1 /*
2 * Copyright (c) 1997, 2024, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_CLASSFILE_JAVACLASSES_HPP
27
28 #include "classfile/vmClasses.hpp"
29 #include "oops/instanceKlass.hpp"
30 #include "oops/oopsHierarchy.hpp"
31 #include "oops/symbol.hpp"
32 #include "runtime/handles.hpp"
33 #include "runtime/os.hpp"
34 #include "utilities/macros.hpp"
35 #include "utilities/vmEnums.hpp"
36
37 class JvmtiThreadState;
38 class RecordComponent;
39 class SerializeClosure;
40
41 #define CHECK_INIT(offset) assert(offset != 0, "should be initialized"); return offset;
42
43 // Interface to java.lang.Object objects
44
45 class java_lang_Object : AllStatic {
46 public:
47 static void register_natives(TRAPS);
48 };
49
50 // Interface to java.lang.String objects
51
52 // The flags field is a collection of bits representing boolean values used
53 // internally by the VM.
54 #define STRING_INJECTED_FIELDS(macro) \
55 macro(java_lang_String, flags, byte_signature, false)
56
57 class java_lang_String : AllStatic {
58 private:
59 static int _value_offset;
60 static int _hash_offset;
61 static int _hashIsZero_offset;
62 static int _coder_offset;
63 static int _flags_offset;
64
65 static bool _initialized;
66
67 static Handle basic_create(int length, bool byte_arr, TRAPS);
68
69 static inline void set_coder(oop string, jbyte coder);
70
71 // Bitmasks for values in the injected flags field.
72 static const uint8_t _deduplication_forbidden_mask = 1 << 0;
73 static const uint8_t _deduplication_requested_mask = 1 << 1;
74
75 static int flags_offset() { CHECK_INIT(_flags_offset); }
76 // Return the address of the injected flags field.
77 static inline uint8_t* flags_addr(oop java_string);
78 // Test whether the designated bit of the injected flags field is set.
79 static inline bool is_flag_set(oop java_string, uint8_t flag_mask);
80 // Atomically test and set the designated bit of the injected flags field,
81 // returning true if the bit was already set.
82 static bool test_and_set_flag(oop java_string, uint8_t flag_mask);
83
84 static inline unsigned int hash_code_impl(oop java_string, bool update);
85
86 public:
87
88 // Coders
89 enum Coder {
90 CODER_LATIN1 = 0,
91 CODER_UTF16 = 1
92 };
93
94 static void compute_offsets();
95 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
96
97 // Instance creation
98 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
99 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
100 static Handle create_from_str(const char* utf8_str, TRAPS);
101 static oop create_oop_from_str(const char* utf8_str, TRAPS);
102 static Handle create_from_symbol(Symbol* symbol, TRAPS);
103 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
104
105 static void set_compact_strings(bool value);
106
107 static int value_offset() { CHECK_INIT(_value_offset); }
108 static int coder_offset() { CHECK_INIT(_coder_offset); }
109
110 static inline void set_value(oop string, typeArrayOop buffer);
111
112 // Set the deduplication_forbidden flag true. This flag is sticky; once
113 // set it never gets cleared. This is set when a String is interned in
114 // the StringTable, to prevent string deduplication from changing the
115 // String's value array.
116 static inline void set_deduplication_forbidden(oop java_string);
117
118 // Test and set the deduplication_requested flag. Returns the old value
119 // of the flag. This flag is sticky; once set it never gets cleared.
120 // Some GCs may use this flag when deciding whether to request
121 // deduplication of a String, to avoid multiple requests for the same
122 // object.
123 static inline bool test_and_set_deduplication_requested(oop java_string);
124
125 // Accessors
126 static inline typeArrayOop value(oop java_string);
127 static inline typeArrayOop value_no_keepalive(oop java_string);
128 static inline bool hash_is_set(oop string);
129 static inline bool is_latin1(oop java_string);
130 static inline bool deduplication_forbidden(oop java_string);
131 static inline bool deduplication_requested(oop java_string);
132 static inline int length(oop java_string);
133 static inline int length(oop java_string, typeArrayOop string_value);
134 static size_t utf8_length(oop java_string);
135 static size_t utf8_length(oop java_string, typeArrayOop string_value);
136 // Legacy variants that truncate the length if needed
137 static int utf8_length_as_int(oop java_string);
138 static int utf8_length_as_int(oop java_string, typeArrayOop string_value);
139
140 // String converters
141 static char* as_utf8_string(oop java_string);
142 // `length` is set to the length of the utf8 sequence.
143 static char* as_utf8_string(oop java_string, size_t& length);
144 static char* as_utf8_string_full(oop java_string, char* buf, size_t buflen, size_t& length);
145 static char* as_utf8_string(oop java_string, char* buf, size_t buflen);
146 static char* as_utf8_string(oop java_string, int start, int len);
147 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, size_t buflen);
148 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, size_t buflen);
149 static char* as_platform_dependent_str(Handle java_string, TRAPS);
150 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
151 static jchar* as_unicode_string_or_null(oop java_string, int& length);
152 // produce an ascii string with all other values quoted using \u####
153 static char* as_quoted_ascii(oop java_string);
154
155 // Compute the hash value for a java.lang.String object which would
156 // contain the characters passed in.
157 //
158 // As the hash value used by the String object itself, in
159 // String.hashCode(). This value is normally calculated in Java code
160 // in the String.hashCode method(), but is precomputed for String
161 // objects in the shared archive file.
162 // hash P(31) from Kernighan & Ritchie
163 //
164 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
165 static unsigned int hash_code(const jchar* s, int len) {
166 unsigned int h = 0;
167 while (len-- > 0) {
168 h = 31*h + (unsigned int) *s;
169 s++;
170 }
171 return h;
172 }
173
174 static unsigned int hash_code(const jbyte* s, int len) {
175 unsigned int h = 0;
176 while (len-- > 0) {
177 h = 31*h + (((unsigned int) *s) & 0xFF);
178 s++;
179 }
180 return h;
181 }
182
183 static unsigned int hash_code(oop java_string);
184 static unsigned int hash_code_noupdate(oop java_string);
185
186 static bool equals(oop java_string, const jchar* chars, int len);
187 static bool equals(oop str1, oop str2);
188 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
189
190 // Conversion between '.' and '/' formats, and allocate a String from the result.
191 static Handle externalize_classname(Symbol* java_name, TRAPS);
192
193 // Conversion
194 static Symbol* as_symbol(oop java_string);
195 static Symbol* as_symbol_or_null(oop java_string);
196
197 // Tester
198 static inline bool is_instance(oop obj);
199
200 // Debugging
201 static void print(oop java_string, outputStream* st, int max_length = MaxStringPrintSize);
202 friend class JavaClasses;
203 friend class StringTable;
204 };
205
206
207 // Interface to java.lang.Class objects
208
209 #define CLASS_INJECTED_FIELDS(macro) \
210 macro(java_lang_Class, klass, intptr_signature, false) \
211 macro(java_lang_Class, array_klass, intptr_signature, false) \
212 macro(java_lang_Class, oop_size, int_signature, false) \
213 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
214 macro(java_lang_Class, protection_domain, object_signature, false) \
215 macro(java_lang_Class, source_file, object_signature, false) \
216 macro(java_lang_Class, init_lock, object_signature, false)
217
218 class java_lang_Class : AllStatic {
219 friend class VMStructs;
220 friend class JVMCIVMStructs;
221
222 private:
223
224 // The fake offsets are added by the class loader when java.lang.Class is loaded
225
226 static int _klass_offset;
227 static int _array_klass_offset;
228
229 static int _oop_size_offset;
230 static int _static_oop_field_count_offset;
231
232 static int _protection_domain_offset;
233 static int _init_lock_offset;
234 static int _signers_offset;
235 static int _class_loader_offset;
236 static int _module_offset;
237 static int _component_mirror_offset;
238 static int _name_offset;
239 static int _source_file_offset;
240 static int _classData_offset;
241 static int _classRedefinedCount_offset;
242
243 static bool _offsets_computed;
244
245 static GrowableArray<Klass*>* _fixup_mirror_list;
246 static GrowableArray<Klass*>* _fixup_module_field_list;
247
248 static void set_init_lock(oop java_class, oop init_lock);
249 static void set_protection_domain(oop java_class, oop protection_domain);
250 static void set_class_loader(oop java_class, oop class_loader);
251 static void set_component_mirror(oop java_class, oop comp_mirror);
252 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
253 Handle classData, TRAPS);
254 static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
255 public:
256 static void allocate_fixup_lists();
257 static void compute_offsets();
258
259 // Instance creation
260 static void allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
261 Handle& mirror, Handle& comp_mirror, TRAPS); // returns mirror and comp_mirror
262 static void create_mirror(Klass* k, Handle class_loader, Handle module,
263 Handle protection_domain, Handle classData, TRAPS);
264 static void fixup_mirror(Klass* k, TRAPS);
265 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
266
267 // Archiving
268 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
269 static void create_scratch_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
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 = nullptr);
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 // Support for classRedefinedCount field
296 static int classRedefinedCount(oop the_class_mirror);
297 static void set_classRedefinedCount(oop the_class_mirror, int value);
298
299 // Support for embedded per-class oops
300 static oop protection_domain(oop java_class);
301 static oop init_lock(oop java_class);
302 static void clear_init_lock(oop java_class) {
303 set_init_lock(java_class, nullptr);
304 }
305 static oop component_mirror(oop java_class);
306 static objArrayOop signers(oop java_class);
307 static oop class_data(oop java_class);
308 static void set_class_data(oop java_class, oop classData);
309
310 static int component_mirror_offset() { return _component_mirror_offset; }
311
312 static oop class_loader(oop java_class);
313 static void set_module(oop java_class, oop module);
314 static oop module(oop java_class);
315
316 static oop name(Handle java_class, TRAPS);
317
318 static oop source_file(oop java_class);
319 static void set_source_file(oop java_class, oop source_file);
320
321 static size_t oop_size(oop java_class);
322 static void set_oop_size(HeapWord* java_class, size_t size);
323 static int static_oop_field_count(oop java_class);
324 static void set_static_oop_field_count(oop java_class, int size);
325
326 static GrowableArray<Klass*>* fixup_mirror_list() {
327 return _fixup_mirror_list;
328 }
329 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
330 _fixup_mirror_list = v;
331 }
332
333 static GrowableArray<Klass*>* fixup_module_field_list() {
334 return _fixup_module_field_list;
335 }
336 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
337 _fixup_module_field_list = v;
338 }
339
340 // Debugging
341 friend class JavaClasses;
342 };
343
344 // Interface to java.lang.Thread objects
345
346 #define THREAD_INJECTED_FIELDS(macro) \
347 macro(java_lang_Thread, jvmti_thread_state, intptr_signature, false) \
348 macro(java_lang_Thread, jvmti_VTMS_transition_disable_count, int_signature, false) \
349 macro(java_lang_Thread, jvmti_is_in_VTMS_transition, bool_signature, false) \
350 JFR_ONLY(macro(java_lang_Thread, jfr_epoch, short_signature, false))
351
352 class java_lang_Thread : AllStatic {
353 friend class java_lang_VirtualThread;
354 friend class JVMCIVMStructs;
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 _jvmti_VTMS_transition_disable_count_offset;
365 static int _jvmti_is_in_VTMS_transition_offset;
366 static int _interrupted_offset;
367 static int _interruptLock_offset;
368 static int _tid_offset;
369 static int _continuation_offset;
370 static int _park_blocker_offset;
371 static int _scopedValueBindings_offset;
372 JFR_ONLY(static int _jfr_epoch_offset;)
373
374 static void compute_offsets();
375
376 public:
377 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
378
379 // Returns the JavaThread associated with the thread obj
380 static JavaThread* thread(oop java_thread);
381 static JavaThread* thread_acquire(oop java_thread);
382 // Set JavaThread for instance
383 static void set_thread(oop java_thread, JavaThread* thread);
384 static void release_set_thread(oop java_thread, JavaThread* thread);
385 // FieldHolder
386 static oop holder(oop java_thread);
387 // interruptLock
388 static oop interrupt_lock(oop java_thread);
389 // Interrupted status
390 static bool interrupted(oop java_thread);
391 static void set_interrupted(oop java_thread, bool val);
392 // Name
393 static oop name(oop java_thread);
394 static void set_name(oop java_thread, oop name);
395 // Priority
396 static ThreadPriority priority(oop java_thread);
397 static void set_priority(oop java_thread, ThreadPriority priority);
398 // Thread group
399 static oop threadGroup(oop java_thread);
400 // Alive (NOTE: this is not really a field, but provides the correct
401 // definition without doing a Java call)
402 static bool is_alive(oop java_thread);
403 // Daemon
404 static bool is_daemon(oop java_thread);
405 static void set_daemon(oop java_thread);
406 // Context ClassLoader
407 static oop context_class_loader(oop java_thread);
408 // Control context
409 static oop inherited_access_control_context(oop java_thread);
410 // Stack size hint
411 static jlong stackSize(oop java_thread);
412 // Thread ID
413 static int64_t thread_id(oop java_thread);
414 static ByteSize thread_id_offset();
415 // Continuation
416 static inline oop continuation(oop java_thread);
417
418 static JvmtiThreadState* jvmti_thread_state(oop java_thread);
419 static void set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state);
420 static int VTMS_transition_disable_count(oop java_thread);
421 static void inc_VTMS_transition_disable_count(oop java_thread);
422 static void dec_VTMS_transition_disable_count(oop java_thread);
423 static bool is_in_VTMS_transition(oop java_thread);
424 static void set_is_in_VTMS_transition(oop java_thread, bool val);
425 static int is_in_VTMS_transition_offset();
426
427 // Clear all scoped value bindings on error
428 static void clear_scopedValueBindings(oop java_thread);
429
430 // Blocker object responsible for thread parking
431 static oop park_blocker(oop java_thread);
432
433 // Write thread status info to threadStatus field of java.lang.Thread.
434 static void set_thread_status(oop java_thread_oop, JavaThreadStatus status);
435 // Read thread status info from threadStatus field of java.lang.Thread.
436 static JavaThreadStatus get_thread_status(oop java_thread_oop);
437
438 static const char* thread_status_name(oop java_thread_oop);
439
440 // Fill in current stack trace, can cause GC
441 static oop async_get_stack_trace(oop java_thread, TRAPS);
442
443 JFR_ONLY(static u2 jfr_epoch(oop java_thread);)
444 JFR_ONLY(static void set_jfr_epoch(oop java_thread, u2 epoch);)
445 JFR_ONLY(static int jfr_epoch_offset() { CHECK_INIT(_jfr_epoch_offset); })
446
447 // Debugging
448 friend class JavaClasses;
449 };
450
451 // Interface to java.lang.Thread$FieldHolder objects
452
453 class java_lang_Thread_FieldHolder : AllStatic {
454 private:
455 static int _group_offset;
456 static int _priority_offset;
457 static int _stackSize_offset;
458 static int _daemon_offset;
459 static int _thread_status_offset;
460
461 static void compute_offsets();
462
463 public:
464 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
465
466 static oop threadGroup(oop holder);
467
468 static ThreadPriority priority(oop holder);
469 static void set_priority(oop holder, ThreadPriority priority);
470
471 static jlong stackSize(oop holder);
472
473 static bool is_daemon(oop holder);
474 static void set_daemon(oop holder, bool val);
475
476 static void set_thread_status(oop holder, JavaThreadStatus status);
477 static JavaThreadStatus get_thread_status(oop holder);
478
479 friend class JavaClasses;
480 };
481
482 // Interface to java.lang.Thread$Constants objects
483
484 class java_lang_Thread_Constants : AllStatic {
485 private:
486 static int _static_VTHREAD_GROUP_offset;
487 static int _static_NOT_SUPPORTED_CLASSLOADER_offset;
488
489 static void compute_offsets();
490 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
491
492 public:
493 static oop get_VTHREAD_GROUP();
494
495 friend class JavaClasses;
496 };
497
498 // Interface to java.lang.ThreadGroup objects
499
500 class java_lang_ThreadGroup : AllStatic {
501 private:
502 static int _parent_offset;
503 static int _name_offset;
504 static int _maxPriority_offset;
505 static int _daemon_offset;
506
507 static void compute_offsets();
508 public:
509 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
510
511 // parent ThreadGroup
512 static oop parent(oop java_thread_group);
513 // name
514 static const char* name(oop java_thread_group);
515 // maxPriority in group
516 static ThreadPriority maxPriority(oop java_thread_group);
517 // Daemon
518 static bool is_daemon(oop java_thread_group);
519
520 // Debugging
521 friend class JavaClasses;
522 };
523
524
525 // Interface to java.lang.VirtualThread objects
526
527 class java_lang_VirtualThread : AllStatic {
528 private:
529 static int static_vthread_scope_offset;
530 static int _carrierThread_offset;
531 static int _continuation_offset;
532 static int _state_offset;
533 JFR_ONLY(static int _jfr_epoch_offset;)
534 public:
535 enum {
536 NEW = 0,
537 STARTED = 1,
538 RUNNING = 2,
539 PARKING = 3,
540 PARKED = 4,
541 PINNED = 5,
542 TIMED_PARKING = 6,
543 TIMED_PARKED = 7,
544 TIMED_PINNED = 8,
545 UNPARKED = 9,
546 YIELDING = 10,
547 YIELDED = 11,
548 TERMINATED = 99,
549
550 // additional state bits
551 SUSPENDED = 1 << 8, // suspended when unmounted
552 };
553
554 static void compute_offsets();
555 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
556
557 // Testers
558 static bool is_subclass(Klass* klass) {
559 return klass->is_subclass_of(vmClasses::VirtualThread_klass());
560 }
561 static bool is_instance(oop obj);
562
563 static oop vthread_scope();
564 static oop carrier_thread(oop vthread);
565 static oop continuation(oop vthread);
566 static int state(oop vthread);
567 static JavaThreadStatus map_state_to_thread_status(int state);
568 };
569
570
571 // Interface to java.lang.Throwable objects
572
573 class java_lang_Throwable: AllStatic {
574 friend class BacktraceBuilder;
575 friend class BacktraceIterator;
576
577 private:
578 // Trace constants
579 enum {
580 trace_methods_offset = 0,
581 trace_bcis_offset = 1,
582 trace_mirrors_offset = 2,
583 trace_names_offset = 3,
584 trace_conts_offset = 4,
585 trace_next_offset = 5,
586 trace_hidden_offset = 6,
587 trace_size = 7,
588 trace_chunk_size = 32
589 };
590
591 static int _backtrace_offset;
592 static int _detailMessage_offset;
593 static int _stackTrace_offset;
594 static int _depth_offset;
595 static int _cause_offset;
596 static int _static_unassigned_stacktrace_offset;
597
598 // StackTrace (programmatic access, new since 1.4)
599 static void clear_stacktrace(oop throwable);
600 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
601 static void set_stacktrace(oop throwable, oop st_element_array);
602 static oop unassigned_stacktrace();
603
604 public:
605 // Backtrace
606 static oop backtrace(oop throwable);
607 static void set_backtrace(oop throwable, oop value);
608 static int depth(oop throwable);
609 static void set_depth(oop throwable, int value);
610 // Message
611 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
612 static oop message(oop throwable);
613 static const char* message_as_utf8(oop throwable);
614 static void set_message(oop throwable, oop value);
615
616 static oop cause(oop throwable);
617
618 static void print_stack_element(outputStream *st, Method* method, int bci);
619
620 static void compute_offsets();
621 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
622
623 // Allocate space for backtrace (created but stack trace not filled in)
624 static void allocate_backtrace(Handle throwable, TRAPS);
625 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
626 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
627 // Fill in current stack trace, can cause GC
628 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
629 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
630
631 // Programmatic access to stack trace
632 static void get_stack_trace_elements(int depth, Handle backtrace, objArrayHandle stack_trace, TRAPS);
633
634 // For recreating class initialization error exceptions.
635 static Handle create_initialization_error(JavaThread* current, Handle throwable);
636
637 // Printing
638 static void print(oop throwable, outputStream* st);
639 static void print_stack_trace(Handle throwable, outputStream* st);
640 static void java_printStackTrace(Handle throwable, TRAPS);
641 // Debugging
642 friend class JavaClasses;
643 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
644 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
645 };
646
647
648 // Interface to java.lang.reflect.AccessibleObject objects
649
650 class java_lang_reflect_AccessibleObject: AllStatic {
651 private:
652 // Note that to reduce dependencies on the JDK we compute these
653 // offsets at run-time.
654 static int _override_offset;
655
656 static void compute_offsets();
657
658 public:
659 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
660
661 // Accessors
662 static jboolean override(oop reflect);
663 static void set_override(oop reflect, jboolean value);
664
665 // Debugging
666 friend class JavaClasses;
667 };
668
669
670 // Interface to java.lang.reflect.Method objects
671
672 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
673 private:
674 // Note that to reduce dependencies on the JDK we compute these
675 // offsets at run-time.
676 static int _clazz_offset;
677 static int _name_offset;
678 static int _returnType_offset;
679 static int _parameterTypes_offset;
680 static int _exceptionTypes_offset;
681 static int _slot_offset;
682 static int _modifiers_offset;
683 static int _signature_offset;
684 static int _annotations_offset;
685 static int _parameter_annotations_offset;
686 static int _annotation_default_offset;
687
688 static void compute_offsets();
689 public:
690 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
691
692 // Allocation
693 static Handle create(TRAPS);
694
695 // Accessors
696 static oop clazz(oop reflect);
697 static void set_clazz(oop reflect, oop value);
698
699 static void set_name(oop method, oop value);
700
701 static oop return_type(oop method);
702 static void set_return_type(oop method, oop value);
703
704 static oop parameter_types(oop method);
705 static void set_parameter_types(oop method, oop value);
706
707 static int slot(oop reflect);
708 static void set_slot(oop reflect, int value);
709
710 static void set_exception_types(oop method, oop value);
711 static void set_modifiers(oop method, int value);
712 static void set_signature(oop method, oop value);
713 static void set_annotations(oop method, oop value);
714 static void set_parameter_annotations(oop method, oop value);
715 static void set_annotation_default(oop method, oop value);
716
717 // Debugging
718 friend class JavaClasses;
719 };
720
721
722 // Interface to java.lang.reflect.Constructor objects
723
724 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
725 private:
726 // Note that to reduce dependencies on the JDK we compute these
727 // offsets at run-time.
728 static int _clazz_offset;
729 static int _parameterTypes_offset;
730 static int _exceptionTypes_offset;
731 static int _slot_offset;
732 static int _modifiers_offset;
733 static int _signature_offset;
734 static int _annotations_offset;
735 static int _parameter_annotations_offset;
736
737 static void compute_offsets();
738 public:
739 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
740
741 // Allocation
742 static Handle create(TRAPS);
743
744 // Accessors
745 static oop clazz(oop reflect);
746 static void set_clazz(oop reflect, oop value);
747
748 static oop parameter_types(oop constructor);
749 static void set_parameter_types(oop constructor, oop value);
750
751 static int slot(oop reflect);
752 static void set_slot(oop reflect, int value);
753
754 static void set_exception_types(oop constructor, oop value);
755 static void set_modifiers(oop constructor, int value);
756 static void set_signature(oop constructor, oop value);
757 static void set_annotations(oop constructor, oop value);
758 static void set_parameter_annotations(oop method, oop value);
759
760 // Debugging
761 friend class JavaClasses;
762 };
763
764
765 // Interface to java.lang.reflect.Field objects
766
767 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
768 private:
769 // Note that to reduce dependencies on the JDK we compute these
770 // offsets at run-time.
771 static int _clazz_offset;
772 static int _name_offset;
773 static int _type_offset;
774 static int _slot_offset;
775 static int _modifiers_offset;
776 static int _trusted_final_offset;
777 static int _signature_offset;
778 static int _annotations_offset;
779
780 static void compute_offsets();
781
782 public:
783 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
784
785 // Allocation
786 static Handle create(TRAPS);
787
788 // Accessors
789 static oop clazz(oop reflect);
790 static void set_clazz(oop reflect, oop value);
791
792 static oop name(oop field);
793 static void set_name(oop field, oop value);
794
795 static oop type(oop field);
796 static void set_type(oop field, oop value);
797
798 static int slot(oop reflect);
799 static void set_slot(oop reflect, int value);
800
801 static int modifiers(oop field);
802 static void set_modifiers(oop field, int value);
803
804 static void set_trusted_final(oop field);
805
806 static void set_signature(oop constructor, oop value);
807 static void set_annotations(oop constructor, oop value);
808
809 // Debugging
810 friend class JavaClasses;
811 };
812
813 class java_lang_reflect_Parameter {
814 private:
815 // Note that to reduce dependencies on the JDK we compute these
816 // offsets at run-time.
817 static int _name_offset;
818 static int _modifiers_offset;
819 static int _index_offset;
820 static int _executable_offset;
821
822 static void compute_offsets();
823
824 public:
825 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
826
827 // Allocation
828 static Handle create(TRAPS);
829
830 // Accessors
831 static oop name(oop field);
832 static void set_name(oop field, oop value);
833
834 static int index(oop reflect);
835 static void set_index(oop reflect, int value);
836
837 static int modifiers(oop reflect);
838 static void set_modifiers(oop reflect, int value);
839
840 static oop executable(oop constructor);
841 static void set_executable(oop constructor, oop value);
842
843 friend class JavaClasses;
844 };
845
846 #define MODULE_INJECTED_FIELDS(macro) \
847 macro(java_lang_Module, module_entry, intptr_signature, false)
848
849 class java_lang_Module {
850 private:
851 static int _loader_offset;
852 static int _name_offset;
853 static int _module_entry_offset;
854
855 static void compute_offsets();
856
857 public:
858 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
859
860 // Allocation
861 static Handle create(Handle loader, Handle module_name, TRAPS);
862
863 // Testers
864 static bool is_instance(oop obj);
865
866 // Accessors
867 static oop loader(oop module);
868 static void set_loader(oop module, oop value);
869
870 // CDS
871 static int module_entry_offset() { return _module_entry_offset; }
872
873 static oop name(oop module);
874 static void set_name(oop module, oop value);
875
876 static ModuleEntry* module_entry(oop module);
877 static ModuleEntry* module_entry_raw(oop module);
878 static void set_module_entry(oop module, ModuleEntry* module_entry);
879
880 friend class JavaClasses;
881 };
882
883 // Interface to jdk.internal.reflect.ConstantPool objects
884 class reflect_ConstantPool {
885 private:
886 // Note that to reduce dependencies on the JDK we compute these
887 // offsets at run-time.
888 static int _oop_offset;
889
890 static void compute_offsets();
891
892 public:
893 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
894
895 // Allocation
896 static Handle create(TRAPS);
897
898 // Accessors
899 static void set_cp(oop reflect, ConstantPool* value);
900 static int oop_offset() { CHECK_INIT(_oop_offset); }
901
902 static ConstantPool* get_cp(oop reflect);
903
904 // Debugging
905 friend class JavaClasses;
906 };
907
908
909 // Interface to java.lang primitive type boxing objects:
910 // - java.lang.Boolean
911 // - java.lang.Character
912 // - java.lang.Float
913 // - java.lang.Double
914 // - java.lang.Byte
915 // - java.lang.Short
916 // - java.lang.Integer
917 // - java.lang.Long
918
919 // This could be separated out into 8 individual classes.
920
921 class java_lang_boxing_object: AllStatic {
922 private:
923 static int _value_offset;
924 static int _long_value_offset;
925
926 static void compute_offsets();
927 static oop initialize_and_allocate(BasicType type, TRAPS);
928 public:
929 // Allocation. Returns a boxed value, or null for invalid type.
930 static oop create(BasicType type, jvalue* value, TRAPS);
931 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
932 static BasicType get_value(oop box, jvalue* value);
933 static BasicType set_value(oop box, jvalue* value);
934 static BasicType basic_type(oop box);
935 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
936 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
937 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
938 static void print(BasicType type, jvalue* value, outputStream* st);
939
940 static int value_offset(BasicType type) {
941 return is_double_word_type(type) ? _long_value_offset : _value_offset;
942 }
943
944 static void serialize_offsets(SerializeClosure* f);
945
946 // Debugging
947 friend class JavaClasses;
948 };
949
950
951
952 // Interface to java.lang.ref.Reference objects
953
954 class java_lang_ref_Reference: AllStatic {
955 static int _referent_offset;
956 static int _queue_offset;
957 static int _next_offset;
958 static int _discovered_offset;
959
960 static bool _offsets_initialized;
961
962 public:
963 // Accessors
964 static inline oop weak_referent_no_keepalive(oop ref);
965 static inline oop weak_referent(oop ref);
966 static inline oop phantom_referent_no_keepalive(oop ref);
967 static inline oop unknown_referent_no_keepalive(oop ref);
968 static inline void clear_referent(oop ref);
969 static inline void clear_referent_raw(oop ref);
970 static inline HeapWord* referent_addr_raw(oop ref);
971 static inline oop next(oop ref);
972 static inline void set_next(oop ref, oop value);
973 static inline void set_next_raw(oop ref, oop value);
974 static inline HeapWord* next_addr_raw(oop ref);
975 static inline oop discovered(oop ref);
976 static inline void set_discovered(oop ref, oop value);
977 static inline void set_discovered_raw(oop ref, oop value);
978 static inline HeapWord* discovered_addr_raw(oop ref);
979 static bool is_referent_field(oop obj, ptrdiff_t offset);
980 static inline bool is_final(oop ref);
981 static inline bool is_phantom(oop ref);
982 static inline bool is_weak(oop ref);
983 static inline bool is_soft(oop ref);
984
985 static int referent_offset() { CHECK_INIT(_referent_offset); }
986 static int queue_offset() { CHECK_INIT(_queue_offset); }
987 static int next_offset() { CHECK_INIT(_next_offset); }
988 static int discovered_offset() { CHECK_INIT(_discovered_offset); }
989
990 static void compute_offsets();
991 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
992 };
993
994
995 // Interface to java.lang.ref.SoftReference objects
996
997 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
998 static int _timestamp_offset;
999 static int _static_clock_offset;
1000
1001 public:
1002 // Accessors
1003 static jlong timestamp(oop ref);
1004
1005 // Accessors for statics
1006 static jlong clock();
1007 static void set_clock(jlong value);
1008
1009 static void compute_offsets();
1010 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1011 };
1012
1013 // Interface to java.lang.invoke.MethodHandle objects
1014
1015 class java_lang_invoke_MethodHandle: AllStatic {
1016 friend class JavaClasses;
1017
1018 private:
1019 static int _type_offset; // the MethodType of this MH
1020 static int _form_offset; // the LambdaForm of this MH
1021
1022 static void compute_offsets();
1023
1024 public:
1025 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1026
1027 // Accessors
1028 static oop type(oop mh);
1029 static void set_type(oop mh, oop mtype);
1030
1031 static oop form(oop mh);
1032 static void set_form(oop mh, oop lform);
1033
1034 // Testers
1035 static bool is_subclass(Klass* klass) {
1036 return klass->is_subclass_of(vmClasses::MethodHandle_klass());
1037 }
1038 static bool is_instance(oop obj);
1039
1040 // Accessors for code generation:
1041 static int type_offset() { CHECK_INIT(_type_offset); }
1042 static int form_offset() { CHECK_INIT(_form_offset); }
1043 };
1044
1045 // Interface to java.lang.invoke.DirectMethodHandle objects
1046
1047 class java_lang_invoke_DirectMethodHandle: AllStatic {
1048 friend class JavaClasses;
1049
1050 private:
1051 static int _member_offset; // the MemberName of this DMH
1052
1053 static void compute_offsets();
1054
1055 public:
1056 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1057
1058 // Accessors
1059 static oop member(oop mh);
1060
1061 // Testers
1062 static bool is_subclass(Klass* klass) {
1063 return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass());
1064 }
1065 static bool is_instance(oop obj);
1066
1067 // Accessors for code generation:
1068 static int member_offset() { CHECK_INIT(_member_offset); }
1069 };
1070
1071 // Interface to java.lang.invoke.LambdaForm objects
1072 // (These are a private interface for managing adapter code generation.)
1073
1074 class java_lang_invoke_LambdaForm: AllStatic {
1075 friend class JavaClasses;
1076
1077 private:
1078 static int _vmentry_offset; // type is MemberName
1079
1080 static void compute_offsets();
1081
1082 public:
1083 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1084
1085 // Accessors
1086 static oop vmentry(oop lform);
1087
1088 // Testers
1089 static bool is_subclass(Klass* klass) {
1090 return vmClasses::LambdaForm_klass() != nullptr &&
1091 klass->is_subclass_of(vmClasses::LambdaForm_klass());
1092 }
1093 static bool is_instance(oop obj);
1094
1095 // Accessors for code generation:
1096 static int vmentry_offset() { CHECK_INIT(_vmentry_offset); }
1097 };
1098
1099 // Interface to java.lang.invoke.NativeEntryPoint objects
1100 // (These are a private interface for managing adapter code generation.)
1101
1102 class jdk_internal_foreign_abi_NativeEntryPoint: AllStatic {
1103 friend class JavaClasses;
1104
1105 private:
1106 static int _method_type_offset;
1107 static int _downcall_stub_address_offset;
1108
1109 static void compute_offsets();
1110
1111 public:
1112 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1113
1114 // Accessors
1115 static oop method_type(oop entry);
1116 static jlong downcall_stub_address(oop entry);
1117
1118 // Testers
1119 static bool is_subclass(Klass* klass) {
1120 return vmClasses::NativeEntryPoint_klass() != nullptr &&
1121 klass->is_subclass_of(vmClasses::NativeEntryPoint_klass());
1122 }
1123 static bool is_instance(oop obj);
1124
1125 // Accessors for code generation:
1126 static int method_type_offset_in_bytes() { return _method_type_offset; }
1127 static int downcall_stub_address_offset_in_bytes() { return _downcall_stub_address_offset; }
1128 };
1129
1130 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic {
1131 friend class JavaClasses;
1132
1133 private:
1134 static int _inputStorage_offset;
1135 static int _outputStorage_offset;
1136 static int _volatileStorage_offset;
1137 static int _stackAlignment_offset;
1138 static int _shadowSpace_offset;
1139 static int _scratch1_offset;
1140 static int _scratch2_offset;
1141
1142 static void compute_offsets();
1143
1144 public:
1145 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1146
1147 // Accessors
1148 static objArrayOop inputStorage(oop entry);
1149 static objArrayOop outputStorage(oop entry);
1150 static objArrayOop volatileStorage(oop entry);
1151 static jint stackAlignment(oop entry);
1152 static jint shadowSpace(oop entry);
1153 static oop scratch1(oop entry);
1154 static oop scratch2(oop entry);
1155
1156 // Testers
1157 static bool is_subclass(Klass* klass) {
1158 return vmClasses::ABIDescriptor_klass() != nullptr &&
1159 klass->is_subclass_of(vmClasses::ABIDescriptor_klass());
1160 }
1161 static bool is_instance(oop obj);
1162 };
1163
1164 class jdk_internal_foreign_abi_VMStorage: AllStatic {
1165 friend class JavaClasses;
1166
1167 private:
1168 static int _type_offset;
1169 static int _indexOrOffset_offset;
1170 static int _segmentMaskOrSize_offset;
1171 static int _debugName_offset;
1172
1173 static void compute_offsets();
1174
1175 public:
1176 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1177
1178 // Accessors
1179 static jbyte type(oop entry);
1180 static jint index_or_offset(oop entry);
1181 static jshort segment_mask_or_size(oop entry);
1182 static oop debugName(oop entry);
1183
1184 // Testers
1185 static bool is_subclass(Klass* klass) {
1186 return vmClasses::VMStorage_klass() != nullptr &&
1187 klass->is_subclass_of(vmClasses::VMStorage_klass());
1188 }
1189 static bool is_instance(oop obj);
1190 };
1191
1192 class jdk_internal_foreign_abi_CallConv: AllStatic {
1193 friend class JavaClasses;
1194
1195 private:
1196 static int _argRegs_offset;
1197 static int _retRegs_offset;
1198
1199 static void compute_offsets();
1200
1201 public:
1202 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1203
1204 // Accessors
1205 static objArrayOop argRegs(oop entry);
1206 static objArrayOop retRegs(oop entry);
1207
1208 // Testers
1209 static bool is_subclass(Klass* klass) {
1210 return vmClasses::CallConv_klass() != nullptr &&
1211 klass->is_subclass_of(vmClasses::CallConv_klass());
1212 }
1213 static bool is_instance(oop obj);
1214 };
1215
1216 // Interface to java.lang.invoke.MemberName objects
1217 // (These are a private interface for Java code to query the class hierarchy.)
1218
1219 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
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_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_HIDDEN_MEMBER = 0x00400000, // @Hidden annotation detected
1309 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1310 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1311 MN_NESTMATE_CLASS = 0x00000001,
1312 MN_HIDDEN_CLASS = 0x00000002,
1313 MN_STRONG_LOADER_LINK = 0x00000004,
1314 MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1315 // Lookup modes
1316 MN_MODULE_MODE = 0x00000010,
1317 MN_UNCONDITIONAL_MODE = 0x00000020,
1318 MN_TRUSTED_MODE = -1
1319 };
1320
1321 // Accessors for code generation:
1322 static int clazz_offset() { CHECK_INIT(_clazz_offset); }
1323 static int type_offset() { CHECK_INIT(_type_offset); }
1324 static int flags_offset() { CHECK_INIT(_flags_offset); }
1325 static int method_offset() { CHECK_INIT(_method_offset); }
1326 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1327 };
1328
1329
1330 // Interface to java.lang.invoke.MethodType objects
1331
1332 class java_lang_invoke_MethodType: AllStatic {
1333 friend class JavaClasses;
1334
1335 private:
1336 static int _rtype_offset;
1337 static int _ptypes_offset;
1338
1339 static void compute_offsets();
1340
1341 public:
1342 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1343 // Accessors
1344 static oop rtype(oop mt);
1345 static objArrayOop ptypes(oop mt);
1346
1347 static oop ptype(oop mt, int index);
1348 static int ptype_count(oop mt);
1349
1350 static int ptype_slot_count(oop mt); // extra counts for long/double
1351 static int rtype_slot_count(oop mt); // extra counts for long/double
1352
1353 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1354 static void print_signature(oop mt, outputStream* st);
1355
1356 static bool is_instance(oop obj);
1357
1358 static bool equals(oop mt1, oop mt2);
1359
1360 // Accessors for code generation:
1361 static int rtype_offset() { CHECK_INIT(_rtype_offset); }
1362 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); }
1363 };
1364
1365
1366 // Interface to java.lang.invoke.CallSite objects
1367
1368 class java_lang_invoke_CallSite: AllStatic {
1369 friend class JavaClasses;
1370
1371 private:
1372 static int _target_offset;
1373 static int _context_offset;
1374
1375 static void compute_offsets();
1376
1377 public:
1378 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1379 // Accessors
1380 static oop target( oop site);
1381 static void set_target( oop site, oop target);
1382 static void set_target_volatile( oop site, oop target);
1383
1384 static oop context_no_keepalive(oop site);
1385
1386 // Testers
1387 static bool is_subclass(Klass* klass) {
1388 return klass->is_subclass_of(vmClasses::CallSite_klass());
1389 }
1390 static bool is_instance(oop obj);
1391
1392 // Accessors for code generation:
1393 static int target_offset() { CHECK_INIT(_target_offset); }
1394 static int context_offset() { CHECK_INIT(_context_offset); }
1395 };
1396
1397 // Interface to java.lang.invoke.ConstantCallSite objects
1398
1399 class java_lang_invoke_ConstantCallSite: AllStatic {
1400 friend class JavaClasses;
1401
1402 private:
1403 static int _is_frozen_offset;
1404
1405 static void compute_offsets();
1406
1407 public:
1408 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1409 // Accessors
1410 static jboolean is_frozen(oop site);
1411
1412 // Testers
1413 static bool is_subclass(Klass* klass) {
1414 return klass->is_subclass_of(vmClasses::ConstantCallSite_klass());
1415 }
1416 static bool is_instance(oop obj);
1417 };
1418
1419 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1420
1421 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1422 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1423 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1424
1425 class DependencyContext;
1426
1427 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1428 friend class JavaClasses;
1429
1430 private:
1431 static int _vmdependencies_offset;
1432 static int _last_cleanup_offset;
1433
1434 static void compute_offsets();
1435
1436 public:
1437 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1438 // Accessors
1439 static DependencyContext vmdependencies(oop context);
1440
1441 // Testers
1442 static bool is_subclass(Klass* klass) {
1443 return klass->is_subclass_of(vmClasses::Context_klass());
1444 }
1445 static bool is_instance(oop obj);
1446 };
1447
1448 // Interface to java.security.AccessControlContext objects
1449
1450 class java_security_AccessControlContext: AllStatic {
1451 private:
1452 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1453 // so we compute the offsets at startup rather than hard-wiring them.
1454 static int _context_offset;
1455 static int _privilegedContext_offset;
1456 static int _isPrivileged_offset;
1457 static int _isAuthorized_offset;
1458
1459 static void compute_offsets();
1460 public:
1461 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1462 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1463
1464 // Debugging/initialization
1465 friend class JavaClasses;
1466 };
1467
1468
1469 // Interface to java.lang.ClassLoader objects
1470
1471 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1472 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1473
1474 class java_lang_ClassLoader : AllStatic {
1475 private:
1476 static int _loader_data_offset;
1477 static int _parent_offset;
1478 static int _parallelCapable_offset;
1479 static int _name_offset;
1480 static int _nameAndId_offset;
1481 static int _unnamedModule_offset;
1482
1483 static void compute_offsets();
1484
1485 public:
1486 // Support for CDS
1487 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1488 static int loader_data_offset() { return _loader_data_offset; }
1489
1490 static ClassLoaderData* loader_data_acquire(oop loader);
1491 static ClassLoaderData* loader_data(oop loader);
1492 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1493
1494 static oop parent(oop loader);
1495 static oop parent_no_keepalive(oop loader);
1496 static oop name(oop loader);
1497 static oop nameAndId(oop loader);
1498 static bool isAncestor(oop loader, oop cl);
1499
1500 // Support for parallelCapable field
1501 static bool parallelCapable(oop the_class_mirror);
1502
1503 static bool is_trusted_loader(oop loader);
1504
1505 // Testers
1506 static bool is_subclass(Klass* klass) {
1507 return klass->is_subclass_of(vmClasses::ClassLoader_klass());
1508 }
1509 static bool is_instance(oop obj);
1510
1511 static oop unnamedModule(oop loader);
1512
1513 // Debugging
1514 friend class JavaClasses;
1515 };
1516
1517
1518 // Interface to java.lang.System objects
1519
1520 class java_lang_System : AllStatic {
1521 private:
1522 static int _static_in_offset;
1523 static int _static_out_offset;
1524 static int _static_err_offset;
1525 static int _static_security_offset;
1526 static int _static_allow_security_offset;
1527 static int _static_never_offset;
1528
1529 public:
1530 static int in_offset() { CHECK_INIT(_static_in_offset); }
1531 static int out_offset() { CHECK_INIT(_static_out_offset); }
1532 static int err_offset() { CHECK_INIT(_static_err_offset); }
1533 static bool allow_security_manager();
1534 static bool has_security_manager();
1535
1536 static void compute_offsets();
1537 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1538
1539 // Debugging
1540 friend class JavaClasses;
1541 };
1542
1543
1544 // Interface to java.lang.StackTraceElement objects
1545
1546 class java_lang_StackTraceElement: AllStatic {
1547 private:
1548 static int _declaringClassObject_offset;
1549 static int _classLoaderName_offset;
1550 static int _moduleName_offset;
1551 static int _moduleVersion_offset;
1552 static int _declaringClass_offset;
1553 static int _methodName_offset;
1554 static int _fileName_offset;
1555 static int _lineNumber_offset;
1556
1557 // Setters
1558 static void set_classLoaderName(oop element, oop value);
1559 static void set_moduleName(oop element, oop value);
1560 static void set_moduleVersion(oop element, oop value);
1561 static void set_declaringClass(oop element, oop value);
1562 static void set_methodName(oop element, oop value);
1563 static void set_fileName(oop element, oop value);
1564 static void set_lineNumber(oop element, int value);
1565 static void set_declaringClassObject(oop element, oop value);
1566
1567 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1568 const methodHandle& method, int bci,
1569 Symbol*& source, oop& source_file, int& line_number, TRAPS);
1570
1571 public:
1572 // Create an instance of StackTraceElement
1573 static oop create(const methodHandle& method, int bci, TRAPS);
1574
1575 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1576 int version, int bci, Symbol* name, TRAPS);
1577
1578 static void compute_offsets();
1579 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1580
1581 #if INCLUDE_JVMCI
1582 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1583 #endif
1584
1585 // Debugging
1586 friend class JavaClasses;
1587 };
1588
1589
1590 class Backtrace: AllStatic {
1591 public:
1592 // Helper backtrace functions to store bci|version together.
1593 static int merge_bci_and_version(int bci, int version);
1594 static int merge_mid_and_cpref(int mid, int cpref);
1595 static int bci_at(unsigned int merged);
1596 static int version_at(unsigned int merged);
1597 static int mid_at(unsigned int merged);
1598 static int cpref_at(unsigned int merged);
1599 static int get_line_number(Method* method, int bci);
1600 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1601
1602 // Debugging
1603 friend class JavaClasses;
1604 };
1605
1606 class java_lang_ClassFrameInfo: AllStatic {
1607 private:
1608 static int _classOrMemberName_offset;
1609 static int _flags_offset;
1610
1611 public:
1612 static oop classOrMemberName(oop info);
1613 static int flags(oop info);
1614
1615 // Setters
1616 static void init_class(Handle stackFrame, const methodHandle& m);
1617 static void init_method(Handle stackFrame, const methodHandle& m, TRAPS);
1618
1619 static void compute_offsets();
1620 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1621
1622 // Debugging
1623 friend class JavaClasses;
1624 };
1625
1626 // Interface to java.lang.StackFrameInfo objects
1627
1628 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1629 macro(java_lang_StackFrameInfo, version, short_signature, false)
1630
1631 class java_lang_StackFrameInfo: AllStatic {
1632 private:
1633 static int _type_offset;
1634 static int _name_offset;
1635 static int _bci_offset;
1636 static int _version_offset;
1637 static int _contScope_offset;
1638
1639 public:
1640 // Getters
1641 static oop name(oop info);
1642 static oop type(oop info);
1643 static Method* get_method(oop info);
1644
1645 // Setters
1646 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS);
1647 static void set_name(oop info, oop value);
1648 static void set_type(oop info, oop value);
1649 static void set_bci(oop info, int value);
1650
1651 static void set_version(oop info, short value);
1652 static void set_contScope(oop info, oop value);
1653
1654 static void compute_offsets();
1655 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1656
1657 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1658
1659 // Debugging
1660 friend class JavaClasses;
1661 };
1662
1663 class java_lang_LiveStackFrameInfo: AllStatic {
1664 private:
1665 static int _monitors_offset;
1666 static int _locals_offset;
1667 static int _operands_offset;
1668 static int _mode_offset;
1669
1670 public:
1671 static void set_monitors(oop info, oop value);
1672 static void set_locals(oop info, oop value);
1673 static void set_operands(oop info, oop value);
1674 static void set_mode(oop info, int value);
1675
1676 static void compute_offsets();
1677 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1678
1679 // Debugging
1680 friend class JavaClasses;
1681 };
1682
1683 // Interface to java.lang.reflect.RecordComponent objects
1684
1685 class java_lang_reflect_RecordComponent: AllStatic {
1686 private:
1687 static int _clazz_offset;
1688 static int _name_offset;
1689 static int _type_offset;
1690 static int _accessor_offset;
1691 static int _signature_offset;
1692 static int _annotations_offset;
1693 static int _typeAnnotations_offset;
1694
1695 // Setters
1696 static void set_clazz(oop element, oop value);
1697 static void set_name(oop element, oop value);
1698 static void set_type(oop element, oop value);
1699 static void set_accessor(oop element, oop value);
1700 static void set_signature(oop element, oop value);
1701 static void set_annotations(oop element, oop value);
1702 static void set_typeAnnotations(oop element, oop value);
1703
1704 public:
1705 // Create an instance of RecordComponent
1706 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1707
1708 static void compute_offsets();
1709 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1710
1711 // Debugging
1712 friend class JavaClasses;
1713 };
1714
1715
1716 // Interface to java.lang.AssertionStatusDirectives objects
1717
1718 class java_lang_AssertionStatusDirectives: AllStatic {
1719 private:
1720 static int _classes_offset;
1721 static int _classEnabled_offset;
1722 static int _packages_offset;
1723 static int _packageEnabled_offset;
1724 static int _deflt_offset;
1725
1726 public:
1727 // Setters
1728 static void set_classes(oop obj, oop val);
1729 static void set_classEnabled(oop obj, oop val);
1730 static void set_packages(oop obj, oop val);
1731 static void set_packageEnabled(oop obj, oop val);
1732 static void set_deflt(oop obj, bool val);
1733
1734 static void compute_offsets();
1735 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1736
1737 // Debugging
1738 friend class JavaClasses;
1739 };
1740
1741
1742 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1743 private:
1744 static int _owner_offset;
1745 public:
1746 static void compute_offsets();
1747 static oop get_owner_threadObj(oop obj);
1748 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1749 };
1750
1751 // Interface to jdk.internal.misc.UnsafeConsants
1752
1753 class jdk_internal_misc_UnsafeConstants : AllStatic {
1754 public:
1755 static void set_unsafe_constants();
1756 static void compute_offsets() { }
1757 static void serialize_offsets(SerializeClosure* f) { }
1758 };
1759
1760 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects
1761
1762 class vector_VectorPayload : AllStatic {
1763 private:
1764 static int _payload_offset;
1765 public:
1766 static void set_payload(oop o, oop val);
1767
1768 static void compute_offsets();
1769 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1770
1771 // Testers
1772 static bool is_subclass(Klass* klass) {
1773 return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass());
1774 }
1775 static bool is_instance(oop obj);
1776 };
1777
1778 class java_lang_Integer : AllStatic {
1779 public:
1780 static jint value(oop obj);
1781 };
1782
1783 class java_lang_Long : AllStatic {
1784 public:
1785 static jlong value(oop obj);
1786 };
1787
1788 class java_lang_Character : AllStatic {
1789 public:
1790 static jchar value(oop obj);
1791 };
1792
1793 class java_lang_Short : AllStatic {
1794 public:
1795 static jshort value(oop obj);
1796 };
1797
1798 class java_lang_Byte : AllStatic {
1799 public:
1800 static jbyte value(oop obj);
1801 };
1802
1803 class java_lang_Boolean : AllStatic {
1804 private:
1805 static int _static_TRUE_offset;
1806 static int _static_FALSE_offset;
1807 public:
1808 static Symbol* symbol();
1809 static void compute_offsets(InstanceKlass* k);
1810 static oop get_TRUE(InstanceKlass *k);
1811 static oop get_FALSE(InstanceKlass *k);
1812 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1813 static jboolean value(oop obj);
1814 };
1815
1816 class java_lang_Integer_IntegerCache : AllStatic {
1817 private:
1818 static int _static_cache_offset;
1819 public:
1820 static Symbol* symbol();
1821 static void compute_offsets(InstanceKlass* k);
1822 static objArrayOop cache(InstanceKlass *k);
1823 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1824 };
1825
1826 class java_lang_Long_LongCache : AllStatic {
1827 private:
1828 static int _static_cache_offset;
1829 public:
1830 static Symbol* symbol();
1831 static void compute_offsets(InstanceKlass* k);
1832 static objArrayOop cache(InstanceKlass *k);
1833 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1834 };
1835
1836 class java_lang_Character_CharacterCache : AllStatic {
1837 private:
1838 static int _static_cache_offset;
1839 public:
1840 static Symbol* symbol();
1841 static void compute_offsets(InstanceKlass* k);
1842 static objArrayOop cache(InstanceKlass *k);
1843 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1844 };
1845
1846 class java_lang_Short_ShortCache : AllStatic {
1847 private:
1848 static int _static_cache_offset;
1849 public:
1850 static Symbol* symbol();
1851 static void compute_offsets(InstanceKlass* k);
1852 static objArrayOop cache(InstanceKlass *k);
1853 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1854 };
1855
1856 class java_lang_Byte_ByteCache : AllStatic {
1857 private:
1858 static int _static_cache_offset;
1859 public:
1860 static Symbol* symbol();
1861 static void compute_offsets(InstanceKlass* k);
1862 static objArrayOop cache(InstanceKlass *k);
1863 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1864 };
1865
1866
1867 // Interface to java.lang.InternalError objects
1868
1869 #define INTERNALERROR_INJECTED_FIELDS(macro) \
1870 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1871
1872 class java_lang_InternalError : AllStatic {
1873 private:
1874 static int _during_unsafe_access_offset;
1875 public:
1876 static jboolean during_unsafe_access(oop internal_error);
1877 static void set_during_unsafe_access(oop internal_error);
1878 static void compute_offsets();
1879 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1880 };
1881
1882 // Use to declare fields that need to be injected into Java classes
1883 // for the JVM to use. The name_index and signature_index are
1884 // declared in vmSymbols. The may_be_java flag is used to declare
1885 // fields that might already exist in Java but should be injected if
1886 // they don't. Otherwise the field is unconditionally injected and
1887 // the JVM uses the injected one. This is to ensure that name
1888 // collisions don't occur. In general may_be_java should be false
1889 // unless there's a good reason.
1890
1891 class InjectedField {
1892 public:
1893 const vmClassID klass_id;
1894 const vmSymbolID name_index;
1895 const vmSymbolID signature_index;
1896 const bool may_be_java;
1897
1898
1899 Klass* klass() const { return vmClasses::klass_at(klass_id); }
1900 Symbol* name() const { return lookup_symbol(name_index); }
1901 Symbol* signature() const { return lookup_symbol(signature_index); }
1902
1903 int compute_offset();
1904
1905 // Find the Symbol for this index
1906 static Symbol* lookup_symbol(vmSymbolID symbol_index) {
1907 return Symbol::vm_symbol_at(symbol_index);
1908 }
1909 };
1910
1911
1912 // Interface to hard-coded offset checking
1913
1914 enum class InjectedFieldID : int;
1915
1916 class JavaClasses : AllStatic {
1917 private:
1918
1919 static InjectedField _injected_fields[];
1920
1921 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1922 public:
1923
1924 static int compute_injected_offset(InjectedFieldID id);
1925
1926 static void compute_offsets();
1927 static void check_offsets() PRODUCT_RETURN;
1928 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1929 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1930 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1931
1932 static void compute_offset(int &dest_offset,
1933 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
1934 bool is_static = false);
1935 static void compute_offset(int& dest_offset, InstanceKlass* ik,
1936 const char* name_string, Symbol* signature_symbol,
1937 bool is_static = false);
1938 };
1939
1940 #undef CHECK_INIT
1941
1942 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP