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comparison agent/src/share/classes/sun/jvm/hotspot/memory/FreeList.java @ 152:c70a245cad3a

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6670684: 4/5 SA command universe did not print out CMS space information Summary: Forward port of Yumin's fix for 6670684 from HSX-11; Yumin verified the port was correct. Reviewed-by: dcubed
author dcubed
date Fri, 09 May 2008 08:55:13 -0700
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children d1605aabd0a1
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83:d3cd40645d0d 152:c70a245cad3a
1 /*
2 * @(#)FreeList.java
3 *
4 * Copyright 2000-2007 Sun Microsystems, Inc. All Rights Reserved.
5 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 *
7 * This code is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 only, as
9 * published by the Free Software Foundation.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 *
25 */
26
27 package sun.jvm.hotspot.memory;
28
29 import java.util.*;
30 import sun.jvm.hotspot.debugger.*;
31 import sun.jvm.hotspot.types.*;
32 import sun.jvm.hotspot.runtime.*;
33
34 public class FreeList extends VMObject {
35 static {
36 VM.registerVMInitializedObserver(new Observer() {
37 public void update(Observable o, Object data) {
38 initialize(VM.getVM().getTypeDataBase());
39 }
40 });
41 }
42
43 private static synchronized void initialize(TypeDataBase db) {
44 Type type = db.lookupType("FreeList");
45 sizeField = type.getCIntegerField("_size");
46 countField = type.getCIntegerField("_count");
47 headerSize = type.getSize();
48 }
49
50 // Fields
51 private static CIntegerField sizeField;
52 private static CIntegerField countField;
53 private static long headerSize;
54
55 //Constructor
56 public FreeList(Address address) {
57 super(address);
58 }
59
60 // Accessors
61 public long size() {
62 return sizeField.getValue(addr);
63 }
64
65 public long count() {
66 return countField.getValue(addr);
67 }
68
69 public static long sizeOf() {
70 return headerSize;
71 }
72 }