1 /* 2 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_CLASSFILE_JAVACLASSES_HPP 26 #define SHARE_VM_CLASSFILE_JAVACLASSES_HPP 27 28 #include "classfile/systemDictionary.hpp" 29 #include "jvmtifiles/jvmti.h" 30 #include "oops/oop.hpp" 31 #include "runtime/os.hpp" 32 #include "utilities/utf8.hpp" 33 34 // Interface for manipulating the basic Java classes. 35 // 36 // All dependencies on layout of actual Java classes should be kept here. 37 // If the layout of any of the classes above changes the offsets must be adjusted. 38 // 39 // For most classes we hardwire the offsets for performance reasons. In certain 40 // cases (e.g. java.security.AccessControlContext) we compute the offsets at 41 // startup since the layout here differs between JDK1.2 and JDK1.3. 42 // 43 // Note that fields (static and non-static) are arranged with oops before non-oops 44 // on a per class basis. The offsets below have to reflect this ordering. 45 // 46 // When editing the layouts please update the check_offset verification code 47 // correspondingly. The names in the enums must be identical to the actual field 48 // names in order for the verification code to work. 49 50 51 // Interface to java.lang.String objects 52 53 class java_lang_String : AllStatic { 54 private: 55 static int value_offset; 56 static int hash_offset; 57 static int coder_offset; 58 59 static bool initialized; 60 61 static Handle basic_create(int length, bool byte_arr, TRAPS); 62 63 static inline void set_coder(oop string, jbyte coder); 64 65 public: 66 67 // Coders 68 enum Coder { 69 CODER_LATIN1 = 0, 70 CODER_UTF16 = 1 71 }; 72 73 static void compute_offsets(); 74 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 75 76 // Instance creation 77 static Handle create_from_unicode(jchar* unicode, int len, TRAPS); 78 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS); 79 static Handle create_from_str(const char* utf8_str, TRAPS); 80 static oop create_oop_from_str(const char* utf8_str, TRAPS); 81 static Handle create_from_symbol(Symbol* symbol, TRAPS); 82 static Handle create_from_platform_dependent_str(const char* str, TRAPS); 83 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS); 84 85 static void set_compact_strings(bool value); 86 87 static int value_offset_in_bytes() { 88 assert(initialized && (value_offset > 0), "Must be initialized"); 89 return value_offset; 90 } 91 static int hash_offset_in_bytes() { 92 assert(initialized && (hash_offset > 0), "Must be initialized"); 93 return hash_offset; 94 } 95 static int coder_offset_in_bytes() { 96 assert(initialized && (coder_offset > 0), "Must be initialized"); 97 return coder_offset; 98 } 99 100 static inline void set_value_raw(oop string, typeArrayOop buffer); 101 static inline void set_value(oop string, typeArrayOop buffer); 102 static inline void set_hash(oop string, unsigned int hash); 103 104 // Accessors 105 static inline typeArrayOop value(oop java_string); 106 static inline typeArrayOop value_no_keepalive(oop java_string); 107 static inline unsigned int hash(oop java_string); 108 static inline bool is_latin1(oop java_string); 109 static inline int length(oop java_string); 110 static int utf8_length(oop java_string); 111 112 // String converters 113 static char* as_utf8_string(oop java_string); 114 static char* as_utf8_string(oop java_string, char* buf, int buflen); 115 static char* as_utf8_string(oop java_string, int start, int len); 116 static char* as_utf8_string(oop java_string, int start, int len, char* buf, int buflen); 117 static char* as_platform_dependent_str(Handle java_string, TRAPS); 118 static jchar* as_unicode_string(oop java_string, int& length, TRAPS); 119 // produce an ascii string with all other values quoted using \u#### 120 static char* as_quoted_ascii(oop java_string); 121 122 // Compute the hash value for a java.lang.String object which would 123 // contain the characters passed in. 124 // 125 // As the hash value used by the String object itself, in 126 // String.hashCode(). This value is normally calculated in Java code 127 // in the String.hashCode method(), but is precomputed for String 128 // objects in the shared archive file. 129 // hash P(31) from Kernighan & Ritchie 130 // 131 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode(). 132 static unsigned int hash_code(const jchar* s, int len) { 133 unsigned int h = 0; 134 while (len-- > 0) { 135 h = 31*h + (unsigned int) *s; 136 s++; 137 } 138 return h; 139 } 140 141 static unsigned int hash_code(const jbyte* s, int len) { 142 unsigned int h = 0; 143 while (len-- > 0) { 144 h = 31*h + (((unsigned int) *s) & 0xFF); 145 s++; 146 } 147 return h; 148 } 149 150 static unsigned int hash_code(oop java_string); 151 152 static bool equals(oop java_string, jchar* chars, int len); 153 static bool equals(oop str1, oop str2); 154 155 // Conversion between '.' and '/' formats 156 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); } 157 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); } 158 159 // Conversion 160 static Symbol* as_symbol(oop java_string, TRAPS); 161 static Symbol* as_symbol_or_null(oop java_string); 162 163 // Testers 164 static bool is_instance(oop obj); 165 static inline bool is_instance_inlined(oop obj); 166 167 // Debugging 168 static void print(oop java_string, outputStream* st); 169 friend class JavaClasses; 170 friend class StringTable; 171 }; 172 173 174 // Interface to java.lang.Class objects 175 176 #define CLASS_INJECTED_FIELDS(macro) \ 177 macro(java_lang_Class, klass, intptr_signature, false) \ 178 macro(java_lang_Class, array_klass, intptr_signature, false) \ 179 macro(java_lang_Class, oop_size, int_signature, false) \ 180 macro(java_lang_Class, static_oop_field_count, int_signature, false) \ 181 macro(java_lang_Class, protection_domain, object_signature, false) \ 182 macro(java_lang_Class, signers, object_signature, false) 183 184 class java_lang_Class : AllStatic { 185 friend class VMStructs; 186 friend class JVMCIVMStructs; 187 188 private: 189 // The fake offsets are added by the class loader when java.lang.Class is loaded 190 191 static int _klass_offset; 192 static int _array_klass_offset; 193 194 static int _oop_size_offset; 195 static int _static_oop_field_count_offset; 196 197 static int _protection_domain_offset; 198 static int _init_lock_offset; 199 static int _signers_offset; 200 static int _class_loader_offset; 201 static int _module_offset; 202 static int _component_mirror_offset; 203 204 static bool offsets_computed; 205 static int classRedefinedCount_offset; 206 207 static GrowableArray<Klass*>* _fixup_mirror_list; 208 static GrowableArray<Klass*>* _fixup_module_field_list; 209 210 static void set_init_lock(oop java_class, oop init_lock); 211 static void set_protection_domain(oop java_class, oop protection_domain); 212 static void set_class_loader(oop java_class, oop class_loader); 213 static void set_component_mirror(oop java_class, oop comp_mirror); 214 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS); 215 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS); 216 public: 217 static void allocate_fixup_lists(); 218 static void compute_offsets(); 219 220 // Instance creation 221 static void create_mirror(Klass* k, Handle class_loader, Handle module, 222 Handle protection_domain, TRAPS); 223 static void fixup_mirror(Klass* k, TRAPS); 224 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); 225 226 // Archiving 227 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 228 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN; 229 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL); 230 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD) 231 NOT_CDS_JAVA_HEAP_RETURN_(NULL); 232 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module, 233 Handle protection_domain, 234 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false); 235 236 static void fixup_module_field(Klass* k, Handle module); 237 238 // Conversion 239 static Klass* as_Klass(oop java_class); 240 static void set_klass(oop java_class, Klass* klass); 241 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL); 242 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS); 243 static void print_signature(oop java_class, outputStream *st); 244 static const char* as_external_name(oop java_class); 245 // Testing 246 static bool is_instance(oop obj); 247 248 static bool is_primitive(oop java_class); 249 static BasicType primitive_type(oop java_class); 250 static oop primitive_mirror(BasicType t); 251 // JVM_NewArray support 252 static Klass* array_klass_acquire(oop java_class); 253 static void release_set_array_klass(oop java_class, Klass* klass); 254 // compiler support for class operations 255 static int klass_offset_in_bytes() { return _klass_offset; } 256 static int array_klass_offset_in_bytes() { return _array_klass_offset; } 257 // Support for classRedefinedCount field 258 static int classRedefinedCount(oop the_class_mirror); 259 static void set_classRedefinedCount(oop the_class_mirror, int value); 260 261 // Support for embedded per-class oops 262 static oop protection_domain(oop java_class); 263 static oop init_lock(oop java_class); 264 static oop component_mirror(oop java_class); 265 static objArrayOop signers(oop java_class); 266 static void set_signers(oop java_class, objArrayOop signers); 267 268 static oop class_loader(oop java_class); 269 static void set_module(oop java_class, oop module); 270 static oop module(oop java_class); 271 272 static int oop_size(oop java_class); 273 static void set_oop_size(HeapWord* java_class, int size); 274 static int static_oop_field_count(oop java_class); 275 static void set_static_oop_field_count(oop java_class, int size); 276 277 static GrowableArray<Klass*>* fixup_mirror_list() { 278 return _fixup_mirror_list; 279 } 280 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) { 281 _fixup_mirror_list = v; 282 } 283 284 static GrowableArray<Klass*>* fixup_module_field_list() { 285 return _fixup_module_field_list; 286 } 287 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) { 288 _fixup_module_field_list = v; 289 } 290 291 // Debugging 292 friend class JavaClasses; 293 friend class InstanceKlass; // verification code accesses offsets 294 friend class ClassFileParser; // access to number_of_fake_fields 295 }; 296 297 // Interface to java.lang.Thread objects 298 299 class java_lang_Thread : AllStatic { 300 private: 301 // Note that for this class the layout changed between JDK1.2 and JDK1.3, 302 // so we compute the offsets at startup rather than hard-wiring them. 303 static int _name_offset; 304 static int _group_offset; 305 static int _contextClassLoader_offset; 306 static int _inheritedAccessControlContext_offset; 307 static int _priority_offset; 308 static int _eetop_offset; 309 static int _daemon_offset; 310 static int _stillborn_offset; 311 static int _stackSize_offset; 312 static int _tid_offset; 313 static int _thread_status_offset; 314 static int _park_blocker_offset; 315 static int _park_event_offset ; 316 317 static void compute_offsets(); 318 319 public: 320 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 321 322 // Instance creation 323 static oop create(); 324 // Returns the JavaThread associated with the thread obj 325 static JavaThread* thread(oop java_thread); 326 // Set JavaThread for instance 327 static void set_thread(oop java_thread, JavaThread* thread); 328 // Name 329 static oop name(oop java_thread); 330 static void set_name(oop java_thread, oop name); 331 // Priority 332 static ThreadPriority priority(oop java_thread); 333 static void set_priority(oop java_thread, ThreadPriority priority); 334 // Thread group 335 static oop threadGroup(oop java_thread); 336 // Stillborn 337 static bool is_stillborn(oop java_thread); 338 static void set_stillborn(oop java_thread); 339 // Alive (NOTE: this is not really a field, but provides the correct 340 // definition without doing a Java call) 341 static bool is_alive(oop java_thread); 342 // Daemon 343 static bool is_daemon(oop java_thread); 344 static void set_daemon(oop java_thread); 345 // Context ClassLoader 346 static oop context_class_loader(oop java_thread); 347 // Control context 348 static oop inherited_access_control_context(oop java_thread); 349 // Stack size hint 350 static jlong stackSize(oop java_thread); 351 // Thread ID 352 static jlong thread_id(oop java_thread); 353 354 // Blocker object responsible for thread parking 355 static oop park_blocker(oop java_thread); 356 357 // Pointer to type-stable park handler, encoded as jlong. 358 // Should be set when apparently null 359 // For details, see unsafe.cpp Unsafe_Unpark 360 static jlong park_event(oop java_thread); 361 static bool set_park_event(oop java_thread, jlong ptr); 362 363 // Java Thread Status for JVMTI and M&M use. 364 // This thread status info is saved in threadStatus field of 365 // java.lang.Thread java class. 366 enum ThreadStatus { 367 NEW = 0, 368 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running 369 JVMTI_THREAD_STATE_RUNNABLE, 370 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() 371 JVMTI_THREAD_STATE_WAITING + 372 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + 373 JVMTI_THREAD_STATE_SLEEPING, 374 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() 375 JVMTI_THREAD_STATE_WAITING + 376 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + 377 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, 378 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) 379 JVMTI_THREAD_STATE_WAITING + 380 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + 381 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, 382 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() 383 JVMTI_THREAD_STATE_WAITING + 384 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + 385 JVMTI_THREAD_STATE_PARKED, 386 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) 387 JVMTI_THREAD_STATE_WAITING + 388 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + 389 JVMTI_THREAD_STATE_PARKED, 390 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block 391 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, 392 TERMINATED = JVMTI_THREAD_STATE_TERMINATED 393 }; 394 // Write thread status info to threadStatus field of java.lang.Thread. 395 static void set_thread_status(oop java_thread_oop, ThreadStatus status); 396 // Read thread status info from threadStatus field of java.lang.Thread. 397 static ThreadStatus get_thread_status(oop java_thread_oop); 398 399 static const char* thread_status_name(oop java_thread_oop); 400 401 // Debugging 402 friend class JavaClasses; 403 }; 404 405 // Interface to java.lang.ThreadGroup objects 406 407 class java_lang_ThreadGroup : AllStatic { 408 private: 409 static int _parent_offset; 410 static int _name_offset; 411 static int _threads_offset; 412 static int _groups_offset; 413 static int _maxPriority_offset; 414 static int _destroyed_offset; 415 static int _daemon_offset; 416 static int _nthreads_offset; 417 static int _ngroups_offset; 418 419 static void compute_offsets(); 420 421 public: 422 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 423 424 // parent ThreadGroup 425 static oop parent(oop java_thread_group); 426 // name 427 static const char* name(oop java_thread_group); 428 // ("name as oop" accessor is not necessary) 429 // Number of threads in group 430 static int nthreads(oop java_thread_group); 431 // threads 432 static objArrayOop threads(oop java_thread_group); 433 // Number of threads in group 434 static int ngroups(oop java_thread_group); 435 // groups 436 static objArrayOop groups(oop java_thread_group); 437 // maxPriority in group 438 static ThreadPriority maxPriority(oop java_thread_group); 439 // Destroyed 440 static bool is_destroyed(oop java_thread_group); 441 // Daemon 442 static bool is_daemon(oop java_thread_group); 443 // Debugging 444 friend class JavaClasses; 445 }; 446 447 448 449 // Interface to java.lang.Throwable objects 450 451 class java_lang_Throwable: AllStatic { 452 friend class BacktraceBuilder; 453 friend class BacktraceIterator; 454 455 private: 456 // Offsets 457 enum { 458 hc_backtrace_offset = 0, 459 hc_detailMessage_offset = 1, 460 hc_cause_offset = 2, // New since 1.4 461 hc_stackTrace_offset = 3 // New since 1.4 462 }; 463 // Trace constants 464 enum { 465 trace_methods_offset = 0, 466 trace_bcis_offset = 1, 467 trace_mirrors_offset = 2, 468 trace_names_offset = 3, 469 trace_next_offset = 4, 470 trace_size = 5, 471 trace_chunk_size = 32 472 }; 473 474 static int backtrace_offset; 475 static int detailMessage_offset; 476 static int stackTrace_offset; 477 static int depth_offset; 478 static int static_unassigned_stacktrace_offset; 479 480 // StackTrace (programmatic access, new since 1.4) 481 static void clear_stacktrace(oop throwable); 482 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) 483 static void set_stacktrace(oop throwable, oop st_element_array); 484 static oop unassigned_stacktrace(); 485 486 public: 487 // Backtrace 488 static oop backtrace(oop throwable); 489 static void set_backtrace(oop throwable, oop value); 490 static int depth(oop throwable); 491 static void set_depth(oop throwable, int value); 492 // Needed by JVMTI to filter out this internal field. 493 static int get_backtrace_offset() { return backtrace_offset;} 494 static int get_detailMessage_offset() { return detailMessage_offset;} 495 // Message 496 static oop message(oop throwable); 497 static void set_message(oop throwable, oop value); 498 static Symbol* detail_message(oop throwable); 499 static void print_stack_element(outputStream *st, const methodHandle& method, int bci); 500 static void print_stack_usage(Handle stream); 501 502 static void compute_offsets(); 503 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 504 505 // Allocate space for backtrace (created but stack trace not filled in) 506 static void allocate_backtrace(Handle throwable, TRAPS); 507 // Fill in current stack trace for throwable with preallocated backtrace (no GC) 508 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); 509 // Fill in current stack trace, can cause GC 510 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS); 511 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle()); 512 // Programmatic access to stack trace 513 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS); 514 // Printing 515 static void print(oop throwable, outputStream* st); 516 static void print_stack_trace(Handle throwable, outputStream* st); 517 static void java_printStackTrace(Handle throwable, TRAPS); 518 // Debugging 519 friend class JavaClasses; 520 }; 521 522 523 // Interface to java.lang.reflect.AccessibleObject objects 524 525 class java_lang_reflect_AccessibleObject: AllStatic { 526 private: 527 // Note that to reduce dependencies on the JDK we compute these 528 // offsets at run-time. 529 static int override_offset; 530 531 static void compute_offsets(); 532 533 public: 534 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 535 536 // Accessors 537 static jboolean override(oop reflect); 538 static void set_override(oop reflect, jboolean value); 539 540 // Debugging 541 friend class JavaClasses; 542 }; 543 544 545 // Interface to java.lang.reflect.Method objects 546 547 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { 548 private: 549 // Note that to reduce dependencies on the JDK we compute these 550 // offsets at run-time. 551 static int clazz_offset; 552 static int name_offset; 553 static int returnType_offset; 554 static int parameterTypes_offset; 555 static int exceptionTypes_offset; 556 static int slot_offset; 557 static int modifiers_offset; 558 static int signature_offset; 559 static int annotations_offset; 560 static int parameter_annotations_offset; 561 static int annotation_default_offset; 562 static int type_annotations_offset; 563 564 static void compute_offsets(); 565 566 public: 567 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 568 569 // Allocation 570 static Handle create(TRAPS); 571 572 // Accessors 573 static oop clazz(oop reflect); 574 static void set_clazz(oop reflect, oop value); 575 576 static oop name(oop method); 577 static void set_name(oop method, oop value); 578 579 static oop return_type(oop method); 580 static void set_return_type(oop method, oop value); 581 582 static oop parameter_types(oop method); 583 static void set_parameter_types(oop method, oop value); 584 585 static oop exception_types(oop method); 586 static void set_exception_types(oop method, oop value); 587 588 static int slot(oop reflect); 589 static void set_slot(oop reflect, int value); 590 591 static int modifiers(oop method); 592 static void set_modifiers(oop method, int value); 593 594 static bool has_signature_field(); 595 static oop signature(oop method); 596 static void set_signature(oop method, oop value); 597 598 static bool has_annotations_field(); 599 static oop annotations(oop method); 600 static void set_annotations(oop method, oop value); 601 602 static bool has_parameter_annotations_field(); 603 static oop parameter_annotations(oop method); 604 static void set_parameter_annotations(oop method, oop value); 605 606 static bool has_annotation_default_field(); 607 static oop annotation_default(oop method); 608 static void set_annotation_default(oop method, oop value); 609 610 static bool has_type_annotations_field(); 611 static oop type_annotations(oop method); 612 static void set_type_annotations(oop method, oop value); 613 614 // Debugging 615 friend class JavaClasses; 616 }; 617 618 619 // Interface to java.lang.reflect.Constructor objects 620 621 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { 622 private: 623 // Note that to reduce dependencies on the JDK we compute these 624 // offsets at run-time. 625 static int clazz_offset; 626 static int parameterTypes_offset; 627 static int exceptionTypes_offset; 628 static int slot_offset; 629 static int modifiers_offset; 630 static int signature_offset; 631 static int annotations_offset; 632 static int parameter_annotations_offset; 633 static int type_annotations_offset; 634 635 static void compute_offsets(); 636 637 public: 638 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 639 640 // Allocation 641 static Handle create(TRAPS); 642 643 // Accessors 644 static oop clazz(oop reflect); 645 static void set_clazz(oop reflect, oop value); 646 647 static oop parameter_types(oop constructor); 648 static void set_parameter_types(oop constructor, oop value); 649 650 static oop exception_types(oop constructor); 651 static void set_exception_types(oop constructor, oop value); 652 653 static int slot(oop reflect); 654 static void set_slot(oop reflect, int value); 655 656 static int modifiers(oop constructor); 657 static void set_modifiers(oop constructor, int value); 658 659 static bool has_signature_field(); 660 static oop signature(oop constructor); 661 static void set_signature(oop constructor, oop value); 662 663 static bool has_annotations_field(); 664 static oop annotations(oop constructor); 665 static void set_annotations(oop constructor, oop value); 666 667 static bool has_parameter_annotations_field(); 668 static oop parameter_annotations(oop method); 669 static void set_parameter_annotations(oop method, oop value); 670 671 static bool has_type_annotations_field(); 672 static oop type_annotations(oop constructor); 673 static void set_type_annotations(oop constructor, oop value); 674 675 // Debugging 676 friend class JavaClasses; 677 }; 678 679 680 // Interface to java.lang.reflect.Field objects 681 682 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { 683 private: 684 // Note that to reduce dependencies on the JDK we compute these 685 // offsets at run-time. 686 static int clazz_offset; 687 static int name_offset; 688 static int type_offset; 689 static int slot_offset; 690 static int modifiers_offset; 691 static int signature_offset; 692 static int annotations_offset; 693 static int type_annotations_offset; 694 695 static void compute_offsets(); 696 697 public: 698 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 699 700 // Allocation 701 static Handle create(TRAPS); 702 703 // Accessors 704 static oop clazz(oop reflect); 705 static void set_clazz(oop reflect, oop value); 706 707 static oop name(oop field); 708 static void set_name(oop field, oop value); 709 710 static oop type(oop field); 711 static void set_type(oop field, oop value); 712 713 static int slot(oop reflect); 714 static void set_slot(oop reflect, int value); 715 716 static int modifiers(oop field); 717 static void set_modifiers(oop field, int value); 718 719 static bool has_signature_field(); 720 static oop signature(oop constructor); 721 static void set_signature(oop constructor, oop value); 722 723 static bool has_annotations_field(); 724 static oop annotations(oop constructor); 725 static void set_annotations(oop constructor, oop value); 726 727 static bool has_parameter_annotations_field(); 728 static oop parameter_annotations(oop method); 729 static void set_parameter_annotations(oop method, oop value); 730 731 static bool has_annotation_default_field(); 732 static oop annotation_default(oop method); 733 static void set_annotation_default(oop method, oop value); 734 735 static bool has_type_annotations_field(); 736 static oop type_annotations(oop field); 737 static void set_type_annotations(oop field, oop value); 738 739 // Debugging 740 friend class JavaClasses; 741 }; 742 743 class java_lang_reflect_Parameter { 744 private: 745 // Note that to reduce dependencies on the JDK we compute these 746 // offsets at run-time. 747 static int name_offset; 748 static int modifiers_offset; 749 static int index_offset; 750 static int executable_offset; 751 752 static void compute_offsets(); 753 754 public: 755 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 756 757 // Allocation 758 static Handle create(TRAPS); 759 760 // Accessors 761 static oop name(oop field); 762 static void set_name(oop field, oop value); 763 764 static int index(oop reflect); 765 static void set_index(oop reflect, int value); 766 767 static int modifiers(oop reflect); 768 static void set_modifiers(oop reflect, int value); 769 770 static oop executable(oop constructor); 771 static void set_executable(oop constructor, oop value); 772 773 friend class JavaClasses; 774 }; 775 776 #define MODULE_INJECTED_FIELDS(macro) \ 777 macro(java_lang_Module, module_entry, intptr_signature, false) 778 779 class java_lang_Module { 780 private: 781 static int loader_offset; 782 static int name_offset; 783 static int _module_entry_offset; 784 static void compute_offsets(); 785 786 public: 787 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 788 789 // Allocation 790 static Handle create(Handle loader, Handle module_name, TRAPS); 791 792 // Testers 793 static bool is_instance(oop obj); 794 795 // Accessors 796 static oop loader(oop module); 797 static void set_loader(oop module, oop value); 798 799 static oop name(oop module); 800 static void set_name(oop module, oop value); 801 802 static ModuleEntry* module_entry(oop module); 803 static void set_module_entry(oop module, ModuleEntry* module_entry); 804 805 friend class JavaClasses; 806 }; 807 808 // Interface to jdk.internal.reflect.ConstantPool objects 809 class reflect_ConstantPool { 810 private: 811 // Note that to reduce dependencies on the JDK we compute these 812 // offsets at run-time. 813 static int _oop_offset; 814 815 static void compute_offsets(); 816 817 public: 818 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 819 820 // Allocation 821 static Handle create(TRAPS); 822 823 // Accessors 824 static void set_cp(oop reflect, ConstantPool* value); 825 static int oop_offset() { 826 return _oop_offset; 827 } 828 829 static ConstantPool* get_cp(oop reflect); 830 831 // Debugging 832 friend class JavaClasses; 833 }; 834 835 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects 836 class reflect_UnsafeStaticFieldAccessorImpl { 837 private: 838 static int _base_offset; 839 static void compute_offsets(); 840 841 public: 842 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 843 844 static int base_offset() { 845 return _base_offset; 846 } 847 848 // Debugging 849 friend class JavaClasses; 850 }; 851 852 // Interface to java.lang primitive type boxing objects: 853 // - java.lang.Boolean 854 // - java.lang.Character 855 // - java.lang.Float 856 // - java.lang.Double 857 // - java.lang.Byte 858 // - java.lang.Short 859 // - java.lang.Integer 860 // - java.lang.Long 861 862 // This could be separated out into 8 individual classes. 863 864 class java_lang_boxing_object: AllStatic { 865 private: 866 enum { 867 hc_value_offset = 0 868 }; 869 static int value_offset; 870 static int long_value_offset; 871 872 static oop initialize_and_allocate(BasicType type, TRAPS); 873 public: 874 // Allocation. Returns a boxed value, or NULL for invalid type. 875 static oop create(BasicType type, jvalue* value, TRAPS); 876 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. 877 static BasicType get_value(oop box, jvalue* value); 878 static BasicType set_value(oop box, jvalue* value); 879 static BasicType basic_type(oop box); 880 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } 881 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } 882 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } 883 static void print(BasicType type, jvalue* value, outputStream* st); 884 885 static int value_offset_in_bytes(BasicType type) { 886 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : 887 value_offset; 888 } 889 890 // Debugging 891 friend class JavaClasses; 892 }; 893 894 895 896 // Interface to java.lang.ref.Reference objects 897 898 class java_lang_ref_Reference: AllStatic { 899 public: 900 enum { 901 hc_referent_offset = 0, 902 hc_queue_offset = 1, 903 hc_next_offset = 2, 904 hc_discovered_offset = 3 // Is not last, see SoftRefs. 905 }; 906 907 static int referent_offset; 908 static int queue_offset; 909 static int next_offset; 910 static int discovered_offset; 911 912 // Accessors 913 static inline oop referent(oop ref); 914 static inline void set_referent(oop ref, oop value); 915 static inline void set_referent_raw(oop ref, oop value); 916 static inline HeapWord* referent_addr_raw(oop ref); 917 static inline oop next(oop ref); 918 static inline void set_next(oop ref, oop value); 919 static inline void set_next_raw(oop ref, oop value); 920 static inline HeapWord* next_addr_raw(oop ref); 921 static inline oop discovered(oop ref); 922 static inline void set_discovered(oop ref, oop value); 923 static inline void set_discovered_raw(oop ref, oop value); 924 static inline HeapWord* discovered_addr_raw(oop ref); 925 static inline oop queue(oop ref); 926 static inline void set_queue(oop ref, oop value); 927 static bool is_referent_field(oop obj, ptrdiff_t offset); 928 static inline bool is_phantom(oop ref); 929 }; 930 931 932 // Interface to java.lang.ref.SoftReference objects 933 934 class java_lang_ref_SoftReference: public java_lang_ref_Reference { 935 public: 936 static int timestamp_offset; 937 static int static_clock_offset; 938 939 // Accessors 940 static jlong timestamp(oop ref); 941 942 // Accessors for statics 943 static jlong clock(); 944 static void set_clock(jlong value); 945 946 static void compute_offsets(); 947 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 948 }; 949 950 // Interface to java.lang.invoke.MethodHandle objects 951 952 class MethodHandleEntry; 953 954 class java_lang_invoke_MethodHandle: AllStatic { 955 friend class JavaClasses; 956 957 private: 958 static int _type_offset; // the MethodType of this MH 959 static int _form_offset; // the LambdaForm of this MH 960 961 static void compute_offsets(); 962 963 public: 964 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 965 966 // Accessors 967 static oop type(oop mh); 968 static void set_type(oop mh, oop mtype); 969 970 static oop form(oop mh); 971 static void set_form(oop mh, oop lform); 972 973 // Testers 974 static bool is_subclass(Klass* klass) { 975 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass()); 976 } 977 static bool is_instance(oop obj); 978 979 // Accessors for code generation: 980 static int type_offset_in_bytes() { return _type_offset; } 981 static int form_offset_in_bytes() { return _form_offset; } 982 }; 983 984 // Interface to java.lang.invoke.DirectMethodHandle objects 985 986 class java_lang_invoke_DirectMethodHandle: AllStatic { 987 friend class JavaClasses; 988 989 private: 990 static int _member_offset; // the MemberName of this DMH 991 992 static void compute_offsets(); 993 994 public: 995 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 996 997 // Accessors 998 static oop member(oop mh); 999 1000 // Testers 1001 static bool is_subclass(Klass* klass) { 1002 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass()); 1003 } 1004 static bool is_instance(oop obj); 1005 1006 // Accessors for code generation: 1007 static int member_offset_in_bytes() { return _member_offset; } 1008 }; 1009 1010 // Interface to java.lang.invoke.LambdaForm objects 1011 // (These are a private interface for managing adapter code generation.) 1012 1013 class java_lang_invoke_LambdaForm: AllStatic { 1014 friend class JavaClasses; 1015 1016 private: 1017 static int _vmentry_offset; // type is MemberName 1018 1019 static void compute_offsets(); 1020 1021 public: 1022 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1023 1024 // Accessors 1025 static oop vmentry(oop lform); 1026 static void set_vmentry(oop lform, oop invoker); 1027 1028 // Testers 1029 static bool is_subclass(Klass* klass) { 1030 return SystemDictionary::LambdaForm_klass() != NULL && 1031 klass->is_subclass_of(SystemDictionary::LambdaForm_klass()); 1032 } 1033 static bool is_instance(oop obj); 1034 1035 // Accessors for code generation: 1036 static int vmentry_offset_in_bytes() { return _vmentry_offset; } 1037 }; 1038 1039 1040 // Interface to java.lang.invoke.MemberName objects 1041 // (These are a private interface for Java code to query the class hierarchy.) 1042 1043 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \ 1044 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \ 1045 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false) 1046 1047 class java_lang_invoke_ResolvedMethodName : AllStatic { 1048 friend class JavaClasses; 1049 1050 static int _vmtarget_offset; 1051 static int _vmholder_offset; 1052 1053 static void compute_offsets(); 1054 public: 1055 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1056 1057 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } 1058 1059 static Method* vmtarget(oop resolved_method); 1060 static void set_vmtarget(oop resolved_method, Method* method); 1061 1062 // find or create resolved member name 1063 static oop find_resolved_method(const methodHandle& m, TRAPS); 1064 1065 static bool is_instance(oop resolved_method); 1066 }; 1067 1068 1069 #define MEMBERNAME_INJECTED_FIELDS(macro) \ 1070 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) 1071 1072 1073 class java_lang_invoke_MemberName: AllStatic { 1074 friend class JavaClasses; 1075 1076 private: 1077 // From java.lang.invoke.MemberName: 1078 // private Class<?> clazz; // class in which the method is defined 1079 // private String name; // may be null if not yet materialized 1080 // private Object type; // may be null if not yet materialized 1081 // private int flags; // modifier bits; see reflect.Modifier 1082 // private ResolvedMethodName method; // holds VM-specific target value 1083 // private intptr_t vmindex; // member index within class or interface 1084 static int _clazz_offset; 1085 static int _name_offset; 1086 static int _type_offset; 1087 static int _flags_offset; 1088 static int _method_offset; 1089 static int _vmindex_offset; 1090 1091 static void compute_offsets(); 1092 1093 public: 1094 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1095 // Accessors 1096 static oop clazz(oop mname); 1097 static void set_clazz(oop mname, oop clazz); 1098 1099 static oop type(oop mname); 1100 static void set_type(oop mname, oop type); 1101 1102 static oop name(oop mname); 1103 static void set_name(oop mname, oop name); 1104 1105 static int flags(oop mname); 1106 static void set_flags(oop mname, int flags); 1107 1108 // Link through ResolvedMethodName field to get Method* 1109 static Method* vmtarget(oop mname); 1110 static void set_method(oop mname, oop method); 1111 1112 static intptr_t vmindex(oop mname); 1113 static void set_vmindex(oop mname, intptr_t index); 1114 1115 // Testers 1116 static bool is_subclass(Klass* klass) { 1117 return klass->is_subclass_of(SystemDictionary::MemberName_klass()); 1118 } 1119 static bool is_instance(oop obj); 1120 1121 static bool is_method(oop obj); 1122 1123 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): 1124 enum { 1125 MN_IS_METHOD = 0x00010000, // method (not constructor) 1126 MN_IS_CONSTRUCTOR = 0x00020000, // constructor 1127 MN_IS_FIELD = 0x00040000, // field 1128 MN_IS_TYPE = 0x00080000, // nested type 1129 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected 1130 MN_REFERENCE_KIND_SHIFT = 24, // refKind 1131 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, 1132 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers: 1133 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes 1134 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces 1135 }; 1136 1137 // Accessors for code generation: 1138 static int clazz_offset_in_bytes() { return _clazz_offset; } 1139 static int type_offset_in_bytes() { return _type_offset; } 1140 static int name_offset_in_bytes() { return _name_offset; } 1141 static int flags_offset_in_bytes() { return _flags_offset; } 1142 static int method_offset_in_bytes() { return _method_offset; } 1143 static int vmindex_offset_in_bytes() { return _vmindex_offset; } 1144 }; 1145 1146 1147 // Interface to java.lang.invoke.MethodType objects 1148 1149 class java_lang_invoke_MethodType: AllStatic { 1150 friend class JavaClasses; 1151 1152 private: 1153 static int _rtype_offset; 1154 static int _ptypes_offset; 1155 1156 static void compute_offsets(); 1157 1158 public: 1159 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1160 // Accessors 1161 static oop rtype(oop mt); 1162 static objArrayOop ptypes(oop mt); 1163 1164 static oop ptype(oop mt, int index); 1165 static int ptype_count(oop mt); 1166 1167 static int ptype_slot_count(oop mt); // extra counts for long/double 1168 static int rtype_slot_count(oop mt); // extra counts for long/double 1169 1170 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS); 1171 static void print_signature(oop mt, outputStream* st); 1172 1173 static bool is_instance(oop obj); 1174 1175 static bool equals(oop mt1, oop mt2); 1176 1177 // Accessors for code generation: 1178 static int rtype_offset_in_bytes() { return _rtype_offset; } 1179 static int ptypes_offset_in_bytes() { return _ptypes_offset; } 1180 }; 1181 1182 1183 // Interface to java.lang.invoke.CallSite objects 1184 1185 class java_lang_invoke_CallSite: AllStatic { 1186 friend class JavaClasses; 1187 1188 private: 1189 static int _target_offset; 1190 static int _context_offset; 1191 1192 static void compute_offsets(); 1193 1194 public: 1195 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1196 // Accessors 1197 static oop target( oop site); 1198 static void set_target( oop site, oop target); 1199 static void set_target_volatile( oop site, oop target); 1200 1201 static oop context(oop site); 1202 1203 // Testers 1204 static bool is_subclass(Klass* klass) { 1205 return klass->is_subclass_of(SystemDictionary::CallSite_klass()); 1206 } 1207 static bool is_instance(oop obj); 1208 1209 // Accessors for code generation: 1210 static int target_offset_in_bytes() { return _target_offset; } 1211 }; 1212 1213 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects 1214 1215 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \ 1216 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) 1217 1218 class DependencyContext; 1219 1220 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic { 1221 friend class JavaClasses; 1222 1223 private: 1224 static int _vmdependencies_offset; 1225 1226 static void compute_offsets(); 1227 1228 public: 1229 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1230 // Accessors 1231 static DependencyContext vmdependencies(oop context); 1232 1233 // Testers 1234 static bool is_subclass(Klass* klass) { 1235 return klass->is_subclass_of(SystemDictionary::Context_klass()); 1236 } 1237 static bool is_instance(oop obj); 1238 }; 1239 1240 // Interface to java.security.AccessControlContext objects 1241 1242 class java_security_AccessControlContext: AllStatic { 1243 private: 1244 // Note that for this class the layout changed between JDK1.2 and JDK1.3, 1245 // so we compute the offsets at startup rather than hard-wiring them. 1246 static int _context_offset; 1247 static int _privilegedContext_offset; 1248 static int _isPrivileged_offset; 1249 static int _isAuthorized_offset; 1250 1251 static void compute_offsets(); 1252 public: 1253 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1254 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); 1255 1256 static bool is_authorized(Handle context); 1257 1258 // Debugging/initialization 1259 friend class JavaClasses; 1260 }; 1261 1262 1263 // Interface to java.lang.ClassLoader objects 1264 1265 #define CLASSLOADER_INJECTED_FIELDS(macro) \ 1266 macro(java_lang_ClassLoader, loader_data, intptr_signature, false) 1267 1268 class java_lang_ClassLoader : AllStatic { 1269 private: 1270 static int _loader_data_offset; 1271 static bool offsets_computed; 1272 static int parent_offset; 1273 static int parallelCapable_offset; 1274 static int name_offset; 1275 static int nameAndId_offset; 1276 static int unnamedModule_offset; 1277 1278 public: 1279 static void compute_offsets(); 1280 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1281 1282 static ClassLoaderData* loader_data(oop loader); 1283 static ClassLoaderData* cmpxchg_loader_data(ClassLoaderData* new_data, oop loader, ClassLoaderData* expected_data); 1284 1285 static oop parent(oop loader); 1286 static oop name(oop loader); 1287 static oop nameAndId(oop loader); 1288 static bool isAncestor(oop loader, oop cl); 1289 1290 // Support for parallelCapable field 1291 static bool parallelCapable(oop the_class_mirror); 1292 1293 static bool is_trusted_loader(oop loader); 1294 1295 // Return true if this is one of the class loaders associated with 1296 // the generated bytecodes for reflection. 1297 static bool is_reflection_class_loader(oop loader); 1298 1299 // Fix for 4474172 1300 static oop non_reflection_class_loader(oop loader); 1301 1302 // Testers 1303 static bool is_subclass(Klass* klass) { 1304 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass()); 1305 } 1306 static bool is_instance(oop obj); 1307 1308 static oop unnamedModule(oop loader); 1309 1310 // Debugging 1311 friend class JavaClasses; 1312 friend class ClassFileParser; // access to number_of_fake_fields 1313 }; 1314 1315 1316 // Interface to java.lang.System objects 1317 1318 class java_lang_System : AllStatic { 1319 private: 1320 static int static_in_offset; 1321 static int static_out_offset; 1322 static int static_err_offset; 1323 static int static_security_offset; 1324 1325 public: 1326 static int in_offset_in_bytes(); 1327 static int out_offset_in_bytes(); 1328 static int err_offset_in_bytes(); 1329 1330 static bool has_security_manager(); 1331 1332 static void compute_offsets(); 1333 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1334 1335 // Debugging 1336 friend class JavaClasses; 1337 }; 1338 1339 1340 // Interface to java.lang.StackTraceElement objects 1341 1342 class java_lang_StackTraceElement: AllStatic { 1343 private: 1344 static int declaringClassObject_offset; 1345 static int classLoaderName_offset; 1346 static int moduleName_offset; 1347 static int moduleVersion_offset; 1348 static int declaringClass_offset; 1349 static int methodName_offset; 1350 static int fileName_offset; 1351 static int lineNumber_offset; 1352 1353 // Setters 1354 static void set_classLoaderName(oop element, oop value); 1355 static void set_moduleName(oop element, oop value); 1356 static void set_moduleVersion(oop element, oop value); 1357 static void set_declaringClass(oop element, oop value); 1358 static void set_methodName(oop element, oop value); 1359 static void set_fileName(oop element, oop value); 1360 static void set_lineNumber(oop element, int value); 1361 static void set_declaringClassObject(oop element, oop value); 1362 1363 public: 1364 // Create an instance of StackTraceElement 1365 static oop create(const methodHandle& method, int bci, TRAPS); 1366 1367 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method, 1368 int version, int bci, Symbol* name, TRAPS); 1369 1370 static void compute_offsets(); 1371 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1372 1373 // Debugging 1374 friend class JavaClasses; 1375 }; 1376 1377 1378 class Backtrace: AllStatic { 1379 public: 1380 // Helper backtrace functions to store bci|version together. 1381 static int merge_bci_and_version(int bci, int version); 1382 static int merge_mid_and_cpref(int mid, int cpref); 1383 static int bci_at(unsigned int merged); 1384 static int version_at(unsigned int merged); 1385 static int mid_at(unsigned int merged); 1386 static int cpref_at(unsigned int merged); 1387 static int get_line_number(const methodHandle& method, int bci); 1388 static Symbol* get_source_file_name(InstanceKlass* holder, int version); 1389 1390 // Debugging 1391 friend class JavaClasses; 1392 }; 1393 1394 // Interface to java.lang.StackFrameInfo objects 1395 1396 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \ 1397 macro(java_lang_StackFrameInfo, version, short_signature, false) 1398 1399 class java_lang_StackFrameInfo: AllStatic { 1400 private: 1401 static int _memberName_offset; 1402 static int _bci_offset; 1403 static int _version_offset; 1404 1405 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS); 1406 1407 public: 1408 // Setters 1409 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS); 1410 static void set_bci(oop info, int value); 1411 1412 static void set_version(oop info, short value); 1413 1414 static void compute_offsets(); 1415 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1416 1417 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS); 1418 1419 // Debugging 1420 friend class JavaClasses; 1421 }; 1422 1423 class java_lang_LiveStackFrameInfo: AllStatic { 1424 private: 1425 static int _monitors_offset; 1426 static int _locals_offset; 1427 static int _operands_offset; 1428 static int _mode_offset; 1429 1430 public: 1431 static void set_monitors(oop info, oop value); 1432 static void set_locals(oop info, oop value); 1433 static void set_operands(oop info, oop value); 1434 static void set_mode(oop info, int value); 1435 1436 static void compute_offsets(); 1437 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1438 1439 // Debugging 1440 friend class JavaClasses; 1441 }; 1442 1443 // Interface to java.lang.AssertionStatusDirectives objects 1444 1445 class java_lang_AssertionStatusDirectives: AllStatic { 1446 private: 1447 static int classes_offset; 1448 static int classEnabled_offset; 1449 static int packages_offset; 1450 static int packageEnabled_offset; 1451 static int deflt_offset; 1452 1453 public: 1454 // Setters 1455 static void set_classes(oop obj, oop val); 1456 static void set_classEnabled(oop obj, oop val); 1457 static void set_packages(oop obj, oop val); 1458 static void set_packageEnabled(oop obj, oop val); 1459 static void set_deflt(oop obj, bool val); 1460 1461 static void compute_offsets(); 1462 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1463 1464 // Debugging 1465 friend class JavaClasses; 1466 }; 1467 1468 1469 class java_nio_Buffer: AllStatic { 1470 private: 1471 static int _limit_offset; 1472 1473 public: 1474 static int limit_offset(); 1475 static void compute_offsets(); 1476 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1477 }; 1478 1479 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { 1480 private: 1481 static int _owner_offset; 1482 public: 1483 static void compute_offsets(); 1484 static oop get_owner_threadObj(oop obj); 1485 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1486 }; 1487 1488 class java_lang_Integer_IntegerCache: AllStatic { 1489 private: 1490 static int _archivedCache_offset; 1491 public: 1492 static int archivedCache_offset() { return _archivedCache_offset; } 1493 static void compute_offsets(); 1494 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1495 }; 1496 1497 class jdk_internal_module_ArchivedModuleGraph: AllStatic { 1498 private: 1499 static int _archivedSystemModules_offset; 1500 static int _archivedModuleFinder_offset; 1501 static int _archivedMainModule_offset; 1502 static int _archivedConfiguration_offset; 1503 public: 1504 static int archivedSystemModules_offset() { return _archivedSystemModules_offset; } 1505 static int archivedModuleFinder_offset() { return _archivedModuleFinder_offset; } 1506 static int archivedMainModule_offset() { return _archivedMainModule_offset; } 1507 static int archivedConfiguration_offset() { return _archivedConfiguration_offset; } 1508 static void compute_offsets(); 1509 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1510 }; 1511 1512 class java_lang_module_Configuration: AllStatic { 1513 private: 1514 static int _EMPTY_CONFIGURATION_offset; 1515 public: 1516 static int EMPTY_CONFIGURATION_offset() { return _EMPTY_CONFIGURATION_offset; } 1517 static void compute_offsets(); 1518 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1519 }; 1520 1521 class java_util_ImmutableCollections_ListN : AllStatic { 1522 private: 1523 static int _EMPTY_LIST_offset; 1524 public: 1525 static int EMPTY_LIST_offset() { return _EMPTY_LIST_offset; } 1526 static void compute_offsets(); 1527 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1528 }; 1529 1530 class java_util_ImmutableCollections_SetN : AllStatic { 1531 private: 1532 static int _EMPTY_SET_offset; 1533 public: 1534 static int EMPTY_SET_offset() { return _EMPTY_SET_offset; } 1535 static void compute_offsets(); 1536 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1537 }; 1538 1539 class java_util_ImmutableCollections_MapN : AllStatic { 1540 private: 1541 static int _EMPTY_MAP_offset; 1542 public: 1543 static int EMPTY_MAP_offset() { return _EMPTY_MAP_offset; } 1544 static void compute_offsets(); 1545 static void serialize(SerializeClosure* f) NOT_CDS_RETURN; 1546 }; 1547 1548 // Use to declare fields that need to be injected into Java classes 1549 // for the JVM to use. The name_index and signature_index are 1550 // declared in vmSymbols. The may_be_java flag is used to declare 1551 // fields that might already exist in Java but should be injected if 1552 // they don't. Otherwise the field is unconditionally injected and 1553 // the JVM uses the injected one. This is to ensure that name 1554 // collisions don't occur. In general may_be_java should be false 1555 // unless there's a good reason. 1556 1557 class InjectedField { 1558 public: 1559 const SystemDictionary::WKID klass_id; 1560 const vmSymbols::SID name_index; 1561 const vmSymbols::SID signature_index; 1562 const bool may_be_java; 1563 1564 1565 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); } 1566 Symbol* name() const { return lookup_symbol(name_index); } 1567 Symbol* signature() const { return lookup_symbol(signature_index); } 1568 1569 int compute_offset(); 1570 1571 // Find the Symbol for this index 1572 static Symbol* lookup_symbol(int symbol_index) { 1573 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index); 1574 } 1575 }; 1576 1577 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \ 1578 klass##_##name##_enum, 1579 1580 #define ALL_INJECTED_FIELDS(macro) \ 1581 CLASS_INJECTED_FIELDS(macro) \ 1582 CLASSLOADER_INJECTED_FIELDS(macro) \ 1583 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \ 1584 MEMBERNAME_INJECTED_FIELDS(macro) \ 1585 CALLSITECONTEXT_INJECTED_FIELDS(macro) \ 1586 STACKFRAMEINFO_INJECTED_FIELDS(macro) \ 1587 MODULE_INJECTED_FIELDS(macro) 1588 1589 // Interface to hard-coded offset checking 1590 1591 class JavaClasses : AllStatic { 1592 private: 1593 1594 static InjectedField _injected_fields[]; 1595 1596 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; 1597 public: 1598 enum InjectedFieldID { 1599 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM) 1600 MAX_enum 1601 }; 1602 1603 static int compute_injected_offset(InjectedFieldID id); 1604 1605 static void compute_hard_coded_offsets(); 1606 static void compute_offsets(); 1607 static void check_offsets() PRODUCT_RETURN; 1608 1609 static InjectedField* get_injected(Symbol* class_name, int* field_count); 1610 }; 1611 1612 #undef DECLARE_INJECTED_FIELD_ENUM 1613 1614 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP