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comparison agent/src/share/classes/sun/jvm/hotspot/memory/Dictionary.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
parents c18cbe5936b8
children
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6724:36d1d483d5d6 6725:da91efe96a93
1 /* 1 /*
2 * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
61 ObjectHeap heap = VM.getVM().getObjectHeap(); 61 ObjectHeap heap = VM.getVM().getObjectHeap();
62 int tblSize = tableSize(); 62 int tblSize = tableSize();
63 for (int index = 0; index < tblSize; index++) { 63 for (int index = 0; index < tblSize; index++) {
64 for (DictionaryEntry probe = (DictionaryEntry) bucket(index); probe != null; 64 for (DictionaryEntry probe = (DictionaryEntry) bucket(index); probe != null;
65 probe = (DictionaryEntry) probe.next()) { 65 probe = (DictionaryEntry) probe.next()) {
66 Oop k = probe.klass(); 66 Klass k = probe.klass();
67 if (k.isKlass() && 67 if (heap.equal(probe.loader(), ((InstanceKlass) k).getClassLoader())) {
68 heap.equal(probe.loader(), ((InstanceKlass) k).getClassLoader())) { 68 v.visit(k);
69 v.visit((Klass) k);
70 } 69 }
71 } 70 }
72 } 71 }
73 } 72 }
74 73
76 public void classesDo(SystemDictionary.ClassAndLoaderVisitor v) { 75 public void classesDo(SystemDictionary.ClassAndLoaderVisitor v) {
77 int tblSize = tableSize(); 76 int tblSize = tableSize();
78 for (int index = 0; index < tblSize; index++) { 77 for (int index = 0; index < tblSize; index++) {
79 for (DictionaryEntry probe = (DictionaryEntry) bucket(index); probe != null; 78 for (DictionaryEntry probe = (DictionaryEntry) bucket(index); probe != null;
80 probe = (DictionaryEntry) probe.next()) { 79 probe = (DictionaryEntry) probe.next()) {
81 Oop k = probe.klass(); 80 Klass k = probe.klass();
82 if (k.isKlass()) { 81 v.visit(k, probe.loader());
83 v.visit((Klass) k, probe.loader());
84 }
85 } 82 }
86 } 83 }
87 } 84 }
88 85
89 public Klass find(int index, long hash, Symbol className, Oop classLoader, Oop protectionDomain) { 86 public Klass find(int index, long hash, Symbol className, Oop classLoader, Oop protectionDomain) {