46 lines
1.4 KiB
Java
46 lines
1.4 KiB
Java
public class Peterson {
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static int tour = 0;
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static boolean[] demande = { false, false };
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public static void main(String[] args) {
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Thread t1 = new Thread(new Proc(), "1");
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Thread t2 = new Thread(new Proc(), "0");
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t1.start();
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t2.start();
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}
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}
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class Proc implements Runnable {
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int id; // identifiant du Thread
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int di; // identifiant de l'autre Thread
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public void run() {
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id = Integer.parseInt(Thread.currentThread().getName());
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di = (id + 1) % 2;
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while (true) { // SC = Section Critique
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System.out.println("Thread " + id + " est hors SC");
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entrer();
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System.out.println("Thread " + id + " est en SC");
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sortir();
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}
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}
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synchronized void entrer() {
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System.out.println("Thread " + id + " veut entrer en SC ");
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Peterson.demande[id] = true;
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Peterson.tour = di;
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while ((Peterson.tour != id) && (Peterson.demande[di])) {
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System.out.println(
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(char) 27 + "[0;90m" + "Thread " + id + " attend la fin SC du Thread " + di + (char) 27 + "[0m");
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}
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System.out.println("Thread " + id + " est entré en SC ");
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}
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synchronized void sortir() {
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System.out.println("Thread " + id + " veut sortir de SC ");
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Peterson.demande[id] = false;
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System.out.println("Thread " + id + " est sortit de SC ");
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}
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} |