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 int utf8_length(oop java_string); 135 static int utf8_length(oop java_string, typeArrayOop string_value); 136 137 // String converters 138 static char* as_utf8_string(oop java_string); 139 static char* as_utf8_string(oop java_string, int& length); 140 static char* as_utf8_string_full(oop java_string, char* buf, int buflen, int& length); 141 static char* as_utf8_string(oop java_string, char* buf, int buflen); 142 static char* as_utf8_string(oop java_string, int start, int len); 143 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen); 144 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen); 145 static char* as_platform_dependent_str(Handle java_string, TRAPS); 146 static jchar* as_unicode_string(oop java_string, int& length, TRAPS); 147 static jchar* as_unicode_string_or_null(oop java_string, int& length); 148 // produce an ascii string with all other values quoted using \u#### 149 static char* as_quoted_ascii(oop java_string); 150 151 // Compute the hash value for a java.lang.String object which would 152 // contain the characters passed in. 153 // 154 // As the hash value used by the String object itself, in 155 // String.hashCode(). This value is normally calculated in Java code 156 // in the String.hashCode method(), but is precomputed for String 157 // objects in the shared archive file. 158 // hash P(31) from Kernighan & Ritchie 159 // 160 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode(). 161 static unsigned int hash_code(const jchar* s, int len) { 162 unsigned int h = 0; 163 while (len-- > 0) { 164 h = 31*h + (unsigned int) *s; 165 s++; 166 } 167 return h; 168 } 169 170 static unsigned int hash_code(const jbyte* s, int len) { 171 unsigned int h = 0; 172 while (len-- > 0) { 173 h = 31*h + (((unsigned int) *s) & 0xFF); 174 s++; 175 } 176 return h; 177 } 178 179 static unsigned int hash_code(oop java_string); 180 static unsigned int hash_code_noupdate(oop java_string); 181 182 static bool equals(oop java_string, const jchar* chars, int len); 183 static bool equals(oop str1, oop str2); 184 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2); 185 186 // Conversion between '.' and '/' formats, and allocate a String from the result. 187 static Handle externalize_classname(Symbol* java_name, TRAPS); 188 189 // Conversion 190 static Symbol* as_symbol(oop java_string); 191 static Symbol* as_symbol_or_null(oop java_string); 192 193 // Tester 194 static inline bool is_instance(oop obj); 195 196 // Debugging 197 static void print(oop java_string, outputStream* st, int max_length = MaxStringPrintSize); 198 friend class JavaClasses; 199 friend class StringTable; 200 }; 201 202 203 // Interface to java.lang.Class objects 204 205 #define CLASS_INJECTED_FIELDS(macro) \ 206 macro(java_lang_Class, klass, intptr_signature, false) \ 207 macro(java_lang_Class, array_klass, intptr_signature, false) \ 208 macro(java_lang_Class, oop_size, int_signature, false) \ 209 macro(java_lang_Class, static_oop_field_count, int_signature, false) \ 210 macro(java_lang_Class, protection_domain, object_signature, false) \ 211 macro(java_lang_Class, source_file, object_signature, false) \ 212 macro(java_lang_Class, init_lock, object_signature, false) 213 214 class java_lang_Class : AllStatic { 215 friend class VMStructs; 216 friend class JVMCIVMStructs; 217 218 private: 219 220 // The fake offsets are added by the class loader when java.lang.Class is loaded 221 222 static int _klass_offset; 223 static int _array_klass_offset; 224 225 static int _oop_size_offset; 226 static int _static_oop_field_count_offset; 227 228 static int _protection_domain_offset; 229 static int _init_lock_offset; 230 static int _signers_offset; 231 static int _class_loader_offset; 232 static int _module_offset; 233 static int _component_mirror_offset; 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_init_lock(oop java_class, oop init_lock); 245 static void set_protection_domain(oop java_class, oop protection_domain); 246 static void set_class_loader(oop java_class, oop class_loader); 247 static void set_component_mirror(oop java_class, oop comp_mirror); 248 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, 249 Handle classData, TRAPS); 250 static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module); 251 public: 252 static void allocate_fixup_lists(); 253 static void compute_offsets(); 254 255 // Instance creation 256 static void allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData, 257 Handle& mirror, Handle& comp_mirror, TRAPS); // returns mirror and comp_mirror 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); 262 263 // Archiving 264 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 265 static void create_scratch_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN; 266 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module, 267 Handle protection_domain, 268 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false); 269 270 static void fixup_module_field(Klass* k, Handle module); 271 272 // Conversion 273 static Klass* as_Klass(oop java_class); 274 static void set_klass(oop java_class, Klass* klass); 275 static BasicType as_BasicType(oop java_class, Klass** reference_klass = nullptr); 276 static Symbol* as_signature(oop java_class, bool intern_if_not_found); 277 static void print_signature(oop java_class, outputStream *st); 278 static const char* as_external_name(oop java_class); 279 // Testing 280 static bool is_instance(oop obj); 281 282 static bool is_primitive(oop java_class); 283 static BasicType primitive_type(oop java_class); 284 static oop primitive_mirror(BasicType t); 285 // JVM_NewArray support 286 static Klass* array_klass_acquire(oop java_class); 287 static void release_set_array_klass(oop java_class, Klass* klass); 288 // compiler support for class operations 289 static int klass_offset() { CHECK_INIT(_klass_offset); } 290 static int array_klass_offset() { CHECK_INIT(_array_klass_offset); } 291 // Support for classRedefinedCount field 292 static int classRedefinedCount(oop the_class_mirror); 293 static void set_classRedefinedCount(oop the_class_mirror, int value); 294 295 // Support for embedded per-class oops 296 static oop protection_domain(oop java_class); 297 static oop init_lock(oop java_class); 298 static void clear_init_lock(oop java_class) { 299 set_init_lock(java_class, nullptr); 300 } 301 static oop component_mirror(oop java_class); 302 static objArrayOop signers(oop java_class); 303 static oop class_data(oop java_class); 304 static void set_class_data(oop java_class, oop classData); 305 306 static int component_mirror_offset() { return _component_mirror_offset; } 307 308 static oop class_loader(oop java_class); 309 static void set_module(oop java_class, oop module); 310 static oop module(oop java_class); 311 312 static oop name(Handle java_class, TRAPS); 313 314 static oop source_file(oop java_class); 315 static void set_source_file(oop java_class, oop source_file); 316 317 static size_t oop_size(oop java_class); 318 static void set_oop_size(HeapWord* java_class, size_t size); 319 static int static_oop_field_count(oop java_class); 320 static void set_static_oop_field_count(oop java_class, int size); 321 322 static GrowableArray<Klass*>* fixup_mirror_list() { 323 return _fixup_mirror_list; 324 } 325 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) { 326 _fixup_mirror_list = v; 327 } 328 329 static GrowableArray<Klass*>* fixup_module_field_list() { 330 return _fixup_module_field_list; 331 } 332 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) { 333 _fixup_module_field_list = v; 334 } 335 336 // Debugging 337 friend class JavaClasses; 338 }; 339 340 // Interface to java.lang.Thread objects 341 342 #define THREAD_INJECTED_FIELDS(macro) \ 343 macro(java_lang_Thread, jvmti_thread_state, intptr_signature, false) \ 344 macro(java_lang_Thread, jvmti_VTMS_transition_disable_count, int_signature, false) \ 345 macro(java_lang_Thread, jvmti_is_in_VTMS_transition, bool_signature, false) \ 346 JFR_ONLY(macro(java_lang_Thread, jfr_epoch, short_signature, false)) 347 348 class java_lang_Thread : AllStatic { 349 friend class java_lang_VirtualThread; 350 friend class JVMCIVMStructs; 351 private: 352 // Note that for this class the layout changed between JDK1.2 and JDK1.3, 353 // so we compute the offsets at startup rather than hard-wiring them. 354 static int _holder_offset; 355 static int _name_offset; 356 static int _contextClassLoader_offset; 357 static int _inheritedAccessControlContext_offset; 358 static int _eetop_offset; 359 static int _jvmti_thread_state_offset; 360 static int _jvmti_VTMS_transition_disable_count_offset; 361 static int _jvmti_is_in_VTMS_transition_offset; 362 static int _interrupted_offset; 363 static int _interruptLock_offset; 364 static int _tid_offset; 365 static int _continuation_offset; 366 static int _park_blocker_offset; 367 static int _scopedValueBindings_offset; 368 JFR_ONLY(static int _jfr_epoch_offset;) 369 370 static void compute_offsets(); 371 372 public: 373 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 374 375 // Returns the JavaThread associated with the thread obj 376 static JavaThread* thread(oop java_thread); 377 static JavaThread* thread_acquire(oop java_thread); 378 // Set JavaThread for instance 379 static void set_thread(oop java_thread, JavaThread* thread); 380 static void release_set_thread(oop java_thread, JavaThread* thread); 381 // FieldHolder 382 static oop holder(oop java_thread); 383 // interruptLock 384 static oop interrupt_lock(oop java_thread); 385 // Interrupted status 386 static bool interrupted(oop java_thread); 387 static void set_interrupted(oop java_thread, bool val); 388 // Name 389 static oop name(oop java_thread); 390 static void set_name(oop java_thread, oop name); 391 // Priority 392 static ThreadPriority priority(oop java_thread); 393 static void set_priority(oop java_thread, ThreadPriority priority); 394 // Thread group 395 static oop threadGroup(oop java_thread); 396 // Alive (NOTE: this is not really a field, but provides the correct 397 // definition without doing a Java call) 398 static bool is_alive(oop java_thread); 399 // Daemon 400 static bool is_daemon(oop java_thread); 401 static void set_daemon(oop java_thread); 402 // Context ClassLoader 403 static oop context_class_loader(oop java_thread); 404 // Control context 405 static oop inherited_access_control_context(oop java_thread); 406 // Stack size hint 407 static jlong stackSize(oop java_thread); 408 // Thread ID 409 static int64_t thread_id(oop java_thread); 410 static ByteSize thread_id_offset(); 411 // Continuation 412 static inline oop continuation(oop java_thread); 413 414 static JvmtiThreadState* jvmti_thread_state(oop java_thread); 415 static void set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state); 416 static int VTMS_transition_disable_count(oop java_thread); 417 static void inc_VTMS_transition_disable_count(oop java_thread); 418 static void dec_VTMS_transition_disable_count(oop java_thread); 419 static bool is_in_VTMS_transition(oop java_thread); 420 static void set_is_in_VTMS_transition(oop java_thread, bool val); 421 static int is_in_VTMS_transition_offset(); 422 423 // Clear all scoped value bindings on error 424 static void clear_scopedValueBindings(oop java_thread); 425 426 // Blocker object responsible for thread parking 427 static oop park_blocker(oop java_thread); 428 429 // Write thread status info to threadStatus field of java.lang.Thread. 430 static void set_thread_status(oop java_thread_oop, JavaThreadStatus status); 431 // Read thread status info from threadStatus field of java.lang.Thread. 432 static JavaThreadStatus get_thread_status(oop java_thread_oop); 433 434 static const char* thread_status_name(oop java_thread_oop); 435 436 // Fill in current stack trace, can cause GC 437 static oop async_get_stack_trace(oop java_thread, TRAPS); 438 439 JFR_ONLY(static u2 jfr_epoch(oop java_thread);) 440 JFR_ONLY(static void set_jfr_epoch(oop java_thread, u2 epoch);) 441 JFR_ONLY(static int jfr_epoch_offset() { CHECK_INIT(_jfr_epoch_offset); }) 442 443 // Debugging 444 friend class JavaClasses; 445 }; 446 447 // Interface to java.lang.Thread$FieldHolder objects 448 449 class java_lang_Thread_FieldHolder : AllStatic { 450 private: 451 static int _group_offset; 452 static int _priority_offset; 453 static int _stackSize_offset; 454 static int _daemon_offset; 455 static int _thread_status_offset; 456 457 static void compute_offsets(); 458 459 public: 460 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 461 462 static oop threadGroup(oop holder); 463 464 static ThreadPriority priority(oop holder); 465 static void set_priority(oop holder, ThreadPriority priority); 466 467 static jlong stackSize(oop holder); 468 469 static bool is_daemon(oop holder); 470 static void set_daemon(oop holder, bool val); 471 472 static void set_thread_status(oop holder, JavaThreadStatus status); 473 static JavaThreadStatus get_thread_status(oop holder); 474 475 friend class JavaClasses; 476 }; 477 478 // Interface to java.lang.Thread$Constants objects 479 480 class java_lang_Thread_Constants : AllStatic { 481 private: 482 static int _static_VTHREAD_GROUP_offset; 483 static int _static_NOT_SUPPORTED_CLASSLOADER_offset; 484 485 static void compute_offsets(); 486 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 487 488 public: 489 static oop get_VTHREAD_GROUP(); 490 491 friend class JavaClasses; 492 }; 493 494 // Interface to java.lang.ThreadGroup objects 495 496 class java_lang_ThreadGroup : AllStatic { 497 private: 498 static int _parent_offset; 499 static int _name_offset; 500 static int _maxPriority_offset; 501 static int _daemon_offset; 502 503 static void compute_offsets(); 504 public: 505 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 506 507 // parent ThreadGroup 508 static oop parent(oop java_thread_group); 509 // name 510 static const char* name(oop java_thread_group); 511 // maxPriority in group 512 static ThreadPriority maxPriority(oop java_thread_group); 513 // Daemon 514 static bool is_daemon(oop java_thread_group); 515 516 // Debugging 517 friend class JavaClasses; 518 }; 519 520 521 // Interface to java.lang.VirtualThread objects 522 523 class java_lang_VirtualThread : AllStatic { 524 private: 525 static int static_vthread_scope_offset; 526 static int _carrierThread_offset; 527 static int _continuation_offset; 528 static int _state_offset; 529 JFR_ONLY(static int _jfr_epoch_offset;) 530 public: 531 enum { 532 NEW = 0, 533 STARTED = 1, 534 RUNNING = 2, 535 PARKING = 3, 536 PARKED = 4, 537 PINNED = 5, 538 TIMED_PARKING = 6, 539 TIMED_PARKED = 7, 540 TIMED_PINNED = 8, 541 UNPARKED = 9, 542 YIELDING = 10, 543 YIELDED = 11, 544 TERMINATED = 99, 545 546 // additional state bits 547 SUSPENDED = 1 << 8, // suspended when unmounted 548 }; 549 550 static void compute_offsets(); 551 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 552 553 // Testers 554 static bool is_subclass(Klass* klass) { 555 return klass->is_subclass_of(vmClasses::VirtualThread_klass()); 556 } 557 static bool is_instance(oop obj); 558 559 static oop vthread_scope(); 560 static oop carrier_thread(oop vthread); 561 static oop continuation(oop vthread); 562 static int state(oop vthread); 563 static JavaThreadStatus map_state_to_thread_status(int state); 564 }; 565 566 567 // Interface to java.lang.Throwable objects 568 569 class java_lang_Throwable: AllStatic { 570 friend class BacktraceBuilder; 571 friend class BacktraceIterator; 572 573 private: 574 // Trace constants 575 enum { 576 trace_methods_offset = 0, 577 trace_bcis_offset = 1, 578 trace_mirrors_offset = 2, 579 trace_names_offset = 3, 580 trace_conts_offset = 4, 581 trace_next_offset = 5, 582 trace_hidden_offset = 6, 583 trace_size = 7, 584 trace_chunk_size = 32 585 }; 586 587 static int _backtrace_offset; 588 static int _detailMessage_offset; 589 static int _stackTrace_offset; 590 static int _depth_offset; 591 static int _cause_offset; 592 static int _static_unassigned_stacktrace_offset; 593 594 // StackTrace (programmatic access, new since 1.4) 595 static void clear_stacktrace(oop throwable); 596 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) 597 static void set_stacktrace(oop throwable, oop st_element_array); 598 static oop unassigned_stacktrace(); 599 600 public: 601 // Backtrace 602 static oop backtrace(oop throwable); 603 static void set_backtrace(oop throwable, oop value); 604 static int depth(oop throwable); 605 static void set_depth(oop throwable, int value); 606 // Message 607 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); } 608 static oop message(oop throwable); 609 static const char* message_as_utf8(oop throwable); 610 static void set_message(oop throwable, oop value); 611 612 static oop cause(oop throwable); 613 614 static void print_stack_element(outputStream *st, Method* method, int bci); 615 616 static void compute_offsets(); 617 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 618 619 // Allocate space for backtrace (created but stack trace not filled in) 620 static void allocate_backtrace(Handle throwable, TRAPS); 621 // Fill in current stack trace for throwable with preallocated backtrace (no GC) 622 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); 623 // Fill in current stack trace, can cause GC 624 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS); 625 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle()); 626 627 // Programmatic access to stack trace 628 static void get_stack_trace_elements(int depth, Handle backtrace, objArrayHandle stack_trace, TRAPS); 629 630 // For recreating class initialization error exceptions. 631 static Handle create_initialization_error(JavaThread* current, Handle throwable); 632 633 // Printing 634 static void print(oop throwable, outputStream* st); 635 static void print_stack_trace(Handle throwable, outputStream* st); 636 static void java_printStackTrace(Handle throwable, TRAPS); 637 // Debugging 638 friend class JavaClasses; 639 // Gets the method and bci of the top frame (TOS). Returns false if this failed. 640 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci); 641 }; 642 643 644 // Interface to java.lang.reflect.AccessibleObject objects 645 646 class java_lang_reflect_AccessibleObject: AllStatic { 647 private: 648 // Note that to reduce dependencies on the JDK we compute these 649 // offsets at run-time. 650 static int _override_offset; 651 652 static void compute_offsets(); 653 654 public: 655 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 656 657 // Accessors 658 static jboolean override(oop reflect); 659 static void set_override(oop reflect, jboolean value); 660 661 // Debugging 662 friend class JavaClasses; 663 }; 664 665 666 // Interface to java.lang.reflect.Method objects 667 668 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { 669 private: 670 // Note that to reduce dependencies on the JDK we compute these 671 // offsets at run-time. 672 static int _clazz_offset; 673 static int _name_offset; 674 static int _returnType_offset; 675 static int _parameterTypes_offset; 676 static int _exceptionTypes_offset; 677 static int _slot_offset; 678 static int _modifiers_offset; 679 static int _signature_offset; 680 static int _annotations_offset; 681 static int _parameter_annotations_offset; 682 static int _annotation_default_offset; 683 684 static void compute_offsets(); 685 public: 686 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 687 688 // Allocation 689 static Handle create(TRAPS); 690 691 // Accessors 692 static oop clazz(oop reflect); 693 static void set_clazz(oop reflect, oop value); 694 695 static void set_name(oop method, oop value); 696 697 static oop return_type(oop method); 698 static void set_return_type(oop method, oop value); 699 700 static oop parameter_types(oop method); 701 static void set_parameter_types(oop method, oop value); 702 703 static int slot(oop reflect); 704 static void set_slot(oop reflect, int value); 705 706 static void set_exception_types(oop method, oop value); 707 static void set_modifiers(oop method, int value); 708 static void set_signature(oop method, oop value); 709 static void set_annotations(oop method, oop value); 710 static void set_parameter_annotations(oop method, oop value); 711 static void set_annotation_default(oop method, oop value); 712 713 // Debugging 714 friend class JavaClasses; 715 }; 716 717 718 // Interface to java.lang.reflect.Constructor objects 719 720 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { 721 private: 722 // Note that to reduce dependencies on the JDK we compute these 723 // offsets at run-time. 724 static int _clazz_offset; 725 static int _parameterTypes_offset; 726 static int _exceptionTypes_offset; 727 static int _slot_offset; 728 static int _modifiers_offset; 729 static int _signature_offset; 730 static int _annotations_offset; 731 static int _parameter_annotations_offset; 732 733 static void compute_offsets(); 734 public: 735 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 736 737 // Allocation 738 static Handle create(TRAPS); 739 740 // Accessors 741 static oop clazz(oop reflect); 742 static void set_clazz(oop reflect, oop value); 743 744 static oop parameter_types(oop constructor); 745 static void set_parameter_types(oop constructor, oop value); 746 747 static int slot(oop reflect); 748 static void set_slot(oop reflect, int value); 749 750 static void set_exception_types(oop constructor, oop value); 751 static void set_modifiers(oop constructor, int value); 752 static void set_signature(oop constructor, oop value); 753 static void set_annotations(oop constructor, oop value); 754 static void set_parameter_annotations(oop method, oop value); 755 756 // Debugging 757 friend class JavaClasses; 758 }; 759 760 761 // Interface to java.lang.reflect.Field objects 762 763 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { 764 private: 765 // Note that to reduce dependencies on the JDK we compute these 766 // offsets at run-time. 767 static int _clazz_offset; 768 static int _name_offset; 769 static int _type_offset; 770 static int _slot_offset; 771 static int _modifiers_offset; 772 static int _trusted_final_offset; 773 static int _signature_offset; 774 static int _annotations_offset; 775 776 static void compute_offsets(); 777 778 public: 779 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 780 781 // Allocation 782 static Handle create(TRAPS); 783 784 // Accessors 785 static oop clazz(oop reflect); 786 static void set_clazz(oop reflect, oop value); 787 788 static oop name(oop field); 789 static void set_name(oop field, oop value); 790 791 static oop type(oop field); 792 static void set_type(oop field, oop value); 793 794 static int slot(oop reflect); 795 static void set_slot(oop reflect, int value); 796 797 static int modifiers(oop field); 798 static void set_modifiers(oop field, int value); 799 800 static void set_trusted_final(oop field); 801 802 static void set_signature(oop constructor, oop value); 803 static void set_annotations(oop constructor, oop value); 804 805 // Debugging 806 friend class JavaClasses; 807 }; 808 809 class java_lang_reflect_Parameter { 810 private: 811 // Note that to reduce dependencies on the JDK we compute these 812 // offsets at run-time. 813 static int _name_offset; 814 static int _modifiers_offset; 815 static int _index_offset; 816 static int _executable_offset; 817 818 static void compute_offsets(); 819 820 public: 821 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 822 823 // Allocation 824 static Handle create(TRAPS); 825 826 // Accessors 827 static oop name(oop field); 828 static void set_name(oop field, oop value); 829 830 static int index(oop reflect); 831 static void set_index(oop reflect, int value); 832 833 static int modifiers(oop reflect); 834 static void set_modifiers(oop reflect, int value); 835 836 static oop executable(oop constructor); 837 static void set_executable(oop constructor, oop value); 838 839 friend class JavaClasses; 840 }; 841 842 #define MODULE_INJECTED_FIELDS(macro) \ 843 macro(java_lang_Module, module_entry, intptr_signature, false) 844 845 class java_lang_Module { 846 private: 847 static int _loader_offset; 848 static int _name_offset; 849 static int _module_entry_offset; 850 851 static void compute_offsets(); 852 853 public: 854 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 855 856 // Allocation 857 static Handle create(Handle loader, Handle module_name, TRAPS); 858 859 // Testers 860 static bool is_instance(oop obj); 861 862 // Accessors 863 static oop loader(oop module); 864 static void set_loader(oop module, oop value); 865 866 // CDS 867 static int module_entry_offset() { return _module_entry_offset; } 868 869 static oop name(oop module); 870 static void set_name(oop module, oop value); 871 872 static ModuleEntry* module_entry(oop module); 873 static ModuleEntry* module_entry_raw(oop module); 874 static void set_module_entry(oop module, ModuleEntry* module_entry); 875 876 friend class JavaClasses; 877 }; 878 879 // Interface to jdk.internal.reflect.ConstantPool objects 880 class reflect_ConstantPool { 881 private: 882 // Note that to reduce dependencies on the JDK we compute these 883 // offsets at run-time. 884 static int _oop_offset; 885 886 static void compute_offsets(); 887 888 public: 889 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 890 891 // Allocation 892 static Handle create(TRAPS); 893 894 // Accessors 895 static void set_cp(oop reflect, ConstantPool* value); 896 static int oop_offset() { CHECK_INIT(_oop_offset); } 897 898 static ConstantPool* get_cp(oop reflect); 899 900 // Debugging 901 friend class JavaClasses; 902 }; 903 904 905 // Interface to java.lang primitive type boxing objects: 906 // - java.lang.Boolean 907 // - java.lang.Character 908 // - java.lang.Float 909 // - java.lang.Double 910 // - java.lang.Byte 911 // - java.lang.Short 912 // - java.lang.Integer 913 // - java.lang.Long 914 915 // This could be separated out into 8 individual classes. 916 917 class java_lang_boxing_object: AllStatic { 918 private: 919 static int _value_offset; 920 static int _long_value_offset; 921 922 static void compute_offsets(); 923 static oop initialize_and_allocate(BasicType type, TRAPS); 924 public: 925 // Allocation. Returns a boxed value, or null for invalid type. 926 static oop create(BasicType type, jvalue* value, TRAPS); 927 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. 928 static BasicType get_value(oop box, jvalue* value); 929 static BasicType set_value(oop box, jvalue* value); 930 static BasicType basic_type(oop box); 931 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } 932 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } 933 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } 934 static void print(BasicType type, jvalue* value, outputStream* st); 935 936 static int value_offset(BasicType type) { 937 return is_double_word_type(type) ? _long_value_offset : _value_offset; 938 } 939 940 static void serialize_offsets(SerializeClosure* f); 941 942 // Debugging 943 friend class JavaClasses; 944 }; 945 946 947 948 // Interface to java.lang.ref.Reference objects 949 950 class java_lang_ref_Reference: AllStatic { 951 static int _referent_offset; 952 static int _queue_offset; 953 static int _next_offset; 954 static int _discovered_offset; 955 956 static bool _offsets_initialized; 957 958 public: 959 // Accessors 960 static inline oop weak_referent_no_keepalive(oop ref); 961 static inline oop weak_referent(oop ref); 962 static inline oop phantom_referent_no_keepalive(oop ref); 963 static inline oop unknown_referent_no_keepalive(oop ref); 964 static inline void clear_referent(oop ref); 965 static inline void clear_referent_raw(oop ref); 966 static inline HeapWord* referent_addr_raw(oop ref); 967 static inline oop next(oop ref); 968 static inline void set_next(oop ref, oop value); 969 static inline void set_next_raw(oop ref, oop value); 970 static inline HeapWord* next_addr_raw(oop ref); 971 static inline oop discovered(oop ref); 972 static inline void set_discovered(oop ref, oop value); 973 static inline void set_discovered_raw(oop ref, oop value); 974 static inline HeapWord* discovered_addr_raw(oop ref); 975 static bool is_referent_field(oop obj, ptrdiff_t offset); 976 static inline bool is_final(oop ref); 977 static inline bool is_phantom(oop ref); 978 static inline bool is_weak(oop ref); 979 static inline bool is_soft(oop ref); 980 981 static int referent_offset() { CHECK_INIT(_referent_offset); } 982 static int queue_offset() { CHECK_INIT(_queue_offset); } 983 static int next_offset() { CHECK_INIT(_next_offset); } 984 static int discovered_offset() { CHECK_INIT(_discovered_offset); } 985 986 static void compute_offsets(); 987 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 988 }; 989 990 991 // Interface to java.lang.ref.SoftReference objects 992 993 class java_lang_ref_SoftReference: public java_lang_ref_Reference { 994 static int _timestamp_offset; 995 static int _static_clock_offset; 996 997 public: 998 // Accessors 999 static jlong timestamp(oop ref); 1000 1001 // Accessors for statics 1002 static jlong clock(); 1003 static void set_clock(jlong value); 1004 1005 static void compute_offsets(); 1006 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1007 }; 1008 1009 // Interface to java.lang.invoke.MethodHandle objects 1010 1011 class java_lang_invoke_MethodHandle: AllStatic { 1012 friend class JavaClasses; 1013 1014 private: 1015 static int _type_offset; // the MethodType of this MH 1016 static int _form_offset; // the LambdaForm of this MH 1017 1018 static void compute_offsets(); 1019 1020 public: 1021 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1022 1023 // Accessors 1024 static oop type(oop mh); 1025 static void set_type(oop mh, oop mtype); 1026 1027 static oop form(oop mh); 1028 static void set_form(oop mh, oop lform); 1029 1030 // Testers 1031 static bool is_subclass(Klass* klass) { 1032 return klass->is_subclass_of(vmClasses::MethodHandle_klass()); 1033 } 1034 static bool is_instance(oop obj); 1035 1036 // Accessors for code generation: 1037 static int type_offset() { CHECK_INIT(_type_offset); } 1038 static int form_offset() { CHECK_INIT(_form_offset); } 1039 }; 1040 1041 // Interface to java.lang.invoke.DirectMethodHandle objects 1042 1043 class java_lang_invoke_DirectMethodHandle: AllStatic { 1044 friend class JavaClasses; 1045 1046 private: 1047 static int _member_offset; // the MemberName of this DMH 1048 1049 static void compute_offsets(); 1050 1051 public: 1052 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1053 1054 // Accessors 1055 static oop member(oop mh); 1056 1057 // Testers 1058 static bool is_subclass(Klass* klass) { 1059 return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass()); 1060 } 1061 static bool is_instance(oop obj); 1062 1063 // Accessors for code generation: 1064 static int member_offset() { CHECK_INIT(_member_offset); } 1065 }; 1066 1067 // Interface to java.lang.invoke.LambdaForm objects 1068 // (These are a private interface for managing adapter code generation.) 1069 1070 class java_lang_invoke_LambdaForm: AllStatic { 1071 friend class JavaClasses; 1072 1073 private: 1074 static int _vmentry_offset; // type is MemberName 1075 1076 static void compute_offsets(); 1077 1078 public: 1079 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1080 1081 // Accessors 1082 static oop vmentry(oop lform); 1083 1084 // Testers 1085 static bool is_subclass(Klass* klass) { 1086 return vmClasses::LambdaForm_klass() != nullptr && 1087 klass->is_subclass_of(vmClasses::LambdaForm_klass()); 1088 } 1089 static bool is_instance(oop obj); 1090 1091 // Accessors for code generation: 1092 static int vmentry_offset() { CHECK_INIT(_vmentry_offset); } 1093 }; 1094 1095 // Interface to java.lang.invoke.NativeEntryPoint objects 1096 // (These are a private interface for managing adapter code generation.) 1097 1098 class jdk_internal_foreign_abi_NativeEntryPoint: AllStatic { 1099 friend class JavaClasses; 1100 1101 private: 1102 static int _method_type_offset; 1103 static int _downcall_stub_address_offset; 1104 1105 static void compute_offsets(); 1106 1107 public: 1108 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1109 1110 // Accessors 1111 static oop method_type(oop entry); 1112 static jlong downcall_stub_address(oop entry); 1113 1114 // Testers 1115 static bool is_subclass(Klass* klass) { 1116 return vmClasses::NativeEntryPoint_klass() != nullptr && 1117 klass->is_subclass_of(vmClasses::NativeEntryPoint_klass()); 1118 } 1119 static bool is_instance(oop obj); 1120 1121 // Accessors for code generation: 1122 static int method_type_offset_in_bytes() { return _method_type_offset; } 1123 static int downcall_stub_address_offset_in_bytes() { return _downcall_stub_address_offset; } 1124 }; 1125 1126 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic { 1127 friend class JavaClasses; 1128 1129 private: 1130 static int _inputStorage_offset; 1131 static int _outputStorage_offset; 1132 static int _volatileStorage_offset; 1133 static int _stackAlignment_offset; 1134 static int _shadowSpace_offset; 1135 static int _scratch1_offset; 1136 static int _scratch2_offset; 1137 1138 static void compute_offsets(); 1139 1140 public: 1141 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1142 1143 // Accessors 1144 static objArrayOop inputStorage(oop entry); 1145 static objArrayOop outputStorage(oop entry); 1146 static objArrayOop volatileStorage(oop entry); 1147 static jint stackAlignment(oop entry); 1148 static jint shadowSpace(oop entry); 1149 static oop scratch1(oop entry); 1150 static oop scratch2(oop entry); 1151 1152 // Testers 1153 static bool is_subclass(Klass* klass) { 1154 return vmClasses::ABIDescriptor_klass() != nullptr && 1155 klass->is_subclass_of(vmClasses::ABIDescriptor_klass()); 1156 } 1157 static bool is_instance(oop obj); 1158 }; 1159 1160 class jdk_internal_foreign_abi_VMStorage: AllStatic { 1161 friend class JavaClasses; 1162 1163 private: 1164 static int _type_offset; 1165 static int _indexOrOffset_offset; 1166 static int _segmentMaskOrSize_offset; 1167 static int _debugName_offset; 1168 1169 static void compute_offsets(); 1170 1171 public: 1172 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1173 1174 // Accessors 1175 static jbyte type(oop entry); 1176 static jint index_or_offset(oop entry); 1177 static jshort segment_mask_or_size(oop entry); 1178 static oop debugName(oop entry); 1179 1180 // Testers 1181 static bool is_subclass(Klass* klass) { 1182 return vmClasses::VMStorage_klass() != nullptr && 1183 klass->is_subclass_of(vmClasses::VMStorage_klass()); 1184 } 1185 static bool is_instance(oop obj); 1186 }; 1187 1188 class jdk_internal_foreign_abi_CallConv: AllStatic { 1189 friend class JavaClasses; 1190 1191 private: 1192 static int _argRegs_offset; 1193 static int _retRegs_offset; 1194 1195 static void compute_offsets(); 1196 1197 public: 1198 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1199 1200 // Accessors 1201 static objArrayOop argRegs(oop entry); 1202 static objArrayOop retRegs(oop entry); 1203 1204 // Testers 1205 static bool is_subclass(Klass* klass) { 1206 return vmClasses::CallConv_klass() != nullptr && 1207 klass->is_subclass_of(vmClasses::CallConv_klass()); 1208 } 1209 static bool is_instance(oop obj); 1210 }; 1211 1212 // Interface to java.lang.invoke.MemberName objects 1213 // (These are a private interface for Java code to query the class hierarchy.) 1214 1215 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \ 1216 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false) 1217 1218 class java_lang_invoke_ResolvedMethodName : AllStatic { 1219 friend class JavaClasses; 1220 1221 static int _vmtarget_offset; 1222 static int _vmholder_offset; 1223 1224 static void compute_offsets(); 1225 public: 1226 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1227 1228 static int vmtarget_offset() { CHECK_INIT(_vmtarget_offset); } 1229 1230 static Method* vmtarget(oop resolved_method); 1231 static void set_vmtarget(oop resolved_method, Method* method); 1232 1233 static void set_vmholder(oop resolved_method, oop holder); 1234 1235 // find or create resolved member name 1236 static oop find_resolved_method(const methodHandle& m, TRAPS); 1237 1238 static bool is_instance(oop resolved_method); 1239 }; 1240 1241 1242 #define MEMBERNAME_INJECTED_FIELDS(macro) \ 1243 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) 1244 1245 1246 class java_lang_invoke_MemberName: AllStatic { 1247 friend class JavaClasses; 1248 1249 private: 1250 // From java.lang.invoke.MemberName: 1251 // private Class<?> clazz; // class in which the method is defined 1252 // private String name; // may be null if not yet materialized 1253 // private Object type; // may be null if not yet materialized 1254 // private int flags; // modifier bits; see reflect.Modifier 1255 // private ResolvedMethodName method; // holds VM-specific target value 1256 // private intptr_t vmindex; // member index within class or interface 1257 static int _clazz_offset; 1258 static int _name_offset; 1259 static int _type_offset; 1260 static int _flags_offset; 1261 static int _method_offset; 1262 static int _vmindex_offset; 1263 1264 static void compute_offsets(); 1265 1266 public: 1267 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1268 // Accessors 1269 static oop clazz(oop mname); 1270 static void set_clazz(oop mname, oop clazz); 1271 1272 static oop type(oop mname); 1273 static void set_type(oop mname, oop type); 1274 1275 static oop name(oop mname); 1276 static void set_name(oop mname, oop name); 1277 1278 static int flags(oop mname); 1279 static void set_flags(oop mname, int flags); 1280 1281 // Link through ResolvedMethodName field to get Method* 1282 static Method* vmtarget(oop mname); 1283 static void set_method(oop mname, oop method); 1284 1285 static intptr_t vmindex(oop mname); 1286 static void set_vmindex(oop mname, intptr_t index); 1287 1288 // Testers 1289 static bool is_subclass(Klass* klass) { 1290 return klass->is_subclass_of(vmClasses::MemberName_klass()); 1291 } 1292 static bool is_instance(oop obj); 1293 1294 static bool is_method(oop obj); 1295 1296 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): 1297 enum { 1298 MN_IS_METHOD = 0x00010000, // method (not constructor) 1299 MN_IS_CONSTRUCTOR = 0x00020000, // constructor 1300 MN_IS_FIELD = 0x00040000, // field 1301 MN_IS_TYPE = 0x00080000, // nested type 1302 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected 1303 MN_TRUSTED_FINAL = 0x00200000, // trusted final field 1304 MN_HIDDEN_MEMBER = 0x00400000, // @Hidden annotation detected 1305 MN_REFERENCE_KIND_SHIFT = 24, // refKind 1306 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, 1307 MN_NESTMATE_CLASS = 0x00000001, 1308 MN_HIDDEN_CLASS = 0x00000002, 1309 MN_STRONG_LOADER_LINK = 0x00000004, 1310 MN_ACCESS_VM_ANNOTATIONS = 0x00000008, 1311 // Lookup modes 1312 MN_MODULE_MODE = 0x00000010, 1313 MN_UNCONDITIONAL_MODE = 0x00000020, 1314 MN_TRUSTED_MODE = -1 1315 }; 1316 1317 // Accessors for code generation: 1318 static int clazz_offset() { CHECK_INIT(_clazz_offset); } 1319 static int type_offset() { CHECK_INIT(_type_offset); } 1320 static int flags_offset() { CHECK_INIT(_flags_offset); } 1321 static int method_offset() { CHECK_INIT(_method_offset); } 1322 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); } 1323 }; 1324 1325 1326 // Interface to java.lang.invoke.MethodType objects 1327 1328 class java_lang_invoke_MethodType: AllStatic { 1329 friend class JavaClasses; 1330 1331 private: 1332 static int _rtype_offset; 1333 static int _ptypes_offset; 1334 1335 static void compute_offsets(); 1336 1337 public: 1338 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1339 // Accessors 1340 static oop rtype(oop mt); 1341 static objArrayOop ptypes(oop mt); 1342 1343 static oop ptype(oop mt, int index); 1344 static int ptype_count(oop mt); 1345 1346 static int ptype_slot_count(oop mt); // extra counts for long/double 1347 static int rtype_slot_count(oop mt); // extra counts for long/double 1348 1349 static Symbol* as_signature(oop mt, bool intern_if_not_found); 1350 static void print_signature(oop mt, outputStream* st); 1351 1352 static bool is_instance(oop obj); 1353 1354 static bool equals(oop mt1, oop mt2); 1355 1356 // Accessors for code generation: 1357 static int rtype_offset() { CHECK_INIT(_rtype_offset); } 1358 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); } 1359 }; 1360 1361 1362 // Interface to java.lang.invoke.CallSite objects 1363 1364 class java_lang_invoke_CallSite: AllStatic { 1365 friend class JavaClasses; 1366 1367 private: 1368 static int _target_offset; 1369 static int _context_offset; 1370 1371 static void compute_offsets(); 1372 1373 public: 1374 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1375 // Accessors 1376 static oop target( oop site); 1377 static void set_target( oop site, oop target); 1378 static void set_target_volatile( oop site, oop target); 1379 1380 static oop context_no_keepalive(oop site); 1381 1382 // Testers 1383 static bool is_subclass(Klass* klass) { 1384 return klass->is_subclass_of(vmClasses::CallSite_klass()); 1385 } 1386 static bool is_instance(oop obj); 1387 1388 // Accessors for code generation: 1389 static int target_offset() { CHECK_INIT(_target_offset); } 1390 static int context_offset() { CHECK_INIT(_context_offset); } 1391 }; 1392 1393 // Interface to java.lang.invoke.ConstantCallSite objects 1394 1395 class java_lang_invoke_ConstantCallSite: AllStatic { 1396 friend class JavaClasses; 1397 1398 private: 1399 static int _is_frozen_offset; 1400 1401 static void compute_offsets(); 1402 1403 public: 1404 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1405 // Accessors 1406 static jboolean is_frozen(oop site); 1407 1408 // Testers 1409 static bool is_subclass(Klass* klass) { 1410 return klass->is_subclass_of(vmClasses::ConstantCallSite_klass()); 1411 } 1412 static bool is_instance(oop obj); 1413 }; 1414 1415 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects 1416 1417 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \ 1418 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \ 1419 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false) 1420 1421 class DependencyContext; 1422 1423 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic { 1424 friend class JavaClasses; 1425 1426 private: 1427 static int _vmdependencies_offset; 1428 static int _last_cleanup_offset; 1429 1430 static void compute_offsets(); 1431 1432 public: 1433 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1434 // Accessors 1435 static DependencyContext vmdependencies(oop context); 1436 1437 // Testers 1438 static bool is_subclass(Klass* klass) { 1439 return klass->is_subclass_of(vmClasses::Context_klass()); 1440 } 1441 static bool is_instance(oop obj); 1442 }; 1443 1444 // Interface to java.security.AccessControlContext objects 1445 1446 class java_security_AccessControlContext: AllStatic { 1447 private: 1448 // Note that for this class the layout changed between JDK1.2 and JDK1.3, 1449 // so we compute the offsets at startup rather than hard-wiring them. 1450 static int _context_offset; 1451 static int _privilegedContext_offset; 1452 static int _isPrivileged_offset; 1453 static int _isAuthorized_offset; 1454 1455 static void compute_offsets(); 1456 public: 1457 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1458 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); 1459 1460 // Debugging/initialization 1461 friend class JavaClasses; 1462 }; 1463 1464 1465 // Interface to java.lang.ClassLoader objects 1466 1467 #define CLASSLOADER_INJECTED_FIELDS(macro) \ 1468 macro(java_lang_ClassLoader, loader_data, intptr_signature, false) 1469 1470 class java_lang_ClassLoader : AllStatic { 1471 private: 1472 static int _loader_data_offset; 1473 static int _parent_offset; 1474 static int _parallelCapable_offset; 1475 static int _name_offset; 1476 static int _nameAndId_offset; 1477 static int _unnamedModule_offset; 1478 1479 static void compute_offsets(); 1480 1481 public: 1482 // Support for CDS 1483 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1484 static int loader_data_offset() { return _loader_data_offset; } 1485 1486 static ClassLoaderData* loader_data_acquire(oop loader); 1487 static ClassLoaderData* loader_data(oop loader); 1488 static void release_set_loader_data(oop loader, ClassLoaderData* new_data); 1489 1490 static oop parent(oop loader); 1491 static oop parent_no_keepalive(oop loader); 1492 static oop name(oop loader); 1493 static oop nameAndId(oop loader); 1494 static bool isAncestor(oop loader, oop cl); 1495 1496 // Support for parallelCapable field 1497 static bool parallelCapable(oop the_class_mirror); 1498 1499 static bool is_trusted_loader(oop loader); 1500 1501 // Return true if this is one of the class loaders associated with 1502 // the generated bytecodes for serialization constructor returned 1503 // by sun.reflect.ReflectionFactory::newConstructorForSerialization 1504 static bool is_reflection_class_loader(oop loader); 1505 1506 // Fix for 4474172 1507 static oop non_reflection_class_loader(oop loader); 1508 1509 // Testers 1510 static bool is_subclass(Klass* klass) { 1511 return klass->is_subclass_of(vmClasses::ClassLoader_klass()); 1512 } 1513 static bool is_instance(oop obj); 1514 1515 static oop unnamedModule(oop loader); 1516 1517 // Debugging 1518 friend class JavaClasses; 1519 }; 1520 1521 1522 // Interface to java.lang.System objects 1523 1524 class java_lang_System : AllStatic { 1525 private: 1526 static int _static_in_offset; 1527 static int _static_out_offset; 1528 static int _static_err_offset; 1529 static int _static_security_offset; 1530 static int _static_allow_security_offset; 1531 static int _static_never_offset; 1532 1533 public: 1534 static int in_offset() { CHECK_INIT(_static_in_offset); } 1535 static int out_offset() { CHECK_INIT(_static_out_offset); } 1536 static int err_offset() { CHECK_INIT(_static_err_offset); } 1537 static bool allow_security_manager(); 1538 static bool has_security_manager(); 1539 1540 static void compute_offsets(); 1541 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1542 1543 // Debugging 1544 friend class JavaClasses; 1545 }; 1546 1547 1548 // Interface to java.lang.StackTraceElement objects 1549 1550 class java_lang_StackTraceElement: AllStatic { 1551 private: 1552 static int _declaringClassObject_offset; 1553 static int _classLoaderName_offset; 1554 static int _moduleName_offset; 1555 static int _moduleVersion_offset; 1556 static int _declaringClass_offset; 1557 static int _methodName_offset; 1558 static int _fileName_offset; 1559 static int _lineNumber_offset; 1560 1561 // Setters 1562 static void set_classLoaderName(oop element, oop value); 1563 static void set_moduleName(oop element, oop value); 1564 static void set_moduleVersion(oop element, oop value); 1565 static void set_declaringClass(oop element, oop value); 1566 static void set_methodName(oop element, oop value); 1567 static void set_fileName(oop element, oop value); 1568 static void set_lineNumber(oop element, int value); 1569 static void set_declaringClassObject(oop element, oop value); 1570 1571 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version, 1572 const methodHandle& method, int bci, 1573 Symbol*& source, oop& source_file, int& line_number, TRAPS); 1574 1575 public: 1576 // Create an instance of StackTraceElement 1577 static oop create(const methodHandle& method, int bci, TRAPS); 1578 1579 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method, 1580 int version, int bci, Symbol* name, TRAPS); 1581 1582 static void compute_offsets(); 1583 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1584 1585 #if INCLUDE_JVMCI 1586 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS); 1587 #endif 1588 1589 // Debugging 1590 friend class JavaClasses; 1591 }; 1592 1593 1594 class Backtrace: AllStatic { 1595 public: 1596 // Helper backtrace functions to store bci|version together. 1597 static int merge_bci_and_version(int bci, int version); 1598 static int merge_mid_and_cpref(int mid, int cpref); 1599 static int bci_at(unsigned int merged); 1600 static int version_at(unsigned int merged); 1601 static int mid_at(unsigned int merged); 1602 static int cpref_at(unsigned int merged); 1603 static int get_line_number(Method* method, int bci); 1604 static Symbol* get_source_file_name(InstanceKlass* holder, int version); 1605 1606 // Debugging 1607 friend class JavaClasses; 1608 }; 1609 1610 class java_lang_ClassFrameInfo: AllStatic { 1611 private: 1612 static int _classOrMemberName_offset; 1613 static int _flags_offset; 1614 1615 public: 1616 static oop classOrMemberName(oop info); 1617 static int flags(oop info); 1618 1619 // Setters 1620 static void init_class(Handle stackFrame, const methodHandle& m); 1621 static void init_method(Handle stackFrame, const methodHandle& m, TRAPS); 1622 1623 static void compute_offsets(); 1624 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1625 1626 // Debugging 1627 friend class JavaClasses; 1628 }; 1629 1630 // Interface to java.lang.StackFrameInfo objects 1631 1632 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \ 1633 macro(java_lang_StackFrameInfo, version, short_signature, false) 1634 1635 class java_lang_StackFrameInfo: AllStatic { 1636 private: 1637 static int _type_offset; 1638 static int _name_offset; 1639 static int _bci_offset; 1640 static int _version_offset; 1641 static int _contScope_offset; 1642 1643 public: 1644 // Getters 1645 static oop name(oop info); 1646 static oop type(oop info); 1647 static Method* get_method(oop info); 1648 1649 // Setters 1650 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS); 1651 static void set_name(oop info, oop value); 1652 static void set_type(oop info, oop value); 1653 static void set_bci(oop info, int value); 1654 1655 static void set_version(oop info, short value); 1656 static void set_contScope(oop info, oop value); 1657 1658 static void compute_offsets(); 1659 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1660 1661 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS); 1662 1663 // Debugging 1664 friend class JavaClasses; 1665 }; 1666 1667 class java_lang_LiveStackFrameInfo: AllStatic { 1668 private: 1669 static int _monitors_offset; 1670 static int _locals_offset; 1671 static int _operands_offset; 1672 static int _mode_offset; 1673 1674 public: 1675 static void set_monitors(oop info, oop value); 1676 static void set_locals(oop info, oop value); 1677 static void set_operands(oop info, oop value); 1678 static void set_mode(oop info, int value); 1679 1680 static void compute_offsets(); 1681 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1682 1683 // Debugging 1684 friend class JavaClasses; 1685 }; 1686 1687 // Interface to java.lang.reflect.RecordComponent objects 1688 1689 class java_lang_reflect_RecordComponent: AllStatic { 1690 private: 1691 static int _clazz_offset; 1692 static int _name_offset; 1693 static int _type_offset; 1694 static int _accessor_offset; 1695 static int _signature_offset; 1696 static int _annotations_offset; 1697 static int _typeAnnotations_offset; 1698 1699 // Setters 1700 static void set_clazz(oop element, oop value); 1701 static void set_name(oop element, oop value); 1702 static void set_type(oop element, oop value); 1703 static void set_accessor(oop element, oop value); 1704 static void set_signature(oop element, oop value); 1705 static void set_annotations(oop element, oop value); 1706 static void set_typeAnnotations(oop element, oop value); 1707 1708 public: 1709 // Create an instance of RecordComponent 1710 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS); 1711 1712 static void compute_offsets(); 1713 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1714 1715 // Debugging 1716 friend class JavaClasses; 1717 }; 1718 1719 1720 // Interface to java.lang.AssertionStatusDirectives objects 1721 1722 class java_lang_AssertionStatusDirectives: AllStatic { 1723 private: 1724 static int _classes_offset; 1725 static int _classEnabled_offset; 1726 static int _packages_offset; 1727 static int _packageEnabled_offset; 1728 static int _deflt_offset; 1729 1730 public: 1731 // Setters 1732 static void set_classes(oop obj, oop val); 1733 static void set_classEnabled(oop obj, oop val); 1734 static void set_packages(oop obj, oop val); 1735 static void set_packageEnabled(oop obj, oop val); 1736 static void set_deflt(oop obj, bool val); 1737 1738 static void compute_offsets(); 1739 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1740 1741 // Debugging 1742 friend class JavaClasses; 1743 }; 1744 1745 1746 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { 1747 private: 1748 static int _owner_offset; 1749 public: 1750 static void compute_offsets(); 1751 static oop get_owner_threadObj(oop obj); 1752 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1753 }; 1754 1755 // Interface to jdk.internal.misc.UnsafeConsants 1756 1757 class jdk_internal_misc_UnsafeConstants : AllStatic { 1758 public: 1759 static void set_unsafe_constants(); 1760 static void compute_offsets() { } 1761 static void serialize_offsets(SerializeClosure* f) { } 1762 }; 1763 1764 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects 1765 1766 class vector_VectorPayload : AllStatic { 1767 private: 1768 static int _payload_offset; 1769 public: 1770 static void set_payload(oop o, oop val); 1771 1772 static void compute_offsets(); 1773 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1774 1775 // Testers 1776 static bool is_subclass(Klass* klass) { 1777 return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass()); 1778 } 1779 static bool is_instance(oop obj); 1780 }; 1781 1782 class java_lang_Integer : AllStatic { 1783 public: 1784 static jint value(oop obj); 1785 }; 1786 1787 class java_lang_Long : AllStatic { 1788 public: 1789 static jlong value(oop obj); 1790 }; 1791 1792 class java_lang_Character : AllStatic { 1793 public: 1794 static jchar value(oop obj); 1795 }; 1796 1797 class java_lang_Short : AllStatic { 1798 public: 1799 static jshort value(oop obj); 1800 }; 1801 1802 class java_lang_Byte : AllStatic { 1803 public: 1804 static jbyte value(oop obj); 1805 }; 1806 1807 class java_lang_Boolean : AllStatic { 1808 private: 1809 static int _static_TRUE_offset; 1810 static int _static_FALSE_offset; 1811 public: 1812 static Symbol* symbol(); 1813 static void compute_offsets(InstanceKlass* k); 1814 static oop get_TRUE(InstanceKlass *k); 1815 static oop get_FALSE(InstanceKlass *k); 1816 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1817 static jboolean value(oop obj); 1818 }; 1819 1820 class java_lang_Integer_IntegerCache : AllStatic { 1821 private: 1822 static int _static_cache_offset; 1823 public: 1824 static Symbol* symbol(); 1825 static void compute_offsets(InstanceKlass* k); 1826 static objArrayOop cache(InstanceKlass *k); 1827 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1828 }; 1829 1830 class java_lang_Long_LongCache : AllStatic { 1831 private: 1832 static int _static_cache_offset; 1833 public: 1834 static Symbol* symbol(); 1835 static void compute_offsets(InstanceKlass* k); 1836 static objArrayOop cache(InstanceKlass *k); 1837 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1838 }; 1839 1840 class java_lang_Character_CharacterCache : AllStatic { 1841 private: 1842 static int _static_cache_offset; 1843 public: 1844 static Symbol* symbol(); 1845 static void compute_offsets(InstanceKlass* k); 1846 static objArrayOop cache(InstanceKlass *k); 1847 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1848 }; 1849 1850 class java_lang_Short_ShortCache : AllStatic { 1851 private: 1852 static int _static_cache_offset; 1853 public: 1854 static Symbol* symbol(); 1855 static void compute_offsets(InstanceKlass* k); 1856 static objArrayOop cache(InstanceKlass *k); 1857 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1858 }; 1859 1860 class java_lang_Byte_ByteCache : AllStatic { 1861 private: 1862 static int _static_cache_offset; 1863 public: 1864 static Symbol* symbol(); 1865 static void compute_offsets(InstanceKlass* k); 1866 static objArrayOop cache(InstanceKlass *k); 1867 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1868 }; 1869 1870 1871 // Interface to java.lang.InternalError objects 1872 1873 #define INTERNALERROR_INJECTED_FIELDS(macro) \ 1874 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false) 1875 1876 class java_lang_InternalError : AllStatic { 1877 private: 1878 static int _during_unsafe_access_offset; 1879 public: 1880 static jboolean during_unsafe_access(oop internal_error); 1881 static void set_during_unsafe_access(oop internal_error); 1882 static void compute_offsets(); 1883 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1884 }; 1885 1886 // Use to declare fields that need to be injected into Java classes 1887 // for the JVM to use. The name_index and signature_index are 1888 // declared in vmSymbols. The may_be_java flag is used to declare 1889 // fields that might already exist in Java but should be injected if 1890 // they don't. Otherwise the field is unconditionally injected and 1891 // the JVM uses the injected one. This is to ensure that name 1892 // collisions don't occur. In general may_be_java should be false 1893 // unless there's a good reason. 1894 1895 class InjectedField { 1896 public: 1897 const vmClassID klass_id; 1898 const vmSymbolID name_index; 1899 const vmSymbolID signature_index; 1900 const bool may_be_java; 1901 1902 1903 Klass* klass() const { return vmClasses::klass_at(klass_id); } 1904 Symbol* name() const { return lookup_symbol(name_index); } 1905 Symbol* signature() const { return lookup_symbol(signature_index); } 1906 1907 int compute_offset(); 1908 1909 // Find the Symbol for this index 1910 static Symbol* lookup_symbol(vmSymbolID symbol_index) { 1911 return Symbol::vm_symbol_at(symbol_index); 1912 } 1913 }; 1914 1915 1916 // Interface to hard-coded offset checking 1917 1918 enum class InjectedFieldID : int; 1919 1920 class JavaClasses : AllStatic { 1921 private: 1922 1923 static InjectedField _injected_fields[]; 1924 1925 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; 1926 public: 1927 1928 static int compute_injected_offset(InjectedFieldID id); 1929 1930 static void compute_offsets(); 1931 static void check_offsets() PRODUCT_RETURN; 1932 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN; 1933 static InjectedField* get_injected(Symbol* class_name, int* field_count); 1934 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false); 1935 1936 static void compute_offset(int &dest_offset, 1937 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol, 1938 bool is_static = false); 1939 static void compute_offset(int& dest_offset, InstanceKlass* ik, 1940 const char* name_string, Symbol* signature_symbol, 1941 bool is_static = false); 1942 }; 1943 1944 #undef CHECK_INIT 1945 1946 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP