Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/memory/PlaceholderEntry.java @ 8059:49618582fc5b
8004840: Jstack seems to output unnecessary information in 7u9
Reviewed-by: dholmes, coleenp, sspitsyn, rbackman
author | sla |
---|---|
date | Thu, 14 Feb 2013 13:08:15 +0100 |
parents | da91efe96a93 |
children |
rev | line source |
---|---|
0 | 1 /* |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2426
diff
changeset
|
2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.memory; | |
26 | |
27 import java.util.*; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2426
diff
changeset
|
28 import sun.jvm.hotspot.classfile.ClassLoaderData; |
0 | 29 import sun.jvm.hotspot.debugger.*; |
30 import sun.jvm.hotspot.oops.*; | |
31 import sun.jvm.hotspot.types.*; | |
32 import sun.jvm.hotspot.runtime.*; | |
33 import sun.jvm.hotspot.utilities.*; | |
34 | |
35 public class PlaceholderEntry extends sun.jvm.hotspot.utilities.HashtableEntry { | |
36 static { | |
37 VM.registerVMInitializedObserver(new Observer() { | |
38 public void update(Observable o, Object data) { | |
39 initialize(VM.getVM().getTypeDataBase()); | |
40 } | |
41 }); | |
42 } | |
43 | |
44 private static synchronized void initialize(TypeDataBase db) { | |
45 Type type = db.lookupType("PlaceholderEntry"); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2426
diff
changeset
|
46 loaderDataField = type.getAddressField("_loader_data"); |
0 | 47 } |
48 | |
49 // Field | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2426
diff
changeset
|
50 private static AddressField loaderDataField; |
0 | 51 |
52 // Accessor | |
53 public Oop loader() { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2426
diff
changeset
|
54 return loaderData().getClassLoader(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2426
diff
changeset
|
55 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2426
diff
changeset
|
56 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2426
diff
changeset
|
57 public ClassLoaderData loaderData() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2426
diff
changeset
|
58 return ClassLoaderData.instantiateWrapperFor(loaderDataField.getValue(addr)); |
0 | 59 } |
60 | |
61 public PlaceholderEntry(Address addr) { | |
62 super(addr); | |
63 } | |
64 | |
65 public Symbol klass() { | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1552
diff
changeset
|
66 return Symbol.create(literalValue()); |
0 | 67 } |
68 | |
69 /* covariant return type :-( | |
70 public PlaceholderEntry next() { | |
71 return (PlaceholderEntry) super.next(); | |
72 } | |
73 For now, let the caller cast it .. | |
74 */ | |
75 } |