/*
* Simbad - Robot Simulator
* Copyright (C) 2004 Louis Hugues
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
-----------------------------------------------------------------------------
* $Author: sioulseuguh $
* $Date: 2005/03/17 17:49:37 $
* $Revision: 1.1 $
* $Source: /cvsroot/simbad/src/simbad/sim/Lock.java,v $
*/
package org.myrobotlab.mapper.sim;
/**
* A Simple lock for mutual exclusion.
*/
public class Lock {
boolean locked = false;;
Lock() {
}
/** Obtain the lock. Only one thread at each time. */
public synchronized void lock() {
while (locked) {
try {
wait();
} catch (InterruptedException e) {
}
}
locked = true;
}
/** Release the lock. */
public synchronized void unlock() {
locked = false;
notifyAll();
}
}