import java.util.concurrent.atomic.AtomicBoolean;

public class TAS {

    static AtomicBoolean occupied = new AtomicBoolean(false);

    public static void main(String[] args) {
        Thread t1 = new Thread(new Proc2(), "1");
        Thread t0 = new Thread(new Proc2(), "0");
        t1.start();
        t0.start();
    }
}

class Proc2 implements Runnable {
    int id; // identifiant du Thread

    public void run() {
        id = Integer.parseInt(Thread.currentThread().getName());

        while (true) { // SC = Section Critique
            System.out.println("Thread " + id + " est hors SC");
            entrer();
            System.out.println("Thread " + id + " est en SC");
            sortir();
        }
    }

    void entrer() {
        System.out.println("Thread " + id + " veut entrer en SC ");
        while (!TAS.occupied.compareAndSet(false, true)) {
            System.out.println(
                    (char) 27 + "[0;90m" + "Thread " + id + " attend que TAS ne soit plus occupé" + (char) 27 + "[0m");
        }
        System.out.println("Thread " + id + " est entré en SC ");
    }

    void sortir() {
        System.out.println("Thread " + id + " sort de SC ");
        TAS.occupied.set(false);
        System.out.println("Thread " + id + " est sortit de SC ");
    }
}