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