1 /*
2 * Copyright (c) 1997, 2022, 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 "runtime/handles.hpp"
32 #include "utilities/macros.hpp"
33 #include "utilities/vmEnums.hpp"
34
35 class JvmtiThreadState;
36 class RecordComponent;
37
38 #define CHECK_INIT(offset) assert(offset != 0, "should be initialized"); return offset;
39
40 // Interface to java.lang.Object objects
41
42 class java_lang_Object : AllStatic {
43 public:
44 static void register_natives(TRAPS);
45 };
46
47 // Interface to java.lang.String objects
48
49 // The flags field is a collection of bits representing boolean values used
50 // internally by the VM.
51 #define STRING_INJECTED_FIELDS(macro) \
52 macro(java_lang_String, flags, byte_signature, false)
53
54 class java_lang_String : AllStatic {
55 private:
56 static int _value_offset;
57 static int _hash_offset;
58 static int _hashIsZero_offset;
59 static int _coder_offset;
60 static int _flags_offset;
61
62 static bool _initialized;
63
64 static Handle basic_create(int length, bool byte_arr, TRAPS);
65
66 static inline void set_coder(oop string, jbyte coder);
67
68 // Bitmasks for values in the injected flags field.
69 static const uint8_t _deduplication_forbidden_mask = 1 << 0;
70 static const uint8_t _deduplication_requested_mask = 1 << 1;
71
72 static int flags_offset() { CHECK_INIT(_flags_offset); }
73 // Return the address of the injected flags field.
74 static inline uint8_t* flags_addr(oop java_string);
75 // Test whether the designated bit of the injected flags field is set.
76 static inline bool is_flag_set(oop java_string, uint8_t flag_mask);
77 // Atomically test and set the designated bit of the injected flags field,
78 // returning true if the bit was already set.
79 static bool test_and_set_flag(oop java_string, uint8_t flag_mask);
80
81 static inline unsigned int hash_code_impl(oop java_string, bool update);
82
83 public:
84
85 // Coders
86 enum Coder {
87 CODER_LATIN1 = 0,
88 CODER_UTF16 = 1
89 };
90
91 static void compute_offsets();
92 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
93
94 // Instance creation
95 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
96 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
97 static Handle create_from_str(const char* utf8_str, TRAPS);
98 static oop create_oop_from_str(const char* utf8_str, TRAPS);
99 static Handle create_from_symbol(Symbol* symbol, TRAPS);
100 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
101
102 static void set_compact_strings(bool value);
103
104 static int value_offset() { CHECK_INIT(_value_offset); }
105 static int coder_offset() { CHECK_INIT(_coder_offset); }
106
107 static inline void set_value_raw(oop string, typeArrayOop buffer);
108 static inline void set_value(oop string, typeArrayOop buffer);
109
110 // Set the deduplication_forbidden flag true. This flag is sticky; once
111 // set it never gets cleared. This is set when a String is interned in
112 // the StringTable, to prevent string deduplication from changing the
113 // String's value array.
114 static inline void set_deduplication_forbidden(oop java_string);
115
116 // Test and set the deduplication_requested flag. Returns the old value
117 // of the flag. This flag is sticky; once set it never gets cleared.
118 // Some GCs may use this flag when deciding whether to request
119 // deduplication of a String, to avoid multiple requests for the same
120 // object.
121 static inline bool test_and_set_deduplication_requested(oop java_string);
122
123 // Accessors
124 static inline typeArrayOop value(oop java_string);
125 static inline typeArrayOop value_no_keepalive(oop java_string);
126 static inline bool hash_is_set(oop string);
127 static inline bool is_latin1(oop java_string);
128 static inline bool deduplication_forbidden(oop java_string);
129 static inline bool deduplication_requested(oop java_string);
130 static inline int length(oop java_string);
131 static inline int length(oop java_string, typeArrayOop string_value);
132 static int utf8_length(oop java_string);
133 static int utf8_length(oop java_string, typeArrayOop string_value);
134
135 // String converters
136 static char* as_utf8_string(oop java_string);
137 static char* as_utf8_string(oop java_string, int& length);
138 static char* as_utf8_string_full(oop java_string, char* buf, int buflen, int& length);
139 static char* as_utf8_string(oop java_string, char* buf, int buflen);
140 static char* as_utf8_string(oop java_string, int start, int len);
141 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
142 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
143 static char* as_platform_dependent_str(Handle java_string, TRAPS);
144 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
145 static jchar* as_unicode_string_or_null(oop java_string, int& length);
146 // produce an ascii string with all other values quoted using \u####
147 static char* as_quoted_ascii(oop java_string);
148
149 // Compute the hash value for a java.lang.String object which would
150 // contain the characters passed in.
151 //
152 // As the hash value used by the String object itself, in
153 // String.hashCode(). This value is normally calculated in Java code
154 // in the String.hashCode method(), but is precomputed for String
155 // objects in the shared archive file.
156 // hash P(31) from Kernighan & Ritchie
157 //
158 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
159 static unsigned int hash_code(const jchar* s, int len) {
160 unsigned int h = 0;
161 while (len-- > 0) {
162 h = 31*h + (unsigned int) *s;
163 s++;
164 }
165 return h;
166 }
167
168 static unsigned int hash_code(const jbyte* s, int len) {
169 unsigned int h = 0;
170 while (len-- > 0) {
171 h = 31*h + (((unsigned int) *s) & 0xFF);
172 s++;
173 }
174 return h;
175 }
176
177 static unsigned int hash_code(oop java_string);
178 static unsigned int hash_code_noupdate(oop java_string);
179
180 static bool equals(oop java_string, const jchar* chars, int len);
181 static bool equals(oop str1, oop str2);
182 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
183
184 // Conversion between '.' and '/' formats, and allocate a String from the result.
185 static Handle externalize_classname(Symbol* java_name, TRAPS);
186
187 // Conversion
188 static Symbol* as_symbol(oop java_string);
189 static Symbol* as_symbol_or_null(oop java_string);
190
191 // Tester
192 static inline bool is_instance(oop obj);
193
194 // Debugging
195 static void print(oop java_string, outputStream* st);
196 friend class JavaClasses;
197 friend class StringTable;
198 };
199
200
201 // Interface to java.lang.Class objects
202
203 #define CLASS_INJECTED_FIELDS(macro) \
204 macro(java_lang_Class, klass, intptr_signature, false) \
205 macro(java_lang_Class, array_klass, intptr_signature, false) \
206 macro(java_lang_Class, oop_size, int_signature, false) \
207 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
208 macro(java_lang_Class, protection_domain, object_signature, false) \
209 macro(java_lang_Class, signers, object_signature, false) \
210 macro(java_lang_Class, source_file, object_signature, false) \
211
212 class java_lang_Class : AllStatic {
213 friend class VMStructs;
214 friend class JVMCIVMStructs;
215
216 private:
217
218 // The fake offsets are added by the class loader when java.lang.Class is loaded
219
220 static int _klass_offset;
221 static int _array_klass_offset;
222
223 static int _oop_size_offset;
224 static int _static_oop_field_count_offset;
225
226 static int _protection_domain_offset;
227 static int _signers_offset;
228 static int _class_loader_offset;
229 static int _module_offset;
230 static int _component_mirror_offset;
231 static int _primary_mirror_offset;
232 static int _secondary_mirror_offset;
233
234 static int _name_offset;
235 static int _source_file_offset;
236 static int _classData_offset;
237 static int _classRedefinedCount_offset;
238
239 static bool _offsets_computed;
240
241 static GrowableArray<Klass*>* _fixup_mirror_list;
242 static GrowableArray<Klass*>* _fixup_module_field_list;
243
244 static void set_protection_domain(oop java_class, oop protection_domain);
245 static void set_class_loader(oop java_class, oop class_loader);
246 static void set_component_mirror(oop java_class, oop comp_mirror);
247 static void set_primary_mirror(oop java_class, oop comp_mirror);
248 static void set_secondary_mirror(oop java_class, oop comp_mirror);
249
250 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
251 Handle classData, TRAPS);
252 static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
253 public:
254 static void allocate_fixup_lists();
255 static void compute_offsets();
256
257 // Instance creation
258 static void create_mirror(Klass* k, Handle class_loader, Handle module,
259 Handle protection_domain, Handle classData, TRAPS);
260 static void fixup_mirror(Klass* k, TRAPS);
261 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
262 static oop create_secondary_mirror(Klass* k, Handle mirror, TRAPS);
263
264 // Archiving
265 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
266 static void archive_basic_type_mirrors() NOT_CDS_JAVA_HEAP_RETURN;
267 static oop archive_mirror(Klass* k) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
268 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror)
269 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
270 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
271 Handle protection_domain,
272 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
273
274 static void fixup_module_field(Klass* k, Handle module);
275
276 // Conversion
277 static Klass* as_Klass(oop java_class);
278 static void set_klass(oop java_class, Klass* klass);
279 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
280 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
281 static void print_signature(oop java_class, outputStream *st);
282 static const char* as_external_name(oop java_class);
283 // Testing
284 static bool is_instance(oop obj);
285
286 static bool is_primitive(oop java_class);
287 static BasicType primitive_type(oop java_class);
288 static oop primitive_mirror(BasicType t);
289 // JVM_NewArray support
290 static Klass* array_klass_acquire(oop java_class);
291 static void release_set_array_klass(oop java_class, Klass* klass);
292 // compiler support for class operations
293 static int klass_offset() { CHECK_INIT(_klass_offset); }
294 static int array_klass_offset() { CHECK_INIT(_array_klass_offset); }
295 static int component_mirror_offset() { CHECK_INIT(_component_mirror_offset); }
296 static int primary_mirror_offset() { CHECK_INIT(_primary_mirror_offset); }
297 static int secondary_mirror_offset() { CHECK_INIT(_secondary_mirror_offset); }
298 // Support for classRedefinedCount field
299 static int classRedefinedCount(oop the_class_mirror);
300 static void set_classRedefinedCount(oop the_class_mirror, int value);
301
302 // Support for embedded per-class oops
303 static oop protection_domain(oop java_class);
304 static oop component_mirror(oop java_class);
305 static oop primary_mirror(oop java_class);
306 static oop secondary_mirror(oop java_class);
307 static bool is_primary_mirror(oop java_class);
308 static bool is_secondary_mirror(oop java_class);
309
310 static objArrayOop signers(oop java_class);
311 static void set_signers(oop java_class, objArrayOop signers);
312 static oop class_data(oop java_class);
313 static void set_class_data(oop java_class, oop classData);
314
315 static oop class_loader(oop java_class);
316 static void set_module(oop java_class, oop module);
317 static oop module(oop java_class);
318
319 static oop name(Handle java_class, TRAPS);
320
321 static oop source_file(oop java_class);
322 static void set_source_file(oop java_class, oop source_file);
323
324 static size_t oop_size(oop java_class);
325 static void set_oop_size(HeapWord* java_class, size_t size);
326 static int static_oop_field_count(oop java_class);
327 static void set_static_oop_field_count(oop java_class, int size);
328
329 static GrowableArray<Klass*>* fixup_mirror_list() {
330 return _fixup_mirror_list;
331 }
332 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
333 _fixup_mirror_list = v;
334 }
335
336 static GrowableArray<Klass*>* fixup_module_field_list() {
337 return _fixup_module_field_list;
338 }
339 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
340 _fixup_module_field_list = v;
341 }
342
343 // Debugging
344 friend class JavaClasses;
345 };
346
347 // Interface to java.lang.Thread objects
348
349 #define THREAD_INJECTED_FIELDS(macro) \
350 macro(java_lang_Thread, jvmti_thread_state, intptr_signature, false) \
351 JFR_ONLY(macro(java_lang_Thread, jfr_epoch, short_signature, false))
352
353 class java_lang_Thread : AllStatic {
354 friend class java_lang_VirtualThread;
355 private:
356 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
357 // so we compute the offsets at startup rather than hard-wiring them.
358 static int _holder_offset;
359 static int _name_offset;
360 static int _contextClassLoader_offset;
361 static int _inheritedAccessControlContext_offset;
362 static int _eetop_offset;
363 static int _jvmti_thread_state_offset;
364 static int _interrupted_offset;
365 static int _tid_offset;
366 static int _continuation_offset;
367 static int _park_blocker_offset;
368 static int _scopedValueBindings_offset;
369 JFR_ONLY(static int _jfr_epoch_offset;)
370
371 static void compute_offsets();
372
373 public:
374 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
375
376 // Returns the JavaThread associated with the thread obj
377 static JavaThread* thread(oop java_thread);
378 // Set JavaThread for instance
379 static void set_thread(oop java_thread, JavaThread* thread);
380 // FieldHolder
381 static oop holder(oop java_thread);
382 // Interrupted status
383 static bool interrupted(oop java_thread);
384 static void set_interrupted(oop java_thread, bool val);
385 // Name
386 static oop name(oop java_thread);
387 static void set_name(oop java_thread, oop name);
388 // Priority
389 static ThreadPriority priority(oop java_thread);
390 static void set_priority(oop java_thread, ThreadPriority priority);
391 // Thread group
392 static oop threadGroup(oop java_thread);
393 // Alive (NOTE: this is not really a field, but provides the correct
394 // definition without doing a Java call)
395 static bool is_alive(oop java_thread);
396 // Daemon
397 static bool is_daemon(oop java_thread);
398 static void set_daemon(oop java_thread);
399 // Context ClassLoader
400 static oop context_class_loader(oop java_thread);
401 // Control context
402 static oop inherited_access_control_context(oop java_thread);
403 // Stack size hint
404 static jlong stackSize(oop java_thread);
405 // Thread ID
406 static int64_t thread_id(oop java_thread);
407 static ByteSize thread_id_offset();
408 // Continuation
409 static inline oop continuation(oop java_thread);
410
411 static JvmtiThreadState* jvmti_thread_state(oop java_thread);
412 static void set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state);
413
414 // Clear all scoped value bindings on error
415 static void clear_scopedValueBindings(oop java_thread);
416
417 // Blocker object responsible for thread parking
418 static oop park_blocker(oop java_thread);
419
420 // Write thread status info to threadStatus field of java.lang.Thread.
421 static void set_thread_status(oop java_thread_oop, JavaThreadStatus status);
422 // Read thread status info from threadStatus field of java.lang.Thread.
423 static JavaThreadStatus get_thread_status(oop java_thread_oop);
424
425 static const char* thread_status_name(oop java_thread_oop);
426
427 // Fill in current stack trace, can cause GC
428 static oop async_get_stack_trace(oop java_thread, TRAPS);
429
430 JFR_ONLY(static u2 jfr_epoch(oop java_thread);)
431 JFR_ONLY(static void set_jfr_epoch(oop java_thread, u2 epoch);)
432 JFR_ONLY(static int jfr_epoch_offset() { CHECK_INIT(_jfr_epoch_offset); })
433
434 // Debugging
435 friend class JavaClasses;
436 };
437
438 // Interface to java.lang.Thread$FieldHolder objects
439
440 class java_lang_Thread_FieldHolder : AllStatic {
441 private:
442 static int _group_offset;
443 static int _priority_offset;
444 static int _stackSize_offset;
445 static int _daemon_offset;
446 static int _thread_status_offset;
447
448 static void compute_offsets();
449
450 public:
451 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
452
453 static oop threadGroup(oop holder);
454
455 static ThreadPriority priority(oop holder);
456 static void set_priority(oop holder, ThreadPriority priority);
457
458 static jlong stackSize(oop holder);
459
460 static bool is_daemon(oop holder);
461 static void set_daemon(oop holder);
462
463 static void set_thread_status(oop holder, JavaThreadStatus);
464 static JavaThreadStatus get_thread_status(oop holder);
465
466 friend class JavaClasses;
467 };
468
469 // Interface to java.lang.Thread$Constants objects
470
471 class java_lang_Thread_Constants : AllStatic {
472 private:
473 static int _static_VTHREAD_GROUP_offset;
474 static int _static_NOT_SUPPORTED_CLASSLOADER_offset;
475
476 static void compute_offsets();
477 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
478
479 public:
480 static oop get_VTHREAD_GROUP();
481 static oop get_NOT_SUPPORTED_CLASSLOADER();
482
483 friend class JavaClasses;
484 };
485
486 // Interface to java.lang.ThreadGroup objects
487
488 class java_lang_ThreadGroup : AllStatic {
489 private:
490 static int _parent_offset;
491 static int _name_offset;
492 static int _maxPriority_offset;
493 static int _daemon_offset;
494
495 static void compute_offsets();
496 public:
497 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
498
499 // parent ThreadGroup
500 static oop parent(oop java_thread_group);
501 // name
502 static const char* name(oop java_thread_group);
503 // maxPriority in group
504 static ThreadPriority maxPriority(oop java_thread_group);
505 // Daemon
506 static bool is_daemon(oop java_thread_group);
507
508 // Debugging
509 friend class JavaClasses;
510 };
511
512
513 // Interface to java.lang.VirtualThread objects
514
515 class java_lang_VirtualThread : AllStatic {
516 private:
517 static int static_notify_jvmti_events_offset;
518 static int static_vthread_scope_offset;
519 static int _carrierThread_offset;
520 static int _continuation_offset;
521 static int _state_offset;
522 JFR_ONLY(static int _jfr_epoch_offset;)
523 public:
524 enum {
525 NEW = 0,
526 STARTED = 1,
527 RUNNABLE = 2,
528 RUNNING = 3,
529 PARKING = 4,
530 PARKED = 5,
531 PINNED = 6,
532 YIELDING = 7,
533 TERMINATED = 99,
534
535 // can be suspended from scheduling when unmounted
536 SUSPENDED = 1 << 8,
537 RUNNABLE_SUSPENDED = (RUNNABLE | SUSPENDED),
538 PARKED_SUSPENDED = (PARKED | SUSPENDED)
539 };
540
541 static void compute_offsets();
542 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
543
544 // Testers
545 static bool is_subclass(Klass* klass) {
546 return klass->is_subclass_of(vmClasses::VirtualThread_klass());
547 }
548 static bool is_instance(oop obj);
549
550 static oop vthread_scope();
551 static oop carrier_thread(oop vthread);
552 static oop continuation(oop vthread);
553 static int state(oop vthread);
554 static JavaThreadStatus map_state_to_thread_status(int state);
555 static bool notify_jvmti_events();
556 static void set_notify_jvmti_events(bool enable);
557 static void init_static_notify_jvmti_events();
558 };
559
560
561 // Interface to java.lang.Throwable objects
562
563 class java_lang_Throwable: AllStatic {
564 friend class BacktraceBuilder;
565 friend class BacktraceIterator;
566
567 private:
568 // Trace constants
569 enum {
570 trace_methods_offset = 0,
571 trace_bcis_offset = 1,
572 trace_mirrors_offset = 2,
573 trace_names_offset = 3,
574 trace_conts_offset = 4,
575 trace_next_offset = 5,
576 trace_hidden_offset = 6,
577 trace_size = 7,
578 trace_chunk_size = 32
579 };
580
581 static int _backtrace_offset;
582 static int _detailMessage_offset;
583 static int _stackTrace_offset;
584 static int _depth_offset;
585 static int _cause_offset;
586 static int _static_unassigned_stacktrace_offset;
587
588 // StackTrace (programmatic access, new since 1.4)
589 static void clear_stacktrace(oop throwable);
590 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
591 static void set_stacktrace(oop throwable, oop st_element_array);
592 static oop unassigned_stacktrace();
593
594 public:
595 // Backtrace
596 static oop backtrace(oop throwable);
597 static void set_backtrace(oop throwable, oop value);
598 static int depth(oop throwable);
599 static void set_depth(oop throwable, int value);
600 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
601 // Message
602 static oop message(oop throwable);
603 static oop cause(oop throwable);
604 static void set_message(oop throwable, oop value);
605 static Symbol* detail_message(oop throwable);
606 static void print_stack_element(outputStream *st, Method* method, int bci);
607
608 static void compute_offsets();
609 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
610
611 // Allocate space for backtrace (created but stack trace not filled in)
612 static void allocate_backtrace(Handle throwable, TRAPS);
613 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
614 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
615 // Fill in current stack trace, can cause GC
616 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
617 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
618
619 // Programmatic access to stack trace
620 static void get_stack_trace_elements(int depth, Handle backtrace, objArrayHandle stack_trace, TRAPS);
621
622 // For recreating class initialization error exceptions.
623 static Handle get_cause_with_stack_trace(Handle throwable, TRAPS);
624
625 // Printing
626 static void print(oop throwable, outputStream* st);
627 static void print_stack_trace(Handle throwable, outputStream* st);
628 static void java_printStackTrace(Handle throwable, TRAPS);
629 // Debugging
630 friend class JavaClasses;
631 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
632 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
633 };
634
635
636 // Interface to java.lang.reflect.AccessibleObject objects
637
638 class java_lang_reflect_AccessibleObject: AllStatic {
639 private:
640 // Note that to reduce dependencies on the JDK we compute these
641 // offsets at run-time.
642 static int _override_offset;
643
644 static void compute_offsets();
645
646 public:
647 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
648
649 // Accessors
650 static jboolean override(oop reflect);
651 static void set_override(oop reflect, jboolean value);
652
653 // Debugging
654 friend class JavaClasses;
655 };
656
657
658 // Interface to java.lang.reflect.Method objects
659
660 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
661 private:
662 // Note that to reduce dependencies on the JDK we compute these
663 // offsets at run-time.
664 static int _clazz_offset;
665 static int _name_offset;
666 static int _returnType_offset;
667 static int _parameterTypes_offset;
668 static int _exceptionTypes_offset;
669 static int _slot_offset;
670 static int _modifiers_offset;
671 static int _signature_offset;
672 static int _annotations_offset;
673 static int _parameter_annotations_offset;
674 static int _annotation_default_offset;
675
676 static void compute_offsets();
677 public:
678 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
679
680 // Allocation
681 static Handle create(TRAPS);
682
683 // Accessors
684 static oop clazz(oop reflect);
685 static void set_clazz(oop reflect, oop value);
686
687 static void set_name(oop method, oop value);
688
689 static oop return_type(oop method);
690 static void set_return_type(oop method, oop value);
691
692 static oop parameter_types(oop method);
693 static void set_parameter_types(oop method, oop value);
694
695 static int slot(oop reflect);
696 static void set_slot(oop reflect, int value);
697
698 static void set_exception_types(oop method, oop value);
699 static void set_modifiers(oop method, int value);
700 static void set_signature(oop method, oop value);
701 static void set_annotations(oop method, oop value);
702 static void set_parameter_annotations(oop method, oop value);
703 static void set_annotation_default(oop method, oop value);
704
705 // Debugging
706 friend class JavaClasses;
707 };
708
709
710 // Interface to java.lang.reflect.Constructor objects
711
712 class java_lang_reflect_Constructor : 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 _parameterTypes_offset;
718 static int _exceptionTypes_offset;
719 static int _slot_offset;
720 static int _modifiers_offset;
721 static int _signature_offset;
722 static int _annotations_offset;
723 static int _parameter_annotations_offset;
724
725 static void compute_offsets();
726 public:
727 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
728
729 // Allocation
730 static Handle create(TRAPS);
731
732 // Accessors
733 static oop clazz(oop reflect);
734 static void set_clazz(oop reflect, oop value);
735
736 static oop parameter_types(oop constructor);
737 static void set_parameter_types(oop constructor, oop value);
738
739 static int slot(oop reflect);
740 static void set_slot(oop reflect, int value);
741
742 static void set_exception_types(oop constructor, oop value);
743 static void set_modifiers(oop constructor, int value);
744 static void set_signature(oop constructor, oop value);
745 static void set_annotations(oop constructor, oop value);
746 static void set_parameter_annotations(oop method, oop value);
747
748 // Debugging
749 friend class JavaClasses;
750 };
751
752
753 // Interface to java.lang.reflect.Field objects
754
755 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
756 private:
757 // Note that to reduce dependencies on the JDK we compute these
758 // offsets at run-time.
759 static int _clazz_offset;
760 static int _name_offset;
761 static int _type_offset;
762 static int _slot_offset;
763 static int _modifiers_offset;
764 static int _trusted_final_offset;
765 static int _signature_offset;
766 static int _annotations_offset;
767
768 static void compute_offsets();
769
770 public:
771 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
772
773 // Allocation
774 static Handle create(TRAPS);
775
776 // Accessors
777 static oop clazz(oop reflect);
778 static void set_clazz(oop reflect, oop value);
779
780 static oop name(oop field);
781 static void set_name(oop field, oop value);
782
783 static oop type(oop field);
784 static void set_type(oop field, oop value);
785
786 static int slot(oop reflect);
787 static void set_slot(oop reflect, int value);
788
789 static int modifiers(oop field);
790 static void set_modifiers(oop field, int value);
791
792 static void set_trusted_final(oop field);
793
794 static void set_signature(oop constructor, oop value);
795 static void set_annotations(oop constructor, oop value);
796
797 // Debugging
798 friend class JavaClasses;
799 };
800
801 class java_lang_reflect_Parameter {
802 private:
803 // Note that to reduce dependencies on the JDK we compute these
804 // offsets at run-time.
805 static int _name_offset;
806 static int _modifiers_offset;
807 static int _index_offset;
808 static int _executable_offset;
809
810 static void compute_offsets();
811
812 public:
813 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
814
815 // Allocation
816 static Handle create(TRAPS);
817
818 // Accessors
819 static oop name(oop field);
820 static void set_name(oop field, oop value);
821
822 static int index(oop reflect);
823 static void set_index(oop reflect, int value);
824
825 static int modifiers(oop reflect);
826 static void set_modifiers(oop reflect, int value);
827
828 static oop executable(oop constructor);
829 static void set_executable(oop constructor, oop value);
830
831 friend class JavaClasses;
832 };
833
834 #define MODULE_INJECTED_FIELDS(macro) \
835 macro(java_lang_Module, module_entry, intptr_signature, false)
836
837 class java_lang_Module {
838 private:
839 static int _loader_offset;
840 static int _name_offset;
841 static int _module_entry_offset;
842
843 static void compute_offsets();
844
845 public:
846 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
847
848 // Allocation
849 static Handle create(Handle loader, Handle module_name, TRAPS);
850
851 // Testers
852 static bool is_instance(oop obj);
853
854 // Accessors
855 static oop loader(oop module);
856 static void set_loader(oop module, oop value);
857
858 static oop name(oop module);
859 static void set_name(oop module, oop value);
860
861 static ModuleEntry* module_entry(oop module);
862 static ModuleEntry* module_entry_raw(oop module);
863 static void set_module_entry(oop module, ModuleEntry* module_entry);
864
865 friend class JavaClasses;
866 };
867
868 // Interface to jdk.internal.reflect.ConstantPool objects
869 class reflect_ConstantPool {
870 private:
871 // Note that to reduce dependencies on the JDK we compute these
872 // offsets at run-time.
873 static int _oop_offset;
874
875 static void compute_offsets();
876
877 public:
878 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
879
880 // Allocation
881 static Handle create(TRAPS);
882
883 // Accessors
884 static void set_cp(oop reflect, ConstantPool* value);
885 static int oop_offset() { CHECK_INIT(_oop_offset); }
886
887 static ConstantPool* get_cp(oop reflect);
888
889 // Debugging
890 friend class JavaClasses;
891 };
892
893 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
894 class reflect_UnsafeStaticFieldAccessorImpl {
895 private:
896 static int _base_offset;
897 static void compute_offsets();
898
899 public:
900 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
901
902 static int base_offset() { CHECK_INIT(_base_offset); }
903
904 // Debugging
905 friend class JavaClasses;
906 };
907
908 // Interface to java.lang primitive type boxing objects:
909 // - java.lang.Boolean
910 // - java.lang.Character
911 // - java.lang.Float
912 // - java.lang.Double
913 // - java.lang.Byte
914 // - java.lang.Short
915 // - java.lang.Integer
916 // - java.lang.Long
917
918 // This could be separated out into 8 individual classes.
919
920 class java_lang_boxing_object: AllStatic {
921 private:
922 static int _value_offset;
923 static int _long_value_offset;
924
925 static void compute_offsets();
926 static oop initialize_and_allocate(BasicType type, TRAPS);
927 public:
928 // Allocation. Returns a boxed value, or NULL for invalid type.
929 static oop create(BasicType type, jvalue* value, TRAPS);
930 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
931 static BasicType get_value(oop box, jvalue* value);
932 static BasicType set_value(oop box, jvalue* value);
933 static BasicType basic_type(oop box);
934 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
935 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
936 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
937 static void print(BasicType type, jvalue* value, outputStream* st);
938
939 static int value_offset(BasicType type) {
940 return is_double_word_type(type) ? _long_value_offset : _value_offset;
941 }
942
943 static void serialize_offsets(SerializeClosure* f);
944
945 // Debugging
946 friend class JavaClasses;
947 };
948
949
950
951 // Interface to java.lang.ref.Reference objects
952
953 class java_lang_ref_Reference: AllStatic {
954 static int _referent_offset;
955 static int _queue_offset;
956 static int _next_offset;
957 static int _discovered_offset;
958
959 static bool _offsets_initialized;
960
961 public:
962 // Accessors
963 static inline oop weak_referent_no_keepalive(oop ref);
964 static inline oop weak_referent(oop ref);
965 static inline oop phantom_referent_no_keepalive(oop ref);
966 static inline oop unknown_referent_no_keepalive(oop ref);
967 static inline void clear_referent(oop ref);
968 static inline void clear_referent_raw(oop ref);
969 static inline HeapWord* referent_addr_raw(oop ref);
970 static inline oop next(oop ref);
971 static inline void set_next(oop ref, oop value);
972 static inline void set_next_raw(oop ref, oop value);
973 static inline HeapWord* next_addr_raw(oop ref);
974 static inline oop discovered(oop ref);
975 static inline void set_discovered(oop ref, oop value);
976 static inline void set_discovered_raw(oop ref, oop value);
977 static inline HeapWord* discovered_addr_raw(oop ref);
978 static bool is_referent_field(oop obj, ptrdiff_t offset);
979 static inline bool is_final(oop ref);
980 static inline bool is_phantom(oop ref);
981 static inline bool is_weak(oop ref);
982 static inline bool is_soft(oop ref);
983
984 static int referent_offset() { CHECK_INIT(_referent_offset); }
985 static int queue_offset() { CHECK_INIT(_queue_offset); }
986 static int next_offset() { CHECK_INIT(_next_offset); }
987 static int discovered_offset() { CHECK_INIT(_discovered_offset); }
988
989 static void compute_offsets();
990 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
991 };
992
993
994 // Interface to java.lang.ref.SoftReference objects
995
996 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
997 static int _timestamp_offset;
998 static int _static_clock_offset;
999
1000 public:
1001 // Accessors
1002 static jlong timestamp(oop ref);
1003
1004 // Accessors for statics
1005 static jlong clock();
1006 static void set_clock(jlong value);
1007
1008 static void compute_offsets();
1009 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1010 };
1011
1012 // Interface to java.lang.invoke.MethodHandle objects
1013
1014 class java_lang_invoke_MethodHandle: AllStatic {
1015 friend class JavaClasses;
1016
1017 private:
1018 static int _type_offset; // the MethodType of this MH
1019 static int _form_offset; // the LambdaForm of this MH
1020
1021 static void compute_offsets();
1022
1023 public:
1024 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1025
1026 // Accessors
1027 static oop type(oop mh);
1028 static void set_type(oop mh, oop mtype);
1029
1030 static oop form(oop mh);
1031 static void set_form(oop mh, oop lform);
1032
1033 // Testers
1034 static bool is_subclass(Klass* klass) {
1035 return klass->is_subclass_of(vmClasses::MethodHandle_klass());
1036 }
1037 static bool is_instance(oop obj);
1038
1039 // Accessors for code generation:
1040 static int type_offset() { CHECK_INIT(_type_offset); }
1041 static int form_offset() { CHECK_INIT(_form_offset); }
1042 };
1043
1044 // Interface to java.lang.invoke.DirectMethodHandle objects
1045
1046 class java_lang_invoke_DirectMethodHandle: AllStatic {
1047 friend class JavaClasses;
1048
1049 private:
1050 static int _member_offset; // the MemberName of this DMH
1051
1052 static void compute_offsets();
1053
1054 public:
1055 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1056
1057 // Accessors
1058 static oop member(oop mh);
1059
1060 // Testers
1061 static bool is_subclass(Klass* klass) {
1062 return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass());
1063 }
1064 static bool is_instance(oop obj);
1065
1066 // Accessors for code generation:
1067 static int member_offset() { CHECK_INIT(_member_offset); }
1068 };
1069
1070 // Interface to java.lang.invoke.LambdaForm objects
1071 // (These are a private interface for managing adapter code generation.)
1072
1073 class java_lang_invoke_LambdaForm: AllStatic {
1074 friend class JavaClasses;
1075
1076 private:
1077 static int _vmentry_offset; // type is MemberName
1078
1079 static void compute_offsets();
1080
1081 public:
1082 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1083
1084 // Accessors
1085 static oop vmentry(oop lform);
1086
1087 // Testers
1088 static bool is_subclass(Klass* klass) {
1089 return vmClasses::LambdaForm_klass() != NULL &&
1090 klass->is_subclass_of(vmClasses::LambdaForm_klass());
1091 }
1092 static bool is_instance(oop obj);
1093
1094 // Accessors for code generation:
1095 static int vmentry_offset() { CHECK_INIT(_vmentry_offset); }
1096 };
1097
1098 // Interface to java.lang.invoke.NativeEntryPoint objects
1099 // (These are a private interface for managing adapter code generation.)
1100
1101 class jdk_internal_foreign_abi_NativeEntryPoint: AllStatic {
1102 friend class JavaClasses;
1103
1104 private:
1105 static int _method_type_offset;
1106 static int _downcall_stub_address_offset;
1107
1108 static void compute_offsets();
1109
1110 public:
1111 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1112
1113 // Accessors
1114 static oop method_type(oop entry);
1115 static jlong downcall_stub_address(oop entry);
1116
1117 // Testers
1118 static bool is_subclass(Klass* klass) {
1119 return vmClasses::NativeEntryPoint_klass() != NULL &&
1120 klass->is_subclass_of(vmClasses::NativeEntryPoint_klass());
1121 }
1122 static bool is_instance(oop obj);
1123
1124 // Accessors for code generation:
1125 static int method_type_offset_in_bytes() { return _method_type_offset; }
1126 static int downcall_stub_address_offset_in_bytes() { return _downcall_stub_address_offset; }
1127 };
1128
1129 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic {
1130 friend class JavaClasses;
1131
1132 private:
1133 static int _inputStorage_offset;
1134 static int _outputStorage_offset;
1135 static int _volatileStorage_offset;
1136 static int _stackAlignment_offset;
1137 static int _shadowSpace_offset;
1138 static int _scratch1_offset;
1139 static int _scratch2_offset;
1140
1141 static void compute_offsets();
1142
1143 public:
1144 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1145
1146 // Accessors
1147 static objArrayOop inputStorage(oop entry);
1148 static objArrayOop outputStorage(oop entry);
1149 static objArrayOop volatileStorage(oop entry);
1150 static jint stackAlignment(oop entry);
1151 static jint shadowSpace(oop entry);
1152 static oop scratch1(oop entry);
1153 static oop scratch2(oop entry);
1154
1155 // Testers
1156 static bool is_subclass(Klass* klass) {
1157 return vmClasses::ABIDescriptor_klass() != NULL &&
1158 klass->is_subclass_of(vmClasses::ABIDescriptor_klass());
1159 }
1160 static bool is_instance(oop obj);
1161 };
1162
1163 class jdk_internal_foreign_abi_VMStorage: AllStatic {
1164 friend class JavaClasses;
1165
1166 private:
1167 static int _type_offset;
1168 static int _indexOrOffset_offset;
1169 static int _segmentMaskOrSize_offset;
1170 static int _debugName_offset;
1171
1172 static void compute_offsets();
1173
1174 public:
1175 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1176
1177 // Accessors
1178 static jbyte type(oop entry);
1179 static jint index_or_offset(oop entry);
1180 static jshort segment_mask_or_size(oop entry);
1181 static oop debugName(oop entry);
1182
1183 // Testers
1184 static bool is_subclass(Klass* klass) {
1185 return vmClasses::VMStorage_klass() != NULL &&
1186 klass->is_subclass_of(vmClasses::VMStorage_klass());
1187 }
1188 static bool is_instance(oop obj);
1189 };
1190
1191 class jdk_internal_foreign_abi_CallConv: AllStatic {
1192 friend class JavaClasses;
1193
1194 private:
1195 static int _argRegs_offset;
1196 static int _retRegs_offset;
1197
1198 static void compute_offsets();
1199
1200 public:
1201 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1202
1203 // Accessors
1204 static objArrayOop argRegs(oop entry);
1205 static objArrayOop retRegs(oop entry);
1206
1207 // Testers
1208 static bool is_subclass(Klass* klass) {
1209 return vmClasses::CallConv_klass() != NULL &&
1210 klass->is_subclass_of(vmClasses::CallConv_klass());
1211 }
1212 static bool is_instance(oop obj);
1213 };
1214
1215 // Interface to java.lang.invoke.MemberName objects
1216 // (These are a private interface for Java code to query the class hierarchy.)
1217
1218 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1219 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1220 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1221
1222 class java_lang_invoke_ResolvedMethodName : AllStatic {
1223 friend class JavaClasses;
1224
1225 static int _vmtarget_offset;
1226 static int _vmholder_offset;
1227
1228 static void compute_offsets();
1229 public:
1230 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1231
1232 static int vmtarget_offset() { CHECK_INIT(_vmtarget_offset); }
1233
1234 static Method* vmtarget(oop resolved_method);
1235 static void set_vmtarget(oop resolved_method, Method* method);
1236
1237 static void set_vmholder(oop resolved_method, oop holder);
1238
1239 // find or create resolved member name
1240 static oop find_resolved_method(const methodHandle& m, TRAPS);
1241
1242 static bool is_instance(oop resolved_method);
1243 };
1244
1245
1246 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1247 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1248
1249
1250 class java_lang_invoke_MemberName: AllStatic {
1251 friend class JavaClasses;
1252
1253 private:
1254 // From java.lang.invoke.MemberName:
1255 // private Class<?> clazz; // class in which the method is defined
1256 // private String name; // may be null if not yet materialized
1257 // private Object type; // may be null if not yet materialized
1258 // private int flags; // modifier bits; see reflect.Modifier
1259 // private ResolvedMethodName method; // holds VM-specific target value
1260 // private intptr_t vmindex; // member index within class or interface
1261 static int _clazz_offset;
1262 static int _name_offset;
1263 static int _type_offset;
1264 static int _flags_offset;
1265 static int _method_offset;
1266 static int _vmindex_offset;
1267
1268 static void compute_offsets();
1269
1270 public:
1271 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1272 // Accessors
1273 static oop clazz(oop mname);
1274 static void set_clazz(oop mname, oop clazz);
1275
1276 static oop type(oop mname);
1277 static void set_type(oop mname, oop type);
1278
1279 static oop name(oop mname);
1280 static void set_name(oop mname, oop name);
1281
1282 static int flags(oop mname);
1283 static void set_flags(oop mname, int flags);
1284
1285 // Link through ResolvedMethodName field to get Method*
1286 static Method* vmtarget(oop mname);
1287 static void set_method(oop mname, oop method);
1288
1289 static intptr_t vmindex(oop mname);
1290 static void set_vmindex(oop mname, intptr_t index);
1291
1292 // Testers
1293 static bool is_subclass(Klass* klass) {
1294 return klass->is_subclass_of(vmClasses::MemberName_klass());
1295 }
1296 static bool is_instance(oop obj);
1297
1298 static bool is_method(oop obj);
1299
1300 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1301 enum {
1302 MN_IS_METHOD = 0x00010000, // method (not constructor)
1303 MN_IS_OBJECT_CONSTRUCTOR = 0x00020000, // constructor
1304 MN_IS_FIELD = 0x00040000, // field
1305 MN_IS_TYPE = 0x00080000, // nested type
1306 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1307 MN_TRUSTED_FINAL = 0x00200000, // trusted final field
1308 MN_FLATTENED = 0x00400000, // flattened field
1309 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1310 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1311 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1312 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1313 MN_SEARCH_INTERFACES = 0x00200000, // walk implemented interfaces
1314 MN_NESTMATE_CLASS = 0x00000001,
1315 MN_HIDDEN_CLASS = 0x00000002,
1316 MN_STRONG_LOADER_LINK = 0x00000004,
1317 MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1318 // Lookup modes
1319 MN_MODULE_MODE = 0x00000010,
1320 MN_UNCONDITIONAL_MODE = 0x00000020,
1321 MN_TRUSTED_MODE = -1
1322 };
1323
1324 // Accessors for code generation:
1325 static int clazz_offset() { CHECK_INIT(_clazz_offset); }
1326 static int type_offset() { CHECK_INIT(_type_offset); }
1327 static int flags_offset() { CHECK_INIT(_flags_offset); }
1328 static int method_offset() { CHECK_INIT(_method_offset); }
1329 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1330 };
1331
1332
1333 // Interface to java.lang.invoke.MethodType objects
1334
1335 class java_lang_invoke_MethodType: AllStatic {
1336 friend class JavaClasses;
1337
1338 private:
1339 static int _rtype_offset;
1340 static int _ptypes_offset;
1341
1342 static void compute_offsets();
1343
1344 public:
1345 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1346 // Accessors
1347 static oop rtype(oop mt);
1348 static objArrayOop ptypes(oop mt);
1349
1350 static oop ptype(oop mt, int index);
1351 static int ptype_count(oop mt);
1352
1353 static int ptype_slot_count(oop mt); // extra counts for long/double
1354 static int rtype_slot_count(oop mt); // extra counts for long/double
1355
1356 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1357 static void print_signature(oop mt, outputStream* st);
1358
1359 static bool is_instance(oop obj);
1360
1361 static bool equals(oop mt1, oop mt2);
1362
1363 // Accessors for code generation:
1364 static int rtype_offset() { CHECK_INIT(_rtype_offset); }
1365 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); }
1366 };
1367
1368
1369 // Interface to java.lang.invoke.CallSite objects
1370
1371 class java_lang_invoke_CallSite: AllStatic {
1372 friend class JavaClasses;
1373
1374 private:
1375 static int _target_offset;
1376 static int _context_offset;
1377
1378 static void compute_offsets();
1379
1380 public:
1381 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1382 // Accessors
1383 static oop target( oop site);
1384 static void set_target( oop site, oop target);
1385 static void set_target_volatile( oop site, oop target);
1386
1387 static oop context_no_keepalive(oop site);
1388
1389 // Testers
1390 static bool is_subclass(Klass* klass) {
1391 return klass->is_subclass_of(vmClasses::CallSite_klass());
1392 }
1393 static bool is_instance(oop obj);
1394
1395 // Accessors for code generation:
1396 static int target_offset() { CHECK_INIT(_target_offset); }
1397 static int context_offset() { CHECK_INIT(_context_offset); }
1398 };
1399
1400 // Interface to java.lang.invoke.ConstantCallSite objects
1401
1402 class java_lang_invoke_ConstantCallSite: AllStatic {
1403 friend class JavaClasses;
1404
1405 private:
1406 static int _is_frozen_offset;
1407
1408 static void compute_offsets();
1409
1410 public:
1411 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1412 // Accessors
1413 static jboolean is_frozen(oop site);
1414
1415 // Testers
1416 static bool is_subclass(Klass* klass) {
1417 return klass->is_subclass_of(vmClasses::ConstantCallSite_klass());
1418 }
1419 static bool is_instance(oop obj);
1420 };
1421
1422 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1423
1424 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1425 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1426 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1427
1428 class DependencyContext;
1429
1430 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1431 friend class JavaClasses;
1432
1433 private:
1434 static int _vmdependencies_offset;
1435 static int _last_cleanup_offset;
1436
1437 static void compute_offsets();
1438
1439 public:
1440 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1441 // Accessors
1442 static DependencyContext vmdependencies(oop context);
1443
1444 // Testers
1445 static bool is_subclass(Klass* klass) {
1446 return klass->is_subclass_of(vmClasses::Context_klass());
1447 }
1448 static bool is_instance(oop obj);
1449 };
1450
1451 // Interface to java.security.AccessControlContext objects
1452
1453 class java_security_AccessControlContext: AllStatic {
1454 private:
1455 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1456 // so we compute the offsets at startup rather than hard-wiring them.
1457 static int _context_offset;
1458 static int _privilegedContext_offset;
1459 static int _isPrivileged_offset;
1460 static int _isAuthorized_offset;
1461
1462 static void compute_offsets();
1463 public:
1464 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1465 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1466
1467 // Debugging/initialization
1468 friend class JavaClasses;
1469 };
1470
1471
1472 // Interface to java.lang.ClassLoader objects
1473
1474 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1475 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1476
1477 class java_lang_ClassLoader : AllStatic {
1478 private:
1479 static int _loader_data_offset;
1480 static int _parent_offset;
1481 static int _parallelCapable_offset;
1482 static int _name_offset;
1483 static int _nameAndId_offset;
1484 static int _unnamedModule_offset;
1485
1486 static void compute_offsets();
1487
1488 public:
1489 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1490
1491 static ClassLoaderData* loader_data_acquire(oop loader);
1492 static ClassLoaderData* loader_data(oop loader);
1493 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1494
1495 static oop parent(oop loader);
1496 static oop parent_no_keepalive(oop loader);
1497 static oop name(oop loader);
1498 static oop nameAndId(oop loader);
1499 static bool isAncestor(oop loader, oop cl);
1500
1501 // Support for parallelCapable field
1502 static bool parallelCapable(oop the_class_mirror);
1503
1504 static bool is_trusted_loader(oop loader);
1505
1506 // Return true if this is one of the class loaders associated with
1507 // the generated bytecodes for reflection.
1508 static bool is_reflection_class_loader(oop loader);
1509
1510 // Fix for 4474172
1511 static oop non_reflection_class_loader(oop loader);
1512
1513 // Testers
1514 static bool is_subclass(Klass* klass) {
1515 return klass->is_subclass_of(vmClasses::ClassLoader_klass());
1516 }
1517 static bool is_instance(oop obj);
1518
1519 static oop unnamedModule(oop loader);
1520
1521 // Debugging
1522 friend class JavaClasses;
1523 };
1524
1525
1526 // Interface to java.lang.System objects
1527
1528 class java_lang_System : AllStatic {
1529 private:
1530 static int _static_in_offset;
1531 static int _static_out_offset;
1532 static int _static_err_offset;
1533 static int _static_security_offset;
1534 static int _static_allow_security_offset;
1535 static int _static_never_offset;
1536
1537 public:
1538 static int in_offset() { CHECK_INIT(_static_in_offset); }
1539 static int out_offset() { CHECK_INIT(_static_out_offset); }
1540 static int err_offset() { CHECK_INIT(_static_err_offset); }
1541 static bool allow_security_manager();
1542 static bool has_security_manager();
1543
1544 static void compute_offsets();
1545 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1546
1547 // Debugging
1548 friend class JavaClasses;
1549 };
1550
1551
1552 // Interface to java.lang.StackTraceElement objects
1553
1554 class java_lang_StackTraceElement: AllStatic {
1555 private:
1556 static int _declaringClassObject_offset;
1557 static int _classLoaderName_offset;
1558 static int _moduleName_offset;
1559 static int _moduleVersion_offset;
1560 static int _declaringClass_offset;
1561 static int _methodName_offset;
1562 static int _fileName_offset;
1563 static int _lineNumber_offset;
1564
1565 // Setters
1566 static void set_classLoaderName(oop element, oop value);
1567 static void set_moduleName(oop element, oop value);
1568 static void set_moduleVersion(oop element, oop value);
1569 static void set_declaringClass(oop element, oop value);
1570 static void set_methodName(oop element, oop value);
1571 static void set_fileName(oop element, oop value);
1572 static void set_lineNumber(oop element, int value);
1573 static void set_declaringClassObject(oop element, oop value);
1574
1575 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1576 const methodHandle& method, int bci,
1577 Symbol*& source, oop& source_file, int& line_number, TRAPS);
1578
1579 public:
1580 // Create an instance of StackTraceElement
1581 static oop create(const methodHandle& method, int bci, TRAPS);
1582
1583 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1584 int version, int bci, Symbol* name, TRAPS);
1585
1586 static void compute_offsets();
1587 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1588
1589 #if INCLUDE_JVMCI
1590 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1591 #endif
1592
1593 // Debugging
1594 friend class JavaClasses;
1595 };
1596
1597
1598 class Backtrace: AllStatic {
1599 public:
1600 // Helper backtrace functions to store bci|version together.
1601 static int merge_bci_and_version(int bci, int version);
1602 static int merge_mid_and_cpref(int mid, int cpref);
1603 static int bci_at(unsigned int merged);
1604 static int version_at(unsigned int merged);
1605 static int mid_at(unsigned int merged);
1606 static int cpref_at(unsigned int merged);
1607 static int get_line_number(Method* method, int bci);
1608 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1609
1610 // Debugging
1611 friend class JavaClasses;
1612 };
1613
1614 // Interface to java.lang.StackFrameInfo objects
1615
1616 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1617 macro(java_lang_StackFrameInfo, version, short_signature, false)
1618
1619 class java_lang_StackFrameInfo: AllStatic {
1620 private:
1621 static int _memberName_offset;
1622 static int _bci_offset;
1623 static int _version_offset;
1624 static int _contScope_offset;
1625
1626 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1627
1628 public:
1629 // Setters
1630 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS);
1631 static void set_bci(oop info, int value);
1632
1633 static void set_version(oop info, short value);
1634 static void set_contScope(oop info, oop value);
1635
1636 static void compute_offsets();
1637 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1638
1639 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1640
1641 // Debugging
1642 friend class JavaClasses;
1643 };
1644
1645 class java_lang_LiveStackFrameInfo: AllStatic {
1646 private:
1647 static int _monitors_offset;
1648 static int _locals_offset;
1649 static int _operands_offset;
1650 static int _mode_offset;
1651
1652 public:
1653 static void set_monitors(oop info, oop value);
1654 static void set_locals(oop info, oop value);
1655 static void set_operands(oop info, oop value);
1656 static void set_mode(oop info, int value);
1657
1658 static void compute_offsets();
1659 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1660
1661 // Debugging
1662 friend class JavaClasses;
1663 };
1664
1665 // Interface to java.lang.reflect.RecordComponent objects
1666
1667 class java_lang_reflect_RecordComponent: AllStatic {
1668 private:
1669 static int _clazz_offset;
1670 static int _name_offset;
1671 static int _type_offset;
1672 static int _accessor_offset;
1673 static int _signature_offset;
1674 static int _annotations_offset;
1675 static int _typeAnnotations_offset;
1676
1677 // Setters
1678 static void set_clazz(oop element, oop value);
1679 static void set_name(oop element, oop value);
1680 static void set_type(oop element, oop value);
1681 static void set_accessor(oop element, oop value);
1682 static void set_signature(oop element, oop value);
1683 static void set_annotations(oop element, oop value);
1684 static void set_typeAnnotations(oop element, oop value);
1685
1686 public:
1687 // Create an instance of RecordComponent
1688 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1689
1690 static void compute_offsets();
1691 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1692
1693 // Debugging
1694 friend class JavaClasses;
1695 };
1696
1697
1698 // Interface to java.lang.AssertionStatusDirectives objects
1699
1700 class java_lang_AssertionStatusDirectives: AllStatic {
1701 private:
1702 static int _classes_offset;
1703 static int _classEnabled_offset;
1704 static int _packages_offset;
1705 static int _packageEnabled_offset;
1706 static int _deflt_offset;
1707
1708 public:
1709 // Setters
1710 static void set_classes(oop obj, oop val);
1711 static void set_classEnabled(oop obj, oop val);
1712 static void set_packages(oop obj, oop val);
1713 static void set_packageEnabled(oop obj, oop val);
1714 static void set_deflt(oop obj, bool val);
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
1724 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1725 private:
1726 static int _owner_offset;
1727 public:
1728 static void compute_offsets();
1729 static oop get_owner_threadObj(oop obj);
1730 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1731 };
1732
1733 // Interface to jdk.internal.misc.UnsafeConsants
1734
1735 class jdk_internal_misc_UnsafeConstants : AllStatic {
1736 public:
1737 static void set_unsafe_constants();
1738 static void compute_offsets() { }
1739 static void serialize_offsets(SerializeClosure* f) { }
1740 };
1741
1742 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects
1743
1744 class vector_VectorPayload : AllStatic {
1745 private:
1746 static int _payload_offset;
1747 public:
1748 static void set_payload(oop o, oop val);
1749
1750 static void compute_offsets();
1751 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1752
1753 // Testers
1754 static bool is_subclass(Klass* klass) {
1755 return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass());
1756 }
1757 static bool is_instance(oop obj);
1758 };
1759
1760 class java_lang_Integer : AllStatic {
1761 public:
1762 static jint value(oop obj);
1763 };
1764
1765 class java_lang_Long : AllStatic {
1766 public:
1767 static jlong value(oop obj);
1768 };
1769
1770 class java_lang_Character : AllStatic {
1771 public:
1772 static jchar value(oop obj);
1773 };
1774
1775 class java_lang_Short : AllStatic {
1776 public:
1777 static jshort value(oop obj);
1778 };
1779
1780 class java_lang_Byte : AllStatic {
1781 public:
1782 static jbyte value(oop obj);
1783 };
1784
1785 class java_lang_Boolean : AllStatic {
1786 private:
1787 static int _static_TRUE_offset;
1788 static int _static_FALSE_offset;
1789 public:
1790 static Symbol* symbol();
1791 static void compute_offsets(InstanceKlass* k);
1792 static oop get_TRUE(InstanceKlass *k);
1793 static oop get_FALSE(InstanceKlass *k);
1794 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1795 static jboolean value(oop obj);
1796 };
1797
1798 class java_lang_Integer_IntegerCache : AllStatic {
1799 private:
1800 static int _static_cache_offset;
1801 public:
1802 static Symbol* symbol();
1803 static void compute_offsets(InstanceKlass* k);
1804 static objArrayOop cache(InstanceKlass *k);
1805 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1806 };
1807
1808 class java_lang_Long_LongCache : AllStatic {
1809 private:
1810 static int _static_cache_offset;
1811 public:
1812 static Symbol* symbol();
1813 static void compute_offsets(InstanceKlass* k);
1814 static objArrayOop cache(InstanceKlass *k);
1815 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1816 };
1817
1818 class java_lang_Character_CharacterCache : AllStatic {
1819 private:
1820 static int _static_cache_offset;
1821 public:
1822 static Symbol* symbol();
1823 static void compute_offsets(InstanceKlass* k);
1824 static objArrayOop cache(InstanceKlass *k);
1825 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1826 };
1827
1828 class java_lang_Short_ShortCache : AllStatic {
1829 private:
1830 static int _static_cache_offset;
1831 public:
1832 static Symbol* symbol();
1833 static void compute_offsets(InstanceKlass* k);
1834 static objArrayOop cache(InstanceKlass *k);
1835 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1836 };
1837
1838 class java_lang_Byte_ByteCache : AllStatic {
1839 private:
1840 static int _static_cache_offset;
1841 public:
1842 static Symbol* symbol();
1843 static void compute_offsets(InstanceKlass* k);
1844 static objArrayOop cache(InstanceKlass *k);
1845 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1846 };
1847
1848 // Interface to java.lang.InternalError objects
1849
1850 #define INTERNALERROR_INJECTED_FIELDS(macro) \
1851 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1852
1853 class java_lang_InternalError : AllStatic {
1854 private:
1855 static int _during_unsafe_access_offset;
1856 public:
1857 static jboolean during_unsafe_access(oop internal_error);
1858 static void set_during_unsafe_access(oop internal_error);
1859 static void compute_offsets();
1860 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1861 };
1862
1863 // Use to declare fields that need to be injected into Java classes
1864 // for the JVM to use. The name_index and signature_index are
1865 // declared in vmSymbols. The may_be_java flag is used to declare
1866 // fields that might already exist in Java but should be injected if
1867 // they don't. Otherwise the field is unconditionally injected and
1868 // the JVM uses the injected one. This is to ensure that name
1869 // collisions don't occur. In general may_be_java should be false
1870 // unless there's a good reason.
1871
1872 class InjectedField {
1873 public:
1874 const vmClassID klass_id;
1875 const vmSymbolID name_index;
1876 const vmSymbolID signature_index;
1877 const bool may_be_java;
1878
1879
1880 Klass* klass() const { return vmClasses::klass_at(klass_id); }
1881 Symbol* name() const { return lookup_symbol(name_index); }
1882 Symbol* signature() const { return lookup_symbol(signature_index); }
1883
1884 int compute_offset();
1885
1886 // Find the Symbol for this index
1887 static Symbol* lookup_symbol(vmSymbolID symbol_index) {
1888 return Symbol::vm_symbol_at(symbol_index);
1889 }
1890 };
1891
1892
1893 // Interface to hard-coded offset checking
1894
1895 enum class InjectedFieldID : int;
1896
1897 class JavaClasses : AllStatic {
1898 private:
1899
1900 static InjectedField _injected_fields[];
1901
1902 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1903 public:
1904
1905 static int compute_injected_offset(InjectedFieldID id);
1906
1907 static void compute_offsets();
1908 static void check_offsets() PRODUCT_RETURN;
1909 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1910 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1911 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1912
1913 static void compute_offset(int &dest_offset,
1914 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
1915 bool is_static = false);
1916 static void compute_offset(int& dest_offset, InstanceKlass* ik,
1917 const char* name_string, Symbol* signature_symbol,
1918 bool is_static = false);
1919 };
1920
1921 #undef CHECK_INIT
1922
1923 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP