Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/compiler/OopMap.java @ 3908:7588156f5cf9
7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
Reviewed-by: kvn
| author | never |
|---|---|
| date | Mon, 05 Sep 2011 17:09:05 -0700 |
| parents | c18cbe5936b8 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 2004, 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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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
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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 |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.compiler; | |
| 26 | |
| 27 import java.util.*; | |
| 28 | |
| 29 import sun.jvm.hotspot.code.*; | |
| 30 import sun.jvm.hotspot.debugger.*; | |
| 31 import sun.jvm.hotspot.runtime.*; | |
| 32 import sun.jvm.hotspot.types.*; | |
| 33 | |
| 34 public class OopMap extends VMObject { | |
| 35 private static CIntegerField pcOffsetField; | |
| 36 private static CIntegerField omvCountField; | |
| 37 private static CIntegerField omvDataSizeField; | |
| 38 private static AddressField omvDataField; | |
| 39 private static AddressField compressedWriteStreamField; | |
| 40 | |
| 41 // This is actually a field inside class CompressedStream | |
| 42 private static AddressField compressedStreamBufferField; | |
| 43 | |
| 44 static { | |
| 45 VM.registerVMInitializedObserver(new Observer() { | |
| 46 public void update(Observable o, Object data) { | |
| 47 initialize(VM.getVM().getTypeDataBase()); | |
| 48 } | |
| 49 }); | |
| 50 } | |
| 51 | |
| 52 private static void initialize(TypeDataBase db) { | |
| 53 Type type = db.lookupType("OopMap"); | |
| 54 | |
| 55 pcOffsetField = type.getCIntegerField("_pc_offset"); | |
| 56 omvCountField = type.getCIntegerField("_omv_count"); | |
| 57 omvDataSizeField = type.getCIntegerField("_omv_data_size"); | |
| 58 omvDataField = type.getAddressField("_omv_data"); | |
| 59 compressedWriteStreamField = type.getAddressField("_write_stream"); | |
| 60 | |
| 61 type = db.lookupType("CompressedStream"); | |
| 62 compressedStreamBufferField = type.getAddressField("_buffer"); | |
| 63 } | |
| 64 | |
| 65 public OopMap(Address addr) { | |
| 66 super(addr); | |
| 67 } | |
| 68 | |
| 69 public long getOffset() { | |
| 70 return pcOffsetField.getValue(addr); | |
| 71 } | |
| 72 | |
| 73 //-------------------------------------------------------------------------------- | |
| 74 // Internals only below this point | |
| 75 // | |
| 76 | |
| 77 // Accessors -- package private for now | |
| 78 Address getOMVData() { | |
| 79 return omvDataField.getValue(addr); | |
| 80 } | |
| 81 | |
| 82 long getOMVDataSize() { | |
| 83 return omvDataSizeField.getValue(addr); | |
| 84 } | |
| 85 | |
| 86 long getOMVCount() { | |
| 87 return omvCountField.getValue(addr); | |
| 88 } | |
| 89 | |
| 90 CompressedWriteStream getWriteStream() { | |
| 91 Address wsAddr = compressedWriteStreamField.getValue(addr); | |
| 92 if (wsAddr == null) { | |
| 93 return null; | |
| 94 } | |
| 95 Address bufferAddr = compressedStreamBufferField.getValue(wsAddr); | |
| 96 if (bufferAddr == null) { | |
| 97 return null; | |
| 98 } | |
| 99 return new CompressedWriteStream(bufferAddr); | |
| 100 } | |
| 101 } |