1 /*
   2  * Copyright (c) 1997, 2018, 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_VM_CLASSFILE_JAVACLASSES_HPP
  26 #define SHARE_VM_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 #include "utilities/utf8.hpp"
  33 
  34 // Interface for manipulating the basic Java classes.
  35 //
  36 // All dependencies on layout of actual Java classes should be kept here.
  37 // If the layout of any of the classes above changes the offsets must be adjusted.
  38 //
  39 // For most classes we hardwire the offsets for performance reasons. In certain
  40 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
  41 // startup since the layout here differs between JDK1.2 and JDK1.3.
  42 //
  43 // Note that fields (static and non-static) are arranged with oops before non-oops
  44 // on a per class basis. The offsets below have to reflect this ordering.
  45 //
  46 // When editing the layouts please update the check_offset verification code
  47 // correspondingly. The names in the enums must be identical to the actual field
  48 // names in order for the verification code to work.
  49 
  50 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
  51   f(java_lang_Class) \
  52   f(java_lang_String) \
  53   //end
  54 
  55 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
  56   f(java_lang_System) \
  57   f(java_lang_ClassLoader) \
  58   f(java_lang_Throwable) \
  59   f(java_lang_Thread) \
  60   f(java_lang_ThreadGroup) \
  61   f(java_lang_AssertionStatusDirectives) \
  62   f(java_lang_ref_SoftReference) \
  63   f(java_lang_invoke_MethodHandle) \
  64   f(java_lang_invoke_DirectMethodHandle) \
  65   f(java_lang_invoke_MemberName) \
  66   f(java_lang_invoke_ResolvedMethodName) \
  67   f(java_lang_invoke_LambdaForm) \
  68   f(java_lang_invoke_MethodType) \
  69   f(java_lang_invoke_CallSite) \
  70   f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
  71   f(java_security_AccessControlContext) \
  72   f(java_lang_reflect_AccessibleObject) \
  73   f(java_lang_reflect_Method) \
  74   f(java_lang_reflect_Constructor) \
  75   f(java_lang_reflect_Field) \
  76   f(java_nio_Buffer) \
  77   f(reflect_ConstantPool) \
  78   f(reflect_UnsafeStaticFieldAccessorImpl) \
  79   f(java_lang_reflect_Parameter) \
  80   f(java_lang_Module) \
  81   f(java_lang_StackTraceElement) \
  82   f(java_lang_StackFrameInfo) \
  83   f(java_lang_LiveStackFrameInfo) \
  84   f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
  85   //end
  86 
  87 #define BASIC_JAVA_CLASSES_DO(f) \
  88         BASIC_JAVA_CLASSES_DO_PART1(f) \
  89         BASIC_JAVA_CLASSES_DO_PART2(f)
  90 
  91 // Interface to java.lang.String objects
  92 
  93 class java_lang_String : AllStatic {
  94  private:
  95   static int value_offset;
  96   static int hash_offset;
  97   static int coder_offset;
  98 
  99   static bool initialized;
 100 
 101   static Handle basic_create(int length, bool byte_arr, TRAPS);
 102 
 103   static inline void set_coder(oop string, jbyte coder);
 104 
 105  public:
 106 
 107   // Coders
 108   enum Coder {
 109     CODER_LATIN1 =  0,
 110     CODER_UTF16  =  1
 111   };
 112 
 113   static void compute_offsets();
 114   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 115 
 116   // Instance creation
 117   static Handle create_from_unicode(jchar* unicode, int len, TRAPS);
 118   static oop    create_oop_from_unicode(jchar* unicode, int len, TRAPS);
 119   static Handle create_from_str(const char* utf8_str, TRAPS);
 120   static oop    create_oop_from_str(const char* utf8_str, TRAPS);
 121   static Handle create_from_symbol(Symbol* symbol, TRAPS);
 122   static Handle create_from_platform_dependent_str(const char* str, TRAPS);
 123   static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
 124 
 125   static void set_compact_strings(bool value);
 126 
 127   static int value_offset_in_bytes()  {
 128     assert(initialized && (value_offset > 0), "Must be initialized");
 129     return value_offset;
 130   }
 131   static int hash_offset_in_bytes()   {
 132     assert(initialized && (hash_offset > 0), "Must be initialized");
 133     return hash_offset;
 134   }
 135   static int coder_offset_in_bytes()   {
 136     assert(initialized && (coder_offset > 0), "Must be initialized");
 137     return coder_offset;
 138   }
 139 
 140   static inline void set_value_raw(oop string, typeArrayOop buffer);
 141   static inline void set_value(oop string, typeArrayOop buffer);
 142   static inline void set_hash(oop string, unsigned int hash);
 143 
 144   // Accessors
 145   static inline typeArrayOop value(oop java_string);
 146   static inline typeArrayOop value_no_keepalive(oop java_string);
 147   static inline unsigned int hash(oop java_string);
 148   static inline bool is_latin1(oop java_string);
 149   static inline int length(oop java_string);
 150   static int utf8_length(oop java_string);
 151 
 152   // String converters
 153   static char*  as_utf8_string(oop java_string);
 154   static char*  as_utf8_string(oop java_string, char* buf, int buflen);
 155   static char*  as_utf8_string(oop java_string, int start, int len);
 156   static char*  as_utf8_string(oop java_string, int start, int len, char* buf, int buflen);
 157   static char*  as_platform_dependent_str(Handle java_string, TRAPS);
 158   static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
 159   // produce an ascii string with all other values quoted using \u####
 160   static char*  as_quoted_ascii(oop java_string);
 161 
 162   // Compute the hash value for a java.lang.String object which would
 163   // contain the characters passed in.
 164   //
 165   // As the hash value used by the String object itself, in
 166   // String.hashCode().  This value is normally calculated in Java code
 167   // in the String.hashCode method(), but is precomputed for String
 168   // objects in the shared archive file.
 169   // hash P(31) from Kernighan & Ritchie
 170   //
 171   // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
 172   static unsigned int hash_code(const jchar* s, int len) {
 173     unsigned int h = 0;
 174     while (len-- > 0) {
 175       h = 31*h + (unsigned int) *s;
 176       s++;
 177     }
 178     return h;
 179   }
 180 
 181   static unsigned int hash_code(const jbyte* s, int len) {
 182     unsigned int h = 0;
 183     while (len-- > 0) {
 184       h = 31*h + (((unsigned int) *s) & 0xFF);
 185       s++;
 186     }
 187     return h;
 188   }
 189 
 190   static unsigned int hash_code(oop java_string);
 191 
 192   static bool equals(oop java_string, jchar* chars, int len);
 193   static bool equals(oop str1, oop str2);
 194 
 195   // Conversion between '.' and '/' formats
 196   static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
 197   static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
 198 
 199   // Conversion
 200   static Symbol* as_symbol(oop java_string, TRAPS);
 201   static Symbol* as_symbol_or_null(oop java_string);
 202 
 203   // Testers
 204   static bool is_instance(oop obj);
 205   static inline bool is_instance_inlined(oop obj);
 206 
 207   // Debugging
 208   static void print(oop java_string, outputStream* st);
 209   friend class JavaClasses;
 210   friend class StringTable;
 211 };
 212 
 213 
 214 // Interface to java.lang.Class objects
 215 
 216 #define CLASS_INJECTED_FIELDS(macro)                                       \
 217   macro(java_lang_Class, klass,                  intptr_signature,  false) \
 218   macro(java_lang_Class, array_klass,            intptr_signature,  false) \
 219   macro(java_lang_Class, oop_size,               int_signature,     false) \
 220   macro(java_lang_Class, static_oop_field_count, int_signature,     false) \
 221   macro(java_lang_Class, protection_domain,      object_signature,  false) \
 222   macro(java_lang_Class, signers,                object_signature,  false)
 223 
 224 class java_lang_Class : AllStatic {
 225   friend class VMStructs;
 226   friend class JVMCIVMStructs;
 227 
 228  private:
 229   // The fake offsets are added by the class loader when java.lang.Class is loaded
 230 
 231   static int _klass_offset;
 232   static int _array_klass_offset;
 233 
 234   static int _oop_size_offset;
 235   static int _static_oop_field_count_offset;
 236 
 237   static int _protection_domain_offset;
 238   static int _init_lock_offset;
 239   static int _signers_offset;
 240   static int _class_loader_offset;
 241   static int _module_offset;
 242   static int _component_mirror_offset;
 243 
 244   static bool offsets_computed;
 245   static int classRedefinedCount_offset;
 246 
 247   static GrowableArray<Klass*>* _fixup_mirror_list;
 248   static GrowableArray<Klass*>* _fixup_module_field_list;
 249 
 250   static void set_init_lock(oop java_class, oop init_lock);
 251   static void set_protection_domain(oop java_class, oop protection_domain);
 252   static void set_class_loader(oop java_class, oop class_loader);
 253   static void set_component_mirror(oop java_class, oop comp_mirror);
 254   static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
 255   static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
 256  public:
 257   static void allocate_fixup_lists();
 258   static void compute_offsets();
 259 
 260   // Instance creation
 261   static void create_mirror(Klass* k, Handle class_loader, Handle module,
 262                             Handle protection_domain, TRAPS);
 263   static void fixup_mirror(Klass* k, TRAPS);
 264   static oop  create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
 265 
 266   // Archiving
 267   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 268   static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
 269   static oop  archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
 270   static oop  process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
 271                                       NOT_CDS_JAVA_HEAP_RETURN_(NULL);
 272   static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
 273                                       Handle protection_domain,
 274                                       TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
 275 
 276   static void fixup_module_field(Klass* k, Handle module);
 277 
 278   // Conversion
 279   static Klass* as_Klass(oop java_class);
 280   static Klass* as_Klass_raw(oop java_class);
 281   static void set_klass(oop java_class, Klass* klass);
 282   static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
 283   static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
 284   static void print_signature(oop java_class, outputStream *st);
 285   static const char* as_external_name(oop java_class);
 286   // Testing
 287   static bool is_instance(oop obj);
 288 
 289   static bool is_primitive(oop java_class);
 290   static BasicType primitive_type(oop java_class);
 291   static oop primitive_mirror(BasicType t);
 292   // JVM_NewArray support
 293   static Klass* array_klass_acquire(oop java_class);
 294   static void release_set_array_klass(oop java_class, Klass* klass);
 295   // compiler support for class operations
 296   static int klass_offset_in_bytes()                { return _klass_offset; }
 297   static int array_klass_offset_in_bytes()          { return _array_klass_offset; }
 298   // Support for classRedefinedCount field
 299   static int classRedefinedCount(oop the_class_mirror);
 300   static void set_classRedefinedCount(oop the_class_mirror, int value);
 301 
 302   // Support for embedded per-class oops
 303   static oop  protection_domain(oop java_class);
 304   static oop  init_lock(oop java_class);
 305   static oop  component_mirror(oop java_class);
 306   static objArrayOop  signers(oop java_class);
 307   static void set_signers(oop java_class, objArrayOop signers);
 308 
 309   static oop class_loader(oop java_class);
 310   static void set_module(oop java_class, oop module);
 311   static oop module(oop java_class);
 312 
 313   static int oop_size(oop java_class);
 314   static int oop_size_raw(oop java_class);
 315   static void set_oop_size(HeapWord* java_class, int size);
 316   static int static_oop_field_count(oop java_class);
 317   static int static_oop_field_count_raw(oop java_class);
 318   static void set_static_oop_field_count(oop java_class, int size);
 319 
 320   static GrowableArray<Klass*>* fixup_mirror_list() {
 321     return _fixup_mirror_list;
 322   }
 323   static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
 324     _fixup_mirror_list = v;
 325   }
 326 
 327   static GrowableArray<Klass*>* fixup_module_field_list() {
 328     return _fixup_module_field_list;
 329   }
 330   static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
 331     _fixup_module_field_list = v;
 332   }
 333 
 334   // Debugging
 335   friend class JavaClasses;
 336   friend class InstanceKlass;   // verification code accesses offsets
 337   friend class ClassFileParser; // access to number_of_fake_fields
 338 };
 339 
 340 // Interface to java.lang.Thread objects
 341 
 342 class java_lang_Thread : AllStatic {
 343  private:
 344   // Note that for this class the layout changed between JDK1.2 and JDK1.3,
 345   // so we compute the offsets at startup rather than hard-wiring them.
 346   static int _name_offset;
 347   static int _group_offset;
 348   static int _contextClassLoader_offset;
 349   static int _inheritedAccessControlContext_offset;
 350   static int _priority_offset;
 351   static int _eetop_offset;
 352   static int _daemon_offset;
 353   static int _stillborn_offset;
 354   static int _stackSize_offset;
 355   static int _tid_offset;
 356   static int _thread_status_offset;
 357   static int _park_blocker_offset;
 358   static int _park_event_offset ;
 359 
 360   static void compute_offsets();
 361 
 362  public:
 363   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 364 
 365   // Instance creation
 366   static oop create();
 367   // Returns the JavaThread associated with the thread obj
 368   static JavaThread* thread(oop java_thread);
 369   // Set JavaThread for instance
 370   static void set_thread(oop java_thread, JavaThread* thread);
 371   // Name
 372   static oop name(oop java_thread);
 373   static void set_name(oop java_thread, oop name);
 374   // Priority
 375   static ThreadPriority priority(oop java_thread);
 376   static void set_priority(oop java_thread, ThreadPriority priority);
 377   // Thread group
 378   static oop  threadGroup(oop java_thread);
 379   // Stillborn
 380   static bool is_stillborn(oop java_thread);
 381   static void set_stillborn(oop java_thread);
 382   // Alive (NOTE: this is not really a field, but provides the correct
 383   // definition without doing a Java call)
 384   static bool is_alive(oop java_thread);
 385   // Daemon
 386   static bool is_daemon(oop java_thread);
 387   static void set_daemon(oop java_thread);
 388   // Context ClassLoader
 389   static oop context_class_loader(oop java_thread);
 390   // Control context
 391   static oop inherited_access_control_context(oop java_thread);
 392   // Stack size hint
 393   static jlong stackSize(oop java_thread);
 394   // Thread ID
 395   static jlong thread_id(oop java_thread);
 396 
 397   // Blocker object responsible for thread parking
 398   static oop park_blocker(oop java_thread);
 399 
 400   // Pointer to type-stable park handler, encoded as jlong.
 401   // Should be set when apparently null
 402   // For details, see unsafe.cpp Unsafe_Unpark
 403   static jlong park_event(oop java_thread);
 404   static bool set_park_event(oop java_thread, jlong ptr);
 405 
 406   // Java Thread Status for JVMTI and M&M use.
 407   // This thread status info is saved in threadStatus field of
 408   // java.lang.Thread java class.
 409   enum ThreadStatus {
 410     NEW                      = 0,
 411     RUNNABLE                 = JVMTI_THREAD_STATE_ALIVE +          // runnable / running
 412                                JVMTI_THREAD_STATE_RUNNABLE,
 413     SLEEPING                 = JVMTI_THREAD_STATE_ALIVE +          // Thread.sleep()
 414                                JVMTI_THREAD_STATE_WAITING +
 415                                JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
 416                                JVMTI_THREAD_STATE_SLEEPING,
 417     IN_OBJECT_WAIT           = JVMTI_THREAD_STATE_ALIVE +          // Object.wait()
 418                                JVMTI_THREAD_STATE_WAITING +
 419                                JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
 420                                JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
 421     IN_OBJECT_WAIT_TIMED     = JVMTI_THREAD_STATE_ALIVE +          // Object.wait(long)
 422                                JVMTI_THREAD_STATE_WAITING +
 423                                JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
 424                                JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
 425     PARKED                   = JVMTI_THREAD_STATE_ALIVE +          // LockSupport.park()
 426                                JVMTI_THREAD_STATE_WAITING +
 427                                JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
 428                                JVMTI_THREAD_STATE_PARKED,
 429     PARKED_TIMED             = JVMTI_THREAD_STATE_ALIVE +          // LockSupport.park(long)
 430                                JVMTI_THREAD_STATE_WAITING +
 431                                JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
 432                                JVMTI_THREAD_STATE_PARKED,
 433     BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE +          // (re-)entering a synchronization block
 434                                JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
 435     TERMINATED               = JVMTI_THREAD_STATE_TERMINATED
 436   };
 437   // Write thread status info to threadStatus field of java.lang.Thread.
 438   static void set_thread_status(oop java_thread_oop, ThreadStatus status);
 439   // Read thread status info from threadStatus field of java.lang.Thread.
 440   static ThreadStatus get_thread_status(oop java_thread_oop);
 441 
 442   static const char*  thread_status_name(oop java_thread_oop);
 443 
 444   // Debugging
 445   friend class JavaClasses;
 446 };
 447 
 448 // Interface to java.lang.ThreadGroup objects
 449 
 450 class java_lang_ThreadGroup : AllStatic {
 451  private:
 452   static int _parent_offset;
 453   static int _name_offset;
 454   static int _threads_offset;
 455   static int _groups_offset;
 456   static int _maxPriority_offset;
 457   static int _destroyed_offset;
 458   static int _daemon_offset;
 459   static int _nthreads_offset;
 460   static int _ngroups_offset;
 461 
 462   static void compute_offsets();
 463 
 464  public:
 465   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 466 
 467   // parent ThreadGroup
 468   static oop  parent(oop java_thread_group);
 469   // name
 470   static const char* name(oop java_thread_group);
 471   // ("name as oop" accessor is not necessary)
 472   // Number of threads in group
 473   static int nthreads(oop java_thread_group);
 474   // threads
 475   static objArrayOop threads(oop java_thread_group);
 476   // Number of threads in group
 477   static int ngroups(oop java_thread_group);
 478   // groups
 479   static objArrayOop groups(oop java_thread_group);
 480   // maxPriority in group
 481   static ThreadPriority maxPriority(oop java_thread_group);
 482   // Destroyed
 483   static bool is_destroyed(oop java_thread_group);
 484   // Daemon
 485   static bool is_daemon(oop java_thread_group);
 486   // Debugging
 487   friend class JavaClasses;
 488 };
 489 
 490 
 491 
 492 // Interface to java.lang.Throwable objects
 493 
 494 class java_lang_Throwable: AllStatic {
 495   friend class BacktraceBuilder;
 496   friend class BacktraceIterator;
 497 
 498  private:
 499   // Offsets
 500   enum {
 501     hc_backtrace_offset     =  0,
 502     hc_detailMessage_offset =  1,
 503     hc_cause_offset         =  2,  // New since 1.4
 504     hc_stackTrace_offset    =  3   // New since 1.4
 505   };
 506   // Trace constants
 507   enum {
 508     trace_methods_offset = 0,
 509     trace_bcis_offset    = 1,
 510     trace_mirrors_offset = 2,
 511     trace_names_offset   = 3,
 512     trace_next_offset    = 4,
 513     trace_size           = 5,
 514     trace_chunk_size     = 32
 515   };
 516 
 517   static int backtrace_offset;
 518   static int detailMessage_offset;
 519   static int stackTrace_offset;
 520   static int depth_offset;
 521   static int static_unassigned_stacktrace_offset;
 522 
 523   // StackTrace (programmatic access, new since 1.4)
 524   static void clear_stacktrace(oop throwable);
 525   // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
 526   static void set_stacktrace(oop throwable, oop st_element_array);
 527   static oop unassigned_stacktrace();
 528 
 529  public:
 530   // Backtrace
 531   static oop backtrace(oop throwable);
 532   static void set_backtrace(oop throwable, oop value);
 533   static int depth(oop throwable);
 534   static void set_depth(oop throwable, int value);
 535   // Needed by JVMTI to filter out this internal field.
 536   static int get_backtrace_offset() { return backtrace_offset;}
 537   static int get_detailMessage_offset() { return detailMessage_offset;}
 538   // Message
 539   static oop message(oop throwable);
 540   static void set_message(oop throwable, oop value);
 541   static Symbol* detail_message(oop throwable);
 542   static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
 543   static void print_stack_usage(Handle stream);
 544 
 545   static void compute_offsets();
 546   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 547 
 548   // Allocate space for backtrace (created but stack trace not filled in)
 549   static void allocate_backtrace(Handle throwable, TRAPS);
 550   // Fill in current stack trace for throwable with preallocated backtrace (no GC)
 551   static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
 552   // Fill in current stack trace, can cause GC
 553   static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
 554   static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
 555   // Programmatic access to stack trace
 556   static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
 557   // Printing
 558   static void print(oop throwable, outputStream* st);
 559   static void print_stack_trace(Handle throwable, outputStream* st);
 560   static void java_printStackTrace(Handle throwable, TRAPS);
 561   // Debugging
 562   friend class JavaClasses;
 563 };
 564 
 565 
 566 // Interface to java.lang.reflect.AccessibleObject objects
 567 
 568 class java_lang_reflect_AccessibleObject: AllStatic {
 569  private:
 570   // Note that to reduce dependencies on the JDK we compute these
 571   // offsets at run-time.
 572   static int override_offset;
 573 
 574   static void compute_offsets();
 575 
 576  public:
 577   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 578 
 579   // Accessors
 580   static jboolean override(oop reflect);
 581   static void set_override(oop reflect, jboolean value);
 582 
 583   // Debugging
 584   friend class JavaClasses;
 585 };
 586 
 587 
 588 // Interface to java.lang.reflect.Method objects
 589 
 590 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
 591  private:
 592   // Note that to reduce dependencies on the JDK we compute these
 593   // offsets at run-time.
 594   static int clazz_offset;
 595   static int name_offset;
 596   static int returnType_offset;
 597   static int parameterTypes_offset;
 598   static int exceptionTypes_offset;
 599   static int slot_offset;
 600   static int modifiers_offset;
 601   static int signature_offset;
 602   static int annotations_offset;
 603   static int parameter_annotations_offset;
 604   static int annotation_default_offset;
 605   static int type_annotations_offset;
 606 
 607   static void compute_offsets();
 608 
 609  public:
 610   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 611 
 612   // Allocation
 613   static Handle create(TRAPS);
 614 
 615   // Accessors
 616   static oop clazz(oop reflect);
 617   static void set_clazz(oop reflect, oop value);
 618 
 619   static oop name(oop method);
 620   static void set_name(oop method, oop value);
 621 
 622   static oop return_type(oop method);
 623   static void set_return_type(oop method, oop value);
 624 
 625   static oop parameter_types(oop method);
 626   static void set_parameter_types(oop method, oop value);
 627 
 628   static oop exception_types(oop method);
 629   static void set_exception_types(oop method, oop value);
 630 
 631   static int slot(oop reflect);
 632   static void set_slot(oop reflect, int value);
 633 
 634   static int modifiers(oop method);
 635   static void set_modifiers(oop method, int value);
 636 
 637   static bool has_signature_field();
 638   static oop signature(oop method);
 639   static void set_signature(oop method, oop value);
 640 
 641   static bool has_annotations_field();
 642   static oop annotations(oop method);
 643   static void set_annotations(oop method, oop value);
 644 
 645   static bool has_parameter_annotations_field();
 646   static oop parameter_annotations(oop method);
 647   static void set_parameter_annotations(oop method, oop value);
 648 
 649   static bool has_annotation_default_field();
 650   static oop annotation_default(oop method);
 651   static void set_annotation_default(oop method, oop value);
 652 
 653   static bool has_type_annotations_field();
 654   static oop type_annotations(oop method);
 655   static void set_type_annotations(oop method, oop value);
 656 
 657   // Debugging
 658   friend class JavaClasses;
 659 };
 660 
 661 
 662 // Interface to java.lang.reflect.Constructor objects
 663 
 664 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
 665  private:
 666   // Note that to reduce dependencies on the JDK we compute these
 667   // offsets at run-time.
 668   static int clazz_offset;
 669   static int parameterTypes_offset;
 670   static int exceptionTypes_offset;
 671   static int slot_offset;
 672   static int modifiers_offset;
 673   static int signature_offset;
 674   static int annotations_offset;
 675   static int parameter_annotations_offset;
 676   static int type_annotations_offset;
 677 
 678   static void compute_offsets();
 679 
 680  public:
 681   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 682 
 683   // Allocation
 684   static Handle create(TRAPS);
 685 
 686   // Accessors
 687   static oop clazz(oop reflect);
 688   static void set_clazz(oop reflect, oop value);
 689 
 690   static oop parameter_types(oop constructor);
 691   static void set_parameter_types(oop constructor, oop value);
 692 
 693   static oop exception_types(oop constructor);
 694   static void set_exception_types(oop constructor, oop value);
 695 
 696   static int slot(oop reflect);
 697   static void set_slot(oop reflect, int value);
 698 
 699   static int modifiers(oop constructor);
 700   static void set_modifiers(oop constructor, int value);
 701 
 702   static bool has_signature_field();
 703   static oop signature(oop constructor);
 704   static void set_signature(oop constructor, oop value);
 705 
 706   static bool has_annotations_field();
 707   static oop annotations(oop constructor);
 708   static void set_annotations(oop constructor, oop value);
 709 
 710   static bool has_parameter_annotations_field();
 711   static oop parameter_annotations(oop method);
 712   static void set_parameter_annotations(oop method, oop value);
 713 
 714   static bool has_type_annotations_field();
 715   static oop type_annotations(oop constructor);
 716   static void set_type_annotations(oop constructor, oop value);
 717 
 718   // Debugging
 719   friend class JavaClasses;
 720 };
 721 
 722 
 723 // Interface to java.lang.reflect.Field objects
 724 
 725 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
 726  private:
 727   // Note that to reduce dependencies on the JDK we compute these
 728   // offsets at run-time.
 729   static int clazz_offset;
 730   static int name_offset;
 731   static int type_offset;
 732   static int slot_offset;
 733   static int modifiers_offset;
 734   static int signature_offset;
 735   static int annotations_offset;
 736   static int type_annotations_offset;
 737 
 738   static void compute_offsets();
 739 
 740  public:
 741   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 742 
 743   // Allocation
 744   static Handle create(TRAPS);
 745 
 746   // Accessors
 747   static oop clazz(oop reflect);
 748   static void set_clazz(oop reflect, oop value);
 749 
 750   static oop name(oop field);
 751   static void set_name(oop field, oop value);
 752 
 753   static oop type(oop field);
 754   static void set_type(oop field, oop value);
 755 
 756   static int slot(oop reflect);
 757   static void set_slot(oop reflect, int value);
 758 
 759   static int modifiers(oop field);
 760   static void set_modifiers(oop field, int value);
 761 
 762   static bool has_signature_field();
 763   static oop signature(oop constructor);
 764   static void set_signature(oop constructor, oop value);
 765 
 766   static bool has_annotations_field();
 767   static oop annotations(oop constructor);
 768   static void set_annotations(oop constructor, oop value);
 769 
 770   static bool has_parameter_annotations_field();
 771   static oop parameter_annotations(oop method);
 772   static void set_parameter_annotations(oop method, oop value);
 773 
 774   static bool has_annotation_default_field();
 775   static oop annotation_default(oop method);
 776   static void set_annotation_default(oop method, oop value);
 777 
 778   static bool has_type_annotations_field();
 779   static oop type_annotations(oop field);
 780   static void set_type_annotations(oop field, oop value);
 781 
 782   // Debugging
 783   friend class JavaClasses;
 784 };
 785 
 786 class java_lang_reflect_Parameter {
 787  private:
 788   // Note that to reduce dependencies on the JDK we compute these
 789   // offsets at run-time.
 790   static int name_offset;
 791   static int modifiers_offset;
 792   static int index_offset;
 793   static int executable_offset;
 794 
 795   static void compute_offsets();
 796 
 797  public:
 798   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 799 
 800   // Allocation
 801   static Handle create(TRAPS);
 802 
 803   // Accessors
 804   static oop name(oop field);
 805   static void set_name(oop field, oop value);
 806 
 807   static int index(oop reflect);
 808   static void set_index(oop reflect, int value);
 809 
 810   static int modifiers(oop reflect);
 811   static void set_modifiers(oop reflect, int value);
 812 
 813   static oop executable(oop constructor);
 814   static void set_executable(oop constructor, oop value);
 815 
 816   friend class JavaClasses;
 817 };
 818 
 819 #define MODULE_INJECTED_FIELDS(macro)                            \
 820   macro(java_lang_Module, module_entry, intptr_signature, false)
 821 
 822 class java_lang_Module {
 823   private:
 824     static int loader_offset;
 825     static int name_offset;
 826     static int _module_entry_offset;
 827     static void compute_offsets();
 828 
 829   public:
 830     static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 831 
 832     // Allocation
 833     static Handle create(Handle loader, Handle module_name, TRAPS);
 834 
 835     // Testers
 836     static bool is_instance(oop obj);
 837 
 838     // Accessors
 839     static oop loader(oop module);
 840     static void set_loader(oop module, oop value);
 841 
 842     static oop name(oop module);
 843     static void set_name(oop module, oop value);
 844 
 845     static ModuleEntry* module_entry(oop module);
 846     static void set_module_entry(oop module, ModuleEntry* module_entry);
 847 
 848   friend class JavaClasses;
 849 };
 850 
 851 // Interface to jdk.internal.reflect.ConstantPool objects
 852 class reflect_ConstantPool {
 853  private:
 854   // Note that to reduce dependencies on the JDK we compute these
 855   // offsets at run-time.
 856   static int _oop_offset;
 857 
 858   static void compute_offsets();
 859 
 860  public:
 861   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 862 
 863   // Allocation
 864   static Handle create(TRAPS);
 865 
 866   // Accessors
 867   static void set_cp(oop reflect, ConstantPool* value);
 868   static int oop_offset() {
 869     return _oop_offset;
 870   }
 871 
 872   static ConstantPool* get_cp(oop reflect);
 873 
 874   // Debugging
 875   friend class JavaClasses;
 876 };
 877 
 878 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
 879 class reflect_UnsafeStaticFieldAccessorImpl {
 880  private:
 881   static int _base_offset;
 882   static void compute_offsets();
 883 
 884  public:
 885   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 886 
 887   static int base_offset() {
 888     return _base_offset;
 889   }
 890 
 891   // Debugging
 892   friend class JavaClasses;
 893 };
 894 
 895 // Interface to java.lang primitive type boxing objects:
 896 //  - java.lang.Boolean
 897 //  - java.lang.Character
 898 //  - java.lang.Float
 899 //  - java.lang.Double
 900 //  - java.lang.Byte
 901 //  - java.lang.Short
 902 //  - java.lang.Integer
 903 //  - java.lang.Long
 904 
 905 // This could be separated out into 8 individual classes.
 906 
 907 class java_lang_boxing_object: AllStatic {
 908  private:
 909   enum {
 910    hc_value_offset = 0
 911   };
 912   static int value_offset;
 913   static int long_value_offset;
 914 
 915   static oop initialize_and_allocate(BasicType type, TRAPS);
 916  public:
 917   // Allocation. Returns a boxed value, or NULL for invalid type.
 918   static oop create(BasicType type, jvalue* value, TRAPS);
 919   // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
 920   static BasicType get_value(oop box, jvalue* value);
 921   static BasicType set_value(oop box, jvalue* value);
 922   static BasicType basic_type(oop box);
 923   static bool is_instance(oop box)                 { return basic_type(box) != T_ILLEGAL; }
 924   static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
 925   static void print(oop box, outputStream* st)     { jvalue value;  print(get_value(box, &value), &value, st); }
 926   static void print(BasicType type, jvalue* value, outputStream* st);
 927 
 928   static int value_offset_in_bytes(BasicType type) {
 929     return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
 930                                                     value_offset;
 931   }
 932 
 933   // Debugging
 934   friend class JavaClasses;
 935 };
 936 
 937 
 938 
 939 // Interface to java.lang.ref.Reference objects
 940 
 941 class java_lang_ref_Reference: AllStatic {
 942  public:
 943   enum {
 944    hc_referent_offset   = 0,
 945    hc_queue_offset      = 1,
 946    hc_next_offset       = 2,
 947    hc_discovered_offset = 3  // Is not last, see SoftRefs.
 948   };
 949 
 950   static int referent_offset;
 951   static int queue_offset;
 952   static int next_offset;
 953   static int discovered_offset;
 954 
 955   // Accessors
 956   static inline oop referent(oop ref);
 957   static inline void set_referent(oop ref, oop value);
 958   static inline void set_referent_raw(oop ref, oop value);
 959   static inline HeapWord* referent_addr_raw(oop ref);
 960   static inline oop next(oop ref);
 961   static inline void set_next(oop ref, oop value);
 962   static inline void set_next_raw(oop ref, oop value);
 963   static inline HeapWord* next_addr_raw(oop ref);
 964   static inline oop discovered(oop ref);
 965   static inline void set_discovered(oop ref, oop value);
 966   static inline void set_discovered_raw(oop ref, oop value);
 967   static inline HeapWord* discovered_addr_raw(oop ref);
 968   static inline oop queue(oop ref);
 969   static inline void set_queue(oop ref, oop value);
 970   static bool is_referent_field(oop obj, ptrdiff_t offset);
 971   static inline bool is_phantom(oop ref);
 972 };
 973 
 974 
 975 // Interface to java.lang.ref.SoftReference objects
 976 
 977 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
 978  public:
 979   static int timestamp_offset;
 980   static int static_clock_offset;
 981 
 982   // Accessors
 983   static jlong timestamp(oop ref);
 984 
 985   // Accessors for statics
 986   static jlong clock();
 987   static void set_clock(jlong value);
 988 
 989   static void compute_offsets();
 990   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 991 };
 992 
 993 // Interface to java.lang.invoke.MethodHandle objects
 994 
 995 class MethodHandleEntry;
 996 
 997 class java_lang_invoke_MethodHandle: AllStatic {
 998   friend class JavaClasses;
 999 
1000  private:
1001   static int _type_offset;               // the MethodType of this MH
1002   static int _form_offset;               // the LambdaForm of this MH
1003 
1004   static void compute_offsets();
1005 
1006  public:
1007   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1008 
1009   // Accessors
1010   static oop            type(oop mh);
1011   static void       set_type(oop mh, oop mtype);
1012 
1013   static oop            form(oop mh);
1014   static void       set_form(oop mh, oop lform);
1015 
1016   // Testers
1017   static bool is_subclass(Klass* klass) {
1018     return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
1019   }
1020   static bool is_instance(oop obj);
1021 
1022   // Accessors for code generation:
1023   static int type_offset_in_bytes()             { return _type_offset; }
1024   static int form_offset_in_bytes()             { return _form_offset; }
1025 };
1026 
1027 // Interface to java.lang.invoke.DirectMethodHandle objects
1028 
1029 class java_lang_invoke_DirectMethodHandle: AllStatic {
1030   friend class JavaClasses;
1031 
1032  private:
1033   static int _member_offset;               // the MemberName of this DMH
1034 
1035   static void compute_offsets();
1036 
1037  public:
1038   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1039 
1040   // Accessors
1041   static oop  member(oop mh);
1042 
1043   // Testers
1044   static bool is_subclass(Klass* klass) {
1045     return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1046   }
1047   static bool is_instance(oop obj);
1048 
1049   // Accessors for code generation:
1050   static int member_offset_in_bytes()           { return _member_offset; }
1051 };
1052 
1053 // Interface to java.lang.invoke.LambdaForm objects
1054 // (These are a private interface for managing adapter code generation.)
1055 
1056 class java_lang_invoke_LambdaForm: AllStatic {
1057   friend class JavaClasses;
1058 
1059  private:
1060   static int _vmentry_offset;  // type is MemberName
1061 
1062   static void compute_offsets();
1063 
1064  public:
1065   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1066 
1067   // Accessors
1068   static oop            vmentry(oop lform);
1069   static void       set_vmentry(oop lform, oop invoker);
1070 
1071   // Testers
1072   static bool is_subclass(Klass* klass) {
1073     return SystemDictionary::LambdaForm_klass() != NULL &&
1074       klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1075   }
1076   static bool is_instance(oop obj);
1077 
1078   // Accessors for code generation:
1079   static int vmentry_offset_in_bytes()          { return _vmentry_offset; }
1080 };
1081 
1082 
1083 // Interface to java.lang.invoke.MemberName objects
1084 // (These are a private interface for Java code to query the class hierarchy.)
1085 
1086 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro)                                   \
1087   macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1088   macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1089 
1090 class java_lang_invoke_ResolvedMethodName : AllStatic {
1091   friend class JavaClasses;
1092 
1093   static int _vmtarget_offset;
1094   static int _vmholder_offset;
1095 
1096   static void compute_offsets();
1097  public:
1098   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1099 
1100   static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1101 
1102   static Method* vmtarget(oop resolved_method);
1103   static void set_vmtarget(oop resolved_method, Method* method);
1104 
1105   // find or create resolved member name
1106   static oop find_resolved_method(const methodHandle& m, TRAPS);
1107 
1108   static bool is_instance(oop resolved_method);
1109 };
1110 
1111 
1112 #define MEMBERNAME_INJECTED_FIELDS(macro)                               \
1113   macro(java_lang_invoke_MemberName, vmindex,  intptr_signature, false)
1114 
1115 
1116 class java_lang_invoke_MemberName: AllStatic {
1117   friend class JavaClasses;
1118 
1119  private:
1120   // From java.lang.invoke.MemberName:
1121   //    private Class<?>   clazz;       // class in which the method is defined
1122   //    private String     name;        // may be null if not yet materialized
1123   //    private Object     type;        // may be null if not yet materialized
1124   //    private int        flags;       // modifier bits; see reflect.Modifier
1125   //    private ResolvedMethodName method;    // holds VM-specific target value
1126   //    private intptr_t   vmindex;     // member index within class or interface
1127   static int _clazz_offset;
1128   static int _name_offset;
1129   static int _type_offset;
1130   static int _flags_offset;
1131   static int _method_offset;
1132   static int _vmindex_offset;
1133 
1134   static void compute_offsets();
1135 
1136  public:
1137   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1138   // Accessors
1139   static oop            clazz(oop mname);
1140   static void       set_clazz(oop mname, oop clazz);
1141 
1142   static oop            type(oop mname);
1143   static void       set_type(oop mname, oop type);
1144 
1145   static oop            name(oop mname);
1146   static void       set_name(oop mname, oop name);
1147 
1148   static int            flags(oop mname);
1149   static void       set_flags(oop mname, int flags);
1150 
1151   // Link through ResolvedMethodName field to get Method*
1152   static Method*        vmtarget(oop mname);
1153   static void       set_method(oop mname, oop method);
1154 
1155   static intptr_t       vmindex(oop mname);
1156   static void       set_vmindex(oop mname, intptr_t index);
1157 
1158   // Testers
1159   static bool is_subclass(Klass* klass) {
1160     return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1161   }
1162   static bool is_instance(oop obj);
1163 
1164   static bool is_method(oop obj);
1165 
1166   // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1167   enum {
1168     MN_IS_METHOD            = 0x00010000, // method (not constructor)
1169     MN_IS_CONSTRUCTOR       = 0x00020000, // constructor
1170     MN_IS_FIELD             = 0x00040000, // field
1171     MN_IS_TYPE              = 0x00080000, // nested type
1172     MN_CALLER_SENSITIVE     = 0x00100000, // @CallerSensitive annotation detected
1173     MN_REFERENCE_KIND_SHIFT = 24, // refKind
1174     MN_REFERENCE_KIND_MASK  = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1175     // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1176     MN_SEARCH_SUPERCLASSES  = 0x00100000, // walk super classes
1177     MN_SEARCH_INTERFACES    = 0x00200000  // walk implemented interfaces
1178   };
1179 
1180   // Accessors for code generation:
1181   static int clazz_offset_in_bytes()            { return _clazz_offset; }
1182   static int type_offset_in_bytes()             { return _type_offset; }
1183   static int name_offset_in_bytes()             { return _name_offset; }
1184   static int flags_offset_in_bytes()            { return _flags_offset; }
1185   static int method_offset_in_bytes()           { return _method_offset; }
1186   static int vmindex_offset_in_bytes()          { return _vmindex_offset; }
1187 };
1188 
1189 
1190 // Interface to java.lang.invoke.MethodType objects
1191 
1192 class java_lang_invoke_MethodType: AllStatic {
1193   friend class JavaClasses;
1194 
1195  private:
1196   static int _rtype_offset;
1197   static int _ptypes_offset;
1198 
1199   static void compute_offsets();
1200 
1201  public:
1202   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1203   // Accessors
1204   static oop            rtype(oop mt);
1205   static objArrayOop    ptypes(oop mt);
1206 
1207   static oop            ptype(oop mt, int index);
1208   static int            ptype_count(oop mt);
1209 
1210   static int            ptype_slot_count(oop mt);  // extra counts for long/double
1211   static int            rtype_slot_count(oop mt);  // extra counts for long/double
1212 
1213   static Symbol*        as_signature(oop mt, bool intern_if_not_found, TRAPS);
1214   static void           print_signature(oop mt, outputStream* st);
1215 
1216   static bool is_instance(oop obj);
1217 
1218   static bool equals(oop mt1, oop mt2);
1219 
1220   // Accessors for code generation:
1221   static int rtype_offset_in_bytes()            { return _rtype_offset; }
1222   static int ptypes_offset_in_bytes()           { return _ptypes_offset; }
1223 };
1224 
1225 
1226 // Interface to java.lang.invoke.CallSite objects
1227 
1228 class java_lang_invoke_CallSite: AllStatic {
1229   friend class JavaClasses;
1230 
1231 private:
1232   static int _target_offset;
1233   static int _context_offset;
1234 
1235   static void compute_offsets();
1236 
1237 public:
1238   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1239   // Accessors
1240   static oop              target(          oop site);
1241   static void         set_target(          oop site, oop target);
1242   static void         set_target_volatile( oop site, oop target);
1243 
1244   static oop              context(oop site);
1245 
1246   // Testers
1247   static bool is_subclass(Klass* klass) {
1248     return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1249   }
1250   static bool is_instance(oop obj);
1251 
1252   // Accessors for code generation:
1253   static int target_offset_in_bytes()           { return _target_offset; }
1254 };
1255 
1256 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1257 
1258 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1259   macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false)
1260 
1261 class DependencyContext;
1262 
1263 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1264   friend class JavaClasses;
1265 
1266 private:
1267   static int _vmdependencies_offset;
1268 
1269   static void compute_offsets();
1270 
1271 public:
1272   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1273   // Accessors
1274   static DependencyContext vmdependencies(oop context);
1275 
1276   // Testers
1277   static bool is_subclass(Klass* klass) {
1278     return klass->is_subclass_of(SystemDictionary::Context_klass());
1279   }
1280   static bool is_instance(oop obj);
1281 };
1282 
1283 // Interface to java.security.AccessControlContext objects
1284 
1285 class java_security_AccessControlContext: AllStatic {
1286  private:
1287   // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1288   // so we compute the offsets at startup rather than hard-wiring them.
1289   static int _context_offset;
1290   static int _privilegedContext_offset;
1291   static int _isPrivileged_offset;
1292   static int _isAuthorized_offset;
1293 
1294   static void compute_offsets();
1295  public:
1296   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1297   static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1298 
1299   static bool is_authorized(Handle context);
1300 
1301   // Debugging/initialization
1302   friend class JavaClasses;
1303 };
1304 
1305 
1306 // Interface to java.lang.ClassLoader objects
1307 
1308 #define CLASSLOADER_INJECTED_FIELDS(macro)                            \
1309   macro(java_lang_ClassLoader, loader_data,  intptr_signature, false)
1310 
1311 class java_lang_ClassLoader : AllStatic {
1312  private:
1313   static int _loader_data_offset;
1314   static bool offsets_computed;
1315   static int parent_offset;
1316   static int parallelCapable_offset;
1317   static int name_offset;
1318   static int nameAndId_offset;
1319   static int unnamedModule_offset;
1320 
1321  public:
1322   static void compute_offsets();
1323   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1324 
1325   static ClassLoaderData* loader_data_acquire(oop loader);
1326   static ClassLoaderData* loader_data_raw(oop loader);
1327   static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1328 
1329   static oop parent(oop loader);
1330   static oop name(oop loader);
1331   static oop nameAndId(oop loader);
1332   static bool isAncestor(oop loader, oop cl);
1333 
1334   // Support for parallelCapable field
1335   static bool parallelCapable(oop the_class_mirror);
1336 
1337   static bool is_trusted_loader(oop loader);
1338 
1339   // Return true if this is one of the class loaders associated with
1340   // the generated bytecodes for reflection.
1341   static bool is_reflection_class_loader(oop loader);
1342 
1343   // Fix for 4474172
1344   static oop  non_reflection_class_loader(oop loader);
1345 
1346   // Testers
1347   static bool is_subclass(Klass* klass) {
1348     return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1349   }
1350   static bool is_instance(oop obj);
1351 
1352   static oop unnamedModule(oop loader);
1353 
1354   // Debugging
1355   friend class JavaClasses;
1356   friend class ClassFileParser; // access to number_of_fake_fields
1357 };
1358 
1359 
1360 // Interface to java.lang.System objects
1361 
1362 class java_lang_System : AllStatic {
1363  private:
1364   static int  static_in_offset;
1365   static int static_out_offset;
1366   static int static_err_offset;
1367   static int static_security_offset;
1368 
1369  public:
1370   static int  in_offset_in_bytes();
1371   static int out_offset_in_bytes();
1372   static int err_offset_in_bytes();
1373 
1374   static bool has_security_manager();
1375 
1376   static void compute_offsets();
1377   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1378 
1379   // Debugging
1380   friend class JavaClasses;
1381 };
1382 
1383 
1384 // Interface to java.lang.StackTraceElement objects
1385 
1386 class java_lang_StackTraceElement: AllStatic {
1387  private:
1388   static int declaringClassObject_offset;
1389   static int classLoaderName_offset;
1390   static int moduleName_offset;
1391   static int moduleVersion_offset;
1392   static int declaringClass_offset;
1393   static int methodName_offset;
1394   static int fileName_offset;
1395   static int lineNumber_offset;
1396 
1397   // Setters
1398   static void set_classLoaderName(oop element, oop value);
1399   static void set_moduleName(oop element, oop value);
1400   static void set_moduleVersion(oop element, oop value);
1401   static void set_declaringClass(oop element, oop value);
1402   static void set_methodName(oop element, oop value);
1403   static void set_fileName(oop element, oop value);
1404   static void set_lineNumber(oop element, int value);
1405   static void set_declaringClassObject(oop element, oop value);
1406 
1407  public:
1408   // Create an instance of StackTraceElement
1409   static oop create(const methodHandle& method, int bci, TRAPS);
1410 
1411   static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1412                       int version, int bci, Symbol* name, TRAPS);
1413 
1414   static void compute_offsets();
1415   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1416 
1417   // Debugging
1418   friend class JavaClasses;
1419 };
1420 
1421 
1422 class Backtrace: AllStatic {
1423  public:
1424   // Helper backtrace functions to store bci|version together.
1425   static int merge_bci_and_version(int bci, int version);
1426   static int merge_mid_and_cpref(int mid, int cpref);
1427   static int bci_at(unsigned int merged);
1428   static int version_at(unsigned int merged);
1429   static int mid_at(unsigned int merged);
1430   static int cpref_at(unsigned int merged);
1431   static int get_line_number(const methodHandle& method, int bci);
1432   static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1433 
1434   // Debugging
1435   friend class JavaClasses;
1436 };
1437 
1438 // Interface to java.lang.StackFrameInfo objects
1439 
1440 #define STACKFRAMEINFO_INJECTED_FIELDS(macro)                      \
1441   macro(java_lang_StackFrameInfo, version, short_signature, false)
1442 
1443 class java_lang_StackFrameInfo: AllStatic {
1444 private:
1445   static int _memberName_offset;
1446   static int _bci_offset;
1447   static int _version_offset;
1448 
1449   static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1450 
1451 public:
1452   // Setters
1453   static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1454   static void set_bci(oop info, int value);
1455 
1456   static void set_version(oop info, short value);
1457 
1458   static void compute_offsets();
1459   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1460 
1461   static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1462 
1463   // Debugging
1464   friend class JavaClasses;
1465 };
1466 
1467 class java_lang_LiveStackFrameInfo: AllStatic {
1468  private:
1469   static int _monitors_offset;
1470   static int _locals_offset;
1471   static int _operands_offset;
1472   static int _mode_offset;
1473 
1474  public:
1475   static void set_monitors(oop info, oop value);
1476   static void set_locals(oop info, oop value);
1477   static void set_operands(oop info, oop value);
1478   static void set_mode(oop info, int value);
1479 
1480   static void compute_offsets();
1481   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1482 
1483   // Debugging
1484   friend class JavaClasses;
1485 };
1486 
1487 // Interface to java.lang.AssertionStatusDirectives objects
1488 
1489 class java_lang_AssertionStatusDirectives: AllStatic {
1490  private:
1491   static int classes_offset;
1492   static int classEnabled_offset;
1493   static int packages_offset;
1494   static int packageEnabled_offset;
1495   static int deflt_offset;
1496 
1497  public:
1498   // Setters
1499   static void set_classes(oop obj, oop val);
1500   static void set_classEnabled(oop obj, oop val);
1501   static void set_packages(oop obj, oop val);
1502   static void set_packageEnabled(oop obj, oop val);
1503   static void set_deflt(oop obj, bool val);
1504 
1505   static void compute_offsets();
1506   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1507 
1508   // Debugging
1509   friend class JavaClasses;
1510 };
1511 
1512 
1513 class java_nio_Buffer: AllStatic {
1514  private:
1515   static int _limit_offset;
1516 
1517  public:
1518   static int  limit_offset();
1519   static void compute_offsets();
1520   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1521 };
1522 
1523 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1524  private:
1525   static int  _owner_offset;
1526  public:
1527   static void compute_offsets();
1528   static oop  get_owner_threadObj(oop obj);
1529   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1530 };
1531 
1532 // Use to declare fields that need to be injected into Java classes
1533 // for the JVM to use.  The name_index and signature_index are
1534 // declared in vmSymbols.  The may_be_java flag is used to declare
1535 // fields that might already exist in Java but should be injected if
1536 // they don't.  Otherwise the field is unconditionally injected and
1537 // the JVM uses the injected one.  This is to ensure that name
1538 // collisions don't occur.  In general may_be_java should be false
1539 // unless there's a good reason.
1540 
1541 class InjectedField {
1542  public:
1543   const SystemDictionary::WKID klass_id;
1544   const vmSymbols::SID name_index;
1545   const vmSymbols::SID signature_index;
1546   const bool           may_be_java;
1547 
1548 
1549   Klass* klass() const    { return SystemDictionary::well_known_klass(klass_id); }
1550   Symbol* name() const      { return lookup_symbol(name_index); }
1551   Symbol* signature() const { return lookup_symbol(signature_index); }
1552 
1553   int compute_offset();
1554 
1555   // Find the Symbol for this index
1556   static Symbol* lookup_symbol(int symbol_index) {
1557     return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1558   }
1559 };
1560 
1561 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1562   klass##_##name##_enum,
1563 
1564 #define ALL_INJECTED_FIELDS(macro)          \
1565   CLASS_INJECTED_FIELDS(macro)              \
1566   CLASSLOADER_INJECTED_FIELDS(macro)        \
1567   RESOLVEDMETHOD_INJECTED_FIELDS(macro)     \
1568   MEMBERNAME_INJECTED_FIELDS(macro)         \
1569   CALLSITECONTEXT_INJECTED_FIELDS(macro)    \
1570   STACKFRAMEINFO_INJECTED_FIELDS(macro)     \
1571   MODULE_INJECTED_FIELDS(macro)
1572 
1573 // Interface to hard-coded offset checking
1574 
1575 class JavaClasses : AllStatic {
1576  private:
1577 
1578   static InjectedField _injected_fields[];
1579 
1580   static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1581  public:
1582   enum InjectedFieldID {
1583     ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1584     MAX_enum
1585   };
1586 
1587   static int compute_injected_offset(InjectedFieldID id);
1588 
1589   static void compute_hard_coded_offsets();
1590   static void compute_offsets();
1591   static void check_offsets() PRODUCT_RETURN;
1592   static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1593   static InjectedField* get_injected(Symbol* class_name, int* field_count);
1594 };
1595 
1596 #undef DECLARE_INJECTED_FIELD_ENUM
1597 
1598 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP