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comparison agent/src/share/classes/sun/jvm/hotspot/memory/GenerationSpec.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2000-2003 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 package sun.jvm.hotspot.memory;
26
27 import java.util.*;
28
29 import sun.jvm.hotspot.debugger.*;
30 import sun.jvm.hotspot.runtime.*;
31 import sun.jvm.hotspot.types.*;
32
33 public class GenerationSpec extends VMObject {
34 private static CIntegerField nameField;
35 private static CIntegerField initSizeField;
36 private static CIntegerField maxSizeField;
37
38 static {
39 VM.registerVMInitializedObserver(new Observer() {
40 public void update(Observable o, Object data) {
41 initialize(VM.getVM().getTypeDataBase());
42 }
43 });
44 }
45
46 private static synchronized void initialize(TypeDataBase db) {
47 Type type = db.lookupType("GenerationSpec");
48
49 nameField = type.getCIntegerField("_name");
50 initSizeField = type.getCIntegerField("_init_size");
51 maxSizeField = type.getCIntegerField("_max_size");
52 }
53
54 public GenerationSpec(Address addr) {
55 super(addr);
56 }
57
58 public Generation.Name name() {
59 return Generation.nameForEnum((int)nameField.getValue(addr));
60 }
61
62 public long initSize() {
63 return initSizeField.getValue(addr);
64 }
65
66 public long maxSize() {
67 return maxSizeField.getValue(addr);
68 }
69 }