Mercurial > hg > truffle
annotate src/share/vm/oops/instanceKlass.hpp @ 974:26b774d693aa
Merge
| author | acorn |
|---|---|
| date | Wed, 16 Sep 2009 09:10:57 -0400 |
| parents | ad6585fd4087 9eebd3ac74cf |
| children | 83c29a26f67c |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
431
diff
changeset
|
2 * Copyright 1997-2009 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 // An instanceKlass is the VM level representation of a Java class. | |
| 26 // It contains all information needed for at class at execution runtime. | |
| 27 | |
| 28 // instanceKlass layout: | |
| 29 // [header ] klassOop | |
| 30 // [klass pointer ] klassOop | |
| 31 // [C++ vtbl pointer ] Klass | |
| 32 // [subtype cache ] Klass | |
| 33 // [instance size ] Klass | |
| 34 // [java mirror ] Klass | |
| 35 // [super ] Klass | |
| 36 // [access_flags ] Klass | |
| 37 // [name ] Klass | |
| 38 // [first subklass ] Klass | |
| 39 // [next sibling ] Klass | |
| 40 // [array klasses ] | |
| 41 // [methods ] | |
| 42 // [local interfaces ] | |
| 43 // [transitive interfaces ] | |
| 44 // [number of implementors ] | |
| 45 // [implementors ] klassOop[2] | |
| 46 // [fields ] | |
| 47 // [constants ] | |
| 48 // [class loader ] | |
| 49 // [protection domain ] | |
| 50 // [signers ] | |
| 51 // [source file name ] | |
| 52 // [inner classes ] | |
| 53 // [static field size ] | |
| 54 // [nonstatic field size ] | |
| 55 // [static oop fields size ] | |
| 56 // [nonstatic oop maps size ] | |
| 57 // [has finalize method ] | |
| 58 // [deoptimization mark bit ] | |
| 59 // [initialization state ] | |
| 60 // [initializing thread ] | |
| 61 // [Java vtable length ] | |
| 62 // [oop map cache (stack maps) ] | |
| 63 // [EMBEDDED Java vtable ] size in words = vtable_len | |
| 64 // [EMBEDDED static oop fields ] size in words = static_oop_fields_size | |
| 65 // [ static non-oop fields ] size in words = static_field_size - static_oop_fields_size | |
| 66 // [EMBEDDED nonstatic oop-map blocks] size in words = nonstatic_oop_map_size | |
| 67 // | |
| 68 // The embedded nonstatic oop-map blocks are short pairs (offset, length) indicating | |
| 69 // where oops are located in instances of this klass. | |
| 70 | |
| 71 | |
| 72 // forward declaration for class -- see below for definition | |
| 73 class SuperTypeClosure; | |
| 74 class JNIid; | |
| 75 class jniIdMapBase; | |
| 76 class BreakpointInfo; | |
| 77 class fieldDescriptor; | |
| 78 class DepChange; | |
| 79 class nmethodBucket; | |
| 80 class PreviousVersionNode; | |
| 81 class JvmtiCachedClassFieldMap; | |
| 82 | |
| 83 // This is used in iterators below. | |
| 84 class FieldClosure: public StackObj { | |
| 85 public: | |
| 86 virtual void do_field(fieldDescriptor* fd) = 0; | |
| 87 }; | |
| 88 | |
| 89 #ifndef PRODUCT | |
| 90 // Print fields. | |
| 91 // If "obj" argument to constructor is NULL, prints static fields, otherwise prints non-static fields. | |
| 92 class FieldPrinter: public FieldClosure { | |
| 93 oop _obj; | |
| 94 outputStream* _st; | |
| 95 public: | |
| 96 FieldPrinter(outputStream* st, oop obj = NULL) : _obj(obj), _st(st) {} | |
| 97 void do_field(fieldDescriptor* fd); | |
| 98 }; | |
| 99 #endif // !PRODUCT | |
| 100 | |
| 938 | 101 // ValueObjs embedded in klass. Describes where oops are located in instances of |
| 102 // this klass. | |
| 103 class OopMapBlock VALUE_OBJ_CLASS_SPEC { | |
| 104 public: | |
| 105 // Byte offset of the first oop mapped by this block. | |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
106 int offset() const { return _offset; } |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
107 void set_offset(int offset) { _offset = offset; } |
| 938 | 108 |
| 109 // Number of oops in this block. | |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
110 uint count() const { return _count; } |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
111 void set_count(uint count) { _count = count; } |
| 938 | 112 |
| 113 // sizeof(OopMapBlock) in HeapWords. | |
| 114 static const int size_in_words() { | |
| 115 return align_size_up(int(sizeof(OopMapBlock)), HeapWordSize) >> | |
| 116 LogHeapWordSize; | |
| 117 } | |
| 118 | |
| 119 private: | |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
120 int _offset; |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
121 uint _count; |
| 938 | 122 }; |
| 123 | |
| 0 | 124 class instanceKlass: public Klass { |
| 125 friend class VMStructs; | |
| 126 public: | |
| 127 // See "The Java Virtual Machine Specification" section 2.16.2-5 for a detailed description | |
| 128 // of the class loading & initialization procedure, and the use of the states. | |
| 129 enum ClassState { | |
| 130 unparsable_by_gc = 0, // object is not yet parsable by gc. Value of _init_state at object allocation. | |
| 131 allocated, // allocated (but not yet linked) | |
| 132 loaded, // loaded and inserted in class hierarchy (but not linked yet) | |
| 133 linked, // successfully linked/verified (but not initialized yet) | |
| 134 being_initialized, // currently running class initializer | |
| 135 fully_initialized, // initialized (successfull final state) | |
| 136 initialization_error // error happened during initialization | |
| 137 }; | |
| 138 | |
|
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
139 // smaller footprint for boolean flags |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
140 enum ClassFlags { |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
141 _noflags = 0, // initial value |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
142 _rewritten = 0x00000001U, // rewritten |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
143 _should_verify = 0x00000002U, // defineClass specified conditional verification |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
144 _has_nonstatic_fields = 0x00000004U, // for sizing with UseCompressedOops |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
145 _is_marked_dependent = 0x00000008U // used for marking during flushing and deoptimization |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
146 }; |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
147 |
| 0 | 148 public: |
| 149 oop* oop_block_beg() const { return adr_array_klasses(); } | |
| 150 oop* oop_block_end() const { return adr_methods_default_annotations() + 1; } | |
| 151 | |
| 152 enum { | |
| 153 implementors_limit = 2 // how many implems can we track? | |
| 154 }; | |
| 155 | |
| 156 protected: | |
| 157 // | |
| 158 // The oop block. See comment in klass.hpp before making changes. | |
| 159 // | |
| 160 | |
| 161 // Array classes holding elements of this class. | |
| 162 klassOop _array_klasses; | |
| 163 // Method array. | |
| 164 objArrayOop _methods; | |
| 165 // Int array containing the original order of method in the class file (for | |
| 166 // JVMTI). | |
| 167 typeArrayOop _method_ordering; | |
| 168 // Interface (klassOops) this class declares locally to implement. | |
| 169 objArrayOop _local_interfaces; | |
| 170 // Interface (klassOops) this class implements transitively. | |
| 171 objArrayOop _transitive_interfaces; | |
| 172 // Instance and static variable information, 5-tuples of shorts [access, name | |
| 173 // index, sig index, initval index, offset]. | |
| 174 typeArrayOop _fields; | |
| 175 // Constant pool for this class. | |
| 176 constantPoolOop _constants; | |
| 177 // Class loader used to load this class, NULL if VM loader used. | |
| 178 oop _class_loader; | |
| 179 // Protection domain. | |
| 180 oop _protection_domain; | |
|
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
356
diff
changeset
|
181 // Host class, which grants its access privileges to this class also. |
|
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
356
diff
changeset
|
182 // This is only non-null for an anonymous class (AnonymousClasses enabled). |
|
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
356
diff
changeset
|
183 // The host class is either named, or a previously loaded anonymous class. |
|
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
356
diff
changeset
|
184 klassOop _host_klass; |
| 0 | 185 // Class signers. |
| 186 objArrayOop _signers; | |
| 187 // Name of source file containing this klass, NULL if not specified. | |
| 188 symbolOop _source_file_name; | |
| 189 // the source debug extension for this klass, NULL if not specified. | |
| 190 symbolOop _source_debug_extension; | |
| 191 // inner_classes attribute. | |
| 192 typeArrayOop _inner_classes; | |
| 193 // Implementors of this interface (not valid if it overflows) | |
| 194 klassOop _implementors[implementors_limit]; | |
| 195 // Generic signature, or null if none. | |
| 196 symbolOop _generic_signature; | |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
676
diff
changeset
|
197 // invokedynamic bootstrap method (a java.dyn.MethodHandle) |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
676
diff
changeset
|
198 oop _bootstrap_method; |
| 0 | 199 // Annotations for this class, or null if none. |
| 200 typeArrayOop _class_annotations; | |
| 201 // Annotation objects (byte arrays) for fields, or null if no annotations. | |
| 202 // Indices correspond to entries (not indices) in fields array. | |
| 203 objArrayOop _fields_annotations; | |
| 204 // Annotation objects (byte arrays) for methods, or null if no annotations. | |
| 205 // Index is the idnum, which is initially the same as the methods array index. | |
| 206 objArrayOop _methods_annotations; | |
| 207 // Annotation objects (byte arrays) for methods' parameters, or null if no | |
| 208 // such annotations. | |
| 209 // Index is the idnum, which is initially the same as the methods array index. | |
| 210 objArrayOop _methods_parameter_annotations; | |
| 211 // Annotation objects (byte arrays) for methods' default values, or null if no | |
| 212 // such annotations. | |
| 213 // Index is the idnum, which is initially the same as the methods array index. | |
| 214 objArrayOop _methods_default_annotations; | |
| 215 | |
| 216 // | |
| 217 // End of the oop block. | |
| 218 // | |
| 219 | |
|
165
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
113
diff
changeset
|
220 // Number of heapOopSize words used by non-static fields in this klass |
|
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
113
diff
changeset
|
221 // (including inherited fields but after header_size()). |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
49
diff
changeset
|
222 int _nonstatic_field_size; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
49
diff
changeset
|
223 int _static_field_size; // number words used by static fields (oop and non-oop) in this klass |
| 0 | 224 int _static_oop_field_size;// number of static oop fields in this klass |
| 938 | 225 int _nonstatic_oop_map_size;// size in words of nonstatic oop map blocks |
|
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
226 int _class_flags; // internal class state flags |
| 0 | 227 u2 _minor_version; // minor version number of class file |
| 228 u2 _major_version; // major version number of class file | |
| 229 ClassState _init_state; // state of class | |
| 230 Thread* _init_thread; // Pointer to current thread doing initialization (to handle recusive initialization) | |
| 231 int _vtable_len; // length of Java vtable (in words) | |
| 232 int _itable_len; // length of Java itable (in words) | |
| 233 ReferenceType _reference_type; // reference type | |
| 234 OopMapCache* volatile _oop_map_cache; // OopMapCache for all methods in the klass (allocated lazily) | |
| 235 JNIid* _jni_ids; // First JNI identifier for static fields in this class | |
| 236 jmethodID* _methods_jmethod_ids; // jmethodIDs corresponding to method_idnum, or NULL if none | |
| 237 int* _methods_cached_itable_indices; // itable_index cache for JNI invoke corresponding to methods idnum, or NULL | |
| 238 nmethodBucket* _dependencies; // list of dependent nmethods | |
| 239 nmethod* _osr_nmethods_head; // Head of list of on-stack replacement nmethods for this class | |
| 240 BreakpointInfo* _breakpoints; // bpt lists, managed by methodOop | |
| 241 int _nof_implementors; // No of implementors of this interface (zero if not an interface) | |
| 242 // Array of interesting part(s) of the previous version(s) of this | |
| 243 // instanceKlass. See PreviousVersionWalker below. | |
| 244 GrowableArray<PreviousVersionNode *>* _previous_versions; | |
| 245 u2 _enclosing_method_class_index; // Constant pool index for class of enclosing method, or 0 if none | |
| 246 u2 _enclosing_method_method_index; // Constant pool index for name and type of enclosing method, or 0 if none | |
| 247 // JVMTI fields can be moved to their own structure - see 6315920 | |
| 248 unsigned char * _cached_class_file_bytes; // JVMTI: cached class file, before retransformable agent modified it in CFLH | |
| 249 jint _cached_class_file_len; // JVMTI: length of above | |
| 250 JvmtiCachedClassFieldMap* _jvmti_cached_class_field_map; // JVMTI: used during heap iteration | |
| 251 volatile u2 _idnum_allocated_count; // JNI/JVMTI: increments with the addition of methods, old ids don't change | |
| 252 | |
| 253 // embedded Java vtable follows here | |
| 254 // embedded Java itables follows here | |
| 255 // embedded static fields follows here | |
| 256 // embedded nonstatic oop-map blocks follows here | |
| 257 | |
| 258 friend class instanceKlassKlass; | |
| 259 friend class SystemDictionary; | |
| 260 | |
| 261 public: | |
|
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
262 bool has_nonstatic_fields() const { return (_class_flags & _has_nonstatic_fields) != 0; } |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
263 void set_has_nonstatic_fields() { _class_flags |= _has_nonstatic_fields; } |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
49
diff
changeset
|
264 |
| 0 | 265 // field sizes |
| 266 int nonstatic_field_size() const { return _nonstatic_field_size; } | |
| 267 void set_nonstatic_field_size(int size) { _nonstatic_field_size = size; } | |
| 268 | |
| 269 int static_field_size() const { return _static_field_size; } | |
| 270 void set_static_field_size(int size) { _static_field_size = size; } | |
| 271 | |
| 272 int static_oop_field_size() const { return _static_oop_field_size; } | |
| 273 void set_static_oop_field_size(int size) { _static_oop_field_size = size; } | |
| 274 | |
| 275 // Java vtable | |
| 276 int vtable_length() const { return _vtable_len; } | |
| 277 void set_vtable_length(int len) { _vtable_len = len; } | |
| 278 | |
| 279 // Java itable | |
| 280 int itable_length() const { return _itable_len; } | |
| 281 void set_itable_length(int len) { _itable_len = len; } | |
| 282 | |
| 283 // array klasses | |
| 284 klassOop array_klasses() const { return _array_klasses; } | |
| 285 void set_array_klasses(klassOop k) { oop_store_without_check((oop*) &_array_klasses, (oop) k); } | |
| 286 | |
| 287 // methods | |
| 288 objArrayOop methods() const { return _methods; } | |
| 289 void set_methods(objArrayOop a) { oop_store_without_check((oop*) &_methods, (oop) a); } | |
| 290 methodOop method_with_idnum(int idnum); | |
| 291 | |
| 292 // method ordering | |
| 293 typeArrayOop method_ordering() const { return _method_ordering; } | |
| 294 void set_method_ordering(typeArrayOop m) { oop_store_without_check((oop*) &_method_ordering, (oop) m); } | |
| 295 | |
| 296 // interfaces | |
| 297 objArrayOop local_interfaces() const { return _local_interfaces; } | |
| 298 void set_local_interfaces(objArrayOop a) { oop_store_without_check((oop*) &_local_interfaces, (oop) a); } | |
| 299 objArrayOop transitive_interfaces() const { return _transitive_interfaces; } | |
| 300 void set_transitive_interfaces(objArrayOop a) { oop_store_without_check((oop*) &_transitive_interfaces, (oop) a); } | |
| 301 | |
| 302 // fields | |
| 303 // Field info extracted from the class file and stored | |
| 304 // as an array of 7 shorts | |
| 305 enum FieldOffset { | |
| 306 access_flags_offset = 0, | |
| 307 name_index_offset = 1, | |
| 308 signature_index_offset = 2, | |
| 309 initval_index_offset = 3, | |
| 310 low_offset = 4, | |
| 311 high_offset = 5, | |
| 312 generic_signature_offset = 6, | |
| 313 next_offset = 7 | |
| 314 }; | |
| 315 | |
| 316 typeArrayOop fields() const { return _fields; } | |
| 317 int offset_from_fields( int index ) const { | |
| 318 return build_int_from_shorts( fields()->ushort_at(index + low_offset), | |
| 319 fields()->ushort_at(index + high_offset) ); | |
| 320 } | |
| 321 | |
| 322 void set_fields(typeArrayOop f) { oop_store_without_check((oop*) &_fields, (oop) f); } | |
| 323 | |
| 324 // inner classes | |
| 325 typeArrayOop inner_classes() const { return _inner_classes; } | |
| 326 void set_inner_classes(typeArrayOop f) { oop_store_without_check((oop*) &_inner_classes, (oop) f); } | |
| 327 | |
| 328 enum InnerClassAttributeOffset { | |
| 329 // From http://mirror.eng/products/jdk/1.1/docs/guide/innerclasses/spec/innerclasses.doc10.html#18814 | |
| 330 inner_class_inner_class_info_offset = 0, | |
| 331 inner_class_outer_class_info_offset = 1, | |
| 332 inner_class_inner_name_offset = 2, | |
| 333 inner_class_access_flags_offset = 3, | |
| 334 inner_class_next_offset = 4 | |
| 335 }; | |
| 336 | |
|
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
431
diff
changeset
|
337 // method override check |
|
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
431
diff
changeset
|
338 bool is_override(methodHandle super_method, Handle targetclassloader, symbolHandle targetclassname, TRAPS); |
|
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
431
diff
changeset
|
339 |
| 0 | 340 // package |
| 341 bool is_same_class_package(klassOop class2); | |
| 342 bool is_same_class_package(oop classloader2, symbolOop classname2); | |
| 343 static bool is_same_class_package(oop class_loader1, symbolOop class_name1, oop class_loader2, symbolOop class_name2); | |
| 344 | |
|
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
431
diff
changeset
|
345 // find an enclosing class (defined where original code was, in jvm.cpp!) |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
431
diff
changeset
|
346 klassOop compute_enclosing_class(symbolOop& simple_name_result, TRAPS) { |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
431
diff
changeset
|
347 instanceKlassHandle self(THREAD, this->as_klassOop()); |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
431
diff
changeset
|
348 return compute_enclosing_class_impl(self, simple_name_result, THREAD); |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
431
diff
changeset
|
349 } |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
431
diff
changeset
|
350 static klassOop compute_enclosing_class_impl(instanceKlassHandle self, |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
431
diff
changeset
|
351 symbolOop& simple_name_result, TRAPS); |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
431
diff
changeset
|
352 |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
431
diff
changeset
|
353 // tell if two classes have the same enclosing class (at package level) |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
431
diff
changeset
|
354 bool is_same_package_member(klassOop class2, TRAPS) { |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
431
diff
changeset
|
355 instanceKlassHandle self(THREAD, this->as_klassOop()); |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
431
diff
changeset
|
356 return is_same_package_member_impl(self, class2, THREAD); |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
431
diff
changeset
|
357 } |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
431
diff
changeset
|
358 static bool is_same_package_member_impl(instanceKlassHandle self, |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
431
diff
changeset
|
359 klassOop class2, TRAPS); |
|
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
431
diff
changeset
|
360 |
| 0 | 361 // initialization state |
| 362 bool is_loaded() const { return _init_state >= loaded; } | |
| 363 bool is_linked() const { return _init_state >= linked; } | |
| 364 bool is_initialized() const { return _init_state == fully_initialized; } | |
| 365 bool is_not_initialized() const { return _init_state < being_initialized; } | |
| 366 bool is_being_initialized() const { return _init_state == being_initialized; } | |
| 367 bool is_in_error_state() const { return _init_state == initialization_error; } | |
| 368 bool is_reentrant_initialization(Thread *thread) { return thread == _init_thread; } | |
| 369 int get_init_state() { return _init_state; } // Useful for debugging | |
|
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
370 bool is_rewritten() const { return (_class_flags & _rewritten) != 0; } |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
371 |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
372 // defineClass specified verification |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
373 bool should_verify_class() const { return (_class_flags & _should_verify) != 0; } |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
374 void set_should_verify_class() { _class_flags |= _should_verify; } |
| 0 | 375 |
| 376 // marking | |
|
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
377 bool is_marked_dependent() const { return (_class_flags & _is_marked_dependent) != 0; } |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
378 void set_is_marked_dependent() { _class_flags |= _is_marked_dependent; } |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
379 void clear_is_marked_dependent() { _class_flags &= ~_is_marked_dependent; } |
| 0 | 380 |
| 381 // initialization (virtuals from Klass) | |
| 382 bool should_be_initialized() const; // means that initialize should be called | |
| 383 void initialize(TRAPS); | |
| 384 void link_class(TRAPS); | |
| 385 bool link_class_or_fail(TRAPS); // returns false on failure | |
| 386 void unlink_class(); | |
| 387 void rewrite_class(TRAPS); | |
| 388 methodOop class_initializer(); | |
| 389 | |
| 390 // set the class to initialized if no static initializer is present | |
| 391 void eager_initialize(Thread *thread); | |
| 392 | |
| 393 // reference type | |
| 394 ReferenceType reference_type() const { return _reference_type; } | |
| 395 void set_reference_type(ReferenceType t) { _reference_type = t; } | |
| 396 | |
| 397 // find local field, returns true if found | |
| 398 bool find_local_field(symbolOop name, symbolOop sig, fieldDescriptor* fd) const; | |
| 399 // find field in direct superinterfaces, returns the interface in which the field is defined | |
| 400 klassOop find_interface_field(symbolOop name, symbolOop sig, fieldDescriptor* fd) const; | |
| 401 // find field according to JVM spec 5.4.3.2, returns the klass in which the field is defined | |
| 402 klassOop find_field(symbolOop name, symbolOop sig, fieldDescriptor* fd) const; | |
| 403 // find instance or static fields according to JVM spec 5.4.3.2, returns the klass in which the field is defined | |
| 404 klassOop find_field(symbolOop name, symbolOop sig, bool is_static, fieldDescriptor* fd) const; | |
| 405 | |
| 406 // find a non-static or static field given its offset within the class. | |
| 407 bool contains_field_offset(int offset) { | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
49
diff
changeset
|
408 return instanceOopDesc::contains_field_offset(offset, nonstatic_field_size()); |
| 0 | 409 } |
| 410 | |
| 411 bool find_local_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const; | |
| 412 bool find_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const; | |
| 413 | |
| 414 // find a local method (returns NULL if not found) | |
| 415 methodOop find_method(symbolOop name, symbolOop signature) const; | |
| 416 static methodOop find_method(objArrayOop methods, symbolOop name, symbolOop signature); | |
| 417 | |
| 418 // lookup operation (returns NULL if not found) | |
| 419 methodOop uncached_lookup_method(symbolOop name, symbolOop signature) const; | |
| 420 | |
| 421 // lookup a method in all the interfaces that this class implements | |
| 422 // (returns NULL if not found) | |
| 423 methodOop lookup_method_in_all_interfaces(symbolOop name, symbolOop signature) const; | |
| 424 | |
| 425 // constant pool | |
| 426 constantPoolOop constants() const { return _constants; } | |
| 427 void set_constants(constantPoolOop c) { oop_store_without_check((oop*) &_constants, (oop) c); } | |
| 428 | |
| 429 // class loader | |
| 430 oop class_loader() const { return _class_loader; } | |
| 431 void set_class_loader(oop l) { oop_store((oop*) &_class_loader, l); } | |
| 432 | |
| 433 // protection domain | |
| 434 oop protection_domain() { return _protection_domain; } | |
| 435 void set_protection_domain(oop pd) { oop_store((oop*) &_protection_domain, pd); } | |
| 436 | |
|
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
356
diff
changeset
|
437 // host class |
|
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
356
diff
changeset
|
438 oop host_klass() const { return _host_klass; } |
|
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
356
diff
changeset
|
439 void set_host_klass(oop host) { oop_store((oop*) &_host_klass, host); } |
|
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
356
diff
changeset
|
440 bool is_anonymous() const { return _host_klass != NULL; } |
|
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
356
diff
changeset
|
441 |
| 0 | 442 // signers |
| 443 objArrayOop signers() const { return _signers; } | |
| 444 void set_signers(objArrayOop s) { oop_store((oop*) &_signers, oop(s)); } | |
| 445 | |
| 446 // source file name | |
| 447 symbolOop source_file_name() const { return _source_file_name; } | |
| 448 void set_source_file_name(symbolOop n) { oop_store_without_check((oop*) &_source_file_name, (oop) n); } | |
| 449 | |
| 450 // minor and major version numbers of class file | |
| 451 u2 minor_version() const { return _minor_version; } | |
| 452 void set_minor_version(u2 minor_version) { _minor_version = minor_version; } | |
| 453 u2 major_version() const { return _major_version; } | |
| 454 void set_major_version(u2 major_version) { _major_version = major_version; } | |
| 455 | |
| 456 // source debug extension | |
| 457 symbolOop source_debug_extension() const { return _source_debug_extension; } | |
| 458 void set_source_debug_extension(symbolOop n){ oop_store_without_check((oop*) &_source_debug_extension, (oop) n); } | |
| 459 | |
| 460 // nonstatic oop-map blocks | |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
461 static int nonstatic_oop_map_size(unsigned int oop_map_count) { |
| 938 | 462 return oop_map_count * OopMapBlock::size_in_words(); |
| 463 } | |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
464 unsigned int nonstatic_oop_map_count() const { |
| 938 | 465 return _nonstatic_oop_map_size / OopMapBlock::size_in_words(); |
| 466 } | |
| 467 int nonstatic_oop_map_size() const { return _nonstatic_oop_map_size; } | |
| 468 void set_nonstatic_oop_map_size(int words) { | |
| 469 _nonstatic_oop_map_size = words; | |
| 470 } | |
| 0 | 471 |
| 472 // RedefineClasses() support for previous versions: | |
| 473 void add_previous_version(instanceKlassHandle ikh, BitMap *emcp_methods, | |
| 474 int emcp_method_count); | |
| 475 bool has_previous_version() const; | |
| 476 void init_previous_versions() { | |
| 477 _previous_versions = NULL; | |
| 478 } | |
| 479 GrowableArray<PreviousVersionNode *>* previous_versions() const { | |
| 480 return _previous_versions; | |
| 481 } | |
| 482 | |
| 483 // JVMTI: Support for caching a class file before it is modified by an agent that can do retransformation | |
| 484 void set_cached_class_file(unsigned char *class_file_bytes, | |
| 485 jint class_file_len) { _cached_class_file_len = class_file_len; | |
| 486 _cached_class_file_bytes = class_file_bytes; } | |
| 487 jint get_cached_class_file_len() { return _cached_class_file_len; } | |
| 488 unsigned char * get_cached_class_file_bytes() { return _cached_class_file_bytes; } | |
| 489 | |
| 490 // JVMTI: Support for caching of field indices, types, and offsets | |
| 491 void set_jvmti_cached_class_field_map(JvmtiCachedClassFieldMap* descriptor) { | |
| 492 _jvmti_cached_class_field_map = descriptor; | |
| 493 } | |
| 494 JvmtiCachedClassFieldMap* jvmti_cached_class_field_map() const { | |
| 495 return _jvmti_cached_class_field_map; | |
| 496 } | |
| 497 | |
| 498 // for adding methods, constMethodOopDesc::UNSET_IDNUM means no more ids available | |
| 499 inline u2 next_method_idnum(); | |
| 500 void set_initial_method_idnum(u2 value) { _idnum_allocated_count = value; } | |
| 501 | |
| 502 // generics support | |
| 503 symbolOop generic_signature() const { return _generic_signature; } | |
| 504 void set_generic_signature(symbolOop sig) { oop_store_without_check((oop*)&_generic_signature, (oop)sig); } | |
| 505 u2 enclosing_method_class_index() const { return _enclosing_method_class_index; } | |
| 506 u2 enclosing_method_method_index() const { return _enclosing_method_method_index; } | |
| 507 void set_enclosing_method_indices(u2 class_index, | |
| 508 u2 method_index) { _enclosing_method_class_index = class_index; | |
| 509 _enclosing_method_method_index = method_index; } | |
| 510 | |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
676
diff
changeset
|
511 // JSR 292 support |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
676
diff
changeset
|
512 oop bootstrap_method() const { return _bootstrap_method; } |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
676
diff
changeset
|
513 void set_bootstrap_method(oop mh) { oop_store(&_bootstrap_method, mh); } |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
676
diff
changeset
|
514 |
| 0 | 515 // jmethodID support |
|
49
31000d79ec71
6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents:
47
diff
changeset
|
516 static jmethodID get_jmethod_id(instanceKlassHandle ik_h, size_t idnum, |
|
31000d79ec71
6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents:
47
diff
changeset
|
517 jmethodID new_id, jmethodID* new_jmeths); |
| 0 | 518 static jmethodID jmethod_id_for_impl(instanceKlassHandle ik_h, methodHandle method_h); |
| 519 jmethodID jmethod_id_or_null(methodOop method); | |
| 520 | |
| 521 // cached itable index support | |
| 522 void set_cached_itable_index(size_t idnum, int index); | |
| 523 int cached_itable_index(size_t idnum); | |
| 524 | |
| 525 // annotations support | |
| 526 typeArrayOop class_annotations() const { return _class_annotations; } | |
| 527 objArrayOop fields_annotations() const { return _fields_annotations; } | |
| 528 objArrayOop methods_annotations() const { return _methods_annotations; } | |
| 529 objArrayOop methods_parameter_annotations() const { return _methods_parameter_annotations; } | |
| 530 objArrayOop methods_default_annotations() const { return _methods_default_annotations; } | |
| 531 void set_class_annotations(typeArrayOop md) { oop_store_without_check((oop*)&_class_annotations, (oop)md); } | |
| 532 void set_fields_annotations(objArrayOop md) { set_annotations(md, &_fields_annotations); } | |
| 533 void set_methods_annotations(objArrayOop md) { set_annotations(md, &_methods_annotations); } | |
| 534 void set_methods_parameter_annotations(objArrayOop md) { set_annotations(md, &_methods_parameter_annotations); } | |
| 535 void set_methods_default_annotations(objArrayOop md) { set_annotations(md, &_methods_default_annotations); } | |
| 536 typeArrayOop get_method_annotations_of(int idnum) | |
| 537 { return get_method_annotations_from(idnum, _methods_annotations); } | |
| 538 typeArrayOop get_method_parameter_annotations_of(int idnum) | |
| 539 { return get_method_annotations_from(idnum, _methods_parameter_annotations); } | |
| 540 typeArrayOop get_method_default_annotations_of(int idnum) | |
| 541 { return get_method_annotations_from(idnum, _methods_default_annotations); } | |
| 542 void set_method_annotations_of(int idnum, typeArrayOop anno) | |
| 543 { set_methods_annotations_of(idnum, anno, &_methods_annotations); } | |
| 544 void set_method_parameter_annotations_of(int idnum, typeArrayOop anno) | |
| 545 { set_methods_annotations_of(idnum, anno, &_methods_annotations); } | |
| 546 void set_method_default_annotations_of(int idnum, typeArrayOop anno) | |
| 547 { set_methods_annotations_of(idnum, anno, &_methods_annotations); } | |
| 548 | |
| 549 // allocation | |
| 550 DEFINE_ALLOCATE_PERMANENT(instanceKlass); | |
| 551 instanceOop allocate_instance(TRAPS); | |
| 552 instanceOop allocate_permanent_instance(TRAPS); | |
| 553 | |
| 554 // additional member function to return a handle | |
| 555 instanceHandle allocate_instance_handle(TRAPS) { return instanceHandle(THREAD, allocate_instance(THREAD)); } | |
| 556 | |
| 557 objArrayOop allocate_objArray(int n, int length, TRAPS); | |
| 558 // Helper function | |
| 559 static instanceOop register_finalizer(instanceOop i, TRAPS); | |
| 560 | |
| 561 // Check whether reflection/jni/jvm code is allowed to instantiate this class; | |
| 562 // if not, throw either an Error or an Exception. | |
| 563 virtual void check_valid_for_instantiation(bool throwError, TRAPS); | |
| 564 | |
| 565 // initialization | |
| 566 void call_class_initializer(TRAPS); | |
| 567 void set_initialization_state_and_notify(ClassState state, TRAPS); | |
| 568 | |
| 569 // OopMapCache support | |
| 570 OopMapCache* oop_map_cache() { return _oop_map_cache; } | |
| 571 void set_oop_map_cache(OopMapCache *cache) { _oop_map_cache = cache; } | |
| 572 void mask_for(methodHandle method, int bci, InterpreterOopMap* entry); | |
| 573 | |
| 574 // JNI identifier support (for static fields - for jni performance) | |
| 575 JNIid* jni_ids() { return _jni_ids; } | |
| 576 void set_jni_ids(JNIid* ids) { _jni_ids = ids; } | |
| 577 JNIid* jni_id_for(int offset); | |
| 578 | |
| 579 // maintenance of deoptimization dependencies | |
| 580 int mark_dependent_nmethods(DepChange& changes); | |
| 581 void add_dependent_nmethod(nmethod* nm); | |
| 582 void remove_dependent_nmethod(nmethod* nm); | |
| 583 | |
| 584 // On-stack replacement support | |
| 585 nmethod* osr_nmethods_head() const { return _osr_nmethods_head; }; | |
| 586 void set_osr_nmethods_head(nmethod* h) { _osr_nmethods_head = h; }; | |
| 587 void add_osr_nmethod(nmethod* n); | |
| 588 void remove_osr_nmethod(nmethod* n); | |
| 589 nmethod* lookup_osr_nmethod(const methodOop m, int bci) const; | |
| 590 | |
| 591 // Breakpoint support (see methods on methodOop for details) | |
| 592 BreakpointInfo* breakpoints() const { return _breakpoints; }; | |
| 593 void set_breakpoints(BreakpointInfo* bps) { _breakpoints = bps; }; | |
| 594 | |
| 595 // support for stub routines | |
| 596 static int init_state_offset_in_bytes() { return offset_of(instanceKlass, _init_state); } | |
| 597 static int init_thread_offset_in_bytes() { return offset_of(instanceKlass, _init_thread); } | |
| 598 | |
| 599 // subclass/subinterface checks | |
| 600 bool implements_interface(klassOop k) const; | |
| 601 | |
| 602 // Access to implementors of an interface. We only store the count | |
| 603 // of implementors, and in case, there are only a few | |
| 604 // implementors, we store them in a short list. | |
| 605 // This accessor returns NULL if we walk off the end of the list. | |
| 606 klassOop implementor(int i) const { | |
| 607 return (i < implementors_limit)? _implementors[i]: (klassOop) NULL; | |
| 608 } | |
| 609 int nof_implementors() const { return _nof_implementors; } | |
| 610 void add_implementor(klassOop k); // k is a new class that implements this interface | |
| 611 void init_implementor(); // initialize | |
| 612 | |
| 613 // link this class into the implementors list of every interface it implements | |
| 614 void process_interfaces(Thread *thread); | |
| 615 | |
| 616 // virtual operations from Klass | |
| 617 bool is_leaf_class() const { return _subklass == NULL; } | |
| 618 objArrayOop compute_secondary_supers(int num_extra_slots, TRAPS); | |
| 619 bool compute_is_subtype_of(klassOop k); | |
| 620 bool can_be_primary_super_slow() const; | |
| 621 klassOop java_super() const { return super(); } | |
| 622 int oop_size(oop obj) const { return size_helper(); } | |
| 623 int klass_oop_size() const { return object_size(); } | |
| 624 bool oop_is_instance_slow() const { return true; } | |
| 625 | |
| 626 // Iterators | |
| 627 void do_local_static_fields(FieldClosure* cl); | |
| 628 void do_nonstatic_fields(FieldClosure* cl); // including inherited fields | |
| 629 void do_local_static_fields(void f(fieldDescriptor*, TRAPS), TRAPS); | |
| 630 | |
| 631 void methods_do(void f(methodOop method)); | |
| 632 void array_klasses_do(void f(klassOop k)); | |
| 633 void with_array_klasses_do(void f(klassOop k)); | |
| 634 bool super_types_do(SuperTypeClosure* blk); | |
| 635 | |
| 636 // Casting from klassOop | |
| 637 static instanceKlass* cast(klassOop k) { | |
| 638 Klass* kp = k->klass_part(); | |
| 639 assert(kp->null_vtbl() || kp->oop_is_instance_slow(), "cast to instanceKlass"); | |
| 640 return (instanceKlass*) kp; | |
| 641 } | |
| 642 | |
| 643 // Sizing (in words) | |
| 644 static int header_size() { return align_object_offset(oopDesc::header_size() + sizeof(instanceKlass)/HeapWordSize); } | |
| 645 int object_size() const { return object_size(align_object_offset(vtable_length()) + align_object_offset(itable_length()) + static_field_size() + nonstatic_oop_map_size()); } | |
| 646 static int vtable_start_offset() { return header_size(); } | |
| 647 static int vtable_length_offset() { return oopDesc::header_size() + offset_of(instanceKlass, _vtable_len) / HeapWordSize; } | |
| 648 static int object_size(int extra) { return align_object_size(header_size() + extra); } | |
| 649 | |
| 650 intptr_t* start_of_vtable() const { return ((intptr_t*)as_klassOop()) + vtable_start_offset(); } | |
| 651 intptr_t* start_of_itable() const { return start_of_vtable() + align_object_offset(vtable_length()); } | |
| 652 int itable_offset_in_words() const { return start_of_itable() - (intptr_t*)as_klassOop(); } | |
| 653 | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
49
diff
changeset
|
654 // Static field offset is an offset into the Heap, should be converted by |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
49
diff
changeset
|
655 // based on UseCompressedOop for traversal |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
49
diff
changeset
|
656 HeapWord* start_of_static_fields() const { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
49
diff
changeset
|
657 return (HeapWord*)(start_of_itable() + align_object_offset(itable_length())); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
49
diff
changeset
|
658 } |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
49
diff
changeset
|
659 |
| 0 | 660 intptr_t* end_of_itable() const { return start_of_itable() + itable_length(); } |
| 661 | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
49
diff
changeset
|
662 int offset_of_static_fields() const { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
49
diff
changeset
|
663 return (intptr_t)start_of_static_fields() - (intptr_t)as_klassOop(); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
49
diff
changeset
|
664 } |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
49
diff
changeset
|
665 |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
49
diff
changeset
|
666 OopMapBlock* start_of_nonstatic_oop_maps() const { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
49
diff
changeset
|
667 return (OopMapBlock*) (start_of_static_fields() + static_field_size()); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
49
diff
changeset
|
668 } |
| 0 | 669 |
| 670 // Allocation profiling support | |
| 671 juint alloc_size() const { return _alloc_count * size_helper(); } | |
| 672 void set_alloc_size(juint n) {} | |
| 673 | |
| 674 // Use this to return the size of an instance in heap words: | |
| 675 int size_helper() const { | |
| 676 return layout_helper_to_size_helper(layout_helper()); | |
| 677 } | |
| 678 | |
| 679 // This bit is initialized in classFileParser.cpp. | |
| 680 // It is false under any of the following conditions: | |
| 681 // - the class is abstract (including any interface) | |
| 682 // - the class has a finalizer (if !RegisterFinalizersAtInit) | |
| 683 // - the class size is larger than FastAllocateSizeLimit | |
| 684 // - the class is java/lang/Class, which cannot be allocated directly | |
| 685 bool can_be_fastpath_allocated() const { | |
| 686 return !layout_helper_needs_slow_path(layout_helper()); | |
| 687 } | |
| 688 | |
| 689 // Java vtable/itable | |
| 690 klassVtable* vtable() const; // return new klassVtable wrapper | |
| 691 inline methodOop method_at_vtable(int index); | |
| 692 klassItable* itable() const; // return new klassItable wrapper | |
| 693 methodOop method_at_itable(klassOop holder, int index, TRAPS); | |
| 694 | |
| 695 // Garbage collection | |
| 696 void oop_follow_contents(oop obj); | |
| 697 void follow_static_fields(); | |
| 698 void adjust_static_fields(); | |
| 699 int oop_adjust_pointers(oop obj); | |
| 700 bool object_is_parsable() const { return _init_state != unparsable_by_gc; } | |
| 701 // Value of _init_state must be zero (unparsable_by_gc) when klass field is set. | |
| 702 | |
| 703 void follow_weak_klass_links( | |
| 704 BoolObjectClosure* is_alive, OopClosure* keep_alive); | |
| 705 void release_C_heap_structures(); | |
| 706 | |
| 707 // Parallel Scavenge and Parallel Old | |
| 708 PARALLEL_GC_DECLS | |
| 709 | |
| 710 #ifndef SERIALGC | |
| 711 // Parallel Scavenge | |
| 712 void copy_static_fields(PSPromotionManager* pm); | |
| 713 void push_static_fields(PSPromotionManager* pm); | |
| 714 | |
| 715 // Parallel Old | |
| 716 void follow_static_fields(ParCompactionManager* cm); | |
| 717 void copy_static_fields(ParCompactionManager* cm); | |
| 718 void update_static_fields(); | |
| 719 void update_static_fields(HeapWord* beg_addr, HeapWord* end_addr); | |
| 720 #endif // SERIALGC | |
| 721 | |
| 722 // Naming | |
| 723 char* signature_name() const; | |
| 724 | |
| 725 // Iterators | |
| 726 int oop_oop_iterate(oop obj, OopClosure* blk) { | |
| 727 return oop_oop_iterate_v(obj, blk); | |
| 728 } | |
| 729 | |
| 730 int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) { | |
| 731 return oop_oop_iterate_v_m(obj, blk, mr); | |
| 732 } | |
| 733 | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
113
diff
changeset
|
734 #define InstanceKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix) \ |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
113
diff
changeset
|
735 int oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk); \ |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
113
diff
changeset
|
736 int oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk, \ |
| 0 | 737 MemRegion mr); |
| 738 | |
| 739 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DECL) | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
113
diff
changeset
|
740 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DECL) |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
113
diff
changeset
|
741 |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
113
diff
changeset
|
742 #ifndef SERIALGC |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
113
diff
changeset
|
743 #define InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DECL(OopClosureType, nv_suffix) \ |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
113
diff
changeset
|
744 int oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* blk); |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
113
diff
changeset
|
745 |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
113
diff
changeset
|
746 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DECL) |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
113
diff
changeset
|
747 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DECL) |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
113
diff
changeset
|
748 #endif // !SERIALGC |
| 0 | 749 |
| 750 void iterate_static_fields(OopClosure* closure); | |
| 751 void iterate_static_fields(OopClosure* closure, MemRegion mr); | |
| 752 | |
| 753 private: | |
| 754 // initialization state | |
| 755 #ifdef ASSERT | |
| 756 void set_init_state(ClassState state); | |
| 757 #else | |
| 758 void set_init_state(ClassState state) { _init_state = state; } | |
| 759 #endif | |
|
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
760 void clear_class_flags() { _class_flags = _noflags; } |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
726
diff
changeset
|
761 void set_rewritten() { _class_flags |= _rewritten; } |
| 0 | 762 void set_init_thread(Thread *thread) { _init_thread = thread; } |
| 763 | |
| 764 u2 idnum_allocated_count() const { return _idnum_allocated_count; } | |
| 765 jmethodID* methods_jmethod_ids_acquire() const | |
| 766 { return (jmethodID*)OrderAccess::load_ptr_acquire(&_methods_jmethod_ids); } | |
| 767 void release_set_methods_jmethod_ids(jmethodID* jmeths) | |
| 768 { OrderAccess::release_store_ptr(&_methods_jmethod_ids, jmeths); } | |
| 769 | |
| 770 int* methods_cached_itable_indices_acquire() const | |
| 771 { return (int*)OrderAccess::load_ptr_acquire(&_methods_cached_itable_indices); } | |
| 772 void release_set_methods_cached_itable_indices(int* indices) | |
| 773 { OrderAccess::release_store_ptr(&_methods_cached_itable_indices, indices); } | |
| 774 | |
| 775 inline typeArrayOop get_method_annotations_from(int idnum, objArrayOop annos); | |
| 776 void set_annotations(objArrayOop md, objArrayOop* md_p) { oop_store_without_check((oop*)md_p, (oop)md); } | |
| 777 void set_methods_annotations_of(int idnum, typeArrayOop anno, objArrayOop* md_p); | |
| 778 | |
| 779 // Offsets for memory management | |
| 780 oop* adr_array_klasses() const { return (oop*)&this->_array_klasses;} | |
| 781 oop* adr_methods() const { return (oop*)&this->_methods;} | |
| 782 oop* adr_method_ordering() const { return (oop*)&this->_method_ordering;} | |
| 783 oop* adr_local_interfaces() const { return (oop*)&this->_local_interfaces;} | |
| 784 oop* adr_transitive_interfaces() const { return (oop*)&this->_transitive_interfaces;} | |
| 785 oop* adr_fields() const { return (oop*)&this->_fields;} | |
| 786 oop* adr_constants() const { return (oop*)&this->_constants;} | |
| 787 oop* adr_class_loader() const { return (oop*)&this->_class_loader;} | |
| 788 oop* adr_protection_domain() const { return (oop*)&this->_protection_domain;} | |
|
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
356
diff
changeset
|
789 oop* adr_host_klass() const { return (oop*)&this->_host_klass;} |
| 0 | 790 oop* adr_signers() const { return (oop*)&this->_signers;} |
| 791 oop* adr_source_file_name() const { return (oop*)&this->_source_file_name;} | |
| 792 oop* adr_source_debug_extension() const { return (oop*)&this->_source_debug_extension;} | |
| 793 oop* adr_inner_classes() const { return (oop*)&this->_inner_classes;} | |
| 794 oop* adr_implementors() const { return (oop*)&this->_implementors[0];} | |
| 795 oop* adr_generic_signature() const { return (oop*)&this->_generic_signature;} | |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
676
diff
changeset
|
796 oop* adr_bootstrap_method() const { return (oop*)&this->_bootstrap_method;} |
| 0 | 797 oop* adr_methods_jmethod_ids() const { return (oop*)&this->_methods_jmethod_ids;} |
| 798 oop* adr_methods_cached_itable_indices() const { return (oop*)&this->_methods_cached_itable_indices;} | |
| 799 oop* adr_class_annotations() const { return (oop*)&this->_class_annotations;} | |
| 800 oop* adr_fields_annotations() const { return (oop*)&this->_fields_annotations;} | |
| 801 oop* adr_methods_annotations() const { return (oop*)&this->_methods_annotations;} | |
| 802 oop* adr_methods_parameter_annotations() const { return (oop*)&this->_methods_parameter_annotations;} | |
| 803 oop* adr_methods_default_annotations() const { return (oop*)&this->_methods_default_annotations;} | |
| 804 | |
| 805 // Static methods that are used to implement member methods where an exposed this pointer | |
| 806 // is needed due to possible GCs | |
| 807 static bool link_class_impl (instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS); | |
| 808 static bool verify_code (instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS); | |
| 809 static void initialize_impl (instanceKlassHandle this_oop, TRAPS); | |
| 810 static void eager_initialize_impl (instanceKlassHandle this_oop); | |
| 811 static void set_initialization_state_and_notify_impl (instanceKlassHandle this_oop, ClassState state, TRAPS); | |
| 812 static void call_class_initializer_impl (instanceKlassHandle this_oop, TRAPS); | |
| 813 static klassOop array_klass_impl (instanceKlassHandle this_oop, bool or_null, int n, TRAPS); | |
| 814 static void do_local_static_fields_impl (instanceKlassHandle this_oop, void f(fieldDescriptor* fd, TRAPS), TRAPS); | |
| 815 /* jni_id_for_impl for jfieldID only */ | |
| 816 static JNIid* jni_id_for_impl (instanceKlassHandle this_oop, int offset); | |
| 817 | |
| 818 // Returns the array class for the n'th dimension | |
| 819 klassOop array_klass_impl(bool or_null, int n, TRAPS); | |
| 820 | |
| 821 // Returns the array class with this class as element type | |
| 822 klassOop array_klass_impl(bool or_null, TRAPS); | |
| 823 | |
| 824 public: | |
| 825 // sharing support | |
| 826 virtual void remove_unshareable_info(); | |
| 827 void field_names_and_sigs_iterate(OopClosure* closure); | |
| 828 | |
| 829 // jvm support | |
| 830 jint compute_modifier_flags(TRAPS) const; | |
| 831 | |
| 832 public: | |
| 833 // JVMTI support | |
| 834 jint jvmti_class_status() const; | |
| 835 | |
| 836 #ifndef PRODUCT | |
| 837 public: | |
| 838 // Printing | |
| 839 void oop_print_on (oop obj, outputStream* st); | |
| 840 void oop_print_value_on(oop obj, outputStream* st); | |
| 841 | |
| 842 void print_dependent_nmethods(bool verbose = false); | |
| 843 bool is_dependent_nmethod(nmethod* nm); | |
| 844 #endif | |
| 845 | |
| 846 public: | |
| 847 // Verification | |
| 848 const char* internal_name() const; | |
| 849 void oop_verify_on(oop obj, outputStream* st); | |
| 850 | |
| 851 #ifndef PRODUCT | |
| 852 static void verify_class_klass_nonstatic_oop_maps(klassOop k) PRODUCT_RETURN; | |
| 853 #endif | |
| 854 }; | |
| 855 | |
| 856 inline methodOop instanceKlass::method_at_vtable(int index) { | |
| 857 #ifndef PRODUCT | |
| 858 assert(index >= 0, "valid vtable index"); | |
| 859 if (DebugVtables) { | |
| 860 verify_vtable_index(index); | |
| 861 } | |
| 862 #endif | |
| 863 vtableEntry* ve = (vtableEntry*)start_of_vtable(); | |
| 864 return ve[index].method(); | |
| 865 } | |
| 866 | |
| 867 inline typeArrayOop instanceKlass::get_method_annotations_from(int idnum, objArrayOop annos) { | |
| 868 if (annos == NULL || annos->length() <= idnum) { | |
| 869 return NULL; | |
| 870 } | |
| 871 return typeArrayOop(annos->obj_at(idnum)); | |
| 872 } | |
| 873 | |
| 874 // for adding methods | |
| 875 // UNSET_IDNUM return means no more ids available | |
| 876 inline u2 instanceKlass::next_method_idnum() { | |
| 877 if (_idnum_allocated_count == constMethodOopDesc::MAX_IDNUM) { | |
| 878 return constMethodOopDesc::UNSET_IDNUM; // no more ids available | |
| 879 } else { | |
| 880 return _idnum_allocated_count++; | |
| 881 } | |
| 882 } | |
| 883 | |
| 884 | |
| 885 /* JNIid class for jfieldIDs only */ | |
| 886 class JNIid: public CHeapObj { | |
| 887 friend class VMStructs; | |
| 888 private: | |
| 889 klassOop _holder; | |
| 890 JNIid* _next; | |
| 891 int _offset; | |
| 892 #ifdef ASSERT | |
| 893 bool _is_static_field_id; | |
| 894 #endif | |
| 895 | |
| 896 public: | |
| 897 // Accessors | |
| 898 klassOop holder() const { return _holder; } | |
| 899 int offset() const { return _offset; } | |
| 900 JNIid* next() { return _next; } | |
| 901 // Constructor | |
| 902 JNIid(klassOop holder, int offset, JNIid* next); | |
| 903 // Identifier lookup | |
| 904 JNIid* find(int offset); | |
| 905 | |
| 906 // Garbage collection support | |
| 907 oop* holder_addr() { return (oop*)&_holder; } | |
| 908 void oops_do(OopClosure* f); | |
| 909 static void deallocate(JNIid* id); | |
| 910 // Debugging | |
| 911 #ifdef ASSERT | |
| 912 bool is_static_field_id() const { return _is_static_field_id; } | |
| 913 void set_is_static_field_id() { _is_static_field_id = true; } | |
| 914 #endif | |
| 915 void verify(klassOop holder); | |
| 916 }; | |
| 917 | |
| 918 | |
| 919 // If breakpoints are more numerous than just JVMTI breakpoints, | |
| 920 // consider compressing this data structure. | |
| 921 // It is currently a simple linked list defined in methodOop.hpp. | |
| 922 | |
| 923 class BreakpointInfo; | |
| 924 | |
| 925 | |
| 926 // A collection point for interesting information about the previous | |
| 927 // version(s) of an instanceKlass. This class uses weak references to | |
| 928 // the information so that the information may be collected as needed | |
|
47
2c106685d6d0
6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents:
0
diff
changeset
|
929 // by the system. If the information is shared, then a regular |
|
2c106685d6d0
6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents:
0
diff
changeset
|
930 // reference must be used because a weak reference would be seen as |
|
2c106685d6d0
6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents:
0
diff
changeset
|
931 // collectible. A GrowableArray of PreviousVersionNodes is attached |
| 0 | 932 // to the instanceKlass as needed. See PreviousVersionWalker below. |
| 933 class PreviousVersionNode : public CHeapObj { | |
| 934 private: | |
|
47
2c106685d6d0
6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents:
0
diff
changeset
|
935 // A shared ConstantPool is never collected so we'll always have |
|
2c106685d6d0
6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents:
0
diff
changeset
|
936 // a reference to it so we can update items in the cache. We'll |
|
2c106685d6d0
6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents:
0
diff
changeset
|
937 // have a weak reference to a non-shared ConstantPool until all |
|
2c106685d6d0
6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents:
0
diff
changeset
|
938 // of the methods (EMCP or obsolete) have been collected; the |
|
2c106685d6d0
6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents:
0
diff
changeset
|
939 // non-shared ConstantPool becomes collectible at that point. |
|
2c106685d6d0
6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents:
0
diff
changeset
|
940 jobject _prev_constant_pool; // regular or weak reference |
|
2c106685d6d0
6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents:
0
diff
changeset
|
941 bool _prev_cp_is_weak; // true if not a shared ConstantPool |
|
2c106685d6d0
6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents:
0
diff
changeset
|
942 |
| 0 | 943 // If the previous version of the instanceKlass doesn't have any |
| 944 // EMCP methods, then _prev_EMCP_methods will be NULL. If all the | |
| 945 // EMCP methods have been collected, then _prev_EMCP_methods can | |
| 946 // have a length of zero. | |
| 947 GrowableArray<jweak>* _prev_EMCP_methods; | |
| 948 | |
| 949 public: | |
|
47
2c106685d6d0
6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents:
0
diff
changeset
|
950 PreviousVersionNode(jobject prev_constant_pool, bool prev_cp_is_weak, |
| 0 | 951 GrowableArray<jweak>* prev_EMCP_methods); |
| 952 ~PreviousVersionNode(); | |
|
47
2c106685d6d0
6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents:
0
diff
changeset
|
953 jobject prev_constant_pool() const { |
| 0 | 954 return _prev_constant_pool; |
| 955 } | |
| 956 GrowableArray<jweak>* prev_EMCP_methods() const { | |
| 957 return _prev_EMCP_methods; | |
| 958 } | |
| 959 }; | |
| 960 | |
| 961 | |
| 962 // A Handle-ized version of PreviousVersionNode. | |
| 963 class PreviousVersionInfo : public ResourceObj { | |
| 964 private: | |
| 965 constantPoolHandle _prev_constant_pool_handle; | |
| 966 // If the previous version of the instanceKlass doesn't have any | |
| 967 // EMCP methods, then _prev_EMCP_methods will be NULL. Since the | |
| 968 // methods cannot be collected while we hold a handle, | |
| 969 // _prev_EMCP_methods should never have a length of zero. | |
| 970 GrowableArray<methodHandle>* _prev_EMCP_method_handles; | |
| 971 | |
| 972 public: | |
| 973 PreviousVersionInfo(PreviousVersionNode *pv_node); | |
| 974 ~PreviousVersionInfo(); | |
| 975 constantPoolHandle prev_constant_pool_handle() const { | |
| 976 return _prev_constant_pool_handle; | |
| 977 } | |
| 978 GrowableArray<methodHandle>* prev_EMCP_method_handles() const { | |
| 979 return _prev_EMCP_method_handles; | |
| 980 } | |
| 981 }; | |
| 982 | |
| 983 | |
| 984 // Helper object for walking previous versions. This helper cleans up | |
| 985 // the Handles that it allocates when the helper object is destroyed. | |
| 986 // The PreviousVersionInfo object returned by next_previous_version() | |
| 987 // is only valid until a subsequent call to next_previous_version() or | |
| 988 // the helper object is destroyed. | |
| 989 class PreviousVersionWalker : public StackObj { | |
| 990 private: | |
| 991 GrowableArray<PreviousVersionNode *>* _previous_versions; | |
| 992 int _current_index; | |
| 993 // Fields for cleaning up when we are done walking the previous versions: | |
| 994 // A HandleMark for the PreviousVersionInfo handles: | |
| 995 HandleMark _hm; | |
| 996 | |
| 997 // It would be nice to have a ResourceMark field in this helper also, | |
| 998 // but the ResourceMark code says to be careful to delete handles held | |
| 999 // in GrowableArrays _before_ deleting the GrowableArray. Since we | |
| 1000 // can't guarantee the order in which the fields are destroyed, we | |
| 1001 // have to let the creator of the PreviousVersionWalker object do | |
| 1002 // the right thing. Also, adding a ResourceMark here causes an | |
| 1003 // include loop. | |
| 1004 | |
| 1005 // A pointer to the current info object so we can handle the deletes. | |
| 1006 PreviousVersionInfo * _current_p; | |
| 1007 | |
| 1008 public: | |
| 1009 PreviousVersionWalker(instanceKlass *ik); | |
| 1010 ~PreviousVersionWalker(); | |
| 1011 | |
| 1012 // Return the interesting information for the next previous version | |
| 1013 // of the klass. Returns NULL if there are no more previous versions. | |
| 1014 PreviousVersionInfo* next_previous_version(); | |
| 1015 }; |