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Java > Open Source Codes > org > apache > cocoon > components > thread > Queue


1 /*
2  * Copyright 1999-2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package org.apache.cocoon.components.thread;
17
18 /**
19  * Extension to add queue size reporting
20  *
21  * @author <a HREF="mailto:giacomo.at.apache.org">Giacomo Pati</a>
22  * @version CVS $Id: Queue.java 56702 2004-11-05 22:52:05Z giacomo $
23  *
24  * @see EDU.oswego.cs.dl.util.concurrent.Channel
25  */
26 public interface Queue
27     extends EDU.oswego.cs.dl.util.concurrent.Channel
28 {
29     //~ Methods ----------------------------------------------------------------
30
31     /**
32      * get the current queue size
33      *
34      * @return current size of queue. If the size of the queue is not
35      * maintained by an implementation -1 should be returned.
36      */
37     int getQueueSize( );
38 }
39
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