Mercurial > hg > truffle
comparison agent/src/share/classes/sun/jvm/hotspot/oops/LocalVariableTableElement.java @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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-1:000000000000 | 0:a61af66fc99e |
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1 /* | |
2 * Copyright 2001-2004 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.oops; | |
26 | |
27 import java.io.*; | |
28 import java.util.*; | |
29 import sun.jvm.hotspot.debugger.*; | |
30 import sun.jvm.hotspot.interpreter.*; | |
31 import sun.jvm.hotspot.runtime.*; | |
32 import sun.jvm.hotspot.types.*; | |
33 import sun.jvm.hotspot.utilities.*; | |
34 | |
35 public class LocalVariableTableElement { | |
36 static { | |
37 VM.registerVMInitializedObserver(new Observer() { | |
38 public void update(Observable o, Object data) { | |
39 initialize(VM.getVM().getTypeDataBase()); | |
40 } | |
41 }); | |
42 } | |
43 | |
44 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { | |
45 Type type = db.lookupType("LocalVariableTableElement"); | |
46 offsetOfStartBCI = type.getCIntegerField("start_bci").getOffset(); | |
47 offsetOfLength = type.getCIntegerField("length").getOffset(); | |
48 offsetOfNameCPIndex = type.getCIntegerField("name_cp_index").getOffset(); | |
49 offsetOfDescriptorCPIndex = type.getCIntegerField("descriptor_cp_index").getOffset(); | |
50 offsetOfSignatureCPIndex = type.getCIntegerField("signature_cp_index").getOffset(); | |
51 offsetOfSlot = type.getCIntegerField("slot").getOffset(); | |
52 } | |
53 | |
54 private static long offsetOfStartBCI; | |
55 private static long offsetOfLength; | |
56 private static long offsetOfNameCPIndex; | |
57 private static long offsetOfDescriptorCPIndex; | |
58 private static long offsetOfSignatureCPIndex; | |
59 private static long offsetOfSlot; | |
60 | |
61 private OopHandle handle; | |
62 private long offset; | |
63 | |
64 public LocalVariableTableElement(OopHandle handle, long offset) { | |
65 this.handle = handle; | |
66 this.offset = offset; | |
67 } | |
68 | |
69 public int getStartBCI() { | |
70 return (int) handle.getCIntegerAt(offset + offsetOfStartBCI, 2, true); | |
71 } | |
72 | |
73 public int getLength() { | |
74 return (int) handle.getCIntegerAt(offset + offsetOfLength, 2, true); | |
75 } | |
76 | |
77 public int getNameCPIndex() { | |
78 return (int) handle.getCIntegerAt(offset + offsetOfNameCPIndex, 2, true); | |
79 } | |
80 | |
81 public int getDescriptorCPIndex() { | |
82 return (int) handle.getCIntegerAt(offset + offsetOfDescriptorCPIndex, 2, true); | |
83 } | |
84 | |
85 public int getSignatureCPIndex() { | |
86 return (int) handle.getCIntegerAt(offset + offsetOfSignatureCPIndex, 2, true); | |
87 } | |
88 | |
89 public int getSlot() { | |
90 return (int) handle.getCIntegerAt(offset + offsetOfSlot, 2, true); | |
91 } | |
92 } |