/*
Copyright (C) 2001, 2006 United States Government
as represented by the Administrator of the
National Aeronautics and Space Administration.
All Rights Reserved.
*/
package gov.nasa.worldwind.util;

/**
 * @author tag
 * @version $Id: TaskService.java 2455 2007-07-28 00:32:43Z tgaskins $
 */
public interface TaskService
{
    void shutdown(boolean immediately);

    boolean contains(Runnable runnable);

    /**
     * Enqueues a task to run.
     *
     * @param runnable the task to add
     * @throws IllegalArgumentException if <code>runnable</code> is null
     */
    void addTask(Runnable runnable);

    boolean isFull();

    boolean hasActiveTasks();
}