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comparison agent/src/share/classes/sun/jvm/hotspot/jdi/ClassLoaderReferenceImpl.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2002-2003 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 package sun.jvm.hotspot.jdi;
26
27 import sun.jvm.hotspot.oops.Oop;
28 import sun.jvm.hotspot.oops.Instance;
29 import sun.jvm.hotspot.oops.Klass;
30 import sun.jvm.hotspot.memory.SystemDictionary;
31 import sun.jvm.hotspot.memory.Universe;
32 import sun.jvm.hotspot.runtime.VM;
33
34 import com.sun.jdi.*;
35 import java.util.*;
36
37 public class ClassLoaderReferenceImpl
38 extends ObjectReferenceImpl
39 implements ClassLoaderReference
40 {
41 // because we work on process snapshot or core we can
42 // cache visibleClasses & definedClasses always (i.e., no suspension)
43 private List visibleClassesCache;
44 private List definedClassesCache;
45
46 ClassLoaderReferenceImpl(VirtualMachine aVm, Instance oRef) {
47 super(aVm, oRef);
48 }
49
50 protected String description() {
51 return "ClassLoaderReference " + uniqueID();
52 }
53
54 public List definedClasses() {
55 if (definedClassesCache == null) {
56 definedClassesCache = new ArrayList();
57 Iterator iter = vm.allClasses().iterator();
58 while (iter.hasNext()) {
59 ReferenceType type = (ReferenceType)iter.next();
60 if (equals(type.classLoader())) { /* thanks OTI */
61 definedClassesCache.add(type);
62 }
63 }
64 }
65 return definedClassesCache;
66 }
67
68 private SystemDictionary getSystemDictionary() {
69 return vm.saSystemDictionary();
70 }
71
72 private Universe getUniverse() {
73 return vm.saUniverse();
74 }
75
76 public List visibleClasses() {
77 if (visibleClassesCache != null)
78 return visibleClassesCache;
79
80 visibleClassesCache = new ArrayList();
81
82 // refer to getClassLoaderClasses in jvmtiGetLoadedClasses.cpp
83 // a. SystemDictionary::classes_do doesn't include arrays of primitive types (any dimensions)
84 SystemDictionary sysDict = getSystemDictionary();
85 sysDict.classesDo(
86 new SystemDictionary.ClassAndLoaderVisitor() {
87 public void visit(Klass k, Oop loader) {
88 if (ref().equals(loader)) {
89 for (Klass l = k; l != null; l = l.arrayKlassOrNull()) {
90 visibleClassesCache.add(vm.referenceType(l));
91 }
92 }
93 }
94 }
95 );
96
97 // b. multi dimensional arrays of primitive types
98 sysDict.primArrayClassesDo(
99 new SystemDictionary.ClassAndLoaderVisitor() {
100 public void visit(Klass k, Oop loader) {
101 if (ref().equals(loader)) {
102 visibleClassesCache.add(vm.referenceType(k));
103 }
104 }
105 }
106 );
107
108 // c. single dimensional primitive array klasses from Universe
109 // these are not added to SystemDictionary
110 getUniverse().basicTypeClassesDo(
111 new SystemDictionary.ClassVisitor() {
112 public void visit(Klass k) {
113 visibleClassesCache.add(vm.referenceType(k));
114 }
115 }
116 );
117
118 return visibleClassesCache;
119 }
120
121 Type findType(String signature) throws ClassNotLoadedException {
122 List types = visibleClasses();
123 Iterator iter = types.iterator();
124 while (iter.hasNext()) {
125 ReferenceType type = (ReferenceType)iter.next();
126 if (type.signature().equals(signature)) {
127 return type;
128 }
129 }
130 JNITypeParser parser = new JNITypeParser(signature);
131 throw new ClassNotLoadedException(parser.typeName(),
132 "Class " + parser.typeName() + " not loaded");
133 }
134 }