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Java > Open Source Codes > org > jboss > ejb > plugins > BeanSemaphore


1 /*
2 * JBoss, Home of Professional Open Source
3 * Copyright 2005, JBoss Inc., and individual contributors as indicated
4 * by the @authors tag. See the copyright.txt in the distribution for a
5 * full listing of individual contributors.
6 *
7 * This is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU Lesser General Public License as
9 * published by the Free Software Foundation; either version 2.1 of
10 * the License, or (at your option) any later version.
11 *
12 * This software is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this software; if not, write to the Free
19 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21 */
22 package org.jboss.ejb.plugins;
23
24
25 import org.jboss.util.Semaphore;
26
27
28 /**
29  * Allow ability to mark a Semaphore as no longer valid for mutex locking
30  *
31  * @author <a HREF="mailto:bill@burkecentral.com">Bill Burke</a>
32  * @version $Revision: 37459 $
33  */
34 public class BeanSemaphore extends Semaphore
35 {
36     private boolean m_valid = true;
37     public BeanSemaphore(int allowed)
38     {
39     super(allowed);
40     m_valid = true;
41     }
42
43     public void invalidate()
44     {
45     m_valid = false;
46     }
47
48     public boolean isValid()
49     {
50     return m_valid;
51     }
52     
53 }
54
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