rev 50307 : [mq]: cont

   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 
  51 // Interface to java.lang.String objects
  52 
  53 class java_lang_String : AllStatic {
  54  private:
  55   static int value_offset;
  56   static int hash_offset;
  57   static int coder_offset;
  58 
  59   static bool initialized;
  60 
  61   static Handle basic_create(int length, bool byte_arr, TRAPS);
  62 
  63   static inline void set_coder(oop string, jbyte coder);
  64 
  65  public:
  66 
  67   // Coders
  68   enum Coder {
  69     CODER_LATIN1 =  0,
  70     CODER_UTF16  =  1
  71   };
  72 
  73   static void compute_offsets();
  74   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
  75 
  76   // Instance creation
  77   static Handle create_from_unicode(jchar* unicode, int len, TRAPS);
  78   static oop    create_oop_from_unicode(jchar* unicode, int len, TRAPS);
  79   static Handle create_from_str(const char* utf8_str, TRAPS);
  80   static oop    create_oop_from_str(const char* utf8_str, TRAPS);
  81   static Handle create_from_symbol(Symbol* symbol, TRAPS);
  82   static Handle create_from_platform_dependent_str(const char* str, TRAPS);
  83   static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
  84 
  85   static void set_compact_strings(bool value);
  86 
  87   static int value_offset_in_bytes()  {
  88     assert(initialized && (value_offset > 0), "Must be initialized");
  89     return value_offset;
  90   }
  91   static int hash_offset_in_bytes()   {
  92     assert(initialized && (hash_offset > 0), "Must be initialized");
  93     return hash_offset;
  94   }
  95   static int coder_offset_in_bytes()   {
  96     assert(initialized && (coder_offset > 0), "Must be initialized");
  97     return coder_offset;
  98   }
  99 
 100   static inline void set_value_raw(oop string, typeArrayOop buffer);
 101   static inline void set_value(oop string, typeArrayOop buffer);
 102   static inline void set_hash(oop string, unsigned int hash);
 103 
 104   // Accessors
 105   static inline typeArrayOop value(oop java_string);
 106   static inline typeArrayOop value_no_keepalive(oop java_string);
 107   static inline unsigned int hash(oop java_string);
 108   static inline bool is_latin1(oop java_string);
 109   static inline int length(oop java_string);
 110   static int utf8_length(oop java_string);
 111 
 112   // String converters
 113   static char*  as_utf8_string(oop java_string);
 114   static char*  as_utf8_string(oop java_string, char* buf, int buflen);
 115   static char*  as_utf8_string(oop java_string, int start, int len);
 116   static char*  as_utf8_string(oop java_string, int start, int len, char* buf, int buflen);
 117   static char*  as_platform_dependent_str(Handle java_string, TRAPS);
 118   static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
 119   // produce an ascii string with all other values quoted using \u####
 120   static char*  as_quoted_ascii(oop java_string);
 121 
 122   // Compute the hash value for a java.lang.String object which would
 123   // contain the characters passed in.
 124   //
 125   // As the hash value used by the String object itself, in
 126   // String.hashCode().  This value is normally calculated in Java code
 127   // in the String.hashCode method(), but is precomputed for String
 128   // objects in the shared archive file.
 129   // hash P(31) from Kernighan & Ritchie
 130   //
 131   // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
 132   static unsigned int hash_code(const jchar* s, int len) {
 133     unsigned int h = 0;
 134     while (len-- > 0) {
 135       h = 31*h + (unsigned int) *s;
 136       s++;
 137     }
 138     return h;
 139   }
 140 
 141   static unsigned int hash_code(const jbyte* s, int len) {
 142     unsigned int h = 0;
 143     while (len-- > 0) {
 144       h = 31*h + (((unsigned int) *s) & 0xFF);
 145       s++;
 146     }
 147     return h;
 148   }
 149 
 150   static unsigned int hash_code(oop java_string);
 151 
 152   static bool equals(oop java_string, jchar* chars, int len);
 153   static bool equals(oop str1, oop str2);
 154 
 155   // Conversion between '.' and '/' formats
 156   static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
 157   static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
 158 
 159   // Conversion
 160   static Symbol* as_symbol(oop java_string, TRAPS);
 161   static Symbol* as_symbol_or_null(oop java_string);
 162 
 163   // Testers
 164   static bool is_instance(oop obj);
 165   static inline bool is_instance_inlined(oop obj);
 166 
 167   // Debugging
 168   static void print(oop java_string, outputStream* st);
 169   friend class JavaClasses;
 170   friend class StringTable;
 171 };
 172 
 173 
 174 // Interface to java.lang.Class objects
 175 
 176 #define CLASS_INJECTED_FIELDS(macro)                                       \
 177   macro(java_lang_Class, klass,                  intptr_signature,  false) \
 178   macro(java_lang_Class, array_klass,            intptr_signature,  false) \
 179   macro(java_lang_Class, oop_size,               int_signature,     false) \
 180   macro(java_lang_Class, static_oop_field_count, int_signature,     false) \
 181   macro(java_lang_Class, protection_domain,      object_signature,  false) \
 182   macro(java_lang_Class, signers,                object_signature,  false)
 183 
 184 class java_lang_Class : AllStatic {
 185   friend class VMStructs;
 186   friend class JVMCIVMStructs;
 187 
 188  private:
 189   // The fake offsets are added by the class loader when java.lang.Class is loaded
 190 
 191   static int _klass_offset;
 192   static int _array_klass_offset;
 193 
 194   static int _oop_size_offset;
 195   static int _static_oop_field_count_offset;
 196 
 197   static int _protection_domain_offset;
 198   static int _init_lock_offset;
 199   static int _signers_offset;
 200   static int _class_loader_offset;
 201   static int _module_offset;
 202   static int _component_mirror_offset;
 203 
 204   static bool offsets_computed;
 205   static int classRedefinedCount_offset;
 206 
 207   static GrowableArray<Klass*>* _fixup_mirror_list;
 208   static GrowableArray<Klass*>* _fixup_module_field_list;
 209 
 210   static void set_init_lock(oop java_class, oop init_lock);
 211   static void set_protection_domain(oop java_class, oop protection_domain);
 212   static void set_class_loader(oop java_class, oop class_loader);
 213   static void set_component_mirror(oop java_class, oop comp_mirror);
 214   static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
 215   static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
 216  public:
 217   static void allocate_fixup_lists();
 218   static void compute_offsets();
 219 
 220   // Instance creation
 221   static void create_mirror(Klass* k, Handle class_loader, Handle module,
 222                             Handle protection_domain, TRAPS);
 223   static void fixup_mirror(Klass* k, TRAPS);
 224   static oop  create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
 225 
 226   // Archiving
 227   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
 228   static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
 229   static oop  archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
 230   static oop  process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
 231                                       NOT_CDS_JAVA_HEAP_RETURN_(NULL);
 232   static void restore_archived_mirror(Klass *k, Handle mirror, Handle class_loader, Handle module,
 233                                       Handle protection_domain, TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
 234 
 235   static void fixup_module_field(Klass* k, Handle module);
 236 
 237   // Conversion
 238   static Klass* as_Klass(oop java_class);
 239   static void set_klass(oop java_class, Klass* klass);
 240   static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
 241   static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
 242   static void print_signature(oop java_class, outputStream *st);
 243   static const char* as_external_name(oop java_class);
 244   // Testing
 245   static bool is_instance(oop obj);
 246 
 247   static bool is_primitive(oop java_class);
 248   static BasicType primitive_type(oop java_class);
 249   static oop primitive_mirror(BasicType t);
 250   // JVM_NewArray support
 251   static Klass* array_klass_acquire(oop java_class);
 252   static void release_set_array_klass(oop java_class, Klass* klass);
 253   // compiler support for class operations
 254   static int klass_offset_in_bytes()                { return _klass_offset; }
 255   static int array_klass_offset_in_bytes()          { return _array_klass_offset; }
 256   // Support for classRedefinedCount field
 257   static int classRedefinedCount(oop the_class_mirror);
 258   static void set_classRedefinedCount(oop the_class_mirror, int value);
 259 
 260   // Support for embedded per-class oops
 261   static oop  protection_domain(oop java_class);
 262   static oop  init_lock(oop java_class);
 263   static oop  component_mirror(oop java_class);
 264   static objArrayOop  signers(oop java_class);
 265   static void set_signers(oop java_class, objArrayOop signers);
 266 
 267   static oop class_loader(oop java_class);
 268   static void set_module(oop java_class, oop module);
 269   static oop module(oop java_class);
 270 
 271   static int oop_size(oop java_class);
 272   static void set_oop_size(oop java_class, int size);
 273   static int static_oop_field_count(oop java_class);
 274   static void set_static_oop_field_count(oop java_class, int size);
 275 
 276   static GrowableArray<Klass*>* fixup_mirror_list() {
 277     return _fixup_mirror_list;
 278   }
 279   static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
 280     _fixup_mirror_list = v;
 281   }
 282 
 283   static GrowableArray<Klass*>* fixup_module_field_list() {
 284     return _fixup_module_field_list;
 285   }
 286   static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
 287     _fixup_module_field_list = v;
 288   }
 289 
 290   // Debugging
 291   friend class JavaClasses;
 292   friend class InstanceKlass;   // verification code accesses offsets
 293   friend class ClassFileParser; // access to number_of_fake_fields
 294 };
 295 
 296 // Interface to java.lang.Thread objects
 297 
 298 class java_lang_Thread : AllStatic {
 299  private:
 300   // Note that for this class the layout changed between JDK1.2 and JDK1.3,
 301   // so we compute the offsets at startup rather than hard-wiring them.
 302   static int _name_offset;
 303   static int _group_offset;
 304   static int _contextClassLoader_offset;
 305   static int _inheritedAccessControlContext_offset;
 306   static int _priority_offset;
 307   static int _eetop_offset;
 308   static int _daemon_offset;
 309   static int _stillborn_offset;
 310   static int _stackSize_offset;
 311   static int _tid_offset;

 312   static int _thread_status_offset;
 313   static int _park_blocker_offset;
 314   static int _park_event_offset ;
 315 
 316   static void compute_offsets();
 317 
 318  public:
 319   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
 320 
 321   // Instance creation
 322   static oop create();
 323   // Returns the JavaThread associated with the thread obj
 324   static JavaThread* thread(oop java_thread);
 325   // Set JavaThread for instance
 326   static void set_thread(oop java_thread, JavaThread* thread);
 327   // Name
 328   static oop name(oop java_thread);
 329   static void set_name(oop java_thread, oop name);
 330   // Priority
 331   static ThreadPriority priority(oop java_thread);
 332   static void set_priority(oop java_thread, ThreadPriority priority);
 333   // Thread group
 334   static oop  threadGroup(oop java_thread);
 335   // Stillborn
 336   static bool is_stillborn(oop java_thread);
 337   static void set_stillborn(oop java_thread);
 338   // Alive (NOTE: this is not really a field, but provides the correct
 339   // definition without doing a Java call)
 340   static bool is_alive(oop java_thread);
 341   // Daemon
 342   static bool is_daemon(oop java_thread);
 343   static void set_daemon(oop java_thread);
 344   // Context ClassLoader
 345   static oop context_class_loader(oop java_thread);
 346   // Control context
 347   static oop inherited_access_control_context(oop java_thread);
 348   // Stack size hint
 349   static jlong stackSize(oop java_thread);
 350   // Thread ID
 351   static jlong thread_id(oop java_thread);



 352 
 353   // Blocker object responsible for thread parking
 354   static oop park_blocker(oop java_thread);
 355 
 356   // Pointer to type-stable park handler, encoded as jlong.
 357   // Should be set when apparently null
 358   // For details, see unsafe.cpp Unsafe_Unpark
 359   static jlong park_event(oop java_thread);
 360   static bool set_park_event(oop java_thread, jlong ptr);
 361 
 362   // Java Thread Status for JVMTI and M&M use.
 363   // This thread status info is saved in threadStatus field of
 364   // java.lang.Thread java class.
 365   enum ThreadStatus {
 366     NEW                      = 0,
 367     RUNNABLE                 = JVMTI_THREAD_STATE_ALIVE +          // runnable / running
 368                                JVMTI_THREAD_STATE_RUNNABLE,
 369     SLEEPING                 = JVMTI_THREAD_STATE_ALIVE +          // Thread.sleep()
 370                                JVMTI_THREAD_STATE_WAITING +
 371                                JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
 372                                JVMTI_THREAD_STATE_SLEEPING,
 373     IN_OBJECT_WAIT           = JVMTI_THREAD_STATE_ALIVE +          // Object.wait()
 374                                JVMTI_THREAD_STATE_WAITING +
 375                                JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
 376                                JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
 377     IN_OBJECT_WAIT_TIMED     = JVMTI_THREAD_STATE_ALIVE +          // Object.wait(long)
 378                                JVMTI_THREAD_STATE_WAITING +
 379                                JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
 380                                JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
 381     PARKED                   = JVMTI_THREAD_STATE_ALIVE +          // LockSupport.park()
 382                                JVMTI_THREAD_STATE_WAITING +
 383                                JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
 384                                JVMTI_THREAD_STATE_PARKED,
 385     PARKED_TIMED             = JVMTI_THREAD_STATE_ALIVE +          // LockSupport.park(long)
 386                                JVMTI_THREAD_STATE_WAITING +
 387                                JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
 388                                JVMTI_THREAD_STATE_PARKED,
 389     BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE +          // (re-)entering a synchronization block
 390                                JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
 391     TERMINATED               = JVMTI_THREAD_STATE_TERMINATED
 392   };
 393   // Write thread status info to threadStatus field of java.lang.Thread.
 394   static void set_thread_status(oop java_thread_oop, ThreadStatus status);
 395   // Read thread status info from threadStatus field of java.lang.Thread.
 396   static ThreadStatus get_thread_status(oop java_thread_oop);
 397 
 398   static const char*  thread_status_name(oop java_thread_oop);
 399 
 400   // Debugging
 401   friend class JavaClasses;
 402 };
 403 
 404 // Interface to java.lang.ThreadGroup objects
 405 
 406 class java_lang_ThreadGroup : AllStatic {
 407  private:
 408   static int _parent_offset;
 409   static int _name_offset;
 410   static int _threads_offset;
 411   static int _groups_offset;
 412   static int _maxPriority_offset;
 413   static int _destroyed_offset;
 414   static int _daemon_offset;
 415   static int _nthreads_offset;
 416   static int _ngroups_offset;
 417 
 418   static void compute_offsets();
 419 
 420  public:
 421   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
 422 
 423   // parent ThreadGroup
 424   static oop  parent(oop java_thread_group);
 425   // name
 426   static const char* name(oop java_thread_group);
 427   // ("name as oop" accessor is not necessary)
 428   // Number of threads in group
 429   static int nthreads(oop java_thread_group);
 430   // threads
 431   static objArrayOop threads(oop java_thread_group);
 432   // Number of threads in group
 433   static int ngroups(oop java_thread_group);
 434   // groups
 435   static objArrayOop groups(oop java_thread_group);
 436   // maxPriority in group
 437   static ThreadPriority maxPriority(oop java_thread_group);
 438   // Destroyed
 439   static bool is_destroyed(oop java_thread_group);
 440   // Daemon
 441   static bool is_daemon(oop java_thread_group);
 442   // Debugging
 443   friend class JavaClasses;
 444 };
 445 
 446 
 447 
 448 // Interface to java.lang.Throwable objects
 449 
 450 class java_lang_Throwable: AllStatic {
 451   friend class BacktraceBuilder;
 452   friend class BacktraceIterator;
 453 
 454  private:
 455   // Offsets
 456   enum {
 457     hc_backtrace_offset     =  0,
 458     hc_detailMessage_offset =  1,
 459     hc_cause_offset         =  2,  // New since 1.4
 460     hc_stackTrace_offset    =  3   // New since 1.4
 461   };
 462   // Trace constants
 463   enum {
 464     trace_methods_offset = 0,
 465     trace_bcis_offset    = 1,
 466     trace_mirrors_offset = 2,
 467     trace_names_offset   = 3,
 468     trace_next_offset    = 4,
 469     trace_size           = 5,
 470     trace_chunk_size     = 32
 471   };
 472 
 473   static int backtrace_offset;
 474   static int detailMessage_offset;
 475   static int stackTrace_offset;
 476   static int depth_offset;
 477   static int static_unassigned_stacktrace_offset;
 478 
 479   // StackTrace (programmatic access, new since 1.4)
 480   static void clear_stacktrace(oop throwable);
 481   // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
 482   static void set_stacktrace(oop throwable, oop st_element_array);
 483   static oop unassigned_stacktrace();
 484 
 485  public:
 486   // Backtrace
 487   static oop backtrace(oop throwable);
 488   static void set_backtrace(oop throwable, oop value);
 489   static int depth(oop throwable);
 490   static void set_depth(oop throwable, int value);
 491   // Needed by JVMTI to filter out this internal field.
 492   static int get_backtrace_offset() { return backtrace_offset;}
 493   static int get_detailMessage_offset() { return detailMessage_offset;}
 494   // Message
 495   static oop message(oop throwable);
 496   static void set_message(oop throwable, oop value);
 497   static Symbol* detail_message(oop throwable);
 498   static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
 499   static void print_stack_usage(Handle stream);
 500 
 501   static void compute_offsets();
 502   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
 503 
 504   // Allocate space for backtrace (created but stack trace not filled in)
 505   static void allocate_backtrace(Handle throwable, TRAPS);
 506   // Fill in current stack trace for throwable with preallocated backtrace (no GC)
 507   static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
 508   // Fill in current stack trace, can cause GC
 509   static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
 510   static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
 511   // Programmatic access to stack trace
 512   static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
 513   // Printing
 514   static void print(oop throwable, outputStream* st);
 515   static void print_stack_trace(Handle throwable, outputStream* st);
 516   static void java_printStackTrace(Handle throwable, TRAPS);
 517   // Debugging
 518   friend class JavaClasses;
 519 };
 520 
 521 
 522 // Interface to java.lang.reflect.AccessibleObject objects
 523 
 524 class java_lang_reflect_AccessibleObject: AllStatic {
 525  private:
 526   // Note that to reduce dependencies on the JDK we compute these
 527   // offsets at run-time.
 528   static int override_offset;
 529 
 530   static void compute_offsets();
 531 
 532  public:
 533   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
 534 
 535   // Accessors
 536   static jboolean override(oop reflect);
 537   static void set_override(oop reflect, jboolean value);
 538 
 539   // Debugging
 540   friend class JavaClasses;
 541 };
 542 
 543 
 544 // Interface to java.lang.reflect.Method objects
 545 
 546 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
 547  private:
 548   // Note that to reduce dependencies on the JDK we compute these
 549   // offsets at run-time.
 550   static int clazz_offset;
 551   static int name_offset;
 552   static int returnType_offset;
 553   static int parameterTypes_offset;
 554   static int exceptionTypes_offset;
 555   static int slot_offset;
 556   static int modifiers_offset;
 557   static int signature_offset;
 558   static int annotations_offset;
 559   static int parameter_annotations_offset;
 560   static int annotation_default_offset;
 561   static int type_annotations_offset;
 562 
 563   static void compute_offsets();
 564 
 565  public:
 566   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
 567 
 568   // Allocation
 569   static Handle create(TRAPS);
 570 
 571   // Accessors
 572   static oop clazz(oop reflect);
 573   static void set_clazz(oop reflect, oop value);
 574 
 575   static oop name(oop method);
 576   static void set_name(oop method, oop value);
 577 
 578   static oop return_type(oop method);
 579   static void set_return_type(oop method, oop value);
 580 
 581   static oop parameter_types(oop method);
 582   static void set_parameter_types(oop method, oop value);
 583 
 584   static oop exception_types(oop method);
 585   static void set_exception_types(oop method, oop value);
 586 
 587   static int slot(oop reflect);
 588   static void set_slot(oop reflect, int value);
 589 
 590   static int modifiers(oop method);
 591   static void set_modifiers(oop method, int value);
 592 
 593   static bool has_signature_field();
 594   static oop signature(oop method);
 595   static void set_signature(oop method, oop value);
 596 
 597   static bool has_annotations_field();
 598   static oop annotations(oop method);
 599   static void set_annotations(oop method, oop value);
 600 
 601   static bool has_parameter_annotations_field();
 602   static oop parameter_annotations(oop method);
 603   static void set_parameter_annotations(oop method, oop value);
 604 
 605   static bool has_annotation_default_field();
 606   static oop annotation_default(oop method);
 607   static void set_annotation_default(oop method, oop value);
 608 
 609   static bool has_type_annotations_field();
 610   static oop type_annotations(oop method);
 611   static void set_type_annotations(oop method, oop value);
 612 
 613   // Debugging
 614   friend class JavaClasses;
 615 };
 616 
 617 
 618 // Interface to java.lang.reflect.Constructor objects
 619 
 620 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
 621  private:
 622   // Note that to reduce dependencies on the JDK we compute these
 623   // offsets at run-time.
 624   static int clazz_offset;
 625   static int parameterTypes_offset;
 626   static int exceptionTypes_offset;
 627   static int slot_offset;
 628   static int modifiers_offset;
 629   static int signature_offset;
 630   static int annotations_offset;
 631   static int parameter_annotations_offset;
 632   static int type_annotations_offset;
 633 
 634   static void compute_offsets();
 635 
 636  public:
 637   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
 638 
 639   // Allocation
 640   static Handle create(TRAPS);
 641 
 642   // Accessors
 643   static oop clazz(oop reflect);
 644   static void set_clazz(oop reflect, oop value);
 645 
 646   static oop parameter_types(oop constructor);
 647   static void set_parameter_types(oop constructor, oop value);
 648 
 649   static oop exception_types(oop constructor);
 650   static void set_exception_types(oop constructor, oop value);
 651 
 652   static int slot(oop reflect);
 653   static void set_slot(oop reflect, int value);
 654 
 655   static int modifiers(oop constructor);
 656   static void set_modifiers(oop constructor, int value);
 657 
 658   static bool has_signature_field();
 659   static oop signature(oop constructor);
 660   static void set_signature(oop constructor, oop value);
 661 
 662   static bool has_annotations_field();
 663   static oop annotations(oop constructor);
 664   static void set_annotations(oop constructor, oop value);
 665 
 666   static bool has_parameter_annotations_field();
 667   static oop parameter_annotations(oop method);
 668   static void set_parameter_annotations(oop method, oop value);
 669 
 670   static bool has_type_annotations_field();
 671   static oop type_annotations(oop constructor);
 672   static void set_type_annotations(oop constructor, oop value);
 673 
 674   // Debugging
 675   friend class JavaClasses;
 676 };
 677 
 678 
 679 // Interface to java.lang.reflect.Field objects
 680 
 681 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
 682  private:
 683   // Note that to reduce dependencies on the JDK we compute these
 684   // offsets at run-time.
 685   static int clazz_offset;
 686   static int name_offset;
 687   static int type_offset;
 688   static int slot_offset;
 689   static int modifiers_offset;
 690   static int signature_offset;
 691   static int annotations_offset;
 692   static int type_annotations_offset;
 693 
 694   static void compute_offsets();
 695 
 696  public:
 697   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
 698 
 699   // Allocation
 700   static Handle create(TRAPS);
 701 
 702   // Accessors
 703   static oop clazz(oop reflect);
 704   static void set_clazz(oop reflect, oop value);
 705 
 706   static oop name(oop field);
 707   static void set_name(oop field, oop value);
 708 
 709   static oop type(oop field);
 710   static void set_type(oop field, oop value);
 711 
 712   static int slot(oop reflect);
 713   static void set_slot(oop reflect, int value);
 714 
 715   static int modifiers(oop field);
 716   static void set_modifiers(oop field, int value);
 717 
 718   static bool has_signature_field();
 719   static oop signature(oop constructor);
 720   static void set_signature(oop constructor, oop value);
 721 
 722   static bool has_annotations_field();
 723   static oop annotations(oop constructor);
 724   static void set_annotations(oop constructor, oop value);
 725 
 726   static bool has_parameter_annotations_field();
 727   static oop parameter_annotations(oop method);
 728   static void set_parameter_annotations(oop method, oop value);
 729 
 730   static bool has_annotation_default_field();
 731   static oop annotation_default(oop method);
 732   static void set_annotation_default(oop method, oop value);
 733 
 734   static bool has_type_annotations_field();
 735   static oop type_annotations(oop field);
 736   static void set_type_annotations(oop field, oop value);
 737 
 738   // Debugging
 739   friend class JavaClasses;
 740 };
 741 
 742 class java_lang_reflect_Parameter {
 743  private:
 744   // Note that to reduce dependencies on the JDK we compute these
 745   // offsets at run-time.
 746   static int name_offset;
 747   static int modifiers_offset;
 748   static int index_offset;
 749   static int executable_offset;
 750 
 751   static void compute_offsets();
 752 
 753  public:
 754   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
 755 
 756   // Allocation
 757   static Handle create(TRAPS);
 758 
 759   // Accessors
 760   static oop name(oop field);
 761   static void set_name(oop field, oop value);
 762 
 763   static int index(oop reflect);
 764   static void set_index(oop reflect, int value);
 765 
 766   static int modifiers(oop reflect);
 767   static void set_modifiers(oop reflect, int value);
 768 
 769   static oop executable(oop constructor);
 770   static void set_executable(oop constructor, oop value);
 771 
 772   friend class JavaClasses;
 773 };
 774 
 775 #define MODULE_INJECTED_FIELDS(macro)                            \
 776   macro(java_lang_Module, module_entry, intptr_signature, false)
 777 
 778 class java_lang_Module {
 779   private:
 780     static int loader_offset;
 781     static int name_offset;
 782     static int _module_entry_offset;
 783     static void compute_offsets();
 784 
 785   public:
 786     static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
 787 
 788     // Allocation
 789     static Handle create(Handle loader, Handle module_name, TRAPS);
 790 
 791     // Testers
 792     static bool is_instance(oop obj);
 793 
 794     // Accessors
 795     static oop loader(oop module);
 796     static void set_loader(oop module, oop value);
 797 
 798     static oop name(oop module);
 799     static void set_name(oop module, oop value);
 800 
 801     static ModuleEntry* module_entry(oop module);
 802     static void set_module_entry(oop module, ModuleEntry* module_entry);
 803 
 804   friend class JavaClasses;
 805 };
 806 
 807 // Interface to jdk.internal.reflect.ConstantPool objects
 808 class reflect_ConstantPool {
 809  private:
 810   // Note that to reduce dependencies on the JDK we compute these
 811   // offsets at run-time.
 812   static int _oop_offset;
 813 
 814   static void compute_offsets();
 815 
 816  public:
 817   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
 818 
 819   // Allocation
 820   static Handle create(TRAPS);
 821 
 822   // Accessors
 823   static void set_cp(oop reflect, ConstantPool* value);
 824   static int oop_offset() {
 825     return _oop_offset;
 826   }
 827 
 828   static ConstantPool* get_cp(oop reflect);
 829 
 830   // Debugging
 831   friend class JavaClasses;
 832 };
 833 
 834 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
 835 class reflect_UnsafeStaticFieldAccessorImpl {
 836  private:
 837   static int _base_offset;
 838   static void compute_offsets();
 839 
 840  public:
 841   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
 842 
 843   static int base_offset() {
 844     return _base_offset;
 845   }
 846 
 847   // Debugging
 848   friend class JavaClasses;
 849 };
 850 
 851 // Interface to java.lang primitive type boxing objects:
 852 //  - java.lang.Boolean
 853 //  - java.lang.Character
 854 //  - java.lang.Float
 855 //  - java.lang.Double
 856 //  - java.lang.Byte
 857 //  - java.lang.Short
 858 //  - java.lang.Integer
 859 //  - java.lang.Long
 860 
 861 // This could be separated out into 8 individual classes.
 862 
 863 class java_lang_boxing_object: AllStatic {
 864  private:
 865   enum {
 866    hc_value_offset = 0
 867   };
 868   static int value_offset;
 869   static int long_value_offset;
 870 
 871   static oop initialize_and_allocate(BasicType type, TRAPS);
 872  public:
 873   // Allocation. Returns a boxed value, or NULL for invalid type.
 874   static oop create(BasicType type, jvalue* value, TRAPS);
 875   // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
 876   static BasicType get_value(oop box, jvalue* value);
 877   static BasicType set_value(oop box, jvalue* value);
 878   static BasicType basic_type(oop box);
 879   static bool is_instance(oop box)                 { return basic_type(box) != T_ILLEGAL; }
 880   static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
 881   static void print(oop box, outputStream* st)     { jvalue value;  print(get_value(box, &value), &value, st); }
 882   static void print(BasicType type, jvalue* value, outputStream* st);
 883 
 884   static int value_offset_in_bytes(BasicType type) {
 885     return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
 886                                                     value_offset;
 887   }
 888 
 889   // Debugging
 890   friend class JavaClasses;
 891 };
 892 
 893 
 894 
 895 // Interface to java.lang.ref.Reference objects
 896 
 897 class java_lang_ref_Reference: AllStatic {
 898  public:
 899   enum {
 900    hc_referent_offset   = 0,
 901    hc_queue_offset      = 1,
 902    hc_next_offset       = 2,
 903    hc_discovered_offset = 3  // Is not last, see SoftRefs.
 904   };
 905 
 906   static int referent_offset;
 907   static int queue_offset;
 908   static int next_offset;
 909   static int discovered_offset;
 910 
 911   // Accessors
 912   static inline oop referent(oop ref);
 913   static inline void set_referent(oop ref, oop value);
 914   static inline void set_referent_raw(oop ref, oop value);
 915   static inline HeapWord* referent_addr_raw(oop ref);
 916   static inline oop next(oop ref);
 917   static inline void set_next(oop ref, oop value);
 918   static inline void set_next_raw(oop ref, oop value);
 919   static inline HeapWord* next_addr_raw(oop ref);
 920   static inline oop discovered(oop ref);
 921   static inline void set_discovered(oop ref, oop value);
 922   static inline void set_discovered_raw(oop ref, oop value);
 923   static inline HeapWord* discovered_addr_raw(oop ref);
 924   static inline oop queue(oop ref);
 925   static inline void set_queue(oop ref, oop value);
 926   static bool is_referent_field(oop obj, ptrdiff_t offset);
 927   static inline bool is_phantom(oop ref);
 928 };
 929 
 930 
 931 // Interface to java.lang.ref.SoftReference objects
 932 
 933 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
 934  public:
 935   static int timestamp_offset;
 936   static int static_clock_offset;
 937 
 938   // Accessors
 939   static jlong timestamp(oop ref);
 940 
 941   // Accessors for statics
 942   static jlong clock();
 943   static void set_clock(jlong value);
 944 
 945   static void compute_offsets();
 946   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
 947 };
 948 

































































 949 // Interface to java.lang.invoke.MethodHandle objects
 950 
 951 class MethodHandleEntry;
 952 
 953 class java_lang_invoke_MethodHandle: AllStatic {
 954   friend class JavaClasses;
 955 
 956  private:
 957   static int _type_offset;               // the MethodType of this MH
 958   static int _form_offset;               // the LambdaForm of this MH
 959 
 960   static void compute_offsets();
 961 
 962  public:
 963   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
 964 
 965   // Accessors
 966   static oop            type(oop mh);
 967   static void       set_type(oop mh, oop mtype);
 968 
 969   static oop            form(oop mh);
 970   static void       set_form(oop mh, oop lform);
 971 
 972   // Testers
 973   static bool is_subclass(Klass* klass) {
 974     return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
 975   }
 976   static bool is_instance(oop obj);
 977 
 978   // Accessors for code generation:
 979   static int type_offset_in_bytes()             { return _type_offset; }
 980   static int form_offset_in_bytes()             { return _form_offset; }
 981 };
 982 
 983 // Interface to java.lang.invoke.DirectMethodHandle objects
 984 
 985 class java_lang_invoke_DirectMethodHandle: AllStatic {
 986   friend class JavaClasses;
 987 
 988  private:
 989   static int _member_offset;               // the MemberName of this DMH
 990 
 991   static void compute_offsets();
 992 
 993  public:
 994   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
 995 
 996   // Accessors
 997   static oop  member(oop mh);
 998 
 999   // Testers
1000   static bool is_subclass(Klass* klass) {
1001     return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1002   }
1003   static bool is_instance(oop obj);
1004 
1005   // Accessors for code generation:
1006   static int member_offset_in_bytes()           { return _member_offset; }
1007 };
1008 
1009 // Interface to java.lang.invoke.LambdaForm objects
1010 // (These are a private interface for managing adapter code generation.)
1011 
1012 class java_lang_invoke_LambdaForm: AllStatic {
1013   friend class JavaClasses;
1014 
1015  private:
1016   static int _vmentry_offset;  // type is MemberName
1017 
1018   static void compute_offsets();
1019 
1020  public:
1021   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1022 
1023   // Accessors
1024   static oop            vmentry(oop lform);
1025   static void       set_vmentry(oop lform, oop invoker);
1026 
1027   // Testers
1028   static bool is_subclass(Klass* klass) {
1029     return SystemDictionary::LambdaForm_klass() != NULL &&
1030       klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1031   }
1032   static bool is_instance(oop obj);
1033 
1034   // Accessors for code generation:
1035   static int vmentry_offset_in_bytes()          { return _vmentry_offset; }
1036 };
1037 
1038 
1039 // Interface to java.lang.invoke.MemberName objects
1040 // (These are a private interface for Java code to query the class hierarchy.)
1041 
1042 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro)                                   \
1043   macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1044   macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1045 
1046 class java_lang_invoke_ResolvedMethodName : AllStatic {
1047   friend class JavaClasses;
1048 
1049   static int _vmtarget_offset;
1050   static int _vmholder_offset;
1051 
1052   static void compute_offsets();
1053  public:
1054   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1055 
1056   static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1057 
1058   static Method* vmtarget(oop resolved_method);
1059   static void set_vmtarget(oop resolved_method, Method* method);
1060 
1061   // find or create resolved member name
1062   static oop find_resolved_method(const methodHandle& m, TRAPS);
1063 
1064   static bool is_instance(oop resolved_method);
1065 };
1066 
1067 
1068 #define MEMBERNAME_INJECTED_FIELDS(macro)                               \
1069   macro(java_lang_invoke_MemberName, vmindex,  intptr_signature, false)
1070 
1071 
1072 class java_lang_invoke_MemberName: AllStatic {
1073   friend class JavaClasses;
1074 
1075  private:
1076   // From java.lang.invoke.MemberName:
1077   //    private Class<?>   clazz;       // class in which the method is defined
1078   //    private String     name;        // may be null if not yet materialized
1079   //    private Object     type;        // may be null if not yet materialized
1080   //    private int        flags;       // modifier bits; see reflect.Modifier
1081   //    private ResolvedMethodName method;    // holds VM-specific target value
1082   //    private intptr_t   vmindex;     // member index within class or interface
1083   static int _clazz_offset;
1084   static int _name_offset;
1085   static int _type_offset;
1086   static int _flags_offset;
1087   static int _method_offset;
1088   static int _vmindex_offset;
1089 
1090   static void compute_offsets();
1091 
1092  public:
1093   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1094   // Accessors
1095   static oop            clazz(oop mname);
1096   static void       set_clazz(oop mname, oop clazz);
1097 
1098   static oop            type(oop mname);
1099   static void       set_type(oop mname, oop type);
1100 
1101   static oop            name(oop mname);
1102   static void       set_name(oop mname, oop name);
1103 
1104   static int            flags(oop mname);
1105   static void       set_flags(oop mname, int flags);
1106 
1107   // Link through ResolvedMethodName field to get Method*
1108   static Method*        vmtarget(oop mname);
1109   static void       set_method(oop mname, oop method);
1110 
1111   static intptr_t       vmindex(oop mname);
1112   static void       set_vmindex(oop mname, intptr_t index);
1113 
1114   // Testers
1115   static bool is_subclass(Klass* klass) {
1116     return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1117   }
1118   static bool is_instance(oop obj);
1119 
1120   static bool is_method(oop obj);
1121 
1122   // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1123   enum {
1124     MN_IS_METHOD            = 0x00010000, // method (not constructor)
1125     MN_IS_CONSTRUCTOR       = 0x00020000, // constructor
1126     MN_IS_FIELD             = 0x00040000, // field
1127     MN_IS_TYPE              = 0x00080000, // nested type
1128     MN_CALLER_SENSITIVE     = 0x00100000, // @CallerSensitive annotation detected
1129     MN_REFERENCE_KIND_SHIFT = 24, // refKind
1130     MN_REFERENCE_KIND_MASK  = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1131     // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1132     MN_SEARCH_SUPERCLASSES  = 0x00100000, // walk super classes
1133     MN_SEARCH_INTERFACES    = 0x00200000  // walk implemented interfaces
1134   };
1135 
1136   // Accessors for code generation:
1137   static int clazz_offset_in_bytes()            { return _clazz_offset; }
1138   static int type_offset_in_bytes()             { return _type_offset; }
1139   static int name_offset_in_bytes()             { return _name_offset; }
1140   static int flags_offset_in_bytes()            { return _flags_offset; }
1141   static int method_offset_in_bytes()           { return _method_offset; }
1142   static int vmindex_offset_in_bytes()          { return _vmindex_offset; }
1143 };
1144 
1145 
1146 // Interface to java.lang.invoke.MethodType objects
1147 
1148 class java_lang_invoke_MethodType: AllStatic {
1149   friend class JavaClasses;
1150 
1151  private:
1152   static int _rtype_offset;
1153   static int _ptypes_offset;
1154 
1155   static void compute_offsets();
1156 
1157  public:
1158   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1159   // Accessors
1160   static oop            rtype(oop mt);
1161   static objArrayOop    ptypes(oop mt);
1162 
1163   static oop            ptype(oop mt, int index);
1164   static int            ptype_count(oop mt);
1165 
1166   static int            ptype_slot_count(oop mt);  // extra counts for long/double
1167   static int            rtype_slot_count(oop mt);  // extra counts for long/double
1168 
1169   static Symbol*        as_signature(oop mt, bool intern_if_not_found, TRAPS);
1170   static void           print_signature(oop mt, outputStream* st);
1171 
1172   static bool is_instance(oop obj);
1173 
1174   static bool equals(oop mt1, oop mt2);
1175 
1176   // Accessors for code generation:
1177   static int rtype_offset_in_bytes()            { return _rtype_offset; }
1178   static int ptypes_offset_in_bytes()           { return _ptypes_offset; }
1179 };
1180 
1181 
1182 // Interface to java.lang.invoke.CallSite objects
1183 
1184 class java_lang_invoke_CallSite: AllStatic {
1185   friend class JavaClasses;
1186 
1187 private:
1188   static int _target_offset;
1189   static int _context_offset;
1190 
1191   static void compute_offsets();
1192 
1193 public:
1194   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1195   // Accessors
1196   static oop              target(          oop site);
1197   static void         set_target(          oop site, oop target);
1198   static void         set_target_volatile( oop site, oop target);
1199 
1200   static oop              context(oop site);
1201 
1202   // Testers
1203   static bool is_subclass(Klass* klass) {
1204     return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1205   }
1206   static bool is_instance(oop obj);
1207 
1208   // Accessors for code generation:
1209   static int target_offset_in_bytes()           { return _target_offset; }
1210 };
1211 
1212 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1213 
1214 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1215   macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false)
1216 
1217 class DependencyContext;
1218 
1219 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1220   friend class JavaClasses;
1221 
1222 private:
1223   static int _vmdependencies_offset;
1224 
1225   static void compute_offsets();
1226 
1227 public:
1228   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1229   // Accessors
1230   static DependencyContext vmdependencies(oop context);
1231 
1232   // Testers
1233   static bool is_subclass(Klass* klass) {
1234     return klass->is_subclass_of(SystemDictionary::Context_klass());
1235   }
1236   static bool is_instance(oop obj);
1237 };
1238 
1239 // Interface to java.security.AccessControlContext objects
1240 
1241 class java_security_AccessControlContext: AllStatic {
1242  private:
1243   // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1244   // so we compute the offsets at startup rather than hard-wiring them.
1245   static int _context_offset;
1246   static int _privilegedContext_offset;
1247   static int _isPrivileged_offset;
1248   static int _isAuthorized_offset;
1249 
1250   static void compute_offsets();
1251  public:
1252   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1253   static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1254 
1255   static bool is_authorized(Handle context);
1256 
1257   // Debugging/initialization
1258   friend class JavaClasses;
1259 };
1260 
1261 
1262 // Interface to java.lang.ClassLoader objects
1263 
1264 #define CLASSLOADER_INJECTED_FIELDS(macro)                            \
1265   macro(java_lang_ClassLoader, loader_data,  intptr_signature, false)
1266 
1267 class java_lang_ClassLoader : AllStatic {
1268  private:
1269   static int _loader_data_offset;
1270   static bool offsets_computed;
1271   static int parent_offset;
1272   static int parallelCapable_offset;
1273   static int name_offset;
1274   static int unnamedModule_offset;
1275 
1276  public:
1277   static void compute_offsets();
1278   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1279 
1280   static ClassLoaderData* loader_data(oop loader);
1281   static ClassLoaderData* cmpxchg_loader_data(ClassLoaderData* new_data, oop loader, ClassLoaderData* expected_data);
1282 
1283   static oop parent(oop loader);
1284   static oop name(oop loader);
1285   static bool isAncestor(oop loader, oop cl);
1286 
1287   // Support for parallelCapable field
1288   static bool parallelCapable(oop the_class_mirror);
1289 
1290   static bool is_trusted_loader(oop loader);
1291 
1292   // Return true if this is one of the class loaders associated with
1293   // the generated bytecodes for reflection.
1294   static bool is_reflection_class_loader(oop loader);
1295 
1296   // Fix for 4474172
1297   static oop  non_reflection_class_loader(oop loader);
1298 
1299   // Testers
1300   static bool is_subclass(Klass* klass) {
1301     return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1302   }
1303   static bool is_instance(oop obj);
1304 
1305   static oop unnamedModule(oop loader);
1306 
1307   // Debugging
1308   friend class JavaClasses;
1309   friend class ClassFileParser; // access to number_of_fake_fields
1310 
1311   // Describe ClassLoader for exceptions, tracing ...
1312   // Prints "<name>" (instance of <classname>, child of "<name>" <classname>).
1313   // If a classloader has no name, it prints <unnamed> instead. The output
1314   // for well known loaders (system/platform) is abbreviated.
1315   static const char* describe_external(const oop loader);
1316 };
1317 
1318 
1319 // Interface to java.lang.System objects
1320 
1321 class java_lang_System : AllStatic {
1322  private:
1323   static int  static_in_offset;
1324   static int static_out_offset;
1325   static int static_err_offset;
1326   static int static_security_offset;
1327 
1328  public:
1329   static int  in_offset_in_bytes();
1330   static int out_offset_in_bytes();
1331   static int err_offset_in_bytes();
1332 
1333   static bool has_security_manager();
1334 
1335   static void compute_offsets();
1336   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1337 
1338   // Debugging
1339   friend class JavaClasses;
1340 };
1341 
1342 
1343 // Interface to java.lang.StackTraceElement objects
1344 
1345 class java_lang_StackTraceElement: AllStatic {
1346  private:
1347   static int declaringClassObject_offset;
1348   static int classLoaderName_offset;
1349   static int moduleName_offset;
1350   static int moduleVersion_offset;
1351   static int declaringClass_offset;
1352   static int methodName_offset;
1353   static int fileName_offset;
1354   static int lineNumber_offset;
1355 
1356   // Setters
1357   static void set_classLoaderName(oop element, oop value);
1358   static void set_moduleName(oop element, oop value);
1359   static void set_moduleVersion(oop element, oop value);
1360   static void set_declaringClass(oop element, oop value);
1361   static void set_methodName(oop element, oop value);
1362   static void set_fileName(oop element, oop value);
1363   static void set_lineNumber(oop element, int value);
1364   static void set_declaringClassObject(oop element, oop value);
1365 
1366  public:
1367   // Create an instance of StackTraceElement
1368   static oop create(const methodHandle& method, int bci, TRAPS);
1369 
1370   static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1371                       int version, int bci, Symbol* name, TRAPS);
1372 
1373   static void compute_offsets();
1374   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1375 
1376   // Debugging
1377   friend class JavaClasses;
1378 };
1379 
1380 
1381 class Backtrace: AllStatic {
1382  public:
1383   // Helper backtrace functions to store bci|version together.
1384   static int merge_bci_and_version(int bci, int version);
1385   static int merge_mid_and_cpref(int mid, int cpref);
1386   static int bci_at(unsigned int merged);
1387   static int version_at(unsigned int merged);
1388   static int mid_at(unsigned int merged);
1389   static int cpref_at(unsigned int merged);
1390   static int get_line_number(const methodHandle& method, int bci);
1391   static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1392 
1393   // Debugging
1394   friend class JavaClasses;
1395 };
1396 
1397 // Interface to java.lang.StackFrameInfo objects
1398 
1399 #define STACKFRAMEINFO_INJECTED_FIELDS(macro)                      \
1400   macro(java_lang_StackFrameInfo, version, short_signature, false)
1401 
1402 class java_lang_StackFrameInfo: AllStatic {
1403 private:
1404   static int _memberName_offset;
1405   static int _bci_offset;
1406   static int _version_offset;
1407 
1408   static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1409 
1410 public:
1411   // Setters
1412   static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1413   static void set_bci(oop info, int value);
1414 
1415   static void set_version(oop info, short value);
1416 
1417   static void compute_offsets();
1418   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1419 
1420   static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1421 
1422   // Debugging
1423   friend class JavaClasses;
1424 };
1425 
1426 class java_lang_LiveStackFrameInfo: AllStatic {
1427  private:
1428   static int _monitors_offset;
1429   static int _locals_offset;
1430   static int _operands_offset;
1431   static int _mode_offset;
1432 
1433  public:
1434   static void set_monitors(oop info, oop value);
1435   static void set_locals(oop info, oop value);
1436   static void set_operands(oop info, oop value);
1437   static void set_mode(oop info, int value);
1438 
1439   static void compute_offsets();
1440   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1441 
1442   // Debugging
1443   friend class JavaClasses;
1444 };
1445 
1446 // Interface to java.lang.AssertionStatusDirectives objects
1447 
1448 class java_lang_AssertionStatusDirectives: AllStatic {
1449  private:
1450   static int classes_offset;
1451   static int classEnabled_offset;
1452   static int packages_offset;
1453   static int packageEnabled_offset;
1454   static int deflt_offset;
1455 
1456  public:
1457   // Setters
1458   static void set_classes(oop obj, oop val);
1459   static void set_classEnabled(oop obj, oop val);
1460   static void set_packages(oop obj, oop val);
1461   static void set_packageEnabled(oop obj, oop val);
1462   static void set_deflt(oop obj, bool val);
1463 
1464   static void compute_offsets();
1465   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1466 
1467   // Debugging
1468   friend class JavaClasses;
1469 };
1470 
1471 
1472 class java_nio_Buffer: AllStatic {
1473  private:
1474   static int _limit_offset;
1475 
1476  public:
1477   static int  limit_offset();
1478   static void compute_offsets();
1479   static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1480 };
1481 
1482 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1483  private:
1484   static int  _owner_offset;
1485  public:
1486   static void initialize(TRAPS);
1487   static oop  get_owner_threadObj(oop obj);
1488 };
1489 
1490 // Use to declare fields that need to be injected into Java classes
1491 // for the JVM to use.  The name_index and signature_index are
1492 // declared in vmSymbols.  The may_be_java flag is used to declare
1493 // fields that might already exist in Java but should be injected if
1494 // they don't.  Otherwise the field is unconditionally injected and
1495 // the JVM uses the injected one.  This is to ensure that name
1496 // collisions don't occur.  In general may_be_java should be false
1497 // unless there's a good reason.
1498 
1499 class InjectedField {
1500  public:
1501   const SystemDictionary::WKID klass_id;
1502   const vmSymbols::SID name_index;
1503   const vmSymbols::SID signature_index;
1504   const bool           may_be_java;
1505 
1506 
1507   Klass* klass() const    { return SystemDictionary::well_known_klass(klass_id); }
1508   Symbol* name() const      { return lookup_symbol(name_index); }
1509   Symbol* signature() const { return lookup_symbol(signature_index); }
1510 
1511   int compute_offset();
1512 
1513   // Find the Symbol for this index
1514   static Symbol* lookup_symbol(int symbol_index) {
1515     return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1516   }
1517 };
1518 
1519 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1520   klass##_##name##_enum,
1521 
1522 #define ALL_INJECTED_FIELDS(macro)          \
1523   CLASS_INJECTED_FIELDS(macro)              \
1524   CLASSLOADER_INJECTED_FIELDS(macro)        \
1525   RESOLVEDMETHOD_INJECTED_FIELDS(macro)     \
1526   MEMBERNAME_INJECTED_FIELDS(macro)         \
1527   CALLSITECONTEXT_INJECTED_FIELDS(macro)    \
1528   STACKFRAMEINFO_INJECTED_FIELDS(macro)     \
1529   MODULE_INJECTED_FIELDS(macro)
1530 
1531 // Interface to hard-coded offset checking
1532 
1533 class JavaClasses : AllStatic {
1534  private:
1535 
1536   static InjectedField _injected_fields[];
1537 
1538   static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1539  public:
1540   enum InjectedFieldID {
1541     ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1542     MAX_enum
1543   };
1544 
1545   static int compute_injected_offset(InjectedFieldID id);
1546 
1547   static void compute_hard_coded_offsets();
1548   static void compute_offsets();
1549   static void check_offsets() PRODUCT_RETURN;
1550 
1551   static InjectedField* get_injected(Symbol* class_name, int* field_count);
1552 };
1553 
1554 #undef DECLARE_INJECTED_FIELD_ENUM
1555 
1556 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP
--- EOF ---