1 /* 2 * Copyright (c) 1997, 2022, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_CLASSFILE_JAVACLASSES_HPP 26 #define SHARE_CLASSFILE_JAVACLASSES_HPP 27 28 #include "classfile/vmClasses.hpp" 29 #include "oops/instanceKlass.hpp" 30 #include "oops/oopsHierarchy.hpp" 31 #include "runtime/handles.hpp" 32 #include "utilities/macros.hpp" 33 #include "utilities/vmEnums.hpp" 34 35 class JvmtiThreadState; 36 class RecordComponent; 37 38 #define CHECK_INIT(offset) assert(offset != 0, "should be initialized"); return offset; 39 40 // Interface to java.lang.Object objects 41 42 class java_lang_Object : AllStatic { 43 public: 44 static void register_natives(TRAPS); 45 }; 46 47 // Interface to java.lang.String objects 48 49 // The flags field is a collection of bits representing boolean values used 50 // internally by the VM. 51 #define STRING_INJECTED_FIELDS(macro) \ 52 macro(java_lang_String, flags, byte_signature, false) 53 54 class java_lang_String : AllStatic { 55 private: 56 static int _value_offset; 57 static int _hash_offset; 58 static int _hashIsZero_offset; 59 static int _coder_offset; 60 static int _flags_offset; 61 62 static bool _initialized; 63 64 static Handle basic_create(int length, bool byte_arr, TRAPS); 65 66 static inline void set_coder(oop string, jbyte coder); 67 68 // Bitmasks for values in the injected flags field. 69 static const uint8_t _deduplication_forbidden_mask = 1 << 0; 70 static const uint8_t _deduplication_requested_mask = 1 << 1; 71 72 static int flags_offset() { CHECK_INIT(_flags_offset); } 73 // Return the address of the injected flags field. 74 static inline uint8_t* flags_addr(oop java_string); 75 // Test whether the designated bit of the injected flags field is set. 76 static inline bool is_flag_set(oop java_string, uint8_t flag_mask); 77 // Atomically test and set the designated bit of the injected flags field, 78 // returning true if the bit was already set. 79 static bool test_and_set_flag(oop java_string, uint8_t flag_mask); 80 81 static inline unsigned int hash_code_impl(oop java_string, bool update); 82 83 public: 84 85 // Coders 86 enum Coder { 87 CODER_LATIN1 = 0, 88 CODER_UTF16 = 1 89 }; 90 91 static void compute_offsets(); 92 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 93 94 // Instance creation 95 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS); 96 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS); 97 static Handle create_from_str(const char* utf8_str, TRAPS); 98 static oop create_oop_from_str(const char* utf8_str, TRAPS); 99 static Handle create_from_symbol(Symbol* symbol, TRAPS); 100 static Handle create_from_platform_dependent_str(const char* str, TRAPS); 101 102 static void set_compact_strings(bool value); 103 104 static int value_offset() { CHECK_INIT(_value_offset); } 105 static int coder_offset() { CHECK_INIT(_coder_offset); } 106 107 static inline void set_value_raw(oop string, typeArrayOop buffer); 108 static inline void set_value(oop string, typeArrayOop buffer); 109 110 // Set the deduplication_forbidden flag true. This flag is sticky; once 111 // set it never gets cleared. This is set when a String is interned in 112 // the StringTable, to prevent string deduplication from changing the 113 // String's value array. 114 static inline void set_deduplication_forbidden(oop java_string); 115 116 // Test and set the deduplication_requested flag. Returns the old value 117 // of the flag. This flag is sticky; once set it never gets cleared. 118 // Some GCs may use this flag when deciding whether to request 119 // deduplication of a String, to avoid multiple requests for the same 120 // object. 121 static inline bool test_and_set_deduplication_requested(oop java_string); 122 123 // Accessors 124 static inline typeArrayOop value(oop java_string); 125 static inline typeArrayOop value_no_keepalive(oop java_string); 126 static inline bool hash_is_set(oop string); 127 static inline bool is_latin1(oop java_string); 128 static inline bool deduplication_forbidden(oop java_string); 129 static inline bool deduplication_requested(oop java_string); 130 static inline int length(oop java_string); 131 static inline int length(oop java_string, typeArrayOop string_value); 132 static int utf8_length(oop java_string); 133 static int utf8_length(oop java_string, typeArrayOop string_value); 134 135 // String converters 136 static char* as_utf8_string(oop java_string); 137 static char* as_utf8_string(oop java_string, int& length); 138 static char* as_utf8_string_full(oop java_string, char* buf, int buflen, int& length); 139 static char* as_utf8_string(oop java_string, char* buf, int buflen); 140 static char* as_utf8_string(oop java_string, int start, int len); 141 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen); 142 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen); 143 static char* as_platform_dependent_str(Handle java_string, TRAPS); 144 static jchar* as_unicode_string(oop java_string, int& length, TRAPS); 145 static jchar* as_unicode_string_or_null(oop java_string, int& length); 146 // produce an ascii string with all other values quoted using \u#### 147 static char* as_quoted_ascii(oop java_string); 148 149 // Compute the hash value for a java.lang.String object which would 150 // contain the characters passed in. 151 // 152 // As the hash value used by the String object itself, in 153 // String.hashCode(). This value is normally calculated in Java code 154 // in the String.hashCode method(), but is precomputed for String 155 // objects in the shared archive file. 156 // hash P(31) from Kernighan & Ritchie 157 // 158 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode(). 159 static unsigned int hash_code(const jchar* s, int len) { 160 unsigned int h = 0; 161 while (len-- > 0) { 162 h = 31*h + (unsigned int) *s; 163 s++; 164 } 165 return h; 166 } 167 168 static unsigned int hash_code(const jbyte* s, int len) { 169 unsigned int h = 0; 170 while (len-- > 0) { 171 h = 31*h + (((unsigned int) *s) & 0xFF); 172 s++; 173 } 174 return h; 175 } 176 177 static unsigned int hash_code(oop java_string); 178 static unsigned int hash_code_noupdate(oop java_string); 179 180 static bool equals(oop java_string, const jchar* chars, int len); 181 static bool equals(oop str1, oop str2); 182 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2); 183 184 // Conversion between '.' and '/' formats, and allocate a String from the result. 185 static Handle externalize_classname(Symbol* java_name, TRAPS); 186 187 // Conversion 188 static Symbol* as_symbol(oop java_string); 189 static Symbol* as_symbol_or_null(oop java_string); 190 191 // Tester 192 static inline bool is_instance(oop obj); 193 194 // Debugging 195 static void print(oop java_string, outputStream* st); 196 friend class JavaClasses; 197 friend class StringTable; 198 }; 199 200 201 // Interface to java.lang.Class objects 202 203 #define CLASS_INJECTED_FIELDS(macro) \ 204 macro(java_lang_Class, klass, intptr_signature, false) \ 205 macro(java_lang_Class, array_klass, intptr_signature, false) \ 206 macro(java_lang_Class, oop_size, int_signature, false) \ 207 macro(java_lang_Class, static_oop_field_count, int_signature, false) \ 208 macro(java_lang_Class, protection_domain, object_signature, false) \ 209 macro(java_lang_Class, signers, object_signature, false) \ 210 macro(java_lang_Class, source_file, object_signature, false) \ 211 212 class java_lang_Class : AllStatic { 213 friend class VMStructs; 214 friend class JVMCIVMStructs; 215 216 private: 217 218 // The fake offsets are added by the class loader when java.lang.Class is loaded 219 220 static int _klass_offset; 221 static int _array_klass_offset; 222 223 static int _oop_size_offset; 224 static int _static_oop_field_count_offset; 225 226 static int _protection_domain_offset; 227 static int _signers_offset; 228 static int _class_loader_offset; 229 static int _module_offset; 230 static int _component_mirror_offset; 231 static int _primary_mirror_offset; 232 static int _secondary_mirror_offset; 233 234 static int _name_offset; 235 static int _source_file_offset; 236 static int _classData_offset; 237 static int _classRedefinedCount_offset; 238 239 static bool _offsets_computed; 240 241 static GrowableArray<Klass*>* _fixup_mirror_list; 242 static GrowableArray<Klass*>* _fixup_module_field_list; 243 244 static void set_protection_domain(oop java_class, oop protection_domain); 245 static void set_class_loader(oop java_class, oop class_loader); 246 static void set_component_mirror(oop java_class, oop comp_mirror); 247 static void set_primary_mirror(oop java_class, oop comp_mirror); 248 static void set_secondary_mirror(oop java_class, oop comp_mirror); 249 250 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, 251 Handle classData, TRAPS); 252 static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module); 253 public: 254 static void allocate_fixup_lists(); 255 static void compute_offsets(); 256 257 // Instance creation 258 static void create_mirror(Klass* k, Handle class_loader, Handle module, 259 Handle protection_domain, Handle classData, TRAPS); 260 static void fixup_mirror(Klass* k, TRAPS); 261 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); 262 static oop create_secondary_mirror(Klass* k, Handle mirror, TRAPS); 263 264 // Archiving 265 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 266 static void archive_basic_type_mirrors() NOT_CDS_JAVA_HEAP_RETURN; 267 static oop archive_mirror(Klass* k) NOT_CDS_JAVA_HEAP_RETURN_(NULL); 268 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror) 269 NOT_CDS_JAVA_HEAP_RETURN_(NULL); 270 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module, 271 Handle protection_domain, 272 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false); 273 274 static void fixup_module_field(Klass* k, Handle module); 275 276 // Conversion 277 static Klass* as_Klass(oop java_class); 278 static void set_klass(oop java_class, Klass* klass); 279 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL); 280 static Symbol* as_signature(oop java_class, bool intern_if_not_found); 281 static void print_signature(oop java_class, outputStream *st); 282 static const char* as_external_name(oop java_class); 283 // Testing 284 static bool is_instance(oop obj); 285 286 static bool is_primitive(oop java_class); 287 static BasicType primitive_type(oop java_class); 288 static oop primitive_mirror(BasicType t); 289 // JVM_NewArray support 290 static Klass* array_klass_acquire(oop java_class); 291 static void release_set_array_klass(oop java_class, Klass* klass); 292 // compiler support for class operations 293 static int klass_offset() { CHECK_INIT(_klass_offset); } 294 static int array_klass_offset() { CHECK_INIT(_array_klass_offset); } 295 static int component_mirror_offset() { CHECK_INIT(_component_mirror_offset); } 296 static int primary_mirror_offset() { CHECK_INIT(_primary_mirror_offset); } 297 static int secondary_mirror_offset() { CHECK_INIT(_secondary_mirror_offset); } 298 // Support for classRedefinedCount field 299 static int classRedefinedCount(oop the_class_mirror); 300 static void set_classRedefinedCount(oop the_class_mirror, int value); 301 302 // Support for embedded per-class oops 303 static oop protection_domain(oop java_class); 304 static oop component_mirror(oop java_class); 305 static oop primary_mirror(oop java_class); 306 static oop secondary_mirror(oop java_class); 307 static bool is_primary_mirror(oop java_class); 308 static bool is_secondary_mirror(oop java_class); 309 310 static objArrayOop signers(oop java_class); 311 static void set_signers(oop java_class, objArrayOop signers); 312 static oop class_data(oop java_class); 313 static void set_class_data(oop java_class, oop classData); 314 315 static oop class_loader(oop java_class); 316 static void set_module(oop java_class, oop module); 317 static oop module(oop java_class); 318 319 static oop name(Handle java_class, TRAPS); 320 321 static oop source_file(oop java_class); 322 static void set_source_file(oop java_class, oop source_file); 323 324 static size_t oop_size(oop java_class); 325 static void set_oop_size(HeapWord* java_class, size_t size); 326 static int static_oop_field_count(oop java_class); 327 static void set_static_oop_field_count(oop java_class, int size); 328 329 static GrowableArray<Klass*>* fixup_mirror_list() { 330 return _fixup_mirror_list; 331 } 332 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) { 333 _fixup_mirror_list = v; 334 } 335 336 static GrowableArray<Klass*>* fixup_module_field_list() { 337 return _fixup_module_field_list; 338 } 339 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) { 340 _fixup_module_field_list = v; 341 } 342 343 // Debugging 344 friend class JavaClasses; 345 }; 346 347 // Interface to java.lang.Thread objects 348 349 #define THREAD_INJECTED_FIELDS(macro) \ 350 macro(java_lang_Thread, jvmti_thread_state, intptr_signature, false) \ 351 JFR_ONLY(macro(java_lang_Thread, jfr_epoch, short_signature, false)) 352 353 class java_lang_Thread : AllStatic { 354 friend class java_lang_VirtualThread; 355 private: 356 // Note that for this class the layout changed between JDK1.2 and JDK1.3, 357 // so we compute the offsets at startup rather than hard-wiring them. 358 static int _holder_offset; 359 static int _name_offset; 360 static int _contextClassLoader_offset; 361 static int _inheritedAccessControlContext_offset; 362 static int _eetop_offset; 363 static int _jvmti_thread_state_offset; 364 static int _interrupted_offset; 365 static int _tid_offset; 366 static int _continuation_offset; 367 static int _park_blocker_offset; 368 static int _scopedValueBindings_offset; 369 JFR_ONLY(static int _jfr_epoch_offset;) 370 371 static void compute_offsets(); 372 373 public: 374 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 375 376 // Returns the JavaThread associated with the thread obj 377 static JavaThread* thread(oop java_thread); 378 // Set JavaThread for instance 379 static void set_thread(oop java_thread, JavaThread* thread); 380 // FieldHolder 381 static oop holder(oop java_thread); 382 // Interrupted status 383 static bool interrupted(oop java_thread); 384 static void set_interrupted(oop java_thread, bool val); 385 // Name 386 static oop name(oop java_thread); 387 static void set_name(oop java_thread, oop name); 388 // Priority 389 static ThreadPriority priority(oop java_thread); 390 static void set_priority(oop java_thread, ThreadPriority priority); 391 // Thread group 392 static oop threadGroup(oop java_thread); 393 // Alive (NOTE: this is not really a field, but provides the correct 394 // definition without doing a Java call) 395 static bool is_alive(oop java_thread); 396 // Daemon 397 static bool is_daemon(oop java_thread); 398 static void set_daemon(oop java_thread); 399 // Context ClassLoader 400 static oop context_class_loader(oop java_thread); 401 // Control context 402 static oop inherited_access_control_context(oop java_thread); 403 // Stack size hint 404 static jlong stackSize(oop java_thread); 405 // Thread ID 406 static int64_t thread_id(oop java_thread); 407 static ByteSize thread_id_offset(); 408 // Continuation 409 static inline oop continuation(oop java_thread); 410 411 static JvmtiThreadState* jvmti_thread_state(oop java_thread); 412 static void set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state); 413 414 // Clear all scoped value bindings on error 415 static void clear_scopedValueBindings(oop java_thread); 416 417 // Blocker object responsible for thread parking 418 static oop park_blocker(oop java_thread); 419 420 // Write thread status info to threadStatus field of java.lang.Thread. 421 static void set_thread_status(oop java_thread_oop, JavaThreadStatus status); 422 // Read thread status info from threadStatus field of java.lang.Thread. 423 static JavaThreadStatus get_thread_status(oop java_thread_oop); 424 425 static const char* thread_status_name(oop java_thread_oop); 426 427 // Fill in current stack trace, can cause GC 428 static oop async_get_stack_trace(oop java_thread, TRAPS); 429 430 JFR_ONLY(static u2 jfr_epoch(oop java_thread);) 431 JFR_ONLY(static void set_jfr_epoch(oop java_thread, u2 epoch);) 432 JFR_ONLY(static int jfr_epoch_offset() { CHECK_INIT(_jfr_epoch_offset); }) 433 434 // Debugging 435 friend class JavaClasses; 436 }; 437 438 // Interface to java.lang.Thread$FieldHolder objects 439 440 class java_lang_Thread_FieldHolder : AllStatic { 441 private: 442 static int _group_offset; 443 static int _priority_offset; 444 static int _stackSize_offset; 445 static int _daemon_offset; 446 static int _thread_status_offset; 447 448 static void compute_offsets(); 449 450 public: 451 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 452 453 static oop threadGroup(oop holder); 454 455 static ThreadPriority priority(oop holder); 456 static void set_priority(oop holder, ThreadPriority priority); 457 458 static jlong stackSize(oop holder); 459 460 static bool is_daemon(oop holder); 461 static void set_daemon(oop holder); 462 463 static void set_thread_status(oop holder, JavaThreadStatus); 464 static JavaThreadStatus get_thread_status(oop holder); 465 466 friend class JavaClasses; 467 }; 468 469 // Interface to java.lang.Thread$Constants objects 470 471 class java_lang_Thread_Constants : AllStatic { 472 private: 473 static int _static_VTHREAD_GROUP_offset; 474 static int _static_NOT_SUPPORTED_CLASSLOADER_offset; 475 476 static void compute_offsets(); 477 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 478 479 public: 480 static oop get_VTHREAD_GROUP(); 481 static oop get_NOT_SUPPORTED_CLASSLOADER(); 482 483 friend class JavaClasses; 484 }; 485 486 // Interface to java.lang.ThreadGroup objects 487 488 class java_lang_ThreadGroup : AllStatic { 489 private: 490 static int _parent_offset; 491 static int _name_offset; 492 static int _maxPriority_offset; 493 static int _daemon_offset; 494 495 static void compute_offsets(); 496 public: 497 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 498 499 // parent ThreadGroup 500 static oop parent(oop java_thread_group); 501 // name 502 static const char* name(oop java_thread_group); 503 // maxPriority in group 504 static ThreadPriority maxPriority(oop java_thread_group); 505 // Daemon 506 static bool is_daemon(oop java_thread_group); 507 508 // Debugging 509 friend class JavaClasses; 510 }; 511 512 513 // Interface to java.lang.VirtualThread objects 514 515 class java_lang_VirtualThread : AllStatic { 516 private: 517 static int static_notify_jvmti_events_offset; 518 static int static_vthread_scope_offset; 519 static int _carrierThread_offset; 520 static int _continuation_offset; 521 static int _state_offset; 522 JFR_ONLY(static int _jfr_epoch_offset;) 523 public: 524 enum { 525 NEW = 0, 526 STARTED = 1, 527 RUNNABLE = 2, 528 RUNNING = 3, 529 PARKING = 4, 530 PARKED = 5, 531 PINNED = 6, 532 YIELDING = 7, 533 TERMINATED = 99, 534 535 // can be suspended from scheduling when unmounted 536 SUSPENDED = 1 << 8, 537 RUNNABLE_SUSPENDED = (RUNNABLE | SUSPENDED), 538 PARKED_SUSPENDED = (PARKED | SUSPENDED) 539 }; 540 541 static void compute_offsets(); 542 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 543 544 // Testers 545 static bool is_subclass(Klass* klass) { 546 return klass->is_subclass_of(vmClasses::VirtualThread_klass()); 547 } 548 static bool is_instance(oop obj); 549 550 static oop vthread_scope(); 551 static oop carrier_thread(oop vthread); 552 static oop continuation(oop vthread); 553 static int state(oop vthread); 554 static JavaThreadStatus map_state_to_thread_status(int state); 555 static bool notify_jvmti_events(); 556 static void set_notify_jvmti_events(bool enable); 557 static void init_static_notify_jvmti_events(); 558 }; 559 560 561 // Interface to java.lang.Throwable objects 562 563 class java_lang_Throwable: AllStatic { 564 friend class BacktraceBuilder; 565 friend class BacktraceIterator; 566 567 private: 568 // Trace constants 569 enum { 570 trace_methods_offset = 0, 571 trace_bcis_offset = 1, 572 trace_mirrors_offset = 2, 573 trace_names_offset = 3, 574 trace_conts_offset = 4, 575 trace_next_offset = 5, 576 trace_hidden_offset = 6, 577 trace_size = 7, 578 trace_chunk_size = 32 579 }; 580 581 static int _backtrace_offset; 582 static int _detailMessage_offset; 583 static int _stackTrace_offset; 584 static int _depth_offset; 585 static int _cause_offset; 586 static int _static_unassigned_stacktrace_offset; 587 588 // StackTrace (programmatic access, new since 1.4) 589 static void clear_stacktrace(oop throwable); 590 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) 591 static void set_stacktrace(oop throwable, oop st_element_array); 592 static oop unassigned_stacktrace(); 593 594 public: 595 // Backtrace 596 static oop backtrace(oop throwable); 597 static void set_backtrace(oop throwable, oop value); 598 static int depth(oop throwable); 599 static void set_depth(oop throwable, int value); 600 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); } 601 // Message 602 static oop message(oop throwable); 603 static oop cause(oop throwable); 604 static void set_message(oop throwable, oop value); 605 static Symbol* detail_message(oop throwable); 606 static void print_stack_element(outputStream *st, Method* method, int bci); 607 608 static void compute_offsets(); 609 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 610 611 // Allocate space for backtrace (created but stack trace not filled in) 612 static void allocate_backtrace(Handle throwable, TRAPS); 613 // Fill in current stack trace for throwable with preallocated backtrace (no GC) 614 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); 615 // Fill in current stack trace, can cause GC 616 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS); 617 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle()); 618 619 // Programmatic access to stack trace 620 static void get_stack_trace_elements(int depth, Handle backtrace, objArrayHandle stack_trace, TRAPS); 621 622 // For recreating class initialization error exceptions. 623 static Handle get_cause_with_stack_trace(Handle throwable, TRAPS); 624 625 // Printing 626 static void print(oop throwable, outputStream* st); 627 static void print_stack_trace(Handle throwable, outputStream* st); 628 static void java_printStackTrace(Handle throwable, TRAPS); 629 // Debugging 630 friend class JavaClasses; 631 // Gets the method and bci of the top frame (TOS). Returns false if this failed. 632 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci); 633 }; 634 635 636 // Interface to java.lang.reflect.AccessibleObject objects 637 638 class java_lang_reflect_AccessibleObject: AllStatic { 639 private: 640 // Note that to reduce dependencies on the JDK we compute these 641 // offsets at run-time. 642 static int _override_offset; 643 644 static void compute_offsets(); 645 646 public: 647 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 648 649 // Accessors 650 static jboolean override(oop reflect); 651 static void set_override(oop reflect, jboolean value); 652 653 // Debugging 654 friend class JavaClasses; 655 }; 656 657 658 // Interface to java.lang.reflect.Method objects 659 660 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { 661 private: 662 // Note that to reduce dependencies on the JDK we compute these 663 // offsets at run-time. 664 static int _clazz_offset; 665 static int _name_offset; 666 static int _returnType_offset; 667 static int _parameterTypes_offset; 668 static int _exceptionTypes_offset; 669 static int _slot_offset; 670 static int _modifiers_offset; 671 static int _signature_offset; 672 static int _annotations_offset; 673 static int _parameter_annotations_offset; 674 static int _annotation_default_offset; 675 676 static void compute_offsets(); 677 public: 678 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 679 680 // Allocation 681 static Handle create(TRAPS); 682 683 // Accessors 684 static oop clazz(oop reflect); 685 static void set_clazz(oop reflect, oop value); 686 687 static void set_name(oop method, oop value); 688 689 static oop return_type(oop method); 690 static void set_return_type(oop method, oop value); 691 692 static oop parameter_types(oop method); 693 static void set_parameter_types(oop method, oop value); 694 695 static int slot(oop reflect); 696 static void set_slot(oop reflect, int value); 697 698 static void set_exception_types(oop method, oop value); 699 static void set_modifiers(oop method, int value); 700 static void set_signature(oop method, oop value); 701 static void set_annotations(oop method, oop value); 702 static void set_parameter_annotations(oop method, oop value); 703 static void set_annotation_default(oop method, oop value); 704 705 // Debugging 706 friend class JavaClasses; 707 }; 708 709 710 // Interface to java.lang.reflect.Constructor objects 711 712 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { 713 private: 714 // Note that to reduce dependencies on the JDK we compute these 715 // offsets at run-time. 716 static int _clazz_offset; 717 static int _parameterTypes_offset; 718 static int _exceptionTypes_offset; 719 static int _slot_offset; 720 static int _modifiers_offset; 721 static int _signature_offset; 722 static int _annotations_offset; 723 static int _parameter_annotations_offset; 724 725 static void compute_offsets(); 726 public: 727 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 728 729 // Allocation 730 static Handle create(TRAPS); 731 732 // Accessors 733 static oop clazz(oop reflect); 734 static void set_clazz(oop reflect, oop value); 735 736 static oop parameter_types(oop constructor); 737 static void set_parameter_types(oop constructor, oop value); 738 739 static int slot(oop reflect); 740 static void set_slot(oop reflect, int value); 741 742 static void set_exception_types(oop constructor, oop value); 743 static void set_modifiers(oop constructor, int value); 744 static void set_signature(oop constructor, oop value); 745 static void set_annotations(oop constructor, oop value); 746 static void set_parameter_annotations(oop method, oop value); 747 748 // Debugging 749 friend class JavaClasses; 750 }; 751 752 753 // Interface to java.lang.reflect.Field objects 754 755 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { 756 private: 757 // Note that to reduce dependencies on the JDK we compute these 758 // offsets at run-time. 759 static int _clazz_offset; 760 static int _name_offset; 761 static int _type_offset; 762 static int _slot_offset; 763 static int _modifiers_offset; 764 static int _trusted_final_offset; 765 static int _signature_offset; 766 static int _annotations_offset; 767 768 static void compute_offsets(); 769 770 public: 771 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 772 773 // Allocation 774 static Handle create(TRAPS); 775 776 // Accessors 777 static oop clazz(oop reflect); 778 static void set_clazz(oop reflect, oop value); 779 780 static oop name(oop field); 781 static void set_name(oop field, oop value); 782 783 static oop type(oop field); 784 static void set_type(oop field, oop value); 785 786 static int slot(oop reflect); 787 static void set_slot(oop reflect, int value); 788 789 static int modifiers(oop field); 790 static void set_modifiers(oop field, int value); 791 792 static void set_trusted_final(oop field); 793 794 static void set_signature(oop constructor, oop value); 795 static void set_annotations(oop constructor, oop value); 796 797 // Debugging 798 friend class JavaClasses; 799 }; 800 801 class java_lang_reflect_Parameter { 802 private: 803 // Note that to reduce dependencies on the JDK we compute these 804 // offsets at run-time. 805 static int _name_offset; 806 static int _modifiers_offset; 807 static int _index_offset; 808 static int _executable_offset; 809 810 static void compute_offsets(); 811 812 public: 813 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 814 815 // Allocation 816 static Handle create(TRAPS); 817 818 // Accessors 819 static oop name(oop field); 820 static void set_name(oop field, oop value); 821 822 static int index(oop reflect); 823 static void set_index(oop reflect, int value); 824 825 static int modifiers(oop reflect); 826 static void set_modifiers(oop reflect, int value); 827 828 static oop executable(oop constructor); 829 static void set_executable(oop constructor, oop value); 830 831 friend class JavaClasses; 832 }; 833 834 #define MODULE_INJECTED_FIELDS(macro) \ 835 macro(java_lang_Module, module_entry, intptr_signature, false) 836 837 class java_lang_Module { 838 private: 839 static int _loader_offset; 840 static int _name_offset; 841 static int _module_entry_offset; 842 843 static void compute_offsets(); 844 845 public: 846 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 847 848 // Allocation 849 static Handle create(Handle loader, Handle module_name, TRAPS); 850 851 // Testers 852 static bool is_instance(oop obj); 853 854 // Accessors 855 static oop loader(oop module); 856 static void set_loader(oop module, oop value); 857 858 static oop name(oop module); 859 static void set_name(oop module, oop value); 860 861 static ModuleEntry* module_entry(oop module); 862 static ModuleEntry* module_entry_raw(oop module); 863 static void set_module_entry(oop module, ModuleEntry* module_entry); 864 865 friend class JavaClasses; 866 }; 867 868 // Interface to jdk.internal.reflect.ConstantPool objects 869 class reflect_ConstantPool { 870 private: 871 // Note that to reduce dependencies on the JDK we compute these 872 // offsets at run-time. 873 static int _oop_offset; 874 875 static void compute_offsets(); 876 877 public: 878 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 879 880 // Allocation 881 static Handle create(TRAPS); 882 883 // Accessors 884 static void set_cp(oop reflect, ConstantPool* value); 885 static int oop_offset() { CHECK_INIT(_oop_offset); } 886 887 static ConstantPool* get_cp(oop reflect); 888 889 // Debugging 890 friend class JavaClasses; 891 }; 892 893 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects 894 class reflect_UnsafeStaticFieldAccessorImpl { 895 private: 896 static int _base_offset; 897 static void compute_offsets(); 898 899 public: 900 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 901 902 static int base_offset() { CHECK_INIT(_base_offset); } 903 904 // Debugging 905 friend class JavaClasses; 906 }; 907 908 // Interface to java.lang primitive type boxing objects: 909 // - java.lang.Boolean 910 // - java.lang.Character 911 // - java.lang.Float 912 // - java.lang.Double 913 // - java.lang.Byte 914 // - java.lang.Short 915 // - java.lang.Integer 916 // - java.lang.Long 917 918 // This could be separated out into 8 individual classes. 919 920 class java_lang_boxing_object: AllStatic { 921 private: 922 static int _value_offset; 923 static int _long_value_offset; 924 925 static void compute_offsets(); 926 static oop initialize_and_allocate(BasicType type, TRAPS); 927 public: 928 // Allocation. Returns a boxed value, or NULL for invalid type. 929 static oop create(BasicType type, jvalue* value, TRAPS); 930 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. 931 static BasicType get_value(oop box, jvalue* value); 932 static BasicType set_value(oop box, jvalue* value); 933 static BasicType basic_type(oop box); 934 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } 935 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } 936 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } 937 static void print(BasicType type, jvalue* value, outputStream* st); 938 939 static int value_offset(BasicType type) { 940 return is_double_word_type(type) ? _long_value_offset : _value_offset; 941 } 942 943 static void serialize_offsets(SerializeClosure* f); 944 945 // Debugging 946 friend class JavaClasses; 947 }; 948 949 950 951 // Interface to java.lang.ref.Reference objects 952 953 class java_lang_ref_Reference: AllStatic { 954 static int _referent_offset; 955 static int _queue_offset; 956 static int _next_offset; 957 static int _discovered_offset; 958 959 static bool _offsets_initialized; 960 961 public: 962 // Accessors 963 static inline oop weak_referent_no_keepalive(oop ref); 964 static inline oop weak_referent(oop ref); 965 static inline oop phantom_referent_no_keepalive(oop ref); 966 static inline oop unknown_referent_no_keepalive(oop ref); 967 static inline void clear_referent(oop ref); 968 static inline void clear_referent_raw(oop ref); 969 static inline HeapWord* referent_addr_raw(oop ref); 970 static inline oop next(oop ref); 971 static inline void set_next(oop ref, oop value); 972 static inline void set_next_raw(oop ref, oop value); 973 static inline HeapWord* next_addr_raw(oop ref); 974 static inline oop discovered(oop ref); 975 static inline void set_discovered(oop ref, oop value); 976 static inline void set_discovered_raw(oop ref, oop value); 977 static inline HeapWord* discovered_addr_raw(oop ref); 978 static bool is_referent_field(oop obj, ptrdiff_t offset); 979 static inline bool is_final(oop ref); 980 static inline bool is_phantom(oop ref); 981 static inline bool is_weak(oop ref); 982 static inline bool is_soft(oop ref); 983 984 static int referent_offset() { CHECK_INIT(_referent_offset); } 985 static int queue_offset() { CHECK_INIT(_queue_offset); } 986 static int next_offset() { CHECK_INIT(_next_offset); } 987 static int discovered_offset() { CHECK_INIT(_discovered_offset); } 988 989 static void compute_offsets(); 990 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 991 }; 992 993 994 // Interface to java.lang.ref.SoftReference objects 995 996 class java_lang_ref_SoftReference: public java_lang_ref_Reference { 997 static int _timestamp_offset; 998 static int _static_clock_offset; 999 1000 public: 1001 // Accessors 1002 static jlong timestamp(oop ref); 1003 1004 // Accessors for statics 1005 static jlong clock(); 1006 static void set_clock(jlong value); 1007 1008 static void compute_offsets(); 1009 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1010 }; 1011 1012 // Interface to java.lang.invoke.MethodHandle objects 1013 1014 class java_lang_invoke_MethodHandle: AllStatic { 1015 friend class JavaClasses; 1016 1017 private: 1018 static int _type_offset; // the MethodType of this MH 1019 static int _form_offset; // the LambdaForm of this MH 1020 1021 static void compute_offsets(); 1022 1023 public: 1024 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1025 1026 // Accessors 1027 static oop type(oop mh); 1028 static void set_type(oop mh, oop mtype); 1029 1030 static oop form(oop mh); 1031 static void set_form(oop mh, oop lform); 1032 1033 // Testers 1034 static bool is_subclass(Klass* klass) { 1035 return klass->is_subclass_of(vmClasses::MethodHandle_klass()); 1036 } 1037 static bool is_instance(oop obj); 1038 1039 // Accessors for code generation: 1040 static int type_offset() { CHECK_INIT(_type_offset); } 1041 static int form_offset() { CHECK_INIT(_form_offset); } 1042 }; 1043 1044 // Interface to java.lang.invoke.DirectMethodHandle objects 1045 1046 class java_lang_invoke_DirectMethodHandle: AllStatic { 1047 friend class JavaClasses; 1048 1049 private: 1050 static int _member_offset; // the MemberName of this DMH 1051 1052 static void compute_offsets(); 1053 1054 public: 1055 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1056 1057 // Accessors 1058 static oop member(oop mh); 1059 1060 // Testers 1061 static bool is_subclass(Klass* klass) { 1062 return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass()); 1063 } 1064 static bool is_instance(oop obj); 1065 1066 // Accessors for code generation: 1067 static int member_offset() { CHECK_INIT(_member_offset); } 1068 }; 1069 1070 // Interface to java.lang.invoke.LambdaForm objects 1071 // (These are a private interface for managing adapter code generation.) 1072 1073 class java_lang_invoke_LambdaForm: AllStatic { 1074 friend class JavaClasses; 1075 1076 private: 1077 static int _vmentry_offset; // type is MemberName 1078 1079 static void compute_offsets(); 1080 1081 public: 1082 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1083 1084 // Accessors 1085 static oop vmentry(oop lform); 1086 1087 // Testers 1088 static bool is_subclass(Klass* klass) { 1089 return vmClasses::LambdaForm_klass() != NULL && 1090 klass->is_subclass_of(vmClasses::LambdaForm_klass()); 1091 } 1092 static bool is_instance(oop obj); 1093 1094 // Accessors for code generation: 1095 static int vmentry_offset() { CHECK_INIT(_vmentry_offset); } 1096 }; 1097 1098 // Interface to java.lang.invoke.NativeEntryPoint objects 1099 // (These are a private interface for managing adapter code generation.) 1100 1101 class jdk_internal_foreign_abi_NativeEntryPoint: AllStatic { 1102 friend class JavaClasses; 1103 1104 private: 1105 static int _method_type_offset; 1106 static int _downcall_stub_address_offset; 1107 1108 static void compute_offsets(); 1109 1110 public: 1111 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1112 1113 // Accessors 1114 static oop method_type(oop entry); 1115 static jlong downcall_stub_address(oop entry); 1116 1117 // Testers 1118 static bool is_subclass(Klass* klass) { 1119 return vmClasses::NativeEntryPoint_klass() != NULL && 1120 klass->is_subclass_of(vmClasses::NativeEntryPoint_klass()); 1121 } 1122 static bool is_instance(oop obj); 1123 1124 // Accessors for code generation: 1125 static int method_type_offset_in_bytes() { return _method_type_offset; } 1126 static int downcall_stub_address_offset_in_bytes() { return _downcall_stub_address_offset; } 1127 }; 1128 1129 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic { 1130 friend class JavaClasses; 1131 1132 private: 1133 static int _inputStorage_offset; 1134 static int _outputStorage_offset; 1135 static int _volatileStorage_offset; 1136 static int _stackAlignment_offset; 1137 static int _shadowSpace_offset; 1138 static int _scratch1_offset; 1139 static int _scratch2_offset; 1140 1141 static void compute_offsets(); 1142 1143 public: 1144 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1145 1146 // Accessors 1147 static objArrayOop inputStorage(oop entry); 1148 static objArrayOop outputStorage(oop entry); 1149 static objArrayOop volatileStorage(oop entry); 1150 static jint stackAlignment(oop entry); 1151 static jint shadowSpace(oop entry); 1152 static oop scratch1(oop entry); 1153 static oop scratch2(oop entry); 1154 1155 // Testers 1156 static bool is_subclass(Klass* klass) { 1157 return vmClasses::ABIDescriptor_klass() != NULL && 1158 klass->is_subclass_of(vmClasses::ABIDescriptor_klass()); 1159 } 1160 static bool is_instance(oop obj); 1161 }; 1162 1163 class jdk_internal_foreign_abi_VMStorage: AllStatic { 1164 friend class JavaClasses; 1165 1166 private: 1167 static int _type_offset; 1168 static int _indexOrOffset_offset; 1169 static int _segmentMaskOrSize_offset; 1170 static int _debugName_offset; 1171 1172 static void compute_offsets(); 1173 1174 public: 1175 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1176 1177 // Accessors 1178 static jbyte type(oop entry); 1179 static jint index_or_offset(oop entry); 1180 static jshort segment_mask_or_size(oop entry); 1181 static oop debugName(oop entry); 1182 1183 // Testers 1184 static bool is_subclass(Klass* klass) { 1185 return vmClasses::VMStorage_klass() != NULL && 1186 klass->is_subclass_of(vmClasses::VMStorage_klass()); 1187 } 1188 static bool is_instance(oop obj); 1189 }; 1190 1191 class jdk_internal_foreign_abi_CallConv: AllStatic { 1192 friend class JavaClasses; 1193 1194 private: 1195 static int _argRegs_offset; 1196 static int _retRegs_offset; 1197 1198 static void compute_offsets(); 1199 1200 public: 1201 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1202 1203 // Accessors 1204 static objArrayOop argRegs(oop entry); 1205 static objArrayOop retRegs(oop entry); 1206 1207 // Testers 1208 static bool is_subclass(Klass* klass) { 1209 return vmClasses::CallConv_klass() != NULL && 1210 klass->is_subclass_of(vmClasses::CallConv_klass()); 1211 } 1212 static bool is_instance(oop obj); 1213 }; 1214 1215 // Interface to java.lang.invoke.MemberName objects 1216 // (These are a private interface for Java code to query the class hierarchy.) 1217 1218 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \ 1219 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \ 1220 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false) 1221 1222 class java_lang_invoke_ResolvedMethodName : AllStatic { 1223 friend class JavaClasses; 1224 1225 static int _vmtarget_offset; 1226 static int _vmholder_offset; 1227 1228 static void compute_offsets(); 1229 public: 1230 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1231 1232 static int vmtarget_offset() { CHECK_INIT(_vmtarget_offset); } 1233 1234 static Method* vmtarget(oop resolved_method); 1235 static void set_vmtarget(oop resolved_method, Method* method); 1236 1237 static void set_vmholder(oop resolved_method, oop holder); 1238 1239 // find or create resolved member name 1240 static oop find_resolved_method(const methodHandle& m, TRAPS); 1241 1242 static bool is_instance(oop resolved_method); 1243 }; 1244 1245 1246 #define MEMBERNAME_INJECTED_FIELDS(macro) \ 1247 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) 1248 1249 1250 class java_lang_invoke_MemberName: AllStatic { 1251 friend class JavaClasses; 1252 1253 private: 1254 // From java.lang.invoke.MemberName: 1255 // private Class<?> clazz; // class in which the method is defined 1256 // private String name; // may be null if not yet materialized 1257 // private Object type; // may be null if not yet materialized 1258 // private int flags; // modifier bits; see reflect.Modifier 1259 // private ResolvedMethodName method; // holds VM-specific target value 1260 // private intptr_t vmindex; // member index within class or interface 1261 static int _clazz_offset; 1262 static int _name_offset; 1263 static int _type_offset; 1264 static int _flags_offset; 1265 static int _method_offset; 1266 static int _vmindex_offset; 1267 1268 static void compute_offsets(); 1269 1270 public: 1271 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1272 // Accessors 1273 static oop clazz(oop mname); 1274 static void set_clazz(oop mname, oop clazz); 1275 1276 static oop type(oop mname); 1277 static void set_type(oop mname, oop type); 1278 1279 static oop name(oop mname); 1280 static void set_name(oop mname, oop name); 1281 1282 static int flags(oop mname); 1283 static void set_flags(oop mname, int flags); 1284 1285 // Link through ResolvedMethodName field to get Method* 1286 static Method* vmtarget(oop mname); 1287 static void set_method(oop mname, oop method); 1288 1289 static intptr_t vmindex(oop mname); 1290 static void set_vmindex(oop mname, intptr_t index); 1291 1292 // Testers 1293 static bool is_subclass(Klass* klass) { 1294 return klass->is_subclass_of(vmClasses::MemberName_klass()); 1295 } 1296 static bool is_instance(oop obj); 1297 1298 static bool is_method(oop obj); 1299 1300 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): 1301 enum { 1302 MN_IS_METHOD = 0x00010000, // method (not constructor) 1303 MN_IS_OBJECT_CONSTRUCTOR = 0x00020000, // constructor 1304 MN_IS_FIELD = 0x00040000, // field 1305 MN_IS_TYPE = 0x00080000, // nested type 1306 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected 1307 MN_TRUSTED_FINAL = 0x00200000, // trusted final field 1308 MN_FLATTENED = 0x00400000, // flattened field 1309 MN_REFERENCE_KIND_SHIFT = 24, // refKind 1310 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, 1311 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers: 1312 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes 1313 MN_SEARCH_INTERFACES = 0x00200000, // walk implemented interfaces 1314 MN_NESTMATE_CLASS = 0x00000001, 1315 MN_HIDDEN_CLASS = 0x00000002, 1316 MN_STRONG_LOADER_LINK = 0x00000004, 1317 MN_ACCESS_VM_ANNOTATIONS = 0x00000008, 1318 // Lookup modes 1319 MN_MODULE_MODE = 0x00000010, 1320 MN_UNCONDITIONAL_MODE = 0x00000020, 1321 MN_TRUSTED_MODE = -1 1322 }; 1323 1324 // Accessors for code generation: 1325 static int clazz_offset() { CHECK_INIT(_clazz_offset); } 1326 static int type_offset() { CHECK_INIT(_type_offset); } 1327 static int flags_offset() { CHECK_INIT(_flags_offset); } 1328 static int method_offset() { CHECK_INIT(_method_offset); } 1329 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); } 1330 }; 1331 1332 1333 // Interface to java.lang.invoke.MethodType objects 1334 1335 class java_lang_invoke_MethodType: AllStatic { 1336 friend class JavaClasses; 1337 1338 private: 1339 static int _rtype_offset; 1340 static int _ptypes_offset; 1341 1342 static void compute_offsets(); 1343 1344 public: 1345 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1346 // Accessors 1347 static oop rtype(oop mt); 1348 static objArrayOop ptypes(oop mt); 1349 1350 static oop ptype(oop mt, int index); 1351 static int ptype_count(oop mt); 1352 1353 static int ptype_slot_count(oop mt); // extra counts for long/double 1354 static int rtype_slot_count(oop mt); // extra counts for long/double 1355 1356 static Symbol* as_signature(oop mt, bool intern_if_not_found); 1357 static void print_signature(oop mt, outputStream* st); 1358 1359 static bool is_instance(oop obj); 1360 1361 static bool equals(oop mt1, oop mt2); 1362 1363 // Accessors for code generation: 1364 static int rtype_offset() { CHECK_INIT(_rtype_offset); } 1365 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); } 1366 }; 1367 1368 1369 // Interface to java.lang.invoke.CallSite objects 1370 1371 class java_lang_invoke_CallSite: AllStatic { 1372 friend class JavaClasses; 1373 1374 private: 1375 static int _target_offset; 1376 static int _context_offset; 1377 1378 static void compute_offsets(); 1379 1380 public: 1381 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1382 // Accessors 1383 static oop target( oop site); 1384 static void set_target( oop site, oop target); 1385 static void set_target_volatile( oop site, oop target); 1386 1387 static oop context_no_keepalive(oop site); 1388 1389 // Testers 1390 static bool is_subclass(Klass* klass) { 1391 return klass->is_subclass_of(vmClasses::CallSite_klass()); 1392 } 1393 static bool is_instance(oop obj); 1394 1395 // Accessors for code generation: 1396 static int target_offset() { CHECK_INIT(_target_offset); } 1397 static int context_offset() { CHECK_INIT(_context_offset); } 1398 }; 1399 1400 // Interface to java.lang.invoke.ConstantCallSite objects 1401 1402 class java_lang_invoke_ConstantCallSite: AllStatic { 1403 friend class JavaClasses; 1404 1405 private: 1406 static int _is_frozen_offset; 1407 1408 static void compute_offsets(); 1409 1410 public: 1411 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1412 // Accessors 1413 static jboolean is_frozen(oop site); 1414 1415 // Testers 1416 static bool is_subclass(Klass* klass) { 1417 return klass->is_subclass_of(vmClasses::ConstantCallSite_klass()); 1418 } 1419 static bool is_instance(oop obj); 1420 }; 1421 1422 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects 1423 1424 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \ 1425 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \ 1426 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false) 1427 1428 class DependencyContext; 1429 1430 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic { 1431 friend class JavaClasses; 1432 1433 private: 1434 static int _vmdependencies_offset; 1435 static int _last_cleanup_offset; 1436 1437 static void compute_offsets(); 1438 1439 public: 1440 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1441 // Accessors 1442 static DependencyContext vmdependencies(oop context); 1443 1444 // Testers 1445 static bool is_subclass(Klass* klass) { 1446 return klass->is_subclass_of(vmClasses::Context_klass()); 1447 } 1448 static bool is_instance(oop obj); 1449 }; 1450 1451 // Interface to java.security.AccessControlContext objects 1452 1453 class java_security_AccessControlContext: AllStatic { 1454 private: 1455 // Note that for this class the layout changed between JDK1.2 and JDK1.3, 1456 // so we compute the offsets at startup rather than hard-wiring them. 1457 static int _context_offset; 1458 static int _privilegedContext_offset; 1459 static int _isPrivileged_offset; 1460 static int _isAuthorized_offset; 1461 1462 static void compute_offsets(); 1463 public: 1464 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1465 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); 1466 1467 // Debugging/initialization 1468 friend class JavaClasses; 1469 }; 1470 1471 1472 // Interface to java.lang.ClassLoader objects 1473 1474 #define CLASSLOADER_INJECTED_FIELDS(macro) \ 1475 macro(java_lang_ClassLoader, loader_data, intptr_signature, false) 1476 1477 class java_lang_ClassLoader : AllStatic { 1478 private: 1479 static int _loader_data_offset; 1480 static int _parent_offset; 1481 static int _parallelCapable_offset; 1482 static int _name_offset; 1483 static int _nameAndId_offset; 1484 static int _unnamedModule_offset; 1485 1486 static void compute_offsets(); 1487 1488 public: 1489 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1490 1491 static ClassLoaderData* loader_data_acquire(oop loader); 1492 static ClassLoaderData* loader_data(oop loader); 1493 static void release_set_loader_data(oop loader, ClassLoaderData* new_data); 1494 1495 static oop parent(oop loader); 1496 static oop parent_no_keepalive(oop loader); 1497 static oop name(oop loader); 1498 static oop nameAndId(oop loader); 1499 static bool isAncestor(oop loader, oop cl); 1500 1501 // Support for parallelCapable field 1502 static bool parallelCapable(oop the_class_mirror); 1503 1504 static bool is_trusted_loader(oop loader); 1505 1506 // Return true if this is one of the class loaders associated with 1507 // the generated bytecodes for reflection. 1508 static bool is_reflection_class_loader(oop loader); 1509 1510 // Fix for 4474172 1511 static oop non_reflection_class_loader(oop loader); 1512 1513 // Testers 1514 static bool is_subclass(Klass* klass) { 1515 return klass->is_subclass_of(vmClasses::ClassLoader_klass()); 1516 } 1517 static bool is_instance(oop obj); 1518 1519 static oop unnamedModule(oop loader); 1520 1521 // Debugging 1522 friend class JavaClasses; 1523 }; 1524 1525 1526 // Interface to java.lang.System objects 1527 1528 class java_lang_System : AllStatic { 1529 private: 1530 static int _static_in_offset; 1531 static int _static_out_offset; 1532 static int _static_err_offset; 1533 static int _static_security_offset; 1534 static int _static_allow_security_offset; 1535 static int _static_never_offset; 1536 1537 public: 1538 static int in_offset() { CHECK_INIT(_static_in_offset); } 1539 static int out_offset() { CHECK_INIT(_static_out_offset); } 1540 static int err_offset() { CHECK_INIT(_static_err_offset); } 1541 static bool allow_security_manager(); 1542 static bool has_security_manager(); 1543 1544 static void compute_offsets(); 1545 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1546 1547 // Debugging 1548 friend class JavaClasses; 1549 }; 1550 1551 1552 // Interface to java.lang.StackTraceElement objects 1553 1554 class java_lang_StackTraceElement: AllStatic { 1555 private: 1556 static int _declaringClassObject_offset; 1557 static int _classLoaderName_offset; 1558 static int _moduleName_offset; 1559 static int _moduleVersion_offset; 1560 static int _declaringClass_offset; 1561 static int _methodName_offset; 1562 static int _fileName_offset; 1563 static int _lineNumber_offset; 1564 1565 // Setters 1566 static void set_classLoaderName(oop element, oop value); 1567 static void set_moduleName(oop element, oop value); 1568 static void set_moduleVersion(oop element, oop value); 1569 static void set_declaringClass(oop element, oop value); 1570 static void set_methodName(oop element, oop value); 1571 static void set_fileName(oop element, oop value); 1572 static void set_lineNumber(oop element, int value); 1573 static void set_declaringClassObject(oop element, oop value); 1574 1575 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version, 1576 const methodHandle& method, int bci, 1577 Symbol*& source, oop& source_file, int& line_number, TRAPS); 1578 1579 public: 1580 // Create an instance of StackTraceElement 1581 static oop create(const methodHandle& method, int bci, TRAPS); 1582 1583 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method, 1584 int version, int bci, Symbol* name, TRAPS); 1585 1586 static void compute_offsets(); 1587 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1588 1589 #if INCLUDE_JVMCI 1590 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS); 1591 #endif 1592 1593 // Debugging 1594 friend class JavaClasses; 1595 }; 1596 1597 1598 class Backtrace: AllStatic { 1599 public: 1600 // Helper backtrace functions to store bci|version together. 1601 static int merge_bci_and_version(int bci, int version); 1602 static int merge_mid_and_cpref(int mid, int cpref); 1603 static int bci_at(unsigned int merged); 1604 static int version_at(unsigned int merged); 1605 static int mid_at(unsigned int merged); 1606 static int cpref_at(unsigned int merged); 1607 static int get_line_number(Method* method, int bci); 1608 static Symbol* get_source_file_name(InstanceKlass* holder, int version); 1609 1610 // Debugging 1611 friend class JavaClasses; 1612 }; 1613 1614 // Interface to java.lang.StackFrameInfo objects 1615 1616 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \ 1617 macro(java_lang_StackFrameInfo, version, short_signature, false) 1618 1619 class java_lang_StackFrameInfo: AllStatic { 1620 private: 1621 static int _memberName_offset; 1622 static int _bci_offset; 1623 static int _version_offset; 1624 static int _contScope_offset; 1625 1626 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS); 1627 1628 public: 1629 // Setters 1630 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS); 1631 static void set_bci(oop info, int value); 1632 1633 static void set_version(oop info, short value); 1634 static void set_contScope(oop info, oop value); 1635 1636 static void compute_offsets(); 1637 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1638 1639 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS); 1640 1641 // Debugging 1642 friend class JavaClasses; 1643 }; 1644 1645 class java_lang_LiveStackFrameInfo: AllStatic { 1646 private: 1647 static int _monitors_offset; 1648 static int _locals_offset; 1649 static int _operands_offset; 1650 static int _mode_offset; 1651 1652 public: 1653 static void set_monitors(oop info, oop value); 1654 static void set_locals(oop info, oop value); 1655 static void set_operands(oop info, oop value); 1656 static void set_mode(oop info, int value); 1657 1658 static void compute_offsets(); 1659 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1660 1661 // Debugging 1662 friend class JavaClasses; 1663 }; 1664 1665 // Interface to java.lang.reflect.RecordComponent objects 1666 1667 class java_lang_reflect_RecordComponent: AllStatic { 1668 private: 1669 static int _clazz_offset; 1670 static int _name_offset; 1671 static int _type_offset; 1672 static int _accessor_offset; 1673 static int _signature_offset; 1674 static int _annotations_offset; 1675 static int _typeAnnotations_offset; 1676 1677 // Setters 1678 static void set_clazz(oop element, oop value); 1679 static void set_name(oop element, oop value); 1680 static void set_type(oop element, oop value); 1681 static void set_accessor(oop element, oop value); 1682 static void set_signature(oop element, oop value); 1683 static void set_annotations(oop element, oop value); 1684 static void set_typeAnnotations(oop element, oop value); 1685 1686 public: 1687 // Create an instance of RecordComponent 1688 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS); 1689 1690 static void compute_offsets(); 1691 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1692 1693 // Debugging 1694 friend class JavaClasses; 1695 }; 1696 1697 1698 // Interface to java.lang.AssertionStatusDirectives objects 1699 1700 class java_lang_AssertionStatusDirectives: AllStatic { 1701 private: 1702 static int _classes_offset; 1703 static int _classEnabled_offset; 1704 static int _packages_offset; 1705 static int _packageEnabled_offset; 1706 static int _deflt_offset; 1707 1708 public: 1709 // Setters 1710 static void set_classes(oop obj, oop val); 1711 static void set_classEnabled(oop obj, oop val); 1712 static void set_packages(oop obj, oop val); 1713 static void set_packageEnabled(oop obj, oop val); 1714 static void set_deflt(oop obj, bool val); 1715 1716 static void compute_offsets(); 1717 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1718 1719 // Debugging 1720 friend class JavaClasses; 1721 }; 1722 1723 1724 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { 1725 private: 1726 static int _owner_offset; 1727 public: 1728 static void compute_offsets(); 1729 static oop get_owner_threadObj(oop obj); 1730 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1731 }; 1732 1733 // Interface to jdk.internal.misc.UnsafeConsants 1734 1735 class jdk_internal_misc_UnsafeConstants : AllStatic { 1736 public: 1737 static void set_unsafe_constants(); 1738 static void compute_offsets() { } 1739 static void serialize_offsets(SerializeClosure* f) { } 1740 }; 1741 1742 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects 1743 1744 class vector_VectorPayload : AllStatic { 1745 private: 1746 static int _payload_offset; 1747 public: 1748 static void set_payload(oop o, oop val); 1749 1750 static void compute_offsets(); 1751 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1752 1753 // Testers 1754 static bool is_subclass(Klass* klass) { 1755 return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass()); 1756 } 1757 static bool is_instance(oop obj); 1758 }; 1759 1760 class java_lang_Integer : AllStatic { 1761 public: 1762 static jint value(oop obj); 1763 }; 1764 1765 class java_lang_Long : AllStatic { 1766 public: 1767 static jlong value(oop obj); 1768 }; 1769 1770 class java_lang_Character : AllStatic { 1771 public: 1772 static jchar value(oop obj); 1773 }; 1774 1775 class java_lang_Short : AllStatic { 1776 public: 1777 static jshort value(oop obj); 1778 }; 1779 1780 class java_lang_Byte : AllStatic { 1781 public: 1782 static jbyte value(oop obj); 1783 }; 1784 1785 class java_lang_Boolean : AllStatic { 1786 private: 1787 static int _static_TRUE_offset; 1788 static int _static_FALSE_offset; 1789 public: 1790 static Symbol* symbol(); 1791 static void compute_offsets(InstanceKlass* k); 1792 static oop get_TRUE(InstanceKlass *k); 1793 static oop get_FALSE(InstanceKlass *k); 1794 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1795 static jboolean value(oop obj); 1796 }; 1797 1798 class java_lang_Integer_IntegerCache : AllStatic { 1799 private: 1800 static int _static_cache_offset; 1801 public: 1802 static Symbol* symbol(); 1803 static void compute_offsets(InstanceKlass* k); 1804 static objArrayOop cache(InstanceKlass *k); 1805 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1806 }; 1807 1808 class java_lang_Long_LongCache : AllStatic { 1809 private: 1810 static int _static_cache_offset; 1811 public: 1812 static Symbol* symbol(); 1813 static void compute_offsets(InstanceKlass* k); 1814 static objArrayOop cache(InstanceKlass *k); 1815 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1816 }; 1817 1818 class java_lang_Character_CharacterCache : AllStatic { 1819 private: 1820 static int _static_cache_offset; 1821 public: 1822 static Symbol* symbol(); 1823 static void compute_offsets(InstanceKlass* k); 1824 static objArrayOop cache(InstanceKlass *k); 1825 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1826 }; 1827 1828 class java_lang_Short_ShortCache : AllStatic { 1829 private: 1830 static int _static_cache_offset; 1831 public: 1832 static Symbol* symbol(); 1833 static void compute_offsets(InstanceKlass* k); 1834 static objArrayOop cache(InstanceKlass *k); 1835 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1836 }; 1837 1838 class java_lang_Byte_ByteCache : AllStatic { 1839 private: 1840 static int _static_cache_offset; 1841 public: 1842 static Symbol* symbol(); 1843 static void compute_offsets(InstanceKlass* k); 1844 static objArrayOop cache(InstanceKlass *k); 1845 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1846 }; 1847 1848 // Interface to java.lang.InternalError objects 1849 1850 #define INTERNALERROR_INJECTED_FIELDS(macro) \ 1851 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false) 1852 1853 class java_lang_InternalError : AllStatic { 1854 private: 1855 static int _during_unsafe_access_offset; 1856 public: 1857 static jboolean during_unsafe_access(oop internal_error); 1858 static void set_during_unsafe_access(oop internal_error); 1859 static void compute_offsets(); 1860 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1861 }; 1862 1863 // Use to declare fields that need to be injected into Java classes 1864 // for the JVM to use. The name_index and signature_index are 1865 // declared in vmSymbols. The may_be_java flag is used to declare 1866 // fields that might already exist in Java but should be injected if 1867 // they don't. Otherwise the field is unconditionally injected and 1868 // the JVM uses the injected one. This is to ensure that name 1869 // collisions don't occur. In general may_be_java should be false 1870 // unless there's a good reason. 1871 1872 class InjectedField { 1873 public: 1874 const vmClassID klass_id; 1875 const vmSymbolID name_index; 1876 const vmSymbolID signature_index; 1877 const bool may_be_java; 1878 1879 1880 Klass* klass() const { return vmClasses::klass_at(klass_id); } 1881 Symbol* name() const { return lookup_symbol(name_index); } 1882 Symbol* signature() const { return lookup_symbol(signature_index); } 1883 1884 int compute_offset(); 1885 1886 // Find the Symbol for this index 1887 static Symbol* lookup_symbol(vmSymbolID symbol_index) { 1888 return Symbol::vm_symbol_at(symbol_index); 1889 } 1890 }; 1891 1892 1893 // Interface to hard-coded offset checking 1894 1895 enum class InjectedFieldID : int; 1896 1897 class JavaClasses : AllStatic { 1898 private: 1899 1900 static InjectedField _injected_fields[]; 1901 1902 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; 1903 public: 1904 1905 static int compute_injected_offset(InjectedFieldID id); 1906 1907 static void compute_offsets(); 1908 static void check_offsets() PRODUCT_RETURN; 1909 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN; 1910 static InjectedField* get_injected(Symbol* class_name, int* field_count); 1911 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false); 1912 1913 static void compute_offset(int &dest_offset, 1914 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol, 1915 bool is_static = false); 1916 static void compute_offset(int& dest_offset, InstanceKlass* ik, 1917 const char* name_string, Symbol* signature_symbol, 1918 bool is_static = false); 1919 }; 1920 1921 #undef CHECK_INIT 1922 1923 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP