Imbus/EITG01-Lab1
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Imbus 2023-09-29 01:34:06 +02:00
parent ba2fb856fa
commit 2189ba86c4
4 changed files with 66 additions and 63 deletions
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2
app/src/main/java/simulation/Event.java
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@ -1,6 +1,6 @@
package simulation;
class Event{
class Event {
public double eventTime;
public int eventType;
public Event next;

52
app/src/main/java/simulation/EventList.java
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@ -1,33 +1,35 @@
package simulation;
public class EventList{
public class EventList {
private Event list, last;
EventList(){
EventList() {
list = new Event();
last = new Event();
list.next = last;
last = new Event();
list.next = last;
}
public void InsertEvent(int type, double TimeOfEvent){
Event dummy, predummy;
Event newEvent = new Event();
newEvent.eventType = type;
newEvent.eventTime = TimeOfEvent;
predummy = list;
dummy = list.next;
while ((dummy.eventTime < newEvent.eventTime) & (dummy != last)){
predummy = dummy;
dummy = dummy.next;
}
predummy.next = newEvent;
newEvent.next = dummy;
}
public Event FetchEvent(){
Event dummy;
dummy = list.next;
public void InsertEvent(int type, double TimeOfEvent) {
Event dummy, predummy;
predummy = this.list;
dummy = this.list.next;
Event newEvent = new Event();
newEvent.eventType = type;
newEvent.eventTime = TimeOfEvent;
while ((dummy.eventTime < newEvent.eventTime) && (dummy != last)) {
predummy = dummy;
dummy = dummy.next;
}
predummy.next = newEvent;
newEvent.next = dummy;
}
public Event FetchEvent() {
Event dummy = list.next;
list.next = dummy.next;
dummy.next = null;
return dummy;

34
app/src/main/java/simulation/MainSimulation.java
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@ -2,20 +2,22 @@ package simulation;
import java.io.*;
public class MainSimulation extends GlobalSimulation{
public static void main(String[] args) throws IOException {
Event actEvent;
EventList myEventList = new EventList();
State actState = new State(myEventList);
myEventList.InsertEvent(ARRIVAL, 0);
myEventList.InsertEvent(MEASURE, 5);
while (time < 50000){
actEvent = myEventList.FetchEvent();
time = actEvent.eventTime;
actState.TreatEvent(actEvent);
}
System.out.println("Mean number of customers: " + 1.0*actState.accumulated/actState.noMeasurements);
System.out.println("Number of measurements done: " + actState.noMeasurements);
}
public class MainSimulation extends GlobalSimulation {
public static void main(String[] args) throws IOException {
Event actEvent;
EventList myEventList = new EventList();
State actState = new State(myEventList);
myEventList.InsertEvent(ARRIVAL, 0);
myEventList.InsertEvent(MEASURE, 5);
while (MainSimulation.time < 50000) {
actEvent = myEventList.FetchEvent();
MainSimulation.time = actEvent.eventTime;
actState.TreatEvent(actEvent);
}
System.out.println("Mean number of customers: " + (double) actState.accumulated / actState.noMeasurements);
System.out.println("Number of measurements done: " + actState.noMeasurements);
}
}

41
app/src/main/java/simulation/State.java
View file

@ -2,25 +2,24 @@ package simulation;
import java.util.*;
class State extends GlobalSimulation{
class State extends GlobalSimulation {
public int numberInQueue = 0, accumulated = 0, noMeasurements = 0;
private EventList myEventList;
Random slump = new Random();
State(EventList x){
static Random slump = new Random();
State(EventList x) {
myEventList = x;
}
private void InsertEvent(int event, double timeOfEvent){
private void InsertEvent(int event, double timeOfEvent) {
myEventList.InsertEvent(event, timeOfEvent);
}
public void TreatEvent(Event x){
switch (x.eventType){
public void TreatEvent(Event x) {
switch (x.eventType) {
case ARRIVAL:
arrival();
break;
@ -32,25 +31,25 @@ class State extends GlobalSimulation{
break;
}
}
private double generateMean(double mean){
return 2*mean*slump.nextDouble();
private double generateMean(double mean) {
return 2 * mean * slump.nextDouble();
}
private void arrival(){
private void arrival() {
if (numberInQueue == 0)
InsertEvent(READY, time + generateMean(1));
numberInQueue++;
InsertEvent(ARRIVAL, time + generateMean(2));
}
private void ready(){
private void ready() {
numberInQueue--;
if (numberInQueue > 0)
InsertEvent(READY, time + generateMean(1));
}
private void measure(){
private void measure() {
accumulated = accumulated + numberInQueue;
noMeasurements++;
InsertEvent(MEASURE, time + generateMean(5));