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Java > Open Source Codes > org > continuent > sequoia > common > jmx > monitoring > controller > UsedMemoryCollector


1 /**
2  * Sequoia: Database clustering technology.
3  * Copyright (C) 2002-2004 French National Institute For Research In Computer
4  * Science And Control (INRIA).
5  * Copyright (C) 2005 AmicoSoft, Inc. dba Emic Networks
6  * Contact: sequoia@continuent.org
7  *
8  * Licensed under the Apache License, Version 2.0 (the "License");
9  * you may not use this file except in compliance with the License.
10  * You may obtain a copy of the License at
11  *
12  * http://www.apache.org/licenses/LICENSE-2.0
13  *
14  * Unless required by applicable law or agreed to in writing, software
15  * distributed under the License is distributed on an "AS IS" BASIS,
16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17  * See the License for the specific language governing permissions and
18  * limitations under the License.
19  *
20  * Initial developer(s): Nicolas Modrzyk.
21  * Contributor(s):
22  */
23
24 package org.continuent.sequoia.common.jmx.monitoring.controller;
25
26 import org.continuent.sequoia.common.i18n.Translate;
27
28 /**
29  * Collect used memory on the jvm where the <code>Controller</code> is
30  * runnning
31  *
32  * @author <a HREF="mailto:Nicolas.Modrzyk@inrialpes.fr">Nicolas Modrzyk</a>
33  */
34 public class UsedMemoryCollector extends AbstractControllerDataCollector
35 {
36
37   private static final long serialVersionUID = -3948548986150527407L;
38
39   /**
40    * @see org.continuent.sequoia.common.jmx.monitoring.AbstractDataCollector#collectValue()
41    */
42   public long collectValue()
43   {
44     return (Runtime.getRuntime().totalMemory() - Runtime.getRuntime()
45         .freeMemory()) / 1024 / 1024;
46   }
47
48   /**
49    * @see org.continuent.sequoia.common.jmx.monitoring.AbstractDataCollector#getDescription()
50    */
51   public String JavaDoc getDescription()
52   {
53     return Translate.get("monitoring.controller.used.memory"); //$NON-NLS-1$
54 }
55
56   /**
57    * Creates a new <code>UsedMemoryCollector.java</code> object
58    *
59    * @param controller to collect data from
60    */
61   public UsedMemoryCollector(Object JavaDoc controller)
62   {
63     super(controller);
64   }
65 }
66
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