1 /* 2 * Copyright (c) 1997, 2014, 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_next_offset = 3, 489 trace_size = 4, 490 trace_chunk_size = 32 491 }; 492 493 static int backtrace_offset; 494 static int detailMessage_offset; 495 static int cause_offset; 496 static int stackTrace_offset; 497 static int static_unassigned_stacktrace_offset; 498 499 // Printing 500 static char* print_stack_element_to_buffer(Handle mirror, int method, int version, int bci); 501 // StackTrace (programmatic access, new since 1.4) 502 static void clear_stacktrace(oop throwable); 503 // No stack trace available 504 static const char* no_stack_trace_message(); 505 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) 506 static void set_stacktrace(oop throwable, oop st_element_array); 507 static oop unassigned_stacktrace(); 508 509 public: 510 // Backtrace 511 static oop backtrace(oop throwable); 512 static void set_backtrace(oop throwable, oop value); 513 // Needed by JVMTI to filter out this internal field. 514 static int get_backtrace_offset() { return backtrace_offset;} 515 static int get_detailMessage_offset() { return detailMessage_offset;} 516 // Message 517 static oop message(oop throwable); 518 static oop message(Handle throwable); 519 static void set_message(oop throwable, oop value); 520 static Symbol* detail_message(oop throwable); 521 static void print_stack_element(outputStream *st, Handle mirror, int method, 522 int version, int bci); 523 static void print_stack_element(outputStream *st, methodHandle method, int bci); 524 static void print_stack_usage(Handle stream); 525 526 // Allocate space for backtrace (created but stack trace not filled in) 527 static void allocate_backtrace(Handle throwable, TRAPS); 528 // Fill in current stack trace for throwable with preallocated backtrace (no GC) 529 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); 530 // Fill in current stack trace, can cause GC 531 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS); 532 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle()); 533 // Programmatic access to stack trace 534 static oop get_stack_trace_element(oop throwable, int index, TRAPS); 535 static int get_stack_trace_depth(oop throwable, TRAPS); 536 // Printing 537 static void print(oop throwable, outputStream* st); 538 static void print(Handle throwable, outputStream* st); 539 static void print_stack_trace(oop throwable, outputStream* st); 540 // Debugging 541 friend class JavaClasses; 542 }; 543 544 545 // Interface to java.lang.reflect.AccessibleObject objects 546 547 class java_lang_reflect_AccessibleObject: AllStatic { 548 private: 549 // Note that to reduce dependencies on the JDK we compute these 550 // offsets at run-time. 551 static int override_offset; 552 553 static void compute_offsets(); 554 555 public: 556 // Accessors 557 static jboolean override(oop reflect); 558 static void set_override(oop reflect, jboolean value); 559 560 // Debugging 561 friend class JavaClasses; 562 }; 563 564 565 // Interface to java.lang.reflect.Method objects 566 567 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { 568 private: 569 // Note that to reduce dependencies on the JDK we compute these 570 // offsets at run-time. 571 static int clazz_offset; 572 static int name_offset; 573 static int returnType_offset; 574 static int parameterTypes_offset; 575 static int exceptionTypes_offset; 576 static int slot_offset; 577 static int modifiers_offset; 578 static int signature_offset; 579 static int annotations_offset; 580 static int parameter_annotations_offset; 581 static int annotation_default_offset; 582 static int type_annotations_offset; 583 584 static void compute_offsets(); 585 586 public: 587 // Allocation 588 static Handle create(TRAPS); 589 590 // Accessors 591 static oop clazz(oop reflect); 592 static void set_clazz(oop reflect, oop value); 593 594 static oop name(oop method); 595 static void set_name(oop method, oop value); 596 597 static oop return_type(oop method); 598 static void set_return_type(oop method, oop value); 599 600 static oop parameter_types(oop method); 601 static void set_parameter_types(oop method, oop value); 602 603 static oop exception_types(oop method); 604 static void set_exception_types(oop method, oop value); 605 606 static int slot(oop reflect); 607 static void set_slot(oop reflect, int value); 608 609 static int modifiers(oop method); 610 static void set_modifiers(oop method, int value); 611 612 static bool has_signature_field(); 613 static oop signature(oop method); 614 static void set_signature(oop method, oop value); 615 616 static bool has_annotations_field(); 617 static oop annotations(oop method); 618 static void set_annotations(oop method, oop value); 619 620 static bool has_parameter_annotations_field(); 621 static oop parameter_annotations(oop method); 622 static void set_parameter_annotations(oop method, oop value); 623 624 static bool has_annotation_default_field(); 625 static oop annotation_default(oop method); 626 static void set_annotation_default(oop method, oop value); 627 628 static bool has_type_annotations_field(); 629 static oop type_annotations(oop method); 630 static void set_type_annotations(oop method, oop value); 631 632 // Debugging 633 friend class JavaClasses; 634 }; 635 636 637 // Interface to java.lang.reflect.Constructor objects 638 639 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { 640 private: 641 // Note that to reduce dependencies on the JDK we compute these 642 // offsets at run-time. 643 static int clazz_offset; 644 static int parameterTypes_offset; 645 static int exceptionTypes_offset; 646 static int slot_offset; 647 static int modifiers_offset; 648 static int signature_offset; 649 static int annotations_offset; 650 static int parameter_annotations_offset; 651 static int type_annotations_offset; 652 653 static void compute_offsets(); 654 655 public: 656 // Allocation 657 static Handle create(TRAPS); 658 659 // Accessors 660 static oop clazz(oop reflect); 661 static void set_clazz(oop reflect, oop value); 662 663 static oop parameter_types(oop constructor); 664 static void set_parameter_types(oop constructor, oop value); 665 666 static oop exception_types(oop constructor); 667 static void set_exception_types(oop constructor, oop value); 668 669 static int slot(oop reflect); 670 static void set_slot(oop reflect, int value); 671 672 static int modifiers(oop constructor); 673 static void set_modifiers(oop constructor, int value); 674 675 static bool has_signature_field(); 676 static oop signature(oop constructor); 677 static void set_signature(oop constructor, oop value); 678 679 static bool has_annotations_field(); 680 static oop annotations(oop constructor); 681 static void set_annotations(oop constructor, oop value); 682 683 static bool has_parameter_annotations_field(); 684 static oop parameter_annotations(oop method); 685 static void set_parameter_annotations(oop method, oop value); 686 687 static bool has_type_annotations_field(); 688 static oop type_annotations(oop constructor); 689 static void set_type_annotations(oop constructor, oop value); 690 691 // Debugging 692 friend class JavaClasses; 693 }; 694 695 696 // Interface to java.lang.reflect.Field objects 697 698 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { 699 private: 700 // Note that to reduce dependencies on the JDK we compute these 701 // offsets at run-time. 702 static int clazz_offset; 703 static int name_offset; 704 static int type_offset; 705 static int slot_offset; 706 static int modifiers_offset; 707 static int signature_offset; 708 static int annotations_offset; 709 static int type_annotations_offset; 710 711 static void compute_offsets(); 712 713 public: 714 // Allocation 715 static Handle create(TRAPS); 716 717 // Accessors 718 static oop clazz(oop reflect); 719 static void set_clazz(oop reflect, oop value); 720 721 static oop name(oop field); 722 static void set_name(oop field, oop value); 723 724 static oop type(oop field); 725 static void set_type(oop field, oop value); 726 727 static int slot(oop reflect); 728 static void set_slot(oop reflect, int value); 729 730 static int modifiers(oop field); 731 static void set_modifiers(oop field, int value); 732 733 static bool has_signature_field(); 734 static oop signature(oop constructor); 735 static void set_signature(oop constructor, oop value); 736 737 static bool has_annotations_field(); 738 static oop annotations(oop constructor); 739 static void set_annotations(oop constructor, oop value); 740 741 static bool has_parameter_annotations_field(); 742 static oop parameter_annotations(oop method); 743 static void set_parameter_annotations(oop method, oop value); 744 745 static bool has_annotation_default_field(); 746 static oop annotation_default(oop method); 747 static void set_annotation_default(oop method, oop value); 748 749 static bool has_type_annotations_field(); 750 static oop type_annotations(oop field); 751 static void set_type_annotations(oop field, oop value); 752 753 // Debugging 754 friend class JavaClasses; 755 }; 756 757 class java_lang_reflect_Parameter { 758 private: 759 // Note that to reduce dependencies on the JDK we compute these 760 // offsets at run-time. 761 static int name_offset; 762 static int modifiers_offset; 763 static int index_offset; 764 static int executable_offset; 765 766 static void compute_offsets(); 767 768 public: 769 // Allocation 770 static Handle create(TRAPS); 771 772 // Accessors 773 static oop name(oop field); 774 static void set_name(oop field, oop value); 775 776 static int index(oop reflect); 777 static void set_index(oop reflect, int value); 778 779 static int modifiers(oop reflect); 780 static void set_modifiers(oop reflect, int value); 781 782 static oop executable(oop constructor); 783 static void set_executable(oop constructor, oop value); 784 785 friend class JavaClasses; 786 }; 787 788 // Interface to sun.reflect.ConstantPool objects 789 class sun_reflect_ConstantPool { 790 private: 791 // Note that to reduce dependencies on the JDK we compute these 792 // offsets at run-time. 793 static int _oop_offset; 794 795 static void compute_offsets(); 796 797 public: 798 // Allocation 799 static Handle create(TRAPS); 800 801 // Accessors 802 static void set_cp(oop reflect, ConstantPool* value); 803 static int oop_offset() { 804 return _oop_offset; 805 } 806 807 static ConstantPool* get_cp(oop reflect); 808 809 // Debugging 810 friend class JavaClasses; 811 }; 812 813 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects 814 class sun_reflect_UnsafeStaticFieldAccessorImpl { 815 private: 816 static int _base_offset; 817 static void compute_offsets(); 818 819 public: 820 static int base_offset() { 821 return _base_offset; 822 } 823 824 // Debugging 825 friend class JavaClasses; 826 }; 827 828 // Interface to java.lang primitive type boxing objects: 829 // - java.lang.Boolean 830 // - java.lang.Character 831 // - java.lang.Float 832 // - java.lang.Double 833 // - java.lang.Byte 834 // - java.lang.Short 835 // - java.lang.Integer 836 // - java.lang.Long 837 838 // This could be separated out into 8 individual classes. 839 840 class java_lang_boxing_object: AllStatic { 841 private: 842 enum { 843 hc_value_offset = 0 844 }; 845 static int value_offset; 846 static int long_value_offset; 847 848 static oop initialize_and_allocate(BasicType type, TRAPS); 849 public: 850 // Allocation. Returns a boxed value, or NULL for invalid type. 851 static oop create(BasicType type, jvalue* value, TRAPS); 852 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. 853 static BasicType get_value(oop box, jvalue* value); 854 static BasicType set_value(oop box, jvalue* value); 855 static BasicType basic_type(oop box); 856 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } 857 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } 858 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } 859 static void print(BasicType type, jvalue* value, outputStream* st); 860 861 static int value_offset_in_bytes(BasicType type) { 862 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : 863 value_offset; 864 } 865 866 // Debugging 867 friend class JavaClasses; 868 }; 869 870 871 872 // Interface to java.lang.ref.Reference objects 873 874 class java_lang_ref_Reference: AllStatic { 875 public: 876 enum { 877 hc_referent_offset = 0, 878 hc_queue_offset = 1, 879 hc_next_offset = 2, 880 hc_discovered_offset = 3 // Is not last, see SoftRefs. 881 }; 882 enum { 883 hc_static_lock_offset = 0, 884 hc_static_pending_offset = 1 885 }; 886 887 static int referent_offset; 888 static int queue_offset; 889 static int next_offset; 890 static int discovered_offset; 891 static int static_lock_offset; 892 static int static_pending_offset; 893 static int number_of_fake_oop_fields; 894 895 // Accessors 896 static oop referent(oop ref) { 897 return ref->obj_field(referent_offset); 898 } 899 static void set_referent(oop ref, oop value) { 900 ref->obj_field_put(referent_offset, value); 901 } 902 static void set_referent_raw(oop ref, oop value) { 903 ref->obj_field_put_raw(referent_offset, value); 904 } 905 static HeapWord* referent_addr(oop ref) { 906 return ref->obj_field_addr<HeapWord>(referent_offset); 907 } 908 static oop next(oop ref) { 909 return ref->obj_field(next_offset); 910 } 911 static void set_next(oop ref, oop value) { 912 ref->obj_field_put(next_offset, value); 913 } 914 static void set_next_raw(oop ref, oop value) { 915 ref->obj_field_put_raw(next_offset, value); 916 } 917 static HeapWord* next_addr(oop ref) { 918 return ref->obj_field_addr<HeapWord>(next_offset); 919 } 920 static oop discovered(oop ref) { 921 return ref->obj_field(discovered_offset); 922 } 923 static void set_discovered(oop ref, oop value) { 924 ref->obj_field_put(discovered_offset, value); 925 } 926 static void set_discovered_raw(oop ref, oop value) { 927 ref->obj_field_put_raw(discovered_offset, value); 928 } 929 static HeapWord* discovered_addr(oop ref) { 930 return ref->obj_field_addr<HeapWord>(discovered_offset); 931 } 932 // Accessors for statics 933 static oop pending_list_lock(); 934 static oop pending_list(); 935 936 static HeapWord* pending_list_lock_addr(); 937 static HeapWord* pending_list_addr(); 938 }; 939 940 941 // Interface to java.lang.ref.SoftReference objects 942 943 class java_lang_ref_SoftReference: public java_lang_ref_Reference { 944 public: 945 enum { 946 // The timestamp is a long field and may need to be adjusted for alignment. 947 hc_timestamp_offset = hc_discovered_offset + 1 948 }; 949 enum { 950 hc_static_clock_offset = 0 951 }; 952 953 static int timestamp_offset; 954 static int static_clock_offset; 955 956 // Accessors 957 static jlong timestamp(oop ref); 958 959 // Accessors for statics 960 static jlong clock(); 961 static void set_clock(jlong value); 962 }; 963 964 965 // Interface to java.lang.invoke.MethodHandle objects 966 967 class MethodHandleEntry; 968 969 class java_lang_invoke_MethodHandle: AllStatic { 970 friend class JavaClasses; 971 972 private: 973 static int _type_offset; // the MethodType of this MH 974 static int _form_offset; // the LambdaForm of this MH 975 976 static void compute_offsets(); 977 978 public: 979 // Accessors 980 static oop type(oop mh); 981 static void set_type(oop mh, oop mtype); 982 983 static oop form(oop mh); 984 static void set_form(oop mh, oop lform); 985 986 // Testers 987 static bool is_subclass(Klass* klass) { 988 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass()); 989 } 990 static bool is_instance(oop obj); 991 992 // Accessors for code generation: 993 static int type_offset_in_bytes() { return _type_offset; } 994 static int form_offset_in_bytes() { return _form_offset; } 995 }; 996 997 // Interface to java.lang.invoke.DirectMethodHandle objects 998 999 class java_lang_invoke_DirectMethodHandle: AllStatic { 1000 friend class JavaClasses; 1001 1002 private: 1003 static int _member_offset; // the MemberName of this DMH 1004 1005 static void compute_offsets(); 1006 1007 public: 1008 // Accessors 1009 static oop member(oop mh); 1010 1011 // Testers 1012 static bool is_subclass(Klass* klass) { 1013 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass()); 1014 } 1015 static bool is_instance(oop obj); 1016 1017 // Accessors for code generation: 1018 static int member_offset_in_bytes() { return _member_offset; } 1019 }; 1020 1021 // Interface to java.lang.invoke.LambdaForm objects 1022 // (These are a private interface for managing adapter code generation.) 1023 1024 class java_lang_invoke_LambdaForm: AllStatic { 1025 friend class JavaClasses; 1026 1027 private: 1028 static int _vmentry_offset; // type is MemberName 1029 1030 static void compute_offsets(); 1031 1032 public: 1033 // Accessors 1034 static oop vmentry(oop lform); 1035 static void set_vmentry(oop lform, oop invoker); 1036 1037 // Testers 1038 static bool is_subclass(Klass* klass) { 1039 return SystemDictionary::LambdaForm_klass() != NULL && 1040 klass->is_subclass_of(SystemDictionary::LambdaForm_klass()); 1041 } 1042 static bool is_instance(oop obj); 1043 1044 // Accessors for code generation: 1045 static int vmentry_offset_in_bytes() { return _vmentry_offset; } 1046 }; 1047 1048 1049 // Interface to java.lang.invoke.MemberName objects 1050 // (These are a private interface for Java code to query the class hierarchy.) 1051 1052 #define MEMBERNAME_INJECTED_FIELDS(macro) \ 1053 macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \ 1054 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) \ 1055 macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false) 1056 1057 class java_lang_invoke_MemberName: AllStatic { 1058 friend class JavaClasses; 1059 1060 private: 1061 // From java.lang.invoke.MemberName: 1062 // private Class<?> clazz; // class in which the method is defined 1063 // private String name; // may be null if not yet materialized 1064 // private Object type; // may be null if not yet materialized 1065 // private int flags; // modifier bits; see reflect.Modifier 1066 // private intptr vmtarget; // VM-specific target value 1067 // private intptr_t vmindex; // member index within class or interface 1068 static int _clazz_offset; 1069 static int _name_offset; 1070 static int _type_offset; 1071 static int _flags_offset; 1072 static int _vmtarget_offset; 1073 static int _vmloader_offset; 1074 static int _vmindex_offset; 1075 1076 static void compute_offsets(); 1077 1078 public: 1079 // Accessors 1080 static oop clazz(oop mname); 1081 static void set_clazz(oop mname, oop clazz); 1082 1083 static oop type(oop mname); 1084 static void set_type(oop mname, oop type); 1085 1086 static oop name(oop mname); 1087 static void set_name(oop mname, oop name); 1088 1089 static int flags(oop mname); 1090 static void set_flags(oop mname, int flags); 1091 1092 static Metadata* vmtarget(oop mname); 1093 static void set_vmtarget(oop mname, Metadata* target); 1094 #if INCLUDE_JVMTI 1095 static void adjust_vmtarget(oop mname, Method* old_method, Method* new_method, 1096 bool* trace_name_printed); 1097 #endif // INCLUDE_JVMTI 1098 1099 static intptr_t vmindex(oop mname); 1100 static void set_vmindex(oop mname, intptr_t index); 1101 1102 // Testers 1103 static bool is_subclass(Klass* klass) { 1104 return klass->is_subclass_of(SystemDictionary::MemberName_klass()); 1105 } 1106 static bool is_instance(oop obj); 1107 1108 static bool is_method(oop obj); 1109 1110 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): 1111 enum { 1112 MN_IS_METHOD = 0x00010000, // method (not constructor) 1113 MN_IS_CONSTRUCTOR = 0x00020000, // constructor 1114 MN_IS_FIELD = 0x00040000, // field 1115 MN_IS_TYPE = 0x00080000, // nested type 1116 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected 1117 MN_REFERENCE_KIND_SHIFT = 24, // refKind 1118 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, 1119 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers: 1120 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes 1121 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces 1122 }; 1123 1124 // Accessors for code generation: 1125 static int clazz_offset_in_bytes() { return _clazz_offset; } 1126 static int type_offset_in_bytes() { return _type_offset; } 1127 static int name_offset_in_bytes() { return _name_offset; } 1128 static int flags_offset_in_bytes() { return _flags_offset; } 1129 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } 1130 static int vmindex_offset_in_bytes() { return _vmindex_offset; } 1131 }; 1132 1133 1134 // Interface to java.lang.invoke.MethodType objects 1135 1136 class java_lang_invoke_MethodType: AllStatic { 1137 friend class JavaClasses; 1138 1139 private: 1140 static int _rtype_offset; 1141 static int _ptypes_offset; 1142 1143 static void compute_offsets(); 1144 1145 public: 1146 // Accessors 1147 static oop rtype(oop mt); 1148 static objArrayOop ptypes(oop mt); 1149 1150 static oop ptype(oop mt, int index); 1151 static int ptype_count(oop mt); 1152 1153 static int ptype_slot_count(oop mt); // extra counts for long/double 1154 static int rtype_slot_count(oop mt); // extra counts for long/double 1155 1156 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS); 1157 static void print_signature(oop mt, outputStream* st); 1158 1159 static bool is_instance(oop obj); 1160 1161 static bool equals(oop mt1, oop mt2); 1162 1163 // Accessors for code generation: 1164 static int rtype_offset_in_bytes() { return _rtype_offset; } 1165 static int ptypes_offset_in_bytes() { return _ptypes_offset; } 1166 }; 1167 1168 1169 // Interface to java.lang.invoke.CallSite objects 1170 1171 class java_lang_invoke_CallSite: AllStatic { 1172 friend class JavaClasses; 1173 1174 private: 1175 static int _target_offset; 1176 1177 static void compute_offsets(); 1178 1179 public: 1180 // Accessors 1181 static oop target( oop site); 1182 static void set_target( oop site, oop target); 1183 1184 static volatile oop target_volatile(oop site); 1185 static void set_target_volatile(oop site, oop target); 1186 1187 // Testers 1188 static bool is_subclass(Klass* klass) { 1189 return klass->is_subclass_of(SystemDictionary::CallSite_klass()); 1190 } 1191 static bool is_instance(oop obj); 1192 1193 // Accessors for code generation: 1194 static int target_offset_in_bytes() { return _target_offset; } 1195 }; 1196 1197 1198 // Interface to java.security.AccessControlContext objects 1199 1200 class java_security_AccessControlContext: AllStatic { 1201 private: 1202 // Note that for this class the layout changed between JDK1.2 and JDK1.3, 1203 // so we compute the offsets at startup rather than hard-wiring them. 1204 static int _context_offset; 1205 static int _privilegedContext_offset; 1206 static int _isPrivileged_offset; 1207 static int _isAuthorized_offset; 1208 1209 static void compute_offsets(); 1210 public: 1211 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); 1212 1213 static bool is_authorized(Handle context); 1214 1215 // Debugging/initialization 1216 friend class JavaClasses; 1217 }; 1218 1219 1220 // Interface to java.lang.ClassLoader objects 1221 1222 #define CLASSLOADER_INJECTED_FIELDS(macro) \ 1223 macro(java_lang_ClassLoader, loader_data, intptr_signature, false) 1224 1225 class java_lang_ClassLoader : AllStatic { 1226 private: 1227 // The fake offsets are added by the class loader when java.lang.Class is loaded 1228 enum { 1229 hc_parent_offset = 0 1230 }; 1231 static int _loader_data_offset; 1232 static bool offsets_computed; 1233 static int parent_offset; 1234 static int parallelCapable_offset; 1235 1236 public: 1237 static void compute_offsets(); 1238 1239 static ClassLoaderData** loader_data_addr(oop loader); 1240 static ClassLoaderData* loader_data(oop loader); 1241 1242 static oop parent(oop loader); 1243 static bool isAncestor(oop loader, oop cl); 1244 1245 // Support for parallelCapable field 1246 static bool parallelCapable(oop the_class_mirror); 1247 1248 static bool is_trusted_loader(oop loader); 1249 1250 // Fix for 4474172 1251 static oop non_reflection_class_loader(oop loader); 1252 1253 // Testers 1254 static bool is_subclass(Klass* klass) { 1255 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass()); 1256 } 1257 static bool is_instance(oop obj); 1258 1259 // Debugging 1260 friend class JavaClasses; 1261 friend class ClassFileParser; // access to number_of_fake_fields 1262 }; 1263 1264 1265 // Interface to java.lang.System objects 1266 1267 class java_lang_System : AllStatic { 1268 private: 1269 enum { 1270 hc_static_in_offset = 0, 1271 hc_static_out_offset = 1, 1272 hc_static_err_offset = 2, 1273 hc_static_security_offset = 3 1274 }; 1275 1276 static int static_in_offset; 1277 static int static_out_offset; 1278 static int static_err_offset; 1279 static int static_security_offset; 1280 1281 public: 1282 static int in_offset_in_bytes(); 1283 static int out_offset_in_bytes(); 1284 static int err_offset_in_bytes(); 1285 1286 static bool has_security_manager(); 1287 1288 // Debugging 1289 friend class JavaClasses; 1290 }; 1291 1292 1293 // Interface to java.lang.StackTraceElement objects 1294 1295 class java_lang_StackTraceElement: AllStatic { 1296 private: 1297 enum { 1298 hc_declaringClass_offset = 0, 1299 hc_methodName_offset = 1, 1300 hc_fileName_offset = 2, 1301 hc_lineNumber_offset = 3 1302 }; 1303 1304 static int declaringClass_offset; 1305 static int methodName_offset; 1306 static int fileName_offset; 1307 static int lineNumber_offset; 1308 1309 public: 1310 // Setters 1311 static void set_declaringClass(oop element, oop value); 1312 static void set_methodName(oop element, oop value); 1313 static void set_fileName(oop element, oop value); 1314 static void set_lineNumber(oop element, int value); 1315 1316 // Create an instance of StackTraceElement 1317 static oop create(Handle mirror, int method, int version, int bci, TRAPS); 1318 static oop create(methodHandle method, int bci, TRAPS); 1319 1320 // Debugging 1321 friend class JavaClasses; 1322 }; 1323 1324 1325 // Interface to java.lang.AssertionStatusDirectives objects 1326 1327 class java_lang_AssertionStatusDirectives: AllStatic { 1328 private: 1329 enum { 1330 hc_classes_offset, 1331 hc_classEnabled_offset, 1332 hc_packages_offset, 1333 hc_packageEnabled_offset, 1334 hc_deflt_offset 1335 }; 1336 1337 static int classes_offset; 1338 static int classEnabled_offset; 1339 static int packages_offset; 1340 static int packageEnabled_offset; 1341 static int deflt_offset; 1342 1343 public: 1344 // Setters 1345 static void set_classes(oop obj, oop val); 1346 static void set_classEnabled(oop obj, oop val); 1347 static void set_packages(oop obj, oop val); 1348 static void set_packageEnabled(oop obj, oop val); 1349 static void set_deflt(oop obj, bool val); 1350 // Debugging 1351 friend class JavaClasses; 1352 }; 1353 1354 1355 class java_nio_Buffer: AllStatic { 1356 private: 1357 static int _limit_offset; 1358 1359 public: 1360 static int limit_offset(); 1361 static void compute_offsets(); 1362 }; 1363 1364 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { 1365 private: 1366 static int _owner_offset; 1367 public: 1368 static void initialize(TRAPS); 1369 static oop get_owner_threadObj(oop obj); 1370 }; 1371 1372 // Use to declare fields that need to be injected into Java classes 1373 // for the JVM to use. The name_index and signature_index are 1374 // declared in vmSymbols. The may_be_java flag is used to declare 1375 // fields that might already exist in Java but should be injected if 1376 // they don't. Otherwise the field is unconditionally injected and 1377 // the JVM uses the injected one. This is to ensure that name 1378 // collisions don't occur. In general may_be_java should be false 1379 // unless there's a good reason. 1380 1381 class InjectedField { 1382 public: 1383 const SystemDictionary::WKID klass_id; 1384 const vmSymbols::SID name_index; 1385 const vmSymbols::SID signature_index; 1386 const bool may_be_java; 1387 1388 1389 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); } 1390 Symbol* name() const { return lookup_symbol(name_index); } 1391 Symbol* signature() const { return lookup_symbol(signature_index); } 1392 1393 int compute_offset(); 1394 1395 // Find the Symbol for this index 1396 static Symbol* lookup_symbol(int symbol_index) { 1397 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index); 1398 } 1399 }; 1400 1401 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \ 1402 klass##_##name##_enum, 1403 1404 #define ALL_INJECTED_FIELDS(macro) \ 1405 CLASS_INJECTED_FIELDS(macro) \ 1406 CLASSLOADER_INJECTED_FIELDS(macro) \ 1407 MEMBERNAME_INJECTED_FIELDS(macro) 1408 1409 // Interface to hard-coded offset checking 1410 1411 class JavaClasses : AllStatic { 1412 private: 1413 1414 static InjectedField _injected_fields[]; 1415 1416 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; 1417 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; 1418 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; 1419 1420 public: 1421 enum InjectedFieldID { 1422 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM) 1423 MAX_enum 1424 }; 1425 1426 static int compute_injected_offset(InjectedFieldID id); 1427 1428 static void compute_hard_coded_offsets(); 1429 static void compute_offsets(); 1430 static void check_offsets() PRODUCT_RETURN; 1431 1432 static InjectedField* get_injected(Symbol* class_name, int* field_count); 1433 }; 1434 1435 #undef DECLARE_INJECTED_FIELD_ENUM 1436 1437 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP