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view agent/src/share/classes/sun/jvm/hotspot/runtime/solaris_amd64/SolarisAMD64JavaThreadPDAccess.java @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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/* * Copyright 2004 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ package sun.jvm.hotspot.runtime.solaris_amd64; import java.io.*; import java.util.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.debugger.amd64.*; import sun.jvm.hotspot.runtime.*; import sun.jvm.hotspot.runtime.amd64.*; import sun.jvm.hotspot.types.*; import sun.jvm.hotspot.utilities.*; public class SolarisAMD64JavaThreadPDAccess implements JavaThreadPDAccess { private static AddressField lastJavaFPField; private static AddressField osThreadField; private static AddressField baseOfStackPointerField; // Field from OSThread private static CIntegerField osThreadThreadIDField; // This is currently unneeded but is being kept in case we change // the currentFrameGuess algorithm private static final long GUESS_SCAN_RANGE = 128 * 1024; static { VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } }); } private static synchronized void initialize(TypeDataBase db) { Type type = db.lookupType("JavaThread"); Type anchorType = db.lookupType("JavaFrameAnchor"); lastJavaFPField = anchorType.getAddressField("_last_Java_fp"); osThreadField = type.getAddressField("_osthread"); type = db.lookupType("OSThread"); osThreadThreadIDField = type.getCIntegerField("_thread_id"); } public Address getLastJavaFP(Address addr) { return lastJavaFPField.getValue(addr.addOffsetTo(sun.jvm.hotspot.runtime.JavaThread.getAnchorField().getOffset())); } public Address getLastJavaPC(Address addr) { return null; } public Address getBaseOfStackPointer(Address addr) { return null; } public Frame getLastFramePD(JavaThread thread, Address addr) { Address fp = thread.getLastJavaFP(); if (fp == null) { return null; // no information } Address pc = thread.getLastJavaPC(); if ( pc != null ) { return new AMD64Frame(thread.getLastJavaSP(), fp, pc); } else { return new AMD64Frame(thread.getLastJavaSP(), fp); } } public RegisterMap newRegisterMap(JavaThread thread, boolean updateMap) { return new AMD64RegisterMap(thread, updateMap); } public Frame getCurrentFrameGuess(JavaThread thread, Address addr) { ThreadProxy t = getThreadProxy(addr); AMD64ThreadContext context = (AMD64ThreadContext) t.getContext(); AMD64CurrentFrameGuess guesser = new AMD64CurrentFrameGuess(context, thread); if (!guesser.run(GUESS_SCAN_RANGE)) { return null; } if (guesser.getPC() == null) { return new AMD64Frame(guesser.getSP(), guesser.getFP()); } else { return new AMD64Frame(guesser.getSP(), guesser.getFP(), guesser.getPC()); } } public void printThreadIDOn(Address addr, PrintStream tty) { tty.print(getThreadProxy(addr)); } public void printInfoOn(Address threadAddr, PrintStream tty) { } public Address getLastSP(Address addr) { ThreadProxy t = getThreadProxy(addr); AMD64ThreadContext context = (AMD64ThreadContext) t.getContext(); return context.getRegisterAsAddress(AMD64ThreadContext.RSP); } public ThreadProxy getThreadProxy(Address addr) { // Fetch the OSThread (for now and for simplicity, not making a // separate "OSThread" class in this package) Address osThreadAddr = osThreadField.getValue(addr); // Get the address of the thread ID from the OSThread Address tidAddr = osThreadAddr.addOffsetTo(osThreadThreadIDField.getOffset()); JVMDebugger debugger = VM.getVM().getDebugger(); return debugger.getThreadForIdentifierAddress(tidAddr); } }