Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/bugspot/StackTraceEntry.java @ 6972:bd7a7ce2e264
6830717: replay of compilations would help with debugging
Summary: When java process crashed in compiler thread, repeat the compilation process will help finding root cause. This is done with using SA dump application class data and replay data from core dump, then use debug version of jvm to recompile the problematic java method.
Reviewed-by: kvn, twisti, sspitsyn
Contributed-by: yumin.qi@oracle.com
| author | minqi |
|---|---|
| date | Mon, 12 Nov 2012 14:03:53 -0800 |
| parents | c18cbe5936b8 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
2 * Copyright (c) 2001, 2002, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
21 * questions. |
| 0 | 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 } |