01: /*
02: * Version: MPL 1.1/GPL 2.0/LGPL 2.1
03: *
04: * "The contents of this file are subject to the Mozilla Public License
05: * Version 1.1 (the "License"); you may not use this file except in
06: * compliance with the License. You may obtain a copy of the License at
07: * http://www.mozilla.org/MPL/
08: *
09: * 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 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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