1 /* 2 * Copyright (c) 1997, 2015, 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 offset_offset; 57 static int count_offset; 58 static int hash_offset; 59 60 static bool initialized; 61 62 static Handle basic_create(int length, TRAPS); 63 64 static void set_offset(oop string, int offset) { 65 assert(initialized, "Must be initialized"); 66 if (offset_offset > 0) { 67 string->int_field_put(offset_offset, offset); 68 } 69 } 70 static void set_count( oop string, int count) { 71 assert(initialized, "Must be initialized"); 72 if (count_offset > 0) { 73 string->int_field_put(count_offset, count); 74 } 75 } 76 77 public: 78 static void compute_offsets(); 79 80 // Instance creation 81 static Handle create_from_unicode(jchar* unicode, int len, TRAPS); 82 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS); 83 static Handle create_from_str(const char* utf8_str, TRAPS); 84 static oop create_oop_from_str(const char* utf8_str, TRAPS); 85 static Handle create_from_symbol(Symbol* symbol, TRAPS); 86 static Handle create_from_platform_dependent_str(const char* str, TRAPS); 87 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS); 88 89 static bool has_offset_field() { 90 assert(initialized, "Must be initialized"); 91 return (offset_offset > 0); 92 } 93 94 static bool has_count_field() { 95 assert(initialized, "Must be initialized"); 96 return (count_offset > 0); 97 } 98 99 static bool has_hash_field() { 100 assert(initialized, "Must be initialized"); 101 return (hash_offset > 0); 102 } 103 104 static int value_offset_in_bytes() { 105 assert(initialized && (value_offset > 0), "Must be initialized"); 106 return value_offset; 107 } 108 static int count_offset_in_bytes() { 109 assert(initialized && (count_offset > 0), "Must be initialized"); 110 return count_offset; 111 } 112 static int offset_offset_in_bytes() { 113 assert(initialized && (offset_offset > 0), "Must be initialized"); 114 return offset_offset; 115 } 116 static int hash_offset_in_bytes() { 117 assert(initialized && (hash_offset > 0), "Must be initialized"); 118 return hash_offset; 119 } 120 121 static void set_value(oop string, typeArrayOop buffer) { 122 assert(initialized && (value_offset > 0), "Must be initialized"); 123 string->obj_field_put(value_offset, (oop)buffer); 124 } 125 static void set_hash(oop string, unsigned int hash) { 126 assert(initialized && (hash_offset > 0), "Must be initialized"); 127 string->int_field_put(hash_offset, hash); 128 } 129 130 // Accessors 131 static typeArrayOop value(oop java_string) { 132 assert(initialized && (value_offset > 0), "Must be initialized"); 133 assert(is_instance(java_string), "must be java_string"); 134 return (typeArrayOop) java_string->obj_field(value_offset); 135 } 136 static unsigned int hash(oop java_string) { 137 assert(initialized && (hash_offset > 0), "Must be initialized"); 138 assert(is_instance(java_string), "must be java_string"); 139 return java_string->int_field(hash_offset); 140 } 141 static int offset(oop java_string) { 142 assert(initialized, "Must be initialized"); 143 assert(is_instance(java_string), "must be java_string"); 144 if (offset_offset > 0) { 145 return java_string->int_field(offset_offset); 146 } else { 147 return 0; 148 } 149 } 150 static int length(oop java_string) { 151 assert(initialized, "Must be initialized"); 152 assert(is_instance(java_string), "must be java_string"); 153 if (count_offset > 0) { 154 return java_string->int_field(count_offset); 155 } else { 156 return ((typeArrayOop)java_string->obj_field(value_offset))->length(); 157 } 158 } 159 static int utf8_length(oop java_string); 160 161 // String converters 162 static char* as_utf8_string(oop java_string); 163 static char* as_utf8_string(oop java_string, char* buf, int buflen); 164 static char* as_utf8_string(oop java_string, int start, int len); 165 static char* as_utf8_string(oop java_string, int start, int len, char* buf, int buflen); 166 static char* as_platform_dependent_str(Handle java_string, TRAPS); 167 static jchar* as_unicode_string(oop java_string, int& length, TRAPS); 168 // produce an ascii string with all other values quoted using \u#### 169 static char* as_quoted_ascii(oop java_string); 170 171 // Compute the hash value for a java.lang.String object which would 172 // contain the characters passed in. 173 // 174 // As the hash value used by the String object itself, in 175 // String.hashCode(). This value is normally calculated in Java code 176 // in the String.hashCode method(), but is precomputed for String 177 // objects in the shared archive file. 178 // hash P(31) from Kernighan & Ritchie 179 // 180 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode(). 181 template <typename T> static unsigned int hash_code(T* s, int len) { 182 unsigned int h = 0; 183 while (len-- > 0) { 184 h = 31*h + (unsigned int) *s; 185 s++; 186 } 187 return h; 188 } 189 static unsigned int hash_code(oop java_string); 190 191 // This is the string hash code used by the StringTable, which may be 192 // the same as String.hashCode or an alternate hash code. 193 static unsigned int hash_string(oop java_string); 194 195 static bool equals(oop java_string, jchar* chars, int len); 196 static bool equals(oop str1, oop str2); 197 198 // Conversion between '.' and '/' formats 199 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); } 200 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); } 201 202 // Conversion 203 static Symbol* as_symbol(Handle java_string, TRAPS); 204 static Symbol* as_symbol_or_null(oop java_string); 205 206 // Testers 207 static bool is_instance(oop obj); 208 static bool is_instance_inlined(oop obj); 209 210 // Debugging 211 static void print(oop java_string, outputStream* st); 212 friend class JavaClasses; 213 }; 214 215 216 // Interface to java.lang.Class objects 217 218 #define CLASS_INJECTED_FIELDS(macro) \ 219 macro(java_lang_Class, klass, intptr_signature, false) \ 220 macro(java_lang_Class, array_klass, intptr_signature, false) \ 221 macro(java_lang_Class, oop_size, int_signature, false) \ 222 macro(java_lang_Class, static_oop_field_count, int_signature, false) \ 223 macro(java_lang_Class, protection_domain, object_signature, false) \ 224 macro(java_lang_Class, signers, object_signature, false) 225 226 class java_lang_Class : AllStatic { 227 friend class VMStructs; 228 229 private: 230 // The fake offsets are added by the class loader when java.lang.Class is loaded 231 232 static int _klass_offset; 233 static int _array_klass_offset; 234 235 static int _oop_size_offset; 236 static int _static_oop_field_count_offset; 237 238 static int _protection_domain_offset; 239 static int _init_lock_offset; 240 static int _signers_offset; 241 static int _class_loader_offset; 242 static int _component_mirror_offset; 243 244 static bool offsets_computed; 245 static int classRedefinedCount_offset; 246 247 static GrowableArray<Klass*>* _fixup_mirror_list; 248 249 static void set_init_lock(oop java_class, oop init_lock); 250 static void set_protection_domain(oop java_class, oop protection_domain); 251 static void set_class_loader(oop java_class, oop class_loader); 252 static void set_component_mirror(oop java_class, oop comp_mirror); 253 static void initialize_mirror_fields(KlassHandle k, Handle mirror, Handle protection_domain, TRAPS); 254 public: 255 static void compute_offsets(); 256 257 // Instance creation 258 static void create_mirror(KlassHandle k, Handle class_loader, 259 Handle protection_domain, TRAPS); 260 static void fixup_mirror(KlassHandle k, TRAPS); 261 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); 262 // Conversion 263 static Klass* as_Klass(oop java_class); 264 static void set_klass(oop java_class, Klass* klass); 265 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL); 266 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) { 267 Klass* refk_oop = NULL; 268 BasicType result = as_BasicType(java_class, &refk_oop); 269 (*reference_klass) = KlassHandle(refk_oop); 270 return result; 271 } 272 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS); 273 static void print_signature(oop java_class, outputStream *st); 274 // Testing 275 static bool is_instance(oop obj); 276 277 static bool is_primitive(oop java_class); 278 static BasicType primitive_type(oop java_class); 279 static oop primitive_mirror(BasicType t); 280 // JVM_NewArray support 281 static Klass* array_klass(oop java_class); 282 static void set_array_klass(oop java_class, Klass* klass); 283 // compiler support for class operations 284 static int klass_offset_in_bytes() { return _klass_offset; } 285 static int array_klass_offset_in_bytes() { return _array_klass_offset; } 286 // Support for classRedefinedCount field 287 static int classRedefinedCount(oop the_class_mirror); 288 static void set_classRedefinedCount(oop the_class_mirror, int value); 289 290 // Support for embedded per-class oops 291 static oop protection_domain(oop java_class); 292 static oop init_lock(oop java_class); 293 static oop component_mirror(oop java_class); 294 static objArrayOop signers(oop java_class); 295 static void set_signers(oop java_class, objArrayOop signers); 296 297 static oop class_loader(oop java_class); 298 299 static int oop_size(oop java_class); 300 static void set_oop_size(oop java_class, int size); 301 static int static_oop_field_count(oop java_class); 302 static void set_static_oop_field_count(oop java_class, int size); 303 304 static GrowableArray<Klass*>* fixup_mirror_list() { 305 return _fixup_mirror_list; 306 } 307 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) { 308 _fixup_mirror_list = v; 309 } 310 // Debugging 311 friend class JavaClasses; 312 friend class InstanceKlass; // verification code accesses offsets 313 friend class ClassFileParser; // access to number_of_fake_fields 314 }; 315 316 // Interface to java.lang.Thread objects 317 318 class java_lang_Thread : AllStatic { 319 private: 320 // Note that for this class the layout changed between JDK1.2 and JDK1.3, 321 // so we compute the offsets at startup rather than hard-wiring them. 322 static int _name_offset; 323 static int _group_offset; 324 static int _contextClassLoader_offset; 325 static int _inheritedAccessControlContext_offset; 326 static int _priority_offset; 327 static int _eetop_offset; 328 static int _daemon_offset; 329 static int _stillborn_offset; 330 static int _stackSize_offset; 331 static int _tid_offset; 332 static int _thread_status_offset; 333 static int _park_blocker_offset; 334 static int _park_event_offset ; 335 336 static void compute_offsets(); 337 338 public: 339 // Instance creation 340 static oop create(); 341 // Returns the JavaThread associated with the thread obj 342 static JavaThread* thread(oop java_thread); 343 // Set JavaThread for instance 344 static void set_thread(oop java_thread, JavaThread* thread); 345 // Name 346 static oop name(oop java_thread); 347 static void set_name(oop java_thread, oop name); 348 // Priority 349 static ThreadPriority priority(oop java_thread); 350 static void set_priority(oop java_thread, ThreadPriority priority); 351 // Thread group 352 static oop threadGroup(oop java_thread); 353 // Stillborn 354 static bool is_stillborn(oop java_thread); 355 static void set_stillborn(oop java_thread); 356 // Alive (NOTE: this is not really a field, but provides the correct 357 // definition without doing a Java call) 358 static bool is_alive(oop java_thread); 359 // Daemon 360 static bool is_daemon(oop java_thread); 361 static void set_daemon(oop java_thread); 362 // Context ClassLoader 363 static oop context_class_loader(oop java_thread); 364 // Control context 365 static oop inherited_access_control_context(oop java_thread); 366 // Stack size hint 367 static jlong stackSize(oop java_thread); 368 // Thread ID 369 static jlong thread_id(oop java_thread); 370 371 // Blocker object responsible for thread parking 372 static oop park_blocker(oop java_thread); 373 374 // Pointer to type-stable park handler, encoded as jlong. 375 // Should be set when apparently null 376 // For details, see unsafe.cpp Unsafe_Unpark 377 static jlong park_event(oop java_thread); 378 static bool set_park_event(oop java_thread, jlong ptr); 379 380 // Java Thread Status for JVMTI and M&M use. 381 // This thread status info is saved in threadStatus field of 382 // java.lang.Thread java class. 383 enum ThreadStatus { 384 NEW = 0, 385 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running 386 JVMTI_THREAD_STATE_RUNNABLE, 387 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() 388 JVMTI_THREAD_STATE_WAITING + 389 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + 390 JVMTI_THREAD_STATE_SLEEPING, 391 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() 392 JVMTI_THREAD_STATE_WAITING + 393 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + 394 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, 395 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) 396 JVMTI_THREAD_STATE_WAITING + 397 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + 398 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, 399 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() 400 JVMTI_THREAD_STATE_WAITING + 401 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + 402 JVMTI_THREAD_STATE_PARKED, 403 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) 404 JVMTI_THREAD_STATE_WAITING + 405 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + 406 JVMTI_THREAD_STATE_PARKED, 407 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block 408 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, 409 TERMINATED = JVMTI_THREAD_STATE_TERMINATED 410 }; 411 // Write thread status info to threadStatus field of java.lang.Thread. 412 static void set_thread_status(oop java_thread_oop, ThreadStatus status); 413 // Read thread status info from threadStatus field of java.lang.Thread. 414 static ThreadStatus get_thread_status(oop java_thread_oop); 415 416 static const char* thread_status_name(oop java_thread_oop); 417 418 // Debugging 419 friend class JavaClasses; 420 }; 421 422 // Interface to java.lang.ThreadGroup objects 423 424 class java_lang_ThreadGroup : AllStatic { 425 private: 426 static int _parent_offset; 427 static int _name_offset; 428 static int _threads_offset; 429 static int _groups_offset; 430 static int _maxPriority_offset; 431 static int _destroyed_offset; 432 static int _daemon_offset; 433 static int _vmAllowSuspension_offset; 434 static int _nthreads_offset; 435 static int _ngroups_offset; 436 437 static void compute_offsets(); 438 439 public: 440 // parent ThreadGroup 441 static oop parent(oop java_thread_group); 442 // name 443 static typeArrayOop name(oop java_thread_group); 444 // ("name as oop" accessor is not necessary) 445 // Number of threads in group 446 static int nthreads(oop java_thread_group); 447 // threads 448 static objArrayOop threads(oop java_thread_group); 449 // Number of threads in group 450 static int ngroups(oop java_thread_group); 451 // groups 452 static objArrayOop groups(oop java_thread_group); 453 // maxPriority in group 454 static ThreadPriority maxPriority(oop java_thread_group); 455 // Destroyed 456 static bool is_destroyed(oop java_thread_group); 457 // Daemon 458 static bool is_daemon(oop java_thread_group); 459 // vmAllowSuspension 460 static bool is_vmAllowSuspension(oop java_thread_group); 461 // Debugging 462 friend class JavaClasses; 463 }; 464 465 466 467 // Interface to java.lang.Throwable objects 468 469 class java_lang_Throwable: AllStatic { 470 friend class BacktraceBuilder; 471 472 private: 473 // Offsets 474 enum { 475 hc_backtrace_offset = 0, 476 hc_detailMessage_offset = 1, 477 hc_cause_offset = 2, // New since 1.4 478 hc_stackTrace_offset = 3 // New since 1.4 479 }; 480 enum { 481 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7 482 }; 483 // Trace constants 484 enum { 485 trace_methods_offset = 0, 486 trace_bcis_offset = 1, 487 trace_mirrors_offset = 2, 488 trace_cprefs_offset = 3, 489 trace_next_offset = 4, 490 trace_size = 5, 491 trace_chunk_size = 32 492 }; 493 494 static int backtrace_offset; 495 static int detailMessage_offset; 496 static int cause_offset; 497 static int stackTrace_offset; 498 static int static_unassigned_stacktrace_offset; 499 500 // Printing 501 static char* print_stack_element_to_buffer(Handle mirror, int method, int version, int bci, int cpref); 502 // StackTrace (programmatic access, new since 1.4) 503 static void clear_stacktrace(oop throwable); 504 // No stack trace available 505 static const char* no_stack_trace_message(); 506 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) 507 static void set_stacktrace(oop throwable, oop st_element_array); 508 static oop unassigned_stacktrace(); 509 510 public: 511 // Backtrace 512 static oop backtrace(oop throwable); 513 static void set_backtrace(oop throwable, oop value); 514 // Needed by JVMTI to filter out this internal field. 515 static int get_backtrace_offset() { return backtrace_offset;} 516 static int get_detailMessage_offset() { return detailMessage_offset;} 517 // Message 518 static oop message(oop throwable); 519 static oop message(Handle throwable); 520 static void set_message(oop throwable, oop value); 521 static Symbol* detail_message(oop throwable); 522 static void print_stack_element(outputStream *st, Handle mirror, int method, 523 int version, int bci, int cpref); 524 static void print_stack_element(outputStream *st, methodHandle method, int bci); 525 static void print_stack_usage(Handle stream); 526 527 // Allocate space for backtrace (created but stack trace not filled in) 528 static void allocate_backtrace(Handle throwable, TRAPS); 529 // Fill in current stack trace for throwable with preallocated backtrace (no GC) 530 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); 531 // Fill in current stack trace, can cause GC 532 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS); 533 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle()); 534 // Programmatic access to stack trace 535 static oop get_stack_trace_element(oop throwable, int index, TRAPS); 536 static int get_stack_trace_depth(oop throwable, TRAPS); 537 // Printing 538 static void print(oop throwable, outputStream* st); 539 static void print(Handle throwable, outputStream* st); 540 static void print_stack_trace(oop throwable, outputStream* st); 541 // Debugging 542 friend class JavaClasses; 543 }; 544 545 546 // Interface to java.lang.reflect.AccessibleObject objects 547 548 class java_lang_reflect_AccessibleObject: AllStatic { 549 private: 550 // Note that to reduce dependencies on the JDK we compute these 551 // offsets at run-time. 552 static int override_offset; 553 554 static void compute_offsets(); 555 556 public: 557 // Accessors 558 static jboolean override(oop reflect); 559 static void set_override(oop reflect, jboolean value); 560 561 // Debugging 562 friend class JavaClasses; 563 }; 564 565 566 // Interface to java.lang.reflect.Method objects 567 568 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { 569 private: 570 // Note that to reduce dependencies on the JDK we compute these 571 // offsets at run-time. 572 static int clazz_offset; 573 static int name_offset; 574 static int returnType_offset; 575 static int parameterTypes_offset; 576 static int exceptionTypes_offset; 577 static int slot_offset; 578 static int modifiers_offset; 579 static int signature_offset; 580 static int annotations_offset; 581 static int parameter_annotations_offset; 582 static int annotation_default_offset; 583 static int type_annotations_offset; 584 585 static void compute_offsets(); 586 587 public: 588 // Allocation 589 static Handle create(TRAPS); 590 591 // Accessors 592 static oop clazz(oop reflect); 593 static void set_clazz(oop reflect, oop value); 594 595 static oop name(oop method); 596 static void set_name(oop method, oop value); 597 598 static oop return_type(oop method); 599 static void set_return_type(oop method, oop value); 600 601 static oop parameter_types(oop method); 602 static void set_parameter_types(oop method, oop value); 603 604 static oop exception_types(oop method); 605 static void set_exception_types(oop method, oop value); 606 607 static int slot(oop reflect); 608 static void set_slot(oop reflect, int value); 609 610 static int modifiers(oop method); 611 static void set_modifiers(oop method, int value); 612 613 static bool has_signature_field(); 614 static oop signature(oop method); 615 static void set_signature(oop method, oop value); 616 617 static bool has_annotations_field(); 618 static oop annotations(oop method); 619 static void set_annotations(oop method, oop value); 620 621 static bool has_parameter_annotations_field(); 622 static oop parameter_annotations(oop method); 623 static void set_parameter_annotations(oop method, oop value); 624 625 static bool has_annotation_default_field(); 626 static oop annotation_default(oop method); 627 static void set_annotation_default(oop method, oop value); 628 629 static bool has_type_annotations_field(); 630 static oop type_annotations(oop method); 631 static void set_type_annotations(oop method, oop value); 632 633 // Debugging 634 friend class JavaClasses; 635 }; 636 637 638 // Interface to java.lang.reflect.Constructor objects 639 640 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { 641 private: 642 // Note that to reduce dependencies on the JDK we compute these 643 // offsets at run-time. 644 static int clazz_offset; 645 static int parameterTypes_offset; 646 static int exceptionTypes_offset; 647 static int slot_offset; 648 static int modifiers_offset; 649 static int signature_offset; 650 static int annotations_offset; 651 static int parameter_annotations_offset; 652 static int type_annotations_offset; 653 654 static void compute_offsets(); 655 656 public: 657 // Allocation 658 static Handle create(TRAPS); 659 660 // Accessors 661 static oop clazz(oop reflect); 662 static void set_clazz(oop reflect, oop value); 663 664 static oop parameter_types(oop constructor); 665 static void set_parameter_types(oop constructor, oop value); 666 667 static oop exception_types(oop constructor); 668 static void set_exception_types(oop constructor, oop value); 669 670 static int slot(oop reflect); 671 static void set_slot(oop reflect, int value); 672 673 static int modifiers(oop constructor); 674 static void set_modifiers(oop constructor, int value); 675 676 static bool has_signature_field(); 677 static oop signature(oop constructor); 678 static void set_signature(oop constructor, oop value); 679 680 static bool has_annotations_field(); 681 static oop annotations(oop constructor); 682 static void set_annotations(oop constructor, oop value); 683 684 static bool has_parameter_annotations_field(); 685 static oop parameter_annotations(oop method); 686 static void set_parameter_annotations(oop method, oop value); 687 688 static bool has_type_annotations_field(); 689 static oop type_annotations(oop constructor); 690 static void set_type_annotations(oop constructor, oop value); 691 692 // Debugging 693 friend class JavaClasses; 694 }; 695 696 697 // Interface to java.lang.reflect.Field objects 698 699 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { 700 private: 701 // Note that to reduce dependencies on the JDK we compute these 702 // offsets at run-time. 703 static int clazz_offset; 704 static int name_offset; 705 static int type_offset; 706 static int slot_offset; 707 static int modifiers_offset; 708 static int signature_offset; 709 static int annotations_offset; 710 static int type_annotations_offset; 711 712 static void compute_offsets(); 713 714 public: 715 // Allocation 716 static Handle create(TRAPS); 717 718 // Accessors 719 static oop clazz(oop reflect); 720 static void set_clazz(oop reflect, oop value); 721 722 static oop name(oop field); 723 static void set_name(oop field, oop value); 724 725 static oop type(oop field); 726 static void set_type(oop field, oop value); 727 728 static int slot(oop reflect); 729 static void set_slot(oop reflect, int value); 730 731 static int modifiers(oop field); 732 static void set_modifiers(oop field, int value); 733 734 static bool has_signature_field(); 735 static oop signature(oop constructor); 736 static void set_signature(oop constructor, oop value); 737 738 static bool has_annotations_field(); 739 static oop annotations(oop constructor); 740 static void set_annotations(oop constructor, oop value); 741 742 static bool has_parameter_annotations_field(); 743 static oop parameter_annotations(oop method); 744 static void set_parameter_annotations(oop method, oop value); 745 746 static bool has_annotation_default_field(); 747 static oop annotation_default(oop method); 748 static void set_annotation_default(oop method, oop value); 749 750 static bool has_type_annotations_field(); 751 static oop type_annotations(oop field); 752 static void set_type_annotations(oop field, oop value); 753 754 // Debugging 755 friend class JavaClasses; 756 }; 757 758 class java_lang_reflect_Parameter { 759 private: 760 // Note that to reduce dependencies on the JDK we compute these 761 // offsets at run-time. 762 static int name_offset; 763 static int modifiers_offset; 764 static int index_offset; 765 static int executable_offset; 766 767 static void compute_offsets(); 768 769 public: 770 // Allocation 771 static Handle create(TRAPS); 772 773 // Accessors 774 static oop name(oop field); 775 static void set_name(oop field, oop value); 776 777 static int index(oop reflect); 778 static void set_index(oop reflect, int value); 779 780 static int modifiers(oop reflect); 781 static void set_modifiers(oop reflect, int value); 782 783 static oop executable(oop constructor); 784 static void set_executable(oop constructor, oop value); 785 786 friend class JavaClasses; 787 }; 788 789 // Interface to sun.reflect.ConstantPool objects 790 class sun_reflect_ConstantPool { 791 private: 792 // Note that to reduce dependencies on the JDK we compute these 793 // offsets at run-time. 794 static int _oop_offset; 795 796 static void compute_offsets(); 797 798 public: 799 // Allocation 800 static Handle create(TRAPS); 801 802 // Accessors 803 static void set_cp(oop reflect, ConstantPool* value); 804 static int oop_offset() { 805 return _oop_offset; 806 } 807 808 static ConstantPool* get_cp(oop reflect); 809 810 // Debugging 811 friend class JavaClasses; 812 }; 813 814 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects 815 class sun_reflect_UnsafeStaticFieldAccessorImpl { 816 private: 817 static int _base_offset; 818 static void compute_offsets(); 819 820 public: 821 static int base_offset() { 822 return _base_offset; 823 } 824 825 // Debugging 826 friend class JavaClasses; 827 }; 828 829 // Interface to java.lang primitive type boxing objects: 830 // - java.lang.Boolean 831 // - java.lang.Character 832 // - java.lang.Float 833 // - java.lang.Double 834 // - java.lang.Byte 835 // - java.lang.Short 836 // - java.lang.Integer 837 // - java.lang.Long 838 839 // This could be separated out into 8 individual classes. 840 841 class java_lang_boxing_object: AllStatic { 842 private: 843 enum { 844 hc_value_offset = 0 845 }; 846 static int value_offset; 847 static int long_value_offset; 848 849 static oop initialize_and_allocate(BasicType type, TRAPS); 850 public: 851 // Allocation. Returns a boxed value, or NULL for invalid type. 852 static oop create(BasicType type, jvalue* value, TRAPS); 853 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. 854 static BasicType get_value(oop box, jvalue* value); 855 static BasicType set_value(oop box, jvalue* value); 856 static BasicType basic_type(oop box); 857 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } 858 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } 859 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } 860 static void print(BasicType type, jvalue* value, outputStream* st); 861 862 static int value_offset_in_bytes(BasicType type) { 863 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : 864 value_offset; 865 } 866 867 // Debugging 868 friend class JavaClasses; 869 }; 870 871 872 873 // Interface to java.lang.ref.Reference objects 874 875 class java_lang_ref_Reference: AllStatic { 876 public: 877 enum { 878 hc_referent_offset = 0, 879 hc_queue_offset = 1, 880 hc_next_offset = 2, 881 hc_discovered_offset = 3 // Is not last, see SoftRefs. 882 }; 883 enum { 884 hc_static_lock_offset = 0, 885 hc_static_pending_offset = 1 886 }; 887 888 static int referent_offset; 889 static int queue_offset; 890 static int next_offset; 891 static int discovered_offset; 892 static int static_lock_offset; 893 static int static_pending_offset; 894 static int number_of_fake_oop_fields; 895 896 // Accessors 897 static oop referent(oop ref) { 898 return ref->obj_field(referent_offset); 899 } 900 static void set_referent(oop ref, oop value) { 901 ref->obj_field_put(referent_offset, value); 902 } 903 static void set_referent_raw(oop ref, oop value) { 904 ref->obj_field_put_raw(referent_offset, value); 905 } 906 static HeapWord* referent_addr(oop ref) { 907 return ref->obj_field_addr<HeapWord>(referent_offset); 908 } 909 static oop next(oop ref) { 910 return ref->obj_field(next_offset); 911 } 912 static void set_next(oop ref, oop value) { 913 ref->obj_field_put(next_offset, value); 914 } 915 static void set_next_raw(oop ref, oop value) { 916 ref->obj_field_put_raw(next_offset, value); 917 } 918 static HeapWord* next_addr(oop ref) { 919 return ref->obj_field_addr<HeapWord>(next_offset); 920 } 921 static oop discovered(oop ref) { 922 return ref->obj_field(discovered_offset); 923 } 924 static void set_discovered(oop ref, oop value) { 925 ref->obj_field_put(discovered_offset, value); 926 } 927 static void set_discovered_raw(oop ref, oop value) { 928 ref->obj_field_put_raw(discovered_offset, value); 929 } 930 static HeapWord* discovered_addr(oop ref) { 931 return ref->obj_field_addr<HeapWord>(discovered_offset); 932 } 933 // Accessors for statics 934 static oop pending_list_lock(); 935 static oop pending_list(); 936 937 static HeapWord* pending_list_lock_addr(); 938 static HeapWord* pending_list_addr(); 939 }; 940 941 942 // Interface to java.lang.ref.SoftReference objects 943 944 class java_lang_ref_SoftReference: public java_lang_ref_Reference { 945 public: 946 enum { 947 // The timestamp is a long field and may need to be adjusted for alignment. 948 hc_timestamp_offset = hc_discovered_offset + 1 949 }; 950 enum { 951 hc_static_clock_offset = 0 952 }; 953 954 static int timestamp_offset; 955 static int static_clock_offset; 956 957 // Accessors 958 static jlong timestamp(oop ref); 959 960 // Accessors for statics 961 static jlong clock(); 962 static void set_clock(jlong value); 963 }; 964 965 966 // Interface to java.lang.invoke.MethodHandle objects 967 968 class MethodHandleEntry; 969 970 class java_lang_invoke_MethodHandle: AllStatic { 971 friend class JavaClasses; 972 973 private: 974 static int _type_offset; // the MethodType of this MH 975 static int _form_offset; // the LambdaForm of this MH 976 977 static void compute_offsets(); 978 979 public: 980 // Accessors 981 static oop type(oop mh); 982 static void set_type(oop mh, oop mtype); 983 984 static oop form(oop mh); 985 static void set_form(oop mh, oop lform); 986 987 // Testers 988 static bool is_subclass(Klass* klass) { 989 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass()); 990 } 991 static bool is_instance(oop obj); 992 993 // Accessors for code generation: 994 static int type_offset_in_bytes() { return _type_offset; } 995 static int form_offset_in_bytes() { return _form_offset; } 996 }; 997 998 // Interface to java.lang.invoke.DirectMethodHandle objects 999 1000 class java_lang_invoke_DirectMethodHandle: AllStatic { 1001 friend class JavaClasses; 1002 1003 private: 1004 static int _member_offset; // the MemberName of this DMH 1005 1006 static void compute_offsets(); 1007 1008 public: 1009 // Accessors 1010 static oop member(oop mh); 1011 1012 // Testers 1013 static bool is_subclass(Klass* klass) { 1014 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass()); 1015 } 1016 static bool is_instance(oop obj); 1017 1018 // Accessors for code generation: 1019 static int member_offset_in_bytes() { return _member_offset; } 1020 }; 1021 1022 // Interface to java.lang.invoke.LambdaForm objects 1023 // (These are a private interface for managing adapter code generation.) 1024 1025 class java_lang_invoke_LambdaForm: AllStatic { 1026 friend class JavaClasses; 1027 1028 private: 1029 static int _vmentry_offset; // type is MemberName 1030 1031 static void compute_offsets(); 1032 1033 public: 1034 // Accessors 1035 static oop vmentry(oop lform); 1036 static void set_vmentry(oop lform, oop invoker); 1037 1038 // Testers 1039 static bool is_subclass(Klass* klass) { 1040 return SystemDictionary::LambdaForm_klass() != NULL && 1041 klass->is_subclass_of(SystemDictionary::LambdaForm_klass()); 1042 } 1043 static bool is_instance(oop obj); 1044 1045 // Accessors for code generation: 1046 static int vmentry_offset_in_bytes() { return _vmentry_offset; } 1047 }; 1048 1049 1050 // Interface to java.lang.invoke.MemberName objects 1051 // (These are a private interface for Java code to query the class hierarchy.) 1052 1053 #define MEMBERNAME_INJECTED_FIELDS(macro) \ 1054 macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \ 1055 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) \ 1056 macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false) 1057 1058 class java_lang_invoke_MemberName: AllStatic { 1059 friend class JavaClasses; 1060 1061 private: 1062 // From java.lang.invoke.MemberName: 1063 // private Class<?> clazz; // class in which the method is defined 1064 // private String name; // may be null if not yet materialized 1065 // private Object type; // may be null if not yet materialized 1066 // private int flags; // modifier bits; see reflect.Modifier 1067 // private intptr vmtarget; // VM-specific target value 1068 // private intptr_t vmindex; // member index within class or interface 1069 static int _clazz_offset; 1070 static int _name_offset; 1071 static int _type_offset; 1072 static int _flags_offset; 1073 static int _vmtarget_offset; 1074 static int _vmloader_offset; 1075 static int _vmindex_offset; 1076 1077 static void compute_offsets(); 1078 1079 public: 1080 // Accessors 1081 static oop clazz(oop mname); 1082 static void set_clazz(oop mname, oop clazz); 1083 1084 static oop type(oop mname); 1085 static void set_type(oop mname, oop type); 1086 1087 static oop name(oop mname); 1088 static void set_name(oop mname, oop name); 1089 1090 static int flags(oop mname); 1091 static void set_flags(oop mname, int flags); 1092 1093 static Metadata* vmtarget(oop mname); 1094 static void set_vmtarget(oop mname, Metadata* target); 1095 1096 static intptr_t vmindex(oop mname); 1097 static void set_vmindex(oop mname, intptr_t index); 1098 1099 // Testers 1100 static bool is_subclass(Klass* klass) { 1101 return klass->is_subclass_of(SystemDictionary::MemberName_klass()); 1102 } 1103 static bool is_instance(oop obj); 1104 1105 static bool is_method(oop obj); 1106 1107 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): 1108 enum { 1109 MN_IS_METHOD = 0x00010000, // method (not constructor) 1110 MN_IS_CONSTRUCTOR = 0x00020000, // constructor 1111 MN_IS_FIELD = 0x00040000, // field 1112 MN_IS_TYPE = 0x00080000, // nested type 1113 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected 1114 MN_REFERENCE_KIND_SHIFT = 24, // refKind 1115 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, 1116 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers: 1117 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes 1118 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces 1119 }; 1120 1121 // Accessors for code generation: 1122 static int clazz_offset_in_bytes() { return _clazz_offset; } 1123 static int type_offset_in_bytes() { return _type_offset; } 1124 static int name_offset_in_bytes() { return _name_offset; } 1125 static int flags_offset_in_bytes() { return _flags_offset; } 1126 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } 1127 static int vmindex_offset_in_bytes() { return _vmindex_offset; } 1128 }; 1129 1130 1131 // Interface to java.lang.invoke.MethodType objects 1132 1133 class java_lang_invoke_MethodType: AllStatic { 1134 friend class JavaClasses; 1135 1136 private: 1137 static int _rtype_offset; 1138 static int _ptypes_offset; 1139 1140 static void compute_offsets(); 1141 1142 public: 1143 // Accessors 1144 static oop rtype(oop mt); 1145 static objArrayOop ptypes(oop mt); 1146 1147 static oop ptype(oop mt, int index); 1148 static int ptype_count(oop mt); 1149 1150 static int ptype_slot_count(oop mt); // extra counts for long/double 1151 static int rtype_slot_count(oop mt); // extra counts for long/double 1152 1153 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS); 1154 static void print_signature(oop mt, outputStream* st); 1155 1156 static bool is_instance(oop obj); 1157 1158 static bool equals(oop mt1, oop mt2); 1159 1160 // Accessors for code generation: 1161 static int rtype_offset_in_bytes() { return _rtype_offset; } 1162 static int ptypes_offset_in_bytes() { return _ptypes_offset; } 1163 }; 1164 1165 1166 // Interface to java.lang.invoke.CallSite objects 1167 1168 class java_lang_invoke_CallSite: AllStatic { 1169 friend class JavaClasses; 1170 1171 private: 1172 static int _target_offset; 1173 1174 static void compute_offsets(); 1175 1176 public: 1177 // Accessors 1178 static oop target( oop site); 1179 static void set_target( oop site, oop target); 1180 1181 static volatile oop target_volatile(oop site); 1182 static void set_target_volatile(oop site, oop target); 1183 1184 // Testers 1185 static bool is_subclass(Klass* klass) { 1186 return klass->is_subclass_of(SystemDictionary::CallSite_klass()); 1187 } 1188 static bool is_instance(oop obj); 1189 1190 // Accessors for code generation: 1191 static int target_offset_in_bytes() { return _target_offset; } 1192 }; 1193 1194 1195 // Interface to java.security.AccessControlContext objects 1196 1197 class java_security_AccessControlContext: AllStatic { 1198 private: 1199 // Note that for this class the layout changed between JDK1.2 and JDK1.3, 1200 // so we compute the offsets at startup rather than hard-wiring them. 1201 static int _context_offset; 1202 static int _privilegedContext_offset; 1203 static int _isPrivileged_offset; 1204 static int _isAuthorized_offset; 1205 1206 static void compute_offsets(); 1207 public: 1208 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); 1209 1210 static bool is_authorized(Handle context); 1211 1212 // Debugging/initialization 1213 friend class JavaClasses; 1214 }; 1215 1216 1217 // Interface to java.lang.ClassLoader objects 1218 1219 #define CLASSLOADER_INJECTED_FIELDS(macro) \ 1220 macro(java_lang_ClassLoader, loader_data, intptr_signature, false) 1221 1222 class java_lang_ClassLoader : AllStatic { 1223 private: 1224 // The fake offsets are added by the class loader when java.lang.Class is loaded 1225 enum { 1226 hc_parent_offset = 0 1227 }; 1228 static int _loader_data_offset; 1229 static bool offsets_computed; 1230 static int parent_offset; 1231 static int parallelCapable_offset; 1232 1233 public: 1234 static void compute_offsets(); 1235 1236 static ClassLoaderData** loader_data_addr(oop loader); 1237 static ClassLoaderData* loader_data(oop loader); 1238 1239 static oop parent(oop loader); 1240 static bool isAncestor(oop loader, oop cl); 1241 1242 // Support for parallelCapable field 1243 static bool parallelCapable(oop the_class_mirror); 1244 1245 static bool is_trusted_loader(oop loader); 1246 1247 // Fix for 4474172 1248 static oop non_reflection_class_loader(oop loader); 1249 1250 // Testers 1251 static bool is_subclass(Klass* klass) { 1252 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass()); 1253 } 1254 static bool is_instance(oop obj); 1255 1256 // Debugging 1257 friend class JavaClasses; 1258 friend class ClassFileParser; // access to number_of_fake_fields 1259 }; 1260 1261 1262 // Interface to java.lang.System objects 1263 1264 class java_lang_System : AllStatic { 1265 private: 1266 enum { 1267 hc_static_in_offset = 0, 1268 hc_static_out_offset = 1, 1269 hc_static_err_offset = 2, 1270 hc_static_security_offset = 3 1271 }; 1272 1273 static int static_in_offset; 1274 static int static_out_offset; 1275 static int static_err_offset; 1276 static int static_security_offset; 1277 1278 public: 1279 static int in_offset_in_bytes(); 1280 static int out_offset_in_bytes(); 1281 static int err_offset_in_bytes(); 1282 1283 static bool has_security_manager(); 1284 1285 // Debugging 1286 friend class JavaClasses; 1287 }; 1288 1289 1290 // Interface to java.lang.StackTraceElement objects 1291 1292 class java_lang_StackTraceElement: AllStatic { 1293 private: 1294 enum { 1295 hc_declaringClass_offset = 0, 1296 hc_methodName_offset = 1, 1297 hc_fileName_offset = 2, 1298 hc_lineNumber_offset = 3 1299 }; 1300 1301 static int declaringClass_offset; 1302 static int methodName_offset; 1303 static int fileName_offset; 1304 static int lineNumber_offset; 1305 1306 public: 1307 // Setters 1308 static void set_declaringClass(oop element, oop value); 1309 static void set_methodName(oop element, oop value); 1310 static void set_fileName(oop element, oop value); 1311 static void set_lineNumber(oop element, int value); 1312 1313 // Create an instance of StackTraceElement 1314 static oop create(Handle mirror, int method, int version, int bci, int cpref, TRAPS); 1315 static oop create(methodHandle method, int bci, TRAPS); 1316 1317 // Debugging 1318 friend class JavaClasses; 1319 }; 1320 1321 1322 // Interface to java.lang.AssertionStatusDirectives objects 1323 1324 class java_lang_AssertionStatusDirectives: AllStatic { 1325 private: 1326 enum { 1327 hc_classes_offset, 1328 hc_classEnabled_offset, 1329 hc_packages_offset, 1330 hc_packageEnabled_offset, 1331 hc_deflt_offset 1332 }; 1333 1334 static int classes_offset; 1335 static int classEnabled_offset; 1336 static int packages_offset; 1337 static int packageEnabled_offset; 1338 static int deflt_offset; 1339 1340 public: 1341 // Setters 1342 static void set_classes(oop obj, oop val); 1343 static void set_classEnabled(oop obj, oop val); 1344 static void set_packages(oop obj, oop val); 1345 static void set_packageEnabled(oop obj, oop val); 1346 static void set_deflt(oop obj, bool val); 1347 // Debugging 1348 friend class JavaClasses; 1349 }; 1350 1351 1352 class java_nio_Buffer: AllStatic { 1353 private: 1354 static int _limit_offset; 1355 1356 public: 1357 static int limit_offset(); 1358 static void compute_offsets(); 1359 }; 1360 1361 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { 1362 private: 1363 static int _owner_offset; 1364 public: 1365 static void initialize(TRAPS); 1366 static oop get_owner_threadObj(oop obj); 1367 }; 1368 1369 // Use to declare fields that need to be injected into Java classes 1370 // for the JVM to use. The name_index and signature_index are 1371 // declared in vmSymbols. The may_be_java flag is used to declare 1372 // fields that might already exist in Java but should be injected if 1373 // they don't. Otherwise the field is unconditionally injected and 1374 // the JVM uses the injected one. This is to ensure that name 1375 // collisions don't occur. In general may_be_java should be false 1376 // unless there's a good reason. 1377 1378 class InjectedField { 1379 public: 1380 const SystemDictionary::WKID klass_id; 1381 const vmSymbols::SID name_index; 1382 const vmSymbols::SID signature_index; 1383 const bool may_be_java; 1384 1385 1386 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); } 1387 Symbol* name() const { return lookup_symbol(name_index); } 1388 Symbol* signature() const { return lookup_symbol(signature_index); } 1389 1390 int compute_offset(); 1391 1392 // Find the Symbol for this index 1393 static Symbol* lookup_symbol(int symbol_index) { 1394 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index); 1395 } 1396 }; 1397 1398 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \ 1399 klass##_##name##_enum, 1400 1401 #define ALL_INJECTED_FIELDS(macro) \ 1402 CLASS_INJECTED_FIELDS(macro) \ 1403 CLASSLOADER_INJECTED_FIELDS(macro) \ 1404 MEMBERNAME_INJECTED_FIELDS(macro) 1405 1406 // Interface to hard-coded offset checking 1407 1408 class JavaClasses : AllStatic { 1409 private: 1410 1411 static InjectedField _injected_fields[]; 1412 1413 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; 1414 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; 1415 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; 1416 1417 public: 1418 enum InjectedFieldID { 1419 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM) 1420 MAX_enum 1421 }; 1422 1423 static int compute_injected_offset(InjectedFieldID id); 1424 1425 static void compute_hard_coded_offsets(); 1426 static void compute_offsets(); 1427 static void check_offsets() PRODUCT_RETURN; 1428 1429 static InjectedField* get_injected(Symbol* class_name, int* field_count); 1430 }; 1431 1432 #undef DECLARE_INJECTED_FIELD_ENUM 1433 1434 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP