Subversion Repositories openrisc

class TLtest extends Thread {

    public static void main (String [] args) {

        Data d = new Data ();

        new ThreadTest (d, "A").start ();

        new ThreadTest (d, "B").start ();

    }

}

class Data {

    private static ThreadLocal owner = new ThreadLocal () {

            public Object initialValue () { return ("0"); }

        };

    /* A thread will call `set' to set a value it wants an instance

       of Data to associate with it and only it. */

    synchronized public void set (String v){owner.set (v);}

    /* A thread will call `get' to get a value it wants an instance

       of Data to associate with it and only it. */

    synchronized public String get (){return (String)owner.get();}

}

class ThreadTest extends Thread {

    public Data d;

    ThreadTest (Data d, String name) {

        super (name);

        this.d = d;

    }

    public void run () {

        int value = 0;

        int ref = 0;

        for (int i = 0; i < 20; i++) {

            int rand = (int)(Math.random ()*20);

            /* Read `value', ref is kept for comparison */

            value = Integer.parseInt (d.get());

            /* change `value' and ref by a random number, store `value'. */

            value += rand; ref += rand;

            d.set (Integer.toString (value));

            try {

                sleep((int)((Math.random() * 20)));

            } catch (InterruptedException e) {}

        }

        /* If a thread didn't have private value to attach to the

           instance of Data, results wouldn't be the same */

        if (ref == value)

            System.out.println ("test OK.");

        else

            System.out.println ("test failed.");

    }

}