Mercurial > hg > truffle
comparison agent/src/share/classes/sun/jvm/hotspot/ci/ciInstanceKlass.java @ 3945:8ed53447f690
Merge
author | iveresov |
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date | Thu, 15 Sep 2011 12:44:09 -0700 |
parents | f6f3bb0ee072 |
children | da91efe96a93 |
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3929:f94227b6117b | 3945:8ed53447f690 |
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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 } |