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Java > Open Source Codes > org > objectweb > cjdbc > common > monitor > controller > UsedMemoryCollector


1 /**
2  * C-JDBC: Clustered JDBC.
3  * Copyright (C) 2002-2005 French National Institute For Research In Computer
4  * Science And Control (INRIA).
5  * Contact: c-jdbc@objectweb.org
6  *
7  * This library is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU Lesser General Public License as published by the
9  * Free Software Foundation; either version 2.1 of the License, or any later
10  * version.
11  *
12  * This library is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
15  * for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public License
18  * along with this library; if not, write to the Free Software Foundation,
19  * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
20  *
21  * Initial developer(s): Nicolas Modrzyk.
22  * Contributor(s):
23  */
24
25 package org.objectweb.cjdbc.common.monitor.controller;
26
27 import org.objectweb.cjdbc.common.i18n.Translate;
28
29 /**
30  * Collect used memory on the jvm where the <code>Controller</code> is
31  * runnning
32  *
33  * @author <a HREF="mailto:Nicolas.Modrzyk@inrialpes.fr">Nicolas Modrzyk</a>
34  */
35 public class UsedMemoryCollector extends AbstractControllerDataCollector
36 {
37
38   private static final long serialVersionUID = -3948548986150527407L;
39
40   /**
41    * @see org.objectweb.cjdbc.common.monitor.AbstractDataCollector#collectValue()
42    */
43   public long collectValue()
44   {
45     return (Runtime.getRuntime().totalMemory() - Runtime.getRuntime()
46         .freeMemory()) / 1024 / 1024;
47   }
48
49   /**
50    * @see org.objectweb.cjdbc.common.monitor.AbstractDataCollector#getDescription()
51    */
52   public String JavaDoc getDescription()
53   {
54     return Translate.get("monitoring.controller.used.memory");
55   }
56
57   /**
58    * Creates a new <code>UsedMemoryCollector.java</code> object
59    *
60    * @param controller to collect data from
61    */
62   public UsedMemoryCollector(Object JavaDoc controller)
63   {
64     super(controller);
65   }
66 }
67
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