01: /*
02: * JBoss, Home of Professional Open Source.
03: * Copyright 2006, Red Hat Middleware LLC, and individual contributors
04: * as indicated by the @author tags. See the copyright.txt file in the
05: * distribution for a full listing of individual contributors.
06: *
07: * This is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU Lesser General Public License as
09: * published by the Free Software Foundation; either version 2.1 of
10: * the License, or (at your option) any later version.
11: *
12: * This software is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this software; if not, write to the Free
19: * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21: */
22: package org.jboss.management.j2ee.statistics;
23:
24: import javax.management.j2ee.statistics.BoundedRangeStatistic;
25: import javax.management.j2ee.statistics.CountStatistic;
26: import javax.management.j2ee.statistics.JVMStats;
27:
28: /**
29: * The JSR77.6.32 JMVStats implementation
30: *
31: * @author Scott.Stark@jboss.org
32: * @version $Revision: 57197 $
33: */
34: public class JVMStatsImpl extends StatsBase implements JVMStats {
35: // Constants -----------------------------------------------------
36:
37: /** @since 4.0.2 */
38: private static final long serialVersionUID = -7842397217562728796L;
39:
40: // Constructors --------------------------------------------------
41:
42: public JVMStatsImpl() {
43: this (new CountStatisticImpl("UpTime", "MILLISECOND",
44: "Time the VM has been running"),
45: new BoundedRangeStatisticImpl("HeapSize", "Bytes",
46: "Size of the VM's heap", 0, 0));
47: }
48:
49: public JVMStatsImpl(CountStatistic upTime,
50: BoundedRangeStatistic heapSize) {
51: addStatistic("UpTime", upTime);
52: addStatistic("HeapSize", heapSize);
53: }
54:
55: // Begin javax.management.j2ee.statistics.JVMStats interface methods
56: public CountStatistic getUpTime() {
57: CountStatisticImpl upTime = (CountStatisticImpl) getStatistic("UpTime");
58: long now = System.currentTimeMillis();
59: long elapsed = now - upTime.getStartTime();
60: upTime.set(elapsed);
61: return upTime;
62: }
63:
64: public BoundedRangeStatistic getHeapSize() {
65: BoundedRangeStatisticImpl heapSize = (BoundedRangeStatisticImpl) getStatistic("HeapSize");
66: long totalMemory = Runtime.getRuntime().totalMemory();
67: heapSize.set(totalMemory);
68: return heapSize;
69: }
70: // End javax.management.j2ee.statistics.JVMStats interface methods
71: }
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