/* * 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 simbad.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(); } }