1 /*
2 * Copyright (c) 1997, 2024, 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
42 #define CHECK_INIT(offset) assert(offset != 0, "should be initialized"); return offset;
43
44 // Interface to java.lang.Object objects
45
46 class java_lang_Object : AllStatic {
47 public:
48 static void register_natives(TRAPS);
49 };
50
51 // Interface to java.lang.String objects
52
53 // The flags field is a collection of bits representing boolean values used
54 // internally by the VM.
55 #define STRING_INJECTED_FIELDS(macro) \
56 macro(java_lang_String, flags, byte_signature, false)
57
58 class java_lang_String : AllStatic {
59 private:
60 static int _value_offset;
61 static int _hash_offset;
62 static int _hashIsZero_offset;
63 static int _coder_offset;
64 static int _flags_offset;
65
66 static bool _initialized;
67
68 static Handle basic_create(int length, bool byte_arr, TRAPS);
69
70 static inline void set_coder(oop string, jbyte coder);
71
72 // Bitmasks for values in the injected flags field.
73 static const uint8_t _deduplication_forbidden_mask = 1 << 0;
74 static const uint8_t _deduplication_requested_mask = 1 << 1;
75
76 static int flags_offset() { CHECK_INIT(_flags_offset); }
77 // Return the address of the injected flags field.
78 static inline uint8_t* flags_addr(oop java_string);
79 // Test whether the designated bit of the injected flags field is set.
80 static inline bool is_flag_set(oop java_string, uint8_t flag_mask);
81 // Atomically test and set the designated bit of the injected flags field,
82 // returning true if the bit was already set.
83 static bool test_and_set_flag(oop java_string, uint8_t flag_mask);
84
85 static inline unsigned int hash_code_impl(oop java_string, bool update);
86
87 public:
88
89 // Coders
90 enum Coder {
91 CODER_LATIN1 = 0,
92 CODER_UTF16 = 1
93 };
94
95 static void compute_offsets();
96 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
97
98 // Instance creation
99 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
100 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
101 static Handle create_from_str(const char* utf8_str, TRAPS);
102 static oop create_oop_from_str(const char* utf8_str, TRAPS);
103 static Handle create_from_symbol(const Symbol* symbol, TRAPS);
104 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
105
106 static void set_compact_strings(bool value);
107
108 static int value_offset() { CHECK_INIT(_value_offset); }
109 static int coder_offset() { CHECK_INIT(_coder_offset); }
110
111 static inline void set_value(oop string, typeArrayOop buffer);
112
113 // Set the deduplication_forbidden flag true. This flag is sticky; once
114 // set it never gets cleared. This is set when a String is interned in
115 // the StringTable, to prevent string deduplication from changing the
116 // String's value array.
117 static inline void set_deduplication_forbidden(oop java_string);
118
119 // Test and set the deduplication_requested flag. Returns the old value
120 // of the flag. This flag is sticky; once set it never gets cleared.
121 // Some GCs may use this flag when deciding whether to request
122 // deduplication of a String, to avoid multiple requests for the same
123 // object.
124 static inline bool test_and_set_deduplication_requested(oop java_string);
125
126 // Accessors
127 static inline typeArrayOop value(oop java_string);
128 static inline typeArrayOop value_no_keepalive(oop java_string);
129 static inline bool hash_is_set(oop string);
130 static inline bool is_latin1(oop java_string);
131 static inline bool deduplication_forbidden(oop java_string);
132 static inline bool deduplication_requested(oop java_string);
133 static inline int length(oop java_string);
134 static inline int length(oop java_string, typeArrayOop string_value);
135 static size_t utf8_length(oop java_string);
136 static size_t utf8_length(oop java_string, typeArrayOop string_value);
137 // Legacy variants that truncate the length if needed
138 static int utf8_length_as_int(oop java_string);
139 static int utf8_length_as_int(oop java_string, typeArrayOop string_value);
140
141 // String converters
142 static char* as_utf8_string(oop java_string);
143 // `length` is set to the length of the utf8 sequence.
144 static char* as_utf8_string(oop java_string, size_t& length);
145 static char* as_utf8_string_full(oop java_string, char* buf, size_t buflen, size_t& length);
146 static char* as_utf8_string(oop java_string, char* buf, size_t buflen);
147 static char* as_utf8_string(oop java_string, int start, int len);
148 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, size_t buflen);
149 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, size_t buflen);
150 static char* as_platform_dependent_str(Handle java_string, TRAPS);
151 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
152 static jchar* as_unicode_string_or_null(oop java_string, int& length);
153 // produce an ascii string with all other values quoted using \u####
154 static char* as_quoted_ascii(oop java_string);
155
156 // Compute the hash value for a java.lang.String object which would
157 // contain the characters passed in.
158 //
159 // As the hash value used by the String object itself, in
160 // String.hashCode(). This value is normally calculated in Java code
161 // in the String.hashCode method(), but is precomputed for String
162 // objects in the shared archive file.
163 // hash P(31) from Kernighan & Ritchie
164 //
165 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
166 static unsigned int hash_code(const jchar* s, int len) {
167 unsigned int h = 0;
168 while (len-- > 0) {
169 h = 31*h + (unsigned int) *s;
170 s++;
171 }
172 return h;
173 }
174
175 static unsigned int hash_code(const jbyte* s, int len) {
176 unsigned int h = 0;
177 while (len-- > 0) {
178 h = 31*h + (((unsigned int) *s) & 0xFF);
179 s++;
180 }
181 return h;
182 }
183
184 static unsigned int hash_code(const char* utf8_str, size_t utf8_len) {
185 unsigned int h = 0;
186 int unicode_length = UTF8::unicode_length(utf8_str, utf8_len);
187
188 jchar c;
189 while (unicode_length-- > 0) {
190 utf8_str = UTF8::next(utf8_str, &c);
191 h = 31 * h + ((unsigned int)c);
192 }
193 return h;
194 }
195
196 static unsigned int hash_code(oop java_string);
197 static unsigned int hash_code_noupdate(oop java_string);
198
199 // Compare strings (of different types/encodings), length is the string (array) length
200 static bool equals(oop java_string, const jchar* chars, int len);
201 static bool equals(oop java_string, const char* utf8_str, size_t utf8_len);
202 static bool equals(oop str1, oop str2);
203 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
204
205 // Conversion between '.' and '/' formats, and allocate a String from the result.
206 static Handle externalize_classname(Symbol* java_name, TRAPS);
207
208 // Conversion
209 static Symbol* as_symbol(oop java_string);
210 static Symbol* as_symbol_or_null(oop java_string);
211
212 // Tester
213 static inline bool is_instance(oop obj);
214
215 // Debugging
216 static void print(oop java_string, outputStream* st, int max_length = MaxStringPrintSize);
217 friend class JavaClasses;
218 friend class StringTable;
219 };
220
221
222 // Interface to java.lang.Class objects
223
224 #define CLASS_INJECTED_FIELDS(macro) \
225 macro(java_lang_Class, klass, intptr_signature, false) \
226 macro(java_lang_Class, array_klass, intptr_signature, false) \
227 macro(java_lang_Class, oop_size, int_signature, false) \
228 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
229 macro(java_lang_Class, protection_domain, object_signature, false) \
230 macro(java_lang_Class, source_file, object_signature, false) \
231 macro(java_lang_Class, init_lock, object_signature, false)
232
233 class java_lang_Class : AllStatic {
234 friend class VMStructs;
235 friend class JVMCIVMStructs;
236
237 private:
238
239 // The fake offsets are added by the class loader when java.lang.Class is loaded
240
241 static int _klass_offset;
242 static int _array_klass_offset;
243
244 static int _oop_size_offset;
245 static int _static_oop_field_count_offset;
246
247 static int _protection_domain_offset;
248 static int _init_lock_offset;
249 static int _signers_offset;
250 static int _class_loader_offset;
251 static int _module_offset;
252 static int _component_mirror_offset;
253 static int _name_offset;
254 static int _source_file_offset;
255 static int _classData_offset;
256 static int _classRedefinedCount_offset;
257 static int _reflectionData_offset;
258
259 static bool _offsets_computed;
260
261 static GrowableArray<Klass*>* _fixup_mirror_list;
262 static GrowableArray<Klass*>* _fixup_module_field_list;
263
264 static void set_init_lock(oop java_class, oop init_lock);
265 static void set_protection_domain(oop java_class, oop protection_domain);
266 static void set_class_loader(oop java_class, oop class_loader);
267 static void set_component_mirror(oop java_class, oop comp_mirror);
268 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
269 Handle classData, TRAPS);
270 static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
271 public:
272 static void allocate_fixup_lists();
273 static void compute_offsets();
274
275 // Instance creation
276 static void allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
277 Handle& mirror, Handle& comp_mirror, TRAPS); // returns mirror and comp_mirror
278 static void create_mirror(Klass* k, Handle class_loader, Handle module,
279 Handle protection_domain, Handle classData, TRAPS);
280 static void fixup_mirror(Klass* k, TRAPS);
281 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
282
283 // Archiving
284 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
285 static void create_scratch_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
286 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
287 Handle protection_domain,
288 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
289
290 static void fixup_module_field(Klass* k, Handle module);
291
292 // Conversion
293 static Klass* as_Klass(oop java_class);
294 static void set_klass(oop java_class, Klass* klass);
295 static BasicType as_BasicType(oop java_class, Klass** reference_klass = nullptr);
296 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
297 static void print_signature(oop java_class, outputStream *st);
298 static const char* as_external_name(oop java_class);
299 // Testing
300 static bool is_instance(oop obj);
301
302 static bool is_primitive(oop java_class);
303 static BasicType primitive_type(oop java_class);
304 static oop primitive_mirror(BasicType t);
305 // JVM_NewArray support
306 static Klass* array_klass_acquire(oop java_class);
307 static void release_set_array_klass(oop java_class, Klass* klass);
308 // compiler support for class operations
309 static int klass_offset() { CHECK_INIT(_klass_offset); }
310 static int array_klass_offset() { CHECK_INIT(_array_klass_offset); }
311 // Support for classRedefinedCount field
312 static int classRedefinedCount(oop the_class_mirror);
313 static void set_classRedefinedCount(oop the_class_mirror, int value);
314
315 // Support for embedded per-class oops
316 static oop protection_domain(oop java_class);
317 static oop init_lock(oop java_class);
318 static void clear_init_lock(oop java_class) {
319 set_init_lock(java_class, nullptr);
320 }
321 static oop component_mirror(oop java_class);
322 static objArrayOop signers(oop java_class);
323 static oop class_data(oop java_class);
324 static void set_class_data(oop java_class, oop classData);
325 static void set_reflection_data(oop java_class, oop reflection_data);
326
327 static int component_mirror_offset() { return _component_mirror_offset; }
328
329 static oop class_loader(oop java_class);
330 static void set_module(oop java_class, oop module);
331 static oop module(oop java_class);
332
333 static oop name(Handle java_class, TRAPS);
334
335 static oop source_file(oop java_class);
336 static void set_source_file(oop java_class, oop source_file);
337
338 static size_t oop_size(oop java_class);
339 static void set_oop_size(HeapWord* java_class, size_t size);
340 static int static_oop_field_count(oop java_class);
341 static void set_static_oop_field_count(oop java_class, int size);
342
343 static GrowableArray<Klass*>* fixup_mirror_list() {
344 return _fixup_mirror_list;
345 }
346 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
347 _fixup_mirror_list = v;
348 }
349
350 static GrowableArray<Klass*>* fixup_module_field_list() {
351 return _fixup_module_field_list;
352 }
353 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
354 _fixup_module_field_list = v;
355 }
356
357 // Debugging
358 friend class JavaClasses;
359 };
360
361 // Interface to java.lang.Thread objects
362
363 #define THREAD_INJECTED_FIELDS(macro) \
364 macro(java_lang_Thread, jvmti_thread_state, intptr_signature, false) \
365 macro(java_lang_Thread, jvmti_VTMS_transition_disable_count, int_signature, false) \
366 macro(java_lang_Thread, jvmti_is_in_VTMS_transition, bool_signature, false) \
367 JFR_ONLY(macro(java_lang_Thread, jfr_epoch, short_signature, false))
368
369 class java_lang_Thread : AllStatic {
370 friend class java_lang_VirtualThread;
371 friend class JVMCIVMStructs;
372 private:
373 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
374 // so we compute the offsets at startup rather than hard-wiring them.
375 static int _holder_offset;
376 static int _name_offset;
377 static int _contextClassLoader_offset;
378 static int _eetop_offset;
379 static int _jvmti_thread_state_offset;
380 static int _jvmti_VTMS_transition_disable_count_offset;
381 static int _jvmti_is_in_VTMS_transition_offset;
382 static int _interrupted_offset;
383 static int _interruptLock_offset;
384 static int _tid_offset;
385 static int _continuation_offset;
386 static int _park_blocker_offset;
387 static int _scopedValueBindings_offset;
388 JFR_ONLY(static int _jfr_epoch_offset;)
389
390 static void compute_offsets();
391
392 public:
393 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
394
395 // Returns the JavaThread associated with the thread obj
396 static JavaThread* thread(oop java_thread);
397 static JavaThread* thread_acquire(oop java_thread);
398 // Set JavaThread for instance
399 static void set_thread(oop java_thread, JavaThread* thread);
400 static void release_set_thread(oop java_thread, JavaThread* thread);
401 // FieldHolder
402 static oop holder(oop java_thread);
403 // interruptLock
404 static oop interrupt_lock(oop java_thread);
405 // Interrupted status
406 static bool interrupted(oop java_thread);
407 static void set_interrupted(oop java_thread, bool val);
408 // Name
409 static oop name(oop java_thread);
410 static void set_name(oop java_thread, oop name);
411 // Priority
412 static ThreadPriority priority(oop java_thread);
413 static void set_priority(oop java_thread, ThreadPriority priority);
414 // Thread group
415 static oop threadGroup(oop java_thread);
416 // Alive (NOTE: this is not really a field, but provides the correct
417 // definition without doing a Java call)
418 static bool is_alive(oop java_thread);
419 // Daemon
420 static bool is_daemon(oop java_thread);
421 static void set_daemon(oop java_thread);
422 // Context ClassLoader
423 static oop context_class_loader(oop java_thread);
424 // Stack size hint
425 static jlong stackSize(oop java_thread);
426 // Thread ID
427 static int64_t thread_id(oop java_thread);
428 static ByteSize thread_id_offset();
429 // Continuation
430 static inline oop continuation(oop java_thread);
431
432 static JvmtiThreadState* jvmti_thread_state(oop java_thread);
433 static void set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state);
434 static int VTMS_transition_disable_count(oop java_thread);
435 static void inc_VTMS_transition_disable_count(oop java_thread);
436 static void dec_VTMS_transition_disable_count(oop java_thread);
437 static bool is_in_VTMS_transition(oop java_thread);
438 static void set_is_in_VTMS_transition(oop java_thread, bool val);
439 static int is_in_VTMS_transition_offset();
440
441 // Clear all scoped value bindings on error
442 static void clear_scopedValueBindings(oop java_thread);
443
444 // Blocker object responsible for thread parking
445 static oop park_blocker(oop java_thread);
446
447 // Write thread status info to threadStatus field of java.lang.Thread.
448 static void set_thread_status(oop java_thread_oop, JavaThreadStatus status);
449 // Read thread status info from threadStatus field of java.lang.Thread.
450 static JavaThreadStatus get_thread_status(oop java_thread_oop);
451
452 static const char* thread_status_name(oop java_thread_oop);
453
454 // Fill in current stack trace, can cause GC
455 static oop async_get_stack_trace(oop java_thread, TRAPS);
456
457 JFR_ONLY(static u2 jfr_epoch(oop java_thread);)
458 JFR_ONLY(static void set_jfr_epoch(oop java_thread, u2 epoch);)
459 JFR_ONLY(static int jfr_epoch_offset() { CHECK_INIT(_jfr_epoch_offset); })
460
461 // Debugging
462 friend class JavaClasses;
463 };
464
465 // Interface to java.lang.Thread$FieldHolder objects
466
467 class java_lang_Thread_FieldHolder : AllStatic {
468 private:
469 static int _group_offset;
470 static int _priority_offset;
471 static int _stackSize_offset;
472 static int _daemon_offset;
473 static int _thread_status_offset;
474
475 static void compute_offsets();
476
477 public:
478 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
479
480 static oop threadGroup(oop holder);
481
482 static ThreadPriority priority(oop holder);
483 static void set_priority(oop holder, ThreadPriority priority);
484
485 static jlong stackSize(oop holder);
486
487 static bool is_daemon(oop holder);
488 static void set_daemon(oop holder, bool val);
489
490 static void set_thread_status(oop holder, JavaThreadStatus status);
491 static JavaThreadStatus get_thread_status(oop holder);
492
493 friend class JavaClasses;
494 };
495
496 // Interface to java.lang.Thread$Constants objects
497
498 class java_lang_Thread_Constants : AllStatic {
499 private:
500 static int _static_VTHREAD_GROUP_offset;
501 static int _static_NOT_SUPPORTED_CLASSLOADER_offset;
502
503 static void compute_offsets();
504 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
505
506 public:
507 static oop get_VTHREAD_GROUP();
508
509 friend class JavaClasses;
510 };
511
512 // Interface to java.lang.ThreadGroup objects
513
514 class java_lang_ThreadGroup : AllStatic {
515 private:
516 static int _parent_offset;
517 static int _name_offset;
518 static int _maxPriority_offset;
519 static int _daemon_offset;
520
521 static void compute_offsets();
522 public:
523 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
524
525 // parent ThreadGroup
526 static oop parent(oop java_thread_group);
527 // name
528 static const char* name(oop java_thread_group);
529 // maxPriority in group
530 static ThreadPriority maxPriority(oop java_thread_group);
531 // Daemon
532 static bool is_daemon(oop java_thread_group);
533
534 // Debugging
535 friend class JavaClasses;
536 };
537
538
539 // Interface to java.lang.VirtualThread objects
540
541 class java_lang_VirtualThread : AllStatic {
542 private:
543 static int static_vthread_scope_offset;
544 static int _carrierThread_offset;
545 static int _continuation_offset;
546 static int _state_offset;
547 static int _next_offset;
548 static int _onWaitingList_offset;
549 static int _notified_offset;
550 static int _recheckInterval_offset;
551 static int _timeout_offset;
552 JFR_ONLY(static int _jfr_epoch_offset;)
553 public:
554 enum {
555 NEW = 0,
556 STARTED = 1,
557 RUNNING = 2,
558 PARKING = 3,
559 PARKED = 4,
560 PINNED = 5,
561 TIMED_PARKING = 6,
562 TIMED_PARKED = 7,
563 TIMED_PINNED = 8,
564 UNPARKED = 9,
565 YIELDING = 10,
566 YIELDED = 11,
567 BLOCKING = 12,
568 BLOCKED = 13,
569 UNBLOCKED = 14,
570 WAITING = 15,
571 WAIT = 16, // waiting in Object.wait
572 TIMED_WAITING = 17,
573 TIMED_WAIT = 18, // waiting in timed-Object.wait
574 TERMINATED = 99,
575
576 // additional state bits
577 SUSPENDED = 1 << 8, // suspended when unmounted
578 };
579
580 static void compute_offsets();
581 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
582
583 // Testers
584 static bool is_subclass(Klass* klass) {
585 return klass->is_subclass_of(vmClasses::VirtualThread_klass());
586 }
587 static bool is_instance(oop obj);
588
589 static oop vthread_scope();
590 static oop carrier_thread(oop vthread);
591 static oop continuation(oop vthread);
592 static int state(oop vthread);
593 static void set_state(oop vthread, int state);
594 static int cmpxchg_state(oop vthread, int old_state, int new_state);
595 static oop next(oop vthread);
596 static void set_next(oop vthread, oop next_vthread);
597 static bool set_onWaitingList(oop vthread, OopHandle& list_head);
598 static jlong timeout(oop vthread);
599 static void set_timeout(oop vthread, jlong value);
600 static void set_notified(oop vthread, jboolean value);
601 static bool is_preempted(oop vthread);
602 static JavaThreadStatus map_state_to_thread_status(int state);
603 };
604
605
606 // Interface to java.lang.Throwable objects
607
608 class java_lang_Throwable: AllStatic {
609 friend class BacktraceBuilder;
610 friend class BacktraceIterator;
611
612 private:
613 // Trace constants
614 enum {
615 trace_methods_offset = 0,
616 trace_bcis_offset = 1,
617 trace_mirrors_offset = 2,
618 trace_names_offset = 3,
619 trace_conts_offset = 4,
620 trace_next_offset = 5,
621 trace_hidden_offset = 6,
622 trace_size = 7,
623 trace_chunk_size = 32
624 };
625
626 static int _backtrace_offset;
627 static int _detailMessage_offset;
628 static int _stackTrace_offset;
629 static int _depth_offset;
630 static int _cause_offset;
631 static int _static_unassigned_stacktrace_offset;
632
633 // StackTrace (programmatic access, new since 1.4)
634 static void clear_stacktrace(oop throwable);
635 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
636 static void set_stacktrace(oop throwable, oop st_element_array);
637 static oop unassigned_stacktrace();
638
639 public:
640 // Backtrace
641 static oop backtrace(oop throwable);
642 static void set_backtrace(oop throwable, oop value);
643 static int depth(oop throwable);
644 static void set_depth(oop throwable, int value);
645 // Message
646 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
647 static oop message(oop throwable);
648 static const char* message_as_utf8(oop throwable);
649 static void set_message(oop throwable, oop value);
650
651 static oop cause(oop throwable);
652
653 static void print_stack_element(outputStream *st, Method* method, int bci);
654
655 static void compute_offsets();
656 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
657
658 // Allocate space for backtrace (created but stack trace not filled in)
659 static void allocate_backtrace(Handle throwable, TRAPS);
660 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
661 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
662 // Fill in current stack trace, can cause GC
663 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
664 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
665
666 // Programmatic access to stack trace
667 static void get_stack_trace_elements(int depth, Handle backtrace, objArrayHandle stack_trace, TRAPS);
668
669 // For recreating class initialization error exceptions.
670 static Handle create_initialization_error(JavaThread* current, Handle throwable);
671
672 // Printing
673 static void print(oop throwable, outputStream* st);
674 static void print_stack_trace(Handle throwable, outputStream* st);
675 static void java_printStackTrace(Handle throwable, TRAPS);
676 // Debugging
677 friend class JavaClasses;
678 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
679 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
680 };
681
682
683 // Interface to java.lang.reflect.AccessibleObject objects
684
685 class java_lang_reflect_AccessibleObject: AllStatic {
686 private:
687 // Note that to reduce dependencies on the JDK we compute these
688 // offsets at run-time.
689 static int _override_offset;
690
691 static void compute_offsets();
692
693 public:
694 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
695
696 // Accessors
697 static jboolean override(oop reflect);
698 static void set_override(oop reflect, jboolean value);
699
700 // Debugging
701 friend class JavaClasses;
702 };
703
704
705 // Interface to java.lang.reflect.Method objects
706
707 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
708 private:
709 // Note that to reduce dependencies on the JDK we compute these
710 // offsets at run-time.
711 static int _clazz_offset;
712 static int _name_offset;
713 static int _returnType_offset;
714 static int _parameterTypes_offset;
715 static int _exceptionTypes_offset;
716 static int _slot_offset;
717 static int _modifiers_offset;
718 static int _signature_offset;
719 static int _annotations_offset;
720 static int _parameter_annotations_offset;
721 static int _annotation_default_offset;
722
723 static void compute_offsets();
724 public:
725 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
726
727 // Allocation
728 static Handle create(TRAPS);
729
730 // Accessors
731 static oop clazz(oop reflect);
732 static void set_clazz(oop reflect, oop value);
733
734 static void set_name(oop method, oop value);
735
736 static oop return_type(oop method);
737 static void set_return_type(oop method, oop value);
738
739 static oop parameter_types(oop method);
740 static void set_parameter_types(oop method, oop value);
741
742 static int slot(oop reflect);
743 static void set_slot(oop reflect, int value);
744
745 static void set_exception_types(oop method, oop value);
746 static void set_modifiers(oop method, int value);
747 static void set_signature(oop method, oop value);
748 static void set_annotations(oop method, oop value);
749 static void set_parameter_annotations(oop method, oop value);
750 static void set_annotation_default(oop method, oop value);
751
752 // Debugging
753 friend class JavaClasses;
754 };
755
756
757 // Interface to java.lang.reflect.Constructor objects
758
759 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
760 private:
761 // Note that to reduce dependencies on the JDK we compute these
762 // offsets at run-time.
763 static int _clazz_offset;
764 static int _parameterTypes_offset;
765 static int _exceptionTypes_offset;
766 static int _slot_offset;
767 static int _modifiers_offset;
768 static int _signature_offset;
769 static int _annotations_offset;
770 static int _parameter_annotations_offset;
771
772 static void compute_offsets();
773 public:
774 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
775
776 // Allocation
777 static Handle create(TRAPS);
778
779 // Accessors
780 static oop clazz(oop reflect);
781 static void set_clazz(oop reflect, oop value);
782
783 static oop parameter_types(oop constructor);
784 static void set_parameter_types(oop constructor, oop value);
785
786 static int slot(oop reflect);
787 static void set_slot(oop reflect, int value);
788
789 static void set_exception_types(oop constructor, oop value);
790 static void set_modifiers(oop constructor, int value);
791 static void set_signature(oop constructor, oop value);
792 static void set_annotations(oop constructor, oop value);
793 static void set_parameter_annotations(oop method, oop value);
794
795 // Debugging
796 friend class JavaClasses;
797 };
798
799
800 // Interface to java.lang.reflect.Field objects
801
802 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
803 private:
804 // Note that to reduce dependencies on the JDK we compute these
805 // offsets at run-time.
806 static int _clazz_offset;
807 static int _name_offset;
808 static int _type_offset;
809 static int _slot_offset;
810 static int _modifiers_offset;
811 static int _trusted_final_offset;
812 static int _signature_offset;
813 static int _annotations_offset;
814
815 static void compute_offsets();
816
817 public:
818 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
819
820 // Allocation
821 static Handle create(TRAPS);
822
823 // Accessors
824 static oop clazz(oop reflect);
825 static void set_clazz(oop reflect, oop value);
826
827 static oop name(oop field);
828 static void set_name(oop field, oop value);
829
830 static oop type(oop field);
831 static void set_type(oop field, oop value);
832
833 static int slot(oop reflect);
834 static void set_slot(oop reflect, int value);
835
836 static int modifiers(oop field);
837 static void set_modifiers(oop field, int value);
838
839 static void set_trusted_final(oop field);
840
841 static void set_signature(oop constructor, oop value);
842 static void set_annotations(oop constructor, oop value);
843
844 // Debugging
845 friend class JavaClasses;
846 };
847
848 class java_lang_reflect_Parameter {
849 private:
850 // Note that to reduce dependencies on the JDK we compute these
851 // offsets at run-time.
852 static int _name_offset;
853 static int _modifiers_offset;
854 static int _index_offset;
855 static int _executable_offset;
856
857 static void compute_offsets();
858
859 public:
860 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
861
862 // Allocation
863 static Handle create(TRAPS);
864
865 // Accessors
866 static oop name(oop field);
867 static void set_name(oop field, oop value);
868
869 static int index(oop reflect);
870 static void set_index(oop reflect, int value);
871
872 static int modifiers(oop reflect);
873 static void set_modifiers(oop reflect, int value);
874
875 static oop executable(oop constructor);
876 static void set_executable(oop constructor, oop value);
877
878 friend class JavaClasses;
879 };
880
881 #define MODULE_INJECTED_FIELDS(macro) \
882 macro(java_lang_Module, module_entry, intptr_signature, false)
883
884 class java_lang_Module {
885 private:
886 static int _loader_offset;
887 static int _name_offset;
888 static int _module_entry_offset;
889
890 static void compute_offsets();
891
892 public:
893 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
894
895 // Allocation
896 static Handle create(Handle loader, Handle module_name, TRAPS);
897
898 // Testers
899 static bool is_instance(oop obj);
900
901 // Accessors
902 static oop loader(oop module);
903 static void set_loader(oop module, oop value);
904
905 // CDS
906 static int module_entry_offset() { return _module_entry_offset; }
907
908 static oop name(oop module);
909 static void set_name(oop module, oop value);
910
911 static ModuleEntry* module_entry(oop module);
912 static ModuleEntry* module_entry_raw(oop module);
913 static void set_module_entry(oop module, ModuleEntry* module_entry);
914
915 friend class JavaClasses;
916 };
917
918 // Interface to jdk.internal.reflect.ConstantPool objects
919 class reflect_ConstantPool {
920 private:
921 // Note that to reduce dependencies on the JDK we compute these
922 // offsets at run-time.
923 static int _oop_offset;
924
925 static void compute_offsets();
926
927 public:
928 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
929
930 // Allocation
931 static Handle create(TRAPS);
932
933 // Accessors
934 static void set_cp(oop reflect, ConstantPool* value);
935 static int oop_offset() { CHECK_INIT(_oop_offset); }
936
937 static ConstantPool* get_cp(oop reflect);
938
939 // Debugging
940 friend class JavaClasses;
941 };
942
943
944 // Interface to java.lang primitive type boxing objects:
945 // - java.lang.Boolean
946 // - java.lang.Character
947 // - java.lang.Float
948 // - java.lang.Double
949 // - java.lang.Byte
950 // - java.lang.Short
951 // - java.lang.Integer
952 // - java.lang.Long
953
954 // This could be separated out into 8 individual classes.
955
956 class java_lang_boxing_object: AllStatic {
957 private:
958 static int _value_offset;
959 static int _long_value_offset;
960
961 static void compute_offsets();
962 static oop initialize_and_allocate(BasicType type, TRAPS);
963 public:
964 // Allocation. Returns a boxed value, or null for invalid type.
965 static oop create(BasicType type, jvalue* value, TRAPS);
966 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
967 static BasicType get_value(oop box, jvalue* value);
968 static BasicType set_value(oop box, jvalue* value);
969 static BasicType basic_type(oop box);
970 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
971 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
972 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
973 static void print(BasicType type, jvalue* value, outputStream* st);
974
975 static int value_offset(BasicType type) {
976 return is_double_word_type(type) ? _long_value_offset : _value_offset;
977 }
978
979 static void serialize_offsets(SerializeClosure* f);
980
981 // Debugging
982 friend class JavaClasses;
983 };
984
985
986
987 // Interface to java.lang.ref.Reference objects
988
989 class java_lang_ref_Reference: AllStatic {
990 static int _referent_offset;
991 static int _queue_offset;
992 static int _next_offset;
993 static int _discovered_offset;
994
995 static bool _offsets_initialized;
996
997 public:
998 // Accessors
999 static inline oop weak_referent_no_keepalive(oop ref);
1000 static inline oop weak_referent(oop ref);
1001 static inline oop phantom_referent_no_keepalive(oop ref);
1002 static inline oop unknown_referent_no_keepalive(oop ref);
1003 static inline void clear_referent(oop ref);
1004 static inline void clear_referent_raw(oop ref);
1005 static inline HeapWord* referent_addr_raw(oop ref);
1006 static inline oop next(oop ref);
1007 static inline void set_next(oop ref, oop value);
1008 static inline void set_next_raw(oop ref, oop value);
1009 static inline HeapWord* next_addr_raw(oop ref);
1010 static inline oop discovered(oop ref);
1011 static inline void set_discovered(oop ref, oop value);
1012 static inline void set_discovered_raw(oop ref, oop value);
1013 static inline HeapWord* discovered_addr_raw(oop ref);
1014 static bool is_referent_field(oop obj, ptrdiff_t offset);
1015 static inline bool is_final(oop ref);
1016 static inline bool is_phantom(oop ref);
1017 static inline bool is_weak(oop ref);
1018 static inline bool is_soft(oop ref);
1019
1020 static int referent_offset() { CHECK_INIT(_referent_offset); }
1021 static int queue_offset() { CHECK_INIT(_queue_offset); }
1022 static int next_offset() { CHECK_INIT(_next_offset); }
1023 static int discovered_offset() { CHECK_INIT(_discovered_offset); }
1024
1025 static void compute_offsets();
1026 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1027 };
1028
1029
1030 // Interface to java.lang.ref.SoftReference objects
1031
1032 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
1033 static int _timestamp_offset;
1034 static int _static_clock_offset;
1035
1036 public:
1037 // Accessors
1038 static jlong timestamp(oop ref);
1039
1040 // Accessors for statics
1041 static jlong clock();
1042 static void set_clock(jlong value);
1043
1044 static void compute_offsets();
1045 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1046 };
1047
1048 // Interface to java.lang.invoke.MethodHandle objects
1049
1050 class java_lang_invoke_MethodHandle: AllStatic {
1051 friend class JavaClasses;
1052
1053 private:
1054 static int _type_offset; // the MethodType of this MH
1055 static int _form_offset; // the LambdaForm of this MH
1056
1057 static void compute_offsets();
1058
1059 public:
1060 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1061
1062 // Accessors
1063 static oop type(oop mh);
1064 static void set_type(oop mh, oop mtype);
1065
1066 static oop form(oop mh);
1067 static void set_form(oop mh, oop lform);
1068
1069 // Testers
1070 static bool is_subclass(Klass* klass) {
1071 return klass->is_subclass_of(vmClasses::MethodHandle_klass());
1072 }
1073 static bool is_instance(oop obj);
1074
1075 // Accessors for code generation:
1076 static int type_offset() { CHECK_INIT(_type_offset); }
1077 static int form_offset() { CHECK_INIT(_form_offset); }
1078 };
1079
1080 // Interface to java.lang.invoke.DirectMethodHandle objects
1081
1082 class java_lang_invoke_DirectMethodHandle: AllStatic {
1083 friend class JavaClasses;
1084
1085 private:
1086 static int _member_offset; // the MemberName of this DMH
1087
1088 static void compute_offsets();
1089
1090 public:
1091 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1092
1093 // Accessors
1094 static oop member(oop mh);
1095
1096 // Testers
1097 static bool is_subclass(Klass* klass) {
1098 return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass());
1099 }
1100 static bool is_instance(oop obj);
1101
1102 // Accessors for code generation:
1103 static int member_offset() { CHECK_INIT(_member_offset); }
1104 };
1105
1106 // Interface to java.lang.invoke.LambdaForm objects
1107 // (These are a private interface for managing adapter code generation.)
1108
1109 class java_lang_invoke_LambdaForm: AllStatic {
1110 friend class JavaClasses;
1111
1112 private:
1113 static int _vmentry_offset; // type is MemberName
1114
1115 static void compute_offsets();
1116
1117 public:
1118 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1119
1120 // Accessors
1121 static oop vmentry(oop lform);
1122
1123 // Testers
1124 static bool is_subclass(Klass* klass) {
1125 return vmClasses::LambdaForm_klass() != nullptr &&
1126 klass->is_subclass_of(vmClasses::LambdaForm_klass());
1127 }
1128 static bool is_instance(oop obj);
1129
1130 // Accessors for code generation:
1131 static int vmentry_offset() { CHECK_INIT(_vmentry_offset); }
1132 };
1133
1134 // Interface to java.lang.invoke.NativeEntryPoint objects
1135 // (These are a private interface for managing adapter code generation.)
1136
1137 class jdk_internal_foreign_abi_NativeEntryPoint: AllStatic {
1138 friend class JavaClasses;
1139
1140 private:
1141 static int _method_type_offset;
1142 static int _downcall_stub_address_offset;
1143
1144 static void compute_offsets();
1145
1146 public:
1147 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1148
1149 // Accessors
1150 static oop method_type(oop entry);
1151 static jlong downcall_stub_address(oop entry);
1152
1153 // Testers
1154 static bool is_subclass(Klass* klass) {
1155 return vmClasses::NativeEntryPoint_klass() != nullptr &&
1156 klass->is_subclass_of(vmClasses::NativeEntryPoint_klass());
1157 }
1158 static bool is_instance(oop obj);
1159
1160 // Accessors for code generation:
1161 static int method_type_offset_in_bytes() { return _method_type_offset; }
1162 static int downcall_stub_address_offset_in_bytes() { return _downcall_stub_address_offset; }
1163 };
1164
1165 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic {
1166 friend class JavaClasses;
1167
1168 private:
1169 static int _inputStorage_offset;
1170 static int _outputStorage_offset;
1171 static int _volatileStorage_offset;
1172 static int _stackAlignment_offset;
1173 static int _shadowSpace_offset;
1174 static int _scratch1_offset;
1175 static int _scratch2_offset;
1176
1177 static void compute_offsets();
1178
1179 public:
1180 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1181
1182 // Accessors
1183 static objArrayOop inputStorage(oop entry);
1184 static objArrayOop outputStorage(oop entry);
1185 static objArrayOop volatileStorage(oop entry);
1186 static jint stackAlignment(oop entry);
1187 static jint shadowSpace(oop entry);
1188 static oop scratch1(oop entry);
1189 static oop scratch2(oop entry);
1190
1191 // Testers
1192 static bool is_subclass(Klass* klass) {
1193 return vmClasses::ABIDescriptor_klass() != nullptr &&
1194 klass->is_subclass_of(vmClasses::ABIDescriptor_klass());
1195 }
1196 static bool is_instance(oop obj);
1197 };
1198
1199 class jdk_internal_foreign_abi_VMStorage: AllStatic {
1200 friend class JavaClasses;
1201
1202 private:
1203 static int _type_offset;
1204 static int _indexOrOffset_offset;
1205 static int _segmentMaskOrSize_offset;
1206 static int _debugName_offset;
1207
1208 static void compute_offsets();
1209
1210 public:
1211 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1212
1213 // Accessors
1214 static jbyte type(oop entry);
1215 static jint index_or_offset(oop entry);
1216 static jshort segment_mask_or_size(oop entry);
1217 static oop debugName(oop entry);
1218
1219 // Testers
1220 static bool is_subclass(Klass* klass) {
1221 return vmClasses::VMStorage_klass() != nullptr &&
1222 klass->is_subclass_of(vmClasses::VMStorage_klass());
1223 }
1224 static bool is_instance(oop obj);
1225 };
1226
1227 class jdk_internal_foreign_abi_CallConv: AllStatic {
1228 friend class JavaClasses;
1229
1230 private:
1231 static int _argRegs_offset;
1232 static int _retRegs_offset;
1233
1234 static void compute_offsets();
1235
1236 public:
1237 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1238
1239 // Accessors
1240 static objArrayOop argRegs(oop entry);
1241 static objArrayOop retRegs(oop entry);
1242
1243 // Testers
1244 static bool is_subclass(Klass* klass) {
1245 return vmClasses::CallConv_klass() != nullptr &&
1246 klass->is_subclass_of(vmClasses::CallConv_klass());
1247 }
1248 static bool is_instance(oop obj);
1249 };
1250
1251 // Interface to java.lang.invoke.MemberName objects
1252 // (These are a private interface for Java code to query the class hierarchy.)
1253
1254 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1255 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1256
1257 class java_lang_invoke_ResolvedMethodName : AllStatic {
1258 friend class JavaClasses;
1259
1260 static int _vmtarget_offset;
1261 static int _vmholder_offset;
1262
1263 static void compute_offsets();
1264 public:
1265 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1266
1267 static int vmtarget_offset() { CHECK_INIT(_vmtarget_offset); }
1268
1269 static Method* vmtarget(oop resolved_method);
1270 static void set_vmtarget(oop resolved_method, Method* method);
1271
1272 static void set_vmholder(oop resolved_method, oop holder);
1273
1274 // find or create resolved member name
1275 static oop find_resolved_method(const methodHandle& m, TRAPS);
1276
1277 static bool is_instance(oop resolved_method);
1278 };
1279
1280
1281 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1282 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1283
1284
1285 class java_lang_invoke_MemberName: AllStatic {
1286 friend class JavaClasses;
1287
1288 private:
1289 // From java.lang.invoke.MemberName:
1290 // private Class<?> clazz; // class in which the method is defined
1291 // private String name; // may be null if not yet materialized
1292 // private Object type; // may be null if not yet materialized
1293 // private int flags; // modifier bits; see reflect.Modifier
1294 // private ResolvedMethodName method; // holds VM-specific target value
1295 // private intptr_t vmindex; // member index within class or interface
1296 static int _clazz_offset;
1297 static int _name_offset;
1298 static int _type_offset;
1299 static int _flags_offset;
1300 static int _method_offset;
1301 static int _vmindex_offset;
1302
1303 static void compute_offsets();
1304
1305 public:
1306 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1307 // Accessors
1308 static oop clazz(oop mname);
1309 static void set_clazz(oop mname, oop clazz);
1310
1311 static oop type(oop mname);
1312 static void set_type(oop mname, oop type);
1313
1314 static oop name(oop mname);
1315 static void set_name(oop mname, oop name);
1316
1317 static int flags(oop mname);
1318 static void set_flags(oop mname, int flags);
1319
1320 // Link through ResolvedMethodName field to get Method*
1321 static Method* vmtarget(oop mname);
1322 static void set_method(oop mname, oop method);
1323
1324 static intptr_t vmindex(oop mname);
1325 static void set_vmindex(oop mname, intptr_t index);
1326
1327 // Testers
1328 static bool is_subclass(Klass* klass) {
1329 return klass->is_subclass_of(vmClasses::MemberName_klass());
1330 }
1331 static bool is_instance(oop obj);
1332
1333 static bool is_method(oop obj);
1334
1335 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1336 enum {
1337 MN_IS_METHOD = 0x00010000, // method (not constructor)
1338 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1339 MN_IS_FIELD = 0x00040000, // field
1340 MN_IS_TYPE = 0x00080000, // nested type
1341 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1342 MN_TRUSTED_FINAL = 0x00200000, // trusted final field
1343 MN_HIDDEN_MEMBER = 0x00400000, // @Hidden annotation detected
1344 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1345 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1346 MN_NESTMATE_CLASS = 0x00000001,
1347 MN_HIDDEN_CLASS = 0x00000002,
1348 MN_STRONG_LOADER_LINK = 0x00000004,
1349 MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1350 // Lookup modes
1351 MN_MODULE_MODE = 0x00000010,
1352 MN_UNCONDITIONAL_MODE = 0x00000020,
1353 MN_TRUSTED_MODE = -1
1354 };
1355
1356 // Accessors for code generation:
1357 static int clazz_offset() { CHECK_INIT(_clazz_offset); }
1358 static int type_offset() { CHECK_INIT(_type_offset); }
1359 static int flags_offset() { CHECK_INIT(_flags_offset); }
1360 static int method_offset() { CHECK_INIT(_method_offset); }
1361 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1362 };
1363
1364
1365 // Interface to java.lang.invoke.MethodType objects
1366
1367 class java_lang_invoke_MethodType: AllStatic {
1368 friend class JavaClasses;
1369
1370 private:
1371 static int _rtype_offset;
1372 static int _ptypes_offset;
1373
1374 static void compute_offsets();
1375
1376 public:
1377 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1378 // Accessors
1379 static oop rtype(oop mt);
1380 static objArrayOop ptypes(oop mt);
1381
1382 static oop ptype(oop mt, int index);
1383 static int ptype_count(oop mt);
1384
1385 static int ptype_slot_count(oop mt); // extra counts for long/double
1386 static int rtype_slot_count(oop mt); // extra counts for long/double
1387
1388 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1389 static void print_signature(oop mt, outputStream* st);
1390
1391 static bool is_instance(oop obj);
1392
1393 static bool equals(oop mt1, oop mt2);
1394
1395 // Accessors for code generation:
1396 static int rtype_offset() { CHECK_INIT(_rtype_offset); }
1397 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); }
1398 };
1399
1400
1401 // Interface to java.lang.invoke.CallSite objects
1402
1403 class java_lang_invoke_CallSite: AllStatic {
1404 friend class JavaClasses;
1405
1406 private:
1407 static int _target_offset;
1408 static int _context_offset;
1409
1410 static void compute_offsets();
1411
1412 public:
1413 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1414 // Accessors
1415 static oop target( oop site);
1416 static void set_target( oop site, oop target);
1417 static void set_target_volatile( oop site, oop target);
1418
1419 static oop context_no_keepalive(oop site);
1420
1421 // Testers
1422 static bool is_subclass(Klass* klass) {
1423 return klass->is_subclass_of(vmClasses::CallSite_klass());
1424 }
1425 static bool is_instance(oop obj);
1426
1427 // Accessors for code generation:
1428 static int target_offset() { CHECK_INIT(_target_offset); }
1429 static int context_offset() { CHECK_INIT(_context_offset); }
1430 };
1431
1432 // Interface to java.lang.invoke.ConstantCallSite objects
1433
1434 class java_lang_invoke_ConstantCallSite: AllStatic {
1435 friend class JavaClasses;
1436
1437 private:
1438 static int _is_frozen_offset;
1439
1440 static void compute_offsets();
1441
1442 public:
1443 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1444 // Accessors
1445 static jboolean is_frozen(oop site);
1446
1447 // Testers
1448 static bool is_subclass(Klass* klass) {
1449 return klass->is_subclass_of(vmClasses::ConstantCallSite_klass());
1450 }
1451 static bool is_instance(oop obj);
1452 };
1453
1454 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1455
1456 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1457 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1458 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1459
1460 class DependencyContext;
1461
1462 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1463 friend class JavaClasses;
1464
1465 private:
1466 static int _vmdependencies_offset;
1467 static int _last_cleanup_offset;
1468
1469 static void compute_offsets();
1470
1471 public:
1472 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1473 // Accessors
1474 static DependencyContext vmdependencies(oop context);
1475
1476 // Testers
1477 static bool is_subclass(Klass* klass) {
1478 return klass->is_subclass_of(vmClasses::Context_klass());
1479 }
1480 static bool is_instance(oop obj);
1481 };
1482
1483 // Interface to java.security.AccessControlContext objects
1484
1485 class java_security_AccessControlContext: AllStatic {
1486 private:
1487 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1488 // so we compute the offsets at startup rather than hard-wiring them.
1489 static int _context_offset;
1490 static int _privilegedContext_offset;
1491 static int _isPrivileged_offset;
1492 static int _isAuthorized_offset;
1493
1494 static void compute_offsets();
1495 public:
1496 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1497 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1498
1499 // Debugging/initialization
1500 friend class JavaClasses;
1501 };
1502
1503
1504 // Interface to java.lang.ClassLoader objects
1505
1506 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1507 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1508
1509 class java_lang_ClassLoader : AllStatic {
1510 private:
1511 static int _loader_data_offset;
1512 static int _parent_offset;
1513 static int _parallelCapable_offset;
1514 static int _name_offset;
1515 static int _nameAndId_offset;
1516 static int _unnamedModule_offset;
1517
1518 static void compute_offsets();
1519
1520 public:
1521 // Support for CDS
1522 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1523 static int loader_data_offset() { return _loader_data_offset; }
1524
1525 static ClassLoaderData* loader_data_acquire(oop loader);
1526 static ClassLoaderData* loader_data(oop loader);
1527 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1528
1529 static oop parent(oop loader);
1530 static oop parent_no_keepalive(oop loader);
1531 static oop name(oop loader);
1532 static oop nameAndId(oop loader);
1533 static bool isAncestor(oop loader, oop cl);
1534
1535 // Support for parallelCapable field
1536 static bool parallelCapable(oop the_class_mirror);
1537
1538 static bool is_trusted_loader(oop loader);
1539
1540 // Testers
1541 static bool is_subclass(Klass* klass) {
1542 return klass->is_subclass_of(vmClasses::ClassLoader_klass());
1543 }
1544 static bool is_instance(oop obj);
1545
1546 static oop unnamedModule(oop loader);
1547
1548 // Debugging
1549 friend class JavaClasses;
1550 };
1551
1552
1553 // Interface to java.lang.System objects
1554
1555 class java_lang_System : AllStatic {
1556 private:
1557 static int _static_in_offset;
1558 static int _static_out_offset;
1559 static int _static_err_offset;
1560 static int _static_security_offset;
1561 static int _static_allow_security_offset;
1562 static int _static_never_offset;
1563
1564 public:
1565 static int in_offset() { CHECK_INIT(_static_in_offset); }
1566 static int out_offset() { CHECK_INIT(_static_out_offset); }
1567 static int err_offset() { CHECK_INIT(_static_err_offset); }
1568 static bool allow_security_manager();
1569 static bool has_security_manager();
1570
1571 static void compute_offsets();
1572 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1573
1574 // Debugging
1575 friend class JavaClasses;
1576 };
1577
1578
1579 // Interface to java.lang.StackTraceElement objects
1580
1581 class java_lang_StackTraceElement: AllStatic {
1582 private:
1583 static int _declaringClassObject_offset;
1584 static int _classLoaderName_offset;
1585 static int _moduleName_offset;
1586 static int _moduleVersion_offset;
1587 static int _declaringClass_offset;
1588 static int _methodName_offset;
1589 static int _fileName_offset;
1590 static int _lineNumber_offset;
1591
1592 // Setters
1593 static void set_classLoaderName(oop element, oop value);
1594 static void set_moduleName(oop element, oop value);
1595 static void set_moduleVersion(oop element, oop value);
1596 static void set_declaringClass(oop element, oop value);
1597 static void set_methodName(oop element, oop value);
1598 static void set_fileName(oop element, oop value);
1599 static void set_lineNumber(oop element, int value);
1600 static void set_declaringClassObject(oop element, oop value);
1601
1602 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1603 const methodHandle& method, int bci,
1604 Symbol*& source, oop& source_file, int& line_number, TRAPS);
1605
1606 public:
1607 // Create an instance of StackTraceElement
1608 static oop create(const methodHandle& method, int bci, TRAPS);
1609
1610 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1611 int version, int bci, Symbol* name, TRAPS);
1612
1613 static void compute_offsets();
1614 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1615
1616 #if INCLUDE_JVMCI
1617 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1618 #endif
1619
1620 // Debugging
1621 friend class JavaClasses;
1622 };
1623
1624
1625 class Backtrace: AllStatic {
1626 public:
1627 // Helper backtrace functions to store bci|version together.
1628 static int merge_bci_and_version(int bci, int version);
1629 static int merge_mid_and_cpref(int mid, int cpref);
1630 static int bci_at(unsigned int merged);
1631 static int version_at(unsigned int merged);
1632 static int mid_at(unsigned int merged);
1633 static int cpref_at(unsigned int merged);
1634 static int get_line_number(Method* method, int bci);
1635 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1636
1637 // Debugging
1638 friend class JavaClasses;
1639 };
1640
1641 class java_lang_ClassFrameInfo: AllStatic {
1642 private:
1643 static int _classOrMemberName_offset;
1644 static int _flags_offset;
1645
1646 public:
1647 static oop classOrMemberName(oop info);
1648 static int flags(oop info);
1649
1650 // Setters
1651 static void init_class(Handle stackFrame, const methodHandle& m);
1652 static void init_method(Handle stackFrame, const methodHandle& m, TRAPS);
1653
1654 static void compute_offsets();
1655 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1656
1657 // Debugging
1658 friend class JavaClasses;
1659 };
1660
1661 // Interface to java.lang.StackFrameInfo objects
1662
1663 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1664 macro(java_lang_StackFrameInfo, version, short_signature, false)
1665
1666 class java_lang_StackFrameInfo: AllStatic {
1667 private:
1668 static int _type_offset;
1669 static int _name_offset;
1670 static int _bci_offset;
1671 static int _version_offset;
1672 static int _contScope_offset;
1673
1674 public:
1675 // Getters
1676 static oop name(oop info);
1677 static oop type(oop info);
1678 static Method* get_method(oop info);
1679
1680 // Setters
1681 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS);
1682 static void set_name(oop info, oop value);
1683 static void set_type(oop info, oop value);
1684 static void set_bci(oop info, int value);
1685
1686 static void set_version(oop info, short value);
1687 static void set_contScope(oop info, oop value);
1688
1689 static void compute_offsets();
1690 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1691
1692 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1693
1694 // Debugging
1695 friend class JavaClasses;
1696 };
1697
1698 class java_lang_LiveStackFrameInfo: AllStatic {
1699 private:
1700 static int _monitors_offset;
1701 static int _locals_offset;
1702 static int _operands_offset;
1703 static int _mode_offset;
1704
1705 public:
1706 static void set_monitors(oop info, oop value);
1707 static void set_locals(oop info, oop value);
1708 static void set_operands(oop info, oop value);
1709 static void set_mode(oop info, int value);
1710
1711 static void compute_offsets();
1712 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1713
1714 // Debugging
1715 friend class JavaClasses;
1716 };
1717
1718 // Interface to java.lang.reflect.RecordComponent objects
1719
1720 class java_lang_reflect_RecordComponent: AllStatic {
1721 private:
1722 static int _clazz_offset;
1723 static int _name_offset;
1724 static int _type_offset;
1725 static int _accessor_offset;
1726 static int _signature_offset;
1727 static int _annotations_offset;
1728 static int _typeAnnotations_offset;
1729
1730 // Setters
1731 static void set_clazz(oop element, oop value);
1732 static void set_name(oop element, oop value);
1733 static void set_type(oop element, oop value);
1734 static void set_accessor(oop element, oop value);
1735 static void set_signature(oop element, oop value);
1736 static void set_annotations(oop element, oop value);
1737 static void set_typeAnnotations(oop element, oop value);
1738
1739 public:
1740 // Create an instance of RecordComponent
1741 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1742
1743 static void compute_offsets();
1744 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1745
1746 // Debugging
1747 friend class JavaClasses;
1748 };
1749
1750
1751 // Interface to java.lang.AssertionStatusDirectives objects
1752
1753 class java_lang_AssertionStatusDirectives: AllStatic {
1754 private:
1755 static int _classes_offset;
1756 static int _classEnabled_offset;
1757 static int _packages_offset;
1758 static int _packageEnabled_offset;
1759 static int _deflt_offset;
1760
1761 public:
1762 // Setters
1763 static void set_classes(oop obj, oop val);
1764 static void set_classEnabled(oop obj, oop val);
1765 static void set_packages(oop obj, oop val);
1766 static void set_packageEnabled(oop obj, oop val);
1767 static void set_deflt(oop obj, bool val);
1768
1769 static void compute_offsets();
1770 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1771
1772 // Debugging
1773 friend class JavaClasses;
1774 };
1775
1776
1777 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1778 private:
1779 static int _owner_offset;
1780 public:
1781 static void compute_offsets();
1782 static oop get_owner_threadObj(oop obj);
1783 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1784 };
1785
1786 // Interface to jdk.internal.misc.UnsafeConsants
1787
1788 class jdk_internal_misc_UnsafeConstants : AllStatic {
1789 public:
1790 static void set_unsafe_constants();
1791 static void compute_offsets() { }
1792 static void serialize_offsets(SerializeClosure* f) { }
1793 };
1794
1795 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects
1796
1797 class vector_VectorPayload : AllStatic {
1798 private:
1799 static int _payload_offset;
1800 public:
1801 static void set_payload(oop o, oop val);
1802
1803 static void compute_offsets();
1804 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1805
1806 // Testers
1807 static bool is_subclass(Klass* klass) {
1808 return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass());
1809 }
1810 static bool is_instance(oop obj);
1811 };
1812
1813 class java_lang_Integer : AllStatic {
1814 public:
1815 static jint value(oop obj);
1816 };
1817
1818 class java_lang_Long : AllStatic {
1819 public:
1820 static jlong value(oop obj);
1821 };
1822
1823 class java_lang_Character : AllStatic {
1824 public:
1825 static jchar value(oop obj);
1826 };
1827
1828 class java_lang_Short : AllStatic {
1829 public:
1830 static jshort value(oop obj);
1831 };
1832
1833 class java_lang_Byte : AllStatic {
1834 public:
1835 static jbyte value(oop obj);
1836 };
1837
1838 class java_lang_Boolean : AllStatic {
1839 private:
1840 static int _static_TRUE_offset;
1841 static int _static_FALSE_offset;
1842 public:
1843 static Symbol* symbol();
1844 static void compute_offsets(InstanceKlass* k);
1845 static oop get_TRUE(InstanceKlass *k);
1846 static oop get_FALSE(InstanceKlass *k);
1847 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1848 static jboolean value(oop obj);
1849 };
1850
1851 class java_lang_Integer_IntegerCache : AllStatic {
1852 private:
1853 static int _static_cache_offset;
1854 public:
1855 static Symbol* symbol();
1856 static void compute_offsets(InstanceKlass* k);
1857 static objArrayOop cache(InstanceKlass *k);
1858 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1859 };
1860
1861 class java_lang_Long_LongCache : AllStatic {
1862 private:
1863 static int _static_cache_offset;
1864 public:
1865 static Symbol* symbol();
1866 static void compute_offsets(InstanceKlass* k);
1867 static objArrayOop cache(InstanceKlass *k);
1868 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1869 };
1870
1871 class java_lang_Character_CharacterCache : AllStatic {
1872 private:
1873 static int _static_cache_offset;
1874 public:
1875 static Symbol* symbol();
1876 static void compute_offsets(InstanceKlass* k);
1877 static objArrayOop cache(InstanceKlass *k);
1878 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1879 };
1880
1881 class java_lang_Short_ShortCache : AllStatic {
1882 private:
1883 static int _static_cache_offset;
1884 public:
1885 static Symbol* symbol();
1886 static void compute_offsets(InstanceKlass* k);
1887 static objArrayOop cache(InstanceKlass *k);
1888 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1889 };
1890
1891 class java_lang_Byte_ByteCache : AllStatic {
1892 private:
1893 static int _static_cache_offset;
1894 public:
1895 static Symbol* symbol();
1896 static void compute_offsets(InstanceKlass* k);
1897 static objArrayOop cache(InstanceKlass *k);
1898 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1899 };
1900
1901
1902 // Interface to java.lang.InternalError objects
1903
1904 #define INTERNALERROR_INJECTED_FIELDS(macro) \
1905 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1906
1907 class java_lang_InternalError : AllStatic {
1908 private:
1909 static int _during_unsafe_access_offset;
1910 public:
1911 static jboolean during_unsafe_access(oop internal_error);
1912 static void set_during_unsafe_access(oop internal_error);
1913 static void compute_offsets();
1914 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1915 };
1916
1917 // Use to declare fields that need to be injected into Java classes
1918 // for the JVM to use. The name_index and signature_index are
1919 // declared in vmSymbols. The may_be_java flag is used to declare
1920 // fields that might already exist in Java but should be injected if
1921 // they don't. Otherwise the field is unconditionally injected and
1922 // the JVM uses the injected one. This is to ensure that name
1923 // collisions don't occur. In general may_be_java should be false
1924 // unless there's a good reason.
1925
1926 class InjectedField {
1927 public:
1928 const vmClassID klass_id;
1929 const vmSymbolID name_index;
1930 const vmSymbolID signature_index;
1931 const bool may_be_java;
1932
1933
1934 Klass* klass() const { return vmClasses::klass_at(klass_id); }
1935 Symbol* name() const { return lookup_symbol(name_index); }
1936 Symbol* signature() const { return lookup_symbol(signature_index); }
1937
1938 int compute_offset();
1939
1940 // Find the Symbol for this index
1941 static Symbol* lookup_symbol(vmSymbolID symbol_index) {
1942 return Symbol::vm_symbol_at(symbol_index);
1943 }
1944 };
1945
1946
1947 // Interface to hard-coded offset checking
1948
1949 enum class InjectedFieldID : int;
1950
1951 class JavaClasses : AllStatic {
1952 private:
1953
1954 static InjectedField _injected_fields[];
1955
1956 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1957 public:
1958
1959 static int compute_injected_offset(InjectedFieldID id);
1960
1961 static void compute_offsets();
1962 static void check_offsets() PRODUCT_RETURN;
1963 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1964 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1965 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1966
1967 static void compute_offset(int &dest_offset,
1968 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
1969 bool is_static = false);
1970 static void compute_offset(int& dest_offset, InstanceKlass* ik,
1971 const char* name_string, Symbol* signature_symbol,
1972 bool is_static = false);
1973 };
1974
1975 #undef CHECK_INIT
1976
1977 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP