ОС Лаб8

import java.util.concurrent.Semaphore;

class domakin {
    private final Semaphore semafor = new Semaphore(1);
    int pocetenbroj;
    int broj_na_lifcinja;

    domakin(int br) {
        this.pocetenbroj = br;

    }

    public String toString() {
        return "" + broj_na_lifcinja;
    }

    public void staviLivcinja(){
        broj_na_lifcinja = pocetenbroj;
        System.out.println("Resetirav livcinja");
    }

    public void sakamLifce() throws InterruptedException{
        semafor.acquire();
        izvadiLivce();
    }

    public synchronized void izvadiLivce(){
        broj_na_lifcinja--;
        semafor.release();
    }


}

class ucesnik {

    String id;

    ucesnik(String id) {
        this.id = id;
    }

    public String toString() {
        return id;
    }

    //Edno resenie
    public void zemiLivce(domakin dom){
        dom.izvadiLivce();
        System.out.println("Ucesnik " + id + " zema livce!");
    }

}

public class lab8 {
    public static void main(String[] args) {

        domakin dom = new domakin(3);
        ucesnik u1 = new ucesnik("1");
        ucesnik u2 = new ucesnik("2");
        ucesnik u3 = new ucesnik("3");


        while(true){
            dom.staviLivcinja();
            cekaj();
            u1.zemiLivce(dom);
            cekaj();
            u2.zemiLivce(dom);
            cekaj();
            u3.zemiLivce(dom);
            cekaj();
        }


    }

    public static void cekaj(){
        try {
            Thread.sleep(500);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}