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comparison agent/src/share/classes/sun/jvm/hotspot/memory/ProtectionDomainEntry.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 2001 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 import sun.jvm.hotspot.debugger.*;
29 import sun.jvm.hotspot.oops.*;
30 import sun.jvm.hotspot.runtime.*;
31 import sun.jvm.hotspot.types.*;
32
33 public class ProtectionDomainEntry extends VMObject {
34 private static AddressField nextField;
35 private static sun.jvm.hotspot.types.OopField protectionDomainField;
36
37 static {
38 VM.registerVMInitializedObserver(new Observer() {
39 public void update(Observable o, Object data) {
40 initialize(VM.getVM().getTypeDataBase());
41 }
42 });
43 }
44
45 private static synchronized void initialize(TypeDataBase db) {
46 Type type = db.lookupType("ProtectionDomainEntry");
47
48 nextField = type.getAddressField("_next");
49 protectionDomainField = type.getOopField("_protection_domain");
50 }
51
52 public ProtectionDomainEntry(Address addr) {
53 super(addr);
54 }
55
56 public ProtectionDomainEntry next() {
57 return (ProtectionDomainEntry) VMObjectFactory.newObject(ProtectionDomainEntry.class, addr);
58 }
59
60 public Oop protectionDomain() {
61 return VM.getVM().getObjectHeap().newOop(protectionDomainField.getValue(addr));
62 }
63 }