//-*-java-*-

Main {
  public static void main(String args[]) (@
    BStack stack = new BStack();
    new Thread(new Stacker(stack, BStack.PUT)).start();
    try {
//      Thread.sleep(2000);
      Thread.sleep(20);
    } catch(InterruptedException e) {}
    new Thread(new Stacker(stack, BStack.TAKE)).start();
  @)
}

Stacker {
  (@
  private BStack _stack;
  private int _func;

  Stacker(BStack stack, int func) {
    _stack=stack;
    _func=func;
  }
  @)

  public void run() (@
    switch(_func) {
    case BStack.PUT: beginPutting(); break;
    case BStack.TAKE: beginTaking(); break;
    }
  @)

  private void beginPutting() (@{
    Random rand = new Random();
    for(int i=0;i<6;i++) {
      double rv = rand.nextDouble();
      System.out.println("Attempting put("+rv+") 		@ "
	+System.currentTimeMillis());
      _stack.put(rv);
      System.out.println("Put: "+rv+" @ 			"
	+System.currentTimeMillis());
      try {
        Thread.sleep(800);
      } catch(InterruptedException e) {}
    }
  }@)

  private void beginTaking() (@ {
    for(int i=0;i<6;i++) {
      System.out.println("Attempting take() 			@ "
	+System.currentTimeMillis());
      double took = _stack.take();
      System.out.println("Took: "+took+" 			@ "
	+System.currentTimeMillis());
      try {
	// Thread.sleep(400);
	Thread.sleep(20);
      } catch(InterruptedException e) {}
    }
  }@)
}

BStack {

  (@
   public final int SIZE = 6;
   private double[] stuff = new double[SIZE];
   // private int[] stuff = new int[2];
   private int count1 = 0;
   public static final int PUT = 1;
   public static final int TAKE = 2;
   @)
  
  public double put(double thing) (@{
    stuff[count1++] = thing;
    return thing;
  }@)

  public double take() (@{
    return stuff[--count1];
  }@)    
}