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/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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 the Initial Developer are Copyright (C) 2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License Version 2 or later (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
* MPL, indicate your decision by deleting the provisions above and replacing
* 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 MPL or the GPL.
*
* ***** END LICENSE BLOCK ***** */
// API class
package 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 instanceof Wrapper ? ((Wrapper)thisObj).unwrap() : thisObj) {
return ((Function)obj).call(cx,scope,thisObj,args);
}
}
}
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