
Process min = newprocess;
int Ttime = 0;
while (processlist.size() > 0) {
if (min == newprocess) {
for (int i = 0; i < processlist.size() - 1; i++) {
if (processlist.get(i).getStartTime() <= processlist.get(i + 1).getStartTime()) {
min = processlist.get(i);
} else {
min = processlist.get(i + 1);
}
}
}
if (min.getServiceTime() == 0) {
if (min != newprocess) {
processlist.remove(min);
min = newprocess;
}
} else if (min.getServiceTime() > 0) {
if (min.getStartTime() <= Ttime) {
timelist.add(min.getProcessId());
min.setServiceTime(min.getServiceTime() - 1);
} else {
timelist.add("Null");
}
}
Ttime++;
}
for (int k = 0; k < timelist.size(); k++) {
System.out.print(timelist.get(k) + " ");
}
}
