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V1.1 

(cast Philosopher)
Test-SJ
Shahnam Javidnia 2025-05-03 16:12:25 +02:00
parent 7723b7fb35
commit 8291fbed75
2 changed files with 10 additions and 11 deletions
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2
pp.A1-CondPhilosophers/src/main/java/pp/IPhilosopher.java
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@ -20,7 +20,7 @@ public interface IPhilosopher {
void signal(); void signal();
boolean isEating(); // boolean isEating();
default void log(int seat, String message) { default void log(int seat, String message) {

19
pp.A1-CondPhilosophers/src/main/java/pp/Philosopher.java
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@ -7,8 +7,8 @@ import static pp.PhilosopherExperiment.*;
public class Philosopher extends Thread implements IPhilosopher { public class Philosopher extends Thread implements IPhilosopher {
private int seat; private int seat;
private IPhilosopher left; private Philosopher left;
private IPhilosopher right; private Philosopher right;
private Lock table; private Lock table;
private Condition canEat; private Condition canEat;
private boolean eating = false; private boolean eating = false;
@ -18,15 +18,14 @@ public class Philosopher extends Thread implements IPhilosopher {
public void setLeft(IPhilosopher left) { public void setLeft(IPhilosopher left) {
// TODO Auto-generated method stub // TODO Auto-generated method stub
// Cast auf Philosopher erforderlich // Cast auf Philosopher erforderlich
this.left = left; this.left = (Philosopher) left;
} }
@Override @Override
public void setRight(IPhilosopher right) { public void setRight(IPhilosopher right) {
// TODO Auto-generated method stub // TODO Auto-generated method stub
// Cast auf Philosopher erforderlich // Cast auf Philosopher erforderlich
this.right = (Philosopher) right;
this.right = right;
} }
@Override @Override
@ -36,7 +35,7 @@ public class Philosopher extends Thread implements IPhilosopher {
@Override @Override
public void setTable(Lock table) { public void setTable(Lock table) {
// TODO Auto-generated method stub// // TODO Auto-generated method stub
this.table = table; this.table = table;
this.canEat = table.newCondition(); this.canEat = table.newCondition();
@ -90,7 +89,7 @@ public class Philosopher extends Thread implements IPhilosopher {
private void beginEating() throws InterruptedException { private void beginEating() throws InterruptedException {
table.lock(); table.lock();
try { try {
while (((Philosopher) left).eating || ((Philosopher) right).eating) { while (left.eating || right.eating) {
log(seat, "wartet"); log(seat, "wartet");
canEat.await(); // wartet, bis signal() von einem anderen Philosophen aufgerufen wird canEat.await(); // wartet, bis signal() von einem anderen Philosophen aufgerufen wird
} }
@ -128,8 +127,8 @@ public class Philosopher extends Thread implements IPhilosopher {
} }
// Gibt zurück, ob dieser Philosoph aktuell isst – wichtig für die Nachbarn. // Gibt zurück, ob dieser Philosoph aktuell isst – wichtig für die Nachbarn.
public boolean isEating() { // public boolean isEating() {
return eating; // return eating;
} // }
} }