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/vmEnums.hpp"
36
37 class JvmtiThreadState;
38 class RecordComponent;
39 class SerializeClosure;
40
41 #define CHECK_INIT(offset) assert(offset != 0, "should be initialized"); return offset;
42
43 // Interface to java.lang.Object objects
44
45 class java_lang_Object : AllStatic {
46 public:
47 static void register_natives(TRAPS);
48 };
49
50 // Interface to java.lang.String objects
51
52 // The flags field is a collection of bits representing boolean values used
53 // internally by the VM.
54 #define STRING_INJECTED_FIELDS(macro) \
55 macro(java_lang_String, flags, byte_signature, false)
56
57 class java_lang_String : AllStatic {
58 private:
59 static int _value_offset;
60 static int _hash_offset;
61 static int _hashIsZero_offset;
62 static int _coder_offset;
63 static int _flags_offset;
64
65 static bool _initialized;
66
67 static Handle basic_create(int length, bool byte_arr, TRAPS);
68
69 static inline void set_coder(oop string, jbyte coder);
70
71 // Bitmasks for values in the injected flags field.
72 static const uint8_t _deduplication_forbidden_mask = 1 << 0;
73 static const uint8_t _deduplication_requested_mask = 1 << 1;
74
75 static int flags_offset() { CHECK_INIT(_flags_offset); }
76 // Return the address of the injected flags field.
77 static inline uint8_t* flags_addr(oop java_string);
78 // Test whether the designated bit of the injected flags field is set.
79 static inline bool is_flag_set(oop java_string, uint8_t flag_mask);
80 // Atomically test and set the designated bit of the injected flags field,
81 // returning true if the bit was already set.
82 static bool test_and_set_flag(oop java_string, uint8_t flag_mask);
83
84 static inline unsigned int hash_code_impl(oop java_string, bool update);
85
86 public:
87
88 // Coders
89 enum Coder {
90 CODER_LATIN1 = 0,
91 CODER_UTF16 = 1
92 };
93
94 static void compute_offsets();
95 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
96
97 // Instance creation
98 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
99 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
100 static Handle create_from_str(const char* utf8_str, TRAPS);
101 static oop create_oop_from_str(const char* utf8_str, TRAPS);
102 static Handle create_from_symbol(Symbol* symbol, TRAPS);
103 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
104
105 static void set_compact_strings(bool value);
106
107 static int value_offset() { CHECK_INIT(_value_offset); }
108 static int coder_offset() { CHECK_INIT(_coder_offset); }
109
110 static inline void set_value(oop string, typeArrayOop buffer);
111
112 // Set the deduplication_forbidden flag true. This flag is sticky; once
113 // set it never gets cleared. This is set when a String is interned in
114 // the StringTable, to prevent string deduplication from changing the
115 // String's value array.
116 static inline void set_deduplication_forbidden(oop java_string);
117
118 // Test and set the deduplication_requested flag. Returns the old value
119 // of the flag. This flag is sticky; once set it never gets cleared.
120 // Some GCs may use this flag when deciding whether to request
121 // deduplication of a String, to avoid multiple requests for the same
122 // object.
123 static inline bool test_and_set_deduplication_requested(oop java_string);
124
125 // Accessors
126 static inline typeArrayOop value(oop java_string);
127 static inline typeArrayOop value_no_keepalive(oop java_string);
128 static inline bool hash_is_set(oop string);
129 static inline bool is_latin1(oop java_string);
130 static inline bool deduplication_forbidden(oop java_string);
131 static inline bool deduplication_requested(oop java_string);
132 static inline int length(oop java_string);
133 static inline int length(oop java_string, typeArrayOop string_value);
134 static size_t utf8_length(oop java_string);
135 static size_t utf8_length(oop java_string, typeArrayOop string_value);
136 // Legacy variants that truncate the length if needed
137 static int utf8_length_as_int(oop java_string);
138 static int utf8_length_as_int(oop java_string, typeArrayOop string_value);
139
140 // String converters
141 static char* as_utf8_string(oop java_string);
142 // `length` is set to the length of the utf8 sequence.
143 static char* as_utf8_string(oop java_string, size_t& length);
144 static char* as_utf8_string_full(oop java_string, char* buf, size_t buflen, size_t& length);
145 static char* as_utf8_string(oop java_string, char* buf, size_t buflen);
146 static char* as_utf8_string(oop java_string, int start, int len);
147 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, size_t buflen);
148 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, size_t buflen);
149 static char* as_platform_dependent_str(Handle java_string, TRAPS);
150 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
151 static jchar* as_unicode_string_or_null(oop java_string, int& length);
152 // produce an ascii string with all other values quoted using \u####
153 static char* as_quoted_ascii(oop java_string);
154
155 // Compute the hash value for a java.lang.String object which would
156 // contain the characters passed in.
157 //
158 // As the hash value used by the String object itself, in
159 // String.hashCode(). This value is normally calculated in Java code
160 // in the String.hashCode method(), but is precomputed for String
161 // objects in the shared archive file.
162 // hash P(31) from Kernighan & Ritchie
163 //
164 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
165 static unsigned int hash_code(const jchar* s, int len) {
166 unsigned int h = 0;
167 while (len-- > 0) {
168 h = 31*h + (unsigned int) *s;
169 s++;
170 }
171 return h;
172 }
173
174 static unsigned int hash_code(const jbyte* s, int len) {
175 unsigned int h = 0;
176 while (len-- > 0) {
177 h = 31*h + (((unsigned int) *s) & 0xFF);
178 s++;
179 }
180 return h;
181 }
182
183 static unsigned int hash_code(oop java_string);
184 static unsigned int hash_code_noupdate(oop java_string);
185
186 static bool equals(oop java_string, const jchar* chars, int len);
187 static bool equals(oop str1, oop str2);
188 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
189
190 // Conversion between '.' and '/' formats, and allocate a String from the result.
191 static Handle externalize_classname(Symbol* java_name, TRAPS);
192
193 // Conversion
194 static Symbol* as_symbol(oop java_string);
195 static Symbol* as_symbol_or_null(oop java_string);
196
197 // Tester
198 static inline bool is_instance(oop obj);
199
200 // Debugging
201 static void print(oop java_string, outputStream* st, int max_length = MaxStringPrintSize);
202 friend class JavaClasses;
203 friend class StringTable;
204 };
205
206
207 // Interface to java.lang.Class objects
208
209 #define CLASS_INJECTED_FIELDS(macro) \
210 macro(java_lang_Class, klass, intptr_signature, false) \
211 macro(java_lang_Class, array_klass, intptr_signature, false) \
212 macro(java_lang_Class, oop_size, int_signature, false) \
213 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
214 macro(java_lang_Class, protection_domain, object_signature, false) \
215 macro(java_lang_Class, source_file, object_signature, false) \
216 macro(java_lang_Class, init_lock, object_signature, false)
217
218 class java_lang_Class : AllStatic {
219 friend class VMStructs;
220 friend class JVMCIVMStructs;
221
222 private:
223
224 // The fake offsets are added by the class loader when java.lang.Class is loaded
225
226 static int _klass_offset;
227 static int _array_klass_offset;
228
229 static int _oop_size_offset;
230 static int _static_oop_field_count_offset;
231
232 static int _protection_domain_offset;
233 static int _init_lock_offset;
234 static int _signers_offset;
235 static int _class_loader_offset;
236 static int _module_offset;
237 static int _component_mirror_offset;
238 static int _name_offset;
239 static int _source_file_offset;
240 static int _classData_offset;
241 static int _classRedefinedCount_offset;
242 static int _reflectionData_offset;
243
244 static bool _offsets_computed;
245
246 static GrowableArray<Klass*>* _fixup_mirror_list;
247 static GrowableArray<Klass*>* _fixup_module_field_list;
248
249 static void set_init_lock(oop java_class, oop init_lock);
250 static void set_protection_domain(oop java_class, oop protection_domain);
251 static void set_class_loader(oop java_class, oop class_loader);
252 static void set_component_mirror(oop java_class, oop comp_mirror);
253 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
254 Handle classData, TRAPS);
255 static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
256 public:
257 static void allocate_fixup_lists();
258 static void compute_offsets();
259
260 // Instance creation
261 static void allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
262 Handle& mirror, Handle& comp_mirror, TRAPS); // returns mirror and comp_mirror
263 static void create_mirror(Klass* k, Handle class_loader, Handle module,
264 Handle protection_domain, Handle classData, TRAPS);
265 static void fixup_mirror(Klass* k, TRAPS);
266 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
267
268 // Archiving
269 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
270 static void create_scratch_mirror(Klass* k, Handle protection_domain, TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
271 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
272 Handle protection_domain,
273 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
274
275 static void fixup_module_field(Klass* k, Handle module);
276
277 // Conversion
278 static Klass* as_Klass(oop java_class);
279 static void set_klass(oop java_class, Klass* klass);
280 static BasicType as_BasicType(oop java_class, Klass** reference_klass = nullptr);
281 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
282 static void print_signature(oop java_class, outputStream *st);
283 static const char* as_external_name(oop java_class);
284 // Testing
285 static bool is_instance(oop obj);
286
287 static bool is_primitive(oop java_class);
288 static BasicType primitive_type(oop java_class);
289 static oop primitive_mirror(BasicType t);
290 // JVM_NewArray support
291 static Klass* array_klass_acquire(oop java_class);
292 static void release_set_array_klass(oop java_class, Klass* klass);
293 // compiler support for class operations
294 static int klass_offset() { CHECK_INIT(_klass_offset); }
295 static int array_klass_offset() { CHECK_INIT(_array_klass_offset); }
296 // Support for classRedefinedCount field
297 static int classRedefinedCount(oop the_class_mirror);
298 static void set_classRedefinedCount(oop the_class_mirror, int value);
299
300 // Support for embedded per-class oops
301 static oop protection_domain(oop java_class);
302 static oop init_lock(oop java_class);
303 static void clear_init_lock(oop java_class) {
304 set_init_lock(java_class, nullptr);
305 }
306 static oop component_mirror(oop java_class);
307 static objArrayOop signers(oop java_class);
308 static oop class_data(oop java_class);
309 static void set_class_data(oop java_class, oop classData);
310
311 static oop reflection_data(oop java_class);
312 static void set_reflection_data(oop java_class, oop reflection_data);
313 static bool has_reflection_data(oop java_class);
314
315 static int component_mirror_offset() { return _component_mirror_offset; }
316
317 static oop class_loader(oop java_class);
318 static void set_module(oop java_class, oop module);
319 static oop module(oop java_class);
320
321 static oop name(Handle java_class, TRAPS);
322
323 static oop source_file(oop java_class);
324 static void set_source_file(oop java_class, oop source_file);
325
326 static size_t oop_size(oop java_class);
327 static void set_oop_size(HeapWord* java_class, size_t size);
328 static int static_oop_field_count(oop java_class);
329 static void set_static_oop_field_count(oop java_class, int size);
330
331 static GrowableArray<Klass*>* fixup_mirror_list() {
332 return _fixup_mirror_list;
333 }
334 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
335 _fixup_mirror_list = v;
336 }
337
338 static GrowableArray<Klass*>* fixup_module_field_list() {
339 return _fixup_module_field_list;
340 }
341 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
342 _fixup_module_field_list = v;
343 }
344
345 // Debugging
346 friend class JavaClasses;
347 };
348
349 // Interface to java.lang.Thread objects
350
351 #define THREAD_INJECTED_FIELDS(macro) \
352 macro(java_lang_Thread, jvmti_thread_state, intptr_signature, false) \
353 macro(java_lang_Thread, jvmti_VTMS_transition_disable_count, int_signature, false) \
354 macro(java_lang_Thread, jvmti_is_in_VTMS_transition, bool_signature, false) \
355 JFR_ONLY(macro(java_lang_Thread, jfr_epoch, short_signature, false))
356
357 class java_lang_Thread : AllStatic {
358 friend class java_lang_VirtualThread;
359 friend class JVMCIVMStructs;
360 private:
361 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
362 // so we compute the offsets at startup rather than hard-wiring them.
363 static int _holder_offset;
364 static int _name_offset;
365 static int _contextClassLoader_offset;
366 static int _inheritedAccessControlContext_offset;
367 static int _eetop_offset;
368 static int _jvmti_thread_state_offset;
369 static int _jvmti_VTMS_transition_disable_count_offset;
370 static int _jvmti_is_in_VTMS_transition_offset;
371 static int _interrupted_offset;
372 static int _interruptLock_offset;
373 static int _tid_offset;
374 static int _continuation_offset;
375 static int _park_blocker_offset;
376 static int _scopedValueBindings_offset;
377 JFR_ONLY(static int _jfr_epoch_offset;)
378
379 static void compute_offsets();
380
381 public:
382 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
383
384 // Returns the JavaThread associated with the thread obj
385 static JavaThread* thread(oop java_thread);
386 static JavaThread* thread_acquire(oop java_thread);
387 // Set JavaThread for instance
388 static void set_thread(oop java_thread, JavaThread* thread);
389 static void release_set_thread(oop java_thread, JavaThread* thread);
390 // FieldHolder
391 static oop holder(oop java_thread);
392 // interruptLock
393 static oop interrupt_lock(oop java_thread);
394 // Interrupted status
395 static bool interrupted(oop java_thread);
396 static void set_interrupted(oop java_thread, bool val);
397 // Name
398 static oop name(oop java_thread);
399 static void set_name(oop java_thread, oop name);
400 // Priority
401 static ThreadPriority priority(oop java_thread);
402 static void set_priority(oop java_thread, ThreadPriority priority);
403 // Thread group
404 static oop threadGroup(oop java_thread);
405 // Alive (NOTE: this is not really a field, but provides the correct
406 // definition without doing a Java call)
407 static bool is_alive(oop java_thread);
408 // Daemon
409 static bool is_daemon(oop java_thread);
410 static void set_daemon(oop java_thread);
411 // Context ClassLoader
412 static oop context_class_loader(oop java_thread);
413 // Control context
414 static oop inherited_access_control_context(oop java_thread);
415 // Stack size hint
416 static jlong stackSize(oop java_thread);
417 // Thread ID
418 static int64_t thread_id(oop java_thread);
419 static ByteSize thread_id_offset();
420 // Continuation
421 static inline oop continuation(oop java_thread);
422
423 static JvmtiThreadState* jvmti_thread_state(oop java_thread);
424 static void set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state);
425 static int VTMS_transition_disable_count(oop java_thread);
426 static void inc_VTMS_transition_disable_count(oop java_thread);
427 static void dec_VTMS_transition_disable_count(oop java_thread);
428 static bool is_in_VTMS_transition(oop java_thread);
429 static void set_is_in_VTMS_transition(oop java_thread, bool val);
430 static int is_in_VTMS_transition_offset();
431
432 // Clear all scoped value bindings on error
433 static void clear_scopedValueBindings(oop java_thread);
434
435 // Blocker object responsible for thread parking
436 static oop park_blocker(oop java_thread);
437
438 // Write thread status info to threadStatus field of java.lang.Thread.
439 static void set_thread_status(oop java_thread_oop, JavaThreadStatus status);
440 // Read thread status info from threadStatus field of java.lang.Thread.
441 static JavaThreadStatus get_thread_status(oop java_thread_oop);
442
443 static const char* thread_status_name(oop java_thread_oop);
444
445 // Fill in current stack trace, can cause GC
446 static oop async_get_stack_trace(oop java_thread, TRAPS);
447
448 JFR_ONLY(static u2 jfr_epoch(oop java_thread);)
449 JFR_ONLY(static void set_jfr_epoch(oop java_thread, u2 epoch);)
450 JFR_ONLY(static int jfr_epoch_offset() { CHECK_INIT(_jfr_epoch_offset); })
451
452 // Debugging
453 friend class JavaClasses;
454 };
455
456 // Interface to java.lang.Thread$FieldHolder objects
457
458 class java_lang_Thread_FieldHolder : AllStatic {
459 private:
460 static int _group_offset;
461 static int _priority_offset;
462 static int _stackSize_offset;
463 static int _daemon_offset;
464 static int _thread_status_offset;
465
466 static void compute_offsets();
467
468 public:
469 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
470
471 static oop threadGroup(oop holder);
472
473 static ThreadPriority priority(oop holder);
474 static void set_priority(oop holder, ThreadPriority priority);
475
476 static jlong stackSize(oop holder);
477
478 static bool is_daemon(oop holder);
479 static void set_daemon(oop holder, bool val);
480
481 static void set_thread_status(oop holder, JavaThreadStatus status);
482 static JavaThreadStatus get_thread_status(oop holder);
483
484 friend class JavaClasses;
485 };
486
487 // Interface to java.lang.Thread$Constants objects
488
489 class java_lang_Thread_Constants : AllStatic {
490 private:
491 static int _static_VTHREAD_GROUP_offset;
492 static int _static_NOT_SUPPORTED_CLASSLOADER_offset;
493
494 static void compute_offsets();
495 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
496
497 public:
498 static oop get_VTHREAD_GROUP();
499
500 friend class JavaClasses;
501 };
502
503 // Interface to java.lang.ThreadGroup objects
504
505 class java_lang_ThreadGroup : AllStatic {
506 private:
507 static int _parent_offset;
508 static int _name_offset;
509 static int _maxPriority_offset;
510 static int _daemon_offset;
511
512 static void compute_offsets();
513 public:
514 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
515
516 // parent ThreadGroup
517 static oop parent(oop java_thread_group);
518 // name
519 static const char* name(oop java_thread_group);
520 // maxPriority in group
521 static ThreadPriority maxPriority(oop java_thread_group);
522 // Daemon
523 static bool is_daemon(oop java_thread_group);
524
525 // Debugging
526 friend class JavaClasses;
527 };
528
529
530 // Interface to java.lang.VirtualThread objects
531
532 class java_lang_VirtualThread : AllStatic {
533 private:
534 static int static_vthread_scope_offset;
535 static int _carrierThread_offset;
536 static int _continuation_offset;
537 static int _state_offset;
538 JFR_ONLY(static int _jfr_epoch_offset;)
539 public:
540 enum {
541 NEW = 0,
542 STARTED = 1,
543 RUNNING = 2,
544 PARKING = 3,
545 PARKED = 4,
546 PINNED = 5,
547 TIMED_PARKING = 6,
548 TIMED_PARKED = 7,
549 TIMED_PINNED = 8,
550 UNPARKED = 9,
551 YIELDING = 10,
552 YIELDED = 11,
553 TERMINATED = 99,
554
555 // additional state bits
556 SUSPENDED = 1 << 8, // suspended when unmounted
557 };
558
559 static void compute_offsets();
560 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
561
562 // Testers
563 static bool is_subclass(Klass* klass) {
564 return klass->is_subclass_of(vmClasses::VirtualThread_klass());
565 }
566 static bool is_instance(oop obj);
567
568 static oop vthread_scope();
569 static oop carrier_thread(oop vthread);
570 static oop continuation(oop vthread);
571 static int state(oop vthread);
572 static JavaThreadStatus map_state_to_thread_status(int state);
573 };
574
575
576 // Interface to java.lang.Throwable objects
577
578 class java_lang_Throwable: AllStatic {
579 friend class BacktraceBuilder;
580 friend class BacktraceIterator;
581
582 private:
583 // Trace constants
584 enum {
585 trace_methods_offset = 0,
586 trace_bcis_offset = 1,
587 trace_mirrors_offset = 2,
588 trace_names_offset = 3,
589 trace_conts_offset = 4,
590 trace_next_offset = 5,
591 trace_hidden_offset = 6,
592 trace_size = 7,
593 trace_chunk_size = 32
594 };
595
596 static int _backtrace_offset;
597 static int _detailMessage_offset;
598 static int _stackTrace_offset;
599 static int _depth_offset;
600 static int _cause_offset;
601 static int _static_unassigned_stacktrace_offset;
602
603 // StackTrace (programmatic access, new since 1.4)
604 static void clear_stacktrace(oop throwable);
605 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
606 static void set_stacktrace(oop throwable, oop st_element_array);
607 static oop unassigned_stacktrace();
608
609 public:
610 // Backtrace
611 static oop backtrace(oop throwable);
612 static void set_backtrace(oop throwable, oop value);
613 static int depth(oop throwable);
614 static void set_depth(oop throwable, int value);
615 // Message
616 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
617 static oop message(oop throwable);
618 static const char* message_as_utf8(oop throwable);
619 static void set_message(oop throwable, oop value);
620
621 static oop cause(oop throwable);
622
623 static void print_stack_element(outputStream *st, Method* method, int bci);
624
625 static void compute_offsets();
626 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
627
628 // Allocate space for backtrace (created but stack trace not filled in)
629 static void allocate_backtrace(Handle throwable, TRAPS);
630 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
631 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
632 // Fill in current stack trace, can cause GC
633 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
634 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
635
636 // Programmatic access to stack trace
637 static void get_stack_trace_elements(int depth, Handle backtrace, objArrayHandle stack_trace, TRAPS);
638
639 // For recreating class initialization error exceptions.
640 static Handle create_initialization_error(JavaThread* current, Handle throwable);
641
642 static oop create_exception_instance(Symbol* class_name, TRAPS);
643
644 // Printing
645 static void print(oop throwable, outputStream* st);
646 static void print_stack_trace(Handle throwable, outputStream* st);
647 static void java_printStackTrace(Handle throwable, TRAPS);
648 // Debugging
649 friend class JavaClasses;
650 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
651 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
652 };
653
654
655 // Interface to java.lang.reflect.AccessibleObject objects
656
657 class java_lang_reflect_AccessibleObject: AllStatic {
658 private:
659 // Note that to reduce dependencies on the JDK we compute these
660 // offsets at run-time.
661 static int _override_offset;
662
663 static void compute_offsets();
664
665 public:
666 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
667
668 // Accessors
669 static jboolean override(oop reflect);
670 static void set_override(oop reflect, jboolean value);
671
672 // Debugging
673 friend class JavaClasses;
674 };
675
676
677 // Interface to java.lang.reflect.Method objects
678
679 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
680 private:
681 // Note that to reduce dependencies on the JDK we compute these
682 // offsets at run-time.
683 static int _clazz_offset;
684 static int _name_offset;
685 static int _returnType_offset;
686 static int _parameterTypes_offset;
687 static int _exceptionTypes_offset;
688 static int _slot_offset;
689 static int _modifiers_offset;
690 static int _signature_offset;
691 static int _annotations_offset;
692 static int _parameter_annotations_offset;
693 static int _annotation_default_offset;
694
695 static void compute_offsets();
696 public:
697 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
698
699 // Allocation
700 static Handle create(TRAPS);
701
702 // Accessors
703 static oop clazz(oop reflect);
704 static void set_clazz(oop reflect, oop value);
705
706 static void set_name(oop method, oop value);
707
708 static oop return_type(oop method);
709 static void set_return_type(oop method, oop value);
710
711 static oop parameter_types(oop method);
712 static void set_parameter_types(oop method, oop value);
713
714 static int slot(oop reflect);
715 static void set_slot(oop reflect, int value);
716
717 static void set_exception_types(oop method, oop value);
718 static void set_modifiers(oop method, int value);
719 static void set_signature(oop method, oop value);
720 static void set_annotations(oop method, oop value);
721 static void set_parameter_annotations(oop method, oop value);
722 static void set_annotation_default(oop method, oop value);
723
724 // Debugging
725 friend class JavaClasses;
726 };
727
728
729 // Interface to java.lang.reflect.Constructor objects
730
731 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
732 private:
733 // Note that to reduce dependencies on the JDK we compute these
734 // offsets at run-time.
735 static int _clazz_offset;
736 static int _parameterTypes_offset;
737 static int _exceptionTypes_offset;
738 static int _slot_offset;
739 static int _modifiers_offset;
740 static int _signature_offset;
741 static int _annotations_offset;
742 static int _parameter_annotations_offset;
743
744 static void compute_offsets();
745 public:
746 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
747
748 // Allocation
749 static Handle create(TRAPS);
750
751 // Accessors
752 static oop clazz(oop reflect);
753 static void set_clazz(oop reflect, oop value);
754
755 static oop parameter_types(oop constructor);
756 static void set_parameter_types(oop constructor, oop value);
757
758 static int slot(oop reflect);
759 static void set_slot(oop reflect, int value);
760
761 static void set_exception_types(oop constructor, oop value);
762 static void set_modifiers(oop constructor, int value);
763 static void set_signature(oop constructor, oop value);
764 static void set_annotations(oop constructor, oop value);
765 static void set_parameter_annotations(oop method, oop value);
766
767 // Debugging
768 friend class JavaClasses;
769 };
770
771
772 // Interface to java.lang.reflect.Field objects
773
774 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
775 private:
776 // Note that to reduce dependencies on the JDK we compute these
777 // offsets at run-time.
778 static int _clazz_offset;
779 static int _name_offset;
780 static int _type_offset;
781 static int _slot_offset;
782 static int _modifiers_offset;
783 static int _trusted_final_offset;
784 static int _signature_offset;
785 static int _annotations_offset;
786
787 static void compute_offsets();
788
789 public:
790 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
791
792 // Allocation
793 static Handle create(TRAPS);
794
795 // Accessors
796 static oop clazz(oop reflect);
797 static void set_clazz(oop reflect, oop value);
798
799 static oop name(oop field);
800 static void set_name(oop field, oop value);
801
802 static oop type(oop field);
803 static void set_type(oop field, oop value);
804
805 static int slot(oop reflect);
806 static void set_slot(oop reflect, int value);
807
808 static int modifiers(oop field);
809 static void set_modifiers(oop field, int value);
810
811 static void set_trusted_final(oop field);
812
813 static void set_signature(oop constructor, oop value);
814 static void set_annotations(oop constructor, oop value);
815
816 // Debugging
817 friend class JavaClasses;
818 };
819
820 class java_lang_reflect_Parameter {
821 private:
822 // Note that to reduce dependencies on the JDK we compute these
823 // offsets at run-time.
824 static int _name_offset;
825 static int _modifiers_offset;
826 static int _index_offset;
827 static int _executable_offset;
828
829 static void compute_offsets();
830
831 public:
832 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
833
834 // Allocation
835 static Handle create(TRAPS);
836
837 // Accessors
838 static oop name(oop field);
839 static void set_name(oop field, oop value);
840
841 static int index(oop reflect);
842 static void set_index(oop reflect, int value);
843
844 static int modifiers(oop reflect);
845 static void set_modifiers(oop reflect, int value);
846
847 static oop executable(oop constructor);
848 static void set_executable(oop constructor, oop value);
849
850 friend class JavaClasses;
851 };
852
853 #define MODULE_INJECTED_FIELDS(macro) \
854 macro(java_lang_Module, module_entry, intptr_signature, false)
855
856 class java_lang_Module {
857 private:
858 static int _loader_offset;
859 static int _name_offset;
860 static int _module_entry_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(Handle loader, Handle module_name, TRAPS);
869
870 // Testers
871 static bool is_instance(oop obj);
872
873 // Accessors
874 static oop loader(oop module);
875 static void set_loader(oop module, oop value);
876
877 // CDS
878 static int module_entry_offset() { return _module_entry_offset; }
879
880 static oop name(oop module);
881 static void set_name(oop module, oop value);
882
883 static ModuleEntry* module_entry(oop module);
884 static ModuleEntry* module_entry_raw(oop module);
885 static void set_module_entry(oop module, ModuleEntry* module_entry);
886
887 friend class JavaClasses;
888 };
889
890 // Interface to jdk.internal.reflect.ConstantPool objects
891 class reflect_ConstantPool {
892 private:
893 // Note that to reduce dependencies on the JDK we compute these
894 // offsets at run-time.
895 static int _oop_offset;
896
897 static void compute_offsets();
898
899 public:
900 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
901
902 // Allocation
903 static Handle create(TRAPS);
904
905 // Accessors
906 static void set_cp(oop reflect, ConstantPool* value);
907 static int oop_offset() { CHECK_INIT(_oop_offset); }
908
909 static ConstantPool* get_cp(oop reflect);
910
911 // Debugging
912 friend class JavaClasses;
913 };
914
915
916 // Interface to java.lang primitive type boxing objects:
917 // - java.lang.Boolean
918 // - java.lang.Character
919 // - java.lang.Float
920 // - java.lang.Double
921 // - java.lang.Byte
922 // - java.lang.Short
923 // - java.lang.Integer
924 // - java.lang.Long
925
926 // This could be separated out into 8 individual classes.
927
928 class java_lang_boxing_object: AllStatic {
929 private:
930 static int _value_offset;
931 static int _long_value_offset;
932
933 static void compute_offsets();
934 static oop initialize_and_allocate(BasicType type, TRAPS);
935 public:
936 // Allocation. Returns a boxed value, or null for invalid type.
937 static oop create(BasicType type, jvalue* value, TRAPS);
938 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
939 static BasicType get_value(oop box, jvalue* value);
940 static BasicType set_value(oop box, jvalue* value);
941 static BasicType basic_type(oop box);
942 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
943 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
944 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
945 static void print(BasicType type, jvalue* value, outputStream* st);
946
947 static int value_offset(BasicType type) {
948 return is_double_word_type(type) ? _long_value_offset : _value_offset;
949 }
950
951 static void serialize_offsets(SerializeClosure* f);
952
953 // Debugging
954 friend class JavaClasses;
955 };
956
957
958
959 // Interface to java.lang.ref.Reference objects
960
961 class java_lang_ref_Reference: AllStatic {
962 static int _referent_offset;
963 static int _queue_offset;
964 static int _next_offset;
965 static int _discovered_offset;
966
967 static bool _offsets_initialized;
968
969 public:
970 // Accessors
971 static inline oop weak_referent_no_keepalive(oop ref);
972 static inline oop weak_referent(oop ref);
973 static inline oop phantom_referent_no_keepalive(oop ref);
974 static inline oop unknown_referent_no_keepalive(oop ref);
975 static inline void clear_referent(oop ref);
976 static inline void clear_referent_raw(oop ref);
977 static inline HeapWord* referent_addr_raw(oop ref);
978 static inline oop next(oop ref);
979 static inline void set_next(oop ref, oop value);
980 static inline void set_next_raw(oop ref, oop value);
981 static inline HeapWord* next_addr_raw(oop ref);
982 static inline oop discovered(oop ref);
983 static inline void set_discovered(oop ref, oop value);
984 static inline void set_discovered_raw(oop ref, oop value);
985 static inline HeapWord* discovered_addr_raw(oop ref);
986 static bool is_referent_field(oop obj, ptrdiff_t offset);
987 static inline bool is_final(oop ref);
988 static inline bool is_phantom(oop ref);
989 static inline bool is_weak(oop ref);
990 static inline bool is_soft(oop ref);
991
992 static int referent_offset() { CHECK_INIT(_referent_offset); }
993 static int queue_offset() { CHECK_INIT(_queue_offset); }
994 static int next_offset() { CHECK_INIT(_next_offset); }
995 static int discovered_offset() { CHECK_INIT(_discovered_offset); }
996
997 static void compute_offsets();
998 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
999 };
1000
1001
1002 // Interface to java.lang.ref.SoftReference objects
1003
1004 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
1005 static int _timestamp_offset;
1006 static int _static_clock_offset;
1007
1008 public:
1009 // Accessors
1010 static jlong timestamp(oop ref);
1011
1012 // Accessors for statics
1013 static jlong clock();
1014 static void set_clock(jlong value);
1015
1016 static void compute_offsets();
1017 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1018 };
1019
1020 // Interface to java.lang.invoke.MethodHandle objects
1021
1022 class java_lang_invoke_MethodHandle: AllStatic {
1023 friend class JavaClasses;
1024
1025 private:
1026 static int _type_offset; // the MethodType of this MH
1027 static int _form_offset; // the LambdaForm of this MH
1028
1029 static void compute_offsets();
1030
1031 public:
1032 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1033
1034 // Accessors
1035 static oop type(oop mh);
1036 static void set_type(oop mh, oop mtype);
1037
1038 static oop form(oop mh);
1039 static void set_form(oop mh, oop lform);
1040
1041 // Testers
1042 static bool is_subclass(Klass* klass) {
1043 return klass->is_subclass_of(vmClasses::MethodHandle_klass());
1044 }
1045 static bool is_instance(oop obj);
1046
1047 // Accessors for code generation:
1048 static int type_offset() { CHECK_INIT(_type_offset); }
1049 static int form_offset() { CHECK_INIT(_form_offset); }
1050 };
1051
1052 // Interface to java.lang.invoke.DirectMethodHandle objects
1053
1054 class java_lang_invoke_DirectMethodHandle: AllStatic {
1055 friend class JavaClasses;
1056
1057 private:
1058 static int _member_offset; // the MemberName of this DMH
1059
1060 static void compute_offsets();
1061
1062 public:
1063 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1064
1065 // Accessors
1066 static oop member(oop mh);
1067
1068 // Testers
1069 static bool is_subclass(Klass* klass) {
1070 return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass());
1071 }
1072 static bool is_instance(oop obj);
1073
1074 // Accessors for code generation:
1075 static int member_offset() { CHECK_INIT(_member_offset); }
1076 };
1077
1078 // Interface to java.lang.invoke.LambdaForm objects
1079 // (These are a private interface for managing adapter code generation.)
1080
1081 class java_lang_invoke_LambdaForm: AllStatic {
1082 friend class JavaClasses;
1083
1084 private:
1085 static int _vmentry_offset; // type is MemberName
1086
1087 static void compute_offsets();
1088
1089 public:
1090 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1091
1092 // Accessors
1093 static oop vmentry(oop lform);
1094
1095 // Testers
1096 static bool is_subclass(Klass* klass) {
1097 return vmClasses::LambdaForm_klass() != nullptr &&
1098 klass->is_subclass_of(vmClasses::LambdaForm_klass());
1099 }
1100 static bool is_instance(oop obj);
1101
1102 // Accessors for code generation:
1103 static int vmentry_offset() { CHECK_INIT(_vmentry_offset); }
1104 };
1105
1106 // Interface to java.lang.invoke.NativeEntryPoint objects
1107 // (These are a private interface for managing adapter code generation.)
1108
1109 class jdk_internal_foreign_abi_NativeEntryPoint: AllStatic {
1110 friend class JavaClasses;
1111
1112 private:
1113 static int _method_type_offset;
1114 static int _downcall_stub_address_offset;
1115
1116 static void compute_offsets();
1117
1118 public:
1119 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1120
1121 // Accessors
1122 static oop method_type(oop entry);
1123 static jlong downcall_stub_address(oop entry);
1124
1125 // Testers
1126 static bool is_subclass(Klass* klass) {
1127 return vmClasses::NativeEntryPoint_klass() != nullptr &&
1128 klass->is_subclass_of(vmClasses::NativeEntryPoint_klass());
1129 }
1130 static bool is_instance(oop obj);
1131
1132 // Accessors for code generation:
1133 static int method_type_offset_in_bytes() { return _method_type_offset; }
1134 static int downcall_stub_address_offset_in_bytes() { return _downcall_stub_address_offset; }
1135 };
1136
1137 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic {
1138 friend class JavaClasses;
1139
1140 private:
1141 static int _inputStorage_offset;
1142 static int _outputStorage_offset;
1143 static int _volatileStorage_offset;
1144 static int _stackAlignment_offset;
1145 static int _shadowSpace_offset;
1146 static int _scratch1_offset;
1147 static int _scratch2_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 objArrayOop inputStorage(oop entry);
1156 static objArrayOop outputStorage(oop entry);
1157 static objArrayOop volatileStorage(oop entry);
1158 static jint stackAlignment(oop entry);
1159 static jint shadowSpace(oop entry);
1160 static oop scratch1(oop entry);
1161 static oop scratch2(oop entry);
1162
1163 // Testers
1164 static bool is_subclass(Klass* klass) {
1165 return vmClasses::ABIDescriptor_klass() != nullptr &&
1166 klass->is_subclass_of(vmClasses::ABIDescriptor_klass());
1167 }
1168 static bool is_instance(oop obj);
1169 };
1170
1171 class jdk_internal_foreign_abi_VMStorage: AllStatic {
1172 friend class JavaClasses;
1173
1174 private:
1175 static int _type_offset;
1176 static int _indexOrOffset_offset;
1177 static int _segmentMaskOrSize_offset;
1178 static int _debugName_offset;
1179
1180 static void compute_offsets();
1181
1182 public:
1183 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1184
1185 // Accessors
1186 static jbyte type(oop entry);
1187 static jint index_or_offset(oop entry);
1188 static jshort segment_mask_or_size(oop entry);
1189 static oop debugName(oop entry);
1190
1191 // Testers
1192 static bool is_subclass(Klass* klass) {
1193 return vmClasses::VMStorage_klass() != nullptr &&
1194 klass->is_subclass_of(vmClasses::VMStorage_klass());
1195 }
1196 static bool is_instance(oop obj);
1197 };
1198
1199 class jdk_internal_foreign_abi_CallConv: AllStatic {
1200 friend class JavaClasses;
1201
1202 private:
1203 static int _argRegs_offset;
1204 static int _retRegs_offset;
1205
1206 static void compute_offsets();
1207
1208 public:
1209 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1210
1211 // Accessors
1212 static objArrayOop argRegs(oop entry);
1213 static objArrayOop retRegs(oop entry);
1214
1215 // Testers
1216 static bool is_subclass(Klass* klass) {
1217 return vmClasses::CallConv_klass() != nullptr &&
1218 klass->is_subclass_of(vmClasses::CallConv_klass());
1219 }
1220 static bool is_instance(oop obj);
1221 };
1222
1223 // Interface to java.lang.invoke.MemberName objects
1224 // (These are a private interface for Java code to query the class hierarchy.)
1225
1226 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1227 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1228
1229 class java_lang_invoke_ResolvedMethodName : AllStatic {
1230 friend class JavaClasses;
1231
1232 static int _vmtarget_offset;
1233 static int _vmholder_offset;
1234
1235 static void compute_offsets();
1236 public:
1237 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1238
1239 static int vmtarget_offset() { CHECK_INIT(_vmtarget_offset); }
1240
1241 static Method* vmtarget(oop resolved_method);
1242 static void set_vmtarget(oop resolved_method, Method* method);
1243
1244 static void set_vmholder(oop resolved_method, oop holder);
1245
1246 // find or create resolved member name
1247 static oop find_resolved_method(const methodHandle& m, TRAPS);
1248
1249 static bool is_instance(oop resolved_method);
1250 };
1251
1252
1253 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1254 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1255
1256
1257 class java_lang_invoke_MemberName: AllStatic {
1258 friend class JavaClasses;
1259
1260 private:
1261 // From java.lang.invoke.MemberName:
1262 // private Class<?> clazz; // class in which the method is defined
1263 // private String name; // may be null if not yet materialized
1264 // private Object type; // may be null if not yet materialized
1265 // private int flags; // modifier bits; see reflect.Modifier
1266 // private ResolvedMethodName method; // holds VM-specific target value
1267 // private intptr_t vmindex; // member index within class or interface
1268 static int _clazz_offset;
1269 static int _name_offset;
1270 static int _type_offset;
1271 static int _flags_offset;
1272 static int _method_offset;
1273 static int _vmindex_offset;
1274
1275 static void compute_offsets();
1276
1277 public:
1278 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1279 // Accessors
1280 static oop clazz(oop mname);
1281 static void set_clazz(oop mname, oop clazz);
1282
1283 static oop type(oop mname);
1284 static void set_type(oop mname, oop type);
1285
1286 static oop name(oop mname);
1287 static void set_name(oop mname, oop name);
1288
1289 static int flags(oop mname);
1290 static void set_flags(oop mname, int flags);
1291
1292 // Link through ResolvedMethodName field to get Method*
1293 static Method* vmtarget(oop mname);
1294 static void set_method(oop mname, oop method);
1295
1296 static intptr_t vmindex(oop mname);
1297 static void set_vmindex(oop mname, intptr_t index);
1298
1299 // Testers
1300 static bool is_subclass(Klass* klass) {
1301 return klass->is_subclass_of(vmClasses::MemberName_klass());
1302 }
1303 static bool is_instance(oop obj);
1304
1305 static bool is_method(oop obj);
1306
1307 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1308 enum {
1309 MN_IS_METHOD = 0x00010000, // method (not constructor)
1310 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1311 MN_IS_FIELD = 0x00040000, // field
1312 MN_IS_TYPE = 0x00080000, // nested type
1313 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1314 MN_TRUSTED_FINAL = 0x00200000, // trusted final field
1315 MN_HIDDEN_MEMBER = 0x00400000, // @Hidden annotation detected
1316 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1317 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1318 MN_NESTMATE_CLASS = 0x00000001,
1319 MN_HIDDEN_CLASS = 0x00000002,
1320 MN_STRONG_LOADER_LINK = 0x00000004,
1321 MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1322 // Lookup modes
1323 MN_MODULE_MODE = 0x00000010,
1324 MN_UNCONDITIONAL_MODE = 0x00000020,
1325 MN_TRUSTED_MODE = -1
1326 };
1327
1328 // Accessors for code generation:
1329 static int clazz_offset() { CHECK_INIT(_clazz_offset); }
1330 static int type_offset() { CHECK_INIT(_type_offset); }
1331 static int flags_offset() { CHECK_INIT(_flags_offset); }
1332 static int method_offset() { CHECK_INIT(_method_offset); }
1333 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1334 };
1335
1336
1337 // Interface to java.lang.invoke.MethodType objects
1338
1339 class java_lang_invoke_MethodType: AllStatic {
1340 friend class JavaClasses;
1341
1342 private:
1343 static int _rtype_offset;
1344 static int _ptypes_offset;
1345
1346 static void compute_offsets();
1347
1348 public:
1349 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1350 // Accessors
1351 static oop rtype(oop mt);
1352 static objArrayOop ptypes(oop mt);
1353
1354 static oop ptype(oop mt, int index);
1355 static int ptype_count(oop mt);
1356
1357 static int ptype_slot_count(oop mt); // extra counts for long/double
1358 static int rtype_slot_count(oop mt); // extra counts for long/double
1359
1360 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1361 static void print_signature(oop mt, outputStream* st);
1362
1363 static bool is_instance(oop obj);
1364
1365 static bool equals(oop mt1, oop mt2);
1366
1367 // Accessors for code generation:
1368 static int rtype_offset() { CHECK_INIT(_rtype_offset); }
1369 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); }
1370 };
1371
1372
1373 // Interface to java.lang.invoke.CallSite objects
1374
1375 class java_lang_invoke_CallSite: AllStatic {
1376 friend class JavaClasses;
1377
1378 private:
1379 static int _target_offset;
1380 static int _context_offset;
1381
1382 static void compute_offsets();
1383
1384 public:
1385 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1386 // Accessors
1387 static oop target( oop site);
1388 static void set_target( oop site, oop target);
1389 static void set_target_volatile( oop site, oop target);
1390
1391 static oop context_no_keepalive(oop site);
1392
1393 // Testers
1394 static bool is_subclass(Klass* klass) {
1395 return klass->is_subclass_of(vmClasses::CallSite_klass());
1396 }
1397 static bool is_instance(oop obj);
1398
1399 // Accessors for code generation:
1400 static int target_offset() { CHECK_INIT(_target_offset); }
1401 static int context_offset() { CHECK_INIT(_context_offset); }
1402 };
1403
1404 // Interface to java.lang.invoke.ConstantCallSite objects
1405
1406 class java_lang_invoke_ConstantCallSite: AllStatic {
1407 friend class JavaClasses;
1408
1409 private:
1410 static int _is_frozen_offset;
1411
1412 static void compute_offsets();
1413
1414 public:
1415 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1416 // Accessors
1417 static jboolean is_frozen(oop site);
1418
1419 // Testers
1420 static bool is_subclass(Klass* klass) {
1421 return klass->is_subclass_of(vmClasses::ConstantCallSite_klass());
1422 }
1423 static bool is_instance(oop obj);
1424 };
1425
1426 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1427
1428 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1429 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1430 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1431
1432 class DependencyContext;
1433
1434 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1435 friend class JavaClasses;
1436
1437 private:
1438 static int _vmdependencies_offset;
1439 static int _last_cleanup_offset;
1440
1441 static void compute_offsets();
1442
1443 public:
1444 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1445 // Accessors
1446 static DependencyContext vmdependencies(oop context);
1447
1448 // Testers
1449 static bool is_subclass(Klass* klass) {
1450 return klass->is_subclass_of(vmClasses::Context_klass());
1451 }
1452 static bool is_instance(oop obj);
1453 };
1454
1455 // Interface to java.security.AccessControlContext objects
1456
1457 class java_security_AccessControlContext: AllStatic {
1458 private:
1459 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1460 // so we compute the offsets at startup rather than hard-wiring them.
1461 static int _context_offset;
1462 static int _privilegedContext_offset;
1463 static int _isPrivileged_offset;
1464 static int _isAuthorized_offset;
1465
1466 static void compute_offsets();
1467 public:
1468 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1469 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1470
1471 // Debugging/initialization
1472 friend class JavaClasses;
1473 };
1474
1475
1476 // Interface to java.lang.ClassLoader objects
1477
1478 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1479 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1480
1481 class java_lang_ClassLoader : AllStatic {
1482 private:
1483 static int _loader_data_offset;
1484 static int _parent_offset;
1485 static int _parallelCapable_offset;
1486 static int _name_offset;
1487 static int _nameAndId_offset;
1488 static int _unnamedModule_offset;
1489
1490 static void compute_offsets();
1491
1492 public:
1493 // Support for CDS
1494 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1495 static int loader_data_offset() { return _loader_data_offset; }
1496
1497 static ClassLoaderData* loader_data_acquire(oop loader);
1498 static ClassLoaderData* loader_data(oop loader);
1499 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1500
1501 static oop parent(oop loader);
1502 static oop parent_no_keepalive(oop loader);
1503 static oop name(oop loader);
1504 static oop nameAndId(oop loader);
1505 static bool isAncestor(oop loader, oop cl);
1506
1507 // Support for parallelCapable field
1508 static bool parallelCapable(oop the_class_mirror);
1509
1510 static bool is_trusted_loader(oop loader);
1511
1512 // Return true if this is one of the class loaders associated with
1513 // the generated bytecodes for serialization constructor returned
1514 // by sun.reflect.ReflectionFactory::newConstructorForSerialization
1515 static bool is_reflection_class_loader(oop loader);
1516
1517 // Fix for 4474172
1518 static oop non_reflection_class_loader(oop loader);
1519
1520 // Testers
1521 static bool is_subclass(Klass* klass) {
1522 return klass->is_subclass_of(vmClasses::ClassLoader_klass());
1523 }
1524 static bool is_instance(oop obj);
1525
1526 static oop unnamedModule(oop loader);
1527
1528 // Debugging
1529 friend class JavaClasses;
1530 };
1531
1532
1533 // Interface to java.lang.System objects
1534
1535 class java_lang_System : AllStatic {
1536 private:
1537 static int _static_in_offset;
1538 static int _static_out_offset;
1539 static int _static_err_offset;
1540 static int _static_security_offset;
1541 static int _static_allow_security_offset;
1542 static int _static_never_offset;
1543
1544 public:
1545 static int in_offset() { CHECK_INIT(_static_in_offset); }
1546 static int out_offset() { CHECK_INIT(_static_out_offset); }
1547 static int err_offset() { CHECK_INIT(_static_err_offset); }
1548 static bool allow_security_manager();
1549 static bool has_security_manager();
1550
1551 static void compute_offsets();
1552 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1553
1554 // Debugging
1555 friend class JavaClasses;
1556 };
1557
1558
1559 // Interface to java.lang.StackTraceElement objects
1560
1561 class java_lang_StackTraceElement: AllStatic {
1562 private:
1563 static int _declaringClassObject_offset;
1564 static int _classLoaderName_offset;
1565 static int _moduleName_offset;
1566 static int _moduleVersion_offset;
1567 static int _declaringClass_offset;
1568 static int _methodName_offset;
1569 static int _fileName_offset;
1570 static int _lineNumber_offset;
1571
1572 // Setters
1573 static void set_classLoaderName(oop element, oop value);
1574 static void set_moduleName(oop element, oop value);
1575 static void set_moduleVersion(oop element, oop value);
1576 static void set_declaringClass(oop element, oop value);
1577 static void set_methodName(oop element, oop value);
1578 static void set_fileName(oop element, oop value);
1579 static void set_lineNumber(oop element, int value);
1580 static void set_declaringClassObject(oop element, oop value);
1581
1582 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1583 const methodHandle& method, int bci,
1584 Symbol*& source, oop& source_file, int& line_number, TRAPS);
1585
1586 public:
1587 // Create an instance of StackTraceElement
1588 static oop create(const methodHandle& method, int bci, TRAPS);
1589
1590 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1591 int version, int bci, Symbol* name, TRAPS);
1592
1593 static void compute_offsets();
1594 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1595
1596 #if INCLUDE_JVMCI
1597 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1598 #endif
1599
1600 // Debugging
1601 friend class JavaClasses;
1602 };
1603
1604
1605 class Backtrace: AllStatic {
1606 public:
1607 // Helper backtrace functions to store bci|version together.
1608 static int merge_bci_and_version(int bci, int version);
1609 static int merge_mid_and_cpref(int mid, int cpref);
1610 static int bci_at(unsigned int merged);
1611 static int version_at(unsigned int merged);
1612 static int mid_at(unsigned int merged);
1613 static int cpref_at(unsigned int merged);
1614 static int get_line_number(Method* method, int bci);
1615 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1616
1617 // Debugging
1618 friend class JavaClasses;
1619 };
1620
1621 class java_lang_ClassFrameInfo: AllStatic {
1622 private:
1623 static int _classOrMemberName_offset;
1624 static int _flags_offset;
1625
1626 public:
1627 static oop classOrMemberName(oop info);
1628 static int flags(oop info);
1629
1630 // Setters
1631 static void init_class(Handle stackFrame, const methodHandle& m);
1632 static void init_method(Handle stackFrame, const methodHandle& m, TRAPS);
1633
1634 static void compute_offsets();
1635 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1636
1637 // Debugging
1638 friend class JavaClasses;
1639 };
1640
1641 // Interface to java.lang.StackFrameInfo objects
1642
1643 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1644 macro(java_lang_StackFrameInfo, version, short_signature, false)
1645
1646 class java_lang_StackFrameInfo: AllStatic {
1647 private:
1648 static int _type_offset;
1649 static int _name_offset;
1650 static int _bci_offset;
1651 static int _version_offset;
1652 static int _contScope_offset;
1653
1654 public:
1655 // Getters
1656 static oop name(oop info);
1657 static oop type(oop info);
1658 static Method* get_method(oop info);
1659
1660 // Setters
1661 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS);
1662 static void set_name(oop info, oop value);
1663 static void set_type(oop info, oop value);
1664 static void set_bci(oop info, int value);
1665
1666 static void set_version(oop info, short value);
1667 static void set_contScope(oop info, oop value);
1668
1669 static void compute_offsets();
1670 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1671
1672 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1673
1674 // Debugging
1675 friend class JavaClasses;
1676 };
1677
1678 class java_lang_LiveStackFrameInfo: AllStatic {
1679 private:
1680 static int _monitors_offset;
1681 static int _locals_offset;
1682 static int _operands_offset;
1683 static int _mode_offset;
1684
1685 public:
1686 static void set_monitors(oop info, oop value);
1687 static void set_locals(oop info, oop value);
1688 static void set_operands(oop info, oop value);
1689 static void set_mode(oop info, int value);
1690
1691 static void compute_offsets();
1692 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1693
1694 // Debugging
1695 friend class JavaClasses;
1696 };
1697
1698 // Interface to java.lang.reflect.RecordComponent objects
1699
1700 class java_lang_reflect_RecordComponent: AllStatic {
1701 private:
1702 static int _clazz_offset;
1703 static int _name_offset;
1704 static int _type_offset;
1705 static int _accessor_offset;
1706 static int _signature_offset;
1707 static int _annotations_offset;
1708 static int _typeAnnotations_offset;
1709
1710 // Setters
1711 static void set_clazz(oop element, oop value);
1712 static void set_name(oop element, oop value);
1713 static void set_type(oop element, oop value);
1714 static void set_accessor(oop element, oop value);
1715 static void set_signature(oop element, oop value);
1716 static void set_annotations(oop element, oop value);
1717 static void set_typeAnnotations(oop element, oop value);
1718
1719 public:
1720 // Create an instance of RecordComponent
1721 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1722
1723 static void compute_offsets();
1724 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1725
1726 // Debugging
1727 friend class JavaClasses;
1728 };
1729
1730
1731 // Interface to java.lang.AssertionStatusDirectives objects
1732
1733 class java_lang_AssertionStatusDirectives: AllStatic {
1734 private:
1735 static int _classes_offset;
1736 static int _classEnabled_offset;
1737 static int _packages_offset;
1738 static int _packageEnabled_offset;
1739 static int _deflt_offset;
1740
1741 public:
1742 // Setters
1743 static void set_classes(oop obj, oop val);
1744 static void set_classEnabled(oop obj, oop val);
1745 static void set_packages(oop obj, oop val);
1746 static void set_packageEnabled(oop obj, oop val);
1747 static void set_deflt(oop obj, bool val);
1748
1749 static void compute_offsets();
1750 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1751
1752 // Debugging
1753 friend class JavaClasses;
1754 };
1755
1756
1757 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1758 private:
1759 static int _owner_offset;
1760 public:
1761 static void compute_offsets();
1762 static oop get_owner_threadObj(oop obj);
1763 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1764 };
1765
1766 // Interface to jdk.internal.misc.UnsafeConsants
1767
1768 class jdk_internal_misc_UnsafeConstants : AllStatic {
1769 public:
1770 static void set_unsafe_constants();
1771 static void compute_offsets() { }
1772 static void serialize_offsets(SerializeClosure* f) { }
1773 };
1774
1775 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects
1776
1777 class vector_VectorPayload : AllStatic {
1778 private:
1779 static int _payload_offset;
1780 public:
1781 static void set_payload(oop o, oop val);
1782
1783 static void compute_offsets();
1784 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1785
1786 // Testers
1787 static bool is_subclass(Klass* klass) {
1788 return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass());
1789 }
1790 static bool is_instance(oop obj);
1791 };
1792
1793 class java_lang_Integer : AllStatic {
1794 public:
1795 static jint value(oop obj);
1796 };
1797
1798 class java_lang_Long : AllStatic {
1799 public:
1800 static jlong value(oop obj);
1801 };
1802
1803 class java_lang_Character : AllStatic {
1804 public:
1805 static jchar value(oop obj);
1806 };
1807
1808 class java_lang_Short : AllStatic {
1809 public:
1810 static jshort value(oop obj);
1811 };
1812
1813 class java_lang_Byte : AllStatic {
1814 public:
1815 static jbyte value(oop obj);
1816 };
1817
1818 class java_lang_Boolean : AllStatic {
1819 private:
1820 static int _static_TRUE_offset;
1821 static int _static_FALSE_offset;
1822 public:
1823 static Symbol* symbol();
1824 static void compute_offsets(InstanceKlass* k);
1825 static oop get_TRUE(InstanceKlass *k);
1826 static oop get_FALSE(InstanceKlass *k);
1827 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1828 static jboolean value(oop obj);
1829 };
1830
1831 class java_lang_Integer_IntegerCache : AllStatic {
1832 private:
1833 static int _static_cache_offset;
1834 public:
1835 static Symbol* symbol();
1836 static void compute_offsets(InstanceKlass* k);
1837 static objArrayOop cache(InstanceKlass *k);
1838 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1839 };
1840
1841 class java_lang_Long_LongCache : AllStatic {
1842 private:
1843 static int _static_cache_offset;
1844 public:
1845 static Symbol* symbol();
1846 static void compute_offsets(InstanceKlass* k);
1847 static objArrayOop cache(InstanceKlass *k);
1848 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1849 };
1850
1851 class java_lang_Character_CharacterCache : 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_Short_ShortCache : 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_Byte_ByteCache : 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
1882 // Interface to java.lang.InternalError objects
1883
1884 #define INTERNALERROR_INJECTED_FIELDS(macro) \
1885 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1886
1887 class java_lang_InternalError : AllStatic {
1888 private:
1889 static int _during_unsafe_access_offset;
1890 public:
1891 static jboolean during_unsafe_access(oop internal_error);
1892 static void set_during_unsafe_access(oop internal_error);
1893 static void compute_offsets();
1894 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1895 };
1896
1897 // Use to declare fields that need to be injected into Java classes
1898 // for the JVM to use. The name_index and signature_index are
1899 // declared in vmSymbols. The may_be_java flag is used to declare
1900 // fields that might already exist in Java but should be injected if
1901 // they don't. Otherwise the field is unconditionally injected and
1902 // the JVM uses the injected one. This is to ensure that name
1903 // collisions don't occur. In general may_be_java should be false
1904 // unless there's a good reason.
1905
1906 class InjectedField {
1907 public:
1908 const vmClassID klass_id;
1909 const vmSymbolID name_index;
1910 const vmSymbolID signature_index;
1911 const bool may_be_java;
1912
1913
1914 Klass* klass() const { return vmClasses::klass_at(klass_id); }
1915 Symbol* name() const { return lookup_symbol(name_index); }
1916 Symbol* signature() const { return lookup_symbol(signature_index); }
1917
1918 int compute_offset();
1919
1920 // Find the Symbol for this index
1921 static Symbol* lookup_symbol(vmSymbolID symbol_index) {
1922 return Symbol::vm_symbol_at(symbol_index);
1923 }
1924 };
1925
1926
1927 // Interface to hard-coded offset checking
1928
1929 enum class InjectedFieldID : int;
1930
1931 class JavaClasses : AllStatic {
1932 private:
1933
1934 static InjectedField _injected_fields[];
1935
1936 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1937 public:
1938
1939 static int compute_injected_offset(InjectedFieldID id);
1940
1941 static void compute_offsets();
1942 static void check_offsets() PRODUCT_RETURN;
1943 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1944 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1945 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1946
1947 static void compute_offset(int &dest_offset,
1948 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
1949 bool is_static = false);
1950 static void compute_offset(int& dest_offset, InstanceKlass* ik,
1951 const char* name_string, Symbol* signature_symbol,
1952 bool is_static = false);
1953 };
1954
1955 #undef CHECK_INIT
1956
1957 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP