Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/oops/InstanceKlass.java @ 5998:49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
Summary: Change implementor to embedded instanceKlass field.
Reviewed-by: sspitsyn, minqi, coleenp
| author | jiangli |
|---|---|
| date | Thu, 29 Mar 2012 22:18:56 -0400 |
| parents | f7c4174b33ba |
| children | 71afdabfd05b |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 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 * | |
|
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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.oops; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 import sun.jvm.hotspot.debugger.*; | |
| 30 import sun.jvm.hotspot.memory.*; | |
| 31 import sun.jvm.hotspot.runtime.*; | |
| 32 import sun.jvm.hotspot.types.*; | |
| 33 import sun.jvm.hotspot.utilities.*; | |
| 34 | |
| 35 // An InstanceKlass is the VM level representation of a Java class. | |
| 36 | |
| 37 public class InstanceKlass extends Klass { | |
| 38 static { | |
| 39 VM.registerVMInitializedObserver(new Observer() { | |
| 40 public void update(Observable o, Object data) { | |
| 41 initialize(VM.getVM().getTypeDataBase()); | |
| 42 } | |
| 43 }); | |
| 44 } | |
| 45 | |
| 46 // field offset constants | |
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47 private static int ACCESS_FLAGS_OFFSET; |
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48 private static int NAME_INDEX_OFFSET; |
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49 private static int SIGNATURE_INDEX_OFFSET; |
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50 private static int INITVAL_INDEX_OFFSET; |
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51 private static int LOW_OFFSET; |
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52 private static int HIGH_OFFSET; |
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53 private static int GENERIC_SIGNATURE_INDEX_OFFSET; |
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54 private static int FIELD_SLOTS; |
| 0 | 55 |
| 56 // ClassState constants | |
| 57 private static int CLASS_STATE_UNPARSABLE_BY_GC; | |
| 58 private static int CLASS_STATE_ALLOCATED; | |
| 59 private static int CLASS_STATE_LOADED; | |
| 60 private static int CLASS_STATE_LINKED; | |
| 61 private static int CLASS_STATE_BEING_INITIALIZED; | |
| 62 private static int CLASS_STATE_FULLY_INITIALIZED; | |
| 63 private static int CLASS_STATE_INITIALIZATION_ERROR; | |
| 64 | |
| 65 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { | |
| 66 Type type = db.lookupType("instanceKlass"); | |
| 67 arrayKlasses = new OopField(type.getOopField("_array_klasses"), Oop.getHeaderSize()); | |
| 68 methods = new OopField(type.getOopField("_methods"), Oop.getHeaderSize()); | |
| 69 methodOrdering = new OopField(type.getOopField("_method_ordering"), Oop.getHeaderSize()); | |
| 70 localInterfaces = new OopField(type.getOopField("_local_interfaces"), Oop.getHeaderSize()); | |
| 71 transitiveInterfaces = new OopField(type.getOopField("_transitive_interfaces"), Oop.getHeaderSize()); | |
| 72 fields = new OopField(type.getOopField("_fields"), Oop.getHeaderSize()); | |
| 3938 | 73 javaFieldsCount = new CIntField(type.getCIntegerField("_java_fields_count"), Oop.getHeaderSize()); |
| 0 | 74 constants = new OopField(type.getOopField("_constants"), Oop.getHeaderSize()); |
| 75 classLoader = new OopField(type.getOopField("_class_loader"), Oop.getHeaderSize()); | |
| 76 protectionDomain = new OopField(type.getOopField("_protection_domain"), Oop.getHeaderSize()); | |
| 77 signers = new OopField(type.getOopField("_signers"), Oop.getHeaderSize()); | |
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78 sourceFileName = type.getAddressField("_source_file_name"); |
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79 sourceDebugExtension = type.getAddressField("_source_debug_extension"); |
| 0 | 80 innerClasses = new OopField(type.getOopField("_inner_classes"), Oop.getHeaderSize()); |
| 81 nonstaticFieldSize = new CIntField(type.getCIntegerField("_nonstatic_field_size"), Oop.getHeaderSize()); | |
| 82 staticFieldSize = new CIntField(type.getCIntegerField("_static_field_size"), Oop.getHeaderSize()); | |
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83 staticOopFieldCount = new CIntField(type.getCIntegerField("_static_oop_field_count"), Oop.getHeaderSize()); |
| 0 | 84 nonstaticOopMapSize = new CIntField(type.getCIntegerField("_nonstatic_oop_map_size"), Oop.getHeaderSize()); |
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85 isMarkedDependent = new CIntField(type.getCIntegerField("_is_marked_dependent"), Oop.getHeaderSize()); |
| 0 | 86 initState = new CIntField(type.getCIntegerField("_init_state"), Oop.getHeaderSize()); |
| 87 vtableLen = new CIntField(type.getCIntegerField("_vtable_len"), Oop.getHeaderSize()); | |
| 88 itableLen = new CIntField(type.getCIntegerField("_itable_len"), Oop.getHeaderSize()); | |
| 89 breakpoints = type.getAddressField("_breakpoints"); | |
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90 genericSignature = type.getAddressField("_generic_signature"); |
| 0 | 91 majorVersion = new CIntField(type.getCIntegerField("_major_version"), Oop.getHeaderSize()); |
| 92 minorVersion = new CIntField(type.getCIntegerField("_minor_version"), Oop.getHeaderSize()); | |
| 93 headerSize = alignObjectOffset(Oop.getHeaderSize() + type.getSize()); | |
| 94 | |
| 95 // read field offset constants | |
| 3938 | 96 ACCESS_FLAGS_OFFSET = db.lookupIntConstant("FieldInfo::access_flags_offset").intValue(); |
| 97 NAME_INDEX_OFFSET = db.lookupIntConstant("FieldInfo::name_index_offset").intValue(); | |
| 98 SIGNATURE_INDEX_OFFSET = db.lookupIntConstant("FieldInfo::signature_index_offset").intValue(); | |
| 99 INITVAL_INDEX_OFFSET = db.lookupIntConstant("FieldInfo::initval_index_offset").intValue(); | |
| 100 LOW_OFFSET = db.lookupIntConstant("FieldInfo::low_offset").intValue(); | |
| 101 HIGH_OFFSET = db.lookupIntConstant("FieldInfo::high_offset").intValue(); | |
| 102 GENERIC_SIGNATURE_INDEX_OFFSET = db.lookupIntConstant("FieldInfo::generic_signature_offset").intValue(); | |
| 103 FIELD_SLOTS = db.lookupIntConstant("FieldInfo::field_slots").intValue(); | |
| 0 | 104 // read ClassState constants |
| 105 CLASS_STATE_UNPARSABLE_BY_GC = db.lookupIntConstant("instanceKlass::unparsable_by_gc").intValue(); | |
| 106 CLASS_STATE_ALLOCATED = db.lookupIntConstant("instanceKlass::allocated").intValue(); | |
| 107 CLASS_STATE_LOADED = db.lookupIntConstant("instanceKlass::loaded").intValue(); | |
| 108 CLASS_STATE_LINKED = db.lookupIntConstant("instanceKlass::linked").intValue(); | |
| 109 CLASS_STATE_BEING_INITIALIZED = db.lookupIntConstant("instanceKlass::being_initialized").intValue(); | |
| 110 CLASS_STATE_FULLY_INITIALIZED = db.lookupIntConstant("instanceKlass::fully_initialized").intValue(); | |
| 111 CLASS_STATE_INITIALIZATION_ERROR = db.lookupIntConstant("instanceKlass::initialization_error").intValue(); | |
| 112 | |
| 113 } | |
| 114 | |
| 115 InstanceKlass(OopHandle handle, ObjectHeap heap) { | |
| 116 super(handle, heap); | |
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117 if (getJavaFieldsCount() != getAllFieldsCount()) { |
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118 // Exercise the injected field logic |
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119 for (int i = getJavaFieldsCount(); i < getAllFieldsCount(); i++) { |
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120 getFieldName(i); |
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121 getFieldSignature(i); |
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122 } |
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123 } |
| 0 | 124 } |
| 125 | |
| 126 private static OopField arrayKlasses; | |
| 127 private static OopField methods; | |
| 128 private static OopField methodOrdering; | |
| 129 private static OopField localInterfaces; | |
| 130 private static OopField transitiveInterfaces; | |
| 131 private static OopField fields; | |
| 3938 | 132 private static CIntField javaFieldsCount; |
| 0 | 133 private static OopField constants; |
| 134 private static OopField classLoader; | |
| 135 private static OopField protectionDomain; | |
| 136 private static OopField signers; | |
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137 private static AddressField sourceFileName; |
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138 private static AddressField sourceDebugExtension; |
| 0 | 139 private static OopField innerClasses; |
| 140 private static CIntField nonstaticFieldSize; | |
| 141 private static CIntField staticFieldSize; | |
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142 private static CIntField staticOopFieldCount; |
| 0 | 143 private static CIntField nonstaticOopMapSize; |
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144 private static CIntField isMarkedDependent; |
| 0 | 145 private static CIntField initState; |
| 146 private static CIntField vtableLen; | |
| 147 private static CIntField itableLen; | |
| 148 private static AddressField breakpoints; | |
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149 private static AddressField genericSignature; |
| 0 | 150 private static CIntField majorVersion; |
| 151 private static CIntField minorVersion; | |
| 152 | |
| 153 // type safe enum for ClassState from instanceKlass.hpp | |
| 154 public static class ClassState { | |
| 155 public static final ClassState UNPARSABLE_BY_GC = new ClassState("unparsable_by_gc"); | |
| 156 public static final ClassState ALLOCATED = new ClassState("allocated"); | |
| 157 public static final ClassState LOADED = new ClassState("loaded"); | |
| 158 public static final ClassState LINKED = new ClassState("linked"); | |
| 159 public static final ClassState BEING_INITIALIZED = new ClassState("beingInitialized"); | |
| 160 public static final ClassState FULLY_INITIALIZED = new ClassState("fullyInitialized"); | |
| 161 public static final ClassState INITIALIZATION_ERROR = new ClassState("initializationError"); | |
| 162 | |
| 163 private ClassState(String value) { | |
| 164 this.value = value; | |
| 165 } | |
| 166 | |
| 167 public String toString() { | |
| 168 return value; | |
| 169 } | |
| 170 | |
| 171 private String value; | |
| 172 } | |
| 173 | |
| 3939 | 174 public int getInitStateAsInt() { return (int) initState.getValue(this); } |
| 0 | 175 public ClassState getInitState() { |
| 176 int state = getInitStateAsInt(); | |
| 177 if (state == CLASS_STATE_UNPARSABLE_BY_GC) { | |
| 178 return ClassState.UNPARSABLE_BY_GC; | |
| 179 } else if (state == CLASS_STATE_ALLOCATED) { | |
| 180 return ClassState.ALLOCATED; | |
| 181 } else if (state == CLASS_STATE_LOADED) { | |
| 182 return ClassState.LOADED; | |
| 183 } else if (state == CLASS_STATE_LINKED) { | |
| 184 return ClassState.LINKED; | |
| 185 } else if (state == CLASS_STATE_BEING_INITIALIZED) { | |
| 186 return ClassState.BEING_INITIALIZED; | |
| 187 } else if (state == CLASS_STATE_FULLY_INITIALIZED) { | |
| 188 return ClassState.FULLY_INITIALIZED; | |
| 189 } else if (state == CLASS_STATE_INITIALIZATION_ERROR) { | |
| 190 return ClassState.INITIALIZATION_ERROR; | |
| 191 } else { | |
| 192 throw new RuntimeException("should not reach here"); | |
| 193 } | |
| 194 } | |
| 195 | |
| 196 // initialization state quaries | |
| 197 public boolean isLoaded() { | |
| 198 return getInitStateAsInt() >= CLASS_STATE_LOADED; | |
| 199 } | |
| 200 | |
| 201 public boolean isLinked() { | |
| 202 return getInitStateAsInt() >= CLASS_STATE_LINKED; | |
| 203 } | |
| 204 | |
| 205 public boolean isInitialized() { | |
| 206 return getInitStateAsInt() == CLASS_STATE_FULLY_INITIALIZED; | |
| 207 } | |
| 208 | |
| 209 public boolean isNotInitialized() { | |
| 210 return getInitStateAsInt() < CLASS_STATE_BEING_INITIALIZED; | |
| 211 } | |
| 212 | |
| 213 public boolean isBeingInitialized() { | |
| 214 return getInitStateAsInt() == CLASS_STATE_BEING_INITIALIZED; | |
| 215 } | |
| 216 | |
| 217 public boolean isInErrorState() { | |
| 218 return getInitStateAsInt() == CLASS_STATE_INITIALIZATION_ERROR; | |
| 219 } | |
| 220 | |
| 221 public int getClassStatus() { | |
| 222 int result = 0; | |
| 223 if (isLinked()) { | |
| 224 result |= JVMDIClassStatus.VERIFIED | JVMDIClassStatus.PREPARED; | |
| 225 } | |
| 226 | |
| 227 if (isInitialized()) { | |
| 228 if (Assert.ASSERTS_ENABLED) { | |
| 229 Assert.that(isLinked(), "Class status is not consistent"); | |
| 230 } | |
| 231 result |= JVMDIClassStatus.INITIALIZED; | |
| 232 } | |
| 233 | |
| 234 if (isInErrorState()) { | |
| 235 result |= JVMDIClassStatus.ERROR; | |
| 236 } | |
| 237 return result; | |
| 238 } | |
| 239 | |
| 240 // Byteside of the header | |
| 241 private static long headerSize; | |
| 242 | |
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243 public long getObjectSize(Oop object) { |
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244 return getSizeHelper() * VM.getVM().getAddressSize(); |
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245 } |
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246 |
| 0 | 247 public static long getHeaderSize() { return headerSize; } |
| 248 | |
| 3938 | 249 public short getFieldAccessFlags(int index) { |
| 250 return getFields().getShortAt(index * FIELD_SLOTS + ACCESS_FLAGS_OFFSET); | |
| 251 } | |
| 252 | |
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253 public short getFieldNameIndex(int index) { |
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254 if (index >= getJavaFieldsCount()) throw new IndexOutOfBoundsException("not a Java field;"); |
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255 return getFields().getShortAt(index * FIELD_SLOTS + NAME_INDEX_OFFSET); |
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256 } |
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257 |
| 3938 | 258 public Symbol getFieldName(int index) { |
| 259 int nameIndex = getFields().getShortAt(index * FIELD_SLOTS + NAME_INDEX_OFFSET); | |
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260 if (index < getJavaFieldsCount()) { |
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261 return getConstants().getSymbolAt(nameIndex); |
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262 } else { |
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263 return vmSymbols.symbolAt(nameIndex); |
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264 } |
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265 } |
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266 |
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267 public short getFieldSignatureIndex(int index) { |
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268 if (index >= getJavaFieldsCount()) throw new IndexOutOfBoundsException("not a Java field;"); |
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269 return getFields().getShortAt(index * FIELD_SLOTS + SIGNATURE_INDEX_OFFSET); |
| 3938 | 270 } |
| 271 | |
| 272 public Symbol getFieldSignature(int index) { | |
| 273 int signatureIndex = getFields().getShortAt(index * FIELD_SLOTS + SIGNATURE_INDEX_OFFSET); | |
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274 if (index < getJavaFieldsCount()) { |
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275 return getConstants().getSymbolAt(signatureIndex); |
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276 } else { |
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277 return vmSymbols.symbolAt(signatureIndex); |
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278 } |
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279 } |
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280 |
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281 public short getFieldGenericSignatureIndex(int index) { |
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282 return getFields().getShortAt(index * FIELD_SLOTS + GENERIC_SIGNATURE_INDEX_OFFSET); |
| 3938 | 283 } |
| 284 | |
| 285 public Symbol getFieldGenericSignature(int index) { | |
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286 short genericSignatureIndex = getFieldGenericSignatureIndex(index); |
| 3938 | 287 if (genericSignatureIndex != 0) { |
| 288 return getConstants().getSymbolAt(genericSignatureIndex); | |
| 289 } | |
| 290 return null; | |
| 291 } | |
| 292 | |
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293 public short getFieldInitialValueIndex(int index) { |
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294 if (index >= getJavaFieldsCount()) throw new IndexOutOfBoundsException("not a Java field;"); |
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295 return getFields().getShortAt(index * FIELD_SLOTS + INITVAL_INDEX_OFFSET); |
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296 } |
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297 |
| 3938 | 298 public int getFieldOffset(int index) { |
| 299 TypeArray fields = getFields(); | |
| 300 return VM.getVM().buildIntFromShorts(fields.getShortAt(index * FIELD_SLOTS + LOW_OFFSET), | |
| 301 fields.getShortAt(index * FIELD_SLOTS + HIGH_OFFSET)); | |
| 302 } | |
| 303 | |
| 0 | 304 // Accessors for declared fields |
| 305 public Klass getArrayKlasses() { return (Klass) arrayKlasses.getValue(this); } | |
| 306 public ObjArray getMethods() { return (ObjArray) methods.getValue(this); } | |
| 307 public TypeArray getMethodOrdering() { return (TypeArray) methodOrdering.getValue(this); } | |
| 308 public ObjArray getLocalInterfaces() { return (ObjArray) localInterfaces.getValue(this); } | |
| 309 public ObjArray getTransitiveInterfaces() { return (ObjArray) transitiveInterfaces.getValue(this); } | |
| 310 public TypeArray getFields() { return (TypeArray) fields.getValue(this); } | |
| 3938 | 311 public int getJavaFieldsCount() { return (int) javaFieldsCount.getValue(this); } |
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312 public int getAllFieldsCount() { return (int)getFields().getLength() / FIELD_SLOTS; } |
| 0 | 313 public ConstantPool getConstants() { return (ConstantPool) constants.getValue(this); } |
| 314 public Oop getClassLoader() { return classLoader.getValue(this); } | |
| 315 public Oop getProtectionDomain() { return protectionDomain.getValue(this); } | |
| 316 public ObjArray getSigners() { return (ObjArray) signers.getValue(this); } | |
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317 public Symbol getSourceFileName() { return getSymbol(sourceFileName); } |
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318 public Symbol getSourceDebugExtension(){ return getSymbol(sourceDebugExtension); } |
| 0 | 319 public TypeArray getInnerClasses() { return (TypeArray) innerClasses.getValue(this); } |
| 320 public long getNonstaticFieldSize() { return nonstaticFieldSize.getValue(this); } | |
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321 public long getStaticOopFieldCount() { return staticOopFieldCount.getValue(this); } |
| 0 | 322 public long getNonstaticOopMapSize() { return nonstaticOopMapSize.getValue(this); } |
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323 public boolean getIsMarkedDependent() { return isMarkedDependent.getValue(this) != 0; } |
| 0 | 324 public long getVtableLen() { return vtableLen.getValue(this); } |
| 325 public long getItableLen() { return itableLen.getValue(this); } | |
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326 public Symbol getGenericSignature() { return getSymbol(genericSignature); } |
| 0 | 327 public long majorVersion() { return majorVersion.getValue(this); } |
| 328 public long minorVersion() { return minorVersion.getValue(this); } | |
| 329 | |
| 330 // "size helper" == instance size in words | |
| 331 public long getSizeHelper() { | |
| 332 int lh = getLayoutHelper(); | |
| 333 if (Assert.ASSERTS_ENABLED) { | |
| 334 Assert.that(lh > 0, "layout helper initialized for instance class"); | |
| 335 } | |
| 336 return lh / VM.getVM().getAddressSize(); | |
| 337 } | |
| 338 | |
| 339 // same as enum InnerClassAttributeOffset in VM code. | |
| 340 public static interface InnerClassAttributeOffset { | |
| 341 // from JVM spec. "InnerClasses" attribute | |
| 342 public static final int innerClassInnerClassInfoOffset = 0; | |
| 343 public static final int innerClassOuterClassInfoOffset = 1; | |
| 344 public static final int innerClassInnerNameOffset = 2; | |
| 345 public static final int innerClassAccessFlagsOffset = 3; | |
| 346 public static final int innerClassNextOffset = 4; | |
| 347 }; | |
| 348 | |
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349 public static interface EnclosingMethodAttributeOffset { |
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350 public static final int enclosing_method_class_index_offset = 0; |
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351 public static final int enclosing_method_method_index_offset = 1; |
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352 public static final int enclosing_method_attribute_size = 2; |
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353 }; |
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354 |
| 0 | 355 // refer to compute_modifier_flags in VM code. |
| 356 public long computeModifierFlags() { | |
| 357 long access = getAccessFlags(); | |
| 358 // But check if it happens to be member class. | |
| 359 TypeArray innerClassList = getInnerClasses(); | |
| 360 int length = ( innerClassList == null)? 0 : (int) innerClassList.getLength(); | |
| 361 if (length > 0) { | |
| 362 if (Assert.ASSERTS_ENABLED) { | |
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363 Assert.that(length % InnerClassAttributeOffset.innerClassNextOffset == 0 || |
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364 length % InnerClassAttributeOffset.innerClassNextOffset == EnclosingMethodAttributeOffset.enclosing_method_attribute_size, |
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365 "just checking"); |
| 0 | 366 } |
| 367 for (int i = 0; i < length; i += InnerClassAttributeOffset.innerClassNextOffset) { | |
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368 if (i == length - EnclosingMethodAttributeOffset.enclosing_method_attribute_size) { |
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369 break; |
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370 } |
| 0 | 371 int ioff = innerClassList.getShortAt(i + |
| 372 InnerClassAttributeOffset.innerClassInnerClassInfoOffset); | |
| 373 // 'ioff' can be zero. | |
| 374 // refer to JVM spec. section 4.7.5. | |
| 375 if (ioff != 0) { | |
| 376 // only look at classes that are already loaded | |
| 377 // since we are looking for the flags for our self. | |
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378 ConstantPool.CPSlot classInfo = getConstants().getSlotAt(ioff); |
| 0 | 379 Symbol name = null; |
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380 if (classInfo.isOop()) { |
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381 name = ((Klass) classInfo.getOop()).getName(); |
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382 } else if (classInfo.isMetaData()) { |
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383 name = classInfo.getSymbol(); |
| 0 | 384 } else { |
| 385 throw new RuntimeException("should not reach here"); | |
| 386 } | |
| 387 | |
| 388 if (name.equals(getName())) { | |
| 389 // This is really a member class | |
| 390 access = innerClassList.getShortAt(i + | |
| 391 InnerClassAttributeOffset.innerClassAccessFlagsOffset); | |
| 392 break; | |
| 393 } | |
| 394 } | |
| 395 } // for inner classes | |
| 396 } | |
| 397 | |
| 398 // Remember to strip ACC_SUPER bit | |
| 399 return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS; | |
| 400 } | |
| 401 | |
| 402 | |
| 403 // whether given Symbol is name of an inner/nested Klass of this Klass? | |
| 404 // anonymous and local classes are excluded. | |
| 405 public boolean isInnerClassName(Symbol sym) { | |
| 406 return isInInnerClasses(sym, false); | |
| 407 } | |
| 408 | |
| 409 // whether given Symbol is name of an inner/nested Klass of this Klass? | |
| 410 // anonymous classes excluded, but local classes are included. | |
| 411 public boolean isInnerOrLocalClassName(Symbol sym) { | |
| 412 return isInInnerClasses(sym, true); | |
| 413 } | |
| 414 | |
| 415 private boolean isInInnerClasses(Symbol sym, boolean includeLocals) { | |
| 416 TypeArray innerClassList = getInnerClasses(); | |
| 417 int length = ( innerClassList == null)? 0 : (int) innerClassList.getLength(); | |
| 418 if (length > 0) { | |
| 419 if (Assert.ASSERTS_ENABLED) { | |
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420 Assert.that(length % InnerClassAttributeOffset.innerClassNextOffset == 0 || |
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421 length % InnerClassAttributeOffset.innerClassNextOffset == EnclosingMethodAttributeOffset.enclosing_method_attribute_size, |
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422 "just checking"); |
| 0 | 423 } |
| 424 for (int i = 0; i < length; i += InnerClassAttributeOffset.innerClassNextOffset) { | |
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425 if (i == length - EnclosingMethodAttributeOffset.enclosing_method_attribute_size) { |
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426 break; |
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427 } |
| 0 | 428 int ioff = innerClassList.getShortAt(i + |
| 429 InnerClassAttributeOffset.innerClassInnerClassInfoOffset); | |
| 430 // 'ioff' can be zero. | |
| 431 // refer to JVM spec. section 4.7.5. | |
| 432 if (ioff != 0) { | |
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433 ConstantPool.CPSlot iclassInfo = getConstants().getSlotAt(ioff); |
| 0 | 434 Symbol innerName = null; |
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435 if (iclassInfo.isOop()) { |
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436 innerName = ((Klass) iclassInfo.getOop()).getName(); |
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437 } else if (iclassInfo.isMetaData()) { |
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438 innerName = iclassInfo.getSymbol(); |
| 0 | 439 } else { |
| 440 throw new RuntimeException("should not reach here"); | |
| 441 } | |
| 442 | |
| 443 Symbol myname = getName(); | |
| 444 int ooff = innerClassList.getShortAt(i + | |
| 445 InnerClassAttributeOffset.innerClassOuterClassInfoOffset); | |
| 446 // for anonymous classes inner_name_index of InnerClasses | |
| 447 // attribute is zero. | |
| 448 int innerNameIndex = innerClassList.getShortAt(i + | |
| 449 InnerClassAttributeOffset.innerClassInnerNameOffset); | |
| 450 // if this is not a member (anonymous, local etc.), 'ooff' will be zero | |
| 451 // refer to JVM spec. section 4.7.5. | |
| 452 if (ooff == 0) { | |
| 453 if (includeLocals) { | |
| 454 // does it looks like my local class? | |
| 455 if (innerName.equals(sym) && | |
| 456 innerName.asString().startsWith(myname.asString())) { | |
| 457 // exclude anonymous classes. | |
| 458 return (innerNameIndex != 0); | |
| 459 } | |
| 460 } | |
| 461 } else { | |
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462 ConstantPool.CPSlot oclassInfo = getConstants().getSlotAt(ooff); |
| 0 | 463 Symbol outerName = null; |
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464 if (oclassInfo.isOop()) { |
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465 outerName = ((Klass) oclassInfo.getOop()).getName(); |
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466 } else if (oclassInfo.isMetaData()) { |
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467 outerName = oclassInfo.getSymbol(); |
| 0 | 468 } else { |
| 469 throw new RuntimeException("should not reach here"); | |
| 470 } | |
| 471 | |
| 472 // include only if current class is outer class. | |
| 473 if (outerName.equals(myname) && innerName.equals(sym)) { | |
| 474 return true; | |
| 475 } | |
| 476 } | |
| 477 } | |
| 478 } // for inner classes | |
| 479 return false; | |
| 480 } else { | |
| 481 return false; | |
| 482 } | |
| 483 } | |
| 484 | |
| 485 public boolean implementsInterface(Klass k) { | |
| 486 if (Assert.ASSERTS_ENABLED) { | |
| 487 Assert.that(k.isInterface(), "should not reach here"); | |
| 488 } | |
| 489 ObjArray interfaces = getTransitiveInterfaces(); | |
| 490 final int len = (int) interfaces.getLength(); | |
| 491 for (int i = 0; i < len; i++) { | |
| 492 if (interfaces.getObjAt(i).equals(k)) return true; | |
| 493 } | |
| 494 return false; | |
| 495 } | |
| 496 | |
| 497 boolean computeSubtypeOf(Klass k) { | |
| 498 if (k.isInterface()) { | |
| 499 return implementsInterface(k); | |
| 500 } else { | |
| 501 return super.computeSubtypeOf(k); | |
| 502 } | |
| 503 } | |
| 504 | |
| 505 public void printValueOn(PrintStream tty) { | |
| 506 tty.print("InstanceKlass for " + getName().asString()); | |
| 507 } | |
| 508 | |
| 509 public void iterateFields(OopVisitor visitor, boolean doVMFields) { | |
| 510 super.iterateFields(visitor, doVMFields); | |
| 511 if (doVMFields) { | |
| 512 visitor.doOop(arrayKlasses, true); | |
| 513 visitor.doOop(methods, true); | |
| 514 visitor.doOop(methodOrdering, true); | |
| 515 visitor.doOop(localInterfaces, true); | |
| 516 visitor.doOop(transitiveInterfaces, true); | |
| 517 visitor.doOop(fields, true); | |
| 518 visitor.doOop(constants, true); | |
| 519 visitor.doOop(classLoader, true); | |
| 520 visitor.doOop(protectionDomain, true); | |
| 521 visitor.doOop(signers, true); | |
| 522 visitor.doOop(innerClasses, true); | |
| 523 visitor.doCInt(nonstaticFieldSize, true); | |
| 524 visitor.doCInt(staticFieldSize, true); | |
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525 visitor.doCInt(staticOopFieldCount, true); |
| 0 | 526 visitor.doCInt(nonstaticOopMapSize, true); |
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527 visitor.doCInt(isMarkedDependent, true); |
| 0 | 528 visitor.doCInt(initState, true); |
| 529 visitor.doCInt(vtableLen, true); | |
| 530 visitor.doCInt(itableLen, true); | |
| 531 } | |
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532 } |
| 0 | 533 |
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534 /* |
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535 * Visit the static fields of this InstanceKlass with the obj of |
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536 * the visitor set to the oop holding the fields, which is |
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537 * currently the java mirror. |
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538 */ |
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539 public void iterateStaticFields(OopVisitor visitor) { |
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540 visitor.setObj(getJavaMirror()); |
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541 visitor.prologue(); |
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542 iterateStaticFieldsInternal(visitor); |
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543 visitor.epilogue(); |
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544 |
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545 } |
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546 |
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547 void iterateStaticFieldsInternal(OopVisitor visitor) { |
| 3938 | 548 int length = getJavaFieldsCount(); |
| 3944 | 549 for (int index = 0; index < length; index++) { |
| 550 short accessFlags = getFieldAccessFlags(index); | |
| 551 FieldType type = new FieldType(getFieldSignature(index)); | |
| 0 | 552 AccessFlags access = new AccessFlags(accessFlags); |
| 553 if (access.isStatic()) { | |
| 554 visitField(visitor, type, index); | |
| 555 } | |
| 556 } | |
| 557 } | |
| 558 | |
| 559 public Klass getJavaSuper() { | |
| 560 return getSuper(); | |
| 561 } | |
| 562 | |
| 3939 | 563 public static class StaticField { |
| 564 public AccessFlags flags; | |
| 565 public Field field; | |
| 566 | |
| 567 StaticField(Field field, AccessFlags flags) { | |
| 568 this.field = field; | |
| 569 this.flags = flags; | |
| 570 } | |
| 571 } | |
| 572 | |
|
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573 public void iterateNonStaticFields(OopVisitor visitor, Oop obj) { |
| 0 | 574 if (getSuper() != null) { |
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575 ((InstanceKlass) getSuper()).iterateNonStaticFields(visitor, obj); |
| 0 | 576 } |
| 3938 | 577 int length = getJavaFieldsCount(); |
| 3944 | 578 for (int index = 0; index < length; index++) { |
| 579 short accessFlags = getFieldAccessFlags(index); | |
| 580 FieldType type = new FieldType(getFieldSignature(index)); | |
| 0 | 581 AccessFlags access = new AccessFlags(accessFlags); |
| 582 if (!access.isStatic()) { | |
| 583 visitField(visitor, type, index); | |
| 584 } | |
| 585 } | |
| 586 } | |
| 587 | |
| 588 /** Field access by name. */ | |
| 589 public Field findLocalField(Symbol name, Symbol sig) { | |
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590 int length = getJavaFieldsCount(); |
| 3944 | 591 for (int i = 0; i < length; i++) { |
| 592 Symbol f_name = getFieldName(i); | |
| 593 Symbol f_sig = getFieldSignature(i); | |
| 0 | 594 if (name.equals(f_name) && sig.equals(f_sig)) { |
| 595 return newField(i); | |
| 596 } | |
| 597 } | |
| 598 | |
| 599 return null; | |
| 600 } | |
| 601 | |
| 602 /** Find field in direct superinterfaces. */ | |
| 603 public Field findInterfaceField(Symbol name, Symbol sig) { | |
| 604 ObjArray interfaces = getLocalInterfaces(); | |
| 605 int n = (int) interfaces.getLength(); | |
| 606 for (int i = 0; i < n; i++) { | |
| 607 InstanceKlass intf1 = (InstanceKlass) interfaces.getObjAt(i); | |
| 608 if (Assert.ASSERTS_ENABLED) { | |
| 609 Assert.that(intf1.isInterface(), "just checking type"); | |
| 610 } | |
| 611 // search for field in current interface | |
| 612 Field f = intf1.findLocalField(name, sig); | |
| 613 if (f != null) { | |
| 614 if (Assert.ASSERTS_ENABLED) { | |
| 615 Assert.that(f.getAccessFlagsObj().isStatic(), "interface field must be static"); | |
| 616 } | |
| 617 return f; | |
| 618 } | |
| 619 // search for field in direct superinterfaces | |
| 620 f = intf1.findInterfaceField(name, sig); | |
| 621 if (f != null) return f; | |
| 622 } | |
| 623 // otherwise field lookup fails | |
| 624 return null; | |
| 625 } | |
| 626 | |
| 627 /** Find field according to JVM spec 5.4.3.2, returns the klass in | |
| 628 which the field is defined. */ | |
| 629 public Field findField(Symbol name, Symbol sig) { | |
| 630 // search order according to newest JVM spec (5.4.3.2, p.167). | |
| 631 // 1) search for field in current klass | |
| 632 Field f = findLocalField(name, sig); | |
| 633 if (f != null) return f; | |
| 634 | |
| 635 // 2) search for field recursively in direct superinterfaces | |
| 636 f = findInterfaceField(name, sig); | |
| 637 if (f != null) return f; | |
| 638 | |
| 639 // 3) apply field lookup recursively if superclass exists | |
| 640 InstanceKlass supr = (InstanceKlass) getSuper(); | |
| 641 if (supr != null) return supr.findField(name, sig); | |
| 642 | |
| 643 // 4) otherwise field lookup fails | |
| 644 return null; | |
| 645 } | |
| 646 | |
| 647 /** Find field according to JVM spec 5.4.3.2, returns the klass in | |
| 648 which the field is defined (convenience routine) */ | |
| 649 public Field findField(String name, String sig) { | |
| 650 SymbolTable symbols = VM.getVM().getSymbolTable(); | |
| 651 Symbol nameSym = symbols.probe(name); | |
| 652 Symbol sigSym = symbols.probe(sig); | |
| 653 if (nameSym == null || sigSym == null) { | |
| 654 return null; | |
| 655 } | |
| 656 return findField(nameSym, sigSym); | |
| 657 } | |
| 658 | |
| 659 /** Find field according to JVM spec 5.4.3.2, returns the klass in | |
| 660 which the field is defined (retained only for backward | |
| 661 compatibility with jdbx) */ | |
| 662 public Field findFieldDbg(String name, String sig) { | |
| 663 return findField(name, sig); | |
| 664 } | |
| 665 | |
| 666 /** Get field by its index in the fields array. Only designed for | |
| 667 use in a debugging system. */ | |
| 3944 | 668 public Field getFieldByIndex(int fieldIndex) { |
| 669 return newField(fieldIndex); | |
| 0 | 670 } |
| 671 | |
| 672 | |
| 673 /** Return a List of SA Fields for the fields declared in this class. | |
| 674 Inherited fields are not included. | |
| 675 Return an empty list if there are no fields declared in this class. | |
| 676 Only designed for use in a debugging system. */ | |
| 677 public List getImmediateFields() { | |
| 678 // A list of Fields for each field declared in this class/interface, | |
| 679 // not including inherited fields. | |
| 3938 | 680 int length = getJavaFieldsCount(); |
| 681 List immediateFields = new ArrayList(length); | |
| 3944 | 682 for (int index = 0; index < length; index++) { |
| 0 | 683 immediateFields.add(getFieldByIndex(index)); |
| 684 } | |
| 685 | |
| 686 return immediateFields; | |
| 687 } | |
| 688 | |
| 689 /** Return a List of SA Fields for all the java fields in this class, | |
| 690 including all inherited fields. This includes hidden | |
| 691 fields. Thus the returned list can contain fields with | |
| 692 the same name. | |
| 693 Return an empty list if there are no fields. | |
| 694 Only designed for use in a debugging system. */ | |
| 695 public List getAllFields() { | |
| 696 // Contains a Field for each field in this class, including immediate | |
| 697 // fields and inherited fields. | |
| 698 List allFields = getImmediateFields(); | |
| 699 | |
| 700 // transitiveInterfaces contains all interfaces implemented | |
| 701 // by this class and its superclass chain with no duplicates. | |
| 702 | |
| 703 ObjArray interfaces = getTransitiveInterfaces(); | |
| 704 int n = (int) interfaces.getLength(); | |
| 705 for (int i = 0; i < n; i++) { | |
| 706 InstanceKlass intf1 = (InstanceKlass) interfaces.getObjAt(i); | |
| 707 if (Assert.ASSERTS_ENABLED) { | |
| 708 Assert.that(intf1.isInterface(), "just checking type"); | |
| 709 } | |
| 710 allFields.addAll(intf1.getImmediateFields()); | |
| 711 } | |
| 712 | |
| 713 // Get all fields in the superclass, recursively. But, don't | |
| 714 // include fields in interfaces implemented by superclasses; | |
| 715 // we already have all those. | |
| 716 if (!isInterface()) { | |
| 717 InstanceKlass supr; | |
| 718 if ( (supr = (InstanceKlass) getSuper()) != null) { | |
| 719 allFields.addAll(supr.getImmediateFields()); | |
| 720 } | |
| 721 } | |
| 722 | |
| 723 return allFields; | |
| 724 } | |
| 725 | |
| 726 | |
| 727 /** Return a List of SA Methods declared directly in this class/interface. | |
| 728 Return an empty list if there are none, or if this isn't a class/ | |
| 729 interface. | |
| 730 */ | |
| 731 public List getImmediateMethods() { | |
| 732 // Contains a Method for each method declared in this class/interface | |
| 733 // not including inherited methods. | |
| 734 | |
| 735 ObjArray methods = getMethods(); | |
| 736 int length = (int)methods.getLength(); | |
| 737 Object[] tmp = new Object[length]; | |
| 738 | |
| 739 TypeArray methodOrdering = getMethodOrdering(); | |
| 740 if (methodOrdering.getLength() != length) { | |
| 741 // no ordering info present | |
| 742 for (int index = 0; index < length; index++) { | |
| 743 tmp[index] = methods.getObjAt(index); | |
| 744 } | |
| 745 } else { | |
| 746 for (int index = 0; index < length; index++) { | |
| 747 int originalIndex = getMethodOrdering().getIntAt(index); | |
| 748 tmp[originalIndex] = methods.getObjAt(index); | |
| 749 } | |
| 750 } | |
| 751 | |
| 752 return Arrays.asList(tmp); | |
| 753 } | |
| 754 | |
| 755 /** Return a List containing an SA InstanceKlass for each | |
| 756 interface named in this class's 'implements' clause. | |
| 757 */ | |
| 758 public List getDirectImplementedInterfaces() { | |
| 759 // Contains an InstanceKlass for each interface in this classes | |
| 760 // 'implements' clause. | |
| 761 | |
| 762 ObjArray interfaces = getLocalInterfaces(); | |
| 763 int length = (int) interfaces.getLength(); | |
| 764 List directImplementedInterfaces = new ArrayList(length); | |
| 765 | |
| 766 for (int index = 0; index < length; index ++) { | |
| 767 directImplementedInterfaces.add(interfaces.getObjAt(index)); | |
| 768 } | |
| 769 | |
| 770 return directImplementedInterfaces; | |
| 771 } | |
| 772 | |
| 773 | |
| 774 public long getObjectSize() { | |
| 775 long bodySize = alignObjectOffset(getVtableLen() * getHeap().getOopSize()) | |
| 776 + alignObjectOffset(getItableLen() * getHeap().getOopSize()) | |
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777 + (getNonstaticOopMapSize()) * getHeap().getOopSize(); |
| 0 | 778 return alignObjectSize(headerSize + bodySize); |
| 779 } | |
| 780 | |
| 781 public Klass arrayKlassImpl(boolean orNull, int n) { | |
| 782 // FIXME: in reflective system this would need to change to | |
| 783 // actually allocate | |
| 784 if (getArrayKlasses() == null) { return null; } | |
| 785 ObjArrayKlass oak = (ObjArrayKlass) getArrayKlasses(); | |
| 786 if (orNull) { | |
| 787 return oak.arrayKlassOrNull(n); | |
| 788 } | |
| 789 return oak.arrayKlass(n); | |
| 790 } | |
| 791 | |
| 792 public Klass arrayKlassImpl(boolean orNull) { | |
| 793 return arrayKlassImpl(orNull, 1); | |
| 794 } | |
| 795 | |
| 796 public String signature() { | |
| 797 return "L" + super.signature() + ";"; | |
| 798 } | |
| 799 | |
| 800 /** Convenience routine taking Strings; lookup is done in | |
| 801 SymbolTable. */ | |
| 802 public Method findMethod(String name, String sig) { | |
| 803 SymbolTable syms = VM.getVM().getSymbolTable(); | |
| 804 Symbol nameSym = syms.probe(name); | |
| 805 Symbol sigSym = syms.probe(sig); | |
| 806 if (nameSym == null || sigSym == null) { | |
| 807 return null; | |
| 808 } | |
| 809 return findMethod(nameSym, sigSym); | |
| 810 } | |
| 811 | |
| 812 /** Find method in vtable. */ | |
| 813 public Method findMethod(Symbol name, Symbol sig) { | |
| 814 return findMethod(getMethods(), name, sig); | |
| 815 } | |
| 816 | |
| 817 /** Breakpoint support (see methods on methodOop for details) */ | |
| 818 public BreakpointInfo getBreakpoints() { | |
| 819 Address addr = getHandle().getAddressAt(Oop.getHeaderSize() + breakpoints.getOffset()); | |
| 820 return (BreakpointInfo) VMObjectFactory.newObject(BreakpointInfo.class, addr); | |
| 821 } | |
| 822 | |
| 823 //---------------------------------------------------------------------- | |
| 824 // Internals only below this point | |
| 825 // | |
| 826 | |
| 827 private void visitField(OopVisitor visitor, FieldType type, int index) { | |
| 828 Field f = newField(index); | |
| 829 if (type.isOop()) { | |
| 830 visitor.doOop((OopField) f, false); | |
| 831 return; | |
| 832 } | |
| 833 if (type.isByte()) { | |
| 834 visitor.doByte((ByteField) f, false); | |
| 835 return; | |
| 836 } | |
| 837 if (type.isChar()) { | |
| 838 visitor.doChar((CharField) f, false); | |
| 839 return; | |
| 840 } | |
| 841 if (type.isDouble()) { | |
| 842 visitor.doDouble((DoubleField) f, false); | |
| 843 return; | |
| 844 } | |
| 845 if (type.isFloat()) { | |
| 846 visitor.doFloat((FloatField) f, false); | |
| 847 return; | |
| 848 } | |
| 849 if (type.isInt()) { | |
| 850 visitor.doInt((IntField) f, false); | |
| 851 return; | |
| 852 } | |
| 853 if (type.isLong()) { | |
| 854 visitor.doLong((LongField) f, false); | |
| 855 return; | |
| 856 } | |
| 857 if (type.isShort()) { | |
| 858 visitor.doShort((ShortField) f, false); | |
| 859 return; | |
| 860 } | |
| 861 if (type.isBoolean()) { | |
| 862 visitor.doBoolean((BooleanField) f, false); | |
| 863 return; | |
| 864 } | |
| 865 } | |
| 866 | |
| 867 // Creates new field from index in fields TypeArray | |
| 868 private Field newField(int index) { | |
| 3944 | 869 FieldType type = new FieldType(getFieldSignature(index)); |
| 0 | 870 if (type.isOop()) { |
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871 if (VM.getVM().isCompressedOopsEnabled()) { |
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872 return new NarrowOopField(this, index); |
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873 } else { |
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874 return new OopField(this, index); |
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875 } |
| 0 | 876 } |
| 877 if (type.isByte()) { | |
| 878 return new ByteField(this, index); | |
| 879 } | |
| 880 if (type.isChar()) { | |
| 881 return new CharField(this, index); | |
| 882 } | |
| 883 if (type.isDouble()) { | |
| 884 return new DoubleField(this, index); | |
| 885 } | |
| 886 if (type.isFloat()) { | |
| 887 return new FloatField(this, index); | |
| 888 } | |
| 889 if (type.isInt()) { | |
| 890 return new IntField(this, index); | |
| 891 } | |
| 892 if (type.isLong()) { | |
| 893 return new LongField(this, index); | |
| 894 } | |
| 895 if (type.isShort()) { | |
| 896 return new ShortField(this, index); | |
| 897 } | |
| 898 if (type.isBoolean()) { | |
| 899 return new BooleanField(this, index); | |
| 900 } | |
| 901 throw new RuntimeException("Illegal field type at index " + index); | |
| 902 } | |
| 903 | |
| 904 private static Method findMethod(ObjArray methods, Symbol name, Symbol signature) { | |
| 905 int len = (int) methods.getLength(); | |
| 906 // methods are sorted, so do binary search | |
| 907 int l = 0; | |
| 908 int h = len - 1; | |
| 909 while (l <= h) { | |
| 910 int mid = (l + h) >> 1; | |
| 911 Method m = (Method) methods.getObjAt(mid); | |
| 912 int res = m.getName().fastCompare(name); | |
| 913 if (res == 0) { | |
| 914 // found matching name; do linear search to find matching signature | |
| 915 // first, quick check for common case | |
| 916 if (m.getSignature().equals(signature)) return m; | |
| 917 // search downwards through overloaded methods | |
| 918 int i; | |
| 919 for (i = mid - 1; i >= l; i--) { | |
| 920 Method m1 = (Method) methods.getObjAt(i); | |
| 921 if (!m1.getName().equals(name)) break; | |
| 922 if (m1.getSignature().equals(signature)) return m1; | |
| 923 } | |
| 924 // search upwards | |
| 925 for (i = mid + 1; i <= h; i++) { | |
| 926 Method m1 = (Method) methods.getObjAt(i); | |
| 927 if (!m1.getName().equals(name)) break; | |
| 928 if (m1.getSignature().equals(signature)) return m1; | |
| 929 } | |
| 930 // not found | |
| 931 if (Assert.ASSERTS_ENABLED) { | |
| 932 int index = linearSearch(methods, name, signature); | |
| 933 if (index != -1) { | |
| 934 throw new DebuggerException("binary search bug: should have found entry " + index); | |
| 935 } | |
| 936 } | |
| 937 return null; | |
| 938 } else if (res < 0) { | |
| 939 l = mid + 1; | |
| 940 } else { | |
| 941 h = mid - 1; | |
| 942 } | |
| 943 } | |
| 944 if (Assert.ASSERTS_ENABLED) { | |
| 945 int index = linearSearch(methods, name, signature); | |
| 946 if (index != -1) { | |
| 947 throw new DebuggerException("binary search bug: should have found entry " + index); | |
| 948 } | |
| 949 } | |
| 950 return null; | |
| 951 } | |
| 952 | |
| 953 private static int linearSearch(ObjArray methods, Symbol name, Symbol signature) { | |
| 954 int len = (int) methods.getLength(); | |
| 955 for (int index = 0; index < len; index++) { | |
| 956 Method m = (Method) methods.getObjAt(index); | |
| 957 if (m.getSignature().equals(signature) && m.getName().equals(name)) { | |
| 958 return index; | |
| 959 } | |
| 960 } | |
| 961 return -1; | |
| 962 } | |
| 963 } |