Mercurial > hg > truffle
comparison agent/src/share/classes/sun/jvm/hotspot/bugspot/StackTraceEntry.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 2001-2002 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.bugspot; | |
26 | |
27 import sun.jvm.hotspot.debugger.cdbg.*; | |
28 import sun.jvm.hotspot.oops.*; | |
29 import sun.jvm.hotspot.runtime.*; | |
30 | |
31 /** This class describes a frame in a stack trace. It abstracts over | |
32 C/C++ and Java frames. */ | |
33 | |
34 public class StackTraceEntry { | |
35 private CFrame cFrame; | |
36 private CDebugger dbg; | |
37 private JavaVFrame javaFrame; | |
38 private String value; // What is displayed in a stack trace | |
39 // For merging C and Java stack traces. | |
40 // For more precise stack traces, should probably have a way to | |
41 // convert a CFrame to a sun.jvm.hotspot.runtime.Frame. For now, | |
42 // doing similar algorithm to jdbx (which does not have intimate | |
43 // knowledge of the VM). | |
44 private boolean isUnknownCFrame; | |
45 | |
46 public StackTraceEntry(CFrame cFrame, CDebugger dbg) { | |
47 this.cFrame = cFrame; | |
48 this.dbg = dbg; | |
49 computeValue(); | |
50 } | |
51 | |
52 public StackTraceEntry(JavaVFrame javaFrame) { | |
53 this.javaFrame = javaFrame; | |
54 computeValue(); | |
55 } | |
56 | |
57 public boolean isCFrame() { return (cFrame != null); } | |
58 public boolean isJavaFrame() { return (javaFrame != null); } | |
59 public CFrame getCFrame() { return cFrame; } | |
60 public JavaVFrame getJavaFrame() { return javaFrame; } | |
61 public boolean isUnknownCFrame() { return isUnknownCFrame; } | |
62 public String toString() { | |
63 return value; | |
64 } | |
65 | |
66 private void computeValue() { | |
67 isUnknownCFrame = true; | |
68 value = "<unknown>"; | |
69 if (cFrame != null) { | |
70 PCFinder.Info info = PCFinder.findPC(cFrame.pc(), cFrame.loadObjectForPC(), dbg); | |
71 if (info.getName() != null) { | |
72 value = "(C) " + info.getName(); | |
73 isUnknownCFrame = false; | |
74 if (info.getConfidence() == PCFinder.LOW_CONFIDENCE) { | |
75 value = value + " (?)"; | |
76 } | |
77 if (info.getOffset() >= 0) { | |
78 value = value + " + 0x" + Long.toHexString(info.getOffset()); | |
79 } | |
80 } | |
81 } else if (javaFrame != null) { | |
82 isUnknownCFrame = false; | |
83 Method m = javaFrame.getMethod(); | |
84 value = "(J) " + m.externalNameAndSignature(); | |
85 } | |
86 } | |
87 } |