1 /*
2 * Copyright (c) 1997, 2024, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_CLASSFILE_JAVACLASSES_HPP
27
28 #include "classfile/vmClasses.hpp"
29 #include "oops/instanceKlass.hpp"
30 #include "oops/oopsHierarchy.hpp"
31 #include "oops/symbol.hpp"
32 #include "runtime/handles.hpp"
33 #include "runtime/os.hpp"
34 #include "utilities/macros.hpp"
35 #include "utilities/vmEnums.hpp"
36
37 class JvmtiThreadState;
38 class RecordComponent;
39 class SerializeClosure;
40
41 #define CHECK_INIT(offset) assert(offset != 0, "should be initialized"); return offset;
42
43 // Interface to java.lang.Object objects
44
45 class java_lang_Object : AllStatic {
46 public:
47 static void register_natives(TRAPS);
48 };
49
50 // Interface to java.lang.String objects
51
52 // The flags field is a collection of bits representing boolean values used
53 // internally by the VM.
54 #define STRING_INJECTED_FIELDS(macro) \
55 macro(java_lang_String, flags, byte_signature, false)
56
57 class java_lang_String : AllStatic {
58 private:
59 static int _value_offset;
60 static int _hash_offset;
61 static int _hashIsZero_offset;
62 static int _coder_offset;
63 static int _flags_offset;
64
65 static bool _initialized;
66
67 static Handle basic_create(int length, bool byte_arr, TRAPS);
68
69 static inline void set_coder(oop string, jbyte coder);
70
71 // Bitmasks for values in the injected flags field.
72 static const uint8_t _deduplication_forbidden_mask = 1 << 0;
73 static const uint8_t _deduplication_requested_mask = 1 << 1;
74
75 static int flags_offset() { CHECK_INIT(_flags_offset); }
76 // Return the address of the injected flags field.
77 static inline uint8_t* flags_addr(oop java_string);
78 // Test whether the designated bit of the injected flags field is set.
79 static inline bool is_flag_set(oop java_string, uint8_t flag_mask);
80 // Atomically test and set the designated bit of the injected flags field,
81 // returning true if the bit was already set.
82 static bool test_and_set_flag(oop java_string, uint8_t flag_mask);
83
84 static inline unsigned int hash_code_impl(oop java_string, bool update);
85
86 public:
87
88 // Coders
89 enum Coder {
90 CODER_LATIN1 = 0,
91 CODER_UTF16 = 1
92 };
93
94 static void compute_offsets();
95 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
96
97 // Instance creation
98 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
99 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
100 static Handle create_from_str(const char* utf8_str, TRAPS);
101 static oop create_oop_from_str(const char* utf8_str, TRAPS);
102 static Handle create_from_symbol(Symbol* symbol, TRAPS);
103 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
104
105 static void set_compact_strings(bool value);
106
107 static int value_offset() { CHECK_INIT(_value_offset); }
108 static int coder_offset() { CHECK_INIT(_coder_offset); }
109
110 static inline void set_value(oop string, typeArrayOop buffer);
111
112 // Set the deduplication_forbidden flag true. This flag is sticky; once
113 // set it never gets cleared. This is set when a String is interned in
114 // the StringTable, to prevent string deduplication from changing the
115 // String's value array.
116 static inline void set_deduplication_forbidden(oop java_string);
117
118 // Test and set the deduplication_requested flag. Returns the old value
119 // of the flag. This flag is sticky; once set it never gets cleared.
120 // Some GCs may use this flag when deciding whether to request
121 // deduplication of a String, to avoid multiple requests for the same
122 // object.
123 static inline bool test_and_set_deduplication_requested(oop java_string);
124
125 // Accessors
126 static inline typeArrayOop value(oop java_string);
127 static inline typeArrayOop value_no_keepalive(oop java_string);
128 static inline bool hash_is_set(oop string);
129 static inline bool is_latin1(oop java_string);
130 static inline bool deduplication_forbidden(oop java_string);
131 static inline bool deduplication_requested(oop java_string);
132 static inline int length(oop java_string);
133 static inline int length(oop java_string, typeArrayOop string_value);
134 static size_t utf8_length(oop java_string);
135 static size_t utf8_length(oop java_string, typeArrayOop string_value);
136 // Legacy variants that truncate the length if needed
137 static int utf8_length_as_int(oop java_string);
138 static int utf8_length_as_int(oop java_string, typeArrayOop string_value);
139
140 // String converters
141 static char* as_utf8_string(oop java_string);
142 // `length` is set to the length of the utf8 sequence.
143 static char* as_utf8_string(oop java_string, size_t& length);
144 static char* as_utf8_string_full(oop java_string, char* buf, size_t buflen, size_t& length);
145 static char* as_utf8_string(oop java_string, char* buf, size_t buflen);
146 static char* as_utf8_string(oop java_string, int start, int len);
147 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, size_t buflen);
148 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, size_t buflen);
149 static char* as_platform_dependent_str(Handle java_string, TRAPS);
150 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
151 static jchar* as_unicode_string_or_null(oop java_string, int& length);
152 // produce an ascii string with all other values quoted using \u####
153 static char* as_quoted_ascii(oop java_string);
154
155 // Compute the hash value for a java.lang.String object which would
156 // contain the characters passed in.
157 //
158 // As the hash value used by the String object itself, in
159 // String.hashCode(). This value is normally calculated in Java code
160 // in the String.hashCode method(), but is precomputed for String
161 // objects in the shared archive file.
162 // hash P(31) from Kernighan & Ritchie
163 //
164 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
165 static unsigned int hash_code(const jchar* s, int len) {
166 unsigned int h = 0;
167 while (len-- > 0) {
168 h = 31*h + (unsigned int) *s;
169 s++;
170 }
171 return h;
172 }
173
174 static unsigned int hash_code(const jbyte* s, int len) {
175 unsigned int h = 0;
176 while (len-- > 0) {
177 h = 31*h + (((unsigned int) *s) & 0xFF);
178 s++;
179 }
180 return h;
181 }
182
183 static unsigned int hash_code(oop java_string);
184 static unsigned int hash_code_noupdate(oop java_string);
185
186 static bool equals(oop java_string, const jchar* chars, int len);
187 static bool equals(oop str1, oop str2);
188 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
189
190 // Conversion between '.' and '/' formats, and allocate a String from the result.
191 static Handle externalize_classname(Symbol* java_name, TRAPS);
192
193 // Conversion
194 static Symbol* as_symbol(oop java_string);
195 static Symbol* as_symbol_or_null(oop java_string);
196
197 // Tester
198 static inline bool is_instance(oop obj);
199
200 // Debugging
201 static void print(oop java_string, outputStream* st, int max_length = MaxStringPrintSize);
202 friend class JavaClasses;
203 friend class StringTable;
204 };
205
206
207 // Interface to java.lang.Class objects
208
209 #define CLASS_INJECTED_FIELDS(macro) \
210 macro(java_lang_Class, klass, intptr_signature, false) \
211 macro(java_lang_Class, array_klass, intptr_signature, false) \
212 macro(java_lang_Class, oop_size, int_signature, false) \
213 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
214 macro(java_lang_Class, protection_domain, object_signature, false) \
215 macro(java_lang_Class, source_file, object_signature, false) \
216 macro(java_lang_Class, init_lock, object_signature, false)
217
218 class java_lang_Class : AllStatic {
219 friend class VMStructs;
220 friend class JVMCIVMStructs;
221
222 private:
223
224 // The fake offsets are added by the class loader when java.lang.Class is loaded
225
226 static int _klass_offset;
227 static int _array_klass_offset;
228
229 static int _oop_size_offset;
230 static int _static_oop_field_count_offset;
231
232 static int _protection_domain_offset;
233 static int _init_lock_offset;
234 static int _signers_offset;
235 static int _class_loader_offset;
236 static int _module_offset;
237 static int _component_mirror_offset;
238
239 static int _name_offset;
240 static int _source_file_offset;
241 static int _classData_offset;
242 static int _classRedefinedCount_offset;
243
244 static bool _offsets_computed;
245
246 static GrowableArray<Klass*>* _fixup_mirror_list;
247 static GrowableArray<Klass*>* _fixup_module_field_list;
248
249 static void set_init_lock(oop java_class, oop init_lock);
250 static void set_protection_domain(oop java_class, oop protection_domain);
251 static void set_class_loader(oop java_class, oop class_loader);
252 static void set_component_mirror(oop java_class, oop comp_mirror);
253
254 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
255 Handle classData, TRAPS);
256 static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
257 public:
258 static void allocate_fixup_lists();
259 static void compute_offsets();
260
261 // Instance creation
262 static void allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
263 Handle& mirror, Handle& comp_mirror, TRAPS); // returns mirror and comp_mirror
264 static void create_mirror(Klass* k, Handle class_loader, Handle module,
265 Handle protection_domain, Handle classData, TRAPS);
266 static void fixup_mirror(Klass* k, TRAPS);
267 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
268
269 // Archiving
270 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
271 static void create_scratch_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
272 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
273 Handle protection_domain,
274 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
275
276 static void fixup_module_field(Klass* k, Handle module);
277
278 // Conversion
279 static Klass* as_Klass(oop java_class);
280 static void set_klass(oop java_class, Klass* klass);
281 static BasicType as_BasicType(oop java_class, Klass** reference_klass = nullptr);
282 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
283 static void print_signature(oop java_class, outputStream *st);
284 static const char* as_external_name(oop java_class);
285 // Testing
286 static bool is_instance(oop obj);
287
288 static bool is_primitive(oop java_class);
289 static BasicType primitive_type(oop java_class);
290 static oop primitive_mirror(BasicType t);
291 // JVM_NewArray support
292 static Klass* array_klass_acquire(oop java_class);
293 static void release_set_array_klass(oop java_class, Klass* klass);
294 // compiler support for class operations
295 static int klass_offset() { CHECK_INIT(_klass_offset); }
296 static int array_klass_offset() { CHECK_INIT(_array_klass_offset); }
297 static int component_mirror_offset() { CHECK_INIT(_component_mirror_offset); }
298
299 // Support for classRedefinedCount field
300 static int classRedefinedCount(oop the_class_mirror);
301 static void set_classRedefinedCount(oop the_class_mirror, int value);
302
303 // Support for embedded per-class oops
304 static oop protection_domain(oop java_class);
305 static oop init_lock(oop java_class);
306 static void clear_init_lock(oop java_class) {
307 set_init_lock(java_class, nullptr);
308 }
309 static oop component_mirror(oop java_class);
310 static objArrayOop signers(oop java_class);
311 static oop class_data(oop java_class);
312 static void set_class_data(oop java_class, oop classData);
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 // Printing
640 static void print(oop throwable, outputStream* st);
641 static void print_stack_trace(Handle throwable, outputStream* st);
642 static void java_printStackTrace(Handle throwable, TRAPS);
643 // Debugging
644 friend class JavaClasses;
645 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
646 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
647 };
648
649
650 // Interface to java.lang.reflect.AccessibleObject objects
651
652 class java_lang_reflect_AccessibleObject: AllStatic {
653 private:
654 // Note that to reduce dependencies on the JDK we compute these
655 // offsets at run-time.
656 static int _override_offset;
657
658 static void compute_offsets();
659
660 public:
661 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
662
663 // Accessors
664 static jboolean override(oop reflect);
665 static void set_override(oop reflect, jboolean value);
666
667 // Debugging
668 friend class JavaClasses;
669 };
670
671
672 // Interface to java.lang.reflect.Method objects
673
674 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
675 private:
676 // Note that to reduce dependencies on the JDK we compute these
677 // offsets at run-time.
678 static int _clazz_offset;
679 static int _name_offset;
680 static int _returnType_offset;
681 static int _parameterTypes_offset;
682 static int _exceptionTypes_offset;
683 static int _slot_offset;
684 static int _modifiers_offset;
685 static int _signature_offset;
686 static int _annotations_offset;
687 static int _parameter_annotations_offset;
688 static int _annotation_default_offset;
689
690 static void compute_offsets();
691 public:
692 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
693
694 // Allocation
695 static Handle create(TRAPS);
696
697 // Accessors
698 static oop clazz(oop reflect);
699 static void set_clazz(oop reflect, oop value);
700
701 static void set_name(oop method, oop value);
702
703 static oop return_type(oop method);
704 static void set_return_type(oop method, oop value);
705
706 static oop parameter_types(oop method);
707 static void set_parameter_types(oop method, oop value);
708
709 static int slot(oop reflect);
710 static void set_slot(oop reflect, int value);
711
712 static void set_exception_types(oop method, oop value);
713 static void set_modifiers(oop method, int value);
714 static void set_signature(oop method, oop value);
715 static void set_annotations(oop method, oop value);
716 static void set_parameter_annotations(oop method, oop value);
717 static void set_annotation_default(oop method, oop value);
718
719 // Debugging
720 friend class JavaClasses;
721 };
722
723
724 // Interface to java.lang.reflect.Constructor objects
725
726 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
727 private:
728 // Note that to reduce dependencies on the JDK we compute these
729 // offsets at run-time.
730 static int _clazz_offset;
731 static int _parameterTypes_offset;
732 static int _exceptionTypes_offset;
733 static int _slot_offset;
734 static int _modifiers_offset;
735 static int _signature_offset;
736 static int _annotations_offset;
737 static int _parameter_annotations_offset;
738
739 static void compute_offsets();
740 public:
741 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
742
743 // Allocation
744 static Handle create(TRAPS);
745
746 // Accessors
747 static oop clazz(oop reflect);
748 static void set_clazz(oop reflect, oop value);
749
750 static oop parameter_types(oop constructor);
751 static void set_parameter_types(oop constructor, oop value);
752
753 static int slot(oop reflect);
754 static void set_slot(oop reflect, int value);
755
756 static void set_exception_types(oop constructor, oop value);
757 static void set_modifiers(oop constructor, int value);
758 static void set_signature(oop constructor, oop value);
759 static void set_annotations(oop constructor, oop value);
760 static void set_parameter_annotations(oop method, oop value);
761
762 // Debugging
763 friend class JavaClasses;
764 };
765
766
767 // Interface to java.lang.reflect.Field objects
768
769 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
770 private:
771 // Note that to reduce dependencies on the JDK we compute these
772 // offsets at run-time.
773 static int _clazz_offset;
774 static int _name_offset;
775 static int _type_offset;
776 static int _slot_offset;
777 static int _modifiers_offset;
778 static int _flags_offset;
779 static int _signature_offset;
780 static int _annotations_offset;
781
782 static void compute_offsets();
783
784 public:
785 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
786
787 // Allocation
788 static Handle create(TRAPS);
789
790 // Accessors
791 static oop clazz(oop reflect);
792 static void set_clazz(oop reflect, oop value);
793
794 static oop name(oop field);
795 static void set_name(oop field, oop value);
796
797 static oop type(oop field);
798 static void set_type(oop field, oop value);
799
800 static int slot(oop reflect);
801 static void set_slot(oop reflect, int value);
802
803 static int modifiers(oop field);
804 static void set_modifiers(oop field, int value);
805
806 static void set_flags(oop field, int value);
807
808 static void set_signature(oop constructor, oop value);
809 static void set_annotations(oop constructor, oop value);
810
811 // Debugging
812 friend class JavaClasses;
813 };
814
815 class java_lang_reflect_Parameter {
816 private:
817 // Note that to reduce dependencies on the JDK we compute these
818 // offsets at run-time.
819 static int _name_offset;
820 static int _modifiers_offset;
821 static int _index_offset;
822 static int _executable_offset;
823
824 static void compute_offsets();
825
826 public:
827 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
828
829 // Allocation
830 static Handle create(TRAPS);
831
832 // Accessors
833 static oop name(oop field);
834 static void set_name(oop field, oop value);
835
836 static int index(oop reflect);
837 static void set_index(oop reflect, int value);
838
839 static int modifiers(oop reflect);
840 static void set_modifiers(oop reflect, int value);
841
842 static oop executable(oop constructor);
843 static void set_executable(oop constructor, oop value);
844
845 friend class JavaClasses;
846 };
847
848 #define MODULE_INJECTED_FIELDS(macro) \
849 macro(java_lang_Module, module_entry, intptr_signature, false)
850
851 class java_lang_Module {
852 private:
853 static int _loader_offset;
854 static int _name_offset;
855 static int _module_entry_offset;
856
857 static void compute_offsets();
858
859 public:
860 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
861
862 // Allocation
863 static Handle create(Handle loader, Handle module_name, TRAPS);
864
865 // Testers
866 static bool is_instance(oop obj);
867
868 // Accessors
869 static oop loader(oop module);
870 static void set_loader(oop module, oop value);
871
872 // CDS
873 static int module_entry_offset() { return _module_entry_offset; }
874
875 static oop name(oop module);
876 static void set_name(oop module, oop value);
877
878 static ModuleEntry* module_entry(oop module);
879 static ModuleEntry* module_entry_raw(oop module);
880 static void set_module_entry(oop module, ModuleEntry* module_entry);
881
882 friend class JavaClasses;
883 };
884
885 // Interface to jdk.internal.reflect.ConstantPool objects
886 class reflect_ConstantPool {
887 private:
888 // Note that to reduce dependencies on the JDK we compute these
889 // offsets at run-time.
890 static int _oop_offset;
891
892 static void compute_offsets();
893
894 public:
895 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
896
897 // Allocation
898 static Handle create(TRAPS);
899
900 // Accessors
901 static void set_cp(oop reflect, ConstantPool* value);
902 static int oop_offset() { CHECK_INIT(_oop_offset); }
903
904 static ConstantPool* get_cp(oop reflect);
905
906 // Debugging
907 friend class JavaClasses;
908 };
909
910
911 // Interface to java.lang primitive type boxing objects:
912 // - java.lang.Boolean
913 // - java.lang.Character
914 // - java.lang.Float
915 // - java.lang.Double
916 // - java.lang.Byte
917 // - java.lang.Short
918 // - java.lang.Integer
919 // - java.lang.Long
920
921 // This could be separated out into 8 individual classes.
922
923 class java_lang_boxing_object: AllStatic {
924 private:
925 static int _value_offset;
926 static int _long_value_offset;
927
928 static void compute_offsets();
929 static oop initialize_and_allocate(BasicType type, TRAPS);
930 public:
931 // Allocation. Returns a boxed value, or null for invalid type.
932 static oop create(BasicType type, jvalue* value, TRAPS);
933 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
934 static BasicType get_value(oop box, jvalue* value);
935 static BasicType set_value(oop box, jvalue* value);
936 static BasicType basic_type(oop box);
937 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
938 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
939 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
940 static void print(BasicType type, jvalue* value, outputStream* st);
941
942 static int value_offset(BasicType type) {
943 return is_double_word_type(type) ? _long_value_offset : _value_offset;
944 }
945
946 static void serialize_offsets(SerializeClosure* f);
947
948 // Debugging
949 friend class JavaClasses;
950 };
951
952
953
954 // Interface to java.lang.ref.Reference objects
955
956 class java_lang_ref_Reference: AllStatic {
957 static int _referent_offset;
958 static int _queue_offset;
959 static int _next_offset;
960 static int _discovered_offset;
961
962 static bool _offsets_initialized;
963
964 public:
965 // Accessors
966 static inline oop weak_referent_no_keepalive(oop ref);
967 static inline oop weak_referent(oop ref);
968 static inline oop phantom_referent_no_keepalive(oop ref);
969 static inline oop unknown_referent_no_keepalive(oop ref);
970 static inline void clear_referent(oop ref);
971 static inline void clear_referent_raw(oop ref);
972 static inline HeapWord* referent_addr_raw(oop ref);
973 static inline oop next(oop ref);
974 static inline void set_next(oop ref, oop value);
975 static inline void set_next_raw(oop ref, oop value);
976 static inline HeapWord* next_addr_raw(oop ref);
977 static inline oop discovered(oop ref);
978 static inline void set_discovered(oop ref, oop value);
979 static inline void set_discovered_raw(oop ref, oop value);
980 static inline HeapWord* discovered_addr_raw(oop ref);
981 static bool is_referent_field(oop obj, ptrdiff_t offset);
982 static inline bool is_final(oop ref);
983 static inline bool is_phantom(oop ref);
984 static inline bool is_weak(oop ref);
985 static inline bool is_soft(oop ref);
986
987 static int referent_offset() { CHECK_INIT(_referent_offset); }
988 static int queue_offset() { CHECK_INIT(_queue_offset); }
989 static int next_offset() { CHECK_INIT(_next_offset); }
990 static int discovered_offset() { CHECK_INIT(_discovered_offset); }
991
992 static void compute_offsets();
993 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
994 };
995
996
997 // Interface to java.lang.ref.SoftReference objects
998
999 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
1000 static int _timestamp_offset;
1001 static int _static_clock_offset;
1002
1003 public:
1004 // Accessors
1005 static jlong timestamp(oop ref);
1006
1007 // Accessors for statics
1008 static jlong clock();
1009 static void set_clock(jlong value);
1010
1011 static void compute_offsets();
1012 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1013 };
1014
1015 // Interface to java.lang.invoke.MethodHandle objects
1016
1017 class java_lang_invoke_MethodHandle: AllStatic {
1018 friend class JavaClasses;
1019
1020 private:
1021 static int _type_offset; // the MethodType of this MH
1022 static int _form_offset; // the LambdaForm of this MH
1023
1024 static void compute_offsets();
1025
1026 public:
1027 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1028
1029 // Accessors
1030 static oop type(oop mh);
1031 static void set_type(oop mh, oop mtype);
1032
1033 static oop form(oop mh);
1034 static void set_form(oop mh, oop lform);
1035
1036 // Testers
1037 static bool is_subclass(Klass* klass) {
1038 return klass->is_subclass_of(vmClasses::MethodHandle_klass());
1039 }
1040 static bool is_instance(oop obj);
1041
1042 // Accessors for code generation:
1043 static int type_offset() { CHECK_INIT(_type_offset); }
1044 static int form_offset() { CHECK_INIT(_form_offset); }
1045 };
1046
1047 // Interface to java.lang.invoke.DirectMethodHandle objects
1048
1049 class java_lang_invoke_DirectMethodHandle: AllStatic {
1050 friend class JavaClasses;
1051
1052 private:
1053 static int _member_offset; // the MemberName of this DMH
1054
1055 static void compute_offsets();
1056
1057 public:
1058 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1059
1060 // Accessors
1061 static oop member(oop mh);
1062
1063 // Testers
1064 static bool is_subclass(Klass* klass) {
1065 return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass());
1066 }
1067 static bool is_instance(oop obj);
1068
1069 // Accessors for code generation:
1070 static int member_offset() { CHECK_INIT(_member_offset); }
1071 };
1072
1073 // Interface to java.lang.invoke.LambdaForm objects
1074 // (These are a private interface for managing adapter code generation.)
1075
1076 class java_lang_invoke_LambdaForm: AllStatic {
1077 friend class JavaClasses;
1078
1079 private:
1080 static int _vmentry_offset; // type is MemberName
1081
1082 static void compute_offsets();
1083
1084 public:
1085 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1086
1087 // Accessors
1088 static oop vmentry(oop lform);
1089
1090 // Testers
1091 static bool is_subclass(Klass* klass) {
1092 return vmClasses::LambdaForm_klass() != nullptr &&
1093 klass->is_subclass_of(vmClasses::LambdaForm_klass());
1094 }
1095 static bool is_instance(oop obj);
1096
1097 // Accessors for code generation:
1098 static int vmentry_offset() { CHECK_INIT(_vmentry_offset); }
1099 };
1100
1101 // Interface to java.lang.invoke.NativeEntryPoint objects
1102 // (These are a private interface for managing adapter code generation.)
1103
1104 class jdk_internal_foreign_abi_NativeEntryPoint: AllStatic {
1105 friend class JavaClasses;
1106
1107 private:
1108 static int _method_type_offset;
1109 static int _downcall_stub_address_offset;
1110
1111 static void compute_offsets();
1112
1113 public:
1114 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1115
1116 // Accessors
1117 static oop method_type(oop entry);
1118 static jlong downcall_stub_address(oop entry);
1119
1120 // Testers
1121 static bool is_subclass(Klass* klass) {
1122 return vmClasses::NativeEntryPoint_klass() != nullptr &&
1123 klass->is_subclass_of(vmClasses::NativeEntryPoint_klass());
1124 }
1125 static bool is_instance(oop obj);
1126
1127 // Accessors for code generation:
1128 static int method_type_offset_in_bytes() { return _method_type_offset; }
1129 static int downcall_stub_address_offset_in_bytes() { return _downcall_stub_address_offset; }
1130 };
1131
1132 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic {
1133 friend class JavaClasses;
1134
1135 private:
1136 static int _inputStorage_offset;
1137 static int _outputStorage_offset;
1138 static int _volatileStorage_offset;
1139 static int _stackAlignment_offset;
1140 static int _shadowSpace_offset;
1141 static int _scratch1_offset;
1142 static int _scratch2_offset;
1143
1144 static void compute_offsets();
1145
1146 public:
1147 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1148
1149 // Accessors
1150 static objArrayOop inputStorage(oop entry);
1151 static objArrayOop outputStorage(oop entry);
1152 static objArrayOop volatileStorage(oop entry);
1153 static jint stackAlignment(oop entry);
1154 static jint shadowSpace(oop entry);
1155 static oop scratch1(oop entry);
1156 static oop scratch2(oop entry);
1157
1158 // Testers
1159 static bool is_subclass(Klass* klass) {
1160 return vmClasses::ABIDescriptor_klass() != nullptr &&
1161 klass->is_subclass_of(vmClasses::ABIDescriptor_klass());
1162 }
1163 static bool is_instance(oop obj);
1164 };
1165
1166 class jdk_internal_foreign_abi_VMStorage: AllStatic {
1167 friend class JavaClasses;
1168
1169 private:
1170 static int _type_offset;
1171 static int _indexOrOffset_offset;
1172 static int _segmentMaskOrSize_offset;
1173 static int _debugName_offset;
1174
1175 static void compute_offsets();
1176
1177 public:
1178 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1179
1180 // Accessors
1181 static jbyte type(oop entry);
1182 static jint index_or_offset(oop entry);
1183 static jshort segment_mask_or_size(oop entry);
1184 static oop debugName(oop entry);
1185
1186 // Testers
1187 static bool is_subclass(Klass* klass) {
1188 return vmClasses::VMStorage_klass() != nullptr &&
1189 klass->is_subclass_of(vmClasses::VMStorage_klass());
1190 }
1191 static bool is_instance(oop obj);
1192 };
1193
1194 class jdk_internal_foreign_abi_CallConv: AllStatic {
1195 friend class JavaClasses;
1196
1197 private:
1198 static int _argRegs_offset;
1199 static int _retRegs_offset;
1200
1201 static void compute_offsets();
1202
1203 public:
1204 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1205
1206 // Accessors
1207 static objArrayOop argRegs(oop entry);
1208 static objArrayOop retRegs(oop entry);
1209
1210 // Testers
1211 static bool is_subclass(Klass* klass) {
1212 return vmClasses::CallConv_klass() != nullptr &&
1213 klass->is_subclass_of(vmClasses::CallConv_klass());
1214 }
1215 static bool is_instance(oop obj);
1216 };
1217
1218 // Interface to java.lang.invoke.MemberName objects
1219 // (These are a private interface for Java code to query the class hierarchy.)
1220
1221 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1222 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1223
1224 class java_lang_invoke_ResolvedMethodName : AllStatic {
1225 friend class JavaClasses;
1226
1227 static int _vmtarget_offset;
1228 static int _vmholder_offset;
1229
1230 static void compute_offsets();
1231 public:
1232 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1233
1234 static int vmtarget_offset() { CHECK_INIT(_vmtarget_offset); }
1235
1236 static Method* vmtarget(oop resolved_method);
1237 static void set_vmtarget(oop resolved_method, Method* method);
1238
1239 static void set_vmholder(oop resolved_method, oop holder);
1240
1241 // find or create resolved member name
1242 static oop find_resolved_method(const methodHandle& m, TRAPS);
1243
1244 static bool is_instance(oop resolved_method);
1245 };
1246
1247
1248 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1249 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1250
1251
1252 class java_lang_invoke_MemberName: AllStatic {
1253 friend class JavaClasses;
1254
1255 private:
1256 // From java.lang.invoke.MemberName:
1257 // private Class<?> clazz; // class in which the method is defined
1258 // private String name; // may be null if not yet materialized
1259 // private Object type; // may be null if not yet materialized
1260 // private int flags; // modifier bits; see reflect.Modifier
1261 // private ResolvedMethodName method; // holds VM-specific target value
1262 // private intptr_t vmindex; // member index within class or interface
1263 static int _clazz_offset;
1264 static int _name_offset;
1265 static int _type_offset;
1266 static int _flags_offset;
1267 static int _method_offset;
1268 static int _vmindex_offset;
1269
1270 static void compute_offsets();
1271
1272 public:
1273 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1274 // Accessors
1275 static oop clazz(oop mname);
1276 static void set_clazz(oop mname, oop clazz);
1277
1278 static oop type(oop mname);
1279 static void set_type(oop mname, oop type);
1280
1281 static oop name(oop mname);
1282 static void set_name(oop mname, oop name);
1283
1284 static int flags(oop mname);
1285 static void set_flags(oop mname, int flags);
1286
1287 // Link through ResolvedMethodName field to get Method*
1288 static Method* vmtarget(oop mname);
1289 static void set_method(oop mname, oop method);
1290
1291 static intptr_t vmindex(oop mname);
1292 static void set_vmindex(oop mname, intptr_t index);
1293
1294 // Testers
1295 static bool is_subclass(Klass* klass) {
1296 return klass->is_subclass_of(vmClasses::MemberName_klass());
1297 }
1298 static bool is_instance(oop obj);
1299
1300 static bool is_method(oop obj);
1301
1302 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1303 enum {
1304 MN_IS_METHOD = 0x00010000, // method (not constructor)
1305 MN_IS_OBJECT_CONSTRUCTOR = 0x00020000, // constructor
1306 MN_IS_FIELD = 0x00040000, // field
1307 MN_IS_TYPE = 0x00080000, // nested type
1308 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1309 MN_TRUSTED_FINAL = 0x00200000, // trusted final field
1310 MN_HIDDEN_MEMBER = 0x00400000, // @Hidden annotation detected
1311 MN_FLAT_FIELD = 0x00800000, // flat field
1312 MN_NULL_RESTRICTED_FIELD = 0x01000000, // null-restricted field
1313 MN_REFERENCE_KIND_SHIFT = 26, // refKind
1314 MN_REFERENCE_KIND_MASK = 0x3C000000 >> 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 // Testers
1510 static bool is_subclass(Klass* klass) {
1511 return klass->is_subclass_of(vmClasses::ClassLoader_klass());
1512 }
1513 static bool is_instance(oop obj);
1514
1515 static oop unnamedModule(oop loader);
1516
1517 // Debugging
1518 friend class JavaClasses;
1519 };
1520
1521
1522 // Interface to java.lang.System objects
1523
1524 class java_lang_System : AllStatic {
1525 private:
1526 static int _static_in_offset;
1527 static int _static_out_offset;
1528 static int _static_err_offset;
1529 static int _static_security_offset;
1530 static int _static_allow_security_offset;
1531 static int _static_never_offset;
1532
1533 public:
1534 static int in_offset() { CHECK_INIT(_static_in_offset); }
1535 static int out_offset() { CHECK_INIT(_static_out_offset); }
1536 static int err_offset() { CHECK_INIT(_static_err_offset); }
1537 static bool allow_security_manager();
1538 static bool has_security_manager();
1539
1540 static void compute_offsets();
1541 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1542
1543 // Debugging
1544 friend class JavaClasses;
1545 };
1546
1547
1548 // Interface to java.lang.StackTraceElement objects
1549
1550 class java_lang_StackTraceElement: AllStatic {
1551 private:
1552 static int _declaringClassObject_offset;
1553 static int _classLoaderName_offset;
1554 static int _moduleName_offset;
1555 static int _moduleVersion_offset;
1556 static int _declaringClass_offset;
1557 static int _methodName_offset;
1558 static int _fileName_offset;
1559 static int _lineNumber_offset;
1560
1561 // Setters
1562 static void set_classLoaderName(oop element, oop value);
1563 static void set_moduleName(oop element, oop value);
1564 static void set_moduleVersion(oop element, oop value);
1565 static void set_declaringClass(oop element, oop value);
1566 static void set_methodName(oop element, oop value);
1567 static void set_fileName(oop element, oop value);
1568 static void set_lineNumber(oop element, int value);
1569 static void set_declaringClassObject(oop element, oop value);
1570
1571 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1572 const methodHandle& method, int bci,
1573 Symbol*& source, oop& source_file, int& line_number, TRAPS);
1574
1575 public:
1576 // Create an instance of StackTraceElement
1577 static oop create(const methodHandle& method, int bci, TRAPS);
1578
1579 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1580 int version, int bci, Symbol* name, TRAPS);
1581
1582 static void compute_offsets();
1583 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1584
1585 #if INCLUDE_JVMCI
1586 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1587 #endif
1588
1589 // Debugging
1590 friend class JavaClasses;
1591 };
1592
1593
1594 class Backtrace: AllStatic {
1595 public:
1596 // Helper backtrace functions to store bci|version together.
1597 static int merge_bci_and_version(int bci, int version);
1598 static int merge_mid_and_cpref(int mid, int cpref);
1599 static int bci_at(unsigned int merged);
1600 static int version_at(unsigned int merged);
1601 static int mid_at(unsigned int merged);
1602 static int cpref_at(unsigned int merged);
1603 static int get_line_number(Method* method, int bci);
1604 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1605
1606 // Debugging
1607 friend class JavaClasses;
1608 };
1609
1610 class java_lang_ClassFrameInfo: AllStatic {
1611 private:
1612 static int _classOrMemberName_offset;
1613 static int _flags_offset;
1614
1615 public:
1616 static oop classOrMemberName(oop info);
1617 static int flags(oop info);
1618
1619 // Setters
1620 static void init_class(Handle stackFrame, const methodHandle& m);
1621 static void init_method(Handle stackFrame, const methodHandle& m, TRAPS);
1622
1623 static void compute_offsets();
1624 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1625
1626 // Debugging
1627 friend class JavaClasses;
1628 };
1629
1630 // Interface to java.lang.StackFrameInfo objects
1631
1632 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1633 macro(java_lang_StackFrameInfo, version, short_signature, false)
1634
1635 class java_lang_StackFrameInfo: AllStatic {
1636 private:
1637 static int _type_offset;
1638 static int _name_offset;
1639 static int _bci_offset;
1640 static int _version_offset;
1641 static int _contScope_offset;
1642
1643 public:
1644 // Getters
1645 static oop name(oop info);
1646 static oop type(oop info);
1647 static Method* get_method(oop info);
1648
1649 // Setters
1650 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS);
1651 static void set_name(oop info, oop value);
1652 static void set_type(oop info, oop value);
1653 static void set_bci(oop info, int value);
1654
1655 static void set_version(oop info, short value);
1656 static void set_contScope(oop info, oop value);
1657
1658 static void compute_offsets();
1659 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1660
1661 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1662
1663 // Debugging
1664 friend class JavaClasses;
1665 };
1666
1667 class java_lang_LiveStackFrameInfo: AllStatic {
1668 private:
1669 static int _monitors_offset;
1670 static int _locals_offset;
1671 static int _operands_offset;
1672 static int _mode_offset;
1673
1674 public:
1675 static void set_monitors(oop info, oop value);
1676 static void set_locals(oop info, oop value);
1677 static void set_operands(oop info, oop value);
1678 static void set_mode(oop info, int value);
1679
1680 static void compute_offsets();
1681 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1682
1683 // Debugging
1684 friend class JavaClasses;
1685 };
1686
1687 // Interface to java.lang.reflect.RecordComponent objects
1688
1689 class java_lang_reflect_RecordComponent: AllStatic {
1690 private:
1691 static int _clazz_offset;
1692 static int _name_offset;
1693 static int _type_offset;
1694 static int _accessor_offset;
1695 static int _signature_offset;
1696 static int _annotations_offset;
1697 static int _typeAnnotations_offset;
1698
1699 // Setters
1700 static void set_clazz(oop element, oop value);
1701 static void set_name(oop element, oop value);
1702 static void set_type(oop element, oop value);
1703 static void set_accessor(oop element, oop value);
1704 static void set_signature(oop element, oop value);
1705 static void set_annotations(oop element, oop value);
1706 static void set_typeAnnotations(oop element, oop value);
1707
1708 public:
1709 // Create an instance of RecordComponent
1710 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1711
1712 static void compute_offsets();
1713 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1714
1715 // Debugging
1716 friend class JavaClasses;
1717 };
1718
1719
1720 // Interface to java.lang.AssertionStatusDirectives objects
1721
1722 class java_lang_AssertionStatusDirectives: AllStatic {
1723 private:
1724 static int _classes_offset;
1725 static int _classEnabled_offset;
1726 static int _packages_offset;
1727 static int _packageEnabled_offset;
1728 static int _deflt_offset;
1729
1730 public:
1731 // Setters
1732 static void set_classes(oop obj, oop val);
1733 static void set_classEnabled(oop obj, oop val);
1734 static void set_packages(oop obj, oop val);
1735 static void set_packageEnabled(oop obj, oop val);
1736 static void set_deflt(oop obj, bool val);
1737
1738 static void compute_offsets();
1739 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1740
1741 // Debugging
1742 friend class JavaClasses;
1743 };
1744
1745
1746 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1747 private:
1748 static int _owner_offset;
1749 public:
1750 static void compute_offsets();
1751 static oop get_owner_threadObj(oop obj);
1752 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1753 };
1754
1755 // Interface to jdk.internal.misc.UnsafeConsants
1756
1757 class jdk_internal_misc_UnsafeConstants : AllStatic {
1758 public:
1759 static void set_unsafe_constants();
1760 static void compute_offsets() { }
1761 static void serialize_offsets(SerializeClosure* f) { }
1762 };
1763
1764 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects
1765
1766 class vector_VectorPayload : AllStatic {
1767 private:
1768 static int _payload_offset;
1769 public:
1770 static void set_payload(oop o, oop val);
1771
1772 static void compute_offsets();
1773 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1774
1775 // Testers
1776 static bool is_subclass(Klass* klass) {
1777 return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass());
1778 }
1779 static bool is_instance(oop obj);
1780 };
1781
1782 class java_lang_Integer : AllStatic {
1783 public:
1784 static jint value(oop obj);
1785 };
1786
1787 class java_lang_Long : AllStatic {
1788 public:
1789 static jlong value(oop obj);
1790 };
1791
1792 class java_lang_Character : AllStatic {
1793 public:
1794 static jchar value(oop obj);
1795 };
1796
1797 class java_lang_Short : AllStatic {
1798 public:
1799 static jshort value(oop obj);
1800 };
1801
1802 class java_lang_Byte : AllStatic {
1803 public:
1804 static jbyte value(oop obj);
1805 };
1806
1807 class java_lang_Boolean : AllStatic {
1808 private:
1809 static int _static_TRUE_offset;
1810 static int _static_FALSE_offset;
1811 public:
1812 static Symbol* symbol();
1813 static void compute_offsets(InstanceKlass* k);
1814 static oop get_TRUE(InstanceKlass *k);
1815 static oop get_FALSE(InstanceKlass *k);
1816 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1817 static jboolean value(oop obj);
1818 };
1819
1820 class java_lang_Integer_IntegerCache : AllStatic {
1821 private:
1822 static int _static_cache_offset;
1823 public:
1824 static Symbol* symbol();
1825 static void compute_offsets(InstanceKlass* k);
1826 static objArrayOop cache(InstanceKlass *k);
1827 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1828 };
1829
1830 class java_lang_Long_LongCache : AllStatic {
1831 private:
1832 static int _static_cache_offset;
1833 public:
1834 static Symbol* symbol();
1835 static void compute_offsets(InstanceKlass* k);
1836 static objArrayOop cache(InstanceKlass *k);
1837 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1838 };
1839
1840 class java_lang_Character_CharacterCache : AllStatic {
1841 private:
1842 static int _static_cache_offset;
1843 public:
1844 static Symbol* symbol();
1845 static void compute_offsets(InstanceKlass* k);
1846 static objArrayOop cache(InstanceKlass *k);
1847 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1848 };
1849
1850 class java_lang_Short_ShortCache : AllStatic {
1851 private:
1852 static int _static_cache_offset;
1853 public:
1854 static Symbol* symbol();
1855 static void compute_offsets(InstanceKlass* k);
1856 static objArrayOop cache(InstanceKlass *k);
1857 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1858 };
1859
1860 class java_lang_Byte_ByteCache : AllStatic {
1861 private:
1862 static int _static_cache_offset;
1863 public:
1864 static Symbol* symbol();
1865 static void compute_offsets(InstanceKlass* k);
1866 static objArrayOop cache(InstanceKlass *k);
1867 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1868 };
1869
1870 // Interface to java.lang.InternalError objects
1871
1872 #define INTERNALERROR_INJECTED_FIELDS(macro) \
1873 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1874
1875 class java_lang_InternalError : AllStatic {
1876 private:
1877 static int _during_unsafe_access_offset;
1878 public:
1879 static jboolean during_unsafe_access(oop internal_error);
1880 static void set_during_unsafe_access(oop internal_error);
1881 static void compute_offsets();
1882 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1883 };
1884
1885 // Use to declare fields that need to be injected into Java classes
1886 // for the JVM to use. The name_index and signature_index are
1887 // declared in vmSymbols. The may_be_java flag is used to declare
1888 // fields that might already exist in Java but should be injected if
1889 // they don't. Otherwise the field is unconditionally injected and
1890 // the JVM uses the injected one. This is to ensure that name
1891 // collisions don't occur. In general may_be_java should be false
1892 // unless there's a good reason.
1893
1894 class InjectedField {
1895 public:
1896 const vmClassID klass_id;
1897 const vmSymbolID name_index;
1898 const vmSymbolID signature_index;
1899 const bool may_be_java;
1900
1901
1902 Klass* klass() const { return vmClasses::klass_at(klass_id); }
1903 Symbol* name() const { return lookup_symbol(name_index); }
1904 Symbol* signature() const { return lookup_symbol(signature_index); }
1905
1906 int compute_offset();
1907
1908 // Find the Symbol for this index
1909 static Symbol* lookup_symbol(vmSymbolID symbol_index) {
1910 return Symbol::vm_symbol_at(symbol_index);
1911 }
1912 };
1913
1914
1915 // Interface to hard-coded offset checking
1916
1917 enum class InjectedFieldID : int;
1918
1919 class JavaClasses : AllStatic {
1920 private:
1921
1922 static InjectedField _injected_fields[];
1923
1924 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1925 public:
1926
1927 static int compute_injected_offset(InjectedFieldID id);
1928
1929 static void compute_offsets();
1930 static void check_offsets() PRODUCT_RETURN;
1931 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1932 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1933 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1934
1935 static void compute_offset(int &dest_offset,
1936 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
1937 bool is_static = false);
1938 static void compute_offset(int& dest_offset, InstanceKlass* ik,
1939 const char* name_string, Symbol* signature_symbol,
1940 bool is_static = false);
1941 };
1942
1943 #undef CHECK_INIT
1944
1945 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP