1 /*
   2  * Copyright (c) 1997, 2025, 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, source_file,            object_signature,  false) \
 232   macro(java_lang_Class, init_lock,              object_signature,  false)
 233 
 234 class java_lang_Class : AllStatic {
 235   friend class VMStructs;
 236   friend class JVMCIVMStructs;
 237 
 238  private:
 239 
 240   // The fake offsets are added by the class loader when java.lang.Class is loaded
 241 
 242   static int _klass_offset;
 243   static int _array_klass_offset;
 244 
 245   static int _oop_size_offset;
 246   static int _static_oop_field_count_offset;
 247 
 248   static int _protection_domain_offset;
 249   static int _init_lock_offset;
 250   static int _signers_offset;
 251   static int _class_loader_offset;
 252   static int _module_offset;
 253   static int _component_mirror_offset;
 254 
 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   static int _modifiers_offset;
 261   static int _is_primitive_offset;
 262   static int _raw_access_flags_offset;
 263 
 264   static bool _offsets_computed;
 265 
 266   static GrowableArray<Klass*>* _fixup_mirror_list;
 267   static GrowableArray<Klass*>* _fixup_module_field_list;
 268 
 269   static void set_init_lock(oop java_class, oop init_lock);
 270   static void set_protection_domain(oop java_class, oop protection_domain);
 271   static void set_class_loader(oop java_class, oop class_loader);
 272   static void set_component_mirror(oop java_class, oop comp_mirror);
 273 
 274   static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
 275                                        Handle classData, TRAPS);
 276   static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
 277  public:
 278   static void allocate_fixup_lists();
 279   static void compute_offsets();
 280 
 281   // Instance creation
 282   static void allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
 283                               Handle& mirror, Handle& comp_mirror, TRAPS); // returns mirror and comp_mirror
 284   static void create_mirror(Klass* k, Handle class_loader, Handle module,
 285                             Handle protection_domain, Handle classData, TRAPS);
 286   static void fixup_mirror(Klass* k, TRAPS);
 287   static oop  create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
 288 
 289   // Archiving
 290   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 291   static void create_scratch_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
 292   static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
 293                                       Handle protection_domain,
 294                                       TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
 295 
 296   static void fixup_module_field(Klass* k, Handle module);
 297 
 298   // Conversion
 299   static Klass* as_Klass(oop java_class);
 300   static void set_klass(oop java_class, Klass* klass);
 301   static BasicType as_BasicType(oop java_class, Klass** reference_klass = nullptr);
 302   static Symbol* as_signature(oop java_class, bool intern_if_not_found);
 303   static void print_signature(oop java_class, outputStream *st);
 304   static const char* as_external_name(oop java_class);
 305   // Testing
 306   static bool is_instance(oop obj);
 307 
 308   static bool is_primitive(oop java_class);
 309   static void set_is_primitive(oop java_class);
 310   static BasicType primitive_type(oop java_class);
 311   static oop primitive_mirror(BasicType t);
 312   // JVM_NewArray support
 313   static Klass* array_klass_acquire(oop java_class);
 314   static void release_set_array_klass(oop java_class, Klass* klass);
 315   // compiler support for class operations
 316   static int klass_offset()                { CHECK_INIT(_klass_offset); }
 317   static int array_klass_offset()          { CHECK_INIT(_array_klass_offset); }
 318 
 319   // Support for classRedefinedCount field
 320   static int classRedefinedCount(oop the_class_mirror);
 321   static void set_classRedefinedCount(oop the_class_mirror, int value);
 322 
 323   // Support for embedded per-class oops
 324   static oop  protection_domain(oop java_class);
 325   static oop  init_lock(oop java_class);
 326   static void clear_init_lock(oop java_class) {
 327     set_init_lock(java_class, nullptr);
 328   }
 329   static oop  component_mirror(oop java_class);
 330   static int component_mirror_offset() { return _component_mirror_offset; }
 331   static objArrayOop signers(oop java_class);
 332   static oop  class_data(oop java_class);
 333   static void set_class_data(oop java_class, oop classData);
 334   static void set_reflection_data(oop java_class, oop reflection_data);
 335   static int reflection_data_offset() { return _reflectionData_offset; }
 336 
 337   static oop class_loader(oop java_class);
 338   static void set_module(oop java_class, oop module);
 339   static oop module(oop java_class);
 340 
 341   static oop name(Handle java_class, TRAPS);
 342 
 343   static oop source_file(oop java_class);
 344   static void set_source_file(oop java_class, oop source_file);
 345 
 346   static int modifiers(oop java_class);
 347   static void set_modifiers(oop java_class, u2 value);
 348 
 349   static int raw_access_flags(oop java_class);
 350   static void set_raw_access_flags(oop java_class, u2 value);
 351 
 352   static size_t oop_size(oop java_class);
 353   static void set_oop_size(HeapWord* java_class, size_t size);
 354   static int static_oop_field_count(oop java_class);
 355   static void set_static_oop_field_count(oop java_class, int size);
 356 
 357   static GrowableArray<Klass*>* fixup_mirror_list() {
 358     return _fixup_mirror_list;
 359   }
 360   static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
 361     _fixup_mirror_list = v;
 362   }
 363 
 364   static GrowableArray<Klass*>* fixup_module_field_list() {
 365     return _fixup_module_field_list;
 366   }
 367   static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
 368     _fixup_module_field_list = v;
 369   }
 370 
 371   // Debugging
 372   friend class JavaClasses;
 373 };
 374 
 375 // Interface to java.lang.Thread objects
 376 
 377 #define THREAD_INJECTED_FIELDS(macro)                                  \
 378   macro(java_lang_Thread, jvmti_thread_state, intptr_signature, false) \
 379   macro(java_lang_Thread, jvmti_VTMS_transition_disable_count, int_signature, false) \
 380   macro(java_lang_Thread, jvmti_is_in_VTMS_transition, bool_signature, false) \
 381   JFR_ONLY(macro(java_lang_Thread, jfr_epoch, short_signature, false))
 382 
 383 class java_lang_Thread : AllStatic {
 384   friend class java_lang_VirtualThread;
 385   friend class JVMCIVMStructs;
 386  private:
 387   // Note that for this class the layout changed between JDK1.2 and JDK1.3,
 388   // so we compute the offsets at startup rather than hard-wiring them.
 389   static int _holder_offset;
 390   static int _name_offset;
 391   static int _contextClassLoader_offset;
 392   static int _eetop_offset;
 393   static int _jvmti_thread_state_offset;
 394   static int _jvmti_VTMS_transition_disable_count_offset;
 395   static int _jvmti_is_in_VTMS_transition_offset;
 396   static int _interrupted_offset;
 397   static int _interruptLock_offset;
 398   static int _tid_offset;
 399   static int _continuation_offset;
 400   static int _park_blocker_offset;
 401   static int _scopedValueBindings_offset;
 402   JFR_ONLY(static int _jfr_epoch_offset;)
 403 
 404   static void compute_offsets();
 405 
 406  public:
 407   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 408 
 409   // Returns the JavaThread associated with the thread obj
 410   static JavaThread* thread(oop java_thread);
 411   static JavaThread* thread_acquire(oop java_thread);
 412   // Set JavaThread for instance
 413   static void set_thread(oop java_thread, JavaThread* thread);
 414   static void release_set_thread(oop java_thread, JavaThread* thread);
 415   // FieldHolder
 416   static oop holder(oop java_thread);
 417   // interruptLock
 418   static oop interrupt_lock(oop java_thread);
 419   // Interrupted status
 420   static bool interrupted(oop java_thread);
 421   static void set_interrupted(oop java_thread, bool val);
 422   // Name
 423   static oop name(oop java_thread);
 424   static void set_name(oop java_thread, oop name);
 425   // Priority
 426   static ThreadPriority priority(oop java_thread);
 427   static void set_priority(oop java_thread, ThreadPriority priority);
 428   // Thread group
 429   static oop  threadGroup(oop java_thread);
 430   // Alive (NOTE: this is not really a field, but provides the correct
 431   // definition without doing a Java call)
 432   static bool is_alive(oop java_thread);
 433   // Daemon
 434   static bool is_daemon(oop java_thread);
 435   static void set_daemon(oop java_thread);
 436   // Context ClassLoader
 437   static oop context_class_loader(oop java_thread);
 438   // Stack size hint
 439   static jlong stackSize(oop java_thread);
 440   // Thread ID
 441   static int64_t thread_id(oop java_thread);
 442   static ByteSize thread_id_offset();
 443   // Continuation
 444   static inline oop continuation(oop java_thread);
 445 
 446   static JvmtiThreadState* jvmti_thread_state(oop java_thread);
 447   static void set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state);
 448   static int  VTMS_transition_disable_count(oop java_thread);
 449   static void inc_VTMS_transition_disable_count(oop java_thread);
 450   static void dec_VTMS_transition_disable_count(oop java_thread);
 451   static bool is_in_VTMS_transition(oop java_thread);
 452   static void set_is_in_VTMS_transition(oop java_thread, bool val);
 453   static int  is_in_VTMS_transition_offset();
 454 
 455   // Clear all scoped value bindings on error
 456   static void clear_scopedValueBindings(oop java_thread);
 457 
 458   // Blocker object responsible for thread parking
 459   static oop park_blocker(oop java_thread);
 460 
 461   // Write thread status info to threadStatus field of java.lang.Thread.
 462   static void set_thread_status(oop java_thread_oop, JavaThreadStatus status);
 463   // Read thread status info from threadStatus field of java.lang.Thread.
 464   static JavaThreadStatus get_thread_status(oop java_thread_oop);
 465 
 466   static const char*  thread_status_name(oop java_thread_oop);
 467 
 468   // Fill in current stack trace, can cause GC
 469   static oop async_get_stack_trace(jobject jthread, TRAPS);
 470 
 471   JFR_ONLY(static u2 jfr_epoch(oop java_thread);)
 472   JFR_ONLY(static void set_jfr_epoch(oop java_thread, u2 epoch);)
 473   JFR_ONLY(static int jfr_epoch_offset() { CHECK_INIT(_jfr_epoch_offset); })
 474 
 475   // Debugging
 476   friend class JavaClasses;
 477 };
 478 
 479 // Interface to java.lang.Thread$FieldHolder objects
 480 
 481 class java_lang_Thread_FieldHolder : AllStatic {
 482  private:
 483   static int _group_offset;
 484   static int _priority_offset;
 485   static int _stackSize_offset;
 486   static int _daemon_offset;
 487   static int _thread_status_offset;
 488 
 489   static void compute_offsets();
 490 
 491  public:
 492   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 493 
 494   static oop threadGroup(oop holder);
 495 
 496   static ThreadPriority priority(oop holder);
 497   static void set_priority(oop holder, ThreadPriority priority);
 498 
 499   static jlong stackSize(oop holder);
 500 
 501   static bool is_daemon(oop holder);
 502   static void set_daemon(oop holder, bool val);
 503 
 504   static void set_thread_status(oop holder, JavaThreadStatus status);
 505   static JavaThreadStatus get_thread_status(oop holder);
 506 
 507   friend class JavaClasses;
 508 };
 509 
 510 // Interface to java.lang.Thread$Constants objects
 511 
 512 class java_lang_Thread_Constants : AllStatic {
 513  private:
 514   static int _static_VTHREAD_GROUP_offset;
 515   static int _static_NOT_SUPPORTED_CLASSLOADER_offset;
 516 
 517   static void compute_offsets();
 518   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 519 
 520  public:
 521   static oop get_VTHREAD_GROUP();
 522 
 523   friend class JavaClasses;
 524 };
 525 
 526 // Interface to java.lang.ThreadGroup objects
 527 
 528 class java_lang_ThreadGroup : AllStatic {
 529  private:
 530   static int _parent_offset;
 531   static int _name_offset;
 532   static int _maxPriority_offset;
 533   static int _daemon_offset;
 534 
 535   static void compute_offsets();
 536  public:
 537   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 538 
 539   // parent ThreadGroup
 540   static oop parent(oop java_thread_group);
 541   // name
 542   static const char* name(oop java_thread_group);
 543   // maxPriority in group
 544   static ThreadPriority maxPriority(oop java_thread_group);
 545   // Daemon
 546   static bool is_daemon(oop java_thread_group);
 547 
 548   // Debugging
 549   friend class JavaClasses;
 550 };
 551 
 552 
 553 // Interface to java.lang.VirtualThread objects
 554 #define VTHREAD_INJECTED_FIELDS(macro)                                           \
 555   macro(java_lang_VirtualThread,   objectWaiter,  intptr_signature,       false)
 556 
 557 class java_lang_VirtualThread : AllStatic {
 558  private:
 559   static int static_vthread_scope_offset;
 560   static int _carrierThread_offset;
 561   static int _continuation_offset;
 562   static int _state_offset;
 563   static int _next_offset;
 564   static int _onWaitingList_offset;
 565   static int _notified_offset;
 566   static int _recheckInterval_offset;
 567   static int _timeout_offset;
 568   static int _objectWaiter_offset;
 569   JFR_ONLY(static int _jfr_epoch_offset;)
 570  public:
 571   enum {
 572     NEW           = 0,
 573     STARTED       = 1,
 574     RUNNING       = 2,
 575     PARKING       = 3,
 576     PARKED        = 4,
 577     PINNED        = 5,
 578     TIMED_PARKING = 6,
 579     TIMED_PARKED  = 7,
 580     TIMED_PINNED  = 8,
 581     UNPARKED      = 9,
 582     YIELDING      = 10,
 583     YIELDED       = 11,
 584     BLOCKING      = 12,
 585     BLOCKED       = 13,
 586     UNBLOCKED     = 14,
 587     WAITING       = 15,
 588     WAIT          = 16,  // waiting in Object.wait
 589     TIMED_WAITING = 17,
 590     TIMED_WAIT    = 18,  // waiting in timed-Object.wait
 591     TERMINATED    = 99,
 592 
 593     // additional state bits
 594     SUSPENDED    = 1 << 8,   // suspended when unmounted
 595   };
 596 
 597   static void compute_offsets();
 598   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 599 
 600   // Testers
 601   static bool is_subclass(Klass* klass) {
 602     return klass->is_subclass_of(vmClasses::VirtualThread_klass());
 603   }
 604   static bool is_instance(oop obj);
 605 
 606   static oop vthread_scope();
 607   static oop carrier_thread(oop vthread);
 608   static oop continuation(oop vthread);
 609   static int state(oop vthread);
 610   static void set_state(oop vthread, int state);
 611   static int cmpxchg_state(oop vthread, int old_state, int new_state);
 612   static oop next(oop vthread);
 613   static void set_next(oop vthread, oop next_vthread);
 614   static bool set_onWaitingList(oop vthread, OopHandle& list_head);
 615   static jlong timeout(oop vthread);
 616   static void set_timeout(oop vthread, jlong value);
 617   static void set_notified(oop vthread, jboolean value);
 618   static bool is_preempted(oop vthread);
 619   static JavaThreadStatus map_state_to_thread_status(int state);
 620 
 621   static inline ObjectWaiter* objectWaiter(oop vthread);
 622   static inline void set_objectWaiter(oop vthread, ObjectWaiter* waiter);
 623   static ObjectMonitor* current_pending_monitor(oop vthread);
 624   static ObjectMonitor* current_waiting_monitor(oop vthread);
 625 };
 626 
 627 
 628 // Interface to java.lang.Throwable objects
 629 
 630 class java_lang_Throwable: AllStatic {
 631   friend class BacktraceBuilder;
 632   friend class BacktraceIterator;
 633 
 634  private:
 635   // Trace constants
 636   enum {
 637     trace_methods_offset = 0,
 638     trace_bcis_offset    = 1,
 639     trace_mirrors_offset = 2,
 640     trace_names_offset   = 3,
 641     trace_conts_offset   = 4,
 642     trace_next_offset    = 5,
 643     trace_hidden_offset  = 6,
 644     trace_size           = 7,
 645     trace_chunk_size     = 32
 646   };
 647 
 648   static int _backtrace_offset;
 649   static int _detailMessage_offset;
 650   static int _stackTrace_offset;
 651   static int _depth_offset;
 652   static int _cause_offset;
 653   static int _static_unassigned_stacktrace_offset;
 654 
 655   // StackTrace (programmatic access, new since 1.4)
 656   static void clear_stacktrace(oop throwable);
 657   // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
 658   static void set_stacktrace(oop throwable, oop st_element_array);
 659   static oop unassigned_stacktrace();
 660 
 661  public:
 662   // Backtrace
 663   static oop backtrace(oop throwable);
 664   static void set_backtrace(oop throwable, oop value);
 665   static int depth(oop throwable);
 666   static void set_depth(oop throwable, int value);
 667   // Message
 668   static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
 669   static oop message(oop throwable);
 670   static const char* message_as_utf8(oop throwable);
 671   static void set_message(oop throwable, oop value);
 672 
 673   static oop cause(oop throwable);
 674 
 675   static void print_stack_element(outputStream *st, Method* method, int bci);
 676 
 677   static void compute_offsets();
 678   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 679 
 680   // Allocate space for backtrace (created but stack trace not filled in)
 681   static void allocate_backtrace(Handle throwable, TRAPS);
 682   // Fill in current stack trace for throwable with preallocated backtrace (no GC)
 683   static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
 684   // Fill in current stack trace, can cause GC
 685   static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
 686   static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
 687 
 688   // Programmatic access to stack trace
 689   static void get_stack_trace_elements(int depth, Handle backtrace, objArrayHandle stack_trace, TRAPS);
 690 
 691   // For recreating class initialization error exceptions.
 692   static Handle create_initialization_error(JavaThread* current, Handle throwable);
 693 
 694   // Printing
 695   static void print(oop throwable, outputStream* st);
 696   static void print_stack_trace(Handle throwable, outputStream* st);
 697   static void java_printStackTrace(Handle throwable, TRAPS);
 698   // Debugging
 699   friend class JavaClasses;
 700   // Gets the method and bci of the top frame (TOS). Returns false if this failed.
 701   static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
 702 };
 703 
 704 
 705 // Interface to java.lang.reflect.AccessibleObject objects
 706 
 707 class java_lang_reflect_AccessibleObject: AllStatic {
 708  private:
 709   // Note that to reduce dependencies on the JDK we compute these
 710   // offsets at run-time.
 711   static int _override_offset;
 712 
 713   static void compute_offsets();
 714 
 715  public:
 716   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 717 
 718   // Accessors
 719   static jboolean override(oop reflect);
 720   static void set_override(oop reflect, jboolean value);
 721 
 722   // Debugging
 723   friend class JavaClasses;
 724 };
 725 
 726 
 727 // Interface to java.lang.reflect.Method objects
 728 
 729 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
 730  private:
 731   // Note that to reduce dependencies on the JDK we compute these
 732   // offsets at run-time.
 733   static int _clazz_offset;
 734   static int _name_offset;
 735   static int _returnType_offset;
 736   static int _parameterTypes_offset;
 737   static int _exceptionTypes_offset;
 738   static int _slot_offset;
 739   static int _modifiers_offset;
 740   static int _signature_offset;
 741   static int _annotations_offset;
 742   static int _parameter_annotations_offset;
 743   static int _annotation_default_offset;
 744 
 745   static void compute_offsets();
 746  public:
 747   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 748 
 749   // Allocation
 750   static Handle create(TRAPS);
 751 
 752   // Accessors
 753   static oop clazz(oop reflect);
 754   static void set_clazz(oop reflect, oop value);
 755 
 756   static void set_name(oop method, oop value);
 757 
 758   static oop return_type(oop method);
 759   static void set_return_type(oop method, oop value);
 760 
 761   static oop parameter_types(oop method);
 762   static void set_parameter_types(oop method, oop value);
 763 
 764   static int slot(oop reflect);
 765   static void set_slot(oop reflect, int value);
 766 
 767   static void set_exception_types(oop method, oop value);
 768   static void set_modifiers(oop method, int value);
 769   static void set_signature(oop method, oop value);
 770   static void set_annotations(oop method, oop value);
 771   static void set_parameter_annotations(oop method, oop value);
 772   static void set_annotation_default(oop method, oop value);
 773 
 774   // Debugging
 775   friend class JavaClasses;
 776 };
 777 
 778 
 779 // Interface to java.lang.reflect.Constructor objects
 780 
 781 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
 782  private:
 783   // Note that to reduce dependencies on the JDK we compute these
 784   // offsets at run-time.
 785   static int _clazz_offset;
 786   static int _parameterTypes_offset;
 787   static int _exceptionTypes_offset;
 788   static int _slot_offset;
 789   static int _modifiers_offset;
 790   static int _signature_offset;
 791   static int _annotations_offset;
 792   static int _parameter_annotations_offset;
 793 
 794   static void compute_offsets();
 795  public:
 796   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 797 
 798   // Allocation
 799   static Handle create(TRAPS);
 800 
 801   // Accessors
 802   static oop clazz(oop reflect);
 803   static void set_clazz(oop reflect, oop value);
 804 
 805   static oop parameter_types(oop constructor);
 806   static void set_parameter_types(oop constructor, oop value);
 807 
 808   static int slot(oop reflect);
 809   static void set_slot(oop reflect, int value);
 810 
 811   static void set_exception_types(oop constructor, oop value);
 812   static void set_modifiers(oop constructor, int value);
 813   static void set_signature(oop constructor, oop value);
 814   static void set_annotations(oop constructor, oop value);
 815   static void set_parameter_annotations(oop method, oop value);
 816 
 817   // Debugging
 818   friend class JavaClasses;
 819 };
 820 
 821 
 822 // Interface to java.lang.reflect.Field objects
 823 
 824 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
 825  private:
 826   // Note that to reduce dependencies on the JDK we compute these
 827   // offsets at run-time.
 828   static int _clazz_offset;
 829   static int _name_offset;
 830   static int _type_offset;
 831   static int _slot_offset;
 832   static int _modifiers_offset;
 833   static int _flags_offset;
 834   static int _signature_offset;
 835   static int _annotations_offset;
 836 
 837   static void compute_offsets();
 838 
 839  public:
 840   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 841 
 842   // Allocation
 843   static Handle create(TRAPS);
 844 
 845   // Accessors
 846   static oop clazz(oop reflect);
 847   static void set_clazz(oop reflect, oop value);
 848 
 849   static oop name(oop field);
 850   static void set_name(oop field, oop value);
 851 
 852   static oop type(oop field);
 853   static void set_type(oop field, oop value);
 854 
 855   static int slot(oop reflect);
 856   static void set_slot(oop reflect, int value);
 857 
 858   static int modifiers(oop field);
 859   static void set_modifiers(oop field, int value);
 860 
 861   static void set_flags(oop field, int value);
 862 
 863   static void set_signature(oop constructor, oop value);
 864   static void set_annotations(oop constructor, oop value);
 865 
 866   // Debugging
 867   friend class JavaClasses;
 868 };
 869 
 870 class java_lang_reflect_Parameter {
 871  private:
 872   // Note that to reduce dependencies on the JDK we compute these
 873   // offsets at run-time.
 874   static int _name_offset;
 875   static int _modifiers_offset;
 876   static int _index_offset;
 877   static int _executable_offset;
 878 
 879   static void compute_offsets();
 880 
 881  public:
 882   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 883 
 884   // Allocation
 885   static Handle create(TRAPS);
 886 
 887   // Accessors
 888   static oop name(oop field);
 889   static void set_name(oop field, oop value);
 890 
 891   static int index(oop reflect);
 892   static void set_index(oop reflect, int value);
 893 
 894   static int modifiers(oop reflect);
 895   static void set_modifiers(oop reflect, int value);
 896 
 897   static oop executable(oop constructor);
 898   static void set_executable(oop constructor, oop value);
 899 
 900   friend class JavaClasses;
 901 };
 902 
 903 #define MODULE_INJECTED_FIELDS(macro)                            \
 904   macro(java_lang_Module, module_entry, intptr_signature, false)
 905 
 906 class java_lang_Module {
 907   private:
 908     static int _loader_offset;
 909     static int _name_offset;
 910     static int _module_entry_offset;
 911 
 912     static void compute_offsets();
 913 
 914   public:
 915     static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 916 
 917     // Allocation
 918     static Handle create(Handle loader, Handle module_name, TRAPS);
 919 
 920     // Testers
 921     static bool is_instance(oop obj);
 922 
 923     // Accessors
 924     static oop loader(oop module);
 925     static void set_loader(oop module, oop value);
 926 
 927     // CDS
 928     static int module_entry_offset() { return _module_entry_offset; }
 929 
 930     static oop name(oop module);
 931     static void set_name(oop module, oop value);
 932 
 933     static ModuleEntry* module_entry(oop module);
 934     static ModuleEntry* module_entry_raw(oop module);
 935     static void set_module_entry(oop module, ModuleEntry* module_entry);
 936 
 937   friend class JavaClasses;
 938 };
 939 
 940 // Interface to jdk.internal.reflect.ConstantPool objects
 941 class reflect_ConstantPool {
 942  private:
 943   // Note that to reduce dependencies on the JDK we compute these
 944   // offsets at run-time.
 945   static int _oop_offset;
 946 
 947   static void compute_offsets();
 948 
 949  public:
 950   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 951 
 952   // Allocation
 953   static Handle create(TRAPS);
 954 
 955   // Accessors
 956   static void set_cp(oop reflect, ConstantPool* value);
 957   static int oop_offset() { CHECK_INIT(_oop_offset); }
 958 
 959   static ConstantPool* get_cp(oop reflect);
 960 
 961   // Debugging
 962   friend class JavaClasses;
 963 };
 964 
 965 
 966 // Interface to java.lang primitive type boxing objects:
 967 //  - java.lang.Boolean
 968 //  - java.lang.Character
 969 //  - java.lang.Float
 970 //  - java.lang.Double
 971 //  - java.lang.Byte
 972 //  - java.lang.Short
 973 //  - java.lang.Integer
 974 //  - java.lang.Long
 975 
 976 // This could be separated out into 8 individual classes.
 977 
 978 class java_lang_boxing_object: AllStatic {
 979  private:
 980   static int* _offsets;
 981 
 982   static void compute_offsets();
 983   static oop initialize_and_allocate(BasicType type, TRAPS);
 984  public:
 985   // Allocation. Returns a boxed value, or null for invalid type.
 986   static oop create(BasicType type, jvalue* value, TRAPS);
 987   // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
 988   static BasicType get_value(oop box, jvalue* value);
 989   static BasicType set_value(oop box, jvalue* value);
 990   static BasicType basic_type(oop box);
 991   static bool is_instance(oop box)                 { return basic_type(box) != T_ILLEGAL; }
 992   static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
 993   static void print(oop box, outputStream* st)     { jvalue value;  print(get_value(box, &value), &value, st); }
 994   static void print(BasicType type, jvalue* value, outputStream* st);
 995 
 996   static int value_offset(BasicType type) {
 997     assert(type >= T_BOOLEAN && type <= T_LONG, "BasicType out of range");
 998     assert(_offsets != nullptr, "Uninitialized offsets");
 999     return _offsets[type - T_BOOLEAN];
1000   }
1001 
1002   static void serialize_offsets(SerializeClosure* f);
1003 
1004   // Debugging
1005   friend class JavaClasses;
1006 };
1007 
1008 
1009 
1010 // Interface to java.lang.ref.Reference objects
1011 
1012 class java_lang_ref_Reference: AllStatic {
1013   static int _referent_offset;
1014   static int _queue_offset;
1015   static int _next_offset;
1016   static int _discovered_offset;
1017 
1018   static bool _offsets_initialized;
1019 
1020  public:
1021   // Accessors
1022   static inline oop weak_referent_no_keepalive(oop ref);
1023   static inline oop weak_referent(oop ref);
1024   static inline oop phantom_referent_no_keepalive(oop ref);
1025   static inline oop unknown_referent_no_keepalive(oop ref);
1026   static inline void clear_referent(oop ref);
1027   static inline void clear_referent_raw(oop ref);
1028   static inline HeapWord* referent_addr_raw(oop ref);
1029   static inline oop next(oop ref);
1030   static inline void set_next(oop ref, oop value);
1031   static inline void set_next_raw(oop ref, oop value);
1032   static inline HeapWord* next_addr_raw(oop ref);
1033   static inline oop discovered(oop ref);
1034   static inline void set_discovered(oop ref, oop value);
1035   static inline void set_discovered_raw(oop ref, oop value);
1036   static inline HeapWord* discovered_addr_raw(oop ref);
1037   static bool is_referent_field(oop obj, ptrdiff_t offset);
1038   static inline bool is_final(oop ref);
1039   static inline bool is_phantom(oop ref);
1040   static inline bool is_weak(oop ref);
1041   static inline bool is_soft(oop ref);
1042 
1043   static int referent_offset()    { CHECK_INIT(_referent_offset); }
1044   static int queue_offset()       { CHECK_INIT(_queue_offset); }
1045   static int next_offset()        { CHECK_INIT(_next_offset); }
1046   static int discovered_offset()  { CHECK_INIT(_discovered_offset); }
1047 
1048   static void compute_offsets();
1049   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1050 };
1051 
1052 
1053 // Interface to java.lang.ref.SoftReference objects
1054 
1055 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
1056   static int _timestamp_offset;
1057   static int _static_clock_offset;
1058 
1059  public:
1060   // Accessors
1061   static jlong timestamp(oop ref);
1062 
1063   // Accessors for statics
1064   static jlong clock();
1065   static void set_clock(jlong value);
1066 
1067   static void compute_offsets();
1068   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1069 };
1070 
1071 // Interface to java.lang.invoke.MethodHandle objects
1072 
1073 class java_lang_invoke_MethodHandle: AllStatic {
1074   friend class JavaClasses;
1075 
1076  private:
1077   static int _type_offset;               // the MethodType of this MH
1078   static int _form_offset;               // the LambdaForm of this MH
1079 
1080   static void compute_offsets();
1081 
1082  public:
1083   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1084 
1085   // Accessors
1086   static oop            type(oop mh);
1087   static void       set_type(oop mh, oop mtype);
1088 
1089   static oop            form(oop mh);
1090   static void       set_form(oop mh, oop lform);
1091 
1092   // Testers
1093   static bool is_subclass(Klass* klass) {
1094     return klass->is_subclass_of(vmClasses::MethodHandle_klass());
1095   }
1096   static bool is_instance(oop obj);
1097 
1098   // Accessors for code generation:
1099   static int type_offset()             { CHECK_INIT(_type_offset); }
1100   static int form_offset()             { CHECK_INIT(_form_offset); }
1101 };
1102 
1103 // Interface to java.lang.invoke.DirectMethodHandle objects
1104 
1105 class java_lang_invoke_DirectMethodHandle: AllStatic {
1106   friend class JavaClasses;
1107 
1108  private:
1109   static int _member_offset;               // the MemberName of this DMH
1110 
1111   static void compute_offsets();
1112 
1113  public:
1114   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1115 
1116   // Accessors
1117   static oop  member(oop mh);
1118 
1119   // Testers
1120   static bool is_subclass(Klass* klass) {
1121     return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass());
1122   }
1123   static bool is_instance(oop obj);
1124 
1125   // Accessors for code generation:
1126   static int member_offset()           { CHECK_INIT(_member_offset); }
1127 };
1128 
1129 // Interface to java.lang.invoke.LambdaForm objects
1130 // (These are a private interface for managing adapter code generation.)
1131 
1132 class java_lang_invoke_LambdaForm: AllStatic {
1133   friend class JavaClasses;
1134 
1135  private:
1136   static int _vmentry_offset;  // type is MemberName
1137 
1138   static void compute_offsets();
1139 
1140  public:
1141   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1142 
1143   // Accessors
1144   static oop            vmentry(oop lform);
1145 
1146   // Testers
1147   static bool is_subclass(Klass* klass) {
1148     return vmClasses::LambdaForm_klass() != nullptr &&
1149       klass->is_subclass_of(vmClasses::LambdaForm_klass());
1150   }
1151   static bool is_instance(oop obj);
1152 
1153   // Accessors for code generation:
1154   static int vmentry_offset()          { CHECK_INIT(_vmentry_offset); }
1155 };
1156 
1157 // Interface to java.lang.invoke.NativeEntryPoint objects
1158 // (These are a private interface for managing adapter code generation.)
1159 
1160 class jdk_internal_foreign_abi_NativeEntryPoint: AllStatic {
1161   friend class JavaClasses;
1162 
1163  private:
1164   static int _method_type_offset;
1165   static int _downcall_stub_address_offset;
1166 
1167   static void compute_offsets();
1168 
1169  public:
1170   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1171 
1172   // Accessors
1173   static oop        method_type(oop entry);
1174   static jlong      downcall_stub_address(oop entry);
1175 
1176   // Testers
1177   static bool is_subclass(Klass* klass) {
1178     return vmClasses::NativeEntryPoint_klass() != nullptr &&
1179       klass->is_subclass_of(vmClasses::NativeEntryPoint_klass());
1180   }
1181   static bool is_instance(oop obj);
1182 
1183   // Accessors for code generation:
1184   static int method_type_offset_in_bytes()           { return _method_type_offset; }
1185   static int downcall_stub_address_offset_in_bytes() { return _downcall_stub_address_offset; }
1186 };
1187 
1188 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic {
1189   friend class JavaClasses;
1190 
1191  private:
1192   static int _inputStorage_offset;
1193   static int _outputStorage_offset;
1194   static int _volatileStorage_offset;
1195   static int _stackAlignment_offset;
1196   static int _shadowSpace_offset;
1197   static int _scratch1_offset;
1198   static int _scratch2_offset;
1199 
1200   static void compute_offsets();
1201 
1202  public:
1203   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1204 
1205   // Accessors
1206   static objArrayOop inputStorage(oop entry);
1207   static objArrayOop outputStorage(oop entry);
1208   static objArrayOop volatileStorage(oop entry);
1209   static jint        stackAlignment(oop entry);
1210   static jint        shadowSpace(oop entry);
1211   static oop         scratch1(oop entry);
1212   static oop         scratch2(oop entry);
1213 
1214   // Testers
1215   static bool is_subclass(Klass* klass) {
1216     return vmClasses::ABIDescriptor_klass() != nullptr &&
1217       klass->is_subclass_of(vmClasses::ABIDescriptor_klass());
1218   }
1219   static bool is_instance(oop obj);
1220 };
1221 
1222 class jdk_internal_foreign_abi_VMStorage: AllStatic {
1223   friend class JavaClasses;
1224 
1225  private:
1226   static int _type_offset;
1227   static int _indexOrOffset_offset;
1228   static int _segmentMaskOrSize_offset;
1229   static int _debugName_offset;
1230 
1231   static void compute_offsets();
1232 
1233  public:
1234   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1235 
1236   // Accessors
1237   static jbyte  type(oop entry);
1238   static jint   index_or_offset(oop entry);
1239   static jshort segment_mask_or_size(oop entry);
1240   static oop    debugName(oop entry);
1241 
1242   // Testers
1243   static bool is_subclass(Klass* klass) {
1244     return vmClasses::VMStorage_klass() != nullptr &&
1245       klass->is_subclass_of(vmClasses::VMStorage_klass());
1246   }
1247   static bool is_instance(oop obj);
1248 };
1249 
1250 class jdk_internal_foreign_abi_CallConv: AllStatic {
1251   friend class JavaClasses;
1252 
1253  private:
1254   static int _argRegs_offset;
1255   static int _retRegs_offset;
1256 
1257   static void compute_offsets();
1258 
1259  public:
1260   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1261 
1262   // Accessors
1263   static objArrayOop argRegs(oop entry);
1264   static objArrayOop retRegs(oop entry);
1265 
1266   // Testers
1267   static bool is_subclass(Klass* klass) {
1268     return vmClasses::CallConv_klass() != nullptr &&
1269       klass->is_subclass_of(vmClasses::CallConv_klass());
1270   }
1271   static bool is_instance(oop obj);
1272 };
1273 
1274 // Interface to java.lang.invoke.MemberName objects
1275 // (These are a private interface for Java code to query the class hierarchy.)
1276 
1277 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro)                                   \
1278   macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1279 
1280 class java_lang_invoke_ResolvedMethodName : AllStatic {
1281   friend class JavaClasses;
1282 
1283   static int _vmtarget_offset;
1284   static int _vmholder_offset;
1285 
1286   static void compute_offsets();
1287  public:
1288   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1289 
1290   static int vmtarget_offset() { CHECK_INIT(_vmtarget_offset); }
1291 
1292   static Method* vmtarget(oop resolved_method);
1293   static void set_vmtarget(oop resolved_method, Method* method);
1294 
1295   static void set_vmholder(oop resolved_method, oop holder);
1296 
1297   // find or create resolved member name
1298   static oop find_resolved_method(const methodHandle& m, TRAPS);
1299 
1300   static bool is_instance(oop resolved_method);
1301 };
1302 
1303 
1304 #define MEMBERNAME_INJECTED_FIELDS(macro)                               \
1305   macro(java_lang_invoke_MemberName, vmindex,  intptr_signature, false)
1306 
1307 
1308 class java_lang_invoke_MemberName: AllStatic {
1309   friend class JavaClasses;
1310 
1311  private:
1312   // From java.lang.invoke.MemberName:
1313   //    private Class<?>   clazz;       // class in which the method is defined
1314   //    private String     name;        // may be null if not yet materialized
1315   //    private Object     type;        // may be null if not yet materialized
1316   //    private int        flags;       // modifier bits; see reflect.Modifier
1317   //    private ResolvedMethodName method;    // holds VM-specific target value
1318   //    private intptr_t   vmindex;     // member index within class or interface
1319   static int _clazz_offset;
1320   static int _name_offset;
1321   static int _type_offset;
1322   static int _flags_offset;
1323   static int _method_offset;
1324   static int _vmindex_offset;
1325 
1326   static void compute_offsets();
1327 
1328  public:
1329   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1330   // Accessors
1331   static oop            clazz(oop mname);
1332   static void       set_clazz(oop mname, oop clazz);
1333 
1334   static oop            type(oop mname);
1335   static void       set_type(oop mname, oop type);
1336 
1337   static oop            name(oop mname);
1338   static void       set_name(oop mname, oop name);
1339 
1340   static int            flags(oop mname);
1341   static void       set_flags(oop mname, int flags);
1342 
1343   // Link through ResolvedMethodName field to get Method*
1344   static Method*        vmtarget(oop mname);
1345   static void       set_method(oop mname, oop method);
1346 
1347   static intptr_t       vmindex(oop mname);
1348   static void       set_vmindex(oop mname, intptr_t index);
1349 
1350   // Testers
1351   static bool is_subclass(Klass* klass) {
1352     return klass->is_subclass_of(vmClasses::MemberName_klass());
1353   }
1354   static bool is_instance(oop obj);
1355 
1356   static bool is_method(oop obj);
1357 
1358   // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1359   enum {
1360     MN_IS_METHOD             = 0x00010000, // method (not constructor)
1361     MN_IS_OBJECT_CONSTRUCTOR = 0x00020000, // constructor
1362     MN_IS_FIELD              = 0x00040000, // field
1363     MN_IS_TYPE               = 0x00080000, // nested type
1364     MN_CALLER_SENSITIVE      = 0x00100000, // @CallerSensitive annotation detected
1365     MN_TRUSTED_FINAL         = 0x00200000, // trusted final field
1366     MN_HIDDEN_MEMBER         = 0x00400000, // @Hidden annotation detected
1367     MN_NULL_RESTRICTED_FIELD = 0x00800000, // null-restricted field
1368     MN_REFERENCE_KIND_SHIFT  = 24, // refKind
1369     MN_REFERENCE_KIND_MASK   = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, // 4 bits
1370     MN_LAYOUT_SHIFT          = 28, // field layout
1371     MN_LAYOUT_MASK           = 0x70000000 >> MN_LAYOUT_SHIFT, // 3 bits
1372     MN_NESTMATE_CLASS        = 0x00000001,
1373     MN_HIDDEN_CLASS          = 0x00000002,
1374     MN_STRONG_LOADER_LINK    = 0x00000004,
1375     MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1376     // Lookup modes
1377     MN_MODULE_MODE           = 0x00000010,
1378     MN_UNCONDITIONAL_MODE    = 0x00000020,
1379     MN_TRUSTED_MODE          = -1
1380   };
1381 
1382   // Accessors for code generation:
1383   static int clazz_offset()   { CHECK_INIT(_clazz_offset); }
1384   static int type_offset()    { CHECK_INIT(_type_offset); }
1385   static int flags_offset()   { CHECK_INIT(_flags_offset); }
1386   static int method_offset()  { CHECK_INIT(_method_offset); }
1387   static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1388 };
1389 
1390 
1391 // Interface to java.lang.invoke.MethodType objects
1392 
1393 class java_lang_invoke_MethodType: AllStatic {
1394   friend class JavaClasses;
1395 
1396  private:
1397   static int _rtype_offset;
1398   static int _ptypes_offset;
1399 
1400   static void compute_offsets();
1401 
1402  public:
1403   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1404   // Accessors
1405   static oop            rtype(oop mt);
1406   static objArrayOop    ptypes(oop mt);
1407 
1408   static oop            ptype(oop mt, int index);
1409   static int            ptype_count(oop mt);
1410 
1411   static int            ptype_slot_count(oop mt);  // extra counts for long/double
1412   static int            rtype_slot_count(oop mt);  // extra counts for long/double
1413 
1414   static Symbol*        as_signature(oop mt, bool intern_if_not_found);
1415   static void           print_signature(oop mt, outputStream* st);
1416 
1417   static bool is_instance(oop obj);
1418 
1419   static bool equals(oop mt1, oop mt2);
1420 
1421   // Accessors for code generation:
1422   static int rtype_offset()  { CHECK_INIT(_rtype_offset); }
1423   static int ptypes_offset() { CHECK_INIT(_ptypes_offset); }
1424 };
1425 
1426 
1427 // Interface to java.lang.invoke.CallSite objects
1428 #define CALLSITE_INJECTED_FIELDS(macro) \
1429   macro(java_lang_invoke_CallSite, vmdependencies, intptr_signature, false) \
1430   macro(java_lang_invoke_CallSite, last_cleanup, long_signature, false)
1431 
1432 class java_lang_invoke_CallSite: AllStatic {
1433   friend class JavaClasses;
1434 
1435 private:
1436   static int _target_offset;
1437   static int _vmdependencies_offset;
1438   static int _last_cleanup_offset;
1439 
1440   static void compute_offsets();
1441 
1442 public:
1443   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1444   // Accessors
1445   static oop              target(          oop site);
1446   static void         set_target(          oop site, oop target);
1447   static void         set_target_volatile( oop site, oop target);
1448 
1449   static DependencyContext vmdependencies(oop call_site);
1450 
1451   // Testers
1452   static bool is_subclass(Klass* klass) {
1453     return klass->is_subclass_of(vmClasses::CallSite_klass());
1454   }
1455   static bool is_instance(oop obj);
1456 
1457   // Accessors for code generation:
1458   static int target_offset()  { CHECK_INIT(_target_offset); }
1459 };
1460 
1461 // Interface to java.lang.invoke.ConstantCallSite objects
1462 
1463 class java_lang_invoke_ConstantCallSite: AllStatic {
1464   friend class JavaClasses;
1465 
1466 private:
1467   static int _is_frozen_offset;
1468 
1469   static void compute_offsets();
1470 
1471 public:
1472   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1473   // Accessors
1474   static jboolean is_frozen(oop site);
1475 
1476   // Testers
1477   static bool is_subclass(Klass* klass) {
1478     return klass->is_subclass_of(vmClasses::ConstantCallSite_klass());
1479   }
1480   static bool is_instance(oop obj);
1481 };
1482 
1483 // Interface to java.lang.ClassLoader objects
1484 
1485 #define CLASSLOADER_INJECTED_FIELDS(macro)                            \
1486   macro(java_lang_ClassLoader, loader_data,  intptr_signature, false)
1487 
1488 class java_lang_ClassLoader : AllStatic {
1489  private:
1490   static int _loader_data_offset;
1491   static int _parent_offset;
1492   static int _parallelCapable_offset;
1493   static int _name_offset;
1494   static int _nameAndId_offset;
1495   static int _unnamedModule_offset;
1496 
1497   static void compute_offsets();
1498 
1499  public:
1500   // Support for CDS
1501   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1502   static int loader_data_offset() { return  _loader_data_offset; }
1503 
1504   static ClassLoaderData* loader_data_acquire(oop loader);
1505   static ClassLoaderData* loader_data(oop loader);
1506   static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1507 
1508   static oop parent(oop loader);
1509   static oop parent_no_keepalive(oop loader);
1510   static oop name(oop loader);
1511   static oop nameAndId(oop loader);
1512   static bool isAncestor(oop loader, oop cl);
1513 
1514   // Support for parallelCapable field
1515   static bool parallelCapable(oop the_class_mirror);
1516 
1517   static bool is_trusted_loader(oop loader);
1518 
1519   // Testers
1520   static bool is_subclass(Klass* klass) {
1521     return klass->is_subclass_of(vmClasses::ClassLoader_klass());
1522   }
1523   static bool is_instance(oop obj);
1524 
1525   static oop unnamedModule(oop loader);
1526 
1527   // Debugging
1528   friend class JavaClasses;
1529 };
1530 
1531 
1532 // Interface to java.lang.System objects
1533 
1534 class java_lang_System : AllStatic {
1535  private:
1536   static int _static_in_offset;
1537   static int _static_out_offset;
1538   static int _static_err_offset;
1539 
1540  public:
1541   static int  in_offset() { CHECK_INIT(_static_in_offset); }
1542   static int out_offset() { CHECK_INIT(_static_out_offset); }
1543   static int err_offset() { CHECK_INIT(_static_err_offset); }
1544 
1545   static void compute_offsets();
1546   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1547 
1548   // Debugging
1549   friend class JavaClasses;
1550 };
1551 
1552 
1553 // Interface to java.lang.StackTraceElement objects
1554 
1555 class java_lang_StackTraceElement: AllStatic {
1556  private:
1557   static int _declaringClassObject_offset;
1558   static int _classLoaderName_offset;
1559   static int _moduleName_offset;
1560   static int _moduleVersion_offset;
1561   static int _declaringClass_offset;
1562   static int _methodName_offset;
1563   static int _fileName_offset;
1564   static int _lineNumber_offset;
1565 
1566   // Setters
1567   static void set_classLoaderName(oop element, oop value);
1568   static void set_moduleName(oop element, oop value);
1569   static void set_moduleVersion(oop element, oop value);
1570   static void set_declaringClass(oop element, oop value);
1571   static void set_methodName(oop element, oop value);
1572   static void set_fileName(oop element, oop value);
1573   static void set_lineNumber(oop element, int value);
1574   static void set_declaringClassObject(oop element, oop value);
1575 
1576   static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1577                                    const methodHandle& method, int bci,
1578                                    Symbol*& source, oop& source_file, int& line_number, TRAPS);
1579 
1580  public:
1581   // Create an instance of StackTraceElement
1582   static oop create(const methodHandle& method, int bci, TRAPS);
1583 
1584   static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1585                       int version, int bci, Symbol* name, TRAPS);
1586 
1587   static void compute_offsets();
1588   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1589 
1590 #if INCLUDE_JVMCI
1591   static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1592 #endif
1593 
1594   // Debugging
1595   friend class JavaClasses;
1596 };
1597 
1598 
1599 class Backtrace: AllStatic {
1600  public:
1601   // Helper backtrace functions to store bci|version together.
1602   static int merge_bci_and_version(int bci, int version);
1603   static int merge_mid_and_cpref(int mid, int cpref);
1604   static int bci_at(unsigned int merged);
1605   static int version_at(unsigned int merged);
1606   static int mid_at(unsigned int merged);
1607   static int cpref_at(unsigned int merged);
1608   static int get_line_number(Method* method, int bci);
1609   static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1610 
1611   // Debugging
1612   friend class JavaClasses;
1613 };
1614 
1615 class java_lang_ClassFrameInfo: AllStatic {
1616 private:
1617   static int _classOrMemberName_offset;
1618   static int _flags_offset;
1619 
1620 public:
1621   static oop  classOrMemberName(oop info);
1622   static int  flags(oop info);
1623 
1624   // Setters
1625   static void init_class(Handle stackFrame, const methodHandle& m);
1626   static void init_method(Handle stackFrame, const methodHandle& m, TRAPS);
1627 
1628   static void compute_offsets();
1629   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1630 
1631   // Debugging
1632   friend class JavaClasses;
1633 };
1634 
1635 // Interface to java.lang.StackFrameInfo objects
1636 
1637 #define STACKFRAMEINFO_INJECTED_FIELDS(macro)                      \
1638   macro(java_lang_StackFrameInfo, version, short_signature, false)
1639 
1640 class java_lang_StackFrameInfo: AllStatic {
1641 private:
1642   static int _type_offset;
1643   static int _name_offset;
1644   static int _bci_offset;
1645   static int _version_offset;
1646   static int _contScope_offset;
1647 
1648 public:
1649   // Getters
1650   static oop name(oop info);
1651   static oop type(oop info);
1652   static Method* get_method(oop info);
1653 
1654   // Setters
1655   static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS);
1656   static void set_name(oop info, oop value);
1657   static void set_type(oop info, oop value);
1658   static void set_bci(oop info, int value);
1659 
1660   static void set_version(oop info, short value);
1661   static void set_contScope(oop info, oop value);
1662 
1663   static void compute_offsets();
1664   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1665 
1666   static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1667 
1668   // Debugging
1669   friend class JavaClasses;
1670 };
1671 
1672 class java_lang_LiveStackFrameInfo: AllStatic {
1673  private:
1674   static int _monitors_offset;
1675   static int _locals_offset;
1676   static int _operands_offset;
1677   static int _mode_offset;
1678 
1679  public:
1680   static void set_monitors(oop info, oop value);
1681   static void set_locals(oop info, oop value);
1682   static void set_operands(oop info, oop value);
1683   static void set_mode(oop info, int value);
1684 
1685   static void compute_offsets();
1686   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1687 
1688   // Debugging
1689   friend class JavaClasses;
1690 };
1691 
1692 // Interface to java.lang.reflect.RecordComponent objects
1693 
1694 class java_lang_reflect_RecordComponent: AllStatic {
1695  private:
1696   static int _clazz_offset;
1697   static int _name_offset;
1698   static int _type_offset;
1699   static int _accessor_offset;
1700   static int _signature_offset;
1701   static int _annotations_offset;
1702   static int _typeAnnotations_offset;
1703 
1704   // Setters
1705   static void set_clazz(oop element, oop value);
1706   static void set_name(oop element, oop value);
1707   static void set_type(oop element, oop value);
1708   static void set_accessor(oop element, oop value);
1709   static void set_signature(oop element, oop value);
1710   static void set_annotations(oop element, oop value);
1711   static void set_typeAnnotations(oop element, oop value);
1712 
1713  public:
1714   // Create an instance of RecordComponent
1715   static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1716 
1717   static void compute_offsets();
1718   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1719 
1720   // Debugging
1721   friend class JavaClasses;
1722 };
1723 
1724 
1725 // Interface to java.lang.AssertionStatusDirectives objects
1726 
1727 class java_lang_AssertionStatusDirectives: AllStatic {
1728  private:
1729   static int _classes_offset;
1730   static int _classEnabled_offset;
1731   static int _packages_offset;
1732   static int _packageEnabled_offset;
1733   static int _deflt_offset;
1734 
1735  public:
1736   // Setters
1737   static void set_classes(oop obj, oop val);
1738   static void set_classEnabled(oop obj, oop val);
1739   static void set_packages(oop obj, oop val);
1740   static void set_packageEnabled(oop obj, oop val);
1741   static void set_deflt(oop obj, bool val);
1742 
1743   static void compute_offsets();
1744   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1745 
1746   // Debugging
1747   friend class JavaClasses;
1748 };
1749 
1750 
1751 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1752  private:
1753   static int  _owner_offset;
1754  public:
1755   static void compute_offsets();
1756   static oop  get_owner_threadObj(oop obj);
1757   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1758 };
1759 
1760  // Interface to jdk.internal.misc.UnsafeConsants
1761 
1762 class jdk_internal_misc_UnsafeConstants : AllStatic {
1763  public:
1764   static void set_unsafe_constants();
1765   static void compute_offsets() { }
1766   static void serialize_offsets(SerializeClosure* f) { }
1767 };
1768 
1769 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects
1770 
1771 class vector_VectorPayload : AllStatic {
1772  private:
1773   static int _payload_offset;
1774  public:
1775   static void set_payload(oop o, oop val);
1776 
1777   static void compute_offsets();
1778   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1779 
1780   // Testers
1781   static bool is_subclass(Klass* klass) {
1782     return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass());
1783   }
1784   static bool is_instance(oop obj);
1785 };
1786 
1787 class java_lang_Integer : AllStatic {
1788 public:
1789   static jint value(oop obj);
1790 };
1791 
1792 class java_lang_Long : AllStatic {
1793 public:
1794   static jlong value(oop obj);
1795 };
1796 
1797 class java_lang_Character : AllStatic {
1798 public:
1799   static jchar value(oop obj);
1800 };
1801 
1802 class java_lang_Short : AllStatic {
1803 public:
1804   static jshort value(oop obj);
1805 };
1806 
1807 class java_lang_Byte : AllStatic {
1808 public:
1809   static jbyte value(oop obj);
1810 };
1811 
1812 class java_lang_Boolean : AllStatic {
1813  private:
1814   static int _static_TRUE_offset;
1815   static int _static_FALSE_offset;
1816  public:
1817   static Symbol* symbol();
1818   static void compute_offsets(InstanceKlass* k);
1819   static oop  get_TRUE(InstanceKlass *k);
1820   static oop  get_FALSE(InstanceKlass *k);
1821   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1822   static jboolean value(oop obj);
1823 };
1824 
1825 class java_lang_Integer_IntegerCache : AllStatic {
1826  private:
1827   static int _static_cache_offset;
1828  public:
1829   static Symbol* symbol();
1830   static void compute_offsets(InstanceKlass* k);
1831   static objArrayOop  cache(InstanceKlass *k);
1832   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1833 };
1834 
1835 class java_lang_Long_LongCache : 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_Character_CharacterCache : 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_Short_ShortCache : 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_Byte_ByteCache : 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 // Interface to java.lang.InternalError objects
1876 
1877 #define INTERNALERROR_INJECTED_FIELDS(macro)                      \
1878   macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1879 
1880 class java_lang_InternalError : AllStatic {
1881  private:
1882   static int _during_unsafe_access_offset;
1883  public:
1884   static jboolean during_unsafe_access(oop internal_error);
1885   static void set_during_unsafe_access(oop internal_error);
1886   static void compute_offsets();
1887   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1888 };
1889 
1890 // Use to declare fields that need to be injected into Java classes
1891 // for the JVM to use.  The name_index and signature_index are
1892 // declared in vmSymbols.  The may_be_java flag is used to declare
1893 // fields that might already exist in Java but should be injected if
1894 // they don't.  Otherwise the field is unconditionally injected and
1895 // the JVM uses the injected one.  This is to ensure that name
1896 // collisions don't occur.  In general may_be_java should be false
1897 // unless there's a good reason.
1898 
1899 class InjectedField {
1900  public:
1901   const vmClassID klass_id;
1902   const vmSymbolID name_index;
1903   const vmSymbolID signature_index;
1904   const bool           may_be_java;
1905 
1906 
1907   Klass* klass() const      { return vmClasses::klass_at(klass_id); }
1908   Symbol* name() const      { return lookup_symbol(name_index); }
1909   Symbol* signature() const { return lookup_symbol(signature_index); }
1910 
1911   int compute_offset();
1912 
1913   // Find the Symbol for this index
1914   static Symbol* lookup_symbol(vmSymbolID symbol_index) {
1915     return Symbol::vm_symbol_at(symbol_index);
1916   }
1917 };
1918 
1919 
1920 // Interface to hard-coded offset checking
1921 
1922 enum class InjectedFieldID : int;
1923 
1924 class JavaClasses : AllStatic {
1925  private:
1926 
1927   static InjectedField _injected_fields[];
1928 
1929   static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1930  public:
1931 
1932   static int compute_injected_offset(InjectedFieldID id);
1933 
1934   static void compute_offsets();
1935   static void check_offsets() PRODUCT_RETURN;
1936   static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1937   static InjectedField* get_injected(Symbol* class_name, int* field_count);
1938   static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1939 
1940   static void compute_offset(int &dest_offset,
1941                              InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
1942                              bool is_static = false);
1943   static void compute_offset(int& dest_offset, InstanceKlass* ik,
1944                              const char* name_string, Symbol* signature_symbol,
1945                              bool is_static = false);
1946 };
1947 
1948 #undef CHECK_INIT
1949 
1950 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP