1 /*
2 * Copyright (c) 1997, 2021, 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/oop.hpp"
30 #include "oops/instanceKlass.hpp"
31 #include "oops/symbol.hpp"
32 #include "runtime/os.hpp"
33 #include "utilities/vmEnums.hpp"
34
35 class RecordComponent;
36
37 // Interface for manipulating the basic Java classes.
38
39 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
40 f(java_lang_Class) \
41 f(java_lang_String) \
42 f(java_lang_ref_Reference) \
43 //end
44
45 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
46 f(java_lang_System) \
47 f(java_lang_ClassLoader) \
48 f(java_lang_Throwable) \
49 f(java_lang_Thread) \
50 f(java_lang_ThreadGroup) \
51 f(java_lang_InternalError) \
52 f(java_lang_AssertionStatusDirectives) \
53 f(java_lang_ref_SoftReference) \
54 f(java_lang_invoke_MethodHandle) \
55 f(java_lang_invoke_DirectMethodHandle) \
56 f(java_lang_invoke_MemberName) \
57 f(java_lang_invoke_ResolvedMethodName) \
58 f(java_lang_invoke_LambdaForm) \
59 f(java_lang_invoke_MethodType) \
60 f(java_lang_invoke_CallSite) \
61 f(java_lang_invoke_ConstantCallSite) \
62 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
63 f(java_security_AccessControlContext) \
64 f(java_lang_reflect_AccessibleObject) \
65 f(java_lang_reflect_Method) \
66 f(java_lang_reflect_Constructor) \
67 f(java_lang_reflect_Field) \
68 f(java_lang_reflect_RecordComponent) \
69 f(reflect_ConstantPool) \
70 f(reflect_UnsafeStaticFieldAccessorImpl) \
71 f(java_lang_reflect_Parameter) \
72 f(java_lang_Module) \
73 f(java_lang_StackTraceElement) \
74 f(java_lang_StackFrameInfo) \
75 f(java_lang_LiveStackFrameInfo) \
76 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
77 f(jdk_internal_invoke_NativeEntryPoint) \
78 f(jdk_internal_misc_UnsafeConstants) \
79 f(java_lang_boxing_object) \
80 f(vector_VectorPayload) \
81 //end
82
83 #define BASIC_JAVA_CLASSES_DO(f) \
84 BASIC_JAVA_CLASSES_DO_PART1(f) \
85 BASIC_JAVA_CLASSES_DO_PART2(f)
86
87 #define CHECK_INIT(offset) assert(offset != 0, "should be initialized"); return offset;
88
89 // Interface to java.lang.Object objects
90
91 class java_lang_Object : AllStatic {
92 public:
93 static void register_natives(TRAPS);
94 };
95
96 // Interface to java.lang.String objects
97
98 // The flags field is a collection of bits representing boolean values used
99 // internally by the VM.
100 #define STRING_INJECTED_FIELDS(macro) \
101 macro(java_lang_String, flags, byte_signature, false)
102
103 class java_lang_String : AllStatic {
104 private:
105 static int _value_offset;
106 static int _hash_offset;
107 static int _hashIsZero_offset;
108 static int _coder_offset;
109 static int _flags_offset;
110
111 static bool _initialized;
112
113 static Handle basic_create(int length, bool byte_arr, TRAPS);
114
115 static inline void set_coder(oop string, jbyte coder);
116
117 // Bitmasks for values in the injected flags field.
118 static const uint8_t _deduplication_forbidden_mask = 1 << 0;
119 static const uint8_t _deduplication_requested_mask = 1 << 1;
120
121 static int flags_offset() { CHECK_INIT(_flags_offset); }
122 // Return the address of the injected flags field.
123 static inline uint8_t* flags_addr(oop java_string);
124 // Test whether the designated bit of the injected flags field is set.
125 static inline bool is_flag_set(oop java_string, uint8_t flag_mask);
126 // Atomically test and set the designated bit of the injected flags field,
127 // returning true if the bit was already set.
128 static bool test_and_set_flag(oop java_string, uint8_t flag_mask);
129
130 static inline unsigned int hash_code_impl(oop java_string, bool update);
131
132 public:
133
134 // Coders
135 enum Coder {
136 CODER_LATIN1 = 0,
137 CODER_UTF16 = 1
138 };
139
140 static void compute_offsets();
141 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
142
143 // Instance creation
144 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
145 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
146 static Handle create_from_str(const char* utf8_str, TRAPS);
147 static oop create_oop_from_str(const char* utf8_str, TRAPS);
148 static Handle create_from_symbol(Symbol* symbol, TRAPS);
149 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
150
151 static void set_compact_strings(bool value);
152
153 static int value_offset() { CHECK_INIT(_value_offset); }
154 static int coder_offset() { CHECK_INIT(_coder_offset); }
155
156 static inline void set_value_raw(oop string, typeArrayOop buffer);
157 static inline void set_value(oop string, typeArrayOop buffer);
158
159 // Set the deduplication_forbidden flag true. This flag is sticky; once
160 // set it never gets cleared. This is set when a String is interned in
161 // the StringTable, to prevent string deduplication from changing the
162 // String's value array.
163 static inline void set_deduplication_forbidden(oop java_string);
164
165 // Test and set the deduplication_requested flag. Returns the old value
166 // of the flag. This flag is sticky; once set it never gets cleared.
167 // Some GCs may use this flag when deciding whether to request
168 // deduplication of a String, to avoid multiple requests for the same
169 // object.
170 static inline bool test_and_set_deduplication_requested(oop java_string);
171
172 // Accessors
173 static inline typeArrayOop value(oop java_string);
174 static inline typeArrayOop value_no_keepalive(oop java_string);
175 static inline bool hash_is_set(oop string);
176 static inline bool is_latin1(oop java_string);
177 static inline bool deduplication_forbidden(oop java_string);
178 static inline bool deduplication_requested(oop java_string);
179 static inline int length(oop java_string);
180 static inline int length(oop java_string, typeArrayOop string_value);
181 static int utf8_length(oop java_string);
182 static int utf8_length(oop java_string, typeArrayOop string_value);
183
184 // String converters
185 static char* as_utf8_string(oop java_string);
186 static char* as_utf8_string(oop java_string, int& length);
187 static char* as_utf8_string_full(oop java_string, char* buf, int buflen, int& length);
188 static char* as_utf8_string(oop java_string, char* buf, int buflen);
189 static char* as_utf8_string(oop java_string, int start, int len);
190 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
191 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
192 static char* as_platform_dependent_str(Handle java_string, TRAPS);
193 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
194 static jchar* as_unicode_string_or_null(oop java_string, int& length);
195 // produce an ascii string with all other values quoted using \u####
196 static char* as_quoted_ascii(oop java_string);
197
198 // Compute the hash value for a java.lang.String object which would
199 // contain the characters passed in.
200 //
201 // As the hash value used by the String object itself, in
202 // String.hashCode(). This value is normally calculated in Java code
203 // in the String.hashCode method(), but is precomputed for String
204 // objects in the shared archive file.
205 // hash P(31) from Kernighan & Ritchie
206 //
207 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
208 static unsigned int hash_code(const jchar* s, int len) {
209 unsigned int h = 0;
210 while (len-- > 0) {
211 h = 31*h + (unsigned int) *s;
212 s++;
213 }
214 return h;
215 }
216
217 static unsigned int hash_code(const jbyte* s, int len) {
218 unsigned int h = 0;
219 while (len-- > 0) {
220 h = 31*h + (((unsigned int) *s) & 0xFF);
221 s++;
222 }
223 return h;
224 }
225
226 static unsigned int hash_code(oop java_string);
227 static unsigned int hash_code_noupdate(oop java_string);
228
229 static bool equals(oop java_string, const jchar* chars, int len);
230 static bool equals(oop str1, oop str2);
231 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
232
233 // Conversion between '.' and '/' formats, and allocate a String from the result.
234 static Handle externalize_classname(Symbol* java_name, TRAPS);
235
236 // Conversion
237 static Symbol* as_symbol(oop java_string);
238 static Symbol* as_symbol_or_null(oop java_string);
239
240 // Tester
241 static inline bool is_instance(oop obj);
242
243 // Debugging
244 static void print(oop java_string, outputStream* st);
245 friend class JavaClasses;
246 friend class StringTable;
247 };
248
249
250 // Interface to java.lang.Class objects
251
252 #define CLASS_INJECTED_FIELDS(macro) \
253 macro(java_lang_Class, klass, intptr_signature, false) \
254 macro(java_lang_Class, array_klass, intptr_signature, false) \
255 macro(java_lang_Class, oop_size, int_signature, false) \
256 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
257 macro(java_lang_Class, protection_domain, object_signature, false) \
258 macro(java_lang_Class, signers, object_signature, false) \
259 macro(java_lang_Class, source_file, object_signature, false) \
260
261 class java_lang_Class : AllStatic {
262 friend class VMStructs;
263 friend class JVMCIVMStructs;
264
265 private:
266
267 // The fake offsets are added by the class loader when java.lang.Class is loaded
268
269 static int _klass_offset;
270 static int _array_klass_offset;
271
272 static int _oop_size_offset;
273 static int _static_oop_field_count_offset;
274
275 static int _protection_domain_offset;
276 static int _init_lock_offset;
277 static int _signers_offset;
278 static int _class_loader_offset;
279 static int _module_offset;
280 static int _component_mirror_offset;
281 static int _name_offset;
282 static int _source_file_offset;
283 static int _classData_offset;
284 static int _classRedefinedCount_offset;
285
286 static bool _offsets_computed;
287
288 static GrowableArray<Klass*>* _fixup_mirror_list;
289 static GrowableArray<Klass*>* _fixup_module_field_list;
290
291 static void set_init_lock(oop java_class, oop init_lock);
292 static void set_protection_domain(oop java_class, oop protection_domain);
293 static void set_class_loader(oop java_class, oop class_loader);
294 static void set_component_mirror(oop java_class, oop comp_mirror);
295 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
296 Handle classData, TRAPS);
297 static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
298 public:
299 static void allocate_fixup_lists();
300 static void compute_offsets();
301
302 // Instance creation
303 static void create_mirror(Klass* k, Handle class_loader, Handle module,
304 Handle protection_domain, Handle classData, TRAPS);
305 static void fixup_mirror(Klass* k, TRAPS);
306 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
307 static void update_archived_primitive_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
308 static void update_archived_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
309
310 // Archiving
311 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
312 static void archive_basic_type_mirrors() NOT_CDS_JAVA_HEAP_RETURN;
313 static oop archive_mirror(Klass* k) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
314 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror)
315 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
316 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
317 Handle protection_domain,
318 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
319
320 static void fixup_module_field(Klass* k, Handle module);
321
322 // Conversion
323 static Klass* as_Klass(oop java_class);
324 static void set_klass(oop java_class, Klass* klass);
325 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
326 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
327 static void print_signature(oop java_class, outputStream *st);
328 static const char* as_external_name(oop java_class);
329 // Testing
330 static bool is_instance(oop obj);
331
332 static bool is_primitive(oop java_class);
333 static BasicType primitive_type(oop java_class);
334 static oop primitive_mirror(BasicType t);
335 // JVM_NewArray support
336 static Klass* array_klass_acquire(oop java_class);
337 static void release_set_array_klass(oop java_class, Klass* klass);
338 // compiler support for class operations
339 static int klass_offset() { CHECK_INIT(_klass_offset); }
340 static int array_klass_offset() { CHECK_INIT(_array_klass_offset); }
341 // Support for classRedefinedCount field
342 static int classRedefinedCount(oop the_class_mirror);
343 static void set_classRedefinedCount(oop the_class_mirror, int value);
344
345 // Support for embedded per-class oops
346 static oop protection_domain(oop java_class);
347 static oop init_lock(oop java_class);
348 static void clear_init_lock(oop java_class) {
349 set_init_lock(java_class, NULL);
350 }
351 static oop component_mirror(oop java_class);
352 static objArrayOop signers(oop java_class);
353 static void set_signers(oop java_class, objArrayOop signers);
354 static oop class_data(oop java_class);
355 static void set_class_data(oop java_class, oop classData);
356
357 static int component_mirror_offset() { return _component_mirror_offset; }
358
359 static oop class_loader(oop java_class);
360 static void set_module(oop java_class, oop module);
361 static oop module(oop java_class);
362
363 static oop name(Handle java_class, TRAPS);
364
365 static oop source_file(oop java_class);
366 static void set_source_file(oop java_class, oop source_file);
367
368 static size_t oop_size(oop java_class);
369 static void set_oop_size(HeapWord* java_class, size_t size);
370 static int static_oop_field_count(oop java_class);
371 static void set_static_oop_field_count(oop java_class, int size);
372
373 static GrowableArray<Klass*>* fixup_mirror_list() {
374 return _fixup_mirror_list;
375 }
376 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
377 _fixup_mirror_list = v;
378 }
379
380 static GrowableArray<Klass*>* fixup_module_field_list() {
381 return _fixup_module_field_list;
382 }
383 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
384 _fixup_module_field_list = v;
385 }
386
387 // Debugging
388 friend class JavaClasses;
389 };
390
391 // Interface to java.lang.Thread objects
392
393 class java_lang_Thread : AllStatic {
394 private:
395 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
396 // so we compute the offsets at startup rather than hard-wiring them.
397 static int _name_offset;
398 static int _group_offset;
399 static int _contextClassLoader_offset;
400 static int _inheritedAccessControlContext_offset;
401 static int _priority_offset;
402 static int _eetop_offset;
403 static int _interrupted_offset;
404 static int _daemon_offset;
405 static int _stillborn_offset;
406 static int _stackSize_offset;
407 static int _tid_offset;
408 static int _thread_status_offset;
409 static int _park_blocker_offset;
410
411 static void compute_offsets();
412
413 public:
414 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
415
416 // Returns the JavaThread associated with the thread obj
417 static JavaThread* thread(oop java_thread);
418 // Set JavaThread for instance
419 static void set_thread(oop java_thread, JavaThread* thread);
420 // Interrupted status
421 static bool interrupted(oop java_thread);
422 static void set_interrupted(oop java_thread, bool val);
423 // Name
424 static oop name(oop java_thread);
425 static void set_name(oop java_thread, oop name);
426 // Priority
427 static ThreadPriority priority(oop java_thread);
428 static void set_priority(oop java_thread, ThreadPriority priority);
429 // Thread group
430 static oop threadGroup(oop java_thread);
431 // Stillborn
432 static bool is_stillborn(oop java_thread);
433 static void set_stillborn(oop java_thread);
434 // Alive (NOTE: this is not really a field, but provides the correct
435 // definition without doing a Java call)
436 static bool is_alive(oop java_thread);
437 // Daemon
438 static bool is_daemon(oop java_thread);
439 static void set_daemon(oop java_thread);
440 // Context ClassLoader
441 static oop context_class_loader(oop java_thread);
442 // Control context
443 static oop inherited_access_control_context(oop java_thread);
444 // Stack size hint
445 static jlong stackSize(oop java_thread);
446 // Thread ID
447 static jlong thread_id(oop java_thread);
448
449 // Blocker object responsible for thread parking
450 static oop park_blocker(oop java_thread);
451
452 // Write thread status info to threadStatus field of java.lang.Thread.
453 static void set_thread_status(oop java_thread_oop, JavaThreadStatus status);
454 // Read thread status info from threadStatus field of java.lang.Thread.
455 static JavaThreadStatus get_thread_status(oop java_thread_oop);
456
457 static const char* thread_status_name(oop java_thread_oop);
458
459 // Debugging
460 friend class JavaClasses;
461 };
462
463 // Interface to java.lang.ThreadGroup objects
464
465 class java_lang_ThreadGroup : AllStatic {
466 private:
467 static int _parent_offset;
468 static int _name_offset;
469 static int _threads_offset;
470 static int _groups_offset;
471 static int _maxPriority_offset;
472 static int _destroyed_offset;
473 static int _daemon_offset;
474 static int _nthreads_offset;
475 static int _ngroups_offset;
476
477 static void compute_offsets();
478
479 public:
480 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
481
482 // parent ThreadGroup
483 static oop parent(oop java_thread_group);
484 // name
485 static const char* name(oop java_thread_group);
486 // ("name as oop" accessor is not necessary)
487 // Number of threads in group
488 static int nthreads(oop java_thread_group);
489 // threads
490 static objArrayOop threads(oop java_thread_group);
491 // Number of threads in group
492 static int ngroups(oop java_thread_group);
493 // groups
494 static objArrayOop groups(oop java_thread_group);
495 // maxPriority in group
496 static ThreadPriority maxPriority(oop java_thread_group);
497 // Destroyed
498 static bool is_destroyed(oop java_thread_group);
499 // Daemon
500 static bool is_daemon(oop java_thread_group);
501 // Debugging
502 friend class JavaClasses;
503 };
504
505
506
507 // Interface to java.lang.Throwable objects
508
509 class java_lang_Throwable: AllStatic {
510 friend class BacktraceBuilder;
511 friend class BacktraceIterator;
512
513 private:
514 // Trace constants
515 enum {
516 trace_methods_offset = 0,
517 trace_bcis_offset = 1,
518 trace_mirrors_offset = 2,
519 trace_names_offset = 3,
520 trace_next_offset = 4,
521 trace_hidden_offset = 5,
522 trace_size = 6,
523 trace_chunk_size = 32
524 };
525
526 static int _backtrace_offset;
527 static int _detailMessage_offset;
528 static int _stackTrace_offset;
529 static int _depth_offset;
530 static int _cause_offset;
531 static int _static_unassigned_stacktrace_offset;
532
533 // StackTrace (programmatic access, new since 1.4)
534 static void clear_stacktrace(oop throwable);
535 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
536 static void set_stacktrace(oop throwable, oop st_element_array);
537 static oop unassigned_stacktrace();
538
539 public:
540 // Backtrace
541 static oop backtrace(oop throwable);
542 static void set_backtrace(oop throwable, oop value);
543 static int depth(oop throwable);
544 static void set_depth(oop throwable, int value);
545 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
546 // Message
547 static oop message(oop throwable);
548 static oop cause(oop throwable);
549 static void set_message(oop throwable, oop value);
550 static Symbol* detail_message(oop throwable);
551 static void print_stack_element(outputStream *st, Method* method, int bci);
552
553 static void compute_offsets();
554 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
555
556 // Allocate space for backtrace (created but stack trace not filled in)
557 static void allocate_backtrace(Handle throwable, TRAPS);
558 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
559 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
560 // Fill in current stack trace, can cause GC
561 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
562 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
563 // Programmatic access to stack trace
564 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
565
566 // For recreating class initialization error exceptions.
567 static Handle get_cause_with_stack_trace(Handle throwable, TRAPS);
568
569 // Printing
570 static void print(oop throwable, outputStream* st);
571 static void print_stack_trace(Handle throwable, outputStream* st);
572 static void java_printStackTrace(Handle throwable, TRAPS);
573 // Debugging
574 friend class JavaClasses;
575 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
576 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
577 };
578
579
580 // Interface to java.lang.reflect.AccessibleObject objects
581
582 class java_lang_reflect_AccessibleObject: AllStatic {
583 private:
584 // Note that to reduce dependencies on the JDK we compute these
585 // offsets at run-time.
586 static int _override_offset;
587
588 static void compute_offsets();
589
590 public:
591 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
592
593 // Accessors
594 static jboolean override(oop reflect);
595 static void set_override(oop reflect, jboolean value);
596
597 // Debugging
598 friend class JavaClasses;
599 };
600
601
602 // Interface to java.lang.reflect.Method objects
603
604 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
605 private:
606 // Note that to reduce dependencies on the JDK we compute these
607 // offsets at run-time.
608 static int _clazz_offset;
609 static int _name_offset;
610 static int _returnType_offset;
611 static int _parameterTypes_offset;
612 static int _exceptionTypes_offset;
613 static int _slot_offset;
614 static int _modifiers_offset;
615 static int _signature_offset;
616 static int _annotations_offset;
617 static int _parameter_annotations_offset;
618 static int _annotation_default_offset;
619
620 static void compute_offsets();
621 public:
622 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
623
624 // Allocation
625 static Handle create(TRAPS);
626
627 // Accessors
628 static oop clazz(oop reflect);
629 static void set_clazz(oop reflect, oop value);
630
631 static void set_name(oop method, oop value);
632
633 static oop return_type(oop method);
634 static void set_return_type(oop method, oop value);
635
636 static oop parameter_types(oop method);
637 static void set_parameter_types(oop method, oop value);
638
639 static int slot(oop reflect);
640 static void set_slot(oop reflect, int value);
641
642 static void set_exception_types(oop method, oop value);
643 static void set_modifiers(oop method, int value);
644 static void set_signature(oop method, oop value);
645 static void set_annotations(oop method, oop value);
646 static void set_parameter_annotations(oop method, oop value);
647 static void set_annotation_default(oop method, oop value);
648
649 // Debugging
650 friend class JavaClasses;
651 };
652
653
654 // Interface to java.lang.reflect.Constructor objects
655
656 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
657 private:
658 // Note that to reduce dependencies on the JDK we compute these
659 // offsets at run-time.
660 static int _clazz_offset;
661 static int _parameterTypes_offset;
662 static int _exceptionTypes_offset;
663 static int _slot_offset;
664 static int _modifiers_offset;
665 static int _signature_offset;
666 static int _annotations_offset;
667 static int _parameter_annotations_offset;
668
669 static void compute_offsets();
670 public:
671 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
672
673 // Allocation
674 static Handle create(TRAPS);
675
676 // Accessors
677 static oop clazz(oop reflect);
678 static void set_clazz(oop reflect, oop value);
679
680 static oop parameter_types(oop constructor);
681 static void set_parameter_types(oop constructor, oop value);
682
683 static int slot(oop reflect);
684 static void set_slot(oop reflect, int value);
685
686 static void set_exception_types(oop constructor, oop value);
687 static void set_modifiers(oop constructor, int value);
688 static void set_signature(oop constructor, oop value);
689 static void set_annotations(oop constructor, oop value);
690 static void set_parameter_annotations(oop method, oop value);
691
692 // Debugging
693 friend class JavaClasses;
694 };
695
696
697 // Interface to java.lang.reflect.Field objects
698
699 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
700 private:
701 // Note that to reduce dependencies on the JDK we compute these
702 // offsets at run-time.
703 static int _clazz_offset;
704 static int _name_offset;
705 static int _type_offset;
706 static int _slot_offset;
707 static int _modifiers_offset;
708 static int _trusted_final_offset;
709 static int _signature_offset;
710 static int _annotations_offset;
711
712 static void compute_offsets();
713
714 public:
715 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
716
717 // Allocation
718 static Handle create(TRAPS);
719
720 // Accessors
721 static oop clazz(oop reflect);
722 static void set_clazz(oop reflect, oop value);
723
724 static oop name(oop field);
725 static void set_name(oop field, oop value);
726
727 static oop type(oop field);
728 static void set_type(oop field, oop value);
729
730 static int slot(oop reflect);
731 static void set_slot(oop reflect, int value);
732
733 static int modifiers(oop field);
734 static void set_modifiers(oop field, int value);
735
736 static void set_trusted_final(oop field);
737
738 static void set_signature(oop constructor, oop value);
739 static void set_annotations(oop constructor, oop value);
740
741 // Debugging
742 friend class JavaClasses;
743 };
744
745 class java_lang_reflect_Parameter {
746 private:
747 // Note that to reduce dependencies on the JDK we compute these
748 // offsets at run-time.
749 static int _name_offset;
750 static int _modifiers_offset;
751 static int _index_offset;
752 static int _executable_offset;
753
754 static void compute_offsets();
755
756 public:
757 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
758
759 // Allocation
760 static Handle create(TRAPS);
761
762 // Accessors
763 static oop name(oop field);
764 static void set_name(oop field, oop value);
765
766 static int index(oop reflect);
767 static void set_index(oop reflect, int value);
768
769 static int modifiers(oop reflect);
770 static void set_modifiers(oop reflect, int value);
771
772 static oop executable(oop constructor);
773 static void set_executable(oop constructor, oop value);
774
775 friend class JavaClasses;
776 };
777
778 #define MODULE_INJECTED_FIELDS(macro) \
779 macro(java_lang_Module, module_entry, intptr_signature, false)
780
781 class java_lang_Module {
782 private:
783 static int _loader_offset;
784 static int _name_offset;
785 static int _module_entry_offset;
786
787 static void compute_offsets();
788
789 public:
790 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
791
792 // Allocation
793 static Handle create(Handle loader, Handle module_name, TRAPS);
794
795 // Testers
796 static bool is_instance(oop obj);
797
798 // Accessors
799 static oop loader(oop module);
800 static void set_loader(oop module, oop value);
801
802 static oop name(oop module);
803 static void set_name(oop module, oop value);
804
805 static ModuleEntry* module_entry(oop module);
806 static ModuleEntry* module_entry_raw(oop module);
807 static void set_module_entry(oop module, ModuleEntry* module_entry);
808
809 friend class JavaClasses;
810 };
811
812 // Interface to jdk.internal.reflect.ConstantPool objects
813 class reflect_ConstantPool {
814 private:
815 // Note that to reduce dependencies on the JDK we compute these
816 // offsets at run-time.
817 static int _oop_offset;
818
819 static void compute_offsets();
820
821 public:
822 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
823
824 // Allocation
825 static Handle create(TRAPS);
826
827 // Accessors
828 static void set_cp(oop reflect, ConstantPool* value);
829 static int oop_offset() { CHECK_INIT(_oop_offset); }
830
831 static ConstantPool* get_cp(oop reflect);
832
833 // Debugging
834 friend class JavaClasses;
835 };
836
837 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
838 class reflect_UnsafeStaticFieldAccessorImpl {
839 private:
840 static int _base_offset;
841 static void compute_offsets();
842
843 public:
844 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
845
846 static int base_offset() { CHECK_INIT(_base_offset); }
847
848 // Debugging
849 friend class JavaClasses;
850 };
851
852 // Interface to java.lang primitive type boxing objects:
853 // - java.lang.Boolean
854 // - java.lang.Character
855 // - java.lang.Float
856 // - java.lang.Double
857 // - java.lang.Byte
858 // - java.lang.Short
859 // - java.lang.Integer
860 // - java.lang.Long
861
862 // This could be separated out into 8 individual classes.
863
864 class java_lang_boxing_object: AllStatic {
865 private:
866 static int _value_offset;
867 static int _long_value_offset;
868
869 static void compute_offsets();
870 static oop initialize_and_allocate(BasicType type, TRAPS);
871 public:
872 // Allocation. Returns a boxed value, or NULL for invalid type.
873 static oop create(BasicType type, jvalue* value, TRAPS);
874 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
875 static BasicType get_value(oop box, jvalue* value);
876 static BasicType set_value(oop box, jvalue* value);
877 static BasicType basic_type(oop box);
878 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
879 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
880 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
881 static void print(BasicType type, jvalue* value, outputStream* st);
882
883 static int value_offset(BasicType type) {
884 return is_double_word_type(type) ? _long_value_offset : _value_offset;
885 }
886
887 static void serialize_offsets(SerializeClosure* f);
888
889 // Debugging
890 friend class JavaClasses;
891 };
892
893
894
895 // Interface to java.lang.ref.Reference objects
896
897 class java_lang_ref_Reference: AllStatic {
898 static int _referent_offset;
899 static int _queue_offset;
900 static int _next_offset;
901 static int _discovered_offset;
902
903 static bool _offsets_initialized;
904
905 public:
906 // Accessors
907 static inline oop weak_referent_no_keepalive(oop ref);
908 static inline oop phantom_referent_no_keepalive(oop ref);
909 static inline oop unknown_referent_no_keepalive(oop ref);
910 static inline void clear_referent(oop ref);
911 static inline HeapWord* referent_addr_raw(oop ref);
912 static inline oop next(oop ref);
913 static inline void set_next(oop ref, oop value);
914 static inline void set_next_raw(oop ref, oop value);
915 static inline HeapWord* next_addr_raw(oop ref);
916 static inline oop discovered(oop ref);
917 static inline void set_discovered(oop ref, oop value);
918 static inline void set_discovered_raw(oop ref, oop value);
919 static inline HeapWord* discovered_addr_raw(oop ref);
920 static bool is_referent_field(oop obj, ptrdiff_t offset);
921 static inline bool is_final(oop ref);
922 static inline bool is_phantom(oop ref);
923
924 static int referent_offset() { CHECK_INIT(_referent_offset); }
925 static int queue_offset() { CHECK_INIT(_queue_offset); }
926 static int next_offset() { CHECK_INIT(_next_offset); }
927 static int discovered_offset() { CHECK_INIT(_discovered_offset); }
928
929 static void compute_offsets();
930 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
931 };
932
933
934 // Interface to java.lang.ref.SoftReference objects
935
936 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
937 static int _timestamp_offset;
938 static int _static_clock_offset;
939
940 public:
941 // Accessors
942 static jlong timestamp(oop ref);
943
944 // Accessors for statics
945 static jlong clock();
946 static void set_clock(jlong value);
947
948 static void compute_offsets();
949 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
950 };
951
952 // Interface to java.lang.invoke.MethodHandle objects
953
954 class java_lang_invoke_MethodHandle: AllStatic {
955 friend class JavaClasses;
956
957 private:
958 static int _type_offset; // the MethodType of this MH
959 static int _form_offset; // the LambdaForm of this MH
960
961 static void compute_offsets();
962
963 public:
964 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
965
966 // Accessors
967 static oop type(oop mh);
968 static void set_type(oop mh, oop mtype);
969
970 static oop form(oop mh);
971 static void set_form(oop mh, oop lform);
972
973 // Testers
974 static bool is_subclass(Klass* klass) {
975 return klass->is_subclass_of(vmClasses::MethodHandle_klass());
976 }
977 static bool is_instance(oop obj);
978
979 // Accessors for code generation:
980 static int type_offset() { CHECK_INIT(_type_offset); }
981 static int form_offset() { CHECK_INIT(_form_offset); }
982 };
983
984 // Interface to java.lang.invoke.DirectMethodHandle objects
985
986 class java_lang_invoke_DirectMethodHandle: AllStatic {
987 friend class JavaClasses;
988
989 private:
990 static int _member_offset; // the MemberName of this DMH
991
992 static void compute_offsets();
993
994 public:
995 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
996
997 // Accessors
998 static oop member(oop mh);
999
1000 // Testers
1001 static bool is_subclass(Klass* klass) {
1002 return klass->is_subclass_of(vmClasses::DirectMethodHandle_klass());
1003 }
1004 static bool is_instance(oop obj);
1005
1006 // Accessors for code generation:
1007 static int member_offset() { CHECK_INIT(_member_offset); }
1008 };
1009
1010 // Interface to java.lang.invoke.LambdaForm objects
1011 // (These are a private interface for managing adapter code generation.)
1012
1013 class java_lang_invoke_LambdaForm: AllStatic {
1014 friend class JavaClasses;
1015
1016 private:
1017 static int _vmentry_offset; // type is MemberName
1018
1019 static void compute_offsets();
1020
1021 public:
1022 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1023
1024 // Accessors
1025 static oop vmentry(oop lform);
1026
1027 // Testers
1028 static bool is_subclass(Klass* klass) {
1029 return vmClasses::LambdaForm_klass() != NULL &&
1030 klass->is_subclass_of(vmClasses::LambdaForm_klass());
1031 }
1032 static bool is_instance(oop obj);
1033
1034 // Accessors for code generation:
1035 static int vmentry_offset() { CHECK_INIT(_vmentry_offset); }
1036 };
1037
1038 // Interface to java.lang.invoke.NativeEntryPoint objects
1039 // (These are a private interface for managing adapter code generation.)
1040
1041 class jdk_internal_invoke_NativeEntryPoint: AllStatic {
1042 friend class JavaClasses;
1043
1044 private:
1045 static int _shadow_space_offset;
1046 static int _argMoves_offset;
1047 static int _returnMoves_offset;
1048 static int _need_transition_offset;
1049 static int _method_type_offset;
1050 static int _name_offset;
1051
1052 static void compute_offsets();
1053
1054 public:
1055 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1056
1057 // Accessors
1058 static jint shadow_space(oop entry);
1059 static oop argMoves(oop entry);
1060 static oop returnMoves(oop entry);
1061 static jboolean need_transition(oop entry);
1062 static oop method_type(oop entry);
1063 static oop name(oop entry);
1064
1065 // Testers
1066 static bool is_subclass(Klass* klass) {
1067 return vmClasses::NativeEntryPoint_klass() != NULL &&
1068 klass->is_subclass_of(vmClasses::NativeEntryPoint_klass());
1069 }
1070 static bool is_instance(oop obj);
1071
1072 // Accessors for code generation:
1073 static int shadow_space_offset_in_bytes() { return _shadow_space_offset; }
1074 static int argMoves_offset_in_bytes() { return _argMoves_offset; }
1075 static int returnMoves_offset_in_bytes() { return _returnMoves_offset; }
1076 static int need_transition_offset_in_bytes() { return _need_transition_offset; }
1077 static int method_type_offset_in_bytes() { return _method_type_offset; }
1078 static int name_offset_in_bytes() { return _name_offset; }
1079 };
1080
1081 // Interface to java.lang.invoke.MemberName objects
1082 // (These are a private interface for Java code to query the class hierarchy.)
1083
1084 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1085 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1086 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1087
1088 class java_lang_invoke_ResolvedMethodName : AllStatic {
1089 friend class JavaClasses;
1090
1091 static int _vmtarget_offset;
1092 static int _vmholder_offset;
1093
1094 static void compute_offsets();
1095 public:
1096 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1097
1098 static int vmtarget_offset() { CHECK_INIT(_vmtarget_offset); }
1099
1100 static Method* vmtarget(oop resolved_method);
1101 static void set_vmtarget(oop resolved_method, Method* method);
1102
1103 static void set_vmholder(oop resolved_method, oop holder);
1104
1105 // find or create resolved member name
1106 static oop find_resolved_method(const methodHandle& m, TRAPS);
1107
1108 static bool is_instance(oop resolved_method);
1109 };
1110
1111
1112 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1113 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1114
1115
1116 class java_lang_invoke_MemberName: AllStatic {
1117 friend class JavaClasses;
1118
1119 private:
1120 // From java.lang.invoke.MemberName:
1121 // private Class<?> clazz; // class in which the method is defined
1122 // private String name; // may be null if not yet materialized
1123 // private Object type; // may be null if not yet materialized
1124 // private int flags; // modifier bits; see reflect.Modifier
1125 // private ResolvedMethodName method; // holds VM-specific target value
1126 // private intptr_t vmindex; // member index within class or interface
1127 static int _clazz_offset;
1128 static int _name_offset;
1129 static int _type_offset;
1130 static int _flags_offset;
1131 static int _method_offset;
1132 static int _vmindex_offset;
1133
1134 static void compute_offsets();
1135
1136 public:
1137 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1138 // Accessors
1139 static oop clazz(oop mname);
1140 static void set_clazz(oop mname, oop clazz);
1141
1142 static oop type(oop mname);
1143 static void set_type(oop mname, oop type);
1144
1145 static oop name(oop mname);
1146 static void set_name(oop mname, oop name);
1147
1148 static int flags(oop mname);
1149 static void set_flags(oop mname, int flags);
1150
1151 // Link through ResolvedMethodName field to get Method*
1152 static Method* vmtarget(oop mname);
1153 static void set_method(oop mname, oop method);
1154
1155 static intptr_t vmindex(oop mname);
1156 static void set_vmindex(oop mname, intptr_t index);
1157
1158 // Testers
1159 static bool is_subclass(Klass* klass) {
1160 return klass->is_subclass_of(vmClasses::MemberName_klass());
1161 }
1162 static bool is_instance(oop obj);
1163
1164 static bool is_method(oop obj);
1165
1166 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1167 enum {
1168 MN_IS_METHOD = 0x00010000, // method (not constructor)
1169 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1170 MN_IS_FIELD = 0x00040000, // field
1171 MN_IS_TYPE = 0x00080000, // nested type
1172 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1173 MN_TRUSTED_FINAL = 0x00200000, // trusted final field
1174 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1175 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1176 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1177 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1178 MN_SEARCH_INTERFACES = 0x00200000, // walk implemented interfaces
1179 MN_NESTMATE_CLASS = 0x00000001,
1180 MN_HIDDEN_CLASS = 0x00000002,
1181 MN_STRONG_LOADER_LINK = 0x00000004,
1182 MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1183 // Lookup modes
1184 MN_MODULE_MODE = 0x00000010,
1185 MN_UNCONDITIONAL_MODE = 0x00000020,
1186 MN_TRUSTED_MODE = -1
1187 };
1188
1189 // Accessors for code generation:
1190 static int clazz_offset() { CHECK_INIT(_clazz_offset); }
1191 static int type_offset() { CHECK_INIT(_type_offset); }
1192 static int flags_offset() { CHECK_INIT(_flags_offset); }
1193 static int method_offset() { CHECK_INIT(_method_offset); }
1194 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1195 };
1196
1197
1198 // Interface to java.lang.invoke.MethodType objects
1199
1200 class java_lang_invoke_MethodType: AllStatic {
1201 friend class JavaClasses;
1202
1203 private:
1204 static int _rtype_offset;
1205 static int _ptypes_offset;
1206
1207 static void compute_offsets();
1208
1209 public:
1210 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1211 // Accessors
1212 static oop rtype(oop mt);
1213 static objArrayOop ptypes(oop mt);
1214
1215 static oop ptype(oop mt, int index);
1216 static int ptype_count(oop mt);
1217
1218 static int ptype_slot_count(oop mt); // extra counts for long/double
1219 static int rtype_slot_count(oop mt); // extra counts for long/double
1220
1221 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1222 static void print_signature(oop mt, outputStream* st);
1223
1224 static bool is_instance(oop obj);
1225
1226 static bool equals(oop mt1, oop mt2);
1227
1228 // Accessors for code generation:
1229 static int rtype_offset() { CHECK_INIT(_rtype_offset); }
1230 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); }
1231 };
1232
1233
1234 // Interface to java.lang.invoke.CallSite objects
1235
1236 class java_lang_invoke_CallSite: AllStatic {
1237 friend class JavaClasses;
1238
1239 private:
1240 static int _target_offset;
1241 static int _context_offset;
1242
1243 static void compute_offsets();
1244
1245 public:
1246 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1247 // Accessors
1248 static oop target( oop site);
1249 static void set_target( oop site, oop target);
1250 static void set_target_volatile( oop site, oop target);
1251
1252 static oop context_no_keepalive(oop site);
1253
1254 // Testers
1255 static bool is_subclass(Klass* klass) {
1256 return klass->is_subclass_of(vmClasses::CallSite_klass());
1257 }
1258 static bool is_instance(oop obj);
1259
1260 // Accessors for code generation:
1261 static int target_offset() { CHECK_INIT(_target_offset); }
1262 static int context_offset() { CHECK_INIT(_context_offset); }
1263 };
1264
1265 // Interface to java.lang.invoke.ConstantCallSite objects
1266
1267 class java_lang_invoke_ConstantCallSite: AllStatic {
1268 friend class JavaClasses;
1269
1270 private:
1271 static int _is_frozen_offset;
1272
1273 static void compute_offsets();
1274
1275 public:
1276 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1277 // Accessors
1278 static jboolean is_frozen(oop site);
1279
1280 // Testers
1281 static bool is_subclass(Klass* klass) {
1282 return klass->is_subclass_of(vmClasses::ConstantCallSite_klass());
1283 }
1284 static bool is_instance(oop obj);
1285 };
1286
1287 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1288
1289 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1290 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1291 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1292
1293 class DependencyContext;
1294
1295 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1296 friend class JavaClasses;
1297
1298 private:
1299 static int _vmdependencies_offset;
1300 static int _last_cleanup_offset;
1301
1302 static void compute_offsets();
1303
1304 public:
1305 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1306 // Accessors
1307 static DependencyContext vmdependencies(oop context);
1308
1309 // Testers
1310 static bool is_subclass(Klass* klass) {
1311 return klass->is_subclass_of(vmClasses::Context_klass());
1312 }
1313 static bool is_instance(oop obj);
1314 };
1315
1316 // Interface to java.security.AccessControlContext objects
1317
1318 class java_security_AccessControlContext: AllStatic {
1319 private:
1320 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1321 // so we compute the offsets at startup rather than hard-wiring them.
1322 static int _context_offset;
1323 static int _privilegedContext_offset;
1324 static int _isPrivileged_offset;
1325 static int _isAuthorized_offset;
1326
1327 static void compute_offsets();
1328 public:
1329 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1330 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1331
1332 // Debugging/initialization
1333 friend class JavaClasses;
1334 };
1335
1336
1337 // Interface to java.lang.ClassLoader objects
1338
1339 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1340 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1341
1342 class java_lang_ClassLoader : AllStatic {
1343 private:
1344 static int _loader_data_offset;
1345 static int _parent_offset;
1346 static int _parallelCapable_offset;
1347 static int _name_offset;
1348 static int _nameAndId_offset;
1349 static int _unnamedModule_offset;
1350
1351 static void compute_offsets();
1352
1353 public:
1354 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1355
1356 static ClassLoaderData* loader_data_acquire(oop loader);
1357 static ClassLoaderData* loader_data(oop loader);
1358 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1359
1360 static oop parent(oop loader);
1361 static oop name(oop loader);
1362 static oop nameAndId(oop loader);
1363 static bool isAncestor(oop loader, oop cl);
1364
1365 // Support for parallelCapable field
1366 static bool parallelCapable(oop the_class_mirror);
1367
1368 static bool is_trusted_loader(oop loader);
1369
1370 // Return true if this is one of the class loaders associated with
1371 // the generated bytecodes for reflection.
1372 static bool is_reflection_class_loader(oop loader);
1373
1374 // Fix for 4474172
1375 static oop non_reflection_class_loader(oop loader);
1376
1377 // Testers
1378 static bool is_subclass(Klass* klass) {
1379 return klass->is_subclass_of(vmClasses::ClassLoader_klass());
1380 }
1381 static bool is_instance(oop obj);
1382
1383 static oop unnamedModule(oop loader);
1384
1385 // Debugging
1386 friend class JavaClasses;
1387 };
1388
1389
1390 // Interface to java.lang.System objects
1391
1392 class java_lang_System : AllStatic {
1393 private:
1394 static int _static_in_offset;
1395 static int _static_out_offset;
1396 static int _static_err_offset;
1397 static int _static_security_offset;
1398 static int _static_allow_security_offset;
1399 static int _static_never_offset;
1400
1401 public:
1402 static int in_offset() { CHECK_INIT(_static_in_offset); }
1403 static int out_offset() { CHECK_INIT(_static_out_offset); }
1404 static int err_offset() { CHECK_INIT(_static_err_offset); }
1405 static bool allow_security_manager();
1406 static bool has_security_manager();
1407
1408 static void compute_offsets();
1409 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1410
1411 // Debugging
1412 friend class JavaClasses;
1413 };
1414
1415
1416 // Interface to java.lang.StackTraceElement objects
1417
1418 class java_lang_StackTraceElement: AllStatic {
1419 private:
1420 static int _declaringClassObject_offset;
1421 static int _classLoaderName_offset;
1422 static int _moduleName_offset;
1423 static int _moduleVersion_offset;
1424 static int _declaringClass_offset;
1425 static int _methodName_offset;
1426 static int _fileName_offset;
1427 static int _lineNumber_offset;
1428
1429 // Setters
1430 static void set_classLoaderName(oop element, oop value);
1431 static void set_moduleName(oop element, oop value);
1432 static void set_moduleVersion(oop element, oop value);
1433 static void set_declaringClass(oop element, oop value);
1434 static void set_methodName(oop element, oop value);
1435 static void set_fileName(oop element, oop value);
1436 static void set_lineNumber(oop element, int value);
1437 static void set_declaringClassObject(oop element, oop value);
1438
1439 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1440 const methodHandle& method, int bci,
1441 Symbol*& source, oop& source_file, int& line_number, TRAPS);
1442
1443 public:
1444 // Create an instance of StackTraceElement
1445 static oop create(const methodHandle& method, int bci, TRAPS);
1446
1447 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1448 int version, int bci, Symbol* name, TRAPS);
1449
1450 static void compute_offsets();
1451 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1452
1453 #if INCLUDE_JVMCI
1454 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1455 #endif
1456
1457 // Debugging
1458 friend class JavaClasses;
1459 };
1460
1461
1462 class Backtrace: AllStatic {
1463 public:
1464 // Helper backtrace functions to store bci|version together.
1465 static int merge_bci_and_version(int bci, int version);
1466 static int merge_mid_and_cpref(int mid, int cpref);
1467 static int bci_at(unsigned int merged);
1468 static int version_at(unsigned int merged);
1469 static int mid_at(unsigned int merged);
1470 static int cpref_at(unsigned int merged);
1471 static int get_line_number(Method* method, int bci);
1472 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1473
1474 // Debugging
1475 friend class JavaClasses;
1476 };
1477
1478 // Interface to java.lang.StackFrameInfo objects
1479
1480 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1481 macro(java_lang_StackFrameInfo, version, short_signature, false)
1482
1483 class java_lang_StackFrameInfo: AllStatic {
1484 private:
1485 static int _memberName_offset;
1486 static int _bci_offset;
1487 static int _version_offset;
1488
1489 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1490
1491 public:
1492 // Setters
1493 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1494 static void set_bci(oop info, int value);
1495
1496 static void set_version(oop info, short value);
1497
1498 static void compute_offsets();
1499 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1500
1501 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1502
1503 // Debugging
1504 friend class JavaClasses;
1505 };
1506
1507 class java_lang_LiveStackFrameInfo: AllStatic {
1508 private:
1509 static int _monitors_offset;
1510 static int _locals_offset;
1511 static int _operands_offset;
1512 static int _mode_offset;
1513
1514 public:
1515 static void set_monitors(oop info, oop value);
1516 static void set_locals(oop info, oop value);
1517 static void set_operands(oop info, oop value);
1518 static void set_mode(oop info, int value);
1519
1520 static void compute_offsets();
1521 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1522
1523 // Debugging
1524 friend class JavaClasses;
1525 };
1526
1527 // Interface to java.lang.reflect.RecordComponent objects
1528
1529 class java_lang_reflect_RecordComponent: AllStatic {
1530 private:
1531 static int _clazz_offset;
1532 static int _name_offset;
1533 static int _type_offset;
1534 static int _accessor_offset;
1535 static int _signature_offset;
1536 static int _annotations_offset;
1537 static int _typeAnnotations_offset;
1538
1539 // Setters
1540 static void set_clazz(oop element, oop value);
1541 static void set_name(oop element, oop value);
1542 static void set_type(oop element, oop value);
1543 static void set_accessor(oop element, oop value);
1544 static void set_signature(oop element, oop value);
1545 static void set_annotations(oop element, oop value);
1546 static void set_typeAnnotations(oop element, oop value);
1547
1548 public:
1549 // Create an instance of RecordComponent
1550 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1551
1552 static void compute_offsets();
1553 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1554
1555 // Debugging
1556 friend class JavaClasses;
1557 };
1558
1559
1560 // Interface to java.lang.AssertionStatusDirectives objects
1561
1562 class java_lang_AssertionStatusDirectives: AllStatic {
1563 private:
1564 static int _classes_offset;
1565 static int _classEnabled_offset;
1566 static int _packages_offset;
1567 static int _packageEnabled_offset;
1568 static int _deflt_offset;
1569
1570 public:
1571 // Setters
1572 static void set_classes(oop obj, oop val);
1573 static void set_classEnabled(oop obj, oop val);
1574 static void set_packages(oop obj, oop val);
1575 static void set_packageEnabled(oop obj, oop val);
1576 static void set_deflt(oop obj, bool val);
1577
1578 static void compute_offsets();
1579 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1580
1581 // Debugging
1582 friend class JavaClasses;
1583 };
1584
1585
1586 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1587 private:
1588 static int _owner_offset;
1589 public:
1590 static void compute_offsets();
1591 static oop get_owner_threadObj(oop obj);
1592 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1593 };
1594
1595 // Interface to jdk.internal.misc.UnsafeConsants
1596
1597 class jdk_internal_misc_UnsafeConstants : AllStatic {
1598 public:
1599 static void set_unsafe_constants();
1600 static void compute_offsets() { }
1601 static void serialize_offsets(SerializeClosure* f) { }
1602 };
1603
1604 // Interface to jdk.internal.vm.vector.VectorSupport.VectorPayload objects
1605
1606 class vector_VectorPayload : AllStatic {
1607 private:
1608 static int _payload_offset;
1609 public:
1610 static void set_payload(oop o, oop val);
1611
1612 static void compute_offsets();
1613 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1614
1615 // Testers
1616 static bool is_subclass(Klass* klass) {
1617 return klass->is_subclass_of(vmClasses::vector_VectorPayload_klass());
1618 }
1619 static bool is_instance(oop obj);
1620 };
1621
1622 class java_lang_Integer : AllStatic {
1623 public:
1624 static jint value(oop obj);
1625 };
1626
1627 class java_lang_Long : AllStatic {
1628 public:
1629 static jlong value(oop obj);
1630 };
1631
1632 class java_lang_Character : AllStatic {
1633 public:
1634 static jchar value(oop obj);
1635 };
1636
1637 class java_lang_Short : AllStatic {
1638 public:
1639 static jshort value(oop obj);
1640 };
1641
1642 class java_lang_Byte : AllStatic {
1643 public:
1644 static jbyte value(oop obj);
1645 };
1646
1647 class java_lang_Boolean : AllStatic {
1648 private:
1649 static int _static_TRUE_offset;
1650 static int _static_FALSE_offset;
1651 public:
1652 static Symbol* symbol();
1653 static void compute_offsets(InstanceKlass* k);
1654 static oop get_TRUE(InstanceKlass *k);
1655 static oop get_FALSE(InstanceKlass *k);
1656 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1657 static jboolean value(oop obj);
1658 };
1659
1660 class java_lang_Integer_IntegerCache : AllStatic {
1661 private:
1662 static int _static_cache_offset;
1663 public:
1664 static Symbol* symbol();
1665 static void compute_offsets(InstanceKlass* k);
1666 static objArrayOop cache(InstanceKlass *k);
1667 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1668 };
1669
1670 class java_lang_Long_LongCache : AllStatic {
1671 private:
1672 static int _static_cache_offset;
1673 public:
1674 static Symbol* symbol();
1675 static void compute_offsets(InstanceKlass* k);
1676 static objArrayOop cache(InstanceKlass *k);
1677 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1678 };
1679
1680 class java_lang_Character_CharacterCache : AllStatic {
1681 private:
1682 static int _static_cache_offset;
1683 public:
1684 static Symbol* symbol();
1685 static void compute_offsets(InstanceKlass* k);
1686 static objArrayOop cache(InstanceKlass *k);
1687 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1688 };
1689
1690 class java_lang_Short_ShortCache : AllStatic {
1691 private:
1692 static int _static_cache_offset;
1693 public:
1694 static Symbol* symbol();
1695 static void compute_offsets(InstanceKlass* k);
1696 static objArrayOop cache(InstanceKlass *k);
1697 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1698 };
1699
1700 class java_lang_Byte_ByteCache : AllStatic {
1701 private:
1702 static int _static_cache_offset;
1703 public:
1704 static Symbol* symbol();
1705 static void compute_offsets(InstanceKlass* k);
1706 static objArrayOop cache(InstanceKlass *k);
1707 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1708 };
1709
1710
1711 // Interface to java.lang.InternalError objects
1712
1713 #define INTERNALERROR_INJECTED_FIELDS(macro) \
1714 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1715
1716 class java_lang_InternalError : AllStatic {
1717 private:
1718 static int _during_unsafe_access_offset;
1719 public:
1720 static jboolean during_unsafe_access(oop internal_error);
1721 static void set_during_unsafe_access(oop internal_error);
1722 static void compute_offsets();
1723 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1724 };
1725
1726 // Use to declare fields that need to be injected into Java classes
1727 // for the JVM to use. The name_index and signature_index are
1728 // declared in vmSymbols. The may_be_java flag is used to declare
1729 // fields that might already exist in Java but should be injected if
1730 // they don't. Otherwise the field is unconditionally injected and
1731 // the JVM uses the injected one. This is to ensure that name
1732 // collisions don't occur. In general may_be_java should be false
1733 // unless there's a good reason.
1734
1735 class InjectedField {
1736 public:
1737 const vmClassID klass_id;
1738 const vmSymbolID name_index;
1739 const vmSymbolID signature_index;
1740 const bool may_be_java;
1741
1742
1743 Klass* klass() const { return vmClasses::klass_at(klass_id); }
1744 Symbol* name() const { return lookup_symbol(name_index); }
1745 Symbol* signature() const { return lookup_symbol(signature_index); }
1746
1747 int compute_offset();
1748
1749 // Find the Symbol for this index
1750 static Symbol* lookup_symbol(vmSymbolID symbol_index) {
1751 return Symbol::vm_symbol_at(symbol_index);
1752 }
1753 };
1754
1755 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1756 klass##_##name##_enum,
1757
1758 #define ALL_INJECTED_FIELDS(macro) \
1759 STRING_INJECTED_FIELDS(macro) \
1760 CLASS_INJECTED_FIELDS(macro) \
1761 CLASSLOADER_INJECTED_FIELDS(macro) \
1762 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1763 MEMBERNAME_INJECTED_FIELDS(macro) \
1764 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1765 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1766 MODULE_INJECTED_FIELDS(macro) \
1767 INTERNALERROR_INJECTED_FIELDS(macro)
1768
1769
1770 // Interface to hard-coded offset checking
1771
1772 class JavaClasses : AllStatic {
1773 private:
1774
1775 static InjectedField _injected_fields[];
1776
1777 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1778 public:
1779 enum InjectedFieldID {
1780 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1781 MAX_enum
1782 };
1783
1784 static int compute_injected_offset(InjectedFieldID id);
1785
1786 static void compute_offsets();
1787 static void check_offsets() PRODUCT_RETURN;
1788 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1789 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1790 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1791 };
1792
1793 #undef DECLARE_INJECTED_FIELD_ENUM
1794
1795 #undef CHECK_INIT
1796 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP