Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/memory/HeapBlock.java @ 579:0fbdb4381b99
6814575: Update copyright year
Summary: Update copyright for files that have been modified in 2009, up to 03/09
Reviewed-by: katleman, tbell, ohair
author | xdono |
---|---|
date | Mon, 09 Mar 2009 13:28:46 -0700 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2000-2005 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.memory; import java.util.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.runtime.*; import sun.jvm.hotspot.types.*; public class HeapBlock extends VMObject { private static long heapBlockSize; private static Field headerField; // Fields for class Header private static CIntegerField headerLengthField; private static CIntegerField headerUsedField; static { VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } }); } private static void initialize(TypeDataBase db) { // HeapBlock Type type = db.lookupType("HeapBlock"); heapBlockSize = type.getSize(); headerField = type.getField("_header"); // Header type = db.lookupType("HeapBlock::Header"); headerLengthField = type.getCIntegerField("_length"); headerUsedField = type.getCIntegerField("_used"); } public HeapBlock(Address addr) { super(addr); } public long getLength() { return getHeader().getLength(); } public boolean isFree() { return getHeader().isFree(); } public Address getAllocatedSpace() { return addr.addOffsetTo(heapBlockSize); } //-------------------------------------------------------------------------------- // Internals only below this point // public static class Header extends VMObject { public Header(Address addr) { super(addr); } public long getLength() { return headerLengthField.getValue(addr); } public boolean isFree() { return (headerUsedField.getValue(addr) == 0); } } private Header getHeader() { return (Header) VMObjectFactory.newObject(HeapBlock.Header.class, addr.addOffsetTo(headerField.getOffset())); } }