1 /* 2 * Copyright (c) 1997, 2019, 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_CLASSFILE_JAVACLASSES_HPP 26 #define SHARE_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 33 // Interface for manipulating the basic Java classes. 34 // 35 // All dependencies on layout of actual Java classes should be kept here. 36 // If the layout of any of the classes above changes the offsets must be adjusted. 37 // 38 // For most classes we hardwire the offsets for performance reasons. In certain 39 // cases (e.g. java.security.AccessControlContext) we compute the offsets at 40 // startup since the layout here differs between JDK1.2 and JDK1.3. 41 // 42 // Note that fields (static and non-static) are arranged with oops before non-oops 43 // on a per class basis. The offsets below have to reflect this ordering. 44 // 45 // When editing the layouts please update the check_offset verification code 46 // correspondingly. The names in the enums must be identical to the actual field 47 // names in order for the verification code to work. 48 49 #define BASIC_JAVA_CLASSES_DO_PART1(f) \ 50 f(java_lang_Class) \ 51 f(java_lang_String) \ 52 //end 53 54 #define BASIC_JAVA_CLASSES_DO_PART2(f) \ 55 f(java_lang_System) \ 56 f(java_lang_ClassLoader) \ 57 f(java_lang_Throwable) \ 58 f(java_lang_Thread) \ 59 f(java_lang_ThreadGroup) \ 60 f(java_lang_AssertionStatusDirectives) \ 61 f(java_lang_ref_SoftReference) \ 62 f(java_lang_invoke_MethodHandle) \ 63 f(java_lang_invoke_DirectMethodHandle) \ 64 f(java_lang_invoke_MemberName) \ 65 f(java_lang_invoke_ResolvedMethodName) \ 66 f(java_lang_invoke_LambdaForm) \ 67 f(java_lang_invoke_MethodType) \ 68 f(java_lang_invoke_CallSite) \ 69 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \ 70 f(java_security_AccessControlContext) \ 71 f(java_lang_reflect_AccessibleObject) \ 72 f(java_lang_reflect_Method) \ 73 f(java_lang_reflect_Constructor) \ 74 f(java_lang_reflect_Field) \ 75 f(java_nio_Buffer) \ 76 f(reflect_ConstantPool) \ 77 f(reflect_UnsafeStaticFieldAccessorImpl) \ 78 f(java_lang_reflect_Parameter) \ 79 f(java_lang_Module) \ 80 f(java_lang_StackTraceElement) \ 81 f(java_lang_StackFrameInfo) \ 82 f(java_lang_LiveStackFrameInfo) \ 83 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \ 84 f(jdk_internal_misc_UnsafeConstants) \ 85 //end 86 87 #define BASIC_JAVA_CLASSES_DO(f) \ 88 BASIC_JAVA_CLASSES_DO_PART1(f) \ 89 BASIC_JAVA_CLASSES_DO_PART2(f) 90 91 // Interface to java.lang.String objects 92 93 class java_lang_String : AllStatic { 94 private: 95 static int value_offset; 96 static int hash_offset; 97 static int hashIsZero_offset; 98 static int coder_offset; 99 100 static bool initialized; 101 102 static Handle basic_create(int length, bool byte_arr, TRAPS); 103 104 static inline void set_coder(oop string, jbyte coder); 105 106 public: 107 108 // Coders 109 enum Coder { 110 CODER_LATIN1 = 0, 111 CODER_UTF16 = 1 112 }; 113 114 static void compute_offsets(); 115 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 116 117 // Instance creation 118 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS); 119 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS); 120 static Handle create_from_str(const char* utf8_str, TRAPS); 121 static oop create_oop_from_str(const char* utf8_str, TRAPS); 122 static Handle create_from_symbol(Symbol* symbol, TRAPS); 123 static Handle create_from_platform_dependent_str(const char* str, TRAPS); 124 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS); 125 126 static void set_compact_strings(bool value); 127 128 static int value_offset_in_bytes() { 129 assert(initialized && (value_offset > 0), "Must be initialized"); 130 return value_offset; 131 } 132 static int hash_offset_in_bytes() { 133 assert(initialized && (hash_offset > 0), "Must be initialized"); 134 return hash_offset; 135 } 136 static int hashIsZero_offset_in_bytes() { 137 assert(initialized && (hashIsZero_offset > 0), "Must be initialized"); 138 return hashIsZero_offset; 139 } 140 static int coder_offset_in_bytes() { 141 assert(initialized && (coder_offset > 0), "Must be initialized"); 142 return coder_offset; 143 } 144 145 static inline void set_value_raw(oop string, typeArrayOop buffer); 146 static inline void set_value(oop string, typeArrayOop buffer); 147 148 // Accessors 149 static inline typeArrayOop value(oop java_string); 150 static inline typeArrayOop value_no_keepalive(oop java_string); 151 static inline bool hash_is_set(oop string); 152 static inline bool is_latin1(oop java_string); 153 static inline int length(oop java_string); 154 static inline int length(oop java_string, typeArrayOop string_value); 155 static int utf8_length(oop java_string); 156 static int utf8_length(oop java_string, typeArrayOop string_value); 157 158 // String converters 159 static char* as_utf8_string(oop java_string); 160 static char* as_utf8_string(oop java_string, char* buf, int buflen); 161 static char* as_utf8_string(oop java_string, int start, int len); 162 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen); 163 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen); 164 static char* as_platform_dependent_str(Handle java_string, TRAPS); 165 static jchar* as_unicode_string(oop java_string, int& length, TRAPS); 166 // produce an ascii string with all other values quoted using \u#### 167 static char* as_quoted_ascii(oop java_string); 168 169 // Compute the hash value for a java.lang.String object which would 170 // contain the characters passed in. 171 // 172 // As the hash value used by the String object itself, in 173 // String.hashCode(). This value is normally calculated in Java code 174 // in the String.hashCode method(), but is precomputed for String 175 // objects in the shared archive file. 176 // hash P(31) from Kernighan & Ritchie 177 // 178 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode(). 179 static unsigned int hash_code(const jchar* s, int len) { 180 unsigned int h = 0; 181 while (len-- > 0) { 182 h = 31*h + (unsigned int) *s; 183 s++; 184 } 185 return h; 186 } 187 188 static unsigned int hash_code(const jbyte* s, int len) { 189 unsigned int h = 0; 190 while (len-- > 0) { 191 h = 31*h + (((unsigned int) *s) & 0xFF); 192 s++; 193 } 194 return h; 195 } 196 197 static unsigned int hash_code(oop java_string); 198 199 static bool equals(oop java_string, const jchar* chars, int len); 200 static bool equals(oop str1, oop str2); 201 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2); 202 203 // Conversion between '.' and '/' formats 204 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); } 205 206 // Conversion 207 static Symbol* as_symbol(oop java_string); 208 static Symbol* as_symbol_or_null(oop java_string); 209 210 // Testers 211 static bool is_instance(oop obj); 212 static inline bool is_instance_inlined(oop obj); 213 214 // Debugging 215 static void print(oop java_string, outputStream* st); 216 friend class JavaClasses; 217 friend class StringTable; 218 }; 219 220 221 // Interface to java.lang.Class objects 222 223 #define CLASS_INJECTED_FIELDS(macro) \ 224 macro(java_lang_Class, klass, intptr_signature, false) \ 225 macro(java_lang_Class, array_klass, intptr_signature, false) \ 226 macro(java_lang_Class, oop_size, int_signature, false) \ 227 macro(java_lang_Class, static_oop_field_count, int_signature, false) \ 228 macro(java_lang_Class, protection_domain, object_signature, false) \ 229 macro(java_lang_Class, signers, object_signature, false) \ 230 macro(java_lang_Class, source_file, object_signature, false) \ 231 232 class java_lang_Class : AllStatic { 233 friend class VMStructs; 234 friend class JVMCIVMStructs; 235 236 private: 237 // The fake offsets are added by the class loader when java.lang.Class is loaded 238 239 static int _klass_offset; 240 static int _array_klass_offset; 241 242 static int _oop_size_offset; 243 static int _static_oop_field_count_offset; 244 245 static int _protection_domain_offset; 246 static int _init_lock_offset; 247 static int _signers_offset; 248 static int _class_loader_offset; 249 static int _module_offset; 250 static int _component_mirror_offset; 251 static int _name_offset; 252 static int _source_file_offset; 253 254 static bool offsets_computed; 255 static int classRedefinedCount_offset; 256 257 static GrowableArray<Klass*>* _fixup_mirror_list; 258 static GrowableArray<Klass*>* _fixup_module_field_list; 259 260 static void set_init_lock(oop java_class, oop init_lock); 261 static void set_protection_domain(oop java_class, oop protection_domain); 262 static void set_class_loader(oop java_class, oop class_loader); 263 static void set_component_mirror(oop java_class, oop comp_mirror); 264 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS); 265 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS); 266 public: 267 static void allocate_fixup_lists(); 268 static void compute_offsets(); 269 270 // Instance creation 271 static void create_mirror(Klass* k, Handle class_loader, Handle module, 272 Handle protection_domain, TRAPS); 273 static void fixup_mirror(Klass* k, TRAPS); 274 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); 275 276 // Archiving 277 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 278 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN; 279 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL); 280 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD) 281 NOT_CDS_JAVA_HEAP_RETURN_(NULL); 282 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module, 283 Handle protection_domain, 284 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false); 285 286 static void fixup_module_field(Klass* k, Handle module); 287 288 // Conversion 289 static Klass* as_Klass(oop java_class); 290 static Klass* as_Klass_raw(oop java_class); 291 static void set_klass(oop java_class, Klass* klass); 292 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL); 293 static Symbol* as_signature(oop java_class, bool intern_if_not_found); 294 static void print_signature(oop java_class, outputStream *st); 295 static const char* as_external_name(oop java_class); 296 // Testing 297 static bool is_instance(oop obj); 298 299 static bool is_primitive(oop java_class); 300 static BasicType primitive_type(oop java_class); 301 static oop primitive_mirror(BasicType t); 302 // JVM_NewArray support 303 static Klass* array_klass_acquire(oop java_class); 304 static void release_set_array_klass(oop java_class, Klass* klass); 305 // compiler support for class operations 306 static int klass_offset_in_bytes() { return _klass_offset; } 307 static int array_klass_offset_in_bytes() { return _array_klass_offset; } 308 // Support for classRedefinedCount field 309 static int classRedefinedCount(oop the_class_mirror); 310 static void set_classRedefinedCount(oop the_class_mirror, int value); 311 312 // Support for embedded per-class oops 313 static oop protection_domain(oop java_class); 314 static oop init_lock(oop java_class); 315 static oop component_mirror(oop java_class); 316 static objArrayOop signers(oop java_class); 317 static void set_signers(oop java_class, objArrayOop signers); 318 319 static oop class_loader(oop java_class); 320 static void set_module(oop java_class, oop module); 321 static oop module(oop java_class); 322 323 static oop name(Handle java_class, TRAPS); 324 325 static oop source_file(oop java_class); 326 static void set_source_file(oop java_class, oop source_file); 327 328 static int oop_size(oop java_class); 329 static int oop_size_raw(oop java_class); 330 static void set_oop_size(HeapWord* java_class, int size); 331 static int static_oop_field_count(oop java_class); 332 static int static_oop_field_count_raw(oop java_class); 333 static void set_static_oop_field_count(oop java_class, int size); 334 335 static GrowableArray<Klass*>* fixup_mirror_list() { 336 return _fixup_mirror_list; 337 } 338 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) { 339 _fixup_mirror_list = v; 340 } 341 342 static GrowableArray<Klass*>* fixup_module_field_list() { 343 return _fixup_module_field_list; 344 } 345 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) { 346 _fixup_module_field_list = v; 347 } 348 349 // Debugging 350 friend class JavaClasses; 351 friend class InstanceKlass; // verification code accesses offsets 352 friend class ClassFileParser; // access to number_of_fake_fields 353 }; 354 355 // Interface to java.lang.Thread objects 356 357 class java_lang_Thread : AllStatic { 358 private: 359 // Note that for this class the layout changed between JDK1.2 and JDK1.3, 360 // so we compute the offsets at startup rather than hard-wiring them. 361 static int _name_offset; 362 static int _group_offset; 363 static int _contextClassLoader_offset; 364 static int _inheritedAccessControlContext_offset; 365 static int _priority_offset; 366 static int _eetop_offset; 367 static int _interrupted_offset; 368 static int _daemon_offset; 369 static int _stillborn_offset; 370 static int _stackSize_offset; 371 static int _tid_offset; 372 static int _thread_status_offset; 373 static int _park_blocker_offset; 374 375 static void compute_offsets(); 376 377 public: 378 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 379 380 // Instance creation 381 static oop create(); 382 // Returns the JavaThread associated with the thread obj 383 static JavaThread* thread(oop java_thread); 384 // Set JavaThread for instance 385 static void set_thread(oop java_thread, JavaThread* thread); 386 // Interrupted status 387 static bool interrupted(oop java_thread); 388 static void set_interrupted(oop java_thread, bool val); 389 // Name 390 static oop name(oop java_thread); 391 static void set_name(oop java_thread, oop name); 392 // Priority 393 static ThreadPriority priority(oop java_thread); 394 static void set_priority(oop java_thread, ThreadPriority priority); 395 // Thread group 396 static oop threadGroup(oop java_thread); 397 // Stillborn 398 static bool is_stillborn(oop java_thread); 399 static void set_stillborn(oop java_thread); 400 // Alive (NOTE: this is not really a field, but provides the correct 401 // definition without doing a Java call) 402 static bool is_alive(oop java_thread); 403 // Daemon 404 static bool is_daemon(oop java_thread); 405 static void set_daemon(oop java_thread); 406 // Context ClassLoader 407 static oop context_class_loader(oop java_thread); 408 // Control context 409 static oop inherited_access_control_context(oop java_thread); 410 // Stack size hint 411 static jlong stackSize(oop java_thread); 412 // Thread ID 413 static jlong thread_id(oop java_thread); 414 415 // Blocker object responsible for thread parking 416 static oop park_blocker(oop java_thread); 417 418 // Java Thread Status for JVMTI and M&M use. 419 // This thread status info is saved in threadStatus field of 420 // java.lang.Thread java class. 421 enum ThreadStatus { 422 NEW = 0, 423 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running 424 JVMTI_THREAD_STATE_RUNNABLE, 425 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() 426 JVMTI_THREAD_STATE_WAITING + 427 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + 428 JVMTI_THREAD_STATE_SLEEPING, 429 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() 430 JVMTI_THREAD_STATE_WAITING + 431 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + 432 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, 433 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) 434 JVMTI_THREAD_STATE_WAITING + 435 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + 436 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, 437 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() 438 JVMTI_THREAD_STATE_WAITING + 439 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + 440 JVMTI_THREAD_STATE_PARKED, 441 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) 442 JVMTI_THREAD_STATE_WAITING + 443 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + 444 JVMTI_THREAD_STATE_PARKED, 445 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block 446 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, 447 TERMINATED = JVMTI_THREAD_STATE_TERMINATED 448 }; 449 // Write thread status info to threadStatus field of java.lang.Thread. 450 static void set_thread_status(oop java_thread_oop, ThreadStatus status); 451 // Read thread status info from threadStatus field of java.lang.Thread. 452 static ThreadStatus get_thread_status(oop java_thread_oop); 453 454 static const char* thread_status_name(oop java_thread_oop); 455 456 // Debugging 457 friend class JavaClasses; 458 }; 459 460 // Interface to java.lang.ThreadGroup objects 461 462 class java_lang_ThreadGroup : AllStatic { 463 private: 464 static int _parent_offset; 465 static int _name_offset; 466 static int _threads_offset; 467 static int _groups_offset; 468 static int _maxPriority_offset; 469 static int _destroyed_offset; 470 static int _daemon_offset; 471 static int _nthreads_offset; 472 static int _ngroups_offset; 473 474 static void compute_offsets(); 475 476 public: 477 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 478 479 // parent ThreadGroup 480 static oop parent(oop java_thread_group); 481 // name 482 static const char* name(oop java_thread_group); 483 // ("name as oop" accessor is not necessary) 484 // Number of threads in group 485 static int nthreads(oop java_thread_group); 486 // threads 487 static objArrayOop threads(oop java_thread_group); 488 // Number of threads in group 489 static int ngroups(oop java_thread_group); 490 // groups 491 static objArrayOop groups(oop java_thread_group); 492 // maxPriority in group 493 static ThreadPriority maxPriority(oop java_thread_group); 494 // Destroyed 495 static bool is_destroyed(oop java_thread_group); 496 // Daemon 497 static bool is_daemon(oop java_thread_group); 498 // Debugging 499 friend class JavaClasses; 500 }; 501 502 503 504 // Interface to java.lang.Throwable objects 505 506 class java_lang_Throwable: AllStatic { 507 friend class BacktraceBuilder; 508 friend class BacktraceIterator; 509 510 private: 511 // Offsets 512 enum { 513 hc_backtrace_offset = 0, 514 hc_detailMessage_offset = 1, 515 hc_cause_offset = 2, // New since 1.4 516 hc_stackTrace_offset = 3 // New since 1.4 517 }; 518 // Trace constants 519 enum { 520 trace_methods_offset = 0, 521 trace_bcis_offset = 1, 522 trace_mirrors_offset = 2, 523 trace_names_offset = 3, 524 trace_next_offset = 4, 525 trace_size = 5, 526 trace_chunk_size = 32 527 }; 528 529 static int backtrace_offset; 530 static int detailMessage_offset; 531 static int stackTrace_offset; 532 static int depth_offset; 533 static int static_unassigned_stacktrace_offset; 534 535 // StackTrace (programmatic access, new since 1.4) 536 static void clear_stacktrace(oop throwable); 537 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) 538 static void set_stacktrace(oop throwable, oop st_element_array); 539 static oop unassigned_stacktrace(); 540 541 public: 542 // Backtrace 543 static oop backtrace(oop throwable); 544 static void set_backtrace(oop throwable, oop value); 545 static int depth(oop throwable); 546 static void set_depth(oop throwable, int value); 547 // Needed by JVMTI to filter out this internal field. 548 static int get_backtrace_offset() { return backtrace_offset;} 549 static int get_detailMessage_offset() { return detailMessage_offset;} 550 // Message 551 static oop message(oop throwable); 552 static void set_message(oop throwable, oop value); 553 static Symbol* detail_message(oop throwable); 554 static void print_stack_element(outputStream *st, const methodHandle& method, int bci); 555 static void print_stack_usage(Handle stream); 556 557 static void compute_offsets(); 558 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 559 560 // Allocate space for backtrace (created but stack trace not filled in) 561 static void allocate_backtrace(Handle throwable, TRAPS); 562 // Fill in current stack trace for throwable with preallocated backtrace (no GC) 563 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); 564 // Fill in current stack trace, can cause GC 565 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS); 566 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle()); 567 // Programmatic access to stack trace 568 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS); 569 // Printing 570 static void print(oop throwable, outputStream* st); 571 static void print_stack_trace(Handle throwable, outputStream* st); 572 static void java_printStackTrace(Handle throwable, TRAPS); 573 // Debugging 574 friend class JavaClasses; 575 }; 576 577 578 // Interface to java.lang.reflect.AccessibleObject objects 579 580 class java_lang_reflect_AccessibleObject: AllStatic { 581 private: 582 // Note that to reduce dependencies on the JDK we compute these 583 // offsets at run-time. 584 static int override_offset; 585 586 static void compute_offsets(); 587 588 public: 589 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 590 591 // Accessors 592 static jboolean override(oop reflect); 593 static void set_override(oop reflect, jboolean value); 594 595 // Debugging 596 friend class JavaClasses; 597 }; 598 599 600 // Interface to java.lang.reflect.Method objects 601 602 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { 603 private: 604 // Note that to reduce dependencies on the JDK we compute these 605 // offsets at run-time. 606 static int clazz_offset; 607 static int name_offset; 608 static int returnType_offset; 609 static int parameterTypes_offset; 610 static int exceptionTypes_offset; 611 static int slot_offset; 612 static int modifiers_offset; 613 static int signature_offset; 614 static int annotations_offset; 615 static int parameter_annotations_offset; 616 static int annotation_default_offset; 617 618 static void compute_offsets(); 619 public: 620 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 621 622 // Allocation 623 static Handle create(TRAPS); 624 625 // Accessors 626 static oop clazz(oop reflect); 627 static void set_clazz(oop reflect, oop value); 628 629 static void set_name(oop method, oop value); 630 631 static oop return_type(oop method); 632 static void set_return_type(oop method, oop value); 633 634 static oop parameter_types(oop method); 635 static void set_parameter_types(oop method, oop value); 636 637 static int slot(oop reflect); 638 static void set_slot(oop reflect, int value); 639 640 static void set_exception_types(oop method, oop value); 641 static void set_modifiers(oop method, int value); 642 static void set_signature(oop method, oop value); 643 static void set_annotations(oop method, oop value); 644 static void set_parameter_annotations(oop method, oop value); 645 static void set_annotation_default(oop method, oop value); 646 647 // Debugging 648 friend class JavaClasses; 649 }; 650 651 652 // Interface to java.lang.reflect.Constructor objects 653 654 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { 655 private: 656 // Note that to reduce dependencies on the JDK we compute these 657 // offsets at run-time. 658 static int clazz_offset; 659 static int parameterTypes_offset; 660 static int exceptionTypes_offset; 661 static int slot_offset; 662 static int modifiers_offset; 663 static int signature_offset; 664 static int annotations_offset; 665 static int parameter_annotations_offset; 666 667 static void compute_offsets(); 668 public: 669 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 670 671 // Allocation 672 static Handle create(TRAPS); 673 674 // Accessors 675 static oop clazz(oop reflect); 676 static void set_clazz(oop reflect, oop value); 677 678 static oop parameter_types(oop constructor); 679 static void set_parameter_types(oop constructor, oop value); 680 681 static int slot(oop reflect); 682 static void set_slot(oop reflect, int value); 683 684 static void set_exception_types(oop constructor, oop value); 685 static void set_modifiers(oop constructor, int value); 686 static void set_signature(oop constructor, oop value); 687 static void set_annotations(oop constructor, oop value); 688 static void set_parameter_annotations(oop method, oop value); 689 690 // Debugging 691 friend class JavaClasses; 692 }; 693 694 695 // Interface to java.lang.reflect.Field objects 696 697 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { 698 private: 699 // Note that to reduce dependencies on the JDK we compute these 700 // offsets at run-time. 701 static int clazz_offset; 702 static int name_offset; 703 static int type_offset; 704 static int slot_offset; 705 static int modifiers_offset; 706 static int signature_offset; 707 static int annotations_offset; 708 709 static void compute_offsets(); 710 711 public: 712 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 713 714 // Allocation 715 static Handle create(TRAPS); 716 717 // Accessors 718 static oop clazz(oop reflect); 719 static void set_clazz(oop reflect, oop value); 720 721 static oop name(oop field); 722 static void set_name(oop field, oop value); 723 724 static oop type(oop field); 725 static void set_type(oop field, oop value); 726 727 static int slot(oop reflect); 728 static void set_slot(oop reflect, int value); 729 730 static int modifiers(oop field); 731 static void set_modifiers(oop field, int value); 732 733 static void set_signature(oop constructor, oop value); 734 static void set_annotations(oop constructor, oop value); 735 static void set_parameter_annotations(oop method, oop value); 736 static void set_annotation_default(oop method, oop value); 737 738 // Debugging 739 friend class JavaClasses; 740 }; 741 742 class java_lang_reflect_Parameter { 743 private: 744 // Note that to reduce dependencies on the JDK we compute these 745 // offsets at run-time. 746 static int name_offset; 747 static int modifiers_offset; 748 static int index_offset; 749 static int executable_offset; 750 751 static void compute_offsets(); 752 753 public: 754 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 755 756 // Allocation 757 static Handle create(TRAPS); 758 759 // Accessors 760 static oop name(oop field); 761 static void set_name(oop field, oop value); 762 763 static int index(oop reflect); 764 static void set_index(oop reflect, int value); 765 766 static int modifiers(oop reflect); 767 static void set_modifiers(oop reflect, int value); 768 769 static oop executable(oop constructor); 770 static void set_executable(oop constructor, oop value); 771 772 friend class JavaClasses; 773 }; 774 775 #define MODULE_INJECTED_FIELDS(macro) \ 776 macro(java_lang_Module, module_entry, intptr_signature, false) 777 778 class java_lang_Module { 779 private: 780 static int loader_offset; 781 static int name_offset; 782 static int _module_entry_offset; 783 static void compute_offsets(); 784 785 public: 786 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 787 788 // Allocation 789 static Handle create(Handle loader, Handle module_name, TRAPS); 790 791 // Testers 792 static bool is_instance(oop obj); 793 794 // Accessors 795 static oop loader(oop module); 796 static void set_loader(oop module, oop value); 797 798 static oop name(oop module); 799 static void set_name(oop module, oop value); 800 801 static ModuleEntry* module_entry(oop module); 802 static void set_module_entry(oop module, ModuleEntry* module_entry); 803 804 friend class JavaClasses; 805 }; 806 807 // Interface to jdk.internal.reflect.ConstantPool objects 808 class reflect_ConstantPool { 809 private: 810 // Note that to reduce dependencies on the JDK we compute these 811 // offsets at run-time. 812 static int _oop_offset; 813 814 static void compute_offsets(); 815 816 public: 817 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 818 819 // Allocation 820 static Handle create(TRAPS); 821 822 // Accessors 823 static void set_cp(oop reflect, ConstantPool* value); 824 static int oop_offset() { 825 return _oop_offset; 826 } 827 828 static ConstantPool* get_cp(oop reflect); 829 830 // Debugging 831 friend class JavaClasses; 832 }; 833 834 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects 835 class reflect_UnsafeStaticFieldAccessorImpl { 836 private: 837 static int _base_offset; 838 static void compute_offsets(); 839 840 public: 841 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 842 843 static int base_offset() { 844 return _base_offset; 845 } 846 847 // Debugging 848 friend class JavaClasses; 849 }; 850 851 // Interface to java.lang primitive type boxing objects: 852 // - java.lang.Boolean 853 // - java.lang.Character 854 // - java.lang.Float 855 // - java.lang.Double 856 // - java.lang.Byte 857 // - java.lang.Short 858 // - java.lang.Integer 859 // - java.lang.Long 860 861 // This could be separated out into 8 individual classes. 862 863 class java_lang_boxing_object: AllStatic { 864 private: 865 enum { 866 hc_value_offset = 0 867 }; 868 static int value_offset; 869 static int long_value_offset; 870 871 static oop initialize_and_allocate(BasicType type, TRAPS); 872 public: 873 // Allocation. Returns a boxed value, or NULL for invalid type. 874 static oop create(BasicType type, jvalue* value, TRAPS); 875 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. 876 static BasicType get_value(oop box, jvalue* value); 877 static BasicType set_value(oop box, jvalue* value); 878 static BasicType basic_type(oop box); 879 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } 880 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } 881 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } 882 static void print(BasicType type, jvalue* value, outputStream* st); 883 884 static int value_offset_in_bytes(BasicType type) { 885 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : 886 value_offset; 887 } 888 889 // Debugging 890 friend class JavaClasses; 891 }; 892 893 894 895 // Interface to java.lang.ref.Reference objects 896 897 class java_lang_ref_Reference: AllStatic { 898 public: 899 enum { 900 hc_referent_offset = 0, 901 hc_queue_offset = 1, 902 hc_next_offset = 2, 903 hc_discovered_offset = 3 // Is not last, see SoftRefs. 904 }; 905 906 static int referent_offset; 907 static int queue_offset; 908 static int next_offset; 909 static int discovered_offset; 910 911 // Accessors 912 static inline oop referent(oop ref); 913 static inline void set_referent(oop ref, oop value); 914 static inline void set_referent_raw(oop ref, oop value); 915 static inline HeapWord* referent_addr_raw(oop ref); 916 static inline oop next(oop ref); 917 static inline void set_next(oop ref, oop value); 918 static inline void set_next_raw(oop ref, oop value); 919 static inline HeapWord* next_addr_raw(oop ref); 920 static inline oop discovered(oop ref); 921 static inline void set_discovered(oop ref, oop value); 922 static inline void set_discovered_raw(oop ref, oop value); 923 static inline HeapWord* discovered_addr_raw(oop ref); 924 static inline oop queue(oop ref); 925 static inline void set_queue(oop ref, oop value); 926 static bool is_referent_field(oop obj, ptrdiff_t offset); 927 static inline bool is_final(oop ref); 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_offsets(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_offsets(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_offsets(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_offsets(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_offsets(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 static void set_vmholder(oop resolved_method, oop holder); 1063 1064 // find or create resolved member name 1065 static oop find_resolved_method(const methodHandle& m, TRAPS); 1066 1067 static bool is_instance(oop resolved_method); 1068 }; 1069 1070 1071 #define MEMBERNAME_INJECTED_FIELDS(macro) \ 1072 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) 1073 1074 1075 class java_lang_invoke_MemberName: AllStatic { 1076 friend class JavaClasses; 1077 1078 private: 1079 // From java.lang.invoke.MemberName: 1080 // private Class<?> clazz; // class in which the method is defined 1081 // private String name; // may be null if not yet materialized 1082 // private Object type; // may be null if not yet materialized 1083 // private int flags; // modifier bits; see reflect.Modifier 1084 // private ResolvedMethodName method; // holds VM-specific target value 1085 // private intptr_t vmindex; // member index within class or interface 1086 static int _clazz_offset; 1087 static int _name_offset; 1088 static int _type_offset; 1089 static int _flags_offset; 1090 static int _method_offset; 1091 static int _vmindex_offset; 1092 1093 static void compute_offsets(); 1094 1095 public: 1096 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1097 // Accessors 1098 static oop clazz(oop mname); 1099 static void set_clazz(oop mname, oop clazz); 1100 1101 static oop type(oop mname); 1102 static void set_type(oop mname, oop type); 1103 1104 static oop name(oop mname); 1105 static void set_name(oop mname, oop name); 1106 1107 static int flags(oop mname); 1108 static void set_flags(oop mname, int flags); 1109 1110 // Link through ResolvedMethodName field to get Method* 1111 static Method* vmtarget(oop mname); 1112 static void set_method(oop mname, oop method); 1113 1114 static intptr_t vmindex(oop mname); 1115 static void set_vmindex(oop mname, intptr_t index); 1116 1117 // Testers 1118 static bool is_subclass(Klass* klass) { 1119 return klass->is_subclass_of(SystemDictionary::MemberName_klass()); 1120 } 1121 static bool is_instance(oop obj); 1122 1123 static bool is_method(oop obj); 1124 1125 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): 1126 enum { 1127 MN_IS_METHOD = 0x00010000, // method (not constructor) 1128 MN_IS_CONSTRUCTOR = 0x00020000, // constructor 1129 MN_IS_FIELD = 0x00040000, // field 1130 MN_IS_TYPE = 0x00080000, // nested type 1131 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected 1132 MN_REFERENCE_KIND_SHIFT = 24, // refKind 1133 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, 1134 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers: 1135 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes 1136 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces 1137 }; 1138 1139 // Accessors for code generation: 1140 static int clazz_offset_in_bytes() { return _clazz_offset; } 1141 static int type_offset_in_bytes() { return _type_offset; } 1142 static int name_offset_in_bytes() { return _name_offset; } 1143 static int flags_offset_in_bytes() { return _flags_offset; } 1144 static int method_offset_in_bytes() { return _method_offset; } 1145 static int vmindex_offset_in_bytes() { return _vmindex_offset; } 1146 }; 1147 1148 1149 // Interface to java.lang.invoke.MethodType objects 1150 1151 class java_lang_invoke_MethodType: AllStatic { 1152 friend class JavaClasses; 1153 1154 private: 1155 static int _rtype_offset; 1156 static int _ptypes_offset; 1157 1158 static void compute_offsets(); 1159 1160 public: 1161 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1162 // Accessors 1163 static oop rtype(oop mt); 1164 static objArrayOop ptypes(oop mt); 1165 1166 static oop ptype(oop mt, int index); 1167 static int ptype_count(oop mt); 1168 1169 static int ptype_slot_count(oop mt); // extra counts for long/double 1170 static int rtype_slot_count(oop mt); // extra counts for long/double 1171 1172 static Symbol* as_signature(oop mt, bool intern_if_not_found); 1173 static void print_signature(oop mt, outputStream* st); 1174 1175 static bool is_instance(oop obj); 1176 1177 static bool equals(oop mt1, oop mt2); 1178 1179 // Accessors for code generation: 1180 static int rtype_offset_in_bytes() { return _rtype_offset; } 1181 static int ptypes_offset_in_bytes() { return _ptypes_offset; } 1182 }; 1183 1184 1185 // Interface to java.lang.invoke.CallSite objects 1186 1187 class java_lang_invoke_CallSite: AllStatic { 1188 friend class JavaClasses; 1189 1190 private: 1191 static int _target_offset; 1192 static int _context_offset; 1193 1194 static void compute_offsets(); 1195 1196 public: 1197 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1198 // Accessors 1199 static oop target( oop site); 1200 static void set_target( oop site, oop target); 1201 static void set_target_volatile( oop site, oop target); 1202 1203 static oop context_no_keepalive(oop site); 1204 1205 // Testers 1206 static bool is_subclass(Klass* klass) { 1207 return klass->is_subclass_of(SystemDictionary::CallSite_klass()); 1208 } 1209 static bool is_instance(oop obj); 1210 1211 // Accessors for code generation: 1212 static int target_offset_in_bytes() { return _target_offset; } 1213 }; 1214 1215 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects 1216 1217 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \ 1218 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \ 1219 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false) 1220 1221 class DependencyContext; 1222 1223 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic { 1224 friend class JavaClasses; 1225 1226 private: 1227 static int _vmdependencies_offset; 1228 static int _last_cleanup_offset; 1229 1230 static void compute_offsets(); 1231 1232 public: 1233 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1234 // Accessors 1235 static DependencyContext vmdependencies(oop context); 1236 1237 // Testers 1238 static bool is_subclass(Klass* klass) { 1239 return klass->is_subclass_of(SystemDictionary::Context_klass()); 1240 } 1241 static bool is_instance(oop obj); 1242 }; 1243 1244 // Interface to java.security.AccessControlContext objects 1245 1246 class java_security_AccessControlContext: AllStatic { 1247 private: 1248 // Note that for this class the layout changed between JDK1.2 and JDK1.3, 1249 // so we compute the offsets at startup rather than hard-wiring them. 1250 static int _context_offset; 1251 static int _privilegedContext_offset; 1252 static int _isPrivileged_offset; 1253 static int _isAuthorized_offset; 1254 1255 static void compute_offsets(); 1256 public: 1257 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1258 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); 1259 1260 // Debugging/initialization 1261 friend class JavaClasses; 1262 }; 1263 1264 1265 // Interface to java.lang.ClassLoader objects 1266 1267 #define CLASSLOADER_INJECTED_FIELDS(macro) \ 1268 macro(java_lang_ClassLoader, loader_data, intptr_signature, false) 1269 1270 class java_lang_ClassLoader : AllStatic { 1271 private: 1272 static int _loader_data_offset; 1273 static bool offsets_computed; 1274 static int parent_offset; 1275 static int parallelCapable_offset; 1276 static int name_offset; 1277 static int nameAndId_offset; 1278 static int unnamedModule_offset; 1279 1280 public: 1281 static void compute_offsets(); 1282 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1283 1284 static ClassLoaderData* loader_data_acquire(oop loader); 1285 static ClassLoaderData* loader_data_raw(oop loader); 1286 static void release_set_loader_data(oop loader, ClassLoaderData* new_data); 1287 1288 static oop parent(oop loader); 1289 static oop name(oop loader); 1290 static oop nameAndId(oop loader); 1291 static bool isAncestor(oop loader, oop cl); 1292 1293 // Support for parallelCapable field 1294 static bool parallelCapable(oop the_class_mirror); 1295 1296 static bool is_trusted_loader(oop loader); 1297 1298 // Return true if this is one of the class loaders associated with 1299 // the generated bytecodes for reflection. 1300 static bool is_reflection_class_loader(oop loader); 1301 1302 // Fix for 4474172 1303 static oop non_reflection_class_loader(oop loader); 1304 1305 // Testers 1306 static bool is_subclass(Klass* klass) { 1307 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass()); 1308 } 1309 static bool is_instance(oop obj); 1310 1311 static oop unnamedModule(oop loader); 1312 1313 // Debugging 1314 friend class JavaClasses; 1315 friend class ClassFileParser; // access to number_of_fake_fields 1316 }; 1317 1318 1319 // Interface to java.lang.System objects 1320 1321 class java_lang_System : AllStatic { 1322 private: 1323 static int static_in_offset; 1324 static int static_out_offset; 1325 static int static_err_offset; 1326 static int static_security_offset; 1327 1328 public: 1329 static int in_offset_in_bytes(); 1330 static int out_offset_in_bytes(); 1331 static int err_offset_in_bytes(); 1332 1333 static void compute_offsets(); 1334 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1335 1336 // Debugging 1337 friend class JavaClasses; 1338 }; 1339 1340 1341 // Interface to java.lang.StackTraceElement objects 1342 1343 class java_lang_StackTraceElement: AllStatic { 1344 private: 1345 static int declaringClassObject_offset; 1346 static int classLoaderName_offset; 1347 static int moduleName_offset; 1348 static int moduleVersion_offset; 1349 static int declaringClass_offset; 1350 static int methodName_offset; 1351 static int fileName_offset; 1352 static int lineNumber_offset; 1353 1354 // Setters 1355 static void set_classLoaderName(oop element, oop value); 1356 static void set_moduleName(oop element, oop value); 1357 static void set_moduleVersion(oop element, oop value); 1358 static void set_declaringClass(oop element, oop value); 1359 static void set_methodName(oop element, oop value); 1360 static void set_fileName(oop element, oop value); 1361 static void set_lineNumber(oop element, int value); 1362 static void set_declaringClassObject(oop element, oop value); 1363 1364 public: 1365 // Create an instance of StackTraceElement 1366 static oop create(const methodHandle& method, int bci, TRAPS); 1367 1368 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method, 1369 int version, int bci, Symbol* name, TRAPS); 1370 1371 static void compute_offsets(); 1372 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1373 1374 #if INCLUDE_JVMCI 1375 static void decode(Handle mirror, int method, int version, int bci, int cpref, Symbol*& methodName, Symbol*& fileName, int& lineNumber); 1376 static void decode(Handle mirror, methodHandle method, int bci, Symbol*& methodName, Symbol*& fileName, int& lineNumber); 1377 #endif 1378 1379 // Debugging 1380 friend class JavaClasses; 1381 }; 1382 1383 1384 class Backtrace: AllStatic { 1385 public: 1386 // Helper backtrace functions to store bci|version together. 1387 static int merge_bci_and_version(int bci, int version); 1388 static int merge_mid_and_cpref(int mid, int cpref); 1389 static int bci_at(unsigned int merged); 1390 static int version_at(unsigned int merged); 1391 static int mid_at(unsigned int merged); 1392 static int cpref_at(unsigned int merged); 1393 static int get_line_number(const methodHandle& method, int bci); 1394 static Symbol* get_source_file_name(InstanceKlass* holder, int version); 1395 1396 // Debugging 1397 friend class JavaClasses; 1398 }; 1399 1400 // Interface to java.lang.StackFrameInfo objects 1401 1402 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \ 1403 macro(java_lang_StackFrameInfo, version, short_signature, false) 1404 1405 class java_lang_StackFrameInfo: AllStatic { 1406 private: 1407 static int _memberName_offset; 1408 static int _bci_offset; 1409 static int _version_offset; 1410 1411 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS); 1412 1413 public: 1414 // Setters 1415 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS); 1416 static void set_bci(oop info, int value); 1417 1418 static void set_version(oop info, short value); 1419 1420 static void compute_offsets(); 1421 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1422 1423 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS); 1424 1425 // Debugging 1426 friend class JavaClasses; 1427 }; 1428 1429 class java_lang_LiveStackFrameInfo: AllStatic { 1430 private: 1431 static int _monitors_offset; 1432 static int _locals_offset; 1433 static int _operands_offset; 1434 static int _mode_offset; 1435 1436 public: 1437 static void set_monitors(oop info, oop value); 1438 static void set_locals(oop info, oop value); 1439 static void set_operands(oop info, oop value); 1440 static void set_mode(oop info, int value); 1441 1442 static void compute_offsets(); 1443 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1444 1445 // Debugging 1446 friend class JavaClasses; 1447 }; 1448 1449 // Interface to java.lang.AssertionStatusDirectives objects 1450 1451 class java_lang_AssertionStatusDirectives: AllStatic { 1452 private: 1453 static int classes_offset; 1454 static int classEnabled_offset; 1455 static int packages_offset; 1456 static int packageEnabled_offset; 1457 static int deflt_offset; 1458 1459 public: 1460 // Setters 1461 static void set_classes(oop obj, oop val); 1462 static void set_classEnabled(oop obj, oop val); 1463 static void set_packages(oop obj, oop val); 1464 static void set_packageEnabled(oop obj, oop val); 1465 static void set_deflt(oop obj, bool val); 1466 1467 static void compute_offsets(); 1468 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1469 1470 // Debugging 1471 friend class JavaClasses; 1472 }; 1473 1474 1475 class java_nio_Buffer: AllStatic { 1476 private: 1477 static int _limit_offset; 1478 1479 public: 1480 static int limit_offset(); 1481 static void compute_offsets(); 1482 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1483 }; 1484 1485 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { 1486 private: 1487 static int _owner_offset; 1488 public: 1489 static void compute_offsets(); 1490 static oop get_owner_threadObj(oop obj); 1491 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1492 }; 1493 1494 // Interface to jdk.internal.misc.UnsafeConsants 1495 1496 class jdk_internal_misc_UnsafeConstants : AllStatic { 1497 public: 1498 static void set_unsafe_constants(); 1499 static void compute_offsets() { } 1500 static void serialize_offsets(SerializeClosure* f) { } 1501 }; 1502 1503 class java_lang_Integer : AllStatic { 1504 public: 1505 static jint value(oop obj); 1506 }; 1507 1508 class java_lang_Long : AllStatic { 1509 public: 1510 static jlong value(oop obj); 1511 }; 1512 1513 class java_lang_Character : AllStatic { 1514 public: 1515 static jchar value(oop obj); 1516 }; 1517 1518 class java_lang_Short : AllStatic { 1519 public: 1520 static jshort value(oop obj); 1521 }; 1522 1523 class java_lang_Byte : AllStatic { 1524 public: 1525 static jbyte value(oop obj); 1526 }; 1527 1528 class java_lang_Boolean : AllStatic { 1529 private: 1530 static int _static_TRUE_offset; 1531 static int _static_FALSE_offset; 1532 public: 1533 static Symbol* symbol(); 1534 static void compute_offsets(InstanceKlass* k); 1535 static oop get_TRUE(InstanceKlass *k); 1536 static oop get_FALSE(InstanceKlass *k); 1537 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1538 static jboolean value(oop obj); 1539 }; 1540 1541 class java_lang_Integer_IntegerCache : AllStatic { 1542 private: 1543 static int _static_cache_offset; 1544 public: 1545 static Symbol* symbol(); 1546 static void compute_offsets(InstanceKlass* k); 1547 static objArrayOop cache(InstanceKlass *k); 1548 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1549 }; 1550 1551 class java_lang_Long_LongCache : AllStatic { 1552 private: 1553 static int _static_cache_offset; 1554 public: 1555 static Symbol* symbol(); 1556 static void compute_offsets(InstanceKlass* k); 1557 static objArrayOop cache(InstanceKlass *k); 1558 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1559 }; 1560 1561 class java_lang_Character_CharacterCache : AllStatic { 1562 private: 1563 static int _static_cache_offset; 1564 public: 1565 static Symbol* symbol(); 1566 static void compute_offsets(InstanceKlass* k); 1567 static objArrayOop cache(InstanceKlass *k); 1568 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1569 }; 1570 1571 class java_lang_Short_ShortCache : AllStatic { 1572 private: 1573 static int _static_cache_offset; 1574 public: 1575 static Symbol* symbol(); 1576 static void compute_offsets(InstanceKlass* k); 1577 static objArrayOop cache(InstanceKlass *k); 1578 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1579 }; 1580 1581 class java_lang_Byte_ByteCache : AllStatic { 1582 private: 1583 static int _static_cache_offset; 1584 public: 1585 static Symbol* symbol(); 1586 static void compute_offsets(InstanceKlass* k); 1587 static objArrayOop cache(InstanceKlass *k); 1588 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1589 }; 1590 1591 // Use to declare fields that need to be injected into Java classes 1592 // for the JVM to use. The name_index and signature_index are 1593 // declared in vmSymbols. The may_be_java flag is used to declare 1594 // fields that might already exist in Java but should be injected if 1595 // they don't. Otherwise the field is unconditionally injected and 1596 // the JVM uses the injected one. This is to ensure that name 1597 // collisions don't occur. In general may_be_java should be false 1598 // unless there's a good reason. 1599 1600 class InjectedField { 1601 public: 1602 const SystemDictionary::WKID klass_id; 1603 const vmSymbols::SID name_index; 1604 const vmSymbols::SID signature_index; 1605 const bool may_be_java; 1606 1607 1608 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); } 1609 Symbol* name() const { return lookup_symbol(name_index); } 1610 Symbol* signature() const { return lookup_symbol(signature_index); } 1611 1612 int compute_offset(); 1613 1614 // Find the Symbol for this index 1615 static Symbol* lookup_symbol(int symbol_index) { 1616 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index); 1617 } 1618 }; 1619 1620 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \ 1621 klass##_##name##_enum, 1622 1623 #define ALL_INJECTED_FIELDS(macro) \ 1624 CLASS_INJECTED_FIELDS(macro) \ 1625 CLASSLOADER_INJECTED_FIELDS(macro) \ 1626 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \ 1627 MEMBERNAME_INJECTED_FIELDS(macro) \ 1628 CALLSITECONTEXT_INJECTED_FIELDS(macro) \ 1629 STACKFRAMEINFO_INJECTED_FIELDS(macro) \ 1630 MODULE_INJECTED_FIELDS(macro) 1631 1632 // Interface to hard-coded offset checking 1633 1634 class JavaClasses : AllStatic { 1635 private: 1636 1637 static InjectedField _injected_fields[]; 1638 1639 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; 1640 public: 1641 enum InjectedFieldID { 1642 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM) 1643 MAX_enum 1644 }; 1645 1646 static int compute_injected_offset(InjectedFieldID id); 1647 1648 static void compute_hard_coded_offsets(); 1649 static void compute_offsets(); 1650 static void check_offsets() PRODUCT_RETURN; 1651 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN; 1652 static InjectedField* get_injected(Symbol* class_name, int* field_count); 1653 }; 1654 1655 #undef DECLARE_INJECTED_FIELD_ENUM 1656 1657 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP