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 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 static int _reflectionData_offset;
239
240 static bool _offsets_computed;
241
242 static GrowableArray<Klass*>* _fixup_mirror_list;
243 static GrowableArray<Klass*>* _fixup_module_field_list;
244
245 static void set_init_lock(oop java_class, oop init_lock);
246 static void set_protection_domain(oop java_class, oop protection_domain);
247 static void set_class_loader(oop java_class, oop class_loader);
248 static void set_component_mirror(oop java_class, oop comp_mirror);
249 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
250 Handle classData, TRAPS);
251 static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
252 public:
253 static void allocate_fixup_lists();
254 static void compute_offsets();
255
256 // Instance creation
257 static void allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
258 Handle& mirror, Handle& comp_mirror, TRAPS); // returns mirror and comp_mirror
259 static void create_mirror(Klass* k, Handle class_loader, Handle module,
260 Handle protection_domain, Handle classData, TRAPS);
261 static void fixup_mirror(Klass* k, TRAPS);
262 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
263
264 // Archiving
265 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
266 static void create_scratch_mirror(Klass* k, Handle protection_domain, TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
267 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
268 Handle protection_domain,
269 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
270
271 static void fixup_module_field(Klass* k, Handle module);
272
273 // Conversion
274 static Klass* as_Klass(oop java_class);
275 static void set_klass(oop java_class, Klass* klass);
276 static BasicType as_BasicType(oop java_class, Klass** reference_klass = nullptr);
277 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
278 static void print_signature(oop java_class, outputStream *st);
279 static const char* as_external_name(oop java_class);
280 // Testing
281 static bool is_instance(oop obj);
282
283 static bool is_primitive(oop java_class);
284 static BasicType primitive_type(oop java_class);
285 static oop primitive_mirror(BasicType t);
286 // JVM_NewArray support
287 static Klass* array_klass_acquire(oop java_class);
288 static void release_set_array_klass(oop java_class, Klass* klass);
289 // compiler support for class operations
290 static int klass_offset() { CHECK_INIT(_klass_offset); }
291 static int array_klass_offset() { CHECK_INIT(_array_klass_offset); }
292 // Support for classRedefinedCount field
293 static int classRedefinedCount(oop the_class_mirror);
294 static void set_classRedefinedCount(oop the_class_mirror, int value);
295
296 // Support for embedded per-class oops
297 static oop protection_domain(oop java_class);
298 static oop init_lock(oop java_class);
299 static void clear_init_lock(oop java_class) {
300 set_init_lock(java_class, nullptr);
301 }
302 static oop component_mirror(oop java_class);
303 static objArrayOop signers(oop java_class);
304 static void set_signers(oop java_class, objArrayOop signers);
305 static oop class_data(oop java_class);
306 static void set_class_data(oop java_class, oop classData);
307
308 static oop reflection_data(oop java_class);
309 static void set_reflection_data(oop java_class, oop reflection_data);
310 static bool has_reflection_data(oop java_class);
311
312 static int component_mirror_offset() { return _component_mirror_offset; }
313
314 static oop class_loader(oop java_class);
315 static void set_module(oop java_class, oop module);
316 static oop module(oop java_class);
317
318 static oop name(Handle java_class, TRAPS);
319
320 static oop source_file(oop java_class);
321 static void set_source_file(oop java_class, oop source_file);
322
323 static size_t oop_size(oop java_class);
324 static void set_oop_size(HeapWord* java_class, size_t size);
325 static int static_oop_field_count(oop java_class);
326 static void set_static_oop_field_count(oop java_class, int size);
327
328 static GrowableArray<Klass*>* fixup_mirror_list() {
329 return _fixup_mirror_list;
330 }
331 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
332 _fixup_mirror_list = v;
333 }
334
335 static GrowableArray<Klass*>* fixup_module_field_list() {
336 return _fixup_module_field_list;
337 }
338 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
339 _fixup_module_field_list = v;
340 }
341
342 // Debugging
343 friend class JavaClasses;
344 };
345
346 // Interface to java.lang.Thread objects
347
348 #define THREAD_INJECTED_FIELDS(macro) \
349 macro(java_lang_Thread, jvmti_thread_state, intptr_signature, false) \
350 macro(java_lang_Thread, jvmti_VTMS_transition_disable_count, int_signature, false) \
351 macro(java_lang_Thread, jvmti_is_in_VTMS_transition, bool_signature, false) \
352 JFR_ONLY(macro(java_lang_Thread, jfr_epoch, short_signature, false))
353
354 class java_lang_Thread : AllStatic {
355 friend class java_lang_VirtualThread;
356 friend class JVMCIVMStructs;
357 private:
358 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
359 // so we compute the offsets at startup rather than hard-wiring them.
360 static int _holder_offset;
361 static int _name_offset;
362 static int _contextClassLoader_offset;
363 static int _inheritedAccessControlContext_offset;
364 static int _eetop_offset;
365 static int _jvmti_thread_state_offset;
366 static int _jvmti_VTMS_transition_disable_count_offset;
367 static int _jvmti_is_in_VTMS_transition_offset;
368 static int _interrupted_offset;
369 static int _interruptLock_offset;
370 static int _tid_offset;
371 static int _continuation_offset;
372 static int _park_blocker_offset;
373 static int _scopedValueBindings_offset;
374 JFR_ONLY(static int _jfr_epoch_offset;)
375
376 static void compute_offsets();
377
378 public:
379 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
380
381 // Returns the JavaThread associated with the thread obj
382 static JavaThread* thread(oop java_thread);
383 static JavaThread* thread_acquire(oop java_thread);
384 // Set JavaThread for instance
385 static void set_thread(oop java_thread, JavaThread* thread);
386 static void release_set_thread(oop java_thread, JavaThread* thread);
387 // FieldHolder
388 static oop holder(oop java_thread);
389 // interruptLock
390 static oop interrupt_lock(oop java_thread);
391 // Interrupted status
392 static bool interrupted(oop java_thread);
393 static void set_interrupted(oop java_thread, bool val);
394 // Name
395 static oop name(oop java_thread);
396 static void set_name(oop java_thread, oop name);
397 // Priority
398 static ThreadPriority priority(oop java_thread);
399 static void set_priority(oop java_thread, ThreadPriority priority);
400 // Thread group
401 static oop threadGroup(oop java_thread);
402 // Alive (NOTE: this is not really a field, but provides the correct
403 // definition without doing a Java call)
404 static bool is_alive(oop java_thread);
405 // Daemon
406 static bool is_daemon(oop java_thread);
407 static void set_daemon(oop java_thread);
408 // Context ClassLoader
409 static oop context_class_loader(oop java_thread);
410 // Control context
411 static oop inherited_access_control_context(oop java_thread);
412 // Stack size hint
413 static jlong stackSize(oop java_thread);
414 // Thread ID
415 static int64_t thread_id(oop java_thread);
416 static ByteSize thread_id_offset();
417 // Continuation
418 static inline oop continuation(oop java_thread);
419
420 static JvmtiThreadState* jvmti_thread_state(oop java_thread);
421 static void set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state);
422 static int VTMS_transition_disable_count(oop java_thread);
423 static void inc_VTMS_transition_disable_count(oop java_thread);
424 static void dec_VTMS_transition_disable_count(oop java_thread);
425 static bool is_in_VTMS_transition(oop java_thread);
426 static void set_is_in_VTMS_transition(oop java_thread, bool val);
427 static int is_in_VTMS_transition_offset();
428
429 // Clear all scoped value bindings on error
430 static void clear_scopedValueBindings(oop java_thread);
431
432 // Blocker object responsible for thread parking
433 static oop park_blocker(oop java_thread);
434
435 // Write thread status info to threadStatus field of java.lang.Thread.
436 static void set_thread_status(oop java_thread_oop, JavaThreadStatus status);
437 // Read thread status info from threadStatus field of java.lang.Thread.
438 static JavaThreadStatus get_thread_status(oop java_thread_oop);
439
440 static const char* thread_status_name(oop java_thread_oop);
441
442 // Fill in current stack trace, can cause GC
443 static oop async_get_stack_trace(oop java_thread, TRAPS);
444
445 JFR_ONLY(static u2 jfr_epoch(oop java_thread);)
446 JFR_ONLY(static void set_jfr_epoch(oop java_thread, u2 epoch);)
447 JFR_ONLY(static int jfr_epoch_offset() { CHECK_INIT(_jfr_epoch_offset); })
448
449 // Debugging
450 friend class JavaClasses;
451 };
452
453 // Interface to java.lang.Thread$FieldHolder objects
454
455 class java_lang_Thread_FieldHolder : AllStatic {
456 private:
457 static int _group_offset;
458 static int _priority_offset;
459 static int _stackSize_offset;
460 static int _daemon_offset;
461 static int _thread_status_offset;
462
463 static void compute_offsets();
464
465 public:
466 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
467
468 static oop threadGroup(oop holder);
469
470 static ThreadPriority priority(oop holder);
471 static void set_priority(oop holder, ThreadPriority priority);
472
473 static jlong stackSize(oop holder);
474
475 static bool is_daemon(oop holder);
476 static void set_daemon(oop holder, bool val);
477
478 static void set_thread_status(oop holder, JavaThreadStatus status);
479 static JavaThreadStatus get_thread_status(oop holder);
480
481 friend class JavaClasses;
482 };
483
484 // Interface to java.lang.Thread$Constants objects
485
486 class java_lang_Thread_Constants : AllStatic {
487 private:
488 static int _static_VTHREAD_GROUP_offset;
489 static int _static_NOT_SUPPORTED_CLASSLOADER_offset;
490
491 static void compute_offsets();
492 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
493
494 public:
495 static oop get_VTHREAD_GROUP();
496
497 friend class JavaClasses;
498 };
499
500 // Interface to java.lang.ThreadGroup objects
501
502 class java_lang_ThreadGroup : AllStatic {
503 private:
504 static int _parent_offset;
505 static int _name_offset;
506 static int _maxPriority_offset;
507 static int _daemon_offset;
508
509 static void compute_offsets();
510 public:
511 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
512
513 // parent ThreadGroup
514 static oop parent(oop java_thread_group);
515 // name
516 static const char* name(oop java_thread_group);
517 // maxPriority in group
518 static ThreadPriority maxPriority(oop java_thread_group);
519 // Daemon
520 static bool is_daemon(oop java_thread_group);
521
522 // Debugging
523 friend class JavaClasses;
524 };
525
526
527 // Interface to java.lang.VirtualThread objects
528
529 class java_lang_VirtualThread : AllStatic {
530 private:
531 static int static_vthread_scope_offset;
532 static int _carrierThread_offset;
533 static int _continuation_offset;
534 static int _state_offset;
535 JFR_ONLY(static int _jfr_epoch_offset;)
536 public:
537 enum {
538 NEW = 0,
539 STARTED = 1,
540 RUNNING = 2,
541 PARKING = 3,
542 PARKED = 4,
543 PINNED = 5,
544 TIMED_PARKING = 6,
545 TIMED_PARKED = 7,
546 TIMED_PINNED = 8,
547 UNPARKED = 9,
548 YIELDING = 10,
549 YIELDED = 11,
550 TERMINATED = 99,
551
552 // additional state bits
553 SUSPENDED = 1 << 8, // suspended when unmounted
554 };
555
556 static void compute_offsets();
557 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
558
559 // Testers
560 static bool is_subclass(Klass* klass) {
561 return klass->is_subclass_of(vmClasses::VirtualThread_klass());
562 }
563 static bool is_instance(oop obj);
564
565 static oop vthread_scope();
566 static oop carrier_thread(oop vthread);
567 static oop continuation(oop vthread);
568 static int state(oop vthread);
569 static JavaThreadStatus map_state_to_thread_status(int state);
570 };
571
572
573 // Interface to java.lang.Throwable objects
574
575 class java_lang_Throwable: AllStatic {
576 friend class BacktraceBuilder;
577 friend class BacktraceIterator;
578
579 private:
580 // Trace constants
581 enum {
582 trace_methods_offset = 0,
583 trace_bcis_offset = 1,
584 trace_mirrors_offset = 2,
585 trace_names_offset = 3,
586 trace_conts_offset = 4,
587 trace_next_offset = 5,
588 trace_hidden_offset = 6,
589 trace_size = 7,
590 trace_chunk_size = 32
591 };
592
593 static int _backtrace_offset;
594 static int _detailMessage_offset;
595 static int _stackTrace_offset;
596 static int _depth_offset;
597 static int _cause_offset;
598 static int _static_unassigned_stacktrace_offset;
599
600 // StackTrace (programmatic access, new since 1.4)
601 static void clear_stacktrace(oop throwable);
602 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
603 static void set_stacktrace(oop throwable, oop st_element_array);
604 static oop unassigned_stacktrace();
605
606 public:
607 // Backtrace
608 static oop backtrace(oop throwable);
609 static void set_backtrace(oop throwable, oop value);
610 static int depth(oop throwable);
611 static void set_depth(oop throwable, int value);
612 // Message
613 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
614 static oop message(oop throwable);
615 static const char* message_as_utf8(oop throwable);
616 static void set_message(oop throwable, oop value);
617
618 static oop cause(oop throwable);
619
620 static void print_stack_element(outputStream *st, Method* method, int bci);
621
622 static void compute_offsets();
623 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
624
625 // Allocate space for backtrace (created but stack trace not filled in)
626 static void allocate_backtrace(Handle throwable, TRAPS);
627 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
628 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
629 // Fill in current stack trace, can cause GC
630 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
631 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
632
633 // Programmatic access to stack trace
634 static void get_stack_trace_elements(int depth, Handle backtrace, objArrayHandle stack_trace, TRAPS);
635
636 // For recreating class initialization error exceptions.
637 static Handle create_initialization_error(JavaThread* current, Handle throwable);
638
639 static oop create_exception_instance(Symbol* class_name, TRAPS);
640
641 // Printing
642 static void print(oop throwable, outputStream* st);
643 static void print_stack_trace(Handle throwable, outputStream* st);
644 static void java_printStackTrace(Handle throwable, TRAPS);
645 // Debugging
646 friend class JavaClasses;
647 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
648 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
649 };
650
651
652 // Interface to java.lang.reflect.AccessibleObject objects
653
654 class java_lang_reflect_AccessibleObject: AllStatic {
655 private:
656 // Note that to reduce dependencies on the JDK we compute these
657 // offsets at run-time.
658 static int _override_offset;
659
660 static void compute_offsets();
661
662 public:
663 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
664
665 // Accessors
666 static jboolean override(oop reflect);
667 static void set_override(oop reflect, jboolean value);
668
669 // Debugging
670 friend class JavaClasses;
671 };
672
673
674 // Interface to java.lang.reflect.Method objects
675
676 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
677 private:
678 // Note that to reduce dependencies on the JDK we compute these
679 // offsets at run-time.
680 static int _clazz_offset;
681 static int _name_offset;
682 static int _returnType_offset;
683 static int _parameterTypes_offset;
684 static int _exceptionTypes_offset;
685 static int _slot_offset;
686 static int _modifiers_offset;
687 static int _signature_offset;
688 static int _annotations_offset;
689 static int _parameter_annotations_offset;
690 static int _annotation_default_offset;
691
692 static void compute_offsets();
693 public:
694 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
695
696 // Allocation
697 static Handle create(TRAPS);
698
699 // Accessors
700 static oop clazz(oop reflect);
701 static void set_clazz(oop reflect, oop value);
702
703 static void set_name(oop method, oop value);
704
705 static oop return_type(oop method);
706 static void set_return_type(oop method, oop value);
707
708 static oop parameter_types(oop method);
709 static void set_parameter_types(oop method, oop value);
710
711 static int slot(oop reflect);
712 static void set_slot(oop reflect, int value);
713
714 static void set_exception_types(oop method, oop value);
715 static void set_modifiers(oop method, int value);
716 static void set_signature(oop method, oop value);
717 static void set_annotations(oop method, oop value);
718 static void set_parameter_annotations(oop method, oop value);
719 static void set_annotation_default(oop method, oop value);
720
721 // Debugging
722 friend class JavaClasses;
723 };
724
725
726 // Interface to java.lang.reflect.Constructor objects
727
728 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
729 private:
730 // Note that to reduce dependencies on the JDK we compute these
731 // offsets at run-time.
732 static int _clazz_offset;
733 static int _parameterTypes_offset;
734 static int _exceptionTypes_offset;
735 static int _slot_offset;
736 static int _modifiers_offset;
737 static int _signature_offset;
738 static int _annotations_offset;
739 static int _parameter_annotations_offset;
740
741 static void compute_offsets();
742 public:
743 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
744
745 // Allocation
746 static Handle create(TRAPS);
747
748 // Accessors
749 static oop clazz(oop reflect);
750 static void set_clazz(oop reflect, oop value);
751
752 static oop parameter_types(oop constructor);
753 static void set_parameter_types(oop constructor, oop value);
754
755 static int slot(oop reflect);
756 static void set_slot(oop reflect, int value);
757
758 static void set_exception_types(oop constructor, oop value);
759 static void set_modifiers(oop constructor, int value);
760 static void set_signature(oop constructor, oop value);
761 static void set_annotations(oop constructor, oop value);
762 static void set_parameter_annotations(oop method, oop value);
763
764 // Debugging
765 friend class JavaClasses;
766 };
767
768
769 // Interface to java.lang.reflect.Field objects
770
771 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
772 private:
773 // Note that to reduce dependencies on the JDK we compute these
774 // offsets at run-time.
775 static int _clazz_offset;
776 static int _name_offset;
777 static int _type_offset;
778 static int _slot_offset;
779 static int _modifiers_offset;
780 static int _trusted_final_offset;
781 static int _signature_offset;
782 static int _annotations_offset;
783
784 static void compute_offsets();
785
786 public:
787 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
788
789 // Allocation
790 static Handle create(TRAPS);
791
792 // Accessors
793 static oop clazz(oop reflect);
794 static void set_clazz(oop reflect, oop value);
795
796 static oop name(oop field);
797 static void set_name(oop field, oop value);
798
799 static oop type(oop field);
800 static void set_type(oop field, oop value);
801
802 static int slot(oop reflect);
803 static void set_slot(oop reflect, int value);
804
805 static int modifiers(oop field);
806 static void set_modifiers(oop field, int value);
807
808 static void set_trusted_final(oop field);
809
810 static void set_signature(oop constructor, oop value);
811 static void set_annotations(oop constructor, oop value);
812
813 // Debugging
814 friend class JavaClasses;
815 };
816
817 class java_lang_reflect_Parameter {
818 private:
819 // Note that to reduce dependencies on the JDK we compute these
820 // offsets at run-time.
821 static int _name_offset;
822 static int _modifiers_offset;
823 static int _index_offset;
824 static int _executable_offset;
825
826 static void compute_offsets();
827
828 public:
829 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
830
831 // Allocation
832 static Handle create(TRAPS);
833
834 // Accessors
835 static oop name(oop field);
836 static void set_name(oop field, oop value);
837
838 static int index(oop reflect);
839 static void set_index(oop reflect, int value);
840
841 static int modifiers(oop reflect);
842 static void set_modifiers(oop reflect, int value);
843
844 static oop executable(oop constructor);
845 static void set_executable(oop constructor, oop value);
846
847 friend class JavaClasses;
848 };
849
850 #define MODULE_INJECTED_FIELDS(macro) \
851 macro(java_lang_Module, module_entry, intptr_signature, false)
852
853 class java_lang_Module {
854 private:
855 static int _loader_offset;
856 static int _name_offset;
857 static int _module_entry_offset;
858
859 static void compute_offsets();
860
861 public:
862 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
863
864 // Allocation
865 static Handle create(Handle loader, Handle module_name, TRAPS);
866
867 // Testers
868 static bool is_instance(oop obj);
869
870 // Accessors
871 static oop loader(oop module);
872 static void set_loader(oop module, oop value);
873
874 // CDS
875 static int module_entry_offset() { return _module_entry_offset; }
876
877 static oop name(oop module);
878 static void set_name(oop module, oop value);
879
880 static ModuleEntry* module_entry(oop module);
881 static ModuleEntry* module_entry_raw(oop module);
882 static void set_module_entry(oop module, ModuleEntry* module_entry);
883
884 friend class JavaClasses;
885 };
886
887 // Interface to jdk.internal.reflect.ConstantPool objects
888 class reflect_ConstantPool {
889 private:
890 // Note that to reduce dependencies on the JDK we compute these
891 // offsets at run-time.
892 static int _oop_offset;
893
894 static void compute_offsets();
895
896 public:
897 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
898
899 // Allocation
900 static Handle create(TRAPS);
901
902 // Accessors
903 static void set_cp(oop reflect, ConstantPool* value);
904 static int oop_offset() { CHECK_INIT(_oop_offset); }
905
906 static ConstantPool* get_cp(oop reflect);
907
908 // Debugging
909 friend class JavaClasses;
910 };
911
912
913 // Interface to java.lang primitive type boxing objects:
914 // - java.lang.Boolean
915 // - java.lang.Character
916 // - java.lang.Float
917 // - java.lang.Double
918 // - java.lang.Byte
919 // - java.lang.Short
920 // - java.lang.Integer
921 // - java.lang.Long
922
923 // This could be separated out into 8 individual classes.
924
925 class java_lang_boxing_object: AllStatic {
926 private:
927 static int _value_offset;
928 static int _long_value_offset;
929
930 static void compute_offsets();
931 static oop initialize_and_allocate(BasicType type, TRAPS);
932 public:
933 // Allocation. Returns a boxed value, or null for invalid type.
934 static oop create(BasicType type, jvalue* value, TRAPS);
935 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
936 static BasicType get_value(oop box, jvalue* value);
937 static BasicType set_value(oop box, jvalue* value);
938 static BasicType basic_type(oop box);
939 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
940 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
941 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
942 static void print(BasicType type, jvalue* value, outputStream* st);
943
944 static int value_offset(BasicType type) {
945 return is_double_word_type(type) ? _long_value_offset : _value_offset;
946 }
947
948 static void serialize_offsets(SerializeClosure* f);
949
950 // Debugging
951 friend class JavaClasses;
952 };
953
954
955
956 // Interface to java.lang.ref.Reference objects
957
958 class java_lang_ref_Reference: AllStatic {
959 static int _referent_offset;
960 static int _queue_offset;
961 static int _next_offset;
962 static int _discovered_offset;
963
964 static bool _offsets_initialized;
965
966 public:
967 // Accessors
968 static inline oop weak_referent_no_keepalive(oop ref);
969 static inline oop weak_referent(oop ref);
970 static inline oop phantom_referent_no_keepalive(oop ref);
971 static inline oop unknown_referent_no_keepalive(oop ref);
972 static inline void clear_referent(oop ref);
973 static inline void clear_referent_raw(oop ref);
974 static inline HeapWord* referent_addr_raw(oop ref);
975 static inline oop next(oop ref);
976 static inline void set_next(oop ref, oop value);
977 static inline void set_next_raw(oop ref, oop value);
978 static inline HeapWord* next_addr_raw(oop ref);
979 static inline oop discovered(oop ref);
980 static inline void set_discovered(oop ref, oop value);
981 static inline void set_discovered_raw(oop ref, oop value);
982 static inline HeapWord* discovered_addr_raw(oop ref);
983 static bool is_referent_field(oop obj, ptrdiff_t offset);
984 static inline bool is_final(oop ref);
985 static inline bool is_phantom(oop ref);
986 static inline bool is_weak(oop ref);
987 static inline bool is_soft(oop ref);
988
989 static int referent_offset() { CHECK_INIT(_referent_offset); }
990 static int queue_offset() { CHECK_INIT(_queue_offset); }
991 static int next_offset() { CHECK_INIT(_next_offset); }
992 static int discovered_offset() { CHECK_INIT(_discovered_offset); }
993
994 static void compute_offsets();
995 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
996 };
997
998
999 // Interface to java.lang.ref.SoftReference objects
1000
1001 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
1002 static int _timestamp_offset;
1003 static int _static_clock_offset;
1004
1005 public:
1006 // Accessors
1007 static jlong timestamp(oop ref);
1008
1009 // Accessors for statics
1010 static jlong clock();
1011 static void set_clock(jlong value);
1012
1013 static void compute_offsets();
1014 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1015 };
1016
1017 // Interface to java.lang.invoke.MethodHandle objects
1018
1019 class java_lang_invoke_MethodHandle: AllStatic {
1020 friend class JavaClasses;
1021
1022 private:
1023 static int _type_offset; // the MethodType of this MH
1024 static int _form_offset; // the LambdaForm of this MH
1025
1026 static void compute_offsets();
1027
1028 public:
1029 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1030
1031 // Accessors
1032 static oop type(oop mh);
1033 static void set_type(oop mh, oop mtype);
1034
1035 static oop form(oop mh);
1036 static void set_form(oop mh, oop lform);
1037
1038 // Testers
1039 static bool is_subclass(Klass* klass) {
1040 return klass->is_subclass_of(vmClasses::MethodHandle_klass());
1041 }
1042 static bool is_instance(oop obj);
1043
1044 // Accessors for code generation:
1045 static int type_offset() { CHECK_INIT(_type_offset); }
1046 static int form_offset() { CHECK_INIT(_form_offset); }
1047 };
1048
1049 // Interface to java.lang.invoke.DirectMethodHandle objects
1050
1051 class java_lang_invoke_DirectMethodHandle: AllStatic {
1052 friend class JavaClasses;
1053
1054 private:
1055 static int _member_offset; // the MemberName of this DMH
1056
1057 static void compute_offsets();
1058
1059 public:
1060 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1061
1062 // Accessors
1063 static oop member(oop mh);
1064
1065 // Testers
1066 static bool is_subclass(Klass* klass) {
1067 return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass());
1068 }
1069 static bool is_instance(oop obj);
1070
1071 // Accessors for code generation:
1072 static int member_offset() { CHECK_INIT(_member_offset); }
1073 };
1074
1075 // Interface to java.lang.invoke.LambdaForm objects
1076 // (These are a private interface for managing adapter code generation.)
1077
1078 class java_lang_invoke_LambdaForm: AllStatic {
1079 friend class JavaClasses;
1080
1081 private:
1082 static int _vmentry_offset; // type is MemberName
1083
1084 static void compute_offsets();
1085
1086 public:
1087 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1088
1089 // Accessors
1090 static oop vmentry(oop lform);
1091
1092 // Testers
1093 static bool is_subclass(Klass* klass) {
1094 return vmClasses::LambdaForm_klass() != nullptr &&
1095 klass->is_subclass_of(vmClasses::LambdaForm_klass());
1096 }
1097 static bool is_instance(oop obj);
1098
1099 // Accessors for code generation:
1100 static int vmentry_offset() { CHECK_INIT(_vmentry_offset); }
1101 };
1102
1103 // Interface to java.lang.invoke.NativeEntryPoint objects
1104 // (These are a private interface for managing adapter code generation.)
1105
1106 class jdk_internal_foreign_abi_NativeEntryPoint: AllStatic {
1107 friend class JavaClasses;
1108
1109 private:
1110 static int _method_type_offset;
1111 static int _downcall_stub_address_offset;
1112
1113 static void compute_offsets();
1114
1115 public:
1116 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1117
1118 // Accessors
1119 static oop method_type(oop entry);
1120 static jlong downcall_stub_address(oop entry);
1121
1122 // Testers
1123 static bool is_subclass(Klass* klass) {
1124 return vmClasses::NativeEntryPoint_klass() != nullptr &&
1125 klass->is_subclass_of(vmClasses::NativeEntryPoint_klass());
1126 }
1127 static bool is_instance(oop obj);
1128
1129 // Accessors for code generation:
1130 static int method_type_offset_in_bytes() { return _method_type_offset; }
1131 static int downcall_stub_address_offset_in_bytes() { return _downcall_stub_address_offset; }
1132 };
1133
1134 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic {
1135 friend class JavaClasses;
1136
1137 private:
1138 static int _inputStorage_offset;
1139 static int _outputStorage_offset;
1140 static int _volatileStorage_offset;
1141 static int _stackAlignment_offset;
1142 static int _shadowSpace_offset;
1143 static int _scratch1_offset;
1144 static int _scratch2_offset;
1145
1146 static void compute_offsets();
1147
1148 public:
1149 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1150
1151 // Accessors
1152 static objArrayOop inputStorage(oop entry);
1153 static objArrayOop outputStorage(oop entry);
1154 static objArrayOop volatileStorage(oop entry);
1155 static jint stackAlignment(oop entry);
1156 static jint shadowSpace(oop entry);
1157 static oop scratch1(oop entry);
1158 static oop scratch2(oop entry);
1159
1160 // Testers
1161 static bool is_subclass(Klass* klass) {
1162 return vmClasses::ABIDescriptor_klass() != nullptr &&
1163 klass->is_subclass_of(vmClasses::ABIDescriptor_klass());
1164 }
1165 static bool is_instance(oop obj);
1166 };
1167
1168 class jdk_internal_foreign_abi_VMStorage: AllStatic {
1169 friend class JavaClasses;
1170
1171 private:
1172 static int _type_offset;
1173 static int _indexOrOffset_offset;
1174 static int _segmentMaskOrSize_offset;
1175 static int _debugName_offset;
1176
1177 static void compute_offsets();
1178
1179 public:
1180 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1181
1182 // Accessors
1183 static jbyte type(oop entry);
1184 static jint index_or_offset(oop entry);
1185 static jshort segment_mask_or_size(oop entry);
1186 static oop debugName(oop entry);
1187
1188 // Testers
1189 static bool is_subclass(Klass* klass) {
1190 return vmClasses::VMStorage_klass() != nullptr &&
1191 klass->is_subclass_of(vmClasses::VMStorage_klass());
1192 }
1193 static bool is_instance(oop obj);
1194 };
1195
1196 class jdk_internal_foreign_abi_CallConv: AllStatic {
1197 friend class JavaClasses;
1198
1199 private:
1200 static int _argRegs_offset;
1201 static int _retRegs_offset;
1202
1203 static void compute_offsets();
1204
1205 public:
1206 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1207
1208 // Accessors
1209 static objArrayOop argRegs(oop entry);
1210 static objArrayOop retRegs(oop entry);
1211
1212 // Testers
1213 static bool is_subclass(Klass* klass) {
1214 return vmClasses::CallConv_klass() != nullptr &&
1215 klass->is_subclass_of(vmClasses::CallConv_klass());
1216 }
1217 static bool is_instance(oop obj);
1218 };
1219
1220 // Interface to java.lang.invoke.MemberName objects
1221 // (These are a private interface for Java code to query the class hierarchy.)
1222
1223 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1224 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1225
1226 class java_lang_invoke_ResolvedMethodName : AllStatic {
1227 friend class JavaClasses;
1228
1229 static int _vmtarget_offset;
1230 static int _vmholder_offset;
1231
1232 static void compute_offsets();
1233 public:
1234 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1235
1236 static int vmtarget_offset() { CHECK_INIT(_vmtarget_offset); }
1237
1238 static Method* vmtarget(oop resolved_method);
1239 static void set_vmtarget(oop resolved_method, Method* method);
1240
1241 static void set_vmholder(oop resolved_method, oop holder);
1242
1243 // find or create resolved member name
1244 static oop find_resolved_method(const methodHandle& m, TRAPS);
1245
1246 static bool is_instance(oop resolved_method);
1247 };
1248
1249
1250 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1251 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1252
1253
1254 class java_lang_invoke_MemberName: AllStatic {
1255 friend class JavaClasses;
1256
1257 private:
1258 // From java.lang.invoke.MemberName:
1259 // private Class<?> clazz; // class in which the method is defined
1260 // private String name; // may be null if not yet materialized
1261 // private Object type; // may be null if not yet materialized
1262 // private int flags; // modifier bits; see reflect.Modifier
1263 // private ResolvedMethodName method; // holds VM-specific target value
1264 // private intptr_t vmindex; // member index within class or interface
1265 static int _clazz_offset;
1266 static int _name_offset;
1267 static int _type_offset;
1268 static int _flags_offset;
1269 static int _method_offset;
1270 static int _vmindex_offset;
1271
1272 static void compute_offsets();
1273
1274 public:
1275 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1276 // Accessors
1277 static oop clazz(oop mname);
1278 static void set_clazz(oop mname, oop clazz);
1279
1280 static oop type(oop mname);
1281 static void set_type(oop mname, oop type);
1282
1283 static oop name(oop mname);
1284 static void set_name(oop mname, oop name);
1285
1286 static int flags(oop mname);
1287 static void set_flags(oop mname, int flags);
1288
1289 // Link through ResolvedMethodName field to get Method*
1290 static Method* vmtarget(oop mname);
1291 static void set_method(oop mname, oop method);
1292
1293 static intptr_t vmindex(oop mname);
1294 static void set_vmindex(oop mname, intptr_t index);
1295
1296 // Testers
1297 static bool is_subclass(Klass* klass) {
1298 return klass->is_subclass_of(vmClasses::MemberName_klass());
1299 }
1300 static bool is_instance(oop obj);
1301
1302 static bool is_method(oop obj);
1303
1304 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1305 enum {
1306 MN_IS_METHOD = 0x00010000, // method (not constructor)
1307 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1308 MN_IS_FIELD = 0x00040000, // field
1309 MN_IS_TYPE = 0x00080000, // nested type
1310 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1311 MN_TRUSTED_FINAL = 0x00200000, // trusted final field
1312 MN_HIDDEN_MEMBER = 0x00400000, // @Hidden annotation detected
1313 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1314 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1315 MN_NESTMATE_CLASS = 0x00000001,
1316 MN_HIDDEN_CLASS = 0x00000002,
1317 MN_STRONG_LOADER_LINK = 0x00000004,
1318 MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1319 // Lookup modes
1320 MN_MODULE_MODE = 0x00000010,
1321 MN_UNCONDITIONAL_MODE = 0x00000020,
1322 MN_TRUSTED_MODE = -1
1323 };
1324
1325 // Accessors for code generation:
1326 static int clazz_offset() { CHECK_INIT(_clazz_offset); }
1327 static int type_offset() { CHECK_INIT(_type_offset); }
1328 static int flags_offset() { CHECK_INIT(_flags_offset); }
1329 static int method_offset() { CHECK_INIT(_method_offset); }
1330 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1331 };
1332
1333
1334 // Interface to java.lang.invoke.MethodType objects
1335
1336 class java_lang_invoke_MethodType: AllStatic {
1337 friend class JavaClasses;
1338
1339 private:
1340 static int _rtype_offset;
1341 static int _ptypes_offset;
1342
1343 static void compute_offsets();
1344
1345 public:
1346 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1347 // Accessors
1348 static oop rtype(oop mt);
1349 static objArrayOop ptypes(oop mt);
1350
1351 static oop ptype(oop mt, int index);
1352 static int ptype_count(oop mt);
1353
1354 static int ptype_slot_count(oop mt); // extra counts for long/double
1355 static int rtype_slot_count(oop mt); // extra counts for long/double
1356
1357 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1358 static void print_signature(oop mt, outputStream* st);
1359
1360 static bool is_instance(oop obj);
1361
1362 static bool equals(oop mt1, oop mt2);
1363
1364 // Accessors for code generation:
1365 static int rtype_offset() { CHECK_INIT(_rtype_offset); }
1366 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); }
1367 };
1368
1369
1370 // Interface to java.lang.invoke.CallSite objects
1371
1372 class java_lang_invoke_CallSite: AllStatic {
1373 friend class JavaClasses;
1374
1375 private:
1376 static int _target_offset;
1377 static int _context_offset;
1378
1379 static void compute_offsets();
1380
1381 public:
1382 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1383 // Accessors
1384 static oop target( oop site);
1385 static void set_target( oop site, oop target);
1386 static void set_target_volatile( oop site, oop target);
1387
1388 static oop context_no_keepalive(oop site);
1389
1390 // Testers
1391 static bool is_subclass(Klass* klass) {
1392 return klass->is_subclass_of(vmClasses::CallSite_klass());
1393 }
1394 static bool is_instance(oop obj);
1395
1396 // Accessors for code generation:
1397 static int target_offset() { CHECK_INIT(_target_offset); }
1398 static int context_offset() { CHECK_INIT(_context_offset); }
1399 };
1400
1401 // Interface to java.lang.invoke.ConstantCallSite objects
1402
1403 class java_lang_invoke_ConstantCallSite: AllStatic {
1404 friend class JavaClasses;
1405
1406 private:
1407 static int _is_frozen_offset;
1408
1409 static void compute_offsets();
1410
1411 public:
1412 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1413 // Accessors
1414 static jboolean is_frozen(oop site);
1415
1416 // Testers
1417 static bool is_subclass(Klass* klass) {
1418 return klass->is_subclass_of(vmClasses::ConstantCallSite_klass());
1419 }
1420 static bool is_instance(oop obj);
1421 };
1422
1423 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1424
1425 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1426 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1427 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1428
1429 class DependencyContext;
1430
1431 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1432 friend class JavaClasses;
1433
1434 private:
1435 static int _vmdependencies_offset;
1436 static int _last_cleanup_offset;
1437
1438 static void compute_offsets();
1439
1440 public:
1441 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1442 // Accessors
1443 static DependencyContext vmdependencies(oop context);
1444
1445 // Testers
1446 static bool is_subclass(Klass* klass) {
1447 return klass->is_subclass_of(vmClasses::Context_klass());
1448 }
1449 static bool is_instance(oop obj);
1450 };
1451
1452 // Interface to java.security.AccessControlContext objects
1453
1454 class java_security_AccessControlContext: AllStatic {
1455 private:
1456 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1457 // so we compute the offsets at startup rather than hard-wiring them.
1458 static int _context_offset;
1459 static int _privilegedContext_offset;
1460 static int _isPrivileged_offset;
1461 static int _isAuthorized_offset;
1462
1463 static void compute_offsets();
1464 public:
1465 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1466 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1467
1468 // Debugging/initialization
1469 friend class JavaClasses;
1470 };
1471
1472
1473 // Interface to java.lang.ClassLoader objects
1474
1475 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1476 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1477
1478 class java_lang_ClassLoader : AllStatic {
1479 private:
1480 static int _loader_data_offset;
1481 static int _parent_offset;
1482 static int _parallelCapable_offset;
1483 static int _name_offset;
1484 static int _nameAndId_offset;
1485 static int _unnamedModule_offset;
1486
1487 static void compute_offsets();
1488
1489 public:
1490 // Support for CDS
1491 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1492 static int loader_data_offset() { return _loader_data_offset; }
1493
1494 static ClassLoaderData* loader_data_acquire(oop loader);
1495 static ClassLoaderData* loader_data(oop loader);
1496 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1497
1498 static oop parent(oop loader);
1499 static oop parent_no_keepalive(oop loader);
1500 static oop name(oop loader);
1501 static oop nameAndId(oop loader);
1502 static bool isAncestor(oop loader, oop cl);
1503
1504 // Support for parallelCapable field
1505 static bool parallelCapable(oop the_class_mirror);
1506
1507 static bool is_trusted_loader(oop loader);
1508
1509 // Return true if this is one of the class loaders associated with
1510 // the generated bytecodes for serialization constructor returned
1511 // by sun.reflect.ReflectionFactory::newConstructorForSerialization
1512 static bool is_reflection_class_loader(oop loader);
1513
1514 // Fix for 4474172
1515 static oop non_reflection_class_loader(oop loader);
1516
1517 // Testers
1518 static bool is_subclass(Klass* klass) {
1519 return klass->is_subclass_of(vmClasses::ClassLoader_klass());
1520 }
1521 static bool is_instance(oop obj);
1522
1523 static oop unnamedModule(oop loader);
1524
1525 // Debugging
1526 friend class JavaClasses;
1527 };
1528
1529
1530 // Interface to java.lang.System objects
1531
1532 class java_lang_System : AllStatic {
1533 private:
1534 static int _static_in_offset;
1535 static int _static_out_offset;
1536 static int _static_err_offset;
1537 static int _static_security_offset;
1538 static int _static_allow_security_offset;
1539 static int _static_never_offset;
1540
1541 public:
1542 static int in_offset() { CHECK_INIT(_static_in_offset); }
1543 static int out_offset() { CHECK_INIT(_static_out_offset); }
1544 static int err_offset() { CHECK_INIT(_static_err_offset); }
1545 static bool allow_security_manager();
1546 static bool has_security_manager();
1547
1548 static void compute_offsets();
1549 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1550
1551 // Debugging
1552 friend class JavaClasses;
1553 };
1554
1555
1556 // Interface to java.lang.StackTraceElement objects
1557
1558 class java_lang_StackTraceElement: AllStatic {
1559 private:
1560 static int _declaringClassObject_offset;
1561 static int _classLoaderName_offset;
1562 static int _moduleName_offset;
1563 static int _moduleVersion_offset;
1564 static int _declaringClass_offset;
1565 static int _methodName_offset;
1566 static int _fileName_offset;
1567 static int _lineNumber_offset;
1568
1569 // Setters
1570 static void set_classLoaderName(oop element, oop value);
1571 static void set_moduleName(oop element, oop value);
1572 static void set_moduleVersion(oop element, oop value);
1573 static void set_declaringClass(oop element, oop value);
1574 static void set_methodName(oop element, oop value);
1575 static void set_fileName(oop element, oop value);
1576 static void set_lineNumber(oop element, int value);
1577 static void set_declaringClassObject(oop element, oop value);
1578
1579 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1580 const methodHandle& method, int bci,
1581 Symbol*& source, oop& source_file, int& line_number, TRAPS);
1582
1583 public:
1584 // Create an instance of StackTraceElement
1585 static oop create(const methodHandle& method, int bci, TRAPS);
1586
1587 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1588 int version, int bci, Symbol* name, TRAPS);
1589
1590 static void compute_offsets();
1591 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1592
1593 #if INCLUDE_JVMCI
1594 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1595 #endif
1596
1597 // Debugging
1598 friend class JavaClasses;
1599 };
1600
1601
1602 class Backtrace: AllStatic {
1603 public:
1604 // Helper backtrace functions to store bci|version together.
1605 static int merge_bci_and_version(int bci, int version);
1606 static int merge_mid_and_cpref(int mid, int cpref);
1607 static int bci_at(unsigned int merged);
1608 static int version_at(unsigned int merged);
1609 static int mid_at(unsigned int merged);
1610 static int cpref_at(unsigned int merged);
1611 static int get_line_number(Method* method, int bci);
1612 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1613
1614 // Debugging
1615 friend class JavaClasses;
1616 };
1617
1618 class java_lang_ClassFrameInfo: AllStatic {
1619 private:
1620 static int _classOrMemberName_offset;
1621 static int _flags_offset;
1622
1623 public:
1624 static oop classOrMemberName(oop info);
1625 static int flags(oop info);
1626
1627 // Setters
1628 static void init_class(Handle stackFrame, const methodHandle& m);
1629 static void init_method(Handle stackFrame, const methodHandle& m, TRAPS);
1630
1631 static void compute_offsets();
1632 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1633
1634 // Debugging
1635 friend class JavaClasses;
1636 };
1637
1638 // Interface to java.lang.StackFrameInfo objects
1639
1640 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1641 macro(java_lang_StackFrameInfo, version, short_signature, false)
1642
1643 class java_lang_StackFrameInfo: AllStatic {
1644 private:
1645 static int _type_offset;
1646 static int _name_offset;
1647 static int _bci_offset;
1648 static int _version_offset;
1649 static int _contScope_offset;
1650
1651 public:
1652 // Getters
1653 static oop name(oop info);
1654 static oop type(oop info);
1655 static Method* get_method(oop info);
1656
1657 // Setters
1658 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS);
1659 static void set_name(oop info, oop value);
1660 static void set_type(oop info, oop value);
1661 static void set_bci(oop info, int value);
1662
1663 static void set_version(oop info, short value);
1664 static void set_contScope(oop info, oop value);
1665
1666 static void compute_offsets();
1667 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1668
1669 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1670
1671 // Debugging
1672 friend class JavaClasses;
1673 };
1674
1675 class java_lang_LiveStackFrameInfo: AllStatic {
1676 private:
1677 static int _monitors_offset;
1678 static int _locals_offset;
1679 static int _operands_offset;
1680 static int _mode_offset;
1681
1682 public:
1683 static void set_monitors(oop info, oop value);
1684 static void set_locals(oop info, oop value);
1685 static void set_operands(oop info, oop value);
1686 static void set_mode(oop info, int value);
1687
1688 static void compute_offsets();
1689 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1690
1691 // Debugging
1692 friend class JavaClasses;
1693 };
1694
1695 // Interface to java.lang.reflect.RecordComponent objects
1696
1697 class java_lang_reflect_RecordComponent: AllStatic {
1698 private:
1699 static int _clazz_offset;
1700 static int _name_offset;
1701 static int _type_offset;
1702 static int _accessor_offset;
1703 static int _signature_offset;
1704 static int _annotations_offset;
1705 static int _typeAnnotations_offset;
1706
1707 // Setters
1708 static void set_clazz(oop element, oop value);
1709 static void set_name(oop element, oop value);
1710 static void set_type(oop element, oop value);
1711 static void set_accessor(oop element, oop value);
1712 static void set_signature(oop element, oop value);
1713 static void set_annotations(oop element, oop value);
1714 static void set_typeAnnotations(oop element, oop value);
1715
1716 public:
1717 // Create an instance of RecordComponent
1718 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1719
1720 static void compute_offsets();
1721 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1722
1723 // Debugging
1724 friend class JavaClasses;
1725 };
1726
1727
1728 // Interface to java.lang.AssertionStatusDirectives objects
1729
1730 class java_lang_AssertionStatusDirectives: AllStatic {
1731 private:
1732 static int _classes_offset;
1733 static int _classEnabled_offset;
1734 static int _packages_offset;
1735 static int _packageEnabled_offset;
1736 static int _deflt_offset;
1737
1738 public:
1739 // Setters
1740 static void set_classes(oop obj, oop val);
1741 static void set_classEnabled(oop obj, oop val);
1742 static void set_packages(oop obj, oop val);
1743 static void set_packageEnabled(oop obj, oop val);
1744 static void set_deflt(oop obj, bool val);
1745
1746 static void compute_offsets();
1747 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1748
1749 // Debugging
1750 friend class JavaClasses;
1751 };
1752
1753
1754 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1755 private:
1756 static int _owner_offset;
1757 public:
1758 static void compute_offsets();
1759 static oop get_owner_threadObj(oop obj);
1760 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1761 };
1762
1763 // Interface to jdk.internal.misc.UnsafeConsants
1764
1765 class jdk_internal_misc_UnsafeConstants : AllStatic {
1766 public:
1767 static void set_unsafe_constants();
1768 static void compute_offsets() { }
1769 static void serialize_offsets(SerializeClosure* f) { }
1770 };
1771
1772 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects
1773
1774 class vector_VectorPayload : AllStatic {
1775 private:
1776 static int _payload_offset;
1777 public:
1778 static void set_payload(oop o, oop val);
1779
1780 static void compute_offsets();
1781 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1782
1783 // Testers
1784 static bool is_subclass(Klass* klass) {
1785 return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass());
1786 }
1787 static bool is_instance(oop obj);
1788 };
1789
1790 class java_lang_Integer : AllStatic {
1791 public:
1792 static jint value(oop obj);
1793 };
1794
1795 class java_lang_Long : AllStatic {
1796 public:
1797 static jlong value(oop obj);
1798 };
1799
1800 class java_lang_Character : AllStatic {
1801 public:
1802 static jchar value(oop obj);
1803 };
1804
1805 class java_lang_Short : AllStatic {
1806 public:
1807 static jshort value(oop obj);
1808 };
1809
1810 class java_lang_Byte : AllStatic {
1811 public:
1812 static jbyte value(oop obj);
1813 };
1814
1815 class java_lang_Boolean : AllStatic {
1816 private:
1817 static int _static_TRUE_offset;
1818 static int _static_FALSE_offset;
1819 public:
1820 static Symbol* symbol();
1821 static void compute_offsets(InstanceKlass* k);
1822 static oop get_TRUE(InstanceKlass *k);
1823 static oop get_FALSE(InstanceKlass *k);
1824 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1825 static jboolean value(oop obj);
1826 };
1827
1828 class java_lang_Integer_IntegerCache : AllStatic {
1829 private:
1830 static int _static_cache_offset;
1831 public:
1832 static Symbol* symbol();
1833 static void compute_offsets(InstanceKlass* k);
1834 static objArrayOop cache(InstanceKlass *k);
1835 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1836 };
1837
1838 class java_lang_Long_LongCache : AllStatic {
1839 private:
1840 static int _static_cache_offset;
1841 public:
1842 static Symbol* symbol();
1843 static void compute_offsets(InstanceKlass* k);
1844 static objArrayOop cache(InstanceKlass *k);
1845 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1846 };
1847
1848 class java_lang_Character_CharacterCache : AllStatic {
1849 private:
1850 static int _static_cache_offset;
1851 public:
1852 static Symbol* symbol();
1853 static void compute_offsets(InstanceKlass* k);
1854 static objArrayOop cache(InstanceKlass *k);
1855 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1856 };
1857
1858 class java_lang_Short_ShortCache : AllStatic {
1859 private:
1860 static int _static_cache_offset;
1861 public:
1862 static Symbol* symbol();
1863 static void compute_offsets(InstanceKlass* k);
1864 static objArrayOop cache(InstanceKlass *k);
1865 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1866 };
1867
1868 class java_lang_Byte_ByteCache : AllStatic {
1869 private:
1870 static int _static_cache_offset;
1871 public:
1872 static Symbol* symbol();
1873 static void compute_offsets(InstanceKlass* k);
1874 static objArrayOop cache(InstanceKlass *k);
1875 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1876 };
1877
1878
1879 // Interface to java.lang.InternalError objects
1880
1881 #define INTERNALERROR_INJECTED_FIELDS(macro) \
1882 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1883
1884 class java_lang_InternalError : AllStatic {
1885 private:
1886 static int _during_unsafe_access_offset;
1887 public:
1888 static jboolean during_unsafe_access(oop internal_error);
1889 static void set_during_unsafe_access(oop internal_error);
1890 static void compute_offsets();
1891 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1892 };
1893
1894 // Use to declare fields that need to be injected into Java classes
1895 // for the JVM to use. The name_index and signature_index are
1896 // declared in vmSymbols. The may_be_java flag is used to declare
1897 // fields that might already exist in Java but should be injected if
1898 // they don't. Otherwise the field is unconditionally injected and
1899 // the JVM uses the injected one. This is to ensure that name
1900 // collisions don't occur. In general may_be_java should be false
1901 // unless there's a good reason.
1902
1903 class InjectedField {
1904 public:
1905 const vmClassID klass_id;
1906 const vmSymbolID name_index;
1907 const vmSymbolID signature_index;
1908 const bool may_be_java;
1909
1910
1911 Klass* klass() const { return vmClasses::klass_at(klass_id); }
1912 Symbol* name() const { return lookup_symbol(name_index); }
1913 Symbol* signature() const { return lookup_symbol(signature_index); }
1914
1915 int compute_offset();
1916
1917 // Find the Symbol for this index
1918 static Symbol* lookup_symbol(vmSymbolID symbol_index) {
1919 return Symbol::vm_symbol_at(symbol_index);
1920 }
1921 };
1922
1923
1924 // Interface to hard-coded offset checking
1925
1926 enum class InjectedFieldID : int;
1927
1928 class JavaClasses : AllStatic {
1929 private:
1930
1931 static InjectedField _injected_fields[];
1932
1933 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1934 public:
1935
1936 static int compute_injected_offset(InjectedFieldID id);
1937
1938 static void compute_offsets();
1939 static void check_offsets() PRODUCT_RETURN;
1940 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1941 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1942 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1943
1944 static void compute_offset(int &dest_offset,
1945 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
1946 bool is_static = false);
1947 static void compute_offset(int& dest_offset, InstanceKlass* ik,
1948 const char* name_string, Symbol* signature_symbol,
1949 bool is_static = false);
1950 };
1951
1952 #undef CHECK_INIT
1953
1954 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP