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Java > Open Source Codes > salsa > util > ThreadUtils


1 /*
2 ** Salsa - Swing Add-On Suite
3 ** Copyright (c) 2001, 2002 by Gerald Bauer
4 **
5 ** This program is free software.
6 **
7 ** You may redistribute it and/or modify it under the terms of the GNU
8 ** General Public License as published by the Free Software Foundation.
9 ** Version 2 of the license should be included with this distribution in
10 ** the file LICENSE, as well as License.html. If the license is not
11 ** included with this distribution, you may find a copy at the FSF web
12 ** site at 'www.gnu.org' or 'www.fsf.org', or you may write to the
13 ** Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139 USA.
14 **
15 ** THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY OF ANY KIND,
16 ** NOT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY. THE AUTHOR
17 ** OF THIS SOFTWARE, ASSUMES _NO_ RESPONSIBILITY FOR ANY
18 ** CONSEQUENCE RESULTING FROM THE USE, MODIFICATION, OR
19 ** REDISTRIBUTION OF THIS SOFTWARE.
20 **
21 */
22
23 package salsa.util;
24
25 import javax.swing.*;
26
27 public class ThreadUtils
28 {
29    public static void ensureGuiThread()
30    {
31       // throws an exception if not invoked by the event/gui thread
32
33       if( SwingUtilities.isEventDispatchThread() )
34          return;
35
36       throw new RuntimeException JavaDoc( "only the gui thread should invoke this method" );
37    }
38
39    public static void ensureWorkerThread()
40    {
41       if( !SwingUtilities.isEventDispatchThread() )
42          return;
43
44       throw new RuntimeException JavaDoc( "only worker threads should invoke this method" );
45    }
46
47 }
48
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