Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/oops/InstanceKlass.java @ 6100:71afdabfd05b
7168280: Eliminate the generic signature index slot from field array for field without generic signature.
Summary: Only allocate the generic signature index slot in the field array for field with generic signature attribute.
Reviewed-by: coleenp, dlong
author | jiangli |
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date | Mon, 21 May 2012 14:10:35 -0400 |
parents | 49036505ab5f |
children | 04ade88d9712 |
rev | line source |
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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 FIELD_SLOTS; |
0 | 54 |
55 // ClassState constants | |
56 private static int CLASS_STATE_UNPARSABLE_BY_GC; | |
57 private static int CLASS_STATE_ALLOCATED; | |
58 private static int CLASS_STATE_LOADED; | |
59 private static int CLASS_STATE_LINKED; | |
60 private static int CLASS_STATE_BEING_INITIALIZED; | |
61 private static int CLASS_STATE_FULLY_INITIALIZED; | |
62 private static int CLASS_STATE_INITIALIZATION_ERROR; | |
63 | |
64 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { | |
65 Type type = db.lookupType("instanceKlass"); | |
66 arrayKlasses = new OopField(type.getOopField("_array_klasses"), Oop.getHeaderSize()); | |
67 methods = new OopField(type.getOopField("_methods"), Oop.getHeaderSize()); | |
68 methodOrdering = new OopField(type.getOopField("_method_ordering"), Oop.getHeaderSize()); | |
69 localInterfaces = new OopField(type.getOopField("_local_interfaces"), Oop.getHeaderSize()); | |
70 transitiveInterfaces = new OopField(type.getOopField("_transitive_interfaces"), Oop.getHeaderSize()); | |
71 fields = new OopField(type.getOopField("_fields"), Oop.getHeaderSize()); | |
3938 | 72 javaFieldsCount = new CIntField(type.getCIntegerField("_java_fields_count"), Oop.getHeaderSize()); |
0 | 73 constants = new OopField(type.getOopField("_constants"), Oop.getHeaderSize()); |
74 classLoader = new OopField(type.getOopField("_class_loader"), Oop.getHeaderSize()); | |
75 protectionDomain = new OopField(type.getOopField("_protection_domain"), Oop.getHeaderSize()); | |
76 signers = new OopField(type.getOopField("_signers"), Oop.getHeaderSize()); | |
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77 sourceFileName = type.getAddressField("_source_file_name"); |
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78 sourceDebugExtension = type.getAddressField("_source_debug_extension"); |
0 | 79 innerClasses = new OopField(type.getOopField("_inner_classes"), Oop.getHeaderSize()); |
80 nonstaticFieldSize = new CIntField(type.getCIntegerField("_nonstatic_field_size"), Oop.getHeaderSize()); | |
81 staticFieldSize = new CIntField(type.getCIntegerField("_static_field_size"), Oop.getHeaderSize()); | |
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82 staticOopFieldCount = new CIntField(type.getCIntegerField("_static_oop_field_count"), Oop.getHeaderSize()); |
0 | 83 nonstaticOopMapSize = new CIntField(type.getCIntegerField("_nonstatic_oop_map_size"), Oop.getHeaderSize()); |
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84 isMarkedDependent = new CIntField(type.getCIntegerField("_is_marked_dependent"), Oop.getHeaderSize()); |
0 | 85 initState = new CIntField(type.getCIntegerField("_init_state"), Oop.getHeaderSize()); |
86 vtableLen = new CIntField(type.getCIntegerField("_vtable_len"), Oop.getHeaderSize()); | |
87 itableLen = new CIntField(type.getCIntegerField("_itable_len"), Oop.getHeaderSize()); | |
88 breakpoints = type.getAddressField("_breakpoints"); | |
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89 genericSignature = type.getAddressField("_generic_signature"); |
0 | 90 majorVersion = new CIntField(type.getCIntegerField("_major_version"), Oop.getHeaderSize()); |
91 minorVersion = new CIntField(type.getCIntegerField("_minor_version"), Oop.getHeaderSize()); | |
92 headerSize = alignObjectOffset(Oop.getHeaderSize() + type.getSize()); | |
93 | |
94 // read field offset constants | |
3938 | 95 ACCESS_FLAGS_OFFSET = db.lookupIntConstant("FieldInfo::access_flags_offset").intValue(); |
96 NAME_INDEX_OFFSET = db.lookupIntConstant("FieldInfo::name_index_offset").intValue(); | |
97 SIGNATURE_INDEX_OFFSET = db.lookupIntConstant("FieldInfo::signature_index_offset").intValue(); | |
98 INITVAL_INDEX_OFFSET = db.lookupIntConstant("FieldInfo::initval_index_offset").intValue(); | |
99 LOW_OFFSET = db.lookupIntConstant("FieldInfo::low_offset").intValue(); | |
100 HIGH_OFFSET = db.lookupIntConstant("FieldInfo::high_offset").intValue(); | |
101 FIELD_SLOTS = db.lookupIntConstant("FieldInfo::field_slots").intValue(); | |
0 | 102 // read ClassState constants |
103 CLASS_STATE_UNPARSABLE_BY_GC = db.lookupIntConstant("instanceKlass::unparsable_by_gc").intValue(); | |
104 CLASS_STATE_ALLOCATED = db.lookupIntConstant("instanceKlass::allocated").intValue(); | |
105 CLASS_STATE_LOADED = db.lookupIntConstant("instanceKlass::loaded").intValue(); | |
106 CLASS_STATE_LINKED = db.lookupIntConstant("instanceKlass::linked").intValue(); | |
107 CLASS_STATE_BEING_INITIALIZED = db.lookupIntConstant("instanceKlass::being_initialized").intValue(); | |
108 CLASS_STATE_FULLY_INITIALIZED = db.lookupIntConstant("instanceKlass::fully_initialized").intValue(); | |
109 CLASS_STATE_INITIALIZATION_ERROR = db.lookupIntConstant("instanceKlass::initialization_error").intValue(); | |
110 | |
111 } | |
112 | |
113 InstanceKlass(OopHandle handle, ObjectHeap heap) { | |
114 super(handle, heap); | |
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115 if (getJavaFieldsCount() != getAllFieldsCount()) { |
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116 // Exercise the injected field logic |
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117 for (int i = getJavaFieldsCount(); i < getAllFieldsCount(); i++) { |
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118 getFieldName(i); |
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119 getFieldSignature(i); |
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120 } |
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121 } |
0 | 122 } |
123 | |
124 private static OopField arrayKlasses; | |
125 private static OopField methods; | |
126 private static OopField methodOrdering; | |
127 private static OopField localInterfaces; | |
128 private static OopField transitiveInterfaces; | |
129 private static OopField fields; | |
3938 | 130 private static CIntField javaFieldsCount; |
0 | 131 private static OopField constants; |
132 private static OopField classLoader; | |
133 private static OopField protectionDomain; | |
134 private static OopField signers; | |
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135 private static AddressField sourceFileName; |
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136 private static AddressField sourceDebugExtension; |
0 | 137 private static OopField innerClasses; |
138 private static CIntField nonstaticFieldSize; | |
139 private static CIntField staticFieldSize; | |
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140 private static CIntField staticOopFieldCount; |
0 | 141 private static CIntField nonstaticOopMapSize; |
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142 private static CIntField isMarkedDependent; |
0 | 143 private static CIntField initState; |
144 private static CIntField vtableLen; | |
145 private static CIntField itableLen; | |
146 private static AddressField breakpoints; | |
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147 private static AddressField genericSignature; |
0 | 148 private static CIntField majorVersion; |
149 private static CIntField minorVersion; | |
150 | |
151 // type safe enum for ClassState from instanceKlass.hpp | |
152 public static class ClassState { | |
153 public static final ClassState UNPARSABLE_BY_GC = new ClassState("unparsable_by_gc"); | |
154 public static final ClassState ALLOCATED = new ClassState("allocated"); | |
155 public static final ClassState LOADED = new ClassState("loaded"); | |
156 public static final ClassState LINKED = new ClassState("linked"); | |
157 public static final ClassState BEING_INITIALIZED = new ClassState("beingInitialized"); | |
158 public static final ClassState FULLY_INITIALIZED = new ClassState("fullyInitialized"); | |
159 public static final ClassState INITIALIZATION_ERROR = new ClassState("initializationError"); | |
160 | |
161 private ClassState(String value) { | |
162 this.value = value; | |
163 } | |
164 | |
165 public String toString() { | |
166 return value; | |
167 } | |
168 | |
169 private String value; | |
170 } | |
171 | |
3939 | 172 public int getInitStateAsInt() { return (int) initState.getValue(this); } |
0 | 173 public ClassState getInitState() { |
174 int state = getInitStateAsInt(); | |
175 if (state == CLASS_STATE_UNPARSABLE_BY_GC) { | |
176 return ClassState.UNPARSABLE_BY_GC; | |
177 } else if (state == CLASS_STATE_ALLOCATED) { | |
178 return ClassState.ALLOCATED; | |
179 } else if (state == CLASS_STATE_LOADED) { | |
180 return ClassState.LOADED; | |
181 } else if (state == CLASS_STATE_LINKED) { | |
182 return ClassState.LINKED; | |
183 } else if (state == CLASS_STATE_BEING_INITIALIZED) { | |
184 return ClassState.BEING_INITIALIZED; | |
185 } else if (state == CLASS_STATE_FULLY_INITIALIZED) { | |
186 return ClassState.FULLY_INITIALIZED; | |
187 } else if (state == CLASS_STATE_INITIALIZATION_ERROR) { | |
188 return ClassState.INITIALIZATION_ERROR; | |
189 } else { | |
190 throw new RuntimeException("should not reach here"); | |
191 } | |
192 } | |
193 | |
194 // initialization state quaries | |
195 public boolean isLoaded() { | |
196 return getInitStateAsInt() >= CLASS_STATE_LOADED; | |
197 } | |
198 | |
199 public boolean isLinked() { | |
200 return getInitStateAsInt() >= CLASS_STATE_LINKED; | |
201 } | |
202 | |
203 public boolean isInitialized() { | |
204 return getInitStateAsInt() == CLASS_STATE_FULLY_INITIALIZED; | |
205 } | |
206 | |
207 public boolean isNotInitialized() { | |
208 return getInitStateAsInt() < CLASS_STATE_BEING_INITIALIZED; | |
209 } | |
210 | |
211 public boolean isBeingInitialized() { | |
212 return getInitStateAsInt() == CLASS_STATE_BEING_INITIALIZED; | |
213 } | |
214 | |
215 public boolean isInErrorState() { | |
216 return getInitStateAsInt() == CLASS_STATE_INITIALIZATION_ERROR; | |
217 } | |
218 | |
219 public int getClassStatus() { | |
220 int result = 0; | |
221 if (isLinked()) { | |
222 result |= JVMDIClassStatus.VERIFIED | JVMDIClassStatus.PREPARED; | |
223 } | |
224 | |
225 if (isInitialized()) { | |
226 if (Assert.ASSERTS_ENABLED) { | |
227 Assert.that(isLinked(), "Class status is not consistent"); | |
228 } | |
229 result |= JVMDIClassStatus.INITIALIZED; | |
230 } | |
231 | |
232 if (isInErrorState()) { | |
233 result |= JVMDIClassStatus.ERROR; | |
234 } | |
235 return result; | |
236 } | |
237 | |
238 // Byteside of the header | |
239 private static long headerSize; | |
240 | |
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241 public long getObjectSize(Oop object) { |
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242 return getSizeHelper() * VM.getVM().getAddressSize(); |
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243 } |
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244 |
0 | 245 public static long getHeaderSize() { return headerSize; } |
246 | |
3938 | 247 public short getFieldAccessFlags(int index) { |
248 return getFields().getShortAt(index * FIELD_SLOTS + ACCESS_FLAGS_OFFSET); | |
249 } | |
250 | |
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251 public short getFieldNameIndex(int index) { |
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252 if (index >= getJavaFieldsCount()) throw new IndexOutOfBoundsException("not a Java field;"); |
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253 return getFields().getShortAt(index * FIELD_SLOTS + NAME_INDEX_OFFSET); |
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254 } |
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255 |
3938 | 256 public Symbol getFieldName(int index) { |
257 int nameIndex = getFields().getShortAt(index * FIELD_SLOTS + NAME_INDEX_OFFSET); | |
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258 if (index < getJavaFieldsCount()) { |
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259 return getConstants().getSymbolAt(nameIndex); |
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260 } else { |
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261 return vmSymbols.symbolAt(nameIndex); |
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262 } |
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263 } |
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264 |
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265 public short getFieldSignatureIndex(int index) { |
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266 if (index >= getJavaFieldsCount()) throw new IndexOutOfBoundsException("not a Java field;"); |
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267 return getFields().getShortAt(index * FIELD_SLOTS + SIGNATURE_INDEX_OFFSET); |
3938 | 268 } |
269 | |
270 public Symbol getFieldSignature(int index) { | |
271 int signatureIndex = getFields().getShortAt(index * FIELD_SLOTS + SIGNATURE_INDEX_OFFSET); | |
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272 if (index < getJavaFieldsCount()) { |
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273 return getConstants().getSymbolAt(signatureIndex); |
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274 } else { |
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275 return vmSymbols.symbolAt(signatureIndex); |
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276 } |
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277 } |
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278 |
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279 public short getFieldGenericSignatureIndex(int index) { |
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280 int len = (int)getFields().getLength(); |
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281 int allFieldsCount = getAllFieldsCount(); |
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282 int generic_signature_slot = allFieldsCount * FIELD_SLOTS; |
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283 for (int i = 0; i < allFieldsCount; i++) { |
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284 short flags = getFieldAccessFlags(i); |
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285 AccessFlags access = new AccessFlags(flags); |
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286 if (i == index) { |
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287 if (access.fieldHasGenericSignature()) { |
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288 return getFields().getShortAt(generic_signature_slot); |
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289 } else { |
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290 return 0; |
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291 } |
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292 } else { |
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293 if (access.fieldHasGenericSignature()) { |
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294 generic_signature_slot ++; |
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295 } |
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296 } |
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297 } |
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298 return 0; |
3938 | 299 } |
300 | |
301 public Symbol getFieldGenericSignature(int index) { | |
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302 short genericSignatureIndex = getFieldGenericSignatureIndex(index); |
3938 | 303 if (genericSignatureIndex != 0) { |
304 return getConstants().getSymbolAt(genericSignatureIndex); | |
305 } | |
306 return null; | |
307 } | |
308 | |
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309 public short getFieldInitialValueIndex(int index) { |
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310 if (index >= getJavaFieldsCount()) throw new IndexOutOfBoundsException("not a Java field;"); |
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311 return getFields().getShortAt(index * FIELD_SLOTS + INITVAL_INDEX_OFFSET); |
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312 } |
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313 |
3938 | 314 public int getFieldOffset(int index) { |
315 TypeArray fields = getFields(); | |
316 return VM.getVM().buildIntFromShorts(fields.getShortAt(index * FIELD_SLOTS + LOW_OFFSET), | |
317 fields.getShortAt(index * FIELD_SLOTS + HIGH_OFFSET)); | |
318 } | |
319 | |
0 | 320 // Accessors for declared fields |
321 public Klass getArrayKlasses() { return (Klass) arrayKlasses.getValue(this); } | |
322 public ObjArray getMethods() { return (ObjArray) methods.getValue(this); } | |
323 public TypeArray getMethodOrdering() { return (TypeArray) methodOrdering.getValue(this); } | |
324 public ObjArray getLocalInterfaces() { return (ObjArray) localInterfaces.getValue(this); } | |
325 public ObjArray getTransitiveInterfaces() { return (ObjArray) transitiveInterfaces.getValue(this); } | |
326 public TypeArray getFields() { return (TypeArray) fields.getValue(this); } | |
3938 | 327 public int getJavaFieldsCount() { return (int) javaFieldsCount.getValue(this); } |
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328 public int getAllFieldsCount() { |
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329 int len = (int)getFields().getLength(); |
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330 int allFieldsCount = 0; |
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331 for (; allFieldsCount*FIELD_SLOTS < len; allFieldsCount++) { |
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332 short flags = getFieldAccessFlags(allFieldsCount); |
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333 AccessFlags access = new AccessFlags(flags); |
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334 if (access.fieldHasGenericSignature()) { |
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335 len --; |
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336 } |
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337 } |
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338 return allFieldsCount; |
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339 } |
0 | 340 public ConstantPool getConstants() { return (ConstantPool) constants.getValue(this); } |
341 public Oop getClassLoader() { return classLoader.getValue(this); } | |
342 public Oop getProtectionDomain() { return protectionDomain.getValue(this); } | |
343 public ObjArray getSigners() { return (ObjArray) signers.getValue(this); } | |
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344 public Symbol getSourceFileName() { return getSymbol(sourceFileName); } |
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345 public Symbol getSourceDebugExtension(){ return getSymbol(sourceDebugExtension); } |
0 | 346 public TypeArray getInnerClasses() { return (TypeArray) innerClasses.getValue(this); } |
347 public long getNonstaticFieldSize() { return nonstaticFieldSize.getValue(this); } | |
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348 public long getStaticOopFieldCount() { return staticOopFieldCount.getValue(this); } |
0 | 349 public long getNonstaticOopMapSize() { return nonstaticOopMapSize.getValue(this); } |
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350 public boolean getIsMarkedDependent() { return isMarkedDependent.getValue(this) != 0; } |
0 | 351 public long getVtableLen() { return vtableLen.getValue(this); } |
352 public long getItableLen() { return itableLen.getValue(this); } | |
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353 public Symbol getGenericSignature() { return getSymbol(genericSignature); } |
0 | 354 public long majorVersion() { return majorVersion.getValue(this); } |
355 public long minorVersion() { return minorVersion.getValue(this); } | |
356 | |
357 // "size helper" == instance size in words | |
358 public long getSizeHelper() { | |
359 int lh = getLayoutHelper(); | |
360 if (Assert.ASSERTS_ENABLED) { | |
361 Assert.that(lh > 0, "layout helper initialized for instance class"); | |
362 } | |
363 return lh / VM.getVM().getAddressSize(); | |
364 } | |
365 | |
366 // same as enum InnerClassAttributeOffset in VM code. | |
367 public static interface InnerClassAttributeOffset { | |
368 // from JVM spec. "InnerClasses" attribute | |
369 public static final int innerClassInnerClassInfoOffset = 0; | |
370 public static final int innerClassOuterClassInfoOffset = 1; | |
371 public static final int innerClassInnerNameOffset = 2; | |
372 public static final int innerClassAccessFlagsOffset = 3; | |
373 public static final int innerClassNextOffset = 4; | |
374 }; | |
375 | |
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376 public static interface EnclosingMethodAttributeOffset { |
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377 public static final int enclosing_method_class_index_offset = 0; |
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378 public static final int enclosing_method_method_index_offset = 1; |
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379 public static final int enclosing_method_attribute_size = 2; |
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380 }; |
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381 |
0 | 382 // refer to compute_modifier_flags in VM code. |
383 public long computeModifierFlags() { | |
384 long access = getAccessFlags(); | |
385 // But check if it happens to be member class. | |
386 TypeArray innerClassList = getInnerClasses(); | |
387 int length = ( innerClassList == null)? 0 : (int) innerClassList.getLength(); | |
388 if (length > 0) { | |
389 if (Assert.ASSERTS_ENABLED) { | |
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390 Assert.that(length % InnerClassAttributeOffset.innerClassNextOffset == 0 || |
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391 length % InnerClassAttributeOffset.innerClassNextOffset == EnclosingMethodAttributeOffset.enclosing_method_attribute_size, |
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392 "just checking"); |
0 | 393 } |
394 for (int i = 0; i < length; i += InnerClassAttributeOffset.innerClassNextOffset) { | |
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395 if (i == length - EnclosingMethodAttributeOffset.enclosing_method_attribute_size) { |
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396 break; |
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397 } |
0 | 398 int ioff = innerClassList.getShortAt(i + |
399 InnerClassAttributeOffset.innerClassInnerClassInfoOffset); | |
400 // 'ioff' can be zero. | |
401 // refer to JVM spec. section 4.7.5. | |
402 if (ioff != 0) { | |
403 // only look at classes that are already loaded | |
404 // since we are looking for the flags for our self. | |
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405 ConstantPool.CPSlot classInfo = getConstants().getSlotAt(ioff); |
0 | 406 Symbol name = null; |
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407 if (classInfo.isOop()) { |
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408 name = ((Klass) classInfo.getOop()).getName(); |
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409 } else if (classInfo.isMetaData()) { |
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410 name = classInfo.getSymbol(); |
0 | 411 } else { |
412 throw new RuntimeException("should not reach here"); | |
413 } | |
414 | |
415 if (name.equals(getName())) { | |
416 // This is really a member class | |
417 access = innerClassList.getShortAt(i + | |
418 InnerClassAttributeOffset.innerClassAccessFlagsOffset); | |
419 break; | |
420 } | |
421 } | |
422 } // for inner classes | |
423 } | |
424 | |
425 // Remember to strip ACC_SUPER bit | |
426 return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS; | |
427 } | |
428 | |
429 | |
430 // whether given Symbol is name of an inner/nested Klass of this Klass? | |
431 // anonymous and local classes are excluded. | |
432 public boolean isInnerClassName(Symbol sym) { | |
433 return isInInnerClasses(sym, false); | |
434 } | |
435 | |
436 // whether given Symbol is name of an inner/nested Klass of this Klass? | |
437 // anonymous classes excluded, but local classes are included. | |
438 public boolean isInnerOrLocalClassName(Symbol sym) { | |
439 return isInInnerClasses(sym, true); | |
440 } | |
441 | |
442 private boolean isInInnerClasses(Symbol sym, boolean includeLocals) { | |
443 TypeArray innerClassList = getInnerClasses(); | |
444 int length = ( innerClassList == null)? 0 : (int) innerClassList.getLength(); | |
445 if (length > 0) { | |
446 if (Assert.ASSERTS_ENABLED) { | |
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447 Assert.that(length % InnerClassAttributeOffset.innerClassNextOffset == 0 || |
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448 length % InnerClassAttributeOffset.innerClassNextOffset == EnclosingMethodAttributeOffset.enclosing_method_attribute_size, |
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449 "just checking"); |
0 | 450 } |
451 for (int i = 0; i < length; i += InnerClassAttributeOffset.innerClassNextOffset) { | |
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452 if (i == length - EnclosingMethodAttributeOffset.enclosing_method_attribute_size) { |
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453 break; |
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454 } |
0 | 455 int ioff = innerClassList.getShortAt(i + |
456 InnerClassAttributeOffset.innerClassInnerClassInfoOffset); | |
457 // 'ioff' can be zero. | |
458 // refer to JVM spec. section 4.7.5. | |
459 if (ioff != 0) { | |
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460 ConstantPool.CPSlot iclassInfo = getConstants().getSlotAt(ioff); |
0 | 461 Symbol innerName = null; |
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462 if (iclassInfo.isOop()) { |
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463 innerName = ((Klass) iclassInfo.getOop()).getName(); |
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464 } else if (iclassInfo.isMetaData()) { |
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465 innerName = iclassInfo.getSymbol(); |
0 | 466 } else { |
467 throw new RuntimeException("should not reach here"); | |
468 } | |
469 | |
470 Symbol myname = getName(); | |
471 int ooff = innerClassList.getShortAt(i + | |
472 InnerClassAttributeOffset.innerClassOuterClassInfoOffset); | |
473 // for anonymous classes inner_name_index of InnerClasses | |
474 // attribute is zero. | |
475 int innerNameIndex = innerClassList.getShortAt(i + | |
476 InnerClassAttributeOffset.innerClassInnerNameOffset); | |
477 // if this is not a member (anonymous, local etc.), 'ooff' will be zero | |
478 // refer to JVM spec. section 4.7.5. | |
479 if (ooff == 0) { | |
480 if (includeLocals) { | |
481 // does it looks like my local class? | |
482 if (innerName.equals(sym) && | |
483 innerName.asString().startsWith(myname.asString())) { | |
484 // exclude anonymous classes. | |
485 return (innerNameIndex != 0); | |
486 } | |
487 } | |
488 } else { | |
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489 ConstantPool.CPSlot oclassInfo = getConstants().getSlotAt(ooff); |
0 | 490 Symbol outerName = null; |
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491 if (oclassInfo.isOop()) { |
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492 outerName = ((Klass) oclassInfo.getOop()).getName(); |
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493 } else if (oclassInfo.isMetaData()) { |
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494 outerName = oclassInfo.getSymbol(); |
0 | 495 } else { |
496 throw new RuntimeException("should not reach here"); | |
497 } | |
498 | |
499 // include only if current class is outer class. | |
500 if (outerName.equals(myname) && innerName.equals(sym)) { | |
501 return true; | |
502 } | |
503 } | |
504 } | |
505 } // for inner classes | |
506 return false; | |
507 } else { | |
508 return false; | |
509 } | |
510 } | |
511 | |
512 public boolean implementsInterface(Klass k) { | |
513 if (Assert.ASSERTS_ENABLED) { | |
514 Assert.that(k.isInterface(), "should not reach here"); | |
515 } | |
516 ObjArray interfaces = getTransitiveInterfaces(); | |
517 final int len = (int) interfaces.getLength(); | |
518 for (int i = 0; i < len; i++) { | |
519 if (interfaces.getObjAt(i).equals(k)) return true; | |
520 } | |
521 return false; | |
522 } | |
523 | |
524 boolean computeSubtypeOf(Klass k) { | |
525 if (k.isInterface()) { | |
526 return implementsInterface(k); | |
527 } else { | |
528 return super.computeSubtypeOf(k); | |
529 } | |
530 } | |
531 | |
532 public void printValueOn(PrintStream tty) { | |
533 tty.print("InstanceKlass for " + getName().asString()); | |
534 } | |
535 | |
536 public void iterateFields(OopVisitor visitor, boolean doVMFields) { | |
537 super.iterateFields(visitor, doVMFields); | |
538 if (doVMFields) { | |
539 visitor.doOop(arrayKlasses, true); | |
540 visitor.doOop(methods, true); | |
541 visitor.doOop(methodOrdering, true); | |
542 visitor.doOop(localInterfaces, true); | |
543 visitor.doOop(transitiveInterfaces, true); | |
544 visitor.doOop(fields, true); | |
545 visitor.doOop(constants, true); | |
546 visitor.doOop(classLoader, true); | |
547 visitor.doOop(protectionDomain, true); | |
548 visitor.doOop(signers, true); | |
549 visitor.doOop(innerClasses, true); | |
550 visitor.doCInt(nonstaticFieldSize, true); | |
551 visitor.doCInt(staticFieldSize, true); | |
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552 visitor.doCInt(staticOopFieldCount, true); |
0 | 553 visitor.doCInt(nonstaticOopMapSize, true); |
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554 visitor.doCInt(isMarkedDependent, true); |
0 | 555 visitor.doCInt(initState, true); |
556 visitor.doCInt(vtableLen, true); | |
557 visitor.doCInt(itableLen, true); | |
558 } | |
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559 } |
0 | 560 |
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561 /* |
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562 * Visit the static fields of this InstanceKlass with the obj of |
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563 * the visitor set to the oop holding the fields, which is |
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564 * currently the java mirror. |
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565 */ |
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566 public void iterateStaticFields(OopVisitor visitor) { |
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567 visitor.setObj(getJavaMirror()); |
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568 visitor.prologue(); |
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569 iterateStaticFieldsInternal(visitor); |
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570 visitor.epilogue(); |
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571 |
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572 } |
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573 |
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574 void iterateStaticFieldsInternal(OopVisitor visitor) { |
3938 | 575 int length = getJavaFieldsCount(); |
3944 | 576 for (int index = 0; index < length; index++) { |
577 short accessFlags = getFieldAccessFlags(index); | |
578 FieldType type = new FieldType(getFieldSignature(index)); | |
0 | 579 AccessFlags access = new AccessFlags(accessFlags); |
580 if (access.isStatic()) { | |
581 visitField(visitor, type, index); | |
582 } | |
583 } | |
584 } | |
585 | |
586 public Klass getJavaSuper() { | |
587 return getSuper(); | |
588 } | |
589 | |
3939 | 590 public static class StaticField { |
591 public AccessFlags flags; | |
592 public Field field; | |
593 | |
594 StaticField(Field field, AccessFlags flags) { | |
595 this.field = field; | |
596 this.flags = flags; | |
597 } | |
598 } | |
599 | |
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600 public void iterateNonStaticFields(OopVisitor visitor, Oop obj) { |
0 | 601 if (getSuper() != null) { |
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602 ((InstanceKlass) getSuper()).iterateNonStaticFields(visitor, obj); |
0 | 603 } |
3938 | 604 int length = getJavaFieldsCount(); |
3944 | 605 for (int index = 0; index < length; index++) { |
606 short accessFlags = getFieldAccessFlags(index); | |
607 FieldType type = new FieldType(getFieldSignature(index)); | |
0 | 608 AccessFlags access = new AccessFlags(accessFlags); |
609 if (!access.isStatic()) { | |
610 visitField(visitor, type, index); | |
611 } | |
612 } | |
613 } | |
614 | |
615 /** Field access by name. */ | |
616 public Field findLocalField(Symbol name, Symbol sig) { | |
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617 int length = getJavaFieldsCount(); |
3944 | 618 for (int i = 0; i < length; i++) { |
619 Symbol f_name = getFieldName(i); | |
620 Symbol f_sig = getFieldSignature(i); | |
0 | 621 if (name.equals(f_name) && sig.equals(f_sig)) { |
622 return newField(i); | |
623 } | |
624 } | |
625 | |
626 return null; | |
627 } | |
628 | |
629 /** Find field in direct superinterfaces. */ | |
630 public Field findInterfaceField(Symbol name, Symbol sig) { | |
631 ObjArray interfaces = getLocalInterfaces(); | |
632 int n = (int) interfaces.getLength(); | |
633 for (int i = 0; i < n; i++) { | |
634 InstanceKlass intf1 = (InstanceKlass) interfaces.getObjAt(i); | |
635 if (Assert.ASSERTS_ENABLED) { | |
636 Assert.that(intf1.isInterface(), "just checking type"); | |
637 } | |
638 // search for field in current interface | |
639 Field f = intf1.findLocalField(name, sig); | |
640 if (f != null) { | |
641 if (Assert.ASSERTS_ENABLED) { | |
642 Assert.that(f.getAccessFlagsObj().isStatic(), "interface field must be static"); | |
643 } | |
644 return f; | |
645 } | |
646 // search for field in direct superinterfaces | |
647 f = intf1.findInterfaceField(name, sig); | |
648 if (f != null) return f; | |
649 } | |
650 // otherwise field lookup fails | |
651 return null; | |
652 } | |
653 | |
654 /** Find field according to JVM spec 5.4.3.2, returns the klass in | |
655 which the field is defined. */ | |
656 public Field findField(Symbol name, Symbol sig) { | |
657 // search order according to newest JVM spec (5.4.3.2, p.167). | |
658 // 1) search for field in current klass | |
659 Field f = findLocalField(name, sig); | |
660 if (f != null) return f; | |
661 | |
662 // 2) search for field recursively in direct superinterfaces | |
663 f = findInterfaceField(name, sig); | |
664 if (f != null) return f; | |
665 | |
666 // 3) apply field lookup recursively if superclass exists | |
667 InstanceKlass supr = (InstanceKlass) getSuper(); | |
668 if (supr != null) return supr.findField(name, sig); | |
669 | |
670 // 4) otherwise field lookup fails | |
671 return null; | |
672 } | |
673 | |
674 /** Find field according to JVM spec 5.4.3.2, returns the klass in | |
675 which the field is defined (convenience routine) */ | |
676 public Field findField(String name, String sig) { | |
677 SymbolTable symbols = VM.getVM().getSymbolTable(); | |
678 Symbol nameSym = symbols.probe(name); | |
679 Symbol sigSym = symbols.probe(sig); | |
680 if (nameSym == null || sigSym == null) { | |
681 return null; | |
682 } | |
683 return findField(nameSym, sigSym); | |
684 } | |
685 | |
686 /** Find field according to JVM spec 5.4.3.2, returns the klass in | |
687 which the field is defined (retained only for backward | |
688 compatibility with jdbx) */ | |
689 public Field findFieldDbg(String name, String sig) { | |
690 return findField(name, sig); | |
691 } | |
692 | |
693 /** Get field by its index in the fields array. Only designed for | |
694 use in a debugging system. */ | |
3944 | 695 public Field getFieldByIndex(int fieldIndex) { |
696 return newField(fieldIndex); | |
0 | 697 } |
698 | |
699 | |
700 /** Return a List of SA Fields for the fields declared in this class. | |
701 Inherited fields are not included. | |
702 Return an empty list if there are no fields declared in this class. | |
703 Only designed for use in a debugging system. */ | |
704 public List getImmediateFields() { | |
705 // A list of Fields for each field declared in this class/interface, | |
706 // not including inherited fields. | |
3938 | 707 int length = getJavaFieldsCount(); |
708 List immediateFields = new ArrayList(length); | |
3944 | 709 for (int index = 0; index < length; index++) { |
0 | 710 immediateFields.add(getFieldByIndex(index)); |
711 } | |
712 | |
713 return immediateFields; | |
714 } | |
715 | |
716 /** Return a List of SA Fields for all the java fields in this class, | |
717 including all inherited fields. This includes hidden | |
718 fields. Thus the returned list can contain fields with | |
719 the same name. | |
720 Return an empty list if there are no fields. | |
721 Only designed for use in a debugging system. */ | |
722 public List getAllFields() { | |
723 // Contains a Field for each field in this class, including immediate | |
724 // fields and inherited fields. | |
725 List allFields = getImmediateFields(); | |
726 | |
727 // transitiveInterfaces contains all interfaces implemented | |
728 // by this class and its superclass chain with no duplicates. | |
729 | |
730 ObjArray interfaces = getTransitiveInterfaces(); | |
731 int n = (int) interfaces.getLength(); | |
732 for (int i = 0; i < n; i++) { | |
733 InstanceKlass intf1 = (InstanceKlass) interfaces.getObjAt(i); | |
734 if (Assert.ASSERTS_ENABLED) { | |
735 Assert.that(intf1.isInterface(), "just checking type"); | |
736 } | |
737 allFields.addAll(intf1.getImmediateFields()); | |
738 } | |
739 | |
740 // Get all fields in the superclass, recursively. But, don't | |
741 // include fields in interfaces implemented by superclasses; | |
742 // we already have all those. | |
743 if (!isInterface()) { | |
744 InstanceKlass supr; | |
745 if ( (supr = (InstanceKlass) getSuper()) != null) { | |
746 allFields.addAll(supr.getImmediateFields()); | |
747 } | |
748 } | |
749 | |
750 return allFields; | |
751 } | |
752 | |
753 | |
754 /** Return a List of SA Methods declared directly in this class/interface. | |
755 Return an empty list if there are none, or if this isn't a class/ | |
756 interface. | |
757 */ | |
758 public List getImmediateMethods() { | |
759 // Contains a Method for each method declared in this class/interface | |
760 // not including inherited methods. | |
761 | |
762 ObjArray methods = getMethods(); | |
763 int length = (int)methods.getLength(); | |
764 Object[] tmp = new Object[length]; | |
765 | |
766 TypeArray methodOrdering = getMethodOrdering(); | |
767 if (methodOrdering.getLength() != length) { | |
768 // no ordering info present | |
769 for (int index = 0; index < length; index++) { | |
770 tmp[index] = methods.getObjAt(index); | |
771 } | |
772 } else { | |
773 for (int index = 0; index < length; index++) { | |
774 int originalIndex = getMethodOrdering().getIntAt(index); | |
775 tmp[originalIndex] = methods.getObjAt(index); | |
776 } | |
777 } | |
778 | |
779 return Arrays.asList(tmp); | |
780 } | |
781 | |
782 /** Return a List containing an SA InstanceKlass for each | |
783 interface named in this class's 'implements' clause. | |
784 */ | |
785 public List getDirectImplementedInterfaces() { | |
786 // Contains an InstanceKlass for each interface in this classes | |
787 // 'implements' clause. | |
788 | |
789 ObjArray interfaces = getLocalInterfaces(); | |
790 int length = (int) interfaces.getLength(); | |
791 List directImplementedInterfaces = new ArrayList(length); | |
792 | |
793 for (int index = 0; index < length; index ++) { | |
794 directImplementedInterfaces.add(interfaces.getObjAt(index)); | |
795 } | |
796 | |
797 return directImplementedInterfaces; | |
798 } | |
799 | |
800 | |
801 public long getObjectSize() { | |
802 long bodySize = alignObjectOffset(getVtableLen() * getHeap().getOopSize()) | |
803 + alignObjectOffset(getItableLen() * getHeap().getOopSize()) | |
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804 + (getNonstaticOopMapSize()) * getHeap().getOopSize(); |
0 | 805 return alignObjectSize(headerSize + bodySize); |
806 } | |
807 | |
808 public Klass arrayKlassImpl(boolean orNull, int n) { | |
809 // FIXME: in reflective system this would need to change to | |
810 // actually allocate | |
811 if (getArrayKlasses() == null) { return null; } | |
812 ObjArrayKlass oak = (ObjArrayKlass) getArrayKlasses(); | |
813 if (orNull) { | |
814 return oak.arrayKlassOrNull(n); | |
815 } | |
816 return oak.arrayKlass(n); | |
817 } | |
818 | |
819 public Klass arrayKlassImpl(boolean orNull) { | |
820 return arrayKlassImpl(orNull, 1); | |
821 } | |
822 | |
823 public String signature() { | |
824 return "L" + super.signature() + ";"; | |
825 } | |
826 | |
827 /** Convenience routine taking Strings; lookup is done in | |
828 SymbolTable. */ | |
829 public Method findMethod(String name, String sig) { | |
830 SymbolTable syms = VM.getVM().getSymbolTable(); | |
831 Symbol nameSym = syms.probe(name); | |
832 Symbol sigSym = syms.probe(sig); | |
833 if (nameSym == null || sigSym == null) { | |
834 return null; | |
835 } | |
836 return findMethod(nameSym, sigSym); | |
837 } | |
838 | |
839 /** Find method in vtable. */ | |
840 public Method findMethod(Symbol name, Symbol sig) { | |
841 return findMethod(getMethods(), name, sig); | |
842 } | |
843 | |
844 /** Breakpoint support (see methods on methodOop for details) */ | |
845 public BreakpointInfo getBreakpoints() { | |
846 Address addr = getHandle().getAddressAt(Oop.getHeaderSize() + breakpoints.getOffset()); | |
847 return (BreakpointInfo) VMObjectFactory.newObject(BreakpointInfo.class, addr); | |
848 } | |
849 | |
850 //---------------------------------------------------------------------- | |
851 // Internals only below this point | |
852 // | |
853 | |
854 private void visitField(OopVisitor visitor, FieldType type, int index) { | |
855 Field f = newField(index); | |
856 if (type.isOop()) { | |
857 visitor.doOop((OopField) f, false); | |
858 return; | |
859 } | |
860 if (type.isByte()) { | |
861 visitor.doByte((ByteField) f, false); | |
862 return; | |
863 } | |
864 if (type.isChar()) { | |
865 visitor.doChar((CharField) f, false); | |
866 return; | |
867 } | |
868 if (type.isDouble()) { | |
869 visitor.doDouble((DoubleField) f, false); | |
870 return; | |
871 } | |
872 if (type.isFloat()) { | |
873 visitor.doFloat((FloatField) f, false); | |
874 return; | |
875 } | |
876 if (type.isInt()) { | |
877 visitor.doInt((IntField) f, false); | |
878 return; | |
879 } | |
880 if (type.isLong()) { | |
881 visitor.doLong((LongField) f, false); | |
882 return; | |
883 } | |
884 if (type.isShort()) { | |
885 visitor.doShort((ShortField) f, false); | |
886 return; | |
887 } | |
888 if (type.isBoolean()) { | |
889 visitor.doBoolean((BooleanField) f, false); | |
890 return; | |
891 } | |
892 } | |
893 | |
894 // Creates new field from index in fields TypeArray | |
895 private Field newField(int index) { | |
3944 | 896 FieldType type = new FieldType(getFieldSignature(index)); |
0 | 897 if (type.isOop()) { |
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898 if (VM.getVM().isCompressedOopsEnabled()) { |
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899 return new NarrowOopField(this, index); |
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900 } else { |
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901 return new OopField(this, index); |
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902 } |
0 | 903 } |
904 if (type.isByte()) { | |
905 return new ByteField(this, index); | |
906 } | |
907 if (type.isChar()) { | |
908 return new CharField(this, index); | |
909 } | |
910 if (type.isDouble()) { | |
911 return new DoubleField(this, index); | |
912 } | |
913 if (type.isFloat()) { | |
914 return new FloatField(this, index); | |
915 } | |
916 if (type.isInt()) { | |
917 return new IntField(this, index); | |
918 } | |
919 if (type.isLong()) { | |
920 return new LongField(this, index); | |
921 } | |
922 if (type.isShort()) { | |
923 return new ShortField(this, index); | |
924 } | |
925 if (type.isBoolean()) { | |
926 return new BooleanField(this, index); | |
927 } | |
928 throw new RuntimeException("Illegal field type at index " + index); | |
929 } | |
930 | |
931 private static Method findMethod(ObjArray methods, Symbol name, Symbol signature) { | |
932 int len = (int) methods.getLength(); | |
933 // methods are sorted, so do binary search | |
934 int l = 0; | |
935 int h = len - 1; | |
936 while (l <= h) { | |
937 int mid = (l + h) >> 1; | |
938 Method m = (Method) methods.getObjAt(mid); | |
939 int res = m.getName().fastCompare(name); | |
940 if (res == 0) { | |
941 // found matching name; do linear search to find matching signature | |
942 // first, quick check for common case | |
943 if (m.getSignature().equals(signature)) return m; | |
944 // search downwards through overloaded methods | |
945 int i; | |
946 for (i = mid - 1; i >= l; i--) { | |
947 Method m1 = (Method) methods.getObjAt(i); | |
948 if (!m1.getName().equals(name)) break; | |
949 if (m1.getSignature().equals(signature)) return m1; | |
950 } | |
951 // search upwards | |
952 for (i = mid + 1; i <= h; i++) { | |
953 Method m1 = (Method) methods.getObjAt(i); | |
954 if (!m1.getName().equals(name)) break; | |
955 if (m1.getSignature().equals(signature)) return m1; | |
956 } | |
957 // not found | |
958 if (Assert.ASSERTS_ENABLED) { | |
959 int index = linearSearch(methods, name, signature); | |
960 if (index != -1) { | |
961 throw new DebuggerException("binary search bug: should have found entry " + index); | |
962 } | |
963 } | |
964 return null; | |
965 } else if (res < 0) { | |
966 l = mid + 1; | |
967 } else { | |
968 h = mid - 1; | |
969 } | |
970 } | |
971 if (Assert.ASSERTS_ENABLED) { | |
972 int index = linearSearch(methods, name, signature); | |
973 if (index != -1) { | |
974 throw new DebuggerException("binary search bug: should have found entry " + index); | |
975 } | |
976 } | |
977 return null; | |
978 } | |
979 | |
980 private static int linearSearch(ObjArray methods, Symbol name, Symbol signature) { | |
981 int len = (int) methods.getLength(); | |
982 for (int index = 0; index < len; index++) { | |
983 Method m = (Method) methods.getObjAt(index); | |
984 if (m.getSignature().equals(signature) && m.getName().equals(name)) { | |
985 return index; | |
986 } | |
987 } | |
988 return -1; | |
989 } | |
990 } |