Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/runtime/win32_ia64/Win32IA64JavaThreadPDAccess.java @ 210:05712c37c828
6676016: ParallelOldGC leaks memory
Summary: ensure that GCTask threads release resource and handle memory
Reviewed-by: jmasa, chrisphi
author | jcoomes |
---|---|
date | Wed, 18 Jun 2008 18:36:47 -0700 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2003 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_ia64; import java.io.*; import java.util.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.debugger.ia64.*; import sun.jvm.hotspot.runtime.*; import sun.jvm.hotspot.runtime.ia64.*; import sun.jvm.hotspot.types.*; import sun.jvm.hotspot.utilities.*; public class Win32IA64JavaThreadPDAccess implements JavaThreadPDAccess { // private static AddressField lastJavaPCField; // private static AddressField lastJavaFPField; private static AddressField lastJavaIFrameField; private static AddressField osThreadField; // Field from OSThread private static CIntegerField osThreadPThreadIDField; // 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"); lastJavaIFrameField = type.getAddressField("_last_Java_iframe"); osThreadField = type.getAddressField("_osthread"); type = db.lookupType("OSThread"); osThreadPThreadIDField = type.getCIntegerField("_pthread_id"); } public Address getLastJavaIFrame(Address addr) { return lastJavaIFrameField.getValue(addr); } public Address getBaseOfStackPointer(Address addr) { return null; } public Address getLastJavaFP(Address addr) { return null; // Not in 1.4.1 } public Address getLastJavaPC(Address addr) { return null; // Not in 1.4.1 } public boolean isInterpretedFrame() { // In 1.4.1 there are only interpreted frames // and there is no pc return true; } public Frame getLastFramePD(JavaThread thread, Address addr) { // The thread is the JavaThread that contains "this" // so we don't need any new accessor at the JavaThread level Address iframe = getLastJavaIFrame(addr); Address pc = thread.getLastJavaPC(); if (iframe == null) { return null; // no information } return new IA64Frame(thread.getLastJavaSP(), iframe, pc); } public RegisterMap newRegisterMap(JavaThread thread, boolean updateMap) { return new IA64RegisterMap(thread, updateMap); } public Frame getCurrentFrameGuess(JavaThread thread, Address addr) { return getLastFramePD(thread, addr); } public void printThreadIDOn(Address addr, PrintStream tty) { tty.print(getThreadProxy(addr)); } public void printInfoOn(Address threadAddr, PrintStream tty) { tty.print("Thread id: "); printThreadIDOn(threadAddr, tty); tty.println("\nLastJavaIFrame: " + getLastJavaIFrame(threadAddr)); } public Address getLastSP(Address addr) { ThreadProxy t = getThreadProxy(addr); IA64ThreadContext context = (IA64ThreadContext) t.getContext(); return context.getRegisterAsAddress(IA64ThreadContext.SP); } 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 _pthread_id from the OSThread Address pthreadIdAddr = osThreadAddr.addOffsetTo(osThreadPThreadIDField.getOffset()); JVMDebugger debugger = VM.getVM().getDebugger(); return debugger.getThreadForIdentifierAddress(pthreadIdAddr); } }