Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/oops/LocalVariableTableElement.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 | da91efe96a93 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6964458: Reimplement class meta-data storage to use native memory
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2 * Copyright (c) 2001, 2012, 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 * | |
|
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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
| 0 | 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 | |
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6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1552
diff
changeset
|
61 private Address handle; |
| 0 | 62 private long offset; |
| 63 | |
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6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1552
diff
changeset
|
64 public LocalVariableTableElement(Address handle, long offset) { |
| 0 | 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 } |