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annotate agent/src/share/classes/sun/jvm/hotspot/runtime/win32_amd64/Win32AMD64JavaThreadPDAccess.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 | f6f3bb0ee072 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2005, 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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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 |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.runtime.win32_amd64; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 import sun.jvm.hotspot.debugger.*; | |
| 30 import sun.jvm.hotspot.debugger.win32.*; | |
| 31 import sun.jvm.hotspot.debugger.amd64.*; | |
| 32 import sun.jvm.hotspot.runtime.*; | |
| 33 import sun.jvm.hotspot.runtime.amd64.*; | |
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34 import sun.jvm.hotspot.runtime.x86.*; |
| 0 | 35 import sun.jvm.hotspot.types.*; |
| 36 import sun.jvm.hotspot.utilities.*; | |
| 37 | |
| 38 /** This class is only public to allow using the VMObjectFactory to | |
| 39 instantiate these. | |
| 40 */ | |
| 41 | |
| 42 public class Win32AMD64JavaThreadPDAccess implements JavaThreadPDAccess { | |
| 43 private static AddressField lastJavaFPField; | |
| 44 private static AddressField osThreadField; | |
| 45 | |
| 46 // Field from OSThread | |
| 47 private static Field osThreadThreadHandleField; | |
| 48 | |
| 49 // This is currently unneeded but is being kept in case we change | |
| 50 // the currentFrameGuess algorithm | |
| 51 private static final long GUESS_SCAN_RANGE = 128 * 1024; | |
| 52 | |
| 53 static { | |
| 54 VM.registerVMInitializedObserver(new Observer() { | |
| 55 public void update(Observable o, Object data) { | |
| 56 initialize(VM.getVM().getTypeDataBase()); | |
| 57 } | |
| 58 }); | |
| 59 } | |
| 60 | |
| 61 private static synchronized void initialize(TypeDataBase db) { | |
| 62 Type type = db.lookupType("JavaThread"); | |
| 63 Type anchorType = db.lookupType("JavaFrameAnchor"); | |
| 64 lastJavaFPField = anchorType.getAddressField("_last_Java_fp"); | |
| 65 osThreadField = type.getAddressField("_osthread"); | |
| 66 | |
| 67 type = db.lookupType("OSThread"); | |
| 68 osThreadThreadHandleField = type.getField("_thread_handle"); | |
| 69 } | |
| 70 | |
| 71 public Address getLastJavaFP(Address addr) { | |
| 72 return lastJavaFPField.getValue(addr.addOffsetTo(sun.jvm.hotspot.runtime.JavaThread.getAnchorField().getOffset())); | |
| 73 } | |
| 74 | |
| 75 public Address getLastJavaPC(Address addr) { | |
| 76 return null; | |
| 77 } | |
| 78 | |
| 79 public Address getBaseOfStackPointer(Address addr) { | |
| 80 return null; | |
| 81 } | |
| 82 | |
| 83 public Frame getLastFramePD(JavaThread thread, Address addr) { | |
| 84 Address fp = thread.getLastJavaFP(); | |
| 85 if (fp == null) { | |
| 86 return null; // no information | |
| 87 } | |
| 88 Address pc = thread.getLastJavaPC(); | |
| 89 if ( pc != null ) { | |
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90 return new X86Frame(thread.getLastJavaSP(), fp, pc); |
| 0 | 91 } else { |
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92 return new X86Frame(thread.getLastJavaSP(), fp); |
| 0 | 93 } |
| 94 } | |
| 95 | |
| 96 public RegisterMap newRegisterMap(JavaThread thread, boolean updateMap) { | |
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97 return new X86RegisterMap(thread, updateMap); |
| 0 | 98 } |
| 99 | |
| 100 public Frame getCurrentFrameGuess(JavaThread thread, Address addr) { | |
| 101 ThreadProxy t = getThreadProxy(addr); | |
| 102 AMD64ThreadContext context = (AMD64ThreadContext) t.getContext(); | |
| 103 AMD64CurrentFrameGuess guesser = new AMD64CurrentFrameGuess(context, thread); | |
| 104 if (!guesser.run(GUESS_SCAN_RANGE)) { | |
| 105 return null; | |
| 106 } | |
| 107 if (guesser.getPC() == null) { | |
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108 return new X86Frame(guesser.getSP(), guesser.getFP()); |
| 0 | 109 } else { |
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110 return new X86Frame(guesser.getSP(), guesser.getFP(), guesser.getPC()); |
| 0 | 111 } |
| 112 } | |
| 113 | |
| 114 public void printThreadIDOn(Address addr, PrintStream tty) { | |
| 115 tty.print(getThreadProxy(addr)); | |
| 116 } | |
| 117 | |
| 118 public void printInfoOn(Address threadAddr, PrintStream tty) { | |
| 119 } | |
| 120 | |
| 121 public Address getLastSP(Address addr) { | |
| 122 ThreadProxy t = getThreadProxy(addr); | |
| 123 AMD64ThreadContext context = (AMD64ThreadContext) t.getContext(); | |
| 124 return context.getRegisterAsAddress(AMD64ThreadContext.RSP); | |
| 125 } | |
| 126 | |
| 127 public ThreadProxy getThreadProxy(Address addr) { | |
| 128 // Addr is the address of the JavaThread. | |
| 129 // Fetch the OSThread (for now and for simplicity, not making a | |
| 130 // separate "OSThread" class in this package) | |
| 131 Address osThreadAddr = osThreadField.getValue(addr); | |
| 132 // Get the address of the HANDLE within the OSThread | |
| 133 Address threadHandleAddr = | |
| 134 osThreadAddr.addOffsetTo(osThreadThreadHandleField.getOffset()); | |
| 135 JVMDebugger debugger = VM.getVM().getDebugger(); | |
| 136 return debugger.getThreadForIdentifierAddress(threadHandleAddr); | |
| 137 } | |
| 138 } |