1 /*
   2  * Copyright (c) 1997, 2016, 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 
  75   // Instance creation
  76   static Handle create_from_unicode(jchar* unicode, int len, TRAPS);
  77   static oop    create_oop_from_unicode(jchar* unicode, int len, TRAPS);
  78   static Handle create_from_str(const char* utf8_str, TRAPS);
  79   static oop    create_oop_from_str(const char* utf8_str, TRAPS);
  80   static Handle create_from_symbol(Symbol* symbol, TRAPS);
  81   static Handle create_from_platform_dependent_str(const char* str, TRAPS);
  82   static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
  83 
  84   static bool has_hash_field()  {
  85     assert(initialized, "Must be initialized");
  86     return (hash_offset > 0);
  87   }
  88   static bool has_coder_field()  {
  89     assert(initialized, "Must be initialized");
  90     return (coder_offset > 0);
  91   }
  92 
  93   static void set_compact_strings(bool value);
  94 
  95   static int value_offset_in_bytes()  {
  96     assert(initialized && (value_offset > 0), "Must be initialized");
  97     return value_offset;
  98   }
  99   static int hash_offset_in_bytes()   {
 100     assert(initialized && (hash_offset > 0), "Must be initialized");
 101     return hash_offset;
 102   }
 103   static int coder_offset_in_bytes()   {
 104     assert(initialized && (coder_offset > 0), "Must be initialized");
 105     return coder_offset;
 106   }
 107 
 108   static inline void set_value_raw(oop string, typeArrayOop buffer);
 109   static inline void set_value(oop string, typeArrayOop buffer);
 110   static inline void set_hash(oop string, unsigned int hash);
 111 
 112   // Accessors
 113   static inline typeArrayOop value(oop java_string);
 114   static inline unsigned int hash(oop java_string);
 115   static inline bool is_latin1(oop java_string);
 116   static inline int length(oop java_string);
 117   static int utf8_length(oop java_string);
 118 
 119   // String converters
 120   static char*  as_utf8_string(oop java_string);
 121   static char*  as_utf8_string(oop java_string, char* buf, int buflen);
 122   static char*  as_utf8_string(oop java_string, int start, int len);
 123   static char*  as_utf8_string(oop java_string, int start, int len, char* buf, int buflen);
 124   static char*  as_platform_dependent_str(Handle java_string, TRAPS);
 125   static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
 126   // produce an ascii string with all other values quoted using \u####
 127   static char*  as_quoted_ascii(oop java_string);
 128 
 129   // Compute the hash value for a java.lang.String object which would
 130   // contain the characters passed in.
 131   //
 132   // As the hash value used by the String object itself, in
 133   // String.hashCode().  This value is normally calculated in Java code
 134   // in the String.hashCode method(), but is precomputed for String
 135   // objects in the shared archive file.
 136   // hash P(31) from Kernighan & Ritchie
 137   //
 138   // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
 139   static unsigned int hash_code(const jchar* s, int len) {
 140     unsigned int h = 0;
 141     while (len-- > 0) {
 142       h = 31*h + (unsigned int) *s;
 143       s++;
 144     }
 145     return h;
 146   }
 147 
 148   static unsigned int hash_code(const jbyte* s, int len) {
 149     unsigned int h = 0;
 150     while (len-- > 0) {
 151       h = 31*h + (((unsigned int) *s) & 0xFF);
 152       s++;
 153     }
 154     return h;
 155   }
 156 
 157   static unsigned int hash_code(oop java_string);
 158   static unsigned int latin1_hash_code(typeArrayOop value, int len);
 159 
 160   // This is the string hash code used by the StringTable, which may be
 161   // the same as String.hashCode or an alternate hash code.
 162   static unsigned int hash_string(oop java_string);
 163 
 164   static bool equals(oop java_string, jchar* chars, int len);
 165   static bool equals(oop str1, oop str2);
 166 
 167   // Conversion between '.' and '/' formats
 168   static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
 169   static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
 170 
 171   // Conversion
 172   static Symbol* as_symbol(Handle java_string, TRAPS);
 173   static Symbol* as_symbol_or_null(oop java_string);
 174 
 175   // Testers
 176   static bool is_instance(oop obj);
 177   static inline bool is_instance_inlined(oop obj);
 178 
 179   // Debugging
 180   static void print(oop java_string, outputStream* st);
 181   friend class JavaClasses;
 182   friend class StringTable;
 183 };
 184 
 185 
 186 // Interface to java.lang.Class objects
 187 
 188 #define CLASS_INJECTED_FIELDS(macro)                                       \
 189   macro(java_lang_Class, klass,                  intptr_signature,  false) \
 190   macro(java_lang_Class, array_klass,            intptr_signature,  false) \
 191   macro(java_lang_Class, oop_size,               int_signature,     false) \
 192   macro(java_lang_Class, static_oop_field_count, int_signature,     false) \
 193   macro(java_lang_Class, protection_domain,      object_signature,  false) \
 194   macro(java_lang_Class, signers,                object_signature,  false)
 195 
 196 class java_lang_Class : AllStatic {
 197   friend class VMStructs;
 198   friend class JVMCIVMStructs;
 199 
 200  private:
 201   // The fake offsets are added by the class loader when java.lang.Class is loaded
 202 
 203   static int _klass_offset;
 204   static int _array_klass_offset;
 205 
 206   static int _oop_size_offset;
 207   static int _static_oop_field_count_offset;
 208 
 209   static int _protection_domain_offset;
 210   static int _init_lock_offset;
 211   static int _signers_offset;
 212   static int _class_loader_offset;
 213   static int _component_mirror_offset;
 214 
 215   static bool offsets_computed;
 216   static int classRedefinedCount_offset;
 217 
 218   static GrowableArray<Klass*>* _fixup_mirror_list;
 219 
 220   static void set_init_lock(oop java_class, oop init_lock);
 221   static void set_protection_domain(oop java_class, oop protection_domain);
 222   static void set_class_loader(oop java_class, oop class_loader);
 223   static void set_component_mirror(oop java_class, oop comp_mirror);
 224   static void initialize_mirror_fields(KlassHandle k, Handle mirror, Handle protection_domain, TRAPS);
 225  public:
 226   static void compute_offsets();
 227 
 228   // Instance creation
 229   static void create_mirror(KlassHandle k, Handle class_loader,
 230                             Handle protection_domain, TRAPS);
 231   static void fixup_mirror(KlassHandle k, TRAPS);
 232   static oop  create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
 233   // Conversion
 234   static Klass* as_Klass(oop java_class);
 235   static void set_klass(oop java_class, Klass* klass);
 236   static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
 237   static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) {
 238     Klass* refk_oop = NULL;
 239     BasicType result = as_BasicType(java_class, &refk_oop);
 240     (*reference_klass) = KlassHandle(refk_oop);
 241     return result;
 242   }
 243   static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
 244   static void print_signature(oop java_class, outputStream *st);
 245   static const char* as_external_name(oop java_class);
 246   // Testing
 247   static bool is_instance(oop obj);
 248 
 249   static bool is_primitive(oop java_class);
 250   static BasicType primitive_type(oop java_class);
 251   static oop primitive_mirror(BasicType t);
 252   // JVM_NewArray support
 253   static Klass* array_klass(oop java_class);
 254   static void set_array_klass(oop java_class, Klass* klass);
 255   // compiler support for class operations
 256   static int klass_offset_in_bytes()                { return _klass_offset; }
 257   static int array_klass_offset_in_bytes()          { return _array_klass_offset; }
 258   // Support for classRedefinedCount field
 259   static int classRedefinedCount(oop the_class_mirror);
 260   static void set_classRedefinedCount(oop the_class_mirror, int value);
 261 
 262   // Support for embedded per-class oops
 263   static oop  protection_domain(oop java_class);
 264   static oop  init_lock(oop java_class);
 265   static oop  component_mirror(oop java_class);
 266   static objArrayOop  signers(oop java_class);
 267   static void set_signers(oop java_class, objArrayOop signers);
 268 
 269   static oop class_loader(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   // Debugging
 283   friend class JavaClasses;
 284   friend class InstanceKlass;   // verification code accesses offsets
 285   friend class ClassFileParser; // access to number_of_fake_fields
 286 };
 287 
 288 // Interface to java.lang.Thread objects
 289 
 290 class java_lang_Thread : AllStatic {
 291  private:
 292   // Note that for this class the layout changed between JDK1.2 and JDK1.3,
 293   // so we compute the offsets at startup rather than hard-wiring them.
 294   static int _name_offset;
 295   static int _group_offset;
 296   static int _contextClassLoader_offset;
 297   static int _inheritedAccessControlContext_offset;
 298   static int _priority_offset;
 299   static int _eetop_offset;
 300   static int _daemon_offset;
 301   static int _stillborn_offset;
 302   static int _stackSize_offset;
 303   static int _tid_offset;
 304   static int _thread_status_offset;
 305   static int _park_blocker_offset;
 306   static int _park_event_offset ;
 307 
 308   static void compute_offsets();
 309 
 310  public:
 311   // Instance creation
 312   static oop create();
 313   // Returns the JavaThread associated with the thread obj
 314   static JavaThread* thread(oop java_thread);
 315   // Set JavaThread for instance
 316   static void set_thread(oop java_thread, JavaThread* thread);
 317   // Name
 318   static oop name(oop java_thread);
 319   static void set_name(oop java_thread, oop name);
 320   // Priority
 321   static ThreadPriority priority(oop java_thread);
 322   static void set_priority(oop java_thread, ThreadPriority priority);
 323   // Thread group
 324   static oop  threadGroup(oop java_thread);
 325   // Stillborn
 326   static bool is_stillborn(oop java_thread);
 327   static void set_stillborn(oop java_thread);
 328   // Alive (NOTE: this is not really a field, but provides the correct
 329   // definition without doing a Java call)
 330   static bool is_alive(oop java_thread);
 331   // Daemon
 332   static bool is_daemon(oop java_thread);
 333   static void set_daemon(oop java_thread);
 334   // Context ClassLoader
 335   static oop context_class_loader(oop java_thread);
 336   // Control context
 337   static oop inherited_access_control_context(oop java_thread);
 338   // Stack size hint
 339   static jlong stackSize(oop java_thread);
 340   // Thread ID
 341   static jlong thread_id(oop java_thread);
 342 
 343   // Blocker object responsible for thread parking
 344   static oop park_blocker(oop java_thread);
 345 
 346   // Pointer to type-stable park handler, encoded as jlong.
 347   // Should be set when apparently null
 348   // For details, see unsafe.cpp Unsafe_Unpark
 349   static jlong park_event(oop java_thread);
 350   static bool set_park_event(oop java_thread, jlong ptr);
 351 
 352   // Java Thread Status for JVMTI and M&M use.
 353   // This thread status info is saved in threadStatus field of
 354   // java.lang.Thread java class.
 355   enum ThreadStatus {
 356     NEW                      = 0,
 357     RUNNABLE                 = JVMTI_THREAD_STATE_ALIVE +          // runnable / running
 358                                JVMTI_THREAD_STATE_RUNNABLE,
 359     SLEEPING                 = JVMTI_THREAD_STATE_ALIVE +          // Thread.sleep()
 360                                JVMTI_THREAD_STATE_WAITING +
 361                                JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
 362                                JVMTI_THREAD_STATE_SLEEPING,
 363     IN_OBJECT_WAIT           = JVMTI_THREAD_STATE_ALIVE +          // Object.wait()
 364                                JVMTI_THREAD_STATE_WAITING +
 365                                JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
 366                                JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
 367     IN_OBJECT_WAIT_TIMED     = JVMTI_THREAD_STATE_ALIVE +          // Object.wait(long)
 368                                JVMTI_THREAD_STATE_WAITING +
 369                                JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
 370                                JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
 371     PARKED                   = JVMTI_THREAD_STATE_ALIVE +          // LockSupport.park()
 372                                JVMTI_THREAD_STATE_WAITING +
 373                                JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
 374                                JVMTI_THREAD_STATE_PARKED,
 375     PARKED_TIMED             = JVMTI_THREAD_STATE_ALIVE +          // LockSupport.park(long)
 376                                JVMTI_THREAD_STATE_WAITING +
 377                                JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
 378                                JVMTI_THREAD_STATE_PARKED,
 379     BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE +          // (re-)entering a synchronization block
 380                                JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
 381     TERMINATED               = JVMTI_THREAD_STATE_TERMINATED
 382   };
 383   // Write thread status info to threadStatus field of java.lang.Thread.
 384   static void set_thread_status(oop java_thread_oop, ThreadStatus status);
 385   // Read thread status info from threadStatus field of java.lang.Thread.
 386   static ThreadStatus get_thread_status(oop java_thread_oop);
 387 
 388   static const char*  thread_status_name(oop java_thread_oop);
 389 
 390   // Debugging
 391   friend class JavaClasses;
 392 };
 393 
 394 // Interface to java.lang.ThreadGroup objects
 395 
 396 class java_lang_ThreadGroup : AllStatic {
 397  private:
 398   static int _parent_offset;
 399   static int _name_offset;
 400   static int _threads_offset;
 401   static int _groups_offset;
 402   static int _maxPriority_offset;
 403   static int _destroyed_offset;
 404   static int _daemon_offset;
 405   static int _vmAllowSuspension_offset;
 406   static int _nthreads_offset;
 407   static int _ngroups_offset;
 408 
 409   static void compute_offsets();
 410 
 411  public:
 412   // parent ThreadGroup
 413   static oop  parent(oop java_thread_group);
 414   // name
 415   static const char* name(oop java_thread_group);
 416   // ("name as oop" accessor is not necessary)
 417   // Number of threads in group
 418   static int nthreads(oop java_thread_group);
 419   // threads
 420   static objArrayOop threads(oop java_thread_group);
 421   // Number of threads in group
 422   static int ngroups(oop java_thread_group);
 423   // groups
 424   static objArrayOop groups(oop java_thread_group);
 425   // maxPriority in group
 426   static ThreadPriority maxPriority(oop java_thread_group);
 427   // Destroyed
 428   static bool is_destroyed(oop java_thread_group);
 429   // Daemon
 430   static bool is_daemon(oop java_thread_group);
 431   // vmAllowSuspension
 432   static bool is_vmAllowSuspension(oop java_thread_group);
 433   // Debugging
 434   friend class JavaClasses;
 435 };
 436 
 437 
 438 
 439 // Interface to java.lang.Throwable objects
 440 
 441 class java_lang_Throwable: AllStatic {
 442   friend class BacktraceBuilder;
 443   friend class BacktraceIterator;
 444 
 445  private:
 446   // Offsets
 447   enum {
 448     hc_backtrace_offset     =  0,
 449     hc_detailMessage_offset =  1,
 450     hc_cause_offset         =  2,  // New since 1.4
 451     hc_stackTrace_offset    =  3   // New since 1.4
 452   };
 453   enum {
 454       hc_static_unassigned_stacktrace_offset = 0  // New since 1.7
 455   };
 456   // Trace constants
 457   enum {
 458     trace_methods_offset = 0,
 459     trace_bcis_offset    = 1,
 460     trace_mirrors_offset = 2,
 461     trace_cprefs_offset  = 3,
 462     trace_next_offset    = 4,
 463     trace_size           = 5,
 464     trace_chunk_size     = 32
 465   };
 466 
 467   static int backtrace_offset;
 468   static int detailMessage_offset;

 469   static int stackTrace_offset;
 470   static int depth_offset;
 471   static int static_unassigned_stacktrace_offset;
 472 


 473   // StackTrace (programmatic access, new since 1.4)
 474   static void clear_stacktrace(oop throwable);


 475   // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
 476   static void set_stacktrace(oop throwable, oop st_element_array);
 477   static oop unassigned_stacktrace();
 478 
 479  public:
 480   // Backtrace
 481   static oop backtrace(oop throwable);
 482   static void set_backtrace(oop throwable, oop value);
 483   static void set_depth(oop throwable, int value);
 484   // Needed by JVMTI to filter out this internal field.
 485   static int get_backtrace_offset() { return backtrace_offset;}
 486   static int get_detailMessage_offset() { return detailMessage_offset;}
 487   // Message

 488   static oop message(Handle throwable);
 489   static void set_message(oop throwable, oop value);
 490   static Symbol* detail_message(oop throwable);


 491   static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
 492   static void print_stack_usage(Handle stream);
 493 
 494   static void compute_offsets();
 495 
 496   // Allocate space for backtrace (created but stack trace not filled in)
 497   static void allocate_backtrace(Handle throwable, TRAPS);
 498   // Fill in current stack trace for throwable with preallocated backtrace (no GC)
 499   static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
 500   // Fill in current stack trace, can cause GC
 501   static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
 502   static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
 503   // Programmatic access to stack trace
 504   static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);

 505   // Printing
 506   static void print(Handle throwable, outputStream* st);
 507   static void print_stack_trace(Handle throwable, outputStream* st);
 508   static void java_printStackTrace(Handle throwable, TRAPS);
 509   // Debugging
 510   friend class JavaClasses;
 511 };
 512 
 513 
 514 // Interface to java.lang.reflect.AccessibleObject objects
 515 
 516 class java_lang_reflect_AccessibleObject: AllStatic {
 517  private:
 518   // Note that to reduce dependencies on the JDK we compute these
 519   // offsets at run-time.
 520   static int override_offset;
 521 
 522   static void compute_offsets();
 523 
 524  public:
 525   // Accessors
 526   static jboolean override(oop reflect);
 527   static void set_override(oop reflect, jboolean value);
 528 
 529   // Debugging
 530   friend class JavaClasses;
 531 };
 532 
 533 
 534 // Interface to java.lang.reflect.Method objects
 535 
 536 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
 537  private:
 538   // Note that to reduce dependencies on the JDK we compute these
 539   // offsets at run-time.
 540   static int clazz_offset;
 541   static int name_offset;
 542   static int returnType_offset;
 543   static int parameterTypes_offset;
 544   static int exceptionTypes_offset;
 545   static int slot_offset;
 546   static int modifiers_offset;
 547   static int signature_offset;
 548   static int annotations_offset;
 549   static int parameter_annotations_offset;
 550   static int annotation_default_offset;
 551   static int type_annotations_offset;
 552 
 553   static void compute_offsets();
 554 
 555  public:
 556   // Allocation
 557   static Handle create(TRAPS);
 558 
 559   // Accessors
 560   static oop clazz(oop reflect);
 561   static void set_clazz(oop reflect, oop value);
 562 
 563   static oop name(oop method);
 564   static void set_name(oop method, oop value);
 565 
 566   static oop return_type(oop method);
 567   static void set_return_type(oop method, oop value);
 568 
 569   static oop parameter_types(oop method);
 570   static void set_parameter_types(oop method, oop value);
 571 
 572   static oop exception_types(oop method);
 573   static void set_exception_types(oop method, oop value);
 574 
 575   static int slot(oop reflect);
 576   static void set_slot(oop reflect, int value);
 577 
 578   static int modifiers(oop method);
 579   static void set_modifiers(oop method, int value);
 580 
 581   static bool has_signature_field();
 582   static oop signature(oop method);
 583   static void set_signature(oop method, oop value);
 584 
 585   static bool has_annotations_field();
 586   static oop annotations(oop method);
 587   static void set_annotations(oop method, oop value);
 588 
 589   static bool has_parameter_annotations_field();
 590   static oop parameter_annotations(oop method);
 591   static void set_parameter_annotations(oop method, oop value);
 592 
 593   static bool has_annotation_default_field();
 594   static oop annotation_default(oop method);
 595   static void set_annotation_default(oop method, oop value);
 596 
 597   static bool has_type_annotations_field();
 598   static oop type_annotations(oop method);
 599   static void set_type_annotations(oop method, oop value);
 600 
 601   // Debugging
 602   friend class JavaClasses;
 603 };
 604 
 605 
 606 // Interface to java.lang.reflect.Constructor objects
 607 
 608 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
 609  private:
 610   // Note that to reduce dependencies on the JDK we compute these
 611   // offsets at run-time.
 612   static int clazz_offset;
 613   static int parameterTypes_offset;
 614   static int exceptionTypes_offset;
 615   static int slot_offset;
 616   static int modifiers_offset;
 617   static int signature_offset;
 618   static int annotations_offset;
 619   static int parameter_annotations_offset;
 620   static int type_annotations_offset;
 621 
 622   static void compute_offsets();
 623 
 624  public:
 625   // Allocation
 626   static Handle create(TRAPS);
 627 
 628   // Accessors
 629   static oop clazz(oop reflect);
 630   static void set_clazz(oop reflect, oop value);
 631 
 632   static oop parameter_types(oop constructor);
 633   static void set_parameter_types(oop constructor, oop value);
 634 
 635   static oop exception_types(oop constructor);
 636   static void set_exception_types(oop constructor, oop value);
 637 
 638   static int slot(oop reflect);
 639   static void set_slot(oop reflect, int value);
 640 
 641   static int modifiers(oop constructor);
 642   static void set_modifiers(oop constructor, int value);
 643 
 644   static bool has_signature_field();
 645   static oop signature(oop constructor);
 646   static void set_signature(oop constructor, oop value);
 647 
 648   static bool has_annotations_field();
 649   static oop annotations(oop constructor);
 650   static void set_annotations(oop constructor, oop value);
 651 
 652   static bool has_parameter_annotations_field();
 653   static oop parameter_annotations(oop method);
 654   static void set_parameter_annotations(oop method, oop value);
 655 
 656   static bool has_type_annotations_field();
 657   static oop type_annotations(oop constructor);
 658   static void set_type_annotations(oop constructor, oop value);
 659 
 660   // Debugging
 661   friend class JavaClasses;
 662 };
 663 
 664 
 665 // Interface to java.lang.reflect.Field objects
 666 
 667 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
 668  private:
 669   // Note that to reduce dependencies on the JDK we compute these
 670   // offsets at run-time.
 671   static int clazz_offset;
 672   static int name_offset;
 673   static int type_offset;
 674   static int slot_offset;
 675   static int modifiers_offset;
 676   static int signature_offset;
 677   static int annotations_offset;
 678   static int type_annotations_offset;
 679 
 680   static void compute_offsets();
 681 
 682  public:
 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 name(oop field);
 691   static void set_name(oop field, oop value);
 692 
 693   static oop type(oop field);
 694   static void set_type(oop field, oop value);
 695 
 696   static int slot(oop reflect);
 697   static void set_slot(oop reflect, int value);
 698 
 699   static int modifiers(oop field);
 700   static void set_modifiers(oop field, 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_annotation_default_field();
 715   static oop annotation_default(oop method);
 716   static void set_annotation_default(oop method, oop value);
 717 
 718   static bool has_type_annotations_field();
 719   static oop type_annotations(oop field);
 720   static void set_type_annotations(oop field, oop value);
 721 
 722   // Debugging
 723   friend class JavaClasses;
 724 };
 725 
 726 class java_lang_reflect_Parameter {
 727  private:
 728   // Note that to reduce dependencies on the JDK we compute these
 729   // offsets at run-time.
 730   static int name_offset;
 731   static int modifiers_offset;
 732   static int index_offset;
 733   static int executable_offset;
 734 
 735   static void compute_offsets();
 736 
 737  public:
 738   // Allocation
 739   static Handle create(TRAPS);
 740 
 741   // Accessors
 742   static oop name(oop field);
 743   static void set_name(oop field, oop value);
 744 
 745   static int index(oop reflect);
 746   static void set_index(oop reflect, int value);
 747 
 748   static int modifiers(oop reflect);
 749   static void set_modifiers(oop reflect, int value);
 750 
 751   static oop executable(oop constructor);
 752   static void set_executable(oop constructor, oop value);
 753 
 754   friend class JavaClasses;
 755 };
 756 
 757 // Interface to sun.reflect.ConstantPool objects
 758 class sun_reflect_ConstantPool {
 759  private:
 760   // Note that to reduce dependencies on the JDK we compute these
 761   // offsets at run-time.
 762   static int _oop_offset;
 763 
 764   static void compute_offsets();
 765 
 766  public:
 767   // Allocation
 768   static Handle create(TRAPS);
 769 
 770   // Accessors
 771   static void set_cp(oop reflect, ConstantPool* value);
 772   static int oop_offset() {
 773     return _oop_offset;
 774   }
 775 
 776   static ConstantPool* get_cp(oop reflect);
 777 
 778   // Debugging
 779   friend class JavaClasses;
 780 };
 781 
 782 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects
 783 class sun_reflect_UnsafeStaticFieldAccessorImpl {
 784  private:
 785   static int _base_offset;
 786   static void compute_offsets();
 787 
 788  public:
 789   static int base_offset() {
 790     return _base_offset;
 791   }
 792 
 793   // Debugging
 794   friend class JavaClasses;
 795 };
 796 
 797 // Interface to java.lang primitive type boxing objects:
 798 //  - java.lang.Boolean
 799 //  - java.lang.Character
 800 //  - java.lang.Float
 801 //  - java.lang.Double
 802 //  - java.lang.Byte
 803 //  - java.lang.Short
 804 //  - java.lang.Integer
 805 //  - java.lang.Long
 806 
 807 // This could be separated out into 8 individual classes.
 808 
 809 class java_lang_boxing_object: AllStatic {
 810  private:
 811   enum {
 812    hc_value_offset = 0
 813   };
 814   static int value_offset;
 815   static int long_value_offset;
 816 
 817   static oop initialize_and_allocate(BasicType type, TRAPS);
 818  public:
 819   // Allocation. Returns a boxed value, or NULL for invalid type.
 820   static oop create(BasicType type, jvalue* value, TRAPS);
 821   // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
 822   static BasicType get_value(oop box, jvalue* value);
 823   static BasicType set_value(oop box, jvalue* value);
 824   static BasicType basic_type(oop box);
 825   static bool is_instance(oop box)                 { return basic_type(box) != T_ILLEGAL; }
 826   static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
 827   static void print(oop box, outputStream* st)     { jvalue value;  print(get_value(box, &value), &value, st); }
 828   static void print(BasicType type, jvalue* value, outputStream* st);
 829 
 830   static int value_offset_in_bytes(BasicType type) {
 831     return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
 832                                                     value_offset;
 833   }
 834 
 835   // Debugging
 836   friend class JavaClasses;
 837 };
 838 
 839 
 840 
 841 // Interface to java.lang.ref.Reference objects
 842 
 843 class java_lang_ref_Reference: AllStatic {
 844  public:
 845   enum {
 846    hc_referent_offset   = 0,
 847    hc_queue_offset      = 1,
 848    hc_next_offset       = 2,
 849    hc_discovered_offset = 3  // Is not last, see SoftRefs.
 850   };
 851   enum {
 852    hc_static_lock_offset    = 0,
 853    hc_static_pending_offset = 1
 854   };
 855 
 856   static int referent_offset;
 857   static int queue_offset;
 858   static int next_offset;
 859   static int discovered_offset;
 860   static int static_lock_offset;
 861   static int static_pending_offset;
 862   static int number_of_fake_oop_fields;
 863 
 864   // Accessors
 865   static inline oop referent(oop ref);
 866   static inline void set_referent(oop ref, oop value);
 867   static inline void set_referent_raw(oop ref, oop value);
 868   static inline HeapWord* referent_addr(oop ref);
 869   static inline oop next(oop ref);
 870   static inline void set_next(oop ref, oop value);
 871   static inline void set_next_raw(oop ref, oop value);
 872   static inline HeapWord* next_addr(oop ref);
 873   static inline oop discovered(oop ref);
 874   static inline void set_discovered(oop ref, oop value);
 875   static inline void set_discovered_raw(oop ref, oop value);
 876   static inline HeapWord* discovered_addr(oop ref);
 877 
 878   // Accessors for statics
 879   static oop  pending_list_lock();
 880   static oop  pending_list();
 881 
 882   static HeapWord*  pending_list_lock_addr();
 883   static HeapWord*  pending_list_addr();
 884 };
 885 
 886 
 887 // Interface to java.lang.ref.SoftReference objects
 888 
 889 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
 890  public:
 891   enum {
 892    // The timestamp is a long field and may need to be adjusted for alignment.
 893    hc_timestamp_offset  = hc_discovered_offset + 1
 894   };
 895   enum {
 896    hc_static_clock_offset = 0
 897   };
 898 
 899   static int timestamp_offset;
 900   static int static_clock_offset;
 901 
 902   // Accessors
 903   static jlong timestamp(oop ref);
 904 
 905   // Accessors for statics
 906   static jlong clock();
 907   static void set_clock(jlong value);
 908 };
 909 
 910 // Interface to java.lang.invoke.MethodHandle objects
 911 
 912 class MethodHandleEntry;
 913 
 914 class java_lang_invoke_MethodHandle: AllStatic {
 915   friend class JavaClasses;
 916 
 917  private:
 918   static int _type_offset;               // the MethodType of this MH
 919   static int _form_offset;               // the LambdaForm of this MH
 920 
 921   static void compute_offsets();
 922 
 923  public:
 924   // Accessors
 925   static oop            type(oop mh);
 926   static void       set_type(oop mh, oop mtype);
 927 
 928   static oop            form(oop mh);
 929   static void       set_form(oop mh, oop lform);
 930 
 931   // Testers
 932   static bool is_subclass(Klass* klass) {
 933     return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
 934   }
 935   static bool is_instance(oop obj);
 936 
 937   // Accessors for code generation:
 938   static int type_offset_in_bytes()             { return _type_offset; }
 939   static int form_offset_in_bytes()             { return _form_offset; }
 940 };
 941 
 942 // Interface to java.lang.invoke.DirectMethodHandle objects
 943 
 944 class java_lang_invoke_DirectMethodHandle: AllStatic {
 945   friend class JavaClasses;
 946 
 947  private:
 948   static int _member_offset;               // the MemberName of this DMH
 949 
 950   static void compute_offsets();
 951 
 952  public:
 953   // Accessors
 954   static oop  member(oop mh);
 955 
 956   // Testers
 957   static bool is_subclass(Klass* klass) {
 958     return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
 959   }
 960   static bool is_instance(oop obj);
 961 
 962   // Accessors for code generation:
 963   static int member_offset_in_bytes()           { return _member_offset; }
 964 };
 965 
 966 // Interface to java.lang.invoke.LambdaForm objects
 967 // (These are a private interface for managing adapter code generation.)
 968 
 969 class java_lang_invoke_LambdaForm: AllStatic {
 970   friend class JavaClasses;
 971 
 972  private:
 973   static int _vmentry_offset;  // type is MemberName
 974 
 975   static void compute_offsets();
 976 
 977  public:
 978   // Accessors
 979   static oop            vmentry(oop lform);
 980   static void       set_vmentry(oop lform, oop invoker);
 981 
 982   // Testers
 983   static bool is_subclass(Klass* klass) {
 984     return SystemDictionary::LambdaForm_klass() != NULL &&
 985       klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
 986   }
 987   static bool is_instance(oop obj);
 988 
 989   // Accessors for code generation:
 990   static int vmentry_offset_in_bytes()          { return _vmentry_offset; }
 991 };
 992 
 993 
 994 // Interface to java.lang.invoke.MemberName objects
 995 // (These are a private interface for Java code to query the class hierarchy.)
 996 
 997 #define MEMBERNAME_INJECTED_FIELDS(macro)                               \
 998   macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \
 999   macro(java_lang_invoke_MemberName, vmindex,  intptr_signature, false) \
1000   macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false)
1001 
1002 class java_lang_invoke_MemberName: AllStatic {
1003   friend class JavaClasses;
1004 
1005  private:
1006   // From java.lang.invoke.MemberName:
1007   //    private Class<?>   clazz;       // class in which the method is defined
1008   //    private String     name;        // may be null if not yet materialized
1009   //    private Object     type;        // may be null if not yet materialized
1010   //    private int        flags;       // modifier bits; see reflect.Modifier
1011   //    private intptr     vmtarget;    // VM-specific target value
1012   //    private intptr_t   vmindex;     // member index within class or interface
1013   static int _clazz_offset;
1014   static int _name_offset;
1015   static int _type_offset;
1016   static int _flags_offset;
1017   static int _vmtarget_offset;
1018   static int _vmloader_offset;
1019   static int _vmindex_offset;
1020 
1021   static void compute_offsets();
1022 
1023  public:
1024   // Accessors
1025   static oop            clazz(oop mname);
1026   static void       set_clazz(oop mname, oop clazz);
1027 
1028   static oop            type(oop mname);
1029   static void       set_type(oop mname, oop type);
1030 
1031   static oop            name(oop mname);
1032   static void       set_name(oop mname, oop name);
1033 
1034   static int            flags(oop mname);
1035   static void       set_flags(oop mname, int flags);
1036 
1037   static Metadata*      vmtarget(oop mname);
1038   static void       set_vmtarget(oop mname, Metadata* target);
1039 
1040   static intptr_t       vmindex(oop mname);
1041   static void       set_vmindex(oop mname, intptr_t index);
1042 
1043   // Testers
1044   static bool is_subclass(Klass* klass) {
1045     return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1046   }
1047   static bool is_instance(oop obj);
1048 
1049   static bool is_method(oop obj);
1050 
1051   // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1052   enum {
1053     MN_IS_METHOD            = 0x00010000, // method (not constructor)
1054     MN_IS_CONSTRUCTOR       = 0x00020000, // constructor
1055     MN_IS_FIELD             = 0x00040000, // field
1056     MN_IS_TYPE              = 0x00080000, // nested type
1057     MN_CALLER_SENSITIVE     = 0x00100000, // @CallerSensitive annotation detected
1058     MN_REFERENCE_KIND_SHIFT = 24, // refKind
1059     MN_REFERENCE_KIND_MASK  = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1060     // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1061     MN_SEARCH_SUPERCLASSES  = 0x00100000, // walk super classes
1062     MN_SEARCH_INTERFACES    = 0x00200000  // walk implemented interfaces
1063   };
1064 
1065   // Accessors for code generation:
1066   static int clazz_offset_in_bytes()            { return _clazz_offset; }
1067   static int type_offset_in_bytes()             { return _type_offset; }
1068   static int name_offset_in_bytes()             { return _name_offset; }
1069   static int flags_offset_in_bytes()            { return _flags_offset; }
1070   static int vmtarget_offset_in_bytes()         { return _vmtarget_offset; }
1071   static int vmindex_offset_in_bytes()          { return _vmindex_offset; }
1072 };
1073 
1074 
1075 // Interface to java.lang.invoke.MethodType objects
1076 
1077 class java_lang_invoke_MethodType: AllStatic {
1078   friend class JavaClasses;
1079 
1080  private:
1081   static int _rtype_offset;
1082   static int _ptypes_offset;
1083 
1084   static void compute_offsets();
1085 
1086  public:
1087   // Accessors
1088   static oop            rtype(oop mt);
1089   static objArrayOop    ptypes(oop mt);
1090 
1091   static oop            ptype(oop mt, int index);
1092   static int            ptype_count(oop mt);
1093 
1094   static int            ptype_slot_count(oop mt);  // extra counts for long/double
1095   static int            rtype_slot_count(oop mt);  // extra counts for long/double
1096 
1097   static Symbol*        as_signature(oop mt, bool intern_if_not_found, TRAPS);
1098   static void           print_signature(oop mt, outputStream* st);
1099 
1100   static bool is_instance(oop obj);
1101 
1102   static bool equals(oop mt1, oop mt2);
1103 
1104   // Accessors for code generation:
1105   static int rtype_offset_in_bytes()            { return _rtype_offset; }
1106   static int ptypes_offset_in_bytes()           { return _ptypes_offset; }
1107 };
1108 
1109 
1110 // Interface to java.lang.invoke.CallSite objects
1111 
1112 class java_lang_invoke_CallSite: AllStatic {
1113   friend class JavaClasses;
1114 
1115 private:
1116   static int _target_offset;
1117   static int _context_offset;
1118 
1119   static void compute_offsets();
1120 
1121 public:
1122   // Accessors
1123   static oop              target(          oop site);
1124   static void         set_target(          oop site, oop target);
1125   static void         set_target_volatile( oop site, oop target);
1126 
1127   static oop              context(oop site);
1128 
1129   // Testers
1130   static bool is_subclass(Klass* klass) {
1131     return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1132   }
1133   static bool is_instance(oop obj);
1134 
1135   // Accessors for code generation:
1136   static int target_offset_in_bytes()           { return _target_offset; }
1137 };
1138 
1139 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1140 
1141 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1142   macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false)
1143 
1144 class DependencyContext;
1145 
1146 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1147   friend class JavaClasses;
1148 
1149 private:
1150   static int _vmdependencies_offset;
1151 
1152   static void compute_offsets();
1153 
1154 public:
1155   // Accessors
1156   static DependencyContext vmdependencies(oop context);
1157 
1158   // Testers
1159   static bool is_subclass(Klass* klass) {
1160     return klass->is_subclass_of(SystemDictionary::Context_klass());
1161   }
1162   static bool is_instance(oop obj);
1163 };
1164 
1165 // Interface to java.security.AccessControlContext objects
1166 
1167 class java_security_AccessControlContext: AllStatic {
1168  private:
1169   // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1170   // so we compute the offsets at startup rather than hard-wiring them.
1171   static int _context_offset;
1172   static int _privilegedContext_offset;
1173   static int _isPrivileged_offset;
1174   static int _isAuthorized_offset;
1175 
1176   static void compute_offsets();
1177  public:
1178   static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1179 
1180   static bool is_authorized(Handle context);
1181 
1182   // Debugging/initialization
1183   friend class JavaClasses;
1184 };
1185 
1186 
1187 // Interface to java.lang.ClassLoader objects
1188 
1189 #define CLASSLOADER_INJECTED_FIELDS(macro)                            \
1190   macro(java_lang_ClassLoader, loader_data,  intptr_signature, false)
1191 
1192 class java_lang_ClassLoader : AllStatic {
1193  private:
1194   // The fake offsets are added by the class loader when java.lang.Class is loaded
1195   enum {
1196    hc_parent_offset = 0
1197   };
1198   static int _loader_data_offset;
1199   static bool offsets_computed;
1200   static int parent_offset;
1201   static int parallelCapable_offset;
1202 
1203  public:
1204   static void compute_offsets();
1205 
1206   static ClassLoaderData** loader_data_addr(oop loader);
1207   static ClassLoaderData* loader_data(oop loader);
1208 
1209   static oop parent(oop loader);
1210   static bool isAncestor(oop loader, oop cl);
1211 
1212   // Support for parallelCapable field
1213   static bool parallelCapable(oop the_class_mirror);
1214 
1215   static bool is_trusted_loader(oop loader);
1216 
1217   // Fix for 4474172
1218   static oop  non_reflection_class_loader(oop loader);
1219 
1220   // Testers
1221   static bool is_subclass(Klass* klass) {
1222     return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1223   }
1224   static bool is_instance(oop obj);
1225 
1226   // Debugging
1227   friend class JavaClasses;
1228   friend class ClassFileParser; // access to number_of_fake_fields
1229 };
1230 
1231 
1232 // Interface to java.lang.System objects
1233 
1234 class java_lang_System : AllStatic {
1235  private:
1236   enum {
1237    hc_static_in_offset  = 0,
1238    hc_static_out_offset = 1,
1239    hc_static_err_offset = 2,
1240    hc_static_security_offset = 3
1241   };
1242 
1243   static int  static_in_offset;
1244   static int static_out_offset;
1245   static int static_err_offset;
1246   static int static_security_offset;
1247 
1248  public:
1249   static int  in_offset_in_bytes();
1250   static int out_offset_in_bytes();
1251   static int err_offset_in_bytes();
1252 
1253   static bool has_security_manager();
1254 
1255   // Debugging
1256   friend class JavaClasses;
1257 };
1258 
1259 
1260 // Interface to java.lang.StackTraceElement objects
1261 
1262 class java_lang_StackTraceElement: AllStatic {
1263  private:
1264   enum {
1265     hc_declaringClass_offset  = 0,
1266     hc_methodName_offset = 1,
1267     hc_fileName_offset   = 2,
1268     hc_lineNumber_offset = 3
1269   };
1270 
1271   static int declaringClass_offset;
1272   static int methodName_offset;
1273   static int fileName_offset;
1274   static int lineNumber_offset;
1275 

1276   // Setters
1277   static void set_declaringClass(oop element, oop value);
1278   static void set_methodName(oop element, oop value);
1279   static void set_fileName(oop element, oop value);
1280   static void set_lineNumber(oop element, int value);
1281 
1282  public:
1283   // Create an instance of StackTraceElement

1284   static oop create(const methodHandle& method, int bci, TRAPS);
1285 
1286   static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1287                       int version, int bci, int cpref, TRAPS);
1288 
1289   // Debugging
1290   friend class JavaClasses;
1291 };
1292 
1293 
1294 class Backtrace: AllStatic {
1295  public:
1296   // Helper backtrace functions to store bci|version together.
1297   static int merge_bci_and_version(int bci, int version);
1298   static int merge_mid_and_cpref(int mid, int cpref);
1299   static int bci_at(unsigned int merged);
1300   static int version_at(unsigned int merged);
1301   static int mid_at(unsigned int merged);
1302   static int cpref_at(unsigned int merged);
1303   static int get_line_number(const methodHandle& method, int bci);
1304   static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1305 
1306   // Debugging
1307   friend class JavaClasses;
1308 };
1309 
1310 // Interface to java.lang.StackFrameInfo objects
1311 
1312 #define STACKFRAMEINFO_INJECTED_FIELDS(macro)                      \
1313   macro(java_lang_StackFrameInfo, mid,     short_signature, false) \
1314   macro(java_lang_StackFrameInfo, version, short_signature, false) \
1315   macro(java_lang_StackFrameInfo, cpref,   short_signature, false)
1316 
1317 class java_lang_StackFrameInfo: AllStatic {
1318 private:
1319   static int _declaringClass_offset;
1320   static int _memberName_offset;
1321   static int _bci_offset;
1322   static int _methodName_offset;
1323   static int _fileName_offset;
1324   static int _lineNumber_offset;
1325 
1326   static int _mid_offset;
1327   static int _version_offset;
1328   static int _cpref_offset;
1329 
1330   static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1331   static Symbol* get_file_name(Handle stackFrame, InstanceKlass* holder);
1332 
1333 public:
1334   // Setters
1335   static void set_declaringClass(oop info, oop value);
1336   static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci);
1337   static void set_bci(oop info, int value);
1338 
1339   // set method info in an instance of StackFrameInfo
1340   static void fill_methodInfo(Handle info, TRAPS);
1341   static void set_methodName(oop info, oop value);
1342   static void set_fileName(oop info, oop value);
1343   static void set_lineNumber(oop info, int value);
1344 
1345   // these injected fields are only used if -XX:-MemberNameInStackFrame set
1346   static void set_mid(oop info, short value);
1347   static void set_version(oop info, short value);
1348   static void set_cpref(oop info, short value);
1349 
1350   static void compute_offsets();
1351 
1352   // Debugging
1353   friend class JavaClasses;
1354 };
1355 
1356 class java_lang_LiveStackFrameInfo: AllStatic {
1357  private:
1358   static int _monitors_offset;
1359   static int _locals_offset;
1360   static int _operands_offset;
1361 
1362  public:
1363   static void set_monitors(oop info, oop value);
1364   static void set_locals(oop info, oop value);
1365   static void set_operands(oop info, oop value);
1366 
1367   static void compute_offsets();
1368 
1369   // Debugging
1370   friend class JavaClasses;
1371 };
1372 
1373 // Interface to java.lang.AssertionStatusDirectives objects
1374 
1375 class java_lang_AssertionStatusDirectives: AllStatic {
1376  private:
1377   enum {
1378     hc_classes_offset,
1379     hc_classEnabled_offset,
1380     hc_packages_offset,
1381     hc_packageEnabled_offset,
1382     hc_deflt_offset
1383   };
1384 
1385   static int classes_offset;
1386   static int classEnabled_offset;
1387   static int packages_offset;
1388   static int packageEnabled_offset;
1389   static int deflt_offset;
1390 
1391  public:
1392   // Setters
1393   static void set_classes(oop obj, oop val);
1394   static void set_classEnabled(oop obj, oop val);
1395   static void set_packages(oop obj, oop val);
1396   static void set_packageEnabled(oop obj, oop val);
1397   static void set_deflt(oop obj, bool val);
1398   // Debugging
1399   friend class JavaClasses;
1400 };
1401 
1402 
1403 class java_nio_Buffer: AllStatic {
1404  private:
1405   static int _limit_offset;
1406 
1407  public:
1408   static int  limit_offset();
1409   static void compute_offsets();
1410 };
1411 
1412 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1413  private:
1414   static int  _owner_offset;
1415  public:
1416   static void initialize(TRAPS);
1417   static oop  get_owner_threadObj(oop obj);
1418 };
1419 
1420 // Use to declare fields that need to be injected into Java classes
1421 // for the JVM to use.  The name_index and signature_index are
1422 // declared in vmSymbols.  The may_be_java flag is used to declare
1423 // fields that might already exist in Java but should be injected if
1424 // they don't.  Otherwise the field is unconditionally injected and
1425 // the JVM uses the injected one.  This is to ensure that name
1426 // collisions don't occur.  In general may_be_java should be false
1427 // unless there's a good reason.
1428 
1429 class InjectedField {
1430  public:
1431   const SystemDictionary::WKID klass_id;
1432   const vmSymbols::SID name_index;
1433   const vmSymbols::SID signature_index;
1434   const bool           may_be_java;
1435 
1436 
1437   Klass* klass() const    { return SystemDictionary::well_known_klass(klass_id); }
1438   Symbol* name() const      { return lookup_symbol(name_index); }
1439   Symbol* signature() const { return lookup_symbol(signature_index); }
1440 
1441   int compute_offset();
1442 
1443   // Find the Symbol for this index
1444   static Symbol* lookup_symbol(int symbol_index) {
1445     return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1446   }
1447 };
1448 
1449 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1450   klass##_##name##_enum,
1451 
1452 #define ALL_INJECTED_FIELDS(macro)          \
1453   CLASS_INJECTED_FIELDS(macro)              \
1454   CLASSLOADER_INJECTED_FIELDS(macro)        \
1455   MEMBERNAME_INJECTED_FIELDS(macro)         \
1456   CALLSITECONTEXT_INJECTED_FIELDS(macro)    \
1457   STACKFRAMEINFO_INJECTED_FIELDS(macro)
1458 
1459 
1460 // Interface to hard-coded offset checking
1461 
1462 class JavaClasses : AllStatic {
1463  private:
1464 
1465   static InjectedField _injected_fields[];
1466 
1467   static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1468   static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1469   static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1470 
1471  public:
1472   enum InjectedFieldID {
1473     ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1474     MAX_enum
1475   };
1476 
1477   static int compute_injected_offset(InjectedFieldID id);
1478 
1479   static void compute_hard_coded_offsets();
1480   static void compute_offsets();
1481   static void check_offsets() PRODUCT_RETURN;
1482 
1483   static InjectedField* get_injected(Symbol* class_name, int* field_count);
1484 };
1485 
1486 #undef DECLARE_INJECTED_FIELD_ENUM
1487 
1488 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP
--- EOF ---