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_raw(oop string, typeArrayOop buffer);
111 static inline void set_value(oop string, typeArrayOop buffer);
112
113 // Set the deduplication_forbidden flag true. This flag is sticky; once
114 // set it never gets cleared. This is set when a String is interned in
115 // the StringTable, to prevent string deduplication from changing the
116 // String's value array.
117 static inline void set_deduplication_forbidden(oop java_string);
118
119 // Test and set the deduplication_requested flag. Returns the old value
120 // of the flag. This flag is sticky; once set it never gets cleared.
121 // Some GCs may use this flag when deciding whether to request
122 // deduplication of a String, to avoid multiple requests for the same
123 // object.
124 static inline bool test_and_set_deduplication_requested(oop java_string);
125
126 // Accessors
127 static inline typeArrayOop value(oop java_string);
128 static inline typeArrayOop value_no_keepalive(oop java_string);
129 static inline bool hash_is_set(oop string);
130 static inline bool is_latin1(oop java_string);
131 static inline bool deduplication_forbidden(oop java_string);
132 static inline bool deduplication_requested(oop java_string);
133 static inline int length(oop java_string);
134 static inline int length(oop java_string, typeArrayOop string_value);
135 static int utf8_length(oop java_string);
136 static int utf8_length(oop java_string, typeArrayOop string_value);
137
138 // String converters
139 static char* as_utf8_string(oop java_string);
140 static char* as_utf8_string(oop java_string, int& length);
141 static char* as_utf8_string_full(oop java_string, char* buf, int buflen, int& length);
142 static char* as_utf8_string(oop java_string, char* buf, int buflen);
143 static char* as_utf8_string(oop java_string, int start, int len);
144 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
145 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
146 static char* as_platform_dependent_str(Handle java_string, TRAPS);
147 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
148 static jchar* as_unicode_string_or_null(oop java_string, int& length);
149 // produce an ascii string with all other values quoted using \u####
150 static char* as_quoted_ascii(oop java_string);
151
152 // Compute the hash value for a java.lang.String object which would
153 // contain the characters passed in.
154 //
155 // As the hash value used by the String object itself, in
156 // String.hashCode(). This value is normally calculated in Java code
157 // in the String.hashCode method(), but is precomputed for String
158 // objects in the shared archive file.
159 // hash P(31) from Kernighan & Ritchie
160 //
161 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
162 static unsigned int hash_code(const jchar* s, int len) {
163 unsigned int h = 0;
164 while (len-- > 0) {
165 h = 31*h + (unsigned int) *s;
166 s++;
167 }
168 return h;
169 }
170
171 static unsigned int hash_code(const jbyte* s, int len) {
172 unsigned int h = 0;
173 while (len-- > 0) {
174 h = 31*h + (((unsigned int) *s) & 0xFF);
175 s++;
176 }
177 return h;
178 }
179
180 static unsigned int hash_code(oop java_string);
181 static unsigned int hash_code_noupdate(oop java_string);
182
183 static bool equals(oop java_string, const jchar* chars, int len);
184 static bool equals(oop str1, oop str2);
185 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
186
187 // Conversion between '.' and '/' formats, and allocate a String from the result.
188 static Handle externalize_classname(Symbol* java_name, TRAPS);
189
190 // Conversion
191 static Symbol* as_symbol(oop java_string);
192 static Symbol* as_symbol_or_null(oop java_string);
193
194 // Tester
195 static inline bool is_instance(oop obj);
196
197 // Debugging
198 static void print(oop java_string, outputStream* st);
199 friend class JavaClasses;
200 friend class StringTable;
201 };
202
203
204 // Interface to java.lang.Class objects
205
206 #define CLASS_INJECTED_FIELDS(macro) \
207 macro(java_lang_Class, klass, intptr_signature, false) \
208 macro(java_lang_Class, array_klass, intptr_signature, false) \
209 macro(java_lang_Class, oop_size, int_signature, false) \
210 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
211 macro(java_lang_Class, protection_domain, object_signature, false) \
212 macro(java_lang_Class, signers, object_signature, false) \
213 macro(java_lang_Class, source_file, object_signature, false) \
214
215 class java_lang_Class : AllStatic {
216 friend class VMStructs;
217 friend class JVMCIVMStructs;
218
219 private:
220
221 // The fake offsets are added by the class loader when java.lang.Class is loaded
222
223 static int _klass_offset;
224 static int _array_klass_offset;
225
226 static int _oop_size_offset;
227 static int _static_oop_field_count_offset;
228
229 static int _protection_domain_offset;
230 static int _signers_offset;
231 static int _class_loader_offset;
232 static int _module_offset;
233 static int _component_mirror_offset;
234 static int _primary_mirror_offset;
235 static int _secondary_mirror_offset;
236
237 static int _name_offset;
238 static int _source_file_offset;
239 static int _classData_offset;
240 static int _classRedefinedCount_offset;
241
242 static bool _offsets_computed;
243
244 static GrowableArray<Klass*>* _fixup_mirror_list;
245 static GrowableArray<Klass*>* _fixup_module_field_list;
246
247 static void set_protection_domain(oop java_class, oop protection_domain);
248 static void set_class_loader(oop java_class, oop class_loader);
249 static void set_component_mirror(oop java_class, oop comp_mirror);
250 static void set_primary_mirror(oop java_class, oop comp_mirror);
251 static void set_secondary_mirror(oop java_class, oop comp_mirror);
252
253 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
254 Handle classData, TRAPS);
255 static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
256 public:
257 static void allocate_fixup_lists();
258 static void compute_offsets();
259
260 // Instance creation
261 static void allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
262 Handle& mirror, Handle& comp_mirror, TRAPS); // returns mirror and comp_mirror
263 static void create_mirror(Klass* k, Handle class_loader, Handle module,
264 Handle protection_domain, Handle classData, TRAPS);
265 static void fixup_mirror(Klass* k, TRAPS);
266 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
267 static oop create_secondary_mirror(Klass* k, Handle mirror, 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 static int primary_mirror_offset() { CHECK_INIT(_primary_mirror_offset); }
299 static int secondary_mirror_offset() { CHECK_INIT(_secondary_mirror_offset); }
300 // Support for classRedefinedCount field
301 static int classRedefinedCount(oop the_class_mirror);
302 static void set_classRedefinedCount(oop the_class_mirror, int value);
303
304 // Support for embedded per-class oops
305 static oop protection_domain(oop java_class);
306 static oop component_mirror(oop java_class);
307 static oop primary_mirror(oop java_class);
308 static oop secondary_mirror(oop java_class);
309 static bool is_primary_mirror(oop java_class);
310 static bool is_secondary_mirror(oop java_class);
311
312 static objArrayOop signers(oop java_class);
313 static void set_signers(oop java_class, objArrayOop signers);
314 static oop class_data(oop java_class);
315 static void set_class_data(oop java_class, oop classData);
316
317 static oop class_loader(oop java_class);
318 static void set_module(oop java_class, oop module);
319 static oop module(oop java_class);
320
321 static oop name(Handle java_class, TRAPS);
322
323 static oop source_file(oop java_class);
324 static void set_source_file(oop java_class, oop source_file);
325
326 static size_t oop_size(oop java_class);
327 static void set_oop_size(HeapWord* java_class, size_t size);
328 static int static_oop_field_count(oop java_class);
329 static void set_static_oop_field_count(oop java_class, int size);
330
331 static GrowableArray<Klass*>* fixup_mirror_list() {
332 return _fixup_mirror_list;
333 }
334 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
335 _fixup_mirror_list = v;
336 }
337
338 static GrowableArray<Klass*>* fixup_module_field_list() {
339 return _fixup_module_field_list;
340 }
341 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
342 _fixup_module_field_list = v;
343 }
344
345 // Debugging
346 friend class JavaClasses;
347 };
348
349 // Interface to java.lang.Thread objects
350
351 #define THREAD_INJECTED_FIELDS(macro) \
352 macro(java_lang_Thread, jvmti_thread_state, intptr_signature, false) \
353 macro(java_lang_Thread, jvmti_VTMS_transition_disable_count, int_signature, false) \
354 macro(java_lang_Thread, jvmti_is_in_VTMS_transition, bool_signature, false) \
355 JFR_ONLY(macro(java_lang_Thread, jfr_epoch, short_signature, false))
356
357 class java_lang_Thread : AllStatic {
358 friend class java_lang_VirtualThread;
359 friend class JVMCIVMStructs;
360 private:
361 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
362 // so we compute the offsets at startup rather than hard-wiring them.
363 static int _holder_offset;
364 static int _name_offset;
365 static int _contextClassLoader_offset;
366 static int _inheritedAccessControlContext_offset;
367 static int _eetop_offset;
368 static int _jvmti_thread_state_offset;
369 static int _jvmti_VTMS_transition_disable_count_offset;
370 static int _jvmti_is_in_VTMS_transition_offset;
371 static int _interrupted_offset;
372 static int _tid_offset;
373 static int _continuation_offset;
374 static int _park_blocker_offset;
375 static int _scopedValueBindings_offset;
376 JFR_ONLY(static int _jfr_epoch_offset;)
377
378 static void compute_offsets();
379
380 public:
381 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
382
383 // Returns the JavaThread associated with the thread obj
384 static JavaThread* thread(oop java_thread);
385 static JavaThread* thread_acquire(oop java_thread);
386 // Set JavaThread for instance
387 static void set_thread(oop java_thread, JavaThread* thread);
388 static void release_set_thread(oop java_thread, JavaThread* thread);
389 // FieldHolder
390 static oop holder(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 RUNNABLE = 2,
541 RUNNING = 3,
542 PARKING = 4,
543 PARKED = 5,
544 PINNED = 6,
545 YIELDING = 7,
546 TERMINATED = 99,
547
548 // can be suspended from scheduling when unmounted
549 SUSPENDED = 1 << 8,
550 RUNNABLE_SUSPENDED = (RUNNABLE | SUSPENDED),
551 PARKED_SUSPENDED = (PARKED | SUSPENDED)
552 };
553
554 static void compute_offsets();
555 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
556
557 // Testers
558 static bool is_subclass(Klass* klass) {
559 return klass->is_subclass_of(vmClasses::VirtualThread_klass());
560 }
561 static bool is_instance(oop obj);
562
563 static oop vthread_scope();
564 static oop carrier_thread(oop vthread);
565 static oop continuation(oop vthread);
566 static int state(oop vthread);
567 static JavaThreadStatus map_state_to_thread_status(int state);
568 };
569
570
571 // Interface to java.lang.Throwable objects
572
573 class java_lang_Throwable: AllStatic {
574 friend class BacktraceBuilder;
575 friend class BacktraceIterator;
576
577 private:
578 // Trace constants
579 enum {
580 trace_methods_offset = 0,
581 trace_bcis_offset = 1,
582 trace_mirrors_offset = 2,
583 trace_names_offset = 3,
584 trace_conts_offset = 4,
585 trace_next_offset = 5,
586 trace_hidden_offset = 6,
587 trace_size = 7,
588 trace_chunk_size = 32
589 };
590
591 static int _backtrace_offset;
592 static int _detailMessage_offset;
593 static int _stackTrace_offset;
594 static int _depth_offset;
595 static int _cause_offset;
596 static int _static_unassigned_stacktrace_offset;
597
598 // StackTrace (programmatic access, new since 1.4)
599 static void clear_stacktrace(oop throwable);
600 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
601 static void set_stacktrace(oop throwable, oop st_element_array);
602 static oop unassigned_stacktrace();
603
604 public:
605 // Backtrace
606 static oop backtrace(oop throwable);
607 static void set_backtrace(oop throwable, oop value);
608 static int depth(oop throwable);
609 static void set_depth(oop throwable, int value);
610 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
611 // Message
612 static oop message(oop throwable);
613 static oop cause(oop throwable);
614 static void set_message(oop throwable, oop value);
615 static Symbol* detail_message(oop throwable);
616 static void print_stack_element(outputStream *st, Method* method, int bci);
617
618 static void compute_offsets();
619 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
620
621 // Allocate space for backtrace (created but stack trace not filled in)
622 static void allocate_backtrace(Handle throwable, TRAPS);
623 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
624 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
625 // Fill in current stack trace, can cause GC
626 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
627 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
628
629 // Programmatic access to stack trace
630 static void get_stack_trace_elements(int depth, Handle backtrace, objArrayHandle stack_trace, TRAPS);
631
632 // For recreating class initialization error exceptions.
633 static Handle create_initialization_error(JavaThread* current, Handle throwable);
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 static oop name(oop module);
869 static void set_name(oop module, oop value);
870
871 static ModuleEntry* module_entry(oop module);
872 static ModuleEntry* module_entry_raw(oop module);
873 static void set_module_entry(oop module, ModuleEntry* module_entry);
874
875 friend class JavaClasses;
876 };
877
878 // Interface to jdk.internal.reflect.ConstantPool objects
879 class reflect_ConstantPool {
880 private:
881 // Note that to reduce dependencies on the JDK we compute these
882 // offsets at run-time.
883 static int _oop_offset;
884
885 static void compute_offsets();
886
887 public:
888 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
889
890 // Allocation
891 static Handle create(TRAPS);
892
893 // Accessors
894 static void set_cp(oop reflect, ConstantPool* value);
895 static int oop_offset() { CHECK_INIT(_oop_offset); }
896
897 static ConstantPool* get_cp(oop reflect);
898
899 // Debugging
900 friend class JavaClasses;
901 };
902
903
904 // Interface to java.lang primitive type boxing objects:
905 // - java.lang.Boolean
906 // - java.lang.Character
907 // - java.lang.Float
908 // - java.lang.Double
909 // - java.lang.Byte
910 // - java.lang.Short
911 // - java.lang.Integer
912 // - java.lang.Long
913
914 // This could be separated out into 8 individual classes.
915
916 class java_lang_boxing_object: AllStatic {
917 private:
918 static int _value_offset;
919 static int _long_value_offset;
920
921 static void compute_offsets();
922 static oop initialize_and_allocate(BasicType type, TRAPS);
923 public:
924 // Allocation. Returns a boxed value, or null for invalid type.
925 static oop create(BasicType type, jvalue* value, TRAPS);
926 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
927 static BasicType get_value(oop box, jvalue* value);
928 static BasicType set_value(oop box, jvalue* value);
929 static BasicType basic_type(oop box);
930 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
931 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
932 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
933 static void print(BasicType type, jvalue* value, outputStream* st);
934
935 static int value_offset(BasicType type) {
936 return is_double_word_type(type) ? _long_value_offset : _value_offset;
937 }
938
939 static void serialize_offsets(SerializeClosure* f);
940
941 // Debugging
942 friend class JavaClasses;
943 };
944
945
946
947 // Interface to java.lang.ref.Reference objects
948
949 class java_lang_ref_Reference: AllStatic {
950 static int _referent_offset;
951 static int _queue_offset;
952 static int _next_offset;
953 static int _discovered_offset;
954
955 static bool _offsets_initialized;
956
957 public:
958 // Accessors
959 static inline oop weak_referent_no_keepalive(oop ref);
960 static inline oop weak_referent(oop ref);
961 static inline oop phantom_referent_no_keepalive(oop ref);
962 static inline oop unknown_referent_no_keepalive(oop ref);
963 static inline void clear_referent(oop ref);
964 static inline void clear_referent_raw(oop ref);
965 static inline HeapWord* referent_addr_raw(oop ref);
966 static inline oop next(oop ref);
967 static inline void set_next(oop ref, oop value);
968 static inline void set_next_raw(oop ref, oop value);
969 static inline HeapWord* next_addr_raw(oop ref);
970 static inline oop discovered(oop ref);
971 static inline void set_discovered(oop ref, oop value);
972 static inline void set_discovered_raw(oop ref, oop value);
973 static inline HeapWord* discovered_addr_raw(oop ref);
974 static bool is_referent_field(oop obj, ptrdiff_t offset);
975 static inline bool is_final(oop ref);
976 static inline bool is_phantom(oop ref);
977 static inline bool is_weak(oop ref);
978 static inline bool is_soft(oop ref);
979
980 static int referent_offset() { CHECK_INIT(_referent_offset); }
981 static int queue_offset() { CHECK_INIT(_queue_offset); }
982 static int next_offset() { CHECK_INIT(_next_offset); }
983 static int discovered_offset() { CHECK_INIT(_discovered_offset); }
984
985 static void compute_offsets();
986 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
987 };
988
989
990 // Interface to java.lang.ref.SoftReference objects
991
992 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
993 static int _timestamp_offset;
994 static int _static_clock_offset;
995
996 public:
997 // Accessors
998 static jlong timestamp(oop ref);
999
1000 // Accessors for statics
1001 static jlong clock();
1002 static void set_clock(jlong value);
1003
1004 static void compute_offsets();
1005 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1006 };
1007
1008 // Interface to java.lang.invoke.MethodHandle objects
1009
1010 class java_lang_invoke_MethodHandle: AllStatic {
1011 friend class JavaClasses;
1012
1013 private:
1014 static int _type_offset; // the MethodType of this MH
1015 static int _form_offset; // the LambdaForm of this MH
1016
1017 static void compute_offsets();
1018
1019 public:
1020 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1021
1022 // Accessors
1023 static oop type(oop mh);
1024 static void set_type(oop mh, oop mtype);
1025
1026 static oop form(oop mh);
1027 static void set_form(oop mh, oop lform);
1028
1029 // Testers
1030 static bool is_subclass(Klass* klass) {
1031 return klass->is_subclass_of(vmClasses::MethodHandle_klass());
1032 }
1033 static bool is_instance(oop obj);
1034
1035 // Accessors for code generation:
1036 static int type_offset() { CHECK_INIT(_type_offset); }
1037 static int form_offset() { CHECK_INIT(_form_offset); }
1038 };
1039
1040 // Interface to java.lang.invoke.DirectMethodHandle objects
1041
1042 class java_lang_invoke_DirectMethodHandle: AllStatic {
1043 friend class JavaClasses;
1044
1045 private:
1046 static int _member_offset; // the MemberName of this DMH
1047
1048 static void compute_offsets();
1049
1050 public:
1051 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1052
1053 // Accessors
1054 static oop member(oop mh);
1055
1056 // Testers
1057 static bool is_subclass(Klass* klass) {
1058 return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass());
1059 }
1060 static bool is_instance(oop obj);
1061
1062 // Accessors for code generation:
1063 static int member_offset() { CHECK_INIT(_member_offset); }
1064 };
1065
1066 // Interface to java.lang.invoke.LambdaForm objects
1067 // (These are a private interface for managing adapter code generation.)
1068
1069 class java_lang_invoke_LambdaForm: AllStatic {
1070 friend class JavaClasses;
1071
1072 private:
1073 static int _vmentry_offset; // type is MemberName
1074
1075 static void compute_offsets();
1076
1077 public:
1078 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1079
1080 // Accessors
1081 static oop vmentry(oop lform);
1082
1083 // Testers
1084 static bool is_subclass(Klass* klass) {
1085 return vmClasses::LambdaForm_klass() != nullptr &&
1086 klass->is_subclass_of(vmClasses::LambdaForm_klass());
1087 }
1088 static bool is_instance(oop obj);
1089
1090 // Accessors for code generation:
1091 static int vmentry_offset() { CHECK_INIT(_vmentry_offset); }
1092 };
1093
1094 // Interface to java.lang.invoke.NativeEntryPoint objects
1095 // (These are a private interface for managing adapter code generation.)
1096
1097 class jdk_internal_foreign_abi_NativeEntryPoint: AllStatic {
1098 friend class JavaClasses;
1099
1100 private:
1101 static int _method_type_offset;
1102 static int _downcall_stub_address_offset;
1103
1104 static void compute_offsets();
1105
1106 public:
1107 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1108
1109 // Accessors
1110 static oop method_type(oop entry);
1111 static jlong downcall_stub_address(oop entry);
1112
1113 // Testers
1114 static bool is_subclass(Klass* klass) {
1115 return vmClasses::NativeEntryPoint_klass() != nullptr &&
1116 klass->is_subclass_of(vmClasses::NativeEntryPoint_klass());
1117 }
1118 static bool is_instance(oop obj);
1119
1120 // Accessors for code generation:
1121 static int method_type_offset_in_bytes() { return _method_type_offset; }
1122 static int downcall_stub_address_offset_in_bytes() { return _downcall_stub_address_offset; }
1123 };
1124
1125 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic {
1126 friend class JavaClasses;
1127
1128 private:
1129 static int _inputStorage_offset;
1130 static int _outputStorage_offset;
1131 static int _volatileStorage_offset;
1132 static int _stackAlignment_offset;
1133 static int _shadowSpace_offset;
1134 static int _scratch1_offset;
1135 static int _scratch2_offset;
1136
1137 static void compute_offsets();
1138
1139 public:
1140 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1141
1142 // Accessors
1143 static objArrayOop inputStorage(oop entry);
1144 static objArrayOop outputStorage(oop entry);
1145 static objArrayOop volatileStorage(oop entry);
1146 static jint stackAlignment(oop entry);
1147 static jint shadowSpace(oop entry);
1148 static oop scratch1(oop entry);
1149 static oop scratch2(oop entry);
1150
1151 // Testers
1152 static bool is_subclass(Klass* klass) {
1153 return vmClasses::ABIDescriptor_klass() != nullptr &&
1154 klass->is_subclass_of(vmClasses::ABIDescriptor_klass());
1155 }
1156 static bool is_instance(oop obj);
1157 };
1158
1159 class jdk_internal_foreign_abi_VMStorage: AllStatic {
1160 friend class JavaClasses;
1161
1162 private:
1163 static int _type_offset;
1164 static int _indexOrOffset_offset;
1165 static int _segmentMaskOrSize_offset;
1166 static int _debugName_offset;
1167
1168 static void compute_offsets();
1169
1170 public:
1171 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1172
1173 // Accessors
1174 static jbyte type(oop entry);
1175 static jint index_or_offset(oop entry);
1176 static jshort segment_mask_or_size(oop entry);
1177 static oop debugName(oop entry);
1178
1179 // Testers
1180 static bool is_subclass(Klass* klass) {
1181 return vmClasses::VMStorage_klass() != nullptr &&
1182 klass->is_subclass_of(vmClasses::VMStorage_klass());
1183 }
1184 static bool is_instance(oop obj);
1185 };
1186
1187 class jdk_internal_foreign_abi_CallConv: AllStatic {
1188 friend class JavaClasses;
1189
1190 private:
1191 static int _argRegs_offset;
1192 static int _retRegs_offset;
1193
1194 static void compute_offsets();
1195
1196 public:
1197 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1198
1199 // Accessors
1200 static objArrayOop argRegs(oop entry);
1201 static objArrayOop retRegs(oop entry);
1202
1203 // Testers
1204 static bool is_subclass(Klass* klass) {
1205 return vmClasses::CallConv_klass() != nullptr &&
1206 klass->is_subclass_of(vmClasses::CallConv_klass());
1207 }
1208 static bool is_instance(oop obj);
1209 };
1210
1211 // Interface to java.lang.invoke.MemberName objects
1212 // (These are a private interface for Java code to query the class hierarchy.)
1213
1214 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1215 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1216 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1217
1218 class java_lang_invoke_ResolvedMethodName : AllStatic {
1219 friend class JavaClasses;
1220
1221 static int _vmtarget_offset;
1222 static int _vmholder_offset;
1223
1224 static void compute_offsets();
1225 public:
1226 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1227
1228 static int vmtarget_offset() { CHECK_INIT(_vmtarget_offset); }
1229
1230 static Method* vmtarget(oop resolved_method);
1231 static void set_vmtarget(oop resolved_method, Method* method);
1232
1233 static void set_vmholder(oop resolved_method, oop holder);
1234
1235 // find or create resolved member name
1236 static oop find_resolved_method(const methodHandle& m, TRAPS);
1237
1238 static bool is_instance(oop resolved_method);
1239 };
1240
1241
1242 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1243 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1244
1245
1246 class java_lang_invoke_MemberName: AllStatic {
1247 friend class JavaClasses;
1248
1249 private:
1250 // From java.lang.invoke.MemberName:
1251 // private Class<?> clazz; // class in which the method is defined
1252 // private String name; // may be null if not yet materialized
1253 // private Object type; // may be null if not yet materialized
1254 // private int flags; // modifier bits; see reflect.Modifier
1255 // private ResolvedMethodName method; // holds VM-specific target value
1256 // private intptr_t vmindex; // member index within class or interface
1257 static int _clazz_offset;
1258 static int _name_offset;
1259 static int _type_offset;
1260 static int _flags_offset;
1261 static int _method_offset;
1262 static int _vmindex_offset;
1263
1264 static void compute_offsets();
1265
1266 public:
1267 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1268 // Accessors
1269 static oop clazz(oop mname);
1270 static void set_clazz(oop mname, oop clazz);
1271
1272 static oop type(oop mname);
1273 static void set_type(oop mname, oop type);
1274
1275 static oop name(oop mname);
1276 static void set_name(oop mname, oop name);
1277
1278 static int flags(oop mname);
1279 static void set_flags(oop mname, int flags);
1280
1281 // Link through ResolvedMethodName field to get Method*
1282 static Method* vmtarget(oop mname);
1283 static void set_method(oop mname, oop method);
1284
1285 static intptr_t vmindex(oop mname);
1286 static void set_vmindex(oop mname, intptr_t index);
1287
1288 // Testers
1289 static bool is_subclass(Klass* klass) {
1290 return klass->is_subclass_of(vmClasses::MemberName_klass());
1291 }
1292 static bool is_instance(oop obj);
1293
1294 static bool is_method(oop obj);
1295
1296 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1297 enum {
1298 MN_IS_METHOD = 0x00010000, // method (not constructor)
1299 MN_IS_OBJECT_CONSTRUCTOR = 0x00020000, // constructor
1300 MN_IS_FIELD = 0x00040000, // field
1301 MN_IS_TYPE = 0x00080000, // nested type
1302 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1303 MN_TRUSTED_FINAL = 0x00200000, // trusted final field
1304 MN_FLAT_FIELD = 0x00400000, // flat field
1305 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1306 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1307 MN_NESTMATE_CLASS = 0x00000001,
1308 MN_HIDDEN_CLASS = 0x00000002,
1309 MN_STRONG_LOADER_LINK = 0x00000004,
1310 MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1311 // Lookup modes
1312 MN_MODULE_MODE = 0x00000010,
1313 MN_UNCONDITIONAL_MODE = 0x00000020,
1314 MN_TRUSTED_MODE = -1
1315 };
1316
1317 // Accessors for code generation:
1318 static int clazz_offset() { CHECK_INIT(_clazz_offset); }
1319 static int type_offset() { CHECK_INIT(_type_offset); }
1320 static int flags_offset() { CHECK_INIT(_flags_offset); }
1321 static int method_offset() { CHECK_INIT(_method_offset); }
1322 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1323 };
1324
1325
1326 // Interface to java.lang.invoke.MethodType objects
1327
1328 class java_lang_invoke_MethodType: AllStatic {
1329 friend class JavaClasses;
1330
1331 private:
1332 static int _rtype_offset;
1333 static int _ptypes_offset;
1334
1335 static void compute_offsets();
1336
1337 public:
1338 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1339 // Accessors
1340 static oop rtype(oop mt);
1341 static objArrayOop ptypes(oop mt);
1342
1343 static oop ptype(oop mt, int index);
1344 static int ptype_count(oop mt);
1345
1346 static int ptype_slot_count(oop mt); // extra counts for long/double
1347 static int rtype_slot_count(oop mt); // extra counts for long/double
1348
1349 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1350 static void print_signature(oop mt, outputStream* st);
1351
1352 static bool is_instance(oop obj);
1353
1354 static bool equals(oop mt1, oop mt2);
1355
1356 // Accessors for code generation:
1357 static int rtype_offset() { CHECK_INIT(_rtype_offset); }
1358 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); }
1359 };
1360
1361
1362 // Interface to java.lang.invoke.CallSite objects
1363
1364 class java_lang_invoke_CallSite: AllStatic {
1365 friend class JavaClasses;
1366
1367 private:
1368 static int _target_offset;
1369 static int _context_offset;
1370
1371 static void compute_offsets();
1372
1373 public:
1374 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1375 // Accessors
1376 static oop target( oop site);
1377 static void set_target( oop site, oop target);
1378 static void set_target_volatile( oop site, oop target);
1379
1380 static oop context_no_keepalive(oop site);
1381
1382 // Testers
1383 static bool is_subclass(Klass* klass) {
1384 return klass->is_subclass_of(vmClasses::CallSite_klass());
1385 }
1386 static bool is_instance(oop obj);
1387
1388 // Accessors for code generation:
1389 static int target_offset() { CHECK_INIT(_target_offset); }
1390 static int context_offset() { CHECK_INIT(_context_offset); }
1391 };
1392
1393 // Interface to java.lang.invoke.ConstantCallSite objects
1394
1395 class java_lang_invoke_ConstantCallSite: AllStatic {
1396 friend class JavaClasses;
1397
1398 private:
1399 static int _is_frozen_offset;
1400
1401 static void compute_offsets();
1402
1403 public:
1404 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1405 // Accessors
1406 static jboolean is_frozen(oop site);
1407
1408 // Testers
1409 static bool is_subclass(Klass* klass) {
1410 return klass->is_subclass_of(vmClasses::ConstantCallSite_klass());
1411 }
1412 static bool is_instance(oop obj);
1413 };
1414
1415 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1416
1417 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1418 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1419 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1420
1421 class DependencyContext;
1422
1423 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1424 friend class JavaClasses;
1425
1426 private:
1427 static int _vmdependencies_offset;
1428 static int _last_cleanup_offset;
1429
1430 static void compute_offsets();
1431
1432 public:
1433 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1434 // Accessors
1435 static DependencyContext vmdependencies(oop context);
1436
1437 // Testers
1438 static bool is_subclass(Klass* klass) {
1439 return klass->is_subclass_of(vmClasses::Context_klass());
1440 }
1441 static bool is_instance(oop obj);
1442 };
1443
1444 // Interface to java.security.AccessControlContext objects
1445
1446 class java_security_AccessControlContext: AllStatic {
1447 private:
1448 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1449 // so we compute the offsets at startup rather than hard-wiring them.
1450 static int _context_offset;
1451 static int _privilegedContext_offset;
1452 static int _isPrivileged_offset;
1453 static int _isAuthorized_offset;
1454
1455 static void compute_offsets();
1456 public:
1457 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1458 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1459
1460 // Debugging/initialization
1461 friend class JavaClasses;
1462 };
1463
1464
1465 // Interface to java.lang.ClassLoader objects
1466
1467 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1468 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1469
1470 class java_lang_ClassLoader : AllStatic {
1471 private:
1472 static int _loader_data_offset;
1473 static int _parent_offset;
1474 static int _parallelCapable_offset;
1475 static int _name_offset;
1476 static int _nameAndId_offset;
1477 static int _unnamedModule_offset;
1478
1479 static void compute_offsets();
1480
1481 public:
1482 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1483
1484 static ClassLoaderData* loader_data_acquire(oop loader);
1485 static ClassLoaderData* loader_data(oop loader);
1486 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1487
1488 static oop parent(oop loader);
1489 static oop parent_no_keepalive(oop loader);
1490 static oop name(oop loader);
1491 static oop nameAndId(oop loader);
1492 static bool isAncestor(oop loader, oop cl);
1493
1494 // Support for parallelCapable field
1495 static bool parallelCapable(oop the_class_mirror);
1496
1497 static bool is_trusted_loader(oop loader);
1498
1499 // Return true if this is one of the class loaders associated with
1500 // the generated bytecodes for serialization constructor returned
1501 // by sun.reflect.ReflectionFactory::newConstructorForSerialization
1502 static bool is_reflection_class_loader(oop loader);
1503
1504 // Fix for 4474172
1505 static oop non_reflection_class_loader(oop loader);
1506
1507 // Testers
1508 static bool is_subclass(Klass* klass) {
1509 return klass->is_subclass_of(vmClasses::ClassLoader_klass());
1510 }
1511 static bool is_instance(oop obj);
1512
1513 static oop unnamedModule(oop loader);
1514
1515 // Debugging
1516 friend class JavaClasses;
1517 };
1518
1519
1520 // Interface to java.lang.System objects
1521
1522 class java_lang_System : AllStatic {
1523 private:
1524 static int _static_in_offset;
1525 static int _static_out_offset;
1526 static int _static_err_offset;
1527 static int _static_security_offset;
1528 static int _static_allow_security_offset;
1529 static int _static_never_offset;
1530
1531 public:
1532 static int in_offset() { CHECK_INIT(_static_in_offset); }
1533 static int out_offset() { CHECK_INIT(_static_out_offset); }
1534 static int err_offset() { CHECK_INIT(_static_err_offset); }
1535 static bool allow_security_manager();
1536 static bool has_security_manager();
1537
1538 static void compute_offsets();
1539 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1540
1541 // Debugging
1542 friend class JavaClasses;
1543 };
1544
1545
1546 // Interface to java.lang.StackTraceElement objects
1547
1548 class java_lang_StackTraceElement: AllStatic {
1549 private:
1550 static int _declaringClassObject_offset;
1551 static int _classLoaderName_offset;
1552 static int _moduleName_offset;
1553 static int _moduleVersion_offset;
1554 static int _declaringClass_offset;
1555 static int _methodName_offset;
1556 static int _fileName_offset;
1557 static int _lineNumber_offset;
1558
1559 // Setters
1560 static void set_classLoaderName(oop element, oop value);
1561 static void set_moduleName(oop element, oop value);
1562 static void set_moduleVersion(oop element, oop value);
1563 static void set_declaringClass(oop element, oop value);
1564 static void set_methodName(oop element, oop value);
1565 static void set_fileName(oop element, oop value);
1566 static void set_lineNumber(oop element, int value);
1567 static void set_declaringClassObject(oop element, oop value);
1568
1569 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1570 const methodHandle& method, int bci,
1571 Symbol*& source, oop& source_file, int& line_number, TRAPS);
1572
1573 public:
1574 // Create an instance of StackTraceElement
1575 static oop create(const methodHandle& method, int bci, TRAPS);
1576
1577 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1578 int version, int bci, Symbol* name, TRAPS);
1579
1580 static void compute_offsets();
1581 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1582
1583 #if INCLUDE_JVMCI
1584 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1585 #endif
1586
1587 // Debugging
1588 friend class JavaClasses;
1589 };
1590
1591
1592 class Backtrace: AllStatic {
1593 public:
1594 // Helper backtrace functions to store bci|version together.
1595 static int merge_bci_and_version(int bci, int version);
1596 static int merge_mid_and_cpref(int mid, int cpref);
1597 static int bci_at(unsigned int merged);
1598 static int version_at(unsigned int merged);
1599 static int mid_at(unsigned int merged);
1600 static int cpref_at(unsigned int merged);
1601 static int get_line_number(Method* method, int bci);
1602 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1603
1604 // Debugging
1605 friend class JavaClasses;
1606 };
1607
1608 // Interface to java.lang.StackFrameInfo objects
1609
1610 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1611 macro(java_lang_StackFrameInfo, version, short_signature, false)
1612
1613 class java_lang_StackFrameInfo: AllStatic {
1614 private:
1615 static int _memberName_offset;
1616 static int _bci_offset;
1617 static int _version_offset;
1618 static int _contScope_offset;
1619
1620 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1621
1622 public:
1623 // Setters
1624 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS);
1625 static void set_bci(oop info, int value);
1626
1627 static void set_version(oop info, short value);
1628 static void set_contScope(oop info, oop value);
1629
1630 static void compute_offsets();
1631 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1632
1633 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1634
1635 // Debugging
1636 friend class JavaClasses;
1637 };
1638
1639 class java_lang_LiveStackFrameInfo: AllStatic {
1640 private:
1641 static int _monitors_offset;
1642 static int _locals_offset;
1643 static int _operands_offset;
1644 static int _mode_offset;
1645
1646 public:
1647 static void set_monitors(oop info, oop value);
1648 static void set_locals(oop info, oop value);
1649 static void set_operands(oop info, oop value);
1650 static void set_mode(oop info, int value);
1651
1652 static void compute_offsets();
1653 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1654
1655 // Debugging
1656 friend class JavaClasses;
1657 };
1658
1659 // Interface to java.lang.reflect.RecordComponent objects
1660
1661 class java_lang_reflect_RecordComponent: AllStatic {
1662 private:
1663 static int _clazz_offset;
1664 static int _name_offset;
1665 static int _type_offset;
1666 static int _accessor_offset;
1667 static int _signature_offset;
1668 static int _annotations_offset;
1669 static int _typeAnnotations_offset;
1670
1671 // Setters
1672 static void set_clazz(oop element, oop value);
1673 static void set_name(oop element, oop value);
1674 static void set_type(oop element, oop value);
1675 static void set_accessor(oop element, oop value);
1676 static void set_signature(oop element, oop value);
1677 static void set_annotations(oop element, oop value);
1678 static void set_typeAnnotations(oop element, oop value);
1679
1680 public:
1681 // Create an instance of RecordComponent
1682 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1683
1684 static void compute_offsets();
1685 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1686
1687 // Debugging
1688 friend class JavaClasses;
1689 };
1690
1691
1692 // Interface to java.lang.AssertionStatusDirectives objects
1693
1694 class java_lang_AssertionStatusDirectives: AllStatic {
1695 private:
1696 static int _classes_offset;
1697 static int _classEnabled_offset;
1698 static int _packages_offset;
1699 static int _packageEnabled_offset;
1700 static int _deflt_offset;
1701
1702 public:
1703 // Setters
1704 static void set_classes(oop obj, oop val);
1705 static void set_classEnabled(oop obj, oop val);
1706 static void set_packages(oop obj, oop val);
1707 static void set_packageEnabled(oop obj, oop val);
1708 static void set_deflt(oop obj, bool val);
1709
1710 static void compute_offsets();
1711 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1712
1713 // Debugging
1714 friend class JavaClasses;
1715 };
1716
1717
1718 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1719 private:
1720 static int _owner_offset;
1721 public:
1722 static void compute_offsets();
1723 static oop get_owner_threadObj(oop obj);
1724 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1725 };
1726
1727 // Interface to jdk.internal.misc.UnsafeConsants
1728
1729 class jdk_internal_misc_UnsafeConstants : AllStatic {
1730 public:
1731 static void set_unsafe_constants();
1732 static void compute_offsets() { }
1733 static void serialize_offsets(SerializeClosure* f) { }
1734 };
1735
1736 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects
1737
1738 class vector_VectorPayload : AllStatic {
1739 private:
1740 static int _payload_offset;
1741 public:
1742 static void set_payload(oop o, oop val);
1743
1744 static void compute_offsets();
1745 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1746
1747 // Testers
1748 static bool is_subclass(Klass* klass) {
1749 return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass());
1750 }
1751 static bool is_instance(oop obj);
1752 };
1753
1754 class java_lang_Integer : AllStatic {
1755 public:
1756 static jint value(oop obj);
1757 };
1758
1759 class java_lang_Long : AllStatic {
1760 public:
1761 static jlong value(oop obj);
1762 };
1763
1764 class java_lang_Character : AllStatic {
1765 public:
1766 static jchar value(oop obj);
1767 };
1768
1769 class java_lang_Short : AllStatic {
1770 public:
1771 static jshort value(oop obj);
1772 };
1773
1774 class java_lang_Byte : AllStatic {
1775 public:
1776 static jbyte value(oop obj);
1777 };
1778
1779 class java_lang_Boolean : AllStatic {
1780 private:
1781 static int _static_TRUE_offset;
1782 static int _static_FALSE_offset;
1783 public:
1784 static Symbol* symbol();
1785 static void compute_offsets(InstanceKlass* k);
1786 static oop get_TRUE(InstanceKlass *k);
1787 static oop get_FALSE(InstanceKlass *k);
1788 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1789 static jboolean value(oop obj);
1790 };
1791
1792 class java_lang_Integer_IntegerCache : AllStatic {
1793 private:
1794 static int _static_cache_offset;
1795 public:
1796 static Symbol* symbol();
1797 static void compute_offsets(InstanceKlass* k);
1798 static objArrayOop cache(InstanceKlass *k);
1799 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1800 };
1801
1802 class java_lang_Long_LongCache : AllStatic {
1803 private:
1804 static int _static_cache_offset;
1805 public:
1806 static Symbol* symbol();
1807 static void compute_offsets(InstanceKlass* k);
1808 static objArrayOop cache(InstanceKlass *k);
1809 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1810 };
1811
1812 class java_lang_Character_CharacterCache : AllStatic {
1813 private:
1814 static int _static_cache_offset;
1815 public:
1816 static Symbol* symbol();
1817 static void compute_offsets(InstanceKlass* k);
1818 static objArrayOop cache(InstanceKlass *k);
1819 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1820 };
1821
1822 class java_lang_Short_ShortCache : 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_Byte_ByteCache : 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 // Interface to java.lang.InternalError objects
1843
1844 #define INTERNALERROR_INJECTED_FIELDS(macro) \
1845 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1846
1847 class java_lang_InternalError : AllStatic {
1848 private:
1849 static int _during_unsafe_access_offset;
1850 public:
1851 static jboolean during_unsafe_access(oop internal_error);
1852 static void set_during_unsafe_access(oop internal_error);
1853 static void compute_offsets();
1854 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1855 };
1856
1857 // Use to declare fields that need to be injected into Java classes
1858 // for the JVM to use. The name_index and signature_index are
1859 // declared in vmSymbols. The may_be_java flag is used to declare
1860 // fields that might already exist in Java but should be injected if
1861 // they don't. Otherwise the field is unconditionally injected and
1862 // the JVM uses the injected one. This is to ensure that name
1863 // collisions don't occur. In general may_be_java should be false
1864 // unless there's a good reason.
1865
1866 class InjectedField {
1867 public:
1868 const vmClassID klass_id;
1869 const vmSymbolID name_index;
1870 const vmSymbolID signature_index;
1871 const bool may_be_java;
1872
1873
1874 Klass* klass() const { return vmClasses::klass_at(klass_id); }
1875 Symbol* name() const { return lookup_symbol(name_index); }
1876 Symbol* signature() const { return lookup_symbol(signature_index); }
1877
1878 int compute_offset();
1879
1880 // Find the Symbol for this index
1881 static Symbol* lookup_symbol(vmSymbolID symbol_index) {
1882 return Symbol::vm_symbol_at(symbol_index);
1883 }
1884 };
1885
1886
1887 // Interface to hard-coded offset checking
1888
1889 enum class InjectedFieldID : int;
1890
1891 class JavaClasses : AllStatic {
1892 private:
1893
1894 static InjectedField _injected_fields[];
1895
1896 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1897 public:
1898
1899 static int compute_injected_offset(InjectedFieldID id);
1900
1901 static void compute_offsets();
1902 static void check_offsets() PRODUCT_RETURN;
1903 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1904 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1905 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1906
1907 static void compute_offset(int &dest_offset,
1908 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
1909 bool is_static = false);
1910 static void compute_offset(int& dest_offset, InstanceKlass* ik,
1911 const char* name_string, Symbol* signature_symbol,
1912 bool is_static = false);
1913 };
1914
1915 #undef CHECK_INIT
1916
1917 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP