Wed, 09 May 2012 10:54:29 -0700
Merge
duke@435 | 1 | /* |
jiangli@3701 | 2 | * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #ifndef SHARE_VM_OOPS_INSTANCEKLASS_HPP |
stefank@2314 | 26 | #define SHARE_VM_OOPS_INSTANCEKLASS_HPP |
stefank@2314 | 27 | |
stefank@2314 | 28 | #include "oops/constMethodOop.hpp" |
stefank@2314 | 29 | #include "oops/constantPoolOop.hpp" |
never@3137 | 30 | #include "oops/fieldInfo.hpp" |
stefank@2314 | 31 | #include "oops/instanceOop.hpp" |
stefank@2314 | 32 | #include "oops/klassOop.hpp" |
stefank@2314 | 33 | #include "oops/klassVtable.hpp" |
stefank@2314 | 34 | #include "oops/objArrayOop.hpp" |
stefank@2314 | 35 | #include "runtime/handles.hpp" |
stefank@2314 | 36 | #include "runtime/os.hpp" |
stefank@2314 | 37 | #include "utilities/accessFlags.hpp" |
stefank@2314 | 38 | #include "utilities/bitMap.inline.hpp" |
stefank@2314 | 39 | |
duke@435 | 40 | // An instanceKlass is the VM level representation of a Java class. |
duke@435 | 41 | // It contains all information needed for at class at execution runtime. |
duke@435 | 42 | |
duke@435 | 43 | // instanceKlass layout: |
duke@435 | 44 | // [header ] klassOop |
duke@435 | 45 | // [klass pointer ] klassOop |
duke@435 | 46 | // [C++ vtbl pointer ] Klass |
duke@435 | 47 | // [subtype cache ] Klass |
duke@435 | 48 | // [instance size ] Klass |
duke@435 | 49 | // [java mirror ] Klass |
duke@435 | 50 | // [super ] Klass |
duke@435 | 51 | // [access_flags ] Klass |
duke@435 | 52 | // [name ] Klass |
duke@435 | 53 | // [first subklass ] Klass |
duke@435 | 54 | // [next sibling ] Klass |
duke@435 | 55 | // [array klasses ] |
duke@435 | 56 | // [methods ] |
duke@435 | 57 | // [local interfaces ] |
duke@435 | 58 | // [transitive interfaces ] |
duke@435 | 59 | // [fields ] |
duke@435 | 60 | // [constants ] |
duke@435 | 61 | // [class loader ] |
duke@435 | 62 | // [protection domain ] |
duke@435 | 63 | // [signers ] |
duke@435 | 64 | // [source file name ] |
duke@435 | 65 | // [inner classes ] |
duke@435 | 66 | // [static field size ] |
duke@435 | 67 | // [nonstatic field size ] |
duke@435 | 68 | // [static oop fields size ] |
duke@435 | 69 | // [nonstatic oop maps size ] |
duke@435 | 70 | // [has finalize method ] |
duke@435 | 71 | // [deoptimization mark bit ] |
duke@435 | 72 | // [initialization state ] |
duke@435 | 73 | // [initializing thread ] |
duke@435 | 74 | // [Java vtable length ] |
duke@435 | 75 | // [oop map cache (stack maps) ] |
duke@435 | 76 | // [EMBEDDED Java vtable ] size in words = vtable_len |
duke@435 | 77 | // [EMBEDDED nonstatic oop-map blocks] size in words = nonstatic_oop_map_size |
jiangli@3701 | 78 | // The embedded nonstatic oop-map blocks are short pairs (offset, length) |
jiangli@3701 | 79 | // indicating where oops are located in instances of this klass. |
jiangli@3701 | 80 | // [EMBEDDED implementor of the interface] only exist for interface |
jiangli@3741 | 81 | // [EMBEDDED host klass ] only exist for an anonymous class (JSR 292 enabled) |
duke@435 | 82 | |
duke@435 | 83 | |
duke@435 | 84 | // forward declaration for class -- see below for definition |
duke@435 | 85 | class SuperTypeClosure; |
duke@435 | 86 | class JNIid; |
duke@435 | 87 | class jniIdMapBase; |
duke@435 | 88 | class BreakpointInfo; |
duke@435 | 89 | class fieldDescriptor; |
duke@435 | 90 | class DepChange; |
duke@435 | 91 | class nmethodBucket; |
duke@435 | 92 | class PreviousVersionNode; |
duke@435 | 93 | class JvmtiCachedClassFieldMap; |
duke@435 | 94 | |
duke@435 | 95 | // This is used in iterators below. |
duke@435 | 96 | class FieldClosure: public StackObj { |
duke@435 | 97 | public: |
duke@435 | 98 | virtual void do_field(fieldDescriptor* fd) = 0; |
duke@435 | 99 | }; |
duke@435 | 100 | |
duke@435 | 101 | #ifndef PRODUCT |
duke@435 | 102 | // Print fields. |
duke@435 | 103 | // If "obj" argument to constructor is NULL, prints static fields, otherwise prints non-static fields. |
duke@435 | 104 | class FieldPrinter: public FieldClosure { |
duke@435 | 105 | oop _obj; |
duke@435 | 106 | outputStream* _st; |
duke@435 | 107 | public: |
duke@435 | 108 | FieldPrinter(outputStream* st, oop obj = NULL) : _obj(obj), _st(st) {} |
duke@435 | 109 | void do_field(fieldDescriptor* fd); |
duke@435 | 110 | }; |
duke@435 | 111 | #endif // !PRODUCT |
duke@435 | 112 | |
jcoomes@1373 | 113 | // ValueObjs embedded in klass. Describes where oops are located in instances of |
jcoomes@1373 | 114 | // this klass. |
jcoomes@1373 | 115 | class OopMapBlock VALUE_OBJ_CLASS_SPEC { |
jcoomes@1373 | 116 | public: |
jcoomes@1373 | 117 | // Byte offset of the first oop mapped by this block. |
jcoomes@1374 | 118 | int offset() const { return _offset; } |
jcoomes@1374 | 119 | void set_offset(int offset) { _offset = offset; } |
jcoomes@1373 | 120 | |
jcoomes@1373 | 121 | // Number of oops in this block. |
jcoomes@1374 | 122 | uint count() const { return _count; } |
jcoomes@1374 | 123 | void set_count(uint count) { _count = count; } |
jcoomes@1373 | 124 | |
jcoomes@1373 | 125 | // sizeof(OopMapBlock) in HeapWords. |
jcoomes@1373 | 126 | static const int size_in_words() { |
jcoomes@1373 | 127 | return align_size_up(int(sizeof(OopMapBlock)), HeapWordSize) >> |
jcoomes@1373 | 128 | LogHeapWordSize; |
jcoomes@1373 | 129 | } |
jcoomes@1373 | 130 | |
jcoomes@1373 | 131 | private: |
jcoomes@1374 | 132 | int _offset; |
jcoomes@1374 | 133 | uint _count; |
jcoomes@1373 | 134 | }; |
jcoomes@1373 | 135 | |
duke@435 | 136 | class instanceKlass: public Klass { |
duke@435 | 137 | friend class VMStructs; |
duke@435 | 138 | public: |
duke@435 | 139 | // See "The Java Virtual Machine Specification" section 2.16.2-5 for a detailed description |
duke@435 | 140 | // of the class loading & initialization procedure, and the use of the states. |
duke@435 | 141 | enum ClassState { |
duke@435 | 142 | unparsable_by_gc = 0, // object is not yet parsable by gc. Value of _init_state at object allocation. |
duke@435 | 143 | allocated, // allocated (but not yet linked) |
duke@435 | 144 | loaded, // loaded and inserted in class hierarchy (but not linked yet) |
duke@435 | 145 | linked, // successfully linked/verified (but not initialized yet) |
duke@435 | 146 | being_initialized, // currently running class initializer |
duke@435 | 147 | fully_initialized, // initialized (successfull final state) |
duke@435 | 148 | initialization_error // error happened during initialization |
duke@435 | 149 | }; |
duke@435 | 150 | |
duke@435 | 151 | public: |
duke@435 | 152 | oop* oop_block_beg() const { return adr_array_klasses(); } |
duke@435 | 153 | oop* oop_block_end() const { return adr_methods_default_annotations() + 1; } |
duke@435 | 154 | |
duke@435 | 155 | protected: |
duke@435 | 156 | // |
duke@435 | 157 | // The oop block. See comment in klass.hpp before making changes. |
duke@435 | 158 | // |
duke@435 | 159 | |
duke@435 | 160 | // Array classes holding elements of this class. |
duke@435 | 161 | klassOop _array_klasses; |
duke@435 | 162 | // Method array. |
duke@435 | 163 | objArrayOop _methods; |
duke@435 | 164 | // Int array containing the original order of method in the class file (for |
duke@435 | 165 | // JVMTI). |
duke@435 | 166 | typeArrayOop _method_ordering; |
duke@435 | 167 | // Interface (klassOops) this class declares locally to implement. |
duke@435 | 168 | objArrayOop _local_interfaces; |
duke@435 | 169 | // Interface (klassOops) this class implements transitively. |
duke@435 | 170 | objArrayOop _transitive_interfaces; |
duke@435 | 171 | // Instance and static variable information, 5-tuples of shorts [access, name |
duke@435 | 172 | // index, sig index, initval index, offset]. |
duke@435 | 173 | typeArrayOop _fields; |
duke@435 | 174 | // Constant pool for this class. |
duke@435 | 175 | constantPoolOop _constants; |
duke@435 | 176 | // Class loader used to load this class, NULL if VM loader used. |
duke@435 | 177 | oop _class_loader; |
duke@435 | 178 | // Protection domain. |
duke@435 | 179 | oop _protection_domain; |
duke@435 | 180 | // Class signers. |
duke@435 | 181 | objArrayOop _signers; |
jiangli@3670 | 182 | // The InnerClasses attribute and EnclosingMethod attribute. The |
jiangli@3670 | 183 | // _inner_classes is an array of shorts. If the class has InnerClasses |
jiangli@3670 | 184 | // attribute, then the _inner_classes array begins with 4-tuples of shorts |
jiangli@3670 | 185 | // [inner_class_info_index, outer_class_info_index, |
jiangli@3670 | 186 | // inner_name_index, inner_class_access_flags] for the InnerClasses |
jiangli@3670 | 187 | // attribute. If the EnclosingMethod attribute exists, it occupies the |
jiangli@3670 | 188 | // last two shorts [class_index, method_index] of the array. If only |
jiangli@3670 | 189 | // the InnerClasses attribute exists, the _inner_classes array length is |
jiangli@3670 | 190 | // number_of_inner_classes * 4. If the class has both InnerClasses |
jiangli@3670 | 191 | // and EnclosingMethod attributes the _inner_classes array length is |
jiangli@3670 | 192 | // number_of_inner_classes * 4 + enclosing_method_attribute_size. |
duke@435 | 193 | typeArrayOop _inner_classes; |
duke@435 | 194 | // Annotations for this class, or null if none. |
duke@435 | 195 | typeArrayOop _class_annotations; |
duke@435 | 196 | // Annotation objects (byte arrays) for fields, or null if no annotations. |
duke@435 | 197 | // Indices correspond to entries (not indices) in fields array. |
duke@435 | 198 | objArrayOop _fields_annotations; |
duke@435 | 199 | // Annotation objects (byte arrays) for methods, or null if no annotations. |
duke@435 | 200 | // Index is the idnum, which is initially the same as the methods array index. |
duke@435 | 201 | objArrayOop _methods_annotations; |
duke@435 | 202 | // Annotation objects (byte arrays) for methods' parameters, or null if no |
duke@435 | 203 | // such annotations. |
duke@435 | 204 | // Index is the idnum, which is initially the same as the methods array index. |
duke@435 | 205 | objArrayOop _methods_parameter_annotations; |
duke@435 | 206 | // Annotation objects (byte arrays) for methods' default values, or null if no |
duke@435 | 207 | // such annotations. |
duke@435 | 208 | // Index is the idnum, which is initially the same as the methods array index. |
duke@435 | 209 | objArrayOop _methods_default_annotations; |
duke@435 | 210 | |
duke@435 | 211 | // |
duke@435 | 212 | // End of the oop block. |
duke@435 | 213 | // |
duke@435 | 214 | |
coleenp@2497 | 215 | // Name of source file containing this klass, NULL if not specified. |
coleenp@2497 | 216 | Symbol* _source_file_name; |
coleenp@2497 | 217 | // the source debug extension for this klass, NULL if not specified. |
coleenp@2497 | 218 | Symbol* _source_debug_extension; |
coleenp@2497 | 219 | // Generic signature, or null if none. |
coleenp@2497 | 220 | Symbol* _generic_signature; |
coleenp@2497 | 221 | // Array name derived from this class which needs unreferencing |
coleenp@2497 | 222 | // if this class is unloaded. |
coleenp@2497 | 223 | Symbol* _array_name; |
coleenp@2497 | 224 | |
kvn@600 | 225 | // Number of heapOopSize words used by non-static fields in this klass |
kvn@600 | 226 | // (including inherited fields but after header_size()). |
coleenp@548 | 227 | int _nonstatic_field_size; |
coleenp@548 | 228 | int _static_field_size; // number words used by static fields (oop and non-oop) in this klass |
jiangli@3373 | 229 | u2 _static_oop_field_count;// number of static oop fields in this klass |
jiangli@3373 | 230 | u2 _java_fields_count; // The number of declared Java fields |
jcoomes@1373 | 231 | int _nonstatic_oop_map_size;// size in words of nonstatic oop map blocks |
coleenp@3366 | 232 | |
dcubed@3401 | 233 | bool _is_marked_dependent; // used for marking during flushing and deoptimization |
jiangli@3741 | 234 | enum { |
jiangli@3741 | 235 | _misc_rewritten = 1 << 0, // methods rewritten. |
jiangli@3741 | 236 | _misc_has_nonstatic_fields = 1 << 1, // for sizing with UseCompressedOops |
jiangli@3741 | 237 | _misc_should_verify_class = 1 << 2, // allow caching of preverification |
jiangli@3741 | 238 | _misc_is_anonymous = 1 << 3 // has embedded _inner_classes field |
jiangli@3741 | 239 | }; |
jiangli@3741 | 240 | u2 _misc_flags; |
duke@435 | 241 | u2 _minor_version; // minor version number of class file |
duke@435 | 242 | u2 _major_version; // major version number of class file |
duke@435 | 243 | Thread* _init_thread; // Pointer to current thread doing initialization (to handle recusive initialization) |
duke@435 | 244 | int _vtable_len; // length of Java vtable (in words) |
duke@435 | 245 | int _itable_len; // length of Java itable (in words) |
duke@435 | 246 | OopMapCache* volatile _oop_map_cache; // OopMapCache for all methods in the klass (allocated lazily) |
duke@435 | 247 | JNIid* _jni_ids; // First JNI identifier for static fields in this class |
duke@435 | 248 | jmethodID* _methods_jmethod_ids; // jmethodIDs corresponding to method_idnum, or NULL if none |
duke@435 | 249 | int* _methods_cached_itable_indices; // itable_index cache for JNI invoke corresponding to methods idnum, or NULL |
duke@435 | 250 | nmethodBucket* _dependencies; // list of dependent nmethods |
duke@435 | 251 | nmethod* _osr_nmethods_head; // Head of list of on-stack replacement nmethods for this class |
duke@435 | 252 | BreakpointInfo* _breakpoints; // bpt lists, managed by methodOop |
duke@435 | 253 | // Array of interesting part(s) of the previous version(s) of this |
duke@435 | 254 | // instanceKlass. See PreviousVersionWalker below. |
duke@435 | 255 | GrowableArray<PreviousVersionNode *>* _previous_versions; |
duke@435 | 256 | // JVMTI fields can be moved to their own structure - see 6315920 |
duke@435 | 257 | unsigned char * _cached_class_file_bytes; // JVMTI: cached class file, before retransformable agent modified it in CFLH |
duke@435 | 258 | jint _cached_class_file_len; // JVMTI: length of above |
duke@435 | 259 | JvmtiCachedClassFieldMap* _jvmti_cached_class_field_map; // JVMTI: used during heap iteration |
duke@435 | 260 | volatile u2 _idnum_allocated_count; // JNI/JVMTI: increments with the addition of methods, old ids don't change |
duke@435 | 261 | |
coleenp@3368 | 262 | // Class states are defined as ClassState (see above). |
coleenp@3368 | 263 | // Place the _init_state here to utilize the unused 2-byte after |
coleenp@3368 | 264 | // _idnum_allocated_count. |
coleenp@3368 | 265 | u1 _init_state; // state of class |
coleenp@3368 | 266 | |
jiangli@3526 | 267 | u1 _reference_type; // reference type |
jiangli@3526 | 268 | |
duke@435 | 269 | // embedded Java vtable follows here |
duke@435 | 270 | // embedded Java itables follows here |
duke@435 | 271 | // embedded static fields follows here |
duke@435 | 272 | // embedded nonstatic oop-map blocks follows here |
jiangli@3701 | 273 | // embedded implementor of this interface follows here |
jiangli@3701 | 274 | // The embedded implementor only exists if the current klass is an |
jiangli@3701 | 275 | // iterface. The possible values of the implementor fall into following |
jiangli@3701 | 276 | // three cases: |
jiangli@3701 | 277 | // NULL: no implementor. |
jiangli@3701 | 278 | // A klassOop that's not itself: one implementor. |
jiangli@3701 | 279 | // Itsef: more than one implementors. |
jiangli@3741 | 280 | // embedded host klass follows here |
jiangli@3741 | 281 | // The embedded host klass only exists in an anonymous class for |
jiangli@3741 | 282 | // dynamic language support (JSR 292 enabled). The host class grants |
jiangli@3741 | 283 | // its access privileges to this class also. The host class is either |
jiangli@3741 | 284 | // named, or a previously loaded anonymous class. A non-anonymous class |
jiangli@3741 | 285 | // or an anonymous class loaded through normal classloading does not |
jiangli@3741 | 286 | // have this embedded field. |
jiangli@3741 | 287 | // |
duke@435 | 288 | |
duke@435 | 289 | friend class instanceKlassKlass; |
duke@435 | 290 | friend class SystemDictionary; |
duke@435 | 291 | |
duke@435 | 292 | public: |
jiangli@3741 | 293 | bool has_nonstatic_fields() const { |
jiangli@3741 | 294 | return (_misc_flags & _misc_has_nonstatic_fields) != 0; |
jiangli@3741 | 295 | } |
jiangli@3741 | 296 | void set_has_nonstatic_fields(bool b) { |
jiangli@3741 | 297 | if (b) { |
jiangli@3741 | 298 | _misc_flags |= _misc_has_nonstatic_fields; |
jiangli@3741 | 299 | } else { |
jiangli@3741 | 300 | _misc_flags &= ~_misc_has_nonstatic_fields; |
jiangli@3741 | 301 | } |
jiangli@3741 | 302 | } |
coleenp@548 | 303 | |
duke@435 | 304 | // field sizes |
duke@435 | 305 | int nonstatic_field_size() const { return _nonstatic_field_size; } |
duke@435 | 306 | void set_nonstatic_field_size(int size) { _nonstatic_field_size = size; } |
duke@435 | 307 | |
duke@435 | 308 | int static_field_size() const { return _static_field_size; } |
duke@435 | 309 | void set_static_field_size(int size) { _static_field_size = size; } |
duke@435 | 310 | |
jiangli@3373 | 311 | int static_oop_field_count() const { return (int)_static_oop_field_count; } |
jiangli@3373 | 312 | void set_static_oop_field_count(u2 size) { _static_oop_field_count = size; } |
duke@435 | 313 | |
duke@435 | 314 | // Java vtable |
duke@435 | 315 | int vtable_length() const { return _vtable_len; } |
duke@435 | 316 | void set_vtable_length(int len) { _vtable_len = len; } |
duke@435 | 317 | |
duke@435 | 318 | // Java itable |
duke@435 | 319 | int itable_length() const { return _itable_len; } |
duke@435 | 320 | void set_itable_length(int len) { _itable_len = len; } |
duke@435 | 321 | |
duke@435 | 322 | // array klasses |
duke@435 | 323 | klassOop array_klasses() const { return _array_klasses; } |
duke@435 | 324 | void set_array_klasses(klassOop k) { oop_store_without_check((oop*) &_array_klasses, (oop) k); } |
duke@435 | 325 | |
duke@435 | 326 | // methods |
duke@435 | 327 | objArrayOop methods() const { return _methods; } |
duke@435 | 328 | void set_methods(objArrayOop a) { oop_store_without_check((oop*) &_methods, (oop) a); } |
duke@435 | 329 | methodOop method_with_idnum(int idnum); |
duke@435 | 330 | |
duke@435 | 331 | // method ordering |
duke@435 | 332 | typeArrayOop method_ordering() const { return _method_ordering; } |
duke@435 | 333 | void set_method_ordering(typeArrayOop m) { oop_store_without_check((oop*) &_method_ordering, (oop) m); } |
duke@435 | 334 | |
duke@435 | 335 | // interfaces |
duke@435 | 336 | objArrayOop local_interfaces() const { return _local_interfaces; } |
duke@435 | 337 | void set_local_interfaces(objArrayOop a) { oop_store_without_check((oop*) &_local_interfaces, (oop) a); } |
duke@435 | 338 | objArrayOop transitive_interfaces() const { return _transitive_interfaces; } |
duke@435 | 339 | void set_transitive_interfaces(objArrayOop a) { oop_store_without_check((oop*) &_transitive_interfaces, (oop) a); } |
duke@435 | 340 | |
never@3137 | 341 | private: |
never@3137 | 342 | friend class fieldDescriptor; |
never@3137 | 343 | FieldInfo* field(int index) const { return FieldInfo::from_field_array(_fields, index); } |
never@3137 | 344 | |
never@3137 | 345 | public: |
never@3137 | 346 | int field_offset (int index) const { return field(index)->offset(); } |
never@3137 | 347 | int field_access_flags(int index) const { return field(index)->access_flags(); } |
never@3137 | 348 | Symbol* field_name (int index) const { return field(index)->name(constants()); } |
never@3137 | 349 | Symbol* field_signature (int index) const { return field(index)->signature(constants()); } |
never@3137 | 350 | |
never@3137 | 351 | // Number of Java declared fields |
jiangli@3373 | 352 | int java_fields_count() const { return (int)_java_fields_count; } |
never@3137 | 353 | |
never@3137 | 354 | // Number of fields including any injected fields |
jiangli@3743 | 355 | int all_fields_count() const { return _fields->length() / FieldInfo::field_slots; } |
duke@435 | 356 | |
duke@435 | 357 | typeArrayOop fields() const { return _fields; } |
never@3137 | 358 | |
jiangli@3373 | 359 | void set_fields(typeArrayOop f, u2 java_fields_count) { |
never@3137 | 360 | oop_store_without_check((oop*) &_fields, (oop) f); |
never@3137 | 361 | _java_fields_count = java_fields_count; |
duke@435 | 362 | } |
duke@435 | 363 | |
duke@435 | 364 | // inner classes |
duke@435 | 365 | typeArrayOop inner_classes() const { return _inner_classes; } |
duke@435 | 366 | void set_inner_classes(typeArrayOop f) { oop_store_without_check((oop*) &_inner_classes, (oop) f); } |
duke@435 | 367 | |
duke@435 | 368 | enum InnerClassAttributeOffset { |
duke@435 | 369 | // From http://mirror.eng/products/jdk/1.1/docs/guide/innerclasses/spec/innerclasses.doc10.html#18814 |
duke@435 | 370 | inner_class_inner_class_info_offset = 0, |
duke@435 | 371 | inner_class_outer_class_info_offset = 1, |
duke@435 | 372 | inner_class_inner_name_offset = 2, |
duke@435 | 373 | inner_class_access_flags_offset = 3, |
duke@435 | 374 | inner_class_next_offset = 4 |
duke@435 | 375 | }; |
duke@435 | 376 | |
jiangli@3670 | 377 | enum EnclosingMethodAttributeOffset { |
jiangli@3670 | 378 | enclosing_method_class_index_offset = 0, |
jiangli@3670 | 379 | enclosing_method_method_index_offset = 1, |
jiangli@3670 | 380 | enclosing_method_attribute_size = 2 |
jiangli@3670 | 381 | }; |
jiangli@3670 | 382 | |
acorn@1087 | 383 | // method override check |
coleenp@2497 | 384 | bool is_override(methodHandle super_method, Handle targetclassloader, Symbol* targetclassname, TRAPS); |
acorn@1087 | 385 | |
duke@435 | 386 | // package |
duke@435 | 387 | bool is_same_class_package(klassOop class2); |
coleenp@2497 | 388 | bool is_same_class_package(oop classloader2, Symbol* classname2); |
coleenp@2497 | 389 | static bool is_same_class_package(oop class_loader1, Symbol* class_name1, oop class_loader2, Symbol* class_name2); |
duke@435 | 390 | |
jrose@1100 | 391 | // find an enclosing class (defined where original code was, in jvm.cpp!) |
xlu@1561 | 392 | klassOop compute_enclosing_class(bool* inner_is_member, TRAPS) { |
jrose@1100 | 393 | instanceKlassHandle self(THREAD, this->as_klassOop()); |
xlu@1561 | 394 | return compute_enclosing_class_impl(self, inner_is_member, THREAD); |
jrose@1100 | 395 | } |
jrose@1100 | 396 | static klassOop compute_enclosing_class_impl(instanceKlassHandle self, |
xlu@1561 | 397 | bool* inner_is_member, TRAPS); |
jrose@1100 | 398 | |
jrose@1100 | 399 | // tell if two classes have the same enclosing class (at package level) |
jrose@1100 | 400 | bool is_same_package_member(klassOop class2, TRAPS) { |
jrose@1100 | 401 | instanceKlassHandle self(THREAD, this->as_klassOop()); |
jrose@1100 | 402 | return is_same_package_member_impl(self, class2, THREAD); |
jrose@1100 | 403 | } |
jrose@1100 | 404 | static bool is_same_package_member_impl(instanceKlassHandle self, |
jrose@1100 | 405 | klassOop class2, TRAPS); |
jrose@1100 | 406 | |
duke@435 | 407 | // initialization state |
duke@435 | 408 | bool is_loaded() const { return _init_state >= loaded; } |
duke@435 | 409 | bool is_linked() const { return _init_state >= linked; } |
duke@435 | 410 | bool is_initialized() const { return _init_state == fully_initialized; } |
duke@435 | 411 | bool is_not_initialized() const { return _init_state < being_initialized; } |
duke@435 | 412 | bool is_being_initialized() const { return _init_state == being_initialized; } |
duke@435 | 413 | bool is_in_error_state() const { return _init_state == initialization_error; } |
duke@435 | 414 | bool is_reentrant_initialization(Thread *thread) { return thread == _init_thread; } |
coleenp@3368 | 415 | ClassState init_state() { return (ClassState)_init_state; } |
jiangli@3741 | 416 | bool is_rewritten() const { return (_misc_flags & _misc_rewritten) != 0; } |
acorn@1408 | 417 | |
acorn@1408 | 418 | // defineClass specified verification |
jiangli@3741 | 419 | bool should_verify_class() const { |
jiangli@3741 | 420 | return (_misc_flags & _misc_should_verify_class) != 0; |
jiangli@3741 | 421 | } |
jiangli@3741 | 422 | void set_should_verify_class(bool value) { |
jiangli@3741 | 423 | if (value) { |
jiangli@3741 | 424 | _misc_flags |= _misc_should_verify_class; |
jiangli@3741 | 425 | } else { |
jiangli@3741 | 426 | _misc_flags &= ~_misc_should_verify_class; |
jiangli@3741 | 427 | } |
jiangli@3741 | 428 | } |
duke@435 | 429 | |
duke@435 | 430 | // marking |
dcubed@3401 | 431 | bool is_marked_dependent() const { return _is_marked_dependent; } |
dcubed@3401 | 432 | void set_is_marked_dependent(bool value) { _is_marked_dependent = value; } |
duke@435 | 433 | |
duke@435 | 434 | // initialization (virtuals from Klass) |
duke@435 | 435 | bool should_be_initialized() const; // means that initialize should be called |
duke@435 | 436 | void initialize(TRAPS); |
duke@435 | 437 | void link_class(TRAPS); |
duke@435 | 438 | bool link_class_or_fail(TRAPS); // returns false on failure |
duke@435 | 439 | void unlink_class(); |
duke@435 | 440 | void rewrite_class(TRAPS); |
coleenp@2945 | 441 | void relocate_and_link_methods(TRAPS); |
duke@435 | 442 | methodOop class_initializer(); |
duke@435 | 443 | |
duke@435 | 444 | // set the class to initialized if no static initializer is present |
duke@435 | 445 | void eager_initialize(Thread *thread); |
duke@435 | 446 | |
duke@435 | 447 | // reference type |
jiangli@3526 | 448 | ReferenceType reference_type() const { return (ReferenceType)_reference_type; } |
jiangli@3526 | 449 | void set_reference_type(ReferenceType t) { |
jiangli@3526 | 450 | assert(t == (u1)t, "overflow"); |
jiangli@3526 | 451 | _reference_type = (u1)t; |
jiangli@3526 | 452 | } |
duke@435 | 453 | |
stefank@3391 | 454 | static ByteSize reference_type_offset() { return in_ByteSize(sizeof(klassOopDesc) + offset_of(instanceKlass, _reference_type)); } |
johnc@2781 | 455 | |
duke@435 | 456 | // find local field, returns true if found |
coleenp@2497 | 457 | bool find_local_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const; |
duke@435 | 458 | // find field in direct superinterfaces, returns the interface in which the field is defined |
coleenp@2497 | 459 | klassOop find_interface_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const; |
duke@435 | 460 | // find field according to JVM spec 5.4.3.2, returns the klass in which the field is defined |
coleenp@2497 | 461 | klassOop find_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const; |
duke@435 | 462 | // find instance or static fields according to JVM spec 5.4.3.2, returns the klass in which the field is defined |
coleenp@2497 | 463 | klassOop find_field(Symbol* name, Symbol* sig, bool is_static, fieldDescriptor* fd) const; |
duke@435 | 464 | |
duke@435 | 465 | // find a non-static or static field given its offset within the class. |
duke@435 | 466 | bool contains_field_offset(int offset) { |
coleenp@548 | 467 | return instanceOopDesc::contains_field_offset(offset, nonstatic_field_size()); |
duke@435 | 468 | } |
duke@435 | 469 | |
duke@435 | 470 | bool find_local_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const; |
duke@435 | 471 | bool find_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const; |
duke@435 | 472 | |
duke@435 | 473 | // find a local method (returns NULL if not found) |
coleenp@2497 | 474 | methodOop find_method(Symbol* name, Symbol* signature) const; |
coleenp@2497 | 475 | static methodOop find_method(objArrayOop methods, Symbol* name, Symbol* signature); |
duke@435 | 476 | |
duke@435 | 477 | // lookup operation (returns NULL if not found) |
coleenp@2497 | 478 | methodOop uncached_lookup_method(Symbol* name, Symbol* signature) const; |
duke@435 | 479 | |
duke@435 | 480 | // lookup a method in all the interfaces that this class implements |
duke@435 | 481 | // (returns NULL if not found) |
coleenp@2497 | 482 | methodOop lookup_method_in_all_interfaces(Symbol* name, Symbol* signature) const; |
duke@435 | 483 | |
duke@435 | 484 | // constant pool |
duke@435 | 485 | constantPoolOop constants() const { return _constants; } |
duke@435 | 486 | void set_constants(constantPoolOop c) { oop_store_without_check((oop*) &_constants, (oop) c); } |
duke@435 | 487 | |
duke@435 | 488 | // class loader |
duke@435 | 489 | oop class_loader() const { return _class_loader; } |
duke@435 | 490 | void set_class_loader(oop l) { oop_store((oop*) &_class_loader, l); } |
duke@435 | 491 | |
duke@435 | 492 | // protection domain |
duke@435 | 493 | oop protection_domain() { return _protection_domain; } |
duke@435 | 494 | void set_protection_domain(oop pd) { oop_store((oop*) &_protection_domain, pd); } |
duke@435 | 495 | |
jrose@866 | 496 | // host class |
jiangli@3741 | 497 | oop host_klass() const { |
jiangli@3741 | 498 | oop* hk = adr_host_klass(); |
jiangli@3741 | 499 | if (hk == NULL) { |
jiangli@3741 | 500 | return NULL; |
jiangli@3741 | 501 | } else { |
jiangli@3741 | 502 | return *hk; |
jiangli@3741 | 503 | } |
jiangli@3741 | 504 | } |
jiangli@3741 | 505 | void set_host_klass(oop host) { |
jiangli@3741 | 506 | assert(is_anonymous(), "not anonymous"); |
jiangli@3741 | 507 | oop* addr = adr_host_klass(); |
jiangli@3741 | 508 | assert(addr != NULL, "no reversed space"); |
jiangli@3741 | 509 | oop_store(addr, host); |
jiangli@3741 | 510 | } |
jiangli@3741 | 511 | bool is_anonymous() const { |
jiangli@3741 | 512 | return (_misc_flags & _misc_is_anonymous) != 0; |
jiangli@3741 | 513 | } |
jiangli@3741 | 514 | void set_is_anonymous(bool value) { |
jiangli@3741 | 515 | if (value) { |
jiangli@3741 | 516 | _misc_flags |= _misc_is_anonymous; |
jiangli@3741 | 517 | } else { |
jiangli@3741 | 518 | _misc_flags &= ~_misc_is_anonymous; |
jiangli@3741 | 519 | } |
jiangli@3741 | 520 | } |
jrose@866 | 521 | |
duke@435 | 522 | // signers |
duke@435 | 523 | objArrayOop signers() const { return _signers; } |
duke@435 | 524 | void set_signers(objArrayOop s) { oop_store((oop*) &_signers, oop(s)); } |
duke@435 | 525 | |
duke@435 | 526 | // source file name |
coleenp@2497 | 527 | Symbol* source_file_name() const { return _source_file_name; } |
coleenp@2497 | 528 | void set_source_file_name(Symbol* n); |
duke@435 | 529 | |
duke@435 | 530 | // minor and major version numbers of class file |
duke@435 | 531 | u2 minor_version() const { return _minor_version; } |
duke@435 | 532 | void set_minor_version(u2 minor_version) { _minor_version = minor_version; } |
duke@435 | 533 | u2 major_version() const { return _major_version; } |
duke@435 | 534 | void set_major_version(u2 major_version) { _major_version = major_version; } |
duke@435 | 535 | |
duke@435 | 536 | // source debug extension |
coleenp@2497 | 537 | Symbol* source_debug_extension() const { return _source_debug_extension; } |
coleenp@2497 | 538 | void set_source_debug_extension(Symbol* n); |
coleenp@2497 | 539 | |
coleenp@2497 | 540 | // symbol unloading support (refcount already added) |
coleenp@2497 | 541 | Symbol* array_name() { return _array_name; } |
coleenp@2497 | 542 | void set_array_name(Symbol* name) { assert(_array_name == NULL, "name already created"); _array_name = name; } |
duke@435 | 543 | |
duke@435 | 544 | // nonstatic oop-map blocks |
jcoomes@1374 | 545 | static int nonstatic_oop_map_size(unsigned int oop_map_count) { |
jcoomes@1373 | 546 | return oop_map_count * OopMapBlock::size_in_words(); |
jcoomes@1373 | 547 | } |
jcoomes@1374 | 548 | unsigned int nonstatic_oop_map_count() const { |
jcoomes@1373 | 549 | return _nonstatic_oop_map_size / OopMapBlock::size_in_words(); |
jcoomes@1373 | 550 | } |
jcoomes@1373 | 551 | int nonstatic_oop_map_size() const { return _nonstatic_oop_map_size; } |
jcoomes@1373 | 552 | void set_nonstatic_oop_map_size(int words) { |
jcoomes@1373 | 553 | _nonstatic_oop_map_size = words; |
jcoomes@1373 | 554 | } |
duke@435 | 555 | |
duke@435 | 556 | // RedefineClasses() support for previous versions: |
duke@435 | 557 | void add_previous_version(instanceKlassHandle ikh, BitMap *emcp_methods, |
duke@435 | 558 | int emcp_method_count); |
dcubed@1412 | 559 | // If the _previous_versions array is non-NULL, then this klass |
dcubed@1412 | 560 | // has been redefined at least once even if we aren't currently |
dcubed@1412 | 561 | // tracking a previous version. |
dcubed@1412 | 562 | bool has_been_redefined() const { return _previous_versions != NULL; } |
duke@435 | 563 | bool has_previous_version() const; |
duke@435 | 564 | void init_previous_versions() { |
duke@435 | 565 | _previous_versions = NULL; |
duke@435 | 566 | } |
duke@435 | 567 | GrowableArray<PreviousVersionNode *>* previous_versions() const { |
duke@435 | 568 | return _previous_versions; |
duke@435 | 569 | } |
duke@435 | 570 | |
duke@435 | 571 | // JVMTI: Support for caching a class file before it is modified by an agent that can do retransformation |
duke@435 | 572 | void set_cached_class_file(unsigned char *class_file_bytes, |
duke@435 | 573 | jint class_file_len) { _cached_class_file_len = class_file_len; |
duke@435 | 574 | _cached_class_file_bytes = class_file_bytes; } |
duke@435 | 575 | jint get_cached_class_file_len() { return _cached_class_file_len; } |
duke@435 | 576 | unsigned char * get_cached_class_file_bytes() { return _cached_class_file_bytes; } |
duke@435 | 577 | |
duke@435 | 578 | // JVMTI: Support for caching of field indices, types, and offsets |
duke@435 | 579 | void set_jvmti_cached_class_field_map(JvmtiCachedClassFieldMap* descriptor) { |
duke@435 | 580 | _jvmti_cached_class_field_map = descriptor; |
duke@435 | 581 | } |
duke@435 | 582 | JvmtiCachedClassFieldMap* jvmti_cached_class_field_map() const { |
duke@435 | 583 | return _jvmti_cached_class_field_map; |
duke@435 | 584 | } |
duke@435 | 585 | |
duke@435 | 586 | // for adding methods, constMethodOopDesc::UNSET_IDNUM means no more ids available |
duke@435 | 587 | inline u2 next_method_idnum(); |
duke@435 | 588 | void set_initial_method_idnum(u2 value) { _idnum_allocated_count = value; } |
duke@435 | 589 | |
duke@435 | 590 | // generics support |
coleenp@2497 | 591 | Symbol* generic_signature() const { return _generic_signature; } |
coleenp@2497 | 592 | void set_generic_signature(Symbol* sig) { _generic_signature = sig; } |
coleenp@2497 | 593 | |
jiangli@3670 | 594 | u2 enclosing_method_data(int offset); |
jiangli@3670 | 595 | u2 enclosing_method_class_index() { |
jiangli@3670 | 596 | return enclosing_method_data(enclosing_method_class_index_offset); |
jiangli@3670 | 597 | } |
jiangli@3670 | 598 | u2 enclosing_method_method_index() { |
jiangli@3670 | 599 | return enclosing_method_data(enclosing_method_method_index_offset); |
jiangli@3670 | 600 | } |
duke@435 | 601 | void set_enclosing_method_indices(u2 class_index, |
jiangli@3670 | 602 | u2 method_index); |
duke@435 | 603 | |
duke@435 | 604 | // jmethodID support |
dcubed@1412 | 605 | static jmethodID get_jmethod_id(instanceKlassHandle ik_h, |
dcubed@1412 | 606 | methodHandle method_h); |
dcubed@1412 | 607 | static jmethodID get_jmethod_id_fetch_or_update(instanceKlassHandle ik_h, |
dcubed@1412 | 608 | size_t idnum, jmethodID new_id, jmethodID* new_jmeths, |
dcubed@1412 | 609 | jmethodID* to_dealloc_id_p, |
dcubed@1412 | 610 | jmethodID** to_dealloc_jmeths_p); |
dcubed@1412 | 611 | static void get_jmethod_id_length_value(jmethodID* cache, size_t idnum, |
dcubed@1412 | 612 | size_t *length_p, jmethodID* id_p); |
duke@435 | 613 | jmethodID jmethod_id_or_null(methodOop method); |
duke@435 | 614 | |
duke@435 | 615 | // cached itable index support |
duke@435 | 616 | void set_cached_itable_index(size_t idnum, int index); |
duke@435 | 617 | int cached_itable_index(size_t idnum); |
duke@435 | 618 | |
duke@435 | 619 | // annotations support |
duke@435 | 620 | typeArrayOop class_annotations() const { return _class_annotations; } |
duke@435 | 621 | objArrayOop fields_annotations() const { return _fields_annotations; } |
duke@435 | 622 | objArrayOop methods_annotations() const { return _methods_annotations; } |
duke@435 | 623 | objArrayOop methods_parameter_annotations() const { return _methods_parameter_annotations; } |
duke@435 | 624 | objArrayOop methods_default_annotations() const { return _methods_default_annotations; } |
duke@435 | 625 | void set_class_annotations(typeArrayOop md) { oop_store_without_check((oop*)&_class_annotations, (oop)md); } |
duke@435 | 626 | void set_fields_annotations(objArrayOop md) { set_annotations(md, &_fields_annotations); } |
duke@435 | 627 | void set_methods_annotations(objArrayOop md) { set_annotations(md, &_methods_annotations); } |
duke@435 | 628 | void set_methods_parameter_annotations(objArrayOop md) { set_annotations(md, &_methods_parameter_annotations); } |
duke@435 | 629 | void set_methods_default_annotations(objArrayOop md) { set_annotations(md, &_methods_default_annotations); } |
duke@435 | 630 | typeArrayOop get_method_annotations_of(int idnum) |
duke@435 | 631 | { return get_method_annotations_from(idnum, _methods_annotations); } |
duke@435 | 632 | typeArrayOop get_method_parameter_annotations_of(int idnum) |
duke@435 | 633 | { return get_method_annotations_from(idnum, _methods_parameter_annotations); } |
duke@435 | 634 | typeArrayOop get_method_default_annotations_of(int idnum) |
duke@435 | 635 | { return get_method_annotations_from(idnum, _methods_default_annotations); } |
duke@435 | 636 | void set_method_annotations_of(int idnum, typeArrayOop anno) |
duke@435 | 637 | { set_methods_annotations_of(idnum, anno, &_methods_annotations); } |
duke@435 | 638 | void set_method_parameter_annotations_of(int idnum, typeArrayOop anno) |
stefank@3488 | 639 | { set_methods_annotations_of(idnum, anno, &_methods_parameter_annotations); } |
duke@435 | 640 | void set_method_default_annotations_of(int idnum, typeArrayOop anno) |
stefank@3488 | 641 | { set_methods_annotations_of(idnum, anno, &_methods_default_annotations); } |
duke@435 | 642 | |
duke@435 | 643 | // allocation |
duke@435 | 644 | DEFINE_ALLOCATE_PERMANENT(instanceKlass); |
duke@435 | 645 | instanceOop allocate_instance(TRAPS); |
duke@435 | 646 | instanceOop allocate_permanent_instance(TRAPS); |
duke@435 | 647 | |
duke@435 | 648 | // additional member function to return a handle |
duke@435 | 649 | instanceHandle allocate_instance_handle(TRAPS) { return instanceHandle(THREAD, allocate_instance(THREAD)); } |
duke@435 | 650 | |
duke@435 | 651 | objArrayOop allocate_objArray(int n, int length, TRAPS); |
duke@435 | 652 | // Helper function |
duke@435 | 653 | static instanceOop register_finalizer(instanceOop i, TRAPS); |
duke@435 | 654 | |
duke@435 | 655 | // Check whether reflection/jni/jvm code is allowed to instantiate this class; |
duke@435 | 656 | // if not, throw either an Error or an Exception. |
duke@435 | 657 | virtual void check_valid_for_instantiation(bool throwError, TRAPS); |
duke@435 | 658 | |
duke@435 | 659 | // initialization |
duke@435 | 660 | void call_class_initializer(TRAPS); |
duke@435 | 661 | void set_initialization_state_and_notify(ClassState state, TRAPS); |
duke@435 | 662 | |
duke@435 | 663 | // OopMapCache support |
duke@435 | 664 | OopMapCache* oop_map_cache() { return _oop_map_cache; } |
duke@435 | 665 | void set_oop_map_cache(OopMapCache *cache) { _oop_map_cache = cache; } |
duke@435 | 666 | void mask_for(methodHandle method, int bci, InterpreterOopMap* entry); |
duke@435 | 667 | |
duke@435 | 668 | // JNI identifier support (for static fields - for jni performance) |
duke@435 | 669 | JNIid* jni_ids() { return _jni_ids; } |
duke@435 | 670 | void set_jni_ids(JNIid* ids) { _jni_ids = ids; } |
duke@435 | 671 | JNIid* jni_id_for(int offset); |
duke@435 | 672 | |
duke@435 | 673 | // maintenance of deoptimization dependencies |
duke@435 | 674 | int mark_dependent_nmethods(DepChange& changes); |
duke@435 | 675 | void add_dependent_nmethod(nmethod* nm); |
duke@435 | 676 | void remove_dependent_nmethod(nmethod* nm); |
duke@435 | 677 | |
duke@435 | 678 | // On-stack replacement support |
duke@435 | 679 | nmethod* osr_nmethods_head() const { return _osr_nmethods_head; }; |
duke@435 | 680 | void set_osr_nmethods_head(nmethod* h) { _osr_nmethods_head = h; }; |
duke@435 | 681 | void add_osr_nmethod(nmethod* n); |
duke@435 | 682 | void remove_osr_nmethod(nmethod* n); |
iveresov@2138 | 683 | nmethod* lookup_osr_nmethod(const methodOop m, int bci, int level, bool match_level) const; |
duke@435 | 684 | |
duke@435 | 685 | // Breakpoint support (see methods on methodOop for details) |
duke@435 | 686 | BreakpointInfo* breakpoints() const { return _breakpoints; }; |
duke@435 | 687 | void set_breakpoints(BreakpointInfo* bps) { _breakpoints = bps; }; |
duke@435 | 688 | |
duke@435 | 689 | // support for stub routines |
stefank@3391 | 690 | static ByteSize init_state_offset() { return in_ByteSize(sizeof(klassOopDesc) + offset_of(instanceKlass, _init_state)); } |
rbackman@3709 | 691 | TRACE_DEFINE_OFFSET; |
stefank@3391 | 692 | static ByteSize init_thread_offset() { return in_ByteSize(sizeof(klassOopDesc) + offset_of(instanceKlass, _init_thread)); } |
duke@435 | 693 | |
duke@435 | 694 | // subclass/subinterface checks |
duke@435 | 695 | bool implements_interface(klassOop k) const; |
duke@435 | 696 | |
jiangli@3701 | 697 | // Access to the implementor of an interface. |
jiangli@3701 | 698 | klassOop implementor() const |
jiangli@3701 | 699 | { |
jiangli@3741 | 700 | klassOop* k = (klassOop*)adr_implementor(); |
jiangli@3701 | 701 | if (k == NULL) { |
jiangli@3701 | 702 | return NULL; |
jiangli@3701 | 703 | } else { |
jiangli@3701 | 704 | return *k; |
jiangli@3701 | 705 | } |
duke@435 | 706 | } |
jiangli@3701 | 707 | |
jiangli@3701 | 708 | void set_implementor(klassOop k) { |
jiangli@3701 | 709 | assert(is_interface(), "not interface"); |
jiangli@3741 | 710 | oop* addr = adr_implementor(); |
jiangli@3701 | 711 | oop_store_without_check(addr, k); |
jiangli@3701 | 712 | } |
jiangli@3701 | 713 | |
jiangli@3701 | 714 | int nof_implementors() const { |
jiangli@3701 | 715 | klassOop k = implementor(); |
jiangli@3701 | 716 | if (k == NULL) { |
jiangli@3701 | 717 | return 0; |
jiangli@3701 | 718 | } else if (k != this->as_klassOop()) { |
jiangli@3701 | 719 | return 1; |
jiangli@3701 | 720 | } else { |
jiangli@3701 | 721 | return 2; |
jiangli@3701 | 722 | } |
jiangli@3701 | 723 | } |
jiangli@3701 | 724 | |
duke@435 | 725 | void add_implementor(klassOop k); // k is a new class that implements this interface |
duke@435 | 726 | void init_implementor(); // initialize |
duke@435 | 727 | |
duke@435 | 728 | // link this class into the implementors list of every interface it implements |
duke@435 | 729 | void process_interfaces(Thread *thread); |
duke@435 | 730 | |
duke@435 | 731 | // virtual operations from Klass |
duke@435 | 732 | bool is_leaf_class() const { return _subklass == NULL; } |
duke@435 | 733 | objArrayOop compute_secondary_supers(int num_extra_slots, TRAPS); |
duke@435 | 734 | bool compute_is_subtype_of(klassOop k); |
duke@435 | 735 | bool can_be_primary_super_slow() const; |
duke@435 | 736 | klassOop java_super() const { return super(); } |
duke@435 | 737 | int oop_size(oop obj) const { return size_helper(); } |
duke@435 | 738 | int klass_oop_size() const { return object_size(); } |
duke@435 | 739 | bool oop_is_instance_slow() const { return true; } |
duke@435 | 740 | |
duke@435 | 741 | // Iterators |
duke@435 | 742 | void do_local_static_fields(FieldClosure* cl); |
duke@435 | 743 | void do_nonstatic_fields(FieldClosure* cl); // including inherited fields |
duke@435 | 744 | void do_local_static_fields(void f(fieldDescriptor*, TRAPS), TRAPS); |
duke@435 | 745 | |
duke@435 | 746 | void methods_do(void f(methodOop method)); |
duke@435 | 747 | void array_klasses_do(void f(klassOop k)); |
duke@435 | 748 | void with_array_klasses_do(void f(klassOop k)); |
duke@435 | 749 | bool super_types_do(SuperTypeClosure* blk); |
duke@435 | 750 | |
duke@435 | 751 | // Casting from klassOop |
duke@435 | 752 | static instanceKlass* cast(klassOop k) { |
never@2658 | 753 | assert(k->is_klass(), "must be"); |
duke@435 | 754 | Klass* kp = k->klass_part(); |
duke@435 | 755 | assert(kp->null_vtbl() || kp->oop_is_instance_slow(), "cast to instanceKlass"); |
duke@435 | 756 | return (instanceKlass*) kp; |
duke@435 | 757 | } |
duke@435 | 758 | |
duke@435 | 759 | // Sizing (in words) |
duke@435 | 760 | static int header_size() { return align_object_offset(oopDesc::header_size() + sizeof(instanceKlass)/HeapWordSize); } |
jiangli@3701 | 761 | |
jiangli@3701 | 762 | int object_size() const |
jiangli@3701 | 763 | { |
jiangli@3701 | 764 | return object_size(align_object_offset(vtable_length()) + |
jiangli@3701 | 765 | align_object_offset(itable_length()) + |
jiangli@3741 | 766 | ((is_interface() || is_anonymous()) ? |
jiangli@3741 | 767 | align_object_offset(nonstatic_oop_map_size()) : |
jiangli@3741 | 768 | nonstatic_oop_map_size()) + |
jiangli@3741 | 769 | (is_interface() ? (int)sizeof(klassOop)/HeapWordSize : 0) + |
jiangli@3741 | 770 | (is_anonymous() ? (int)sizeof(klassOop)/HeapWordSize : 0)); |
jiangli@3701 | 771 | } |
duke@435 | 772 | static int vtable_start_offset() { return header_size(); } |
duke@435 | 773 | static int vtable_length_offset() { return oopDesc::header_size() + offset_of(instanceKlass, _vtable_len) / HeapWordSize; } |
duke@435 | 774 | static int object_size(int extra) { return align_object_size(header_size() + extra); } |
duke@435 | 775 | |
duke@435 | 776 | intptr_t* start_of_vtable() const { return ((intptr_t*)as_klassOop()) + vtable_start_offset(); } |
duke@435 | 777 | intptr_t* start_of_itable() const { return start_of_vtable() + align_object_offset(vtable_length()); } |
duke@435 | 778 | int itable_offset_in_words() const { return start_of_itable() - (intptr_t*)as_klassOop(); } |
duke@435 | 779 | |
duke@435 | 780 | intptr_t* end_of_itable() const { return start_of_itable() + itable_length(); } |
duke@435 | 781 | |
never@2658 | 782 | address static_field_addr(int offset); |
coleenp@548 | 783 | |
coleenp@548 | 784 | OopMapBlock* start_of_nonstatic_oop_maps() const { |
never@2658 | 785 | return (OopMapBlock*)(start_of_itable() + align_object_offset(itable_length())); |
coleenp@548 | 786 | } |
duke@435 | 787 | |
jiangli@3741 | 788 | oop* adr_implementor() const { |
jiangli@3701 | 789 | if (is_interface()) { |
jiangli@3741 | 790 | return (oop*)(start_of_nonstatic_oop_maps() + |
jiangli@3741 | 791 | nonstatic_oop_map_count()); |
jiangli@3701 | 792 | } else { |
jiangli@3701 | 793 | return NULL; |
jiangli@3701 | 794 | } |
jiangli@3701 | 795 | }; |
jiangli@3701 | 796 | |
jiangli@3741 | 797 | oop* adr_host_klass() const { |
jiangli@3741 | 798 | if (is_anonymous()) { |
jiangli@3741 | 799 | oop* adr_impl = adr_implementor(); |
jiangli@3741 | 800 | if (adr_impl != NULL) { |
jiangli@3741 | 801 | return adr_impl + 1; |
jiangli@3741 | 802 | } else { |
jiangli@3741 | 803 | return (oop*)(start_of_nonstatic_oop_maps() + |
jiangli@3741 | 804 | nonstatic_oop_map_count()); |
jiangli@3741 | 805 | } |
jiangli@3741 | 806 | } else { |
jiangli@3741 | 807 | return NULL; |
jiangli@3741 | 808 | } |
jiangli@3741 | 809 | } |
jiangli@3741 | 810 | |
duke@435 | 811 | // Allocation profiling support |
duke@435 | 812 | juint alloc_size() const { return _alloc_count * size_helper(); } |
duke@435 | 813 | void set_alloc_size(juint n) {} |
duke@435 | 814 | |
duke@435 | 815 | // Use this to return the size of an instance in heap words: |
duke@435 | 816 | int size_helper() const { |
duke@435 | 817 | return layout_helper_to_size_helper(layout_helper()); |
duke@435 | 818 | } |
duke@435 | 819 | |
duke@435 | 820 | // This bit is initialized in classFileParser.cpp. |
duke@435 | 821 | // It is false under any of the following conditions: |
duke@435 | 822 | // - the class is abstract (including any interface) |
duke@435 | 823 | // - the class has a finalizer (if !RegisterFinalizersAtInit) |
duke@435 | 824 | // - the class size is larger than FastAllocateSizeLimit |
duke@435 | 825 | // - the class is java/lang/Class, which cannot be allocated directly |
duke@435 | 826 | bool can_be_fastpath_allocated() const { |
duke@435 | 827 | return !layout_helper_needs_slow_path(layout_helper()); |
duke@435 | 828 | } |
duke@435 | 829 | |
duke@435 | 830 | // Java vtable/itable |
duke@435 | 831 | klassVtable* vtable() const; // return new klassVtable wrapper |
duke@435 | 832 | inline methodOop method_at_vtable(int index); |
duke@435 | 833 | klassItable* itable() const; // return new klassItable wrapper |
duke@435 | 834 | methodOop method_at_itable(klassOop holder, int index, TRAPS); |
duke@435 | 835 | |
duke@435 | 836 | // Garbage collection |
duke@435 | 837 | void oop_follow_contents(oop obj); |
duke@435 | 838 | int oop_adjust_pointers(oop obj); |
duke@435 | 839 | bool object_is_parsable() const { return _init_state != unparsable_by_gc; } |
duke@435 | 840 | // Value of _init_state must be zero (unparsable_by_gc) when klass field is set. |
duke@435 | 841 | |
duke@435 | 842 | void follow_weak_klass_links( |
duke@435 | 843 | BoolObjectClosure* is_alive, OopClosure* keep_alive); |
duke@435 | 844 | void release_C_heap_structures(); |
duke@435 | 845 | |
duke@435 | 846 | // Parallel Scavenge and Parallel Old |
duke@435 | 847 | PARALLEL_GC_DECLS |
duke@435 | 848 | |
duke@435 | 849 | // Naming |
jrose@1474 | 850 | const char* signature_name() const; |
duke@435 | 851 | |
duke@435 | 852 | // Iterators |
duke@435 | 853 | int oop_oop_iterate(oop obj, OopClosure* blk) { |
duke@435 | 854 | return oop_oop_iterate_v(obj, blk); |
duke@435 | 855 | } |
duke@435 | 856 | |
duke@435 | 857 | int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) { |
duke@435 | 858 | return oop_oop_iterate_v_m(obj, blk, mr); |
duke@435 | 859 | } |
duke@435 | 860 | |
ysr@777 | 861 | #define InstanceKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix) \ |
ysr@777 | 862 | int oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk); \ |
ysr@777 | 863 | int oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk, \ |
duke@435 | 864 | MemRegion mr); |
duke@435 | 865 | |
duke@435 | 866 | ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DECL) |
ysr@777 | 867 | ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DECL) |
ysr@777 | 868 | |
ysr@777 | 869 | #ifndef SERIALGC |
ysr@777 | 870 | #define InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DECL(OopClosureType, nv_suffix) \ |
ysr@777 | 871 | int oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* blk); |
ysr@777 | 872 | |
ysr@777 | 873 | ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DECL) |
ysr@777 | 874 | ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DECL) |
ysr@777 | 875 | #endif // !SERIALGC |
duke@435 | 876 | |
duke@435 | 877 | private: |
duke@435 | 878 | // initialization state |
duke@435 | 879 | #ifdef ASSERT |
duke@435 | 880 | void set_init_state(ClassState state); |
duke@435 | 881 | #else |
coleenp@3368 | 882 | void set_init_state(ClassState state) { _init_state = (u1)state; } |
duke@435 | 883 | #endif |
jiangli@3741 | 884 | void set_rewritten() { _misc_flags |= _misc_rewritten; } |
duke@435 | 885 | void set_init_thread(Thread *thread) { _init_thread = thread; } |
duke@435 | 886 | |
duke@435 | 887 | u2 idnum_allocated_count() const { return _idnum_allocated_count; } |
dcubed@1412 | 888 | // The RedefineClasses() API can cause new method idnums to be needed |
dcubed@1412 | 889 | // which will cause the caches to grow. Safety requires different |
dcubed@1412 | 890 | // cache management logic if the caches can grow instead of just |
dcubed@1412 | 891 | // going from NULL to non-NULL. |
dcubed@1412 | 892 | bool idnum_can_increment() const { return has_been_redefined(); } |
duke@435 | 893 | jmethodID* methods_jmethod_ids_acquire() const |
duke@435 | 894 | { return (jmethodID*)OrderAccess::load_ptr_acquire(&_methods_jmethod_ids); } |
duke@435 | 895 | void release_set_methods_jmethod_ids(jmethodID* jmeths) |
duke@435 | 896 | { OrderAccess::release_store_ptr(&_methods_jmethod_ids, jmeths); } |
duke@435 | 897 | |
duke@435 | 898 | int* methods_cached_itable_indices_acquire() const |
duke@435 | 899 | { return (int*)OrderAccess::load_ptr_acquire(&_methods_cached_itable_indices); } |
duke@435 | 900 | void release_set_methods_cached_itable_indices(int* indices) |
duke@435 | 901 | { OrderAccess::release_store_ptr(&_methods_cached_itable_indices, indices); } |
duke@435 | 902 | |
duke@435 | 903 | inline typeArrayOop get_method_annotations_from(int idnum, objArrayOop annos); |
duke@435 | 904 | void set_annotations(objArrayOop md, objArrayOop* md_p) { oop_store_without_check((oop*)md_p, (oop)md); } |
duke@435 | 905 | void set_methods_annotations_of(int idnum, typeArrayOop anno, objArrayOop* md_p); |
duke@435 | 906 | |
duke@435 | 907 | // Offsets for memory management |
duke@435 | 908 | oop* adr_array_klasses() const { return (oop*)&this->_array_klasses;} |
duke@435 | 909 | oop* adr_methods() const { return (oop*)&this->_methods;} |
duke@435 | 910 | oop* adr_method_ordering() const { return (oop*)&this->_method_ordering;} |
duke@435 | 911 | oop* adr_local_interfaces() const { return (oop*)&this->_local_interfaces;} |
duke@435 | 912 | oop* adr_transitive_interfaces() const { return (oop*)&this->_transitive_interfaces;} |
duke@435 | 913 | oop* adr_fields() const { return (oop*)&this->_fields;} |
duke@435 | 914 | oop* adr_constants() const { return (oop*)&this->_constants;} |
duke@435 | 915 | oop* adr_class_loader() const { return (oop*)&this->_class_loader;} |
duke@435 | 916 | oop* adr_protection_domain() const { return (oop*)&this->_protection_domain;} |
duke@435 | 917 | oop* adr_signers() const { return (oop*)&this->_signers;} |
duke@435 | 918 | oop* adr_inner_classes() const { return (oop*)&this->_inner_classes;} |
duke@435 | 919 | oop* adr_methods_jmethod_ids() const { return (oop*)&this->_methods_jmethod_ids;} |
duke@435 | 920 | oop* adr_methods_cached_itable_indices() const { return (oop*)&this->_methods_cached_itable_indices;} |
duke@435 | 921 | oop* adr_class_annotations() const { return (oop*)&this->_class_annotations;} |
duke@435 | 922 | oop* adr_fields_annotations() const { return (oop*)&this->_fields_annotations;} |
duke@435 | 923 | oop* adr_methods_annotations() const { return (oop*)&this->_methods_annotations;} |
duke@435 | 924 | oop* adr_methods_parameter_annotations() const { return (oop*)&this->_methods_parameter_annotations;} |
duke@435 | 925 | oop* adr_methods_default_annotations() const { return (oop*)&this->_methods_default_annotations;} |
duke@435 | 926 | |
duke@435 | 927 | // Static methods that are used to implement member methods where an exposed this pointer |
duke@435 | 928 | // is needed due to possible GCs |
duke@435 | 929 | static bool link_class_impl (instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS); |
duke@435 | 930 | static bool verify_code (instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS); |
duke@435 | 931 | static void initialize_impl (instanceKlassHandle this_oop, TRAPS); |
duke@435 | 932 | static void eager_initialize_impl (instanceKlassHandle this_oop); |
duke@435 | 933 | static void set_initialization_state_and_notify_impl (instanceKlassHandle this_oop, ClassState state, TRAPS); |
duke@435 | 934 | static void call_class_initializer_impl (instanceKlassHandle this_oop, TRAPS); |
duke@435 | 935 | static klassOop array_klass_impl (instanceKlassHandle this_oop, bool or_null, int n, TRAPS); |
duke@435 | 936 | static void do_local_static_fields_impl (instanceKlassHandle this_oop, void f(fieldDescriptor* fd, TRAPS), TRAPS); |
duke@435 | 937 | /* jni_id_for_impl for jfieldID only */ |
duke@435 | 938 | static JNIid* jni_id_for_impl (instanceKlassHandle this_oop, int offset); |
duke@435 | 939 | |
duke@435 | 940 | // Returns the array class for the n'th dimension |
duke@435 | 941 | klassOop array_klass_impl(bool or_null, int n, TRAPS); |
duke@435 | 942 | |
duke@435 | 943 | // Returns the array class with this class as element type |
duke@435 | 944 | klassOop array_klass_impl(bool or_null, TRAPS); |
duke@435 | 945 | |
duke@435 | 946 | public: |
duke@435 | 947 | // sharing support |
duke@435 | 948 | virtual void remove_unshareable_info(); |
coleenp@2497 | 949 | virtual void shared_symbols_iterate(SymbolClosure* closure); |
duke@435 | 950 | |
duke@435 | 951 | // jvm support |
duke@435 | 952 | jint compute_modifier_flags(TRAPS) const; |
duke@435 | 953 | |
duke@435 | 954 | public: |
duke@435 | 955 | // JVMTI support |
duke@435 | 956 | jint jvmti_class_status() const; |
duke@435 | 957 | |
duke@435 | 958 | public: |
duke@435 | 959 | // Printing |
jrose@1590 | 960 | void oop_print_value_on(oop obj, outputStream* st); |
jrose@1590 | 961 | #ifndef PRODUCT |
duke@435 | 962 | void oop_print_on (oop obj, outputStream* st); |
duke@435 | 963 | |
duke@435 | 964 | void print_dependent_nmethods(bool verbose = false); |
duke@435 | 965 | bool is_dependent_nmethod(nmethod* nm); |
duke@435 | 966 | #endif |
duke@435 | 967 | |
duke@435 | 968 | // Verification |
duke@435 | 969 | const char* internal_name() const; |
duke@435 | 970 | void oop_verify_on(oop obj, outputStream* st); |
duke@435 | 971 | }; |
duke@435 | 972 | |
duke@435 | 973 | inline methodOop instanceKlass::method_at_vtable(int index) { |
duke@435 | 974 | #ifndef PRODUCT |
duke@435 | 975 | assert(index >= 0, "valid vtable index"); |
duke@435 | 976 | if (DebugVtables) { |
duke@435 | 977 | verify_vtable_index(index); |
duke@435 | 978 | } |
duke@435 | 979 | #endif |
duke@435 | 980 | vtableEntry* ve = (vtableEntry*)start_of_vtable(); |
duke@435 | 981 | return ve[index].method(); |
duke@435 | 982 | } |
duke@435 | 983 | |
duke@435 | 984 | inline typeArrayOop instanceKlass::get_method_annotations_from(int idnum, objArrayOop annos) { |
duke@435 | 985 | if (annos == NULL || annos->length() <= idnum) { |
duke@435 | 986 | return NULL; |
duke@435 | 987 | } |
duke@435 | 988 | return typeArrayOop(annos->obj_at(idnum)); |
duke@435 | 989 | } |
duke@435 | 990 | |
duke@435 | 991 | // for adding methods |
duke@435 | 992 | // UNSET_IDNUM return means no more ids available |
duke@435 | 993 | inline u2 instanceKlass::next_method_idnum() { |
duke@435 | 994 | if (_idnum_allocated_count == constMethodOopDesc::MAX_IDNUM) { |
duke@435 | 995 | return constMethodOopDesc::UNSET_IDNUM; // no more ids available |
duke@435 | 996 | } else { |
duke@435 | 997 | return _idnum_allocated_count++; |
duke@435 | 998 | } |
duke@435 | 999 | } |
duke@435 | 1000 | |
duke@435 | 1001 | |
duke@435 | 1002 | /* JNIid class for jfieldIDs only */ |
duke@435 | 1003 | class JNIid: public CHeapObj { |
duke@435 | 1004 | friend class VMStructs; |
duke@435 | 1005 | private: |
duke@435 | 1006 | klassOop _holder; |
duke@435 | 1007 | JNIid* _next; |
duke@435 | 1008 | int _offset; |
duke@435 | 1009 | #ifdef ASSERT |
duke@435 | 1010 | bool _is_static_field_id; |
duke@435 | 1011 | #endif |
duke@435 | 1012 | |
duke@435 | 1013 | public: |
duke@435 | 1014 | // Accessors |
duke@435 | 1015 | klassOop holder() const { return _holder; } |
duke@435 | 1016 | int offset() const { return _offset; } |
duke@435 | 1017 | JNIid* next() { return _next; } |
duke@435 | 1018 | // Constructor |
duke@435 | 1019 | JNIid(klassOop holder, int offset, JNIid* next); |
duke@435 | 1020 | // Identifier lookup |
duke@435 | 1021 | JNIid* find(int offset); |
duke@435 | 1022 | |
never@2658 | 1023 | bool find_local_field(fieldDescriptor* fd) { |
never@2658 | 1024 | return instanceKlass::cast(holder())->find_local_field_from_offset(offset(), true, fd); |
never@2658 | 1025 | } |
never@2658 | 1026 | |
duke@435 | 1027 | // Garbage collection support |
duke@435 | 1028 | oop* holder_addr() { return (oop*)&_holder; } |
duke@435 | 1029 | void oops_do(OopClosure* f); |
duke@435 | 1030 | static void deallocate(JNIid* id); |
duke@435 | 1031 | // Debugging |
duke@435 | 1032 | #ifdef ASSERT |
duke@435 | 1033 | bool is_static_field_id() const { return _is_static_field_id; } |
duke@435 | 1034 | void set_is_static_field_id() { _is_static_field_id = true; } |
duke@435 | 1035 | #endif |
duke@435 | 1036 | void verify(klassOop holder); |
duke@435 | 1037 | }; |
duke@435 | 1038 | |
duke@435 | 1039 | |
duke@435 | 1040 | // If breakpoints are more numerous than just JVMTI breakpoints, |
duke@435 | 1041 | // consider compressing this data structure. |
duke@435 | 1042 | // It is currently a simple linked list defined in methodOop.hpp. |
duke@435 | 1043 | |
duke@435 | 1044 | class BreakpointInfo; |
duke@435 | 1045 | |
duke@435 | 1046 | |
duke@435 | 1047 | // A collection point for interesting information about the previous |
duke@435 | 1048 | // version(s) of an instanceKlass. This class uses weak references to |
duke@435 | 1049 | // the information so that the information may be collected as needed |
dcubed@482 | 1050 | // by the system. If the information is shared, then a regular |
dcubed@482 | 1051 | // reference must be used because a weak reference would be seen as |
dcubed@482 | 1052 | // collectible. A GrowableArray of PreviousVersionNodes is attached |
duke@435 | 1053 | // to the instanceKlass as needed. See PreviousVersionWalker below. |
duke@435 | 1054 | class PreviousVersionNode : public CHeapObj { |
duke@435 | 1055 | private: |
dcubed@482 | 1056 | // A shared ConstantPool is never collected so we'll always have |
dcubed@482 | 1057 | // a reference to it so we can update items in the cache. We'll |
dcubed@482 | 1058 | // have a weak reference to a non-shared ConstantPool until all |
dcubed@482 | 1059 | // of the methods (EMCP or obsolete) have been collected; the |
dcubed@482 | 1060 | // non-shared ConstantPool becomes collectible at that point. |
dcubed@482 | 1061 | jobject _prev_constant_pool; // regular or weak reference |
dcubed@482 | 1062 | bool _prev_cp_is_weak; // true if not a shared ConstantPool |
dcubed@482 | 1063 | |
duke@435 | 1064 | // If the previous version of the instanceKlass doesn't have any |
duke@435 | 1065 | // EMCP methods, then _prev_EMCP_methods will be NULL. If all the |
duke@435 | 1066 | // EMCP methods have been collected, then _prev_EMCP_methods can |
duke@435 | 1067 | // have a length of zero. |
duke@435 | 1068 | GrowableArray<jweak>* _prev_EMCP_methods; |
duke@435 | 1069 | |
duke@435 | 1070 | public: |
dcubed@482 | 1071 | PreviousVersionNode(jobject prev_constant_pool, bool prev_cp_is_weak, |
duke@435 | 1072 | GrowableArray<jweak>* prev_EMCP_methods); |
duke@435 | 1073 | ~PreviousVersionNode(); |
dcubed@482 | 1074 | jobject prev_constant_pool() const { |
duke@435 | 1075 | return _prev_constant_pool; |
duke@435 | 1076 | } |
duke@435 | 1077 | GrowableArray<jweak>* prev_EMCP_methods() const { |
duke@435 | 1078 | return _prev_EMCP_methods; |
duke@435 | 1079 | } |
duke@435 | 1080 | }; |
duke@435 | 1081 | |
duke@435 | 1082 | |
duke@435 | 1083 | // A Handle-ized version of PreviousVersionNode. |
duke@435 | 1084 | class PreviousVersionInfo : public ResourceObj { |
duke@435 | 1085 | private: |
duke@435 | 1086 | constantPoolHandle _prev_constant_pool_handle; |
duke@435 | 1087 | // If the previous version of the instanceKlass doesn't have any |
duke@435 | 1088 | // EMCP methods, then _prev_EMCP_methods will be NULL. Since the |
duke@435 | 1089 | // methods cannot be collected while we hold a handle, |
duke@435 | 1090 | // _prev_EMCP_methods should never have a length of zero. |
duke@435 | 1091 | GrowableArray<methodHandle>* _prev_EMCP_method_handles; |
duke@435 | 1092 | |
duke@435 | 1093 | public: |
duke@435 | 1094 | PreviousVersionInfo(PreviousVersionNode *pv_node); |
duke@435 | 1095 | ~PreviousVersionInfo(); |
duke@435 | 1096 | constantPoolHandle prev_constant_pool_handle() const { |
duke@435 | 1097 | return _prev_constant_pool_handle; |
duke@435 | 1098 | } |
duke@435 | 1099 | GrowableArray<methodHandle>* prev_EMCP_method_handles() const { |
duke@435 | 1100 | return _prev_EMCP_method_handles; |
duke@435 | 1101 | } |
duke@435 | 1102 | }; |
duke@435 | 1103 | |
duke@435 | 1104 | |
duke@435 | 1105 | // Helper object for walking previous versions. This helper cleans up |
duke@435 | 1106 | // the Handles that it allocates when the helper object is destroyed. |
duke@435 | 1107 | // The PreviousVersionInfo object returned by next_previous_version() |
duke@435 | 1108 | // is only valid until a subsequent call to next_previous_version() or |
duke@435 | 1109 | // the helper object is destroyed. |
duke@435 | 1110 | class PreviousVersionWalker : public StackObj { |
duke@435 | 1111 | private: |
duke@435 | 1112 | GrowableArray<PreviousVersionNode *>* _previous_versions; |
duke@435 | 1113 | int _current_index; |
duke@435 | 1114 | // Fields for cleaning up when we are done walking the previous versions: |
duke@435 | 1115 | // A HandleMark for the PreviousVersionInfo handles: |
duke@435 | 1116 | HandleMark _hm; |
duke@435 | 1117 | |
duke@435 | 1118 | // It would be nice to have a ResourceMark field in this helper also, |
duke@435 | 1119 | // but the ResourceMark code says to be careful to delete handles held |
duke@435 | 1120 | // in GrowableArrays _before_ deleting the GrowableArray. Since we |
duke@435 | 1121 | // can't guarantee the order in which the fields are destroyed, we |
duke@435 | 1122 | // have to let the creator of the PreviousVersionWalker object do |
duke@435 | 1123 | // the right thing. Also, adding a ResourceMark here causes an |
duke@435 | 1124 | // include loop. |
duke@435 | 1125 | |
duke@435 | 1126 | // A pointer to the current info object so we can handle the deletes. |
duke@435 | 1127 | PreviousVersionInfo * _current_p; |
duke@435 | 1128 | |
duke@435 | 1129 | public: |
duke@435 | 1130 | PreviousVersionWalker(instanceKlass *ik); |
duke@435 | 1131 | ~PreviousVersionWalker(); |
duke@435 | 1132 | |
duke@435 | 1133 | // Return the interesting information for the next previous version |
duke@435 | 1134 | // of the klass. Returns NULL if there are no more previous versions. |
duke@435 | 1135 | PreviousVersionInfo* next_previous_version(); |
duke@435 | 1136 | }; |
stefank@2314 | 1137 | |
never@3138 | 1138 | |
never@3138 | 1139 | // |
never@3138 | 1140 | // nmethodBucket is used to record dependent nmethods for |
never@3138 | 1141 | // deoptimization. nmethod dependencies are actually <klass, method> |
never@3138 | 1142 | // pairs but we really only care about the klass part for purposes of |
never@3138 | 1143 | // finding nmethods which might need to be deoptimized. Instead of |
never@3138 | 1144 | // recording the method, a count of how many times a particular nmethod |
never@3138 | 1145 | // was recorded is kept. This ensures that any recording errors are |
never@3138 | 1146 | // noticed since an nmethod should be removed as many times are it's |
never@3138 | 1147 | // added. |
never@3138 | 1148 | // |
never@3138 | 1149 | class nmethodBucket: public CHeapObj { |
never@3138 | 1150 | friend class VMStructs; |
never@3138 | 1151 | private: |
never@3138 | 1152 | nmethod* _nmethod; |
never@3138 | 1153 | int _count; |
never@3138 | 1154 | nmethodBucket* _next; |
never@3138 | 1155 | |
never@3138 | 1156 | public: |
never@3138 | 1157 | nmethodBucket(nmethod* nmethod, nmethodBucket* next) { |
never@3138 | 1158 | _nmethod = nmethod; |
never@3138 | 1159 | _next = next; |
never@3138 | 1160 | _count = 1; |
never@3138 | 1161 | } |
never@3138 | 1162 | int count() { return _count; } |
never@3138 | 1163 | int increment() { _count += 1; return _count; } |
never@3138 | 1164 | int decrement() { _count -= 1; assert(_count >= 0, "don't underflow"); return _count; } |
never@3138 | 1165 | nmethodBucket* next() { return _next; } |
never@3138 | 1166 | void set_next(nmethodBucket* b) { _next = b; } |
never@3138 | 1167 | nmethod* get_nmethod() { return _nmethod; } |
never@3138 | 1168 | }; |
never@3138 | 1169 | |
jiangli@3670 | 1170 | // An iterator that's used to access the inner classes indices in the |
jiangli@3670 | 1171 | // instanceKlass::_inner_classes array. |
jiangli@3670 | 1172 | class InnerClassesIterator : public StackObj { |
jiangli@3670 | 1173 | private: |
jiangli@3670 | 1174 | typeArrayHandle _inner_classes; |
jiangli@3670 | 1175 | int _length; |
jiangli@3670 | 1176 | int _idx; |
jiangli@3670 | 1177 | public: |
jiangli@3670 | 1178 | |
jiangli@3670 | 1179 | InnerClassesIterator(instanceKlassHandle k) { |
jiangli@3670 | 1180 | _inner_classes = k->inner_classes(); |
jiangli@3670 | 1181 | if (k->inner_classes() != NULL) { |
jiangli@3670 | 1182 | _length = _inner_classes->length(); |
jiangli@3670 | 1183 | // The inner class array's length should be the multiple of |
jiangli@3670 | 1184 | // inner_class_next_offset if it only contains the InnerClasses |
jiangli@3670 | 1185 | // attribute data, or it should be |
jiangli@3670 | 1186 | // n*inner_class_next_offset+enclosing_method_attribute_size |
jiangli@3670 | 1187 | // if it also contains the EnclosingMethod data. |
jiangli@3670 | 1188 | assert((_length % instanceKlass::inner_class_next_offset == 0 || |
jiangli@3670 | 1189 | _length % instanceKlass::inner_class_next_offset == instanceKlass::enclosing_method_attribute_size), |
jiangli@3670 | 1190 | "just checking"); |
jiangli@3670 | 1191 | // Remove the enclosing_method portion if exists. |
jiangli@3670 | 1192 | if (_length % instanceKlass::inner_class_next_offset == instanceKlass::enclosing_method_attribute_size) { |
jiangli@3670 | 1193 | _length -= instanceKlass::enclosing_method_attribute_size; |
jiangli@3670 | 1194 | } |
jiangli@3670 | 1195 | } else { |
jiangli@3670 | 1196 | _length = 0; |
jiangli@3670 | 1197 | } |
jiangli@3670 | 1198 | _idx = 0; |
jiangli@3670 | 1199 | } |
jiangli@3670 | 1200 | |
jiangli@3670 | 1201 | int length() const { |
jiangli@3670 | 1202 | return _length; |
jiangli@3670 | 1203 | } |
jiangli@3670 | 1204 | |
jiangli@3670 | 1205 | void next() { |
jiangli@3670 | 1206 | _idx += instanceKlass::inner_class_next_offset; |
jiangli@3670 | 1207 | } |
jiangli@3670 | 1208 | |
jiangli@3670 | 1209 | bool done() const { |
jiangli@3670 | 1210 | return (_idx >= _length); |
jiangli@3670 | 1211 | } |
jiangli@3670 | 1212 | |
jiangli@3670 | 1213 | u2 inner_class_info_index() const { |
jiangli@3670 | 1214 | return _inner_classes->ushort_at( |
jiangli@3670 | 1215 | _idx + instanceKlass::inner_class_inner_class_info_offset); |
jiangli@3670 | 1216 | } |
jiangli@3670 | 1217 | |
jiangli@3670 | 1218 | void set_inner_class_info_index(u2 index) { |
jiangli@3670 | 1219 | _inner_classes->ushort_at_put( |
jiangli@3670 | 1220 | _idx + instanceKlass::inner_class_inner_class_info_offset, index); |
jiangli@3670 | 1221 | } |
jiangli@3670 | 1222 | |
jiangli@3670 | 1223 | u2 outer_class_info_index() const { |
jiangli@3670 | 1224 | return _inner_classes->ushort_at( |
jiangli@3670 | 1225 | _idx + instanceKlass::inner_class_outer_class_info_offset); |
jiangli@3670 | 1226 | } |
jiangli@3670 | 1227 | |
jiangli@3670 | 1228 | void set_outer_class_info_index(u2 index) { |
jiangli@3670 | 1229 | _inner_classes->ushort_at_put( |
jiangli@3670 | 1230 | _idx + instanceKlass::inner_class_outer_class_info_offset, index); |
jiangli@3670 | 1231 | } |
jiangli@3670 | 1232 | |
jiangli@3670 | 1233 | u2 inner_name_index() const { |
jiangli@3670 | 1234 | return _inner_classes->ushort_at( |
jiangli@3670 | 1235 | _idx + instanceKlass::inner_class_inner_name_offset); |
jiangli@3670 | 1236 | } |
jiangli@3670 | 1237 | |
jiangli@3670 | 1238 | void set_inner_name_index(u2 index) { |
jiangli@3670 | 1239 | _inner_classes->ushort_at_put( |
jiangli@3670 | 1240 | _idx + instanceKlass::inner_class_inner_name_offset, index); |
jiangli@3670 | 1241 | } |
jiangli@3670 | 1242 | |
jiangli@3670 | 1243 | u2 inner_access_flags() const { |
jiangli@3670 | 1244 | return _inner_classes->ushort_at( |
jiangli@3670 | 1245 | _idx + instanceKlass::inner_class_access_flags_offset); |
jiangli@3670 | 1246 | } |
jiangli@3670 | 1247 | }; |
jiangli@3670 | 1248 | |
stefank@2314 | 1249 | #endif // SHARE_VM_OOPS_INSTANCEKLASS_HPP |