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Java > Open Source Codes > com > caucho > management > server > BlockManagerMXBean


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  *
23  * Free Software Foundation, Inc.
24  * 59 Temple Place, Suite 330
25  * Boston, MA 02111-1307 USA
26  *
27  * @author Scott Ferguson
28  */
29
30 package com.caucho.management.server;
31
32 import com.caucho.jmx.Description;
33
34 /**
35  * Management interface for the block manager used by the proxy cache
36  * and persistent sessions.
37  *
38  * <pre>
39  * resin:type=BlockManager
40  * </pre>
41  */
42 @Description("Resin's backing store block manager")
43 public interface BlockManagerMXBean extends ManagedObjectMXBean {
44   
45   /**
46    * Returns the number of blocks in the block manager
47    */
48   @Description("The number of blocks in the block manager")
49   public long getBlockCapacity();
50   
51   //
52 // Statistics
53 //
54
55   /**
56    * Returns the block LRU cache hit count.
57    */
58   @Description("The hit count is the number of block accesses found in"
59            + " the cache.")
60   public long getHitCountTotal();
61
62   /**
63    * Returns the proxy cache miss count.
64    */
65   @Description("The hit count is the number of block accesses missing in"
66            + " the cache.")
67   public long getMissCountTotal();
68 }
69
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