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Java > Open Source Codes > com > icesoft > faces > async > render > RejectionHandler


1 /*
2  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
3  *
4  * "The contents of this file are subject to the Mozilla Public License
5  * Version 1.1 (the "License"); you may not use this file except in
6  * compliance with the License. You may obtain a copy of the License at
7  * http://www.mozilla.org/MPL/
8  *
9  * Software distributed under the License is distributed on an "AS IS"
10  * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
11  * License for the specific language governing rights and limitations under
12  * the License.
13  *
14  * The Original Code is ICEfaces 1.5 open source software code, released
15  * November 5, 2006. The Initial Developer of the Original Code is ICEsoft
16  * Technologies Canada, Corp. Portions created by ICEsoft are Copyright (C)
17  * 2004-2006 ICEsoft Technologies Canada, Corp. All Rights Reserved.
18  *
19  * Contributor(s): _____________________.
20  *
21  * Alternatively, the contents of this file may be used under the terms of
22  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"
23  * License), in which case the provisions of the LGPL License are
24  * applicable instead of those above. If you wish to allow use of your
25  * version of this file only under the terms of the LGPL License and not to
26  * allow others to use your version of this file under the MPL, indicate
27  * your decision by deleting the provisions above and replace them with
28  * the notice and other provisions required by the LGPL License. If you do
29  * not delete the provisions above, a recipient may use your version of
30  * this file under either the MPL or the LGPL License."
31  *
32  */
33
34 package com.icesoft.faces.async.render;
35
36 import edu.emory.mathcs.backport.java.util.concurrent.RejectedExecutionHandler;
37 import edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor;
38 import org.apache.commons.logging.Log;
39 import org.apache.commons.logging.LogFactory;
40
41 /**
42  * This is the custom RejectedExecutionHandler supplied to the
43  * ThreadExecutorPool and is used as a callback when the pool cannot execute a
44  * task. For now, all it does is log a warning. Rejection warnings would
45  * typically indicate that the queue capacity or thread pool size needs to be
46  * adjusted.
47  *
48  * @author ICEsoft Technologies, Inc.
49  */
50 class RejectionHandler implements RejectedExecutionHandler {
51
52     private static Log log = LogFactory.getLog(RejectionHandler.class);
53
54     public void rejectedExecution(Runnable JavaDoc runnable,
55                                   ThreadPoolExecutor threadPoolExecutor) {
56
57         //If we start seeing rejections then the work queue capacity or
58 //thread numbers may need to be adjusted.
59 if (log.isWarnEnabled()) {
60             log.warn("render task was rejected: " + runnable);
61         }
62     }
63 }
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