Mercurial > hg > truffle
diff agent/src/share/classes/sun/jvm/hotspot/runtime/win32_amd64/Win32AMD64JavaThreadPDAccess.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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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/agent/src/share/classes/sun/jvm/hotspot/runtime/win32_amd64/Win32AMD64JavaThreadPDAccess.java Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,137 @@ +/* + * Copyright 2005 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.win32_amd64; + +import java.io.*; +import java.util.*; +import sun.jvm.hotspot.debugger.*; +import sun.jvm.hotspot.debugger.win32.*; +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.*; + +/** This class is only public to allow using the VMObjectFactory to + instantiate these. +*/ + +public class Win32AMD64JavaThreadPDAccess implements JavaThreadPDAccess { + private static AddressField lastJavaFPField; + private static AddressField osThreadField; + + // Field from OSThread + private static Field osThreadThreadHandleField; + + // 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"); + osThreadThreadHandleField = type.getField("_thread_handle"); + } + + 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) { + // Addr is the address of the JavaThread. + // 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 HANDLE within the OSThread + Address threadHandleAddr = + osThreadAddr.addOffsetTo(osThreadThreadHandleField.getOffset()); + JVMDebugger debugger = VM.getVM().getDebugger(); + return debugger.getThreadForIdentifierAddress(threadHandleAddr); + } +}