Subversion Repositories openrisc

// Test atomic increment via synchronized blocks.

public class SyncTest implements Runnable {

  static int counter;

  public void run() {

    // We cache the .class value; otherwise this code is

    // slow enough that it will time out in some situations.

    Object lock = SyncTest.class;

    for (int n = 0; n < 1000000; n++)

      synchronized (lock) {

        counter++;

      }

  }

  public static void main(String[] args) {

    SyncTest test = new SyncTest();

    Thread[] thr = new Thread[4];

    for (int n = 0; n < thr.length; n++) {

      thr[n] = new Thread(test);

      thr[n].start();

    }

    for (int n = 0; n < thr.length; n++) {

      try {

        thr[n].join();

      } catch (InterruptedException ex) {

      }

    }

    System.out.println(counter == 1000000 * thr.length ?

      "ok" : "fail: " + counter);

  }

}