rev 11484 : [mq]: webrev.02

   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 
 159   static bool equals(oop java_string, jchar* chars, int len);
 160   static bool equals(oop str1, oop str2);
 161 
 162   // Conversion between '.' and '/' formats
 163   static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
 164   static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
 165 
 166   // Conversion
 167   static Symbol* as_symbol(Handle java_string, TRAPS);
 168   static Symbol* as_symbol_or_null(oop java_string);
 169 
 170   // Testers
 171   static bool is_instance(oop obj);
 172   static inline bool is_instance_inlined(oop obj);
 173 
 174   // Debugging
 175   static void print(oop java_string, outputStream* st);
 176   friend class JavaClasses;
 177   friend class StringTable;
 178 };
 179 
 180 
 181 // Interface to java.lang.Class objects
 182 
 183 #define CLASS_INJECTED_FIELDS(macro)                                       \
 184   macro(java_lang_Class, klass,                  intptr_signature,  false) \
 185   macro(java_lang_Class, array_klass,            intptr_signature,  false) \
 186   macro(java_lang_Class, oop_size,               int_signature,     false) \
 187   macro(java_lang_Class, static_oop_field_count, int_signature,     false) \
 188   macro(java_lang_Class, protection_domain,      object_signature,  false) \
 189   macro(java_lang_Class, signers,                object_signature,  false)
 190 
 191 class java_lang_Class : AllStatic {
 192   friend class VMStructs;
 193   friend class JVMCIVMStructs;
 194 
 195  private:
 196   // The fake offsets are added by the class loader when java.lang.Class is loaded
 197 
 198   static int _klass_offset;
 199   static int _array_klass_offset;
 200 
 201   static int _oop_size_offset;
 202   static int _static_oop_field_count_offset;
 203 
 204   static int _protection_domain_offset;
 205   static int _init_lock_offset;
 206   static int _signers_offset;
 207   static int _class_loader_offset;
 208   static int _module_offset;
 209   static int _component_mirror_offset;
 210 
 211   static bool offsets_computed;
 212   static int classRedefinedCount_offset;
 213 
 214   static GrowableArray<Klass*>* _fixup_mirror_list;
 215   static GrowableArray<Klass*>* _fixup_module_field_list;
 216 
 217   static void set_init_lock(oop java_class, oop init_lock);
 218   static void set_protection_domain(oop java_class, oop protection_domain);
 219   static void set_class_loader(oop java_class, oop class_loader);
 220   static void set_component_mirror(oop java_class, oop comp_mirror);
 221   static void initialize_mirror_fields(KlassHandle k, Handle mirror, Handle protection_domain, TRAPS);
 222  public:
 223   static void compute_offsets();
 224 
 225   // Instance creation
 226   static void create_mirror(KlassHandle k, Handle class_loader, Handle module,
 227                             Handle protection_domain, TRAPS);
 228   static void fixup_mirror(KlassHandle k, TRAPS);
 229   static oop  create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
 230 
 231   static void fixup_module_field(KlassHandle k, Handle module);
 232 
 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   static void set_module(oop java_class, oop module);
 271   static oop module(oop java_class);
 272 
 273   static int oop_size(oop java_class);
 274   static int oop_size_offset()                      { return _oop_size_offset; } 
 275   static int static_oop_field_count(oop java_class);
 276   static void set_static_oop_field_count(oop java_class, int size);

 277 
 278   static GrowableArray<Klass*>* fixup_mirror_list() {
 279     return _fixup_mirror_list;
 280   }
 281   static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
 282     _fixup_mirror_list = v;
 283   }
 284 
 285   static GrowableArray<Klass*>* fixup_module_field_list() {
 286     return _fixup_module_field_list;
 287   }
 288   static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
 289     _fixup_module_field_list = v;
 290   }
 291 
 292   // Debugging
 293   friend class JavaClasses;
 294   friend class InstanceKlass;   // verification code accesses offsets
 295   friend class ClassFileParser; // access to number_of_fake_fields
 296 };
 297 
 298 // Interface to java.lang.Thread objects
 299 
 300 class java_lang_Thread : AllStatic {
 301  private:
 302   // Note that for this class the layout changed between JDK1.2 and JDK1.3,
 303   // so we compute the offsets at startup rather than hard-wiring them.
 304   static int _name_offset;
 305   static int _group_offset;
 306   static int _contextClassLoader_offset;
 307   static int _inheritedAccessControlContext_offset;
 308   static int _priority_offset;
 309   static int _eetop_offset;
 310   static int _daemon_offset;
 311   static int _stillborn_offset;
 312   static int _stackSize_offset;
 313   static int _tid_offset;
 314   static int _thread_status_offset;
 315   static int _park_blocker_offset;
 316   static int _park_event_offset ;
 317 
 318   static void compute_offsets();
 319 
 320  public:
 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 _vmAllowSuspension_offset;
 416   static int _nthreads_offset;
 417   static int _ngroups_offset;
 418 
 419   static void compute_offsets();
 420 
 421  public:
 422   // parent ThreadGroup
 423   static oop  parent(oop java_thread_group);
 424   // name
 425   static const char* name(oop java_thread_group);
 426   // ("name as oop" accessor is not necessary)
 427   // Number of threads in group
 428   static int nthreads(oop java_thread_group);
 429   // threads
 430   static objArrayOop threads(oop java_thread_group);
 431   // Number of threads in group
 432   static int ngroups(oop java_thread_group);
 433   // groups
 434   static objArrayOop groups(oop java_thread_group);
 435   // maxPriority in group
 436   static ThreadPriority maxPriority(oop java_thread_group);
 437   // Destroyed
 438   static bool is_destroyed(oop java_thread_group);
 439   // Daemon
 440   static bool is_daemon(oop java_thread_group);
 441   // vmAllowSuspension
 442   static bool is_vmAllowSuspension(oop java_thread_group);
 443   // Debugging
 444   friend class JavaClasses;
 445 };
 446 
 447 
 448 
 449 // Interface to java.lang.Throwable objects
 450 
 451 class java_lang_Throwable: AllStatic {
 452   friend class BacktraceBuilder;
 453   friend class BacktraceIterator;
 454 
 455  private:
 456   // Offsets
 457   enum {
 458     hc_backtrace_offset     =  0,
 459     hc_detailMessage_offset =  1,
 460     hc_cause_offset         =  2,  // New since 1.4
 461     hc_stackTrace_offset    =  3   // New since 1.4
 462   };
 463   enum {
 464       hc_static_unassigned_stacktrace_offset = 0  // New since 1.7
 465   };
 466   // Trace constants
 467   enum {
 468     trace_methods_offset = 0,
 469     trace_bcis_offset    = 1,
 470     trace_mirrors_offset = 2,
 471     trace_cprefs_offset  = 3,
 472     trace_next_offset    = 4,
 473     trace_size           = 5,
 474     trace_chunk_size     = 32
 475   };
 476 
 477   static int backtrace_offset;
 478   static int detailMessage_offset;
 479   static int stackTrace_offset;
 480   static int depth_offset;
 481   static int static_unassigned_stacktrace_offset;
 482 
 483   // StackTrace (programmatic access, new since 1.4)
 484   static void clear_stacktrace(oop throwable);
 485   // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
 486   static void set_stacktrace(oop throwable, oop st_element_array);
 487   static oop unassigned_stacktrace();
 488 
 489  public:
 490   // Backtrace
 491   static oop backtrace(oop throwable);
 492   static void set_backtrace(oop throwable, oop value);
 493   static int depth(oop throwable);
 494   static void set_depth(oop throwable, int value);
 495   // Needed by JVMTI to filter out this internal field.
 496   static int get_backtrace_offset() { return backtrace_offset;}
 497   static int get_detailMessage_offset() { return detailMessage_offset;}
 498   // Message
 499   static oop message(Handle throwable);
 500   static void set_message(oop throwable, oop value);
 501   static Symbol* detail_message(oop throwable);
 502   static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
 503   static void print_stack_usage(Handle stream);
 504 
 505   static void compute_offsets();
 506 
 507   // Allocate space for backtrace (created but stack trace not filled in)
 508   static void allocate_backtrace(Handle throwable, TRAPS);
 509   // Fill in current stack trace for throwable with preallocated backtrace (no GC)
 510   static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
 511   // Fill in current stack trace, can cause GC
 512   static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
 513   static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
 514   // Programmatic access to stack trace
 515   static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
 516   // Printing
 517   static void print(Handle throwable, outputStream* st);
 518   static void print_stack_trace(Handle throwable, outputStream* st);
 519   static void java_printStackTrace(Handle throwable, TRAPS);
 520   // Debugging
 521   friend class JavaClasses;
 522 };
 523 
 524 
 525 // Interface to java.lang.reflect.AccessibleObject objects
 526 
 527 class java_lang_reflect_AccessibleObject: AllStatic {
 528  private:
 529   // Note that to reduce dependencies on the JDK we compute these
 530   // offsets at run-time.
 531   static int override_offset;
 532 
 533   static void compute_offsets();
 534 
 535  public:
 536   // Accessors
 537   static jboolean override(oop reflect);
 538   static void set_override(oop reflect, jboolean value);
 539 
 540   // Debugging
 541   friend class JavaClasses;
 542 };
 543 
 544 
 545 // Interface to java.lang.reflect.Method objects
 546 
 547 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
 548  private:
 549   // Note that to reduce dependencies on the JDK we compute these
 550   // offsets at run-time.
 551   static int clazz_offset;
 552   static int name_offset;
 553   static int returnType_offset;
 554   static int parameterTypes_offset;
 555   static int exceptionTypes_offset;
 556   static int slot_offset;
 557   static int modifiers_offset;
 558   static int signature_offset;
 559   static int annotations_offset;
 560   static int parameter_annotations_offset;
 561   static int annotation_default_offset;
 562   static int type_annotations_offset;
 563 
 564   static void compute_offsets();
 565 
 566  public:
 567   // Allocation
 568   static Handle create(TRAPS);
 569 
 570   // Accessors
 571   static oop clazz(oop reflect);
 572   static void set_clazz(oop reflect, oop value);
 573 
 574   static oop name(oop method);
 575   static void set_name(oop method, oop value);
 576 
 577   static oop return_type(oop method);
 578   static void set_return_type(oop method, oop value);
 579 
 580   static oop parameter_types(oop method);
 581   static void set_parameter_types(oop method, oop value);
 582 
 583   static oop exception_types(oop method);
 584   static void set_exception_types(oop method, oop value);
 585 
 586   static int slot(oop reflect);
 587   static void set_slot(oop reflect, int value);
 588 
 589   static int modifiers(oop method);
 590   static void set_modifiers(oop method, int value);
 591 
 592   static bool has_signature_field();
 593   static oop signature(oop method);
 594   static void set_signature(oop method, oop value);
 595 
 596   static bool has_annotations_field();
 597   static oop annotations(oop method);
 598   static void set_annotations(oop method, oop value);
 599 
 600   static bool has_parameter_annotations_field();
 601   static oop parameter_annotations(oop method);
 602   static void set_parameter_annotations(oop method, oop value);
 603 
 604   static bool has_annotation_default_field();
 605   static oop annotation_default(oop method);
 606   static void set_annotation_default(oop method, oop value);
 607 
 608   static bool has_type_annotations_field();
 609   static oop type_annotations(oop method);
 610   static void set_type_annotations(oop method, oop value);
 611 
 612   // Debugging
 613   friend class JavaClasses;
 614 };
 615 
 616 
 617 // Interface to java.lang.reflect.Constructor objects
 618 
 619 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
 620  private:
 621   // Note that to reduce dependencies on the JDK we compute these
 622   // offsets at run-time.
 623   static int clazz_offset;
 624   static int parameterTypes_offset;
 625   static int exceptionTypes_offset;
 626   static int slot_offset;
 627   static int modifiers_offset;
 628   static int signature_offset;
 629   static int annotations_offset;
 630   static int parameter_annotations_offset;
 631   static int type_annotations_offset;
 632 
 633   static void compute_offsets();
 634 
 635  public:
 636   // Allocation
 637   static Handle create(TRAPS);
 638 
 639   // Accessors
 640   static oop clazz(oop reflect);
 641   static void set_clazz(oop reflect, oop value);
 642 
 643   static oop parameter_types(oop constructor);
 644   static void set_parameter_types(oop constructor, oop value);
 645 
 646   static oop exception_types(oop constructor);
 647   static void set_exception_types(oop constructor, oop value);
 648 
 649   static int slot(oop reflect);
 650   static void set_slot(oop reflect, int value);
 651 
 652   static int modifiers(oop constructor);
 653   static void set_modifiers(oop constructor, int value);
 654 
 655   static bool has_signature_field();
 656   static oop signature(oop constructor);
 657   static void set_signature(oop constructor, oop value);
 658 
 659   static bool has_annotations_field();
 660   static oop annotations(oop constructor);
 661   static void set_annotations(oop constructor, oop value);
 662 
 663   static bool has_parameter_annotations_field();
 664   static oop parameter_annotations(oop method);
 665   static void set_parameter_annotations(oop method, oop value);
 666 
 667   static bool has_type_annotations_field();
 668   static oop type_annotations(oop constructor);
 669   static void set_type_annotations(oop constructor, oop value);
 670 
 671   // Debugging
 672   friend class JavaClasses;
 673 };
 674 
 675 
 676 // Interface to java.lang.reflect.Field objects
 677 
 678 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
 679  private:
 680   // Note that to reduce dependencies on the JDK we compute these
 681   // offsets at run-time.
 682   static int clazz_offset;
 683   static int name_offset;
 684   static int type_offset;
 685   static int slot_offset;
 686   static int modifiers_offset;
 687   static int signature_offset;
 688   static int annotations_offset;
 689   static int type_annotations_offset;
 690 
 691   static void compute_offsets();
 692 
 693  public:
 694   // Allocation
 695   static Handle create(TRAPS);
 696 
 697   // Accessors
 698   static oop clazz(oop reflect);
 699   static void set_clazz(oop reflect, oop value);
 700 
 701   static oop name(oop field);
 702   static void set_name(oop field, oop value);
 703 
 704   static oop type(oop field);
 705   static void set_type(oop field, oop value);
 706 
 707   static int slot(oop reflect);
 708   static void set_slot(oop reflect, int value);
 709 
 710   static int modifiers(oop field);
 711   static void set_modifiers(oop field, int value);
 712 
 713   static bool has_signature_field();
 714   static oop signature(oop constructor);
 715   static void set_signature(oop constructor, oop value);
 716 
 717   static bool has_annotations_field();
 718   static oop annotations(oop constructor);
 719   static void set_annotations(oop constructor, oop value);
 720 
 721   static bool has_parameter_annotations_field();
 722   static oop parameter_annotations(oop method);
 723   static void set_parameter_annotations(oop method, oop value);
 724 
 725   static bool has_annotation_default_field();
 726   static oop annotation_default(oop method);
 727   static void set_annotation_default(oop method, oop value);
 728 
 729   static bool has_type_annotations_field();
 730   static oop type_annotations(oop field);
 731   static void set_type_annotations(oop field, oop value);
 732 
 733   // Debugging
 734   friend class JavaClasses;
 735 };
 736 
 737 class java_lang_reflect_Parameter {
 738  private:
 739   // Note that to reduce dependencies on the JDK we compute these
 740   // offsets at run-time.
 741   static int name_offset;
 742   static int modifiers_offset;
 743   static int index_offset;
 744   static int executable_offset;
 745 
 746   static void compute_offsets();
 747 
 748  public:
 749   // Allocation
 750   static Handle create(TRAPS);
 751 
 752   // Accessors
 753   static oop name(oop field);
 754   static void set_name(oop field, oop value);
 755 
 756   static int index(oop reflect);
 757   static void set_index(oop reflect, int value);
 758 
 759   static int modifiers(oop reflect);
 760   static void set_modifiers(oop reflect, int value);
 761 
 762   static oop executable(oop constructor);
 763   static void set_executable(oop constructor, oop value);
 764 
 765   friend class JavaClasses;
 766 };
 767 
 768 #define MODULE_INJECTED_FIELDS(macro)                            \
 769   macro(java_lang_reflect_Module, module_entry, intptr_signature, false)
 770 
 771 class java_lang_reflect_Module {
 772   private:
 773     static int loader_offset;
 774     static int name_offset;
 775     static int _module_entry_offset;
 776     static void compute_offsets();
 777 
 778   public:
 779     // Allocation
 780     static Handle create(Handle loader, Handle module_name, TRAPS);
 781 
 782     // Testers
 783     static bool is_subclass(Klass* klass) {
 784       return klass->is_subclass_of(SystemDictionary::reflect_Module_klass());
 785     }
 786     static bool is_instance(oop obj);
 787 
 788     // Accessors
 789     static oop loader(oop module);
 790     static void set_loader(oop module, oop value);
 791 
 792     static oop name(oop module);
 793     static void set_name(oop module, oop value);
 794 
 795     static ModuleEntry* module_entry(oop module, TRAPS);
 796     static void set_module_entry(oop module, ModuleEntry* module_entry);
 797 
 798   friend class JavaClasses;
 799 };
 800 
 801 // Interface to jdk.internal.reflect.ConstantPool objects
 802 class reflect_ConstantPool {
 803  private:
 804   // Note that to reduce dependencies on the JDK we compute these
 805   // offsets at run-time.
 806   static int _oop_offset;
 807 
 808   static void compute_offsets();
 809 
 810  public:
 811   // Allocation
 812   static Handle create(TRAPS);
 813 
 814   // Accessors
 815   static void set_cp(oop reflect, ConstantPool* value);
 816   static int oop_offset() {
 817     return _oop_offset;
 818   }
 819 
 820   static ConstantPool* get_cp(oop reflect);
 821 
 822   // Debugging
 823   friend class JavaClasses;
 824 };
 825 
 826 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
 827 class reflect_UnsafeStaticFieldAccessorImpl {
 828  private:
 829   static int _base_offset;
 830   static void compute_offsets();
 831 
 832  public:
 833   static int base_offset() {
 834     return _base_offset;
 835   }
 836 
 837   // Debugging
 838   friend class JavaClasses;
 839 };
 840 
 841 // Interface to java.lang primitive type boxing objects:
 842 //  - java.lang.Boolean
 843 //  - java.lang.Character
 844 //  - java.lang.Float
 845 //  - java.lang.Double
 846 //  - java.lang.Byte
 847 //  - java.lang.Short
 848 //  - java.lang.Integer
 849 //  - java.lang.Long
 850 
 851 // This could be separated out into 8 individual classes.
 852 
 853 class java_lang_boxing_object: AllStatic {
 854  private:
 855   enum {
 856    hc_value_offset = 0
 857   };
 858   static int value_offset;
 859   static int long_value_offset;
 860 
 861   static oop initialize_and_allocate(BasicType type, TRAPS);
 862  public:
 863   // Allocation. Returns a boxed value, or NULL for invalid type.
 864   static oop create(BasicType type, jvalue* value, TRAPS);
 865   // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
 866   static BasicType get_value(oop box, jvalue* value);
 867   static BasicType set_value(oop box, jvalue* value);
 868   static BasicType basic_type(oop box);
 869   static bool is_instance(oop box)                 { return basic_type(box) != T_ILLEGAL; }
 870   static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
 871   static void print(oop box, outputStream* st)     { jvalue value;  print(get_value(box, &value), &value, st); }
 872   static void print(BasicType type, jvalue* value, outputStream* st);
 873 
 874   static int value_offset_in_bytes(BasicType type) {
 875     return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
 876                                                     value_offset;
 877   }
 878 
 879   // Debugging
 880   friend class JavaClasses;
 881 };
 882 
 883 
 884 
 885 // Interface to java.lang.ref.Reference objects
 886 
 887 class java_lang_ref_Reference: AllStatic {
 888  public:
 889   enum {
 890    hc_referent_offset   = 0,
 891    hc_queue_offset      = 1,
 892    hc_next_offset       = 2,
 893    hc_discovered_offset = 3  // Is not last, see SoftRefs.
 894   };
 895   enum {
 896    hc_static_lock_offset    = 0,
 897    hc_static_pending_offset = 1
 898   };
 899 
 900   static int referent_offset;
 901   static int queue_offset;
 902   static int next_offset;
 903   static int discovered_offset;
 904   static int static_lock_offset;
 905   static int static_pending_offset;
 906   static int number_of_fake_oop_fields;
 907 
 908   // Accessors
 909   static inline oop referent(oop ref);
 910   static inline void set_referent(oop ref, oop value);
 911   static inline void set_referent_raw(oop ref, oop value);
 912   static inline HeapWord* referent_addr(oop ref);
 913   static inline oop next(oop ref);
 914   static inline void set_next(oop ref, oop value);
 915   static inline void set_next_raw(oop ref, oop value);
 916   static inline HeapWord* next_addr(oop ref);
 917   static inline oop discovered(oop ref);
 918   static inline void set_discovered(oop ref, oop value);
 919   static inline void set_discovered_raw(oop ref, oop value);
 920   static inline HeapWord* discovered_addr(oop ref);
 921 
 922   // Accessors for statics
 923   static oop  pending_list_lock();
 924   static oop  pending_list();
 925 
 926   static HeapWord*  pending_list_lock_addr();
 927   static HeapWord*  pending_list_addr();
 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   enum {
 936    // The timestamp is a long field and may need to be adjusted for alignment.
 937    hc_timestamp_offset  = hc_discovered_offset + 1
 938   };
 939   enum {
 940    hc_static_clock_offset = 0
 941   };
 942 
 943   static int timestamp_offset;
 944   static int static_clock_offset;
 945 
 946   // Accessors
 947   static jlong timestamp(oop ref);
 948 
 949   // Accessors for statics
 950   static jlong clock();
 951   static void set_clock(jlong value);
 952 };
 953 
 954 // Interface to java.lang.invoke.MethodHandle objects
 955 
 956 class MethodHandleEntry;
 957 
 958 class java_lang_invoke_MethodHandle: AllStatic {
 959   friend class JavaClasses;
 960 
 961  private:
 962   static int _type_offset;               // the MethodType of this MH
 963   static int _form_offset;               // the LambdaForm of this MH
 964 
 965   static void compute_offsets();
 966 
 967  public:
 968   // Accessors
 969   static oop            type(oop mh);
 970   static void       set_type(oop mh, oop mtype);
 971 
 972   static oop            form(oop mh);
 973   static void       set_form(oop mh, oop lform);
 974 
 975   // Testers
 976   static bool is_subclass(Klass* klass) {
 977     return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
 978   }
 979   static bool is_instance(oop obj);
 980 
 981   // Accessors for code generation:
 982   static int type_offset_in_bytes()             { return _type_offset; }
 983   static int form_offset_in_bytes()             { return _form_offset; }
 984 };
 985 
 986 // Interface to java.lang.invoke.DirectMethodHandle objects
 987 
 988 class java_lang_invoke_DirectMethodHandle: AllStatic {
 989   friend class JavaClasses;
 990 
 991  private:
 992   static int _member_offset;               // the MemberName of this DMH
 993 
 994   static void compute_offsets();
 995 
 996  public:
 997   // Accessors
 998   static oop  member(oop mh);
 999 
1000   // Testers
1001   static bool is_subclass(Klass* klass) {
1002     return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1003   }
1004   static bool is_instance(oop obj);
1005 
1006   // Accessors for code generation:
1007   static int member_offset_in_bytes()           { return _member_offset; }
1008 };
1009 
1010 // Interface to java.lang.invoke.LambdaForm objects
1011 // (These are a private interface for managing adapter code generation.)
1012 
1013 class java_lang_invoke_LambdaForm: AllStatic {
1014   friend class JavaClasses;
1015 
1016  private:
1017   static int _vmentry_offset;  // type is MemberName
1018 
1019   static void compute_offsets();
1020 
1021  public:
1022   // Accessors
1023   static oop            vmentry(oop lform);
1024   static void       set_vmentry(oop lform, oop invoker);
1025 
1026   // Testers
1027   static bool is_subclass(Klass* klass) {
1028     return SystemDictionary::LambdaForm_klass() != NULL &&
1029       klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1030   }
1031   static bool is_instance(oop obj);
1032 
1033   // Accessors for code generation:
1034   static int vmentry_offset_in_bytes()          { return _vmentry_offset; }
1035 };
1036 
1037 
1038 // Interface to java.lang.invoke.MemberName objects
1039 // (These are a private interface for Java code to query the class hierarchy.)
1040 
1041 #define MEMBERNAME_INJECTED_FIELDS(macro)                               \
1042   macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \
1043   macro(java_lang_invoke_MemberName, vmindex,  intptr_signature, false) \
1044   macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false)
1045 
1046 class java_lang_invoke_MemberName: AllStatic {
1047   friend class JavaClasses;
1048 
1049  private:
1050   // From java.lang.invoke.MemberName:
1051   //    private Class<?>   clazz;       // class in which the method is defined
1052   //    private String     name;        // may be null if not yet materialized
1053   //    private Object     type;        // may be null if not yet materialized
1054   //    private int        flags;       // modifier bits; see reflect.Modifier
1055   //    private intptr     vmtarget;    // VM-specific target value
1056   //    private intptr_t   vmindex;     // member index within class or interface
1057   static int _clazz_offset;
1058   static int _name_offset;
1059   static int _type_offset;
1060   static int _flags_offset;
1061   static int _vmtarget_offset;
1062   static int _vmloader_offset;
1063   static int _vmindex_offset;
1064 
1065   static void compute_offsets();
1066 
1067  public:
1068   // Accessors
1069   static oop            clazz(oop mname);
1070   static void       set_clazz(oop mname, oop clazz);
1071 
1072   static oop            type(oop mname);
1073   static void       set_type(oop mname, oop type);
1074 
1075   static oop            name(oop mname);
1076   static void       set_name(oop mname, oop name);
1077 
1078   static int            flags(oop mname);
1079   static void       set_flags(oop mname, int flags);
1080 
1081   static Metadata*      vmtarget(oop mname);
1082   static void       set_vmtarget(oop mname, Metadata* target);
1083 
1084   static intptr_t       vmindex(oop mname);
1085   static void       set_vmindex(oop mname, intptr_t index);
1086 
1087   // Testers
1088   static bool is_subclass(Klass* klass) {
1089     return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1090   }
1091   static bool is_instance(oop obj);
1092 
1093   static bool is_method(oop obj);
1094 
1095   // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1096   enum {
1097     MN_IS_METHOD            = 0x00010000, // method (not constructor)
1098     MN_IS_CONSTRUCTOR       = 0x00020000, // constructor
1099     MN_IS_FIELD             = 0x00040000, // field
1100     MN_IS_TYPE              = 0x00080000, // nested type
1101     MN_CALLER_SENSITIVE     = 0x00100000, // @CallerSensitive annotation detected
1102     MN_REFERENCE_KIND_SHIFT = 24, // refKind
1103     MN_REFERENCE_KIND_MASK  = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1104     // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1105     MN_SEARCH_SUPERCLASSES  = 0x00100000, // walk super classes
1106     MN_SEARCH_INTERFACES    = 0x00200000  // walk implemented interfaces
1107   };
1108 
1109   // Accessors for code generation:
1110   static int clazz_offset_in_bytes()            { return _clazz_offset; }
1111   static int type_offset_in_bytes()             { return _type_offset; }
1112   static int name_offset_in_bytes()             { return _name_offset; }
1113   static int flags_offset_in_bytes()            { return _flags_offset; }
1114   static int vmtarget_offset_in_bytes()         { return _vmtarget_offset; }
1115   static int vmindex_offset_in_bytes()          { return _vmindex_offset; }
1116 
1117   static bool equals(oop mt1, oop mt2);
1118 };
1119 
1120 
1121 // Interface to java.lang.invoke.MethodType objects
1122 
1123 class java_lang_invoke_MethodType: AllStatic {
1124   friend class JavaClasses;
1125 
1126  private:
1127   static int _rtype_offset;
1128   static int _ptypes_offset;
1129 
1130   static void compute_offsets();
1131 
1132  public:
1133   // Accessors
1134   static oop            rtype(oop mt);
1135   static objArrayOop    ptypes(oop mt);
1136 
1137   static oop            ptype(oop mt, int index);
1138   static int            ptype_count(oop mt);
1139 
1140   static int            ptype_slot_count(oop mt);  // extra counts for long/double
1141   static int            rtype_slot_count(oop mt);  // extra counts for long/double
1142 
1143   static Symbol*        as_signature(oop mt, bool intern_if_not_found, TRAPS);
1144   static void           print_signature(oop mt, outputStream* st);
1145 
1146   static bool is_instance(oop obj);
1147 
1148   static bool equals(oop mt1, oop mt2);
1149 
1150   // Accessors for code generation:
1151   static int rtype_offset_in_bytes()            { return _rtype_offset; }
1152   static int ptypes_offset_in_bytes()           { return _ptypes_offset; }
1153 };
1154 
1155 
1156 // Interface to java.lang.invoke.CallSite objects
1157 
1158 class java_lang_invoke_CallSite: AllStatic {
1159   friend class JavaClasses;
1160 
1161 private:
1162   static int _target_offset;
1163   static int _context_offset;
1164 
1165   static void compute_offsets();
1166 
1167 public:
1168   // Accessors
1169   static oop              target(          oop site);
1170   static void         set_target(          oop site, oop target);
1171   static void         set_target_volatile( oop site, oop target);
1172 
1173   static oop              context(oop site);
1174 
1175   // Testers
1176   static bool is_subclass(Klass* klass) {
1177     return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1178   }
1179   static bool is_instance(oop obj);
1180 
1181   // Accessors for code generation:
1182   static int target_offset_in_bytes()           { return _target_offset; }
1183 };
1184 
1185 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1186 
1187 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1188   macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false)
1189 
1190 class DependencyContext;
1191 
1192 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1193   friend class JavaClasses;
1194 
1195 private:
1196   static int _vmdependencies_offset;
1197 
1198   static void compute_offsets();
1199 
1200 public:
1201   // Accessors
1202   static DependencyContext vmdependencies(oop context);
1203 
1204   // Testers
1205   static bool is_subclass(Klass* klass) {
1206     return klass->is_subclass_of(SystemDictionary::Context_klass());
1207   }
1208   static bool is_instance(oop obj);
1209 };
1210 
1211 // Interface to java.security.AccessControlContext objects
1212 
1213 class java_security_AccessControlContext: AllStatic {
1214  private:
1215   // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1216   // so we compute the offsets at startup rather than hard-wiring them.
1217   static int _context_offset;
1218   static int _privilegedContext_offset;
1219   static int _isPrivileged_offset;
1220   static int _isAuthorized_offset;
1221 
1222   static void compute_offsets();
1223  public:
1224   static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1225 
1226   static bool is_authorized(Handle context);
1227 
1228   // Debugging/initialization
1229   friend class JavaClasses;
1230 };
1231 
1232 
1233 // Interface to java.lang.ClassLoader objects
1234 
1235 #define CLASSLOADER_INJECTED_FIELDS(macro)                            \
1236   macro(java_lang_ClassLoader, loader_data,  intptr_signature, false)
1237 
1238 class java_lang_ClassLoader : AllStatic {
1239  private:
1240   // The fake offsets are added by the class loader when java.lang.Class is loaded
1241   enum {
1242    hc_parent_offset = 0
1243   };
1244   static int _loader_data_offset;
1245   static bool offsets_computed;
1246   static int parent_offset;
1247   static int parallelCapable_offset;
1248   static int unnamedModule_offset;
1249 
1250  public:
1251   static void compute_offsets();
1252 
1253   static ClassLoaderData** loader_data_addr(oop loader);
1254   static ClassLoaderData* loader_data(oop loader);
1255 
1256   static oop parent(oop loader);
1257   static bool isAncestor(oop loader, oop cl);
1258 
1259   // Support for parallelCapable field
1260   static bool parallelCapable(oop the_class_mirror);
1261 
1262   static bool is_trusted_loader(oop loader);
1263 
1264   // Fix for 4474172
1265   static oop  non_reflection_class_loader(oop loader);
1266 
1267   // Testers
1268   static bool is_subclass(Klass* klass) {
1269     return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1270   }
1271   static bool is_instance(oop obj);
1272 
1273   static oop unnamedModule(oop loader);
1274 
1275   // Debugging
1276   friend class JavaClasses;
1277   friend class ClassFileParser; // access to number_of_fake_fields
1278 };
1279 
1280 
1281 // Interface to java.lang.System objects
1282 
1283 class java_lang_System : AllStatic {
1284  private:
1285   enum {
1286    hc_static_in_offset  = 0,
1287    hc_static_out_offset = 1,
1288    hc_static_err_offset = 2,
1289    hc_static_security_offset = 3
1290   };
1291 
1292   static int  static_in_offset;
1293   static int static_out_offset;
1294   static int static_err_offset;
1295   static int static_security_offset;
1296 
1297  public:
1298   static int  in_offset_in_bytes();
1299   static int out_offset_in_bytes();
1300   static int err_offset_in_bytes();
1301 
1302   static bool has_security_manager();
1303 
1304   // Debugging
1305   friend class JavaClasses;
1306 };
1307 
1308 
1309 // Interface to java.lang.StackTraceElement objects
1310 
1311 class java_lang_StackTraceElement: AllStatic {
1312  private:
1313   enum {
1314     hc_moduleName_offset = 0,
1315     hc_moduleVersion_offset = 1,
1316     hc_declaringClass_offset = 2,
1317     hc_methodName_offset = 3,
1318     hc_fileName_offset   = 4,
1319     hc_lineNumber_offset = 5
1320   };
1321 
1322   static int moduleName_offset;
1323   static int moduleVersion_offset;
1324   static int declaringClass_offset;
1325   static int methodName_offset;
1326   static int fileName_offset;
1327   static int lineNumber_offset;
1328 
1329   // Setters
1330   static void set_moduleName(oop element, oop value);
1331   static void set_moduleVersion(oop element, oop value);
1332   static void set_declaringClass(oop element, oop value);
1333   static void set_methodName(oop element, oop value);
1334   static void set_fileName(oop element, oop value);
1335   static void set_lineNumber(oop element, int value);
1336 
1337  public:
1338   // Create an instance of StackTraceElement
1339   static oop create(const methodHandle& method, int bci, TRAPS);
1340 
1341   static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1342                       int version, int bci, int cpref, TRAPS);
1343 
1344   // Debugging
1345   friend class JavaClasses;
1346 };
1347 
1348 
1349 class Backtrace: AllStatic {
1350  public:
1351   // Helper backtrace functions to store bci|version together.
1352   static int merge_bci_and_version(int bci, int version);
1353   static int merge_mid_and_cpref(int mid, int cpref);
1354   static int bci_at(unsigned int merged);
1355   static int version_at(unsigned int merged);
1356   static int mid_at(unsigned int merged);
1357   static int cpref_at(unsigned int merged);
1358   static int get_line_number(const methodHandle& method, int bci);
1359   static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1360 
1361   // Debugging
1362   friend class JavaClasses;
1363 };
1364 
1365 // Interface to java.lang.StackFrameInfo objects
1366 
1367 #define STACKFRAMEINFO_INJECTED_FIELDS(macro)                      \
1368   macro(java_lang_StackFrameInfo, version, short_signature, false)
1369 
1370 class java_lang_StackFrameInfo: AllStatic {
1371 private:
1372   static int _declaringClass_offset;
1373   static int _memberName_offset;
1374   static int _bci_offset;
1375   static int _version_offset;
1376 
1377   static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1378 
1379 public:
1380   // Setters
1381   static void set_declaringClass(oop info, oop value);
1382   static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci);
1383   static void set_bci(oop info, int value);
1384 
1385   static void set_version(oop info, short value);
1386 
1387   static void compute_offsets();
1388 
1389   static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1390 
1391   // Debugging
1392   friend class JavaClasses;
1393 };
1394 
1395 class java_lang_LiveStackFrameInfo: AllStatic {
1396  private:
1397   static int _monitors_offset;
1398   static int _locals_offset;
1399   static int _operands_offset;
1400 
1401  public:
1402   static void set_monitors(oop info, oop value);
1403   static void set_locals(oop info, oop value);
1404   static void set_operands(oop info, oop value);
1405 
1406   static void compute_offsets();
1407 
1408   // Debugging
1409   friend class JavaClasses;
1410 };
1411 
1412 // Interface to java.lang.AssertionStatusDirectives objects
1413 
1414 class java_lang_AssertionStatusDirectives: AllStatic {
1415  private:
1416   enum {
1417     hc_classes_offset,
1418     hc_classEnabled_offset,
1419     hc_packages_offset,
1420     hc_packageEnabled_offset,
1421     hc_deflt_offset
1422   };
1423 
1424   static int classes_offset;
1425   static int classEnabled_offset;
1426   static int packages_offset;
1427   static int packageEnabled_offset;
1428   static int deflt_offset;
1429 
1430  public:
1431   // Setters
1432   static void set_classes(oop obj, oop val);
1433   static void set_classEnabled(oop obj, oop val);
1434   static void set_packages(oop obj, oop val);
1435   static void set_packageEnabled(oop obj, oop val);
1436   static void set_deflt(oop obj, bool val);
1437   // Debugging
1438   friend class JavaClasses;
1439 };
1440 
1441 
1442 class java_nio_Buffer: AllStatic {
1443  private:
1444   static int _limit_offset;
1445 
1446  public:
1447   static int  limit_offset();
1448   static void compute_offsets();
1449 };
1450 
1451 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1452  private:
1453   static int  _owner_offset;
1454  public:
1455   static void initialize(TRAPS);
1456   static oop  get_owner_threadObj(oop obj);
1457 };
1458 
1459 // Use to declare fields that need to be injected into Java classes
1460 // for the JVM to use.  The name_index and signature_index are
1461 // declared in vmSymbols.  The may_be_java flag is used to declare
1462 // fields that might already exist in Java but should be injected if
1463 // they don't.  Otherwise the field is unconditionally injected and
1464 // the JVM uses the injected one.  This is to ensure that name
1465 // collisions don't occur.  In general may_be_java should be false
1466 // unless there's a good reason.
1467 
1468 class InjectedField {
1469  public:
1470   const SystemDictionary::WKID klass_id;
1471   const vmSymbols::SID name_index;
1472   const vmSymbols::SID signature_index;
1473   const bool           may_be_java;
1474 
1475 
1476   Klass* klass() const    { return SystemDictionary::well_known_klass(klass_id); }
1477   Symbol* name() const      { return lookup_symbol(name_index); }
1478   Symbol* signature() const { return lookup_symbol(signature_index); }
1479 
1480   int compute_offset();
1481 
1482   // Find the Symbol for this index
1483   static Symbol* lookup_symbol(int symbol_index) {
1484     return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1485   }
1486 };
1487 
1488 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1489   klass##_##name##_enum,
1490 
1491 #define ALL_INJECTED_FIELDS(macro)          \
1492   CLASS_INJECTED_FIELDS(macro)              \
1493   CLASSLOADER_INJECTED_FIELDS(macro)        \
1494   MEMBERNAME_INJECTED_FIELDS(macro)         \
1495   CALLSITECONTEXT_INJECTED_FIELDS(macro)    \
1496   STACKFRAMEINFO_INJECTED_FIELDS(macro)     \
1497   MODULE_INJECTED_FIELDS(macro)
1498 
1499 // Interface to hard-coded offset checking
1500 
1501 class JavaClasses : AllStatic {
1502  private:
1503 
1504   static InjectedField _injected_fields[];
1505 
1506   static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1507   static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1508   static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1509 
1510  public:
1511   enum InjectedFieldID {
1512     ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1513     MAX_enum
1514   };
1515 
1516   static int compute_injected_offset(InjectedFieldID id);
1517 
1518   static void compute_hard_coded_offsets();
1519   static void compute_offsets();
1520   static void check_offsets() PRODUCT_RETURN;
1521 
1522   static InjectedField* get_injected(Symbol* class_name, int* field_count);
1523 };
1524 
1525 #undef DECLARE_INJECTED_FIELD_ENUM
1526 
1527 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP
--- EOF ---