Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/oops/MetadataField.java @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author | coleenp |
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date | Sat, 01 Sep 2012 13:25:18 -0400 |
parents | |
children | 8e47bac5643a |
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/* * Copyright (c) 2012, 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.oops; import sun.jvm.hotspot.runtime.VMObject; import sun.jvm.hotspot.debugger.*; // The class for an C int field simply provides access to the value. public class MetadataField extends Field { public MetadataField(sun.jvm.hotspot.types.AddressField vmField, long startOffset) { super(new NamedFieldIdentifier(vmField.getName()), vmField.getOffset() + startOffset, true); } public Metadata getValue(Oop obj) { return getValue(obj.getHandle()); } public Metadata getValue(VMObject obj) { return getValue(obj.getAddress()); } public Metadata getValue(Address addr) { return Metadata.instantiateWrapperFor(addr.getAddressAt(getOffset())); } public void setValue(Oop obj, long value) throws MutationException { // Fix this: set* missing in Address } }