83 lines
2.9 KiB
Java
83 lines
2.9 KiB
Java
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/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Delegator.java, released
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* Sep 27, 2000.
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*
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* The Initial Developer of the Original Code is
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* Matthias Radestock. <matthias@sorted.org>.
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* Portions created by the Initial Developer are Copyright (C) 2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* the GNU General Public License Version 2 or later (the "GPL"), in which
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* case the provisions of the GPL are applicable instead of those above. If
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* you wish to allow use of your version of this file only under the terms of
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* the GPL and not to allow others to use your version of this file under the
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* MPL, indicate your decision by deleting the provisions above and replacing
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* them with the notice and other provisions required by the GPL. If you do
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* not delete the provisions above, a recipient may use your version of this
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* file under either the MPL or the GPL.
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*
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* ***** END LICENSE BLOCK ***** */
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// API class
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package org.mozilla.javascript;
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/**
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* This class provides support for implementing Java-style synchronized
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* methods in Javascript.
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*
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* Synchronized functions are created from ordinary Javascript
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* functions by the <code>Synchronizer</code> constructor, e.g.
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* <code>new Packages.org.mozilla.javascript.Synchronizer(fun)</code>.
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* The resulting object is a function that establishes an exclusive
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* lock on the <code>this</code> object of its invocation.
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*
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* The Rhino shell provides a short-cut for the creation of
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* synchronized methods: <code>sync(fun)</code> has the same effect as
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* calling the above constructor.
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*
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* @see org.mozilla.javascript.Delegator
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* @author Matthias Radestock
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*/
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public class Synchronizer extends Delegator {
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/**
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* Create a new synchronized function from an existing one.
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*
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* @param obj the existing function
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*/
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public Synchronizer(Scriptable obj) {
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super(obj);
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}
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/**
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* @see org.mozilla.javascript.Function#call
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*/
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@Override
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public Object call(Context cx, Scriptable scope, Scriptable thisObj,
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Object[] args)
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{
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synchronized(thisObj instanceof Wrapper ? ((Wrapper)thisObj).unwrap() : thisObj) {
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return ((Function)obj).call(cx,scope,thisObj,args);
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}
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}
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}
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