/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- * * The contents of this file are subject to the Netscape Public * License Version 1.1 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.mozilla.org/NPL/ * * Software distributed under the License is distributed on an "AS * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or * implied. See the License for the specific language governing * rights and limitations under the License. * * The Original Code is Delegator.java, released Sep 27, 2000. * * The Initial Developer of the Original Code is Matthias Radestock. * <matthias@sorted.org>. Portions created by Matthias Radestock are * Copyright (C) 2000 Matthias Radestock. All Rights Reserved. * * Contributor(s): * * Matthias Radestock, Redfig Ltd (http://www.redfig.com) * Matthias Radestock, LShift Ltd (http://www.lshift.net) * * Alternatively, the contents of this file may be used under the * terms of the GNU Public License (the "GPL"), in which case the * provisions of the GPL are applicable instead of those above. * If you wish to allow use of your version of this file only * under the terms of the GPL and not to allow others to use your * version of this file under the NPL, indicate your decision by * deleting the provisions above and replace them with the notice * and other provisions required by the GPL.  If you do not delete * the provisions above, a recipient may use your version of this * file under either the NPL or the GPL. */// API classpackage org.mozilla.javascript;/** * This class provides support for implementing Java-style synchronized * methods in Javascript. * * Synchronized functions are created from ordinary Javascript * functions by the <code>Synchronizer</code> constructor, e.g. * <code>new Packages.org.mozilla.javascript.Synchronizer(fun)</code>. * The resulting object is a function that establishes an exclusive * lock on the <code>this</code> object of its invocation. * * The Rhino shell provides a short-cut for the creation of * synchronized methods: <code>sync(fun)</code> has the same effect as * calling the above constructor. * * @see org.mozilla.javascript.Delegator * @author Matthias Radestock */public class Synchronizer extends Delegator {    /**     * Create a new synchronized function from an existing one.     *     * @param obj the existing function     */    public Synchronizer(Scriptable obj) {        super(obj);    }    /**     * @see org.mozilla.javascript.Function#call     */    public Object call(Context cx, Scriptable scope, Scriptable thisObj,                       Object[] args)    {        synchronized(thisObj) {            return ((Function)obj).call(cx,scope,thisObj,args);        }    }}