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, Handle protection_domain, 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
326 static oop reflection_data(oop java_class);
327 static void set_reflection_data(oop java_class, oop reflection_data);
328 static bool has_reflection_data(oop java_class);
329
330 static int component_mirror_offset() { return _component_mirror_offset; }
331
332 static oop class_loader(oop java_class);
333 static void set_module(oop java_class, oop module);
334 static oop module(oop java_class);
335
336 static oop name(Handle java_class, TRAPS);
337
338 static oop source_file(oop java_class);
339 static void set_source_file(oop java_class, oop source_file);
340
341 static size_t oop_size(oop java_class);
342 static void set_oop_size(HeapWord* java_class, size_t size);
343 static int static_oop_field_count(oop java_class);
344 static void set_static_oop_field_count(oop java_class, int size);
345
346 static GrowableArray<Klass*>* fixup_mirror_list() {
347 return _fixup_mirror_list;
348 }
349 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
350 _fixup_mirror_list = v;
351 }
352
353 static GrowableArray<Klass*>* fixup_module_field_list() {
354 return _fixup_module_field_list;
355 }
356 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
357 _fixup_module_field_list = v;
358 }
359
360 // Debugging
361 friend class JavaClasses;
362 };
363
364 // Interface to java.lang.Thread objects
365
366 #define THREAD_INJECTED_FIELDS(macro) \
367 macro(java_lang_Thread, jvmti_thread_state, intptr_signature, false) \
368 macro(java_lang_Thread, jvmti_VTMS_transition_disable_count, int_signature, false) \
369 macro(java_lang_Thread, jvmti_is_in_VTMS_transition, bool_signature, false) \
370 JFR_ONLY(macro(java_lang_Thread, jfr_epoch, short_signature, false))
371
372 class java_lang_Thread : AllStatic {
373 friend class java_lang_VirtualThread;
374 friend class JVMCIVMStructs;
375 private:
376 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
377 // so we compute the offsets at startup rather than hard-wiring them.
378 static int _holder_offset;
379 static int _name_offset;
380 static int _contextClassLoader_offset;
381 static int _eetop_offset;
382 static int _jvmti_thread_state_offset;
383 static int _jvmti_VTMS_transition_disable_count_offset;
384 static int _jvmti_is_in_VTMS_transition_offset;
385 static int _interrupted_offset;
386 static int _interruptLock_offset;
387 static int _tid_offset;
388 static int _continuation_offset;
389 static int _park_blocker_offset;
390 static int _scopedValueBindings_offset;
391 JFR_ONLY(static int _jfr_epoch_offset;)
392
393 static void compute_offsets();
394
395 public:
396 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
397
398 // Returns the JavaThread associated with the thread obj
399 static JavaThread* thread(oop java_thread);
400 static JavaThread* thread_acquire(oop java_thread);
401 // Set JavaThread for instance
402 static void set_thread(oop java_thread, JavaThread* thread);
403 static void release_set_thread(oop java_thread, JavaThread* thread);
404 // FieldHolder
405 static oop holder(oop java_thread);
406 // interruptLock
407 static oop interrupt_lock(oop java_thread);
408 // Interrupted status
409 static bool interrupted(oop java_thread);
410 static void set_interrupted(oop java_thread, bool val);
411 // Name
412 static oop name(oop java_thread);
413 static void set_name(oop java_thread, oop name);
414 // Priority
415 static ThreadPriority priority(oop java_thread);
416 static void set_priority(oop java_thread, ThreadPriority priority);
417 // Thread group
418 static oop threadGroup(oop java_thread);
419 // Alive (NOTE: this is not really a field, but provides the correct
420 // definition without doing a Java call)
421 static bool is_alive(oop java_thread);
422 // Daemon
423 static bool is_daemon(oop java_thread);
424 static void set_daemon(oop java_thread);
425 // Context ClassLoader
426 static oop context_class_loader(oop java_thread);
427 // Stack size hint
428 static jlong stackSize(oop java_thread);
429 // Thread ID
430 static int64_t thread_id(oop java_thread);
431 static ByteSize thread_id_offset();
432 // Continuation
433 static inline oop continuation(oop java_thread);
434
435 static JvmtiThreadState* jvmti_thread_state(oop java_thread);
436 static void set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state);
437 static int VTMS_transition_disable_count(oop java_thread);
438 static void inc_VTMS_transition_disable_count(oop java_thread);
439 static void dec_VTMS_transition_disable_count(oop java_thread);
440 static bool is_in_VTMS_transition(oop java_thread);
441 static void set_is_in_VTMS_transition(oop java_thread, bool val);
442 static int is_in_VTMS_transition_offset();
443
444 // Clear all scoped value bindings on error
445 static void clear_scopedValueBindings(oop java_thread);
446
447 // Blocker object responsible for thread parking
448 static oop park_blocker(oop java_thread);
449
450 // Write thread status info to threadStatus field of java.lang.Thread.
451 static void set_thread_status(oop java_thread_oop, JavaThreadStatus status);
452 // Read thread status info from threadStatus field of java.lang.Thread.
453 static JavaThreadStatus get_thread_status(oop java_thread_oop);
454
455 static const char* thread_status_name(oop java_thread_oop);
456
457 // Fill in current stack trace, can cause GC
458 static oop async_get_stack_trace(oop java_thread, TRAPS);
459
460 JFR_ONLY(static u2 jfr_epoch(oop java_thread);)
461 JFR_ONLY(static void set_jfr_epoch(oop java_thread, u2 epoch);)
462 JFR_ONLY(static int jfr_epoch_offset() { CHECK_INIT(_jfr_epoch_offset); })
463
464 // Debugging
465 friend class JavaClasses;
466 };
467
468 // Interface to java.lang.Thread$FieldHolder objects
469
470 class java_lang_Thread_FieldHolder : AllStatic {
471 private:
472 static int _group_offset;
473 static int _priority_offset;
474 static int _stackSize_offset;
475 static int _daemon_offset;
476 static int _thread_status_offset;
477
478 static void compute_offsets();
479
480 public:
481 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
482
483 static oop threadGroup(oop holder);
484
485 static ThreadPriority priority(oop holder);
486 static void set_priority(oop holder, ThreadPriority priority);
487
488 static jlong stackSize(oop holder);
489
490 static bool is_daemon(oop holder);
491 static void set_daemon(oop holder, bool val);
492
493 static void set_thread_status(oop holder, JavaThreadStatus status);
494 static JavaThreadStatus get_thread_status(oop holder);
495
496 friend class JavaClasses;
497 };
498
499 // Interface to java.lang.Thread$Constants objects
500
501 class java_lang_Thread_Constants : AllStatic {
502 private:
503 static int _static_VTHREAD_GROUP_offset;
504 static int _static_NOT_SUPPORTED_CLASSLOADER_offset;
505
506 static void compute_offsets();
507 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
508
509 public:
510 static oop get_VTHREAD_GROUP();
511
512 friend class JavaClasses;
513 };
514
515 // Interface to java.lang.ThreadGroup objects
516
517 class java_lang_ThreadGroup : AllStatic {
518 private:
519 static int _parent_offset;
520 static int _name_offset;
521 static int _maxPriority_offset;
522 static int _daemon_offset;
523
524 static void compute_offsets();
525 public:
526 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
527
528 // parent ThreadGroup
529 static oop parent(oop java_thread_group);
530 // name
531 static const char* name(oop java_thread_group);
532 // maxPriority in group
533 static ThreadPriority maxPriority(oop java_thread_group);
534 // Daemon
535 static bool is_daemon(oop java_thread_group);
536
537 // Debugging
538 friend class JavaClasses;
539 };
540
541
542 // Interface to java.lang.VirtualThread objects
543
544 class java_lang_VirtualThread : AllStatic {
545 private:
546 static int static_vthread_scope_offset;
547 static int _carrierThread_offset;
548 static int _continuation_offset;
549 static int _state_offset;
550 static int _next_offset;
551 static int _onWaitingList_offset;
552 static int _notified_offset;
553 static int _recheckInterval_offset;
554 static int _timeout_offset;
555 JFR_ONLY(static int _jfr_epoch_offset;)
556 public:
557 enum {
558 NEW = 0,
559 STARTED = 1,
560 RUNNING = 2,
561 PARKING = 3,
562 PARKED = 4,
563 PINNED = 5,
564 TIMED_PARKING = 6,
565 TIMED_PARKED = 7,
566 TIMED_PINNED = 8,
567 UNPARKED = 9,
568 YIELDING = 10,
569 YIELDED = 11,
570 BLOCKING = 12,
571 BLOCKED = 13,
572 UNBLOCKED = 14,
573 WAITING = 15,
574 WAIT = 16, // waiting in Object.wait
575 TIMED_WAITING = 17,
576 TIMED_WAIT = 18, // waiting in timed-Object.wait
577 TERMINATED = 99,
578
579 // additional state bits
580 SUSPENDED = 1 << 8, // suspended when unmounted
581 };
582
583 static void compute_offsets();
584 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
585
586 // Testers
587 static bool is_subclass(Klass* klass) {
588 return klass->is_subclass_of(vmClasses::VirtualThread_klass());
589 }
590 static bool is_instance(oop obj);
591
592 static oop vthread_scope();
593 static oop carrier_thread(oop vthread);
594 static oop continuation(oop vthread);
595 static int state(oop vthread);
596 static void set_state(oop vthread, int state);
597 static int cmpxchg_state(oop vthread, int old_state, int new_state);
598 static oop next(oop vthread);
599 static void set_next(oop vthread, oop next_vthread);
600 static bool set_onWaitingList(oop vthread, OopHandle& list_head);
601 static jlong timeout(oop vthread);
602 static void set_timeout(oop vthread, jlong value);
603 static void set_notified(oop vthread, jboolean value);
604 static bool is_preempted(oop vthread);
605 static JavaThreadStatus map_state_to_thread_status(int state);
606 };
607
608
609 // Interface to java.lang.Throwable objects
610
611 class java_lang_Throwable: AllStatic {
612 friend class BacktraceBuilder;
613 friend class BacktraceIterator;
614
615 private:
616 // Trace constants
617 enum {
618 trace_methods_offset = 0,
619 trace_bcis_offset = 1,
620 trace_mirrors_offset = 2,
621 trace_names_offset = 3,
622 trace_conts_offset = 4,
623 trace_next_offset = 5,
624 trace_hidden_offset = 6,
625 trace_size = 7,
626 trace_chunk_size = 32
627 };
628
629 static int _backtrace_offset;
630 static int _detailMessage_offset;
631 static int _stackTrace_offset;
632 static int _depth_offset;
633 static int _cause_offset;
634 static int _static_unassigned_stacktrace_offset;
635
636 // StackTrace (programmatic access, new since 1.4)
637 static void clear_stacktrace(oop throwable);
638 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
639 static void set_stacktrace(oop throwable, oop st_element_array);
640 static oop unassigned_stacktrace();
641
642 public:
643 // Backtrace
644 static oop backtrace(oop throwable);
645 static void set_backtrace(oop throwable, oop value);
646 static int depth(oop throwable);
647 static void set_depth(oop throwable, int value);
648 // Message
649 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
650 static oop message(oop throwable);
651 static const char* message_as_utf8(oop throwable);
652 static void set_message(oop throwable, oop value);
653
654 static oop cause(oop throwable);
655
656 static void print_stack_element(outputStream *st, Method* method, int bci);
657
658 static void compute_offsets();
659 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
660
661 // Allocate space for backtrace (created but stack trace not filled in)
662 static void allocate_backtrace(Handle throwable, TRAPS);
663 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
664 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
665 // Fill in current stack trace, can cause GC
666 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
667 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
668
669 // Programmatic access to stack trace
670 static void get_stack_trace_elements(int depth, Handle backtrace, objArrayHandle stack_trace, TRAPS);
671
672 // For recreating class initialization error exceptions.
673 static Handle create_initialization_error(JavaThread* current, Handle throwable);
674
675 static oop create_exception_instance(Symbol* class_name, TRAPS);
676
677 // Printing
678 static void print(oop throwable, outputStream* st);
679 static void print_stack_trace(Handle throwable, outputStream* st);
680 static void java_printStackTrace(Handle throwable, TRAPS);
681 // Debugging
682 friend class JavaClasses;
683 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
684 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
685 };
686
687
688 // Interface to java.lang.reflect.AccessibleObject objects
689
690 class java_lang_reflect_AccessibleObject: AllStatic {
691 private:
692 // Note that to reduce dependencies on the JDK we compute these
693 // offsets at run-time.
694 static int _override_offset;
695
696 static void compute_offsets();
697
698 public:
699 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
700
701 // Accessors
702 static jboolean override(oop reflect);
703 static void set_override(oop reflect, jboolean value);
704
705 // Debugging
706 friend class JavaClasses;
707 };
708
709
710 // Interface to java.lang.reflect.Method objects
711
712 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
713 private:
714 // Note that to reduce dependencies on the JDK we compute these
715 // offsets at run-time.
716 static int _clazz_offset;
717 static int _name_offset;
718 static int _returnType_offset;
719 static int _parameterTypes_offset;
720 static int _exceptionTypes_offset;
721 static int _slot_offset;
722 static int _modifiers_offset;
723 static int _signature_offset;
724 static int _annotations_offset;
725 static int _parameter_annotations_offset;
726 static int _annotation_default_offset;
727
728 static void compute_offsets();
729 public:
730 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
731
732 // Allocation
733 static Handle create(TRAPS);
734
735 // Accessors
736 static oop clazz(oop reflect);
737 static void set_clazz(oop reflect, oop value);
738
739 static void set_name(oop method, oop value);
740
741 static oop return_type(oop method);
742 static void set_return_type(oop method, oop value);
743
744 static oop parameter_types(oop method);
745 static void set_parameter_types(oop method, oop value);
746
747 static int slot(oop reflect);
748 static void set_slot(oop reflect, int value);
749
750 static void set_exception_types(oop method, oop value);
751 static void set_modifiers(oop method, int value);
752 static void set_signature(oop method, oop value);
753 static void set_annotations(oop method, oop value);
754 static void set_parameter_annotations(oop method, oop value);
755 static void set_annotation_default(oop method, oop value);
756
757 // Debugging
758 friend class JavaClasses;
759 };
760
761
762 // Interface to java.lang.reflect.Constructor objects
763
764 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
765 private:
766 // Note that to reduce dependencies on the JDK we compute these
767 // offsets at run-time.
768 static int _clazz_offset;
769 static int _parameterTypes_offset;
770 static int _exceptionTypes_offset;
771 static int _slot_offset;
772 static int _modifiers_offset;
773 static int _signature_offset;
774 static int _annotations_offset;
775 static int _parameter_annotations_offset;
776
777 static void compute_offsets();
778 public:
779 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
780
781 // Allocation
782 static Handle create(TRAPS);
783
784 // Accessors
785 static oop clazz(oop reflect);
786 static void set_clazz(oop reflect, oop value);
787
788 static oop parameter_types(oop constructor);
789 static void set_parameter_types(oop constructor, oop value);
790
791 static int slot(oop reflect);
792 static void set_slot(oop reflect, int value);
793
794 static void set_exception_types(oop constructor, oop value);
795 static void set_modifiers(oop constructor, int value);
796 static void set_signature(oop constructor, oop value);
797 static void set_annotations(oop constructor, oop value);
798 static void set_parameter_annotations(oop method, oop value);
799
800 // Debugging
801 friend class JavaClasses;
802 };
803
804
805 // Interface to java.lang.reflect.Field objects
806
807 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
808 private:
809 // Note that to reduce dependencies on the JDK we compute these
810 // offsets at run-time.
811 static int _clazz_offset;
812 static int _name_offset;
813 static int _type_offset;
814 static int _slot_offset;
815 static int _modifiers_offset;
816 static int _trusted_final_offset;
817 static int _signature_offset;
818 static int _annotations_offset;
819
820 static void compute_offsets();
821
822 public:
823 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
824
825 // Allocation
826 static Handle create(TRAPS);
827
828 // Accessors
829 static oop clazz(oop reflect);
830 static void set_clazz(oop reflect, oop value);
831
832 static oop name(oop field);
833 static void set_name(oop field, oop value);
834
835 static oop type(oop field);
836 static void set_type(oop field, oop value);
837
838 static int slot(oop reflect);
839 static void set_slot(oop reflect, int value);
840
841 static int modifiers(oop field);
842 static void set_modifiers(oop field, int value);
843
844 static void set_trusted_final(oop field);
845
846 static void set_signature(oop constructor, oop value);
847 static void set_annotations(oop constructor, oop value);
848
849 // Debugging
850 friend class JavaClasses;
851 };
852
853 class java_lang_reflect_Parameter {
854 private:
855 // Note that to reduce dependencies on the JDK we compute these
856 // offsets at run-time.
857 static int _name_offset;
858 static int _modifiers_offset;
859 static int _index_offset;
860 static int _executable_offset;
861
862 static void compute_offsets();
863
864 public:
865 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
866
867 // Allocation
868 static Handle create(TRAPS);
869
870 // Accessors
871 static oop name(oop field);
872 static void set_name(oop field, oop value);
873
874 static int index(oop reflect);
875 static void set_index(oop reflect, int value);
876
877 static int modifiers(oop reflect);
878 static void set_modifiers(oop reflect, int value);
879
880 static oop executable(oop constructor);
881 static void set_executable(oop constructor, oop value);
882
883 friend class JavaClasses;
884 };
885
886 #define MODULE_INJECTED_FIELDS(macro) \
887 macro(java_lang_Module, module_entry, intptr_signature, false)
888
889 class java_lang_Module {
890 private:
891 static int _loader_offset;
892 static int _name_offset;
893 static int _module_entry_offset;
894
895 static void compute_offsets();
896
897 public:
898 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
899
900 // Allocation
901 static Handle create(Handle loader, Handle module_name, TRAPS);
902
903 // Testers
904 static bool is_instance(oop obj);
905
906 // Accessors
907 static oop loader(oop module);
908 static void set_loader(oop module, oop value);
909
910 // CDS
911 static int module_entry_offset() { return _module_entry_offset; }
912
913 static oop name(oop module);
914 static void set_name(oop module, oop value);
915
916 static ModuleEntry* module_entry(oop module);
917 static ModuleEntry* module_entry_raw(oop module);
918 static void set_module_entry(oop module, ModuleEntry* module_entry);
919
920 friend class JavaClasses;
921 };
922
923 // Interface to jdk.internal.reflect.ConstantPool objects
924 class reflect_ConstantPool {
925 private:
926 // Note that to reduce dependencies on the JDK we compute these
927 // offsets at run-time.
928 static int _oop_offset;
929
930 static void compute_offsets();
931
932 public:
933 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
934
935 // Allocation
936 static Handle create(TRAPS);
937
938 // Accessors
939 static void set_cp(oop reflect, ConstantPool* value);
940 static int oop_offset() { CHECK_INIT(_oop_offset); }
941
942 static ConstantPool* get_cp(oop reflect);
943
944 // Debugging
945 friend class JavaClasses;
946 };
947
948
949 // Interface to java.lang primitive type boxing objects:
950 // - java.lang.Boolean
951 // - java.lang.Character
952 // - java.lang.Float
953 // - java.lang.Double
954 // - java.lang.Byte
955 // - java.lang.Short
956 // - java.lang.Integer
957 // - java.lang.Long
958
959 // This could be separated out into 8 individual classes.
960
961 class java_lang_boxing_object: AllStatic {
962 private:
963 static int _value_offset;
964 static int _long_value_offset;
965
966 static void compute_offsets();
967 static oop initialize_and_allocate(BasicType type, TRAPS);
968 public:
969 // Allocation. Returns a boxed value, or null for invalid type.
970 static oop create(BasicType type, jvalue* value, TRAPS);
971 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
972 static BasicType get_value(oop box, jvalue* value);
973 static BasicType set_value(oop box, jvalue* value);
974 static BasicType basic_type(oop box);
975 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
976 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
977 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
978 static void print(BasicType type, jvalue* value, outputStream* st);
979
980 static int value_offset(BasicType type) {
981 return is_double_word_type(type) ? _long_value_offset : _value_offset;
982 }
983
984 static void serialize_offsets(SerializeClosure* f);
985
986 // Debugging
987 friend class JavaClasses;
988 };
989
990
991
992 // Interface to java.lang.ref.Reference objects
993
994 class java_lang_ref_Reference: AllStatic {
995 static int _referent_offset;
996 static int _queue_offset;
997 static int _next_offset;
998 static int _discovered_offset;
999
1000 static bool _offsets_initialized;
1001
1002 public:
1003 // Accessors
1004 static inline oop weak_referent_no_keepalive(oop ref);
1005 static inline oop weak_referent(oop ref);
1006 static inline oop phantom_referent_no_keepalive(oop ref);
1007 static inline oop unknown_referent_no_keepalive(oop ref);
1008 static inline void clear_referent(oop ref);
1009 static inline void clear_referent_raw(oop ref);
1010 static inline HeapWord* referent_addr_raw(oop ref);
1011 static inline oop next(oop ref);
1012 static inline void set_next(oop ref, oop value);
1013 static inline void set_next_raw(oop ref, oop value);
1014 static inline HeapWord* next_addr_raw(oop ref);
1015 static inline oop discovered(oop ref);
1016 static inline void set_discovered(oop ref, oop value);
1017 static inline void set_discovered_raw(oop ref, oop value);
1018 static inline HeapWord* discovered_addr_raw(oop ref);
1019 static bool is_referent_field(oop obj, ptrdiff_t offset);
1020 static inline bool is_final(oop ref);
1021 static inline bool is_phantom(oop ref);
1022 static inline bool is_weak(oop ref);
1023 static inline bool is_soft(oop ref);
1024
1025 static int referent_offset() { CHECK_INIT(_referent_offset); }
1026 static int queue_offset() { CHECK_INIT(_queue_offset); }
1027 static int next_offset() { CHECK_INIT(_next_offset); }
1028 static int discovered_offset() { CHECK_INIT(_discovered_offset); }
1029
1030 static void compute_offsets();
1031 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1032 };
1033
1034
1035 // Interface to java.lang.ref.SoftReference objects
1036
1037 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
1038 static int _timestamp_offset;
1039 static int _static_clock_offset;
1040
1041 public:
1042 // Accessors
1043 static jlong timestamp(oop ref);
1044
1045 // Accessors for statics
1046 static jlong clock();
1047 static void set_clock(jlong value);
1048
1049 static void compute_offsets();
1050 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1051 };
1052
1053 // Interface to java.lang.invoke.MethodHandle objects
1054
1055 class java_lang_invoke_MethodHandle: AllStatic {
1056 friend class JavaClasses;
1057
1058 private:
1059 static int _type_offset; // the MethodType of this MH
1060 static int _form_offset; // the LambdaForm of this MH
1061
1062 static void compute_offsets();
1063
1064 public:
1065 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1066
1067 // Accessors
1068 static oop type(oop mh);
1069 static void set_type(oop mh, oop mtype);
1070
1071 static oop form(oop mh);
1072 static void set_form(oop mh, oop lform);
1073
1074 // Testers
1075 static bool is_subclass(Klass* klass) {
1076 return klass->is_subclass_of(vmClasses::MethodHandle_klass());
1077 }
1078 static bool is_instance(oop obj);
1079
1080 // Accessors for code generation:
1081 static int type_offset() { CHECK_INIT(_type_offset); }
1082 static int form_offset() { CHECK_INIT(_form_offset); }
1083 };
1084
1085 // Interface to java.lang.invoke.DirectMethodHandle objects
1086
1087 class java_lang_invoke_DirectMethodHandle: AllStatic {
1088 friend class JavaClasses;
1089
1090 private:
1091 static int _member_offset; // the MemberName of this DMH
1092
1093 static void compute_offsets();
1094
1095 public:
1096 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1097
1098 // Accessors
1099 static oop member(oop mh);
1100
1101 // Testers
1102 static bool is_subclass(Klass* klass) {
1103 return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass());
1104 }
1105 static bool is_instance(oop obj);
1106
1107 // Accessors for code generation:
1108 static int member_offset() { CHECK_INIT(_member_offset); }
1109 };
1110
1111 // Interface to java.lang.invoke.LambdaForm objects
1112 // (These are a private interface for managing adapter code generation.)
1113
1114 class java_lang_invoke_LambdaForm: AllStatic {
1115 friend class JavaClasses;
1116
1117 private:
1118 static int _vmentry_offset; // type is MemberName
1119
1120 static void compute_offsets();
1121
1122 public:
1123 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1124
1125 // Accessors
1126 static oop vmentry(oop lform);
1127
1128 // Testers
1129 static bool is_subclass(Klass* klass) {
1130 return vmClasses::LambdaForm_klass() != nullptr &&
1131 klass->is_subclass_of(vmClasses::LambdaForm_klass());
1132 }
1133 static bool is_instance(oop obj);
1134
1135 // Accessors for code generation:
1136 static int vmentry_offset() { CHECK_INIT(_vmentry_offset); }
1137 };
1138
1139 // Interface to java.lang.invoke.NativeEntryPoint objects
1140 // (These are a private interface for managing adapter code generation.)
1141
1142 class jdk_internal_foreign_abi_NativeEntryPoint: AllStatic {
1143 friend class JavaClasses;
1144
1145 private:
1146 static int _method_type_offset;
1147 static int _downcall_stub_address_offset;
1148
1149 static void compute_offsets();
1150
1151 public:
1152 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1153
1154 // Accessors
1155 static oop method_type(oop entry);
1156 static jlong downcall_stub_address(oop entry);
1157
1158 // Testers
1159 static bool is_subclass(Klass* klass) {
1160 return vmClasses::NativeEntryPoint_klass() != nullptr &&
1161 klass->is_subclass_of(vmClasses::NativeEntryPoint_klass());
1162 }
1163 static bool is_instance(oop obj);
1164
1165 // Accessors for code generation:
1166 static int method_type_offset_in_bytes() { return _method_type_offset; }
1167 static int downcall_stub_address_offset_in_bytes() { return _downcall_stub_address_offset; }
1168 };
1169
1170 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic {
1171 friend class JavaClasses;
1172
1173 private:
1174 static int _inputStorage_offset;
1175 static int _outputStorage_offset;
1176 static int _volatileStorage_offset;
1177 static int _stackAlignment_offset;
1178 static int _shadowSpace_offset;
1179 static int _scratch1_offset;
1180 static int _scratch2_offset;
1181
1182 static void compute_offsets();
1183
1184 public:
1185 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1186
1187 // Accessors
1188 static objArrayOop inputStorage(oop entry);
1189 static objArrayOop outputStorage(oop entry);
1190 static objArrayOop volatileStorage(oop entry);
1191 static jint stackAlignment(oop entry);
1192 static jint shadowSpace(oop entry);
1193 static oop scratch1(oop entry);
1194 static oop scratch2(oop entry);
1195
1196 // Testers
1197 static bool is_subclass(Klass* klass) {
1198 return vmClasses::ABIDescriptor_klass() != nullptr &&
1199 klass->is_subclass_of(vmClasses::ABIDescriptor_klass());
1200 }
1201 static bool is_instance(oop obj);
1202 };
1203
1204 class jdk_internal_foreign_abi_VMStorage: AllStatic {
1205 friend class JavaClasses;
1206
1207 private:
1208 static int _type_offset;
1209 static int _indexOrOffset_offset;
1210 static int _segmentMaskOrSize_offset;
1211 static int _debugName_offset;
1212
1213 static void compute_offsets();
1214
1215 public:
1216 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1217
1218 // Accessors
1219 static jbyte type(oop entry);
1220 static jint index_or_offset(oop entry);
1221 static jshort segment_mask_or_size(oop entry);
1222 static oop debugName(oop entry);
1223
1224 // Testers
1225 static bool is_subclass(Klass* klass) {
1226 return vmClasses::VMStorage_klass() != nullptr &&
1227 klass->is_subclass_of(vmClasses::VMStorage_klass());
1228 }
1229 static bool is_instance(oop obj);
1230 };
1231
1232 class jdk_internal_foreign_abi_CallConv: AllStatic {
1233 friend class JavaClasses;
1234
1235 private:
1236 static int _argRegs_offset;
1237 static int _retRegs_offset;
1238
1239 static void compute_offsets();
1240
1241 public:
1242 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1243
1244 // Accessors
1245 static objArrayOop argRegs(oop entry);
1246 static objArrayOop retRegs(oop entry);
1247
1248 // Testers
1249 static bool is_subclass(Klass* klass) {
1250 return vmClasses::CallConv_klass() != nullptr &&
1251 klass->is_subclass_of(vmClasses::CallConv_klass());
1252 }
1253 static bool is_instance(oop obj);
1254 };
1255
1256 // Interface to java.lang.invoke.MemberName objects
1257 // (These are a private interface for Java code to query the class hierarchy.)
1258
1259 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1260 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1261
1262 class java_lang_invoke_ResolvedMethodName : AllStatic {
1263 friend class JavaClasses;
1264
1265 static int _vmtarget_offset;
1266 static int _vmholder_offset;
1267
1268 static void compute_offsets();
1269 public:
1270 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1271
1272 static int vmtarget_offset() { CHECK_INIT(_vmtarget_offset); }
1273
1274 static Method* vmtarget(oop resolved_method);
1275 static void set_vmtarget(oop resolved_method, Method* method);
1276
1277 static void set_vmholder(oop resolved_method, oop holder);
1278
1279 // find or create resolved member name
1280 static oop find_resolved_method(const methodHandle& m, TRAPS);
1281
1282 static bool is_instance(oop resolved_method);
1283 };
1284
1285
1286 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1287 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1288
1289
1290 class java_lang_invoke_MemberName: AllStatic {
1291 friend class JavaClasses;
1292
1293 private:
1294 // From java.lang.invoke.MemberName:
1295 // private Class<?> clazz; // class in which the method is defined
1296 // private String name; // may be null if not yet materialized
1297 // private Object type; // may be null if not yet materialized
1298 // private int flags; // modifier bits; see reflect.Modifier
1299 // private ResolvedMethodName method; // holds VM-specific target value
1300 // private intptr_t vmindex; // member index within class or interface
1301 static int _clazz_offset;
1302 static int _name_offset;
1303 static int _type_offset;
1304 static int _flags_offset;
1305 static int _method_offset;
1306 static int _vmindex_offset;
1307
1308 static void compute_offsets();
1309
1310 public:
1311 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1312 // Accessors
1313 static oop clazz(oop mname);
1314 static void set_clazz(oop mname, oop clazz);
1315
1316 static oop type(oop mname);
1317 static void set_type(oop mname, oop type);
1318
1319 static oop name(oop mname);
1320 static void set_name(oop mname, oop name);
1321
1322 static int flags(oop mname);
1323 static void set_flags(oop mname, int flags);
1324
1325 // Link through ResolvedMethodName field to get Method*
1326 static Method* vmtarget(oop mname);
1327 static void set_method(oop mname, oop method);
1328
1329 static intptr_t vmindex(oop mname);
1330 static void set_vmindex(oop mname, intptr_t index);
1331
1332 // Testers
1333 static bool is_subclass(Klass* klass) {
1334 return klass->is_subclass_of(vmClasses::MemberName_klass());
1335 }
1336 static bool is_instance(oop obj);
1337
1338 static bool is_method(oop obj);
1339
1340 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1341 enum {
1342 MN_IS_METHOD = 0x00010000, // method (not constructor)
1343 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1344 MN_IS_FIELD = 0x00040000, // field
1345 MN_IS_TYPE = 0x00080000, // nested type
1346 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1347 MN_TRUSTED_FINAL = 0x00200000, // trusted final field
1348 MN_HIDDEN_MEMBER = 0x00400000, // @Hidden annotation detected
1349 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1350 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1351 MN_NESTMATE_CLASS = 0x00000001,
1352 MN_HIDDEN_CLASS = 0x00000002,
1353 MN_STRONG_LOADER_LINK = 0x00000004,
1354 MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1355 // Lookup modes
1356 MN_MODULE_MODE = 0x00000010,
1357 MN_UNCONDITIONAL_MODE = 0x00000020,
1358 MN_TRUSTED_MODE = -1
1359 };
1360
1361 // Accessors for code generation:
1362 static int clazz_offset() { CHECK_INIT(_clazz_offset); }
1363 static int type_offset() { CHECK_INIT(_type_offset); }
1364 static int flags_offset() { CHECK_INIT(_flags_offset); }
1365 static int method_offset() { CHECK_INIT(_method_offset); }
1366 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1367 };
1368
1369
1370 // Interface to java.lang.invoke.MethodType objects
1371
1372 class java_lang_invoke_MethodType: AllStatic {
1373 friend class JavaClasses;
1374
1375 private:
1376 static int _rtype_offset;
1377 static int _ptypes_offset;
1378
1379 static void compute_offsets();
1380
1381 public:
1382 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1383 // Accessors
1384 static oop rtype(oop mt);
1385 static objArrayOop ptypes(oop mt);
1386
1387 static oop ptype(oop mt, int index);
1388 static int ptype_count(oop mt);
1389
1390 static int ptype_slot_count(oop mt); // extra counts for long/double
1391 static int rtype_slot_count(oop mt); // extra counts for long/double
1392
1393 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1394 static void print_signature(oop mt, outputStream* st);
1395
1396 static bool is_instance(oop obj);
1397
1398 static bool equals(oop mt1, oop mt2);
1399
1400 // Accessors for code generation:
1401 static int rtype_offset() { CHECK_INIT(_rtype_offset); }
1402 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); }
1403 };
1404
1405
1406 // Interface to java.lang.invoke.CallSite objects
1407
1408 class java_lang_invoke_CallSite: AllStatic {
1409 friend class JavaClasses;
1410
1411 private:
1412 static int _target_offset;
1413 static int _context_offset;
1414
1415 static void compute_offsets();
1416
1417 public:
1418 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1419 // Accessors
1420 static oop target( oop site);
1421 static void set_target( oop site, oop target);
1422 static void set_target_volatile( oop site, oop target);
1423
1424 static oop context_no_keepalive(oop site);
1425
1426 // Testers
1427 static bool is_subclass(Klass* klass) {
1428 return klass->is_subclass_of(vmClasses::CallSite_klass());
1429 }
1430 static bool is_instance(oop obj);
1431
1432 // Accessors for code generation:
1433 static int target_offset() { CHECK_INIT(_target_offset); }
1434 static int context_offset() { CHECK_INIT(_context_offset); }
1435 };
1436
1437 // Interface to java.lang.invoke.ConstantCallSite objects
1438
1439 class java_lang_invoke_ConstantCallSite: AllStatic {
1440 friend class JavaClasses;
1441
1442 private:
1443 static int _is_frozen_offset;
1444
1445 static void compute_offsets();
1446
1447 public:
1448 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1449 // Accessors
1450 static jboolean is_frozen(oop site);
1451
1452 // Testers
1453 static bool is_subclass(Klass* klass) {
1454 return klass->is_subclass_of(vmClasses::ConstantCallSite_klass());
1455 }
1456 static bool is_instance(oop obj);
1457 };
1458
1459 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1460
1461 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1462 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1463 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1464
1465 class DependencyContext;
1466
1467 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1468 friend class JavaClasses;
1469
1470 private:
1471 static int _vmdependencies_offset;
1472 static int _last_cleanup_offset;
1473
1474 static void compute_offsets();
1475
1476 public:
1477 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1478 // Accessors
1479 static DependencyContext vmdependencies(oop context);
1480
1481 // Testers
1482 static bool is_subclass(Klass* klass) {
1483 return klass->is_subclass_of(vmClasses::Context_klass());
1484 }
1485 static bool is_instance(oop obj);
1486 };
1487
1488 // Interface to java.security.AccessControlContext objects
1489
1490 class java_security_AccessControlContext: AllStatic {
1491 private:
1492 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1493 // so we compute the offsets at startup rather than hard-wiring them.
1494 static int _context_offset;
1495 static int _privilegedContext_offset;
1496 static int _isPrivileged_offset;
1497 static int _isAuthorized_offset;
1498
1499 static void compute_offsets();
1500 public:
1501 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1502 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1503
1504 // Debugging/initialization
1505 friend class JavaClasses;
1506 };
1507
1508
1509 // Interface to java.lang.ClassLoader objects
1510
1511 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1512 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1513
1514 class java_lang_ClassLoader : AllStatic {
1515 private:
1516 static int _loader_data_offset;
1517 static int _parent_offset;
1518 static int _parallelCapable_offset;
1519 static int _name_offset;
1520 static int _nameAndId_offset;
1521 static int _unnamedModule_offset;
1522
1523 static void compute_offsets();
1524
1525 public:
1526 // Support for CDS
1527 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1528 static int loader_data_offset() { return _loader_data_offset; }
1529
1530 static ClassLoaderData* loader_data_acquire(oop loader);
1531 static ClassLoaderData* loader_data(oop loader);
1532 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1533
1534 static oop parent(oop loader);
1535 static oop parent_no_keepalive(oop loader);
1536 static oop name(oop loader);
1537 static oop nameAndId(oop loader);
1538 static bool isAncestor(oop loader, oop cl);
1539
1540 // Support for parallelCapable field
1541 static bool parallelCapable(oop the_class_mirror);
1542
1543 static bool is_trusted_loader(oop loader);
1544
1545 // Testers
1546 static bool is_subclass(Klass* klass) {
1547 return klass->is_subclass_of(vmClasses::ClassLoader_klass());
1548 }
1549 static bool is_instance(oop obj);
1550
1551 static oop unnamedModule(oop loader);
1552
1553 // Debugging
1554 friend class JavaClasses;
1555 };
1556
1557
1558 // Interface to java.lang.System objects
1559
1560 class java_lang_System : AllStatic {
1561 private:
1562 static int _static_in_offset;
1563 static int _static_out_offset;
1564 static int _static_err_offset;
1565 static int _static_security_offset;
1566 static int _static_allow_security_offset;
1567 static int _static_never_offset;
1568
1569 public:
1570 static int in_offset() { CHECK_INIT(_static_in_offset); }
1571 static int out_offset() { CHECK_INIT(_static_out_offset); }
1572 static int err_offset() { CHECK_INIT(_static_err_offset); }
1573 static bool allow_security_manager();
1574 static bool has_security_manager();
1575
1576 static void compute_offsets();
1577 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1578
1579 // Debugging
1580 friend class JavaClasses;
1581 };
1582
1583
1584 // Interface to java.lang.StackTraceElement objects
1585
1586 class java_lang_StackTraceElement: AllStatic {
1587 private:
1588 static int _declaringClassObject_offset;
1589 static int _classLoaderName_offset;
1590 static int _moduleName_offset;
1591 static int _moduleVersion_offset;
1592 static int _declaringClass_offset;
1593 static int _methodName_offset;
1594 static int _fileName_offset;
1595 static int _lineNumber_offset;
1596
1597 // Setters
1598 static void set_classLoaderName(oop element, oop value);
1599 static void set_moduleName(oop element, oop value);
1600 static void set_moduleVersion(oop element, oop value);
1601 static void set_declaringClass(oop element, oop value);
1602 static void set_methodName(oop element, oop value);
1603 static void set_fileName(oop element, oop value);
1604 static void set_lineNumber(oop element, int value);
1605 static void set_declaringClassObject(oop element, oop value);
1606
1607 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1608 const methodHandle& method, int bci,
1609 Symbol*& source, oop& source_file, int& line_number, TRAPS);
1610
1611 public:
1612 // Create an instance of StackTraceElement
1613 static oop create(const methodHandle& method, int bci, TRAPS);
1614
1615 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1616 int version, int bci, Symbol* name, TRAPS);
1617
1618 static void compute_offsets();
1619 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1620
1621 #if INCLUDE_JVMCI
1622 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1623 #endif
1624
1625 // Debugging
1626 friend class JavaClasses;
1627 };
1628
1629
1630 class Backtrace: AllStatic {
1631 public:
1632 // Helper backtrace functions to store bci|version together.
1633 static int merge_bci_and_version(int bci, int version);
1634 static int merge_mid_and_cpref(int mid, int cpref);
1635 static int bci_at(unsigned int merged);
1636 static int version_at(unsigned int merged);
1637 static int mid_at(unsigned int merged);
1638 static int cpref_at(unsigned int merged);
1639 static int get_line_number(Method* method, int bci);
1640 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1641
1642 // Debugging
1643 friend class JavaClasses;
1644 };
1645
1646 class java_lang_ClassFrameInfo: AllStatic {
1647 private:
1648 static int _classOrMemberName_offset;
1649 static int _flags_offset;
1650
1651 public:
1652 static oop classOrMemberName(oop info);
1653 static int flags(oop info);
1654
1655 // Setters
1656 static void init_class(Handle stackFrame, const methodHandle& m);
1657 static void init_method(Handle stackFrame, const methodHandle& m, TRAPS);
1658
1659 static void compute_offsets();
1660 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1661
1662 // Debugging
1663 friend class JavaClasses;
1664 };
1665
1666 // Interface to java.lang.StackFrameInfo objects
1667
1668 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1669 macro(java_lang_StackFrameInfo, version, short_signature, false)
1670
1671 class java_lang_StackFrameInfo: AllStatic {
1672 private:
1673 static int _type_offset;
1674 static int _name_offset;
1675 static int _bci_offset;
1676 static int _version_offset;
1677 static int _contScope_offset;
1678
1679 public:
1680 // Getters
1681 static oop name(oop info);
1682 static oop type(oop info);
1683 static Method* get_method(oop info);
1684
1685 // Setters
1686 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS);
1687 static void set_name(oop info, oop value);
1688 static void set_type(oop info, oop value);
1689 static void set_bci(oop info, int value);
1690
1691 static void set_version(oop info, short value);
1692 static void set_contScope(oop info, oop value);
1693
1694 static void compute_offsets();
1695 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1696
1697 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1698
1699 // Debugging
1700 friend class JavaClasses;
1701 };
1702
1703 class java_lang_LiveStackFrameInfo: AllStatic {
1704 private:
1705 static int _monitors_offset;
1706 static int _locals_offset;
1707 static int _operands_offset;
1708 static int _mode_offset;
1709
1710 public:
1711 static void set_monitors(oop info, oop value);
1712 static void set_locals(oop info, oop value);
1713 static void set_operands(oop info, oop value);
1714 static void set_mode(oop info, int value);
1715
1716 static void compute_offsets();
1717 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1718
1719 // Debugging
1720 friend class JavaClasses;
1721 };
1722
1723 // Interface to java.lang.reflect.RecordComponent objects
1724
1725 class java_lang_reflect_RecordComponent: AllStatic {
1726 private:
1727 static int _clazz_offset;
1728 static int _name_offset;
1729 static int _type_offset;
1730 static int _accessor_offset;
1731 static int _signature_offset;
1732 static int _annotations_offset;
1733 static int _typeAnnotations_offset;
1734
1735 // Setters
1736 static void set_clazz(oop element, oop value);
1737 static void set_name(oop element, oop value);
1738 static void set_type(oop element, oop value);
1739 static void set_accessor(oop element, oop value);
1740 static void set_signature(oop element, oop value);
1741 static void set_annotations(oop element, oop value);
1742 static void set_typeAnnotations(oop element, oop value);
1743
1744 public:
1745 // Create an instance of RecordComponent
1746 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1747
1748 static void compute_offsets();
1749 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1750
1751 // Debugging
1752 friend class JavaClasses;
1753 };
1754
1755
1756 // Interface to java.lang.AssertionStatusDirectives objects
1757
1758 class java_lang_AssertionStatusDirectives: AllStatic {
1759 private:
1760 static int _classes_offset;
1761 static int _classEnabled_offset;
1762 static int _packages_offset;
1763 static int _packageEnabled_offset;
1764 static int _deflt_offset;
1765
1766 public:
1767 // Setters
1768 static void set_classes(oop obj, oop val);
1769 static void set_classEnabled(oop obj, oop val);
1770 static void set_packages(oop obj, oop val);
1771 static void set_packageEnabled(oop obj, oop val);
1772 static void set_deflt(oop obj, bool val);
1773
1774 static void compute_offsets();
1775 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1776
1777 // Debugging
1778 friend class JavaClasses;
1779 };
1780
1781
1782 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1783 private:
1784 static int _owner_offset;
1785 public:
1786 static void compute_offsets();
1787 static oop get_owner_threadObj(oop obj);
1788 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1789 };
1790
1791 // Interface to jdk.internal.misc.UnsafeConsants
1792
1793 class jdk_internal_misc_UnsafeConstants : AllStatic {
1794 public:
1795 static void set_unsafe_constants();
1796 static void compute_offsets() { }
1797 static void serialize_offsets(SerializeClosure* f) { }
1798 };
1799
1800 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects
1801
1802 class vector_VectorPayload : AllStatic {
1803 private:
1804 static int _payload_offset;
1805 public:
1806 static void set_payload(oop o, oop val);
1807
1808 static void compute_offsets();
1809 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1810
1811 // Testers
1812 static bool is_subclass(Klass* klass) {
1813 return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass());
1814 }
1815 static bool is_instance(oop obj);
1816 };
1817
1818 class java_lang_Integer : AllStatic {
1819 public:
1820 static jint value(oop obj);
1821 };
1822
1823 class java_lang_Long : AllStatic {
1824 public:
1825 static jlong value(oop obj);
1826 };
1827
1828 class java_lang_Character : AllStatic {
1829 public:
1830 static jchar value(oop obj);
1831 };
1832
1833 class java_lang_Short : AllStatic {
1834 public:
1835 static jshort value(oop obj);
1836 };
1837
1838 class java_lang_Byte : AllStatic {
1839 public:
1840 static jbyte value(oop obj);
1841 };
1842
1843 class java_lang_Boolean : AllStatic {
1844 private:
1845 static int _static_TRUE_offset;
1846 static int _static_FALSE_offset;
1847 public:
1848 static Symbol* symbol();
1849 static void compute_offsets(InstanceKlass* k);
1850 static oop get_TRUE(InstanceKlass *k);
1851 static oop get_FALSE(InstanceKlass *k);
1852 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1853 static jboolean value(oop obj);
1854 };
1855
1856 class java_lang_Integer_IntegerCache : AllStatic {
1857 private:
1858 static int _static_cache_offset;
1859 public:
1860 static Symbol* symbol();
1861 static void compute_offsets(InstanceKlass* k);
1862 static objArrayOop cache(InstanceKlass *k);
1863 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1864 };
1865
1866 class java_lang_Long_LongCache : AllStatic {
1867 private:
1868 static int _static_cache_offset;
1869 public:
1870 static Symbol* symbol();
1871 static void compute_offsets(InstanceKlass* k);
1872 static objArrayOop cache(InstanceKlass *k);
1873 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1874 };
1875
1876 class java_lang_Character_CharacterCache : AllStatic {
1877 private:
1878 static int _static_cache_offset;
1879 public:
1880 static Symbol* symbol();
1881 static void compute_offsets(InstanceKlass* k);
1882 static objArrayOop cache(InstanceKlass *k);
1883 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1884 };
1885
1886 class java_lang_Short_ShortCache : AllStatic {
1887 private:
1888 static int _static_cache_offset;
1889 public:
1890 static Symbol* symbol();
1891 static void compute_offsets(InstanceKlass* k);
1892 static objArrayOop cache(InstanceKlass *k);
1893 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1894 };
1895
1896 class java_lang_Byte_ByteCache : AllStatic {
1897 private:
1898 static int _static_cache_offset;
1899 public:
1900 static Symbol* symbol();
1901 static void compute_offsets(InstanceKlass* k);
1902 static objArrayOop cache(InstanceKlass *k);
1903 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1904 };
1905
1906
1907 // Interface to java.lang.InternalError objects
1908
1909 #define INTERNALERROR_INJECTED_FIELDS(macro) \
1910 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1911
1912 class java_lang_InternalError : AllStatic {
1913 private:
1914 static int _during_unsafe_access_offset;
1915 public:
1916 static jboolean during_unsafe_access(oop internal_error);
1917 static void set_during_unsafe_access(oop internal_error);
1918 static void compute_offsets();
1919 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1920 };
1921
1922 // Use to declare fields that need to be injected into Java classes
1923 // for the JVM to use. The name_index and signature_index are
1924 // declared in vmSymbols. The may_be_java flag is used to declare
1925 // fields that might already exist in Java but should be injected if
1926 // they don't. Otherwise the field is unconditionally injected and
1927 // the JVM uses the injected one. This is to ensure that name
1928 // collisions don't occur. In general may_be_java should be false
1929 // unless there's a good reason.
1930
1931 class InjectedField {
1932 public:
1933 const vmClassID klass_id;
1934 const vmSymbolID name_index;
1935 const vmSymbolID signature_index;
1936 const bool may_be_java;
1937
1938
1939 Klass* klass() const { return vmClasses::klass_at(klass_id); }
1940 Symbol* name() const { return lookup_symbol(name_index); }
1941 Symbol* signature() const { return lookup_symbol(signature_index); }
1942
1943 int compute_offset();
1944
1945 // Find the Symbol for this index
1946 static Symbol* lookup_symbol(vmSymbolID symbol_index) {
1947 return Symbol::vm_symbol_at(symbol_index);
1948 }
1949 };
1950
1951
1952 // Interface to hard-coded offset checking
1953
1954 enum class InjectedFieldID : int;
1955
1956 class JavaClasses : AllStatic {
1957 private:
1958
1959 static InjectedField _injected_fields[];
1960
1961 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1962 public:
1963
1964 static int compute_injected_offset(InjectedFieldID id);
1965
1966 static void compute_offsets();
1967 static void check_offsets() PRODUCT_RETURN;
1968 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1969 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1970 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1971
1972 static void compute_offset(int &dest_offset,
1973 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
1974 bool is_static = false);
1975 static void compute_offset(int& dest_offset, InstanceKlass* ik,
1976 const char* name_string, Symbol* signature_symbol,
1977 bool is_static = false);
1978 };
1979
1980 #undef CHECK_INIT
1981
1982 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP