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comparison agent/src/share/classes/sun/jvm/hotspot/oops/MetadataField.java @ 6725:da91efe96a93

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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
date Sat, 01 Sep 2012 13:25:18 -0400
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children 8e47bac5643a
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6724:36d1d483d5d6 6725:da91efe96a93
1 /*
2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 package sun.jvm.hotspot.oops;
26
27 import sun.jvm.hotspot.runtime.VMObject;
28 import sun.jvm.hotspot.debugger.*;
29
30 // The class for an C int field simply provides access to the value.
31 public class MetadataField extends Field {
32
33 public MetadataField(sun.jvm.hotspot.types.AddressField vmField, long startOffset) {
34 super(new NamedFieldIdentifier(vmField.getName()), vmField.getOffset() + startOffset, true);
35 }
36
37 public Metadata getValue(Oop obj) {
38 return getValue(obj.getHandle());
39 }
40 public Metadata getValue(VMObject obj) {
41 return getValue(obj.getAddress());
42 }
43 public Metadata getValue(Address addr) {
44 return Metadata.instantiateWrapperFor(addr.getAddressAt(getOffset()));
45 }
46 public void setValue(Oop obj, long value) throws MutationException {
47 // Fix this: set* missing in Address
48 }
49 }