Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/runtime/bsd_amd64/BsdAMD64JavaThreadPDAccess.java @ 17524:89152779163c
Merge with jdk8-b132
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Wed, 15 Oct 2014 11:59:32 +0200 |
| parents | 4ca6dc0799b6 |
| children |
| rev | line source |
|---|---|
| 3960 | 1 /* |
| 17524 | 2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
| 3960 | 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.runtime.bsd_amd64; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 import sun.jvm.hotspot.debugger.*; | |
| 30 import sun.jvm.hotspot.debugger.amd64.*; | |
|
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31 import sun.jvm.hotspot.debugger.bsd.BsdDebugger; |
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32 import sun.jvm.hotspot.debugger.bsd.BsdDebuggerLocal; |
| 3960 | 33 import sun.jvm.hotspot.runtime.*; |
| 34 import sun.jvm.hotspot.runtime.amd64.*; | |
| 35 import sun.jvm.hotspot.runtime.x86.*; | |
| 36 import sun.jvm.hotspot.types.*; | |
| 37 import sun.jvm.hotspot.utilities.*; | |
| 38 | |
| 39 public class BsdAMD64JavaThreadPDAccess implements JavaThreadPDAccess { | |
| 40 private static AddressField lastJavaFPField; | |
| 41 private static AddressField osThreadField; | |
| 42 | |
|
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43 // Fields from OSThread |
| 3960 | 44 private static CIntegerField osThreadThreadIDField; |
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45 private static CIntegerField osThreadUniqueThreadIDField; |
| 3960 | 46 |
| 47 // This is currently unneeded but is being kept in case we change | |
| 48 // the currentFrameGuess algorithm | |
| 49 private static final long GUESS_SCAN_RANGE = 128 * 1024; | |
| 50 | |
| 51 static { | |
| 52 VM.registerVMInitializedObserver(new Observer() { | |
| 53 public void update(Observable o, Object data) { | |
| 54 initialize(VM.getVM().getTypeDataBase()); | |
| 55 } | |
| 56 }); | |
| 57 } | |
| 58 | |
| 59 private static synchronized void initialize(TypeDataBase db) { | |
| 60 Type type = db.lookupType("JavaThread"); | |
| 61 osThreadField = type.getAddressField("_osthread"); | |
| 62 | |
| 63 Type anchorType = db.lookupType("JavaFrameAnchor"); | |
| 64 lastJavaFPField = anchorType.getAddressField("_last_Java_fp"); | |
| 65 | |
| 66 Type osThreadType = db.lookupType("OSThread"); | |
|
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67 osThreadThreadIDField = osThreadType.getCIntegerField("_thread_id"); |
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68 osThreadUniqueThreadIDField = osThreadType.getCIntegerField("_unique_thread_id"); |
| 3960 | 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 return new X86Frame(thread.getLastJavaSP(), fp); | |
| 89 } | |
| 90 | |
| 91 public RegisterMap newRegisterMap(JavaThread thread, boolean updateMap) { | |
| 92 return new X86RegisterMap(thread, updateMap); | |
| 93 } | |
| 94 | |
| 95 public Frame getCurrentFrameGuess(JavaThread thread, Address addr) { | |
| 96 ThreadProxy t = getThreadProxy(addr); | |
| 97 AMD64ThreadContext context = (AMD64ThreadContext) t.getContext(); | |
| 98 AMD64CurrentFrameGuess guesser = new AMD64CurrentFrameGuess(context, thread); | |
| 99 if (!guesser.run(GUESS_SCAN_RANGE)) { | |
| 100 return null; | |
| 101 } | |
| 102 if (guesser.getPC() == null) { | |
| 103 return new X86Frame(guesser.getSP(), guesser.getFP()); | |
| 104 } else { | |
| 105 return new X86Frame(guesser.getSP(), guesser.getFP(), guesser.getPC()); | |
| 106 } | |
| 107 } | |
| 108 | |
| 109 public void printThreadIDOn(Address addr, PrintStream tty) { | |
| 110 tty.print(getThreadProxy(addr)); | |
| 111 } | |
| 112 | |
| 113 public void printInfoOn(Address threadAddr, PrintStream tty) { | |
| 114 tty.print("Thread id: "); | |
| 115 printThreadIDOn(threadAddr, tty); | |
| 116 // tty.println("\nPostJavaState: " + getPostJavaState(threadAddr)); | |
| 117 } | |
| 118 | |
| 119 public Address getLastSP(Address addr) { | |
| 120 ThreadProxy t = getThreadProxy(addr); | |
| 121 AMD64ThreadContext context = (AMD64ThreadContext) t.getContext(); | |
| 122 return context.getRegisterAsAddress(AMD64ThreadContext.RSP); | |
| 123 } | |
| 124 | |
| 125 public ThreadProxy getThreadProxy(Address addr) { | |
| 126 // Addr is the address of the JavaThread. | |
| 127 // Fetch the OSThread (for now and for simplicity, not making a | |
| 128 // separate "OSThread" class in this package) | |
| 129 Address osThreadAddr = osThreadField.getValue(addr); | |
| 130 // Get the address of the _thread_id from the OSThread | |
| 131 Address threadIdAddr = osThreadAddr.addOffsetTo(osThreadThreadIDField.getOffset()); | |
|
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132 Address uniqueThreadIdAddr = osThreadAddr.addOffsetTo(osThreadUniqueThreadIDField.getOffset()); |
| 3960 | 133 |
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134 BsdDebuggerLocal debugger = (BsdDebuggerLocal) VM.getVM().getDebugger(); |
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135 return debugger.getThreadForIdentifierAddress(threadIdAddr, uniqueThreadIdAddr); |
| 3960 | 136 } |
| 137 } |