1 /*
   2  * Copyright (c) 1997, 2019, 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/systemDictionary.hpp"
  29 #include "jvmtifiles/jvmti.h"
  30 #include "oops/oop.hpp"
  31 #include "runtime/os.hpp"
  32 
  33 class RecordComponent;
  34 
  35 // Interface for manipulating the basic Java classes.
  36 //
  37 // All dependencies on layout of actual Java classes should be kept here.
  38 // If the layout of any of the classes above changes the offsets must be adjusted.
  39 //
  40 // For most classes we hardwire the offsets for performance reasons. In certain
  41 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
  42 // startup since the layout here differs between JDK1.2 and JDK1.3.
  43 //
  44 // Note that fields (static and non-static) are arranged with oops before non-oops
  45 // on a per class basis. The offsets below have to reflect this ordering.
  46 //
  47 // When editing the layouts please update the check_offset verification code
  48 // correspondingly. The names in the enums must be identical to the actual field
  49 // names in order for the verification code to work.
  50 
  51 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
  52   f(java_lang_Class) \
  53   f(java_lang_String) \
  54   //end
  55 
  56 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
  57   f(java_lang_System) \
  58   f(java_lang_ClassLoader) \
  59   f(java_lang_Throwable) \
  60   f(java_lang_Thread) \
  61   f(java_lang_ThreadGroup) \
  62   f(java_lang_AssertionStatusDirectives) \
  63   f(java_lang_ref_SoftReference) \
  64   f(java_lang_invoke_MethodHandle) \
  65   f(java_lang_invoke_DirectMethodHandle) \
  66   f(java_lang_invoke_MemberName) \
  67   f(java_lang_invoke_ResolvedMethodName) \
  68   f(java_lang_invoke_LambdaForm) \
  69   f(java_lang_invoke_MethodType) \
  70   f(java_lang_invoke_CallSite) \
  71   f(java_lang_invoke_ConstantCallSite) \
  72   f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
  73   f(java_security_AccessControlContext) \
  74   f(java_lang_reflect_AccessibleObject) \
  75   f(java_lang_reflect_Method) \
  76   f(java_lang_reflect_Constructor) \
  77   f(java_lang_reflect_Field) \
  78   f(java_lang_reflect_RecordComponent) \
  79   f(java_nio_Buffer) \
  80   f(reflect_ConstantPool) \
  81   f(reflect_UnsafeStaticFieldAccessorImpl) \
  82   f(java_lang_reflect_Parameter) \
  83   f(java_lang_Module) \
  84   f(java_lang_StackTraceElement) \
  85   f(java_lang_StackFrameInfo) \
  86   f(java_lang_LiveStackFrameInfo) \
  87   f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
  88   f(jdk_internal_misc_UnsafeConstants) \
  89   //end
  90 
  91 #define BASIC_JAVA_CLASSES_DO(f) \
  92         BASIC_JAVA_CLASSES_DO_PART1(f) \
  93         BASIC_JAVA_CLASSES_DO_PART2(f)
  94 
  95 // Interface to java.lang.Object objects
  96 
  97 class java_lang_Object : AllStatic {
  98  public:
  99   static void register_natives(TRAPS);
 100 };
 101 
 102 // Interface to java.lang.String objects
 103 
 104 class java_lang_String : AllStatic {
 105  private:
 106   static int value_offset;
 107   static int hash_offset;
 108   static int hashIsZero_offset;
 109   static int coder_offset;
 110 
 111   static bool initialized;
 112 
 113   static Handle basic_create(int length, bool byte_arr, TRAPS);
 114 
 115   static inline void set_coder(oop string, jbyte coder);
 116 
 117  public:
 118 
 119   // Coders
 120   enum Coder {
 121     CODER_LATIN1 =  0,
 122     CODER_UTF16  =  1
 123   };
 124 
 125   static void compute_offsets();
 126   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 127 
 128   // Instance creation
 129   static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
 130   static oop    create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
 131   static Handle create_from_str(const char* utf8_str, TRAPS);
 132   static oop    create_oop_from_str(const char* utf8_str, TRAPS);
 133   static Handle create_from_symbol(Symbol* symbol, TRAPS);
 134   static Handle create_from_platform_dependent_str(const char* str, TRAPS);
 135   static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
 136 
 137   static void set_compact_strings(bool value);
 138 
 139   static int value_offset_in_bytes()  {
 140     assert(initialized && (value_offset > 0), "Must be initialized");
 141     return value_offset;
 142   }
 143   static int hash_offset_in_bytes()   {
 144     assert(initialized && (hash_offset > 0), "Must be initialized");
 145     return hash_offset;
 146   }
 147   static int hashIsZero_offset_in_bytes()   {
 148     assert(initialized && (hashIsZero_offset > 0), "Must be initialized");
 149     return hashIsZero_offset;
 150   }
 151   static int coder_offset_in_bytes()   {
 152     assert(initialized && (coder_offset > 0), "Must be initialized");
 153     return coder_offset;
 154   }
 155 
 156   static inline void set_value_raw(oop string, typeArrayOop buffer);
 157   static inline void set_value(oop string, typeArrayOop buffer);
 158 
 159   // Accessors
 160   static inline typeArrayOop value(oop java_string);
 161   static inline typeArrayOop value_no_keepalive(oop java_string);
 162   static inline bool hash_is_set(oop string);
 163   static inline bool is_latin1(oop java_string);
 164   static inline int length(oop java_string);
 165   static inline int length(oop java_string, typeArrayOop string_value);
 166   static int utf8_length(oop java_string);
 167   static int utf8_length(oop java_string, typeArrayOop string_value);
 168 
 169   // String converters
 170   static char*  as_utf8_string(oop java_string);
 171   static char*  as_utf8_string(oop java_string, char* buf, int buflen);
 172   static char*  as_utf8_string(oop java_string, int start, int len);
 173   static char*  as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
 174   static char*  as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
 175   static char*  as_platform_dependent_str(Handle java_string, TRAPS);
 176   static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
 177   // produce an ascii string with all other values quoted using \u####
 178   static char*  as_quoted_ascii(oop java_string);
 179 
 180   // Compute the hash value for a java.lang.String object which would
 181   // contain the characters passed in.
 182   //
 183   // As the hash value used by the String object itself, in
 184   // String.hashCode().  This value is normally calculated in Java code
 185   // in the String.hashCode method(), but is precomputed for String
 186   // objects in the shared archive file.
 187   // hash P(31) from Kernighan & Ritchie
 188   //
 189   // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
 190   static unsigned int hash_code(const jchar* s, int len) {
 191     unsigned int h = 0;
 192     while (len-- > 0) {
 193       h = 31*h + (unsigned int) *s;
 194       s++;
 195     }
 196     return h;
 197   }
 198 
 199   static unsigned int hash_code(const jbyte* s, int len) {
 200     unsigned int h = 0;
 201     while (len-- > 0) {
 202       h = 31*h + (((unsigned int) *s) & 0xFF);
 203       s++;
 204     }
 205     return h;
 206   }
 207 
 208   static unsigned int hash_code(oop java_string);
 209 
 210   static bool equals(oop java_string, const jchar* chars, int len);
 211   static bool equals(oop str1, oop str2);
 212   static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
 213 
 214   // Conversion between '.' and '/' formats
 215   static Handle externalize_classname(Handle java_string, TRAPS) {
 216     return char_converter(java_string, JVM_SIGNATURE_SLASH, JVM_SIGNATURE_DOT, THREAD);
 217   }
 218 
 219   // Conversion
 220   static Symbol* as_symbol(oop java_string);
 221   static Symbol* as_symbol_or_null(oop java_string);
 222 
 223   // Testers
 224   static bool is_instance(oop obj);
 225   static inline bool is_instance_inlined(oop obj);
 226 
 227   // Debugging
 228   static void print(oop java_string, outputStream* st);
 229   friend class JavaClasses;
 230   friend class StringTable;
 231 };
 232 
 233 
 234 // Interface to java.lang.Class objects
 235 
 236 #define CLASS_INJECTED_FIELDS(macro)                                       \
 237   macro(java_lang_Class, klass,                  intptr_signature,  false) \
 238   macro(java_lang_Class, array_klass,            intptr_signature,  false) \
 239   macro(java_lang_Class, oop_size,               int_signature,     false) \
 240   macro(java_lang_Class, static_oop_field_count, int_signature,     false) \
 241   macro(java_lang_Class, protection_domain,      object_signature,  false) \
 242   macro(java_lang_Class, signers,                object_signature,  false) \
 243   macro(java_lang_Class, source_file,            object_signature,  false) \
 244   macro(java_lang_Class, classData,              object_signature,  false)
 245 
 246 class java_lang_Class : AllStatic {
 247   friend class VMStructs;
 248   friend class JVMCIVMStructs;
 249 
 250  private:
 251   // The fake offsets are added by the class loader when java.lang.Class is loaded
 252 
 253   static int _klass_offset;
 254   static int _array_klass_offset;
 255 
 256   static int _oop_size_offset;
 257   static int _static_oop_field_count_offset;
 258 
 259   static int _protection_domain_offset;
 260   static int _init_lock_offset;
 261   static int _signers_offset;
 262   static int _class_loader_offset;
 263   static int _module_offset;
 264   static int _component_mirror_offset;
 265   static int _name_offset;
 266   static int _source_file_offset;
 267   static int _classData_offset;
 268 
 269   static bool offsets_computed;
 270   static int classRedefinedCount_offset;
 271 
 272   static GrowableArray<Klass*>* _fixup_mirror_list;
 273   static GrowableArray<Klass*>* _fixup_module_field_list;
 274 
 275   static void set_init_lock(oop java_class, oop init_lock);
 276   static void set_protection_domain(oop java_class, oop protection_domain);
 277   static void set_class_loader(oop java_class, oop class_loader);
 278   static void set_component_mirror(oop java_class, oop comp_mirror);
 279   static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
 280                                        Handle classData, TRAPS);
 281   static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
 282  public:
 283   static void allocate_fixup_lists();
 284   static void compute_offsets();
 285 
 286   // Instance creation
 287   static void create_mirror(Klass* k, Handle class_loader, Handle module,
 288                             Handle protection_domain, Handle classData, TRAPS);
 289   static void fixup_mirror(Klass* k, TRAPS);
 290   static oop  create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
 291   static void update_archived_primitive_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
 292   static void update_archived_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
 293 
 294   // Archiving
 295   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 296   static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
 297   static oop  archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
 298   static oop  process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
 299                                       NOT_CDS_JAVA_HEAP_RETURN_(NULL);
 300   static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
 301                                       Handle protection_domain,
 302                                       TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
 303 
 304   static void fixup_module_field(Klass* k, Handle module);
 305 
 306   // Conversion
 307   static Klass* as_Klass(oop java_class);
 308   static Klass* as_Klass_raw(oop java_class);
 309   static void set_klass(oop java_class, Klass* klass);
 310   static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
 311   static Symbol* as_signature(oop java_class, bool intern_if_not_found);
 312   static void print_signature(oop java_class, outputStream *st);
 313   static const char* as_external_name(oop java_class);
 314   // Testing
 315   static bool is_instance(oop obj);
 316 
 317   static bool is_primitive(oop java_class);
 318   static BasicType primitive_type(oop java_class);
 319   static oop primitive_mirror(BasicType t);
 320   // JVM_NewArray support
 321   static Klass* array_klass_acquire(oop java_class);
 322   static void release_set_array_klass(oop java_class, Klass* klass);
 323   // compiler support for class operations
 324   static int klass_offset_in_bytes()                { return _klass_offset; }
 325   static int array_klass_offset_in_bytes()          { return _array_klass_offset; }
 326   // Support for classRedefinedCount field
 327   static int classRedefinedCount(oop the_class_mirror);
 328   static void set_classRedefinedCount(oop the_class_mirror, int value);
 329 
 330   // Support for embedded per-class oops
 331   static oop  protection_domain(oop java_class);
 332   static oop  init_lock(oop java_class);
 333   static oop  component_mirror(oop java_class);
 334   static objArrayOop  signers(oop java_class);
 335   static void set_signers(oop java_class, objArrayOop signers);
 336   static oop  class_data(oop java_class);
 337   static void set_class_data(oop java_class, oop classData);
 338 
 339   static oop class_loader(oop java_class);
 340   static void set_module(oop java_class, oop module);
 341   static oop module(oop java_class);
 342 
 343   static oop name(Handle java_class, TRAPS);
 344 
 345   static oop source_file(oop java_class);
 346   static void set_source_file(oop java_class, oop source_file);
 347 
 348   static int oop_size(oop java_class);
 349   static int oop_size_raw(oop java_class);
 350   static void set_oop_size(HeapWord* java_class, int size);
 351   static int static_oop_field_count(oop java_class);
 352   static int static_oop_field_count_raw(oop java_class);
 353   static void set_static_oop_field_count(oop java_class, int size);
 354 
 355   static GrowableArray<Klass*>* fixup_mirror_list() {
 356     return _fixup_mirror_list;
 357   }
 358   static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
 359     _fixup_mirror_list = v;
 360   }
 361 
 362   static GrowableArray<Klass*>* fixup_module_field_list() {
 363     return _fixup_module_field_list;
 364   }
 365   static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
 366     _fixup_module_field_list = v;
 367   }
 368 
 369   // Debugging
 370   friend class JavaClasses;
 371   friend class InstanceKlass;   // verification code accesses offsets
 372   friend class ClassFileParser; // access to number_of_fake_fields
 373 };
 374 
 375 // Interface to java.lang.Thread objects
 376 
 377 class java_lang_Thread : AllStatic {
 378  private:
 379   // Note that for this class the layout changed between JDK1.2 and JDK1.3,
 380   // so we compute the offsets at startup rather than hard-wiring them.
 381   static int _name_offset;
 382   static int _group_offset;
 383   static int _contextClassLoader_offset;
 384   static int _inheritedAccessControlContext_offset;
 385   static int _priority_offset;
 386   static int _eetop_offset;
 387   static int _interrupted_offset;
 388   static int _daemon_offset;
 389   static int _stillborn_offset;
 390   static int _stackSize_offset;
 391   static int _tid_offset;
 392   static int _thread_status_offset;
 393   static int _park_blocker_offset;
 394 
 395   static void compute_offsets();
 396 
 397  public:
 398   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 399 
 400   // Instance creation
 401   static oop create();
 402   // Returns the JavaThread associated with the thread obj
 403   static JavaThread* thread(oop java_thread);
 404   // Set JavaThread for instance
 405   static void set_thread(oop java_thread, JavaThread* thread);
 406   // Interrupted status
 407   static bool interrupted(oop java_thread);
 408   static void set_interrupted(oop java_thread, bool val);
 409   // Name
 410   static oop name(oop java_thread);
 411   static void set_name(oop java_thread, oop name);
 412   // Priority
 413   static ThreadPriority priority(oop java_thread);
 414   static void set_priority(oop java_thread, ThreadPriority priority);
 415   // Thread group
 416   static oop  threadGroup(oop java_thread);
 417   // Stillborn
 418   static bool is_stillborn(oop java_thread);
 419   static void set_stillborn(oop java_thread);
 420   // Alive (NOTE: this is not really a field, but provides the correct
 421   // definition without doing a Java call)
 422   static bool is_alive(oop java_thread);
 423   // Daemon
 424   static bool is_daemon(oop java_thread);
 425   static void set_daemon(oop java_thread);
 426   // Context ClassLoader
 427   static oop context_class_loader(oop java_thread);
 428   // Control context
 429   static oop inherited_access_control_context(oop java_thread);
 430   // Stack size hint
 431   static jlong stackSize(oop java_thread);
 432   // Thread ID
 433   static jlong thread_id(oop java_thread);
 434 
 435   // Blocker object responsible for thread parking
 436   static oop park_blocker(oop java_thread);
 437 
 438   // Java Thread Status for JVMTI and M&M use.
 439   // This thread status info is saved in threadStatus field of
 440   // java.lang.Thread java class.
 441   enum ThreadStatus {
 442     NEW                      = 0,
 443     RUNNABLE                 = JVMTI_THREAD_STATE_ALIVE +          // runnable / running
 444                                JVMTI_THREAD_STATE_RUNNABLE,
 445     SLEEPING                 = JVMTI_THREAD_STATE_ALIVE +          // Thread.sleep()
 446                                JVMTI_THREAD_STATE_WAITING +
 447                                JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
 448                                JVMTI_THREAD_STATE_SLEEPING,
 449     IN_OBJECT_WAIT           = JVMTI_THREAD_STATE_ALIVE +          // Object.wait()
 450                                JVMTI_THREAD_STATE_WAITING +
 451                                JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
 452                                JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
 453     IN_OBJECT_WAIT_TIMED     = JVMTI_THREAD_STATE_ALIVE +          // Object.wait(long)
 454                                JVMTI_THREAD_STATE_WAITING +
 455                                JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
 456                                JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
 457     PARKED                   = JVMTI_THREAD_STATE_ALIVE +          // LockSupport.park()
 458                                JVMTI_THREAD_STATE_WAITING +
 459                                JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
 460                                JVMTI_THREAD_STATE_PARKED,
 461     PARKED_TIMED             = JVMTI_THREAD_STATE_ALIVE +          // LockSupport.park(long)
 462                                JVMTI_THREAD_STATE_WAITING +
 463                                JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
 464                                JVMTI_THREAD_STATE_PARKED,
 465     BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE +          // (re-)entering a synchronization block
 466                                JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
 467     TERMINATED               = JVMTI_THREAD_STATE_TERMINATED
 468   };
 469   // Write thread status info to threadStatus field of java.lang.Thread.
 470   static void set_thread_status(oop java_thread_oop, ThreadStatus status);
 471   // Read thread status info from threadStatus field of java.lang.Thread.
 472   static ThreadStatus get_thread_status(oop java_thread_oop);
 473 
 474   static const char*  thread_status_name(oop java_thread_oop);
 475 
 476   // Debugging
 477   friend class JavaClasses;
 478 };
 479 
 480 // Interface to java.lang.ThreadGroup objects
 481 
 482 class java_lang_ThreadGroup : AllStatic {
 483  private:
 484   static int _parent_offset;
 485   static int _name_offset;
 486   static int _threads_offset;
 487   static int _groups_offset;
 488   static int _maxPriority_offset;
 489   static int _destroyed_offset;
 490   static int _daemon_offset;
 491   static int _nthreads_offset;
 492   static int _ngroups_offset;
 493 
 494   static void compute_offsets();
 495 
 496  public:
 497   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 498 
 499   // parent ThreadGroup
 500   static oop  parent(oop java_thread_group);
 501   // name
 502   static const char* name(oop java_thread_group);
 503   // ("name as oop" accessor is not necessary)
 504   // Number of threads in group
 505   static int nthreads(oop java_thread_group);
 506   // threads
 507   static objArrayOop threads(oop java_thread_group);
 508   // Number of threads in group
 509   static int ngroups(oop java_thread_group);
 510   // groups
 511   static objArrayOop groups(oop java_thread_group);
 512   // maxPriority in group
 513   static ThreadPriority maxPriority(oop java_thread_group);
 514   // Destroyed
 515   static bool is_destroyed(oop java_thread_group);
 516   // Daemon
 517   static bool is_daemon(oop java_thread_group);
 518   // Debugging
 519   friend class JavaClasses;
 520 };
 521 
 522 
 523 
 524 // Interface to java.lang.Throwable objects
 525 
 526 class java_lang_Throwable: AllStatic {
 527   friend class BacktraceBuilder;
 528   friend class BacktraceIterator;
 529 
 530  private:
 531   // Offsets
 532   enum {
 533     hc_backtrace_offset     =  0,
 534     hc_detailMessage_offset =  1,
 535     hc_cause_offset         =  2,  // New since 1.4
 536     hc_stackTrace_offset    =  3   // New since 1.4
 537   };
 538   // Trace constants
 539   enum {
 540     trace_methods_offset = 0,
 541     trace_bcis_offset    = 1,
 542     trace_mirrors_offset = 2,
 543     trace_names_offset   = 3,
 544     trace_next_offset    = 4,
 545     trace_hidden_offset  = 5,
 546     trace_size           = 6,
 547     trace_chunk_size     = 32
 548   };
 549 
 550   static int backtrace_offset;
 551   static int detailMessage_offset;
 552   static int stackTrace_offset;
 553   static int depth_offset;
 554   static int static_unassigned_stacktrace_offset;
 555 
 556   // StackTrace (programmatic access, new since 1.4)
 557   static void clear_stacktrace(oop throwable);
 558   // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
 559   static void set_stacktrace(oop throwable, oop st_element_array);
 560   static oop unassigned_stacktrace();
 561 
 562  public:
 563   // Backtrace
 564   static oop backtrace(oop throwable);
 565   static void set_backtrace(oop throwable, oop value);
 566   static int depth(oop throwable);
 567   static void set_depth(oop throwable, int value);
 568   // Needed by JVMTI to filter out this internal field.
 569   static int get_backtrace_offset() { return backtrace_offset;}
 570   static int get_detailMessage_offset() { return detailMessage_offset;}
 571   // Message
 572   static oop message(oop throwable);
 573   static void set_message(oop throwable, oop value);
 574   static Symbol* detail_message(oop throwable);
 575   static void print_stack_element(outputStream *st, Method* method, int bci);
 576   static void print_stack_usage(Handle stream);
 577 
 578   static void compute_offsets();
 579   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 580 
 581   // Allocate space for backtrace (created but stack trace not filled in)
 582   static void allocate_backtrace(Handle throwable, TRAPS);
 583   // Fill in current stack trace for throwable with preallocated backtrace (no GC)
 584   static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
 585   // Fill in current stack trace, can cause GC
 586   static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
 587   static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
 588   // Programmatic access to stack trace
 589   static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
 590   // Printing
 591   static void print(oop throwable, outputStream* st);
 592   static void print_stack_trace(Handle throwable, outputStream* st);
 593   static void java_printStackTrace(Handle throwable, TRAPS);
 594   // Debugging
 595   friend class JavaClasses;
 596   // Gets the method and bci of the top frame (TOS). Returns false if this failed.
 597   static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
 598 };
 599 
 600 
 601 // Interface to java.lang.reflect.AccessibleObject objects
 602 
 603 class java_lang_reflect_AccessibleObject: AllStatic {
 604  private:
 605   // Note that to reduce dependencies on the JDK we compute these
 606   // offsets at run-time.
 607   static int override_offset;
 608 
 609   static void compute_offsets();
 610 
 611  public:
 612   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 613 
 614   // Accessors
 615   static jboolean override(oop reflect);
 616   static void set_override(oop reflect, jboolean value);
 617 
 618   // Debugging
 619   friend class JavaClasses;
 620 };
 621 
 622 
 623 // Interface to java.lang.reflect.Method objects
 624 
 625 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
 626  private:
 627   // Note that to reduce dependencies on the JDK we compute these
 628   // offsets at run-time.
 629   static int clazz_offset;
 630   static int name_offset;
 631   static int returnType_offset;
 632   static int parameterTypes_offset;
 633   static int exceptionTypes_offset;
 634   static int slot_offset;
 635   static int modifiers_offset;
 636   static int signature_offset;
 637   static int annotations_offset;
 638   static int parameter_annotations_offset;
 639   static int annotation_default_offset;
 640 
 641   static void compute_offsets();
 642  public:
 643   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 644 
 645   // Allocation
 646   static Handle create(TRAPS);
 647 
 648   // Accessors
 649   static oop clazz(oop reflect);
 650   static void set_clazz(oop reflect, oop value);
 651 
 652   static void set_name(oop method, oop value);
 653 
 654   static oop return_type(oop method);
 655   static void set_return_type(oop method, oop value);
 656 
 657   static oop parameter_types(oop method);
 658   static void set_parameter_types(oop method, oop value);
 659 
 660   static int slot(oop reflect);
 661   static void set_slot(oop reflect, int value);
 662 
 663   static void set_exception_types(oop method, oop value);
 664   static void set_modifiers(oop method, int value);
 665   static void set_signature(oop method, oop value);
 666   static void set_annotations(oop method, oop value);
 667   static void set_parameter_annotations(oop method, oop value);
 668   static void set_annotation_default(oop method, oop value);
 669 
 670   // Debugging
 671   friend class JavaClasses;
 672 };
 673 
 674 
 675 // Interface to java.lang.reflect.Constructor objects
 676 
 677 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
 678  private:
 679   // Note that to reduce dependencies on the JDK we compute these
 680   // offsets at run-time.
 681   static int clazz_offset;
 682   static int parameterTypes_offset;
 683   static int exceptionTypes_offset;
 684   static int slot_offset;
 685   static int modifiers_offset;
 686   static int signature_offset;
 687   static int annotations_offset;
 688   static int parameter_annotations_offset;
 689 
 690   static void compute_offsets();
 691  public:
 692   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 693 
 694   // Allocation
 695   static Handle create(TRAPS);
 696 
 697   // Accessors
 698   static oop clazz(oop reflect);
 699   static void set_clazz(oop reflect, oop value);
 700 
 701   static oop parameter_types(oop constructor);
 702   static void set_parameter_types(oop constructor, oop value);
 703 
 704   static int slot(oop reflect);
 705   static void set_slot(oop reflect, int value);
 706 
 707   static void set_exception_types(oop constructor, oop value);
 708   static void set_modifiers(oop constructor, int value);
 709   static void set_signature(oop constructor, oop value);
 710   static void set_annotations(oop constructor, oop value);
 711   static void set_parameter_annotations(oop method, oop value);
 712 
 713   // Debugging
 714   friend class JavaClasses;
 715 };
 716 
 717 
 718 // Interface to java.lang.reflect.Field objects
 719 
 720 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
 721  private:
 722   // Note that to reduce dependencies on the JDK we compute these
 723   // offsets at run-time.
 724   static int clazz_offset;
 725   static int name_offset;
 726   static int type_offset;
 727   static int slot_offset;
 728   static int modifiers_offset;
 729   static int signature_offset;
 730   static int annotations_offset;
 731 
 732   static void compute_offsets();
 733 
 734  public:
 735   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 736 
 737   // Allocation
 738   static Handle create(TRAPS);
 739 
 740   // Accessors
 741   static oop clazz(oop reflect);
 742   static void set_clazz(oop reflect, oop value);
 743 
 744   static oop name(oop field);
 745   static void set_name(oop field, oop value);
 746 
 747   static oop type(oop field);
 748   static void set_type(oop field, oop value);
 749 
 750   static int slot(oop reflect);
 751   static void set_slot(oop reflect, int value);
 752 
 753   static int modifiers(oop field);
 754   static void set_modifiers(oop field, int value);
 755 
 756   static void set_signature(oop constructor, oop value);
 757   static void set_annotations(oop constructor, oop value);
 758   static void set_parameter_annotations(oop method, oop value);
 759   static void set_annotation_default(oop method, oop value);
 760 
 761   // Debugging
 762   friend class JavaClasses;
 763 };
 764 
 765 class java_lang_reflect_Parameter {
 766  private:
 767   // Note that to reduce dependencies on the JDK we compute these
 768   // offsets at run-time.
 769   static int name_offset;
 770   static int modifiers_offset;
 771   static int index_offset;
 772   static int executable_offset;
 773 
 774   static void compute_offsets();
 775 
 776  public:
 777   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 778 
 779   // Allocation
 780   static Handle create(TRAPS);
 781 
 782   // Accessors
 783   static oop name(oop field);
 784   static void set_name(oop field, oop value);
 785 
 786   static int index(oop reflect);
 787   static void set_index(oop reflect, int value);
 788 
 789   static int modifiers(oop reflect);
 790   static void set_modifiers(oop reflect, int value);
 791 
 792   static oop executable(oop constructor);
 793   static void set_executable(oop constructor, oop value);
 794 
 795   friend class JavaClasses;
 796 };
 797 
 798 #define MODULE_INJECTED_FIELDS(macro)                            \
 799   macro(java_lang_Module, module_entry, intptr_signature, false)
 800 
 801 class java_lang_Module {
 802   private:
 803     static int loader_offset;
 804     static int name_offset;
 805     static int _module_entry_offset;
 806     static void compute_offsets();
 807 
 808   public:
 809     static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 810 
 811     // Allocation
 812     static Handle create(Handle loader, Handle module_name, TRAPS);
 813 
 814     // Testers
 815     static bool is_instance(oop obj);
 816 
 817     // Accessors
 818     static oop loader(oop module);
 819     static void set_loader(oop module, oop value);
 820 
 821     static oop name(oop module);
 822     static void set_name(oop module, oop value);
 823 
 824     static ModuleEntry* module_entry(oop module);
 825     static void set_module_entry(oop module, ModuleEntry* module_entry);
 826 
 827   friend class JavaClasses;
 828 };
 829 
 830 // Interface to jdk.internal.reflect.ConstantPool objects
 831 class reflect_ConstantPool {
 832  private:
 833   // Note that to reduce dependencies on the JDK we compute these
 834   // offsets at run-time.
 835   static int _oop_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 void set_cp(oop reflect, ConstantPool* value);
 847   static int oop_offset() {
 848     return _oop_offset;
 849   }
 850 
 851   static ConstantPool* get_cp(oop reflect);
 852 
 853   // Debugging
 854   friend class JavaClasses;
 855 };
 856 
 857 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
 858 class reflect_UnsafeStaticFieldAccessorImpl {
 859  private:
 860   static int _base_offset;
 861   static void compute_offsets();
 862 
 863  public:
 864   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 865 
 866   static int base_offset() {
 867     return _base_offset;
 868   }
 869 
 870   // Debugging
 871   friend class JavaClasses;
 872 };
 873 
 874 // Interface to java.lang primitive type boxing objects:
 875 //  - java.lang.Boolean
 876 //  - java.lang.Character
 877 //  - java.lang.Float
 878 //  - java.lang.Double
 879 //  - java.lang.Byte
 880 //  - java.lang.Short
 881 //  - java.lang.Integer
 882 //  - java.lang.Long
 883 
 884 // This could be separated out into 8 individual classes.
 885 
 886 class java_lang_boxing_object: AllStatic {
 887  private:
 888   enum {
 889    hc_value_offset = 0
 890   };
 891   static int value_offset;
 892   static int long_value_offset;
 893 
 894   static oop initialize_and_allocate(BasicType type, TRAPS);
 895  public:
 896   // Allocation. Returns a boxed value, or NULL for invalid type.
 897   static oop create(BasicType type, jvalue* value, TRAPS);
 898   // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
 899   static BasicType get_value(oop box, jvalue* value);
 900   static BasicType set_value(oop box, jvalue* value);
 901   static BasicType basic_type(oop box);
 902   static bool is_instance(oop box)                 { return basic_type(box) != T_ILLEGAL; }
 903   static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
 904   static void print(oop box, outputStream* st)     { jvalue value;  print(get_value(box, &value), &value, st); }
 905   static void print(BasicType type, jvalue* value, outputStream* st);
 906 
 907   static int value_offset_in_bytes(BasicType type) {
 908     return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
 909                                                     value_offset;
 910   }
 911 
 912   // Debugging
 913   friend class JavaClasses;
 914 };
 915 
 916 
 917 
 918 // Interface to java.lang.ref.Reference objects
 919 
 920 class java_lang_ref_Reference: AllStatic {
 921  public:
 922   enum {
 923    hc_referent_offset   = 0,
 924    hc_queue_offset      = 1,
 925    hc_next_offset       = 2,
 926    hc_discovered_offset = 3  // Is not last, see SoftRefs.
 927   };
 928 
 929   static int referent_offset;
 930   static int queue_offset;
 931   static int next_offset;
 932   static int discovered_offset;
 933 
 934   // Accessors
 935   static inline oop referent(oop ref);
 936   static inline void set_referent(oop ref, oop value);
 937   static inline void set_referent_raw(oop ref, oop value);
 938   static inline HeapWord* referent_addr_raw(oop ref);
 939   static inline oop next(oop ref);
 940   static inline void set_next(oop ref, oop value);
 941   static inline void set_next_raw(oop ref, oop value);
 942   static inline HeapWord* next_addr_raw(oop ref);
 943   static inline oop discovered(oop ref);
 944   static inline void set_discovered(oop ref, oop value);
 945   static inline void set_discovered_raw(oop ref, oop value);
 946   static inline HeapWord* discovered_addr_raw(oop ref);
 947   static inline oop queue(oop ref);
 948   static inline void set_queue(oop ref, oop value);
 949   static bool is_referent_field(oop obj, ptrdiff_t offset);
 950   static inline bool is_final(oop ref);
 951   static inline bool is_phantom(oop ref);
 952 };
 953 
 954 
 955 // Interface to java.lang.ref.SoftReference objects
 956 
 957 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
 958  public:
 959   static int timestamp_offset;
 960   static int static_clock_offset;
 961 
 962   // Accessors
 963   static jlong timestamp(oop ref);
 964 
 965   // Accessors for statics
 966   static jlong clock();
 967   static void set_clock(jlong value);
 968 
 969   static void compute_offsets();
 970   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 971 };
 972 
 973 // Interface to java.lang.invoke.MethodHandle objects
 974 
 975 class MethodHandleEntry;
 976 
 977 class java_lang_invoke_MethodHandle: AllStatic {
 978   friend class JavaClasses;
 979 
 980  private:
 981   static int _type_offset;               // the MethodType of this MH
 982   static int _form_offset;               // the LambdaForm of this MH
 983 
 984   static void compute_offsets();
 985 
 986  public:
 987   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 988 
 989   // Accessors
 990   static oop            type(oop mh);
 991   static void       set_type(oop mh, oop mtype);
 992 
 993   static oop            form(oop mh);
 994   static void       set_form(oop mh, oop lform);
 995 
 996   // Testers
 997   static bool is_subclass(Klass* klass) {
 998     return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
 999   }
1000   static bool is_instance(oop obj);
1001 
1002   // Accessors for code generation:
1003   static int type_offset_in_bytes()             { return _type_offset; }
1004   static int form_offset_in_bytes()             { return _form_offset; }
1005 };
1006 
1007 // Interface to java.lang.invoke.DirectMethodHandle objects
1008 
1009 class java_lang_invoke_DirectMethodHandle: AllStatic {
1010   friend class JavaClasses;
1011 
1012  private:
1013   static int _member_offset;               // the MemberName of this DMH
1014 
1015   static void compute_offsets();
1016 
1017  public:
1018   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1019 
1020   // Accessors
1021   static oop  member(oop mh);
1022 
1023   // Testers
1024   static bool is_subclass(Klass* klass) {
1025     return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1026   }
1027   static bool is_instance(oop obj);
1028 
1029   // Accessors for code generation:
1030   static int member_offset_in_bytes()           { return _member_offset; }
1031 };
1032 
1033 // Interface to java.lang.invoke.LambdaForm objects
1034 // (These are a private interface for managing adapter code generation.)
1035 
1036 class java_lang_invoke_LambdaForm: AllStatic {
1037   friend class JavaClasses;
1038 
1039  private:
1040   static int _vmentry_offset;  // type is MemberName
1041 
1042   static void compute_offsets();
1043 
1044  public:
1045   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1046 
1047   // Accessors
1048   static oop            vmentry(oop lform);
1049   static void       set_vmentry(oop lform, oop invoker);
1050 
1051   // Testers
1052   static bool is_subclass(Klass* klass) {
1053     return SystemDictionary::LambdaForm_klass() != NULL &&
1054       klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1055   }
1056   static bool is_instance(oop obj);
1057 
1058   // Accessors for code generation:
1059   static int vmentry_offset_in_bytes()          { return _vmentry_offset; }
1060 };
1061 
1062 
1063 // Interface to java.lang.invoke.MemberName objects
1064 // (These are a private interface for Java code to query the class hierarchy.)
1065 
1066 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro)                                   \
1067   macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1068   macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1069 
1070 class java_lang_invoke_ResolvedMethodName : AllStatic {
1071   friend class JavaClasses;
1072 
1073   static int _vmtarget_offset;
1074   static int _vmholder_offset;
1075 
1076   static void compute_offsets();
1077  public:
1078   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1079 
1080   static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1081 
1082   static Method* vmtarget(oop resolved_method);
1083   static void set_vmtarget(oop resolved_method, Method* method);
1084 
1085   static void set_vmholder(oop resolved_method, oop holder);
1086 
1087   // find or create resolved member name
1088   static oop find_resolved_method(const methodHandle& m, TRAPS);
1089 
1090   static bool is_instance(oop resolved_method);
1091 };
1092 
1093 
1094 #define MEMBERNAME_INJECTED_FIELDS(macro)                               \
1095   macro(java_lang_invoke_MemberName, vmindex,  intptr_signature, false)
1096 
1097 
1098 class java_lang_invoke_MemberName: AllStatic {
1099   friend class JavaClasses;
1100 
1101  private:
1102   // From java.lang.invoke.MemberName:
1103   //    private Class<?>   clazz;       // class in which the method is defined
1104   //    private String     name;        // may be null if not yet materialized
1105   //    private Object     type;        // may be null if not yet materialized
1106   //    private int        flags;       // modifier bits; see reflect.Modifier
1107   //    private ResolvedMethodName method;    // holds VM-specific target value
1108   //    private intptr_t   vmindex;     // member index within class or interface
1109   static int _clazz_offset;
1110   static int _name_offset;
1111   static int _type_offset;
1112   static int _flags_offset;
1113   static int _method_offset;
1114   static int _vmindex_offset;
1115 
1116   static void compute_offsets();
1117 
1118  public:
1119   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1120   // Accessors
1121   static oop            clazz(oop mname);
1122   static void       set_clazz(oop mname, oop clazz);
1123 
1124   static oop            type(oop mname);
1125   static void       set_type(oop mname, oop type);
1126 
1127   static oop            name(oop mname);
1128   static void       set_name(oop mname, oop name);
1129 
1130   static int            flags(oop mname);
1131   static void       set_flags(oop mname, int flags);
1132 
1133   // Link through ResolvedMethodName field to get Method*
1134   static Method*        vmtarget(oop mname);
1135   static void       set_method(oop mname, oop method);
1136 
1137   static intptr_t       vmindex(oop mname);
1138   static void       set_vmindex(oop mname, intptr_t index);
1139 
1140   // Testers
1141   static bool is_subclass(Klass* klass) {
1142     return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1143   }
1144   static bool is_instance(oop obj);
1145 
1146   static bool is_method(oop obj);
1147 
1148   // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1149   enum {
1150     MN_IS_METHOD             = 0x00010000, // method (not constructor)
1151     MN_IS_CONSTRUCTOR        = 0x00020000, // constructor
1152     MN_IS_FIELD              = 0x00040000, // field
1153     MN_IS_TYPE               = 0x00080000, // nested type
1154     MN_CALLER_SENSITIVE      = 0x00100000, // @CallerSensitive annotation detected
1155     MN_REFERENCE_KIND_SHIFT  = 24, // refKind
1156     MN_REFERENCE_KIND_MASK   = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1157     // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1158     MN_SEARCH_SUPERCLASSES   = 0x00100000, // walk super classes
1159     MN_SEARCH_INTERFACES     = 0x00200000, // walk implemented interfaces
1160     MN_NESTMATE_CLASS        = 0x00000001,
1161     MN_HIDDEN_CLASS          = 0x00000002,
1162     MN_STRONG_LOADER_LINK    = 0x00000004,
1163     MN_ACCESS_VM_ANNOTATIONS = 0x00100000
1164   };
1165 
1166   // Accessors for code generation:
1167   static int clazz_offset_in_bytes()            { return _clazz_offset; }
1168   static int type_offset_in_bytes()             { return _type_offset; }
1169   static int name_offset_in_bytes()             { return _name_offset; }
1170   static int flags_offset_in_bytes()            { return _flags_offset; }
1171   static int method_offset_in_bytes()           { return _method_offset; }
1172   static int vmindex_offset_in_bytes()          { return _vmindex_offset; }
1173 };
1174 
1175 
1176 // Interface to java.lang.invoke.MethodType objects
1177 
1178 class java_lang_invoke_MethodType: AllStatic {
1179   friend class JavaClasses;
1180 
1181  private:
1182   static int _rtype_offset;
1183   static int _ptypes_offset;
1184 
1185   static void compute_offsets();
1186 
1187  public:
1188   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1189   // Accessors
1190   static oop            rtype(oop mt);
1191   static objArrayOop    ptypes(oop mt);
1192 
1193   static oop            ptype(oop mt, int index);
1194   static int            ptype_count(oop mt);
1195 
1196   static int            ptype_slot_count(oop mt);  // extra counts for long/double
1197   static int            rtype_slot_count(oop mt);  // extra counts for long/double
1198 
1199   static Symbol*        as_signature(oop mt, bool intern_if_not_found);
1200   static void           print_signature(oop mt, outputStream* st);
1201 
1202   static bool is_instance(oop obj);
1203 
1204   static bool equals(oop mt1, oop mt2);
1205 
1206   // Accessors for code generation:
1207   static int rtype_offset_in_bytes()            { return _rtype_offset; }
1208   static int ptypes_offset_in_bytes()           { return _ptypes_offset; }
1209 };
1210 
1211 
1212 // Interface to java.lang.invoke.CallSite objects
1213 
1214 class java_lang_invoke_CallSite: AllStatic {
1215   friend class JavaClasses;
1216 
1217 private:
1218   static int _target_offset;
1219   static int _context_offset;
1220 
1221   static void compute_offsets();
1222 
1223 public:
1224   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1225   // Accessors
1226   static oop              target(          oop site);
1227   static void         set_target(          oop site, oop target);
1228   static void         set_target_volatile( oop site, oop target);
1229 
1230   static oop context_no_keepalive(oop site);
1231 
1232   // Testers
1233   static bool is_subclass(Klass* klass) {
1234     return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1235   }
1236   static bool is_instance(oop obj);
1237 
1238   // Accessors for code generation:
1239   static int target_offset_in_bytes()           { return _target_offset; }
1240 };
1241 
1242 // Interface to java.lang.invoke.ConstantCallSite objects
1243 
1244 class java_lang_invoke_ConstantCallSite: AllStatic {
1245   friend class JavaClasses;
1246 
1247 private:
1248   static int _is_frozen_offset;
1249 
1250   static void compute_offsets();
1251 
1252 public:
1253   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1254   // Accessors
1255   static jboolean is_frozen(oop site);
1256 
1257   // Testers
1258   static bool is_subclass(Klass* klass) {
1259     return klass->is_subclass_of(SystemDictionary::ConstantCallSite_klass());
1260   }
1261   static bool is_instance(oop obj);
1262 };
1263 
1264 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1265 
1266 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1267   macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1268   macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1269 
1270 class DependencyContext;
1271 
1272 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1273   friend class JavaClasses;
1274 
1275 private:
1276   static int _vmdependencies_offset;
1277   static int _last_cleanup_offset;
1278 
1279   static void compute_offsets();
1280 
1281 public:
1282   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1283   // Accessors
1284   static DependencyContext vmdependencies(oop context);
1285 
1286   // Testers
1287   static bool is_subclass(Klass* klass) {
1288     return klass->is_subclass_of(SystemDictionary::Context_klass());
1289   }
1290   static bool is_instance(oop obj);
1291 };
1292 
1293 // Interface to java.security.AccessControlContext objects
1294 
1295 class java_security_AccessControlContext: AllStatic {
1296  private:
1297   // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1298   // so we compute the offsets at startup rather than hard-wiring them.
1299   static int _context_offset;
1300   static int _privilegedContext_offset;
1301   static int _isPrivileged_offset;
1302   static int _isAuthorized_offset;
1303 
1304   static void compute_offsets();
1305  public:
1306   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1307   static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1308 
1309   // Debugging/initialization
1310   friend class JavaClasses;
1311 };
1312 
1313 
1314 // Interface to java.lang.ClassLoader objects
1315 
1316 #define CLASSLOADER_INJECTED_FIELDS(macro)                            \
1317   macro(java_lang_ClassLoader, loader_data,  intptr_signature, false)
1318 
1319 class java_lang_ClassLoader : AllStatic {
1320  private:
1321   static int _loader_data_offset;
1322   static bool offsets_computed;
1323   static int parent_offset;
1324   static int parallelCapable_offset;
1325   static int name_offset;
1326   static int nameAndId_offset;
1327   static int unnamedModule_offset;
1328 
1329  public:
1330   static void compute_offsets();
1331   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1332 
1333   static ClassLoaderData* loader_data_acquire(oop loader);
1334   static ClassLoaderData* loader_data_raw(oop loader);
1335   static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1336 
1337   static oop parent(oop loader);
1338   static oop name(oop loader);
1339   static oop nameAndId(oop loader);
1340   static bool isAncestor(oop loader, oop cl);
1341 
1342   // Support for parallelCapable field
1343   static bool parallelCapable(oop the_class_mirror);
1344 
1345   static bool is_trusted_loader(oop loader);
1346 
1347   // Return true if this is one of the class loaders associated with
1348   // the generated bytecodes for reflection.
1349   static bool is_reflection_class_loader(oop loader);
1350 
1351   // Fix for 4474172
1352   static oop  non_reflection_class_loader(oop loader);
1353 
1354   // Testers
1355   static bool is_subclass(Klass* klass) {
1356     return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1357   }
1358   static bool is_instance(oop obj);
1359 
1360   static oop unnamedModule(oop loader);
1361 
1362   // Debugging
1363   friend class JavaClasses;
1364   friend class ClassFileParser; // access to number_of_fake_fields
1365 };
1366 
1367 
1368 // Interface to java.lang.System objects
1369 
1370 class java_lang_System : AllStatic {
1371  private:
1372   static int  static_in_offset;
1373   static int static_out_offset;
1374   static int static_err_offset;
1375   static int static_security_offset;
1376 
1377  public:
1378   static int  in_offset_in_bytes();
1379   static int out_offset_in_bytes();
1380   static int err_offset_in_bytes();
1381 
1382   static void compute_offsets();
1383   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1384 
1385   // Debugging
1386   friend class JavaClasses;
1387 };
1388 
1389 
1390 // Interface to java.lang.StackTraceElement objects
1391 
1392 class java_lang_StackTraceElement: AllStatic {
1393  private:
1394   static int declaringClassObject_offset;
1395   static int classLoaderName_offset;
1396   static int moduleName_offset;
1397   static int moduleVersion_offset;
1398   static int declaringClass_offset;
1399   static int methodName_offset;
1400   static int fileName_offset;
1401   static int lineNumber_offset;
1402 
1403   // Setters
1404   static void set_classLoaderName(oop element, oop value);
1405   static void set_moduleName(oop element, oop value);
1406   static void set_moduleVersion(oop element, oop value);
1407   static void set_declaringClass(oop element, oop value);
1408   static void set_methodName(oop element, oop value);
1409   static void set_fileName(oop element, oop value);
1410   static void set_lineNumber(oop element, int value);
1411   static void set_declaringClassObject(oop element, oop value);
1412 
1413   static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1414                                    const methodHandle& method, int bci,
1415                                    Symbol*& source, oop& source_file, int& line_number, TRAPS);
1416 
1417  public:
1418   // Create an instance of StackTraceElement
1419   static oop create(const methodHandle& method, int bci, TRAPS);
1420 
1421   static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1422                       int version, int bci, Symbol* name, TRAPS);
1423 
1424   static void compute_offsets();
1425   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1426 
1427 #if INCLUDE_JVMCI
1428   static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1429 #endif
1430 
1431   // Debugging
1432   friend class JavaClasses;
1433 };
1434 
1435 
1436 class Backtrace: AllStatic {
1437  public:
1438   // Helper backtrace functions to store bci|version together.
1439   static int merge_bci_and_version(int bci, int version);
1440   static int merge_mid_and_cpref(int mid, int cpref);
1441   static int bci_at(unsigned int merged);
1442   static int version_at(unsigned int merged);
1443   static int mid_at(unsigned int merged);
1444   static int cpref_at(unsigned int merged);
1445   static int get_line_number(Method* method, int bci);
1446   static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1447 
1448   // Debugging
1449   friend class JavaClasses;
1450 };
1451 
1452 // Interface to java.lang.StackFrameInfo objects
1453 
1454 #define STACKFRAMEINFO_INJECTED_FIELDS(macro)                      \
1455   macro(java_lang_StackFrameInfo, version, short_signature, false)
1456 
1457 class java_lang_StackFrameInfo: AllStatic {
1458 private:
1459   static int _memberName_offset;
1460   static int _bci_offset;
1461   static int _version_offset;
1462 
1463   static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1464 
1465 public:
1466   // Setters
1467   static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1468   static void set_bci(oop info, int value);
1469 
1470   static void set_version(oop info, short value);
1471 
1472   static void compute_offsets();
1473   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1474 
1475   static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1476 
1477   // Debugging
1478   friend class JavaClasses;
1479 };
1480 
1481 class java_lang_LiveStackFrameInfo: AllStatic {
1482  private:
1483   static int _monitors_offset;
1484   static int _locals_offset;
1485   static int _operands_offset;
1486   static int _mode_offset;
1487 
1488  public:
1489   static void set_monitors(oop info, oop value);
1490   static void set_locals(oop info, oop value);
1491   static void set_operands(oop info, oop value);
1492   static void set_mode(oop info, int value);
1493 
1494   static void compute_offsets();
1495   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1496 
1497   // Debugging
1498   friend class JavaClasses;
1499 };
1500 
1501 // Interface to java.lang.reflect.RecordComponent objects
1502 
1503 class java_lang_reflect_RecordComponent: AllStatic {
1504  private:
1505   static int clazz_offset;
1506   static int name_offset;
1507   static int type_offset;
1508   static int accessor_offset;
1509   static int signature_offset;
1510   static int annotations_offset;
1511   static int typeAnnotations_offset;
1512 
1513   // Setters
1514   static void set_clazz(oop element, oop value);
1515   static void set_name(oop element, oop value);
1516   static void set_type(oop element, oop value);
1517   static void set_accessor(oop element, oop value);
1518   static void set_signature(oop element, oop value);
1519   static void set_annotations(oop element, oop value);
1520   static void set_typeAnnotations(oop element, oop value);
1521 
1522  public:
1523   // Create an instance of RecordComponent
1524   static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1525 
1526   static void compute_offsets();
1527   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1528 
1529   // Debugging
1530   friend class JavaClasses;
1531 };
1532 
1533 
1534 // Interface to java.lang.AssertionStatusDirectives objects
1535 
1536 class java_lang_AssertionStatusDirectives: AllStatic {
1537  private:
1538   static int classes_offset;
1539   static int classEnabled_offset;
1540   static int packages_offset;
1541   static int packageEnabled_offset;
1542   static int deflt_offset;
1543 
1544  public:
1545   // Setters
1546   static void set_classes(oop obj, oop val);
1547   static void set_classEnabled(oop obj, oop val);
1548   static void set_packages(oop obj, oop val);
1549   static void set_packageEnabled(oop obj, oop val);
1550   static void set_deflt(oop obj, bool val);
1551 
1552   static void compute_offsets();
1553   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1554 
1555   // Debugging
1556   friend class JavaClasses;
1557 };
1558 
1559 
1560 class java_nio_Buffer: AllStatic {
1561  private:
1562   static int _limit_offset;
1563 
1564  public:
1565   static int  limit_offset();
1566   static void compute_offsets();
1567   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1568 };
1569 
1570 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1571  private:
1572   static int  _owner_offset;
1573  public:
1574   static void compute_offsets();
1575   static oop  get_owner_threadObj(oop obj);
1576   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1577 };
1578 
1579  // Interface to jdk.internal.misc.UnsafeConsants
1580 
1581 class jdk_internal_misc_UnsafeConstants : AllStatic {
1582  public:
1583   static void set_unsafe_constants();
1584   static void compute_offsets() { }
1585   static void serialize_offsets(SerializeClosure* f) { }
1586 };
1587 
1588 class java_lang_Integer : AllStatic {
1589 public:
1590   static jint value(oop obj);
1591 };
1592 
1593 class java_lang_Long : AllStatic {
1594 public:
1595   static jlong value(oop obj);
1596 };
1597 
1598 class java_lang_Character : AllStatic {
1599 public:
1600   static jchar value(oop obj);
1601 };
1602 
1603 class java_lang_Short : AllStatic {
1604 public:
1605   static jshort value(oop obj);
1606 };
1607 
1608 class java_lang_Byte : AllStatic {
1609 public:
1610   static jbyte value(oop obj);
1611 };
1612 
1613 class java_lang_Boolean : AllStatic {
1614  private:
1615   static int _static_TRUE_offset;
1616   static int _static_FALSE_offset;
1617  public:
1618   static Symbol* symbol();
1619   static void compute_offsets(InstanceKlass* k);
1620   static oop  get_TRUE(InstanceKlass *k);
1621   static oop  get_FALSE(InstanceKlass *k);
1622   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1623   static jboolean value(oop obj);
1624 };
1625 
1626 class java_lang_Integer_IntegerCache : AllStatic {
1627  private:
1628   static int _static_cache_offset;
1629  public:
1630   static Symbol* symbol();
1631   static void compute_offsets(InstanceKlass* k);
1632   static objArrayOop  cache(InstanceKlass *k);
1633   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1634 };
1635 
1636 class java_lang_Long_LongCache : AllStatic {
1637  private:
1638   static int _static_cache_offset;
1639  public:
1640   static Symbol* symbol();
1641   static void compute_offsets(InstanceKlass* k);
1642   static objArrayOop  cache(InstanceKlass *k);
1643   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1644 };
1645 
1646 class java_lang_Character_CharacterCache : AllStatic {
1647  private:
1648   static int _static_cache_offset;
1649  public:
1650   static Symbol* symbol();
1651   static void compute_offsets(InstanceKlass* k);
1652   static objArrayOop  cache(InstanceKlass *k);
1653   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1654 };
1655 
1656 class java_lang_Short_ShortCache : AllStatic {
1657  private:
1658   static int _static_cache_offset;
1659  public:
1660   static Symbol* symbol();
1661   static void compute_offsets(InstanceKlass* k);
1662   static objArrayOop  cache(InstanceKlass *k);
1663   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1664 };
1665 
1666 class java_lang_Byte_ByteCache : AllStatic {
1667  private:
1668   static int _static_cache_offset;
1669  public:
1670   static Symbol* symbol();
1671   static void compute_offsets(InstanceKlass* k);
1672   static objArrayOop  cache(InstanceKlass *k);
1673   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1674 };
1675 
1676 // Use to declare fields that need to be injected into Java classes
1677 // for the JVM to use.  The name_index and signature_index are
1678 // declared in vmSymbols.  The may_be_java flag is used to declare
1679 // fields that might already exist in Java but should be injected if
1680 // they don't.  Otherwise the field is unconditionally injected and
1681 // the JVM uses the injected one.  This is to ensure that name
1682 // collisions don't occur.  In general may_be_java should be false
1683 // unless there's a good reason.
1684 
1685 class InjectedField {
1686  public:
1687   const SystemDictionary::WKID klass_id;
1688   const vmSymbols::SID name_index;
1689   const vmSymbols::SID signature_index;
1690   const bool           may_be_java;
1691 
1692 
1693   Klass* klass() const    { return SystemDictionary::well_known_klass(klass_id); }
1694   Symbol* name() const      { return lookup_symbol(name_index); }
1695   Symbol* signature() const { return lookup_symbol(signature_index); }
1696 
1697   int compute_offset();
1698 
1699   // Find the Symbol for this index
1700   static Symbol* lookup_symbol(int symbol_index) {
1701     return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1702   }
1703 };
1704 
1705 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1706   klass##_##name##_enum,
1707 
1708 #define ALL_INJECTED_FIELDS(macro)          \
1709   CLASS_INJECTED_FIELDS(macro)              \
1710   CLASSLOADER_INJECTED_FIELDS(macro)        \
1711   RESOLVEDMETHOD_INJECTED_FIELDS(macro)     \
1712   MEMBERNAME_INJECTED_FIELDS(macro)         \
1713   CALLSITECONTEXT_INJECTED_FIELDS(macro)    \
1714   STACKFRAMEINFO_INJECTED_FIELDS(macro)     \
1715   MODULE_INJECTED_FIELDS(macro)
1716 
1717 // Interface to hard-coded offset checking
1718 
1719 class JavaClasses : AllStatic {
1720  private:
1721 
1722   static InjectedField _injected_fields[];
1723 
1724   static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1725  public:
1726   enum InjectedFieldID {
1727     ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1728     MAX_enum
1729   };
1730 
1731   static int compute_injected_offset(InjectedFieldID id);
1732 
1733   static void compute_hard_coded_offsets();
1734   static void compute_offsets();
1735   static void check_offsets() PRODUCT_RETURN;
1736   static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1737   static InjectedField* get_injected(Symbol* class_name, int* field_count);
1738   static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1739 };
1740 
1741 #undef DECLARE_INJECTED_FIELD_ENUM
1742 
1743 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP