1 /*
2 * Copyright (c) 1997, 2025, 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/vmClasses.hpp"
29 #include "oops/instanceKlass.hpp"
30 #include "oops/oopsHierarchy.hpp"
31 #include "oops/symbol.hpp"
32 #include "runtime/handles.hpp"
33 #include "runtime/os.hpp"
34 #include "utilities/macros.hpp"
35 #include "utilities/utf8.hpp"
36 #include "utilities/vmEnums.hpp"
37
38 class JvmtiThreadState;
39 class RecordComponent;
40 class SerializeClosure;
41 class ObjectWaiter;
42 class ObjectMonitor;
43
44 #define CHECK_INIT(offset) assert(offset != 0, "should be initialized"); return offset;
45
46 // Interface to java.lang.Object objects
47
48 class java_lang_Object : AllStatic {
49 public:
50 static void register_natives(TRAPS);
51 };
52
53 // Interface to java.lang.String objects
54
55 // The flags field is a collection of bits representing boolean values used
56 // internally by the VM.
57 #define STRING_INJECTED_FIELDS(macro) \
58 macro(java_lang_String, flags, byte_signature, false)
59
60 class java_lang_String : AllStatic {
61 private:
62 static int _value_offset;
63 static int _hash_offset;
64 static int _hashIsZero_offset;
65 static int _coder_offset;
66 static int _flags_offset;
67
68 static bool _initialized;
69
70 static Handle basic_create(int length, bool byte_arr, TRAPS);
71
72 static inline void set_coder(oop string, jbyte coder);
73
74 // Bitmasks for values in the injected flags field.
75 static const uint8_t _deduplication_forbidden_mask = 1 << 0;
76 static const uint8_t _deduplication_requested_mask = 1 << 1;
77
78 static int flags_offset() { CHECK_INIT(_flags_offset); }
79 // Return the address of the injected flags field.
80 static inline uint8_t* flags_addr(oop java_string);
81 // Test whether the designated bit of the injected flags field is set.
82 static inline bool is_flag_set(oop java_string, uint8_t flag_mask);
83 // Atomically test and set the designated bit of the injected flags field,
84 // returning true if the bit was already set.
85 static bool test_and_set_flag(oop java_string, uint8_t flag_mask);
86
87 static inline unsigned int hash_code_impl(oop java_string, bool update);
88
89 public:
90
91 // Coders
92 enum Coder {
93 CODER_LATIN1 = 0,
94 CODER_UTF16 = 1
95 };
96
97 static void compute_offsets();
98 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
99
100 // Instance creation
101 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
102 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
103 static Handle create_from_str(const char* utf8_str, TRAPS);
104 static oop create_oop_from_str(const char* utf8_str, TRAPS);
105 static Handle create_from_symbol(const Symbol* symbol, TRAPS);
106 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
107
108 static void set_compact_strings(bool value);
109
110 static int value_offset() { CHECK_INIT(_value_offset); }
111 static int coder_offset() { CHECK_INIT(_coder_offset); }
112
113 static inline void set_value(oop string, typeArrayOop buffer);
114
115 // Set the deduplication_forbidden flag true. This flag is sticky; once
116 // set it never gets cleared. This is set when a String is interned in
117 // the StringTable, to prevent string deduplication from changing the
118 // String's value array.
119 static inline void set_deduplication_forbidden(oop java_string);
120
121 // Test and set the deduplication_requested flag. Returns the old value
122 // of the flag. This flag is sticky; once set it never gets cleared.
123 // Some GCs may use this flag when deciding whether to request
124 // deduplication of a String, to avoid multiple requests for the same
125 // object.
126 static inline bool test_and_set_deduplication_requested(oop java_string);
127
128 // Accessors
129 static inline typeArrayOop value(oop java_string);
130 static inline typeArrayOop value_no_keepalive(oop java_string);
131 static inline bool hash_is_set(oop string);
132 static inline bool is_latin1(oop java_string);
133 static inline bool deduplication_forbidden(oop java_string);
134 static inline bool deduplication_requested(oop java_string);
135 static inline int length(oop java_string);
136 static inline int length(oop java_string, typeArrayOop string_value);
137 static size_t utf8_length(oop java_string);
138 static size_t utf8_length(oop java_string, typeArrayOop string_value);
139 // Legacy variants that truncate the length if needed
140 static int utf8_length_as_int(oop java_string);
141 static int utf8_length_as_int(oop java_string, typeArrayOop string_value);
142
143 // String converters
144 static char* as_utf8_string(oop java_string);
145 // `length` is set to the length of the utf8 sequence.
146 static char* as_utf8_string(oop java_string, size_t& length);
147 static char* as_utf8_string_full(oop java_string, char* buf, size_t buflen, size_t& length);
148 static char* as_utf8_string(oop java_string, char* buf, size_t buflen);
149 static char* as_utf8_string(oop java_string, int start, int len);
150 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, size_t buflen);
151 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, size_t buflen);
152 static char* as_platform_dependent_str(Handle java_string, TRAPS);
153 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
154 static jchar* as_unicode_string_or_null(oop java_string, int& length);
155 // produce an ascii string with all other values quoted using \u####
156 static char* as_quoted_ascii(oop java_string);
157
158 // Compute the hash value for a java.lang.String object which would
159 // contain the characters passed in.
160 //
161 // As the hash value used by the String object itself, in
162 // String.hashCode(). This value is normally calculated in Java code
163 // in the String.hashCode method(), but is precomputed for String
164 // objects in the shared archive file.
165 // hash P(31) from Kernighan & Ritchie
166 //
167 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
168 static unsigned int hash_code(const jchar* s, int len) {
169 unsigned int h = 0;
170 while (len-- > 0) {
171 h = 31*h + (unsigned int) *s;
172 s++;
173 }
174 return h;
175 }
176
177 static unsigned int hash_code(const jbyte* s, int len) {
178 unsigned int h = 0;
179 while (len-- > 0) {
180 h = 31*h + (((unsigned int) *s) & 0xFF);
181 s++;
182 }
183 return h;
184 }
185
186 static unsigned int hash_code(const char* utf8_str, size_t utf8_len) {
187 unsigned int h = 0;
188 int unicode_length = UTF8::unicode_length(utf8_str, utf8_len);
189
190 jchar c;
191 while (unicode_length-- > 0) {
192 utf8_str = UTF8::next(utf8_str, &c);
193 h = 31 * h + ((unsigned int)c);
194 }
195 return h;
196 }
197
198 static unsigned int hash_code(oop java_string);
199 static unsigned int hash_code_noupdate(oop java_string);
200
201 // Compare strings (of different types/encodings), length is the string (array) length
202 static bool equals(oop java_string, const jchar* chars, int len);
203 static bool equals(oop java_string, const char* utf8_str, size_t utf8_len);
204 static bool equals(oop str1, oop str2);
205 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
206
207 // Conversion between '.' and '/' formats, and allocate a String from the result.
208 static Handle externalize_classname(Symbol* java_name, TRAPS);
209
210 // Conversion
211 static Symbol* as_symbol(oop java_string);
212 static Symbol* as_symbol_or_null(oop java_string);
213
214 // Tester
215 static inline bool is_instance(oop obj);
216
217 // Debugging
218 static void print(oop java_string, outputStream* st, int max_length = MaxStringPrintSize);
219 friend class JavaClasses;
220 friend class StringTable;
221 };
222
223
224 // Interface to java.lang.Class objects
225
226 #define CLASS_INJECTED_FIELDS(macro) \
227 macro(java_lang_Class, klass, intptr_signature, false) \
228 macro(java_lang_Class, array_klass, intptr_signature, false) \
229 macro(java_lang_Class, oop_size, int_signature, false) \
230 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
231 macro(java_lang_Class, source_file, object_signature, false) \
232 macro(java_lang_Class, init_lock, object_signature, false)
233
234 class java_lang_Class : AllStatic {
235 friend class VMStructs;
236 friend class JVMCIVMStructs;
237 friend class HeapShared;
238
239 private:
240
241 // The fake offsets are added by the class loader when java.lang.Class is loaded
242
243 static int _klass_offset;
244 static int _array_klass_offset;
245
246 static int _oop_size_offset;
247 static int _static_oop_field_count_offset;
248
249 static int _protection_domain_offset;
250 static int _init_lock_offset;
251 static int _signers_offset;
252 static int _class_loader_offset;
253 static int _module_offset;
254 static int _component_mirror_offset;
255 static int _name_offset;
256 static int _source_file_offset;
257 static int _classData_offset;
258 static int _classRedefinedCount_offset;
259 static int _reflectionData_offset;
260 static int _modifiers_offset;
261 static int _is_primitive_offset;
262 static int _raw_access_flags_offset;
263
264 static bool _offsets_computed;
265
266 static GrowableArray<Klass*>* _fixup_mirror_list;
267 static GrowableArray<Klass*>* _fixup_module_field_list;
268
269 static void set_init_lock(oop java_class, oop init_lock);
270 static void set_protection_domain(oop java_class, oop protection_domain);
271 static void set_class_loader(oop java_class, oop class_loader);
272 static void set_component_mirror(oop java_class, oop comp_mirror);
273 static void initialize_mirror_fields(InstanceKlass* ik, Handle mirror, Handle protection_domain,
274 Handle classData, TRAPS);
275 static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
276 public:
277 static void allocate_fixup_lists();
278 static void compute_offsets();
279
280 // Instance creation
281 static void allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
282 Handle& mirror, Handle& comp_mirror, TRAPS); // returns mirror and comp_mirror
283 static void create_mirror(Klass* k, Handle class_loader, Handle module,
284 Handle protection_domain, Handle classData, TRAPS);
285 static void fixup_mirror(Klass* k, TRAPS);
286 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
287
288 // Archiving
289 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
290 static void create_scratch_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
291 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
292 Handle protection_domain,
293 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
294
295 static void fixup_module_field(Klass* k, Handle module);
296
297 // Conversion -- java_class must not be null. The return value is null only if java_class is a primitive type.
298 static Klass* as_Klass(oop java_class);
299 static InstanceKlass* as_InstanceKlass(oop java_class);
300
301 static void set_klass(oop java_class, Klass* klass);
302 static BasicType as_BasicType(oop java_class, Klass** reference_klass = nullptr);
303 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
304 static void print_signature(oop java_class, outputStream *st);
305 static const char* as_external_name(oop java_class);
306 // Testing
307 static bool is_instance(oop obj);
308
309 static bool is_primitive(oop java_class);
310 static void set_is_primitive(oop java_class);
311 static BasicType primitive_type(oop java_class);
312 static oop primitive_mirror(BasicType t);
313 // JVM_NewArray support
314 static Klass* array_klass_acquire(oop java_class);
315 static void release_set_array_klass(oop java_class, Klass* klass);
316 // compiler support for class operations
317 static int klass_offset() { CHECK_INIT(_klass_offset); }
318 static int array_klass_offset() { CHECK_INIT(_array_klass_offset); }
319 // Support for classRedefinedCount field
320 static int classRedefinedCount(oop the_class_mirror);
321 static void set_classRedefinedCount(oop the_class_mirror, int value);
322
323 // Support for embedded per-class oops
324 static oop protection_domain(oop java_class);
325 static oop init_lock(oop java_class);
326 static void clear_init_lock(oop java_class) {
327 set_init_lock(java_class, nullptr);
328 }
329 static oop component_mirror(oop java_class);
330 static int component_mirror_offset() { return _component_mirror_offset; }
331 static objArrayOop signers(oop java_class);
332 static oop class_data(oop java_class);
333 static void set_class_data(oop java_class, oop classData);
334 static void set_reflection_data(oop java_class, oop reflection_data);
335 static int reflection_data_offset() { return _reflectionData_offset; }
336
337 static oop class_loader(oop java_class);
338 static void set_module(oop java_class, oop module);
339 static oop module(oop java_class);
340
341 static oop name(Handle java_class, TRAPS);
342
343 static oop source_file(oop java_class);
344 static void set_source_file(oop java_class, oop source_file);
345
346 static int modifiers(oop java_class);
347 static void set_modifiers(oop java_class, u2 value);
348
349 static int raw_access_flags(oop java_class);
350 static void set_raw_access_flags(oop java_class, u2 value);
351
352 static size_t oop_size(oop java_class);
353 static void set_oop_size(HeapWord* java_class, size_t size);
354 static int static_oop_field_count(oop java_class);
355 static void set_static_oop_field_count(oop java_class, int size);
356
357 static GrowableArray<Klass*>* fixup_mirror_list() {
358 return _fixup_mirror_list;
359 }
360 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
361 _fixup_mirror_list = v;
362 }
363
364 static GrowableArray<Klass*>* fixup_module_field_list() {
365 return _fixup_module_field_list;
366 }
367 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
368 _fixup_module_field_list = v;
369 }
370
371 // Debugging
372 friend class JavaClasses;
373 };
374
375 // Interface to java.lang.Thread objects
376
377 #define THREAD_INJECTED_FIELDS(macro) \
378 macro(java_lang_Thread, jvmti_thread_state, intptr_signature, false) \
379 macro(java_lang_Thread, jvmti_VTMS_transition_disable_count, int_signature, false) \
380 macro(java_lang_Thread, jvmti_is_in_VTMS_transition, bool_signature, false) \
381 JFR_ONLY(macro(java_lang_Thread, jfr_epoch, short_signature, false))
382
383 class java_lang_Thread : AllStatic {
384 friend class java_lang_VirtualThread;
385 friend class JVMCIVMStructs;
386 private:
387 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
388 // so we compute the offsets at startup rather than hard-wiring them.
389 static int _holder_offset;
390 static int _name_offset;
391 static int _contextClassLoader_offset;
392 static int _eetop_offset;
393 static int _jvmti_thread_state_offset;
394 static int _jvmti_VTMS_transition_disable_count_offset;
395 static int _jvmti_is_in_VTMS_transition_offset;
396 static int _interrupted_offset;
397 static int _interruptLock_offset;
398 static int _tid_offset;
399 static int _continuation_offset;
400 static int _park_blocker_offset;
401 static int _scopedValueBindings_offset;
402 JFR_ONLY(static int _jfr_epoch_offset;)
403
404 static void compute_offsets();
405
406 public:
407 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
408
409 // Returns the JavaThread associated with the thread obj
410 static JavaThread* thread(oop java_thread);
411 static JavaThread* thread_acquire(oop java_thread);
412 // Set JavaThread for instance
413 static void set_thread(oop java_thread, JavaThread* thread);
414 static void release_set_thread(oop java_thread, JavaThread* thread);
415 // FieldHolder
416 static oop holder(oop java_thread);
417 // interruptLock
418 static oop interrupt_lock(oop java_thread);
419 // Interrupted status
420 static bool interrupted(oop java_thread);
421 static void set_interrupted(oop java_thread, bool val);
422 // Name
423 static oop name(oop java_thread);
424 static void set_name(oop java_thread, oop name);
425 // Priority
426 static ThreadPriority priority(oop java_thread);
427 static void set_priority(oop java_thread, ThreadPriority priority);
428 // Thread group
429 static oop threadGroup(oop java_thread);
430 // Alive (NOTE: this is not really a field, but provides the correct
431 // definition without doing a Java call)
432 static bool is_alive(oop java_thread);
433 // Daemon
434 static bool is_daemon(oop java_thread);
435 static void set_daemon(oop java_thread);
436 // Context ClassLoader
437 static oop context_class_loader(oop java_thread);
438 // Stack size hint
439 static jlong stackSize(oop java_thread);
440 // Thread ID
441 static int64_t thread_id(oop java_thread);
442 static ByteSize thread_id_offset();
443 // Continuation
444 static inline oop continuation(oop java_thread);
445
446 static JvmtiThreadState* jvmti_thread_state(oop java_thread);
447 static void set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state);
448 static int VTMS_transition_disable_count(oop java_thread);
449 static void inc_VTMS_transition_disable_count(oop java_thread);
450 static void dec_VTMS_transition_disable_count(oop java_thread);
451 static bool is_in_VTMS_transition(oop java_thread);
452 static void set_is_in_VTMS_transition(oop java_thread, bool val);
453 static int is_in_VTMS_transition_offset();
454
455 // Clear all scoped value bindings on error
456 static void clear_scopedValueBindings(oop java_thread);
457
458 // Blocker object responsible for thread parking
459 static oop park_blocker(oop java_thread);
460
461 // Write thread status info to threadStatus field of java.lang.Thread.
462 static void set_thread_status(oop java_thread_oop, JavaThreadStatus status);
463 // Read thread status info from threadStatus field of java.lang.Thread.
464 static JavaThreadStatus get_thread_status(oop java_thread_oop);
465
466 static const char* thread_status_name(oop java_thread_oop);
467
468 // Fill in current stack trace, can cause GC
469 static oop async_get_stack_trace(jobject jthread, TRAPS);
470 static oop get_thread_snapshot(jobject jthread, TRAPS);
471
472 JFR_ONLY(static u2 jfr_epoch(oop java_thread);)
473 JFR_ONLY(static void set_jfr_epoch(oop java_thread, u2 epoch);)
474 JFR_ONLY(static int jfr_epoch_offset() { CHECK_INIT(_jfr_epoch_offset); })
475
476 // Debugging
477 friend class JavaClasses;
478 };
479
480 // Interface to java.lang.Thread$FieldHolder objects
481
482 class java_lang_Thread_FieldHolder : AllStatic {
483 private:
484 static int _group_offset;
485 static int _priority_offset;
486 static int _stackSize_offset;
487 static int _daemon_offset;
488 static int _thread_status_offset;
489
490 static void compute_offsets();
491
492 public:
493 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
494
495 static oop threadGroup(oop holder);
496
497 static ThreadPriority priority(oop holder);
498 static void set_priority(oop holder, ThreadPriority priority);
499
500 static jlong stackSize(oop holder);
501
502 static bool is_daemon(oop holder);
503 static void set_daemon(oop holder, bool val);
504
505 static void set_thread_status(oop holder, JavaThreadStatus status);
506 static JavaThreadStatus get_thread_status(oop holder);
507
508 friend class JavaClasses;
509 };
510
511 // Interface to java.lang.Thread$Constants objects
512
513 class java_lang_Thread_Constants : AllStatic {
514 private:
515 static int _static_VTHREAD_GROUP_offset;
516 static int _static_NOT_SUPPORTED_CLASSLOADER_offset;
517
518 static void compute_offsets();
519 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
520
521 public:
522 static oop get_VTHREAD_GROUP();
523
524 friend class JavaClasses;
525 };
526
527 // Interface to java.lang.ThreadGroup objects
528
529 class java_lang_ThreadGroup : AllStatic {
530 private:
531 static int _parent_offset;
532 static int _name_offset;
533 static int _maxPriority_offset;
534 static int _daemon_offset;
535
536 static void compute_offsets();
537 public:
538 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
539
540 // parent ThreadGroup
541 static oop parent(oop java_thread_group);
542 // name
543 static const char* name(oop java_thread_group);
544 // maxPriority in group
545 static ThreadPriority maxPriority(oop java_thread_group);
546 // Daemon
547 static bool is_daemon(oop java_thread_group);
548
549 // Debugging
550 friend class JavaClasses;
551 };
552
553
554 // Interface to java.lang.VirtualThread objects
555 #define VTHREAD_INJECTED_FIELDS(macro) \
556 macro(java_lang_VirtualThread, objectWaiter, intptr_signature, false)
557
558 class java_lang_VirtualThread : AllStatic {
559 private:
560 static int static_vthread_scope_offset;
561 static int _carrierThread_offset;
562 static int _continuation_offset;
563 static int _state_offset;
564 static int _next_offset;
565 static int _onWaitingList_offset;
566 static int _notified_offset;
567 static int _interruptible_wait_offset;
568 static int _recheckInterval_offset;
569 static int _timeout_offset;
570 static int _objectWaiter_offset;
571 JFR_ONLY(static int _jfr_epoch_offset;)
572 public:
573 enum {
574 NEW = 0,
575 STARTED = 1,
576 RUNNING = 2,
577 PARKING = 3,
578 PARKED = 4,
579 PINNED = 5,
580 TIMED_PARKING = 6,
581 TIMED_PARKED = 7,
582 TIMED_PINNED = 8,
583 UNPARKED = 9,
584 YIELDING = 10,
585 YIELDED = 11,
586 BLOCKING = 12,
587 BLOCKED = 13,
588 UNBLOCKED = 14,
589 WAITING = 15,
590 WAIT = 16, // waiting in Object.wait
591 TIMED_WAITING = 17,
592 TIMED_WAIT = 18, // waiting in timed-Object.wait
593 TERMINATED = 99,
594
595 // additional state bits
596 SUSPENDED = 1 << 8, // suspended when unmounted
597 };
598
599 static void compute_offsets();
600 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
601
602 // Testers
603 static bool is_subclass(Klass* klass) {
604 return klass->is_subclass_of(vmClasses::VirtualThread_klass());
605 }
606 static bool is_instance(oop obj);
607
608 static oop vthread_scope();
609 static oop carrier_thread(oop vthread);
610 static oop continuation(oop vthread);
611 static int state(oop vthread);
612 static void set_state(oop vthread, int state);
613 static int cmpxchg_state(oop vthread, int old_state, int new_state);
614 static oop next(oop vthread);
615 static void set_next(oop vthread, oop next_vthread);
616 static bool set_onWaitingList(oop vthread, OopHandle& list_head);
617 static jlong timeout(oop vthread);
618 static void set_timeout(oop vthread, jlong value);
619 static void set_notified(oop vthread, jboolean value);
620 static void set_interruptible_wait(oop vthread, jboolean value);
621 static bool is_preempted(oop vthread);
622 static JavaThreadStatus map_state_to_thread_status(int state);
623
624 static inline ObjectWaiter* objectWaiter(oop vthread);
625 static inline void set_objectWaiter(oop vthread, ObjectWaiter* waiter);
626 static ObjectMonitor* current_pending_monitor(oop vthread);
627 static ObjectMonitor* current_waiting_monitor(oop vthread);
628 };
629
630
631 // Interface to java.lang.Throwable objects
632
633 class java_lang_Throwable: AllStatic {
634 friend class BacktraceBuilder;
635 friend class BacktraceIterator;
636
637 private:
638 // Trace constants
639 enum {
640 trace_methods_offset = 0,
641 trace_bcis_offset = 1,
642 trace_mirrors_offset = 2,
643 trace_names_offset = 3,
644 trace_conts_offset = 4,
645 trace_next_offset = 5,
646 trace_hidden_offset = 6,
647 trace_size = 7,
648 trace_chunk_size = 32
649 };
650
651 static int _backtrace_offset;
652 static int _detailMessage_offset;
653 static int _stackTrace_offset;
654 static int _depth_offset;
655 static int _cause_offset;
656 static int _static_unassigned_stacktrace_offset;
657
658 // StackTrace (programmatic access, new since 1.4)
659 static void clear_stacktrace(oop throwable);
660 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
661 static void set_stacktrace(oop throwable, oop st_element_array);
662 static oop unassigned_stacktrace();
663
664 public:
665 // Backtrace
666 static oop backtrace(oop throwable);
667 static void set_backtrace(oop throwable, oop value);
668 static int depth(oop throwable);
669 static void set_depth(oop throwable, int value);
670 // Message
671 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
672 static oop message(oop throwable);
673 static const char* message_as_utf8(oop throwable);
674 static void set_message(oop throwable, oop value);
675
676 static oop cause(oop throwable);
677
678 static void print_stack_element(outputStream *st, Method* method, int bci);
679
680 static void compute_offsets();
681 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
682
683 // Allocate space for backtrace (created but stack trace not filled in)
684 static void allocate_backtrace(Handle throwable, TRAPS);
685 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
686 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
687 // Fill in current stack trace, can cause GC
688 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
689 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
690
691 // Programmatic access to stack trace
692 static void get_stack_trace_elements(int depth, Handle backtrace, objArrayHandle stack_trace, TRAPS);
693
694 // For recreating class initialization error exceptions.
695 static Handle create_initialization_error(JavaThread* current, Handle throwable);
696
697 // Printing
698 static void print(oop throwable, outputStream* st);
699 static void print_stack_trace(Handle throwable, outputStream* st);
700 static void java_printStackTrace(Handle throwable, TRAPS);
701 // Debugging
702 friend class JavaClasses;
703 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
704 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
705 };
706
707
708 // Interface to java.lang.reflect.AccessibleObject objects
709
710 class java_lang_reflect_AccessibleObject: AllStatic {
711 private:
712 // Note that to reduce dependencies on the JDK we compute these
713 // offsets at run-time.
714 static int _override_offset;
715
716 static void compute_offsets();
717
718 public:
719 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
720
721 // Accessors
722 static jboolean override(oop reflect);
723 static void set_override(oop reflect, jboolean value);
724
725 // Debugging
726 friend class JavaClasses;
727 };
728
729
730 // Interface to java.lang.reflect.Method objects
731
732 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
733 private:
734 // Note that to reduce dependencies on the JDK we compute these
735 // offsets at run-time.
736 static int _clazz_offset;
737 static int _name_offset;
738 static int _returnType_offset;
739 static int _parameterTypes_offset;
740 static int _exceptionTypes_offset;
741 static int _slot_offset;
742 static int _modifiers_offset;
743 static int _signature_offset;
744 static int _annotations_offset;
745 static int _parameter_annotations_offset;
746 static int _annotation_default_offset;
747
748 static void compute_offsets();
749 public:
750 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
751
752 // Allocation
753 static Handle create(TRAPS);
754
755 // Accessors
756 static oop clazz(oop reflect);
757 static void set_clazz(oop reflect, oop value);
758
759 static void set_name(oop method, oop value);
760
761 static oop return_type(oop method);
762 static void set_return_type(oop method, oop value);
763
764 static oop parameter_types(oop method);
765 static void set_parameter_types(oop method, oop value);
766
767 static int slot(oop reflect);
768 static void set_slot(oop reflect, int value);
769
770 static void set_exception_types(oop method, oop value);
771 static void set_modifiers(oop method, int value);
772 static void set_signature(oop method, oop value);
773 static void set_annotations(oop method, oop value);
774 static void set_parameter_annotations(oop method, oop value);
775 static void set_annotation_default(oop method, oop value);
776
777 // Debugging
778 friend class JavaClasses;
779 };
780
781
782 // Interface to java.lang.reflect.Constructor objects
783
784 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
785 private:
786 // Note that to reduce dependencies on the JDK we compute these
787 // offsets at run-time.
788 static int _clazz_offset;
789 static int _parameterTypes_offset;
790 static int _exceptionTypes_offset;
791 static int _slot_offset;
792 static int _modifiers_offset;
793 static int _signature_offset;
794 static int _annotations_offset;
795 static int _parameter_annotations_offset;
796
797 static void compute_offsets();
798 public:
799 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
800
801 // Allocation
802 static Handle create(TRAPS);
803
804 // Accessors
805 static oop clazz(oop reflect);
806 static void set_clazz(oop reflect, oop value);
807
808 static oop parameter_types(oop constructor);
809 static void set_parameter_types(oop constructor, oop value);
810
811 static int slot(oop reflect);
812 static void set_slot(oop reflect, int value);
813
814 static void set_exception_types(oop constructor, oop value);
815 static void set_modifiers(oop constructor, int value);
816 static void set_signature(oop constructor, oop value);
817 static void set_annotations(oop constructor, oop value);
818 static void set_parameter_annotations(oop method, oop value);
819
820 // Debugging
821 friend class JavaClasses;
822 };
823
824
825 // Interface to java.lang.reflect.Field objects
826
827 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
828 private:
829 // Note that to reduce dependencies on the JDK we compute these
830 // offsets at run-time.
831 static int _clazz_offset;
832 static int _name_offset;
833 static int _type_offset;
834 static int _slot_offset;
835 static int _modifiers_offset;
836 static int _trusted_final_offset;
837 static int _signature_offset;
838 static int _annotations_offset;
839
840 static void compute_offsets();
841
842 public:
843 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
844
845 // Allocation
846 static Handle create(TRAPS);
847
848 // Accessors
849 static oop clazz(oop reflect);
850 static void set_clazz(oop reflect, oop value);
851
852 static oop name(oop field);
853 static void set_name(oop field, oop value);
854
855 static oop type(oop field);
856 static void set_type(oop field, oop value);
857
858 static int slot(oop reflect);
859 static void set_slot(oop reflect, int value);
860
861 static int modifiers(oop field);
862 static void set_modifiers(oop field, int value);
863
864 static void set_trusted_final(oop field);
865
866 static void set_signature(oop constructor, oop value);
867 static void set_annotations(oop constructor, oop value);
868
869 // Debugging
870 friend class JavaClasses;
871 };
872
873 class java_lang_reflect_Parameter {
874 private:
875 // Note that to reduce dependencies on the JDK we compute these
876 // offsets at run-time.
877 static int _name_offset;
878 static int _modifiers_offset;
879 static int _index_offset;
880 static int _executable_offset;
881
882 static void compute_offsets();
883
884 public:
885 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
886
887 // Allocation
888 static Handle create(TRAPS);
889
890 // Accessors
891 static oop name(oop field);
892 static void set_name(oop field, oop value);
893
894 static int index(oop reflect);
895 static void set_index(oop reflect, int value);
896
897 static int modifiers(oop reflect);
898 static void set_modifiers(oop reflect, int value);
899
900 static oop executable(oop constructor);
901 static void set_executable(oop constructor, oop value);
902
903 friend class JavaClasses;
904 };
905
906 #define MODULE_INJECTED_FIELDS(macro) \
907 macro(java_lang_Module, module_entry, intptr_signature, false)
908
909 class java_lang_Module {
910 private:
911 static int _loader_offset;
912 static int _name_offset;
913 static int _module_entry_offset;
914
915 static void compute_offsets();
916
917 public:
918 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
919
920 // Allocation
921 static Handle create(Handle loader, Handle module_name, TRAPS);
922
923 // Testers
924 static bool is_instance(oop obj);
925
926 // Accessors
927 static oop loader(oop module);
928 static void set_loader(oop module, oop value);
929
930 // CDS
931 static int module_entry_offset() { return _module_entry_offset; }
932
933 static oop name(oop module);
934 static void set_name(oop module, oop value);
935
936 static ModuleEntry* module_entry(oop module);
937 static ModuleEntry* module_entry_raw(oop module);
938 static void set_module_entry(oop module, ModuleEntry* module_entry);
939
940 friend class JavaClasses;
941 };
942
943 #define CONSTANTPOOL_INJECTED_FIELDS(macro) \
944 macro(reflect_ConstantPool, vmholder, object_signature, false)
945
946 // Interface to jdk.internal.reflect.ConstantPool objects
947 class reflect_ConstantPool {
948 private:
949 // Note that to reduce dependencies on the JDK we compute these
950 // offsets at run-time. This field is the oop offset for the
951 // actual constant pool, previously called constantPoolOop.
952 static int _vmholder_offset;
953
954 static void compute_offsets();
955
956 public:
957 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
958
959 // Allocation
960 static Handle create(TRAPS);
961
962 // Accessors
963 static void set_cp(oop reflect, ConstantPool* value);
964
965 static ConstantPool* get_cp(oop reflect);
966
967 // Debugging
968 friend class JavaClasses;
969 };
970
971
972 // Interface to java.lang primitive type boxing objects:
973 // - java.lang.Boolean
974 // - java.lang.Character
975 // - java.lang.Float
976 // - java.lang.Double
977 // - java.lang.Byte
978 // - java.lang.Short
979 // - java.lang.Integer
980 // - java.lang.Long
981
982 // This could be separated out into 8 individual classes.
983
984 class java_lang_boxing_object: AllStatic {
985 private:
986 static int _value_offset;
987 static int _long_value_offset;
988
989 static void compute_offsets();
990 static oop initialize_and_allocate(BasicType type, TRAPS);
991 public:
992 // Allocation. Returns a boxed value, or null for invalid type.
993 static oop create(BasicType type, jvalue* value, TRAPS);
994 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
995 static BasicType get_value(oop box, jvalue* value);
996 static BasicType set_value(oop box, jvalue* value);
997 static BasicType basic_type(oop box);
998 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
999 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
1000 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
1001 static void print(BasicType type, jvalue* value, outputStream* st);
1002
1003 static int value_offset(BasicType type) {
1004 return is_double_word_type(type) ? _long_value_offset : _value_offset;
1005 }
1006
1007 static void serialize_offsets(SerializeClosure* f);
1008
1009 // Debugging
1010 friend class JavaClasses;
1011 };
1012
1013
1014
1015 // Interface to java.lang.ref.Reference objects
1016
1017 class java_lang_ref_Reference: AllStatic {
1018 static int _referent_offset;
1019 static int _queue_offset;
1020 static int _next_offset;
1021 static int _discovered_offset;
1022
1023 static bool _offsets_initialized;
1024
1025 public:
1026 // Accessors
1027 static inline oop weak_referent_no_keepalive(oop ref);
1028 static inline oop weak_referent(oop ref);
1029 static inline oop phantom_referent_no_keepalive(oop ref);
1030 static inline oop unknown_referent_no_keepalive(oop ref);
1031 static inline void clear_referent(oop ref);
1032 static inline void clear_referent_raw(oop ref);
1033 static inline HeapWord* referent_addr_raw(oop ref);
1034 static inline oop next(oop ref);
1035 static inline void set_next(oop ref, oop value);
1036 static inline void set_next_raw(oop ref, oop value);
1037 static inline HeapWord* next_addr_raw(oop ref);
1038 static inline oop discovered(oop ref);
1039 static inline void set_discovered(oop ref, oop value);
1040 static inline void set_discovered_raw(oop ref, oop value);
1041 static inline HeapWord* discovered_addr_raw(oop ref);
1042 static bool is_referent_field(oop obj, ptrdiff_t offset);
1043 static inline bool is_final(oop ref);
1044 static inline bool is_phantom(oop ref);
1045 static inline bool is_weak(oop ref);
1046 static inline bool is_soft(oop ref);
1047
1048 static int referent_offset() { CHECK_INIT(_referent_offset); }
1049 static int queue_offset() { CHECK_INIT(_queue_offset); }
1050 static int next_offset() { CHECK_INIT(_next_offset); }
1051 static int discovered_offset() { CHECK_INIT(_discovered_offset); }
1052
1053 static void compute_offsets();
1054 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1055 };
1056
1057
1058 // Interface to java.lang.ref.SoftReference objects
1059
1060 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
1061 static int _timestamp_offset;
1062 static int _static_clock_offset;
1063
1064 public:
1065 // Accessors
1066 static jlong timestamp(oop ref);
1067
1068 // Accessors for statics
1069 static jlong clock();
1070 static void set_clock(jlong value);
1071
1072 static void compute_offsets();
1073 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1074 };
1075
1076 // Interface to java.lang.invoke.MethodHandle objects
1077
1078 class java_lang_invoke_MethodHandle: AllStatic {
1079 friend class JavaClasses;
1080
1081 private:
1082 static int _type_offset; // the MethodType of this MH
1083 static int _form_offset; // the LambdaForm of this MH
1084
1085 static void compute_offsets();
1086
1087 public:
1088 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1089
1090 // Accessors
1091 static oop type(oop mh);
1092 static void set_type(oop mh, oop mtype);
1093
1094 static oop form(oop mh);
1095 static void set_form(oop mh, oop lform);
1096
1097 // Testers
1098 static bool is_subclass(Klass* klass) {
1099 return klass->is_subclass_of(vmClasses::MethodHandle_klass());
1100 }
1101 static bool is_instance(oop obj);
1102
1103 // Accessors for code generation:
1104 static int type_offset() { CHECK_INIT(_type_offset); }
1105 static int form_offset() { CHECK_INIT(_form_offset); }
1106 };
1107
1108 // Interface to java.lang.invoke.DirectMethodHandle objects
1109
1110 class java_lang_invoke_DirectMethodHandle: AllStatic {
1111 friend class JavaClasses;
1112
1113 private:
1114 static int _member_offset; // the MemberName of this DMH
1115
1116 static void compute_offsets();
1117
1118 public:
1119 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1120
1121 // Accessors
1122 static oop member(oop mh);
1123
1124 // Testers
1125 static bool is_subclass(Klass* klass) {
1126 return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass());
1127 }
1128 static bool is_instance(oop obj);
1129
1130 // Accessors for code generation:
1131 static int member_offset() { CHECK_INIT(_member_offset); }
1132 };
1133
1134 // Interface to java.lang.invoke.LambdaForm objects
1135 // (These are a private interface for managing adapter code generation.)
1136
1137 class java_lang_invoke_LambdaForm: AllStatic {
1138 friend class JavaClasses;
1139
1140 private:
1141 static int _vmentry_offset; // type is MemberName
1142
1143 static void compute_offsets();
1144
1145 public:
1146 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1147
1148 // Accessors
1149 static oop vmentry(oop lform);
1150
1151 // Testers
1152 static bool is_subclass(Klass* klass) {
1153 return vmClasses::LambdaForm_klass() != nullptr &&
1154 klass->is_subclass_of(vmClasses::LambdaForm_klass());
1155 }
1156 static bool is_instance(oop obj);
1157
1158 // Accessors for code generation:
1159 static int vmentry_offset() { CHECK_INIT(_vmentry_offset); }
1160 };
1161
1162 // Interface to java.lang.invoke.NativeEntryPoint objects
1163 // (These are a private interface for managing adapter code generation.)
1164
1165 class jdk_internal_foreign_abi_NativeEntryPoint: AllStatic {
1166 friend class JavaClasses;
1167
1168 private:
1169 static int _method_type_offset;
1170 static int _downcall_stub_address_offset;
1171
1172 static void compute_offsets();
1173
1174 public:
1175 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1176
1177 // Accessors
1178 static oop method_type(oop entry);
1179 static jlong downcall_stub_address(oop entry);
1180
1181 // Testers
1182 static bool is_subclass(Klass* klass) {
1183 return vmClasses::NativeEntryPoint_klass() != nullptr &&
1184 klass->is_subclass_of(vmClasses::NativeEntryPoint_klass());
1185 }
1186 static bool is_instance(oop obj);
1187
1188 // Accessors for code generation:
1189 static int method_type_offset_in_bytes() { return _method_type_offset; }
1190 static int downcall_stub_address_offset_in_bytes() { return _downcall_stub_address_offset; }
1191 };
1192
1193 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic {
1194 friend class JavaClasses;
1195
1196 private:
1197 static int _inputStorage_offset;
1198 static int _outputStorage_offset;
1199 static int _volatileStorage_offset;
1200 static int _stackAlignment_offset;
1201 static int _shadowSpace_offset;
1202 static int _scratch1_offset;
1203 static int _scratch2_offset;
1204
1205 static void compute_offsets();
1206
1207 public:
1208 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1209
1210 // Accessors
1211 static objArrayOop inputStorage(oop entry);
1212 static objArrayOop outputStorage(oop entry);
1213 static objArrayOop volatileStorage(oop entry);
1214 static jint stackAlignment(oop entry);
1215 static jint shadowSpace(oop entry);
1216 static oop scratch1(oop entry);
1217 static oop scratch2(oop entry);
1218
1219 // Testers
1220 static bool is_subclass(Klass* klass) {
1221 return vmClasses::ABIDescriptor_klass() != nullptr &&
1222 klass->is_subclass_of(vmClasses::ABIDescriptor_klass());
1223 }
1224 static bool is_instance(oop obj);
1225 };
1226
1227 class jdk_internal_foreign_abi_VMStorage: AllStatic {
1228 friend class JavaClasses;
1229
1230 private:
1231 static int _type_offset;
1232 static int _indexOrOffset_offset;
1233 static int _segmentMaskOrSize_offset;
1234 static int _debugName_offset;
1235
1236 static void compute_offsets();
1237
1238 public:
1239 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1240
1241 // Accessors
1242 static jbyte type(oop entry);
1243 static jint index_or_offset(oop entry);
1244 static jshort segment_mask_or_size(oop entry);
1245 static oop debugName(oop entry);
1246
1247 // Testers
1248 static bool is_subclass(Klass* klass) {
1249 return vmClasses::VMStorage_klass() != nullptr &&
1250 klass->is_subclass_of(vmClasses::VMStorage_klass());
1251 }
1252 static bool is_instance(oop obj);
1253 };
1254
1255 class jdk_internal_foreign_abi_CallConv: AllStatic {
1256 friend class JavaClasses;
1257
1258 private:
1259 static int _argRegs_offset;
1260 static int _retRegs_offset;
1261
1262 static void compute_offsets();
1263
1264 public:
1265 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1266
1267 // Accessors
1268 static objArrayOop argRegs(oop entry);
1269 static objArrayOop retRegs(oop entry);
1270
1271 // Testers
1272 static bool is_subclass(Klass* klass) {
1273 return vmClasses::CallConv_klass() != nullptr &&
1274 klass->is_subclass_of(vmClasses::CallConv_klass());
1275 }
1276 static bool is_instance(oop obj);
1277 };
1278
1279 // Interface to java.lang.invoke.MemberName objects
1280 // (These are a private interface for Java code to query the class hierarchy.)
1281
1282 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1283 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1284
1285 class java_lang_invoke_ResolvedMethodName : AllStatic {
1286 friend class JavaClasses;
1287
1288 static int _vmtarget_offset;
1289 static int _vmholder_offset;
1290
1291 static void compute_offsets();
1292 public:
1293 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1294
1295 static int vmtarget_offset() { CHECK_INIT(_vmtarget_offset); }
1296
1297 static Method* vmtarget(oop resolved_method);
1298 static void set_vmtarget(oop resolved_method, Method* method);
1299
1300 static void set_vmholder(oop resolved_method, oop holder);
1301
1302 // find or create resolved member name
1303 static oop find_resolved_method(const methodHandle& m, TRAPS);
1304
1305 static bool is_instance(oop resolved_method);
1306 };
1307
1308
1309 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1310 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1311
1312
1313 class java_lang_invoke_MemberName: AllStatic {
1314 friend class JavaClasses;
1315
1316 private:
1317 // From java.lang.invoke.MemberName:
1318 // private Class<?> clazz; // class in which the method is defined
1319 // private String name; // may be null if not yet materialized
1320 // private Object type; // may be null if not yet materialized
1321 // private int flags; // modifier bits; see reflect.Modifier
1322 // private ResolvedMethodName method; // holds VM-specific target value
1323 // private intptr_t vmindex; // member index within class or interface
1324 static int _clazz_offset;
1325 static int _name_offset;
1326 static int _type_offset;
1327 static int _flags_offset;
1328 static int _method_offset;
1329 static int _vmindex_offset;
1330
1331 static void compute_offsets();
1332
1333 public:
1334 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1335 // Accessors
1336 static oop clazz(oop mname);
1337 static void set_clazz(oop mname, oop clazz);
1338
1339 static oop type(oop mname);
1340 static void set_type(oop mname, oop type);
1341
1342 static oop name(oop mname);
1343 static void set_name(oop mname, oop name);
1344
1345 static int flags(oop mname);
1346 static void set_flags(oop mname, int flags);
1347
1348 // Link through ResolvedMethodName field to get Method*
1349 static Method* vmtarget(oop mname);
1350 static void set_method(oop mname, oop method);
1351
1352 static intptr_t vmindex(oop mname);
1353 static void set_vmindex(oop mname, intptr_t index);
1354
1355 // Testers
1356 static bool is_subclass(Klass* klass) {
1357 return klass->is_subclass_of(vmClasses::MemberName_klass());
1358 }
1359 static bool is_instance(oop obj);
1360
1361 static bool is_method(oop obj);
1362
1363 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1364 enum {
1365 MN_IS_METHOD = 0x00010000, // method (not constructor)
1366 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1367 MN_IS_FIELD = 0x00040000, // field
1368 MN_IS_TYPE = 0x00080000, // nested type
1369 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1370 MN_TRUSTED_FINAL = 0x00200000, // trusted final field
1371 MN_HIDDEN_MEMBER = 0x00400000, // @Hidden annotation detected
1372 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1373 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1374 MN_NESTMATE_CLASS = 0x00000001,
1375 MN_HIDDEN_CLASS = 0x00000002,
1376 MN_STRONG_LOADER_LINK = 0x00000004,
1377 MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1378 // Lookup modes
1379 MN_MODULE_MODE = 0x00000010,
1380 MN_UNCONDITIONAL_MODE = 0x00000020,
1381 MN_TRUSTED_MODE = -1
1382 };
1383
1384 // Accessors for code generation:
1385 static int clazz_offset() { CHECK_INIT(_clazz_offset); }
1386 static int type_offset() { CHECK_INIT(_type_offset); }
1387 static int flags_offset() { CHECK_INIT(_flags_offset); }
1388 static int method_offset() { CHECK_INIT(_method_offset); }
1389 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1390 };
1391
1392
1393 // Interface to java.lang.invoke.MethodType objects
1394
1395 class java_lang_invoke_MethodType: AllStatic {
1396 friend class JavaClasses;
1397
1398 private:
1399 static int _rtype_offset;
1400 static int _ptypes_offset;
1401
1402 static void compute_offsets();
1403
1404 public:
1405 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1406 // Accessors
1407 static oop rtype(oop mt);
1408 static objArrayOop ptypes(oop mt);
1409
1410 static oop ptype(oop mt, int index);
1411 static int ptype_count(oop mt);
1412
1413 static int ptype_slot_count(oop mt); // extra counts for long/double
1414 static int rtype_slot_count(oop mt); // extra counts for long/double
1415
1416 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1417 static void print_signature(oop mt, outputStream* st);
1418
1419 static bool is_instance(oop obj);
1420
1421 static bool equals(oop mt1, oop mt2);
1422
1423 // Accessors for code generation:
1424 static int rtype_offset() { CHECK_INIT(_rtype_offset); }
1425 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); }
1426 };
1427
1428
1429 // Interface to java.lang.invoke.CallSite objects
1430 #define CALLSITE_INJECTED_FIELDS(macro) \
1431 macro(java_lang_invoke_CallSite, vmdependencies, intptr_signature, false) \
1432 macro(java_lang_invoke_CallSite, last_cleanup, long_signature, false)
1433
1434 class java_lang_invoke_CallSite: AllStatic {
1435 friend class JavaClasses;
1436
1437 private:
1438 static int _target_offset;
1439 static int _vmdependencies_offset;
1440 static int _last_cleanup_offset;
1441
1442 static void compute_offsets();
1443
1444 public:
1445 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1446 // Accessors
1447 static oop target( oop site);
1448 static void set_target( oop site, oop target);
1449 static void set_target_volatile( oop site, oop target);
1450
1451 static DependencyContext vmdependencies(oop call_site);
1452
1453 // Testers
1454 static bool is_subclass(Klass* klass) {
1455 return klass->is_subclass_of(vmClasses::CallSite_klass());
1456 }
1457 static bool is_instance(oop obj);
1458
1459 // Accessors for code generation:
1460 static int target_offset() { CHECK_INIT(_target_offset); }
1461 };
1462
1463 // Interface to java.lang.invoke.ConstantCallSite objects
1464
1465 class java_lang_invoke_ConstantCallSite: AllStatic {
1466 friend class JavaClasses;
1467
1468 private:
1469 static int _is_frozen_offset;
1470
1471 static void compute_offsets();
1472
1473 public:
1474 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1475 // Accessors
1476 static jboolean is_frozen(oop site);
1477
1478 // Testers
1479 static bool is_subclass(Klass* klass) {
1480 return klass->is_subclass_of(vmClasses::ConstantCallSite_klass());
1481 }
1482 static bool is_instance(oop obj);
1483 };
1484
1485 // Interface to java.lang.ClassLoader objects
1486
1487 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1488 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1489
1490 class java_lang_ClassLoader : AllStatic {
1491 private:
1492 static int _loader_data_offset;
1493 static int _parent_offset;
1494 static int _parallelCapable_offset;
1495 static int _name_offset;
1496 static int _nameAndId_offset;
1497 static int _unnamedModule_offset;
1498
1499 static void compute_offsets();
1500
1501 public:
1502 // Support for CDS
1503 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1504 static int loader_data_offset() { return _loader_data_offset; }
1505
1506 static ClassLoaderData* loader_data_acquire(oop loader);
1507 static ClassLoaderData* loader_data(oop loader);
1508 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1509
1510 static oop parent(oop loader);
1511 static oop parent_no_keepalive(oop loader);
1512 static oop name(oop loader);
1513 static oop nameAndId(oop loader);
1514 static bool isAncestor(oop loader, oop cl);
1515
1516 // Support for parallelCapable field
1517 static bool parallelCapable(oop the_class_mirror);
1518
1519 static bool is_trusted_loader(oop loader);
1520
1521 // Testers
1522 static bool is_subclass(Klass* klass) {
1523 return klass->is_subclass_of(vmClasses::ClassLoader_klass());
1524 }
1525 static bool is_instance(oop obj);
1526
1527 static oop unnamedModule(oop loader);
1528
1529 // Debugging
1530 friend class JavaClasses;
1531 };
1532
1533
1534 // Interface to java.lang.System objects
1535
1536 class java_lang_System : AllStatic {
1537 private:
1538 static int _static_in_offset;
1539 static int _static_out_offset;
1540 static int _static_err_offset;
1541
1542 public:
1543 static int in_offset() { CHECK_INIT(_static_in_offset); }
1544 static int out_offset() { CHECK_INIT(_static_out_offset); }
1545 static int err_offset() { CHECK_INIT(_static_err_offset); }
1546
1547 static void compute_offsets();
1548 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1549
1550 // Debugging
1551 friend class JavaClasses;
1552 };
1553
1554
1555 // Interface to java.lang.StackTraceElement objects
1556
1557 class java_lang_StackTraceElement: AllStatic {
1558 private:
1559 static int _declaringClassObject_offset;
1560 static int _classLoaderName_offset;
1561 static int _moduleName_offset;
1562 static int _moduleVersion_offset;
1563 static int _declaringClass_offset;
1564 static int _methodName_offset;
1565 static int _fileName_offset;
1566 static int _lineNumber_offset;
1567
1568 // Setters
1569 static void set_classLoaderName(oop element, oop value);
1570 static void set_moduleName(oop element, oop value);
1571 static void set_moduleVersion(oop element, oop value);
1572 static void set_declaringClass(oop element, oop value);
1573 static void set_methodName(oop element, oop value);
1574 static void set_fileName(oop element, oop value);
1575 static void set_lineNumber(oop element, int value);
1576 static void set_declaringClassObject(oop element, oop value);
1577
1578 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1579 const methodHandle& method, int bci,
1580 Symbol*& source, oop& source_file, int& line_number, TRAPS);
1581
1582 public:
1583 // Create an instance of StackTraceElement
1584 static oop create(const methodHandle& method, int bci, TRAPS);
1585
1586 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1587 int version, int bci, Symbol* name, TRAPS);
1588
1589 static void compute_offsets();
1590 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1591
1592 #if INCLUDE_JVMCI
1593 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1594 #endif
1595
1596 // Debugging
1597 friend class JavaClasses;
1598 };
1599
1600
1601 class Backtrace: AllStatic {
1602 public:
1603 // Helper backtrace functions to store bci|version together.
1604 static int merge_bci_and_version(int bci, int version);
1605 static int merge_mid_and_cpref(int mid, int cpref);
1606 static int bci_at(unsigned int merged);
1607 static int version_at(unsigned int merged);
1608 static int mid_at(unsigned int merged);
1609 static int cpref_at(unsigned int merged);
1610 static int get_line_number(Method* method, int bci);
1611 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1612
1613 // Debugging
1614 friend class JavaClasses;
1615 };
1616
1617 class java_lang_ClassFrameInfo: AllStatic {
1618 private:
1619 static int _classOrMemberName_offset;
1620 static int _flags_offset;
1621
1622 public:
1623 static oop classOrMemberName(oop info);
1624 static int flags(oop info);
1625
1626 // Setters
1627 static void init_class(Handle stackFrame, const methodHandle& m);
1628 static void init_method(Handle stackFrame, const methodHandle& m, TRAPS);
1629
1630 static void compute_offsets();
1631 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1632
1633 // Debugging
1634 friend class JavaClasses;
1635 };
1636
1637 // Interface to java.lang.StackFrameInfo objects
1638
1639 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1640 macro(java_lang_StackFrameInfo, version, short_signature, false)
1641
1642 class java_lang_StackFrameInfo: AllStatic {
1643 private:
1644 static int _type_offset;
1645 static int _name_offset;
1646 static int _bci_offset;
1647 static int _version_offset;
1648 static int _contScope_offset;
1649
1650 public:
1651 // Getters
1652 static oop name(oop info);
1653 static oop type(oop info);
1654 static Method* get_method(oop info);
1655
1656 // Setters
1657 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS);
1658 static void set_name(oop info, oop value);
1659 static void set_type(oop info, oop value);
1660 static void set_bci(oop info, int value);
1661
1662 static void set_version(oop info, short value);
1663 static void set_contScope(oop info, oop value);
1664
1665 static void compute_offsets();
1666 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1667
1668 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1669
1670 // Debugging
1671 friend class JavaClasses;
1672 };
1673
1674 class java_lang_LiveStackFrameInfo: AllStatic {
1675 private:
1676 static int _monitors_offset;
1677 static int _locals_offset;
1678 static int _operands_offset;
1679 static int _mode_offset;
1680
1681 public:
1682 static void set_monitors(oop info, oop value);
1683 static void set_locals(oop info, oop value);
1684 static void set_operands(oop info, oop value);
1685 static void set_mode(oop info, int value);
1686
1687 static void compute_offsets();
1688 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1689
1690 // Debugging
1691 friend class JavaClasses;
1692 };
1693
1694 // Interface to java.lang.reflect.RecordComponent objects
1695
1696 class java_lang_reflect_RecordComponent: AllStatic {
1697 private:
1698 static int _clazz_offset;
1699 static int _name_offset;
1700 static int _type_offset;
1701 static int _accessor_offset;
1702 static int _signature_offset;
1703 static int _annotations_offset;
1704 static int _typeAnnotations_offset;
1705
1706 // Setters
1707 static void set_clazz(oop element, oop value);
1708 static void set_name(oop element, oop value);
1709 static void set_type(oop element, oop value);
1710 static void set_accessor(oop element, oop value);
1711 static void set_signature(oop element, oop value);
1712 static void set_annotations(oop element, oop value);
1713 static void set_typeAnnotations(oop element, oop value);
1714
1715 public:
1716 // Create an instance of RecordComponent
1717 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1718
1719 static void compute_offsets();
1720 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1721
1722 // Debugging
1723 friend class JavaClasses;
1724 };
1725
1726
1727 // Interface to java.lang.AssertionStatusDirectives objects
1728
1729 class java_lang_AssertionStatusDirectives: AllStatic {
1730 private:
1731 static int _classes_offset;
1732 static int _classEnabled_offset;
1733 static int _packages_offset;
1734 static int _packageEnabled_offset;
1735 static int _deflt_offset;
1736
1737 public:
1738 // Setters
1739 static void set_classes(oop obj, oop val);
1740 static void set_classEnabled(oop obj, oop val);
1741 static void set_packages(oop obj, oop val);
1742 static void set_packageEnabled(oop obj, oop val);
1743 static void set_deflt(oop obj, bool val);
1744
1745 static void compute_offsets();
1746 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1747
1748 // Debugging
1749 friend class JavaClasses;
1750 };
1751
1752
1753 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1754 private:
1755 static int _owner_offset;
1756 public:
1757 static void compute_offsets();
1758 static oop get_owner_threadObj(oop obj);
1759 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1760 };
1761
1762 // Interface to jdk.internal.misc.UnsafeConsants
1763
1764 class jdk_internal_misc_UnsafeConstants : AllStatic {
1765 public:
1766 static void set_unsafe_constants();
1767 static void compute_offsets() { }
1768 static void serialize_offsets(SerializeClosure* f) { }
1769 };
1770
1771 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects
1772
1773 class vector_VectorPayload : AllStatic {
1774 private:
1775 static int _payload_offset;
1776 public:
1777 static void set_payload(oop o, oop val);
1778
1779 static void compute_offsets();
1780 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1781
1782 // Testers
1783 static bool is_subclass(Klass* klass) {
1784 return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass());
1785 }
1786 static bool is_instance(oop obj);
1787 };
1788
1789 class java_lang_Integer : AllStatic {
1790 public:
1791 static jint value(oop obj);
1792 };
1793
1794 class java_lang_Long : AllStatic {
1795 public:
1796 static jlong value(oop obj);
1797 };
1798
1799 class java_lang_Character : AllStatic {
1800 public:
1801 static jchar value(oop obj);
1802 };
1803
1804 class java_lang_Short : AllStatic {
1805 public:
1806 static jshort value(oop obj);
1807 };
1808
1809 class java_lang_Byte : AllStatic {
1810 public:
1811 static jbyte value(oop obj);
1812 };
1813
1814 class java_lang_Boolean : AllStatic {
1815 private:
1816 static int _static_TRUE_offset;
1817 static int _static_FALSE_offset;
1818 public:
1819 static Symbol* symbol();
1820 static void compute_offsets(InstanceKlass* k);
1821 static oop get_TRUE(InstanceKlass *k);
1822 static oop get_FALSE(InstanceKlass *k);
1823 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1824 static jboolean value(oop obj);
1825 };
1826
1827 class java_lang_Integer_IntegerCache : AllStatic {
1828 private:
1829 static int _static_cache_offset;
1830 public:
1831 static Symbol* symbol();
1832 static void compute_offsets(InstanceKlass* k);
1833 static objArrayOop cache(InstanceKlass *k);
1834 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1835 };
1836
1837 class java_lang_Long_LongCache : AllStatic {
1838 private:
1839 static int _static_cache_offset;
1840 public:
1841 static Symbol* symbol();
1842 static void compute_offsets(InstanceKlass* k);
1843 static objArrayOop cache(InstanceKlass *k);
1844 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1845 };
1846
1847 class java_lang_Character_CharacterCache : AllStatic {
1848 private:
1849 static int _static_cache_offset;
1850 public:
1851 static Symbol* symbol();
1852 static void compute_offsets(InstanceKlass* k);
1853 static objArrayOop cache(InstanceKlass *k);
1854 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1855 };
1856
1857 class java_lang_Short_ShortCache : AllStatic {
1858 private:
1859 static int _static_cache_offset;
1860 public:
1861 static Symbol* symbol();
1862 static void compute_offsets(InstanceKlass* k);
1863 static objArrayOop cache(InstanceKlass *k);
1864 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1865 };
1866
1867 class java_lang_Byte_ByteCache : AllStatic {
1868 private:
1869 static int _static_cache_offset;
1870 public:
1871 static Symbol* symbol();
1872 static void compute_offsets(InstanceKlass* k);
1873 static objArrayOop cache(InstanceKlass *k);
1874 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1875 };
1876
1877
1878 // Interface to java.lang.InternalError objects
1879
1880 #define INTERNALERROR_INJECTED_FIELDS(macro) \
1881 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1882
1883 class java_lang_InternalError : AllStatic {
1884 private:
1885 static int _during_unsafe_access_offset;
1886 public:
1887 static jboolean during_unsafe_access(oop internal_error);
1888 static void set_during_unsafe_access(oop internal_error);
1889 static void compute_offsets();
1890 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1891 };
1892
1893 // Use to declare fields that need to be injected into Java classes
1894 // for the JVM to use. The name_index and signature_index are
1895 // declared in vmSymbols. The may_be_java flag is used to declare
1896 // fields that might already exist in Java but should be injected if
1897 // they don't. Otherwise the field is unconditionally injected and
1898 // the JVM uses the injected one. This is to ensure that name
1899 // collisions don't occur. In general may_be_java should be false
1900 // unless there's a good reason.
1901
1902 class InjectedField {
1903 public:
1904 const vmClassID klass_id;
1905 const vmSymbolID name_index;
1906 const vmSymbolID signature_index;
1907 const bool may_be_java;
1908
1909
1910 InstanceKlass* klass() const { return vmClasses::klass_at(klass_id); }
1911 Symbol* name() const { return lookup_symbol(name_index); }
1912 Symbol* signature() const { return lookup_symbol(signature_index); }
1913
1914 int compute_offset();
1915
1916 // Find the Symbol for this index
1917 static Symbol* lookup_symbol(vmSymbolID symbol_index) {
1918 return Symbol::vm_symbol_at(symbol_index);
1919 }
1920 };
1921
1922
1923 // Interface to hard-coded offset checking
1924
1925 enum class InjectedFieldID : int;
1926
1927 class JavaClasses : AllStatic {
1928 private:
1929
1930 static InjectedField _injected_fields[];
1931
1932 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1933 public:
1934
1935 static int compute_injected_offset(InjectedFieldID id);
1936
1937 static void compute_offsets();
1938 static void check_offsets() PRODUCT_RETURN;
1939 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1940 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1941 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1942
1943 static void compute_offset(int &dest_offset,
1944 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
1945 bool is_static = false);
1946 static void compute_offset(int& dest_offset, InstanceKlass* ik,
1947 const char* name_string, Symbol* signature_symbol,
1948 bool is_static = false);
1949 };
1950
1951 #undef CHECK_INIT
1952
1953 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP