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/utf8.hpp"
  36 #include "utilities/vmEnums.hpp"
  37 
  38 class JvmtiThreadState;
  39 class RecordComponent;
  40 class SerializeClosure;
  41 class ObjectWaiter;
  42 class ObjectMonitor;
  43 
  44 #define CHECK_INIT(offset)  assert(offset != 0, "should be initialized"); return offset;
  45 
  46 // Interface to java.lang.Object objects
  47 
  48 class java_lang_Object : AllStatic {
  49  public:
  50   static void register_natives(TRAPS);
  51 };
  52 
  53 // Interface to java.lang.String objects
  54 
  55 // The flags field is a collection of bits representing boolean values used
  56 // internally by the VM.
  57 #define STRING_INJECTED_FIELDS(macro) \
  58   macro(java_lang_String, flags, byte_signature, false)
  59 
  60 class java_lang_String : AllStatic {
  61  private:
  62   static int _value_offset;
  63   static int _hash_offset;
  64   static int _hashIsZero_offset;
  65   static int _coder_offset;
  66   static int _flags_offset;
  67 
  68   static bool _initialized;
  69 
  70   static Handle basic_create(int length, bool byte_arr, TRAPS);
  71 
  72   static inline void set_coder(oop string, jbyte coder);
  73 
  74   // Bitmasks for values in the injected flags field.
  75   static const uint8_t _deduplication_forbidden_mask = 1 << 0;
  76   static const uint8_t _deduplication_requested_mask = 1 << 1;
  77 
  78   static int flags_offset() { CHECK_INIT(_flags_offset); }
  79   // Return the address of the injected flags field.
  80   static inline uint8_t* flags_addr(oop java_string);
  81   // Test whether the designated bit of the injected flags field is set.
  82   static inline bool is_flag_set(oop java_string, uint8_t flag_mask);
  83   // Atomically test and set the designated bit of the injected flags field,
  84   // returning true if the bit was already set.
  85   static bool test_and_set_flag(oop java_string, uint8_t flag_mask);
  86 
  87   static inline unsigned int hash_code_impl(oop java_string, bool update);
  88 
  89  public:
  90 
  91   // Coders
  92   enum Coder {
  93     CODER_LATIN1 =  0,
  94     CODER_UTF16  =  1
  95   };
  96 
  97   static void compute_offsets();
  98   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
  99 
 100   // Instance creation
 101   static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
 102   static oop    create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
 103   static Handle create_from_str(const char* utf8_str, TRAPS);
 104   static oop    create_oop_from_str(const char* utf8_str, TRAPS);
 105   static Handle create_from_symbol(const Symbol* symbol, TRAPS);
 106   static Handle create_from_platform_dependent_str(const char* str, TRAPS);
 107 
 108   static void set_compact_strings(bool value);
 109 
 110   static int value_offset() { CHECK_INIT(_value_offset); }
 111   static int coder_offset() { CHECK_INIT(_coder_offset); }
 112 
 113   static inline void set_value(oop string, typeArrayOop buffer);
 114 
 115   // Set the deduplication_forbidden flag true.  This flag is sticky; once
 116   // set it never gets cleared.  This is set when a String is interned in
 117   // the StringTable, to prevent string deduplication from changing the
 118   // String's value array.
 119   static inline void set_deduplication_forbidden(oop java_string);
 120 
 121   // Test and set the deduplication_requested flag.  Returns the old value
 122   // of the flag.  This flag is sticky; once set it never gets cleared.
 123   // Some GCs may use this flag when deciding whether to request
 124   // deduplication of a String, to avoid multiple requests for the same
 125   // object.
 126   static inline bool test_and_set_deduplication_requested(oop java_string);
 127 
 128   // Accessors
 129   static inline typeArrayOop value(oop java_string);
 130   static inline typeArrayOop value_no_keepalive(oop java_string);
 131   static inline bool hash_is_set(oop string);
 132   static inline bool is_latin1(oop java_string);
 133   static inline bool deduplication_forbidden(oop java_string);
 134   static inline bool deduplication_requested(oop java_string);
 135   static inline int length(oop java_string);
 136   static inline int length(oop java_string, typeArrayOop string_value);
 137   static size_t utf8_length(oop java_string);
 138   static size_t utf8_length(oop java_string, typeArrayOop string_value);
 139   // Legacy variants that truncate the length if needed
 140   static int    utf8_length_as_int(oop java_string);
 141   static int    utf8_length_as_int(oop java_string, typeArrayOop string_value);
 142 
 143   // String converters
 144   static char*  as_utf8_string(oop java_string);
 145   // `length` is set to the length of the utf8 sequence.
 146   static char*  as_utf8_string(oop java_string, size_t& length);
 147   static char*  as_utf8_string_full(oop java_string, char* buf, size_t buflen, size_t& length);
 148   static char*  as_utf8_string(oop java_string, char* buf, size_t buflen);
 149   static char*  as_utf8_string(oop java_string, int start, int len);
 150   static char*  as_utf8_string(oop java_string, typeArrayOop value, char* buf, size_t buflen);
 151   static char*  as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, size_t buflen);
 152   static char*  as_platform_dependent_str(Handle java_string, TRAPS);
 153   static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
 154   static jchar* as_unicode_string_or_null(oop java_string, int& length);
 155   // produce an ascii string with all other values quoted using \u####
 156   static char*  as_quoted_ascii(oop java_string);
 157 
 158   // Compute the hash value for a java.lang.String object which would
 159   // contain the characters passed in.
 160   //
 161   // As the hash value used by the String object itself, in
 162   // String.hashCode().  This value is normally calculated in Java code
 163   // in the String.hashCode method(), but is precomputed for String
 164   // objects in the shared archive file.
 165   // hash P(31) from Kernighan & Ritchie
 166   //
 167   // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
 168   static unsigned int hash_code(const jchar* s, int len) {
 169     unsigned int h = 0;
 170     while (len-- > 0) {
 171       h = 31*h + (unsigned int) *s;
 172       s++;
 173     }
 174     return h;
 175   }
 176 
 177   static unsigned int hash_code(const jbyte* s, int len) {
 178     unsigned int h = 0;
 179     while (len-- > 0) {
 180       h = 31*h + (((unsigned int) *s) & 0xFF);
 181       s++;
 182     }
 183     return h;
 184   }
 185 
 186   static unsigned int hash_code(const char* utf8_str, size_t utf8_len) {
 187     unsigned int h = 0;
 188     int unicode_length = UTF8::unicode_length(utf8_str, utf8_len);
 189 
 190     jchar c;
 191     while (unicode_length-- > 0) {
 192       utf8_str = UTF8::next(utf8_str, &c);
 193       h = 31 * h + ((unsigned int)c);
 194     }
 195     return h;
 196   }
 197 
 198   static unsigned int hash_code(oop java_string);
 199   static unsigned int hash_code_noupdate(oop java_string);
 200 
 201   // Compare strings (of different types/encodings), length is the string (array) length
 202   static bool equals(oop java_string, const jchar* chars, int len);
 203   static bool equals(oop java_string, const char* utf8_str, size_t utf8_len);
 204   static bool equals(oop str1, oop str2);
 205   static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
 206 
 207   // Conversion between '.' and '/' formats, and allocate a String from the result.
 208   static Handle externalize_classname(Symbol* java_name, TRAPS);
 209 
 210   // Conversion
 211   static Symbol* as_symbol(oop java_string);
 212   static Symbol* as_symbol_or_null(oop java_string);
 213 
 214   // Tester
 215   static inline bool is_instance(oop obj);
 216 
 217   // Debugging
 218   static void print(oop java_string, outputStream* st, int max_length = MaxStringPrintSize);
 219   friend class JavaClasses;
 220   friend class StringTable;
 221 };
 222 
 223 
 224 // Interface to java.lang.Class objects
 225 
 226 #define CLASS_INJECTED_FIELDS(macro)                                       \
 227   macro(java_lang_Class, klass,                  intptr_signature,  false) \
 228   macro(java_lang_Class, array_klass,            intptr_signature,  false) \
 229   macro(java_lang_Class, oop_size,               int_signature,     false) \
 230   macro(java_lang_Class, static_oop_field_count, int_signature,     false) \
 231   macro(java_lang_Class, protection_domain,      object_signature,  false) \
 232   macro(java_lang_Class, source_file,            object_signature,  false) \
 233   macro(java_lang_Class, init_lock,              object_signature,  false)
 234 
 235 class java_lang_Class : AllStatic {
 236   friend class VMStructs;
 237   friend class JVMCIVMStructs;
 238 
 239  private:
 240 
 241   // The fake offsets are added by the class loader when java.lang.Class is loaded
 242 
 243   static int _klass_offset;
 244   static int _array_klass_offset;
 245 
 246   static int _oop_size_offset;
 247   static int _static_oop_field_count_offset;
 248 
 249   static int _protection_domain_offset;
 250   static int _init_lock_offset;
 251   static int _signers_offset;
 252   static int _class_loader_offset;
 253   static int _module_offset;
 254   static int _component_mirror_offset;
 255   static int _name_offset;
 256   static int _source_file_offset;
 257   static int _classData_offset;
 258   static int _classRedefinedCount_offset;
 259   static int _reflectionData_offset;
 260 
 261   static bool _offsets_computed;
 262 
 263   static GrowableArray<Klass*>* _fixup_mirror_list;
 264   static GrowableArray<Klass*>* _fixup_module_field_list;
 265 
 266   static void set_init_lock(oop java_class, oop init_lock);
 267   static void set_protection_domain(oop java_class, oop protection_domain);
 268   static void set_class_loader(oop java_class, oop class_loader);
 269   static void set_component_mirror(oop java_class, oop comp_mirror);
 270   static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
 271                                        Handle classData, TRAPS);
 272   static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
 273  public:
 274   static void allocate_fixup_lists();
 275   static void compute_offsets();
 276 
 277   // Instance creation
 278   static void allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
 279                               Handle& mirror, Handle& comp_mirror, TRAPS); // returns mirror and comp_mirror
 280   static void create_mirror(Klass* k, Handle class_loader, Handle module,
 281                             Handle protection_domain, Handle classData, TRAPS);
 282   static void fixup_mirror(Klass* k, TRAPS);
 283   static oop  create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
 284 
 285   // Archiving
 286   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 287   static void create_scratch_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
 288   static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
 289                                       Handle protection_domain,
 290                                       TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
 291 
 292   static void fixup_module_field(Klass* k, Handle module);
 293 
 294   // Conversion
 295   static Klass* as_Klass(oop java_class);
 296   static void set_klass(oop java_class, Klass* klass);
 297   static BasicType as_BasicType(oop java_class, Klass** reference_klass = nullptr);
 298   static Symbol* as_signature(oop java_class, bool intern_if_not_found);
 299   static void print_signature(oop java_class, outputStream *st);
 300   static const char* as_external_name(oop java_class);
 301   // Testing
 302   static bool is_instance(oop obj);
 303 
 304   static bool is_primitive(oop java_class);
 305   static BasicType primitive_type(oop java_class);
 306   static oop primitive_mirror(BasicType t);
 307   // JVM_NewArray support
 308   static Klass* array_klass_acquire(oop java_class);
 309   static void release_set_array_klass(oop java_class, Klass* klass);
 310   // compiler support for class operations
 311   static int klass_offset()                { CHECK_INIT(_klass_offset); }
 312   static int array_klass_offset()          { CHECK_INIT(_array_klass_offset); }
 313   // Support for classRedefinedCount field
 314   static int classRedefinedCount(oop the_class_mirror);
 315   static void set_classRedefinedCount(oop the_class_mirror, int value);
 316 
 317   // Support for embedded per-class oops
 318   static oop  protection_domain(oop java_class);
 319   static oop  init_lock(oop java_class);
 320   static void clear_init_lock(oop java_class) {
 321     set_init_lock(java_class, nullptr);
 322   }
 323   static oop  component_mirror(oop java_class);
 324   static objArrayOop signers(oop java_class);
 325   static oop  class_data(oop java_class);
 326   static void set_class_data(oop java_class, oop classData);
 327   static void set_reflection_data(oop java_class, oop reflection_data);
 328 
 329   static int component_mirror_offset() { return _component_mirror_offset; }
 330 
 331   static oop class_loader(oop java_class);
 332   static void set_module(oop java_class, oop module);
 333   static oop module(oop java_class);
 334 
 335   static oop name(Handle java_class, TRAPS);
 336 
 337   static oop source_file(oop java_class);
 338   static void set_source_file(oop java_class, oop source_file);
 339 
 340   static size_t oop_size(oop java_class);
 341   static void set_oop_size(HeapWord* java_class, size_t size);
 342   static int static_oop_field_count(oop java_class);
 343   static void set_static_oop_field_count(oop java_class, int size);
 344 
 345   static GrowableArray<Klass*>* fixup_mirror_list() {
 346     return _fixup_mirror_list;
 347   }
 348   static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
 349     _fixup_mirror_list = v;
 350   }
 351 
 352   static GrowableArray<Klass*>* fixup_module_field_list() {
 353     return _fixup_module_field_list;
 354   }
 355   static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
 356     _fixup_module_field_list = v;
 357   }
 358 
 359   // Debugging
 360   friend class JavaClasses;
 361 };
 362 
 363 // Interface to java.lang.Thread objects
 364 
 365 #define THREAD_INJECTED_FIELDS(macro)                                  \
 366   macro(java_lang_Thread, jvmti_thread_state, intptr_signature, false) \
 367   macro(java_lang_Thread, jvmti_VTMS_transition_disable_count, int_signature, false) \
 368   macro(java_lang_Thread, jvmti_is_in_VTMS_transition, bool_signature, false) \
 369   JFR_ONLY(macro(java_lang_Thread, jfr_epoch, short_signature, false))
 370 
 371 class java_lang_Thread : AllStatic {
 372   friend class java_lang_VirtualThread;
 373   friend class JVMCIVMStructs;
 374  private:
 375   // Note that for this class the layout changed between JDK1.2 and JDK1.3,
 376   // so we compute the offsets at startup rather than hard-wiring them.
 377   static int _holder_offset;
 378   static int _name_offset;
 379   static int _contextClassLoader_offset;
 380   static int _eetop_offset;
 381   static int _jvmti_thread_state_offset;
 382   static int _jvmti_VTMS_transition_disable_count_offset;
 383   static int _jvmti_is_in_VTMS_transition_offset;
 384   static int _interrupted_offset;
 385   static int _interruptLock_offset;
 386   static int _tid_offset;
 387   static int _continuation_offset;
 388   static int _park_blocker_offset;
 389   static int _scopedValueBindings_offset;
 390   JFR_ONLY(static int _jfr_epoch_offset;)
 391 
 392   static void compute_offsets();
 393 
 394  public:
 395   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 396 
 397   // Returns the JavaThread associated with the thread obj
 398   static JavaThread* thread(oop java_thread);
 399   static JavaThread* thread_acquire(oop java_thread);
 400   // Set JavaThread for instance
 401   static void set_thread(oop java_thread, JavaThread* thread);
 402   static void release_set_thread(oop java_thread, JavaThread* thread);
 403   // FieldHolder
 404   static oop holder(oop java_thread);
 405   // interruptLock
 406   static oop interrupt_lock(oop java_thread);
 407   // Interrupted status
 408   static bool interrupted(oop java_thread);
 409   static void set_interrupted(oop java_thread, bool val);
 410   // Name
 411   static oop name(oop java_thread);
 412   static void set_name(oop java_thread, oop name);
 413   // Priority
 414   static ThreadPriority priority(oop java_thread);
 415   static void set_priority(oop java_thread, ThreadPriority priority);
 416   // Thread group
 417   static oop  threadGroup(oop java_thread);
 418   // Alive (NOTE: this is not really a field, but provides the correct
 419   // definition without doing a Java call)
 420   static bool is_alive(oop java_thread);
 421   // Daemon
 422   static bool is_daemon(oop java_thread);
 423   static void set_daemon(oop java_thread);
 424   // Context ClassLoader
 425   static oop context_class_loader(oop java_thread);
 426   // Stack size hint
 427   static jlong stackSize(oop java_thread);
 428   // Thread ID
 429   static int64_t thread_id(oop java_thread);
 430   static ByteSize thread_id_offset();
 431   // Continuation
 432   static inline oop continuation(oop java_thread);
 433 
 434   static JvmtiThreadState* jvmti_thread_state(oop java_thread);
 435   static void set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state);
 436   static int  VTMS_transition_disable_count(oop java_thread);
 437   static void inc_VTMS_transition_disable_count(oop java_thread);
 438   static void dec_VTMS_transition_disable_count(oop java_thread);
 439   static bool is_in_VTMS_transition(oop java_thread);
 440   static void set_is_in_VTMS_transition(oop java_thread, bool val);
 441   static int  is_in_VTMS_transition_offset();
 442 
 443   // Clear all scoped value bindings on error
 444   static void clear_scopedValueBindings(oop java_thread);
 445 
 446   // Blocker object responsible for thread parking
 447   static oop park_blocker(oop java_thread);
 448 
 449   // Write thread status info to threadStatus field of java.lang.Thread.
 450   static void set_thread_status(oop java_thread_oop, JavaThreadStatus status);
 451   // Read thread status info from threadStatus field of java.lang.Thread.
 452   static JavaThreadStatus get_thread_status(oop java_thread_oop);
 453 
 454   static const char*  thread_status_name(oop java_thread_oop);
 455 
 456   // Fill in current stack trace, can cause GC
 457   static oop async_get_stack_trace(oop java_thread, TRAPS);
 458 
 459   JFR_ONLY(static u2 jfr_epoch(oop java_thread);)
 460   JFR_ONLY(static void set_jfr_epoch(oop java_thread, u2 epoch);)
 461   JFR_ONLY(static int jfr_epoch_offset() { CHECK_INIT(_jfr_epoch_offset); })
 462 
 463   // Debugging
 464   friend class JavaClasses;
 465 };
 466 
 467 // Interface to java.lang.Thread$FieldHolder objects
 468 
 469 class java_lang_Thread_FieldHolder : AllStatic {
 470  private:
 471   static int _group_offset;
 472   static int _priority_offset;
 473   static int _stackSize_offset;
 474   static int _daemon_offset;
 475   static int _thread_status_offset;
 476 
 477   static void compute_offsets();
 478 
 479  public:
 480   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 481 
 482   static oop threadGroup(oop holder);
 483 
 484   static ThreadPriority priority(oop holder);
 485   static void set_priority(oop holder, ThreadPriority priority);
 486 
 487   static jlong stackSize(oop holder);
 488 
 489   static bool is_daemon(oop holder);
 490   static void set_daemon(oop holder, bool val);
 491 
 492   static void set_thread_status(oop holder, JavaThreadStatus status);
 493   static JavaThreadStatus get_thread_status(oop holder);
 494 
 495   friend class JavaClasses;
 496 };
 497 
 498 // Interface to java.lang.Thread$Constants objects
 499 
 500 class java_lang_Thread_Constants : AllStatic {
 501  private:
 502   static int _static_VTHREAD_GROUP_offset;
 503   static int _static_NOT_SUPPORTED_CLASSLOADER_offset;
 504 
 505   static void compute_offsets();
 506   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 507 
 508  public:
 509   static oop get_VTHREAD_GROUP();
 510 
 511   friend class JavaClasses;
 512 };
 513 
 514 // Interface to java.lang.ThreadGroup objects
 515 
 516 class java_lang_ThreadGroup : AllStatic {
 517  private:
 518   static int _parent_offset;
 519   static int _name_offset;
 520   static int _maxPriority_offset;
 521   static int _daemon_offset;
 522 
 523   static void compute_offsets();
 524  public:
 525   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 526 
 527   // parent ThreadGroup
 528   static oop parent(oop java_thread_group);
 529   // name
 530   static const char* name(oop java_thread_group);
 531   // maxPriority in group
 532   static ThreadPriority maxPriority(oop java_thread_group);
 533   // Daemon
 534   static bool is_daemon(oop java_thread_group);
 535 
 536   // Debugging
 537   friend class JavaClasses;
 538 };
 539 
 540 
 541 // Interface to java.lang.VirtualThread objects
 542 #define VTHREAD_INJECTED_FIELDS(macro)                                           \
 543   macro(java_lang_VirtualThread,   objectWaiter,  intptr_signature,       false)
 544 
 545 class java_lang_VirtualThread : AllStatic {
 546  private:
 547   static int static_vthread_scope_offset;
 548   static int _carrierThread_offset;
 549   static int _continuation_offset;
 550   static int _state_offset;
 551   static int _next_offset;
 552   static int _onWaitingList_offset;
 553   static int _notified_offset;
 554   static int _recheckInterval_offset;
 555   static int _timeout_offset;
 556   static int _objectWaiter_offset;
 557   JFR_ONLY(static int _jfr_epoch_offset;)
 558  public:
 559   enum {
 560     NEW           = 0,
 561     STARTED       = 1,
 562     RUNNING       = 2,
 563     PARKING       = 3,
 564     PARKED        = 4,
 565     PINNED        = 5,
 566     TIMED_PARKING = 6,
 567     TIMED_PARKED  = 7,
 568     TIMED_PINNED  = 8,
 569     UNPARKED      = 9,
 570     YIELDING      = 10,
 571     YIELDED       = 11,
 572     BLOCKING      = 12,
 573     BLOCKED       = 13,
 574     UNBLOCKED     = 14,
 575     WAITING       = 15,
 576     WAIT          = 16,  // waiting in Object.wait
 577     TIMED_WAITING = 17,
 578     TIMED_WAIT    = 18,  // waiting in timed-Object.wait
 579     TERMINATED    = 99,
 580 
 581     // additional state bits
 582     SUSPENDED    = 1 << 8,   // suspended when unmounted
 583   };
 584 
 585   static void compute_offsets();
 586   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 587 
 588   // Testers
 589   static bool is_subclass(Klass* klass) {
 590     return klass->is_subclass_of(vmClasses::VirtualThread_klass());
 591   }
 592   static bool is_instance(oop obj);
 593 
 594   static oop vthread_scope();
 595   static oop carrier_thread(oop vthread);
 596   static oop continuation(oop vthread);
 597   static int state(oop vthread);
 598   static void set_state(oop vthread, int state);
 599   static int cmpxchg_state(oop vthread, int old_state, int new_state);
 600   static oop next(oop vthread);
 601   static void set_next(oop vthread, oop next_vthread);
 602   static bool set_onWaitingList(oop vthread, OopHandle& list_head);
 603   static jlong timeout(oop vthread);
 604   static void set_timeout(oop vthread, jlong value);
 605   static void set_notified(oop vthread, jboolean value);
 606   static bool is_preempted(oop vthread);
 607   static JavaThreadStatus map_state_to_thread_status(int state);
 608 
 609   static inline ObjectWaiter* objectWaiter(oop vthread);
 610   static inline void set_objectWaiter(oop vthread, ObjectWaiter* waiter);
 611   static ObjectMonitor* current_pending_monitor(oop vthread);
 612   static ObjectMonitor* current_waiting_monitor(oop vthread);
 613 };
 614 
 615 
 616 // Interface to java.lang.Throwable objects
 617 
 618 class java_lang_Throwable: AllStatic {
 619   friend class BacktraceBuilder;
 620   friend class BacktraceIterator;
 621 
 622  private:
 623   // Trace constants
 624   enum {
 625     trace_methods_offset = 0,
 626     trace_bcis_offset    = 1,
 627     trace_mirrors_offset = 2,
 628     trace_names_offset   = 3,
 629     trace_conts_offset   = 4,
 630     trace_next_offset    = 5,
 631     trace_hidden_offset  = 6,
 632     trace_size           = 7,
 633     trace_chunk_size     = 32
 634   };
 635 
 636   static int _backtrace_offset;
 637   static int _detailMessage_offset;
 638   static int _stackTrace_offset;
 639   static int _depth_offset;
 640   static int _cause_offset;
 641   static int _static_unassigned_stacktrace_offset;
 642 
 643   // StackTrace (programmatic access, new since 1.4)
 644   static void clear_stacktrace(oop throwable);
 645   // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
 646   static void set_stacktrace(oop throwable, oop st_element_array);
 647   static oop unassigned_stacktrace();
 648 
 649  public:
 650   // Backtrace
 651   static oop backtrace(oop throwable);
 652   static void set_backtrace(oop throwable, oop value);
 653   static int depth(oop throwable);
 654   static void set_depth(oop throwable, int value);
 655   // Message
 656   static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
 657   static oop message(oop throwable);
 658   static const char* message_as_utf8(oop throwable);
 659   static void set_message(oop throwable, oop value);
 660 
 661   static oop cause(oop throwable);
 662 
 663   static void print_stack_element(outputStream *st, Method* method, int bci);
 664 
 665   static void compute_offsets();
 666   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 667 
 668   // Allocate space for backtrace (created but stack trace not filled in)
 669   static void allocate_backtrace(Handle throwable, TRAPS);
 670   // Fill in current stack trace for throwable with preallocated backtrace (no GC)
 671   static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
 672   // Fill in current stack trace, can cause GC
 673   static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
 674   static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
 675 
 676   // Programmatic access to stack trace
 677   static void get_stack_trace_elements(int depth, Handle backtrace, objArrayHandle stack_trace, TRAPS);
 678 
 679   // For recreating class initialization error exceptions.
 680   static Handle create_initialization_error(JavaThread* current, Handle throwable);
 681 
 682   // Printing
 683   static void print(oop throwable, outputStream* st);
 684   static void print_stack_trace(Handle throwable, outputStream* st);
 685   static void java_printStackTrace(Handle throwable, TRAPS);
 686   // Debugging
 687   friend class JavaClasses;
 688   // Gets the method and bci of the top frame (TOS). Returns false if this failed.
 689   static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
 690 };
 691 
 692 
 693 // Interface to java.lang.reflect.AccessibleObject objects
 694 
 695 class java_lang_reflect_AccessibleObject: AllStatic {
 696  private:
 697   // Note that to reduce dependencies on the JDK we compute these
 698   // offsets at run-time.
 699   static int _override_offset;
 700 
 701   static void compute_offsets();
 702 
 703  public:
 704   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 705 
 706   // Accessors
 707   static jboolean override(oop reflect);
 708   static void set_override(oop reflect, jboolean value);
 709 
 710   // Debugging
 711   friend class JavaClasses;
 712 };
 713 
 714 
 715 // Interface to java.lang.reflect.Method objects
 716 
 717 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
 718  private:
 719   // Note that to reduce dependencies on the JDK we compute these
 720   // offsets at run-time.
 721   static int _clazz_offset;
 722   static int _name_offset;
 723   static int _returnType_offset;
 724   static int _parameterTypes_offset;
 725   static int _exceptionTypes_offset;
 726   static int _slot_offset;
 727   static int _modifiers_offset;
 728   static int _signature_offset;
 729   static int _annotations_offset;
 730   static int _parameter_annotations_offset;
 731   static int _annotation_default_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 void set_name(oop method, oop value);
 745 
 746   static oop return_type(oop method);
 747   static void set_return_type(oop method, oop value);
 748 
 749   static oop parameter_types(oop method);
 750   static void set_parameter_types(oop method, oop value);
 751 
 752   static int slot(oop reflect);
 753   static void set_slot(oop reflect, int value);
 754 
 755   static void set_exception_types(oop method, oop value);
 756   static void set_modifiers(oop method, int value);
 757   static void set_signature(oop method, oop value);
 758   static void set_annotations(oop method, oop value);
 759   static void set_parameter_annotations(oop method, oop value);
 760   static void set_annotation_default(oop method, oop value);
 761 
 762   // Debugging
 763   friend class JavaClasses;
 764 };
 765 
 766 
 767 // Interface to java.lang.reflect.Constructor objects
 768 
 769 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
 770  private:
 771   // Note that to reduce dependencies on the JDK we compute these
 772   // offsets at run-time.
 773   static int _clazz_offset;
 774   static int _parameterTypes_offset;
 775   static int _exceptionTypes_offset;
 776   static int _slot_offset;
 777   static int _modifiers_offset;
 778   static int _signature_offset;
 779   static int _annotations_offset;
 780   static int _parameter_annotations_offset;
 781 
 782   static void compute_offsets();
 783  public:
 784   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 785 
 786   // Allocation
 787   static Handle create(TRAPS);
 788 
 789   // Accessors
 790   static oop clazz(oop reflect);
 791   static void set_clazz(oop reflect, oop value);
 792 
 793   static oop parameter_types(oop constructor);
 794   static void set_parameter_types(oop constructor, oop value);
 795 
 796   static int slot(oop reflect);
 797   static void set_slot(oop reflect, int value);
 798 
 799   static void set_exception_types(oop constructor, oop value);
 800   static void set_modifiers(oop constructor, int value);
 801   static void set_signature(oop constructor, oop value);
 802   static void set_annotations(oop constructor, oop value);
 803   static void set_parameter_annotations(oop method, oop value);
 804 
 805   // Debugging
 806   friend class JavaClasses;
 807 };
 808 
 809 
 810 // Interface to java.lang.reflect.Field objects
 811 
 812 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
 813  private:
 814   // Note that to reduce dependencies on the JDK we compute these
 815   // offsets at run-time.
 816   static int _clazz_offset;
 817   static int _name_offset;
 818   static int _type_offset;
 819   static int _slot_offset;
 820   static int _modifiers_offset;
 821   static int _trusted_final_offset;
 822   static int _signature_offset;
 823   static int _annotations_offset;
 824 
 825   static void compute_offsets();
 826 
 827  public:
 828   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 829 
 830   // Allocation
 831   static Handle create(TRAPS);
 832 
 833   // Accessors
 834   static oop clazz(oop reflect);
 835   static void set_clazz(oop reflect, oop value);
 836 
 837   static oop name(oop field);
 838   static void set_name(oop field, oop value);
 839 
 840   static oop type(oop field);
 841   static void set_type(oop field, oop value);
 842 
 843   static int slot(oop reflect);
 844   static void set_slot(oop reflect, int value);
 845 
 846   static int modifiers(oop field);
 847   static void set_modifiers(oop field, int value);
 848 
 849   static void set_trusted_final(oop field);
 850 
 851   static void set_signature(oop constructor, oop value);
 852   static void set_annotations(oop constructor, oop value);
 853 
 854   // Debugging
 855   friend class JavaClasses;
 856 };
 857 
 858 class java_lang_reflect_Parameter {
 859  private:
 860   // Note that to reduce dependencies on the JDK we compute these
 861   // offsets at run-time.
 862   static int _name_offset;
 863   static int _modifiers_offset;
 864   static int _index_offset;
 865   static int _executable_offset;
 866 
 867   static void compute_offsets();
 868 
 869  public:
 870   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 871 
 872   // Allocation
 873   static Handle create(TRAPS);
 874 
 875   // Accessors
 876   static oop name(oop field);
 877   static void set_name(oop field, oop value);
 878 
 879   static int index(oop reflect);
 880   static void set_index(oop reflect, int value);
 881 
 882   static int modifiers(oop reflect);
 883   static void set_modifiers(oop reflect, int value);
 884 
 885   static oop executable(oop constructor);
 886   static void set_executable(oop constructor, oop value);
 887 
 888   friend class JavaClasses;
 889 };
 890 
 891 #define MODULE_INJECTED_FIELDS(macro)                            \
 892   macro(java_lang_Module, module_entry, intptr_signature, false)
 893 
 894 class java_lang_Module {
 895   private:
 896     static int _loader_offset;
 897     static int _name_offset;
 898     static int _module_entry_offset;
 899 
 900     static void compute_offsets();
 901 
 902   public:
 903     static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 904 
 905     // Allocation
 906     static Handle create(Handle loader, Handle module_name, TRAPS);
 907 
 908     // Testers
 909     static bool is_instance(oop obj);
 910 
 911     // Accessors
 912     static oop loader(oop module);
 913     static void set_loader(oop module, oop value);
 914 
 915     // CDS
 916     static int module_entry_offset() { return _module_entry_offset; }
 917 
 918     static oop name(oop module);
 919     static void set_name(oop module, oop value);
 920 
 921     static ModuleEntry* module_entry(oop module);
 922     static ModuleEntry* module_entry_raw(oop module);
 923     static void set_module_entry(oop module, ModuleEntry* module_entry);
 924 
 925   friend class JavaClasses;
 926 };
 927 
 928 // Interface to jdk.internal.reflect.ConstantPool objects
 929 class reflect_ConstantPool {
 930  private:
 931   // Note that to reduce dependencies on the JDK we compute these
 932   // offsets at run-time.
 933   static int _oop_offset;
 934 
 935   static void compute_offsets();
 936 
 937  public:
 938   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 939 
 940   // Allocation
 941   static Handle create(TRAPS);
 942 
 943   // Accessors
 944   static void set_cp(oop reflect, ConstantPool* value);
 945   static int oop_offset() { CHECK_INIT(_oop_offset); }
 946 
 947   static ConstantPool* get_cp(oop reflect);
 948 
 949   // Debugging
 950   friend class JavaClasses;
 951 };
 952 
 953 
 954 // Interface to java.lang primitive type boxing objects:
 955 //  - java.lang.Boolean
 956 //  - java.lang.Character
 957 //  - java.lang.Float
 958 //  - java.lang.Double
 959 //  - java.lang.Byte
 960 //  - java.lang.Short
 961 //  - java.lang.Integer
 962 //  - java.lang.Long
 963 
 964 // This could be separated out into 8 individual classes.
 965 
 966 class java_lang_boxing_object: AllStatic {
 967  private:
 968   static int _value_offset;
 969   static int _long_value_offset;
 970 
 971   static void compute_offsets();
 972   static oop initialize_and_allocate(BasicType type, TRAPS);
 973  public:
 974   // Allocation. Returns a boxed value, or null for invalid type.
 975   static oop create(BasicType type, jvalue* value, TRAPS);
 976   // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
 977   static BasicType get_value(oop box, jvalue* value);
 978   static BasicType set_value(oop box, jvalue* value);
 979   static BasicType basic_type(oop box);
 980   static bool is_instance(oop box)                 { return basic_type(box) != T_ILLEGAL; }
 981   static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
 982   static void print(oop box, outputStream* st)     { jvalue value;  print(get_value(box, &value), &value, st); }
 983   static void print(BasicType type, jvalue* value, outputStream* st);
 984 
 985   static int value_offset(BasicType type) {
 986     return is_double_word_type(type) ? _long_value_offset : _value_offset;
 987   }
 988 
 989   static void serialize_offsets(SerializeClosure* f);
 990 
 991   // Debugging
 992   friend class JavaClasses;
 993 };
 994 
 995 
 996 
 997 // Interface to java.lang.ref.Reference objects
 998 
 999 class java_lang_ref_Reference: AllStatic {
1000   static int _referent_offset;
1001   static int _queue_offset;
1002   static int _next_offset;
1003   static int _discovered_offset;
1004 
1005   static bool _offsets_initialized;
1006 
1007  public:
1008   // Accessors
1009   static inline oop weak_referent_no_keepalive(oop ref);
1010   static inline oop weak_referent(oop ref);
1011   static inline oop phantom_referent_no_keepalive(oop ref);
1012   static inline oop unknown_referent_no_keepalive(oop ref);
1013   static inline void clear_referent(oop ref);
1014   static inline void clear_referent_raw(oop ref);
1015   static inline HeapWord* referent_addr_raw(oop ref);
1016   static inline oop next(oop ref);
1017   static inline void set_next(oop ref, oop value);
1018   static inline void set_next_raw(oop ref, oop value);
1019   static inline HeapWord* next_addr_raw(oop ref);
1020   static inline oop discovered(oop ref);
1021   static inline void set_discovered(oop ref, oop value);
1022   static inline void set_discovered_raw(oop ref, oop value);
1023   static inline HeapWord* discovered_addr_raw(oop ref);
1024   static bool is_referent_field(oop obj, ptrdiff_t offset);
1025   static inline bool is_final(oop ref);
1026   static inline bool is_phantom(oop ref);
1027   static inline bool is_weak(oop ref);
1028   static inline bool is_soft(oop ref);
1029 
1030   static int referent_offset()    { CHECK_INIT(_referent_offset); }
1031   static int queue_offset()       { CHECK_INIT(_queue_offset); }
1032   static int next_offset()        { CHECK_INIT(_next_offset); }
1033   static int discovered_offset()  { CHECK_INIT(_discovered_offset); }
1034 
1035   static void compute_offsets();
1036   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1037 };
1038 
1039 
1040 // Interface to java.lang.ref.SoftReference objects
1041 
1042 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
1043   static int _timestamp_offset;
1044   static int _static_clock_offset;
1045 
1046  public:
1047   // Accessors
1048   static jlong timestamp(oop ref);
1049 
1050   // Accessors for statics
1051   static jlong clock();
1052   static void set_clock(jlong value);
1053 
1054   static void compute_offsets();
1055   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1056 };
1057 
1058 // Interface to java.lang.invoke.MethodHandle objects
1059 
1060 class java_lang_invoke_MethodHandle: AllStatic {
1061   friend class JavaClasses;
1062 
1063  private:
1064   static int _type_offset;               // the MethodType of this MH
1065   static int _form_offset;               // the LambdaForm of this MH
1066 
1067   static void compute_offsets();
1068 
1069  public:
1070   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1071 
1072   // Accessors
1073   static oop            type(oop mh);
1074   static void       set_type(oop mh, oop mtype);
1075 
1076   static oop            form(oop mh);
1077   static void       set_form(oop mh, oop lform);
1078 
1079   // Testers
1080   static bool is_subclass(Klass* klass) {
1081     return klass->is_subclass_of(vmClasses::MethodHandle_klass());
1082   }
1083   static bool is_instance(oop obj);
1084 
1085   // Accessors for code generation:
1086   static int type_offset()             { CHECK_INIT(_type_offset); }
1087   static int form_offset()             { CHECK_INIT(_form_offset); }
1088 };
1089 
1090 // Interface to java.lang.invoke.DirectMethodHandle objects
1091 
1092 class java_lang_invoke_DirectMethodHandle: AllStatic {
1093   friend class JavaClasses;
1094 
1095  private:
1096   static int _member_offset;               // the MemberName of this DMH
1097 
1098   static void compute_offsets();
1099 
1100  public:
1101   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1102 
1103   // Accessors
1104   static oop  member(oop mh);
1105 
1106   // Testers
1107   static bool is_subclass(Klass* klass) {
1108     return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass());
1109   }
1110   static bool is_instance(oop obj);
1111 
1112   // Accessors for code generation:
1113   static int member_offset()           { CHECK_INIT(_member_offset); }
1114 };
1115 
1116 // Interface to java.lang.invoke.LambdaForm objects
1117 // (These are a private interface for managing adapter code generation.)
1118 
1119 class java_lang_invoke_LambdaForm: AllStatic {
1120   friend class JavaClasses;
1121 
1122  private:
1123   static int _vmentry_offset;  // type is MemberName
1124 
1125   static void compute_offsets();
1126 
1127  public:
1128   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1129 
1130   // Accessors
1131   static oop            vmentry(oop lform);
1132 
1133   // Testers
1134   static bool is_subclass(Klass* klass) {
1135     return vmClasses::LambdaForm_klass() != nullptr &&
1136       klass->is_subclass_of(vmClasses::LambdaForm_klass());
1137   }
1138   static bool is_instance(oop obj);
1139 
1140   // Accessors for code generation:
1141   static int vmentry_offset()          { CHECK_INIT(_vmentry_offset); }
1142 };
1143 
1144 // Interface to java.lang.invoke.NativeEntryPoint objects
1145 // (These are a private interface for managing adapter code generation.)
1146 
1147 class jdk_internal_foreign_abi_NativeEntryPoint: AllStatic {
1148   friend class JavaClasses;
1149 
1150  private:
1151   static int _method_type_offset;
1152   static int _downcall_stub_address_offset;
1153 
1154   static void compute_offsets();
1155 
1156  public:
1157   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1158 
1159   // Accessors
1160   static oop        method_type(oop entry);
1161   static jlong      downcall_stub_address(oop entry);
1162 
1163   // Testers
1164   static bool is_subclass(Klass* klass) {
1165     return vmClasses::NativeEntryPoint_klass() != nullptr &&
1166       klass->is_subclass_of(vmClasses::NativeEntryPoint_klass());
1167   }
1168   static bool is_instance(oop obj);
1169 
1170   // Accessors for code generation:
1171   static int method_type_offset_in_bytes()           { return _method_type_offset; }
1172   static int downcall_stub_address_offset_in_bytes() { return _downcall_stub_address_offset; }
1173 };
1174 
1175 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic {
1176   friend class JavaClasses;
1177 
1178  private:
1179   static int _inputStorage_offset;
1180   static int _outputStorage_offset;
1181   static int _volatileStorage_offset;
1182   static int _stackAlignment_offset;
1183   static int _shadowSpace_offset;
1184   static int _scratch1_offset;
1185   static int _scratch2_offset;
1186 
1187   static void compute_offsets();
1188 
1189  public:
1190   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1191 
1192   // Accessors
1193   static objArrayOop inputStorage(oop entry);
1194   static objArrayOop outputStorage(oop entry);
1195   static objArrayOop volatileStorage(oop entry);
1196   static jint        stackAlignment(oop entry);
1197   static jint        shadowSpace(oop entry);
1198   static oop         scratch1(oop entry);
1199   static oop         scratch2(oop entry);
1200 
1201   // Testers
1202   static bool is_subclass(Klass* klass) {
1203     return vmClasses::ABIDescriptor_klass() != nullptr &&
1204       klass->is_subclass_of(vmClasses::ABIDescriptor_klass());
1205   }
1206   static bool is_instance(oop obj);
1207 };
1208 
1209 class jdk_internal_foreign_abi_VMStorage: AllStatic {
1210   friend class JavaClasses;
1211 
1212  private:
1213   static int _type_offset;
1214   static int _indexOrOffset_offset;
1215   static int _segmentMaskOrSize_offset;
1216   static int _debugName_offset;
1217 
1218   static void compute_offsets();
1219 
1220  public:
1221   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1222 
1223   // Accessors
1224   static jbyte  type(oop entry);
1225   static jint   index_or_offset(oop entry);
1226   static jshort segment_mask_or_size(oop entry);
1227   static oop    debugName(oop entry);
1228 
1229   // Testers
1230   static bool is_subclass(Klass* klass) {
1231     return vmClasses::VMStorage_klass() != nullptr &&
1232       klass->is_subclass_of(vmClasses::VMStorage_klass());
1233   }
1234   static bool is_instance(oop obj);
1235 };
1236 
1237 class jdk_internal_foreign_abi_CallConv: AllStatic {
1238   friend class JavaClasses;
1239 
1240  private:
1241   static int _argRegs_offset;
1242   static int _retRegs_offset;
1243 
1244   static void compute_offsets();
1245 
1246  public:
1247   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1248 
1249   // Accessors
1250   static objArrayOop argRegs(oop entry);
1251   static objArrayOop retRegs(oop entry);
1252 
1253   // Testers
1254   static bool is_subclass(Klass* klass) {
1255     return vmClasses::CallConv_klass() != nullptr &&
1256       klass->is_subclass_of(vmClasses::CallConv_klass());
1257   }
1258   static bool is_instance(oop obj);
1259 };
1260 
1261 // Interface to java.lang.invoke.MemberName objects
1262 // (These are a private interface for Java code to query the class hierarchy.)
1263 
1264 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro)                                   \
1265   macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1266 
1267 class java_lang_invoke_ResolvedMethodName : AllStatic {
1268   friend class JavaClasses;
1269 
1270   static int _vmtarget_offset;
1271   static int _vmholder_offset;
1272 
1273   static void compute_offsets();
1274  public:
1275   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1276 
1277   static int vmtarget_offset() { CHECK_INIT(_vmtarget_offset); }
1278 
1279   static Method* vmtarget(oop resolved_method);
1280   static void set_vmtarget(oop resolved_method, Method* method);
1281 
1282   static void set_vmholder(oop resolved_method, oop holder);
1283 
1284   // find or create resolved member name
1285   static oop find_resolved_method(const methodHandle& m, TRAPS);
1286 
1287   static bool is_instance(oop resolved_method);
1288 };
1289 
1290 
1291 #define MEMBERNAME_INJECTED_FIELDS(macro)                               \
1292   macro(java_lang_invoke_MemberName, vmindex,  intptr_signature, false)
1293 
1294 
1295 class java_lang_invoke_MemberName: AllStatic {
1296   friend class JavaClasses;
1297 
1298  private:
1299   // From java.lang.invoke.MemberName:
1300   //    private Class<?>   clazz;       // class in which the method is defined
1301   //    private String     name;        // may be null if not yet materialized
1302   //    private Object     type;        // may be null if not yet materialized
1303   //    private int        flags;       // modifier bits; see reflect.Modifier
1304   //    private ResolvedMethodName method;    // holds VM-specific target value
1305   //    private intptr_t   vmindex;     // member index within class or interface
1306   static int _clazz_offset;
1307   static int _name_offset;
1308   static int _type_offset;
1309   static int _flags_offset;
1310   static int _method_offset;
1311   static int _vmindex_offset;
1312 
1313   static void compute_offsets();
1314 
1315  public:
1316   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1317   // Accessors
1318   static oop            clazz(oop mname);
1319   static void       set_clazz(oop mname, oop clazz);
1320 
1321   static oop            type(oop mname);
1322   static void       set_type(oop mname, oop type);
1323 
1324   static oop            name(oop mname);
1325   static void       set_name(oop mname, oop name);
1326 
1327   static int            flags(oop mname);
1328   static void       set_flags(oop mname, int flags);
1329 
1330   // Link through ResolvedMethodName field to get Method*
1331   static Method*        vmtarget(oop mname);
1332   static void       set_method(oop mname, oop method);
1333 
1334   static intptr_t       vmindex(oop mname);
1335   static void       set_vmindex(oop mname, intptr_t index);
1336 
1337   // Testers
1338   static bool is_subclass(Klass* klass) {
1339     return klass->is_subclass_of(vmClasses::MemberName_klass());
1340   }
1341   static bool is_instance(oop obj);
1342 
1343   static bool is_method(oop obj);
1344 
1345   // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1346   enum {
1347     MN_IS_METHOD             = 0x00010000, // method (not constructor)
1348     MN_IS_CONSTRUCTOR        = 0x00020000, // constructor
1349     MN_IS_FIELD              = 0x00040000, // field
1350     MN_IS_TYPE               = 0x00080000, // nested type
1351     MN_CALLER_SENSITIVE      = 0x00100000, // @CallerSensitive annotation detected
1352     MN_TRUSTED_FINAL         = 0x00200000, // trusted final field
1353     MN_HIDDEN_MEMBER         = 0x00400000, // @Hidden annotation detected
1354     MN_REFERENCE_KIND_SHIFT  = 24, // refKind
1355     MN_REFERENCE_KIND_MASK   = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1356     MN_NESTMATE_CLASS        = 0x00000001,
1357     MN_HIDDEN_CLASS          = 0x00000002,
1358     MN_STRONG_LOADER_LINK    = 0x00000004,
1359     MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1360     // Lookup modes
1361     MN_MODULE_MODE           = 0x00000010,
1362     MN_UNCONDITIONAL_MODE    = 0x00000020,
1363     MN_TRUSTED_MODE          = -1
1364   };
1365 
1366   // Accessors for code generation:
1367   static int clazz_offset()   { CHECK_INIT(_clazz_offset); }
1368   static int type_offset()    { CHECK_INIT(_type_offset); }
1369   static int flags_offset()   { CHECK_INIT(_flags_offset); }
1370   static int method_offset()  { CHECK_INIT(_method_offset); }
1371   static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1372 };
1373 
1374 
1375 // Interface to java.lang.invoke.MethodType objects
1376 
1377 class java_lang_invoke_MethodType: AllStatic {
1378   friend class JavaClasses;
1379 
1380  private:
1381   static int _rtype_offset;
1382   static int _ptypes_offset;
1383 
1384   static void compute_offsets();
1385 
1386  public:
1387   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1388   // Accessors
1389   static oop            rtype(oop mt);
1390   static objArrayOop    ptypes(oop mt);
1391 
1392   static oop            ptype(oop mt, int index);
1393   static int            ptype_count(oop mt);
1394 
1395   static int            ptype_slot_count(oop mt);  // extra counts for long/double
1396   static int            rtype_slot_count(oop mt);  // extra counts for long/double
1397 
1398   static Symbol*        as_signature(oop mt, bool intern_if_not_found);
1399   static void           print_signature(oop mt, outputStream* st);
1400 
1401   static bool is_instance(oop obj);
1402 
1403   static bool equals(oop mt1, oop mt2);
1404 
1405   // Accessors for code generation:
1406   static int rtype_offset()  { CHECK_INIT(_rtype_offset); }
1407   static int ptypes_offset() { CHECK_INIT(_ptypes_offset); }
1408 };
1409 
1410 
1411 // Interface to java.lang.invoke.CallSite objects
1412 
1413 class java_lang_invoke_CallSite: AllStatic {
1414   friend class JavaClasses;
1415 
1416 private:
1417   static int _target_offset;
1418   static int _context_offset;
1419 
1420   static void compute_offsets();
1421 
1422 public:
1423   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1424   // Accessors
1425   static oop              target(          oop site);
1426   static void         set_target(          oop site, oop target);
1427   static void         set_target_volatile( oop site, oop target);
1428 
1429   static oop context_no_keepalive(oop site);
1430 
1431   // Testers
1432   static bool is_subclass(Klass* klass) {
1433     return klass->is_subclass_of(vmClasses::CallSite_klass());
1434   }
1435   static bool is_instance(oop obj);
1436 
1437   // Accessors for code generation:
1438   static int target_offset()  { CHECK_INIT(_target_offset); }
1439   static int context_offset() { CHECK_INIT(_context_offset); }
1440 };
1441 
1442 // Interface to java.lang.invoke.ConstantCallSite objects
1443 
1444 class java_lang_invoke_ConstantCallSite: AllStatic {
1445   friend class JavaClasses;
1446 
1447 private:
1448   static int _is_frozen_offset;
1449 
1450   static void compute_offsets();
1451 
1452 public:
1453   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1454   // Accessors
1455   static jboolean is_frozen(oop site);
1456 
1457   // Testers
1458   static bool is_subclass(Klass* klass) {
1459     return klass->is_subclass_of(vmClasses::ConstantCallSite_klass());
1460   }
1461   static bool is_instance(oop obj);
1462 };
1463 
1464 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1465 
1466 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1467   macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1468   macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1469 
1470 class DependencyContext;
1471 
1472 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1473   friend class JavaClasses;
1474 
1475 private:
1476   static int _vmdependencies_offset;
1477   static int _last_cleanup_offset;
1478 
1479   static void compute_offsets();
1480 
1481 public:
1482   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1483   // Accessors
1484   static DependencyContext vmdependencies(oop context);
1485 
1486   // Testers
1487   static bool is_subclass(Klass* klass) {
1488     return klass->is_subclass_of(vmClasses::Context_klass());
1489   }
1490   static bool is_instance(oop obj);
1491 };
1492 
1493 // Interface to java.lang.ClassLoader objects
1494 
1495 #define CLASSLOADER_INJECTED_FIELDS(macro)                            \
1496   macro(java_lang_ClassLoader, loader_data,  intptr_signature, false)
1497 
1498 class java_lang_ClassLoader : AllStatic {
1499  private:
1500   static int _loader_data_offset;
1501   static int _parent_offset;
1502   static int _parallelCapable_offset;
1503   static int _name_offset;
1504   static int _nameAndId_offset;
1505   static int _unnamedModule_offset;
1506 
1507   static void compute_offsets();
1508 
1509  public:
1510   // Support for CDS
1511   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1512   static int loader_data_offset() { return  _loader_data_offset; }
1513 
1514   static ClassLoaderData* loader_data_acquire(oop loader);
1515   static ClassLoaderData* loader_data(oop loader);
1516   static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1517 
1518   static oop parent(oop loader);
1519   static oop parent_no_keepalive(oop loader);
1520   static oop name(oop loader);
1521   static oop nameAndId(oop loader);
1522   static bool isAncestor(oop loader, oop cl);
1523 
1524   // Support for parallelCapable field
1525   static bool parallelCapable(oop the_class_mirror);
1526 
1527   static bool is_trusted_loader(oop loader);
1528 
1529   // Testers
1530   static bool is_subclass(Klass* klass) {
1531     return klass->is_subclass_of(vmClasses::ClassLoader_klass());
1532   }
1533   static bool is_instance(oop obj);
1534 
1535   static oop unnamedModule(oop loader);
1536 
1537   // Debugging
1538   friend class JavaClasses;
1539 };
1540 
1541 
1542 // Interface to java.lang.System objects
1543 
1544 class java_lang_System : AllStatic {
1545  private:
1546   static int _static_in_offset;
1547   static int _static_out_offset;
1548   static int _static_err_offset;
1549 
1550  public:
1551   static int  in_offset() { CHECK_INIT(_static_in_offset); }
1552   static int out_offset() { CHECK_INIT(_static_out_offset); }
1553   static int err_offset() { CHECK_INIT(_static_err_offset); }
1554 
1555   static void compute_offsets();
1556   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1557 
1558   // Debugging
1559   friend class JavaClasses;
1560 };
1561 
1562 
1563 // Interface to java.lang.StackTraceElement objects
1564 
1565 class java_lang_StackTraceElement: AllStatic {
1566  private:
1567   static int _declaringClassObject_offset;
1568   static int _classLoaderName_offset;
1569   static int _moduleName_offset;
1570   static int _moduleVersion_offset;
1571   static int _declaringClass_offset;
1572   static int _methodName_offset;
1573   static int _fileName_offset;
1574   static int _lineNumber_offset;
1575 
1576   // Setters
1577   static void set_classLoaderName(oop element, oop value);
1578   static void set_moduleName(oop element, oop value);
1579   static void set_moduleVersion(oop element, oop value);
1580   static void set_declaringClass(oop element, oop value);
1581   static void set_methodName(oop element, oop value);
1582   static void set_fileName(oop element, oop value);
1583   static void set_lineNumber(oop element, int value);
1584   static void set_declaringClassObject(oop element, oop value);
1585 
1586   static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1587                                    const methodHandle& method, int bci,
1588                                    Symbol*& source, oop& source_file, int& line_number, TRAPS);
1589 
1590  public:
1591   // Create an instance of StackTraceElement
1592   static oop create(const methodHandle& method, int bci, TRAPS);
1593 
1594   static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1595                       int version, int bci, Symbol* name, TRAPS);
1596 
1597   static void compute_offsets();
1598   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1599 
1600 #if INCLUDE_JVMCI
1601   static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1602 #endif
1603 
1604   // Debugging
1605   friend class JavaClasses;
1606 };
1607 
1608 
1609 class Backtrace: AllStatic {
1610  public:
1611   // Helper backtrace functions to store bci|version together.
1612   static int merge_bci_and_version(int bci, int version);
1613   static int merge_mid_and_cpref(int mid, int cpref);
1614   static int bci_at(unsigned int merged);
1615   static int version_at(unsigned int merged);
1616   static int mid_at(unsigned int merged);
1617   static int cpref_at(unsigned int merged);
1618   static int get_line_number(Method* method, int bci);
1619   static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1620 
1621   // Debugging
1622   friend class JavaClasses;
1623 };
1624 
1625 class java_lang_ClassFrameInfo: AllStatic {
1626 private:
1627   static int _classOrMemberName_offset;
1628   static int _flags_offset;
1629 
1630 public:
1631   static oop  classOrMemberName(oop info);
1632   static int  flags(oop info);
1633 
1634   // Setters
1635   static void init_class(Handle stackFrame, const methodHandle& m);
1636   static void init_method(Handle stackFrame, const methodHandle& m, TRAPS);
1637 
1638   static void compute_offsets();
1639   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1640 
1641   // Debugging
1642   friend class JavaClasses;
1643 };
1644 
1645 // Interface to java.lang.StackFrameInfo objects
1646 
1647 #define STACKFRAMEINFO_INJECTED_FIELDS(macro)                      \
1648   macro(java_lang_StackFrameInfo, version, short_signature, false)
1649 
1650 class java_lang_StackFrameInfo: AllStatic {
1651 private:
1652   static int _type_offset;
1653   static int _name_offset;
1654   static int _bci_offset;
1655   static int _version_offset;
1656   static int _contScope_offset;
1657 
1658 public:
1659   // Getters
1660   static oop name(oop info);
1661   static oop type(oop info);
1662   static Method* get_method(oop info);
1663 
1664   // Setters
1665   static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS);
1666   static void set_name(oop info, oop value);
1667   static void set_type(oop info, oop value);
1668   static void set_bci(oop info, int value);
1669 
1670   static void set_version(oop info, short value);
1671   static void set_contScope(oop info, oop value);
1672 
1673   static void compute_offsets();
1674   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1675 
1676   static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1677 
1678   // Debugging
1679   friend class JavaClasses;
1680 };
1681 
1682 class java_lang_LiveStackFrameInfo: AllStatic {
1683  private:
1684   static int _monitors_offset;
1685   static int _locals_offset;
1686   static int _operands_offset;
1687   static int _mode_offset;
1688 
1689  public:
1690   static void set_monitors(oop info, oop value);
1691   static void set_locals(oop info, oop value);
1692   static void set_operands(oop info, oop value);
1693   static void set_mode(oop info, int value);
1694 
1695   static void compute_offsets();
1696   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1697 
1698   // Debugging
1699   friend class JavaClasses;
1700 };
1701 
1702 // Interface to java.lang.reflect.RecordComponent objects
1703 
1704 class java_lang_reflect_RecordComponent: AllStatic {
1705  private:
1706   static int _clazz_offset;
1707   static int _name_offset;
1708   static int _type_offset;
1709   static int _accessor_offset;
1710   static int _signature_offset;
1711   static int _annotations_offset;
1712   static int _typeAnnotations_offset;
1713 
1714   // Setters
1715   static void set_clazz(oop element, oop value);
1716   static void set_name(oop element, oop value);
1717   static void set_type(oop element, oop value);
1718   static void set_accessor(oop element, oop value);
1719   static void set_signature(oop element, oop value);
1720   static void set_annotations(oop element, oop value);
1721   static void set_typeAnnotations(oop element, oop value);
1722 
1723  public:
1724   // Create an instance of RecordComponent
1725   static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1726 
1727   static void compute_offsets();
1728   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1729 
1730   // Debugging
1731   friend class JavaClasses;
1732 };
1733 
1734 
1735 // Interface to java.lang.AssertionStatusDirectives objects
1736 
1737 class java_lang_AssertionStatusDirectives: AllStatic {
1738  private:
1739   static int _classes_offset;
1740   static int _classEnabled_offset;
1741   static int _packages_offset;
1742   static int _packageEnabled_offset;
1743   static int _deflt_offset;
1744 
1745  public:
1746   // Setters
1747   static void set_classes(oop obj, oop val);
1748   static void set_classEnabled(oop obj, oop val);
1749   static void set_packages(oop obj, oop val);
1750   static void set_packageEnabled(oop obj, oop val);
1751   static void set_deflt(oop obj, bool val);
1752 
1753   static void compute_offsets();
1754   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1755 
1756   // Debugging
1757   friend class JavaClasses;
1758 };
1759 
1760 
1761 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1762  private:
1763   static int  _owner_offset;
1764  public:
1765   static void compute_offsets();
1766   static oop  get_owner_threadObj(oop obj);
1767   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1768 };
1769 
1770  // Interface to jdk.internal.misc.UnsafeConsants
1771 
1772 class jdk_internal_misc_UnsafeConstants : AllStatic {
1773  public:
1774   static void set_unsafe_constants();
1775   static void compute_offsets() { }
1776   static void serialize_offsets(SerializeClosure* f) { }
1777 };
1778 
1779 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects
1780 
1781 class vector_VectorPayload : AllStatic {
1782  private:
1783   static int _payload_offset;
1784  public:
1785   static void set_payload(oop o, oop val);
1786 
1787   static void compute_offsets();
1788   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1789 
1790   // Testers
1791   static bool is_subclass(Klass* klass) {
1792     return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass());
1793   }
1794   static bool is_instance(oop obj);
1795 };
1796 
1797 class java_lang_Integer : AllStatic {
1798 public:
1799   static jint value(oop obj);
1800 };
1801 
1802 class java_lang_Long : AllStatic {
1803 public:
1804   static jlong value(oop obj);
1805 };
1806 
1807 class java_lang_Character : AllStatic {
1808 public:
1809   static jchar value(oop obj);
1810 };
1811 
1812 class java_lang_Short : AllStatic {
1813 public:
1814   static jshort value(oop obj);
1815 };
1816 
1817 class java_lang_Byte : AllStatic {
1818 public:
1819   static jbyte value(oop obj);
1820 };
1821 
1822 class java_lang_Boolean : AllStatic {
1823  private:
1824   static int _static_TRUE_offset;
1825   static int _static_FALSE_offset;
1826  public:
1827   static Symbol* symbol();
1828   static void compute_offsets(InstanceKlass* k);
1829   static oop  get_TRUE(InstanceKlass *k);
1830   static oop  get_FALSE(InstanceKlass *k);
1831   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1832   static jboolean value(oop obj);
1833 };
1834 
1835 class java_lang_Integer_IntegerCache : AllStatic {
1836  private:
1837   static int _static_cache_offset;
1838  public:
1839   static Symbol* symbol();
1840   static void compute_offsets(InstanceKlass* k);
1841   static objArrayOop  cache(InstanceKlass *k);
1842   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1843 };
1844 
1845 class java_lang_Long_LongCache : AllStatic {
1846  private:
1847   static int _static_cache_offset;
1848  public:
1849   static Symbol* symbol();
1850   static void compute_offsets(InstanceKlass* k);
1851   static objArrayOop  cache(InstanceKlass *k);
1852   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1853 };
1854 
1855 class java_lang_Character_CharacterCache : AllStatic {
1856  private:
1857   static int _static_cache_offset;
1858  public:
1859   static Symbol* symbol();
1860   static void compute_offsets(InstanceKlass* k);
1861   static objArrayOop  cache(InstanceKlass *k);
1862   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1863 };
1864 
1865 class java_lang_Short_ShortCache : AllStatic {
1866  private:
1867   static int _static_cache_offset;
1868  public:
1869   static Symbol* symbol();
1870   static void compute_offsets(InstanceKlass* k);
1871   static objArrayOop  cache(InstanceKlass *k);
1872   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1873 };
1874 
1875 class java_lang_Byte_ByteCache : AllStatic {
1876  private:
1877   static int _static_cache_offset;
1878  public:
1879   static Symbol* symbol();
1880   static void compute_offsets(InstanceKlass* k);
1881   static objArrayOop  cache(InstanceKlass *k);
1882   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1883 };
1884 
1885 
1886 // Interface to java.lang.InternalError objects
1887 
1888 #define INTERNALERROR_INJECTED_FIELDS(macro)                      \
1889   macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1890 
1891 class java_lang_InternalError : AllStatic {
1892  private:
1893   static int _during_unsafe_access_offset;
1894  public:
1895   static jboolean during_unsafe_access(oop internal_error);
1896   static void set_during_unsafe_access(oop internal_error);
1897   static void compute_offsets();
1898   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1899 };
1900 
1901 // Use to declare fields that need to be injected into Java classes
1902 // for the JVM to use.  The name_index and signature_index are
1903 // declared in vmSymbols.  The may_be_java flag is used to declare
1904 // fields that might already exist in Java but should be injected if
1905 // they don't.  Otherwise the field is unconditionally injected and
1906 // the JVM uses the injected one.  This is to ensure that name
1907 // collisions don't occur.  In general may_be_java should be false
1908 // unless there's a good reason.
1909 
1910 class InjectedField {
1911  public:
1912   const vmClassID klass_id;
1913   const vmSymbolID name_index;
1914   const vmSymbolID signature_index;
1915   const bool           may_be_java;
1916 
1917 
1918   Klass* klass() const      { return vmClasses::klass_at(klass_id); }
1919   Symbol* name() const      { return lookup_symbol(name_index); }
1920   Symbol* signature() const { return lookup_symbol(signature_index); }
1921 
1922   int compute_offset();
1923 
1924   // Find the Symbol for this index
1925   static Symbol* lookup_symbol(vmSymbolID symbol_index) {
1926     return Symbol::vm_symbol_at(symbol_index);
1927   }
1928 };
1929 
1930 
1931 // Interface to hard-coded offset checking
1932 
1933 enum class InjectedFieldID : int;
1934 
1935 class JavaClasses : AllStatic {
1936  private:
1937 
1938   static InjectedField _injected_fields[];
1939 
1940   static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1941  public:
1942 
1943   static int compute_injected_offset(InjectedFieldID id);
1944 
1945   static void compute_offsets();
1946   static void check_offsets() PRODUCT_RETURN;
1947   static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1948   static InjectedField* get_injected(Symbol* class_name, int* field_count);
1949   static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1950 
1951   static void compute_offset(int &dest_offset,
1952                              InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
1953                              bool is_static = false);
1954   static void compute_offset(int& dest_offset, InstanceKlass* ik,
1955                              const char* name_string, Symbol* signature_symbol,
1956                              bool is_static = false);
1957 };
1958 
1959 #undef CHECK_INIT
1960 
1961 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP