Mercurial > hg > truffle
comparison agent/src/share/classes/sun/jvm/hotspot/oops/DefaultMetadataVisitor.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 |
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6724:36d1d483d5d6 | 6725:da91efe96a93 |
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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.debugger.Address; | |
28 | |
29 /** A DefaultMetadataVisitor implements basic no-op MetadataVisitor | |
30 functionality except that the setObj() and getObj() methods are | |
31 implemented properly. */ | |
32 abstract public class DefaultMetadataVisitor implements MetadataVisitor { | |
33 private Metadata obj; | |
34 | |
35 public void prologue() {} | |
36 | |
37 // Called after visiting an object | |
38 public void epilogue() {} | |
39 | |
40 public void setObj(Metadata obj) { | |
41 this.obj = obj; | |
42 } | |
43 | |
44 public Metadata getObj() { | |
45 return obj; | |
46 } | |
47 | |
48 // Callback methods for each field type in an object | |
49 abstract public void doMetadata(MetadataField field, boolean isVMField); | |
50 public void doOop(OopField field, boolean isVMField) {} | |
51 public void doOop(NarrowOopField field, boolean isVMField) {} | |
52 public void doByte(ByteField field, boolean isVMField) {} | |
53 public void doChar(CharField field, boolean isVMField) {} | |
54 public void doBoolean(BooleanField field, boolean isVMField) {} | |
55 public void doShort(ShortField field, boolean isVMField) {} | |
56 public void doInt(IntField field, boolean isVMField) {} | |
57 public void doLong(LongField field, boolean isVMField) {} | |
58 public void doFloat(FloatField field, boolean isVMField) {} | |
59 public void doDouble(DoubleField field, boolean isVMField) {} | |
60 public void doCInt(CIntField field, boolean isVMField) {} | |
61 } |