//
// Clock class
//
// 
// This is just a clock that increments in intervals of 0.3 seconds.
// It is needed to timestamp process creations and deletions.
//
import java.lang.Thread;

class Clock extends Thread implements Runnable {

    static float clockTime = (float) 0.0;
    private boolean keep_running = true;

    static gui_aux GUI;

    // Accesor method to GUI
    public static void setGUI(gui_aux obj) {
		GUI = obj;
    }

    // Accesor method to read the clockTime variable
    public static float getTime() {
        return clockTime;
    }

    // Accesor method to modify the clockTime variable
    public static void setTime(float time) {
        clockTime = time;
    }


    public void pause() {
	keep_running = !keep_running;
    }

    public void turnoff() {
	keep_running = false;
    }

    public void run() {
       	while(true)
          if(keep_running){
            try {
                clockTime += 1.0;
		GUI.repaint((long)10);		
                Thread.sleep(1000);
            } catch (InterruptedException e) {}
        }
	else 
	 try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {}
    }

}