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.
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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 _init_lock_offset;
230 static int _signers_offset;
231 static int _class_loader_offset;
232 static int _module_offset;
233 static int _component_mirror_offset;
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_init_lock(oop java_class, oop init_lock);
245 static void set_protection_domain(oop java_class, oop protection_domain);
246 static void set_class_loader(oop java_class, oop class_loader);
247 static void set_component_mirror(oop java_class, oop comp_mirror);
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 // Support for classRedefinedCount field
292 static int classRedefinedCount(oop the_class_mirror);
293 static void set_classRedefinedCount(oop the_class_mirror, int value);
294
295 // Support for embedded per-class oops
296 static oop protection_domain(oop java_class);
297 static oop init_lock(oop java_class);
298 static void clear_init_lock(oop java_class) {
299 set_init_lock(java_class, nullptr);
300 }
301 static oop component_mirror(oop java_class);
302 static objArrayOop signers(oop java_class);
303 static void set_signers(oop java_class, objArrayOop signers);
304 static oop class_data(oop java_class);
305 static void set_class_data(oop java_class, oop classData);
306
307 static int component_mirror_offset() { return _component_mirror_offset; }
308
309 static oop class_loader(oop java_class);
310 static void set_module(oop java_class, oop module);
311 static oop module(oop java_class);
312
313 static oop name(Handle java_class, TRAPS);
314
315 static oop source_file(oop java_class);
316 static void set_source_file(oop java_class, oop source_file);
317
318 static size_t oop_size(oop java_class);
319 static void set_oop_size(HeapWord* java_class, size_t size);
320 static int static_oop_field_count(oop java_class);
321 static void set_static_oop_field_count(oop java_class, int size);
322
323 static GrowableArray<Klass*>* fixup_mirror_list() {
324 return _fixup_mirror_list;
325 }
326 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
327 _fixup_mirror_list = v;
328 }
329
330 static GrowableArray<Klass*>* fixup_module_field_list() {
331 return _fixup_module_field_list;
332 }
333 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
334 _fixup_module_field_list = v;
335 }
336
337 // Debugging
338 friend class JavaClasses;
339 };
340
341 // Interface to java.lang.Thread objects
342
343 #define THREAD_INJECTED_FIELDS(macro) \
344 macro(java_lang_Thread, jvmti_thread_state, intptr_signature, false) \
345 macro(java_lang_Thread, jvmti_VTMS_transition_disable_count, int_signature, false) \
346 macro(java_lang_Thread, jvmti_is_in_VTMS_transition, bool_signature, false) \
347 JFR_ONLY(macro(java_lang_Thread, jfr_epoch, short_signature, false))
348
349 class java_lang_Thread : AllStatic {
350 friend class java_lang_VirtualThread;
351 friend class JVMCIVMStructs;
352 private:
353 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
354 // so we compute the offsets at startup rather than hard-wiring them.
355 static int _holder_offset;
356 static int _name_offset;
357 static int _contextClassLoader_offset;
358 static int _inheritedAccessControlContext_offset;
359 static int _eetop_offset;
360 static int _jvmti_thread_state_offset;
361 static int _jvmti_VTMS_transition_disable_count_offset;
362 static int _jvmti_is_in_VTMS_transition_offset;
363 static int _interrupted_offset;
364 static int _interruptLock_offset;
365 static int _tid_offset;
366 static int _continuation_offset;
367 static int _park_blocker_offset;
368 static int _scopedValueBindings_offset;
369 JFR_ONLY(static int _jfr_epoch_offset;)
370
371 static void compute_offsets();
372
373 public:
374 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
375
376 // Returns the JavaThread associated with the thread obj
377 static JavaThread* thread(oop java_thread);
378 static JavaThread* thread_acquire(oop java_thread);
379 // Set JavaThread for instance
380 static void set_thread(oop java_thread, JavaThread* thread);
381 static void release_set_thread(oop java_thread, JavaThread* thread);
382 // FieldHolder
383 static oop holder(oop java_thread);
384 // interruptLock
385 static oop interrupt_lock(oop java_thread);
386 // Interrupted status
387 static bool interrupted(oop java_thread);
388 static void set_interrupted(oop java_thread, bool val);
389 // Name
390 static oop name(oop java_thread);
391 static void set_name(oop java_thread, oop name);
392 // Priority
393 static ThreadPriority priority(oop java_thread);
394 static void set_priority(oop java_thread, ThreadPriority priority);
395 // Thread group
396 static oop threadGroup(oop java_thread);
397 // Alive (NOTE: this is not really a field, but provides the correct
398 // definition without doing a Java call)
399 static bool is_alive(oop java_thread);
400 // Daemon
401 static bool is_daemon(oop java_thread);
402 static void set_daemon(oop java_thread);
403 // Context ClassLoader
404 static oop context_class_loader(oop java_thread);
405 // Control context
406 static oop inherited_access_control_context(oop java_thread);
407 // Stack size hint
408 static jlong stackSize(oop java_thread);
409 // Thread ID
410 static int64_t thread_id(oop java_thread);
411 static ByteSize thread_id_offset();
412 // Continuation
413 static inline oop continuation(oop java_thread);
414
415 static JvmtiThreadState* jvmti_thread_state(oop java_thread);
416 static void set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state);
417 static int VTMS_transition_disable_count(oop java_thread);
418 static void inc_VTMS_transition_disable_count(oop java_thread);
419 static void dec_VTMS_transition_disable_count(oop java_thread);
420 static bool is_in_VTMS_transition(oop java_thread);
421 static void set_is_in_VTMS_transition(oop java_thread, bool val);
422 static int is_in_VTMS_transition_offset();
423
424 // Clear all scoped value bindings on error
425 static void clear_scopedValueBindings(oop java_thread);
426
427 // Blocker object responsible for thread parking
428 static oop park_blocker(oop java_thread);
429
430 // Write thread status info to threadStatus field of java.lang.Thread.
431 static void set_thread_status(oop java_thread_oop, JavaThreadStatus status);
432 // Read thread status info from threadStatus field of java.lang.Thread.
433 static JavaThreadStatus get_thread_status(oop java_thread_oop);
434
435 static const char* thread_status_name(oop java_thread_oop);
436
437 // Fill in current stack trace, can cause GC
438 static oop async_get_stack_trace(oop java_thread, TRAPS);
439
440 JFR_ONLY(static u2 jfr_epoch(oop java_thread);)
441 JFR_ONLY(static void set_jfr_epoch(oop java_thread, u2 epoch);)
442 JFR_ONLY(static int jfr_epoch_offset() { CHECK_INIT(_jfr_epoch_offset); })
443
444 // Debugging
445 friend class JavaClasses;
446 };
447
448 // Interface to java.lang.Thread$FieldHolder objects
449
450 class java_lang_Thread_FieldHolder : AllStatic {
451 private:
452 static int _group_offset;
453 static int _priority_offset;
454 static int _stackSize_offset;
455 static int _daemon_offset;
456 static int _thread_status_offset;
457
458 static void compute_offsets();
459
460 public:
461 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
462
463 static oop threadGroup(oop holder);
464
465 static ThreadPriority priority(oop holder);
466 static void set_priority(oop holder, ThreadPriority priority);
467
468 static jlong stackSize(oop holder);
469
470 static bool is_daemon(oop holder);
471 static void set_daemon(oop holder, bool val);
472
473 static void set_thread_status(oop holder, JavaThreadStatus status);
474 static JavaThreadStatus get_thread_status(oop holder);
475
476 friend class JavaClasses;
477 };
478
479 // Interface to java.lang.Thread$Constants objects
480
481 class java_lang_Thread_Constants : AllStatic {
482 private:
483 static int _static_VTHREAD_GROUP_offset;
484 static int _static_NOT_SUPPORTED_CLASSLOADER_offset;
485
486 static void compute_offsets();
487 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
488
489 public:
490 static oop get_VTHREAD_GROUP();
491
492 friend class JavaClasses;
493 };
494
495 // Interface to java.lang.ThreadGroup objects
496
497 class java_lang_ThreadGroup : AllStatic {
498 private:
499 static int _parent_offset;
500 static int _name_offset;
501 static int _maxPriority_offset;
502 static int _daemon_offset;
503
504 static void compute_offsets();
505 public:
506 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
507
508 // parent ThreadGroup
509 static oop parent(oop java_thread_group);
510 // name
511 static const char* name(oop java_thread_group);
512 // maxPriority in group
513 static ThreadPriority maxPriority(oop java_thread_group);
514 // Daemon
515 static bool is_daemon(oop java_thread_group);
516
517 // Debugging
518 friend class JavaClasses;
519 };
520
521
522 // Interface to java.lang.VirtualThread objects
523
524 class java_lang_VirtualThread : AllStatic {
525 private:
526 static int static_vthread_scope_offset;
527 static int _carrierThread_offset;
528 static int _continuation_offset;
529 static int _state_offset;
530 JFR_ONLY(static int _jfr_epoch_offset;)
531 public:
532 enum {
533 NEW = 0,
534 STARTED = 1,
535 RUNNING = 2,
536 PARKING = 3,
537 PARKED = 4,
538 PINNED = 5,
539 TIMED_PARKING = 6,
540 TIMED_PARKED = 7,
541 TIMED_PINNED = 8,
542 UNPARKED = 9,
543 YIELDING = 10,
544 YIELDED = 11,
545 TERMINATED = 99,
546
547 // additional state bits
548 SUSPENDED = 1 << 8, // suspended when unmounted
549 };
550
551 static void compute_offsets();
552 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
553
554 // Testers
555 static bool is_subclass(Klass* klass) {
556 return klass->is_subclass_of(vmClasses::VirtualThread_klass());
557 }
558 static bool is_instance(oop obj);
559
560 static oop vthread_scope();
561 static oop carrier_thread(oop vthread);
562 static oop continuation(oop vthread);
563 static int state(oop vthread);
564 static JavaThreadStatus map_state_to_thread_status(int state);
565 };
566
567
568 // Interface to java.lang.Throwable objects
569
570 class java_lang_Throwable: AllStatic {
571 friend class BacktraceBuilder;
572 friend class BacktraceIterator;
573
574 private:
575 // Trace constants
576 enum {
577 trace_methods_offset = 0,
578 trace_bcis_offset = 1,
579 trace_mirrors_offset = 2,
580 trace_names_offset = 3,
581 trace_conts_offset = 4,
582 trace_next_offset = 5,
583 trace_hidden_offset = 6,
584 trace_size = 7,
585 trace_chunk_size = 32
586 };
587
588 static int _backtrace_offset;
589 static int _detailMessage_offset;
590 static int _stackTrace_offset;
591 static int _depth_offset;
592 static int _cause_offset;
593 static int _static_unassigned_stacktrace_offset;
594
595 // StackTrace (programmatic access, new since 1.4)
596 static void clear_stacktrace(oop throwable);
597 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
598 static void set_stacktrace(oop throwable, oop st_element_array);
599 static oop unassigned_stacktrace();
600
601 public:
602 // Backtrace
603 static oop backtrace(oop throwable);
604 static void set_backtrace(oop throwable, oop value);
605 static int depth(oop throwable);
606 static void set_depth(oop throwable, int value);
607 // Message
608 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
609 static oop message(oop throwable);
610 static const char* message_as_utf8(oop throwable);
611 static void set_message(oop throwable, oop value);
612
613 static oop cause(oop throwable);
614
615 static void print_stack_element(outputStream *st, Method* method, int bci);
616
617 static void compute_offsets();
618 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
619
620 // Allocate space for backtrace (created but stack trace not filled in)
621 static void allocate_backtrace(Handle throwable, TRAPS);
622 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
623 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
624 // Fill in current stack trace, can cause GC
625 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
626 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
627
628 // Programmatic access to stack trace
629 static void get_stack_trace_elements(int depth, Handle backtrace, objArrayHandle stack_trace, TRAPS);
630
631 // For recreating class initialization error exceptions.
632 static Handle create_initialization_error(JavaThread* current, Handle throwable);
633
634 // Printing
635 static void print(oop throwable, outputStream* st);
636 static void print_stack_trace(Handle throwable, outputStream* st);
637 static void java_printStackTrace(Handle throwable, TRAPS);
638 // Debugging
639 friend class JavaClasses;
640 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
641 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
642 };
643
644
645 // Interface to java.lang.reflect.AccessibleObject objects
646
647 class java_lang_reflect_AccessibleObject: AllStatic {
648 private:
649 // Note that to reduce dependencies on the JDK we compute these
650 // offsets at run-time.
651 static int _override_offset;
652
653 static void compute_offsets();
654
655 public:
656 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
657
658 // Accessors
659 static jboolean override(oop reflect);
660 static void set_override(oop reflect, jboolean value);
661
662 // Debugging
663 friend class JavaClasses;
664 };
665
666
667 // Interface to java.lang.reflect.Method objects
668
669 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
670 private:
671 // Note that to reduce dependencies on the JDK we compute these
672 // offsets at run-time.
673 static int _clazz_offset;
674 static int _name_offset;
675 static int _returnType_offset;
676 static int _parameterTypes_offset;
677 static int _exceptionTypes_offset;
678 static int _slot_offset;
679 static int _modifiers_offset;
680 static int _signature_offset;
681 static int _annotations_offset;
682 static int _parameter_annotations_offset;
683 static int _annotation_default_offset;
684
685 static void compute_offsets();
686 public:
687 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
688
689 // Allocation
690 static Handle create(TRAPS);
691
692 // Accessors
693 static oop clazz(oop reflect);
694 static void set_clazz(oop reflect, oop value);
695
696 static void set_name(oop method, oop value);
697
698 static oop return_type(oop method);
699 static void set_return_type(oop method, oop value);
700
701 static oop parameter_types(oop method);
702 static void set_parameter_types(oop method, oop value);
703
704 static int slot(oop reflect);
705 static void set_slot(oop reflect, int value);
706
707 static void set_exception_types(oop method, oop value);
708 static void set_modifiers(oop method, int value);
709 static void set_signature(oop method, oop value);
710 static void set_annotations(oop method, oop value);
711 static void set_parameter_annotations(oop method, oop value);
712 static void set_annotation_default(oop method, oop value);
713
714 // Debugging
715 friend class JavaClasses;
716 };
717
718
719 // Interface to java.lang.reflect.Constructor objects
720
721 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
722 private:
723 // Note that to reduce dependencies on the JDK we compute these
724 // offsets at run-time.
725 static int _clazz_offset;
726 static int _parameterTypes_offset;
727 static int _exceptionTypes_offset;
728 static int _slot_offset;
729 static int _modifiers_offset;
730 static int _signature_offset;
731 static int _annotations_offset;
732 static int _parameter_annotations_offset;
733
734 static void compute_offsets();
735 public:
736 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
737
738 // Allocation
739 static Handle create(TRAPS);
740
741 // Accessors
742 static oop clazz(oop reflect);
743 static void set_clazz(oop reflect, oop value);
744
745 static oop parameter_types(oop constructor);
746 static void set_parameter_types(oop constructor, oop value);
747
748 static int slot(oop reflect);
749 static void set_slot(oop reflect, int value);
750
751 static void set_exception_types(oop constructor, oop value);
752 static void set_modifiers(oop constructor, int value);
753 static void set_signature(oop constructor, oop value);
754 static void set_annotations(oop constructor, oop value);
755 static void set_parameter_annotations(oop method, oop value);
756
757 // Debugging
758 friend class JavaClasses;
759 };
760
761
762 // Interface to java.lang.reflect.Field objects
763
764 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
765 private:
766 // Note that to reduce dependencies on the JDK we compute these
767 // offsets at run-time.
768 static int _clazz_offset;
769 static int _name_offset;
770 static int _type_offset;
771 static int _slot_offset;
772 static int _modifiers_offset;
773 static int _trusted_final_offset;
774 static int _signature_offset;
775 static int _annotations_offset;
776
777 static void compute_offsets();
778
779 public:
780 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
781
782 // Allocation
783 static Handle create(TRAPS);
784
785 // Accessors
786 static oop clazz(oop reflect);
787 static void set_clazz(oop reflect, oop value);
788
789 static oop name(oop field);
790 static void set_name(oop field, oop value);
791
792 static oop type(oop field);
793 static void set_type(oop field, oop value);
794
795 static int slot(oop reflect);
796 static void set_slot(oop reflect, int value);
797
798 static int modifiers(oop field);
799 static void set_modifiers(oop field, int value);
800
801 static void set_trusted_final(oop field);
802
803 static void set_signature(oop constructor, oop value);
804 static void set_annotations(oop constructor, oop value);
805
806 // Debugging
807 friend class JavaClasses;
808 };
809
810 class java_lang_reflect_Parameter {
811 private:
812 // Note that to reduce dependencies on the JDK we compute these
813 // offsets at run-time.
814 static int _name_offset;
815 static int _modifiers_offset;
816 static int _index_offset;
817 static int _executable_offset;
818
819 static void compute_offsets();
820
821 public:
822 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
823
824 // Allocation
825 static Handle create(TRAPS);
826
827 // Accessors
828 static oop name(oop field);
829 static void set_name(oop field, oop value);
830
831 static int index(oop reflect);
832 static void set_index(oop reflect, int value);
833
834 static int modifiers(oop reflect);
835 static void set_modifiers(oop reflect, int value);
836
837 static oop executable(oop constructor);
838 static void set_executable(oop constructor, oop value);
839
840 friend class JavaClasses;
841 };
842
843 #define MODULE_INJECTED_FIELDS(macro) \
844 macro(java_lang_Module, module_entry, intptr_signature, false)
845
846 class java_lang_Module {
847 private:
848 static int _loader_offset;
849 static int _name_offset;
850 static int _module_entry_offset;
851
852 static void compute_offsets();
853
854 public:
855 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
856
857 // Allocation
858 static Handle create(Handle loader, Handle module_name, TRAPS);
859
860 // Testers
861 static bool is_instance(oop obj);
862
863 // Accessors
864 static oop loader(oop module);
865 static void set_loader(oop module, oop value);
866
867 // CDS
868 static int module_entry_offset() { return _module_entry_offset; }
869
870 static oop name(oop module);
871 static void set_name(oop module, oop value);
872
873 static ModuleEntry* module_entry(oop module);
874 static ModuleEntry* module_entry_raw(oop module);
875 static void set_module_entry(oop module, ModuleEntry* module_entry);
876
877 friend class JavaClasses;
878 };
879
880 // Interface to jdk.internal.reflect.ConstantPool objects
881 class reflect_ConstantPool {
882 private:
883 // Note that to reduce dependencies on the JDK we compute these
884 // offsets at run-time.
885 static int _oop_offset;
886
887 static void compute_offsets();
888
889 public:
890 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
891
892 // Allocation
893 static Handle create(TRAPS);
894
895 // Accessors
896 static void set_cp(oop reflect, ConstantPool* value);
897 static int oop_offset() { CHECK_INIT(_oop_offset); }
898
899 static ConstantPool* get_cp(oop reflect);
900
901 // Debugging
902 friend class JavaClasses;
903 };
904
905
906 // Interface to java.lang primitive type boxing objects:
907 // - java.lang.Boolean
908 // - java.lang.Character
909 // - java.lang.Float
910 // - java.lang.Double
911 // - java.lang.Byte
912 // - java.lang.Short
913 // - java.lang.Integer
914 // - java.lang.Long
915
916 // This could be separated out into 8 individual classes.
917
918 class java_lang_boxing_object: AllStatic {
919 private:
920 static int _value_offset;
921 static int _long_value_offset;
922
923 static void compute_offsets();
924 static oop initialize_and_allocate(BasicType type, TRAPS);
925 public:
926 // Allocation. Returns a boxed value, or null for invalid type.
927 static oop create(BasicType type, jvalue* value, TRAPS);
928 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
929 static BasicType get_value(oop box, jvalue* value);
930 static BasicType set_value(oop box, jvalue* value);
931 static BasicType basic_type(oop box);
932 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
933 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
934 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
935 static void print(BasicType type, jvalue* value, outputStream* st);
936
937 static int value_offset(BasicType type) {
938 return is_double_word_type(type) ? _long_value_offset : _value_offset;
939 }
940
941 static void serialize_offsets(SerializeClosure* f);
942
943 // Debugging
944 friend class JavaClasses;
945 };
946
947
948
949 // Interface to java.lang.ref.Reference objects
950
951 class java_lang_ref_Reference: AllStatic {
952 static int _referent_offset;
953 static int _queue_offset;
954 static int _next_offset;
955 static int _discovered_offset;
956
957 static bool _offsets_initialized;
958
959 public:
960 // Accessors
961 static inline oop weak_referent_no_keepalive(oop ref);
962 static inline oop weak_referent(oop ref);
963 static inline oop phantom_referent_no_keepalive(oop ref);
964 static inline oop unknown_referent_no_keepalive(oop ref);
965 static inline void clear_referent(oop ref);
966 static inline void clear_referent_raw(oop ref);
967 static inline HeapWord* referent_addr_raw(oop ref);
968 static inline oop next(oop ref);
969 static inline void set_next(oop ref, oop value);
970 static inline void set_next_raw(oop ref, oop value);
971 static inline HeapWord* next_addr_raw(oop ref);
972 static inline oop discovered(oop ref);
973 static inline void set_discovered(oop ref, oop value);
974 static inline void set_discovered_raw(oop ref, oop value);
975 static inline HeapWord* discovered_addr_raw(oop ref);
976 static bool is_referent_field(oop obj, ptrdiff_t offset);
977 static inline bool is_final(oop ref);
978 static inline bool is_phantom(oop ref);
979 static inline bool is_weak(oop ref);
980 static inline bool is_soft(oop ref);
981
982 static int referent_offset() { CHECK_INIT(_referent_offset); }
983 static int queue_offset() { CHECK_INIT(_queue_offset); }
984 static int next_offset() { CHECK_INIT(_next_offset); }
985 static int discovered_offset() { CHECK_INIT(_discovered_offset); }
986
987 static void compute_offsets();
988 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
989 };
990
991
992 // Interface to java.lang.ref.SoftReference objects
993
994 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
995 static int _timestamp_offset;
996 static int _static_clock_offset;
997
998 public:
999 // Accessors
1000 static jlong timestamp(oop ref);
1001
1002 // Accessors for statics
1003 static jlong clock();
1004 static void set_clock(jlong value);
1005
1006 static void compute_offsets();
1007 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1008 };
1009
1010 // Interface to java.lang.invoke.MethodHandle objects
1011
1012 class java_lang_invoke_MethodHandle: AllStatic {
1013 friend class JavaClasses;
1014
1015 private:
1016 static int _type_offset; // the MethodType of this MH
1017 static int _form_offset; // the LambdaForm of this MH
1018
1019 static void compute_offsets();
1020
1021 public:
1022 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1023
1024 // Accessors
1025 static oop type(oop mh);
1026 static void set_type(oop mh, oop mtype);
1027
1028 static oop form(oop mh);
1029 static void set_form(oop mh, oop lform);
1030
1031 // Testers
1032 static bool is_subclass(Klass* klass) {
1033 return klass->is_subclass_of(vmClasses::MethodHandle_klass());
1034 }
1035 static bool is_instance(oop obj);
1036
1037 // Accessors for code generation:
1038 static int type_offset() { CHECK_INIT(_type_offset); }
1039 static int form_offset() { CHECK_INIT(_form_offset); }
1040 };
1041
1042 // Interface to java.lang.invoke.DirectMethodHandle objects
1043
1044 class java_lang_invoke_DirectMethodHandle: AllStatic {
1045 friend class JavaClasses;
1046
1047 private:
1048 static int _member_offset; // the MemberName of this DMH
1049
1050 static void compute_offsets();
1051
1052 public:
1053 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1054
1055 // Accessors
1056 static oop member(oop mh);
1057
1058 // Testers
1059 static bool is_subclass(Klass* klass) {
1060 return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass());
1061 }
1062 static bool is_instance(oop obj);
1063
1064 // Accessors for code generation:
1065 static int member_offset() { CHECK_INIT(_member_offset); }
1066 };
1067
1068 // Interface to java.lang.invoke.LambdaForm objects
1069 // (These are a private interface for managing adapter code generation.)
1070
1071 class java_lang_invoke_LambdaForm: AllStatic {
1072 friend class JavaClasses;
1073
1074 private:
1075 static int _vmentry_offset; // type is MemberName
1076
1077 static void compute_offsets();
1078
1079 public:
1080 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1081
1082 // Accessors
1083 static oop vmentry(oop lform);
1084
1085 // Testers
1086 static bool is_subclass(Klass* klass) {
1087 return vmClasses::LambdaForm_klass() != nullptr &&
1088 klass->is_subclass_of(vmClasses::LambdaForm_klass());
1089 }
1090 static bool is_instance(oop obj);
1091
1092 // Accessors for code generation:
1093 static int vmentry_offset() { CHECK_INIT(_vmentry_offset); }
1094 };
1095
1096 // Interface to java.lang.invoke.NativeEntryPoint objects
1097 // (These are a private interface for managing adapter code generation.)
1098
1099 class jdk_internal_foreign_abi_NativeEntryPoint: AllStatic {
1100 friend class JavaClasses;
1101
1102 private:
1103 static int _method_type_offset;
1104 static int _downcall_stub_address_offset;
1105
1106 static void compute_offsets();
1107
1108 public:
1109 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1110
1111 // Accessors
1112 static oop method_type(oop entry);
1113 static jlong downcall_stub_address(oop entry);
1114
1115 // Testers
1116 static bool is_subclass(Klass* klass) {
1117 return vmClasses::NativeEntryPoint_klass() != nullptr &&
1118 klass->is_subclass_of(vmClasses::NativeEntryPoint_klass());
1119 }
1120 static bool is_instance(oop obj);
1121
1122 // Accessors for code generation:
1123 static int method_type_offset_in_bytes() { return _method_type_offset; }
1124 static int downcall_stub_address_offset_in_bytes() { return _downcall_stub_address_offset; }
1125 };
1126
1127 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic {
1128 friend class JavaClasses;
1129
1130 private:
1131 static int _inputStorage_offset;
1132 static int _outputStorage_offset;
1133 static int _volatileStorage_offset;
1134 static int _stackAlignment_offset;
1135 static int _shadowSpace_offset;
1136 static int _scratch1_offset;
1137 static int _scratch2_offset;
1138
1139 static void compute_offsets();
1140
1141 public:
1142 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1143
1144 // Accessors
1145 static objArrayOop inputStorage(oop entry);
1146 static objArrayOop outputStorage(oop entry);
1147 static objArrayOop volatileStorage(oop entry);
1148 static jint stackAlignment(oop entry);
1149 static jint shadowSpace(oop entry);
1150 static oop scratch1(oop entry);
1151 static oop scratch2(oop entry);
1152
1153 // Testers
1154 static bool is_subclass(Klass* klass) {
1155 return vmClasses::ABIDescriptor_klass() != nullptr &&
1156 klass->is_subclass_of(vmClasses::ABIDescriptor_klass());
1157 }
1158 static bool is_instance(oop obj);
1159 };
1160
1161 class jdk_internal_foreign_abi_VMStorage: AllStatic {
1162 friend class JavaClasses;
1163
1164 private:
1165 static int _type_offset;
1166 static int _indexOrOffset_offset;
1167 static int _segmentMaskOrSize_offset;
1168 static int _debugName_offset;
1169
1170 static void compute_offsets();
1171
1172 public:
1173 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1174
1175 // Accessors
1176 static jbyte type(oop entry);
1177 static jint index_or_offset(oop entry);
1178 static jshort segment_mask_or_size(oop entry);
1179 static oop debugName(oop entry);
1180
1181 // Testers
1182 static bool is_subclass(Klass* klass) {
1183 return vmClasses::VMStorage_klass() != nullptr &&
1184 klass->is_subclass_of(vmClasses::VMStorage_klass());
1185 }
1186 static bool is_instance(oop obj);
1187 };
1188
1189 class jdk_internal_foreign_abi_CallConv: AllStatic {
1190 friend class JavaClasses;
1191
1192 private:
1193 static int _argRegs_offset;
1194 static int _retRegs_offset;
1195
1196 static void compute_offsets();
1197
1198 public:
1199 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1200
1201 // Accessors
1202 static objArrayOop argRegs(oop entry);
1203 static objArrayOop retRegs(oop entry);
1204
1205 // Testers
1206 static bool is_subclass(Klass* klass) {
1207 return vmClasses::CallConv_klass() != nullptr &&
1208 klass->is_subclass_of(vmClasses::CallConv_klass());
1209 }
1210 static bool is_instance(oop obj);
1211 };
1212
1213 // Interface to java.lang.invoke.MemberName objects
1214 // (These are a private interface for Java code to query the class hierarchy.)
1215
1216 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1217 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1218
1219 class java_lang_invoke_ResolvedMethodName : AllStatic {
1220 friend class JavaClasses;
1221
1222 static int _vmtarget_offset;
1223 static int _vmholder_offset;
1224
1225 static void compute_offsets();
1226 public:
1227 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1228
1229 static int vmtarget_offset() { CHECK_INIT(_vmtarget_offset); }
1230
1231 static Method* vmtarget(oop resolved_method);
1232 static void set_vmtarget(oop resolved_method, Method* method);
1233
1234 static void set_vmholder(oop resolved_method, oop holder);
1235
1236 // find or create resolved member name
1237 static oop find_resolved_method(const methodHandle& m, TRAPS);
1238
1239 static bool is_instance(oop resolved_method);
1240 };
1241
1242
1243 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1244 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1245
1246
1247 class java_lang_invoke_MemberName: AllStatic {
1248 friend class JavaClasses;
1249
1250 private:
1251 // From java.lang.invoke.MemberName:
1252 // private Class<?> clazz; // class in which the method is defined
1253 // private String name; // may be null if not yet materialized
1254 // private Object type; // may be null if not yet materialized
1255 // private int flags; // modifier bits; see reflect.Modifier
1256 // private ResolvedMethodName method; // holds VM-specific target value
1257 // private intptr_t vmindex; // member index within class or interface
1258 static int _clazz_offset;
1259 static int _name_offset;
1260 static int _type_offset;
1261 static int _flags_offset;
1262 static int _method_offset;
1263 static int _vmindex_offset;
1264
1265 static void compute_offsets();
1266
1267 public:
1268 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1269 // Accessors
1270 static oop clazz(oop mname);
1271 static void set_clazz(oop mname, oop clazz);
1272
1273 static oop type(oop mname);
1274 static void set_type(oop mname, oop type);
1275
1276 static oop name(oop mname);
1277 static void set_name(oop mname, oop name);
1278
1279 static int flags(oop mname);
1280 static void set_flags(oop mname, int flags);
1281
1282 // Link through ResolvedMethodName field to get Method*
1283 static Method* vmtarget(oop mname);
1284 static void set_method(oop mname, oop method);
1285
1286 static intptr_t vmindex(oop mname);
1287 static void set_vmindex(oop mname, intptr_t index);
1288
1289 // Testers
1290 static bool is_subclass(Klass* klass) {
1291 return klass->is_subclass_of(vmClasses::MemberName_klass());
1292 }
1293 static bool is_instance(oop obj);
1294
1295 static bool is_method(oop obj);
1296
1297 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1298 enum {
1299 MN_IS_METHOD = 0x00010000, // method (not constructor)
1300 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1301 MN_IS_FIELD = 0x00040000, // field
1302 MN_IS_TYPE = 0x00080000, // nested type
1303 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1304 MN_TRUSTED_FINAL = 0x00200000, // trusted final field
1305 MN_HIDDEN_MEMBER = 0x00400000, // @Hidden annotation detected
1306 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1307 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1308 MN_NESTMATE_CLASS = 0x00000001,
1309 MN_HIDDEN_CLASS = 0x00000002,
1310 MN_STRONG_LOADER_LINK = 0x00000004,
1311 MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1312 // Lookup modes
1313 MN_MODULE_MODE = 0x00000010,
1314 MN_UNCONDITIONAL_MODE = 0x00000020,
1315 MN_TRUSTED_MODE = -1
1316 };
1317
1318 // Accessors for code generation:
1319 static int clazz_offset() { CHECK_INIT(_clazz_offset); }
1320 static int type_offset() { CHECK_INIT(_type_offset); }
1321 static int flags_offset() { CHECK_INIT(_flags_offset); }
1322 static int method_offset() { CHECK_INIT(_method_offset); }
1323 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1324 };
1325
1326
1327 // Interface to java.lang.invoke.MethodType objects
1328
1329 class java_lang_invoke_MethodType: AllStatic {
1330 friend class JavaClasses;
1331
1332 private:
1333 static int _rtype_offset;
1334 static int _ptypes_offset;
1335
1336 static void compute_offsets();
1337
1338 public:
1339 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1340 // Accessors
1341 static oop rtype(oop mt);
1342 static objArrayOop ptypes(oop mt);
1343
1344 static oop ptype(oop mt, int index);
1345 static int ptype_count(oop mt);
1346
1347 static int ptype_slot_count(oop mt); // extra counts for long/double
1348 static int rtype_slot_count(oop mt); // extra counts for long/double
1349
1350 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1351 static void print_signature(oop mt, outputStream* st);
1352
1353 static bool is_instance(oop obj);
1354
1355 static bool equals(oop mt1, oop mt2);
1356
1357 // Accessors for code generation:
1358 static int rtype_offset() { CHECK_INIT(_rtype_offset); }
1359 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); }
1360 };
1361
1362
1363 // Interface to java.lang.invoke.CallSite objects
1364
1365 class java_lang_invoke_CallSite: AllStatic {
1366 friend class JavaClasses;
1367
1368 private:
1369 static int _target_offset;
1370 static int _context_offset;
1371
1372 static void compute_offsets();
1373
1374 public:
1375 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1376 // Accessors
1377 static oop target( oop site);
1378 static void set_target( oop site, oop target);
1379 static void set_target_volatile( oop site, oop target);
1380
1381 static oop context_no_keepalive(oop site);
1382
1383 // Testers
1384 static bool is_subclass(Klass* klass) {
1385 return klass->is_subclass_of(vmClasses::CallSite_klass());
1386 }
1387 static bool is_instance(oop obj);
1388
1389 // Accessors for code generation:
1390 static int target_offset() { CHECK_INIT(_target_offset); }
1391 static int context_offset() { CHECK_INIT(_context_offset); }
1392 };
1393
1394 // Interface to java.lang.invoke.ConstantCallSite objects
1395
1396 class java_lang_invoke_ConstantCallSite: AllStatic {
1397 friend class JavaClasses;
1398
1399 private:
1400 static int _is_frozen_offset;
1401
1402 static void compute_offsets();
1403
1404 public:
1405 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1406 // Accessors
1407 static jboolean is_frozen(oop site);
1408
1409 // Testers
1410 static bool is_subclass(Klass* klass) {
1411 return klass->is_subclass_of(vmClasses::ConstantCallSite_klass());
1412 }
1413 static bool is_instance(oop obj);
1414 };
1415
1416 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1417
1418 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1419 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1420 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1421
1422 class DependencyContext;
1423
1424 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1425 friend class JavaClasses;
1426
1427 private:
1428 static int _vmdependencies_offset;
1429 static int _last_cleanup_offset;
1430
1431 static void compute_offsets();
1432
1433 public:
1434 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1435 // Accessors
1436 static DependencyContext vmdependencies(oop context);
1437
1438 // Testers
1439 static bool is_subclass(Klass* klass) {
1440 return klass->is_subclass_of(vmClasses::Context_klass());
1441 }
1442 static bool is_instance(oop obj);
1443 };
1444
1445 // Interface to java.security.AccessControlContext objects
1446
1447 class java_security_AccessControlContext: AllStatic {
1448 private:
1449 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1450 // so we compute the offsets at startup rather than hard-wiring them.
1451 static int _context_offset;
1452 static int _privilegedContext_offset;
1453 static int _isPrivileged_offset;
1454 static int _isAuthorized_offset;
1455
1456 static void compute_offsets();
1457 public:
1458 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1459 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1460
1461 // Debugging/initialization
1462 friend class JavaClasses;
1463 };
1464
1465
1466 // Interface to java.lang.ClassLoader objects
1467
1468 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1469 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1470
1471 class java_lang_ClassLoader : AllStatic {
1472 private:
1473 static int _loader_data_offset;
1474 static int _parent_offset;
1475 static int _parallelCapable_offset;
1476 static int _name_offset;
1477 static int _nameAndId_offset;
1478 static int _unnamedModule_offset;
1479
1480 static void compute_offsets();
1481
1482 public:
1483 // Support for CDS
1484 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1485 static int loader_data_offset() { return _loader_data_offset; }
1486
1487 static ClassLoaderData* loader_data_acquire(oop loader);
1488 static ClassLoaderData* loader_data(oop loader);
1489 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1490
1491 static oop parent(oop loader);
1492 static oop parent_no_keepalive(oop loader);
1493 static oop name(oop loader);
1494 static oop nameAndId(oop loader);
1495 static bool isAncestor(oop loader, oop cl);
1496
1497 // Support for parallelCapable field
1498 static bool parallelCapable(oop the_class_mirror);
1499
1500 static bool is_trusted_loader(oop loader);
1501
1502 // Return true if this is one of the class loaders associated with
1503 // the generated bytecodes for serialization constructor returned
1504 // by sun.reflect.ReflectionFactory::newConstructorForSerialization
1505 static bool is_reflection_class_loader(oop loader);
1506
1507 // Fix for 4474172
1508 static oop non_reflection_class_loader(oop loader);
1509
1510 // Testers
1511 static bool is_subclass(Klass* klass) {
1512 return klass->is_subclass_of(vmClasses::ClassLoader_klass());
1513 }
1514 static bool is_instance(oop obj);
1515
1516 static oop unnamedModule(oop loader);
1517
1518 // Debugging
1519 friend class JavaClasses;
1520 };
1521
1522
1523 // Interface to java.lang.System objects
1524
1525 class java_lang_System : AllStatic {
1526 private:
1527 static int _static_in_offset;
1528 static int _static_out_offset;
1529 static int _static_err_offset;
1530 static int _static_security_offset;
1531 static int _static_allow_security_offset;
1532 static int _static_never_offset;
1533
1534 public:
1535 static int in_offset() { CHECK_INIT(_static_in_offset); }
1536 static int out_offset() { CHECK_INIT(_static_out_offset); }
1537 static int err_offset() { CHECK_INIT(_static_err_offset); }
1538 static bool allow_security_manager();
1539 static bool has_security_manager();
1540
1541 static void compute_offsets();
1542 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1543
1544 // Debugging
1545 friend class JavaClasses;
1546 };
1547
1548
1549 // Interface to java.lang.StackTraceElement objects
1550
1551 class java_lang_StackTraceElement: AllStatic {
1552 private:
1553 static int _declaringClassObject_offset;
1554 static int _classLoaderName_offset;
1555 static int _moduleName_offset;
1556 static int _moduleVersion_offset;
1557 static int _declaringClass_offset;
1558 static int _methodName_offset;
1559 static int _fileName_offset;
1560 static int _lineNumber_offset;
1561
1562 // Setters
1563 static void set_classLoaderName(oop element, oop value);
1564 static void set_moduleName(oop element, oop value);
1565 static void set_moduleVersion(oop element, oop value);
1566 static void set_declaringClass(oop element, oop value);
1567 static void set_methodName(oop element, oop value);
1568 static void set_fileName(oop element, oop value);
1569 static void set_lineNumber(oop element, int value);
1570 static void set_declaringClassObject(oop element, oop value);
1571
1572 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1573 const methodHandle& method, int bci,
1574 Symbol*& source, oop& source_file, int& line_number, TRAPS);
1575
1576 public:
1577 // Create an instance of StackTraceElement
1578 static oop create(const methodHandle& method, int bci, TRAPS);
1579
1580 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1581 int version, int bci, Symbol* name, TRAPS);
1582
1583 static void compute_offsets();
1584 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1585
1586 #if INCLUDE_JVMCI
1587 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1588 #endif
1589
1590 // Debugging
1591 friend class JavaClasses;
1592 };
1593
1594
1595 class Backtrace: AllStatic {
1596 public:
1597 // Helper backtrace functions to store bci|version together.
1598 static int merge_bci_and_version(int bci, int version);
1599 static int merge_mid_and_cpref(int mid, int cpref);
1600 static int bci_at(unsigned int merged);
1601 static int version_at(unsigned int merged);
1602 static int mid_at(unsigned int merged);
1603 static int cpref_at(unsigned int merged);
1604 static int get_line_number(Method* method, int bci);
1605 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1606
1607 // Debugging
1608 friend class JavaClasses;
1609 };
1610
1611 class java_lang_ClassFrameInfo: AllStatic {
1612 private:
1613 static int _classOrMemberName_offset;
1614 static int _flags_offset;
1615
1616 public:
1617 static oop classOrMemberName(oop info);
1618 static int flags(oop info);
1619
1620 // Setters
1621 static void init_class(Handle stackFrame, const methodHandle& m);
1622 static void init_method(Handle stackFrame, const methodHandle& m, TRAPS);
1623
1624 static void compute_offsets();
1625 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1626
1627 // Debugging
1628 friend class JavaClasses;
1629 };
1630
1631 // Interface to java.lang.StackFrameInfo objects
1632
1633 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1634 macro(java_lang_StackFrameInfo, version, short_signature, false)
1635
1636 class java_lang_StackFrameInfo: AllStatic {
1637 private:
1638 static int _type_offset;
1639 static int _name_offset;
1640 static int _bci_offset;
1641 static int _version_offset;
1642 static int _contScope_offset;
1643
1644 public:
1645 // Getters
1646 static oop name(oop info);
1647 static oop type(oop info);
1648 static Method* get_method(oop info);
1649
1650 // Setters
1651 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS);
1652 static void set_name(oop info, oop value);
1653 static void set_type(oop info, oop value);
1654 static void set_bci(oop info, int value);
1655
1656 static void set_version(oop info, short value);
1657 static void set_contScope(oop info, oop value);
1658
1659 static void compute_offsets();
1660 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1661
1662 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1663
1664 // Debugging
1665 friend class JavaClasses;
1666 };
1667
1668 class java_lang_LiveStackFrameInfo: AllStatic {
1669 private:
1670 static int _monitors_offset;
1671 static int _locals_offset;
1672 static int _operands_offset;
1673 static int _mode_offset;
1674
1675 public:
1676 static void set_monitors(oop info, oop value);
1677 static void set_locals(oop info, oop value);
1678 static void set_operands(oop info, oop value);
1679 static void set_mode(oop info, int value);
1680
1681 static void compute_offsets();
1682 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1683
1684 // Debugging
1685 friend class JavaClasses;
1686 };
1687
1688 // Interface to java.lang.reflect.RecordComponent objects
1689
1690 class java_lang_reflect_RecordComponent: AllStatic {
1691 private:
1692 static int _clazz_offset;
1693 static int _name_offset;
1694 static int _type_offset;
1695 static int _accessor_offset;
1696 static int _signature_offset;
1697 static int _annotations_offset;
1698 static int _typeAnnotations_offset;
1699
1700 // Setters
1701 static void set_clazz(oop element, oop value);
1702 static void set_name(oop element, oop value);
1703 static void set_type(oop element, oop value);
1704 static void set_accessor(oop element, oop value);
1705 static void set_signature(oop element, oop value);
1706 static void set_annotations(oop element, oop value);
1707 static void set_typeAnnotations(oop element, oop value);
1708
1709 public:
1710 // Create an instance of RecordComponent
1711 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1712
1713 static void compute_offsets();
1714 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1715
1716 // Debugging
1717 friend class JavaClasses;
1718 };
1719
1720
1721 // Interface to java.lang.AssertionStatusDirectives objects
1722
1723 class java_lang_AssertionStatusDirectives: AllStatic {
1724 private:
1725 static int _classes_offset;
1726 static int _classEnabled_offset;
1727 static int _packages_offset;
1728 static int _packageEnabled_offset;
1729 static int _deflt_offset;
1730
1731 public:
1732 // Setters
1733 static void set_classes(oop obj, oop val);
1734 static void set_classEnabled(oop obj, oop val);
1735 static void set_packages(oop obj, oop val);
1736 static void set_packageEnabled(oop obj, oop val);
1737 static void set_deflt(oop obj, bool val);
1738
1739 static void compute_offsets();
1740 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1741
1742 // Debugging
1743 friend class JavaClasses;
1744 };
1745
1746
1747 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1748 private:
1749 static int _owner_offset;
1750 public:
1751 static void compute_offsets();
1752 static oop get_owner_threadObj(oop obj);
1753 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1754 };
1755
1756 // Interface to jdk.internal.misc.UnsafeConsants
1757
1758 class jdk_internal_misc_UnsafeConstants : AllStatic {
1759 public:
1760 static void set_unsafe_constants();
1761 static void compute_offsets() { }
1762 static void serialize_offsets(SerializeClosure* f) { }
1763 };
1764
1765 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects
1766
1767 class vector_VectorPayload : AllStatic {
1768 private:
1769 static int _payload_offset;
1770 public:
1771 static void set_payload(oop o, oop val);
1772
1773 static void compute_offsets();
1774 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1775
1776 // Testers
1777 static bool is_subclass(Klass* klass) {
1778 return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass());
1779 }
1780 static bool is_instance(oop obj);
1781 };
1782
1783 class java_lang_Integer : AllStatic {
1784 public:
1785 static jint value(oop obj);
1786 };
1787
1788 class java_lang_Long : AllStatic {
1789 public:
1790 static jlong value(oop obj);
1791 };
1792
1793 class java_lang_Character : AllStatic {
1794 public:
1795 static jchar value(oop obj);
1796 };
1797
1798 class java_lang_Short : AllStatic {
1799 public:
1800 static jshort value(oop obj);
1801 };
1802
1803 class java_lang_Byte : AllStatic {
1804 public:
1805 static jbyte value(oop obj);
1806 };
1807
1808 class java_lang_Boolean : AllStatic {
1809 private:
1810 static int _static_TRUE_offset;
1811 static int _static_FALSE_offset;
1812 public:
1813 static Symbol* symbol();
1814 static void compute_offsets(InstanceKlass* k);
1815 static oop get_TRUE(InstanceKlass *k);
1816 static oop get_FALSE(InstanceKlass *k);
1817 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1818 static jboolean value(oop obj);
1819 };
1820
1821 class java_lang_Integer_IntegerCache : AllStatic {
1822 private:
1823 static int _static_cache_offset;
1824 public:
1825 static Symbol* symbol();
1826 static void compute_offsets(InstanceKlass* k);
1827 static objArrayOop cache(InstanceKlass *k);
1828 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1829 };
1830
1831 class java_lang_Long_LongCache : AllStatic {
1832 private:
1833 static int _static_cache_offset;
1834 public:
1835 static Symbol* symbol();
1836 static void compute_offsets(InstanceKlass* k);
1837 static objArrayOop cache(InstanceKlass *k);
1838 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1839 };
1840
1841 class java_lang_Character_CharacterCache : AllStatic {
1842 private:
1843 static int _static_cache_offset;
1844 public:
1845 static Symbol* symbol();
1846 static void compute_offsets(InstanceKlass* k);
1847 static objArrayOop cache(InstanceKlass *k);
1848 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1849 };
1850
1851 class java_lang_Short_ShortCache : AllStatic {
1852 private:
1853 static int _static_cache_offset;
1854 public:
1855 static Symbol* symbol();
1856 static void compute_offsets(InstanceKlass* k);
1857 static objArrayOop cache(InstanceKlass *k);
1858 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1859 };
1860
1861 class java_lang_Byte_ByteCache : AllStatic {
1862 private:
1863 static int _static_cache_offset;
1864 public:
1865 static Symbol* symbol();
1866 static void compute_offsets(InstanceKlass* k);
1867 static objArrayOop cache(InstanceKlass *k);
1868 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1869 };
1870
1871
1872 // Interface to java.lang.InternalError objects
1873
1874 #define INTERNALERROR_INJECTED_FIELDS(macro) \
1875 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1876
1877 class java_lang_InternalError : AllStatic {
1878 private:
1879 static int _during_unsafe_access_offset;
1880 public:
1881 static jboolean during_unsafe_access(oop internal_error);
1882 static void set_during_unsafe_access(oop internal_error);
1883 static void compute_offsets();
1884 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1885 };
1886
1887 // Use to declare fields that need to be injected into Java classes
1888 // for the JVM to use. The name_index and signature_index are
1889 // declared in vmSymbols. The may_be_java flag is used to declare
1890 // fields that might already exist in Java but should be injected if
1891 // they don't. Otherwise the field is unconditionally injected and
1892 // the JVM uses the injected one. This is to ensure that name
1893 // collisions don't occur. In general may_be_java should be false
1894 // unless there's a good reason.
1895
1896 class InjectedField {
1897 public:
1898 const vmClassID klass_id;
1899 const vmSymbolID name_index;
1900 const vmSymbolID signature_index;
1901 const bool may_be_java;
1902
1903
1904 Klass* klass() const { return vmClasses::klass_at(klass_id); }
1905 Symbol* name() const { return lookup_symbol(name_index); }
1906 Symbol* signature() const { return lookup_symbol(signature_index); }
1907
1908 int compute_offset();
1909
1910 // Find the Symbol for this index
1911 static Symbol* lookup_symbol(vmSymbolID symbol_index) {
1912 return Symbol::vm_symbol_at(symbol_index);
1913 }
1914 };
1915
1916
1917 // Interface to hard-coded offset checking
1918
1919 enum class InjectedFieldID : int;
1920
1921 class JavaClasses : AllStatic {
1922 private:
1923
1924 static InjectedField _injected_fields[];
1925
1926 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1927 public:
1928
1929 static int compute_injected_offset(InjectedFieldID id);
1930
1931 static void compute_offsets();
1932 static void check_offsets() PRODUCT_RETURN;
1933 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1934 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1935 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1936
1937 static void compute_offset(int &dest_offset,
1938 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
1939 bool is_static = false);
1940 static void compute_offset(int& dest_offset, InstanceKlass* ik,
1941 const char* name_string, Symbol* signature_symbol,
1942 bool is_static = false);
1943 };
1944
1945 #undef CHECK_INIT
1946
1947 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP