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 return obj != NULL && obj->klass() == SystemDictionary::String_klass(); 209 } 210 211 // Debugging 212 static void print(oop java_string, outputStream* st); 213 friend class JavaClasses; 214 }; 215 216 217 // Interface to java.lang.Class objects 218 219 #define CLASS_INJECTED_FIELDS(macro) \ 220 macro(java_lang_Class, klass, intptr_signature, false) \ 221 macro(java_lang_Class, array_klass, intptr_signature, false) \ 222 macro(java_lang_Class, oop_size, int_signature, false) \ 223 macro(java_lang_Class, static_oop_field_count, int_signature, false) \ 224 macro(java_lang_Class, protection_domain, object_signature, false) \ 225 macro(java_lang_Class, signers, object_signature, false) 226 227 class java_lang_Class : AllStatic { 228 friend class VMStructs; 229 230 private: 231 // The fake offsets are added by the class loader when java.lang.Class is loaded 232 233 static int _klass_offset; 234 static int _array_klass_offset; 235 236 static int _oop_size_offset; 237 static int _static_oop_field_count_offset; 238 239 static int _protection_domain_offset; 240 static int _init_lock_offset; 241 static int _signers_offset; 242 static int _class_loader_offset; 243 static int _component_mirror_offset; 244 245 static bool offsets_computed; 246 static int classRedefinedCount_offset; 247 248 static GrowableArray<Klass*>* _fixup_mirror_list; 249 250 static void set_init_lock(oop java_class, oop init_lock); 251 static void set_protection_domain(oop java_class, oop protection_domain); 252 static void set_class_loader(oop java_class, oop class_loader); 253 static void set_component_mirror(oop java_class, oop comp_mirror); 254 static void initialize_mirror_fields(KlassHandle k, Handle mirror, Handle protection_domain, TRAPS); 255 public: 256 static void compute_offsets(); 257 258 // Instance creation 259 static void create_mirror(KlassHandle k, Handle class_loader, 260 Handle protection_domain, TRAPS); 261 static void fixup_mirror(KlassHandle k, TRAPS); 262 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); 263 // Conversion 264 static Klass* as_Klass(oop java_class); 265 static void set_klass(oop java_class, Klass* klass); 266 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL); 267 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) { 268 Klass* refk_oop = NULL; 269 BasicType result = as_BasicType(java_class, &refk_oop); 270 (*reference_klass) = KlassHandle(refk_oop); 271 return result; 272 } 273 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS); 274 static void print_signature(oop java_class, outputStream *st); 275 // Testing 276 static bool is_instance(oop obj) { 277 return obj != NULL && obj->klass() == SystemDictionary::Class_klass(); 278 } 279 static bool is_primitive(oop java_class); 280 static BasicType primitive_type(oop java_class); 281 static oop primitive_mirror(BasicType t); 282 // JVM_NewArray support 283 static Klass* array_klass(oop java_class); 284 static void set_array_klass(oop java_class, Klass* klass); 285 // compiler support for class operations 286 static int klass_offset_in_bytes() { return _klass_offset; } 287 static int array_klass_offset_in_bytes() { return _array_klass_offset; } 288 // Support for classRedefinedCount field 289 static int classRedefinedCount(oop the_class_mirror); 290 static void set_classRedefinedCount(oop the_class_mirror, int value); 291 292 // Support for embedded per-class oops 293 static oop protection_domain(oop java_class); 294 static oop init_lock(oop java_class); 295 static oop component_mirror(oop java_class); 296 static objArrayOop signers(oop java_class); 297 static void set_signers(oop java_class, objArrayOop signers); 298 299 static oop class_loader(oop java_class); 300 301 static int oop_size(oop java_class); 302 static void set_oop_size(oop java_class, int size); 303 static int static_oop_field_count(oop java_class); 304 static void set_static_oop_field_count(oop java_class, int size); 305 306 static GrowableArray<Klass*>* fixup_mirror_list() { 307 return _fixup_mirror_list; 308 } 309 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) { 310 _fixup_mirror_list = v; 311 } 312 // Debugging 313 friend class JavaClasses; 314 friend class InstanceKlass; // verification code accesses offsets 315 friend class ClassFileParser; // access to number_of_fake_fields 316 }; 317 318 // Interface to java.lang.Thread objects 319 320 class java_lang_Thread : AllStatic { 321 private: 322 // Note that for this class the layout changed between JDK1.2 and JDK1.3, 323 // so we compute the offsets at startup rather than hard-wiring them. 324 static int _name_offset; 325 static int _group_offset; 326 static int _contextClassLoader_offset; 327 static int _inheritedAccessControlContext_offset; 328 static int _priority_offset; 329 static int _eetop_offset; 330 static int _daemon_offset; 331 static int _stillborn_offset; 332 static int _stackSize_offset; 333 static int _tid_offset; 334 static int _thread_status_offset; 335 static int _park_blocker_offset; 336 static int _park_event_offset ; 337 338 static void compute_offsets(); 339 340 public: 341 // Instance creation 342 static oop create(); 343 // Returns the JavaThread associated with the thread obj 344 static JavaThread* thread(oop java_thread); 345 // Set JavaThread for instance 346 static void set_thread(oop java_thread, JavaThread* thread); 347 // Name 348 static typeArrayOop name(oop java_thread); 349 static void set_name(oop java_thread, typeArrayOop name); 350 // Priority 351 static ThreadPriority priority(oop java_thread); 352 static void set_priority(oop java_thread, ThreadPriority priority); 353 // Thread group 354 static oop threadGroup(oop java_thread); 355 // Stillborn 356 static bool is_stillborn(oop java_thread); 357 static void set_stillborn(oop java_thread); 358 // Alive (NOTE: this is not really a field, but provides the correct 359 // definition without doing a Java call) 360 static bool is_alive(oop java_thread); 361 // Daemon 362 static bool is_daemon(oop java_thread); 363 static void set_daemon(oop java_thread); 364 // Context ClassLoader 365 static oop context_class_loader(oop java_thread); 366 // Control context 367 static oop inherited_access_control_context(oop java_thread); 368 // Stack size hint 369 static jlong stackSize(oop java_thread); 370 // Thread ID 371 static jlong thread_id(oop java_thread); 372 373 // Blocker object responsible for thread parking 374 static oop park_blocker(oop java_thread); 375 376 // Pointer to type-stable park handler, encoded as jlong. 377 // Should be set when apparently null 378 // For details, see unsafe.cpp Unsafe_Unpark 379 static jlong park_event(oop java_thread); 380 static bool set_park_event(oop java_thread, jlong ptr); 381 382 // Java Thread Status for JVMTI and M&M use. 383 // This thread status info is saved in threadStatus field of 384 // java.lang.Thread java class. 385 enum ThreadStatus { 386 NEW = 0, 387 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running 388 JVMTI_THREAD_STATE_RUNNABLE, 389 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() 390 JVMTI_THREAD_STATE_WAITING + 391 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + 392 JVMTI_THREAD_STATE_SLEEPING, 393 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() 394 JVMTI_THREAD_STATE_WAITING + 395 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + 396 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, 397 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) 398 JVMTI_THREAD_STATE_WAITING + 399 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + 400 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, 401 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() 402 JVMTI_THREAD_STATE_WAITING + 403 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + 404 JVMTI_THREAD_STATE_PARKED, 405 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) 406 JVMTI_THREAD_STATE_WAITING + 407 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + 408 JVMTI_THREAD_STATE_PARKED, 409 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block 410 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, 411 TERMINATED = JVMTI_THREAD_STATE_TERMINATED 412 }; 413 // Write thread status info to threadStatus field of java.lang.Thread. 414 static void set_thread_status(oop java_thread_oop, ThreadStatus status); 415 // Read thread status info from threadStatus field of java.lang.Thread. 416 static ThreadStatus get_thread_status(oop java_thread_oop); 417 418 static const char* thread_status_name(oop java_thread_oop); 419 420 // Debugging 421 friend class JavaClasses; 422 }; 423 424 // Interface to java.lang.ThreadGroup objects 425 426 class java_lang_ThreadGroup : AllStatic { 427 private: 428 static int _parent_offset; 429 static int _name_offset; 430 static int _threads_offset; 431 static int _groups_offset; 432 static int _maxPriority_offset; 433 static int _destroyed_offset; 434 static int _daemon_offset; 435 static int _vmAllowSuspension_offset; 436 static int _nthreads_offset; 437 static int _ngroups_offset; 438 439 static void compute_offsets(); 440 441 public: 442 // parent ThreadGroup 443 static oop parent(oop java_thread_group); 444 // name 445 static typeArrayOop name(oop java_thread_group); 446 // ("name as oop" accessor is not necessary) 447 // Number of threads in group 448 static int nthreads(oop java_thread_group); 449 // threads 450 static objArrayOop threads(oop java_thread_group); 451 // Number of threads in group 452 static int ngroups(oop java_thread_group); 453 // groups 454 static objArrayOop groups(oop java_thread_group); 455 // maxPriority in group 456 static ThreadPriority maxPriority(oop java_thread_group); 457 // Destroyed 458 static bool is_destroyed(oop java_thread_group); 459 // Daemon 460 static bool is_daemon(oop java_thread_group); 461 // vmAllowSuspension 462 static bool is_vmAllowSuspension(oop java_thread_group); 463 // Debugging 464 friend class JavaClasses; 465 }; 466 467 468 469 // Interface to java.lang.Throwable objects 470 471 class java_lang_Throwable: AllStatic { 472 friend class BacktraceBuilder; 473 474 private: 475 // Offsets 476 enum { 477 hc_backtrace_offset = 0, 478 hc_detailMessage_offset = 1, 479 hc_cause_offset = 2, // New since 1.4 480 hc_stackTrace_offset = 3 // New since 1.4 481 }; 482 enum { 483 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7 484 }; 485 // Trace constants 486 enum { 487 trace_methods_offset = 0, 488 trace_bcis_offset = 1, 489 trace_mirrors_offset = 2, 490 trace_next_offset = 3, 491 trace_size = 4, 492 trace_chunk_size = 32 493 }; 494 495 static int backtrace_offset; 496 static int detailMessage_offset; 497 static int cause_offset; 498 static int stackTrace_offset; 499 static int static_unassigned_stacktrace_offset; 500 501 // Printing 502 static char* print_stack_element_to_buffer(Handle mirror, int method, int version, int bci); 503 // StackTrace (programmatic access, new since 1.4) 504 static void clear_stacktrace(oop throwable); 505 // No stack trace available 506 static const char* no_stack_trace_message(); 507 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) 508 static void set_stacktrace(oop throwable, oop st_element_array); 509 static oop unassigned_stacktrace(); 510 511 public: 512 // Backtrace 513 static oop backtrace(oop throwable); 514 static void set_backtrace(oop throwable, oop value); 515 // Needed by JVMTI to filter out this internal field. 516 static int get_backtrace_offset() { return backtrace_offset;} 517 static int get_detailMessage_offset() { return detailMessage_offset;} 518 // Message 519 static oop message(oop throwable); 520 static oop message(Handle throwable); 521 static void set_message(oop throwable, oop value); 522 static Symbol* detail_message(oop throwable); 523 static void print_stack_element(outputStream *st, Handle mirror, int method, 524 int version, int bci); 525 static void print_stack_element(outputStream *st, methodHandle method, int bci); 526 static void print_stack_usage(Handle stream); 527 528 // Allocate space for backtrace (created but stack trace not filled in) 529 static void allocate_backtrace(Handle throwable, TRAPS); 530 // Fill in current stack trace for throwable with preallocated backtrace (no GC) 531 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); 532 // Fill in current stack trace, can cause GC 533 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS); 534 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle()); 535 // Programmatic access to stack trace 536 static oop get_stack_trace_element(oop throwable, int index, TRAPS); 537 static int get_stack_trace_depth(oop throwable, TRAPS); 538 // Printing 539 static void print(oop throwable, outputStream* st); 540 static void print(Handle throwable, outputStream* st); 541 static void print_stack_trace(oop throwable, outputStream* st); 542 // Debugging 543 friend class JavaClasses; 544 }; 545 546 547 // Interface to java.lang.reflect.AccessibleObject objects 548 549 class java_lang_reflect_AccessibleObject: AllStatic { 550 private: 551 // Note that to reduce dependencies on the JDK we compute these 552 // offsets at run-time. 553 static int override_offset; 554 555 static void compute_offsets(); 556 557 public: 558 // Accessors 559 static jboolean override(oop reflect); 560 static void set_override(oop reflect, jboolean value); 561 562 // Debugging 563 friend class JavaClasses; 564 }; 565 566 567 // Interface to java.lang.reflect.Method objects 568 569 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { 570 private: 571 // Note that to reduce dependencies on the JDK we compute these 572 // offsets at run-time. 573 static int clazz_offset; 574 static int name_offset; 575 static int returnType_offset; 576 static int parameterTypes_offset; 577 static int exceptionTypes_offset; 578 static int slot_offset; 579 static int modifiers_offset; 580 static int signature_offset; 581 static int annotations_offset; 582 static int parameter_annotations_offset; 583 static int annotation_default_offset; 584 static int type_annotations_offset; 585 586 static void compute_offsets(); 587 588 public: 589 // Allocation 590 static Handle create(TRAPS); 591 592 // Accessors 593 static oop clazz(oop reflect); 594 static void set_clazz(oop reflect, oop value); 595 596 static oop name(oop method); 597 static void set_name(oop method, oop value); 598 599 static oop return_type(oop method); 600 static void set_return_type(oop method, oop value); 601 602 static oop parameter_types(oop method); 603 static void set_parameter_types(oop method, oop value); 604 605 static oop exception_types(oop method); 606 static void set_exception_types(oop method, oop value); 607 608 static int slot(oop reflect); 609 static void set_slot(oop reflect, int value); 610 611 static int modifiers(oop method); 612 static void set_modifiers(oop method, int value); 613 614 static bool has_signature_field(); 615 static oop signature(oop method); 616 static void set_signature(oop method, oop value); 617 618 static bool has_annotations_field(); 619 static oop annotations(oop method); 620 static void set_annotations(oop method, oop value); 621 622 static bool has_parameter_annotations_field(); 623 static oop parameter_annotations(oop method); 624 static void set_parameter_annotations(oop method, oop value); 625 626 static bool has_annotation_default_field(); 627 static oop annotation_default(oop method); 628 static void set_annotation_default(oop method, oop value); 629 630 static bool has_type_annotations_field(); 631 static oop type_annotations(oop method); 632 static void set_type_annotations(oop method, oop value); 633 634 // Debugging 635 friend class JavaClasses; 636 }; 637 638 639 // Interface to java.lang.reflect.Constructor objects 640 641 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { 642 private: 643 // Note that to reduce dependencies on the JDK we compute these 644 // offsets at run-time. 645 static int clazz_offset; 646 static int parameterTypes_offset; 647 static int exceptionTypes_offset; 648 static int slot_offset; 649 static int modifiers_offset; 650 static int signature_offset; 651 static int annotations_offset; 652 static int parameter_annotations_offset; 653 static int type_annotations_offset; 654 655 static void compute_offsets(); 656 657 public: 658 // Allocation 659 static Handle create(TRAPS); 660 661 // Accessors 662 static oop clazz(oop reflect); 663 static void set_clazz(oop reflect, oop value); 664 665 static oop parameter_types(oop constructor); 666 static void set_parameter_types(oop constructor, oop value); 667 668 static oop exception_types(oop constructor); 669 static void set_exception_types(oop constructor, oop value); 670 671 static int slot(oop reflect); 672 static void set_slot(oop reflect, int value); 673 674 static int modifiers(oop constructor); 675 static void set_modifiers(oop constructor, int value); 676 677 static bool has_signature_field(); 678 static oop signature(oop constructor); 679 static void set_signature(oop constructor, oop value); 680 681 static bool has_annotations_field(); 682 static oop annotations(oop constructor); 683 static void set_annotations(oop constructor, oop value); 684 685 static bool has_parameter_annotations_field(); 686 static oop parameter_annotations(oop method); 687 static void set_parameter_annotations(oop method, oop value); 688 689 static bool has_type_annotations_field(); 690 static oop type_annotations(oop constructor); 691 static void set_type_annotations(oop constructor, oop value); 692 693 // Debugging 694 friend class JavaClasses; 695 }; 696 697 698 // Interface to java.lang.reflect.Field objects 699 700 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { 701 private: 702 // Note that to reduce dependencies on the JDK we compute these 703 // offsets at run-time. 704 static int clazz_offset; 705 static int name_offset; 706 static int type_offset; 707 static int slot_offset; 708 static int modifiers_offset; 709 static int signature_offset; 710 static int annotations_offset; 711 static int type_annotations_offset; 712 713 static void compute_offsets(); 714 715 public: 716 // Allocation 717 static Handle create(TRAPS); 718 719 // Accessors 720 static oop clazz(oop reflect); 721 static void set_clazz(oop reflect, oop value); 722 723 static oop name(oop field); 724 static void set_name(oop field, oop value); 725 726 static oop type(oop field); 727 static void set_type(oop field, oop value); 728 729 static int slot(oop reflect); 730 static void set_slot(oop reflect, int value); 731 732 static int modifiers(oop field); 733 static void set_modifiers(oop field, int value); 734 735 static bool has_signature_field(); 736 static oop signature(oop constructor); 737 static void set_signature(oop constructor, oop value); 738 739 static bool has_annotations_field(); 740 static oop annotations(oop constructor); 741 static void set_annotations(oop constructor, oop value); 742 743 static bool has_parameter_annotations_field(); 744 static oop parameter_annotations(oop method); 745 static void set_parameter_annotations(oop method, oop value); 746 747 static bool has_annotation_default_field(); 748 static oop annotation_default(oop method); 749 static void set_annotation_default(oop method, oop value); 750 751 static bool has_type_annotations_field(); 752 static oop type_annotations(oop field); 753 static void set_type_annotations(oop field, oop value); 754 755 // Debugging 756 friend class JavaClasses; 757 }; 758 759 class java_lang_reflect_Parameter { 760 private: 761 // Note that to reduce dependencies on the JDK we compute these 762 // offsets at run-time. 763 static int name_offset; 764 static int modifiers_offset; 765 static int index_offset; 766 static int executable_offset; 767 768 static void compute_offsets(); 769 770 public: 771 // Allocation 772 static Handle create(TRAPS); 773 774 // Accessors 775 static oop name(oop field); 776 static void set_name(oop field, oop value); 777 778 static int index(oop reflect); 779 static void set_index(oop reflect, int value); 780 781 static int modifiers(oop reflect); 782 static void set_modifiers(oop reflect, int value); 783 784 static oop executable(oop constructor); 785 static void set_executable(oop constructor, oop value); 786 787 friend class JavaClasses; 788 }; 789 790 // Interface to sun.reflect.ConstantPool objects 791 class sun_reflect_ConstantPool { 792 private: 793 // Note that to reduce dependencies on the JDK we compute these 794 // offsets at run-time. 795 static int _oop_offset; 796 797 static void compute_offsets(); 798 799 public: 800 // Allocation 801 static Handle create(TRAPS); 802 803 // Accessors 804 static void set_cp(oop reflect, ConstantPool* value); 805 static int oop_offset() { 806 return _oop_offset; 807 } 808 809 static ConstantPool* get_cp(oop reflect); 810 811 // Debugging 812 friend class JavaClasses; 813 }; 814 815 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects 816 class sun_reflect_UnsafeStaticFieldAccessorImpl { 817 private: 818 static int _base_offset; 819 static void compute_offsets(); 820 821 public: 822 static int base_offset() { 823 return _base_offset; 824 } 825 826 // Debugging 827 friend class JavaClasses; 828 }; 829 830 // Interface to java.lang primitive type boxing objects: 831 // - java.lang.Boolean 832 // - java.lang.Character 833 // - java.lang.Float 834 // - java.lang.Double 835 // - java.lang.Byte 836 // - java.lang.Short 837 // - java.lang.Integer 838 // - java.lang.Long 839 840 // This could be separated out into 8 individual classes. 841 842 class java_lang_boxing_object: AllStatic { 843 private: 844 enum { 845 hc_value_offset = 0 846 }; 847 static int value_offset; 848 static int long_value_offset; 849 850 static oop initialize_and_allocate(BasicType type, TRAPS); 851 public: 852 // Allocation. Returns a boxed value, or NULL for invalid type. 853 static oop create(BasicType type, jvalue* value, TRAPS); 854 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. 855 static BasicType get_value(oop box, jvalue* value); 856 static BasicType set_value(oop box, jvalue* value); 857 static BasicType basic_type(oop box); 858 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } 859 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } 860 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } 861 static void print(BasicType type, jvalue* value, outputStream* st); 862 863 static int value_offset_in_bytes(BasicType type) { 864 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : 865 value_offset; 866 } 867 868 // Debugging 869 friend class JavaClasses; 870 }; 871 872 873 874 // Interface to java.lang.ref.Reference objects 875 876 class java_lang_ref_Reference: AllStatic { 877 public: 878 enum { 879 hc_referent_offset = 0, 880 hc_queue_offset = 1, 881 hc_next_offset = 2, 882 hc_discovered_offset = 3 // Is not last, see SoftRefs. 883 }; 884 enum { 885 hc_static_lock_offset = 0, 886 hc_static_pending_offset = 1 887 }; 888 889 static int referent_offset; 890 static int queue_offset; 891 static int next_offset; 892 static int discovered_offset; 893 static int static_lock_offset; 894 static int static_pending_offset; 895 static int number_of_fake_oop_fields; 896 897 // Accessors 898 static oop referent(oop ref) { 899 return ref->obj_field(referent_offset); 900 } 901 static void set_referent(oop ref, oop value) { 902 ref->obj_field_put(referent_offset, value); 903 } 904 static void set_referent_raw(oop ref, oop value) { 905 ref->obj_field_put_raw(referent_offset, value); 906 } 907 static HeapWord* referent_addr(oop ref) { 908 return ref->obj_field_addr<HeapWord>(referent_offset); 909 } 910 static oop next(oop ref) { 911 return ref->obj_field(next_offset); 912 } 913 static void set_next(oop ref, oop value) { 914 ref->obj_field_put(next_offset, value); 915 } 916 static void set_next_raw(oop ref, oop value) { 917 ref->obj_field_put_raw(next_offset, value); 918 } 919 static HeapWord* next_addr(oop ref) { 920 return ref->obj_field_addr<HeapWord>(next_offset); 921 } 922 static oop discovered(oop ref) { 923 return ref->obj_field(discovered_offset); 924 } 925 static void set_discovered(oop ref, oop value) { 926 ref->obj_field_put(discovered_offset, value); 927 } 928 static void set_discovered_raw(oop ref, oop value) { 929 ref->obj_field_put_raw(discovered_offset, value); 930 } 931 static HeapWord* discovered_addr(oop ref) { 932 return ref->obj_field_addr<HeapWord>(discovered_offset); 933 } 934 // Accessors for statics 935 static oop pending_list_lock(); 936 static oop pending_list(); 937 938 static HeapWord* pending_list_lock_addr(); 939 static HeapWord* pending_list_addr(); 940 }; 941 942 943 // Interface to java.lang.ref.SoftReference objects 944 945 class java_lang_ref_SoftReference: public java_lang_ref_Reference { 946 public: 947 enum { 948 // The timestamp is a long field and may need to be adjusted for alignment. 949 hc_timestamp_offset = hc_discovered_offset + 1 950 }; 951 enum { 952 hc_static_clock_offset = 0 953 }; 954 955 static int timestamp_offset; 956 static int static_clock_offset; 957 958 // Accessors 959 static jlong timestamp(oop ref); 960 961 // Accessors for statics 962 static jlong clock(); 963 static void set_clock(jlong value); 964 }; 965 966 967 // Interface to java.lang.invoke.MethodHandle objects 968 969 class MethodHandleEntry; 970 971 class java_lang_invoke_MethodHandle: AllStatic { 972 friend class JavaClasses; 973 974 private: 975 static int _type_offset; // the MethodType of this MH 976 static int _form_offset; // the LambdaForm of this MH 977 978 static void compute_offsets(); 979 980 public: 981 // Accessors 982 static oop type(oop mh); 983 static void set_type(oop mh, oop mtype); 984 985 static oop form(oop mh); 986 static void set_form(oop mh, oop lform); 987 988 // Testers 989 static bool is_subclass(Klass* klass) { 990 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass()); 991 } 992 static bool is_instance(oop obj) { 993 return obj != NULL && is_subclass(obj->klass()); 994 } 995 996 // Accessors for code generation: 997 static int type_offset_in_bytes() { return _type_offset; } 998 static int form_offset_in_bytes() { return _form_offset; } 999 }; 1000 1001 // Interface to java.lang.invoke.DirectMethodHandle objects 1002 1003 class java_lang_invoke_DirectMethodHandle: AllStatic { 1004 friend class JavaClasses; 1005 1006 private: 1007 static int _member_offset; // the MemberName of this DMH 1008 1009 static void compute_offsets(); 1010 1011 public: 1012 // Accessors 1013 static oop member(oop mh); 1014 1015 // Testers 1016 static bool is_subclass(Klass* klass) { 1017 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass()); 1018 } 1019 static bool is_instance(oop obj) { 1020 return obj != NULL && is_subclass(obj->klass()); 1021 } 1022 1023 // Accessors for code generation: 1024 static int member_offset_in_bytes() { return _member_offset; } 1025 }; 1026 1027 // Interface to java.lang.invoke.LambdaForm objects 1028 // (These are a private interface for managing adapter code generation.) 1029 1030 class java_lang_invoke_LambdaForm: AllStatic { 1031 friend class JavaClasses; 1032 1033 private: 1034 static int _vmentry_offset; // type is MemberName 1035 1036 static void compute_offsets(); 1037 1038 public: 1039 // Accessors 1040 static oop vmentry(oop lform); 1041 static void set_vmentry(oop lform, oop invoker); 1042 1043 // Testers 1044 static bool is_subclass(Klass* klass) { 1045 return SystemDictionary::LambdaForm_klass() != NULL && 1046 klass->is_subclass_of(SystemDictionary::LambdaForm_klass()); 1047 } 1048 static bool is_instance(oop obj) { 1049 return obj != NULL && is_subclass(obj->klass()); 1050 } 1051 1052 // Accessors for code generation: 1053 static int vmentry_offset_in_bytes() { return _vmentry_offset; } 1054 }; 1055 1056 1057 // Interface to java.lang.invoke.MemberName objects 1058 // (These are a private interface for Java code to query the class hierarchy.) 1059 1060 #define MEMBERNAME_INJECTED_FIELDS(macro) \ 1061 macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \ 1062 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) \ 1063 macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false) 1064 1065 class java_lang_invoke_MemberName: AllStatic { 1066 friend class JavaClasses; 1067 1068 private: 1069 // From java.lang.invoke.MemberName: 1070 // private Class<?> clazz; // class in which the method is defined 1071 // private String name; // may be null if not yet materialized 1072 // private Object type; // may be null if not yet materialized 1073 // private int flags; // modifier bits; see reflect.Modifier 1074 // private intptr vmtarget; // VM-specific target value 1075 // private intptr_t vmindex; // member index within class or interface 1076 static int _clazz_offset; 1077 static int _name_offset; 1078 static int _type_offset; 1079 static int _flags_offset; 1080 static int _vmtarget_offset; 1081 static int _vmloader_offset; 1082 static int _vmindex_offset; 1083 1084 static void compute_offsets(); 1085 1086 public: 1087 // Accessors 1088 static oop clazz(oop mname); 1089 static void set_clazz(oop mname, oop clazz); 1090 1091 static oop type(oop mname); 1092 static void set_type(oop mname, oop type); 1093 1094 static oop name(oop mname); 1095 static void set_name(oop mname, oop name); 1096 1097 static int flags(oop mname); 1098 static void set_flags(oop mname, int flags); 1099 1100 static Metadata* vmtarget(oop mname); 1101 static void set_vmtarget(oop mname, Metadata* target); 1102 #if INCLUDE_JVMTI 1103 static void adjust_vmtarget(oop mname, Metadata* target); 1104 #endif // INCLUDE_JVMTI 1105 1106 static intptr_t vmindex(oop mname); 1107 static void set_vmindex(oop mname, intptr_t index); 1108 1109 // Testers 1110 static bool is_subclass(Klass* klass) { 1111 return klass->is_subclass_of(SystemDictionary::MemberName_klass()); 1112 } 1113 static bool is_instance(oop obj) { 1114 return obj != NULL && is_subclass(obj->klass()); 1115 } 1116 1117 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): 1118 enum { 1119 MN_IS_METHOD = 0x00010000, // method (not constructor) 1120 MN_IS_CONSTRUCTOR = 0x00020000, // constructor 1121 MN_IS_FIELD = 0x00040000, // field 1122 MN_IS_TYPE = 0x00080000, // nested type 1123 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected 1124 MN_REFERENCE_KIND_SHIFT = 24, // refKind 1125 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, 1126 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers: 1127 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes 1128 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces 1129 }; 1130 1131 // Accessors for code generation: 1132 static int clazz_offset_in_bytes() { return _clazz_offset; } 1133 static int type_offset_in_bytes() { return _type_offset; } 1134 static int name_offset_in_bytes() { return _name_offset; } 1135 static int flags_offset_in_bytes() { return _flags_offset; } 1136 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } 1137 static int vmindex_offset_in_bytes() { return _vmindex_offset; } 1138 }; 1139 1140 1141 // Interface to java.lang.invoke.MethodType objects 1142 1143 class java_lang_invoke_MethodType: AllStatic { 1144 friend class JavaClasses; 1145 1146 private: 1147 static int _rtype_offset; 1148 static int _ptypes_offset; 1149 1150 static void compute_offsets(); 1151 1152 public: 1153 // Accessors 1154 static oop rtype(oop mt); 1155 static objArrayOop ptypes(oop mt); 1156 1157 static oop ptype(oop mt, int index); 1158 static int ptype_count(oop mt); 1159 1160 static int ptype_slot_count(oop mt); // extra counts for long/double 1161 static int rtype_slot_count(oop mt); // extra counts for long/double 1162 1163 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS); 1164 static void print_signature(oop mt, outputStream* st); 1165 1166 static bool is_instance(oop obj) { 1167 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass(); 1168 } 1169 1170 static bool equals(oop mt1, oop mt2); 1171 1172 // Accessors for code generation: 1173 static int rtype_offset_in_bytes() { return _rtype_offset; } 1174 static int ptypes_offset_in_bytes() { return _ptypes_offset; } 1175 }; 1176 1177 1178 // Interface to java.lang.invoke.CallSite objects 1179 1180 class java_lang_invoke_CallSite: AllStatic { 1181 friend class JavaClasses; 1182 1183 private: 1184 static int _target_offset; 1185 1186 static void compute_offsets(); 1187 1188 public: 1189 // Accessors 1190 static oop target( oop site) { return site->obj_field( _target_offset); } 1191 static void set_target( oop site, oop target) { site->obj_field_put( _target_offset, target); } 1192 1193 static volatile oop target_volatile(oop site) { return oop((oopDesc *)(site->obj_field_volatile(_target_offset))); } 1194 static void set_target_volatile(oop site, oop target) { site->obj_field_put_volatile(_target_offset, target); } 1195 1196 // Testers 1197 static bool is_subclass(Klass* klass) { 1198 return klass->is_subclass_of(SystemDictionary::CallSite_klass()); 1199 } 1200 static bool is_instance(oop obj) { 1201 return obj != NULL && is_subclass(obj->klass()); 1202 } 1203 1204 // Accessors for code generation: 1205 static int target_offset_in_bytes() { return _target_offset; } 1206 }; 1207 1208 1209 // Interface to java.security.AccessControlContext objects 1210 1211 class java_security_AccessControlContext: AllStatic { 1212 private: 1213 // Note that for this class the layout changed between JDK1.2 and JDK1.3, 1214 // so we compute the offsets at startup rather than hard-wiring them. 1215 static int _context_offset; 1216 static int _privilegedContext_offset; 1217 static int _isPrivileged_offset; 1218 static int _isAuthorized_offset; 1219 1220 static void compute_offsets(); 1221 public: 1222 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); 1223 1224 static bool is_authorized(Handle context); 1225 1226 // Debugging/initialization 1227 friend class JavaClasses; 1228 }; 1229 1230 1231 // Interface to java.lang.ClassLoader objects 1232 1233 #define CLASSLOADER_INJECTED_FIELDS(macro) \ 1234 macro(java_lang_ClassLoader, loader_data, intptr_signature, false) 1235 1236 class java_lang_ClassLoader : AllStatic { 1237 private: 1238 // The fake offsets are added by the class loader when java.lang.Class is loaded 1239 enum { 1240 hc_parent_offset = 0 1241 }; 1242 static int _loader_data_offset; 1243 static bool offsets_computed; 1244 static int parent_offset; 1245 static int parallelCapable_offset; 1246 1247 public: 1248 static void compute_offsets(); 1249 1250 static ClassLoaderData** loader_data_addr(oop loader); 1251 static ClassLoaderData* loader_data(oop loader); 1252 1253 static oop parent(oop loader); 1254 static bool isAncestor(oop loader, oop cl); 1255 1256 // Support for parallelCapable field 1257 static bool parallelCapable(oop the_class_mirror); 1258 1259 static bool is_trusted_loader(oop loader); 1260 1261 // Fix for 4474172 1262 static oop non_reflection_class_loader(oop loader); 1263 1264 // Testers 1265 static bool is_subclass(Klass* klass) { 1266 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass()); 1267 } 1268 static bool is_instance(oop obj) { 1269 return obj != NULL && is_subclass(obj->klass()); 1270 } 1271 1272 // Debugging 1273 friend class JavaClasses; 1274 friend class ClassFileParser; // access to number_of_fake_fields 1275 }; 1276 1277 1278 // Interface to java.lang.System objects 1279 1280 class java_lang_System : AllStatic { 1281 private: 1282 enum { 1283 hc_static_in_offset = 0, 1284 hc_static_out_offset = 1, 1285 hc_static_err_offset = 2, 1286 hc_static_security_offset = 3 1287 }; 1288 1289 static int static_in_offset; 1290 static int static_out_offset; 1291 static int static_err_offset; 1292 static int static_security_offset; 1293 1294 public: 1295 static int in_offset_in_bytes(); 1296 static int out_offset_in_bytes(); 1297 static int err_offset_in_bytes(); 1298 1299 static bool has_security_manager(); 1300 1301 // Debugging 1302 friend class JavaClasses; 1303 }; 1304 1305 1306 // Interface to java.lang.StackTraceElement objects 1307 1308 class java_lang_StackTraceElement: AllStatic { 1309 private: 1310 enum { 1311 hc_declaringClass_offset = 0, 1312 hc_methodName_offset = 1, 1313 hc_fileName_offset = 2, 1314 hc_lineNumber_offset = 3 1315 }; 1316 1317 static int declaringClass_offset; 1318 static int methodName_offset; 1319 static int fileName_offset; 1320 static int lineNumber_offset; 1321 1322 public: 1323 // Setters 1324 static void set_declaringClass(oop element, oop value); 1325 static void set_methodName(oop element, oop value); 1326 static void set_fileName(oop element, oop value); 1327 static void set_lineNumber(oop element, int value); 1328 1329 // Create an instance of StackTraceElement 1330 static oop create(Handle mirror, int method, int version, int bci, TRAPS); 1331 static oop create(methodHandle method, int bci, TRAPS); 1332 1333 // Debugging 1334 friend class JavaClasses; 1335 }; 1336 1337 1338 // Interface to java.lang.AssertionStatusDirectives objects 1339 1340 class java_lang_AssertionStatusDirectives: AllStatic { 1341 private: 1342 enum { 1343 hc_classes_offset, 1344 hc_classEnabled_offset, 1345 hc_packages_offset, 1346 hc_packageEnabled_offset, 1347 hc_deflt_offset 1348 }; 1349 1350 static int classes_offset; 1351 static int classEnabled_offset; 1352 static int packages_offset; 1353 static int packageEnabled_offset; 1354 static int deflt_offset; 1355 1356 public: 1357 // Setters 1358 static void set_classes(oop obj, oop val); 1359 static void set_classEnabled(oop obj, oop val); 1360 static void set_packages(oop obj, oop val); 1361 static void set_packageEnabled(oop obj, oop val); 1362 static void set_deflt(oop obj, bool val); 1363 // Debugging 1364 friend class JavaClasses; 1365 }; 1366 1367 1368 class java_nio_Buffer: AllStatic { 1369 private: 1370 static int _limit_offset; 1371 1372 public: 1373 static int limit_offset(); 1374 static void compute_offsets(); 1375 }; 1376 1377 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { 1378 private: 1379 static int _owner_offset; 1380 public: 1381 static void initialize(TRAPS); 1382 static oop get_owner_threadObj(oop obj); 1383 }; 1384 1385 // Use to declare fields that need to be injected into Java classes 1386 // for the JVM to use. The name_index and signature_index are 1387 // declared in vmSymbols. The may_be_java flag is used to declare 1388 // fields that might already exist in Java but should be injected if 1389 // they don't. Otherwise the field is unconditionally injected and 1390 // the JVM uses the injected one. This is to ensure that name 1391 // collisions don't occur. In general may_be_java should be false 1392 // unless there's a good reason. 1393 1394 class InjectedField { 1395 public: 1396 const SystemDictionary::WKID klass_id; 1397 const vmSymbols::SID name_index; 1398 const vmSymbols::SID signature_index; 1399 const bool may_be_java; 1400 1401 1402 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); } 1403 Symbol* name() const { return lookup_symbol(name_index); } 1404 Symbol* signature() const { return lookup_symbol(signature_index); } 1405 1406 int compute_offset(); 1407 1408 // Find the Symbol for this index 1409 static Symbol* lookup_symbol(int symbol_index) { 1410 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index); 1411 } 1412 }; 1413 1414 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \ 1415 klass##_##name##_enum, 1416 1417 #define ALL_INJECTED_FIELDS(macro) \ 1418 CLASS_INJECTED_FIELDS(macro) \ 1419 CLASSLOADER_INJECTED_FIELDS(macro) \ 1420 MEMBERNAME_INJECTED_FIELDS(macro) 1421 1422 // Interface to hard-coded offset checking 1423 1424 class JavaClasses : AllStatic { 1425 private: 1426 1427 static InjectedField _injected_fields[]; 1428 1429 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; 1430 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; 1431 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; 1432 1433 public: 1434 enum InjectedFieldID { 1435 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM) 1436 MAX_enum 1437 }; 1438 1439 static int compute_injected_offset(InjectedFieldID id); 1440 1441 static void compute_hard_coded_offsets(); 1442 static void compute_offsets(); 1443 static void check_offsets() PRODUCT_RETURN; 1444 1445 static InjectedField* get_injected(Symbol* class_name, int* field_count); 1446 }; 1447 1448 #undef DECLARE_INJECTED_FIELD_ENUM 1449 1450 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP