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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
package com.sun.star.lib.sandbox;
public class WeakRef {
static private final boolean DEBUG = false;
private int refCnt;
private Object ref;
private Object key;
WeakRef(Object key, Object ref) {
this.key = key;
this.ref = ref;
}
public Object getRef() {
return ref;
}
public Object getKey() {
return key;
}
int getRefCount() {
return refCnt;
}
// the following two methods where synchronized, but need not to be
public void incRefCnt() {
refCnt ++;
}
public synchronized void decRefCnt() {
refCnt --;
if(refCnt <= 0) {
WeakTable.remove(key);
if(DEBUG)System.err.println("#### WeakRef - object freeed:" + key + " " + ref);
if(ref instanceof Disposable) {
((Disposable)ref).dispose();
}
ref = null;
}
}
public String toString() {
return "WeakRef - " + key + " " + ((ref == null) ? "null" : ref.toString());
}
}
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