1 /*
2 * Copyright (c) 1997, 2023, 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 int utf8_length(oop java_string);
135 static int utf8_length(oop java_string, typeArrayOop string_value);
136
137 // String converters
138 static char* as_utf8_string(oop java_string);
139 static char* as_utf8_string(oop java_string, int& length);
140 static char* as_utf8_string_full(oop java_string, char* buf, int buflen, int& length);
141 static char* as_utf8_string(oop java_string, char* buf, int buflen);
142 static char* as_utf8_string(oop java_string, int start, int len);
143 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
144 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
145 static char* as_platform_dependent_str(Handle java_string, TRAPS);
146 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
147 static jchar* as_unicode_string_or_null(oop java_string, int& length);
148 // produce an ascii string with all other values quoted using \u####
149 static char* as_quoted_ascii(oop java_string);
150
151 // Compute the hash value for a java.lang.String object which would
152 // contain the characters passed in.
153 //
154 // As the hash value used by the String object itself, in
155 // String.hashCode(). This value is normally calculated in Java code
156 // in the String.hashCode method(), but is precomputed for String
157 // objects in the shared archive file.
158 // hash P(31) from Kernighan & Ritchie
159 //
160 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
161 static unsigned int hash_code(const jchar* s, int len) {
162 unsigned int h = 0;
163 while (len-- > 0) {
164 h = 31*h + (unsigned int) *s;
165 s++;
166 }
167 return h;
168 }
169
170 static unsigned int hash_code(const jbyte* s, int len) {
171 unsigned int h = 0;
172 while (len-- > 0) {
173 h = 31*h + (((unsigned int) *s) & 0xFF);
174 s++;
175 }
176 return h;
177 }
178
179 static unsigned int hash_code(oop java_string);
180 static unsigned int hash_code_noupdate(oop java_string);
181
182 static bool equals(oop java_string, const jchar* chars, int len);
183 static bool equals(oop str1, oop str2);
184 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
185
186 // Conversion between '.' and '/' formats, and allocate a String from the result.
187 static Handle externalize_classname(Symbol* java_name, TRAPS);
188
189 // Conversion
190 static Symbol* as_symbol(oop java_string);
191 static Symbol* as_symbol_or_null(oop java_string);
192
193 // Tester
194 static inline bool is_instance(oop obj);
195
196 // Debugging
197 static void print(oop java_string, outputStream* st);
198 friend class JavaClasses;
199 friend class StringTable;
200 };
201
202
203 // Interface to java.lang.Class objects
204
205 #define CLASS_INJECTED_FIELDS(macro) \
206 macro(java_lang_Class, klass, intptr_signature, false) \
207 macro(java_lang_Class, array_klass, intptr_signature, false) \
208 macro(java_lang_Class, oop_size, int_signature, false) \
209 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
210 macro(java_lang_Class, protection_domain, object_signature, false) \
211 macro(java_lang_Class, signers, object_signature, false) \
212 macro(java_lang_Class, source_file, object_signature, false) \
213
214 class java_lang_Class : AllStatic {
215 friend class VMStructs;
216 friend class JVMCIVMStructs;
217
218 private:
219
220 // The fake offsets are added by the class loader when java.lang.Class is loaded
221
222 static int _klass_offset;
223 static int _array_klass_offset;
224
225 static int _oop_size_offset;
226 static int _static_oop_field_count_offset;
227
228 static int _protection_domain_offset;
229 static int _signers_offset;
230 static int _class_loader_offset;
231 static int _module_offset;
232 static int _component_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
248 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
249 Handle classData, TRAPS);
250 static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
251 public:
252 static void allocate_fixup_lists();
253 static void compute_offsets();
254
255 // Instance creation
256 static void allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
257 Handle& mirror, Handle& comp_mirror, TRAPS); // returns mirror and comp_mirror
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
263 // Archiving
264 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
265 static void create_scratch_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
266 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
267 Handle protection_domain,
268 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
269
270 static void fixup_module_field(Klass* k, Handle module);
271
272 // Conversion
273 static Klass* as_Klass(oop java_class);
274 static void set_klass(oop java_class, Klass* klass);
275 static BasicType as_BasicType(oop java_class, Klass** reference_klass = nullptr);
276 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
277 static void print_signature(oop java_class, outputStream *st);
278 static const char* as_external_name(oop java_class);
279 // Testing
280 static bool is_instance(oop obj);
281
282 static bool is_primitive(oop java_class);
283 static BasicType primitive_type(oop java_class);
284 static oop primitive_mirror(BasicType t);
285 // JVM_NewArray support
286 static Klass* array_klass_acquire(oop java_class);
287 static void release_set_array_klass(oop java_class, Klass* klass);
288 // compiler support for class operations
289 static int klass_offset() { CHECK_INIT(_klass_offset); }
290 static int array_klass_offset() { CHECK_INIT(_array_klass_offset); }
291 static int component_mirror_offset() { CHECK_INIT(_component_mirror_offset); }
292
293 // Support for classRedefinedCount field
294 static int classRedefinedCount(oop the_class_mirror);
295 static void set_classRedefinedCount(oop the_class_mirror, int value);
296
297 // Support for embedded per-class oops
298 static oop protection_domain(oop java_class);
299 static oop component_mirror(oop java_class);
300
301 static objArrayOop signers(oop java_class);
302 static void set_signers(oop java_class, objArrayOop signers);
303 static oop class_data(oop java_class);
304 static void set_class_data(oop java_class, oop classData);
305
306 static oop class_loader(oop java_class);
307 static void set_module(oop java_class, oop module);
308 static oop module(oop java_class);
309
310 static oop name(Handle java_class, TRAPS);
311
312 static oop source_file(oop java_class);
313 static void set_source_file(oop java_class, oop source_file);
314
315 static size_t oop_size(oop java_class);
316 static void set_oop_size(HeapWord* java_class, size_t size);
317 static int static_oop_field_count(oop java_class);
318 static void set_static_oop_field_count(oop java_class, int size);
319
320 static GrowableArray<Klass*>* fixup_mirror_list() {
321 return _fixup_mirror_list;
322 }
323 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
324 _fixup_mirror_list = v;
325 }
326
327 static GrowableArray<Klass*>* fixup_module_field_list() {
328 return _fixup_module_field_list;
329 }
330 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
331 _fixup_module_field_list = v;
332 }
333
334 // Debugging
335 friend class JavaClasses;
336 };
337
338 // Interface to java.lang.Thread objects
339
340 #define THREAD_INJECTED_FIELDS(macro) \
341 macro(java_lang_Thread, jvmti_thread_state, intptr_signature, false) \
342 macro(java_lang_Thread, jvmti_VTMS_transition_disable_count, int_signature, false) \
343 macro(java_lang_Thread, jvmti_is_in_VTMS_transition, bool_signature, false) \
344 JFR_ONLY(macro(java_lang_Thread, jfr_epoch, short_signature, false))
345
346 class java_lang_Thread : AllStatic {
347 friend class java_lang_VirtualThread;
348 friend class JVMCIVMStructs;
349 private:
350 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
351 // so we compute the offsets at startup rather than hard-wiring them.
352 static int _holder_offset;
353 static int _name_offset;
354 static int _contextClassLoader_offset;
355 static int _inheritedAccessControlContext_offset;
356 static int _eetop_offset;
357 static int _jvmti_thread_state_offset;
358 static int _jvmti_VTMS_transition_disable_count_offset;
359 static int _jvmti_is_in_VTMS_transition_offset;
360 static int _interrupted_offset;
361 static int _tid_offset;
362 static int _continuation_offset;
363 static int _park_blocker_offset;
364 static int _scopedValueBindings_offset;
365 JFR_ONLY(static int _jfr_epoch_offset;)
366
367 static void compute_offsets();
368
369 public:
370 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
371
372 // Returns the JavaThread associated with the thread obj
373 static JavaThread* thread(oop java_thread);
374 static JavaThread* thread_acquire(oop java_thread);
375 // Set JavaThread for instance
376 static void set_thread(oop java_thread, JavaThread* thread);
377 static void release_set_thread(oop java_thread, JavaThread* thread);
378 // FieldHolder
379 static oop holder(oop java_thread);
380 // Interrupted status
381 static bool interrupted(oop java_thread);
382 static void set_interrupted(oop java_thread, bool val);
383 // Name
384 static oop name(oop java_thread);
385 static void set_name(oop java_thread, oop name);
386 // Priority
387 static ThreadPriority priority(oop java_thread);
388 static void set_priority(oop java_thread, ThreadPriority priority);
389 // Thread group
390 static oop threadGroup(oop java_thread);
391 // Alive (NOTE: this is not really a field, but provides the correct
392 // definition without doing a Java call)
393 static bool is_alive(oop java_thread);
394 // Daemon
395 static bool is_daemon(oop java_thread);
396 static void set_daemon(oop java_thread);
397 // Context ClassLoader
398 static oop context_class_loader(oop java_thread);
399 // Control context
400 static oop inherited_access_control_context(oop java_thread);
401 // Stack size hint
402 static jlong stackSize(oop java_thread);
403 // Thread ID
404 static int64_t thread_id(oop java_thread);
405 static ByteSize thread_id_offset();
406 // Continuation
407 static inline oop continuation(oop java_thread);
408
409 static JvmtiThreadState* jvmti_thread_state(oop java_thread);
410 static void set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state);
411 static int VTMS_transition_disable_count(oop java_thread);
412 static void inc_VTMS_transition_disable_count(oop java_thread);
413 static void dec_VTMS_transition_disable_count(oop java_thread);
414 static bool is_in_VTMS_transition(oop java_thread);
415 static void set_is_in_VTMS_transition(oop java_thread, bool val);
416 static int is_in_VTMS_transition_offset();
417
418 // Clear all scoped value bindings on error
419 static void clear_scopedValueBindings(oop java_thread);
420
421 // Blocker object responsible for thread parking
422 static oop park_blocker(oop java_thread);
423
424 // Write thread status info to threadStatus field of java.lang.Thread.
425 static void set_thread_status(oop java_thread_oop, JavaThreadStatus status);
426 // Read thread status info from threadStatus field of java.lang.Thread.
427 static JavaThreadStatus get_thread_status(oop java_thread_oop);
428
429 static const char* thread_status_name(oop java_thread_oop);
430
431 // Fill in current stack trace, can cause GC
432 static oop async_get_stack_trace(oop java_thread, TRAPS);
433
434 JFR_ONLY(static u2 jfr_epoch(oop java_thread);)
435 JFR_ONLY(static void set_jfr_epoch(oop java_thread, u2 epoch);)
436 JFR_ONLY(static int jfr_epoch_offset() { CHECK_INIT(_jfr_epoch_offset); })
437
438 // Debugging
439 friend class JavaClasses;
440 };
441
442 // Interface to java.lang.Thread$FieldHolder objects
443
444 class java_lang_Thread_FieldHolder : AllStatic {
445 private:
446 static int _group_offset;
447 static int _priority_offset;
448 static int _stackSize_offset;
449 static int _daemon_offset;
450 static int _thread_status_offset;
451
452 static void compute_offsets();
453
454 public:
455 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
456
457 static oop threadGroup(oop holder);
458
459 static ThreadPriority priority(oop holder);
460 static void set_priority(oop holder, ThreadPriority priority);
461
462 static jlong stackSize(oop holder);
463
464 static bool is_daemon(oop holder);
465 static void set_daemon(oop holder, bool val);
466
467 static void set_thread_status(oop holder, JavaThreadStatus status);
468 static JavaThreadStatus get_thread_status(oop holder);
469
470 friend class JavaClasses;
471 };
472
473 // Interface to java.lang.Thread$Constants objects
474
475 class java_lang_Thread_Constants : AllStatic {
476 private:
477 static int _static_VTHREAD_GROUP_offset;
478 static int _static_NOT_SUPPORTED_CLASSLOADER_offset;
479
480 static void compute_offsets();
481 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
482
483 public:
484 static oop get_VTHREAD_GROUP();
485
486 friend class JavaClasses;
487 };
488
489 // Interface to java.lang.ThreadGroup objects
490
491 class java_lang_ThreadGroup : AllStatic {
492 private:
493 static int _parent_offset;
494 static int _name_offset;
495 static int _maxPriority_offset;
496 static int _daemon_offset;
497
498 static void compute_offsets();
499 public:
500 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
501
502 // parent ThreadGroup
503 static oop parent(oop java_thread_group);
504 // name
505 static const char* name(oop java_thread_group);
506 // maxPriority in group
507 static ThreadPriority maxPriority(oop java_thread_group);
508 // Daemon
509 static bool is_daemon(oop java_thread_group);
510
511 // Debugging
512 friend class JavaClasses;
513 };
514
515
516 // Interface to java.lang.VirtualThread objects
517
518 class java_lang_VirtualThread : AllStatic {
519 private:
520 static int static_vthread_scope_offset;
521 static int _carrierThread_offset;
522 static int _continuation_offset;
523 static int _state_offset;
524 JFR_ONLY(static int _jfr_epoch_offset;)
525 public:
526 enum {
527 NEW = 0,
528 STARTED = 1,
529 RUNNING = 2,
530 PARKING = 3,
531 PARKED = 4,
532 PINNED = 5,
533 TIMED_PARKING = 6,
534 TIMED_PARKED = 7,
535 TIMED_PINNED = 8,
536 UNPARKED = 9,
537 YIELDING = 10,
538 YIELDED = 11,
539 TERMINATED = 99,
540
541 // additional state bits
542 SUSPENDED = 1 << 8, // suspended when unmounted
543 };
544
545 static void compute_offsets();
546 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
547
548 // Testers
549 static bool is_subclass(Klass* klass) {
550 return klass->is_subclass_of(vmClasses::VirtualThread_klass());
551 }
552 static bool is_instance(oop obj);
553
554 static oop vthread_scope();
555 static oop carrier_thread(oop vthread);
556 static oop continuation(oop vthread);
557 static int state(oop vthread);
558 static JavaThreadStatus map_state_to_thread_status(int state);
559 };
560
561
562 // Interface to java.lang.Throwable objects
563
564 class java_lang_Throwable: AllStatic {
565 friend class BacktraceBuilder;
566 friend class BacktraceIterator;
567
568 private:
569 // Trace constants
570 enum {
571 trace_methods_offset = 0,
572 trace_bcis_offset = 1,
573 trace_mirrors_offset = 2,
574 trace_names_offset = 3,
575 trace_conts_offset = 4,
576 trace_next_offset = 5,
577 trace_hidden_offset = 6,
578 trace_size = 7,
579 trace_chunk_size = 32
580 };
581
582 static int _backtrace_offset;
583 static int _detailMessage_offset;
584 static int _stackTrace_offset;
585 static int _depth_offset;
586 static int _cause_offset;
587 static int _static_unassigned_stacktrace_offset;
588
589 // StackTrace (programmatic access, new since 1.4)
590 static void clear_stacktrace(oop throwable);
591 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
592 static void set_stacktrace(oop throwable, oop st_element_array);
593 static oop unassigned_stacktrace();
594
595 public:
596 // Backtrace
597 static oop backtrace(oop throwable);
598 static void set_backtrace(oop throwable, oop value);
599 static int depth(oop throwable);
600 static void set_depth(oop throwable, int value);
601 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
602 // Message
603 static oop message(oop throwable);
604 static oop cause(oop throwable);
605 static void set_message(oop throwable, oop value);
606 static Symbol* detail_message(oop throwable);
607 static void print_stack_element(outputStream *st, Method* method, int bci);
608
609 static void compute_offsets();
610 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
611
612 // Allocate space for backtrace (created but stack trace not filled in)
613 static void allocate_backtrace(Handle throwable, TRAPS);
614 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
615 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
616 // Fill in current stack trace, can cause GC
617 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
618 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
619
620 // Programmatic access to stack trace
621 static void get_stack_trace_elements(int depth, Handle backtrace, objArrayHandle stack_trace, TRAPS);
622
623 // For recreating class initialization error exceptions.
624 static Handle create_initialization_error(JavaThread* current, Handle throwable);
625
626 // Printing
627 static void print(oop throwable, outputStream* st);
628 static void print_stack_trace(Handle throwable, outputStream* st);
629 static void java_printStackTrace(Handle throwable, TRAPS);
630 // Debugging
631 friend class JavaClasses;
632 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
633 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
634 };
635
636
637 // Interface to java.lang.reflect.AccessibleObject objects
638
639 class java_lang_reflect_AccessibleObject: AllStatic {
640 private:
641 // Note that to reduce dependencies on the JDK we compute these
642 // offsets at run-time.
643 static int _override_offset;
644
645 static void compute_offsets();
646
647 public:
648 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
649
650 // Accessors
651 static jboolean override(oop reflect);
652 static void set_override(oop reflect, jboolean value);
653
654 // Debugging
655 friend class JavaClasses;
656 };
657
658
659 // Interface to java.lang.reflect.Method objects
660
661 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
662 private:
663 // Note that to reduce dependencies on the JDK we compute these
664 // offsets at run-time.
665 static int _clazz_offset;
666 static int _name_offset;
667 static int _returnType_offset;
668 static int _parameterTypes_offset;
669 static int _exceptionTypes_offset;
670 static int _slot_offset;
671 static int _modifiers_offset;
672 static int _signature_offset;
673 static int _annotations_offset;
674 static int _parameter_annotations_offset;
675 static int _annotation_default_offset;
676
677 static void compute_offsets();
678 public:
679 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
680
681 // Allocation
682 static Handle create(TRAPS);
683
684 // Accessors
685 static oop clazz(oop reflect);
686 static void set_clazz(oop reflect, oop value);
687
688 static void set_name(oop method, oop value);
689
690 static oop return_type(oop method);
691 static void set_return_type(oop method, oop value);
692
693 static oop parameter_types(oop method);
694 static void set_parameter_types(oop method, oop value);
695
696 static int slot(oop reflect);
697 static void set_slot(oop reflect, int value);
698
699 static void set_exception_types(oop method, oop value);
700 static void set_modifiers(oop method, int value);
701 static void set_signature(oop method, oop value);
702 static void set_annotations(oop method, oop value);
703 static void set_parameter_annotations(oop method, oop value);
704 static void set_annotation_default(oop method, oop value);
705
706 // Debugging
707 friend class JavaClasses;
708 };
709
710
711 // Interface to java.lang.reflect.Constructor objects
712
713 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
714 private:
715 // Note that to reduce dependencies on the JDK we compute these
716 // offsets at run-time.
717 static int _clazz_offset;
718 static int _parameterTypes_offset;
719 static int _exceptionTypes_offset;
720 static int _slot_offset;
721 static int _modifiers_offset;
722 static int _signature_offset;
723 static int _annotations_offset;
724 static int _parameter_annotations_offset;
725
726 static void compute_offsets();
727 public:
728 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
729
730 // Allocation
731 static Handle create(TRAPS);
732
733 // Accessors
734 static oop clazz(oop reflect);
735 static void set_clazz(oop reflect, oop value);
736
737 static oop parameter_types(oop constructor);
738 static void set_parameter_types(oop constructor, oop value);
739
740 static int slot(oop reflect);
741 static void set_slot(oop reflect, int value);
742
743 static void set_exception_types(oop constructor, oop value);
744 static void set_modifiers(oop constructor, int value);
745 static void set_signature(oop constructor, oop value);
746 static void set_annotations(oop constructor, oop value);
747 static void set_parameter_annotations(oop method, oop value);
748
749 // Debugging
750 friend class JavaClasses;
751 };
752
753
754 // Interface to java.lang.reflect.Field objects
755
756 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
757 private:
758 // Note that to reduce dependencies on the JDK we compute these
759 // offsets at run-time.
760 static int _clazz_offset;
761 static int _name_offset;
762 static int _type_offset;
763 static int _slot_offset;
764 static int _modifiers_offset;
765 static int _flags_offset;
766 static int _signature_offset;
767 static int _annotations_offset;
768
769 static void compute_offsets();
770
771 public:
772 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
773
774 // Allocation
775 static Handle create(TRAPS);
776
777 // Accessors
778 static oop clazz(oop reflect);
779 static void set_clazz(oop reflect, oop value);
780
781 static oop name(oop field);
782 static void set_name(oop field, oop value);
783
784 static oop type(oop field);
785 static void set_type(oop field, oop value);
786
787 static int slot(oop reflect);
788 static void set_slot(oop reflect, int value);
789
790 static int modifiers(oop field);
791 static void set_modifiers(oop field, int value);
792
793 static void set_flags(oop field, int value);
794
795 static void set_signature(oop constructor, oop value);
796 static void set_annotations(oop constructor, oop value);
797
798 // Debugging
799 friend class JavaClasses;
800 };
801
802 class java_lang_reflect_Parameter {
803 private:
804 // Note that to reduce dependencies on the JDK we compute these
805 // offsets at run-time.
806 static int _name_offset;
807 static int _modifiers_offset;
808 static int _index_offset;
809 static int _executable_offset;
810
811 static void compute_offsets();
812
813 public:
814 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
815
816 // Allocation
817 static Handle create(TRAPS);
818
819 // Accessors
820 static oop name(oop field);
821 static void set_name(oop field, oop value);
822
823 static int index(oop reflect);
824 static void set_index(oop reflect, int value);
825
826 static int modifiers(oop reflect);
827 static void set_modifiers(oop reflect, int value);
828
829 static oop executable(oop constructor);
830 static void set_executable(oop constructor, oop value);
831
832 friend class JavaClasses;
833 };
834
835 #define MODULE_INJECTED_FIELDS(macro) \
836 macro(java_lang_Module, module_entry, intptr_signature, false)
837
838 class java_lang_Module {
839 private:
840 static int _loader_offset;
841 static int _name_offset;
842 static int _module_entry_offset;
843
844 static void compute_offsets();
845
846 public:
847 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
848
849 // Allocation
850 static Handle create(Handle loader, Handle module_name, TRAPS);
851
852 // Testers
853 static bool is_instance(oop obj);
854
855 // Accessors
856 static oop loader(oop module);
857 static void set_loader(oop module, oop value);
858
859 // CDS
860 static int module_entry_offset() { return _module_entry_offset; }
861
862 static oop name(oop module);
863 static void set_name(oop module, oop value);
864
865 static ModuleEntry* module_entry(oop module);
866 static ModuleEntry* module_entry_raw(oop module);
867 static void set_module_entry(oop module, ModuleEntry* module_entry);
868
869 friend class JavaClasses;
870 };
871
872 // Interface to jdk.internal.reflect.ConstantPool objects
873 class reflect_ConstantPool {
874 private:
875 // Note that to reduce dependencies on the JDK we compute these
876 // offsets at run-time.
877 static int _oop_offset;
878
879 static void compute_offsets();
880
881 public:
882 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
883
884 // Allocation
885 static Handle create(TRAPS);
886
887 // Accessors
888 static void set_cp(oop reflect, ConstantPool* value);
889 static int oop_offset() { CHECK_INIT(_oop_offset); }
890
891 static ConstantPool* get_cp(oop reflect);
892
893 // Debugging
894 friend class JavaClasses;
895 };
896
897
898 // Interface to java.lang primitive type boxing objects:
899 // - java.lang.Boolean
900 // - java.lang.Character
901 // - java.lang.Float
902 // - java.lang.Double
903 // - java.lang.Byte
904 // - java.lang.Short
905 // - java.lang.Integer
906 // - java.lang.Long
907
908 // This could be separated out into 8 individual classes.
909
910 class java_lang_boxing_object: AllStatic {
911 private:
912 static int _value_offset;
913 static int _long_value_offset;
914
915 static void compute_offsets();
916 static oop initialize_and_allocate(BasicType type, TRAPS);
917 public:
918 // Allocation. Returns a boxed value, or null for invalid type.
919 static oop create(BasicType type, jvalue* value, TRAPS);
920 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
921 static BasicType get_value(oop box, jvalue* value);
922 static BasicType set_value(oop box, jvalue* value);
923 static BasicType basic_type(oop box);
924 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
925 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
926 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
927 static void print(BasicType type, jvalue* value, outputStream* st);
928
929 static int value_offset(BasicType type) {
930 return is_double_word_type(type) ? _long_value_offset : _value_offset;
931 }
932
933 static void serialize_offsets(SerializeClosure* f);
934
935 // Debugging
936 friend class JavaClasses;
937 };
938
939
940
941 // Interface to java.lang.ref.Reference objects
942
943 class java_lang_ref_Reference: AllStatic {
944 static int _referent_offset;
945 static int _queue_offset;
946 static int _next_offset;
947 static int _discovered_offset;
948
949 static bool _offsets_initialized;
950
951 public:
952 // Accessors
953 static inline oop weak_referent_no_keepalive(oop ref);
954 static inline oop weak_referent(oop ref);
955 static inline oop phantom_referent_no_keepalive(oop ref);
956 static inline oop unknown_referent_no_keepalive(oop ref);
957 static inline void clear_referent(oop ref);
958 static inline void clear_referent_raw(oop ref);
959 static inline HeapWord* referent_addr_raw(oop ref);
960 static inline oop next(oop ref);
961 static inline void set_next(oop ref, oop value);
962 static inline void set_next_raw(oop ref, oop value);
963 static inline HeapWord* next_addr_raw(oop ref);
964 static inline oop discovered(oop ref);
965 static inline void set_discovered(oop ref, oop value);
966 static inline void set_discovered_raw(oop ref, oop value);
967 static inline HeapWord* discovered_addr_raw(oop ref);
968 static bool is_referent_field(oop obj, ptrdiff_t offset);
969 static inline bool is_final(oop ref);
970 static inline bool is_phantom(oop ref);
971 static inline bool is_weak(oop ref);
972 static inline bool is_soft(oop ref);
973
974 static int referent_offset() { CHECK_INIT(_referent_offset); }
975 static int queue_offset() { CHECK_INIT(_queue_offset); }
976 static int next_offset() { CHECK_INIT(_next_offset); }
977 static int discovered_offset() { CHECK_INIT(_discovered_offset); }
978
979 static void compute_offsets();
980 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
981 };
982
983
984 // Interface to java.lang.ref.SoftReference objects
985
986 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
987 static int _timestamp_offset;
988 static int _static_clock_offset;
989
990 public:
991 // Accessors
992 static jlong timestamp(oop ref);
993
994 // Accessors for statics
995 static jlong clock();
996 static void set_clock(jlong value);
997
998 static void compute_offsets();
999 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1000 };
1001
1002 // Interface to java.lang.invoke.MethodHandle objects
1003
1004 class java_lang_invoke_MethodHandle: AllStatic {
1005 friend class JavaClasses;
1006
1007 private:
1008 static int _type_offset; // the MethodType of this MH
1009 static int _form_offset; // the LambdaForm of this MH
1010
1011 static void compute_offsets();
1012
1013 public:
1014 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1015
1016 // Accessors
1017 static oop type(oop mh);
1018 static void set_type(oop mh, oop mtype);
1019
1020 static oop form(oop mh);
1021 static void set_form(oop mh, oop lform);
1022
1023 // Testers
1024 static bool is_subclass(Klass* klass) {
1025 return klass->is_subclass_of(vmClasses::MethodHandle_klass());
1026 }
1027 static bool is_instance(oop obj);
1028
1029 // Accessors for code generation:
1030 static int type_offset() { CHECK_INIT(_type_offset); }
1031 static int form_offset() { CHECK_INIT(_form_offset); }
1032 };
1033
1034 // Interface to java.lang.invoke.DirectMethodHandle objects
1035
1036 class java_lang_invoke_DirectMethodHandle: AllStatic {
1037 friend class JavaClasses;
1038
1039 private:
1040 static int _member_offset; // the MemberName of this DMH
1041
1042 static void compute_offsets();
1043
1044 public:
1045 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1046
1047 // Accessors
1048 static oop member(oop mh);
1049
1050 // Testers
1051 static bool is_subclass(Klass* klass) {
1052 return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass());
1053 }
1054 static bool is_instance(oop obj);
1055
1056 // Accessors for code generation:
1057 static int member_offset() { CHECK_INIT(_member_offset); }
1058 };
1059
1060 // Interface to java.lang.invoke.LambdaForm objects
1061 // (These are a private interface for managing adapter code generation.)
1062
1063 class java_lang_invoke_LambdaForm: AllStatic {
1064 friend class JavaClasses;
1065
1066 private:
1067 static int _vmentry_offset; // type is MemberName
1068
1069 static void compute_offsets();
1070
1071 public:
1072 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1073
1074 // Accessors
1075 static oop vmentry(oop lform);
1076
1077 // Testers
1078 static bool is_subclass(Klass* klass) {
1079 return vmClasses::LambdaForm_klass() != nullptr &&
1080 klass->is_subclass_of(vmClasses::LambdaForm_klass());
1081 }
1082 static bool is_instance(oop obj);
1083
1084 // Accessors for code generation:
1085 static int vmentry_offset() { CHECK_INIT(_vmentry_offset); }
1086 };
1087
1088 // Interface to java.lang.invoke.NativeEntryPoint objects
1089 // (These are a private interface for managing adapter code generation.)
1090
1091 class jdk_internal_foreign_abi_NativeEntryPoint: AllStatic {
1092 friend class JavaClasses;
1093
1094 private:
1095 static int _method_type_offset;
1096 static int _downcall_stub_address_offset;
1097
1098 static void compute_offsets();
1099
1100 public:
1101 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1102
1103 // Accessors
1104 static oop method_type(oop entry);
1105 static jlong downcall_stub_address(oop entry);
1106
1107 // Testers
1108 static bool is_subclass(Klass* klass) {
1109 return vmClasses::NativeEntryPoint_klass() != nullptr &&
1110 klass->is_subclass_of(vmClasses::NativeEntryPoint_klass());
1111 }
1112 static bool is_instance(oop obj);
1113
1114 // Accessors for code generation:
1115 static int method_type_offset_in_bytes() { return _method_type_offset; }
1116 static int downcall_stub_address_offset_in_bytes() { return _downcall_stub_address_offset; }
1117 };
1118
1119 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic {
1120 friend class JavaClasses;
1121
1122 private:
1123 static int _inputStorage_offset;
1124 static int _outputStorage_offset;
1125 static int _volatileStorage_offset;
1126 static int _stackAlignment_offset;
1127 static int _shadowSpace_offset;
1128 static int _scratch1_offset;
1129 static int _scratch2_offset;
1130
1131 static void compute_offsets();
1132
1133 public:
1134 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1135
1136 // Accessors
1137 static objArrayOop inputStorage(oop entry);
1138 static objArrayOop outputStorage(oop entry);
1139 static objArrayOop volatileStorage(oop entry);
1140 static jint stackAlignment(oop entry);
1141 static jint shadowSpace(oop entry);
1142 static oop scratch1(oop entry);
1143 static oop scratch2(oop entry);
1144
1145 // Testers
1146 static bool is_subclass(Klass* klass) {
1147 return vmClasses::ABIDescriptor_klass() != nullptr &&
1148 klass->is_subclass_of(vmClasses::ABIDescriptor_klass());
1149 }
1150 static bool is_instance(oop obj);
1151 };
1152
1153 class jdk_internal_foreign_abi_VMStorage: AllStatic {
1154 friend class JavaClasses;
1155
1156 private:
1157 static int _type_offset;
1158 static int _indexOrOffset_offset;
1159 static int _segmentMaskOrSize_offset;
1160 static int _debugName_offset;
1161
1162 static void compute_offsets();
1163
1164 public:
1165 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1166
1167 // Accessors
1168 static jbyte type(oop entry);
1169 static jint index_or_offset(oop entry);
1170 static jshort segment_mask_or_size(oop entry);
1171 static oop debugName(oop entry);
1172
1173 // Testers
1174 static bool is_subclass(Klass* klass) {
1175 return vmClasses::VMStorage_klass() != nullptr &&
1176 klass->is_subclass_of(vmClasses::VMStorage_klass());
1177 }
1178 static bool is_instance(oop obj);
1179 };
1180
1181 class jdk_internal_foreign_abi_CallConv: AllStatic {
1182 friend class JavaClasses;
1183
1184 private:
1185 static int _argRegs_offset;
1186 static int _retRegs_offset;
1187
1188 static void compute_offsets();
1189
1190 public:
1191 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1192
1193 // Accessors
1194 static objArrayOop argRegs(oop entry);
1195 static objArrayOop retRegs(oop entry);
1196
1197 // Testers
1198 static bool is_subclass(Klass* klass) {
1199 return vmClasses::CallConv_klass() != nullptr &&
1200 klass->is_subclass_of(vmClasses::CallConv_klass());
1201 }
1202 static bool is_instance(oop obj);
1203 };
1204
1205 // Interface to java.lang.invoke.MemberName objects
1206 // (These are a private interface for Java code to query the class hierarchy.)
1207
1208 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1209 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1210
1211 class java_lang_invoke_ResolvedMethodName : AllStatic {
1212 friend class JavaClasses;
1213
1214 static int _vmtarget_offset;
1215 static int _vmholder_offset;
1216
1217 static void compute_offsets();
1218 public:
1219 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1220
1221 static int vmtarget_offset() { CHECK_INIT(_vmtarget_offset); }
1222
1223 static Method* vmtarget(oop resolved_method);
1224 static void set_vmtarget(oop resolved_method, Method* method);
1225
1226 static void set_vmholder(oop resolved_method, oop holder);
1227
1228 // find or create resolved member name
1229 static oop find_resolved_method(const methodHandle& m, TRAPS);
1230
1231 static bool is_instance(oop resolved_method);
1232 };
1233
1234
1235 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1236 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1237
1238
1239 class java_lang_invoke_MemberName: AllStatic {
1240 friend class JavaClasses;
1241
1242 private:
1243 // From java.lang.invoke.MemberName:
1244 // private Class<?> clazz; // class in which the method is defined
1245 // private String name; // may be null if not yet materialized
1246 // private Object type; // may be null if not yet materialized
1247 // private int flags; // modifier bits; see reflect.Modifier
1248 // private ResolvedMethodName method; // holds VM-specific target value
1249 // private intptr_t vmindex; // member index within class or interface
1250 static int _clazz_offset;
1251 static int _name_offset;
1252 static int _type_offset;
1253 static int _flags_offset;
1254 static int _method_offset;
1255 static int _vmindex_offset;
1256
1257 static void compute_offsets();
1258
1259 public:
1260 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1261 // Accessors
1262 static oop clazz(oop mname);
1263 static void set_clazz(oop mname, oop clazz);
1264
1265 static oop type(oop mname);
1266 static void set_type(oop mname, oop type);
1267
1268 static oop name(oop mname);
1269 static void set_name(oop mname, oop name);
1270
1271 static int flags(oop mname);
1272 static void set_flags(oop mname, int flags);
1273
1274 // Link through ResolvedMethodName field to get Method*
1275 static Method* vmtarget(oop mname);
1276 static void set_method(oop mname, oop method);
1277
1278 static intptr_t vmindex(oop mname);
1279 static void set_vmindex(oop mname, intptr_t index);
1280
1281 // Testers
1282 static bool is_subclass(Klass* klass) {
1283 return klass->is_subclass_of(vmClasses::MemberName_klass());
1284 }
1285 static bool is_instance(oop obj);
1286
1287 static bool is_method(oop obj);
1288
1289 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1290 enum {
1291 MN_IS_METHOD = 0x00010000, // method (not constructor)
1292 MN_IS_OBJECT_CONSTRUCTOR = 0x00020000, // constructor
1293 MN_IS_FIELD = 0x00040000, // field
1294 MN_IS_TYPE = 0x00080000, // nested type
1295 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1296 MN_TRUSTED_FINAL = 0x00200000, // trusted final field
1297 MN_HIDDEN_MEMBER = 0x00400000, // @Hidden annotation detected
1298 MN_FLAT_FIELD = 0x00800000, // flat field
1299 MN_NULL_RESTRICTED_FIELD = 0x01000000, // null-restricted field
1300 MN_REFERENCE_KIND_SHIFT = 26, // refKind
1301 MN_REFERENCE_KIND_MASK = 0x3C000000 >> MN_REFERENCE_KIND_SHIFT,
1302 MN_NESTMATE_CLASS = 0x00000001,
1303 MN_HIDDEN_CLASS = 0x00000002,
1304 MN_STRONG_LOADER_LINK = 0x00000004,
1305 MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1306 // Lookup modes
1307 MN_MODULE_MODE = 0x00000010,
1308 MN_UNCONDITIONAL_MODE = 0x00000020,
1309 MN_TRUSTED_MODE = -1
1310 };
1311
1312 // Accessors for code generation:
1313 static int clazz_offset() { CHECK_INIT(_clazz_offset); }
1314 static int type_offset() { CHECK_INIT(_type_offset); }
1315 static int flags_offset() { CHECK_INIT(_flags_offset); }
1316 static int method_offset() { CHECK_INIT(_method_offset); }
1317 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1318 };
1319
1320
1321 // Interface to java.lang.invoke.MethodType objects
1322
1323 class java_lang_invoke_MethodType: AllStatic {
1324 friend class JavaClasses;
1325
1326 private:
1327 static int _rtype_offset;
1328 static int _ptypes_offset;
1329
1330 static void compute_offsets();
1331
1332 public:
1333 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1334 // Accessors
1335 static oop rtype(oop mt);
1336 static objArrayOop ptypes(oop mt);
1337
1338 static oop ptype(oop mt, int index);
1339 static int ptype_count(oop mt);
1340
1341 static int ptype_slot_count(oop mt); // extra counts for long/double
1342 static int rtype_slot_count(oop mt); // extra counts for long/double
1343
1344 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1345 static void print_signature(oop mt, outputStream* st);
1346
1347 static bool is_instance(oop obj);
1348
1349 static bool equals(oop mt1, oop mt2);
1350
1351 // Accessors for code generation:
1352 static int rtype_offset() { CHECK_INIT(_rtype_offset); }
1353 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); }
1354 };
1355
1356
1357 // Interface to java.lang.invoke.CallSite objects
1358
1359 class java_lang_invoke_CallSite: AllStatic {
1360 friend class JavaClasses;
1361
1362 private:
1363 static int _target_offset;
1364 static int _context_offset;
1365
1366 static void compute_offsets();
1367
1368 public:
1369 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1370 // Accessors
1371 static oop target( oop site);
1372 static void set_target( oop site, oop target);
1373 static void set_target_volatile( oop site, oop target);
1374
1375 static oop context_no_keepalive(oop site);
1376
1377 // Testers
1378 static bool is_subclass(Klass* klass) {
1379 return klass->is_subclass_of(vmClasses::CallSite_klass());
1380 }
1381 static bool is_instance(oop obj);
1382
1383 // Accessors for code generation:
1384 static int target_offset() { CHECK_INIT(_target_offset); }
1385 static int context_offset() { CHECK_INIT(_context_offset); }
1386 };
1387
1388 // Interface to java.lang.invoke.ConstantCallSite objects
1389
1390 class java_lang_invoke_ConstantCallSite: AllStatic {
1391 friend class JavaClasses;
1392
1393 private:
1394 static int _is_frozen_offset;
1395
1396 static void compute_offsets();
1397
1398 public:
1399 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1400 // Accessors
1401 static jboolean is_frozen(oop site);
1402
1403 // Testers
1404 static bool is_subclass(Klass* klass) {
1405 return klass->is_subclass_of(vmClasses::ConstantCallSite_klass());
1406 }
1407 static bool is_instance(oop obj);
1408 };
1409
1410 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1411
1412 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1413 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1414 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1415
1416 class DependencyContext;
1417
1418 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1419 friend class JavaClasses;
1420
1421 private:
1422 static int _vmdependencies_offset;
1423 static int _last_cleanup_offset;
1424
1425 static void compute_offsets();
1426
1427 public:
1428 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1429 // Accessors
1430 static DependencyContext vmdependencies(oop context);
1431
1432 // Testers
1433 static bool is_subclass(Klass* klass) {
1434 return klass->is_subclass_of(vmClasses::Context_klass());
1435 }
1436 static bool is_instance(oop obj);
1437 };
1438
1439 // Interface to java.security.AccessControlContext objects
1440
1441 class java_security_AccessControlContext: AllStatic {
1442 private:
1443 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1444 // so we compute the offsets at startup rather than hard-wiring them.
1445 static int _context_offset;
1446 static int _privilegedContext_offset;
1447 static int _isPrivileged_offset;
1448 static int _isAuthorized_offset;
1449
1450 static void compute_offsets();
1451 public:
1452 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1453 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1454
1455 // Debugging/initialization
1456 friend class JavaClasses;
1457 };
1458
1459
1460 // Interface to java.lang.ClassLoader objects
1461
1462 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1463 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1464
1465 class java_lang_ClassLoader : AllStatic {
1466 private:
1467 static int _loader_data_offset;
1468 static int _parent_offset;
1469 static int _parallelCapable_offset;
1470 static int _name_offset;
1471 static int _nameAndId_offset;
1472 static int _unnamedModule_offset;
1473
1474 static void compute_offsets();
1475
1476 public:
1477 // Support for CDS
1478 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1479 static int loader_data_offset() { return _loader_data_offset; }
1480
1481 static ClassLoaderData* loader_data_acquire(oop loader);
1482 static ClassLoaderData* loader_data(oop loader);
1483 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1484
1485 static oop parent(oop loader);
1486 static oop parent_no_keepalive(oop loader);
1487 static oop name(oop loader);
1488 static oop nameAndId(oop loader);
1489 static bool isAncestor(oop loader, oop cl);
1490
1491 // Support for parallelCapable field
1492 static bool parallelCapable(oop the_class_mirror);
1493
1494 static bool is_trusted_loader(oop loader);
1495
1496 // Return true if this is one of the class loaders associated with
1497 // the generated bytecodes for serialization constructor returned
1498 // by sun.reflect.ReflectionFactory::newConstructorForSerialization
1499 static bool is_reflection_class_loader(oop loader);
1500
1501 // Fix for 4474172
1502 static oop non_reflection_class_loader(oop loader);
1503
1504 // Testers
1505 static bool is_subclass(Klass* klass) {
1506 return klass->is_subclass_of(vmClasses::ClassLoader_klass());
1507 }
1508 static bool is_instance(oop obj);
1509
1510 static oop unnamedModule(oop loader);
1511
1512 // Debugging
1513 friend class JavaClasses;
1514 };
1515
1516
1517 // Interface to java.lang.System objects
1518
1519 class java_lang_System : AllStatic {
1520 private:
1521 static int _static_in_offset;
1522 static int _static_out_offset;
1523 static int _static_err_offset;
1524 static int _static_security_offset;
1525 static int _static_allow_security_offset;
1526 static int _static_never_offset;
1527
1528 public:
1529 static int in_offset() { CHECK_INIT(_static_in_offset); }
1530 static int out_offset() { CHECK_INIT(_static_out_offset); }
1531 static int err_offset() { CHECK_INIT(_static_err_offset); }
1532 static bool allow_security_manager();
1533 static bool has_security_manager();
1534
1535 static void compute_offsets();
1536 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1537
1538 // Debugging
1539 friend class JavaClasses;
1540 };
1541
1542
1543 // Interface to java.lang.StackTraceElement objects
1544
1545 class java_lang_StackTraceElement: AllStatic {
1546 private:
1547 static int _declaringClassObject_offset;
1548 static int _classLoaderName_offset;
1549 static int _moduleName_offset;
1550 static int _moduleVersion_offset;
1551 static int _declaringClass_offset;
1552 static int _methodName_offset;
1553 static int _fileName_offset;
1554 static int _lineNumber_offset;
1555
1556 // Setters
1557 static void set_classLoaderName(oop element, oop value);
1558 static void set_moduleName(oop element, oop value);
1559 static void set_moduleVersion(oop element, oop value);
1560 static void set_declaringClass(oop element, oop value);
1561 static void set_methodName(oop element, oop value);
1562 static void set_fileName(oop element, oop value);
1563 static void set_lineNumber(oop element, int value);
1564 static void set_declaringClassObject(oop element, oop value);
1565
1566 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1567 const methodHandle& method, int bci,
1568 Symbol*& source, oop& source_file, int& line_number, TRAPS);
1569
1570 public:
1571 // Create an instance of StackTraceElement
1572 static oop create(const methodHandle& method, int bci, TRAPS);
1573
1574 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1575 int version, int bci, Symbol* name, TRAPS);
1576
1577 static void compute_offsets();
1578 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1579
1580 #if INCLUDE_JVMCI
1581 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1582 #endif
1583
1584 // Debugging
1585 friend class JavaClasses;
1586 };
1587
1588
1589 class Backtrace: AllStatic {
1590 public:
1591 // Helper backtrace functions to store bci|version together.
1592 static int merge_bci_and_version(int bci, int version);
1593 static int merge_mid_and_cpref(int mid, int cpref);
1594 static int bci_at(unsigned int merged);
1595 static int version_at(unsigned int merged);
1596 static int mid_at(unsigned int merged);
1597 static int cpref_at(unsigned int merged);
1598 static int get_line_number(Method* method, int bci);
1599 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1600
1601 // Debugging
1602 friend class JavaClasses;
1603 };
1604
1605 class java_lang_ClassFrameInfo: AllStatic {
1606 private:
1607 static int _classOrMemberName_offset;
1608 static int _flags_offset;
1609
1610 public:
1611 static oop classOrMemberName(oop info);
1612 static int flags(oop info);
1613
1614 // Setters
1615 static void init_class(Handle stackFrame, const methodHandle& m);
1616 static void init_method(Handle stackFrame, const methodHandle& m, TRAPS);
1617
1618 static void compute_offsets();
1619 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1620
1621 // Debugging
1622 friend class JavaClasses;
1623 };
1624
1625 // Interface to java.lang.StackFrameInfo objects
1626
1627 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1628 macro(java_lang_StackFrameInfo, version, short_signature, false)
1629
1630 class java_lang_StackFrameInfo: AllStatic {
1631 private:
1632 static int _type_offset;
1633 static int _name_offset;
1634 static int _bci_offset;
1635 static int _version_offset;
1636 static int _contScope_offset;
1637
1638 public:
1639 // Getters
1640 static oop name(oop info);
1641 static oop type(oop info);
1642 static Method* get_method(oop info);
1643
1644 // Setters
1645 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS);
1646 static void set_name(oop info, oop value);
1647 static void set_type(oop info, oop value);
1648 static void set_bci(oop info, int value);
1649
1650 static void set_version(oop info, short value);
1651 static void set_contScope(oop info, oop value);
1652
1653 static void compute_offsets();
1654 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1655
1656 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1657
1658 // Debugging
1659 friend class JavaClasses;
1660 };
1661
1662 class java_lang_LiveStackFrameInfo: AllStatic {
1663 private:
1664 static int _monitors_offset;
1665 static int _locals_offset;
1666 static int _operands_offset;
1667 static int _mode_offset;
1668
1669 public:
1670 static void set_monitors(oop info, oop value);
1671 static void set_locals(oop info, oop value);
1672 static void set_operands(oop info, oop value);
1673 static void set_mode(oop info, int value);
1674
1675 static void compute_offsets();
1676 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1677
1678 // Debugging
1679 friend class JavaClasses;
1680 };
1681
1682 // Interface to java.lang.reflect.RecordComponent objects
1683
1684 class java_lang_reflect_RecordComponent: AllStatic {
1685 private:
1686 static int _clazz_offset;
1687 static int _name_offset;
1688 static int _type_offset;
1689 static int _accessor_offset;
1690 static int _signature_offset;
1691 static int _annotations_offset;
1692 static int _typeAnnotations_offset;
1693
1694 // Setters
1695 static void set_clazz(oop element, oop value);
1696 static void set_name(oop element, oop value);
1697 static void set_type(oop element, oop value);
1698 static void set_accessor(oop element, oop value);
1699 static void set_signature(oop element, oop value);
1700 static void set_annotations(oop element, oop value);
1701 static void set_typeAnnotations(oop element, oop value);
1702
1703 public:
1704 // Create an instance of RecordComponent
1705 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1706
1707 static void compute_offsets();
1708 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1709
1710 // Debugging
1711 friend class JavaClasses;
1712 };
1713
1714
1715 // Interface to java.lang.AssertionStatusDirectives objects
1716
1717 class java_lang_AssertionStatusDirectives: AllStatic {
1718 private:
1719 static int _classes_offset;
1720 static int _classEnabled_offset;
1721 static int _packages_offset;
1722 static int _packageEnabled_offset;
1723 static int _deflt_offset;
1724
1725 public:
1726 // Setters
1727 static void set_classes(oop obj, oop val);
1728 static void set_classEnabled(oop obj, oop val);
1729 static void set_packages(oop obj, oop val);
1730 static void set_packageEnabled(oop obj, oop val);
1731 static void set_deflt(oop obj, bool val);
1732
1733 static void compute_offsets();
1734 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1735
1736 // Debugging
1737 friend class JavaClasses;
1738 };
1739
1740
1741 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1742 private:
1743 static int _owner_offset;
1744 public:
1745 static void compute_offsets();
1746 static oop get_owner_threadObj(oop obj);
1747 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1748 };
1749
1750 // Interface to jdk.internal.misc.UnsafeConsants
1751
1752 class jdk_internal_misc_UnsafeConstants : AllStatic {
1753 public:
1754 static void set_unsafe_constants();
1755 static void compute_offsets() { }
1756 static void serialize_offsets(SerializeClosure* f) { }
1757 };
1758
1759 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects
1760
1761 class vector_VectorPayload : AllStatic {
1762 private:
1763 static int _payload_offset;
1764 public:
1765 static void set_payload(oop o, oop val);
1766
1767 static void compute_offsets();
1768 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1769
1770 // Testers
1771 static bool is_subclass(Klass* klass) {
1772 return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass());
1773 }
1774 static bool is_instance(oop obj);
1775 };
1776
1777 class java_lang_Integer : AllStatic {
1778 public:
1779 static jint value(oop obj);
1780 };
1781
1782 class java_lang_Long : AllStatic {
1783 public:
1784 static jlong value(oop obj);
1785 };
1786
1787 class java_lang_Character : AllStatic {
1788 public:
1789 static jchar value(oop obj);
1790 };
1791
1792 class java_lang_Short : AllStatic {
1793 public:
1794 static jshort value(oop obj);
1795 };
1796
1797 class java_lang_Byte : AllStatic {
1798 public:
1799 static jbyte value(oop obj);
1800 };
1801
1802 class java_lang_Boolean : AllStatic {
1803 private:
1804 static int _static_TRUE_offset;
1805 static int _static_FALSE_offset;
1806 public:
1807 static Symbol* symbol();
1808 static void compute_offsets(InstanceKlass* k);
1809 static oop get_TRUE(InstanceKlass *k);
1810 static oop get_FALSE(InstanceKlass *k);
1811 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1812 static jboolean value(oop obj);
1813 };
1814
1815 class java_lang_Integer_IntegerCache : AllStatic {
1816 private:
1817 static int _static_cache_offset;
1818 public:
1819 static Symbol* symbol();
1820 static void compute_offsets(InstanceKlass* k);
1821 static objArrayOop cache(InstanceKlass *k);
1822 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1823 };
1824
1825 class java_lang_Long_LongCache : AllStatic {
1826 private:
1827 static int _static_cache_offset;
1828 public:
1829 static Symbol* symbol();
1830 static void compute_offsets(InstanceKlass* k);
1831 static objArrayOop cache(InstanceKlass *k);
1832 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1833 };
1834
1835 class java_lang_Character_CharacterCache : AllStatic {
1836 private:
1837 static int _static_cache_offset;
1838 public:
1839 static Symbol* symbol();
1840 static void compute_offsets(InstanceKlass* k);
1841 static objArrayOop cache(InstanceKlass *k);
1842 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1843 };
1844
1845 class java_lang_Short_ShortCache : AllStatic {
1846 private:
1847 static int _static_cache_offset;
1848 public:
1849 static Symbol* symbol();
1850 static void compute_offsets(InstanceKlass* k);
1851 static objArrayOop cache(InstanceKlass *k);
1852 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1853 };
1854
1855 class java_lang_Byte_ByteCache : AllStatic {
1856 private:
1857 static int _static_cache_offset;
1858 public:
1859 static Symbol* symbol();
1860 static void compute_offsets(InstanceKlass* k);
1861 static objArrayOop cache(InstanceKlass *k);
1862 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1863 };
1864
1865 // Interface to java.lang.InternalError objects
1866
1867 #define INTERNALERROR_INJECTED_FIELDS(macro) \
1868 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1869
1870 class java_lang_InternalError : AllStatic {
1871 private:
1872 static int _during_unsafe_access_offset;
1873 public:
1874 static jboolean during_unsafe_access(oop internal_error);
1875 static void set_during_unsafe_access(oop internal_error);
1876 static void compute_offsets();
1877 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1878 };
1879
1880 // Use to declare fields that need to be injected into Java classes
1881 // for the JVM to use. The name_index and signature_index are
1882 // declared in vmSymbols. The may_be_java flag is used to declare
1883 // fields that might already exist in Java but should be injected if
1884 // they don't. Otherwise the field is unconditionally injected and
1885 // the JVM uses the injected one. This is to ensure that name
1886 // collisions don't occur. In general may_be_java should be false
1887 // unless there's a good reason.
1888
1889 class InjectedField {
1890 public:
1891 const vmClassID klass_id;
1892 const vmSymbolID name_index;
1893 const vmSymbolID signature_index;
1894 const bool may_be_java;
1895
1896
1897 Klass* klass() const { return vmClasses::klass_at(klass_id); }
1898 Symbol* name() const { return lookup_symbol(name_index); }
1899 Symbol* signature() const { return lookup_symbol(signature_index); }
1900
1901 int compute_offset();
1902
1903 // Find the Symbol for this index
1904 static Symbol* lookup_symbol(vmSymbolID symbol_index) {
1905 return Symbol::vm_symbol_at(symbol_index);
1906 }
1907 };
1908
1909
1910 // Interface to hard-coded offset checking
1911
1912 enum class InjectedFieldID : int;
1913
1914 class JavaClasses : AllStatic {
1915 private:
1916
1917 static InjectedField _injected_fields[];
1918
1919 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1920 public:
1921
1922 static int compute_injected_offset(InjectedFieldID id);
1923
1924 static void compute_offsets();
1925 static void check_offsets() PRODUCT_RETURN;
1926 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1927 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1928 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1929
1930 static void compute_offset(int &dest_offset,
1931 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
1932 bool is_static = false);
1933 static void compute_offset(int& dest_offset, InstanceKlass* ik,
1934 const char* name_string, Symbol* signature_symbol,
1935 bool is_static = false);
1936 };
1937
1938 #undef CHECK_INIT
1939
1940 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP