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comparison agent/src/share/classes/sun/jvm/hotspot/runtime/JNIid.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 2002-2003 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.runtime;
26
27 import java.util.*;
28
29 import sun.jvm.hotspot.debugger.*;
30 import sun.jvm.hotspot.oops.*;
31 import sun.jvm.hotspot.types.*;
32
33 public class JNIid extends VMObject {
34 private static sun.jvm.hotspot.types.OopField holder;
35 private static AddressField next;
36 private static CIntegerField offset;
37 private static sun.jvm.hotspot.types.OopField resolvedMethod;
38 private static sun.jvm.hotspot.types.OopField resolvedReceiver;
39
40 private ObjectHeap heap;
41
42 static {
43 VM.registerVMInitializedObserver(new Observer() {
44 public void update(Observable o, Object data) {
45 initialize(VM.getVM().getTypeDataBase());
46 }
47 });
48 }
49
50 private static synchronized void initialize(TypeDataBase db) {
51
52 // FIXME: JNIid has been removed as part of redesign of JNI method,
53 // field ID generation. Please refer to src/share/vm/prims/jniId.hpp/.cpp
54 // For now, commenting out the below code.
55
56 /***********************************************************
57 Type type = db.lookupType("JNIid");
58
59 holder = type.getOopField("_holder");
60 next = type.getAddressField("_next");
61 offset = type.getCIntegerField("_offset");
62 resolvedMethod = type.getOopField("_resolved_method");
63 resolvedReceiver = type.getOopField("_resolved_receiver");
64 ***********************************************************/
65 }
66
67 public JNIid(Address addr, ObjectHeap heap) {
68 super(addr);
69 this.heap = heap;
70 }
71
72 public JNIid next() {
73 Address nextAddr = next.getValue(addr);
74 if (nextAddr == null) {
75 return null;
76 }
77 return new JNIid(nextAddr, heap);
78 }
79
80 public Klass holder() { return (Klass) heap.newOop(holder.getValue(addr)); }
81 public int offset() { return (int) offset.getValue(addr); }
82 public Method method() {
83 return (Method) ((InstanceKlass) holder()).getMethods().getObjAt(offset());
84 }
85 public Method resolvedMethod() { return (Method) heap.newOop(resolvedMethod.getValue(addr)); }
86 public Klass resolvedReceiver() { return (Klass) heap.newOop(resolvedReceiver.getValue(addr)); }
87 }