1 /*
2 * Copyright (c) 1997, 2023, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_CLASSFILE_JAVACLASSES_HPP
27
28 #include "classfile/vmClasses.hpp"
29 #include "oops/instanceKlass.hpp"
30 #include "oops/oopsHierarchy.hpp"
31 #include "oops/symbol.hpp"
32 #include "runtime/handles.hpp"
33 #include "runtime/os.hpp"
34 #include "utilities/macros.hpp"
35 #include "utilities/vmEnums.hpp"
36
37 class JvmtiThreadState;
38 class RecordComponent;
39 class SerializeClosure;
40
41 #define CHECK_INIT(offset) assert(offset != 0, "should be initialized"); return offset;
42
43 // Interface to java.lang.Object objects
44
45 class java_lang_Object : AllStatic {
46 public:
47 static void register_natives(TRAPS);
48 };
49
50 // Interface to java.lang.String objects
51
52 // The flags field is a collection of bits representing boolean values used
53 // internally by the VM.
54 #define STRING_INJECTED_FIELDS(macro) \
55 macro(java_lang_String, flags, byte_signature, false)
56
57 class java_lang_String : AllStatic {
58 private:
59 static int _value_offset;
60 static int _hash_offset;
61 static int _hashIsZero_offset;
62 static int _coder_offset;
63 static int _flags_offset;
64
65 static bool _initialized;
66
67 static Handle basic_create(int length, bool byte_arr, TRAPS);
68
69 static inline void set_coder(oop string, jbyte coder);
70
71 // Bitmasks for values in the injected flags field.
72 static const uint8_t _deduplication_forbidden_mask = 1 << 0;
73 static const uint8_t _deduplication_requested_mask = 1 << 1;
74
75 static int flags_offset() { CHECK_INIT(_flags_offset); }
76 // Return the address of the injected flags field.
77 static inline uint8_t* flags_addr(oop java_string);
78 // Test whether the designated bit of the injected flags field is set.
79 static inline bool is_flag_set(oop java_string, uint8_t flag_mask);
80 // Atomically test and set the designated bit of the injected flags field,
81 // returning true if the bit was already set.
82 static bool test_and_set_flag(oop java_string, uint8_t flag_mask);
83
84 static inline unsigned int hash_code_impl(oop java_string, bool update);
85
86 public:
87
88 // Coders
89 enum Coder {
90 CODER_LATIN1 = 0,
91 CODER_UTF16 = 1
92 };
93
94 static void compute_offsets();
95 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
96
97 // Instance creation
98 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
99 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
100 static Handle create_from_str(const char* utf8_str, TRAPS);
101 static oop create_oop_from_str(const char* utf8_str, TRAPS);
102 static Handle create_from_symbol(Symbol* symbol, TRAPS);
103 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
104
105 static void set_compact_strings(bool value);
106
107 static int value_offset() { CHECK_INIT(_value_offset); }
108 static int coder_offset() { CHECK_INIT(_coder_offset); }
109
110 static inline void set_value(oop string, typeArrayOop buffer);
111
112 // Set the deduplication_forbidden flag true. This flag is sticky; once
113 // set it never gets cleared. This is set when a String is interned in
114 // the StringTable, to prevent string deduplication from changing the
115 // String's value array.
116 static inline void set_deduplication_forbidden(oop java_string);
117
118 // Test and set the deduplication_requested flag. Returns the old value
119 // of the flag. This flag is sticky; once set it never gets cleared.
120 // Some GCs may use this flag when deciding whether to request
121 // deduplication of a String, to avoid multiple requests for the same
122 // object.
123 static inline bool test_and_set_deduplication_requested(oop java_string);
124
125 // Accessors
126 static inline typeArrayOop value(oop java_string);
127 static inline typeArrayOop value_no_keepalive(oop java_string);
128 static inline bool hash_is_set(oop string);
129 static inline bool is_latin1(oop java_string);
130 static inline bool deduplication_forbidden(oop java_string);
131 static inline bool deduplication_requested(oop java_string);
132 static inline int length(oop java_string);
133 static inline int length(oop java_string, typeArrayOop string_value);
134 static int utf8_length(oop java_string);
135 static int utf8_length(oop java_string, typeArrayOop string_value);
136
137 // String converters
138 static char* as_utf8_string(oop java_string);
139 static char* as_utf8_string(oop java_string, int& length);
140 static char* as_utf8_string_full(oop java_string, char* buf, int buflen, int& length);
141 static char* as_utf8_string(oop java_string, char* buf, int buflen);
142 static char* as_utf8_string(oop java_string, int start, int len);
143 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
144 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
145 static char* as_platform_dependent_str(Handle java_string, TRAPS);
146 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
147 static jchar* as_unicode_string_or_null(oop java_string, int& length);
148 // produce an ascii string with all other values quoted using \u####
149 static char* as_quoted_ascii(oop java_string);
150
151 // Compute the hash value for a java.lang.String object which would
152 // contain the characters passed in.
153 //
154 // As the hash value used by the String object itself, in
155 // String.hashCode(). This value is normally calculated in Java code
156 // in the String.hashCode method(), but is precomputed for String
157 // objects in the shared archive file.
158 // hash P(31) from Kernighan & Ritchie
159 //
160 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
161 static unsigned int hash_code(const jchar* s, int len) {
162 unsigned int h = 0;
163 while (len-- > 0) {
164 h = 31*h + (unsigned int) *s;
165 s++;
166 }
167 return h;
168 }
169
170 static unsigned int hash_code(const jbyte* s, int len) {
171 unsigned int h = 0;
172 while (len-- > 0) {
173 h = 31*h + (((unsigned int) *s) & 0xFF);
174 s++;
175 }
176 return h;
177 }
178
179 static unsigned int hash_code(oop java_string);
180 static unsigned int hash_code_noupdate(oop java_string);
181
182 static bool equals(oop java_string, const jchar* chars, int len);
183 static bool equals(oop str1, oop str2);
184 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
185
186 // Conversion between '.' and '/' formats, and allocate a String from the result.
187 static Handle externalize_classname(Symbol* java_name, TRAPS);
188
189 // Conversion
190 static Symbol* as_symbol(oop java_string);
191 static Symbol* as_symbol_or_null(oop java_string);
192
193 // Tester
194 static inline bool is_instance(oop obj);
195
196 // Debugging
197 static void print(oop java_string, outputStream* st);
198 friend class JavaClasses;
199 friend class StringTable;
200 };
201
202
203 // Interface to java.lang.Class objects
204
205 #define CLASS_INJECTED_FIELDS(macro) \
206 macro(java_lang_Class, klass, intptr_signature, false) \
207 macro(java_lang_Class, array_klass, intptr_signature, false) \
208 macro(java_lang_Class, oop_size, int_signature, false) \
209 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
210 macro(java_lang_Class, protection_domain, object_signature, false) \
211 macro(java_lang_Class, signers, object_signature, false) \
212 macro(java_lang_Class, source_file, object_signature, false) \
213
214 class java_lang_Class : AllStatic {
215 friend class VMStructs;
216 friend class JVMCIVMStructs;
217
218 private:
219
220 // The fake offsets are added by the class loader when java.lang.Class is loaded
221
222 static int _klass_offset;
223 static int _array_klass_offset;
224
225 static int _oop_size_offset;
226 static int _static_oop_field_count_offset;
227
228 static int _protection_domain_offset;
229 static int _signers_offset;
230 static int _class_loader_offset;
231 static int _module_offset;
232 static int _component_mirror_offset;
233 static int _name_offset;
234 static int _source_file_offset;
235 static int _classData_offset;
236 static int _classRedefinedCount_offset;
237
238 static bool _offsets_computed;
239
240 static GrowableArray<Klass*>* _fixup_mirror_list;
241 static GrowableArray<Klass*>* _fixup_module_field_list;
242
243 static void set_protection_domain(oop java_class, oop protection_domain);
244 static void set_class_loader(oop java_class, oop class_loader);
245 static void set_component_mirror(oop java_class, oop comp_mirror);
246 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
247 Handle classData, TRAPS);
248 static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
249 public:
250 static void allocate_fixup_lists();
251 static void compute_offsets();
252
253 // Instance creation
254 static void allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
255 Handle& mirror, Handle& comp_mirror, TRAPS); // returns mirror and comp_mirror
256 static void create_mirror(Klass* k, Handle class_loader, Handle module,
257 Handle protection_domain, Handle classData, TRAPS);
258 static void fixup_mirror(Klass* k, TRAPS);
259 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
260
261 // Archiving
262 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
263 static void create_scratch_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
264 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
265 Handle protection_domain,
266 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
267
268 static void fixup_module_field(Klass* k, Handle module);
269
270 // Conversion
271 static Klass* as_Klass(oop java_class);
272 static void set_klass(oop java_class, Klass* klass);
273 static BasicType as_BasicType(oop java_class, Klass** reference_klass = nullptr);
274 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
275 static void print_signature(oop java_class, outputStream *st);
276 static const char* as_external_name(oop java_class);
277 // Testing
278 static bool is_instance(oop obj);
279
280 static bool is_primitive(oop java_class);
281 static BasicType primitive_type(oop java_class);
282 static oop primitive_mirror(BasicType t);
283 // JVM_NewArray support
284 static Klass* array_klass_acquire(oop java_class);
285 static void release_set_array_klass(oop java_class, Klass* klass);
286 // compiler support for class operations
287 static int klass_offset() { CHECK_INIT(_klass_offset); }
288 static int array_klass_offset() { CHECK_INIT(_array_klass_offset); }
289 // Support for classRedefinedCount field
290 static int classRedefinedCount(oop the_class_mirror);
291 static void set_classRedefinedCount(oop the_class_mirror, int value);
292
293 // Support for embedded per-class oops
294 static oop protection_domain(oop java_class);
295 static oop component_mirror(oop java_class);
296 static objArrayOop signers(oop java_class);
297 static void set_signers(oop java_class, objArrayOop signers);
298 static oop class_data(oop java_class);
299 static void set_class_data(oop java_class, oop classData);
300
301 static int component_mirror_offset() { return _component_mirror_offset; }
302
303 static oop class_loader(oop java_class);
304 static void set_module(oop java_class, oop module);
305 static oop module(oop java_class);
306
307 static oop name(Handle java_class, TRAPS);
308
309 static oop source_file(oop java_class);
310 static void set_source_file(oop java_class, oop source_file);
311
312 static size_t oop_size(oop java_class);
313 static void set_oop_size(HeapWord* java_class, size_t size);
314 static int static_oop_field_count(oop java_class);
315 static void set_static_oop_field_count(oop java_class, int size);
316
317 static GrowableArray<Klass*>* fixup_mirror_list() {
318 return _fixup_mirror_list;
319 }
320 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
321 _fixup_mirror_list = v;
322 }
323
324 static GrowableArray<Klass*>* fixup_module_field_list() {
325 return _fixup_module_field_list;
326 }
327 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
328 _fixup_module_field_list = v;
329 }
330
331 // Debugging
332 friend class JavaClasses;
333 };
334
335 // Interface to java.lang.Thread objects
336
337 #define THREAD_INJECTED_FIELDS(macro) \
338 macro(java_lang_Thread, jvmti_thread_state, intptr_signature, false) \
339 macro(java_lang_Thread, jvmti_VTMS_transition_disable_count, int_signature, false) \
340 macro(java_lang_Thread, jvmti_is_in_VTMS_transition, bool_signature, false) \
341 JFR_ONLY(macro(java_lang_Thread, jfr_epoch, short_signature, false))
342
343 class java_lang_Thread : AllStatic {
344 friend class java_lang_VirtualThread;
345 friend class JVMCIVMStructs;
346 private:
347 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
348 // so we compute the offsets at startup rather than hard-wiring them.
349 static int _holder_offset;
350 static int _name_offset;
351 static int _contextClassLoader_offset;
352 static int _inheritedAccessControlContext_offset;
353 static int _eetop_offset;
354 static int _jvmti_thread_state_offset;
355 static int _jvmti_VTMS_transition_disable_count_offset;
356 static int _jvmti_is_in_VTMS_transition_offset;
357 static int _interrupted_offset;
358 static int _tid_offset;
359 static int _continuation_offset;
360 static int _park_blocker_offset;
361 static int _scopedValueBindings_offset;
362 JFR_ONLY(static int _jfr_epoch_offset;)
363
364 static void compute_offsets();
365
366 public:
367 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
368
369 // Returns the JavaThread associated with the thread obj
370 static JavaThread* thread(oop java_thread);
371 static JavaThread* thread_acquire(oop java_thread);
372 // Set JavaThread for instance
373 static void set_thread(oop java_thread, JavaThread* thread);
374 static void release_set_thread(oop java_thread, JavaThread* thread);
375 // FieldHolder
376 static oop holder(oop java_thread);
377 // Interrupted status
378 static bool interrupted(oop java_thread);
379 static void set_interrupted(oop java_thread, bool val);
380 // Name
381 static oop name(oop java_thread);
382 static void set_name(oop java_thread, oop name);
383 // Priority
384 static ThreadPriority priority(oop java_thread);
385 static void set_priority(oop java_thread, ThreadPriority priority);
386 // Thread group
387 static oop threadGroup(oop java_thread);
388 // Alive (NOTE: this is not really a field, but provides the correct
389 // definition without doing a Java call)
390 static bool is_alive(oop java_thread);
391 // Daemon
392 static bool is_daemon(oop java_thread);
393 static void set_daemon(oop java_thread);
394 // Context ClassLoader
395 static oop context_class_loader(oop java_thread);
396 // Control context
397 static oop inherited_access_control_context(oop java_thread);
398 // Stack size hint
399 static jlong stackSize(oop java_thread);
400 // Thread ID
401 static int64_t thread_id(oop java_thread);
402 static ByteSize thread_id_offset();
403 // Continuation
404 static inline oop continuation(oop java_thread);
405
406 static JvmtiThreadState* jvmti_thread_state(oop java_thread);
407 static void set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state);
408 static int VTMS_transition_disable_count(oop java_thread);
409 static void inc_VTMS_transition_disable_count(oop java_thread);
410 static void dec_VTMS_transition_disable_count(oop java_thread);
411 static bool is_in_VTMS_transition(oop java_thread);
412 static void set_is_in_VTMS_transition(oop java_thread, bool val);
413 static int is_in_VTMS_transition_offset();
414
415 // Clear all scoped value bindings on error
416 static void clear_scopedValueBindings(oop java_thread);
417
418 // Blocker object responsible for thread parking
419 static oop park_blocker(oop java_thread);
420
421 // Write thread status info to threadStatus field of java.lang.Thread.
422 static void set_thread_status(oop java_thread_oop, JavaThreadStatus status);
423 // Read thread status info from threadStatus field of java.lang.Thread.
424 static JavaThreadStatus get_thread_status(oop java_thread_oop);
425
426 static const char* thread_status_name(oop java_thread_oop);
427
428 // Fill in current stack trace, can cause GC
429 static oop async_get_stack_trace(oop java_thread, TRAPS);
430
431 JFR_ONLY(static u2 jfr_epoch(oop java_thread);)
432 JFR_ONLY(static void set_jfr_epoch(oop java_thread, u2 epoch);)
433 JFR_ONLY(static int jfr_epoch_offset() { CHECK_INIT(_jfr_epoch_offset); })
434
435 // Debugging
436 friend class JavaClasses;
437 };
438
439 // Interface to java.lang.Thread$FieldHolder objects
440
441 class java_lang_Thread_FieldHolder : AllStatic {
442 private:
443 static int _group_offset;
444 static int _priority_offset;
445 static int _stackSize_offset;
446 static int _daemon_offset;
447 static int _thread_status_offset;
448
449 static void compute_offsets();
450
451 public:
452 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
453
454 static oop threadGroup(oop holder);
455
456 static ThreadPriority priority(oop holder);
457 static void set_priority(oop holder, ThreadPriority priority);
458
459 static jlong stackSize(oop holder);
460
461 static bool is_daemon(oop holder);
462 static void set_daemon(oop holder, bool val);
463
464 static void set_thread_status(oop holder, JavaThreadStatus status);
465 static JavaThreadStatus get_thread_status(oop holder);
466
467 friend class JavaClasses;
468 };
469
470 // Interface to java.lang.Thread$Constants objects
471
472 class java_lang_Thread_Constants : AllStatic {
473 private:
474 static int _static_VTHREAD_GROUP_offset;
475 static int _static_NOT_SUPPORTED_CLASSLOADER_offset;
476
477 static void compute_offsets();
478 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
479
480 public:
481 static oop get_VTHREAD_GROUP();
482
483 friend class JavaClasses;
484 };
485
486 // Interface to java.lang.ThreadGroup objects
487
488 class java_lang_ThreadGroup : AllStatic {
489 private:
490 static int _parent_offset;
491 static int _name_offset;
492 static int _maxPriority_offset;
493 static int _daemon_offset;
494
495 static void compute_offsets();
496 public:
497 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
498
499 // parent ThreadGroup
500 static oop parent(oop java_thread_group);
501 // name
502 static const char* name(oop java_thread_group);
503 // maxPriority in group
504 static ThreadPriority maxPriority(oop java_thread_group);
505 // Daemon
506 static bool is_daemon(oop java_thread_group);
507
508 // Debugging
509 friend class JavaClasses;
510 };
511
512
513 // Interface to java.lang.VirtualThread objects
514
515 class java_lang_VirtualThread : AllStatic {
516 private:
517 static int static_vthread_scope_offset;
518 static int _carrierThread_offset;
519 static int _continuation_offset;
520 static int _state_offset;
521 JFR_ONLY(static int _jfr_epoch_offset;)
522 public:
523 enum {
524 NEW = 0,
525 STARTED = 1,
526 RUNNABLE = 2,
527 RUNNING = 3,
528 PARKING = 4,
529 PARKED = 5,
530 PINNED = 6,
531 TIMED_PARKING = 7,
532 TIMED_PARKED = 8,
533 TIMED_PINNED = 9,
534 YIELDING = 10,
535 TERMINATED = 99,
536
537 // additional state bits
538 SUSPENDED = 1 << 8, // suspended when unmounted
539 };
540
541 static void compute_offsets();
542 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
543
544 // Testers
545 static bool is_subclass(Klass* klass) {
546 return klass->is_subclass_of(vmClasses::VirtualThread_klass());
547 }
548 static bool is_instance(oop obj);
549
550 static oop vthread_scope();
551 static oop carrier_thread(oop vthread);
552 static oop continuation(oop vthread);
553 static int state(oop vthread);
554 static JavaThreadStatus map_state_to_thread_status(int state);
555 };
556
557
558 // Interface to java.lang.Throwable objects
559
560 class java_lang_Throwable: AllStatic {
561 friend class BacktraceBuilder;
562 friend class BacktraceIterator;
563
564 private:
565 // Trace constants
566 enum {
567 trace_methods_offset = 0,
568 trace_bcis_offset = 1,
569 trace_mirrors_offset = 2,
570 trace_names_offset = 3,
571 trace_conts_offset = 4,
572 trace_next_offset = 5,
573 trace_hidden_offset = 6,
574 trace_size = 7,
575 trace_chunk_size = 32
576 };
577
578 static int _backtrace_offset;
579 static int _detailMessage_offset;
580 static int _stackTrace_offset;
581 static int _depth_offset;
582 static int _cause_offset;
583 static int _static_unassigned_stacktrace_offset;
584
585 // StackTrace (programmatic access, new since 1.4)
586 static void clear_stacktrace(oop throwable);
587 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
588 static void set_stacktrace(oop throwable, oop st_element_array);
589 static oop unassigned_stacktrace();
590
591 public:
592 // Backtrace
593 static oop backtrace(oop throwable);
594 static void set_backtrace(oop throwable, oop value);
595 static int depth(oop throwable);
596 static void set_depth(oop throwable, int value);
597 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
598 // Message
599 static oop message(oop throwable);
600 static oop cause(oop throwable);
601 static void set_message(oop throwable, oop value);
602 static Symbol* detail_message(oop throwable);
603 static void print_stack_element(outputStream *st, Method* method, int bci);
604
605 static void compute_offsets();
606 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
607
608 // Allocate space for backtrace (created but stack trace not filled in)
609 static void allocate_backtrace(Handle throwable, TRAPS);
610 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
611 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
612 // Fill in current stack trace, can cause GC
613 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
614 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
615
616 // Programmatic access to stack trace
617 static void get_stack_trace_elements(int depth, Handle backtrace, objArrayHandle stack_trace, TRAPS);
618
619 // For recreating class initialization error exceptions.
620 static Handle create_initialization_error(JavaThread* current, Handle throwable);
621
622 // Printing
623 static void print(oop throwable, outputStream* st);
624 static void print_stack_trace(Handle throwable, outputStream* st);
625 static void java_printStackTrace(Handle throwable, TRAPS);
626 // Debugging
627 friend class JavaClasses;
628 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
629 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
630 };
631
632
633 // Interface to java.lang.reflect.AccessibleObject objects
634
635 class java_lang_reflect_AccessibleObject: AllStatic {
636 private:
637 // Note that to reduce dependencies on the JDK we compute these
638 // offsets at run-time.
639 static int _override_offset;
640
641 static void compute_offsets();
642
643 public:
644 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
645
646 // Accessors
647 static jboolean override(oop reflect);
648 static void set_override(oop reflect, jboolean value);
649
650 // Debugging
651 friend class JavaClasses;
652 };
653
654
655 // Interface to java.lang.reflect.Method objects
656
657 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
658 private:
659 // Note that to reduce dependencies on the JDK we compute these
660 // offsets at run-time.
661 static int _clazz_offset;
662 static int _name_offset;
663 static int _returnType_offset;
664 static int _parameterTypes_offset;
665 static int _exceptionTypes_offset;
666 static int _slot_offset;
667 static int _modifiers_offset;
668 static int _signature_offset;
669 static int _annotations_offset;
670 static int _parameter_annotations_offset;
671 static int _annotation_default_offset;
672
673 static void compute_offsets();
674 public:
675 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
676
677 // Allocation
678 static Handle create(TRAPS);
679
680 // Accessors
681 static oop clazz(oop reflect);
682 static void set_clazz(oop reflect, oop value);
683
684 static void set_name(oop method, oop value);
685
686 static oop return_type(oop method);
687 static void set_return_type(oop method, oop value);
688
689 static oop parameter_types(oop method);
690 static void set_parameter_types(oop method, oop value);
691
692 static int slot(oop reflect);
693 static void set_slot(oop reflect, int value);
694
695 static void set_exception_types(oop method, oop value);
696 static void set_modifiers(oop method, int value);
697 static void set_signature(oop method, oop value);
698 static void set_annotations(oop method, oop value);
699 static void set_parameter_annotations(oop method, oop value);
700 static void set_annotation_default(oop method, oop value);
701
702 // Debugging
703 friend class JavaClasses;
704 };
705
706
707 // Interface to java.lang.reflect.Constructor objects
708
709 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
710 private:
711 // Note that to reduce dependencies on the JDK we compute these
712 // offsets at run-time.
713 static int _clazz_offset;
714 static int _parameterTypes_offset;
715 static int _exceptionTypes_offset;
716 static int _slot_offset;
717 static int _modifiers_offset;
718 static int _signature_offset;
719 static int _annotations_offset;
720 static int _parameter_annotations_offset;
721
722 static void compute_offsets();
723 public:
724 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
725
726 // Allocation
727 static Handle create(TRAPS);
728
729 // Accessors
730 static oop clazz(oop reflect);
731 static void set_clazz(oop reflect, oop value);
732
733 static oop parameter_types(oop constructor);
734 static void set_parameter_types(oop constructor, oop value);
735
736 static int slot(oop reflect);
737 static void set_slot(oop reflect, int value);
738
739 static void set_exception_types(oop constructor, oop value);
740 static void set_modifiers(oop constructor, int value);
741 static void set_signature(oop constructor, oop value);
742 static void set_annotations(oop constructor, oop value);
743 static void set_parameter_annotations(oop method, oop value);
744
745 // Debugging
746 friend class JavaClasses;
747 };
748
749
750 // Interface to java.lang.reflect.Field objects
751
752 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
753 private:
754 // Note that to reduce dependencies on the JDK we compute these
755 // offsets at run-time.
756 static int _clazz_offset;
757 static int _name_offset;
758 static int _type_offset;
759 static int _slot_offset;
760 static int _modifiers_offset;
761 static int _trusted_final_offset;
762 static int _signature_offset;
763 static int _annotations_offset;
764
765 static void compute_offsets();
766
767 public:
768 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
769
770 // Allocation
771 static Handle create(TRAPS);
772
773 // Accessors
774 static oop clazz(oop reflect);
775 static void set_clazz(oop reflect, oop value);
776
777 static oop name(oop field);
778 static void set_name(oop field, oop value);
779
780 static oop type(oop field);
781 static void set_type(oop field, oop value);
782
783 static int slot(oop reflect);
784 static void set_slot(oop reflect, int value);
785
786 static int modifiers(oop field);
787 static void set_modifiers(oop field, int value);
788
789 static void set_trusted_final(oop field);
790
791 static void set_signature(oop constructor, oop value);
792 static void set_annotations(oop constructor, oop value);
793
794 // Debugging
795 friend class JavaClasses;
796 };
797
798 class java_lang_reflect_Parameter {
799 private:
800 // Note that to reduce dependencies on the JDK we compute these
801 // offsets at run-time.
802 static int _name_offset;
803 static int _modifiers_offset;
804 static int _index_offset;
805 static int _executable_offset;
806
807 static void compute_offsets();
808
809 public:
810 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
811
812 // Allocation
813 static Handle create(TRAPS);
814
815 // Accessors
816 static oop name(oop field);
817 static void set_name(oop field, oop value);
818
819 static int index(oop reflect);
820 static void set_index(oop reflect, int value);
821
822 static int modifiers(oop reflect);
823 static void set_modifiers(oop reflect, int value);
824
825 static oop executable(oop constructor);
826 static void set_executable(oop constructor, oop value);
827
828 friend class JavaClasses;
829 };
830
831 #define MODULE_INJECTED_FIELDS(macro) \
832 macro(java_lang_Module, module_entry, intptr_signature, false)
833
834 class java_lang_Module {
835 private:
836 static int _loader_offset;
837 static int _name_offset;
838 static int _module_entry_offset;
839
840 static void compute_offsets();
841
842 public:
843 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
844
845 // Allocation
846 static Handle create(Handle loader, Handle module_name, TRAPS);
847
848 // Testers
849 static bool is_instance(oop obj);
850
851 // Accessors
852 static oop loader(oop module);
853 static void set_loader(oop module, oop value);
854
855 // CDS
856 static int module_entry_offset() { return _module_entry_offset; }
857
858 static oop name(oop module);
859 static void set_name(oop module, oop value);
860
861 static ModuleEntry* module_entry(oop module);
862 static ModuleEntry* module_entry_raw(oop module);
863 static void set_module_entry(oop module, ModuleEntry* module_entry);
864
865 friend class JavaClasses;
866 };
867
868 // Interface to jdk.internal.reflect.ConstantPool objects
869 class reflect_ConstantPool {
870 private:
871 // Note that to reduce dependencies on the JDK we compute these
872 // offsets at run-time.
873 static int _oop_offset;
874
875 static void compute_offsets();
876
877 public:
878 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
879
880 // Allocation
881 static Handle create(TRAPS);
882
883 // Accessors
884 static void set_cp(oop reflect, ConstantPool* value);
885 static int oop_offset() { CHECK_INIT(_oop_offset); }
886
887 static ConstantPool* get_cp(oop reflect);
888
889 // Debugging
890 friend class JavaClasses;
891 };
892
893
894 // Interface to java.lang primitive type boxing objects:
895 // - java.lang.Boolean
896 // - java.lang.Character
897 // - java.lang.Float
898 // - java.lang.Double
899 // - java.lang.Byte
900 // - java.lang.Short
901 // - java.lang.Integer
902 // - java.lang.Long
903
904 // This could be separated out into 8 individual classes.
905
906 class java_lang_boxing_object: AllStatic {
907 private:
908 static int _value_offset;
909 static int _long_value_offset;
910
911 static void compute_offsets();
912 static oop initialize_and_allocate(BasicType type, TRAPS);
913 public:
914 // Allocation. Returns a boxed value, or null for invalid type.
915 static oop create(BasicType type, jvalue* value, TRAPS);
916 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
917 static BasicType get_value(oop box, jvalue* value);
918 static BasicType set_value(oop box, jvalue* value);
919 static BasicType basic_type(oop box);
920 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
921 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
922 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
923 static void print(BasicType type, jvalue* value, outputStream* st);
924
925 static int value_offset(BasicType type) {
926 return is_double_word_type(type) ? _long_value_offset : _value_offset;
927 }
928
929 static void serialize_offsets(SerializeClosure* f);
930
931 // Debugging
932 friend class JavaClasses;
933 };
934
935
936
937 // Interface to java.lang.ref.Reference objects
938
939 class java_lang_ref_Reference: AllStatic {
940 static int _referent_offset;
941 static int _queue_offset;
942 static int _next_offset;
943 static int _discovered_offset;
944
945 static bool _offsets_initialized;
946
947 public:
948 // Accessors
949 static inline oop weak_referent_no_keepalive(oop ref);
950 static inline oop weak_referent(oop ref);
951 static inline oop phantom_referent_no_keepalive(oop ref);
952 static inline oop unknown_referent_no_keepalive(oop ref);
953 static inline void clear_referent(oop ref);
954 static inline void clear_referent_raw(oop ref);
955 static inline HeapWord* referent_addr_raw(oop ref);
956 static inline oop next(oop ref);
957 static inline void set_next(oop ref, oop value);
958 static inline void set_next_raw(oop ref, oop value);
959 static inline HeapWord* next_addr_raw(oop ref);
960 static inline oop discovered(oop ref);
961 static inline void set_discovered(oop ref, oop value);
962 static inline void set_discovered_raw(oop ref, oop value);
963 static inline HeapWord* discovered_addr_raw(oop ref);
964 static bool is_referent_field(oop obj, ptrdiff_t offset);
965 static inline bool is_final(oop ref);
966 static inline bool is_phantom(oop ref);
967 static inline bool is_weak(oop ref);
968 static inline bool is_soft(oop ref);
969
970 static int referent_offset() { CHECK_INIT(_referent_offset); }
971 static int queue_offset() { CHECK_INIT(_queue_offset); }
972 static int next_offset() { CHECK_INIT(_next_offset); }
973 static int discovered_offset() { CHECK_INIT(_discovered_offset); }
974
975 static void compute_offsets();
976 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
977 };
978
979
980 // Interface to java.lang.ref.SoftReference objects
981
982 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
983 static int _timestamp_offset;
984 static int _static_clock_offset;
985
986 public:
987 // Accessors
988 static jlong timestamp(oop ref);
989
990 // Accessors for statics
991 static jlong clock();
992 static void set_clock(jlong value);
993
994 static void compute_offsets();
995 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
996 };
997
998 // Interface to java.lang.invoke.MethodHandle objects
999
1000 class java_lang_invoke_MethodHandle: AllStatic {
1001 friend class JavaClasses;
1002
1003 private:
1004 static int _type_offset; // the MethodType of this MH
1005 static int _form_offset; // the LambdaForm of this MH
1006
1007 static void compute_offsets();
1008
1009 public:
1010 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1011
1012 // Accessors
1013 static oop type(oop mh);
1014 static void set_type(oop mh, oop mtype);
1015
1016 static oop form(oop mh);
1017 static void set_form(oop mh, oop lform);
1018
1019 // Testers
1020 static bool is_subclass(Klass* klass) {
1021 return klass->is_subclass_of(vmClasses::MethodHandle_klass());
1022 }
1023 static bool is_instance(oop obj);
1024
1025 // Accessors for code generation:
1026 static int type_offset() { CHECK_INIT(_type_offset); }
1027 static int form_offset() { CHECK_INIT(_form_offset); }
1028 };
1029
1030 // Interface to java.lang.invoke.DirectMethodHandle objects
1031
1032 class java_lang_invoke_DirectMethodHandle: AllStatic {
1033 friend class JavaClasses;
1034
1035 private:
1036 static int _member_offset; // the MemberName of this DMH
1037
1038 static void compute_offsets();
1039
1040 public:
1041 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1042
1043 // Accessors
1044 static oop member(oop mh);
1045
1046 // Testers
1047 static bool is_subclass(Klass* klass) {
1048 return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass());
1049 }
1050 static bool is_instance(oop obj);
1051
1052 // Accessors for code generation:
1053 static int member_offset() { CHECK_INIT(_member_offset); }
1054 };
1055
1056 // Interface to java.lang.invoke.LambdaForm objects
1057 // (These are a private interface for managing adapter code generation.)
1058
1059 class java_lang_invoke_LambdaForm: AllStatic {
1060 friend class JavaClasses;
1061
1062 private:
1063 static int _vmentry_offset; // type is MemberName
1064
1065 static void compute_offsets();
1066
1067 public:
1068 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1069
1070 // Accessors
1071 static oop vmentry(oop lform);
1072
1073 // Testers
1074 static bool is_subclass(Klass* klass) {
1075 return vmClasses::LambdaForm_klass() != nullptr &&
1076 klass->is_subclass_of(vmClasses::LambdaForm_klass());
1077 }
1078 static bool is_instance(oop obj);
1079
1080 // Accessors for code generation:
1081 static int vmentry_offset() { CHECK_INIT(_vmentry_offset); }
1082 };
1083
1084 // Interface to java.lang.invoke.NativeEntryPoint objects
1085 // (These are a private interface for managing adapter code generation.)
1086
1087 class jdk_internal_foreign_abi_NativeEntryPoint: AllStatic {
1088 friend class JavaClasses;
1089
1090 private:
1091 static int _method_type_offset;
1092 static int _downcall_stub_address_offset;
1093
1094 static void compute_offsets();
1095
1096 public:
1097 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1098
1099 // Accessors
1100 static oop method_type(oop entry);
1101 static jlong downcall_stub_address(oop entry);
1102
1103 // Testers
1104 static bool is_subclass(Klass* klass) {
1105 return vmClasses::NativeEntryPoint_klass() != nullptr &&
1106 klass->is_subclass_of(vmClasses::NativeEntryPoint_klass());
1107 }
1108 static bool is_instance(oop obj);
1109
1110 // Accessors for code generation:
1111 static int method_type_offset_in_bytes() { return _method_type_offset; }
1112 static int downcall_stub_address_offset_in_bytes() { return _downcall_stub_address_offset; }
1113 };
1114
1115 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic {
1116 friend class JavaClasses;
1117
1118 private:
1119 static int _inputStorage_offset;
1120 static int _outputStorage_offset;
1121 static int _volatileStorage_offset;
1122 static int _stackAlignment_offset;
1123 static int _shadowSpace_offset;
1124 static int _scratch1_offset;
1125 static int _scratch2_offset;
1126
1127 static void compute_offsets();
1128
1129 public:
1130 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1131
1132 // Accessors
1133 static objArrayOop inputStorage(oop entry);
1134 static objArrayOop outputStorage(oop entry);
1135 static objArrayOop volatileStorage(oop entry);
1136 static jint stackAlignment(oop entry);
1137 static jint shadowSpace(oop entry);
1138 static oop scratch1(oop entry);
1139 static oop scratch2(oop entry);
1140
1141 // Testers
1142 static bool is_subclass(Klass* klass) {
1143 return vmClasses::ABIDescriptor_klass() != nullptr &&
1144 klass->is_subclass_of(vmClasses::ABIDescriptor_klass());
1145 }
1146 static bool is_instance(oop obj);
1147 };
1148
1149 class jdk_internal_foreign_abi_VMStorage: AllStatic {
1150 friend class JavaClasses;
1151
1152 private:
1153 static int _type_offset;
1154 static int _indexOrOffset_offset;
1155 static int _segmentMaskOrSize_offset;
1156 static int _debugName_offset;
1157
1158 static void compute_offsets();
1159
1160 public:
1161 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1162
1163 // Accessors
1164 static jbyte type(oop entry);
1165 static jint index_or_offset(oop entry);
1166 static jshort segment_mask_or_size(oop entry);
1167 static oop debugName(oop entry);
1168
1169 // Testers
1170 static bool is_subclass(Klass* klass) {
1171 return vmClasses::VMStorage_klass() != nullptr &&
1172 klass->is_subclass_of(vmClasses::VMStorage_klass());
1173 }
1174 static bool is_instance(oop obj);
1175 };
1176
1177 class jdk_internal_foreign_abi_CallConv: AllStatic {
1178 friend class JavaClasses;
1179
1180 private:
1181 static int _argRegs_offset;
1182 static int _retRegs_offset;
1183
1184 static void compute_offsets();
1185
1186 public:
1187 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1188
1189 // Accessors
1190 static objArrayOop argRegs(oop entry);
1191 static objArrayOop retRegs(oop entry);
1192
1193 // Testers
1194 static bool is_subclass(Klass* klass) {
1195 return vmClasses::CallConv_klass() != nullptr &&
1196 klass->is_subclass_of(vmClasses::CallConv_klass());
1197 }
1198 static bool is_instance(oop obj);
1199 };
1200
1201 // Interface to java.lang.invoke.MemberName objects
1202 // (These are a private interface for Java code to query the class hierarchy.)
1203
1204 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1205 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1206
1207 class java_lang_invoke_ResolvedMethodName : AllStatic {
1208 friend class JavaClasses;
1209
1210 static int _vmtarget_offset;
1211 static int _vmholder_offset;
1212
1213 static void compute_offsets();
1214 public:
1215 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1216
1217 static int vmtarget_offset() { CHECK_INIT(_vmtarget_offset); }
1218
1219 static Method* vmtarget(oop resolved_method);
1220 static void set_vmtarget(oop resolved_method, Method* method);
1221
1222 static void set_vmholder(oop resolved_method, oop holder);
1223
1224 // find or create resolved member name
1225 static oop find_resolved_method(const methodHandle& m, TRAPS);
1226
1227 static bool is_instance(oop resolved_method);
1228 };
1229
1230
1231 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1232 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1233
1234
1235 class java_lang_invoke_MemberName: AllStatic {
1236 friend class JavaClasses;
1237
1238 private:
1239 // From java.lang.invoke.MemberName:
1240 // private Class<?> clazz; // class in which the method is defined
1241 // private String name; // may be null if not yet materialized
1242 // private Object type; // may be null if not yet materialized
1243 // private int flags; // modifier bits; see reflect.Modifier
1244 // private ResolvedMethodName method; // holds VM-specific target value
1245 // private intptr_t vmindex; // member index within class or interface
1246 static int _clazz_offset;
1247 static int _name_offset;
1248 static int _type_offset;
1249 static int _flags_offset;
1250 static int _method_offset;
1251 static int _vmindex_offset;
1252
1253 static void compute_offsets();
1254
1255 public:
1256 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1257 // Accessors
1258 static oop clazz(oop mname);
1259 static void set_clazz(oop mname, oop clazz);
1260
1261 static oop type(oop mname);
1262 static void set_type(oop mname, oop type);
1263
1264 static oop name(oop mname);
1265 static void set_name(oop mname, oop name);
1266
1267 static int flags(oop mname);
1268 static void set_flags(oop mname, int flags);
1269
1270 // Link through ResolvedMethodName field to get Method*
1271 static Method* vmtarget(oop mname);
1272 static void set_method(oop mname, oop method);
1273
1274 static intptr_t vmindex(oop mname);
1275 static void set_vmindex(oop mname, intptr_t index);
1276
1277 // Testers
1278 static bool is_subclass(Klass* klass) {
1279 return klass->is_subclass_of(vmClasses::MemberName_klass());
1280 }
1281 static bool is_instance(oop obj);
1282
1283 static bool is_method(oop obj);
1284
1285 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1286 enum {
1287 MN_IS_METHOD = 0x00010000, // method (not constructor)
1288 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1289 MN_IS_FIELD = 0x00040000, // field
1290 MN_IS_TYPE = 0x00080000, // nested type
1291 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1292 MN_TRUSTED_FINAL = 0x00200000, // trusted final field
1293 MN_HIDDEN_MEMBER = 0x00400000, // @Hidden annotation detected
1294 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1295 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1296 MN_NESTMATE_CLASS = 0x00000001,
1297 MN_HIDDEN_CLASS = 0x00000002,
1298 MN_STRONG_LOADER_LINK = 0x00000004,
1299 MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1300 // Lookup modes
1301 MN_MODULE_MODE = 0x00000010,
1302 MN_UNCONDITIONAL_MODE = 0x00000020,
1303 MN_TRUSTED_MODE = -1
1304 };
1305
1306 // Accessors for code generation:
1307 static int clazz_offset() { CHECK_INIT(_clazz_offset); }
1308 static int type_offset() { CHECK_INIT(_type_offset); }
1309 static int flags_offset() { CHECK_INIT(_flags_offset); }
1310 static int method_offset() { CHECK_INIT(_method_offset); }
1311 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1312 };
1313
1314
1315 // Interface to java.lang.invoke.MethodType objects
1316
1317 class java_lang_invoke_MethodType: AllStatic {
1318 friend class JavaClasses;
1319
1320 private:
1321 static int _rtype_offset;
1322 static int _ptypes_offset;
1323
1324 static void compute_offsets();
1325
1326 public:
1327 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1328 // Accessors
1329 static oop rtype(oop mt);
1330 static objArrayOop ptypes(oop mt);
1331
1332 static oop ptype(oop mt, int index);
1333 static int ptype_count(oop mt);
1334
1335 static int ptype_slot_count(oop mt); // extra counts for long/double
1336 static int rtype_slot_count(oop mt); // extra counts for long/double
1337
1338 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1339 static void print_signature(oop mt, outputStream* st);
1340
1341 static bool is_instance(oop obj);
1342
1343 static bool equals(oop mt1, oop mt2);
1344
1345 // Accessors for code generation:
1346 static int rtype_offset() { CHECK_INIT(_rtype_offset); }
1347 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); }
1348 };
1349
1350
1351 // Interface to java.lang.invoke.CallSite objects
1352
1353 class java_lang_invoke_CallSite: AllStatic {
1354 friend class JavaClasses;
1355
1356 private:
1357 static int _target_offset;
1358 static int _context_offset;
1359
1360 static void compute_offsets();
1361
1362 public:
1363 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1364 // Accessors
1365 static oop target( oop site);
1366 static void set_target( oop site, oop target);
1367 static void set_target_volatile( oop site, oop target);
1368
1369 static oop context_no_keepalive(oop site);
1370
1371 // Testers
1372 static bool is_subclass(Klass* klass) {
1373 return klass->is_subclass_of(vmClasses::CallSite_klass());
1374 }
1375 static bool is_instance(oop obj);
1376
1377 // Accessors for code generation:
1378 static int target_offset() { CHECK_INIT(_target_offset); }
1379 static int context_offset() { CHECK_INIT(_context_offset); }
1380 };
1381
1382 // Interface to java.lang.invoke.ConstantCallSite objects
1383
1384 class java_lang_invoke_ConstantCallSite: AllStatic {
1385 friend class JavaClasses;
1386
1387 private:
1388 static int _is_frozen_offset;
1389
1390 static void compute_offsets();
1391
1392 public:
1393 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1394 // Accessors
1395 static jboolean is_frozen(oop site);
1396
1397 // Testers
1398 static bool is_subclass(Klass* klass) {
1399 return klass->is_subclass_of(vmClasses::ConstantCallSite_klass());
1400 }
1401 static bool is_instance(oop obj);
1402 };
1403
1404 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1405
1406 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1407 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1408 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1409
1410 class DependencyContext;
1411
1412 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1413 friend class JavaClasses;
1414
1415 private:
1416 static int _vmdependencies_offset;
1417 static int _last_cleanup_offset;
1418
1419 static void compute_offsets();
1420
1421 public:
1422 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1423 // Accessors
1424 static DependencyContext vmdependencies(oop context);
1425
1426 // Testers
1427 static bool is_subclass(Klass* klass) {
1428 return klass->is_subclass_of(vmClasses::Context_klass());
1429 }
1430 static bool is_instance(oop obj);
1431 };
1432
1433 // Interface to java.security.AccessControlContext objects
1434
1435 class java_security_AccessControlContext: AllStatic {
1436 private:
1437 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1438 // so we compute the offsets at startup rather than hard-wiring them.
1439 static int _context_offset;
1440 static int _privilegedContext_offset;
1441 static int _isPrivileged_offset;
1442 static int _isAuthorized_offset;
1443
1444 static void compute_offsets();
1445 public:
1446 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1447 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1448
1449 // Debugging/initialization
1450 friend class JavaClasses;
1451 };
1452
1453
1454 // Interface to java.lang.ClassLoader objects
1455
1456 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1457 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1458
1459 class java_lang_ClassLoader : AllStatic {
1460 private:
1461 static int _loader_data_offset;
1462 static int _parent_offset;
1463 static int _parallelCapable_offset;
1464 static int _name_offset;
1465 static int _nameAndId_offset;
1466 static int _unnamedModule_offset;
1467
1468 static void compute_offsets();
1469
1470 public:
1471 // Support for CDS
1472 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1473 static int loader_data_offset() { return _loader_data_offset; }
1474
1475 static ClassLoaderData* loader_data_acquire(oop loader);
1476 static ClassLoaderData* loader_data(oop loader);
1477 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1478
1479 static oop parent(oop loader);
1480 static oop parent_no_keepalive(oop loader);
1481 static oop name(oop loader);
1482 static oop nameAndId(oop loader);
1483 static bool isAncestor(oop loader, oop cl);
1484
1485 // Support for parallelCapable field
1486 static bool parallelCapable(oop the_class_mirror);
1487
1488 static bool is_trusted_loader(oop loader);
1489
1490 // Return true if this is one of the class loaders associated with
1491 // the generated bytecodes for serialization constructor returned
1492 // by sun.reflect.ReflectionFactory::newConstructorForSerialization
1493 static bool is_reflection_class_loader(oop loader);
1494
1495 // Fix for 4474172
1496 static oop non_reflection_class_loader(oop loader);
1497
1498 // Testers
1499 static bool is_subclass(Klass* klass) {
1500 return klass->is_subclass_of(vmClasses::ClassLoader_klass());
1501 }
1502 static bool is_instance(oop obj);
1503
1504 static oop unnamedModule(oop loader);
1505
1506 // Debugging
1507 friend class JavaClasses;
1508 };
1509
1510
1511 // Interface to java.lang.System objects
1512
1513 class java_lang_System : AllStatic {
1514 private:
1515 static int _static_in_offset;
1516 static int _static_out_offset;
1517 static int _static_err_offset;
1518 static int _static_security_offset;
1519 static int _static_allow_security_offset;
1520 static int _static_never_offset;
1521
1522 public:
1523 static int in_offset() { CHECK_INIT(_static_in_offset); }
1524 static int out_offset() { CHECK_INIT(_static_out_offset); }
1525 static int err_offset() { CHECK_INIT(_static_err_offset); }
1526 static bool allow_security_manager();
1527 static bool has_security_manager();
1528
1529 static void compute_offsets();
1530 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1531
1532 // Debugging
1533 friend class JavaClasses;
1534 };
1535
1536
1537 // Interface to java.lang.StackTraceElement objects
1538
1539 class java_lang_StackTraceElement: AllStatic {
1540 private:
1541 static int _declaringClassObject_offset;
1542 static int _classLoaderName_offset;
1543 static int _moduleName_offset;
1544 static int _moduleVersion_offset;
1545 static int _declaringClass_offset;
1546 static int _methodName_offset;
1547 static int _fileName_offset;
1548 static int _lineNumber_offset;
1549
1550 // Setters
1551 static void set_classLoaderName(oop element, oop value);
1552 static void set_moduleName(oop element, oop value);
1553 static void set_moduleVersion(oop element, oop value);
1554 static void set_declaringClass(oop element, oop value);
1555 static void set_methodName(oop element, oop value);
1556 static void set_fileName(oop element, oop value);
1557 static void set_lineNumber(oop element, int value);
1558 static void set_declaringClassObject(oop element, oop value);
1559
1560 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1561 const methodHandle& method, int bci,
1562 Symbol*& source, oop& source_file, int& line_number, TRAPS);
1563
1564 public:
1565 // Create an instance of StackTraceElement
1566 static oop create(const methodHandle& method, int bci, TRAPS);
1567
1568 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1569 int version, int bci, Symbol* name, TRAPS);
1570
1571 static void compute_offsets();
1572 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1573
1574 #if INCLUDE_JVMCI
1575 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1576 #endif
1577
1578 // Debugging
1579 friend class JavaClasses;
1580 };
1581
1582
1583 class Backtrace: AllStatic {
1584 public:
1585 // Helper backtrace functions to store bci|version together.
1586 static int merge_bci_and_version(int bci, int version);
1587 static int merge_mid_and_cpref(int mid, int cpref);
1588 static int bci_at(unsigned int merged);
1589 static int version_at(unsigned int merged);
1590 static int mid_at(unsigned int merged);
1591 static int cpref_at(unsigned int merged);
1592 static int get_line_number(Method* method, int bci);
1593 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1594
1595 // Debugging
1596 friend class JavaClasses;
1597 };
1598
1599 class java_lang_ClassFrameInfo: AllStatic {
1600 private:
1601 static int _classOrMemberName_offset;
1602 static int _flags_offset;
1603
1604 public:
1605 static oop classOrMemberName(oop info);
1606 static int flags(oop info);
1607
1608 // Setters
1609 static void init_class(Handle stackFrame, const methodHandle& m);
1610 static void init_method(Handle stackFrame, const methodHandle& m, TRAPS);
1611
1612 static void compute_offsets();
1613 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1614
1615 // Debugging
1616 friend class JavaClasses;
1617 };
1618
1619 // Interface to java.lang.StackFrameInfo objects
1620
1621 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1622 macro(java_lang_StackFrameInfo, version, short_signature, false)
1623
1624 class java_lang_StackFrameInfo: AllStatic {
1625 private:
1626 static int _type_offset;
1627 static int _name_offset;
1628 static int _bci_offset;
1629 static int _version_offset;
1630 static int _contScope_offset;
1631
1632 public:
1633 // Getters
1634 static oop name(oop info);
1635 static oop type(oop info);
1636 static Method* get_method(oop info);
1637
1638 // Setters
1639 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS);
1640 static void set_name(oop info, oop value);
1641 static void set_type(oop info, oop value);
1642 static void set_bci(oop info, int value);
1643
1644 static void set_version(oop info, short value);
1645 static void set_contScope(oop info, oop value);
1646
1647 static void compute_offsets();
1648 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1649
1650 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1651
1652 // Debugging
1653 friend class JavaClasses;
1654 };
1655
1656 class java_lang_LiveStackFrameInfo: AllStatic {
1657 private:
1658 static int _monitors_offset;
1659 static int _locals_offset;
1660 static int _operands_offset;
1661 static int _mode_offset;
1662
1663 public:
1664 static void set_monitors(oop info, oop value);
1665 static void set_locals(oop info, oop value);
1666 static void set_operands(oop info, oop value);
1667 static void set_mode(oop info, int value);
1668
1669 static void compute_offsets();
1670 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1671
1672 // Debugging
1673 friend class JavaClasses;
1674 };
1675
1676 // Interface to java.lang.reflect.RecordComponent objects
1677
1678 class java_lang_reflect_RecordComponent: AllStatic {
1679 private:
1680 static int _clazz_offset;
1681 static int _name_offset;
1682 static int _type_offset;
1683 static int _accessor_offset;
1684 static int _signature_offset;
1685 static int _annotations_offset;
1686 static int _typeAnnotations_offset;
1687
1688 // Setters
1689 static void set_clazz(oop element, oop value);
1690 static void set_name(oop element, oop value);
1691 static void set_type(oop element, oop value);
1692 static void set_accessor(oop element, oop value);
1693 static void set_signature(oop element, oop value);
1694 static void set_annotations(oop element, oop value);
1695 static void set_typeAnnotations(oop element, oop value);
1696
1697 public:
1698 // Create an instance of RecordComponent
1699 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1700
1701 static void compute_offsets();
1702 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1703
1704 // Debugging
1705 friend class JavaClasses;
1706 };
1707
1708
1709 // Interface to java.lang.AssertionStatusDirectives objects
1710
1711 class java_lang_AssertionStatusDirectives: AllStatic {
1712 private:
1713 static int _classes_offset;
1714 static int _classEnabled_offset;
1715 static int _packages_offset;
1716 static int _packageEnabled_offset;
1717 static int _deflt_offset;
1718
1719 public:
1720 // Setters
1721 static void set_classes(oop obj, oop val);
1722 static void set_classEnabled(oop obj, oop val);
1723 static void set_packages(oop obj, oop val);
1724 static void set_packageEnabled(oop obj, oop val);
1725 static void set_deflt(oop obj, bool val);
1726
1727 static void compute_offsets();
1728 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1729
1730 // Debugging
1731 friend class JavaClasses;
1732 };
1733
1734
1735 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1736 private:
1737 static int _owner_offset;
1738 public:
1739 static void compute_offsets();
1740 static oop get_owner_threadObj(oop obj);
1741 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1742 };
1743
1744 // Interface to jdk.internal.misc.UnsafeConsants
1745
1746 class jdk_internal_misc_UnsafeConstants : AllStatic {
1747 public:
1748 static void set_unsafe_constants();
1749 static void compute_offsets() { }
1750 static void serialize_offsets(SerializeClosure* f) { }
1751 };
1752
1753 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects
1754
1755 class vector_VectorPayload : AllStatic {
1756 private:
1757 static int _payload_offset;
1758 public:
1759 static void set_payload(oop o, oop val);
1760
1761 static void compute_offsets();
1762 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1763
1764 // Testers
1765 static bool is_subclass(Klass* klass) {
1766 return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass());
1767 }
1768 static bool is_instance(oop obj);
1769 };
1770
1771 class java_lang_Integer : AllStatic {
1772 public:
1773 static jint value(oop obj);
1774 };
1775
1776 class java_lang_Long : AllStatic {
1777 public:
1778 static jlong value(oop obj);
1779 };
1780
1781 class java_lang_Character : AllStatic {
1782 public:
1783 static jchar value(oop obj);
1784 };
1785
1786 class java_lang_Short : AllStatic {
1787 public:
1788 static jshort value(oop obj);
1789 };
1790
1791 class java_lang_Byte : AllStatic {
1792 public:
1793 static jbyte value(oop obj);
1794 };
1795
1796 class java_lang_Boolean : AllStatic {
1797 private:
1798 static int _static_TRUE_offset;
1799 static int _static_FALSE_offset;
1800 public:
1801 static Symbol* symbol();
1802 static void compute_offsets(InstanceKlass* k);
1803 static oop get_TRUE(InstanceKlass *k);
1804 static oop get_FALSE(InstanceKlass *k);
1805 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1806 static jboolean value(oop obj);
1807 };
1808
1809 class java_lang_Integer_IntegerCache : AllStatic {
1810 private:
1811 static int _static_cache_offset;
1812 public:
1813 static Symbol* symbol();
1814 static void compute_offsets(InstanceKlass* k);
1815 static objArrayOop cache(InstanceKlass *k);
1816 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1817 };
1818
1819 class java_lang_Long_LongCache : AllStatic {
1820 private:
1821 static int _static_cache_offset;
1822 public:
1823 static Symbol* symbol();
1824 static void compute_offsets(InstanceKlass* k);
1825 static objArrayOop cache(InstanceKlass *k);
1826 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1827 };
1828
1829 class java_lang_Character_CharacterCache : AllStatic {
1830 private:
1831 static int _static_cache_offset;
1832 public:
1833 static Symbol* symbol();
1834 static void compute_offsets(InstanceKlass* k);
1835 static objArrayOop cache(InstanceKlass *k);
1836 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1837 };
1838
1839 class java_lang_Short_ShortCache : AllStatic {
1840 private:
1841 static int _static_cache_offset;
1842 public:
1843 static Symbol* symbol();
1844 static void compute_offsets(InstanceKlass* k);
1845 static objArrayOop cache(InstanceKlass *k);
1846 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1847 };
1848
1849 class java_lang_Byte_ByteCache : AllStatic {
1850 private:
1851 static int _static_cache_offset;
1852 public:
1853 static Symbol* symbol();
1854 static void compute_offsets(InstanceKlass* k);
1855 static objArrayOop cache(InstanceKlass *k);
1856 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1857 };
1858
1859
1860 // Interface to java.lang.InternalError objects
1861
1862 #define INTERNALERROR_INJECTED_FIELDS(macro) \
1863 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1864
1865 class java_lang_InternalError : AllStatic {
1866 private:
1867 static int _during_unsafe_access_offset;
1868 public:
1869 static jboolean during_unsafe_access(oop internal_error);
1870 static void set_during_unsafe_access(oop internal_error);
1871 static void compute_offsets();
1872 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1873 };
1874
1875 // Use to declare fields that need to be injected into Java classes
1876 // for the JVM to use. The name_index and signature_index are
1877 // declared in vmSymbols. The may_be_java flag is used to declare
1878 // fields that might already exist in Java but should be injected if
1879 // they don't. Otherwise the field is unconditionally injected and
1880 // the JVM uses the injected one. This is to ensure that name
1881 // collisions don't occur. In general may_be_java should be false
1882 // unless there's a good reason.
1883
1884 class InjectedField {
1885 public:
1886 const vmClassID klass_id;
1887 const vmSymbolID name_index;
1888 const vmSymbolID signature_index;
1889 const bool may_be_java;
1890
1891
1892 Klass* klass() const { return vmClasses::klass_at(klass_id); }
1893 Symbol* name() const { return lookup_symbol(name_index); }
1894 Symbol* signature() const { return lookup_symbol(signature_index); }
1895
1896 int compute_offset();
1897
1898 // Find the Symbol for this index
1899 static Symbol* lookup_symbol(vmSymbolID symbol_index) {
1900 return Symbol::vm_symbol_at(symbol_index);
1901 }
1902 };
1903
1904
1905 // Interface to hard-coded offset checking
1906
1907 enum class InjectedFieldID : int;
1908
1909 class JavaClasses : AllStatic {
1910 private:
1911
1912 static InjectedField _injected_fields[];
1913
1914 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1915 public:
1916
1917 static int compute_injected_offset(InjectedFieldID id);
1918
1919 static void compute_offsets();
1920 static void check_offsets() PRODUCT_RETURN;
1921 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1922 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1923 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1924
1925 static void compute_offset(int &dest_offset,
1926 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
1927 bool is_static = false);
1928 static void compute_offset(int& dest_offset, InstanceKlass* ik,
1929 const char* name_string, Symbol* signature_symbol,
1930 bool is_static = false);
1931 };
1932
1933 #undef CHECK_INIT
1934
1935 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP