ThreadPoolStats


1   /**
2    *  Licensed to the Apache Software Foundation (ASF) under one or more
3    *  contributor license agreements.  See the NOTICE file distributed with
4    *  this work for additional information regarding copyright ownership.
5    *  The ASF licenses this file to You under the Apache License, Version 2.0
6    *  (the "License"); you may not use this file except in compliance with
7    *  the License.  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   *  Unless required by applicable law or agreed to in writing, software
12   *  distributed under the License is distributed on an "AS IS" BASIS,
13   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   *  See the License for the specific language governing permissions and
15   *  limitations under the License.
16   */
17  package org.apache.geronimo.management.geronimo.stats;
18  
19  import javax.management.j2ee.statistics.BoundedRangeStatistic  ;
20  import javax.management.j2ee.statistics.CountStatistic  ;
21  import javax.management.j2ee.statistics.Stats  ;
22  
23  /**
24   * Statistics expected for a Thread Pool implementation
25   *
26   * @version $Rev: 476049 $ $Date: 2006-11-16 23:35:17 -0500 (Thu, 16 Nov 2006) $
27   */
28  public interface ThreadPoolStats extends Stats   {
29      /**
30       * Gets the min and max pool size, as well as the most, least, and current
31       * number of threads in use.
32       */
33      public BoundedRangeStatistic   getThreadsInUse();
34  
35      /**
36       * Gets a list of the known consumers of threads from this pool.  This may
37       * not be all consumers, because they won't necessarily identify themselves,
38       * but it's a start when tracking down what's using threads in a pool.
39       */
40      public String  [] getThreadConsumers();
41  
42      /**
43       * For each consumer listed by getThreadConsumers(), this can be used to
44       * find out how many threads that consumer is consuming at the time these
45       * statistics were generated.
46       *
47       * @param consumer The consumer you're inquiring about
48       */
49      public CountStatistic   getCountForConsumer(String   consumer);
50  }
51
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