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comparison agent/src/share/classes/sun/jvm/hotspot/ci/ciInstanceKlass.java @ 3945:8ed53447f690

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Merge
author iveresov
date Thu, 15 Sep 2011 12:44:09 -0700
parents f6f3bb0ee072
children da91efe96a93
comparison
equal deleted inserted replaced
3929:f94227b6117b 3945:8ed53447f690
1 /*
2 * Copyright (c) 2011, Oracle and/or its affiliates. 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.ci;
26
27 import java.io.*;
28 import java.util.*;
29 import sun.jvm.hotspot.debugger.*;
30 import sun.jvm.hotspot.memory.SystemDictionary;
31 import sun.jvm.hotspot.runtime.*;
32 import sun.jvm.hotspot.oops.*;
33 import sun.jvm.hotspot.types.Type;
34 import sun.jvm.hotspot.types.TypeDataBase;
35 import sun.jvm.hotspot.types.WrongTypeException;
36
37 public class ciInstanceKlass extends ciKlass {
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) throws WrongTypeException {
47 Type type = db.lookupType("ciInstanceKlass");
48 initStateField = new CIntField(type.getCIntegerField("_init_state"), 0);
49 isSharedField = new CIntField(type.getCIntegerField("_is_shared"), 0);
50 CLASS_STATE_LINKED = db.lookupIntConstant("instanceKlass::linked").intValue();
51 CLASS_STATE_FULLY_INITIALIZED = db.lookupIntConstant("instanceKlass::fully_initialized").intValue();
52 }
53
54 private static CIntField initStateField;
55 private static CIntField isSharedField;
56 private static int CLASS_STATE_LINKED;
57 private static int CLASS_STATE_FULLY_INITIALIZED;
58
59 public ciInstanceKlass(Address addr) {
60 super(addr);
61 }
62
63 public int initState() {
64 int initState = (int)initStateField.getValue(getAddress());
65 if (isShared() && initState < CLASS_STATE_LINKED) {
66 InstanceKlass ik = (InstanceKlass)getOop();
67 initState = ik.getInitStateAsInt();
68 }
69 return initState;
70 }
71
72 public boolean isShared() {
73 return isSharedField.getValue(getAddress()) != 0;
74 }
75
76 public boolean isLinked() {
77 return initState() >= CLASS_STATE_LINKED;
78 }
79
80 public boolean isInitialized() {
81 return initState() == CLASS_STATE_FULLY_INITIALIZED;
82 }
83 }