Mon, 09 Jun 2008 11:51:19 -0400
6687581: Make CMS work with compressed oops
Summary: Make FreeChunk read markword instead of LSB in _klass pointer to indicate that it's a FreeChunk for compressed oops.
Reviewed-by: ysr, jmasa
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 1997-2007 Sun Microsystems, Inc. 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 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | // An instanceKlass is the VM level representation of a Java class. |
duke@435 | 26 | // It contains all information needed for at class at execution runtime. |
duke@435 | 27 | |
duke@435 | 28 | // instanceKlass layout: |
duke@435 | 29 | // [header ] klassOop |
duke@435 | 30 | // [klass pointer ] klassOop |
duke@435 | 31 | // [C++ vtbl pointer ] Klass |
duke@435 | 32 | // [subtype cache ] Klass |
duke@435 | 33 | // [instance size ] Klass |
duke@435 | 34 | // [java mirror ] Klass |
duke@435 | 35 | // [super ] Klass |
duke@435 | 36 | // [access_flags ] Klass |
duke@435 | 37 | // [name ] Klass |
duke@435 | 38 | // [first subklass ] Klass |
duke@435 | 39 | // [next sibling ] Klass |
duke@435 | 40 | // [array klasses ] |
duke@435 | 41 | // [methods ] |
duke@435 | 42 | // [local interfaces ] |
duke@435 | 43 | // [transitive interfaces ] |
duke@435 | 44 | // [number of implementors ] |
duke@435 | 45 | // [implementors ] klassOop[2] |
duke@435 | 46 | // [fields ] |
duke@435 | 47 | // [constants ] |
duke@435 | 48 | // [class loader ] |
duke@435 | 49 | // [protection domain ] |
duke@435 | 50 | // [signers ] |
duke@435 | 51 | // [source file name ] |
duke@435 | 52 | // [inner classes ] |
duke@435 | 53 | // [static field size ] |
duke@435 | 54 | // [nonstatic field size ] |
duke@435 | 55 | // [static oop fields size ] |
duke@435 | 56 | // [nonstatic oop maps size ] |
duke@435 | 57 | // [has finalize method ] |
duke@435 | 58 | // [deoptimization mark bit ] |
duke@435 | 59 | // [initialization state ] |
duke@435 | 60 | // [initializing thread ] |
duke@435 | 61 | // [Java vtable length ] |
duke@435 | 62 | // [oop map cache (stack maps) ] |
duke@435 | 63 | // [EMBEDDED Java vtable ] size in words = vtable_len |
duke@435 | 64 | // [EMBEDDED static oop fields ] size in words = static_oop_fields_size |
duke@435 | 65 | // [ static non-oop fields ] size in words = static_field_size - static_oop_fields_size |
duke@435 | 66 | // [EMBEDDED nonstatic oop-map blocks] size in words = nonstatic_oop_map_size |
duke@435 | 67 | // |
duke@435 | 68 | // The embedded nonstatic oop-map blocks are short pairs (offset, length) indicating |
duke@435 | 69 | // where oops are located in instances of this klass. |
duke@435 | 70 | |
duke@435 | 71 | |
duke@435 | 72 | // forward declaration for class -- see below for definition |
duke@435 | 73 | class SuperTypeClosure; |
duke@435 | 74 | class OopMapBlock; |
duke@435 | 75 | class JNIid; |
duke@435 | 76 | class jniIdMapBase; |
duke@435 | 77 | class BreakpointInfo; |
duke@435 | 78 | class fieldDescriptor; |
duke@435 | 79 | class DepChange; |
duke@435 | 80 | class nmethodBucket; |
duke@435 | 81 | class PreviousVersionNode; |
duke@435 | 82 | class JvmtiCachedClassFieldMap; |
duke@435 | 83 | |
duke@435 | 84 | // This is used in iterators below. |
duke@435 | 85 | class FieldClosure: public StackObj { |
duke@435 | 86 | public: |
duke@435 | 87 | virtual void do_field(fieldDescriptor* fd) = 0; |
duke@435 | 88 | }; |
duke@435 | 89 | |
duke@435 | 90 | #ifndef PRODUCT |
duke@435 | 91 | // Print fields. |
duke@435 | 92 | // If "obj" argument to constructor is NULL, prints static fields, otherwise prints non-static fields. |
duke@435 | 93 | class FieldPrinter: public FieldClosure { |
duke@435 | 94 | oop _obj; |
duke@435 | 95 | outputStream* _st; |
duke@435 | 96 | public: |
duke@435 | 97 | FieldPrinter(outputStream* st, oop obj = NULL) : _obj(obj), _st(st) {} |
duke@435 | 98 | void do_field(fieldDescriptor* fd); |
duke@435 | 99 | }; |
duke@435 | 100 | #endif // !PRODUCT |
duke@435 | 101 | |
duke@435 | 102 | class instanceKlass: public Klass { |
duke@435 | 103 | friend class VMStructs; |
duke@435 | 104 | public: |
duke@435 | 105 | // See "The Java Virtual Machine Specification" section 2.16.2-5 for a detailed description |
duke@435 | 106 | // of the class loading & initialization procedure, and the use of the states. |
duke@435 | 107 | enum ClassState { |
duke@435 | 108 | unparsable_by_gc = 0, // object is not yet parsable by gc. Value of _init_state at object allocation. |
duke@435 | 109 | allocated, // allocated (but not yet linked) |
duke@435 | 110 | loaded, // loaded and inserted in class hierarchy (but not linked yet) |
duke@435 | 111 | linked, // successfully linked/verified (but not initialized yet) |
duke@435 | 112 | being_initialized, // currently running class initializer |
duke@435 | 113 | fully_initialized, // initialized (successfull final state) |
duke@435 | 114 | initialization_error // error happened during initialization |
duke@435 | 115 | }; |
duke@435 | 116 | |
duke@435 | 117 | public: |
duke@435 | 118 | oop* oop_block_beg() const { return adr_array_klasses(); } |
duke@435 | 119 | oop* oop_block_end() const { return adr_methods_default_annotations() + 1; } |
duke@435 | 120 | |
duke@435 | 121 | enum { |
duke@435 | 122 | implementors_limit = 2 // how many implems can we track? |
duke@435 | 123 | }; |
duke@435 | 124 | |
duke@435 | 125 | protected: |
duke@435 | 126 | // |
duke@435 | 127 | // The oop block. See comment in klass.hpp before making changes. |
duke@435 | 128 | // |
duke@435 | 129 | |
duke@435 | 130 | // Array classes holding elements of this class. |
duke@435 | 131 | klassOop _array_klasses; |
duke@435 | 132 | // Method array. |
duke@435 | 133 | objArrayOop _methods; |
duke@435 | 134 | // Int array containing the original order of method in the class file (for |
duke@435 | 135 | // JVMTI). |
duke@435 | 136 | typeArrayOop _method_ordering; |
duke@435 | 137 | // Interface (klassOops) this class declares locally to implement. |
duke@435 | 138 | objArrayOop _local_interfaces; |
duke@435 | 139 | // Interface (klassOops) this class implements transitively. |
duke@435 | 140 | objArrayOop _transitive_interfaces; |
duke@435 | 141 | // Instance and static variable information, 5-tuples of shorts [access, name |
duke@435 | 142 | // index, sig index, initval index, offset]. |
duke@435 | 143 | typeArrayOop _fields; |
duke@435 | 144 | // Constant pool for this class. |
duke@435 | 145 | constantPoolOop _constants; |
duke@435 | 146 | // Class loader used to load this class, NULL if VM loader used. |
duke@435 | 147 | oop _class_loader; |
duke@435 | 148 | // Protection domain. |
duke@435 | 149 | oop _protection_domain; |
duke@435 | 150 | // Class signers. |
duke@435 | 151 | objArrayOop _signers; |
duke@435 | 152 | // Name of source file containing this klass, NULL if not specified. |
duke@435 | 153 | symbolOop _source_file_name; |
duke@435 | 154 | // the source debug extension for this klass, NULL if not specified. |
duke@435 | 155 | symbolOop _source_debug_extension; |
duke@435 | 156 | // inner_classes attribute. |
duke@435 | 157 | typeArrayOop _inner_classes; |
duke@435 | 158 | // Implementors of this interface (not valid if it overflows) |
duke@435 | 159 | klassOop _implementors[implementors_limit]; |
duke@435 | 160 | // Generic signature, or null if none. |
duke@435 | 161 | symbolOop _generic_signature; |
duke@435 | 162 | // Annotations for this class, or null if none. |
duke@435 | 163 | typeArrayOop _class_annotations; |
duke@435 | 164 | // Annotation objects (byte arrays) for fields, or null if no annotations. |
duke@435 | 165 | // Indices correspond to entries (not indices) in fields array. |
duke@435 | 166 | objArrayOop _fields_annotations; |
duke@435 | 167 | // Annotation objects (byte arrays) for methods, or null if no annotations. |
duke@435 | 168 | // Index is the idnum, which is initially the same as the methods array index. |
duke@435 | 169 | objArrayOop _methods_annotations; |
duke@435 | 170 | // Annotation objects (byte arrays) for methods' parameters, or null if no |
duke@435 | 171 | // such annotations. |
duke@435 | 172 | // Index is the idnum, which is initially the same as the methods array index. |
duke@435 | 173 | objArrayOop _methods_parameter_annotations; |
duke@435 | 174 | // Annotation objects (byte arrays) for methods' default values, or null if no |
duke@435 | 175 | // such annotations. |
duke@435 | 176 | // Index is the idnum, which is initially the same as the methods array index. |
duke@435 | 177 | objArrayOop _methods_default_annotations; |
duke@435 | 178 | |
duke@435 | 179 | // |
duke@435 | 180 | // End of the oop block. |
duke@435 | 181 | // |
duke@435 | 182 | |
kvn@600 | 183 | // Number of heapOopSize words used by non-static fields in this klass |
kvn@600 | 184 | // (including inherited fields but after header_size()). |
coleenp@548 | 185 | int _nonstatic_field_size; |
coleenp@548 | 186 | int _static_field_size; // number words used by static fields (oop and non-oop) in this klass |
duke@435 | 187 | int _static_oop_field_size;// number of static oop fields in this klass |
duke@435 | 188 | int _nonstatic_oop_map_size;// number of nonstatic oop-map blocks allocated at end of this klass |
duke@435 | 189 | bool _is_marked_dependent; // used for marking during flushing and deoptimization |
duke@435 | 190 | bool _rewritten; // methods rewritten. |
coleenp@548 | 191 | bool _has_nonstatic_fields; // for sizing with UseCompressedOops |
duke@435 | 192 | u2 _minor_version; // minor version number of class file |
duke@435 | 193 | u2 _major_version; // major version number of class file |
duke@435 | 194 | ClassState _init_state; // state of class |
duke@435 | 195 | Thread* _init_thread; // Pointer to current thread doing initialization (to handle recusive initialization) |
duke@435 | 196 | int _vtable_len; // length of Java vtable (in words) |
duke@435 | 197 | int _itable_len; // length of Java itable (in words) |
duke@435 | 198 | ReferenceType _reference_type; // reference type |
duke@435 | 199 | OopMapCache* volatile _oop_map_cache; // OopMapCache for all methods in the klass (allocated lazily) |
duke@435 | 200 | JNIid* _jni_ids; // First JNI identifier for static fields in this class |
duke@435 | 201 | jmethodID* _methods_jmethod_ids; // jmethodIDs corresponding to method_idnum, or NULL if none |
duke@435 | 202 | int* _methods_cached_itable_indices; // itable_index cache for JNI invoke corresponding to methods idnum, or NULL |
duke@435 | 203 | nmethodBucket* _dependencies; // list of dependent nmethods |
duke@435 | 204 | nmethod* _osr_nmethods_head; // Head of list of on-stack replacement nmethods for this class |
duke@435 | 205 | BreakpointInfo* _breakpoints; // bpt lists, managed by methodOop |
duke@435 | 206 | int _nof_implementors; // No of implementors of this interface (zero if not an interface) |
duke@435 | 207 | // Array of interesting part(s) of the previous version(s) of this |
duke@435 | 208 | // instanceKlass. See PreviousVersionWalker below. |
duke@435 | 209 | GrowableArray<PreviousVersionNode *>* _previous_versions; |
duke@435 | 210 | u2 _enclosing_method_class_index; // Constant pool index for class of enclosing method, or 0 if none |
duke@435 | 211 | u2 _enclosing_method_method_index; // Constant pool index for name and type of enclosing method, or 0 if none |
duke@435 | 212 | // JVMTI fields can be moved to their own structure - see 6315920 |
duke@435 | 213 | unsigned char * _cached_class_file_bytes; // JVMTI: cached class file, before retransformable agent modified it in CFLH |
duke@435 | 214 | jint _cached_class_file_len; // JVMTI: length of above |
duke@435 | 215 | JvmtiCachedClassFieldMap* _jvmti_cached_class_field_map; // JVMTI: used during heap iteration |
duke@435 | 216 | volatile u2 _idnum_allocated_count; // JNI/JVMTI: increments with the addition of methods, old ids don't change |
duke@435 | 217 | |
duke@435 | 218 | // embedded Java vtable follows here |
duke@435 | 219 | // embedded Java itables follows here |
duke@435 | 220 | // embedded static fields follows here |
duke@435 | 221 | // embedded nonstatic oop-map blocks follows here |
duke@435 | 222 | |
duke@435 | 223 | friend class instanceKlassKlass; |
duke@435 | 224 | friend class SystemDictionary; |
duke@435 | 225 | |
duke@435 | 226 | public: |
coleenp@548 | 227 | bool has_nonstatic_fields() const { return _has_nonstatic_fields; } |
coleenp@548 | 228 | void set_has_nonstatic_fields(bool b) { _has_nonstatic_fields = b; } |
coleenp@548 | 229 | |
duke@435 | 230 | // field sizes |
duke@435 | 231 | int nonstatic_field_size() const { return _nonstatic_field_size; } |
duke@435 | 232 | void set_nonstatic_field_size(int size) { _nonstatic_field_size = size; } |
duke@435 | 233 | |
duke@435 | 234 | int static_field_size() const { return _static_field_size; } |
duke@435 | 235 | void set_static_field_size(int size) { _static_field_size = size; } |
duke@435 | 236 | |
duke@435 | 237 | int static_oop_field_size() const { return _static_oop_field_size; } |
duke@435 | 238 | void set_static_oop_field_size(int size) { _static_oop_field_size = size; } |
duke@435 | 239 | |
duke@435 | 240 | // Java vtable |
duke@435 | 241 | int vtable_length() const { return _vtable_len; } |
duke@435 | 242 | void set_vtable_length(int len) { _vtable_len = len; } |
duke@435 | 243 | |
duke@435 | 244 | // Java itable |
duke@435 | 245 | int itable_length() const { return _itable_len; } |
duke@435 | 246 | void set_itable_length(int len) { _itable_len = len; } |
duke@435 | 247 | |
duke@435 | 248 | // array klasses |
duke@435 | 249 | klassOop array_klasses() const { return _array_klasses; } |
duke@435 | 250 | void set_array_klasses(klassOop k) { oop_store_without_check((oop*) &_array_klasses, (oop) k); } |
duke@435 | 251 | |
duke@435 | 252 | // methods |
duke@435 | 253 | objArrayOop methods() const { return _methods; } |
duke@435 | 254 | void set_methods(objArrayOop a) { oop_store_without_check((oop*) &_methods, (oop) a); } |
duke@435 | 255 | methodOop method_with_idnum(int idnum); |
duke@435 | 256 | |
duke@435 | 257 | // method ordering |
duke@435 | 258 | typeArrayOop method_ordering() const { return _method_ordering; } |
duke@435 | 259 | void set_method_ordering(typeArrayOop m) { oop_store_without_check((oop*) &_method_ordering, (oop) m); } |
duke@435 | 260 | |
duke@435 | 261 | // interfaces |
duke@435 | 262 | objArrayOop local_interfaces() const { return _local_interfaces; } |
duke@435 | 263 | void set_local_interfaces(objArrayOop a) { oop_store_without_check((oop*) &_local_interfaces, (oop) a); } |
duke@435 | 264 | objArrayOop transitive_interfaces() const { return _transitive_interfaces; } |
duke@435 | 265 | void set_transitive_interfaces(objArrayOop a) { oop_store_without_check((oop*) &_transitive_interfaces, (oop) a); } |
duke@435 | 266 | |
duke@435 | 267 | // fields |
duke@435 | 268 | // Field info extracted from the class file and stored |
duke@435 | 269 | // as an array of 7 shorts |
duke@435 | 270 | enum FieldOffset { |
duke@435 | 271 | access_flags_offset = 0, |
duke@435 | 272 | name_index_offset = 1, |
duke@435 | 273 | signature_index_offset = 2, |
duke@435 | 274 | initval_index_offset = 3, |
duke@435 | 275 | low_offset = 4, |
duke@435 | 276 | high_offset = 5, |
duke@435 | 277 | generic_signature_offset = 6, |
duke@435 | 278 | next_offset = 7 |
duke@435 | 279 | }; |
duke@435 | 280 | |
duke@435 | 281 | typeArrayOop fields() const { return _fields; } |
duke@435 | 282 | int offset_from_fields( int index ) const { |
duke@435 | 283 | return build_int_from_shorts( fields()->ushort_at(index + low_offset), |
duke@435 | 284 | fields()->ushort_at(index + high_offset) ); |
duke@435 | 285 | } |
duke@435 | 286 | |
duke@435 | 287 | void set_fields(typeArrayOop f) { oop_store_without_check((oop*) &_fields, (oop) f); } |
duke@435 | 288 | |
duke@435 | 289 | // inner classes |
duke@435 | 290 | typeArrayOop inner_classes() const { return _inner_classes; } |
duke@435 | 291 | void set_inner_classes(typeArrayOop f) { oop_store_without_check((oop*) &_inner_classes, (oop) f); } |
duke@435 | 292 | |
duke@435 | 293 | enum InnerClassAttributeOffset { |
duke@435 | 294 | // From http://mirror.eng/products/jdk/1.1/docs/guide/innerclasses/spec/innerclasses.doc10.html#18814 |
duke@435 | 295 | inner_class_inner_class_info_offset = 0, |
duke@435 | 296 | inner_class_outer_class_info_offset = 1, |
duke@435 | 297 | inner_class_inner_name_offset = 2, |
duke@435 | 298 | inner_class_access_flags_offset = 3, |
duke@435 | 299 | inner_class_next_offset = 4 |
duke@435 | 300 | }; |
duke@435 | 301 | |
duke@435 | 302 | // package |
duke@435 | 303 | bool is_same_class_package(klassOop class2); |
duke@435 | 304 | bool is_same_class_package(oop classloader2, symbolOop classname2); |
duke@435 | 305 | static bool is_same_class_package(oop class_loader1, symbolOop class_name1, oop class_loader2, symbolOop class_name2); |
duke@435 | 306 | |
duke@435 | 307 | // initialization state |
duke@435 | 308 | bool is_loaded() const { return _init_state >= loaded; } |
duke@435 | 309 | bool is_linked() const { return _init_state >= linked; } |
duke@435 | 310 | bool is_initialized() const { return _init_state == fully_initialized; } |
duke@435 | 311 | bool is_not_initialized() const { return _init_state < being_initialized; } |
duke@435 | 312 | bool is_being_initialized() const { return _init_state == being_initialized; } |
duke@435 | 313 | bool is_in_error_state() const { return _init_state == initialization_error; } |
duke@435 | 314 | bool is_reentrant_initialization(Thread *thread) { return thread == _init_thread; } |
duke@435 | 315 | int get_init_state() { return _init_state; } // Useful for debugging |
duke@435 | 316 | bool is_rewritten() const { return _rewritten; } |
duke@435 | 317 | |
duke@435 | 318 | // marking |
duke@435 | 319 | bool is_marked_dependent() const { return _is_marked_dependent; } |
duke@435 | 320 | void set_is_marked_dependent(bool value) { _is_marked_dependent = value; } |
duke@435 | 321 | |
duke@435 | 322 | // initialization (virtuals from Klass) |
duke@435 | 323 | bool should_be_initialized() const; // means that initialize should be called |
duke@435 | 324 | void initialize(TRAPS); |
duke@435 | 325 | void link_class(TRAPS); |
duke@435 | 326 | bool link_class_or_fail(TRAPS); // returns false on failure |
duke@435 | 327 | void unlink_class(); |
duke@435 | 328 | void rewrite_class(TRAPS); |
duke@435 | 329 | methodOop class_initializer(); |
duke@435 | 330 | |
duke@435 | 331 | // set the class to initialized if no static initializer is present |
duke@435 | 332 | void eager_initialize(Thread *thread); |
duke@435 | 333 | |
duke@435 | 334 | // reference type |
duke@435 | 335 | ReferenceType reference_type() const { return _reference_type; } |
duke@435 | 336 | void set_reference_type(ReferenceType t) { _reference_type = t; } |
duke@435 | 337 | |
duke@435 | 338 | // find local field, returns true if found |
duke@435 | 339 | bool find_local_field(symbolOop name, symbolOop sig, fieldDescriptor* fd) const; |
duke@435 | 340 | // find field in direct superinterfaces, returns the interface in which the field is defined |
duke@435 | 341 | klassOop find_interface_field(symbolOop name, symbolOop sig, fieldDescriptor* fd) const; |
duke@435 | 342 | // find field according to JVM spec 5.4.3.2, returns the klass in which the field is defined |
duke@435 | 343 | klassOop find_field(symbolOop name, symbolOop sig, fieldDescriptor* fd) const; |
duke@435 | 344 | // find instance or static fields according to JVM spec 5.4.3.2, returns the klass in which the field is defined |
duke@435 | 345 | klassOop find_field(symbolOop name, symbolOop sig, bool is_static, fieldDescriptor* fd) const; |
duke@435 | 346 | |
duke@435 | 347 | // find a non-static or static field given its offset within the class. |
duke@435 | 348 | bool contains_field_offset(int offset) { |
coleenp@548 | 349 | return instanceOopDesc::contains_field_offset(offset, nonstatic_field_size()); |
duke@435 | 350 | } |
duke@435 | 351 | |
duke@435 | 352 | bool find_local_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const; |
duke@435 | 353 | bool find_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const; |
duke@435 | 354 | |
duke@435 | 355 | // find a local method (returns NULL if not found) |
duke@435 | 356 | methodOop find_method(symbolOop name, symbolOop signature) const; |
duke@435 | 357 | static methodOop find_method(objArrayOop methods, symbolOop name, symbolOop signature); |
duke@435 | 358 | |
duke@435 | 359 | // lookup operation (returns NULL if not found) |
duke@435 | 360 | methodOop uncached_lookup_method(symbolOop name, symbolOop signature) const; |
duke@435 | 361 | |
duke@435 | 362 | // lookup a method in all the interfaces that this class implements |
duke@435 | 363 | // (returns NULL if not found) |
duke@435 | 364 | methodOop lookup_method_in_all_interfaces(symbolOop name, symbolOop signature) const; |
duke@435 | 365 | |
duke@435 | 366 | // constant pool |
duke@435 | 367 | constantPoolOop constants() const { return _constants; } |
duke@435 | 368 | void set_constants(constantPoolOop c) { oop_store_without_check((oop*) &_constants, (oop) c); } |
duke@435 | 369 | |
duke@435 | 370 | // class loader |
duke@435 | 371 | oop class_loader() const { return _class_loader; } |
duke@435 | 372 | void set_class_loader(oop l) { oop_store((oop*) &_class_loader, l); } |
duke@435 | 373 | |
duke@435 | 374 | // protection domain |
duke@435 | 375 | oop protection_domain() { return _protection_domain; } |
duke@435 | 376 | void set_protection_domain(oop pd) { oop_store((oop*) &_protection_domain, pd); } |
duke@435 | 377 | |
duke@435 | 378 | // signers |
duke@435 | 379 | objArrayOop signers() const { return _signers; } |
duke@435 | 380 | void set_signers(objArrayOop s) { oop_store((oop*) &_signers, oop(s)); } |
duke@435 | 381 | |
duke@435 | 382 | // source file name |
duke@435 | 383 | symbolOop source_file_name() const { return _source_file_name; } |
duke@435 | 384 | void set_source_file_name(symbolOop n) { oop_store_without_check((oop*) &_source_file_name, (oop) n); } |
duke@435 | 385 | |
duke@435 | 386 | // minor and major version numbers of class file |
duke@435 | 387 | u2 minor_version() const { return _minor_version; } |
duke@435 | 388 | void set_minor_version(u2 minor_version) { _minor_version = minor_version; } |
duke@435 | 389 | u2 major_version() const { return _major_version; } |
duke@435 | 390 | void set_major_version(u2 major_version) { _major_version = major_version; } |
duke@435 | 391 | |
duke@435 | 392 | // source debug extension |
duke@435 | 393 | symbolOop source_debug_extension() const { return _source_debug_extension; } |
duke@435 | 394 | void set_source_debug_extension(symbolOop n){ oop_store_without_check((oop*) &_source_debug_extension, (oop) n); } |
duke@435 | 395 | |
duke@435 | 396 | // nonstatic oop-map blocks |
duke@435 | 397 | int nonstatic_oop_map_size() const { return _nonstatic_oop_map_size; } |
duke@435 | 398 | void set_nonstatic_oop_map_size(int size) { _nonstatic_oop_map_size = size; } |
duke@435 | 399 | |
duke@435 | 400 | // RedefineClasses() support for previous versions: |
duke@435 | 401 | void add_previous_version(instanceKlassHandle ikh, BitMap *emcp_methods, |
duke@435 | 402 | int emcp_method_count); |
duke@435 | 403 | bool has_previous_version() const; |
duke@435 | 404 | void init_previous_versions() { |
duke@435 | 405 | _previous_versions = NULL; |
duke@435 | 406 | } |
duke@435 | 407 | GrowableArray<PreviousVersionNode *>* previous_versions() const { |
duke@435 | 408 | return _previous_versions; |
duke@435 | 409 | } |
duke@435 | 410 | |
duke@435 | 411 | // JVMTI: Support for caching a class file before it is modified by an agent that can do retransformation |
duke@435 | 412 | void set_cached_class_file(unsigned char *class_file_bytes, |
duke@435 | 413 | jint class_file_len) { _cached_class_file_len = class_file_len; |
duke@435 | 414 | _cached_class_file_bytes = class_file_bytes; } |
duke@435 | 415 | jint get_cached_class_file_len() { return _cached_class_file_len; } |
duke@435 | 416 | unsigned char * get_cached_class_file_bytes() { return _cached_class_file_bytes; } |
duke@435 | 417 | |
duke@435 | 418 | // JVMTI: Support for caching of field indices, types, and offsets |
duke@435 | 419 | void set_jvmti_cached_class_field_map(JvmtiCachedClassFieldMap* descriptor) { |
duke@435 | 420 | _jvmti_cached_class_field_map = descriptor; |
duke@435 | 421 | } |
duke@435 | 422 | JvmtiCachedClassFieldMap* jvmti_cached_class_field_map() const { |
duke@435 | 423 | return _jvmti_cached_class_field_map; |
duke@435 | 424 | } |
duke@435 | 425 | |
duke@435 | 426 | // for adding methods, constMethodOopDesc::UNSET_IDNUM means no more ids available |
duke@435 | 427 | inline u2 next_method_idnum(); |
duke@435 | 428 | void set_initial_method_idnum(u2 value) { _idnum_allocated_count = value; } |
duke@435 | 429 | |
duke@435 | 430 | // generics support |
duke@435 | 431 | symbolOop generic_signature() const { return _generic_signature; } |
duke@435 | 432 | void set_generic_signature(symbolOop sig) { oop_store_without_check((oop*)&_generic_signature, (oop)sig); } |
duke@435 | 433 | u2 enclosing_method_class_index() const { return _enclosing_method_class_index; } |
duke@435 | 434 | u2 enclosing_method_method_index() const { return _enclosing_method_method_index; } |
duke@435 | 435 | void set_enclosing_method_indices(u2 class_index, |
duke@435 | 436 | u2 method_index) { _enclosing_method_class_index = class_index; |
duke@435 | 437 | _enclosing_method_method_index = method_index; } |
duke@435 | 438 | |
duke@435 | 439 | // jmethodID support |
dcubed@484 | 440 | static jmethodID get_jmethod_id(instanceKlassHandle ik_h, size_t idnum, |
dcubed@484 | 441 | jmethodID new_id, jmethodID* new_jmeths); |
duke@435 | 442 | static jmethodID jmethod_id_for_impl(instanceKlassHandle ik_h, methodHandle method_h); |
duke@435 | 443 | jmethodID jmethod_id_or_null(methodOop method); |
duke@435 | 444 | |
duke@435 | 445 | // cached itable index support |
duke@435 | 446 | void set_cached_itable_index(size_t idnum, int index); |
duke@435 | 447 | int cached_itable_index(size_t idnum); |
duke@435 | 448 | |
duke@435 | 449 | // annotations support |
duke@435 | 450 | typeArrayOop class_annotations() const { return _class_annotations; } |
duke@435 | 451 | objArrayOop fields_annotations() const { return _fields_annotations; } |
duke@435 | 452 | objArrayOop methods_annotations() const { return _methods_annotations; } |
duke@435 | 453 | objArrayOop methods_parameter_annotations() const { return _methods_parameter_annotations; } |
duke@435 | 454 | objArrayOop methods_default_annotations() const { return _methods_default_annotations; } |
duke@435 | 455 | void set_class_annotations(typeArrayOop md) { oop_store_without_check((oop*)&_class_annotations, (oop)md); } |
duke@435 | 456 | void set_fields_annotations(objArrayOop md) { set_annotations(md, &_fields_annotations); } |
duke@435 | 457 | void set_methods_annotations(objArrayOop md) { set_annotations(md, &_methods_annotations); } |
duke@435 | 458 | void set_methods_parameter_annotations(objArrayOop md) { set_annotations(md, &_methods_parameter_annotations); } |
duke@435 | 459 | void set_methods_default_annotations(objArrayOop md) { set_annotations(md, &_methods_default_annotations); } |
duke@435 | 460 | typeArrayOop get_method_annotations_of(int idnum) |
duke@435 | 461 | { return get_method_annotations_from(idnum, _methods_annotations); } |
duke@435 | 462 | typeArrayOop get_method_parameter_annotations_of(int idnum) |
duke@435 | 463 | { return get_method_annotations_from(idnum, _methods_parameter_annotations); } |
duke@435 | 464 | typeArrayOop get_method_default_annotations_of(int idnum) |
duke@435 | 465 | { return get_method_annotations_from(idnum, _methods_default_annotations); } |
duke@435 | 466 | void set_method_annotations_of(int idnum, typeArrayOop anno) |
duke@435 | 467 | { set_methods_annotations_of(idnum, anno, &_methods_annotations); } |
duke@435 | 468 | void set_method_parameter_annotations_of(int idnum, typeArrayOop anno) |
duke@435 | 469 | { set_methods_annotations_of(idnum, anno, &_methods_annotations); } |
duke@435 | 470 | void set_method_default_annotations_of(int idnum, typeArrayOop anno) |
duke@435 | 471 | { set_methods_annotations_of(idnum, anno, &_methods_annotations); } |
duke@435 | 472 | |
duke@435 | 473 | // allocation |
duke@435 | 474 | DEFINE_ALLOCATE_PERMANENT(instanceKlass); |
duke@435 | 475 | instanceOop allocate_instance(TRAPS); |
duke@435 | 476 | instanceOop allocate_permanent_instance(TRAPS); |
duke@435 | 477 | |
duke@435 | 478 | // additional member function to return a handle |
duke@435 | 479 | instanceHandle allocate_instance_handle(TRAPS) { return instanceHandle(THREAD, allocate_instance(THREAD)); } |
duke@435 | 480 | |
duke@435 | 481 | objArrayOop allocate_objArray(int n, int length, TRAPS); |
duke@435 | 482 | // Helper function |
duke@435 | 483 | static instanceOop register_finalizer(instanceOop i, TRAPS); |
duke@435 | 484 | |
duke@435 | 485 | // Check whether reflection/jni/jvm code is allowed to instantiate this class; |
duke@435 | 486 | // if not, throw either an Error or an Exception. |
duke@435 | 487 | virtual void check_valid_for_instantiation(bool throwError, TRAPS); |
duke@435 | 488 | |
duke@435 | 489 | // initialization |
duke@435 | 490 | void call_class_initializer(TRAPS); |
duke@435 | 491 | void set_initialization_state_and_notify(ClassState state, TRAPS); |
duke@435 | 492 | |
duke@435 | 493 | // OopMapCache support |
duke@435 | 494 | OopMapCache* oop_map_cache() { return _oop_map_cache; } |
duke@435 | 495 | void set_oop_map_cache(OopMapCache *cache) { _oop_map_cache = cache; } |
duke@435 | 496 | void mask_for(methodHandle method, int bci, InterpreterOopMap* entry); |
duke@435 | 497 | |
duke@435 | 498 | // JNI identifier support (for static fields - for jni performance) |
duke@435 | 499 | JNIid* jni_ids() { return _jni_ids; } |
duke@435 | 500 | void set_jni_ids(JNIid* ids) { _jni_ids = ids; } |
duke@435 | 501 | JNIid* jni_id_for(int offset); |
duke@435 | 502 | |
duke@435 | 503 | // maintenance of deoptimization dependencies |
duke@435 | 504 | int mark_dependent_nmethods(DepChange& changes); |
duke@435 | 505 | void add_dependent_nmethod(nmethod* nm); |
duke@435 | 506 | void remove_dependent_nmethod(nmethod* nm); |
duke@435 | 507 | |
duke@435 | 508 | // On-stack replacement support |
duke@435 | 509 | nmethod* osr_nmethods_head() const { return _osr_nmethods_head; }; |
duke@435 | 510 | void set_osr_nmethods_head(nmethod* h) { _osr_nmethods_head = h; }; |
duke@435 | 511 | void add_osr_nmethod(nmethod* n); |
duke@435 | 512 | void remove_osr_nmethod(nmethod* n); |
duke@435 | 513 | nmethod* lookup_osr_nmethod(const methodOop m, int bci) const; |
duke@435 | 514 | |
duke@435 | 515 | // Breakpoint support (see methods on methodOop for details) |
duke@435 | 516 | BreakpointInfo* breakpoints() const { return _breakpoints; }; |
duke@435 | 517 | void set_breakpoints(BreakpointInfo* bps) { _breakpoints = bps; }; |
duke@435 | 518 | |
duke@435 | 519 | // support for stub routines |
duke@435 | 520 | static int init_state_offset_in_bytes() { return offset_of(instanceKlass, _init_state); } |
duke@435 | 521 | static int init_thread_offset_in_bytes() { return offset_of(instanceKlass, _init_thread); } |
duke@435 | 522 | |
duke@435 | 523 | // subclass/subinterface checks |
duke@435 | 524 | bool implements_interface(klassOop k) const; |
duke@435 | 525 | |
duke@435 | 526 | // Access to implementors of an interface. We only store the count |
duke@435 | 527 | // of implementors, and in case, there are only a few |
duke@435 | 528 | // implementors, we store them in a short list. |
duke@435 | 529 | // This accessor returns NULL if we walk off the end of the list. |
duke@435 | 530 | klassOop implementor(int i) const { |
duke@435 | 531 | return (i < implementors_limit)? _implementors[i]: (klassOop) NULL; |
duke@435 | 532 | } |
duke@435 | 533 | int nof_implementors() const { return _nof_implementors; } |
duke@435 | 534 | void add_implementor(klassOop k); // k is a new class that implements this interface |
duke@435 | 535 | void init_implementor(); // initialize |
duke@435 | 536 | |
duke@435 | 537 | // link this class into the implementors list of every interface it implements |
duke@435 | 538 | void process_interfaces(Thread *thread); |
duke@435 | 539 | |
duke@435 | 540 | // virtual operations from Klass |
duke@435 | 541 | bool is_leaf_class() const { return _subklass == NULL; } |
duke@435 | 542 | objArrayOop compute_secondary_supers(int num_extra_slots, TRAPS); |
duke@435 | 543 | bool compute_is_subtype_of(klassOop k); |
duke@435 | 544 | bool can_be_primary_super_slow() const; |
duke@435 | 545 | klassOop java_super() const { return super(); } |
duke@435 | 546 | int oop_size(oop obj) const { return size_helper(); } |
duke@435 | 547 | int klass_oop_size() const { return object_size(); } |
duke@435 | 548 | bool oop_is_instance_slow() const { return true; } |
duke@435 | 549 | |
duke@435 | 550 | // Iterators |
duke@435 | 551 | void do_local_static_fields(FieldClosure* cl); |
duke@435 | 552 | void do_nonstatic_fields(FieldClosure* cl); // including inherited fields |
duke@435 | 553 | void do_local_static_fields(void f(fieldDescriptor*, TRAPS), TRAPS); |
duke@435 | 554 | |
duke@435 | 555 | void methods_do(void f(methodOop method)); |
duke@435 | 556 | void array_klasses_do(void f(klassOop k)); |
duke@435 | 557 | void with_array_klasses_do(void f(klassOop k)); |
duke@435 | 558 | bool super_types_do(SuperTypeClosure* blk); |
duke@435 | 559 | |
duke@435 | 560 | // Casting from klassOop |
duke@435 | 561 | static instanceKlass* cast(klassOop k) { |
duke@435 | 562 | Klass* kp = k->klass_part(); |
duke@435 | 563 | assert(kp->null_vtbl() || kp->oop_is_instance_slow(), "cast to instanceKlass"); |
duke@435 | 564 | return (instanceKlass*) kp; |
duke@435 | 565 | } |
duke@435 | 566 | |
duke@435 | 567 | // Sizing (in words) |
duke@435 | 568 | static int header_size() { return align_object_offset(oopDesc::header_size() + sizeof(instanceKlass)/HeapWordSize); } |
duke@435 | 569 | int object_size() const { return object_size(align_object_offset(vtable_length()) + align_object_offset(itable_length()) + static_field_size() + nonstatic_oop_map_size()); } |
duke@435 | 570 | static int vtable_start_offset() { return header_size(); } |
duke@435 | 571 | static int vtable_length_offset() { return oopDesc::header_size() + offset_of(instanceKlass, _vtable_len) / HeapWordSize; } |
duke@435 | 572 | static int object_size(int extra) { return align_object_size(header_size() + extra); } |
duke@435 | 573 | |
duke@435 | 574 | intptr_t* start_of_vtable() const { return ((intptr_t*)as_klassOop()) + vtable_start_offset(); } |
duke@435 | 575 | intptr_t* start_of_itable() const { return start_of_vtable() + align_object_offset(vtable_length()); } |
duke@435 | 576 | int itable_offset_in_words() const { return start_of_itable() - (intptr_t*)as_klassOop(); } |
duke@435 | 577 | |
coleenp@548 | 578 | // Static field offset is an offset into the Heap, should be converted by |
coleenp@548 | 579 | // based on UseCompressedOop for traversal |
coleenp@548 | 580 | HeapWord* start_of_static_fields() const { |
coleenp@548 | 581 | return (HeapWord*)(start_of_itable() + align_object_offset(itable_length())); |
coleenp@548 | 582 | } |
coleenp@548 | 583 | |
duke@435 | 584 | intptr_t* end_of_itable() const { return start_of_itable() + itable_length(); } |
duke@435 | 585 | |
coleenp@548 | 586 | int offset_of_static_fields() const { |
coleenp@548 | 587 | return (intptr_t)start_of_static_fields() - (intptr_t)as_klassOop(); |
coleenp@548 | 588 | } |
coleenp@548 | 589 | |
coleenp@548 | 590 | OopMapBlock* start_of_nonstatic_oop_maps() const { |
coleenp@548 | 591 | return (OopMapBlock*) (start_of_static_fields() + static_field_size()); |
coleenp@548 | 592 | } |
duke@435 | 593 | |
duke@435 | 594 | // Allocation profiling support |
duke@435 | 595 | juint alloc_size() const { return _alloc_count * size_helper(); } |
duke@435 | 596 | void set_alloc_size(juint n) {} |
duke@435 | 597 | |
duke@435 | 598 | // Use this to return the size of an instance in heap words: |
duke@435 | 599 | int size_helper() const { |
duke@435 | 600 | return layout_helper_to_size_helper(layout_helper()); |
duke@435 | 601 | } |
duke@435 | 602 | |
duke@435 | 603 | // This bit is initialized in classFileParser.cpp. |
duke@435 | 604 | // It is false under any of the following conditions: |
duke@435 | 605 | // - the class is abstract (including any interface) |
duke@435 | 606 | // - the class has a finalizer (if !RegisterFinalizersAtInit) |
duke@435 | 607 | // - the class size is larger than FastAllocateSizeLimit |
duke@435 | 608 | // - the class is java/lang/Class, which cannot be allocated directly |
duke@435 | 609 | bool can_be_fastpath_allocated() const { |
duke@435 | 610 | return !layout_helper_needs_slow_path(layout_helper()); |
duke@435 | 611 | } |
duke@435 | 612 | |
duke@435 | 613 | // Java vtable/itable |
duke@435 | 614 | klassVtable* vtable() const; // return new klassVtable wrapper |
duke@435 | 615 | inline methodOop method_at_vtable(int index); |
duke@435 | 616 | klassItable* itable() const; // return new klassItable wrapper |
duke@435 | 617 | methodOop method_at_itable(klassOop holder, int index, TRAPS); |
duke@435 | 618 | |
duke@435 | 619 | // Garbage collection |
duke@435 | 620 | void oop_follow_contents(oop obj); |
duke@435 | 621 | void follow_static_fields(); |
duke@435 | 622 | void adjust_static_fields(); |
duke@435 | 623 | int oop_adjust_pointers(oop obj); |
duke@435 | 624 | bool object_is_parsable() const { return _init_state != unparsable_by_gc; } |
duke@435 | 625 | // Value of _init_state must be zero (unparsable_by_gc) when klass field is set. |
duke@435 | 626 | |
duke@435 | 627 | void follow_weak_klass_links( |
duke@435 | 628 | BoolObjectClosure* is_alive, OopClosure* keep_alive); |
duke@435 | 629 | void release_C_heap_structures(); |
duke@435 | 630 | |
duke@435 | 631 | // Parallel Scavenge and Parallel Old |
duke@435 | 632 | PARALLEL_GC_DECLS |
duke@435 | 633 | |
duke@435 | 634 | #ifndef SERIALGC |
duke@435 | 635 | // Parallel Scavenge |
duke@435 | 636 | void copy_static_fields(PSPromotionManager* pm); |
duke@435 | 637 | void push_static_fields(PSPromotionManager* pm); |
duke@435 | 638 | |
duke@435 | 639 | // Parallel Old |
duke@435 | 640 | void follow_static_fields(ParCompactionManager* cm); |
duke@435 | 641 | void copy_static_fields(ParCompactionManager* cm); |
duke@435 | 642 | void update_static_fields(); |
duke@435 | 643 | void update_static_fields(HeapWord* beg_addr, HeapWord* end_addr); |
duke@435 | 644 | #endif // SERIALGC |
duke@435 | 645 | |
duke@435 | 646 | // Naming |
duke@435 | 647 | char* signature_name() const; |
duke@435 | 648 | |
duke@435 | 649 | // Iterators |
duke@435 | 650 | int oop_oop_iterate(oop obj, OopClosure* blk) { |
duke@435 | 651 | return oop_oop_iterate_v(obj, blk); |
duke@435 | 652 | } |
duke@435 | 653 | |
duke@435 | 654 | int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) { |
duke@435 | 655 | return oop_oop_iterate_v_m(obj, blk, mr); |
duke@435 | 656 | } |
duke@435 | 657 | |
duke@435 | 658 | #define InstanceKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix) \ |
duke@435 | 659 | int oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk); \ |
duke@435 | 660 | int oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk, \ |
duke@435 | 661 | MemRegion mr); |
duke@435 | 662 | |
duke@435 | 663 | ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DECL) |
duke@435 | 664 | ALL_OOP_OOP_ITERATE_CLOSURES_3(InstanceKlass_OOP_OOP_ITERATE_DECL) |
duke@435 | 665 | |
duke@435 | 666 | void iterate_static_fields(OopClosure* closure); |
duke@435 | 667 | void iterate_static_fields(OopClosure* closure, MemRegion mr); |
duke@435 | 668 | |
duke@435 | 669 | private: |
duke@435 | 670 | // initialization state |
duke@435 | 671 | #ifdef ASSERT |
duke@435 | 672 | void set_init_state(ClassState state); |
duke@435 | 673 | #else |
duke@435 | 674 | void set_init_state(ClassState state) { _init_state = state; } |
duke@435 | 675 | #endif |
duke@435 | 676 | void set_rewritten() { _rewritten = true; } |
duke@435 | 677 | void set_init_thread(Thread *thread) { _init_thread = thread; } |
duke@435 | 678 | |
duke@435 | 679 | u2 idnum_allocated_count() const { return _idnum_allocated_count; } |
duke@435 | 680 | jmethodID* methods_jmethod_ids_acquire() const |
duke@435 | 681 | { return (jmethodID*)OrderAccess::load_ptr_acquire(&_methods_jmethod_ids); } |
duke@435 | 682 | void release_set_methods_jmethod_ids(jmethodID* jmeths) |
duke@435 | 683 | { OrderAccess::release_store_ptr(&_methods_jmethod_ids, jmeths); } |
duke@435 | 684 | |
duke@435 | 685 | int* methods_cached_itable_indices_acquire() const |
duke@435 | 686 | { return (int*)OrderAccess::load_ptr_acquire(&_methods_cached_itable_indices); } |
duke@435 | 687 | void release_set_methods_cached_itable_indices(int* indices) |
duke@435 | 688 | { OrderAccess::release_store_ptr(&_methods_cached_itable_indices, indices); } |
duke@435 | 689 | |
duke@435 | 690 | inline typeArrayOop get_method_annotations_from(int idnum, objArrayOop annos); |
duke@435 | 691 | void set_annotations(objArrayOop md, objArrayOop* md_p) { oop_store_without_check((oop*)md_p, (oop)md); } |
duke@435 | 692 | void set_methods_annotations_of(int idnum, typeArrayOop anno, objArrayOop* md_p); |
duke@435 | 693 | |
duke@435 | 694 | // Offsets for memory management |
duke@435 | 695 | oop* adr_array_klasses() const { return (oop*)&this->_array_klasses;} |
duke@435 | 696 | oop* adr_methods() const { return (oop*)&this->_methods;} |
duke@435 | 697 | oop* adr_method_ordering() const { return (oop*)&this->_method_ordering;} |
duke@435 | 698 | oop* adr_local_interfaces() const { return (oop*)&this->_local_interfaces;} |
duke@435 | 699 | oop* adr_transitive_interfaces() const { return (oop*)&this->_transitive_interfaces;} |
duke@435 | 700 | oop* adr_fields() const { return (oop*)&this->_fields;} |
duke@435 | 701 | oop* adr_constants() const { return (oop*)&this->_constants;} |
duke@435 | 702 | oop* adr_class_loader() const { return (oop*)&this->_class_loader;} |
duke@435 | 703 | oop* adr_protection_domain() const { return (oop*)&this->_protection_domain;} |
duke@435 | 704 | oop* adr_signers() const { return (oop*)&this->_signers;} |
duke@435 | 705 | oop* adr_source_file_name() const { return (oop*)&this->_source_file_name;} |
duke@435 | 706 | oop* adr_source_debug_extension() const { return (oop*)&this->_source_debug_extension;} |
duke@435 | 707 | oop* adr_inner_classes() const { return (oop*)&this->_inner_classes;} |
duke@435 | 708 | oop* adr_implementors() const { return (oop*)&this->_implementors[0];} |
duke@435 | 709 | oop* adr_generic_signature() const { return (oop*)&this->_generic_signature;} |
duke@435 | 710 | oop* adr_methods_jmethod_ids() const { return (oop*)&this->_methods_jmethod_ids;} |
duke@435 | 711 | oop* adr_methods_cached_itable_indices() const { return (oop*)&this->_methods_cached_itable_indices;} |
duke@435 | 712 | oop* adr_class_annotations() const { return (oop*)&this->_class_annotations;} |
duke@435 | 713 | oop* adr_fields_annotations() const { return (oop*)&this->_fields_annotations;} |
duke@435 | 714 | oop* adr_methods_annotations() const { return (oop*)&this->_methods_annotations;} |
duke@435 | 715 | oop* adr_methods_parameter_annotations() const { return (oop*)&this->_methods_parameter_annotations;} |
duke@435 | 716 | oop* adr_methods_default_annotations() const { return (oop*)&this->_methods_default_annotations;} |
duke@435 | 717 | |
duke@435 | 718 | // Static methods that are used to implement member methods where an exposed this pointer |
duke@435 | 719 | // is needed due to possible GCs |
duke@435 | 720 | static bool link_class_impl (instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS); |
duke@435 | 721 | static bool verify_code (instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS); |
duke@435 | 722 | static void initialize_impl (instanceKlassHandle this_oop, TRAPS); |
duke@435 | 723 | static void eager_initialize_impl (instanceKlassHandle this_oop); |
duke@435 | 724 | static void set_initialization_state_and_notify_impl (instanceKlassHandle this_oop, ClassState state, TRAPS); |
duke@435 | 725 | static void call_class_initializer_impl (instanceKlassHandle this_oop, TRAPS); |
duke@435 | 726 | static klassOop array_klass_impl (instanceKlassHandle this_oop, bool or_null, int n, TRAPS); |
duke@435 | 727 | static void do_local_static_fields_impl (instanceKlassHandle this_oop, void f(fieldDescriptor* fd, TRAPS), TRAPS); |
duke@435 | 728 | /* jni_id_for_impl for jfieldID only */ |
duke@435 | 729 | static JNIid* jni_id_for_impl (instanceKlassHandle this_oop, int offset); |
duke@435 | 730 | |
duke@435 | 731 | // Returns the array class for the n'th dimension |
duke@435 | 732 | klassOop array_klass_impl(bool or_null, int n, TRAPS); |
duke@435 | 733 | |
duke@435 | 734 | // Returns the array class with this class as element type |
duke@435 | 735 | klassOop array_klass_impl(bool or_null, TRAPS); |
duke@435 | 736 | |
duke@435 | 737 | public: |
duke@435 | 738 | // sharing support |
duke@435 | 739 | virtual void remove_unshareable_info(); |
duke@435 | 740 | void field_names_and_sigs_iterate(OopClosure* closure); |
duke@435 | 741 | |
duke@435 | 742 | // jvm support |
duke@435 | 743 | jint compute_modifier_flags(TRAPS) const; |
duke@435 | 744 | |
duke@435 | 745 | public: |
duke@435 | 746 | // JVMTI support |
duke@435 | 747 | jint jvmti_class_status() const; |
duke@435 | 748 | |
duke@435 | 749 | #ifndef PRODUCT |
duke@435 | 750 | public: |
duke@435 | 751 | // Printing |
duke@435 | 752 | void oop_print_on (oop obj, outputStream* st); |
duke@435 | 753 | void oop_print_value_on(oop obj, outputStream* st); |
duke@435 | 754 | |
duke@435 | 755 | void print_dependent_nmethods(bool verbose = false); |
duke@435 | 756 | bool is_dependent_nmethod(nmethod* nm); |
duke@435 | 757 | #endif |
duke@435 | 758 | |
duke@435 | 759 | public: |
duke@435 | 760 | // Verification |
duke@435 | 761 | const char* internal_name() const; |
duke@435 | 762 | void oop_verify_on(oop obj, outputStream* st); |
duke@435 | 763 | |
duke@435 | 764 | #ifndef PRODUCT |
duke@435 | 765 | static void verify_class_klass_nonstatic_oop_maps(klassOop k) PRODUCT_RETURN; |
duke@435 | 766 | #endif |
duke@435 | 767 | }; |
duke@435 | 768 | |
duke@435 | 769 | inline methodOop instanceKlass::method_at_vtable(int index) { |
duke@435 | 770 | #ifndef PRODUCT |
duke@435 | 771 | assert(index >= 0, "valid vtable index"); |
duke@435 | 772 | if (DebugVtables) { |
duke@435 | 773 | verify_vtable_index(index); |
duke@435 | 774 | } |
duke@435 | 775 | #endif |
duke@435 | 776 | vtableEntry* ve = (vtableEntry*)start_of_vtable(); |
duke@435 | 777 | return ve[index].method(); |
duke@435 | 778 | } |
duke@435 | 779 | |
duke@435 | 780 | inline typeArrayOop instanceKlass::get_method_annotations_from(int idnum, objArrayOop annos) { |
duke@435 | 781 | if (annos == NULL || annos->length() <= idnum) { |
duke@435 | 782 | return NULL; |
duke@435 | 783 | } |
duke@435 | 784 | return typeArrayOop(annos->obj_at(idnum)); |
duke@435 | 785 | } |
duke@435 | 786 | |
duke@435 | 787 | // for adding methods |
duke@435 | 788 | // UNSET_IDNUM return means no more ids available |
duke@435 | 789 | inline u2 instanceKlass::next_method_idnum() { |
duke@435 | 790 | if (_idnum_allocated_count == constMethodOopDesc::MAX_IDNUM) { |
duke@435 | 791 | return constMethodOopDesc::UNSET_IDNUM; // no more ids available |
duke@435 | 792 | } else { |
duke@435 | 793 | return _idnum_allocated_count++; |
duke@435 | 794 | } |
duke@435 | 795 | } |
duke@435 | 796 | |
duke@435 | 797 | |
duke@435 | 798 | // ValueObjs embedded in klass. Describes where oops are located in instances of this klass. |
duke@435 | 799 | |
duke@435 | 800 | class OopMapBlock VALUE_OBJ_CLASS_SPEC { |
duke@435 | 801 | private: |
duke@435 | 802 | jushort _offset; // Offset of first oop in oop-map block |
duke@435 | 803 | jushort _length; // Length of oop-map block |
duke@435 | 804 | public: |
duke@435 | 805 | // Accessors |
duke@435 | 806 | jushort offset() const { return _offset; } |
duke@435 | 807 | void set_offset(jushort offset) { _offset = offset; } |
duke@435 | 808 | |
duke@435 | 809 | jushort length() const { return _length; } |
duke@435 | 810 | void set_length(jushort length) { _length = length; } |
duke@435 | 811 | }; |
duke@435 | 812 | |
duke@435 | 813 | /* JNIid class for jfieldIDs only */ |
duke@435 | 814 | class JNIid: public CHeapObj { |
duke@435 | 815 | friend class VMStructs; |
duke@435 | 816 | private: |
duke@435 | 817 | klassOop _holder; |
duke@435 | 818 | JNIid* _next; |
duke@435 | 819 | int _offset; |
duke@435 | 820 | #ifdef ASSERT |
duke@435 | 821 | bool _is_static_field_id; |
duke@435 | 822 | #endif |
duke@435 | 823 | |
duke@435 | 824 | public: |
duke@435 | 825 | // Accessors |
duke@435 | 826 | klassOop holder() const { return _holder; } |
duke@435 | 827 | int offset() const { return _offset; } |
duke@435 | 828 | JNIid* next() { return _next; } |
duke@435 | 829 | // Constructor |
duke@435 | 830 | JNIid(klassOop holder, int offset, JNIid* next); |
duke@435 | 831 | // Identifier lookup |
duke@435 | 832 | JNIid* find(int offset); |
duke@435 | 833 | |
duke@435 | 834 | // Garbage collection support |
duke@435 | 835 | oop* holder_addr() { return (oop*)&_holder; } |
duke@435 | 836 | void oops_do(OopClosure* f); |
duke@435 | 837 | static void deallocate(JNIid* id); |
duke@435 | 838 | // Debugging |
duke@435 | 839 | #ifdef ASSERT |
duke@435 | 840 | bool is_static_field_id() const { return _is_static_field_id; } |
duke@435 | 841 | void set_is_static_field_id() { _is_static_field_id = true; } |
duke@435 | 842 | #endif |
duke@435 | 843 | void verify(klassOop holder); |
duke@435 | 844 | }; |
duke@435 | 845 | |
duke@435 | 846 | |
duke@435 | 847 | // If breakpoints are more numerous than just JVMTI breakpoints, |
duke@435 | 848 | // consider compressing this data structure. |
duke@435 | 849 | // It is currently a simple linked list defined in methodOop.hpp. |
duke@435 | 850 | |
duke@435 | 851 | class BreakpointInfo; |
duke@435 | 852 | |
duke@435 | 853 | |
duke@435 | 854 | // A collection point for interesting information about the previous |
duke@435 | 855 | // version(s) of an instanceKlass. This class uses weak references to |
duke@435 | 856 | // the information so that the information may be collected as needed |
dcubed@482 | 857 | // by the system. If the information is shared, then a regular |
dcubed@482 | 858 | // reference must be used because a weak reference would be seen as |
dcubed@482 | 859 | // collectible. A GrowableArray of PreviousVersionNodes is attached |
duke@435 | 860 | // to the instanceKlass as needed. See PreviousVersionWalker below. |
duke@435 | 861 | class PreviousVersionNode : public CHeapObj { |
duke@435 | 862 | private: |
dcubed@482 | 863 | // A shared ConstantPool is never collected so we'll always have |
dcubed@482 | 864 | // a reference to it so we can update items in the cache. We'll |
dcubed@482 | 865 | // have a weak reference to a non-shared ConstantPool until all |
dcubed@482 | 866 | // of the methods (EMCP or obsolete) have been collected; the |
dcubed@482 | 867 | // non-shared ConstantPool becomes collectible at that point. |
dcubed@482 | 868 | jobject _prev_constant_pool; // regular or weak reference |
dcubed@482 | 869 | bool _prev_cp_is_weak; // true if not a shared ConstantPool |
dcubed@482 | 870 | |
duke@435 | 871 | // If the previous version of the instanceKlass doesn't have any |
duke@435 | 872 | // EMCP methods, then _prev_EMCP_methods will be NULL. If all the |
duke@435 | 873 | // EMCP methods have been collected, then _prev_EMCP_methods can |
duke@435 | 874 | // have a length of zero. |
duke@435 | 875 | GrowableArray<jweak>* _prev_EMCP_methods; |
duke@435 | 876 | |
duke@435 | 877 | public: |
dcubed@482 | 878 | PreviousVersionNode(jobject prev_constant_pool, bool prev_cp_is_weak, |
duke@435 | 879 | GrowableArray<jweak>* prev_EMCP_methods); |
duke@435 | 880 | ~PreviousVersionNode(); |
dcubed@482 | 881 | jobject prev_constant_pool() const { |
duke@435 | 882 | return _prev_constant_pool; |
duke@435 | 883 | } |
duke@435 | 884 | GrowableArray<jweak>* prev_EMCP_methods() const { |
duke@435 | 885 | return _prev_EMCP_methods; |
duke@435 | 886 | } |
duke@435 | 887 | }; |
duke@435 | 888 | |
duke@435 | 889 | |
duke@435 | 890 | // A Handle-ized version of PreviousVersionNode. |
duke@435 | 891 | class PreviousVersionInfo : public ResourceObj { |
duke@435 | 892 | private: |
duke@435 | 893 | constantPoolHandle _prev_constant_pool_handle; |
duke@435 | 894 | // If the previous version of the instanceKlass doesn't have any |
duke@435 | 895 | // EMCP methods, then _prev_EMCP_methods will be NULL. Since the |
duke@435 | 896 | // methods cannot be collected while we hold a handle, |
duke@435 | 897 | // _prev_EMCP_methods should never have a length of zero. |
duke@435 | 898 | GrowableArray<methodHandle>* _prev_EMCP_method_handles; |
duke@435 | 899 | |
duke@435 | 900 | public: |
duke@435 | 901 | PreviousVersionInfo(PreviousVersionNode *pv_node); |
duke@435 | 902 | ~PreviousVersionInfo(); |
duke@435 | 903 | constantPoolHandle prev_constant_pool_handle() const { |
duke@435 | 904 | return _prev_constant_pool_handle; |
duke@435 | 905 | } |
duke@435 | 906 | GrowableArray<methodHandle>* prev_EMCP_method_handles() const { |
duke@435 | 907 | return _prev_EMCP_method_handles; |
duke@435 | 908 | } |
duke@435 | 909 | }; |
duke@435 | 910 | |
duke@435 | 911 | |
duke@435 | 912 | // Helper object for walking previous versions. This helper cleans up |
duke@435 | 913 | // the Handles that it allocates when the helper object is destroyed. |
duke@435 | 914 | // The PreviousVersionInfo object returned by next_previous_version() |
duke@435 | 915 | // is only valid until a subsequent call to next_previous_version() or |
duke@435 | 916 | // the helper object is destroyed. |
duke@435 | 917 | class PreviousVersionWalker : public StackObj { |
duke@435 | 918 | private: |
duke@435 | 919 | GrowableArray<PreviousVersionNode *>* _previous_versions; |
duke@435 | 920 | int _current_index; |
duke@435 | 921 | // Fields for cleaning up when we are done walking the previous versions: |
duke@435 | 922 | // A HandleMark for the PreviousVersionInfo handles: |
duke@435 | 923 | HandleMark _hm; |
duke@435 | 924 | |
duke@435 | 925 | // It would be nice to have a ResourceMark field in this helper also, |
duke@435 | 926 | // but the ResourceMark code says to be careful to delete handles held |
duke@435 | 927 | // in GrowableArrays _before_ deleting the GrowableArray. Since we |
duke@435 | 928 | // can't guarantee the order in which the fields are destroyed, we |
duke@435 | 929 | // have to let the creator of the PreviousVersionWalker object do |
duke@435 | 930 | // the right thing. Also, adding a ResourceMark here causes an |
duke@435 | 931 | // include loop. |
duke@435 | 932 | |
duke@435 | 933 | // A pointer to the current info object so we can handle the deletes. |
duke@435 | 934 | PreviousVersionInfo * _current_p; |
duke@435 | 935 | |
duke@435 | 936 | public: |
duke@435 | 937 | PreviousVersionWalker(instanceKlass *ik); |
duke@435 | 938 | ~PreviousVersionWalker(); |
duke@435 | 939 | |
duke@435 | 940 | // Return the interesting information for the next previous version |
duke@435 | 941 | // of the klass. Returns NULL if there are no more previous versions. |
duke@435 | 942 | PreviousVersionInfo* next_previous_version(); |
duke@435 | 943 | }; |