Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/memory/OneContigSpaceCardGeneration.java @ 4629:29da09bf4930
Fix a problem with having a MemoryCheckpoint that is also a ControlSplit (InvokeWithException), the ANY_LOCATION can not be this control split in both branches because it may lead to scheduling problems : make ExceptionObject a MemoryCheckpoint
author | Gilles Duboscq <duboscq@ssw.jku.at> |
---|---|
date | Fri, 17 Feb 2012 13:54:39 +0100 |
parents | c18cbe5936b8 |
children |
line wrap: on
line source
/* * Copyright (c) 2000, 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.memory; import java.io.*; import java.util.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.runtime.*; import sun.jvm.hotspot.types.*; /** <P> OneSpaceOldGeneration models a heap of old objects contained in a single contiguous space. </P> <P> Garbage collection is performed using mark-compact. </P> */ public abstract class OneContigSpaceCardGeneration extends CardGeneration { private static AddressField theSpaceField; 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("OneContigSpaceCardGeneration"); theSpaceField = type.getAddressField("_the_space"); } public OneContigSpaceCardGeneration(Address addr) { super(addr); } public ContiguousSpace theSpace() { return (ContiguousSpace) VMObjectFactory.newObject(ContiguousSpace.class, theSpaceField.getValue(addr)); } public boolean isIn(Address p) { return theSpace().contains(p); } /** Space queries */ public long capacity() { return theSpace().capacity(); } public long used() { return theSpace().used(); } public long free() { return theSpace().free(); } public long contiguousAvailable() { return theSpace().free() + virtualSpace().uncommittedSize(); } public void spaceIterate(SpaceClosure blk, boolean usedOnly) { blk.doSpace(theSpace()); } public void printOn(PrintStream tty) { tty.print(" old "); theSpace().printOn(tty); } }