HackThread.java

/*
 *  This file is part of the Haven & Hearth game client.
 *  Copyright (C) 2009 Fredrik Tolf <fredrik@dolda2000.com>, and
 *                     Björn Johannessen <johannessen.bjorn@gmail.com>
 *
 *  Redistribution and/or modification of this file is subject to the
 *  terms of the GNU Lesser General Public License, version 3, as
 *  published by the Free Software Foundation.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  Other parts of this source tree adhere to other copying
 *  rights. Please see the file `COPYING' in the root directory of the
 *  source tree for details.
 *
 *  A copy the GNU Lesser General Public License is distributed along
 *  with the source tree of which this file is a part in the file
 *  `doc/LPGL-3'. If it is missing for any reason, please see the Free
 *  Software Foundation's website at <http://www.fsf.org/>, or write
 *  to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 *  Boston, MA 02111-1307 USA
 */

package haven;

import java.util.HashSet;
import java.util.Set;

public class HackThread extends Thread {
	public HackThread(ThreadGroup tg, Runnable target, String name) {
		/*
		 * Hack #1: Override stupid security-managers' whims to move threads
		 * into whimsical thread-groups.
		 */
		super((tg == null) ? tg() : tg, target, name);
	}

	public HackThread(Runnable target, String name) {
		this(null, target, name);
	}

	public HackThread(String name) {
		this(null, name);
	}

	public static ThreadGroup tg() {
		return (Thread.currentThread().getThreadGroup());
	}

	/*
	 * Hack #2: Allow hooking into thread interruptions to as to interrupt
	 * normally uninterruptible stuff like Sockets. For a more thorough
	 * explanation why this is necessary, see HackSocket.
	 */
	private Set<Runnable> ils = new HashSet<Runnable>();

	public void addil(Runnable r) {
		synchronized (ils) {
			ils.add(r);
		}
	}

	public void remil(Runnable r) {
		synchronized (ils) {
			ils.remove(r);
		}
	}

	public void interrupt() {
		super.interrupt();
		synchronized (ils) {
			for (Runnable r : ils)
				r.run();
		}
	}
}