1 /* 2 * Copyright (c) 1997, 2024, 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 "oops/symbol.hpp" 32 #include "runtime/handles.hpp" 33 #include "runtime/os.hpp" 34 #include "utilities/macros.hpp" 35 #include "utilities/vmEnums.hpp" 36 37 class JvmtiThreadState; 38 class RecordComponent; 39 class SerializeClosure; 40 41 #define CHECK_INIT(offset) assert(offset != 0, "should be initialized"); return offset; 42 43 // Interface to java.lang.Object objects 44 45 class java_lang_Object : AllStatic { 46 public: 47 static void register_natives(TRAPS); 48 }; 49 50 // Interface to java.lang.String objects 51 52 // The flags field is a collection of bits representing boolean values used 53 // internally by the VM. 54 #define STRING_INJECTED_FIELDS(macro) \ 55 macro(java_lang_String, flags, byte_signature, false) 56 57 class java_lang_String : AllStatic { 58 private: 59 static int _value_offset; 60 static int _hash_offset; 61 static int _hashIsZero_offset; 62 static int _coder_offset; 63 static int _flags_offset; 64 65 static bool _initialized; 66 67 static Handle basic_create(int length, bool byte_arr, TRAPS); 68 69 static inline void set_coder(oop string, jbyte coder); 70 71 // Bitmasks for values in the injected flags field. 72 static const uint8_t _deduplication_forbidden_mask = 1 << 0; 73 static const uint8_t _deduplication_requested_mask = 1 << 1; 74 75 static int flags_offset() { CHECK_INIT(_flags_offset); } 76 // Return the address of the injected flags field. 77 static inline uint8_t* flags_addr(oop java_string); 78 // Test whether the designated bit of the injected flags field is set. 79 static inline bool is_flag_set(oop java_string, uint8_t flag_mask); 80 // Atomically test and set the designated bit of the injected flags field, 81 // returning true if the bit was already set. 82 static bool test_and_set_flag(oop java_string, uint8_t flag_mask); 83 84 static inline unsigned int hash_code_impl(oop java_string, bool update); 85 86 public: 87 88 // Coders 89 enum Coder { 90 CODER_LATIN1 = 0, 91 CODER_UTF16 = 1 92 }; 93 94 static void compute_offsets(); 95 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 96 97 // Instance creation 98 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS); 99 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS); 100 static Handle create_from_str(const char* utf8_str, TRAPS); 101 static oop create_oop_from_str(const char* utf8_str, TRAPS); 102 static Handle create_from_symbol(Symbol* symbol, TRAPS); 103 static Handle create_from_platform_dependent_str(const char* str, TRAPS); 104 105 static void set_compact_strings(bool value); 106 107 static int value_offset() { CHECK_INIT(_value_offset); } 108 static int coder_offset() { CHECK_INIT(_coder_offset); } 109 110 static inline void set_value(oop string, typeArrayOop buffer); 111 112 // Set the deduplication_forbidden flag true. This flag is sticky; once 113 // set it never gets cleared. This is set when a String is interned in 114 // the StringTable, to prevent string deduplication from changing the 115 // String's value array. 116 static inline void set_deduplication_forbidden(oop java_string); 117 118 // Test and set the deduplication_requested flag. Returns the old value 119 // of the flag. This flag is sticky; once set it never gets cleared. 120 // Some GCs may use this flag when deciding whether to request 121 // deduplication of a String, to avoid multiple requests for the same 122 // object. 123 static inline bool test_and_set_deduplication_requested(oop java_string); 124 125 // Accessors 126 static inline typeArrayOop value(oop java_string); 127 static inline typeArrayOop value_no_keepalive(oop java_string); 128 static inline bool hash_is_set(oop string); 129 static inline bool is_latin1(oop java_string); 130 static inline bool deduplication_forbidden(oop java_string); 131 static inline bool deduplication_requested(oop java_string); 132 static inline int length(oop java_string); 133 static inline int length(oop java_string, typeArrayOop string_value); 134 static size_t utf8_length(oop java_string); 135 static size_t utf8_length(oop java_string, typeArrayOop string_value); 136 // Legacy variants that truncate the length if needed 137 static int utf8_length_as_int(oop java_string); 138 static int utf8_length_as_int(oop java_string, typeArrayOop string_value); 139 140 // String converters 141 static char* as_utf8_string(oop java_string); 142 // `length` is set to the length of the utf8 sequence. 143 static char* as_utf8_string(oop java_string, size_t& length); 144 static char* as_utf8_string_full(oop java_string, char* buf, size_t buflen, size_t& length); 145 static char* as_utf8_string(oop java_string, char* buf, size_t buflen); 146 static char* as_utf8_string(oop java_string, int start, int len); 147 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, size_t buflen); 148 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, size_t buflen); 149 static char* as_platform_dependent_str(Handle java_string, TRAPS); 150 static jchar* as_unicode_string(oop java_string, int& length, TRAPS); 151 static jchar* as_unicode_string_or_null(oop java_string, int& length); 152 // produce an ascii string with all other values quoted using \u#### 153 static char* as_quoted_ascii(oop java_string); 154 155 // Compute the hash value for a java.lang.String object which would 156 // contain the characters passed in. 157 // 158 // As the hash value used by the String object itself, in 159 // String.hashCode(). This value is normally calculated in Java code 160 // in the String.hashCode method(), but is precomputed for String 161 // objects in the shared archive file. 162 // hash P(31) from Kernighan & Ritchie 163 // 164 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode(). 165 static unsigned int hash_code(const jchar* s, int len) { 166 unsigned int h = 0; 167 while (len-- > 0) { 168 h = 31*h + (unsigned int) *s; 169 s++; 170 } 171 return h; 172 } 173 174 static unsigned int hash_code(const jbyte* s, int len) { 175 unsigned int h = 0; 176 while (len-- > 0) { 177 h = 31*h + (((unsigned int) *s) & 0xFF); 178 s++; 179 } 180 return h; 181 } 182 183 static unsigned int hash_code(oop java_string); 184 static unsigned int hash_code_noupdate(oop java_string); 185 186 static bool equals(oop java_string, const jchar* chars, int len); 187 static bool equals(oop str1, oop str2); 188 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2); 189 190 // Conversion between '.' and '/' formats, and allocate a String from the result. 191 static Handle externalize_classname(Symbol* java_name, TRAPS); 192 193 // Conversion 194 static Symbol* as_symbol(oop java_string); 195 static Symbol* as_symbol_or_null(oop java_string); 196 197 // Tester 198 static inline bool is_instance(oop obj); 199 200 // Debugging 201 static void print(oop java_string, outputStream* st, int max_length = MaxStringPrintSize); 202 friend class JavaClasses; 203 friend class StringTable; 204 }; 205 206 207 // Interface to java.lang.Class objects 208 209 #define CLASS_INJECTED_FIELDS(macro) \ 210 macro(java_lang_Class, klass, intptr_signature, false) \ 211 macro(java_lang_Class, array_klass, intptr_signature, false) \ 212 macro(java_lang_Class, oop_size, int_signature, false) \ 213 macro(java_lang_Class, static_oop_field_count, int_signature, false) \ 214 macro(java_lang_Class, protection_domain, object_signature, false) \ 215 macro(java_lang_Class, source_file, object_signature, false) \ 216 macro(java_lang_Class, init_lock, object_signature, false) 217 218 class java_lang_Class : AllStatic { 219 friend class VMStructs; 220 friend class JVMCIVMStructs; 221 222 private: 223 224 // The fake offsets are added by the class loader when java.lang.Class is loaded 225 226 static int _klass_offset; 227 static int _array_klass_offset; 228 229 static int _oop_size_offset; 230 static int _static_oop_field_count_offset; 231 232 static int _protection_domain_offset; 233 static int _init_lock_offset; 234 static int _signers_offset; 235 static int _class_loader_offset; 236 static int _module_offset; 237 static int _component_mirror_offset; 238 static int _name_offset; 239 static int _source_file_offset; 240 static int _classData_offset; 241 static int _classRedefinedCount_offset; 242 243 static bool _offsets_computed; 244 245 static GrowableArray<Klass*>* _fixup_mirror_list; 246 static GrowableArray<Klass*>* _fixup_module_field_list; 247 248 static void set_init_lock(oop java_class, oop init_lock); 249 static void set_protection_domain(oop java_class, oop protection_domain); 250 static void set_class_loader(oop java_class, oop class_loader); 251 static void set_component_mirror(oop java_class, oop comp_mirror); 252 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, 253 Handle classData, TRAPS); 254 static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module); 255 public: 256 static void allocate_fixup_lists(); 257 static void compute_offsets(); 258 259 // Instance creation 260 static void allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData, 261 Handle& mirror, Handle& comp_mirror, TRAPS); // returns mirror and comp_mirror 262 static void create_mirror(Klass* k, Handle class_loader, Handle module, 263 Handle protection_domain, Handle classData, TRAPS); 264 static void fixup_mirror(Klass* k, TRAPS); 265 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); 266 267 // Archiving 268 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 269 static void create_scratch_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN; 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 = nullptr); 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 // Support for classRedefinedCount field 296 static int classRedefinedCount(oop the_class_mirror); 297 static void set_classRedefinedCount(oop the_class_mirror, int value); 298 299 // Support for embedded per-class oops 300 static oop protection_domain(oop java_class); 301 static oop init_lock(oop java_class); 302 static void clear_init_lock(oop java_class) { 303 set_init_lock(java_class, nullptr); 304 } 305 static oop component_mirror(oop java_class); 306 static objArrayOop signers(oop java_class); 307 static oop class_data(oop java_class); 308 static void set_class_data(oop java_class, oop classData); 309 310 static int component_mirror_offset() { return _component_mirror_offset; } 311 312 static oop class_loader(oop java_class); 313 static void set_module(oop java_class, oop module); 314 static oop module(oop java_class); 315 316 static oop name(Handle java_class, TRAPS); 317 318 static oop source_file(oop java_class); 319 static void set_source_file(oop java_class, oop source_file); 320 321 static size_t oop_size(oop java_class); 322 static void set_oop_size(HeapWord* java_class, size_t size); 323 static int static_oop_field_count(oop java_class); 324 static void set_static_oop_field_count(oop java_class, int size); 325 326 static GrowableArray<Klass*>* fixup_mirror_list() { 327 return _fixup_mirror_list; 328 } 329 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) { 330 _fixup_mirror_list = v; 331 } 332 333 static GrowableArray<Klass*>* fixup_module_field_list() { 334 return _fixup_module_field_list; 335 } 336 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) { 337 _fixup_module_field_list = v; 338 } 339 340 // Debugging 341 friend class JavaClasses; 342 }; 343 344 // Interface to java.lang.Thread objects 345 346 #define THREAD_INJECTED_FIELDS(macro) \ 347 macro(java_lang_Thread, jvmti_thread_state, intptr_signature, false) \ 348 macro(java_lang_Thread, jvmti_VTMS_transition_disable_count, int_signature, false) \ 349 macro(java_lang_Thread, jvmti_is_in_VTMS_transition, bool_signature, false) \ 350 JFR_ONLY(macro(java_lang_Thread, jfr_epoch, short_signature, false)) 351 352 class java_lang_Thread : AllStatic { 353 friend class java_lang_VirtualThread; 354 friend class JVMCIVMStructs; 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 _jvmti_VTMS_transition_disable_count_offset; 365 static int _jvmti_is_in_VTMS_transition_offset; 366 static int _interrupted_offset; 367 static int _interruptLock_offset; 368 static int _tid_offset; 369 static int _continuation_offset; 370 static int _park_blocker_offset; 371 static int _scopedValueBindings_offset; 372 JFR_ONLY(static int _jfr_epoch_offset;) 373 374 static void compute_offsets(); 375 376 public: 377 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 378 379 // Returns the JavaThread associated with the thread obj 380 static JavaThread* thread(oop java_thread); 381 static JavaThread* thread_acquire(oop java_thread); 382 // Set JavaThread for instance 383 static void set_thread(oop java_thread, JavaThread* thread); 384 static void release_set_thread(oop java_thread, JavaThread* thread); 385 // FieldHolder 386 static oop holder(oop java_thread); 387 // interruptLock 388 static oop interrupt_lock(oop java_thread); 389 // Interrupted status 390 static bool interrupted(oop java_thread); 391 static void set_interrupted(oop java_thread, bool val); 392 // Name 393 static oop name(oop java_thread); 394 static void set_name(oop java_thread, oop name); 395 // Priority 396 static ThreadPriority priority(oop java_thread); 397 static void set_priority(oop java_thread, ThreadPriority priority); 398 // Thread group 399 static oop threadGroup(oop java_thread); 400 // Alive (NOTE: this is not really a field, but provides the correct 401 // definition without doing a Java call) 402 static bool is_alive(oop java_thread); 403 // Daemon 404 static bool is_daemon(oop java_thread); 405 static void set_daemon(oop java_thread); 406 // Context ClassLoader 407 static oop context_class_loader(oop java_thread); 408 // Control context 409 static oop inherited_access_control_context(oop java_thread); 410 // Stack size hint 411 static jlong stackSize(oop java_thread); 412 // Thread ID 413 static int64_t thread_id(oop java_thread); 414 static ByteSize thread_id_offset(); 415 // Continuation 416 static inline oop continuation(oop java_thread); 417 418 static JvmtiThreadState* jvmti_thread_state(oop java_thread); 419 static void set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state); 420 static int VTMS_transition_disable_count(oop java_thread); 421 static void inc_VTMS_transition_disable_count(oop java_thread); 422 static void dec_VTMS_transition_disable_count(oop java_thread); 423 static bool is_in_VTMS_transition(oop java_thread); 424 static void set_is_in_VTMS_transition(oop java_thread, bool val); 425 static int is_in_VTMS_transition_offset(); 426 427 // Clear all scoped value bindings on error 428 static void clear_scopedValueBindings(oop java_thread); 429 430 // Blocker object responsible for thread parking 431 static oop park_blocker(oop java_thread); 432 433 // Write thread status info to threadStatus field of java.lang.Thread. 434 static void set_thread_status(oop java_thread_oop, JavaThreadStatus status); 435 // Read thread status info from threadStatus field of java.lang.Thread. 436 static JavaThreadStatus get_thread_status(oop java_thread_oop); 437 438 static const char* thread_status_name(oop java_thread_oop); 439 440 // Fill in current stack trace, can cause GC 441 static oop async_get_stack_trace(oop java_thread, TRAPS); 442 443 JFR_ONLY(static u2 jfr_epoch(oop java_thread);) 444 JFR_ONLY(static void set_jfr_epoch(oop java_thread, u2 epoch);) 445 JFR_ONLY(static int jfr_epoch_offset() { CHECK_INIT(_jfr_epoch_offset); }) 446 447 // Debugging 448 friend class JavaClasses; 449 }; 450 451 // Interface to java.lang.Thread$FieldHolder objects 452 453 class java_lang_Thread_FieldHolder : AllStatic { 454 private: 455 static int _group_offset; 456 static int _priority_offset; 457 static int _stackSize_offset; 458 static int _daemon_offset; 459 static int _thread_status_offset; 460 461 static void compute_offsets(); 462 463 public: 464 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 465 466 static oop threadGroup(oop holder); 467 468 static ThreadPriority priority(oop holder); 469 static void set_priority(oop holder, ThreadPriority priority); 470 471 static jlong stackSize(oop holder); 472 473 static bool is_daemon(oop holder); 474 static void set_daemon(oop holder, bool val); 475 476 static void set_thread_status(oop holder, JavaThreadStatus status); 477 static JavaThreadStatus get_thread_status(oop holder); 478 479 friend class JavaClasses; 480 }; 481 482 // Interface to java.lang.Thread$Constants objects 483 484 class java_lang_Thread_Constants : AllStatic { 485 private: 486 static int _static_VTHREAD_GROUP_offset; 487 static int _static_NOT_SUPPORTED_CLASSLOADER_offset; 488 489 static void compute_offsets(); 490 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 491 492 public: 493 static oop get_VTHREAD_GROUP(); 494 495 friend class JavaClasses; 496 }; 497 498 // Interface to java.lang.ThreadGroup objects 499 500 class java_lang_ThreadGroup : AllStatic { 501 private: 502 static int _parent_offset; 503 static int _name_offset; 504 static int _maxPriority_offset; 505 static int _daemon_offset; 506 507 static void compute_offsets(); 508 public: 509 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 510 511 // parent ThreadGroup 512 static oop parent(oop java_thread_group); 513 // name 514 static const char* name(oop java_thread_group); 515 // maxPriority in group 516 static ThreadPriority maxPriority(oop java_thread_group); 517 // Daemon 518 static bool is_daemon(oop java_thread_group); 519 520 // Debugging 521 friend class JavaClasses; 522 }; 523 524 525 // Interface to java.lang.VirtualThread objects 526 527 class java_lang_VirtualThread : AllStatic { 528 private: 529 static int static_vthread_scope_offset; 530 static int _carrierThread_offset; 531 static int _continuation_offset; 532 static int _state_offset; 533 JFR_ONLY(static int _jfr_epoch_offset;) 534 public: 535 enum { 536 NEW = 0, 537 STARTED = 1, 538 RUNNING = 2, 539 PARKING = 3, 540 PARKED = 4, 541 PINNED = 5, 542 TIMED_PARKING = 6, 543 TIMED_PARKED = 7, 544 TIMED_PINNED = 8, 545 UNPARKED = 9, 546 YIELDING = 10, 547 YIELDED = 11, 548 TERMINATED = 99, 549 550 // additional state bits 551 SUSPENDED = 1 << 8, // suspended when unmounted 552 }; 553 554 static void compute_offsets(); 555 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 556 557 // Testers 558 static bool is_subclass(Klass* klass) { 559 return klass->is_subclass_of(vmClasses::VirtualThread_klass()); 560 } 561 static bool is_instance(oop obj); 562 563 static oop vthread_scope(); 564 static oop carrier_thread(oop vthread); 565 static oop continuation(oop vthread); 566 static int state(oop vthread); 567 static JavaThreadStatus map_state_to_thread_status(int state); 568 }; 569 570 571 // Interface to java.lang.Throwable objects 572 573 class java_lang_Throwable: AllStatic { 574 friend class BacktraceBuilder; 575 friend class BacktraceIterator; 576 577 private: 578 // Trace constants 579 enum { 580 trace_methods_offset = 0, 581 trace_bcis_offset = 1, 582 trace_mirrors_offset = 2, 583 trace_names_offset = 3, 584 trace_conts_offset = 4, 585 trace_next_offset = 5, 586 trace_hidden_offset = 6, 587 trace_size = 7, 588 trace_chunk_size = 32 589 }; 590 591 static int _backtrace_offset; 592 static int _detailMessage_offset; 593 static int _stackTrace_offset; 594 static int _depth_offset; 595 static int _cause_offset; 596 static int _static_unassigned_stacktrace_offset; 597 598 // StackTrace (programmatic access, new since 1.4) 599 static void clear_stacktrace(oop throwable); 600 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) 601 static void set_stacktrace(oop throwable, oop st_element_array); 602 static oop unassigned_stacktrace(); 603 604 public: 605 // Backtrace 606 static oop backtrace(oop throwable); 607 static void set_backtrace(oop throwable, oop value); 608 static int depth(oop throwable); 609 static void set_depth(oop throwable, int value); 610 // Message 611 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); } 612 static oop message(oop throwable); 613 static const char* message_as_utf8(oop throwable); 614 static void set_message(oop throwable, oop value); 615 616 static oop cause(oop throwable); 617 618 static void print_stack_element(outputStream *st, Method* method, int bci); 619 620 static void compute_offsets(); 621 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 622 623 // Allocate space for backtrace (created but stack trace not filled in) 624 static void allocate_backtrace(Handle throwable, TRAPS); 625 // Fill in current stack trace for throwable with preallocated backtrace (no GC) 626 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); 627 // Fill in current stack trace, can cause GC 628 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS); 629 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle()); 630 631 // Programmatic access to stack trace 632 static void get_stack_trace_elements(int depth, Handle backtrace, objArrayHandle stack_trace, TRAPS); 633 634 // For recreating class initialization error exceptions. 635 static Handle create_initialization_error(JavaThread* current, Handle throwable); 636 637 // Printing 638 static void print(oop throwable, outputStream* st); 639 static void print_stack_trace(Handle throwable, outputStream* st); 640 static void java_printStackTrace(Handle throwable, TRAPS); 641 // Debugging 642 friend class JavaClasses; 643 // Gets the method and bci of the top frame (TOS). Returns false if this failed. 644 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci); 645 }; 646 647 648 // Interface to java.lang.reflect.AccessibleObject objects 649 650 class java_lang_reflect_AccessibleObject: AllStatic { 651 private: 652 // Note that to reduce dependencies on the JDK we compute these 653 // offsets at run-time. 654 static int _override_offset; 655 656 static void compute_offsets(); 657 658 public: 659 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 660 661 // Accessors 662 static jboolean override(oop reflect); 663 static void set_override(oop reflect, jboolean value); 664 665 // Debugging 666 friend class JavaClasses; 667 }; 668 669 670 // Interface to java.lang.reflect.Method objects 671 672 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { 673 private: 674 // Note that to reduce dependencies on the JDK we compute these 675 // offsets at run-time. 676 static int _clazz_offset; 677 static int _name_offset; 678 static int _returnType_offset; 679 static int _parameterTypes_offset; 680 static int _exceptionTypes_offset; 681 static int _slot_offset; 682 static int _modifiers_offset; 683 static int _signature_offset; 684 static int _annotations_offset; 685 static int _parameter_annotations_offset; 686 static int _annotation_default_offset; 687 688 static void compute_offsets(); 689 public: 690 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 691 692 // Allocation 693 static Handle create(TRAPS); 694 695 // Accessors 696 static oop clazz(oop reflect); 697 static void set_clazz(oop reflect, oop value); 698 699 static void set_name(oop method, oop value); 700 701 static oop return_type(oop method); 702 static void set_return_type(oop method, oop value); 703 704 static oop parameter_types(oop method); 705 static void set_parameter_types(oop method, oop value); 706 707 static int slot(oop reflect); 708 static void set_slot(oop reflect, int value); 709 710 static void set_exception_types(oop method, oop value); 711 static void set_modifiers(oop method, int value); 712 static void set_signature(oop method, oop value); 713 static void set_annotations(oop method, oop value); 714 static void set_parameter_annotations(oop method, oop value); 715 static void set_annotation_default(oop method, oop value); 716 717 // Debugging 718 friend class JavaClasses; 719 }; 720 721 722 // Interface to java.lang.reflect.Constructor objects 723 724 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { 725 private: 726 // Note that to reduce dependencies on the JDK we compute these 727 // offsets at run-time. 728 static int _clazz_offset; 729 static int _parameterTypes_offset; 730 static int _exceptionTypes_offset; 731 static int _slot_offset; 732 static int _modifiers_offset; 733 static int _signature_offset; 734 static int _annotations_offset; 735 static int _parameter_annotations_offset; 736 737 static void compute_offsets(); 738 public: 739 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 740 741 // Allocation 742 static Handle create(TRAPS); 743 744 // Accessors 745 static oop clazz(oop reflect); 746 static void set_clazz(oop reflect, oop value); 747 748 static oop parameter_types(oop constructor); 749 static void set_parameter_types(oop constructor, oop value); 750 751 static int slot(oop reflect); 752 static void set_slot(oop reflect, int value); 753 754 static void set_exception_types(oop constructor, oop value); 755 static void set_modifiers(oop constructor, int value); 756 static void set_signature(oop constructor, oop value); 757 static void set_annotations(oop constructor, oop value); 758 static void set_parameter_annotations(oop method, oop value); 759 760 // Debugging 761 friend class JavaClasses; 762 }; 763 764 765 // Interface to java.lang.reflect.Field objects 766 767 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { 768 private: 769 // Note that to reduce dependencies on the JDK we compute these 770 // offsets at run-time. 771 static int _clazz_offset; 772 static int _name_offset; 773 static int _type_offset; 774 static int _slot_offset; 775 static int _modifiers_offset; 776 static int _trusted_final_offset; 777 static int _signature_offset; 778 static int _annotations_offset; 779 780 static void compute_offsets(); 781 782 public: 783 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 784 785 // Allocation 786 static Handle create(TRAPS); 787 788 // Accessors 789 static oop clazz(oop reflect); 790 static void set_clazz(oop reflect, oop value); 791 792 static oop name(oop field); 793 static void set_name(oop field, oop value); 794 795 static oop type(oop field); 796 static void set_type(oop field, oop value); 797 798 static int slot(oop reflect); 799 static void set_slot(oop reflect, int value); 800 801 static int modifiers(oop field); 802 static void set_modifiers(oop field, int value); 803 804 static void set_trusted_final(oop field); 805 806 static void set_signature(oop constructor, oop value); 807 static void set_annotations(oop constructor, oop value); 808 809 // Debugging 810 friend class JavaClasses; 811 }; 812 813 class java_lang_reflect_Parameter { 814 private: 815 // Note that to reduce dependencies on the JDK we compute these 816 // offsets at run-time. 817 static int _name_offset; 818 static int _modifiers_offset; 819 static int _index_offset; 820 static int _executable_offset; 821 822 static void compute_offsets(); 823 824 public: 825 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 826 827 // Allocation 828 static Handle create(TRAPS); 829 830 // Accessors 831 static oop name(oop field); 832 static void set_name(oop field, oop value); 833 834 static int index(oop reflect); 835 static void set_index(oop reflect, int value); 836 837 static int modifiers(oop reflect); 838 static void set_modifiers(oop reflect, int value); 839 840 static oop executable(oop constructor); 841 static void set_executable(oop constructor, oop value); 842 843 friend class JavaClasses; 844 }; 845 846 #define MODULE_INJECTED_FIELDS(macro) \ 847 macro(java_lang_Module, module_entry, intptr_signature, false) 848 849 class java_lang_Module { 850 private: 851 static int _loader_offset; 852 static int _name_offset; 853 static int _module_entry_offset; 854 855 static void compute_offsets(); 856 857 public: 858 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 859 860 // Allocation 861 static Handle create(Handle loader, Handle module_name, TRAPS); 862 863 // Testers 864 static bool is_instance(oop obj); 865 866 // Accessors 867 static oop loader(oop module); 868 static void set_loader(oop module, oop value); 869 870 // CDS 871 static int module_entry_offset() { return _module_entry_offset; } 872 873 static oop name(oop module); 874 static void set_name(oop module, oop value); 875 876 static ModuleEntry* module_entry(oop module); 877 static ModuleEntry* module_entry_raw(oop module); 878 static void set_module_entry(oop module, ModuleEntry* module_entry); 879 880 friend class JavaClasses; 881 }; 882 883 // Interface to jdk.internal.reflect.ConstantPool objects 884 class reflect_ConstantPool { 885 private: 886 // Note that to reduce dependencies on the JDK we compute these 887 // offsets at run-time. 888 static int _oop_offset; 889 890 static void compute_offsets(); 891 892 public: 893 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 894 895 // Allocation 896 static Handle create(TRAPS); 897 898 // Accessors 899 static void set_cp(oop reflect, ConstantPool* value); 900 static int oop_offset() { CHECK_INIT(_oop_offset); } 901 902 static ConstantPool* get_cp(oop reflect); 903 904 // Debugging 905 friend class JavaClasses; 906 }; 907 908 909 // Interface to java.lang primitive type boxing objects: 910 // - java.lang.Boolean 911 // - java.lang.Character 912 // - java.lang.Float 913 // - java.lang.Double 914 // - java.lang.Byte 915 // - java.lang.Short 916 // - java.lang.Integer 917 // - java.lang.Long 918 919 // This could be separated out into 8 individual classes. 920 921 class java_lang_boxing_object: AllStatic { 922 private: 923 static int _value_offset; 924 static int _long_value_offset; 925 926 static void compute_offsets(); 927 static oop initialize_and_allocate(BasicType type, TRAPS); 928 public: 929 // Allocation. Returns a boxed value, or null for invalid type. 930 static oop create(BasicType type, jvalue* value, TRAPS); 931 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. 932 static BasicType get_value(oop box, jvalue* value); 933 static BasicType set_value(oop box, jvalue* value); 934 static BasicType basic_type(oop box); 935 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } 936 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } 937 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } 938 static void print(BasicType type, jvalue* value, outputStream* st); 939 940 static int value_offset(BasicType type) { 941 return is_double_word_type(type) ? _long_value_offset : _value_offset; 942 } 943 944 static void serialize_offsets(SerializeClosure* f); 945 946 // Debugging 947 friend class JavaClasses; 948 }; 949 950 951 952 // Interface to java.lang.ref.Reference objects 953 954 class java_lang_ref_Reference: AllStatic { 955 static int _referent_offset; 956 static int _queue_offset; 957 static int _next_offset; 958 static int _discovered_offset; 959 960 static bool _offsets_initialized; 961 962 public: 963 // Accessors 964 static inline oop weak_referent_no_keepalive(oop ref); 965 static inline oop weak_referent(oop ref); 966 static inline oop phantom_referent_no_keepalive(oop ref); 967 static inline oop unknown_referent_no_keepalive(oop ref); 968 static inline void clear_referent(oop ref); 969 static inline void clear_referent_raw(oop ref); 970 static inline HeapWord* referent_addr_raw(oop ref); 971 static inline oop next(oop ref); 972 static inline void set_next(oop ref, oop value); 973 static inline void set_next_raw(oop ref, oop value); 974 static inline HeapWord* next_addr_raw(oop ref); 975 static inline oop discovered(oop ref); 976 static inline void set_discovered(oop ref, oop value); 977 static inline void set_discovered_raw(oop ref, oop value); 978 static inline HeapWord* discovered_addr_raw(oop ref); 979 static bool is_referent_field(oop obj, ptrdiff_t offset); 980 static inline bool is_final(oop ref); 981 static inline bool is_phantom(oop ref); 982 static inline bool is_weak(oop ref); 983 static inline bool is_soft(oop ref); 984 985 static int referent_offset() { CHECK_INIT(_referent_offset); } 986 static int queue_offset() { CHECK_INIT(_queue_offset); } 987 static int next_offset() { CHECK_INIT(_next_offset); } 988 static int discovered_offset() { CHECK_INIT(_discovered_offset); } 989 990 static void compute_offsets(); 991 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 992 }; 993 994 995 // Interface to java.lang.ref.SoftReference objects 996 997 class java_lang_ref_SoftReference: public java_lang_ref_Reference { 998 static int _timestamp_offset; 999 static int _static_clock_offset; 1000 1001 public: 1002 // Accessors 1003 static jlong timestamp(oop ref); 1004 1005 // Accessors for statics 1006 static jlong clock(); 1007 static void set_clock(jlong value); 1008 1009 static void compute_offsets(); 1010 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1011 }; 1012 1013 // Interface to java.lang.invoke.MethodHandle objects 1014 1015 class java_lang_invoke_MethodHandle: AllStatic { 1016 friend class JavaClasses; 1017 1018 private: 1019 static int _type_offset; // the MethodType of this MH 1020 static int _form_offset; // the LambdaForm of this MH 1021 1022 static void compute_offsets(); 1023 1024 public: 1025 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1026 1027 // Accessors 1028 static oop type(oop mh); 1029 static void set_type(oop mh, oop mtype); 1030 1031 static oop form(oop mh); 1032 static void set_form(oop mh, oop lform); 1033 1034 // Testers 1035 static bool is_subclass(Klass* klass) { 1036 return klass->is_subclass_of(vmClasses::MethodHandle_klass()); 1037 } 1038 static bool is_instance(oop obj); 1039 1040 // Accessors for code generation: 1041 static int type_offset() { CHECK_INIT(_type_offset); } 1042 static int form_offset() { CHECK_INIT(_form_offset); } 1043 }; 1044 1045 // Interface to java.lang.invoke.DirectMethodHandle objects 1046 1047 class java_lang_invoke_DirectMethodHandle: AllStatic { 1048 friend class JavaClasses; 1049 1050 private: 1051 static int _member_offset; // the MemberName of this DMH 1052 1053 static void compute_offsets(); 1054 1055 public: 1056 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1057 1058 // Accessors 1059 static oop member(oop mh); 1060 1061 // Testers 1062 static bool is_subclass(Klass* klass) { 1063 return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass()); 1064 } 1065 static bool is_instance(oop obj); 1066 1067 // Accessors for code generation: 1068 static int member_offset() { CHECK_INIT(_member_offset); } 1069 }; 1070 1071 // Interface to java.lang.invoke.LambdaForm objects 1072 // (These are a private interface for managing adapter code generation.) 1073 1074 class java_lang_invoke_LambdaForm: AllStatic { 1075 friend class JavaClasses; 1076 1077 private: 1078 static int _vmentry_offset; // type is MemberName 1079 1080 static void compute_offsets(); 1081 1082 public: 1083 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1084 1085 // Accessors 1086 static oop vmentry(oop lform); 1087 1088 // Testers 1089 static bool is_subclass(Klass* klass) { 1090 return vmClasses::LambdaForm_klass() != nullptr && 1091 klass->is_subclass_of(vmClasses::LambdaForm_klass()); 1092 } 1093 static bool is_instance(oop obj); 1094 1095 // Accessors for code generation: 1096 static int vmentry_offset() { CHECK_INIT(_vmentry_offset); } 1097 }; 1098 1099 // Interface to java.lang.invoke.NativeEntryPoint objects 1100 // (These are a private interface for managing adapter code generation.) 1101 1102 class jdk_internal_foreign_abi_NativeEntryPoint: AllStatic { 1103 friend class JavaClasses; 1104 1105 private: 1106 static int _method_type_offset; 1107 static int _downcall_stub_address_offset; 1108 1109 static void compute_offsets(); 1110 1111 public: 1112 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1113 1114 // Accessors 1115 static oop method_type(oop entry); 1116 static jlong downcall_stub_address(oop entry); 1117 1118 // Testers 1119 static bool is_subclass(Klass* klass) { 1120 return vmClasses::NativeEntryPoint_klass() != nullptr && 1121 klass->is_subclass_of(vmClasses::NativeEntryPoint_klass()); 1122 } 1123 static bool is_instance(oop obj); 1124 1125 // Accessors for code generation: 1126 static int method_type_offset_in_bytes() { return _method_type_offset; } 1127 static int downcall_stub_address_offset_in_bytes() { return _downcall_stub_address_offset; } 1128 }; 1129 1130 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic { 1131 friend class JavaClasses; 1132 1133 private: 1134 static int _inputStorage_offset; 1135 static int _outputStorage_offset; 1136 static int _volatileStorage_offset; 1137 static int _stackAlignment_offset; 1138 static int _shadowSpace_offset; 1139 static int _scratch1_offset; 1140 static int _scratch2_offset; 1141 1142 static void compute_offsets(); 1143 1144 public: 1145 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1146 1147 // Accessors 1148 static objArrayOop inputStorage(oop entry); 1149 static objArrayOop outputStorage(oop entry); 1150 static objArrayOop volatileStorage(oop entry); 1151 static jint stackAlignment(oop entry); 1152 static jint shadowSpace(oop entry); 1153 static oop scratch1(oop entry); 1154 static oop scratch2(oop entry); 1155 1156 // Testers 1157 static bool is_subclass(Klass* klass) { 1158 return vmClasses::ABIDescriptor_klass() != nullptr && 1159 klass->is_subclass_of(vmClasses::ABIDescriptor_klass()); 1160 } 1161 static bool is_instance(oop obj); 1162 }; 1163 1164 class jdk_internal_foreign_abi_VMStorage: AllStatic { 1165 friend class JavaClasses; 1166 1167 private: 1168 static int _type_offset; 1169 static int _indexOrOffset_offset; 1170 static int _segmentMaskOrSize_offset; 1171 static int _debugName_offset; 1172 1173 static void compute_offsets(); 1174 1175 public: 1176 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1177 1178 // Accessors 1179 static jbyte type(oop entry); 1180 static jint index_or_offset(oop entry); 1181 static jshort segment_mask_or_size(oop entry); 1182 static oop debugName(oop entry); 1183 1184 // Testers 1185 static bool is_subclass(Klass* klass) { 1186 return vmClasses::VMStorage_klass() != nullptr && 1187 klass->is_subclass_of(vmClasses::VMStorage_klass()); 1188 } 1189 static bool is_instance(oop obj); 1190 }; 1191 1192 class jdk_internal_foreign_abi_CallConv: AllStatic { 1193 friend class JavaClasses; 1194 1195 private: 1196 static int _argRegs_offset; 1197 static int _retRegs_offset; 1198 1199 static void compute_offsets(); 1200 1201 public: 1202 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1203 1204 // Accessors 1205 static objArrayOop argRegs(oop entry); 1206 static objArrayOop retRegs(oop entry); 1207 1208 // Testers 1209 static bool is_subclass(Klass* klass) { 1210 return vmClasses::CallConv_klass() != nullptr && 1211 klass->is_subclass_of(vmClasses::CallConv_klass()); 1212 } 1213 static bool is_instance(oop obj); 1214 }; 1215 1216 // Interface to java.lang.invoke.MemberName objects 1217 // (These are a private interface for Java code to query the class hierarchy.) 1218 1219 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \ 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_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_HIDDEN_MEMBER = 0x00400000, // @Hidden annotation detected 1309 MN_REFERENCE_KIND_SHIFT = 24, // refKind 1310 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, 1311 MN_NESTMATE_CLASS = 0x00000001, 1312 MN_HIDDEN_CLASS = 0x00000002, 1313 MN_STRONG_LOADER_LINK = 0x00000004, 1314 MN_ACCESS_VM_ANNOTATIONS = 0x00000008, 1315 // Lookup modes 1316 MN_MODULE_MODE = 0x00000010, 1317 MN_UNCONDITIONAL_MODE = 0x00000020, 1318 MN_TRUSTED_MODE = -1 1319 }; 1320 1321 // Accessors for code generation: 1322 static int clazz_offset() { CHECK_INIT(_clazz_offset); } 1323 static int type_offset() { CHECK_INIT(_type_offset); } 1324 static int flags_offset() { CHECK_INIT(_flags_offset); } 1325 static int method_offset() { CHECK_INIT(_method_offset); } 1326 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); } 1327 }; 1328 1329 1330 // Interface to java.lang.invoke.MethodType objects 1331 1332 class java_lang_invoke_MethodType: AllStatic { 1333 friend class JavaClasses; 1334 1335 private: 1336 static int _rtype_offset; 1337 static int _ptypes_offset; 1338 1339 static void compute_offsets(); 1340 1341 public: 1342 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1343 // Accessors 1344 static oop rtype(oop mt); 1345 static objArrayOop ptypes(oop mt); 1346 1347 static oop ptype(oop mt, int index); 1348 static int ptype_count(oop mt); 1349 1350 static int ptype_slot_count(oop mt); // extra counts for long/double 1351 static int rtype_slot_count(oop mt); // extra counts for long/double 1352 1353 static Symbol* as_signature(oop mt, bool intern_if_not_found); 1354 static void print_signature(oop mt, outputStream* st); 1355 1356 static bool is_instance(oop obj); 1357 1358 static bool equals(oop mt1, oop mt2); 1359 1360 // Accessors for code generation: 1361 static int rtype_offset() { CHECK_INIT(_rtype_offset); } 1362 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); } 1363 }; 1364 1365 1366 // Interface to java.lang.invoke.CallSite objects 1367 1368 class java_lang_invoke_CallSite: AllStatic { 1369 friend class JavaClasses; 1370 1371 private: 1372 static int _target_offset; 1373 static int _context_offset; 1374 1375 static void compute_offsets(); 1376 1377 public: 1378 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1379 // Accessors 1380 static oop target( oop site); 1381 static void set_target( oop site, oop target); 1382 static void set_target_volatile( oop site, oop target); 1383 1384 static oop context_no_keepalive(oop site); 1385 1386 // Testers 1387 static bool is_subclass(Klass* klass) { 1388 return klass->is_subclass_of(vmClasses::CallSite_klass()); 1389 } 1390 static bool is_instance(oop obj); 1391 1392 // Accessors for code generation: 1393 static int target_offset() { CHECK_INIT(_target_offset); } 1394 static int context_offset() { CHECK_INIT(_context_offset); } 1395 }; 1396 1397 // Interface to java.lang.invoke.ConstantCallSite objects 1398 1399 class java_lang_invoke_ConstantCallSite: AllStatic { 1400 friend class JavaClasses; 1401 1402 private: 1403 static int _is_frozen_offset; 1404 1405 static void compute_offsets(); 1406 1407 public: 1408 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1409 // Accessors 1410 static jboolean is_frozen(oop site); 1411 1412 // Testers 1413 static bool is_subclass(Klass* klass) { 1414 return klass->is_subclass_of(vmClasses::ConstantCallSite_klass()); 1415 } 1416 static bool is_instance(oop obj); 1417 }; 1418 1419 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects 1420 1421 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \ 1422 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \ 1423 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false) 1424 1425 class DependencyContext; 1426 1427 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic { 1428 friend class JavaClasses; 1429 1430 private: 1431 static int _vmdependencies_offset; 1432 static int _last_cleanup_offset; 1433 1434 static void compute_offsets(); 1435 1436 public: 1437 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1438 // Accessors 1439 static DependencyContext vmdependencies(oop context); 1440 1441 // Testers 1442 static bool is_subclass(Klass* klass) { 1443 return klass->is_subclass_of(vmClasses::Context_klass()); 1444 } 1445 static bool is_instance(oop obj); 1446 }; 1447 1448 // Interface to java.security.AccessControlContext objects 1449 1450 class java_security_AccessControlContext: AllStatic { 1451 private: 1452 // Note that for this class the layout changed between JDK1.2 and JDK1.3, 1453 // so we compute the offsets at startup rather than hard-wiring them. 1454 static int _context_offset; 1455 static int _privilegedContext_offset; 1456 static int _isPrivileged_offset; 1457 static int _isAuthorized_offset; 1458 1459 static void compute_offsets(); 1460 public: 1461 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1462 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); 1463 1464 // Debugging/initialization 1465 friend class JavaClasses; 1466 }; 1467 1468 1469 // Interface to java.lang.ClassLoader objects 1470 1471 #define CLASSLOADER_INJECTED_FIELDS(macro) \ 1472 macro(java_lang_ClassLoader, loader_data, intptr_signature, false) 1473 1474 class java_lang_ClassLoader : AllStatic { 1475 private: 1476 static int _loader_data_offset; 1477 static int _parent_offset; 1478 static int _parallelCapable_offset; 1479 static int _name_offset; 1480 static int _nameAndId_offset; 1481 static int _unnamedModule_offset; 1482 1483 static void compute_offsets(); 1484 1485 public: 1486 // Support for CDS 1487 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1488 static int loader_data_offset() { return _loader_data_offset; } 1489 1490 static ClassLoaderData* loader_data_acquire(oop loader); 1491 static ClassLoaderData* loader_data(oop loader); 1492 static void release_set_loader_data(oop loader, ClassLoaderData* new_data); 1493 1494 static oop parent(oop loader); 1495 static oop parent_no_keepalive(oop loader); 1496 static oop name(oop loader); 1497 static oop nameAndId(oop loader); 1498 static bool isAncestor(oop loader, oop cl); 1499 1500 // Support for parallelCapable field 1501 static bool parallelCapable(oop the_class_mirror); 1502 1503 static bool is_trusted_loader(oop loader); 1504 1505 // Testers 1506 static bool is_subclass(Klass* klass) { 1507 return klass->is_subclass_of(vmClasses::ClassLoader_klass()); 1508 } 1509 static bool is_instance(oop obj); 1510 1511 static oop unnamedModule(oop loader); 1512 1513 // Debugging 1514 friend class JavaClasses; 1515 }; 1516 1517 1518 // Interface to java.lang.System objects 1519 1520 class java_lang_System : AllStatic { 1521 private: 1522 static int _static_in_offset; 1523 static int _static_out_offset; 1524 static int _static_err_offset; 1525 static int _static_security_offset; 1526 static int _static_allow_security_offset; 1527 static int _static_never_offset; 1528 1529 public: 1530 static int in_offset() { CHECK_INIT(_static_in_offset); } 1531 static int out_offset() { CHECK_INIT(_static_out_offset); } 1532 static int err_offset() { CHECK_INIT(_static_err_offset); } 1533 static bool allow_security_manager(); 1534 static bool has_security_manager(); 1535 1536 static void compute_offsets(); 1537 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1538 1539 // Debugging 1540 friend class JavaClasses; 1541 }; 1542 1543 1544 // Interface to java.lang.StackTraceElement objects 1545 1546 class java_lang_StackTraceElement: AllStatic { 1547 private: 1548 static int _declaringClassObject_offset; 1549 static int _classLoaderName_offset; 1550 static int _moduleName_offset; 1551 static int _moduleVersion_offset; 1552 static int _declaringClass_offset; 1553 static int _methodName_offset; 1554 static int _fileName_offset; 1555 static int _lineNumber_offset; 1556 1557 // Setters 1558 static void set_classLoaderName(oop element, oop value); 1559 static void set_moduleName(oop element, oop value); 1560 static void set_moduleVersion(oop element, oop value); 1561 static void set_declaringClass(oop element, oop value); 1562 static void set_methodName(oop element, oop value); 1563 static void set_fileName(oop element, oop value); 1564 static void set_lineNumber(oop element, int value); 1565 static void set_declaringClassObject(oop element, oop value); 1566 1567 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version, 1568 const methodHandle& method, int bci, 1569 Symbol*& source, oop& source_file, int& line_number, TRAPS); 1570 1571 public: 1572 // Create an instance of StackTraceElement 1573 static oop create(const methodHandle& method, int bci, TRAPS); 1574 1575 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method, 1576 int version, int bci, Symbol* name, TRAPS); 1577 1578 static void compute_offsets(); 1579 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1580 1581 #if INCLUDE_JVMCI 1582 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS); 1583 #endif 1584 1585 // Debugging 1586 friend class JavaClasses; 1587 }; 1588 1589 1590 class Backtrace: AllStatic { 1591 public: 1592 // Helper backtrace functions to store bci|version together. 1593 static int merge_bci_and_version(int bci, int version); 1594 static int merge_mid_and_cpref(int mid, int cpref); 1595 static int bci_at(unsigned int merged); 1596 static int version_at(unsigned int merged); 1597 static int mid_at(unsigned int merged); 1598 static int cpref_at(unsigned int merged); 1599 static int get_line_number(Method* method, int bci); 1600 static Symbol* get_source_file_name(InstanceKlass* holder, int version); 1601 1602 // Debugging 1603 friend class JavaClasses; 1604 }; 1605 1606 class java_lang_ClassFrameInfo: AllStatic { 1607 private: 1608 static int _classOrMemberName_offset; 1609 static int _flags_offset; 1610 1611 public: 1612 static oop classOrMemberName(oop info); 1613 static int flags(oop info); 1614 1615 // Setters 1616 static void init_class(Handle stackFrame, const methodHandle& m); 1617 static void init_method(Handle stackFrame, const methodHandle& m, TRAPS); 1618 1619 static void compute_offsets(); 1620 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1621 1622 // Debugging 1623 friend class JavaClasses; 1624 }; 1625 1626 // Interface to java.lang.StackFrameInfo objects 1627 1628 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \ 1629 macro(java_lang_StackFrameInfo, version, short_signature, false) 1630 1631 class java_lang_StackFrameInfo: AllStatic { 1632 private: 1633 static int _type_offset; 1634 static int _name_offset; 1635 static int _bci_offset; 1636 static int _version_offset; 1637 static int _contScope_offset; 1638 1639 public: 1640 // Getters 1641 static oop name(oop info); 1642 static oop type(oop info); 1643 static Method* get_method(oop info); 1644 1645 // Setters 1646 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS); 1647 static void set_name(oop info, oop value); 1648 static void set_type(oop info, oop value); 1649 static void set_bci(oop info, int value); 1650 1651 static void set_version(oop info, short value); 1652 static void set_contScope(oop info, oop value); 1653 1654 static void compute_offsets(); 1655 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1656 1657 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS); 1658 1659 // Debugging 1660 friend class JavaClasses; 1661 }; 1662 1663 class java_lang_LiveStackFrameInfo: AllStatic { 1664 private: 1665 static int _monitors_offset; 1666 static int _locals_offset; 1667 static int _operands_offset; 1668 static int _mode_offset; 1669 1670 public: 1671 static void set_monitors(oop info, oop value); 1672 static void set_locals(oop info, oop value); 1673 static void set_operands(oop info, oop value); 1674 static void set_mode(oop info, int value); 1675 1676 static void compute_offsets(); 1677 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1678 1679 // Debugging 1680 friend class JavaClasses; 1681 }; 1682 1683 // Interface to java.lang.reflect.RecordComponent objects 1684 1685 class java_lang_reflect_RecordComponent: AllStatic { 1686 private: 1687 static int _clazz_offset; 1688 static int _name_offset; 1689 static int _type_offset; 1690 static int _accessor_offset; 1691 static int _signature_offset; 1692 static int _annotations_offset; 1693 static int _typeAnnotations_offset; 1694 1695 // Setters 1696 static void set_clazz(oop element, oop value); 1697 static void set_name(oop element, oop value); 1698 static void set_type(oop element, oop value); 1699 static void set_accessor(oop element, oop value); 1700 static void set_signature(oop element, oop value); 1701 static void set_annotations(oop element, oop value); 1702 static void set_typeAnnotations(oop element, oop value); 1703 1704 public: 1705 // Create an instance of RecordComponent 1706 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS); 1707 1708 static void compute_offsets(); 1709 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1710 1711 // Debugging 1712 friend class JavaClasses; 1713 }; 1714 1715 1716 // Interface to java.lang.AssertionStatusDirectives objects 1717 1718 class java_lang_AssertionStatusDirectives: AllStatic { 1719 private: 1720 static int _classes_offset; 1721 static int _classEnabled_offset; 1722 static int _packages_offset; 1723 static int _packageEnabled_offset; 1724 static int _deflt_offset; 1725 1726 public: 1727 // Setters 1728 static void set_classes(oop obj, oop val); 1729 static void set_classEnabled(oop obj, oop val); 1730 static void set_packages(oop obj, oop val); 1731 static void set_packageEnabled(oop obj, oop val); 1732 static void set_deflt(oop obj, bool val); 1733 1734 static void compute_offsets(); 1735 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1736 1737 // Debugging 1738 friend class JavaClasses; 1739 }; 1740 1741 1742 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { 1743 private: 1744 static int _owner_offset; 1745 public: 1746 static void compute_offsets(); 1747 static oop get_owner_threadObj(oop obj); 1748 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1749 }; 1750 1751 // Interface to jdk.internal.misc.UnsafeConsants 1752 1753 class jdk_internal_misc_UnsafeConstants : AllStatic { 1754 public: 1755 static void set_unsafe_constants(); 1756 static void compute_offsets() { } 1757 static void serialize_offsets(SerializeClosure* f) { } 1758 }; 1759 1760 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects 1761 1762 class vector_VectorPayload : AllStatic { 1763 private: 1764 static int _payload_offset; 1765 public: 1766 static void set_payload(oop o, oop val); 1767 1768 static void compute_offsets(); 1769 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1770 1771 // Testers 1772 static bool is_subclass(Klass* klass) { 1773 return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass()); 1774 } 1775 static bool is_instance(oop obj); 1776 }; 1777 1778 class java_lang_Integer : AllStatic { 1779 public: 1780 static jint value(oop obj); 1781 }; 1782 1783 class java_lang_Long : AllStatic { 1784 public: 1785 static jlong value(oop obj); 1786 }; 1787 1788 class java_lang_Character : AllStatic { 1789 public: 1790 static jchar value(oop obj); 1791 }; 1792 1793 class java_lang_Short : AllStatic { 1794 public: 1795 static jshort value(oop obj); 1796 }; 1797 1798 class java_lang_Byte : AllStatic { 1799 public: 1800 static jbyte value(oop obj); 1801 }; 1802 1803 class java_lang_Boolean : AllStatic { 1804 private: 1805 static int _static_TRUE_offset; 1806 static int _static_FALSE_offset; 1807 public: 1808 static Symbol* symbol(); 1809 static void compute_offsets(InstanceKlass* k); 1810 static oop get_TRUE(InstanceKlass *k); 1811 static oop get_FALSE(InstanceKlass *k); 1812 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1813 static jboolean value(oop obj); 1814 }; 1815 1816 class java_lang_Integer_IntegerCache : AllStatic { 1817 private: 1818 static int _static_cache_offset; 1819 public: 1820 static Symbol* symbol(); 1821 static void compute_offsets(InstanceKlass* k); 1822 static objArrayOop cache(InstanceKlass *k); 1823 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1824 }; 1825 1826 class java_lang_Long_LongCache : AllStatic { 1827 private: 1828 static int _static_cache_offset; 1829 public: 1830 static Symbol* symbol(); 1831 static void compute_offsets(InstanceKlass* k); 1832 static objArrayOop cache(InstanceKlass *k); 1833 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1834 }; 1835 1836 class java_lang_Character_CharacterCache : AllStatic { 1837 private: 1838 static int _static_cache_offset; 1839 public: 1840 static Symbol* symbol(); 1841 static void compute_offsets(InstanceKlass* k); 1842 static objArrayOop cache(InstanceKlass *k); 1843 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1844 }; 1845 1846 class java_lang_Short_ShortCache : AllStatic { 1847 private: 1848 static int _static_cache_offset; 1849 public: 1850 static Symbol* symbol(); 1851 static void compute_offsets(InstanceKlass* k); 1852 static objArrayOop cache(InstanceKlass *k); 1853 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1854 }; 1855 1856 class java_lang_Byte_ByteCache : AllStatic { 1857 private: 1858 static int _static_cache_offset; 1859 public: 1860 static Symbol* symbol(); 1861 static void compute_offsets(InstanceKlass* k); 1862 static objArrayOop cache(InstanceKlass *k); 1863 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1864 }; 1865 1866 1867 // Interface to java.lang.InternalError objects 1868 1869 #define INTERNALERROR_INJECTED_FIELDS(macro) \ 1870 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false) 1871 1872 class java_lang_InternalError : AllStatic { 1873 private: 1874 static int _during_unsafe_access_offset; 1875 public: 1876 static jboolean during_unsafe_access(oop internal_error); 1877 static void set_during_unsafe_access(oop internal_error); 1878 static void compute_offsets(); 1879 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1880 }; 1881 1882 // Use to declare fields that need to be injected into Java classes 1883 // for the JVM to use. The name_index and signature_index are 1884 // declared in vmSymbols. The may_be_java flag is used to declare 1885 // fields that might already exist in Java but should be injected if 1886 // they don't. Otherwise the field is unconditionally injected and 1887 // the JVM uses the injected one. This is to ensure that name 1888 // collisions don't occur. In general may_be_java should be false 1889 // unless there's a good reason. 1890 1891 class InjectedField { 1892 public: 1893 const vmClassID klass_id; 1894 const vmSymbolID name_index; 1895 const vmSymbolID signature_index; 1896 const bool may_be_java; 1897 1898 1899 Klass* klass() const { return vmClasses::klass_at(klass_id); } 1900 Symbol* name() const { return lookup_symbol(name_index); } 1901 Symbol* signature() const { return lookup_symbol(signature_index); } 1902 1903 int compute_offset(); 1904 1905 // Find the Symbol for this index 1906 static Symbol* lookup_symbol(vmSymbolID symbol_index) { 1907 return Symbol::vm_symbol_at(symbol_index); 1908 } 1909 }; 1910 1911 1912 // Interface to hard-coded offset checking 1913 1914 enum class InjectedFieldID : int; 1915 1916 class JavaClasses : AllStatic { 1917 private: 1918 1919 static InjectedField _injected_fields[]; 1920 1921 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; 1922 public: 1923 1924 static int compute_injected_offset(InjectedFieldID id); 1925 1926 static void compute_offsets(); 1927 static void check_offsets() PRODUCT_RETURN; 1928 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN; 1929 static InjectedField* get_injected(Symbol* class_name, int* field_count); 1930 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false); 1931 1932 static void compute_offset(int &dest_offset, 1933 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol, 1934 bool is_static = false); 1935 static void compute_offset(int& dest_offset, InstanceKlass* ik, 1936 const char* name_string, Symbol* signature_symbol, 1937 bool is_static = false); 1938 }; 1939 1940 #undef CHECK_INIT 1941 1942 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP