1 /*
2 * Copyright (c) 1997, 2022, 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 "runtime/handles.hpp"
32 #include "utilities/macros.hpp"
33 #include "utilities/vmEnums.hpp"
34
35 class JvmtiThreadState;
36 class RecordComponent;
37
38 #define CHECK_INIT(offset) assert(offset != 0, "should be initialized"); return offset;
39
40 // Interface to java.lang.Object objects
41
42 class java_lang_Object : AllStatic {
43 public:
44 static void register_natives(TRAPS);
45 };
46
47 // Interface to java.lang.String objects
48
49 // The flags field is a collection of bits representing boolean values used
50 // internally by the VM.
51 #define STRING_INJECTED_FIELDS(macro) \
52 macro(java_lang_String, flags, byte_signature, false)
53
54 class java_lang_String : AllStatic {
55 private:
56 static int _value_offset;
57 static int _hash_offset;
58 static int _hashIsZero_offset;
59 static int _coder_offset;
60 static int _flags_offset;
61
62 static bool _initialized;
63
64 static Handle basic_create(int length, bool byte_arr, TRAPS);
65
66 static inline void set_coder(oop string, jbyte coder);
67
68 // Bitmasks for values in the injected flags field.
69 static const uint8_t _deduplication_forbidden_mask = 1 << 0;
70 static const uint8_t _deduplication_requested_mask = 1 << 1;
71
72 static int flags_offset() { CHECK_INIT(_flags_offset); }
73 // Return the address of the injected flags field.
74 static inline uint8_t* flags_addr(oop java_string);
75 // Test whether the designated bit of the injected flags field is set.
76 static inline bool is_flag_set(oop java_string, uint8_t flag_mask);
77 // Atomically test and set the designated bit of the injected flags field,
78 // returning true if the bit was already set.
79 static bool test_and_set_flag(oop java_string, uint8_t flag_mask);
80
81 static inline unsigned int hash_code_impl(oop java_string, bool update);
82
83 public:
84
85 // Coders
86 enum Coder {
87 CODER_LATIN1 = 0,
88 CODER_UTF16 = 1
89 };
90
91 static void compute_offsets();
92 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
93
94 // Instance creation
95 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
96 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
97 static Handle create_from_str(const char* utf8_str, TRAPS);
98 static oop create_oop_from_str(const char* utf8_str, TRAPS);
99 static Handle create_from_symbol(Symbol* symbol, TRAPS);
100 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
101
102 static void set_compact_strings(bool value);
103
104 static int value_offset() { CHECK_INIT(_value_offset); }
105 static int coder_offset() { CHECK_INIT(_coder_offset); }
106
107 static inline void set_value_raw(oop string, typeArrayOop buffer);
108 static inline void set_value(oop string, typeArrayOop buffer);
109
110 // Set the deduplication_forbidden flag true. This flag is sticky; once
111 // set it never gets cleared. This is set when a String is interned in
112 // the StringTable, to prevent string deduplication from changing the
113 // String's value array.
114 static inline void set_deduplication_forbidden(oop java_string);
115
116 // Test and set the deduplication_requested flag. Returns the old value
117 // of the flag. This flag is sticky; once set it never gets cleared.
118 // Some GCs may use this flag when deciding whether to request
119 // deduplication of a String, to avoid multiple requests for the same
120 // object.
121 static inline bool test_and_set_deduplication_requested(oop java_string);
122
123 // Accessors
124 static inline typeArrayOop value(oop java_string);
125 static inline typeArrayOop value_no_keepalive(oop java_string);
126 static inline bool hash_is_set(oop string);
127 static inline bool is_latin1(oop java_string);
128 static inline bool deduplication_forbidden(oop java_string);
129 static inline bool deduplication_requested(oop java_string);
130 static inline int length(oop java_string);
131 static inline int length(oop java_string, typeArrayOop string_value);
132 static int utf8_length(oop java_string);
133 static int utf8_length(oop java_string, typeArrayOop string_value);
134
135 // String converters
136 static char* as_utf8_string(oop java_string);
137 static char* as_utf8_string(oop java_string, int& length);
138 static char* as_utf8_string_full(oop java_string, char* buf, int buflen, int& length);
139 static char* as_utf8_string(oop java_string, char* buf, int buflen);
140 static char* as_utf8_string(oop java_string, int start, int len);
141 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
142 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
143 static char* as_platform_dependent_str(Handle java_string, TRAPS);
144 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
145 static jchar* as_unicode_string_or_null(oop java_string, int& length);
146 // produce an ascii string with all other values quoted using \u####
147 static char* as_quoted_ascii(oop java_string);
148
149 // Compute the hash value for a java.lang.String object which would
150 // contain the characters passed in.
151 //
152 // As the hash value used by the String object itself, in
153 // String.hashCode(). This value is normally calculated in Java code
154 // in the String.hashCode method(), but is precomputed for String
155 // objects in the shared archive file.
156 // hash P(31) from Kernighan & Ritchie
157 //
158 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
159 static unsigned int hash_code(const jchar* s, int len) {
160 unsigned int h = 0;
161 while (len-- > 0) {
162 h = 31*h + (unsigned int) *s;
163 s++;
164 }
165 return h;
166 }
167
168 static unsigned int hash_code(const jbyte* s, int len) {
169 unsigned int h = 0;
170 while (len-- > 0) {
171 h = 31*h + (((unsigned int) *s) & 0xFF);
172 s++;
173 }
174 return h;
175 }
176
177 static unsigned int hash_code(oop java_string);
178 static unsigned int hash_code_noupdate(oop java_string);
179
180 static bool equals(oop java_string, const jchar* chars, int len);
181 static bool equals(oop str1, oop str2);
182 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
183
184 // Conversion between '.' and '/' formats, and allocate a String from the result.
185 static Handle externalize_classname(Symbol* java_name, TRAPS);
186
187 // Conversion
188 static Symbol* as_symbol(oop java_string);
189 static Symbol* as_symbol_or_null(oop java_string);
190
191 // Tester
192 static inline bool is_instance(oop obj);
193
194 // Debugging
195 static void print(oop java_string, outputStream* st);
196 friend class JavaClasses;
197 friend class StringTable;
198 };
199
200
201 // Interface to java.lang.Class objects
202
203 #define CLASS_INJECTED_FIELDS(macro) \
204 macro(java_lang_Class, klass, intptr_signature, false) \
205 macro(java_lang_Class, array_klass, intptr_signature, false) \
206 macro(java_lang_Class, oop_size, int_signature, false) \
207 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
208 macro(java_lang_Class, protection_domain, object_signature, false) \
209 macro(java_lang_Class, signers, object_signature, false) \
210 macro(java_lang_Class, source_file, object_signature, false) \
211
212 class java_lang_Class : AllStatic {
213 friend class VMStructs;
214 friend class JVMCIVMStructs;
215
216 private:
217
218 // The fake offsets are added by the class loader when java.lang.Class is loaded
219
220 static int _klass_offset;
221 static int _array_klass_offset;
222
223 static int _oop_size_offset;
224 static int _static_oop_field_count_offset;
225
226 static int _protection_domain_offset;
227 static int _signers_offset;
228 static int _class_loader_offset;
229 static int _module_offset;
230 static int _component_mirror_offset;
231 static int _primary_mirror_offset;
232 static int _secondary_mirror_offset;
233
234 static int _name_offset;
235 static int _source_file_offset;
236 static int _classData_offset;
237 static int _classRedefinedCount_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 set_primary_mirror(oop java_class, oop comp_mirror);
248 static void set_secondary_mirror(oop java_class, oop comp_mirror);
249
250 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
251 Handle classData, TRAPS);
252 static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
253 public:
254 static void allocate_fixup_lists();
255 static void compute_offsets();
256
257 // Instance creation
258 static void create_mirror(Klass* k, Handle class_loader, Handle module,
259 Handle protection_domain, Handle classData, TRAPS);
260 static void fixup_mirror(Klass* k, TRAPS);
261 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
262 static oop create_secondary_mirror(Klass* k, Handle mirror, TRAPS);
263 static void update_archived_primitive_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
264 static void update_archived_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
265
266 // Archiving
267 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
268 static void archive_basic_type_mirrors() NOT_CDS_JAVA_HEAP_RETURN;
269 static oop archive_mirror(Klass* k) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
270 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror)
271 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
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 = NULL);
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 JFR_ONLY(macro(java_lang_Thread, jfr_epoch, short_signature, false))
354
355 class java_lang_Thread : AllStatic {
356 friend class java_lang_VirtualThread;
357 private:
358 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
359 // so we compute the offsets at startup rather than hard-wiring them.
360 static int _holder_offset;
361 static int _name_offset;
362 static int _contextClassLoader_offset;
363 static int _inheritedAccessControlContext_offset;
364 static int _eetop_offset;
365 static int _jvmti_thread_state_offset;
366 static int _interrupted_offset;
367 static int _tid_offset;
368 static int _continuation_offset;
369 static int _park_blocker_offset;
370 static int _extentLocalBindings_offset;
371 JFR_ONLY(static int _jfr_epoch_offset;)
372
373 static void compute_offsets();
374
375 public:
376 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
377
378 // Returns the JavaThread associated with the thread obj
379 static JavaThread* thread(oop java_thread);
380 // Set JavaThread for instance
381 static void set_thread(oop java_thread, JavaThread* thread);
382 // FieldHolder
383 static oop holder(oop java_thread);
384 // Interrupted status
385 static bool interrupted(oop java_thread);
386 static void set_interrupted(oop java_thread, bool val);
387 // Name
388 static oop name(oop java_thread);
389 static void set_name(oop java_thread, oop name);
390 // Priority
391 static ThreadPriority priority(oop java_thread);
392 static void set_priority(oop java_thread, ThreadPriority priority);
393 // Thread group
394 static oop threadGroup(oop java_thread);
395 // Alive (NOTE: this is not really a field, but provides the correct
396 // definition without doing a Java call)
397 static bool is_alive(oop java_thread);
398 // Daemon
399 static bool is_daemon(oop java_thread);
400 static void set_daemon(oop java_thread);
401 // Context ClassLoader
402 static oop context_class_loader(oop java_thread);
403 // Control context
404 static oop inherited_access_control_context(oop java_thread);
405 // Stack size hint
406 static jlong stackSize(oop java_thread);
407 // Thread ID
408 static int64_t thread_id(oop java_thread);
409 static ByteSize thread_id_offset();
410 // Continuation
411 static inline oop continuation(oop java_thread);
412
413 static JvmtiThreadState* jvmti_thread_state(oop java_thread);
414 static void set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state);
415
416 // Clear all extent local bindings on error
417 static void clear_extentLocalBindings(oop java_thread);
418
419 // Blocker object responsible for thread parking
420 static oop park_blocker(oop java_thread);
421
422 // Write thread status info to threadStatus field of java.lang.Thread.
423 static void set_thread_status(oop java_thread_oop, JavaThreadStatus status);
424 // Read thread status info from threadStatus field of java.lang.Thread.
425 static JavaThreadStatus get_thread_status(oop java_thread_oop);
426
427 static const char* thread_status_name(oop java_thread_oop);
428
429 // Fill in current stack trace, can cause GC
430 static oop async_get_stack_trace(oop java_thread, TRAPS);
431
432 JFR_ONLY(static u2 jfr_epoch(oop java_thread);)
433 JFR_ONLY(static void set_jfr_epoch(oop java_thread, u2 epoch);)
434 JFR_ONLY(static int jfr_epoch_offset() { CHECK_INIT(_jfr_epoch_offset); })
435
436 // Debugging
437 friend class JavaClasses;
438 };
439
440 // Interface to java.lang.Thread$FieldHolder objects
441
442 class java_lang_Thread_FieldHolder : AllStatic {
443 private:
444 static int _group_offset;
445 static int _priority_offset;
446 static int _stackSize_offset;
447 static int _daemon_offset;
448 static int _thread_status_offset;
449
450 static void compute_offsets();
451
452 public:
453 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
454
455 static oop threadGroup(oop holder);
456
457 static ThreadPriority priority(oop holder);
458 static void set_priority(oop holder, ThreadPriority priority);
459
460 static jlong stackSize(oop holder);
461
462 static bool is_daemon(oop holder);
463 static void set_daemon(oop holder);
464
465 static void set_thread_status(oop holder, JavaThreadStatus);
466 static JavaThreadStatus get_thread_status(oop holder);
467
468 friend class JavaClasses;
469 };
470
471 // Interface to java.lang.Thread$Constants objects
472
473 class java_lang_Thread_Constants : AllStatic {
474 private:
475 static int _static_VTHREAD_GROUP_offset;
476 static int _static_NOT_SUPPORTED_CLASSLOADER_offset;
477
478 static void compute_offsets();
479 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
480
481 public:
482 static oop get_VTHREAD_GROUP();
483 static oop get_NOT_SUPPORTED_CLASSLOADER();
484
485 friend class JavaClasses;
486 };
487
488 // Interface to java.lang.ThreadGroup objects
489
490 class java_lang_ThreadGroup : AllStatic {
491 private:
492 static int _parent_offset;
493 static int _name_offset;
494 static int _maxPriority_offset;
495 static int _daemon_offset;
496
497 static int _ngroups_offset;
498 static int _groups_offset;
499 static int _nweaks_offset;
500 static int _weaks_offset;
501
502 static void compute_offsets();
503
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 // Number of strongly reachable thread groups
517 static int ngroups(oop java_thread_group);
518 // Strongly reachable thread groups
519 static objArrayOop groups(oop java_thread_group);
520 // Number of weakly reachable thread groups
521 static int nweaks(oop java_thread_group);
522 // Weakly reachable thread groups
523 static objArrayOop weaks(oop java_thread_group);
524
525 // Debugging
526 friend class JavaClasses;
527 };
528
529
530 // Interface to java.lang.VirtualThread objects
531
532 class java_lang_VirtualThread : AllStatic {
533 private:
534 static int static_notify_jvmti_events_offset;
535 static int static_vthread_scope_offset;
536 static int _carrierThread_offset;
537 static int _continuation_offset;
538 static int _state_offset;
539 JFR_ONLY(static int _jfr_epoch_offset;)
540 public:
541 enum {
542 NEW = 0,
543 STARTED = 1,
544 RUNNABLE = 2,
545 RUNNING = 3,
546 PARKING = 4,
547 PARKED = 5,
548 PINNED = 6,
549 YIELDING = 7,
550 TERMINATED = 99,
551
552 // can be suspended from scheduling when unmounted
553 SUSPENDED = 1 << 8,
554 RUNNABLE_SUSPENDED = (RUNNABLE | SUSPENDED),
555 PARKED_SUSPENDED = (PARKED | SUSPENDED)
556 };
557
558 static void compute_offsets();
559 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
560
561 // Testers
562 static bool is_subclass(Klass* klass) {
563 return klass->is_subclass_of(vmClasses::VirtualThread_klass());
564 }
565 static bool is_instance(oop obj);
566
567 static oop vthread_scope();
568 static oop carrier_thread(oop vthread);
569 static oop continuation(oop vthread);
570 static int state(oop vthread);
571 static JavaThreadStatus map_state_to_thread_status(int state);
572 static bool notify_jvmti_events();
573 static void set_notify_jvmti_events(bool enable);
574 static void init_static_notify_jvmti_events();
575 };
576
577
578 // Interface to java.lang.Throwable objects
579
580 class java_lang_Throwable: AllStatic {
581 friend class BacktraceBuilder;
582 friend class BacktraceIterator;
583
584 private:
585 // Trace constants
586 enum {
587 trace_methods_offset = 0,
588 trace_bcis_offset = 1,
589 trace_mirrors_offset = 2,
590 trace_names_offset = 3,
591 trace_conts_offset = 4,
592 trace_next_offset = 5,
593 trace_hidden_offset = 6,
594 trace_size = 7,
595 trace_chunk_size = 32
596 };
597
598 static int _backtrace_offset;
599 static int _detailMessage_offset;
600 static int _stackTrace_offset;
601 static int _depth_offset;
602 static int _cause_offset;
603 static int _static_unassigned_stacktrace_offset;
604
605 // StackTrace (programmatic access, new since 1.4)
606 static void clear_stacktrace(oop throwable);
607 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
608 static void set_stacktrace(oop throwable, oop st_element_array);
609 static oop unassigned_stacktrace();
610
611 public:
612 // Backtrace
613 static oop backtrace(oop throwable);
614 static void set_backtrace(oop throwable, oop value);
615 static int depth(oop throwable);
616 static void set_depth(oop throwable, int value);
617 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
618 // Message
619 static oop message(oop throwable);
620 static oop cause(oop throwable);
621 static void set_message(oop throwable, oop value);
622 static Symbol* detail_message(oop throwable);
623 static void print_stack_element(outputStream *st, Method* method, int bci);
624
625 static void compute_offsets();
626 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
627
628 // Allocate space for backtrace (created but stack trace not filled in)
629 static void allocate_backtrace(Handle throwable, TRAPS);
630 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
631 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
632 // Fill in current stack trace, can cause GC
633 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
634 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
635
636 // Programmatic access to stack trace
637 static void get_stack_trace_elements(int depth, Handle backtrace, objArrayHandle stack_trace, TRAPS);
638
639 // For recreating class initialization error exceptions.
640 static Handle get_cause_with_stack_trace(Handle throwable, TRAPS);
641
642 // Printing
643 static void print(oop throwable, outputStream* st);
644 static void print_stack_trace(Handle throwable, outputStream* st);
645 static void java_printStackTrace(Handle throwable, TRAPS);
646 // Debugging
647 friend class JavaClasses;
648 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
649 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
650 };
651
652
653 // Interface to java.lang.reflect.AccessibleObject objects
654
655 class java_lang_reflect_AccessibleObject: AllStatic {
656 private:
657 // Note that to reduce dependencies on the JDK we compute these
658 // offsets at run-time.
659 static int _override_offset;
660
661 static void compute_offsets();
662
663 public:
664 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
665
666 // Accessors
667 static jboolean override(oop reflect);
668 static void set_override(oop reflect, jboolean value);
669
670 // Debugging
671 friend class JavaClasses;
672 };
673
674
675 // Interface to java.lang.reflect.Method objects
676
677 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
678 private:
679 // Note that to reduce dependencies on the JDK we compute these
680 // offsets at run-time.
681 static int _clazz_offset;
682 static int _name_offset;
683 static int _returnType_offset;
684 static int _parameterTypes_offset;
685 static int _exceptionTypes_offset;
686 static int _slot_offset;
687 static int _modifiers_offset;
688 static int _signature_offset;
689 static int _annotations_offset;
690 static int _parameter_annotations_offset;
691 static int _annotation_default_offset;
692
693 static void compute_offsets();
694 public:
695 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
696
697 // Allocation
698 static Handle create(TRAPS);
699
700 // Accessors
701 static oop clazz(oop reflect);
702 static void set_clazz(oop reflect, oop value);
703
704 static void set_name(oop method, oop value);
705
706 static oop return_type(oop method);
707 static void set_return_type(oop method, oop value);
708
709 static oop parameter_types(oop method);
710 static void set_parameter_types(oop method, oop value);
711
712 static int slot(oop reflect);
713 static void set_slot(oop reflect, int value);
714
715 static void set_exception_types(oop method, oop value);
716 static void set_modifiers(oop method, int value);
717 static void set_signature(oop method, oop value);
718 static void set_annotations(oop method, oop value);
719 static void set_parameter_annotations(oop method, oop value);
720 static void set_annotation_default(oop method, oop value);
721
722 // Debugging
723 friend class JavaClasses;
724 };
725
726
727 // Interface to java.lang.reflect.Constructor objects
728
729 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
730 private:
731 // Note that to reduce dependencies on the JDK we compute these
732 // offsets at run-time.
733 static int _clazz_offset;
734 static int _parameterTypes_offset;
735 static int _exceptionTypes_offset;
736 static int _slot_offset;
737 static int _modifiers_offset;
738 static int _signature_offset;
739 static int _annotations_offset;
740 static int _parameter_annotations_offset;
741
742 static void compute_offsets();
743 public:
744 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
745
746 // Allocation
747 static Handle create(TRAPS);
748
749 // Accessors
750 static oop clazz(oop reflect);
751 static void set_clazz(oop reflect, oop value);
752
753 static oop parameter_types(oop constructor);
754 static void set_parameter_types(oop constructor, oop value);
755
756 static int slot(oop reflect);
757 static void set_slot(oop reflect, int value);
758
759 static void set_exception_types(oop constructor, oop value);
760 static void set_modifiers(oop constructor, int value);
761 static void set_signature(oop constructor, oop value);
762 static void set_annotations(oop constructor, oop value);
763 static void set_parameter_annotations(oop method, oop value);
764
765 // Debugging
766 friend class JavaClasses;
767 };
768
769
770 // Interface to java.lang.reflect.Field objects
771
772 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
773 private:
774 // Note that to reduce dependencies on the JDK we compute these
775 // offsets at run-time.
776 static int _clazz_offset;
777 static int _name_offset;
778 static int _type_offset;
779 static int _slot_offset;
780 static int _modifiers_offset;
781 static int _trusted_final_offset;
782 static int _signature_offset;
783 static int _annotations_offset;
784
785 static void compute_offsets();
786
787 public:
788 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
789
790 // Allocation
791 static Handle create(TRAPS);
792
793 // Accessors
794 static oop clazz(oop reflect);
795 static void set_clazz(oop reflect, oop value);
796
797 static oop name(oop field);
798 static void set_name(oop field, oop value);
799
800 static oop type(oop field);
801 static void set_type(oop field, oop value);
802
803 static int slot(oop reflect);
804 static void set_slot(oop reflect, int value);
805
806 static int modifiers(oop field);
807 static void set_modifiers(oop field, int value);
808
809 static void set_trusted_final(oop field);
810
811 static void set_signature(oop constructor, oop value);
812 static void set_annotations(oop constructor, oop value);
813
814 // Debugging
815 friend class JavaClasses;
816 };
817
818 class java_lang_reflect_Parameter {
819 private:
820 // Note that to reduce dependencies on the JDK we compute these
821 // offsets at run-time.
822 static int _name_offset;
823 static int _modifiers_offset;
824 static int _index_offset;
825 static int _executable_offset;
826
827 static void compute_offsets();
828
829 public:
830 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
831
832 // Allocation
833 static Handle create(TRAPS);
834
835 // Accessors
836 static oop name(oop field);
837 static void set_name(oop field, oop value);
838
839 static int index(oop reflect);
840 static void set_index(oop reflect, int value);
841
842 static int modifiers(oop reflect);
843 static void set_modifiers(oop reflect, int value);
844
845 static oop executable(oop constructor);
846 static void set_executable(oop constructor, oop value);
847
848 friend class JavaClasses;
849 };
850
851 #define MODULE_INJECTED_FIELDS(macro) \
852 macro(java_lang_Module, module_entry, intptr_signature, false)
853
854 class java_lang_Module {
855 private:
856 static int _loader_offset;
857 static int _name_offset;
858 static int _module_entry_offset;
859
860 static void compute_offsets();
861
862 public:
863 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
864
865 // Allocation
866 static Handle create(Handle loader, Handle module_name, TRAPS);
867
868 // Testers
869 static bool is_instance(oop obj);
870
871 // Accessors
872 static oop loader(oop module);
873 static void set_loader(oop module, oop value);
874
875 static oop name(oop module);
876 static void set_name(oop module, oop value);
877
878 static ModuleEntry* module_entry(oop module);
879 static ModuleEntry* module_entry_raw(oop module);
880 static void set_module_entry(oop module, ModuleEntry* module_entry);
881
882 friend class JavaClasses;
883 };
884
885 // Interface to jdk.internal.reflect.ConstantPool objects
886 class reflect_ConstantPool {
887 private:
888 // Note that to reduce dependencies on the JDK we compute these
889 // offsets at run-time.
890 static int _oop_offset;
891
892 static void compute_offsets();
893
894 public:
895 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
896
897 // Allocation
898 static Handle create(TRAPS);
899
900 // Accessors
901 static void set_cp(oop reflect, ConstantPool* value);
902 static int oop_offset() { CHECK_INIT(_oop_offset); }
903
904 static ConstantPool* get_cp(oop reflect);
905
906 // Debugging
907 friend class JavaClasses;
908 };
909
910 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
911 class reflect_UnsafeStaticFieldAccessorImpl {
912 private:
913 static int _base_offset;
914 static void compute_offsets();
915
916 public:
917 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
918
919 static int base_offset() { CHECK_INIT(_base_offset); }
920
921 // Debugging
922 friend class JavaClasses;
923 };
924
925 // Interface to java.lang primitive type boxing objects:
926 // - java.lang.Boolean
927 // - java.lang.Character
928 // - java.lang.Float
929 // - java.lang.Double
930 // - java.lang.Byte
931 // - java.lang.Short
932 // - java.lang.Integer
933 // - java.lang.Long
934
935 // This could be separated out into 8 individual classes.
936
937 class java_lang_boxing_object: AllStatic {
938 private:
939 static int _value_offset;
940 static int _long_value_offset;
941
942 static void compute_offsets();
943 static oop initialize_and_allocate(BasicType type, TRAPS);
944 public:
945 // Allocation. Returns a boxed value, or NULL for invalid type.
946 static oop create(BasicType type, jvalue* value, TRAPS);
947 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
948 static BasicType get_value(oop box, jvalue* value);
949 static BasicType set_value(oop box, jvalue* value);
950 static BasicType basic_type(oop box);
951 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
952 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
953 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
954 static void print(BasicType type, jvalue* value, outputStream* st);
955
956 static int value_offset(BasicType type) {
957 return is_double_word_type(type) ? _long_value_offset : _value_offset;
958 }
959
960 static void serialize_offsets(SerializeClosure* f);
961
962 // Debugging
963 friend class JavaClasses;
964 };
965
966
967
968 // Interface to java.lang.ref.Reference objects
969
970 class java_lang_ref_Reference: AllStatic {
971 static int _referent_offset;
972 static int _queue_offset;
973 static int _next_offset;
974 static int _discovered_offset;
975
976 static bool _offsets_initialized;
977
978 public:
979 // Accessors
980 static inline oop weak_referent_no_keepalive(oop ref);
981 static inline oop weak_referent(oop ref);
982 static inline oop phantom_referent_no_keepalive(oop ref);
983 static inline oop unknown_referent_no_keepalive(oop ref);
984 static inline void clear_referent(oop ref);
985 static inline HeapWord* referent_addr_raw(oop ref);
986 static inline oop next(oop ref);
987 static inline void set_next(oop ref, oop value);
988 static inline void set_next_raw(oop ref, oop value);
989 static inline HeapWord* next_addr_raw(oop ref);
990 static inline oop discovered(oop ref);
991 static inline void set_discovered(oop ref, oop value);
992 static inline void set_discovered_raw(oop ref, oop value);
993 static inline HeapWord* discovered_addr_raw(oop ref);
994 static bool is_referent_field(oop obj, ptrdiff_t offset);
995 static inline bool is_final(oop ref);
996 static inline bool is_phantom(oop ref);
997 static inline bool is_weak(oop ref);
998 static inline bool is_soft(oop ref);
999
1000 static int referent_offset() { CHECK_INIT(_referent_offset); }
1001 static int queue_offset() { CHECK_INIT(_queue_offset); }
1002 static int next_offset() { CHECK_INIT(_next_offset); }
1003 static int discovered_offset() { CHECK_INIT(_discovered_offset); }
1004
1005 static void compute_offsets();
1006 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1007 };
1008
1009
1010 // Interface to java.lang.ref.SoftReference objects
1011
1012 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
1013 static int _timestamp_offset;
1014 static int _static_clock_offset;
1015
1016 public:
1017 // Accessors
1018 static jlong timestamp(oop ref);
1019
1020 // Accessors for statics
1021 static jlong clock();
1022 static void set_clock(jlong value);
1023
1024 static void compute_offsets();
1025 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1026 };
1027
1028 // Interface to java.lang.invoke.MethodHandle objects
1029
1030 class java_lang_invoke_MethodHandle: AllStatic {
1031 friend class JavaClasses;
1032
1033 private:
1034 static int _type_offset; // the MethodType of this MH
1035 static int _form_offset; // the LambdaForm of this MH
1036
1037 static void compute_offsets();
1038
1039 public:
1040 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1041
1042 // Accessors
1043 static oop type(oop mh);
1044 static void set_type(oop mh, oop mtype);
1045
1046 static oop form(oop mh);
1047 static void set_form(oop mh, oop lform);
1048
1049 // Testers
1050 static bool is_subclass(Klass* klass) {
1051 return klass->is_subclass_of(vmClasses::MethodHandle_klass());
1052 }
1053 static bool is_instance(oop obj);
1054
1055 // Accessors for code generation:
1056 static int type_offset() { CHECK_INIT(_type_offset); }
1057 static int form_offset() { CHECK_INIT(_form_offset); }
1058 };
1059
1060 // Interface to java.lang.invoke.DirectMethodHandle objects
1061
1062 class java_lang_invoke_DirectMethodHandle: AllStatic {
1063 friend class JavaClasses;
1064
1065 private:
1066 static int _member_offset; // the MemberName of this DMH
1067
1068 static void compute_offsets();
1069
1070 public:
1071 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1072
1073 // Accessors
1074 static oop member(oop mh);
1075
1076 // Testers
1077 static bool is_subclass(Klass* klass) {
1078 return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass());
1079 }
1080 static bool is_instance(oop obj);
1081
1082 // Accessors for code generation:
1083 static int member_offset() { CHECK_INIT(_member_offset); }
1084 };
1085
1086 // Interface to java.lang.invoke.LambdaForm objects
1087 // (These are a private interface for managing adapter code generation.)
1088
1089 class java_lang_invoke_LambdaForm: AllStatic {
1090 friend class JavaClasses;
1091
1092 private:
1093 static int _vmentry_offset; // type is MemberName
1094
1095 static void compute_offsets();
1096
1097 public:
1098 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1099
1100 // Accessors
1101 static oop vmentry(oop lform);
1102
1103 // Testers
1104 static bool is_subclass(Klass* klass) {
1105 return vmClasses::LambdaForm_klass() != NULL &&
1106 klass->is_subclass_of(vmClasses::LambdaForm_klass());
1107 }
1108 static bool is_instance(oop obj);
1109
1110 // Accessors for code generation:
1111 static int vmentry_offset() { CHECK_INIT(_vmentry_offset); }
1112 };
1113
1114 // Interface to java.lang.invoke.NativeEntryPoint objects
1115 // (These are a private interface for managing adapter code generation.)
1116
1117 class jdk_internal_foreign_abi_NativeEntryPoint: AllStatic {
1118 friend class JavaClasses;
1119
1120 private:
1121 static int _method_type_offset;
1122 static int _downcall_stub_address_offset;
1123
1124 static void compute_offsets();
1125
1126 public:
1127 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1128
1129 // Accessors
1130 static oop method_type(oop entry);
1131 static jlong downcall_stub_address(oop entry);
1132
1133 // Testers
1134 static bool is_subclass(Klass* klass) {
1135 return vmClasses::NativeEntryPoint_klass() != NULL &&
1136 klass->is_subclass_of(vmClasses::NativeEntryPoint_klass());
1137 }
1138 static bool is_instance(oop obj);
1139
1140 // Accessors for code generation:
1141 static int method_type_offset_in_bytes() { return _method_type_offset; }
1142 static int downcall_stub_address_offset_in_bytes() { return _downcall_stub_address_offset; }
1143 };
1144
1145 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic {
1146 friend class JavaClasses;
1147
1148 private:
1149 static int _inputStorage_offset;
1150 static int _outputStorage_offset;
1151 static int _volatileStorage_offset;
1152 static int _stackAlignment_offset;
1153 static int _shadowSpace_offset;
1154 static int _targetAddrStorage_offset;
1155 static int _retBufAddrStorage_offset;
1156
1157 static void compute_offsets();
1158
1159 public:
1160 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1161
1162 // Accessors
1163 static objArrayOop inputStorage(oop entry);
1164 static objArrayOop outputStorage(oop entry);
1165 static objArrayOop volatileStorage(oop entry);
1166 static jint stackAlignment(oop entry);
1167 static jint shadowSpace(oop entry);
1168 static oop targetAddrStorage(oop entry);
1169 static oop retBufAddrStorage(oop entry);
1170
1171 // Testers
1172 static bool is_subclass(Klass* klass) {
1173 return vmClasses::ABIDescriptor_klass() != NULL &&
1174 klass->is_subclass_of(vmClasses::ABIDescriptor_klass());
1175 }
1176 static bool is_instance(oop obj);
1177 };
1178
1179 class jdk_internal_foreign_abi_VMStorage: AllStatic {
1180 friend class JavaClasses;
1181
1182 private:
1183 static int _type_offset;
1184 static int _index_offset;
1185 static int _debugName_offset;
1186
1187 static void compute_offsets();
1188
1189 public:
1190 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1191
1192 // Accessors
1193 static jint type(oop entry);
1194 static jint index(oop entry);
1195 static oop debugName(oop entry);
1196
1197 // Testers
1198 static bool is_subclass(Klass* klass) {
1199 return vmClasses::VMStorage_klass() != NULL &&
1200 klass->is_subclass_of(vmClasses::VMStorage_klass());
1201 }
1202 static bool is_instance(oop obj);
1203 };
1204
1205 class jdk_internal_foreign_abi_CallConv: AllStatic {
1206 friend class JavaClasses;
1207
1208 private:
1209 static int _argRegs_offset;
1210 static int _retRegs_offset;
1211
1212 static void compute_offsets();
1213
1214 public:
1215 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1216
1217 // Accessors
1218 static objArrayOop argRegs(oop entry);
1219 static objArrayOop retRegs(oop entry);
1220
1221 // Testers
1222 static bool is_subclass(Klass* klass) {
1223 return vmClasses::CallConv_klass() != NULL &&
1224 klass->is_subclass_of(vmClasses::CallConv_klass());
1225 }
1226 static bool is_instance(oop obj);
1227 };
1228
1229 // Interface to java.lang.invoke.MemberName objects
1230 // (These are a private interface for Java code to query the class hierarchy.)
1231
1232 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1233 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1234 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1235
1236 class java_lang_invoke_ResolvedMethodName : AllStatic {
1237 friend class JavaClasses;
1238
1239 static int _vmtarget_offset;
1240 static int _vmholder_offset;
1241
1242 static void compute_offsets();
1243 public:
1244 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1245
1246 static int vmtarget_offset() { CHECK_INIT(_vmtarget_offset); }
1247
1248 static Method* vmtarget(oop resolved_method);
1249 static void set_vmtarget(oop resolved_method, Method* method);
1250
1251 static void set_vmholder(oop resolved_method, oop holder);
1252
1253 // find or create resolved member name
1254 static oop find_resolved_method(const methodHandle& m, TRAPS);
1255
1256 static bool is_instance(oop resolved_method);
1257 };
1258
1259
1260 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1261 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1262
1263
1264 class java_lang_invoke_MemberName: AllStatic {
1265 friend class JavaClasses;
1266
1267 private:
1268 // From java.lang.invoke.MemberName:
1269 // private Class<?> clazz; // class in which the method is defined
1270 // private String name; // may be null if not yet materialized
1271 // private Object type; // may be null if not yet materialized
1272 // private int flags; // modifier bits; see reflect.Modifier
1273 // private ResolvedMethodName method; // holds VM-specific target value
1274 // private intptr_t vmindex; // member index within class or interface
1275 static int _clazz_offset;
1276 static int _name_offset;
1277 static int _type_offset;
1278 static int _flags_offset;
1279 static int _method_offset;
1280 static int _vmindex_offset;
1281
1282 static void compute_offsets();
1283
1284 public:
1285 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1286 // Accessors
1287 static oop clazz(oop mname);
1288 static void set_clazz(oop mname, oop clazz);
1289
1290 static oop type(oop mname);
1291 static void set_type(oop mname, oop type);
1292
1293 static oop name(oop mname);
1294 static void set_name(oop mname, oop name);
1295
1296 static int flags(oop mname);
1297 static void set_flags(oop mname, int flags);
1298
1299 // Link through ResolvedMethodName field to get Method*
1300 static Method* vmtarget(oop mname);
1301 static void set_method(oop mname, oop method);
1302
1303 static intptr_t vmindex(oop mname);
1304 static void set_vmindex(oop mname, intptr_t index);
1305
1306 // Testers
1307 static bool is_subclass(Klass* klass) {
1308 return klass->is_subclass_of(vmClasses::MemberName_klass());
1309 }
1310 static bool is_instance(oop obj);
1311
1312 static bool is_method(oop obj);
1313
1314 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1315 enum {
1316 MN_IS_METHOD = 0x00010000, // method (not constructor)
1317 MN_IS_OBJECT_CONSTRUCTOR = 0x00020000, // constructor
1318 MN_IS_FIELD = 0x00040000, // field
1319 MN_IS_TYPE = 0x00080000, // nested type
1320 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1321 MN_TRUSTED_FINAL = 0x00200000, // trusted final field
1322 MN_FLATTENED = 0x00400000, // flattened field
1323 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1324 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1325 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1326 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1327 MN_SEARCH_INTERFACES = 0x00200000, // walk implemented interfaces
1328 MN_NESTMATE_CLASS = 0x00000001,
1329 MN_HIDDEN_CLASS = 0x00000002,
1330 MN_STRONG_LOADER_LINK = 0x00000004,
1331 MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1332 // Lookup modes
1333 MN_MODULE_MODE = 0x00000010,
1334 MN_UNCONDITIONAL_MODE = 0x00000020,
1335 MN_TRUSTED_MODE = -1
1336 };
1337
1338 // Accessors for code generation:
1339 static int clazz_offset() { CHECK_INIT(_clazz_offset); }
1340 static int type_offset() { CHECK_INIT(_type_offset); }
1341 static int flags_offset() { CHECK_INIT(_flags_offset); }
1342 static int method_offset() { CHECK_INIT(_method_offset); }
1343 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1344 };
1345
1346
1347 // Interface to java.lang.invoke.MethodType objects
1348
1349 class java_lang_invoke_MethodType: AllStatic {
1350 friend class JavaClasses;
1351
1352 private:
1353 static int _rtype_offset;
1354 static int _ptypes_offset;
1355
1356 static void compute_offsets();
1357
1358 public:
1359 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1360 // Accessors
1361 static oop rtype(oop mt);
1362 static objArrayOop ptypes(oop mt);
1363
1364 static oop ptype(oop mt, int index);
1365 static int ptype_count(oop mt);
1366
1367 static int ptype_slot_count(oop mt); // extra counts for long/double
1368 static int rtype_slot_count(oop mt); // extra counts for long/double
1369
1370 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1371 static void print_signature(oop mt, outputStream* st);
1372
1373 static bool is_instance(oop obj);
1374
1375 static bool equals(oop mt1, oop mt2);
1376
1377 // Accessors for code generation:
1378 static int rtype_offset() { CHECK_INIT(_rtype_offset); }
1379 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); }
1380 };
1381
1382
1383 // Interface to java.lang.invoke.CallSite objects
1384
1385 class java_lang_invoke_CallSite: AllStatic {
1386 friend class JavaClasses;
1387
1388 private:
1389 static int _target_offset;
1390 static int _context_offset;
1391
1392 static void compute_offsets();
1393
1394 public:
1395 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1396 // Accessors
1397 static oop target( oop site);
1398 static void set_target( oop site, oop target);
1399 static void set_target_volatile( oop site, oop target);
1400
1401 static oop context_no_keepalive(oop site);
1402
1403 // Testers
1404 static bool is_subclass(Klass* klass) {
1405 return klass->is_subclass_of(vmClasses::CallSite_klass());
1406 }
1407 static bool is_instance(oop obj);
1408
1409 // Accessors for code generation:
1410 static int target_offset() { CHECK_INIT(_target_offset); }
1411 static int context_offset() { CHECK_INIT(_context_offset); }
1412 };
1413
1414 // Interface to java.lang.invoke.ConstantCallSite objects
1415
1416 class java_lang_invoke_ConstantCallSite: AllStatic {
1417 friend class JavaClasses;
1418
1419 private:
1420 static int _is_frozen_offset;
1421
1422 static void compute_offsets();
1423
1424 public:
1425 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1426 // Accessors
1427 static jboolean is_frozen(oop site);
1428
1429 // Testers
1430 static bool is_subclass(Klass* klass) {
1431 return klass->is_subclass_of(vmClasses::ConstantCallSite_klass());
1432 }
1433 static bool is_instance(oop obj);
1434 };
1435
1436 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1437
1438 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1439 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1440 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1441
1442 class DependencyContext;
1443
1444 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1445 friend class JavaClasses;
1446
1447 private:
1448 static int _vmdependencies_offset;
1449 static int _last_cleanup_offset;
1450
1451 static void compute_offsets();
1452
1453 public:
1454 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1455 // Accessors
1456 static DependencyContext vmdependencies(oop context);
1457
1458 // Testers
1459 static bool is_subclass(Klass* klass) {
1460 return klass->is_subclass_of(vmClasses::Context_klass());
1461 }
1462 static bool is_instance(oop obj);
1463 };
1464
1465 // Interface to java.security.AccessControlContext objects
1466
1467 class java_security_AccessControlContext: AllStatic {
1468 private:
1469 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1470 // so we compute the offsets at startup rather than hard-wiring them.
1471 static int _context_offset;
1472 static int _privilegedContext_offset;
1473 static int _isPrivileged_offset;
1474 static int _isAuthorized_offset;
1475
1476 static void compute_offsets();
1477 public:
1478 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1479 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1480
1481 // Debugging/initialization
1482 friend class JavaClasses;
1483 };
1484
1485
1486 // Interface to java.lang.ClassLoader objects
1487
1488 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1489 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1490
1491 class java_lang_ClassLoader : AllStatic {
1492 private:
1493 static int _loader_data_offset;
1494 static int _parent_offset;
1495 static int _parallelCapable_offset;
1496 static int _name_offset;
1497 static int _nameAndId_offset;
1498 static int _unnamedModule_offset;
1499
1500 static void compute_offsets();
1501
1502 public:
1503 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1504
1505 static ClassLoaderData* loader_data_acquire(oop loader);
1506 static ClassLoaderData* loader_data(oop loader);
1507 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1508
1509 static oop parent(oop loader);
1510 static oop name(oop loader);
1511 static oop nameAndId(oop loader);
1512 static bool isAncestor(oop loader, oop cl);
1513
1514 // Support for parallelCapable field
1515 static bool parallelCapable(oop the_class_mirror);
1516
1517 static bool is_trusted_loader(oop loader);
1518
1519 // Return true if this is one of the class loaders associated with
1520 // the generated bytecodes for reflection.
1521 static bool is_reflection_class_loader(oop loader);
1522
1523 // Fix for 4474172
1524 static oop non_reflection_class_loader(oop loader);
1525
1526 // Testers
1527 static bool is_subclass(Klass* klass) {
1528 return klass->is_subclass_of(vmClasses::ClassLoader_klass());
1529 }
1530 static bool is_instance(oop obj);
1531
1532 static oop unnamedModule(oop loader);
1533
1534 // Debugging
1535 friend class JavaClasses;
1536 };
1537
1538
1539 // Interface to java.lang.System objects
1540
1541 class java_lang_System : AllStatic {
1542 private:
1543 static int _static_in_offset;
1544 static int _static_out_offset;
1545 static int _static_err_offset;
1546 static int _static_security_offset;
1547 static int _static_allow_security_offset;
1548 static int _static_never_offset;
1549
1550 public:
1551 static int in_offset() { CHECK_INIT(_static_in_offset); }
1552 static int out_offset() { CHECK_INIT(_static_out_offset); }
1553 static int err_offset() { CHECK_INIT(_static_err_offset); }
1554 static bool allow_security_manager();
1555 static bool has_security_manager();
1556
1557 static void compute_offsets();
1558 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1559
1560 // Debugging
1561 friend class JavaClasses;
1562 };
1563
1564
1565 // Interface to java.lang.StackTraceElement objects
1566
1567 class java_lang_StackTraceElement: AllStatic {
1568 private:
1569 static int _declaringClassObject_offset;
1570 static int _classLoaderName_offset;
1571 static int _moduleName_offset;
1572 static int _moduleVersion_offset;
1573 static int _declaringClass_offset;
1574 static int _methodName_offset;
1575 static int _fileName_offset;
1576 static int _lineNumber_offset;
1577
1578 // Setters
1579 static void set_classLoaderName(oop element, oop value);
1580 static void set_moduleName(oop element, oop value);
1581 static void set_moduleVersion(oop element, oop value);
1582 static void set_declaringClass(oop element, oop value);
1583 static void set_methodName(oop element, oop value);
1584 static void set_fileName(oop element, oop value);
1585 static void set_lineNumber(oop element, int value);
1586 static void set_declaringClassObject(oop element, oop value);
1587
1588 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1589 const methodHandle& method, int bci,
1590 Symbol*& source, oop& source_file, int& line_number, TRAPS);
1591
1592 public:
1593 // Create an instance of StackTraceElement
1594 static oop create(const methodHandle& method, int bci, TRAPS);
1595
1596 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1597 int version, int bci, Symbol* name, TRAPS);
1598
1599 static void compute_offsets();
1600 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1601
1602 #if INCLUDE_JVMCI
1603 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1604 #endif
1605
1606 // Debugging
1607 friend class JavaClasses;
1608 };
1609
1610
1611 class Backtrace: AllStatic {
1612 public:
1613 // Helper backtrace functions to store bci|version together.
1614 static int merge_bci_and_version(int bci, int version);
1615 static int merge_mid_and_cpref(int mid, int cpref);
1616 static int bci_at(unsigned int merged);
1617 static int version_at(unsigned int merged);
1618 static int mid_at(unsigned int merged);
1619 static int cpref_at(unsigned int merged);
1620 static int get_line_number(Method* method, int bci);
1621 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1622
1623 // Debugging
1624 friend class JavaClasses;
1625 };
1626
1627 // Interface to java.lang.StackFrameInfo objects
1628
1629 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1630 macro(java_lang_StackFrameInfo, version, short_signature, false)
1631
1632 class java_lang_StackFrameInfo: AllStatic {
1633 private:
1634 static int _memberName_offset;
1635 static int _bci_offset;
1636 static int _version_offset;
1637 static int _contScope_offset;
1638
1639 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1640
1641 public:
1642 // Setters
1643 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS);
1644 static void set_bci(oop info, int value);
1645
1646 static void set_version(oop info, short value);
1647 static void set_contScope(oop info, oop value);
1648
1649 static void compute_offsets();
1650 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1651
1652 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1653
1654 // Debugging
1655 friend class JavaClasses;
1656 };
1657
1658 class java_lang_LiveStackFrameInfo: AllStatic {
1659 private:
1660 static int _monitors_offset;
1661 static int _locals_offset;
1662 static int _operands_offset;
1663 static int _mode_offset;
1664
1665 public:
1666 static void set_monitors(oop info, oop value);
1667 static void set_locals(oop info, oop value);
1668 static void set_operands(oop info, oop value);
1669 static void set_mode(oop info, int value);
1670
1671 static void compute_offsets();
1672 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1673
1674 // Debugging
1675 friend class JavaClasses;
1676 };
1677
1678 // Interface to java.lang.reflect.RecordComponent objects
1679
1680 class java_lang_reflect_RecordComponent: AllStatic {
1681 private:
1682 static int _clazz_offset;
1683 static int _name_offset;
1684 static int _type_offset;
1685 static int _accessor_offset;
1686 static int _signature_offset;
1687 static int _annotations_offset;
1688 static int _typeAnnotations_offset;
1689
1690 // Setters
1691 static void set_clazz(oop element, oop value);
1692 static void set_name(oop element, oop value);
1693 static void set_type(oop element, oop value);
1694 static void set_accessor(oop element, oop value);
1695 static void set_signature(oop element, oop value);
1696 static void set_annotations(oop element, oop value);
1697 static void set_typeAnnotations(oop element, oop value);
1698
1699 public:
1700 // Create an instance of RecordComponent
1701 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1702
1703 static void compute_offsets();
1704 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1705
1706 // Debugging
1707 friend class JavaClasses;
1708 };
1709
1710
1711 // Interface to java.lang.AssertionStatusDirectives objects
1712
1713 class java_lang_AssertionStatusDirectives: AllStatic {
1714 private:
1715 static int _classes_offset;
1716 static int _classEnabled_offset;
1717 static int _packages_offset;
1718 static int _packageEnabled_offset;
1719 static int _deflt_offset;
1720
1721 public:
1722 // Setters
1723 static void set_classes(oop obj, oop val);
1724 static void set_classEnabled(oop obj, oop val);
1725 static void set_packages(oop obj, oop val);
1726 static void set_packageEnabled(oop obj, oop val);
1727 static void set_deflt(oop obj, bool val);
1728
1729 static void compute_offsets();
1730 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1731
1732 // Debugging
1733 friend class JavaClasses;
1734 };
1735
1736
1737 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1738 private:
1739 static int _owner_offset;
1740 public:
1741 static void compute_offsets();
1742 static oop get_owner_threadObj(oop obj);
1743 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1744 };
1745
1746 // Interface to jdk.internal.misc.UnsafeConsants
1747
1748 class jdk_internal_misc_UnsafeConstants : AllStatic {
1749 public:
1750 static void set_unsafe_constants();
1751 static void compute_offsets() { }
1752 static void serialize_offsets(SerializeClosure* f) { }
1753 };
1754
1755 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects
1756
1757 class vector_VectorPayload : AllStatic {
1758 private:
1759 static int _payload_offset;
1760 public:
1761 static void set_payload(oop o, oop val);
1762
1763 static void compute_offsets();
1764 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1765
1766 // Testers
1767 static bool is_subclass(Klass* klass) {
1768 return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass());
1769 }
1770 static bool is_instance(oop obj);
1771 };
1772
1773 class java_lang_Integer : AllStatic {
1774 public:
1775 static jint value(oop obj);
1776 };
1777
1778 class java_lang_Long : AllStatic {
1779 public:
1780 static jlong value(oop obj);
1781 };
1782
1783 class java_lang_Character : AllStatic {
1784 public:
1785 static jchar value(oop obj);
1786 };
1787
1788 class java_lang_Short : AllStatic {
1789 public:
1790 static jshort value(oop obj);
1791 };
1792
1793 class java_lang_Byte : AllStatic {
1794 public:
1795 static jbyte value(oop obj);
1796 };
1797
1798 class java_lang_Boolean : AllStatic {
1799 private:
1800 static int _static_TRUE_offset;
1801 static int _static_FALSE_offset;
1802 public:
1803 static Symbol* symbol();
1804 static void compute_offsets(InstanceKlass* k);
1805 static oop get_TRUE(InstanceKlass *k);
1806 static oop get_FALSE(InstanceKlass *k);
1807 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1808 static jboolean value(oop obj);
1809 };
1810
1811 class java_lang_Integer_IntegerCache : AllStatic {
1812 private:
1813 static int _static_cache_offset;
1814 public:
1815 static Symbol* symbol();
1816 static void compute_offsets(InstanceKlass* k);
1817 static objArrayOop cache(InstanceKlass *k);
1818 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1819 };
1820
1821 class java_lang_Long_LongCache : AllStatic {
1822 private:
1823 static int _static_cache_offset;
1824 public:
1825 static Symbol* symbol();
1826 static void compute_offsets(InstanceKlass* k);
1827 static objArrayOop cache(InstanceKlass *k);
1828 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1829 };
1830
1831 class java_lang_Character_CharacterCache : AllStatic {
1832 private:
1833 static int _static_cache_offset;
1834 public:
1835 static Symbol* symbol();
1836 static void compute_offsets(InstanceKlass* k);
1837 static objArrayOop cache(InstanceKlass *k);
1838 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1839 };
1840
1841 class java_lang_Short_ShortCache : AllStatic {
1842 private:
1843 static int _static_cache_offset;
1844 public:
1845 static Symbol* symbol();
1846 static void compute_offsets(InstanceKlass* k);
1847 static objArrayOop cache(InstanceKlass *k);
1848 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1849 };
1850
1851 class java_lang_Byte_ByteCache : AllStatic {
1852 private:
1853 static int _static_cache_offset;
1854 public:
1855 static Symbol* symbol();
1856 static void compute_offsets(InstanceKlass* k);
1857 static objArrayOop cache(InstanceKlass *k);
1858 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1859 };
1860
1861 // Interface to java.lang.InternalError objects
1862
1863 #define INTERNALERROR_INJECTED_FIELDS(macro) \
1864 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1865
1866 class java_lang_InternalError : AllStatic {
1867 private:
1868 static int _during_unsafe_access_offset;
1869 public:
1870 static jboolean during_unsafe_access(oop internal_error);
1871 static void set_during_unsafe_access(oop internal_error);
1872 static void compute_offsets();
1873 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1874 };
1875
1876 // Use to declare fields that need to be injected into Java classes
1877 // for the JVM to use. The name_index and signature_index are
1878 // declared in vmSymbols. The may_be_java flag is used to declare
1879 // fields that might already exist in Java but should be injected if
1880 // they don't. Otherwise the field is unconditionally injected and
1881 // the JVM uses the injected one. This is to ensure that name
1882 // collisions don't occur. In general may_be_java should be false
1883 // unless there's a good reason.
1884
1885 class InjectedField {
1886 public:
1887 const vmClassID klass_id;
1888 const vmSymbolID name_index;
1889 const vmSymbolID signature_index;
1890 const bool may_be_java;
1891
1892
1893 Klass* klass() const { return vmClasses::klass_at(klass_id); }
1894 Symbol* name() const { return lookup_symbol(name_index); }
1895 Symbol* signature() const { return lookup_symbol(signature_index); }
1896
1897 int compute_offset();
1898
1899 // Find the Symbol for this index
1900 static Symbol* lookup_symbol(vmSymbolID symbol_index) {
1901 return Symbol::vm_symbol_at(symbol_index);
1902 }
1903 };
1904
1905
1906 // Interface to hard-coded offset checking
1907
1908 enum class InjectedFieldID : int;
1909
1910 class JavaClasses : AllStatic {
1911 private:
1912
1913 static InjectedField _injected_fields[];
1914
1915 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1916 public:
1917
1918 static int compute_injected_offset(InjectedFieldID id);
1919
1920 static void compute_offsets();
1921 static void check_offsets() PRODUCT_RETURN;
1922 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1923 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1924 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1925
1926 static void compute_offset(int &dest_offset,
1927 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
1928 bool is_static = false);
1929 static void compute_offset(int& dest_offset, InstanceKlass* ik,
1930 const char* name_string, Symbol* signature_symbol,
1931 bool is_static = false);
1932 };
1933
1934 #undef CHECK_INIT
1935
1936 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP