Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/gc_implementation/shared/MutableSpace.java @ 2245:638119ce7cfd
7009309: JSR 292: compiler/6991596/Test6991596.java crashes on fastdebug JDK7/b122
Reviewed-by: kvn, never
author | twisti |
---|---|
date | Tue, 01 Feb 2011 03:38:44 -0800 |
parents | c18cbe5936b8 |
children |
line wrap: on
line source
/* * Copyright (c) 2003, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ package sun.jvm.hotspot.gc_implementation.shared; import java.io.*; import java.util.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.memory.*; import sun.jvm.hotspot.runtime.*; import sun.jvm.hotspot.types.*; public class MutableSpace extends ImmutableSpace { 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("MutableSpace"); topField = type.getAddressField("_top"); } public MutableSpace(Address addr) { super(addr); } // Fields private static AddressField topField; // Accessors public Address top() { return topField.getValue(addr); } /** In bytes */ public long used() { return top().minus(bottom()); } /** returns all MemRegions where live objects are */ public List/*<MemRegion>*/ getLiveRegions() { List res = new ArrayList(); res.add(new MemRegion(bottom(), top())); return res; } public void printOn(PrintStream tty) { tty.print(" [" + bottom() + "," + top() + "," + end() + "] "); } }