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 static int _reflectionData_offset;
238
239 static bool _offsets_computed;
240
241 static GrowableArray<Klass*>* _fixup_mirror_list;
242 static GrowableArray<Klass*>* _fixup_module_field_list;
243
244 static void set_protection_domain(oop java_class, oop protection_domain);
245 static void set_class_loader(oop java_class, oop class_loader);
246 static void set_component_mirror(oop java_class, oop comp_mirror);
247 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
248 Handle classData, TRAPS);
249 static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
250 public:
251 static void allocate_fixup_lists();
252 static void compute_offsets();
253
254 // Instance creation
255 static void allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
256 Handle& mirror, Handle& comp_mirror, TRAPS); // returns mirror and comp_mirror
257 static void create_mirror(Klass* k, Handle class_loader, Handle module,
258 Handle protection_domain, Handle classData, TRAPS);
259 static void fixup_mirror(Klass* k, TRAPS);
260 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
261
262 // Archiving
263 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
264 static void create_scratch_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
265 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
266 Handle protection_domain,
267 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
268
269 static void fixup_module_field(Klass* k, Handle module);
270
271 // Conversion
272 static Klass* as_Klass(oop java_class);
273 static void set_klass(oop java_class, Klass* klass);
274 static BasicType as_BasicType(oop java_class, Klass** reference_klass = nullptr);
275 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
276 static void print_signature(oop java_class, outputStream *st);
277 static const char* as_external_name(oop java_class);
278 // Testing
279 static bool is_instance(oop obj);
280
281 static bool is_primitive(oop java_class);
282 static BasicType primitive_type(oop java_class);
283 static oop primitive_mirror(BasicType t);
284 // JVM_NewArray support
285 static Klass* array_klass_acquire(oop java_class);
286 static void release_set_array_klass(oop java_class, Klass* klass);
287 // compiler support for class operations
288 static int klass_offset() { CHECK_INIT(_klass_offset); }
289 static int array_klass_offset() { CHECK_INIT(_array_klass_offset); }
290 // Support for classRedefinedCount field
291 static int classRedefinedCount(oop the_class_mirror);
292 static void set_classRedefinedCount(oop the_class_mirror, int value);
293
294 // Support for embedded per-class oops
295 static oop protection_domain(oop java_class);
296 static oop component_mirror(oop java_class);
297 static objArrayOop signers(oop java_class);
298 static void set_signers(oop java_class, objArrayOop signers);
299 static oop class_data(oop java_class);
300 static void set_class_data(oop java_class, oop classData);
301
302 static oop reflection_data(oop java_class);
303 static void set_reflection_data(oop java_class, oop reflection_data);
304 static bool has_reflection_data(oop java_class);
305
306 static int component_mirror_offset() { return _component_mirror_offset; }
307
308 static oop class_loader(oop java_class);
309 static void set_module(oop java_class, oop module);
310 static oop module(oop java_class);
311
312 static oop name(Handle java_class, TRAPS);
313
314 static oop source_file(oop java_class);
315 static void set_source_file(oop java_class, oop source_file);
316
317 static size_t oop_size(oop java_class);
318 static void set_oop_size(HeapWord* java_class, size_t size);
319 static int static_oop_field_count(oop java_class);
320 static void set_static_oop_field_count(oop java_class, int size);
321
322 static GrowableArray<Klass*>* fixup_mirror_list() {
323 return _fixup_mirror_list;
324 }
325 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
326 _fixup_mirror_list = v;
327 }
328
329 static GrowableArray<Klass*>* fixup_module_field_list() {
330 return _fixup_module_field_list;
331 }
332 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
333 _fixup_module_field_list = v;
334 }
335
336 // Debugging
337 friend class JavaClasses;
338 };
339
340 // Interface to java.lang.Thread objects
341
342 #define THREAD_INJECTED_FIELDS(macro) \
343 macro(java_lang_Thread, jvmti_thread_state, intptr_signature, false) \
344 macro(java_lang_Thread, jvmti_VTMS_transition_disable_count, int_signature, false) \
345 macro(java_lang_Thread, jvmti_is_in_VTMS_transition, bool_signature, false) \
346 JFR_ONLY(macro(java_lang_Thread, jfr_epoch, short_signature, false))
347
348 class java_lang_Thread : AllStatic {
349 friend class java_lang_VirtualThread;
350 friend class JVMCIVMStructs;
351 private:
352 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
353 // so we compute the offsets at startup rather than hard-wiring them.
354 static int _holder_offset;
355 static int _name_offset;
356 static int _contextClassLoader_offset;
357 static int _inheritedAccessControlContext_offset;
358 static int _eetop_offset;
359 static int _jvmti_thread_state_offset;
360 static int _jvmti_VTMS_transition_disable_count_offset;
361 static int _jvmti_is_in_VTMS_transition_offset;
362 static int _interrupted_offset;
363 static int _interruptLock_offset;
364 static int _tid_offset;
365 static int _continuation_offset;
366 static int _park_blocker_offset;
367 static int _scopedValueBindings_offset;
368 JFR_ONLY(static int _jfr_epoch_offset;)
369
370 static void compute_offsets();
371
372 public:
373 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
374
375 // Returns the JavaThread associated with the thread obj
376 static JavaThread* thread(oop java_thread);
377 static JavaThread* thread_acquire(oop java_thread);
378 // Set JavaThread for instance
379 static void set_thread(oop java_thread, JavaThread* thread);
380 static void release_set_thread(oop java_thread, JavaThread* thread);
381 // FieldHolder
382 static oop holder(oop java_thread);
383 // interruptLock
384 static oop interrupt_lock(oop java_thread);
385 // Interrupted status
386 static bool interrupted(oop java_thread);
387 static void set_interrupted(oop java_thread, bool val);
388 // Name
389 static oop name(oop java_thread);
390 static void set_name(oop java_thread, oop name);
391 // Priority
392 static ThreadPriority priority(oop java_thread);
393 static void set_priority(oop java_thread, ThreadPriority priority);
394 // Thread group
395 static oop threadGroup(oop java_thread);
396 // Alive (NOTE: this is not really a field, but provides the correct
397 // definition without doing a Java call)
398 static bool is_alive(oop java_thread);
399 // Daemon
400 static bool is_daemon(oop java_thread);
401 static void set_daemon(oop java_thread);
402 // Context ClassLoader
403 static oop context_class_loader(oop java_thread);
404 // Control context
405 static oop inherited_access_control_context(oop java_thread);
406 // Stack size hint
407 static jlong stackSize(oop java_thread);
408 // Thread ID
409 static int64_t thread_id(oop java_thread);
410 static ByteSize thread_id_offset();
411 // Continuation
412 static inline oop continuation(oop java_thread);
413
414 static JvmtiThreadState* jvmti_thread_state(oop java_thread);
415 static void set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state);
416 static int VTMS_transition_disable_count(oop java_thread);
417 static void inc_VTMS_transition_disable_count(oop java_thread);
418 static void dec_VTMS_transition_disable_count(oop java_thread);
419 static bool is_in_VTMS_transition(oop java_thread);
420 static void set_is_in_VTMS_transition(oop java_thread, bool val);
421 static int is_in_VTMS_transition_offset();
422
423 // Clear all scoped value bindings on error
424 static void clear_scopedValueBindings(oop java_thread);
425
426 // Blocker object responsible for thread parking
427 static oop park_blocker(oop java_thread);
428
429 // Write thread status info to threadStatus field of java.lang.Thread.
430 static void set_thread_status(oop java_thread_oop, JavaThreadStatus status);
431 // Read thread status info from threadStatus field of java.lang.Thread.
432 static JavaThreadStatus get_thread_status(oop java_thread_oop);
433
434 static const char* thread_status_name(oop java_thread_oop);
435
436 // Fill in current stack trace, can cause GC
437 static oop async_get_stack_trace(oop java_thread, TRAPS);
438
439 JFR_ONLY(static u2 jfr_epoch(oop java_thread);)
440 JFR_ONLY(static void set_jfr_epoch(oop java_thread, u2 epoch);)
441 JFR_ONLY(static int jfr_epoch_offset() { CHECK_INIT(_jfr_epoch_offset); })
442
443 // Debugging
444 friend class JavaClasses;
445 };
446
447 // Interface to java.lang.Thread$FieldHolder objects
448
449 class java_lang_Thread_FieldHolder : AllStatic {
450 private:
451 static int _group_offset;
452 static int _priority_offset;
453 static int _stackSize_offset;
454 static int _daemon_offset;
455 static int _thread_status_offset;
456
457 static void compute_offsets();
458
459 public:
460 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
461
462 static oop threadGroup(oop holder);
463
464 static ThreadPriority priority(oop holder);
465 static void set_priority(oop holder, ThreadPriority priority);
466
467 static jlong stackSize(oop holder);
468
469 static bool is_daemon(oop holder);
470 static void set_daemon(oop holder, bool val);
471
472 static void set_thread_status(oop holder, JavaThreadStatus status);
473 static JavaThreadStatus get_thread_status(oop holder);
474
475 friend class JavaClasses;
476 };
477
478 // Interface to java.lang.Thread$Constants objects
479
480 class java_lang_Thread_Constants : AllStatic {
481 private:
482 static int _static_VTHREAD_GROUP_offset;
483 static int _static_NOT_SUPPORTED_CLASSLOADER_offset;
484
485 static void compute_offsets();
486 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
487
488 public:
489 static oop get_VTHREAD_GROUP();
490
491 friend class JavaClasses;
492 };
493
494 // Interface to java.lang.ThreadGroup objects
495
496 class java_lang_ThreadGroup : AllStatic {
497 private:
498 static int _parent_offset;
499 static int _name_offset;
500 static int _maxPriority_offset;
501 static int _daemon_offset;
502
503 static void compute_offsets();
504 public:
505 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
506
507 // parent ThreadGroup
508 static oop parent(oop java_thread_group);
509 // name
510 static const char* name(oop java_thread_group);
511 // maxPriority in group
512 static ThreadPriority maxPriority(oop java_thread_group);
513 // Daemon
514 static bool is_daemon(oop java_thread_group);
515
516 // Debugging
517 friend class JavaClasses;
518 };
519
520
521 // Interface to java.lang.VirtualThread objects
522
523 class java_lang_VirtualThread : AllStatic {
524 private:
525 static int static_vthread_scope_offset;
526 static int _carrierThread_offset;
527 static int _continuation_offset;
528 static int _state_offset;
529 JFR_ONLY(static int _jfr_epoch_offset;)
530 public:
531 enum {
532 NEW = 0,
533 STARTED = 1,
534 RUNNING = 2,
535 PARKING = 3,
536 PARKED = 4,
537 PINNED = 5,
538 TIMED_PARKING = 6,
539 TIMED_PARKED = 7,
540 TIMED_PINNED = 8,
541 UNPARKED = 9,
542 YIELDING = 10,
543 YIELDED = 11,
544 TERMINATED = 99,
545
546 // additional state bits
547 SUSPENDED = 1 << 8, // suspended when unmounted
548 };
549
550 static void compute_offsets();
551 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
552
553 // Testers
554 static bool is_subclass(Klass* klass) {
555 return klass->is_subclass_of(vmClasses::VirtualThread_klass());
556 }
557 static bool is_instance(oop obj);
558
559 static oop vthread_scope();
560 static oop carrier_thread(oop vthread);
561 static oop continuation(oop vthread);
562 static int state(oop vthread);
563 static JavaThreadStatus map_state_to_thread_status(int state);
564 };
565
566
567 // Interface to java.lang.Throwable objects
568
569 class java_lang_Throwable: AllStatic {
570 friend class BacktraceBuilder;
571 friend class BacktraceIterator;
572
573 private:
574 // Trace constants
575 enum {
576 trace_methods_offset = 0,
577 trace_bcis_offset = 1,
578 trace_mirrors_offset = 2,
579 trace_names_offset = 3,
580 trace_conts_offset = 4,
581 trace_next_offset = 5,
582 trace_hidden_offset = 6,
583 trace_size = 7,
584 trace_chunk_size = 32
585 };
586
587 static int _backtrace_offset;
588 static int _detailMessage_offset;
589 static int _stackTrace_offset;
590 static int _depth_offset;
591 static int _cause_offset;
592 static int _static_unassigned_stacktrace_offset;
593
594 // StackTrace (programmatic access, new since 1.4)
595 static void clear_stacktrace(oop throwable);
596 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
597 static void set_stacktrace(oop throwable, oop st_element_array);
598 static oop unassigned_stacktrace();
599
600 public:
601 // Backtrace
602 static oop backtrace(oop throwable);
603 static void set_backtrace(oop throwable, oop value);
604 static int depth(oop throwable);
605 static void set_depth(oop throwable, int value);
606 // Message
607 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
608 static oop message(oop throwable);
609 static const char* message_as_utf8(oop throwable);
610 static void set_message(oop throwable, oop value);
611
612 static oop cause(oop throwable);
613
614 static void print_stack_element(outputStream *st, Method* method, int bci);
615
616 static void compute_offsets();
617 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
618
619 // Allocate space for backtrace (created but stack trace not filled in)
620 static void allocate_backtrace(Handle throwable, TRAPS);
621 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
622 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
623 // Fill in current stack trace, can cause GC
624 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
625 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
626
627 // Programmatic access to stack trace
628 static void get_stack_trace_elements(int depth, Handle backtrace, objArrayHandle stack_trace, TRAPS);
629
630 // For recreating class initialization error exceptions.
631 static Handle create_initialization_error(JavaThread* current, Handle throwable);
632
633 static oop create_exception_instance(Symbol* class_name, TRAPS);
634
635 // Printing
636 static void print(oop throwable, outputStream* st);
637 static void print_stack_trace(Handle throwable, outputStream* st);
638 static void java_printStackTrace(Handle throwable, TRAPS);
639 // Debugging
640 friend class JavaClasses;
641 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
642 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
643 };
644
645
646 // Interface to java.lang.reflect.AccessibleObject objects
647
648 class java_lang_reflect_AccessibleObject: AllStatic {
649 private:
650 // Note that to reduce dependencies on the JDK we compute these
651 // offsets at run-time.
652 static int _override_offset;
653
654 static void compute_offsets();
655
656 public:
657 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
658
659 // Accessors
660 static jboolean override(oop reflect);
661 static void set_override(oop reflect, jboolean value);
662
663 // Debugging
664 friend class JavaClasses;
665 };
666
667
668 // Interface to java.lang.reflect.Method objects
669
670 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
671 private:
672 // Note that to reduce dependencies on the JDK we compute these
673 // offsets at run-time.
674 static int _clazz_offset;
675 static int _name_offset;
676 static int _returnType_offset;
677 static int _parameterTypes_offset;
678 static int _exceptionTypes_offset;
679 static int _slot_offset;
680 static int _modifiers_offset;
681 static int _signature_offset;
682 static int _annotations_offset;
683 static int _parameter_annotations_offset;
684 static int _annotation_default_offset;
685
686 static void compute_offsets();
687 public:
688 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
689
690 // Allocation
691 static Handle create(TRAPS);
692
693 // Accessors
694 static oop clazz(oop reflect);
695 static void set_clazz(oop reflect, oop value);
696
697 static void set_name(oop method, oop value);
698
699 static oop return_type(oop method);
700 static void set_return_type(oop method, oop value);
701
702 static oop parameter_types(oop method);
703 static void set_parameter_types(oop method, oop value);
704
705 static int slot(oop reflect);
706 static void set_slot(oop reflect, int value);
707
708 static void set_exception_types(oop method, oop value);
709 static void set_modifiers(oop method, int value);
710 static void set_signature(oop method, oop value);
711 static void set_annotations(oop method, oop value);
712 static void set_parameter_annotations(oop method, oop value);
713 static void set_annotation_default(oop method, oop value);
714
715 // Debugging
716 friend class JavaClasses;
717 };
718
719
720 // Interface to java.lang.reflect.Constructor objects
721
722 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
723 private:
724 // Note that to reduce dependencies on the JDK we compute these
725 // offsets at run-time.
726 static int _clazz_offset;
727 static int _parameterTypes_offset;
728 static int _exceptionTypes_offset;
729 static int _slot_offset;
730 static int _modifiers_offset;
731 static int _signature_offset;
732 static int _annotations_offset;
733 static int _parameter_annotations_offset;
734
735 static void compute_offsets();
736 public:
737 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
738
739 // Allocation
740 static Handle create(TRAPS);
741
742 // Accessors
743 static oop clazz(oop reflect);
744 static void set_clazz(oop reflect, oop value);
745
746 static oop parameter_types(oop constructor);
747 static void set_parameter_types(oop constructor, oop value);
748
749 static int slot(oop reflect);
750 static void set_slot(oop reflect, int value);
751
752 static void set_exception_types(oop constructor, oop value);
753 static void set_modifiers(oop constructor, int value);
754 static void set_signature(oop constructor, oop value);
755 static void set_annotations(oop constructor, oop value);
756 static void set_parameter_annotations(oop method, oop value);
757
758 // Debugging
759 friend class JavaClasses;
760 };
761
762
763 // Interface to java.lang.reflect.Field objects
764
765 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
766 private:
767 // Note that to reduce dependencies on the JDK we compute these
768 // offsets at run-time.
769 static int _clazz_offset;
770 static int _name_offset;
771 static int _type_offset;
772 static int _slot_offset;
773 static int _modifiers_offset;
774 static int _trusted_final_offset;
775 static int _signature_offset;
776 static int _annotations_offset;
777
778 static void compute_offsets();
779
780 public:
781 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
782
783 // Allocation
784 static Handle create(TRAPS);
785
786 // Accessors
787 static oop clazz(oop reflect);
788 static void set_clazz(oop reflect, oop value);
789
790 static oop name(oop field);
791 static void set_name(oop field, oop value);
792
793 static oop type(oop field);
794 static void set_type(oop field, oop value);
795
796 static int slot(oop reflect);
797 static void set_slot(oop reflect, int value);
798
799 static int modifiers(oop field);
800 static void set_modifiers(oop field, int value);
801
802 static void set_trusted_final(oop field);
803
804 static void set_signature(oop constructor, oop value);
805 static void set_annotations(oop constructor, oop value);
806
807 // Debugging
808 friend class JavaClasses;
809 };
810
811 class java_lang_reflect_Parameter {
812 private:
813 // Note that to reduce dependencies on the JDK we compute these
814 // offsets at run-time.
815 static int _name_offset;
816 static int _modifiers_offset;
817 static int _index_offset;
818 static int _executable_offset;
819
820 static void compute_offsets();
821
822 public:
823 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
824
825 // Allocation
826 static Handle create(TRAPS);
827
828 // Accessors
829 static oop name(oop field);
830 static void set_name(oop field, oop value);
831
832 static int index(oop reflect);
833 static void set_index(oop reflect, int value);
834
835 static int modifiers(oop reflect);
836 static void set_modifiers(oop reflect, int value);
837
838 static oop executable(oop constructor);
839 static void set_executable(oop constructor, oop value);
840
841 friend class JavaClasses;
842 };
843
844 #define MODULE_INJECTED_FIELDS(macro) \
845 macro(java_lang_Module, module_entry, intptr_signature, false)
846
847 class java_lang_Module {
848 private:
849 static int _loader_offset;
850 static int _name_offset;
851 static int _module_entry_offset;
852
853 static void compute_offsets();
854
855 public:
856 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
857
858 // Allocation
859 static Handle create(Handle loader, Handle module_name, TRAPS);
860
861 // Testers
862 static bool is_instance(oop obj);
863
864 // Accessors
865 static oop loader(oop module);
866 static void set_loader(oop module, oop value);
867
868 // CDS
869 static int module_entry_offset() { return _module_entry_offset; }
870
871 static oop name(oop module);
872 static void set_name(oop module, oop value);
873
874 static ModuleEntry* module_entry(oop module);
875 static ModuleEntry* module_entry_raw(oop module);
876 static void set_module_entry(oop module, ModuleEntry* module_entry);
877
878 friend class JavaClasses;
879 };
880
881 // Interface to jdk.internal.reflect.ConstantPool objects
882 class reflect_ConstantPool {
883 private:
884 // Note that to reduce dependencies on the JDK we compute these
885 // offsets at run-time.
886 static int _oop_offset;
887
888 static void compute_offsets();
889
890 public:
891 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
892
893 // Allocation
894 static Handle create(TRAPS);
895
896 // Accessors
897 static void set_cp(oop reflect, ConstantPool* value);
898 static int oop_offset() { CHECK_INIT(_oop_offset); }
899
900 static ConstantPool* get_cp(oop reflect);
901
902 // Debugging
903 friend class JavaClasses;
904 };
905
906
907 // Interface to java.lang primitive type boxing objects:
908 // - java.lang.Boolean
909 // - java.lang.Character
910 // - java.lang.Float
911 // - java.lang.Double
912 // - java.lang.Byte
913 // - java.lang.Short
914 // - java.lang.Integer
915 // - java.lang.Long
916
917 // This could be separated out into 8 individual classes.
918
919 class java_lang_boxing_object: AllStatic {
920 private:
921 static int _value_offset;
922 static int _long_value_offset;
923
924 static void compute_offsets();
925 static oop initialize_and_allocate(BasicType type, TRAPS);
926 public:
927 // Allocation. Returns a boxed value, or null for invalid type.
928 static oop create(BasicType type, jvalue* value, TRAPS);
929 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
930 static BasicType get_value(oop box, jvalue* value);
931 static BasicType set_value(oop box, jvalue* value);
932 static BasicType basic_type(oop box);
933 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
934 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
935 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
936 static void print(BasicType type, jvalue* value, outputStream* st);
937
938 static int value_offset(BasicType type) {
939 return is_double_word_type(type) ? _long_value_offset : _value_offset;
940 }
941
942 static void serialize_offsets(SerializeClosure* f);
943
944 // Debugging
945 friend class JavaClasses;
946 };
947
948
949
950 // Interface to java.lang.ref.Reference objects
951
952 class java_lang_ref_Reference: AllStatic {
953 static int _referent_offset;
954 static int _queue_offset;
955 static int _next_offset;
956 static int _discovered_offset;
957
958 static bool _offsets_initialized;
959
960 public:
961 // Accessors
962 static inline oop weak_referent_no_keepalive(oop ref);
963 static inline oop weak_referent(oop ref);
964 static inline oop phantom_referent_no_keepalive(oop ref);
965 static inline oop unknown_referent_no_keepalive(oop ref);
966 static inline void clear_referent(oop ref);
967 static inline void clear_referent_raw(oop ref);
968 static inline HeapWord* referent_addr_raw(oop ref);
969 static inline oop next(oop ref);
970 static inline void set_next(oop ref, oop value);
971 static inline void set_next_raw(oop ref, oop value);
972 static inline HeapWord* next_addr_raw(oop ref);
973 static inline oop discovered(oop ref);
974 static inline void set_discovered(oop ref, oop value);
975 static inline void set_discovered_raw(oop ref, oop value);
976 static inline HeapWord* discovered_addr_raw(oop ref);
977 static bool is_referent_field(oop obj, ptrdiff_t offset);
978 static inline bool is_final(oop ref);
979 static inline bool is_phantom(oop ref);
980 static inline bool is_weak(oop ref);
981 static inline bool is_soft(oop ref);
982
983 static int referent_offset() { CHECK_INIT(_referent_offset); }
984 static int queue_offset() { CHECK_INIT(_queue_offset); }
985 static int next_offset() { CHECK_INIT(_next_offset); }
986 static int discovered_offset() { CHECK_INIT(_discovered_offset); }
987
988 static void compute_offsets();
989 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
990 };
991
992
993 // Interface to java.lang.ref.SoftReference objects
994
995 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
996 static int _timestamp_offset;
997 static int _static_clock_offset;
998
999 public:
1000 // Accessors
1001 static jlong timestamp(oop ref);
1002
1003 // Accessors for statics
1004 static jlong clock();
1005 static void set_clock(jlong value);
1006
1007 static void compute_offsets();
1008 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1009 };
1010
1011 // Interface to java.lang.invoke.MethodHandle objects
1012
1013 class java_lang_invoke_MethodHandle: AllStatic {
1014 friend class JavaClasses;
1015
1016 private:
1017 static int _type_offset; // the MethodType of this MH
1018 static int _form_offset; // the LambdaForm of this MH
1019
1020 static void compute_offsets();
1021
1022 public:
1023 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1024
1025 // Accessors
1026 static oop type(oop mh);
1027 static void set_type(oop mh, oop mtype);
1028
1029 static oop form(oop mh);
1030 static void set_form(oop mh, oop lform);
1031
1032 // Testers
1033 static bool is_subclass(Klass* klass) {
1034 return klass->is_subclass_of(vmClasses::MethodHandle_klass());
1035 }
1036 static bool is_instance(oop obj);
1037
1038 // Accessors for code generation:
1039 static int type_offset() { CHECK_INIT(_type_offset); }
1040 static int form_offset() { CHECK_INIT(_form_offset); }
1041 };
1042
1043 // Interface to java.lang.invoke.DirectMethodHandle objects
1044
1045 class java_lang_invoke_DirectMethodHandle: AllStatic {
1046 friend class JavaClasses;
1047
1048 private:
1049 static int _member_offset; // the MemberName of this DMH
1050
1051 static void compute_offsets();
1052
1053 public:
1054 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1055
1056 // Accessors
1057 static oop member(oop mh);
1058
1059 // Testers
1060 static bool is_subclass(Klass* klass) {
1061 return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass());
1062 }
1063 static bool is_instance(oop obj);
1064
1065 // Accessors for code generation:
1066 static int member_offset() { CHECK_INIT(_member_offset); }
1067 };
1068
1069 // Interface to java.lang.invoke.LambdaForm objects
1070 // (These are a private interface for managing adapter code generation.)
1071
1072 class java_lang_invoke_LambdaForm: AllStatic {
1073 friend class JavaClasses;
1074
1075 private:
1076 static int _vmentry_offset; // type is MemberName
1077
1078 static void compute_offsets();
1079
1080 public:
1081 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1082
1083 // Accessors
1084 static oop vmentry(oop lform);
1085
1086 // Testers
1087 static bool is_subclass(Klass* klass) {
1088 return vmClasses::LambdaForm_klass() != nullptr &&
1089 klass->is_subclass_of(vmClasses::LambdaForm_klass());
1090 }
1091 static bool is_instance(oop obj);
1092
1093 // Accessors for code generation:
1094 static int vmentry_offset() { CHECK_INIT(_vmentry_offset); }
1095 };
1096
1097 // Interface to java.lang.invoke.NativeEntryPoint objects
1098 // (These are a private interface for managing adapter code generation.)
1099
1100 class jdk_internal_foreign_abi_NativeEntryPoint: AllStatic {
1101 friend class JavaClasses;
1102
1103 private:
1104 static int _method_type_offset;
1105 static int _downcall_stub_address_offset;
1106
1107 static void compute_offsets();
1108
1109 public:
1110 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1111
1112 // Accessors
1113 static oop method_type(oop entry);
1114 static jlong downcall_stub_address(oop entry);
1115
1116 // Testers
1117 static bool is_subclass(Klass* klass) {
1118 return vmClasses::NativeEntryPoint_klass() != nullptr &&
1119 klass->is_subclass_of(vmClasses::NativeEntryPoint_klass());
1120 }
1121 static bool is_instance(oop obj);
1122
1123 // Accessors for code generation:
1124 static int method_type_offset_in_bytes() { return _method_type_offset; }
1125 static int downcall_stub_address_offset_in_bytes() { return _downcall_stub_address_offset; }
1126 };
1127
1128 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic {
1129 friend class JavaClasses;
1130
1131 private:
1132 static int _inputStorage_offset;
1133 static int _outputStorage_offset;
1134 static int _volatileStorage_offset;
1135 static int _stackAlignment_offset;
1136 static int _shadowSpace_offset;
1137 static int _scratch1_offset;
1138 static int _scratch2_offset;
1139
1140 static void compute_offsets();
1141
1142 public:
1143 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1144
1145 // Accessors
1146 static objArrayOop inputStorage(oop entry);
1147 static objArrayOop outputStorage(oop entry);
1148 static objArrayOop volatileStorage(oop entry);
1149 static jint stackAlignment(oop entry);
1150 static jint shadowSpace(oop entry);
1151 static oop scratch1(oop entry);
1152 static oop scratch2(oop entry);
1153
1154 // Testers
1155 static bool is_subclass(Klass* klass) {
1156 return vmClasses::ABIDescriptor_klass() != nullptr &&
1157 klass->is_subclass_of(vmClasses::ABIDescriptor_klass());
1158 }
1159 static bool is_instance(oop obj);
1160 };
1161
1162 class jdk_internal_foreign_abi_VMStorage: AllStatic {
1163 friend class JavaClasses;
1164
1165 private:
1166 static int _type_offset;
1167 static int _indexOrOffset_offset;
1168 static int _segmentMaskOrSize_offset;
1169 static int _debugName_offset;
1170
1171 static void compute_offsets();
1172
1173 public:
1174 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1175
1176 // Accessors
1177 static jbyte type(oop entry);
1178 static jint index_or_offset(oop entry);
1179 static jshort segment_mask_or_size(oop entry);
1180 static oop debugName(oop entry);
1181
1182 // Testers
1183 static bool is_subclass(Klass* klass) {
1184 return vmClasses::VMStorage_klass() != nullptr &&
1185 klass->is_subclass_of(vmClasses::VMStorage_klass());
1186 }
1187 static bool is_instance(oop obj);
1188 };
1189
1190 class jdk_internal_foreign_abi_CallConv: AllStatic {
1191 friend class JavaClasses;
1192
1193 private:
1194 static int _argRegs_offset;
1195 static int _retRegs_offset;
1196
1197 static void compute_offsets();
1198
1199 public:
1200 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1201
1202 // Accessors
1203 static objArrayOop argRegs(oop entry);
1204 static objArrayOop retRegs(oop entry);
1205
1206 // Testers
1207 static bool is_subclass(Klass* klass) {
1208 return vmClasses::CallConv_klass() != nullptr &&
1209 klass->is_subclass_of(vmClasses::CallConv_klass());
1210 }
1211 static bool is_instance(oop obj);
1212 };
1213
1214 // Interface to java.lang.invoke.MemberName objects
1215 // (These are a private interface for Java code to query the class hierarchy.)
1216
1217 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1218 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1219
1220 class java_lang_invoke_ResolvedMethodName : AllStatic {
1221 friend class JavaClasses;
1222
1223 static int _vmtarget_offset;
1224 static int _vmholder_offset;
1225
1226 static void compute_offsets();
1227 public:
1228 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1229
1230 static int vmtarget_offset() { CHECK_INIT(_vmtarget_offset); }
1231
1232 static Method* vmtarget(oop resolved_method);
1233 static void set_vmtarget(oop resolved_method, Method* method);
1234
1235 static void set_vmholder(oop resolved_method, oop holder);
1236
1237 // find or create resolved member name
1238 static oop find_resolved_method(const methodHandle& m, TRAPS);
1239
1240 static bool is_instance(oop resolved_method);
1241 };
1242
1243
1244 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1245 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1246
1247
1248 class java_lang_invoke_MemberName: AllStatic {
1249 friend class JavaClasses;
1250
1251 private:
1252 // From java.lang.invoke.MemberName:
1253 // private Class<?> clazz; // class in which the method is defined
1254 // private String name; // may be null if not yet materialized
1255 // private Object type; // may be null if not yet materialized
1256 // private int flags; // modifier bits; see reflect.Modifier
1257 // private ResolvedMethodName method; // holds VM-specific target value
1258 // private intptr_t vmindex; // member index within class or interface
1259 static int _clazz_offset;
1260 static int _name_offset;
1261 static int _type_offset;
1262 static int _flags_offset;
1263 static int _method_offset;
1264 static int _vmindex_offset;
1265
1266 static void compute_offsets();
1267
1268 public:
1269 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1270 // Accessors
1271 static oop clazz(oop mname);
1272 static void set_clazz(oop mname, oop clazz);
1273
1274 static oop type(oop mname);
1275 static void set_type(oop mname, oop type);
1276
1277 static oop name(oop mname);
1278 static void set_name(oop mname, oop name);
1279
1280 static int flags(oop mname);
1281 static void set_flags(oop mname, int flags);
1282
1283 // Link through ResolvedMethodName field to get Method*
1284 static Method* vmtarget(oop mname);
1285 static void set_method(oop mname, oop method);
1286
1287 static intptr_t vmindex(oop mname);
1288 static void set_vmindex(oop mname, intptr_t index);
1289
1290 // Testers
1291 static bool is_subclass(Klass* klass) {
1292 return klass->is_subclass_of(vmClasses::MemberName_klass());
1293 }
1294 static bool is_instance(oop obj);
1295
1296 static bool is_method(oop obj);
1297
1298 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1299 enum {
1300 MN_IS_METHOD = 0x00010000, // method (not constructor)
1301 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1302 MN_IS_FIELD = 0x00040000, // field
1303 MN_IS_TYPE = 0x00080000, // nested type
1304 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1305 MN_TRUSTED_FINAL = 0x00200000, // trusted final field
1306 MN_HIDDEN_MEMBER = 0x00400000, // @Hidden annotation detected
1307 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1308 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1309 MN_NESTMATE_CLASS = 0x00000001,
1310 MN_HIDDEN_CLASS = 0x00000002,
1311 MN_STRONG_LOADER_LINK = 0x00000004,
1312 MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1313 // Lookup modes
1314 MN_MODULE_MODE = 0x00000010,
1315 MN_UNCONDITIONAL_MODE = 0x00000020,
1316 MN_TRUSTED_MODE = -1
1317 };
1318
1319 // Accessors for code generation:
1320 static int clazz_offset() { CHECK_INIT(_clazz_offset); }
1321 static int type_offset() { CHECK_INIT(_type_offset); }
1322 static int flags_offset() { CHECK_INIT(_flags_offset); }
1323 static int method_offset() { CHECK_INIT(_method_offset); }
1324 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1325 };
1326
1327
1328 // Interface to java.lang.invoke.MethodType objects
1329
1330 class java_lang_invoke_MethodType: AllStatic {
1331 friend class JavaClasses;
1332
1333 private:
1334 static int _rtype_offset;
1335 static int _ptypes_offset;
1336
1337 static void compute_offsets();
1338
1339 public:
1340 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1341 // Accessors
1342 static oop rtype(oop mt);
1343 static objArrayOop ptypes(oop mt);
1344
1345 static oop ptype(oop mt, int index);
1346 static int ptype_count(oop mt);
1347
1348 static int ptype_slot_count(oop mt); // extra counts for long/double
1349 static int rtype_slot_count(oop mt); // extra counts for long/double
1350
1351 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1352 static void print_signature(oop mt, outputStream* st);
1353
1354 static bool is_instance(oop obj);
1355
1356 static bool equals(oop mt1, oop mt2);
1357
1358 // Accessors for code generation:
1359 static int rtype_offset() { CHECK_INIT(_rtype_offset); }
1360 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); }
1361 };
1362
1363
1364 // Interface to java.lang.invoke.CallSite objects
1365
1366 class java_lang_invoke_CallSite: AllStatic {
1367 friend class JavaClasses;
1368
1369 private:
1370 static int _target_offset;
1371 static int _context_offset;
1372
1373 static void compute_offsets();
1374
1375 public:
1376 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1377 // Accessors
1378 static oop target( oop site);
1379 static void set_target( oop site, oop target);
1380 static void set_target_volatile( oop site, oop target);
1381
1382 static oop context_no_keepalive(oop site);
1383
1384 // Testers
1385 static bool is_subclass(Klass* klass) {
1386 return klass->is_subclass_of(vmClasses::CallSite_klass());
1387 }
1388 static bool is_instance(oop obj);
1389
1390 // Accessors for code generation:
1391 static int target_offset() { CHECK_INIT(_target_offset); }
1392 static int context_offset() { CHECK_INIT(_context_offset); }
1393 };
1394
1395 // Interface to java.lang.invoke.ConstantCallSite objects
1396
1397 class java_lang_invoke_ConstantCallSite: AllStatic {
1398 friend class JavaClasses;
1399
1400 private:
1401 static int _is_frozen_offset;
1402
1403 static void compute_offsets();
1404
1405 public:
1406 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1407 // Accessors
1408 static jboolean is_frozen(oop site);
1409
1410 // Testers
1411 static bool is_subclass(Klass* klass) {
1412 return klass->is_subclass_of(vmClasses::ConstantCallSite_klass());
1413 }
1414 static bool is_instance(oop obj);
1415 };
1416
1417 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1418
1419 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1420 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1421 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1422
1423 class DependencyContext;
1424
1425 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1426 friend class JavaClasses;
1427
1428 private:
1429 static int _vmdependencies_offset;
1430 static int _last_cleanup_offset;
1431
1432 static void compute_offsets();
1433
1434 public:
1435 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1436 // Accessors
1437 static DependencyContext vmdependencies(oop context);
1438
1439 // Testers
1440 static bool is_subclass(Klass* klass) {
1441 return klass->is_subclass_of(vmClasses::Context_klass());
1442 }
1443 static bool is_instance(oop obj);
1444 };
1445
1446 // Interface to java.security.AccessControlContext objects
1447
1448 class java_security_AccessControlContext: AllStatic {
1449 private:
1450 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1451 // so we compute the offsets at startup rather than hard-wiring them.
1452 static int _context_offset;
1453 static int _privilegedContext_offset;
1454 static int _isPrivileged_offset;
1455 static int _isAuthorized_offset;
1456
1457 static void compute_offsets();
1458 public:
1459 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1460 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1461
1462 // Debugging/initialization
1463 friend class JavaClasses;
1464 };
1465
1466
1467 // Interface to java.lang.ClassLoader objects
1468
1469 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1470 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1471
1472 class java_lang_ClassLoader : AllStatic {
1473 private:
1474 static int _loader_data_offset;
1475 static int _parent_offset;
1476 static int _parallelCapable_offset;
1477 static int _name_offset;
1478 static int _nameAndId_offset;
1479 static int _unnamedModule_offset;
1480
1481 static void compute_offsets();
1482
1483 public:
1484 // Support for CDS
1485 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1486 static int loader_data_offset() { return _loader_data_offset; }
1487
1488 static ClassLoaderData* loader_data_acquire(oop loader);
1489 static ClassLoaderData* loader_data(oop loader);
1490 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1491
1492 static oop parent(oop loader);
1493 static oop parent_no_keepalive(oop loader);
1494 static oop name(oop loader);
1495 static oop nameAndId(oop loader);
1496 static bool isAncestor(oop loader, oop cl);
1497
1498 // Support for parallelCapable field
1499 static bool parallelCapable(oop the_class_mirror);
1500
1501 static bool is_trusted_loader(oop loader);
1502
1503 // Return true if this is one of the class loaders associated with
1504 // the generated bytecodes for serialization constructor returned
1505 // by sun.reflect.ReflectionFactory::newConstructorForSerialization
1506 static bool is_reflection_class_loader(oop loader);
1507
1508 // Fix for 4474172
1509 static oop non_reflection_class_loader(oop loader);
1510
1511 // Testers
1512 static bool is_subclass(Klass* klass) {
1513 return klass->is_subclass_of(vmClasses::ClassLoader_klass());
1514 }
1515 static bool is_instance(oop obj);
1516
1517 static oop unnamedModule(oop loader);
1518
1519 // Debugging
1520 friend class JavaClasses;
1521 };
1522
1523
1524 // Interface to java.lang.System objects
1525
1526 class java_lang_System : AllStatic {
1527 private:
1528 static int _static_in_offset;
1529 static int _static_out_offset;
1530 static int _static_err_offset;
1531 static int _static_security_offset;
1532 static int _static_allow_security_offset;
1533 static int _static_never_offset;
1534
1535 public:
1536 static int in_offset() { CHECK_INIT(_static_in_offset); }
1537 static int out_offset() { CHECK_INIT(_static_out_offset); }
1538 static int err_offset() { CHECK_INIT(_static_err_offset); }
1539 static bool allow_security_manager();
1540 static bool has_security_manager();
1541
1542 static void compute_offsets();
1543 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1544
1545 // Debugging
1546 friend class JavaClasses;
1547 };
1548
1549
1550 // Interface to java.lang.StackTraceElement objects
1551
1552 class java_lang_StackTraceElement: AllStatic {
1553 private:
1554 static int _declaringClassObject_offset;
1555 static int _classLoaderName_offset;
1556 static int _moduleName_offset;
1557 static int _moduleVersion_offset;
1558 static int _declaringClass_offset;
1559 static int _methodName_offset;
1560 static int _fileName_offset;
1561 static int _lineNumber_offset;
1562
1563 // Setters
1564 static void set_classLoaderName(oop element, oop value);
1565 static void set_moduleName(oop element, oop value);
1566 static void set_moduleVersion(oop element, oop value);
1567 static void set_declaringClass(oop element, oop value);
1568 static void set_methodName(oop element, oop value);
1569 static void set_fileName(oop element, oop value);
1570 static void set_lineNumber(oop element, int value);
1571 static void set_declaringClassObject(oop element, oop value);
1572
1573 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1574 const methodHandle& method, int bci,
1575 Symbol*& source, oop& source_file, int& line_number, TRAPS);
1576
1577 public:
1578 // Create an instance of StackTraceElement
1579 static oop create(const methodHandle& method, int bci, TRAPS);
1580
1581 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1582 int version, int bci, Symbol* name, TRAPS);
1583
1584 static void compute_offsets();
1585 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1586
1587 #if INCLUDE_JVMCI
1588 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1589 #endif
1590
1591 // Debugging
1592 friend class JavaClasses;
1593 };
1594
1595
1596 class Backtrace: AllStatic {
1597 public:
1598 // Helper backtrace functions to store bci|version together.
1599 static int merge_bci_and_version(int bci, int version);
1600 static int merge_mid_and_cpref(int mid, int cpref);
1601 static int bci_at(unsigned int merged);
1602 static int version_at(unsigned int merged);
1603 static int mid_at(unsigned int merged);
1604 static int cpref_at(unsigned int merged);
1605 static int get_line_number(Method* method, int bci);
1606 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1607
1608 // Debugging
1609 friend class JavaClasses;
1610 };
1611
1612 class java_lang_ClassFrameInfo: AllStatic {
1613 private:
1614 static int _classOrMemberName_offset;
1615 static int _flags_offset;
1616
1617 public:
1618 static oop classOrMemberName(oop info);
1619 static int flags(oop info);
1620
1621 // Setters
1622 static void init_class(Handle stackFrame, const methodHandle& m);
1623 static void init_method(Handle stackFrame, const methodHandle& m, TRAPS);
1624
1625 static void compute_offsets();
1626 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1627
1628 // Debugging
1629 friend class JavaClasses;
1630 };
1631
1632 // Interface to java.lang.StackFrameInfo objects
1633
1634 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1635 macro(java_lang_StackFrameInfo, version, short_signature, false)
1636
1637 class java_lang_StackFrameInfo: AllStatic {
1638 private:
1639 static int _type_offset;
1640 static int _name_offset;
1641 static int _bci_offset;
1642 static int _version_offset;
1643 static int _contScope_offset;
1644
1645 public:
1646 // Getters
1647 static oop name(oop info);
1648 static oop type(oop info);
1649 static Method* get_method(oop info);
1650
1651 // Setters
1652 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS);
1653 static void set_name(oop info, oop value);
1654 static void set_type(oop info, oop value);
1655 static void set_bci(oop info, int value);
1656
1657 static void set_version(oop info, short value);
1658 static void set_contScope(oop info, oop value);
1659
1660 static void compute_offsets();
1661 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1662
1663 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1664
1665 // Debugging
1666 friend class JavaClasses;
1667 };
1668
1669 class java_lang_LiveStackFrameInfo: AllStatic {
1670 private:
1671 static int _monitors_offset;
1672 static int _locals_offset;
1673 static int _operands_offset;
1674 static int _mode_offset;
1675
1676 public:
1677 static void set_monitors(oop info, oop value);
1678 static void set_locals(oop info, oop value);
1679 static void set_operands(oop info, oop value);
1680 static void set_mode(oop info, int value);
1681
1682 static void compute_offsets();
1683 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1684
1685 // Debugging
1686 friend class JavaClasses;
1687 };
1688
1689 // Interface to java.lang.reflect.RecordComponent objects
1690
1691 class java_lang_reflect_RecordComponent: AllStatic {
1692 private:
1693 static int _clazz_offset;
1694 static int _name_offset;
1695 static int _type_offset;
1696 static int _accessor_offset;
1697 static int _signature_offset;
1698 static int _annotations_offset;
1699 static int _typeAnnotations_offset;
1700
1701 // Setters
1702 static void set_clazz(oop element, oop value);
1703 static void set_name(oop element, oop value);
1704 static void set_type(oop element, oop value);
1705 static void set_accessor(oop element, oop value);
1706 static void set_signature(oop element, oop value);
1707 static void set_annotations(oop element, oop value);
1708 static void set_typeAnnotations(oop element, oop value);
1709
1710 public:
1711 // Create an instance of RecordComponent
1712 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1713
1714 static void compute_offsets();
1715 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1716
1717 // Debugging
1718 friend class JavaClasses;
1719 };
1720
1721
1722 // Interface to java.lang.AssertionStatusDirectives objects
1723
1724 class java_lang_AssertionStatusDirectives: AllStatic {
1725 private:
1726 static int _classes_offset;
1727 static int _classEnabled_offset;
1728 static int _packages_offset;
1729 static int _packageEnabled_offset;
1730 static int _deflt_offset;
1731
1732 public:
1733 // Setters
1734 static void set_classes(oop obj, oop val);
1735 static void set_classEnabled(oop obj, oop val);
1736 static void set_packages(oop obj, oop val);
1737 static void set_packageEnabled(oop obj, oop val);
1738 static void set_deflt(oop obj, bool val);
1739
1740 static void compute_offsets();
1741 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1742
1743 // Debugging
1744 friend class JavaClasses;
1745 };
1746
1747
1748 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1749 private:
1750 static int _owner_offset;
1751 public:
1752 static void compute_offsets();
1753 static oop get_owner_threadObj(oop obj);
1754 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1755 };
1756
1757 // Interface to jdk.internal.misc.UnsafeConsants
1758
1759 class jdk_internal_misc_UnsafeConstants : AllStatic {
1760 public:
1761 static void set_unsafe_constants();
1762 static void compute_offsets() { }
1763 static void serialize_offsets(SerializeClosure* f) { }
1764 };
1765
1766 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects
1767
1768 class vector_VectorPayload : AllStatic {
1769 private:
1770 static int _payload_offset;
1771 public:
1772 static void set_payload(oop o, oop val);
1773
1774 static void compute_offsets();
1775 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1776
1777 // Testers
1778 static bool is_subclass(Klass* klass) {
1779 return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass());
1780 }
1781 static bool is_instance(oop obj);
1782 };
1783
1784 class java_lang_Integer : AllStatic {
1785 public:
1786 static jint value(oop obj);
1787 };
1788
1789 class java_lang_Long : AllStatic {
1790 public:
1791 static jlong value(oop obj);
1792 };
1793
1794 class java_lang_Character : AllStatic {
1795 public:
1796 static jchar value(oop obj);
1797 };
1798
1799 class java_lang_Short : AllStatic {
1800 public:
1801 static jshort value(oop obj);
1802 };
1803
1804 class java_lang_Byte : AllStatic {
1805 public:
1806 static jbyte value(oop obj);
1807 };
1808
1809 class java_lang_Boolean : AllStatic {
1810 private:
1811 static int _static_TRUE_offset;
1812 static int _static_FALSE_offset;
1813 public:
1814 static Symbol* symbol();
1815 static void compute_offsets(InstanceKlass* k);
1816 static oop get_TRUE(InstanceKlass *k);
1817 static oop get_FALSE(InstanceKlass *k);
1818 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1819 static jboolean value(oop obj);
1820 };
1821
1822 class java_lang_Integer_IntegerCache : AllStatic {
1823 private:
1824 static int _static_cache_offset;
1825 public:
1826 static Symbol* symbol();
1827 static void compute_offsets(InstanceKlass* k);
1828 static objArrayOop cache(InstanceKlass *k);
1829 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1830 };
1831
1832 class java_lang_Long_LongCache : AllStatic {
1833 private:
1834 static int _static_cache_offset;
1835 public:
1836 static Symbol* symbol();
1837 static void compute_offsets(InstanceKlass* k);
1838 static objArrayOop cache(InstanceKlass *k);
1839 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1840 };
1841
1842 class java_lang_Character_CharacterCache : AllStatic {
1843 private:
1844 static int _static_cache_offset;
1845 public:
1846 static Symbol* symbol();
1847 static void compute_offsets(InstanceKlass* k);
1848 static objArrayOop cache(InstanceKlass *k);
1849 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1850 };
1851
1852 class java_lang_Short_ShortCache : AllStatic {
1853 private:
1854 static int _static_cache_offset;
1855 public:
1856 static Symbol* symbol();
1857 static void compute_offsets(InstanceKlass* k);
1858 static objArrayOop cache(InstanceKlass *k);
1859 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1860 };
1861
1862 class java_lang_Byte_ByteCache : AllStatic {
1863 private:
1864 static int _static_cache_offset;
1865 public:
1866 static Symbol* symbol();
1867 static void compute_offsets(InstanceKlass* k);
1868 static objArrayOop cache(InstanceKlass *k);
1869 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1870 };
1871
1872
1873 // Interface to java.lang.InternalError objects
1874
1875 #define INTERNALERROR_INJECTED_FIELDS(macro) \
1876 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1877
1878 class java_lang_InternalError : AllStatic {
1879 private:
1880 static int _during_unsafe_access_offset;
1881 public:
1882 static jboolean during_unsafe_access(oop internal_error);
1883 static void set_during_unsafe_access(oop internal_error);
1884 static void compute_offsets();
1885 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1886 };
1887
1888 // Use to declare fields that need to be injected into Java classes
1889 // for the JVM to use. The name_index and signature_index are
1890 // declared in vmSymbols. The may_be_java flag is used to declare
1891 // fields that might already exist in Java but should be injected if
1892 // they don't. Otherwise the field is unconditionally injected and
1893 // the JVM uses the injected one. This is to ensure that name
1894 // collisions don't occur. In general may_be_java should be false
1895 // unless there's a good reason.
1896
1897 class InjectedField {
1898 public:
1899 const vmClassID klass_id;
1900 const vmSymbolID name_index;
1901 const vmSymbolID signature_index;
1902 const bool may_be_java;
1903
1904
1905 Klass* klass() const { return vmClasses::klass_at(klass_id); }
1906 Symbol* name() const { return lookup_symbol(name_index); }
1907 Symbol* signature() const { return lookup_symbol(signature_index); }
1908
1909 int compute_offset();
1910
1911 // Find the Symbol for this index
1912 static Symbol* lookup_symbol(vmSymbolID symbol_index) {
1913 return Symbol::vm_symbol_at(symbol_index);
1914 }
1915 };
1916
1917
1918 // Interface to hard-coded offset checking
1919
1920 enum class InjectedFieldID : int;
1921
1922 class JavaClasses : AllStatic {
1923 private:
1924
1925 static InjectedField _injected_fields[];
1926
1927 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1928 public:
1929
1930 static int compute_injected_offset(InjectedFieldID id);
1931
1932 static void compute_offsets();
1933 static void check_offsets() PRODUCT_RETURN;
1934 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1935 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1936 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1937
1938 static void compute_offset(int &dest_offset,
1939 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
1940 bool is_static = false);
1941 static void compute_offset(int& dest_offset, InstanceKlass* ik,
1942 const char* name_string, Symbol* signature_symbol,
1943 bool is_static = false);
1944 };
1945
1946 #undef CHECK_INIT
1947
1948 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP