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 #define BASIC_JAVA_CLASSES_DO_PART1(f) \ 51 f(java_lang_Class) \ 52 f(java_lang_String) \ 53 //end 54 55 #define BASIC_JAVA_CLASSES_DO_PART2(f) \ 56 f(java_lang_System) \ 57 f(java_lang_ClassLoader) \ 58 f(java_lang_Throwable) \ 59 f(java_lang_Thread) \ 60 f(java_lang_ThreadGroup) \ 61 f(java_lang_AssertionStatusDirectives) \ 62 f(java_lang_ref_SoftReference) \ 63 f(java_lang_invoke_MethodHandle) \ 64 f(java_lang_invoke_DirectMethodHandle) \ 65 f(java_lang_invoke_MemberName) \ 66 f(java_lang_invoke_ResolvedMethodName) \ 67 f(java_lang_invoke_LambdaForm) \ 68 f(java_lang_invoke_MethodType) \ 69 f(java_lang_invoke_CallSite) \ 70 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \ 71 f(java_security_AccessControlContext) \ 72 f(java_lang_reflect_AccessibleObject) \ 73 f(java_lang_reflect_Method) \ 74 f(java_lang_reflect_Constructor) \ 75 f(java_lang_reflect_Field) \ 76 f(java_nio_Buffer) \ 77 f(reflect_ConstantPool) \ 78 f(reflect_UnsafeStaticFieldAccessorImpl) \ 79 f(java_lang_reflect_Parameter) \ 80 f(java_lang_Module) \ 81 f(java_lang_StackTraceElement) \ 82 f(java_lang_StackFrameInfo) \ 83 f(java_lang_LiveStackFrameInfo) \ 84 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \ 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 coder_offset; 98 99 static bool initialized; 100 101 static Handle basic_create(int length, bool byte_arr, TRAPS); 102 103 static inline void set_coder(oop string, jbyte coder); 104 105 public: 106 107 // Coders 108 enum Coder { 109 CODER_LATIN1 = 0, 110 CODER_UTF16 = 1 111 }; 112 113 static void compute_offsets(); 114 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 115 116 // Instance creation 117 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS); 118 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS); 119 static Handle create_from_str(const char* utf8_str, TRAPS); 120 static oop create_oop_from_str(const char* utf8_str, TRAPS); 121 static Handle create_from_symbol(Symbol* symbol, TRAPS); 122 static Handle create_from_platform_dependent_str(const char* str, TRAPS); 123 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS); 124 125 static void set_compact_strings(bool value); 126 127 static int value_offset_in_bytes() { 128 assert(initialized && (value_offset > 0), "Must be initialized"); 129 return value_offset; 130 } 131 static int hash_offset_in_bytes() { 132 assert(initialized && (hash_offset > 0), "Must be initialized"); 133 return hash_offset; 134 } 135 static int coder_offset_in_bytes() { 136 assert(initialized && (coder_offset > 0), "Must be initialized"); 137 return coder_offset; 138 } 139 140 static inline void set_value_raw(oop string, typeArrayOop buffer); 141 static inline void set_value(oop string, typeArrayOop buffer); 142 static inline void set_hash(oop string, unsigned int hash); 143 144 // Accessors 145 static inline typeArrayOop value(oop java_string); 146 static inline typeArrayOop value_no_keepalive(oop java_string); 147 static inline unsigned int hash(oop java_string); 148 static inline bool is_latin1(oop java_string); 149 static inline int length(oop java_string); 150 static int utf8_length(oop java_string); 151 152 // String converters 153 static char* as_utf8_string(oop java_string); 154 static char* as_utf8_string(oop java_string, char* buf, int buflen); 155 static char* as_utf8_string(oop java_string, int start, int len); 156 static char* as_utf8_string(oop java_string, int start, int len, char* buf, int buflen); 157 static char* as_platform_dependent_str(Handle java_string, TRAPS); 158 static jchar* as_unicode_string(oop java_string, int& length, TRAPS); 159 // produce an ascii string with all other values quoted using \u#### 160 static char* as_quoted_ascii(oop java_string); 161 162 // Compute the hash value for a java.lang.String object which would 163 // contain the characters passed in. 164 // 165 // As the hash value used by the String object itself, in 166 // String.hashCode(). This value is normally calculated in Java code 167 // in the String.hashCode method(), but is precomputed for String 168 // objects in the shared archive file. 169 // hash P(31) from Kernighan & Ritchie 170 // 171 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode(). 172 static unsigned int hash_code(const jchar* s, int len) { 173 unsigned int h = 0; 174 while (len-- > 0) { 175 h = 31*h + (unsigned int) *s; 176 s++; 177 } 178 return h; 179 } 180 181 static unsigned int hash_code(const jbyte* s, int len) { 182 unsigned int h = 0; 183 while (len-- > 0) { 184 h = 31*h + (((unsigned int) *s) & 0xFF); 185 s++; 186 } 187 return h; 188 } 189 190 static unsigned int hash_code(oop java_string); 191 192 static bool equals(oop java_string, const jchar* chars, int len); 193 static bool equals(oop str1, oop str2); 194 195 // Conversion between '.' and '/' formats 196 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); } 197 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); } 198 199 // Conversion 200 static Symbol* as_symbol(oop java_string, TRAPS); 201 static Symbol* as_symbol_or_null(oop java_string); 202 203 // Testers 204 static bool is_instance(oop obj); 205 static inline bool is_instance_inlined(oop obj); 206 207 // Debugging 208 static void print(oop java_string, outputStream* st); 209 friend class JavaClasses; 210 friend class StringTable; 211 }; 212 213 214 // Interface to java.lang.Class objects 215 216 #define CLASS_INJECTED_FIELDS(macro) \ 217 macro(java_lang_Class, klass, intptr_signature, false) \ 218 macro(java_lang_Class, array_klass, intptr_signature, false) \ 219 macro(java_lang_Class, oop_size, int_signature, false) \ 220 macro(java_lang_Class, static_oop_field_count, int_signature, false) \ 221 macro(java_lang_Class, protection_domain, object_signature, false) \ 222 macro(java_lang_Class, signers, object_signature, false) 223 224 class java_lang_Class : AllStatic { 225 friend class VMStructs; 226 friend class JVMCIVMStructs; 227 228 private: 229 // The fake offsets are added by the class loader when java.lang.Class is loaded 230 231 static int _klass_offset; 232 static int _array_klass_offset; 233 234 static int _oop_size_offset; 235 static int _static_oop_field_count_offset; 236 237 static int _protection_domain_offset; 238 static int _init_lock_offset; 239 static int _signers_offset; 240 static int _class_loader_offset; 241 static int _module_offset; 242 static int _component_mirror_offset; 243 244 static bool offsets_computed; 245 static int classRedefinedCount_offset; 246 247 static GrowableArray<Klass*>* _fixup_mirror_list; 248 static GrowableArray<Klass*>* _fixup_module_field_list; 249 250 static void set_init_lock(oop java_class, oop init_lock); 251 static void set_protection_domain(oop java_class, oop protection_domain); 252 static void set_class_loader(oop java_class, oop class_loader); 253 static void set_component_mirror(oop java_class, oop comp_mirror); 254 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS); 255 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS); 256 public: 257 static void allocate_fixup_lists(); 258 static void compute_offsets(); 259 260 // Instance creation 261 static void create_mirror(Klass* k, Handle class_loader, Handle module, 262 Handle protection_domain, TRAPS); 263 static void fixup_mirror(Klass* k, TRAPS); 264 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); 265 266 // Archiving 267 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 268 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN; 269 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL); 270 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD) 271 NOT_CDS_JAVA_HEAP_RETURN_(NULL); 272 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module, 273 Handle protection_domain, 274 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false); 275 276 static void fixup_module_field(Klass* k, Handle module); 277 278 // Conversion 279 static Klass* as_Klass(oop java_class); 280 static Klass* as_Klass_raw(oop java_class); 281 static void set_klass(oop java_class, Klass* klass); 282 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL); 283 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS); 284 static void print_signature(oop java_class, outputStream *st); 285 static const char* as_external_name(oop java_class); 286 // Testing 287 static bool is_instance(oop obj); 288 289 static bool is_primitive(oop java_class); 290 static BasicType primitive_type(oop java_class); 291 static oop primitive_mirror(BasicType t); 292 // JVM_NewArray support 293 static Klass* array_klass_acquire(oop java_class); 294 static void release_set_array_klass(oop java_class, Klass* klass); 295 // compiler support for class operations 296 static int klass_offset_in_bytes() { return _klass_offset; } 297 static int array_klass_offset_in_bytes() { return _array_klass_offset; } 298 // Support for classRedefinedCount field 299 static int classRedefinedCount(oop the_class_mirror); 300 static void set_classRedefinedCount(oop the_class_mirror, int value); 301 302 // Support for embedded per-class oops 303 static oop protection_domain(oop java_class); 304 static oop init_lock(oop java_class); 305 static oop component_mirror(oop java_class); 306 static objArrayOop signers(oop java_class); 307 static void set_signers(oop java_class, objArrayOop signers); 308 309 static oop class_loader(oop java_class); 310 static void set_module(oop java_class, oop module); 311 static oop module(oop java_class); 312 313 static int oop_size(oop java_class); 314 static int oop_size_raw(oop java_class); 315 static void set_oop_size(HeapWord* java_class, int size); 316 static int static_oop_field_count(oop java_class); 317 static int static_oop_field_count_raw(oop java_class); 318 static void set_static_oop_field_count(oop java_class, int size); 319 320 static GrowableArray<Klass*>* fixup_mirror_list() { 321 return _fixup_mirror_list; 322 } 323 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) { 324 _fixup_mirror_list = v; 325 } 326 327 static GrowableArray<Klass*>* fixup_module_field_list() { 328 return _fixup_module_field_list; 329 } 330 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) { 331 _fixup_module_field_list = v; 332 } 333 334 // Debugging 335 friend class JavaClasses; 336 friend class InstanceKlass; // verification code accesses offsets 337 friend class ClassFileParser; // access to number_of_fake_fields 338 }; 339 340 // Interface to java.lang.Thread objects 341 342 class java_lang_Thread : AllStatic { 343 private: 344 // Note that for this class the layout changed between JDK1.2 and JDK1.3, 345 // so we compute the offsets at startup rather than hard-wiring them. 346 static int _name_offset; 347 static int _group_offset; 348 static int _contextClassLoader_offset; 349 static int _inheritedAccessControlContext_offset; 350 static int _priority_offset; 351 static int _eetop_offset; 352 static int _daemon_offset; 353 static int _stillborn_offset; 354 static int _stackSize_offset; 355 static int _tid_offset; 356 static int _thread_status_offset; 357 static int _park_blocker_offset; 358 static int _park_event_offset ; 359 360 static void compute_offsets(); 361 362 public: 363 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 364 365 // Instance creation 366 static oop create(); 367 // Returns the JavaThread associated with the thread obj 368 static JavaThread* thread(oop java_thread); 369 // Set JavaThread for instance 370 static void set_thread(oop java_thread, JavaThread* thread); 371 // Name 372 static oop name(oop java_thread); 373 static void set_name(oop java_thread, oop name); 374 // Priority 375 static ThreadPriority priority(oop java_thread); 376 static void set_priority(oop java_thread, ThreadPriority priority); 377 // Thread group 378 static oop threadGroup(oop java_thread); 379 // Stillborn 380 static bool is_stillborn(oop java_thread); 381 static void set_stillborn(oop java_thread); 382 // Alive (NOTE: this is not really a field, but provides the correct 383 // definition without doing a Java call) 384 static bool is_alive(oop java_thread); 385 // Daemon 386 static bool is_daemon(oop java_thread); 387 static void set_daemon(oop java_thread); 388 // Context ClassLoader 389 static oop context_class_loader(oop java_thread); 390 // Control context 391 static oop inherited_access_control_context(oop java_thread); 392 // Stack size hint 393 static jlong stackSize(oop java_thread); 394 // Thread ID 395 static jlong thread_id(oop java_thread); 396 397 // Blocker object responsible for thread parking 398 static oop park_blocker(oop java_thread); 399 400 // Pointer to type-stable park handler, encoded as jlong. 401 // Should be set when apparently null 402 // For details, see unsafe.cpp Unsafe_Unpark 403 static jlong park_event(oop java_thread); 404 static bool set_park_event(oop java_thread, jlong ptr); 405 406 // Java Thread Status for JVMTI and M&M use. 407 // This thread status info is saved in threadStatus field of 408 // java.lang.Thread java class. 409 enum ThreadStatus { 410 NEW = 0, 411 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running 412 JVMTI_THREAD_STATE_RUNNABLE, 413 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() 414 JVMTI_THREAD_STATE_WAITING + 415 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + 416 JVMTI_THREAD_STATE_SLEEPING, 417 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() 418 JVMTI_THREAD_STATE_WAITING + 419 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + 420 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, 421 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) 422 JVMTI_THREAD_STATE_WAITING + 423 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + 424 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, 425 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() 426 JVMTI_THREAD_STATE_WAITING + 427 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + 428 JVMTI_THREAD_STATE_PARKED, 429 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) 430 JVMTI_THREAD_STATE_WAITING + 431 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + 432 JVMTI_THREAD_STATE_PARKED, 433 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block 434 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, 435 TERMINATED = JVMTI_THREAD_STATE_TERMINATED 436 }; 437 // Write thread status info to threadStatus field of java.lang.Thread. 438 static void set_thread_status(oop java_thread_oop, ThreadStatus status); 439 // Read thread status info from threadStatus field of java.lang.Thread. 440 static ThreadStatus get_thread_status(oop java_thread_oop); 441 442 static const char* thread_status_name(oop java_thread_oop); 443 444 // Debugging 445 friend class JavaClasses; 446 }; 447 448 // Interface to java.lang.ThreadGroup objects 449 450 class java_lang_ThreadGroup : AllStatic { 451 private: 452 static int _parent_offset; 453 static int _name_offset; 454 static int _threads_offset; 455 static int _groups_offset; 456 static int _maxPriority_offset; 457 static int _destroyed_offset; 458 static int _daemon_offset; 459 static int _nthreads_offset; 460 static int _ngroups_offset; 461 462 static void compute_offsets(); 463 464 public: 465 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 466 467 // parent ThreadGroup 468 static oop parent(oop java_thread_group); 469 // name 470 static const char* name(oop java_thread_group); 471 // ("name as oop" accessor is not necessary) 472 // Number of threads in group 473 static int nthreads(oop java_thread_group); 474 // threads 475 static objArrayOop threads(oop java_thread_group); 476 // Number of threads in group 477 static int ngroups(oop java_thread_group); 478 // groups 479 static objArrayOop groups(oop java_thread_group); 480 // maxPriority in group 481 static ThreadPriority maxPriority(oop java_thread_group); 482 // Destroyed 483 static bool is_destroyed(oop java_thread_group); 484 // Daemon 485 static bool is_daemon(oop java_thread_group); 486 // Debugging 487 friend class JavaClasses; 488 }; 489 490 491 492 // Interface to java.lang.Throwable objects 493 494 class java_lang_Throwable: AllStatic { 495 friend class BacktraceBuilder; 496 friend class BacktraceIterator; 497 498 private: 499 // Offsets 500 enum { 501 hc_backtrace_offset = 0, 502 hc_detailMessage_offset = 1, 503 hc_cause_offset = 2, // New since 1.4 504 hc_stackTrace_offset = 3 // New since 1.4 505 }; 506 // Trace constants 507 enum { 508 trace_methods_offset = 0, 509 trace_bcis_offset = 1, 510 trace_mirrors_offset = 2, 511 trace_names_offset = 3, 512 trace_next_offset = 4, 513 trace_size = 5, 514 trace_chunk_size = 32 515 }; 516 517 static int backtrace_offset; 518 static int detailMessage_offset; 519 static int stackTrace_offset; 520 static int depth_offset; 521 static int static_unassigned_stacktrace_offset; 522 523 // StackTrace (programmatic access, new since 1.4) 524 static void clear_stacktrace(oop throwable); 525 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) 526 static void set_stacktrace(oop throwable, oop st_element_array); 527 static oop unassigned_stacktrace(); 528 529 public: 530 // Backtrace 531 static oop backtrace(oop throwable); 532 static void set_backtrace(oop throwable, oop value); 533 static int depth(oop throwable); 534 static void set_depth(oop throwable, int value); 535 // Needed by JVMTI to filter out this internal field. 536 static int get_backtrace_offset() { return backtrace_offset;} 537 static int get_detailMessage_offset() { return detailMessage_offset;} 538 // Message 539 static oop message(oop throwable); 540 static void set_message(oop throwable, oop value); 541 static Symbol* detail_message(oop throwable); 542 static void print_stack_element(outputStream *st, const methodHandle& method, int bci); 543 static void print_stack_usage(Handle stream); 544 545 static void compute_offsets(); 546 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 547 548 // Allocate space for backtrace (created but stack trace not filled in) 549 static void allocate_backtrace(Handle throwable, TRAPS); 550 // Fill in current stack trace for throwable with preallocated backtrace (no GC) 551 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); 552 // Fill in current stack trace, can cause GC 553 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS); 554 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle()); 555 // Programmatic access to stack trace 556 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS); 557 // Printing 558 static void print(oop throwable, outputStream* st); 559 static void print_stack_trace(Handle throwable, outputStream* st); 560 static void java_printStackTrace(Handle throwable, TRAPS); 561 // Debugging 562 friend class JavaClasses; 563 }; 564 565 566 // Interface to java.lang.reflect.AccessibleObject objects 567 568 class java_lang_reflect_AccessibleObject: AllStatic { 569 private: 570 // Note that to reduce dependencies on the JDK we compute these 571 // offsets at run-time. 572 static int override_offset; 573 574 static void compute_offsets(); 575 576 public: 577 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 578 579 // Accessors 580 static jboolean override(oop reflect); 581 static void set_override(oop reflect, jboolean value); 582 583 // Debugging 584 friend class JavaClasses; 585 }; 586 587 588 // Interface to java.lang.reflect.Method objects 589 590 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { 591 private: 592 // Note that to reduce dependencies on the JDK we compute these 593 // offsets at run-time. 594 static int clazz_offset; 595 static int name_offset; 596 static int returnType_offset; 597 static int parameterTypes_offset; 598 static int exceptionTypes_offset; 599 static int slot_offset; 600 static int modifiers_offset; 601 static int signature_offset; 602 static int annotations_offset; 603 static int parameter_annotations_offset; 604 static int annotation_default_offset; 605 606 static void compute_offsets(); 607 public: 608 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 609 610 // Allocation 611 static Handle create(TRAPS); 612 613 // Accessors 614 static oop clazz(oop reflect); 615 static void set_clazz(oop reflect, oop value); 616 617 static void set_name(oop method, oop value); 618 619 static oop return_type(oop method); 620 static void set_return_type(oop method, oop value); 621 622 static oop parameter_types(oop method); 623 static void set_parameter_types(oop method, oop value); 624 625 static int slot(oop reflect); 626 static void set_slot(oop reflect, int value); 627 628 static void set_exception_types(oop method, oop value); 629 static void set_modifiers(oop method, int value); 630 static void set_signature(oop method, oop value); 631 static void set_annotations(oop method, oop value); 632 static void set_parameter_annotations(oop method, oop value); 633 static void set_annotation_default(oop method, oop value); 634 635 // Debugging 636 friend class JavaClasses; 637 }; 638 639 640 // Interface to java.lang.reflect.Constructor objects 641 642 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { 643 private: 644 // Note that to reduce dependencies on the JDK we compute these 645 // offsets at run-time. 646 static int clazz_offset; 647 static int parameterTypes_offset; 648 static int exceptionTypes_offset; 649 static int slot_offset; 650 static int modifiers_offset; 651 static int signature_offset; 652 static int annotations_offset; 653 static int parameter_annotations_offset; 654 655 static void compute_offsets(); 656 public: 657 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 658 659 // Allocation 660 static Handle create(TRAPS); 661 662 // Accessors 663 static oop clazz(oop reflect); 664 static void set_clazz(oop reflect, oop value); 665 666 static oop parameter_types(oop constructor); 667 static void set_parameter_types(oop constructor, oop value); 668 669 static int slot(oop reflect); 670 static void set_slot(oop reflect, int value); 671 672 static void set_exception_types(oop constructor, oop value); 673 static void set_modifiers(oop constructor, int value); 674 static void set_signature(oop constructor, oop value); 675 static void set_annotations(oop constructor, oop value); 676 static void set_parameter_annotations(oop method, oop value); 677 678 // Debugging 679 friend class JavaClasses; 680 }; 681 682 683 // Interface to java.lang.reflect.Field objects 684 685 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { 686 private: 687 // Note that to reduce dependencies on the JDK we compute these 688 // offsets at run-time. 689 static int clazz_offset; 690 static int name_offset; 691 static int type_offset; 692 static int slot_offset; 693 static int modifiers_offset; 694 static int signature_offset; 695 static int annotations_offset; 696 697 static void compute_offsets(); 698 699 public: 700 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 701 702 // Allocation 703 static Handle create(TRAPS); 704 705 // Accessors 706 static oop clazz(oop reflect); 707 static void set_clazz(oop reflect, oop value); 708 709 static oop name(oop field); 710 static void set_name(oop field, oop value); 711 712 static oop type(oop field); 713 static void set_type(oop field, oop value); 714 715 static int slot(oop reflect); 716 static void set_slot(oop reflect, int value); 717 718 static int modifiers(oop field); 719 static void set_modifiers(oop field, int value); 720 721 static void set_signature(oop constructor, oop value); 722 static void set_annotations(oop constructor, oop value); 723 static void set_parameter_annotations(oop method, oop value); 724 static void set_annotation_default(oop method, oop value); 725 726 // Debugging 727 friend class JavaClasses; 728 }; 729 730 class java_lang_reflect_Parameter { 731 private: 732 // Note that to reduce dependencies on the JDK we compute these 733 // offsets at run-time. 734 static int name_offset; 735 static int modifiers_offset; 736 static int index_offset; 737 static int executable_offset; 738 739 static void compute_offsets(); 740 741 public: 742 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 743 744 // Allocation 745 static Handle create(TRAPS); 746 747 // Accessors 748 static oop name(oop field); 749 static void set_name(oop field, oop value); 750 751 static int index(oop reflect); 752 static void set_index(oop reflect, int value); 753 754 static int modifiers(oop reflect); 755 static void set_modifiers(oop reflect, int value); 756 757 static oop executable(oop constructor); 758 static void set_executable(oop constructor, oop value); 759 760 friend class JavaClasses; 761 }; 762 763 #define MODULE_INJECTED_FIELDS(macro) \ 764 macro(java_lang_Module, module_entry, intptr_signature, false) 765 766 class java_lang_Module { 767 private: 768 static int loader_offset; 769 static int name_offset; 770 static int _module_entry_offset; 771 static void compute_offsets(); 772 773 public: 774 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 775 776 // Allocation 777 static Handle create(Handle loader, Handle module_name, TRAPS); 778 779 // Testers 780 static bool is_instance(oop obj); 781 782 // Accessors 783 static oop loader(oop module); 784 static void set_loader(oop module, oop value); 785 786 static oop name(oop module); 787 static void set_name(oop module, oop value); 788 789 static ModuleEntry* module_entry(oop module); 790 static void set_module_entry(oop module, ModuleEntry* module_entry); 791 792 friend class JavaClasses; 793 }; 794 795 // Interface to jdk.internal.reflect.ConstantPool objects 796 class reflect_ConstantPool { 797 private: 798 // Note that to reduce dependencies on the JDK we compute these 799 // offsets at run-time. 800 static int _oop_offset; 801 802 static void compute_offsets(); 803 804 public: 805 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 806 807 // Allocation 808 static Handle create(TRAPS); 809 810 // Accessors 811 static void set_cp(oop reflect, ConstantPool* value); 812 static int oop_offset() { 813 return _oop_offset; 814 } 815 816 static ConstantPool* get_cp(oop reflect); 817 818 // Debugging 819 friend class JavaClasses; 820 }; 821 822 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects 823 class reflect_UnsafeStaticFieldAccessorImpl { 824 private: 825 static int _base_offset; 826 static void compute_offsets(); 827 828 public: 829 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 830 831 static int base_offset() { 832 return _base_offset; 833 } 834 835 // Debugging 836 friend class JavaClasses; 837 }; 838 839 // Interface to java.lang primitive type boxing objects: 840 // - java.lang.Boolean 841 // - java.lang.Character 842 // - java.lang.Float 843 // - java.lang.Double 844 // - java.lang.Byte 845 // - java.lang.Short 846 // - java.lang.Integer 847 // - java.lang.Long 848 849 // This could be separated out into 8 individual classes. 850 851 class java_lang_boxing_object: AllStatic { 852 private: 853 enum { 854 hc_value_offset = 0 855 }; 856 static int value_offset; 857 static int long_value_offset; 858 859 static oop initialize_and_allocate(BasicType type, TRAPS); 860 public: 861 // Allocation. Returns a boxed value, or NULL for invalid type. 862 static oop create(BasicType type, jvalue* value, TRAPS); 863 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. 864 static BasicType get_value(oop box, jvalue* value); 865 static BasicType set_value(oop box, jvalue* value); 866 static BasicType basic_type(oop box); 867 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } 868 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } 869 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } 870 static void print(BasicType type, jvalue* value, outputStream* st); 871 872 static int value_offset_in_bytes(BasicType type) { 873 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : 874 value_offset; 875 } 876 877 // Debugging 878 friend class JavaClasses; 879 }; 880 881 882 883 // Interface to java.lang.ref.Reference objects 884 885 class java_lang_ref_Reference: AllStatic { 886 public: 887 enum { 888 hc_referent_offset = 0, 889 hc_queue_offset = 1, 890 hc_next_offset = 2, 891 hc_discovered_offset = 3 // Is not last, see SoftRefs. 892 }; 893 894 static int referent_offset; 895 static int queue_offset; 896 static int next_offset; 897 static int discovered_offset; 898 899 // Accessors 900 static inline oop referent(oop ref); 901 static inline void set_referent(oop ref, oop value); 902 static inline void set_referent_raw(oop ref, oop value); 903 static inline HeapWord* referent_addr_raw(oop ref); 904 static inline oop next(oop ref); 905 static inline void set_next(oop ref, oop value); 906 static inline void set_next_raw(oop ref, oop value); 907 static inline HeapWord* next_addr_raw(oop ref); 908 static inline oop discovered(oop ref); 909 static inline void set_discovered(oop ref, oop value); 910 static inline void set_discovered_raw(oop ref, oop value); 911 static inline HeapWord* discovered_addr_raw(oop ref); 912 static inline oop queue(oop ref); 913 static inline void set_queue(oop ref, oop value); 914 static bool is_referent_field(oop obj, ptrdiff_t offset); 915 static inline bool is_final(oop ref); 916 static inline bool is_phantom(oop ref); 917 }; 918 919 920 // Interface to java.lang.ref.SoftReference objects 921 922 class java_lang_ref_SoftReference: public java_lang_ref_Reference { 923 public: 924 static int timestamp_offset; 925 static int static_clock_offset; 926 927 // Accessors 928 static jlong timestamp(oop ref); 929 930 // Accessors for statics 931 static jlong clock(); 932 static void set_clock(jlong value); 933 934 static void compute_offsets(); 935 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 936 }; 937 938 // Interface to java.lang.invoke.MethodHandle objects 939 940 class MethodHandleEntry; 941 942 class java_lang_invoke_MethodHandle: AllStatic { 943 friend class JavaClasses; 944 945 private: 946 static int _type_offset; // the MethodType of this MH 947 static int _form_offset; // the LambdaForm of this MH 948 949 static void compute_offsets(); 950 951 public: 952 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 953 954 // Accessors 955 static oop type(oop mh); 956 static void set_type(oop mh, oop mtype); 957 958 static oop form(oop mh); 959 static void set_form(oop mh, oop lform); 960 961 // Testers 962 static bool is_subclass(Klass* klass) { 963 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass()); 964 } 965 static bool is_instance(oop obj); 966 967 // Accessors for code generation: 968 static int type_offset_in_bytes() { return _type_offset; } 969 static int form_offset_in_bytes() { return _form_offset; } 970 }; 971 972 // Interface to java.lang.invoke.DirectMethodHandle objects 973 974 class java_lang_invoke_DirectMethodHandle: AllStatic { 975 friend class JavaClasses; 976 977 private: 978 static int _member_offset; // the MemberName of this DMH 979 980 static void compute_offsets(); 981 982 public: 983 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 984 985 // Accessors 986 static oop member(oop mh); 987 988 // Testers 989 static bool is_subclass(Klass* klass) { 990 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass()); 991 } 992 static bool is_instance(oop obj); 993 994 // Accessors for code generation: 995 static int member_offset_in_bytes() { return _member_offset; } 996 }; 997 998 // Interface to java.lang.invoke.LambdaForm objects 999 // (These are a private interface for managing adapter code generation.) 1000 1001 class java_lang_invoke_LambdaForm: AllStatic { 1002 friend class JavaClasses; 1003 1004 private: 1005 static int _vmentry_offset; // type is MemberName 1006 1007 static void compute_offsets(); 1008 1009 public: 1010 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1011 1012 // Accessors 1013 static oop vmentry(oop lform); 1014 static void set_vmentry(oop lform, oop invoker); 1015 1016 // Testers 1017 static bool is_subclass(Klass* klass) { 1018 return SystemDictionary::LambdaForm_klass() != NULL && 1019 klass->is_subclass_of(SystemDictionary::LambdaForm_klass()); 1020 } 1021 static bool is_instance(oop obj); 1022 1023 // Accessors for code generation: 1024 static int vmentry_offset_in_bytes() { return _vmentry_offset; } 1025 }; 1026 1027 1028 // Interface to java.lang.invoke.MemberName objects 1029 // (These are a private interface for Java code to query the class hierarchy.) 1030 1031 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \ 1032 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \ 1033 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false) 1034 1035 class java_lang_invoke_ResolvedMethodName : AllStatic { 1036 friend class JavaClasses; 1037 1038 static int _vmtarget_offset; 1039 static int _vmholder_offset; 1040 1041 static void compute_offsets(); 1042 public: 1043 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1044 1045 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } 1046 1047 static Method* vmtarget(oop resolved_method); 1048 static void set_vmtarget(oop resolved_method, Method* method); 1049 1050 // find or create resolved member name 1051 static oop find_resolved_method(const methodHandle& m, TRAPS); 1052 1053 static bool is_instance(oop resolved_method); 1054 }; 1055 1056 1057 #define MEMBERNAME_INJECTED_FIELDS(macro) \ 1058 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) 1059 1060 1061 class java_lang_invoke_MemberName: AllStatic { 1062 friend class JavaClasses; 1063 1064 private: 1065 // From java.lang.invoke.MemberName: 1066 // private Class<?> clazz; // class in which the method is defined 1067 // private String name; // may be null if not yet materialized 1068 // private Object type; // may be null if not yet materialized 1069 // private int flags; // modifier bits; see reflect.Modifier 1070 // private ResolvedMethodName method; // holds VM-specific target value 1071 // private intptr_t vmindex; // member index within class or interface 1072 static int _clazz_offset; 1073 static int _name_offset; 1074 static int _type_offset; 1075 static int _flags_offset; 1076 static int _method_offset; 1077 static int _vmindex_offset; 1078 1079 static void compute_offsets(); 1080 1081 public: 1082 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1083 // Accessors 1084 static oop clazz(oop mname); 1085 static void set_clazz(oop mname, oop clazz); 1086 1087 static oop type(oop mname); 1088 static void set_type(oop mname, oop type); 1089 1090 static oop name(oop mname); 1091 static void set_name(oop mname, oop name); 1092 1093 static int flags(oop mname); 1094 static void set_flags(oop mname, int flags); 1095 1096 // Link through ResolvedMethodName field to get Method* 1097 static Method* vmtarget(oop mname); 1098 static void set_method(oop mname, oop method); 1099 1100 static intptr_t vmindex(oop mname); 1101 static void set_vmindex(oop mname, intptr_t index); 1102 1103 // Testers 1104 static bool is_subclass(Klass* klass) { 1105 return klass->is_subclass_of(SystemDictionary::MemberName_klass()); 1106 } 1107 static bool is_instance(oop obj); 1108 1109 static bool is_method(oop obj); 1110 1111 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): 1112 enum { 1113 MN_IS_METHOD = 0x00010000, // method (not constructor) 1114 MN_IS_CONSTRUCTOR = 0x00020000, // constructor 1115 MN_IS_FIELD = 0x00040000, // field 1116 MN_IS_TYPE = 0x00080000, // nested type 1117 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected 1118 MN_REFERENCE_KIND_SHIFT = 24, // refKind 1119 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, 1120 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers: 1121 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes 1122 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces 1123 }; 1124 1125 // Accessors for code generation: 1126 static int clazz_offset_in_bytes() { return _clazz_offset; } 1127 static int type_offset_in_bytes() { return _type_offset; } 1128 static int name_offset_in_bytes() { return _name_offset; } 1129 static int flags_offset_in_bytes() { return _flags_offset; } 1130 static int method_offset_in_bytes() { return _method_offset; } 1131 static int vmindex_offset_in_bytes() { return _vmindex_offset; } 1132 }; 1133 1134 1135 // Interface to java.lang.invoke.MethodType objects 1136 1137 class java_lang_invoke_MethodType: AllStatic { 1138 friend class JavaClasses; 1139 1140 private: 1141 static int _rtype_offset; 1142 static int _ptypes_offset; 1143 1144 static void compute_offsets(); 1145 1146 public: 1147 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1148 // Accessors 1149 static oop rtype(oop mt); 1150 static objArrayOop ptypes(oop mt); 1151 1152 static oop ptype(oop mt, int index); 1153 static int ptype_count(oop mt); 1154 1155 static int ptype_slot_count(oop mt); // extra counts for long/double 1156 static int rtype_slot_count(oop mt); // extra counts for long/double 1157 1158 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS); 1159 static void print_signature(oop mt, outputStream* st); 1160 1161 static bool is_instance(oop obj); 1162 1163 static bool equals(oop mt1, oop mt2); 1164 1165 // Accessors for code generation: 1166 static int rtype_offset_in_bytes() { return _rtype_offset; } 1167 static int ptypes_offset_in_bytes() { return _ptypes_offset; } 1168 }; 1169 1170 1171 // Interface to java.lang.invoke.CallSite objects 1172 1173 class java_lang_invoke_CallSite: AllStatic { 1174 friend class JavaClasses; 1175 1176 private: 1177 static int _target_offset; 1178 static int _context_offset; 1179 1180 static void compute_offsets(); 1181 1182 public: 1183 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1184 // Accessors 1185 static oop target( oop site); 1186 static void set_target( oop site, oop target); 1187 static void set_target_volatile( oop site, oop target); 1188 1189 static oop context(oop site); 1190 1191 // Testers 1192 static bool is_subclass(Klass* klass) { 1193 return klass->is_subclass_of(SystemDictionary::CallSite_klass()); 1194 } 1195 static bool is_instance(oop obj); 1196 1197 // Accessors for code generation: 1198 static int target_offset_in_bytes() { return _target_offset; } 1199 }; 1200 1201 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects 1202 1203 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \ 1204 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) 1205 1206 class DependencyContext; 1207 1208 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic { 1209 friend class JavaClasses; 1210 1211 private: 1212 static int _vmdependencies_offset; 1213 1214 static void compute_offsets(); 1215 1216 public: 1217 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1218 // Accessors 1219 static DependencyContext vmdependencies(oop context); 1220 1221 // Testers 1222 static bool is_subclass(Klass* klass) { 1223 return klass->is_subclass_of(SystemDictionary::Context_klass()); 1224 } 1225 static bool is_instance(oop obj); 1226 }; 1227 1228 // Interface to java.security.AccessControlContext objects 1229 1230 class java_security_AccessControlContext: AllStatic { 1231 private: 1232 // Note that for this class the layout changed between JDK1.2 and JDK1.3, 1233 // so we compute the offsets at startup rather than hard-wiring them. 1234 static int _context_offset; 1235 static int _privilegedContext_offset; 1236 static int _isPrivileged_offset; 1237 static int _isAuthorized_offset; 1238 1239 static void compute_offsets(); 1240 public: 1241 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1242 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); 1243 1244 static bool is_authorized(Handle context); 1245 1246 // Debugging/initialization 1247 friend class JavaClasses; 1248 }; 1249 1250 1251 // Interface to java.lang.ClassLoader objects 1252 1253 #define CLASSLOADER_INJECTED_FIELDS(macro) \ 1254 macro(java_lang_ClassLoader, loader_data, intptr_signature, false) 1255 1256 class java_lang_ClassLoader : AllStatic { 1257 private: 1258 static int _loader_data_offset; 1259 static bool offsets_computed; 1260 static int parent_offset; 1261 static int parallelCapable_offset; 1262 static int name_offset; 1263 static int nameAndId_offset; 1264 static int unnamedModule_offset; 1265 1266 public: 1267 static void compute_offsets(); 1268 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1269 1270 static ClassLoaderData* loader_data_acquire(oop loader); 1271 static ClassLoaderData* loader_data_raw(oop loader); 1272 static void release_set_loader_data(oop loader, ClassLoaderData* new_data); 1273 1274 static oop parent(oop loader); 1275 static oop name(oop loader); 1276 static oop nameAndId(oop loader); 1277 static bool isAncestor(oop loader, oop cl); 1278 1279 // Support for parallelCapable field 1280 static bool parallelCapable(oop the_class_mirror); 1281 1282 static bool is_trusted_loader(oop loader); 1283 1284 // Return true if this is one of the class loaders associated with 1285 // the generated bytecodes for reflection. 1286 static bool is_reflection_class_loader(oop loader); 1287 1288 // Fix for 4474172 1289 static oop non_reflection_class_loader(oop loader); 1290 1291 // Testers 1292 static bool is_subclass(Klass* klass) { 1293 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass()); 1294 } 1295 static bool is_instance(oop obj); 1296 1297 static oop unnamedModule(oop loader); 1298 1299 // Debugging 1300 friend class JavaClasses; 1301 friend class ClassFileParser; // access to number_of_fake_fields 1302 }; 1303 1304 1305 // Interface to java.lang.System objects 1306 1307 class java_lang_System : AllStatic { 1308 private: 1309 static int static_in_offset; 1310 static int static_out_offset; 1311 static int static_err_offset; 1312 static int static_security_offset; 1313 1314 public: 1315 static int in_offset_in_bytes(); 1316 static int out_offset_in_bytes(); 1317 static int err_offset_in_bytes(); 1318 1319 static bool has_security_manager(); 1320 1321 static void compute_offsets(); 1322 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1323 1324 // Debugging 1325 friend class JavaClasses; 1326 }; 1327 1328 1329 // Interface to java.lang.StackTraceElement objects 1330 1331 class java_lang_StackTraceElement: AllStatic { 1332 private: 1333 static int declaringClassObject_offset; 1334 static int classLoaderName_offset; 1335 static int moduleName_offset; 1336 static int moduleVersion_offset; 1337 static int declaringClass_offset; 1338 static int methodName_offset; 1339 static int fileName_offset; 1340 static int lineNumber_offset; 1341 1342 // Setters 1343 static void set_classLoaderName(oop element, oop value); 1344 static void set_moduleName(oop element, oop value); 1345 static void set_moduleVersion(oop element, oop value); 1346 static void set_declaringClass(oop element, oop value); 1347 static void set_methodName(oop element, oop value); 1348 static void set_fileName(oop element, oop value); 1349 static void set_lineNumber(oop element, int value); 1350 static void set_declaringClassObject(oop element, oop value); 1351 1352 public: 1353 // Create an instance of StackTraceElement 1354 static oop create(const methodHandle& method, int bci, TRAPS); 1355 1356 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method, 1357 int version, int bci, Symbol* name, TRAPS); 1358 1359 static void compute_offsets(); 1360 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1361 1362 // Debugging 1363 friend class JavaClasses; 1364 }; 1365 1366 1367 class Backtrace: AllStatic { 1368 public: 1369 // Helper backtrace functions to store bci|version together. 1370 static int merge_bci_and_version(int bci, int version); 1371 static int merge_mid_and_cpref(int mid, int cpref); 1372 static int bci_at(unsigned int merged); 1373 static int version_at(unsigned int merged); 1374 static int mid_at(unsigned int merged); 1375 static int cpref_at(unsigned int merged); 1376 static int get_line_number(const methodHandle& method, int bci); 1377 static Symbol* get_source_file_name(InstanceKlass* holder, int version); 1378 1379 // Debugging 1380 friend class JavaClasses; 1381 }; 1382 1383 // Interface to java.lang.StackFrameInfo objects 1384 1385 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \ 1386 macro(java_lang_StackFrameInfo, version, short_signature, false) 1387 1388 class java_lang_StackFrameInfo: AllStatic { 1389 private: 1390 static int _memberName_offset; 1391 static int _bci_offset; 1392 static int _version_offset; 1393 1394 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS); 1395 1396 public: 1397 // Setters 1398 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS); 1399 static void set_bci(oop info, int value); 1400 1401 static void set_version(oop info, short value); 1402 1403 static void compute_offsets(); 1404 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1405 1406 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS); 1407 1408 // Debugging 1409 friend class JavaClasses; 1410 }; 1411 1412 class java_lang_LiveStackFrameInfo: AllStatic { 1413 private: 1414 static int _monitors_offset; 1415 static int _locals_offset; 1416 static int _operands_offset; 1417 static int _mode_offset; 1418 1419 public: 1420 static void set_monitors(oop info, oop value); 1421 static void set_locals(oop info, oop value); 1422 static void set_operands(oop info, oop value); 1423 static void set_mode(oop info, int value); 1424 1425 static void compute_offsets(); 1426 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1427 1428 // Debugging 1429 friend class JavaClasses; 1430 }; 1431 1432 // Interface to java.lang.AssertionStatusDirectives objects 1433 1434 class java_lang_AssertionStatusDirectives: AllStatic { 1435 private: 1436 static int classes_offset; 1437 static int classEnabled_offset; 1438 static int packages_offset; 1439 static int packageEnabled_offset; 1440 static int deflt_offset; 1441 1442 public: 1443 // Setters 1444 static void set_classes(oop obj, oop val); 1445 static void set_classEnabled(oop obj, oop val); 1446 static void set_packages(oop obj, oop val); 1447 static void set_packageEnabled(oop obj, oop val); 1448 static void set_deflt(oop obj, bool val); 1449 1450 static void compute_offsets(); 1451 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1452 1453 // Debugging 1454 friend class JavaClasses; 1455 }; 1456 1457 1458 class java_nio_Buffer: AllStatic { 1459 private: 1460 static int _limit_offset; 1461 1462 public: 1463 static int limit_offset(); 1464 static void compute_offsets(); 1465 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1466 }; 1467 1468 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { 1469 private: 1470 static int _owner_offset; 1471 public: 1472 static void compute_offsets(); 1473 static oop get_owner_threadObj(oop obj); 1474 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN; 1475 }; 1476 1477 // Use to declare fields that need to be injected into Java classes 1478 // for the JVM to use. The name_index and signature_index are 1479 // declared in vmSymbols. The may_be_java flag is used to declare 1480 // fields that might already exist in Java but should be injected if 1481 // they don't. Otherwise the field is unconditionally injected and 1482 // the JVM uses the injected one. This is to ensure that name 1483 // collisions don't occur. In general may_be_java should be false 1484 // unless there's a good reason. 1485 1486 class InjectedField { 1487 public: 1488 const SystemDictionary::WKID klass_id; 1489 const vmSymbols::SID name_index; 1490 const vmSymbols::SID signature_index; 1491 const bool may_be_java; 1492 1493 1494 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); } 1495 Symbol* name() const { return lookup_symbol(name_index); } 1496 Symbol* signature() const { return lookup_symbol(signature_index); } 1497 1498 int compute_offset(); 1499 1500 // Find the Symbol for this index 1501 static Symbol* lookup_symbol(int symbol_index) { 1502 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index); 1503 } 1504 }; 1505 1506 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \ 1507 klass##_##name##_enum, 1508 1509 #define ALL_INJECTED_FIELDS(macro) \ 1510 CLASS_INJECTED_FIELDS(macro) \ 1511 CLASSLOADER_INJECTED_FIELDS(macro) \ 1512 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \ 1513 MEMBERNAME_INJECTED_FIELDS(macro) \ 1514 CALLSITECONTEXT_INJECTED_FIELDS(macro) \ 1515 STACKFRAMEINFO_INJECTED_FIELDS(macro) \ 1516 MODULE_INJECTED_FIELDS(macro) 1517 1518 // Interface to hard-coded offset checking 1519 1520 class JavaClasses : AllStatic { 1521 private: 1522 1523 static InjectedField _injected_fields[]; 1524 1525 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; 1526 public: 1527 enum InjectedFieldID { 1528 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM) 1529 MAX_enum 1530 }; 1531 1532 static int compute_injected_offset(InjectedFieldID id); 1533 1534 static void compute_hard_coded_offsets(); 1535 static void compute_offsets(); 1536 static void check_offsets() PRODUCT_RETURN; 1537 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN; 1538 static InjectedField* get_injected(Symbol* class_name, int* field_count); 1539 }; 1540 1541 #undef DECLARE_INJECTED_FIELD_ENUM 1542 1543 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP