🚀 go-pugleaf

Ofir Amitai <amitay@econ.haifa.ac.il> writes:

> Hi
> 
> Thanx for your answer, but could u pleasegive me a more detailed example
> ?

public class Scheduler extends Thread {

  private long period = 0L;
  public Activity target = null; // Make accessors for this

  public Scheduler(int seconds)
  {
    super("Scheduler");
    period = seconds * 1000;
  }

  public synchronized void run()
  {
    while (true)
    {
      try {
        if (target == null)
          wait(); // Nothing to do - yet
        else {
	  // Wake up
          synchronized (target) {
            target.notify();
          }
          Thread.sleep(period);
        }
      }
      catch (InterruptedException ie)
      {
      }
    }
  }
}

public abstract class Activity extends Thread {

  public abstract void activity();

  public Activity(String name)
  {
    super(name);
    setDaemon(true);
    start();
  }
 
  public synchronized void run() {
    while (true) {
      try {
        wait(); // Will be awakened by Scheduler
        activity();
      }
      catch (InterruptedException ie) { }
    }
  }
}