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comparison agent/src/share/classes/sun/jvm/hotspot/debugger/cdbg/basic/BasicCFrame.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.debugger.cdbg.basic;
26
27 import sun.jvm.hotspot.debugger.*;
28 import sun.jvm.hotspot.debugger.cdbg.*;
29
30 /** Basic implementation of the CFrame interface providing some of the
31 functionality in a platform-independent manner. */
32
33 public abstract class BasicCFrame implements CFrame {
34 private CDebugger dbg;
35
36 protected BasicCFrame(CDebugger dbg) {
37 this.dbg = dbg;
38 }
39
40 protected CDebugger dbg() {
41 return dbg;
42 }
43
44 public LoadObject loadObjectForPC() {
45 return dbg.loadObjectContainingPC(pc());
46 }
47
48 public BlockSym blockForPC() {
49 LoadObject lo = loadObjectForPC();
50 if (lo == null) {
51 return null;
52 }
53 return lo.debugInfoForPC(pc());
54 }
55
56 public ClosestSymbol closestSymbolToPC() {
57 LoadObject lo = loadObjectForPC();
58 if (lo == null) {
59 return null;
60 }
61 return lo.closestSymbolToPC(pc());
62 }
63
64 public void iterateLocals(ObjectVisitor v) {
65 BlockSym block = blockForPC();
66 while (block != null) {
67 for (int i = 0; i < block.getNumLocals(); i++) {
68 final LocalSym local = block.getLocal(i);
69 Type t = local.getType();
70 // t should not be null, but be robust in case of bugs in
71 // debug info
72 if (t != null) {
73 t.iterateObject(localVariableBase().addOffsetTo(local.getFrameOffset()),
74 v,
75 new NamedFieldIdentifier() {
76 public Type getType() {
77 return local.getType();
78 }
79
80 public String getName() {
81 return local.getName();
82 }
83
84 public String toString() {
85 return getName();
86 }
87 });
88 }
89 }
90
91 block = block.getParent();
92 }
93 }
94 }