1 /*
2 * Copyright (c) 1997, 2020, 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/systemDictionary.hpp"
29 #include "jvmtifiles/jvmti.h"
30 #include "oops/oop.hpp"
31 #include "runtime/os.hpp"
32
33 class RecordComponent;
34
35 // Interface for manipulating the basic Java classes.
36
37 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
38 f(java_lang_Class) \
39 f(java_lang_String) \
40 f(java_lang_ref_Reference) \
41 //end
42
43 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
44 f(java_lang_System) \
45 f(java_lang_ClassLoader) \
46 f(java_lang_Throwable) \
47 f(java_lang_Thread) \
48 f(java_lang_ThreadGroup) \
49 f(java_lang_AssertionStatusDirectives) \
50 f(java_lang_ref_SoftReference) \
51 f(java_lang_invoke_MethodHandle) \
52 f(java_lang_invoke_DirectMethodHandle) \
53 f(java_lang_invoke_MemberName) \
54 f(java_lang_invoke_ResolvedMethodName) \
55 f(java_lang_invoke_LambdaForm) \
56 f(java_lang_invoke_MethodType) \
57 f(java_lang_invoke_CallSite) \
58 f(java_lang_invoke_ConstantCallSite) \
59 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
60 f(java_security_AccessControlContext) \
61 f(java_lang_reflect_AccessibleObject) \
62 f(java_lang_reflect_Method) \
63 f(java_lang_reflect_Constructor) \
64 f(java_lang_reflect_Field) \
65 f(java_lang_reflect_RecordComponent) \
66 f(java_nio_Buffer) \
67 f(reflect_ConstantPool) \
68 f(reflect_UnsafeStaticFieldAccessorImpl) \
69 f(java_lang_reflect_Parameter) \
70 f(java_lang_Module) \
71 f(java_lang_StackTraceElement) \
72 f(java_lang_StackFrameInfo) \
73 f(java_lang_LiveStackFrameInfo) \
74 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
75 f(jdk_internal_misc_UnsafeConstants) \
76 f(java_lang_boxing_object) \
77 //end
78
79 #define BASIC_JAVA_CLASSES_DO(f) \
80 BASIC_JAVA_CLASSES_DO_PART1(f) \
81 BASIC_JAVA_CLASSES_DO_PART2(f)
82
83 #define CHECK_INIT(offset) assert(offset != 0, "should be initialized"); return offset;
84
85 // Interface to java.lang.Object objects
86
87 class java_lang_Object : AllStatic {
88 public:
89 static void register_natives(TRAPS);
90 };
91
92 // Interface to java.lang.String objects
93
94 class java_lang_String : AllStatic {
95 private:
96 static int _value_offset;
97 static int _hash_offset;
98 static int _hashIsZero_offset;
99 static int _coder_offset;
100
101 static bool _initialized;
102
103 static Handle basic_create(int length, bool byte_arr, TRAPS);
104
105 static inline void set_coder(oop string, jbyte coder);
106
107 public:
108
109 // Coders
110 enum Coder {
111 CODER_LATIN1 = 0,
112 CODER_UTF16 = 1
113 };
114
115 static void compute_offsets();
116 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
117
118 // Instance creation
119 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
120 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
121 static Handle create_from_str(const char* utf8_str, TRAPS);
122 static oop create_oop_from_str(const char* utf8_str, TRAPS);
123 static Handle create_from_symbol(Symbol* symbol, TRAPS);
124 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
125 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
126
127 static void set_compact_strings(bool value);
128
129 static int value_offset() { CHECK_INIT(_value_offset); }
130 static int coder_offset() { CHECK_INIT(_coder_offset); }
131
132 static inline void set_value_raw(oop string, typeArrayOop buffer);
133 static inline void set_value(oop string, typeArrayOop buffer);
134
135 // Accessors
136 static inline typeArrayOop value(oop java_string);
137 static inline typeArrayOop value_no_keepalive(oop java_string);
138 static inline bool hash_is_set(oop string);
139 static inline bool is_latin1(oop java_string);
140 static inline int length(oop java_string);
141 static inline int length(oop java_string, typeArrayOop string_value);
142 static int utf8_length(oop java_string);
143 static int utf8_length(oop java_string, typeArrayOop string_value);
144
145 // String converters
146 static char* as_utf8_string(oop java_string);
147 static char* as_utf8_string(oop java_string, int& length);
148 static char* as_utf8_string_full(oop java_string, char* buf, int buflen, int& length);
149 static char* as_utf8_string(oop java_string, char* buf, int buflen);
150 static char* as_utf8_string(oop java_string, int start, int len);
151 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
152 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
153 static char* as_platform_dependent_str(Handle java_string, TRAPS);
154 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
155 // produce an ascii string with all other values quoted using \u####
156 static char* as_quoted_ascii(oop java_string);
157
158 // Compute the hash value for a java.lang.String object which would
159 // contain the characters passed in.
160 //
161 // As the hash value used by the String object itself, in
162 // String.hashCode(). This value is normally calculated in Java code
163 // in the String.hashCode method(), but is precomputed for String
164 // objects in the shared archive file.
165 // hash P(31) from Kernighan & Ritchie
166 //
167 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
168 static unsigned int hash_code(const jchar* s, int len) {
169 unsigned int h = 0;
170 while (len-- > 0) {
171 h = 31*h + (unsigned int) *s;
172 s++;
173 }
174 return h;
175 }
176
177 static unsigned int hash_code(const jbyte* s, int len) {
178 unsigned int h = 0;
179 while (len-- > 0) {
180 h = 31*h + (((unsigned int) *s) & 0xFF);
181 s++;
182 }
183 return h;
184 }
185
186 static unsigned int hash_code(oop java_string);
187
188 static bool equals(oop java_string, const jchar* chars, int len);
189 static bool equals(oop str1, oop str2);
190 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
191
192 // Conversion between '.' and '/' formats
193 static Handle externalize_classname(Handle java_string, TRAPS) {
194 return char_converter(java_string, JVM_SIGNATURE_SLASH, JVM_SIGNATURE_DOT, THREAD);
195 }
196
197 // Conversion
198 static Symbol* as_symbol(oop java_string);
199 static Symbol* as_symbol_or_null(oop java_string);
200
201 // Testers
202 static bool is_instance(oop obj);
203 static inline bool is_instance_inlined(oop obj);
204
205 // Debugging
206 static void print(oop java_string, outputStream* st);
207 friend class JavaClasses;
208 friend class StringTable;
209 };
210
211
212 // Interface to java.lang.Class objects
213
214 #define CLASS_INJECTED_FIELDS(macro) \
215 macro(java_lang_Class, klass, intptr_signature, false) \
216 macro(java_lang_Class, array_klass, intptr_signature, false) \
217 macro(java_lang_Class, oop_size, int_signature, false) \
218 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
219 macro(java_lang_Class, protection_domain, object_signature, false) \
220 macro(java_lang_Class, signers, object_signature, false) \
221 macro(java_lang_Class, source_file, object_signature, false) \
222
223 class java_lang_Class : AllStatic {
224 friend class VMStructs;
225 friend class JVMCIVMStructs;
226
227 private:
228
229 // The fake offsets are added by the class loader when java.lang.Class is loaded
230
231 static int _klass_offset;
232 static int _array_klass_offset;
233
234 static int _oop_size_offset;
235 static int _static_oop_field_count_offset;
236
237 static int _protection_domain_offset;
238 static int _init_lock_offset;
239 static int _signers_offset;
240 static int _class_loader_offset;
241 static int _module_offset;
242 static int _component_mirror_offset;
243 static int _name_offset;
244 static int _source_file_offset;
245 static int _classData_offset;
246 static int _classRedefinedCount_offset;
247
248 static bool _offsets_computed;
249
250 static GrowableArray<Klass*>* _fixup_mirror_list;
251 static GrowableArray<Klass*>* _fixup_module_field_list;
252
253 static void set_init_lock(oop java_class, oop init_lock);
254 static void set_protection_domain(oop java_class, oop protection_domain);
255 static void set_class_loader(oop java_class, oop class_loader);
256 static void set_component_mirror(oop java_class, oop comp_mirror);
257 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
258 Handle classData, TRAPS);
259 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
260 public:
261 static void allocate_fixup_lists();
262 static void compute_offsets();
263
264 // Instance creation
265 static void create_mirror(Klass* k, Handle class_loader, Handle module,
266 Handle protection_domain, Handle classData, TRAPS);
267 static void fixup_mirror(Klass* k, TRAPS);
268 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
269 static void update_archived_primitive_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
270 static void update_archived_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
271
272 // Archiving
273 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
274 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
275 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
276 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
277 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
278 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
279 Handle protection_domain,
280 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
281
282 static void fixup_module_field(Klass* k, Handle module);
283
284 // Conversion
285 static Klass* as_Klass(oop java_class);
286 static Klass* as_Klass_raw(oop java_class);
287 static void set_klass(oop java_class, Klass* klass);
288 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
289 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
290 static void print_signature(oop java_class, outputStream *st);
291 static const char* as_external_name(oop java_class);
292 // Testing
293 static bool is_instance(oop obj);
294
295 static bool is_primitive(oop java_class);
296 static BasicType primitive_type(oop java_class);
297 static oop primitive_mirror(BasicType t);
298 // JVM_NewArray support
299 static Klass* array_klass_acquire(oop java_class);
300 static void release_set_array_klass(oop java_class, Klass* klass);
301 // compiler support for class operations
302 static int klass_offset() { CHECK_INIT(_klass_offset); }
303 static int array_klass_offset() { CHECK_INIT(_array_klass_offset); }
304 // Support for classRedefinedCount field
305 static int classRedefinedCount(oop the_class_mirror);
306 static void set_classRedefinedCount(oop the_class_mirror, int value);
307
308 // Support for embedded per-class oops
309 static oop protection_domain(oop java_class);
310 static oop init_lock(oop java_class);
311 static void clear_init_lock(oop java_class) {
312 set_init_lock(java_class, NULL);
313 }
314 static oop component_mirror(oop java_class);
315 static objArrayOop signers(oop java_class);
316 static void set_signers(oop java_class, objArrayOop signers);
317 static oop class_data(oop java_class);
318 static void set_class_data(oop java_class, oop classData);
319
320 static oop class_loader(oop java_class);
321 static void set_module(oop java_class, oop module);
322 static oop module(oop java_class);
323
324 static oop name(Handle java_class, TRAPS);
325
326 static oop source_file(oop java_class);
327 static void set_source_file(oop java_class, oop source_file);
328
329 static int oop_size(oop java_class);
330 static int oop_size_raw(oop java_class);
331 static void set_oop_size(HeapWord* java_class, int size);
332 static int static_oop_field_count(oop java_class);
333 static int static_oop_field_count_raw(oop java_class);
334 static void set_static_oop_field_count(oop java_class, int size);
335
336 static GrowableArray<Klass*>* fixup_mirror_list() {
337 return _fixup_mirror_list;
338 }
339 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
340 _fixup_mirror_list = v;
341 }
342
343 static GrowableArray<Klass*>* fixup_module_field_list() {
344 return _fixup_module_field_list;
345 }
346 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
347 _fixup_module_field_list = v;
348 }
349
350 // Debugging
351 friend class JavaClasses;
352 };
353
354 // Interface to java.lang.Thread objects
355
356 class java_lang_Thread : AllStatic {
357 private:
358 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
359 // so we compute the offsets at startup rather than hard-wiring them.
360 static int _name_offset;
361 static int _group_offset;
362 static int _contextClassLoader_offset;
363 static int _inheritedAccessControlContext_offset;
364 static int _priority_offset;
365 static int _eetop_offset;
366 static int _interrupted_offset;
367 static int _daemon_offset;
368 static int _stillborn_offset;
369 static int _stackSize_offset;
370 static int _tid_offset;
371 static int _thread_status_offset;
372 static int _park_blocker_offset;
373
374 static void compute_offsets();
375
376 public:
377 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
378
379 // Instance creation
380 static oop create();
381 // Returns the JavaThread associated with the thread obj
382 static JavaThread* thread(oop java_thread);
383 // Set JavaThread for instance
384 static void set_thread(oop java_thread, JavaThread* thread);
385 // Interrupted status
386 static bool interrupted(oop java_thread);
387 static void set_interrupted(oop java_thread, bool val);
388 // Name
389 static oop name(oop java_thread);
390 static void set_name(oop java_thread, oop name);
391 // Priority
392 static ThreadPriority priority(oop java_thread);
393 static void set_priority(oop java_thread, ThreadPriority priority);
394 // Thread group
395 static oop threadGroup(oop java_thread);
396 // Stillborn
397 static bool is_stillborn(oop java_thread);
398 static void set_stillborn(oop java_thread);
399 // Alive (NOTE: this is not really a field, but provides the correct
400 // definition without doing a Java call)
401 static bool is_alive(oop java_thread);
402 // Daemon
403 static bool is_daemon(oop java_thread);
404 static void set_daemon(oop java_thread);
405 // Context ClassLoader
406 static oop context_class_loader(oop java_thread);
407 // Control context
408 static oop inherited_access_control_context(oop java_thread);
409 // Stack size hint
410 static jlong stackSize(oop java_thread);
411 // Thread ID
412 static jlong thread_id(oop java_thread);
413
414 // Blocker object responsible for thread parking
415 static oop park_blocker(oop java_thread);
416
417 // Java Thread Status for JVMTI and M&M use.
418 // This thread status info is saved in threadStatus field of
419 // java.lang.Thread java class.
420 enum ThreadStatus {
421 NEW = 0,
422 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
423 JVMTI_THREAD_STATE_RUNNABLE,
424 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
425 JVMTI_THREAD_STATE_WAITING +
426 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
427 JVMTI_THREAD_STATE_SLEEPING,
428 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
429 JVMTI_THREAD_STATE_WAITING +
430 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
431 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
432 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
433 JVMTI_THREAD_STATE_WAITING +
434 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
435 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
436 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
437 JVMTI_THREAD_STATE_WAITING +
438 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
439 JVMTI_THREAD_STATE_PARKED,
440 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
441 JVMTI_THREAD_STATE_WAITING +
442 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
443 JVMTI_THREAD_STATE_PARKED,
444 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
445 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
446 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
447 };
448 // Write thread status info to threadStatus field of java.lang.Thread.
449 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
450 // Read thread status info from threadStatus field of java.lang.Thread.
451 static ThreadStatus get_thread_status(oop java_thread_oop);
452
453 static const char* thread_status_name(oop java_thread_oop);
454
455 // Debugging
456 friend class JavaClasses;
457 };
458
459 // Interface to java.lang.ThreadGroup objects
460
461 class java_lang_ThreadGroup : AllStatic {
462 private:
463 static int _parent_offset;
464 static int _name_offset;
465 static int _threads_offset;
466 static int _groups_offset;
467 static int _maxPriority_offset;
468 static int _destroyed_offset;
469 static int _daemon_offset;
470 static int _nthreads_offset;
471 static int _ngroups_offset;
472
473 static void compute_offsets();
474
475 public:
476 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
477
478 // parent ThreadGroup
479 static oop parent(oop java_thread_group);
480 // name
481 static const char* name(oop java_thread_group);
482 // ("name as oop" accessor is not necessary)
483 // Number of threads in group
484 static int nthreads(oop java_thread_group);
485 // threads
486 static objArrayOop threads(oop java_thread_group);
487 // Number of threads in group
488 static int ngroups(oop java_thread_group);
489 // groups
490 static objArrayOop groups(oop java_thread_group);
491 // maxPriority in group
492 static ThreadPriority maxPriority(oop java_thread_group);
493 // Destroyed
494 static bool is_destroyed(oop java_thread_group);
495 // Daemon
496 static bool is_daemon(oop java_thread_group);
497 // Debugging
498 friend class JavaClasses;
499 };
500
501
502
503 // Interface to java.lang.Throwable objects
504
505 class java_lang_Throwable: AllStatic {
506 friend class BacktraceBuilder;
507 friend class BacktraceIterator;
508
509 private:
510 // Trace constants
511 enum {
512 trace_methods_offset = 0,
513 trace_bcis_offset = 1,
514 trace_mirrors_offset = 2,
515 trace_names_offset = 3,
516 trace_next_offset = 4,
517 trace_hidden_offset = 5,
518 trace_size = 6,
519 trace_chunk_size = 32
520 };
521
522 static int _backtrace_offset;
523 static int _detailMessage_offset;
524 static int _stackTrace_offset;
525 static int _depth_offset;
526 static int _static_unassigned_stacktrace_offset;
527
528 // StackTrace (programmatic access, new since 1.4)
529 static void clear_stacktrace(oop throwable);
530 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
531 static void set_stacktrace(oop throwable, oop st_element_array);
532 static oop unassigned_stacktrace();
533
534 public:
535 // Backtrace
536 static oop backtrace(oop throwable);
537 static void set_backtrace(oop throwable, oop value);
538 static int depth(oop throwable);
539 static void set_depth(oop throwable, int value);
540 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
541 // Message
542 static oop message(oop throwable);
543 static void set_message(oop throwable, oop value);
544 static Symbol* detail_message(oop throwable);
545 static void print_stack_element(outputStream *st, Method* method, int bci);
546 static void print_stack_usage(Handle stream);
547
548 static void compute_offsets();
549 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
550
551 // Allocate space for backtrace (created but stack trace not filled in)
552 static void allocate_backtrace(Handle throwable, TRAPS);
553 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
554 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
555 // Fill in current stack trace, can cause GC
556 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
557 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
558 // Programmatic access to stack trace
559 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
560 // Printing
561 static void print(oop throwable, outputStream* st);
562 static void print_stack_trace(Handle throwable, outputStream* st);
563 static void java_printStackTrace(Handle throwable, TRAPS);
564 // Debugging
565 friend class JavaClasses;
566 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
567 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
568 };
569
570
571 // Interface to java.lang.reflect.AccessibleObject objects
572
573 class java_lang_reflect_AccessibleObject: AllStatic {
574 private:
575 // Note that to reduce dependencies on the JDK we compute these
576 // offsets at run-time.
577 static int _override_offset;
578
579 static void compute_offsets();
580
581 public:
582 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
583
584 // Accessors
585 static jboolean override(oop reflect);
586 static void set_override(oop reflect, jboolean value);
587
588 // Debugging
589 friend class JavaClasses;
590 };
591
592
593 // Interface to java.lang.reflect.Method objects
594
595 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
596 private:
597 // Note that to reduce dependencies on the JDK we compute these
598 // offsets at run-time.
599 static int _clazz_offset;
600 static int _name_offset;
601 static int _returnType_offset;
602 static int _parameterTypes_offset;
603 static int _exceptionTypes_offset;
604 static int _slot_offset;
605 static int _modifiers_offset;
606 static int _signature_offset;
607 static int _annotations_offset;
608 static int _parameter_annotations_offset;
609 static int _annotation_default_offset;
610
611 static void compute_offsets();
612 public:
613 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
614
615 // Allocation
616 static Handle create(TRAPS);
617
618 // Accessors
619 static oop clazz(oop reflect);
620 static void set_clazz(oop reflect, oop value);
621
622 static void set_name(oop method, oop value);
623
624 static oop return_type(oop method);
625 static void set_return_type(oop method, oop value);
626
627 static oop parameter_types(oop method);
628 static void set_parameter_types(oop method, oop value);
629
630 static int slot(oop reflect);
631 static void set_slot(oop reflect, int value);
632
633 static void set_exception_types(oop method, oop value);
634 static void set_modifiers(oop method, int value);
635 static void set_signature(oop method, oop value);
636 static void set_annotations(oop method, oop value);
637 static void set_parameter_annotations(oop method, oop value);
638 static void set_annotation_default(oop method, oop value);
639
640 // Debugging
641 friend class JavaClasses;
642 };
643
644
645 // Interface to java.lang.reflect.Constructor objects
646
647 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
648 private:
649 // Note that to reduce dependencies on the JDK we compute these
650 // offsets at run-time.
651 static int _clazz_offset;
652 static int _parameterTypes_offset;
653 static int _exceptionTypes_offset;
654 static int _slot_offset;
655 static int _modifiers_offset;
656 static int _signature_offset;
657 static int _annotations_offset;
658 static int _parameter_annotations_offset;
659
660 static void compute_offsets();
661 public:
662 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
663
664 // Allocation
665 static Handle create(TRAPS);
666
667 // Accessors
668 static oop clazz(oop reflect);
669 static void set_clazz(oop reflect, oop value);
670
671 static oop parameter_types(oop constructor);
672 static void set_parameter_types(oop constructor, oop value);
673
674 static int slot(oop reflect);
675 static void set_slot(oop reflect, int value);
676
677 static void set_exception_types(oop constructor, oop value);
678 static void set_modifiers(oop constructor, int value);
679 static void set_signature(oop constructor, oop value);
680 static void set_annotations(oop constructor, oop value);
681 static void set_parameter_annotations(oop method, oop value);
682
683 // Debugging
684 friend class JavaClasses;
685 };
686
687
688 // Interface to java.lang.reflect.Field objects
689
690 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
691 private:
692 // Note that to reduce dependencies on the JDK we compute these
693 // offsets at run-time.
694 static int _clazz_offset;
695 static int _name_offset;
696 static int _type_offset;
697 static int _slot_offset;
698 static int _modifiers_offset;
699 static int _trusted_final_offset;
700 static int _signature_offset;
701 static int _annotations_offset;
702
703 static void compute_offsets();
704
705 public:
706 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
707
708 // Allocation
709 static Handle create(TRAPS);
710
711 // Accessors
712 static oop clazz(oop reflect);
713 static void set_clazz(oop reflect, oop value);
714
715 static oop name(oop field);
716 static void set_name(oop field, oop value);
717
718 static oop type(oop field);
719 static void set_type(oop field, oop value);
720
721 static int slot(oop reflect);
722 static void set_slot(oop reflect, int value);
723
724 static int modifiers(oop field);
725 static void set_modifiers(oop field, int value);
726
727 static void set_trusted_final(oop field);
728
729 static void set_signature(oop constructor, oop value);
730 static void set_annotations(oop constructor, oop value);
731 static void set_parameter_annotations(oop method, oop value);
732 static void set_annotation_default(oop method, oop value);
733
734 // Debugging
735 friend class JavaClasses;
736 };
737
738 class java_lang_reflect_Parameter {
739 private:
740 // Note that to reduce dependencies on the JDK we compute these
741 // offsets at run-time.
742 static int _name_offset;
743 static int _modifiers_offset;
744 static int _index_offset;
745 static int _executable_offset;
746
747 static void compute_offsets();
748
749 public:
750 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
751
752 // Allocation
753 static Handle create(TRAPS);
754
755 // Accessors
756 static oop name(oop field);
757 static void set_name(oop field, oop value);
758
759 static int index(oop reflect);
760 static void set_index(oop reflect, int value);
761
762 static int modifiers(oop reflect);
763 static void set_modifiers(oop reflect, int value);
764
765 static oop executable(oop constructor);
766 static void set_executable(oop constructor, oop value);
767
768 friend class JavaClasses;
769 };
770
771 #define MODULE_INJECTED_FIELDS(macro) \
772 macro(java_lang_Module, module_entry, intptr_signature, false)
773
774 class java_lang_Module {
775 private:
776 static int _loader_offset;
777 static int _name_offset;
778 static int _module_entry_offset;
779
780 static void compute_offsets();
781
782 public:
783 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
784
785 // Allocation
786 static Handle create(Handle loader, Handle module_name, TRAPS);
787
788 // Testers
789 static bool is_instance(oop obj);
790
791 // Accessors
792 static oop loader(oop module);
793 static void set_loader(oop module, oop value);
794
795 static oop name(oop module);
796 static void set_name(oop module, oop value);
797
798 static ModuleEntry* module_entry(oop module);
799 static void set_module_entry(oop module, ModuleEntry* module_entry);
800
801 friend class JavaClasses;
802 };
803
804 // Interface to jdk.internal.reflect.ConstantPool objects
805 class reflect_ConstantPool {
806 private:
807 // Note that to reduce dependencies on the JDK we compute these
808 // offsets at run-time.
809 static int _oop_offset;
810
811 static void compute_offsets();
812
813 public:
814 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
815
816 // Allocation
817 static Handle create(TRAPS);
818
819 // Accessors
820 static void set_cp(oop reflect, ConstantPool* value);
821 static int oop_offset() { CHECK_INIT(_oop_offset); }
822
823 static ConstantPool* get_cp(oop reflect);
824
825 // Debugging
826 friend class JavaClasses;
827 };
828
829 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
830 class reflect_UnsafeStaticFieldAccessorImpl {
831 private:
832 static int _base_offset;
833 static void compute_offsets();
834
835 public:
836 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
837
838 static int base_offset() { CHECK_INIT(_base_offset); }
839
840 // Debugging
841 friend class JavaClasses;
842 };
843
844 // Interface to java.lang primitive type boxing objects:
845 // - java.lang.Boolean
846 // - java.lang.Character
847 // - java.lang.Float
848 // - java.lang.Double
849 // - java.lang.Byte
850 // - java.lang.Short
851 // - java.lang.Integer
852 // - java.lang.Long
853
854 // This could be separated out into 8 individual classes.
855
856 class java_lang_boxing_object: AllStatic {
857 private:
858 static int _value_offset;
859 static int _long_value_offset;
860
861 static void compute_offsets();
862 static oop initialize_and_allocate(BasicType type, TRAPS);
863 public:
864 // Allocation. Returns a boxed value, or NULL for invalid type.
865 static oop create(BasicType type, jvalue* value, TRAPS);
866 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
867 static BasicType get_value(oop box, jvalue* value);
868 static BasicType set_value(oop box, jvalue* value);
869 static BasicType basic_type(oop box);
870 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
871 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
872 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
873 static void print(BasicType type, jvalue* value, outputStream* st);
874
875 static int value_offset(BasicType type) {
876 return is_double_word_type(type) ? _long_value_offset : _value_offset;
877 }
878
879 static void serialize_offsets(SerializeClosure* f);
880
881 // Debugging
882 friend class JavaClasses;
883 };
884
885
886
887 // Interface to java.lang.ref.Reference objects
888
889 class java_lang_ref_Reference: AllStatic {
890 static int _referent_offset;
891 static int _queue_offset;
892 static int _next_offset;
893 static int _discovered_offset;
894
895 static bool _offsets_initialized;
896
897 public:
898 // Accessors
899 static inline oop referent(oop ref);
900 static inline void set_referent(oop ref, oop value);
901 static inline void set_referent_raw(oop ref, oop value);
902 static inline HeapWord* referent_addr_raw(oop ref);
903 static inline oop next(oop ref);
904 static inline void set_next(oop ref, oop value);
905 static inline void set_next_raw(oop ref, oop value);
906 static inline HeapWord* next_addr_raw(oop ref);
907 static inline oop discovered(oop ref);
908 static inline void set_discovered(oop ref, oop value);
909 static inline void set_discovered_raw(oop ref, oop value);
910 static inline HeapWord* discovered_addr_raw(oop ref);
911 static inline oop queue(oop ref);
912 static inline void set_queue(oop ref, oop value);
913 static bool is_referent_field(oop obj, ptrdiff_t offset);
914 static inline bool is_final(oop ref);
915 static inline bool is_phantom(oop ref);
916
917 static int referent_offset() { CHECK_INIT(_referent_offset); }
918 static int queue_offset() { CHECK_INIT(_queue_offset); }
919 static int next_offset() { CHECK_INIT(_next_offset); }
920 static int discovered_offset() { CHECK_INIT(_discovered_offset); }
921
922 static void compute_offsets();
923 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
924 };
925
926
927 // Interface to java.lang.ref.SoftReference objects
928
929 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
930 static int _timestamp_offset;
931 static int _static_clock_offset;
932
933 public:
934 // Accessors
935 static jlong timestamp(oop ref);
936
937 // Accessors for statics
938 static jlong clock();
939 static void set_clock(jlong value);
940
941 static void compute_offsets();
942 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
943 };
944
945 // Interface to java.lang.invoke.MethodHandle objects
946
947 class MethodHandleEntry;
948
949 class java_lang_invoke_MethodHandle: AllStatic {
950 friend class JavaClasses;
951
952 private:
953 static int _type_offset; // the MethodType of this MH
954 static int _form_offset; // the LambdaForm of this MH
955
956 static void compute_offsets();
957
958 public:
959 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
960
961 // Accessors
962 static oop type(oop mh);
963 static void set_type(oop mh, oop mtype);
964
965 static oop form(oop mh);
966 static void set_form(oop mh, oop lform);
967
968 // Testers
969 static bool is_subclass(Klass* klass) {
970 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
971 }
972 static bool is_instance(oop obj);
973
974 // Accessors for code generation:
975 static int type_offset() { CHECK_INIT(_type_offset); }
976 static int form_offset() { CHECK_INIT(_form_offset); }
977 };
978
979 // Interface to java.lang.invoke.DirectMethodHandle objects
980
981 class java_lang_invoke_DirectMethodHandle: AllStatic {
982 friend class JavaClasses;
983
984 private:
985 static int _member_offset; // the MemberName of this DMH
986
987 static void compute_offsets();
988
989 public:
990 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
991
992 // Accessors
993 static oop member(oop mh);
994
995 // Testers
996 static bool is_subclass(Klass* klass) {
997 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
998 }
999 static bool is_instance(oop obj);
1000
1001 // Accessors for code generation:
1002 static int member_offset() { CHECK_INIT(_member_offset); }
1003 };
1004
1005 // Interface to java.lang.invoke.LambdaForm objects
1006 // (These are a private interface for managing adapter code generation.)
1007
1008 class java_lang_invoke_LambdaForm: AllStatic {
1009 friend class JavaClasses;
1010
1011 private:
1012 static int _vmentry_offset; // type is MemberName
1013
1014 static void compute_offsets();
1015
1016 public:
1017 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1018
1019 // Accessors
1020 static oop vmentry(oop lform);
1021 static void set_vmentry(oop lform, oop invoker);
1022
1023 // Testers
1024 static bool is_subclass(Klass* klass) {
1025 return SystemDictionary::LambdaForm_klass() != NULL &&
1026 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1027 }
1028 static bool is_instance(oop obj);
1029
1030 // Accessors for code generation:
1031 static int vmentry_offset() { CHECK_INIT(_vmentry_offset); }
1032 };
1033
1034
1035 // Interface to java.lang.invoke.MemberName objects
1036 // (These are a private interface for Java code to query the class hierarchy.)
1037
1038 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1039 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1040 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1041
1042 class java_lang_invoke_ResolvedMethodName : AllStatic {
1043 friend class JavaClasses;
1044
1045 static int _vmtarget_offset;
1046 static int _vmholder_offset;
1047
1048 static void compute_offsets();
1049 public:
1050 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1051
1052 static int vmtarget_offset() { CHECK_INIT(_vmtarget_offset); }
1053
1054 static Method* vmtarget(oop resolved_method);
1055 static void set_vmtarget(oop resolved_method, Method* method);
1056
1057 static void set_vmholder(oop resolved_method, oop holder);
1058
1059 // find or create resolved member name
1060 static oop find_resolved_method(const methodHandle& m, TRAPS);
1061
1062 static bool is_instance(oop resolved_method);
1063 };
1064
1065
1066 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1067 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1068
1069
1070 class java_lang_invoke_MemberName: AllStatic {
1071 friend class JavaClasses;
1072
1073 private:
1074 // From java.lang.invoke.MemberName:
1075 // private Class<?> clazz; // class in which the method is defined
1076 // private String name; // may be null if not yet materialized
1077 // private Object type; // may be null if not yet materialized
1078 // private int flags; // modifier bits; see reflect.Modifier
1079 // private ResolvedMethodName method; // holds VM-specific target value
1080 // private intptr_t vmindex; // member index within class or interface
1081 static int _clazz_offset;
1082 static int _name_offset;
1083 static int _type_offset;
1084 static int _flags_offset;
1085 static int _method_offset;
1086 static int _vmindex_offset;
1087
1088 static void compute_offsets();
1089
1090 public:
1091 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1092 // Accessors
1093 static oop clazz(oop mname);
1094 static void set_clazz(oop mname, oop clazz);
1095
1096 static oop type(oop mname);
1097 static void set_type(oop mname, oop type);
1098
1099 static oop name(oop mname);
1100 static void set_name(oop mname, oop name);
1101
1102 static int flags(oop mname);
1103 static void set_flags(oop mname, int flags);
1104
1105 // Link through ResolvedMethodName field to get Method*
1106 static Method* vmtarget(oop mname);
1107 static void set_method(oop mname, oop method);
1108
1109 static intptr_t vmindex(oop mname);
1110 static void set_vmindex(oop mname, intptr_t index);
1111
1112 // Testers
1113 static bool is_subclass(Klass* klass) {
1114 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1115 }
1116 static bool is_instance(oop obj);
1117
1118 static bool is_method(oop obj);
1119
1120 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1121 enum {
1122 MN_IS_METHOD = 0x00010000, // method (not constructor)
1123 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1124 MN_IS_FIELD = 0x00040000, // field
1125 MN_IS_TYPE = 0x00080000, // nested type
1126 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1127 MN_TRUSTED_FINAL = 0x00200000, // trusted final field
1128 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1129 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1130 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1131 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1132 MN_SEARCH_INTERFACES = 0x00200000, // walk implemented interfaces
1133 MN_NESTMATE_CLASS = 0x00000001,
1134 MN_HIDDEN_CLASS = 0x00000002,
1135 MN_STRONG_LOADER_LINK = 0x00000004,
1136 MN_ACCESS_VM_ANNOTATIONS = 0x00000008
1137 };
1138
1139 // Accessors for code generation:
1140 static int clazz_offset() { CHECK_INIT(_clazz_offset); }
1141 static int type_offset() { CHECK_INIT(_type_offset); }
1142 static int flags_offset() { CHECK_INIT(_flags_offset); }
1143 static int method_offset() { CHECK_INIT(_method_offset); }
1144 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1145 };
1146
1147
1148 // Interface to java.lang.invoke.MethodType objects
1149
1150 class java_lang_invoke_MethodType: AllStatic {
1151 friend class JavaClasses;
1152
1153 private:
1154 static int _rtype_offset;
1155 static int _ptypes_offset;
1156
1157 static void compute_offsets();
1158
1159 public:
1160 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1161 // Accessors
1162 static oop rtype(oop mt);
1163 static objArrayOop ptypes(oop mt);
1164
1165 static oop ptype(oop mt, int index);
1166 static int ptype_count(oop mt);
1167
1168 static int ptype_slot_count(oop mt); // extra counts for long/double
1169 static int rtype_slot_count(oop mt); // extra counts for long/double
1170
1171 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1172 static void print_signature(oop mt, outputStream* st);
1173
1174 static bool is_instance(oop obj);
1175
1176 static bool equals(oop mt1, oop mt2);
1177
1178 // Accessors for code generation:
1179 static int rtype_offset() { CHECK_INIT(_rtype_offset); }
1180 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); }
1181 };
1182
1183
1184 // Interface to java.lang.invoke.CallSite objects
1185
1186 class java_lang_invoke_CallSite: AllStatic {
1187 friend class JavaClasses;
1188
1189 private:
1190 static int _target_offset;
1191 static int _context_offset;
1192
1193 static void compute_offsets();
1194
1195 public:
1196 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1197 // Accessors
1198 static oop target( oop site);
1199 static void set_target( oop site, oop target);
1200 static void set_target_volatile( oop site, oop target);
1201
1202 static oop context_no_keepalive(oop site);
1203
1204 // Testers
1205 static bool is_subclass(Klass* klass) {
1206 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1207 }
1208 static bool is_instance(oop obj);
1209
1210 // Accessors for code generation:
1211 static int target_offset() { CHECK_INIT(_target_offset); }
1212 static int context_offset() { CHECK_INIT(_context_offset); }
1213 };
1214
1215 // Interface to java.lang.invoke.ConstantCallSite objects
1216
1217 class java_lang_invoke_ConstantCallSite: AllStatic {
1218 friend class JavaClasses;
1219
1220 private:
1221 static int _is_frozen_offset;
1222
1223 static void compute_offsets();
1224
1225 public:
1226 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1227 // Accessors
1228 static jboolean is_frozen(oop site);
1229
1230 // Testers
1231 static bool is_subclass(Klass* klass) {
1232 return klass->is_subclass_of(SystemDictionary::ConstantCallSite_klass());
1233 }
1234 static bool is_instance(oop obj);
1235 };
1236
1237 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1238
1239 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1240 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1241 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1242
1243 class DependencyContext;
1244
1245 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1246 friend class JavaClasses;
1247
1248 private:
1249 static int _vmdependencies_offset;
1250 static int _last_cleanup_offset;
1251
1252 static void compute_offsets();
1253
1254 public:
1255 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1256 // Accessors
1257 static DependencyContext vmdependencies(oop context);
1258
1259 // Testers
1260 static bool is_subclass(Klass* klass) {
1261 return klass->is_subclass_of(SystemDictionary::Context_klass());
1262 }
1263 static bool is_instance(oop obj);
1264 };
1265
1266 // Interface to java.security.AccessControlContext objects
1267
1268 class java_security_AccessControlContext: AllStatic {
1269 private:
1270 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1271 // so we compute the offsets at startup rather than hard-wiring them.
1272 static int _context_offset;
1273 static int _privilegedContext_offset;
1274 static int _isPrivileged_offset;
1275 static int _isAuthorized_offset;
1276
1277 static void compute_offsets();
1278 public:
1279 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1280 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1281
1282 // Debugging/initialization
1283 friend class JavaClasses;
1284 };
1285
1286
1287 // Interface to java.lang.ClassLoader objects
1288
1289 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1290 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1291
1292 class java_lang_ClassLoader : AllStatic {
1293 private:
1294 static int _loader_data_offset;
1295 static int _parent_offset;
1296 static int _parallelCapable_offset;
1297 static int _name_offset;
1298 static int _nameAndId_offset;
1299 static int _unnamedModule_offset;
1300
1301 static void compute_offsets();
1302
1303 public:
1304 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1305
1306 static ClassLoaderData* loader_data_acquire(oop loader);
1307 static ClassLoaderData* loader_data_raw(oop loader);
1308 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1309
1310 static oop parent(oop loader);
1311 static oop name(oop loader);
1312 static oop nameAndId(oop loader);
1313 static bool isAncestor(oop loader, oop cl);
1314
1315 // Support for parallelCapable field
1316 static bool parallelCapable(oop the_class_mirror);
1317
1318 static bool is_trusted_loader(oop loader);
1319
1320 // Return true if this is one of the class loaders associated with
1321 // the generated bytecodes for reflection.
1322 static bool is_reflection_class_loader(oop loader);
1323
1324 // Fix for 4474172
1325 static oop non_reflection_class_loader(oop loader);
1326
1327 // Testers
1328 static bool is_subclass(Klass* klass) {
1329 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1330 }
1331 static bool is_instance(oop obj);
1332
1333 static oop unnamedModule(oop loader);
1334
1335 // Debugging
1336 friend class JavaClasses;
1337 };
1338
1339
1340 // Interface to java.lang.System objects
1341
1342 class java_lang_System : AllStatic {
1343 private:
1344 static int _static_in_offset;
1345 static int _static_out_offset;
1346 static int _static_err_offset;
1347 static int _static_security_offset;
1348
1349 public:
1350 static int in_offset() { CHECK_INIT(_static_in_offset); }
1351 static int out_offset() { CHECK_INIT(_static_out_offset); }
1352 static int err_offset() { CHECK_INIT(_static_err_offset); }
1353
1354 static void compute_offsets();
1355 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1356
1357 // Debugging
1358 friend class JavaClasses;
1359 };
1360
1361
1362 // Interface to java.lang.StackTraceElement objects
1363
1364 class java_lang_StackTraceElement: AllStatic {
1365 private:
1366 static int _declaringClassObject_offset;
1367 static int _classLoaderName_offset;
1368 static int _moduleName_offset;
1369 static int _moduleVersion_offset;
1370 static int _declaringClass_offset;
1371 static int _methodName_offset;
1372 static int _fileName_offset;
1373 static int _lineNumber_offset;
1374
1375 // Setters
1376 static void set_classLoaderName(oop element, oop value);
1377 static void set_moduleName(oop element, oop value);
1378 static void set_moduleVersion(oop element, oop value);
1379 static void set_declaringClass(oop element, oop value);
1380 static void set_methodName(oop element, oop value);
1381 static void set_fileName(oop element, oop value);
1382 static void set_lineNumber(oop element, int value);
1383 static void set_declaringClassObject(oop element, oop value);
1384
1385 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1386 const methodHandle& method, int bci,
1387 Symbol*& source, oop& source_file, int& line_number, TRAPS);
1388
1389 public:
1390 // Create an instance of StackTraceElement
1391 static oop create(const methodHandle& method, int bci, TRAPS);
1392
1393 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1394 int version, int bci, Symbol* name, TRAPS);
1395
1396 static void compute_offsets();
1397 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1398
1399 #if INCLUDE_JVMCI
1400 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1401 #endif
1402
1403 // Debugging
1404 friend class JavaClasses;
1405 };
1406
1407
1408 class Backtrace: AllStatic {
1409 public:
1410 // Helper backtrace functions to store bci|version together.
1411 static int merge_bci_and_version(int bci, int version);
1412 static int merge_mid_and_cpref(int mid, int cpref);
1413 static int bci_at(unsigned int merged);
1414 static int version_at(unsigned int merged);
1415 static int mid_at(unsigned int merged);
1416 static int cpref_at(unsigned int merged);
1417 static int get_line_number(Method* method, int bci);
1418 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1419
1420 // Debugging
1421 friend class JavaClasses;
1422 };
1423
1424 // Interface to java.lang.StackFrameInfo objects
1425
1426 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1427 macro(java_lang_StackFrameInfo, version, short_signature, false)
1428
1429 class java_lang_StackFrameInfo: AllStatic {
1430 private:
1431 static int _memberName_offset;
1432 static int _bci_offset;
1433 static int _version_offset;
1434
1435 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1436
1437 public:
1438 // Setters
1439 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1440 static void set_bci(oop info, int value);
1441
1442 static void set_version(oop info, short value);
1443
1444 static void compute_offsets();
1445 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1446
1447 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1448
1449 // Debugging
1450 friend class JavaClasses;
1451 };
1452
1453 class java_lang_LiveStackFrameInfo: AllStatic {
1454 private:
1455 static int _monitors_offset;
1456 static int _locals_offset;
1457 static int _operands_offset;
1458 static int _mode_offset;
1459
1460 public:
1461 static void set_monitors(oop info, oop value);
1462 static void set_locals(oop info, oop value);
1463 static void set_operands(oop info, oop value);
1464 static void set_mode(oop info, int value);
1465
1466 static void compute_offsets();
1467 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1468
1469 // Debugging
1470 friend class JavaClasses;
1471 };
1472
1473 // Interface to java.lang.reflect.RecordComponent objects
1474
1475 class java_lang_reflect_RecordComponent: AllStatic {
1476 private:
1477 static int _clazz_offset;
1478 static int _name_offset;
1479 static int _type_offset;
1480 static int _accessor_offset;
1481 static int _signature_offset;
1482 static int _annotations_offset;
1483 static int _typeAnnotations_offset;
1484
1485 // Setters
1486 static void set_clazz(oop element, oop value);
1487 static void set_name(oop element, oop value);
1488 static void set_type(oop element, oop value);
1489 static void set_accessor(oop element, oop value);
1490 static void set_signature(oop element, oop value);
1491 static void set_annotations(oop element, oop value);
1492 static void set_typeAnnotations(oop element, oop value);
1493
1494 public:
1495 // Create an instance of RecordComponent
1496 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1497
1498 static void compute_offsets();
1499 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1500
1501 // Debugging
1502 friend class JavaClasses;
1503 };
1504
1505
1506 // Interface to java.lang.AssertionStatusDirectives objects
1507
1508 class java_lang_AssertionStatusDirectives: AllStatic {
1509 private:
1510 static int _classes_offset;
1511 static int _classEnabled_offset;
1512 static int _packages_offset;
1513 static int _packageEnabled_offset;
1514 static int _deflt_offset;
1515
1516 public:
1517 // Setters
1518 static void set_classes(oop obj, oop val);
1519 static void set_classEnabled(oop obj, oop val);
1520 static void set_packages(oop obj, oop val);
1521 static void set_packageEnabled(oop obj, oop val);
1522 static void set_deflt(oop obj, bool val);
1523
1524 static void compute_offsets();
1525 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1526
1527 // Debugging
1528 friend class JavaClasses;
1529 };
1530
1531
1532 class java_nio_Buffer: AllStatic {
1533 private:
1534 static int _limit_offset;
1535
1536 public:
1537 static int limit_offset() { CHECK_INIT(_limit_offset); }
1538 static void compute_offsets();
1539 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1540 };
1541
1542 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1543 private:
1544 static int _owner_offset;
1545 public:
1546 static void compute_offsets();
1547 static oop get_owner_threadObj(oop obj);
1548 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1549 };
1550
1551 // Interface to jdk.internal.misc.UnsafeConsants
1552
1553 class jdk_internal_misc_UnsafeConstants : AllStatic {
1554 public:
1555 static void set_unsafe_constants();
1556 static void compute_offsets() { }
1557 static void serialize_offsets(SerializeClosure* f) { }
1558 };
1559
1560 class java_lang_Integer : AllStatic {
1561 public:
1562 static jint value(oop obj);
1563 };
1564
1565 class java_lang_Long : AllStatic {
1566 public:
1567 static jlong value(oop obj);
1568 };
1569
1570 class java_lang_Character : AllStatic {
1571 public:
1572 static jchar value(oop obj);
1573 };
1574
1575 class java_lang_Short : AllStatic {
1576 public:
1577 static jshort value(oop obj);
1578 };
1579
1580 class java_lang_Byte : AllStatic {
1581 public:
1582 static jbyte value(oop obj);
1583 };
1584
1585 class java_lang_Boolean : AllStatic {
1586 private:
1587 static int _static_TRUE_offset;
1588 static int _static_FALSE_offset;
1589 public:
1590 static Symbol* symbol();
1591 static void compute_offsets(InstanceKlass* k);
1592 static oop get_TRUE(InstanceKlass *k);
1593 static oop get_FALSE(InstanceKlass *k);
1594 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1595 static jboolean value(oop obj);
1596 };
1597
1598 class java_lang_Integer_IntegerCache : AllStatic {
1599 private:
1600 static int _static_cache_offset;
1601 public:
1602 static Symbol* symbol();
1603 static void compute_offsets(InstanceKlass* k);
1604 static objArrayOop cache(InstanceKlass *k);
1605 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1606 };
1607
1608 class java_lang_Long_LongCache : AllStatic {
1609 private:
1610 static int _static_cache_offset;
1611 public:
1612 static Symbol* symbol();
1613 static void compute_offsets(InstanceKlass* k);
1614 static objArrayOop cache(InstanceKlass *k);
1615 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1616 };
1617
1618 class java_lang_Character_CharacterCache : AllStatic {
1619 private:
1620 static int _static_cache_offset;
1621 public:
1622 static Symbol* symbol();
1623 static void compute_offsets(InstanceKlass* k);
1624 static objArrayOop cache(InstanceKlass *k);
1625 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1626 };
1627
1628 class java_lang_Short_ShortCache : AllStatic {
1629 private:
1630 static int _static_cache_offset;
1631 public:
1632 static Symbol* symbol();
1633 static void compute_offsets(InstanceKlass* k);
1634 static objArrayOop cache(InstanceKlass *k);
1635 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1636 };
1637
1638 class java_lang_Byte_ByteCache : AllStatic {
1639 private:
1640 static int _static_cache_offset;
1641 public:
1642 static Symbol* symbol();
1643 static void compute_offsets(InstanceKlass* k);
1644 static objArrayOop cache(InstanceKlass *k);
1645 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1646 };
1647
1648 // Use to declare fields that need to be injected into Java classes
1649 // for the JVM to use. The name_index and signature_index are
1650 // declared in vmSymbols. The may_be_java flag is used to declare
1651 // fields that might already exist in Java but should be injected if
1652 // they don't. Otherwise the field is unconditionally injected and
1653 // the JVM uses the injected one. This is to ensure that name
1654 // collisions don't occur. In general may_be_java should be false
1655 // unless there's a good reason.
1656
1657 class InjectedField {
1658 public:
1659 const SystemDictionary::WKID klass_id;
1660 const vmSymbols::SID name_index;
1661 const vmSymbols::SID signature_index;
1662 const bool may_be_java;
1663
1664
1665 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1666 Symbol* name() const { return lookup_symbol(name_index); }
1667 Symbol* signature() const { return lookup_symbol(signature_index); }
1668
1669 int compute_offset();
1670
1671 // Find the Symbol for this index
1672 static Symbol* lookup_symbol(int symbol_index) {
1673 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1674 }
1675 };
1676
1677 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1678 klass##_##name##_enum,
1679
1680 #define ALL_INJECTED_FIELDS(macro) \
1681 CLASS_INJECTED_FIELDS(macro) \
1682 CLASSLOADER_INJECTED_FIELDS(macro) \
1683 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1684 MEMBERNAME_INJECTED_FIELDS(macro) \
1685 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1686 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1687 MODULE_INJECTED_FIELDS(macro)
1688
1689 // Interface to hard-coded offset checking
1690
1691 class JavaClasses : AllStatic {
1692 private:
1693
1694 static InjectedField _injected_fields[];
1695
1696 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1697 public:
1698 enum InjectedFieldID {
1699 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1700 MAX_enum
1701 };
1702
1703 static int compute_injected_offset(InjectedFieldID id);
1704
1705 static void compute_offsets();
1706 static void check_offsets() PRODUCT_RETURN;
1707 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1708 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1709 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1710 };
1711
1712 #undef DECLARE_INJECTED_FIELD_ENUM
1713
1714 #undef CHECK_INIT
1715 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP