Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/memory/SystemDictionary.java @ 3908:7588156f5cf9
7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
Reviewed-by: kvn
| author | never |
|---|---|
| date | Mon, 05 Sep 2011 17:09:05 -0700 |
| parents | 0a8e0d4345b3 |
| children | b2cd0ee8f778 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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7010068: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - first pass
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2 * Copyright (c) 2001, 2010, 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.memory; | |
| 26 | |
| 27 import java.util.*; | |
| 28 import sun.jvm.hotspot.debugger.*; | |
| 29 import sun.jvm.hotspot.oops.*; | |
| 30 import sun.jvm.hotspot.runtime.*; | |
| 31 import sun.jvm.hotspot.types.*; | |
| 32 | |
| 33 public class SystemDictionary { | |
| 34 private static AddressField dictionaryField; | |
| 35 private static AddressField sharedDictionaryField; | |
| 36 private static AddressField placeholdersField; | |
| 37 private static AddressField loaderConstraintTableField; | |
| 147 | 38 private static sun.jvm.hotspot.types.OopField javaSystemLoaderField; |
| 0 | 39 private static int nofBuckets; |
| 40 | |
| 147 | 41 private static sun.jvm.hotspot.types.OopField objectKlassField; |
| 42 private static sun.jvm.hotspot.types.OopField classLoaderKlassField; | |
| 43 private static sun.jvm.hotspot.types.OopField stringKlassField; | |
| 44 private static sun.jvm.hotspot.types.OopField systemKlassField; | |
| 45 private static sun.jvm.hotspot.types.OopField threadKlassField; | |
| 46 private static sun.jvm.hotspot.types.OopField threadGroupKlassField; | |
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47 private static sun.jvm.hotspot.types.OopField methodHandleKlassField; |
| 0 | 48 |
| 49 static { | |
| 50 VM.registerVMInitializedObserver(new Observer() { | |
| 51 public void update(Observable o, Object data) { | |
| 52 initialize(VM.getVM().getTypeDataBase()); | |
| 53 } | |
| 54 }); | |
| 55 } | |
| 56 | |
| 57 private static synchronized void initialize(TypeDataBase db) { | |
| 58 Type type = db.lookupType("SystemDictionary"); | |
| 59 | |
| 60 dictionaryField = type.getAddressField("_dictionary"); | |
| 61 sharedDictionaryField = type.getAddressField("_shared_dictionary"); | |
| 62 placeholdersField = type.getAddressField("_placeholders"); | |
| 63 loaderConstraintTableField = type.getAddressField("_loader_constraints"); | |
| 64 javaSystemLoaderField = type.getOopField("_java_system_loader"); | |
| 65 nofBuckets = db.lookupIntConstant("SystemDictionary::_nof_buckets").intValue(); | |
| 66 | |
| 1142 | 67 objectKlassField = type.getOopField(WK_KLASS("Object_klass")); |
| 68 classLoaderKlassField = type.getOopField(WK_KLASS("ClassLoader_klass")); | |
| 69 stringKlassField = type.getOopField(WK_KLASS("String_klass")); | |
| 70 systemKlassField = type.getOopField(WK_KLASS("System_klass")); | |
| 71 threadKlassField = type.getOopField(WK_KLASS("Thread_klass")); | |
| 72 threadGroupKlassField = type.getOopField(WK_KLASS("ThreadGroup_klass")); | |
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73 methodHandleKlassField = type.getOopField(WK_KLASS("MethodHandle_klass")); |
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132
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74 } |
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75 |
| 147 | 76 // This WK functions must follow the definitions in systemDictionary.hpp: |
| 77 private static String WK_KLASS(String name) { | |
| 78 //#define WK_KLASS(name) _well_known_klasses[SystemDictionary::WK_KLASS_ENUM_NAME(name)] | |
| 79 return ("_well_known_klasses[SystemDictionary::"+WK_KLASS_ENUM_NAME(name)+"]"); | |
| 80 } | |
| 81 private static String WK_KLASS_ENUM_NAME(String kname) { | |
| 82 //#define WK_KLASS_ENUM_NAME(kname) kname##_knum | |
| 83 return (kname+"_knum"); | |
| 0 | 84 } |
| 85 | |
| 86 public Dictionary dictionary() { | |
| 87 Address tmp = dictionaryField.getValue(); | |
| 88 return (Dictionary) VMObjectFactory.newObject(Dictionary.class, tmp); | |
| 89 } | |
| 90 | |
| 91 public Dictionary sharedDictionary() { | |
| 92 Address tmp = sharedDictionaryField.getValue(); | |
| 93 return (Dictionary) VMObjectFactory.newObject(Dictionary.class, tmp); | |
| 94 } | |
| 95 | |
| 96 public PlaceholderTable placeholders() { | |
| 97 Address tmp = placeholdersField.getValue(); | |
| 98 return (PlaceholderTable) VMObjectFactory.newObject(PlaceholderTable.class, tmp); | |
| 99 } | |
| 100 | |
| 101 public LoaderConstraintTable constraints() { | |
| 102 Address tmp = placeholdersField.getValue(); | |
| 103 return (LoaderConstraintTable) VMObjectFactory.newObject(LoaderConstraintTable.class, tmp); | |
| 104 } | |
| 105 | |
| 106 // few well known classes -- not all are added here. | |
| 107 // add more if needed. | |
| 108 public static InstanceKlass getThreadKlass() { | |
| 109 return (InstanceKlass) newOop(threadKlassField.getValue()); | |
| 110 } | |
| 111 | |
| 112 public static InstanceKlass getThreadGroupKlass() { | |
| 113 return (InstanceKlass) newOop(threadGroupKlassField.getValue()); | |
| 114 } | |
| 115 | |
| 116 public static InstanceKlass getObjectKlass() { | |
| 117 return (InstanceKlass) newOop(objectKlassField.getValue()); | |
| 118 } | |
| 119 | |
| 120 public static InstanceKlass getStringKlass() { | |
| 121 return (InstanceKlass) newOop(stringKlassField.getValue()); | |
| 122 } | |
| 123 | |
| 124 public static InstanceKlass getClassLoaderKlass() { | |
| 125 return (InstanceKlass) newOop(classLoaderKlassField.getValue()); | |
| 126 } | |
| 127 | |
| 128 public static InstanceKlass getSystemKlass() { | |
| 129 return (InstanceKlass) newOop(systemKlassField.getValue()); | |
| 130 } | |
| 131 | |
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132 public static InstanceKlass getMethodHandleKlass() { |
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133 return (InstanceKlass) newOop(methodHandleKlassField.getValue()); |
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134 } |
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135 |
| 0 | 136 public InstanceKlass getAbstractOwnableSynchronizerKlass() { |
| 137 return (InstanceKlass) find("java/util/concurrent/locks/AbstractOwnableSynchronizer", | |
| 138 null, null); | |
| 139 } | |
| 140 | |
| 141 public static Oop javaSystemLoader() { | |
| 142 return newOop(javaSystemLoaderField.getValue()); | |
| 143 } | |
| 144 | |
| 145 public static int getNumOfBuckets() { | |
| 146 return nofBuckets; | |
| 147 } | |
| 148 | |
| 149 private static Oop newOop(OopHandle handle) { | |
| 150 return VM.getVM().getObjectHeap().newOop(handle); | |
| 151 } | |
| 152 | |
| 153 /** Lookup an already loaded class. If not found null is returned. */ | |
| 154 public Klass find(String className, Oop classLoader, Oop protectionDomain) { | |
| 155 Symbol sym = VM.getVM().getSymbolTable().probe(className); | |
| 156 if (sym == null) return null; | |
| 157 return find(sym, classLoader, protectionDomain); | |
| 158 } | |
| 159 | |
| 160 /** Lookup an already loaded class. If not found null is returned. */ | |
| 161 public Klass find(Symbol className, Oop classLoader, Oop protectionDomain) { | |
| 162 Dictionary dict = dictionary(); | |
| 163 long hash = dict.computeHash(className, classLoader); | |
| 164 int index = dict.hashToIndex(hash); | |
| 165 return dict.find(index, hash, className, classLoader, protectionDomain); | |
| 166 } | |
| 167 | |
| 168 /** Interface for iterating through all classes in dictionary */ | |
| 169 public static interface ClassVisitor { | |
| 170 public void visit(Klass k); | |
| 171 } | |
| 172 | |
| 173 /** Interface for iterating through all classes and their class | |
| 174 loaders in dictionary */ | |
| 175 public static interface ClassAndLoaderVisitor { | |
| 176 public void visit(Klass k, Oop loader); | |
| 177 } | |
| 178 | |
| 179 /** Iterate over all klasses - including object, primitive | |
| 180 array klasses */ | |
| 181 public void allClassesDo(final ClassVisitor v) { | |
| 182 ClassVisitor visitor = new ClassVisitor() { | |
| 183 public void visit(Klass k) { | |
| 184 for (Klass l = k; l != null; l = l.arrayKlassOrNull()) { | |
| 185 v.visit(l); | |
| 186 } | |
| 187 } | |
| 188 }; | |
| 189 classesDo(visitor); | |
| 190 VM.getVM().getUniverse().basicTypeClassesDo(visitor); | |
| 191 } | |
| 192 | |
| 193 /** Iterate over all klasses in dictionary; just the classes from | |
| 194 declaring class loaders */ | |
| 195 public void classesDo(ClassVisitor v) { | |
| 196 dictionary().classesDo(v); | |
| 197 } | |
| 198 | |
| 199 /** All classes, and their class loaders */ | |
| 200 public void classesDo(ClassAndLoaderVisitor v) { | |
| 201 dictionary().classesDo(v); | |
| 202 } | |
| 203 | |
| 204 /** All array classes of primitive type, and their class loaders */ | |
| 205 public void primArrayClassesDo(ClassAndLoaderVisitor v) { | |
| 206 placeholders().primArrayClassesDo(v); | |
| 207 } | |
| 208 } |