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Controller.java
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Controller.java
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import java.util.*;
public class Controller {
public static final int END_WORLD_TIME = 100;
public static final double LAMBDA = 50.0;
public static final double Ts = 0.015;
public static double currentTime;
public static Event head;
public static int scheduleLength;
/////////////////////////// CALENDAR METHODS /////////////////////////////////
public static void add(Event e){
Event currentEvent = head;
while (currentEvent.getNext() != null && e.getTimestamp() > currentEvent.getNext().getTimestamp()) {
currentEvent = currentEvent.getNext();
}
if(currentEvent.getNext() == null){ // reached end of LL
currentEvent.setNext(e);
} else { // New event has to be placed somewhere in middle of LL
Event temp = currentEvent.getNext();
currentEvent.setNext(e);
e.setNext(temp);
}
scheduleLength++;
}
public static void printCalendar(Event e){
while (e.getNext() != null) {
System.out.println(e);
e = e.getNext();
}
}
public static void initWorld(){
head = new Event(getExponential(LAMBDA), Event.Type.BIRTH, 0);
head.next = new Event(getExponential(LAMBDA), Event.Type.LOG, 0);
}
public static double getExponential(double lambda){
double r = Math.random();
return -Math.log(1 - r) / lambda;
}
public static void main(String[] args) {
currentTime= 0;
initWorld();
MM1System ourSystem = new MM1System(Ts);
printCalendar(head);
while(currentTime < END_WORLD_TIME * 2 && head != null){
Event deathOrLog = head.myFunction(ourSystem, currentTime, Ts, getExponential(LAMBDA));
// head was a BIRTH, head.myFunction() adds a corresponding DEATH and a new BIRTH to the calendar
if(deathOrLog != null && deathOrLog.getType() == Event.Type.DEATH){
Event birth = new Event(currentTime + getExponential(LAMBDA), Event.Type.BIRTH, head.getIndex() + 1);
add(birth);
add(deathOrLog);
// head was a LOG, head.myFunction() adds a new LOG to the calendar
} else if (deathOrLog != null && deathOrLog.getType() == Event.Type.LOG){
add(deathOrLog);
}
head = head.getNext();
// new head is a BIRTH, update global time
if(head.getType() == Event.Type.BIRTH){
currentTime = head.getTimestamp();
}
}
// report averages
double[] allStats = ourSystem.getAllStats();
System.out.println("///////////////////////////////////////////////////////");
System.out.println();
System.out.println("Avg Q: " + allStats[0] + " Avg W: " + allStats[1] + " Avg Tq: " + allStats[2] + " Avg Tw: " + allStats[3]);
System.out.println();
System.out.println("///////////////////////////////////////////////////////");
}
}