1 /*
2 * Copyright (c) 1997, 2018, 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_VM_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_VM_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 #include "utilities/utf8.hpp"
33
34 // Interface for manipulating the basic Java classes.
35 //
36 // All dependencies on layout of actual Java classes should be kept here.
37 // If the layout of any of the classes above changes the offsets must be adjusted.
38 //
39 // For most classes we hardwire the offsets for performance reasons. In certain
40 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
41 // startup since the layout here differs between JDK1.2 and JDK1.3.
42 //
43 // Note that fields (static and non-static) are arranged with oops before non-oops
44 // on a per class basis. The offsets below have to reflect this ordering.
45 //
46 // When editing the layouts please update the check_offset verification code
47 // correspondingly. The names in the enums must be identical to the actual field
48 // names in order for the verification code to work.
49
50
51 // Interface to java.lang.String objects
52
53 class java_lang_String : AllStatic {
54 private:
55 static int value_offset;
56 static int hash_offset;
57 static int coder_offset;
58
59 static bool initialized;
60
61 static Handle basic_create(int length, bool byte_arr, TRAPS);
62
63 static inline void set_coder(oop string, jbyte coder);
64
65 public:
66
67 // Coders
68 enum Coder {
69 CODER_LATIN1 = 0,
70 CODER_UTF16 = 1
71 };
72
73 static void compute_offsets();
74 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
75
76 // Instance creation
77 static Handle create_from_unicode(jchar* unicode, int len, TRAPS);
78 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS);
79 static Handle create_from_str(const char* utf8_str, TRAPS);
80 static oop create_oop_from_str(const char* utf8_str, TRAPS);
81 static Handle create_from_symbol(Symbol* symbol, TRAPS);
82 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
83 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
84
85 static void set_compact_strings(bool value);
86
87 static int value_offset_in_bytes() {
88 assert(initialized && (value_offset > 0), "Must be initialized");
89 return value_offset;
90 }
91 static int hash_offset_in_bytes() {
92 assert(initialized && (hash_offset > 0), "Must be initialized");
93 return hash_offset;
94 }
95 static int coder_offset_in_bytes() {
96 assert(initialized && (coder_offset > 0), "Must be initialized");
97 return coder_offset;
98 }
99
100 static inline void set_value_raw(oop string, typeArrayOop buffer);
101 static inline void set_value(oop string, typeArrayOop buffer);
102 static inline void set_hash(oop string, unsigned int hash);
103
104 // Accessors
105 static inline typeArrayOop value(oop java_string);
106 static inline typeArrayOop value_no_keepalive(oop java_string);
107 static inline unsigned int hash(oop java_string);
108 static inline bool is_latin1(oop java_string);
109 static inline int length(oop java_string);
110 static int utf8_length(oop java_string);
111
112 // String converters
113 static char* as_utf8_string(oop java_string);
114 static char* as_utf8_string(oop java_string, char* buf, int buflen);
115 static char* as_utf8_string(oop java_string, int start, int len);
116 static char* as_utf8_string(oop java_string, int start, int len, char* buf, int buflen);
117 static char* as_platform_dependent_str(Handle java_string, TRAPS);
118 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
119 // produce an ascii string with all other values quoted using \u####
120 static char* as_quoted_ascii(oop java_string);
121
122 // Compute the hash value for a java.lang.String object which would
123 // contain the characters passed in.
124 //
125 // As the hash value used by the String object itself, in
126 // String.hashCode(). This value is normally calculated in Java code
127 // in the String.hashCode method(), but is precomputed for String
128 // objects in the shared archive file.
129 // hash P(31) from Kernighan & Ritchie
130 //
131 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
132 static unsigned int hash_code(const jchar* s, int len) {
133 unsigned int h = 0;
134 while (len-- > 0) {
135 h = 31*h + (unsigned int) *s;
136 s++;
137 }
138 return h;
139 }
140
141 static unsigned int hash_code(const jbyte* s, int len) {
142 unsigned int h = 0;
143 while (len-- > 0) {
144 h = 31*h + (((unsigned int) *s) & 0xFF);
145 s++;
146 }
147 return h;
148 }
149
150 static unsigned int hash_code(oop java_string);
151
152 static bool equals(oop java_string, jchar* chars, int len);
153 static bool equals(oop str1, oop str2);
154
155 // Conversion between '.' and '/' formats
156 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
157 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
158
159 // Conversion
160 static Symbol* as_symbol(oop java_string, TRAPS);
161 static Symbol* as_symbol_or_null(oop java_string);
162
163 // Testers
164 static bool is_instance(oop obj);
165 static inline bool is_instance_inlined(oop obj);
166
167 // Debugging
168 static void print(oop java_string, outputStream* st);
169 friend class JavaClasses;
170 friend class StringTable;
171 };
172
173
174 // Interface to java.lang.Class objects
175
176 #define CLASS_INJECTED_FIELDS(macro) \
177 macro(java_lang_Class, klass, intptr_signature, false) \
178 macro(java_lang_Class, array_klass, intptr_signature, false) \
179 macro(java_lang_Class, oop_size, int_signature, false) \
180 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
181 macro(java_lang_Class, protection_domain, object_signature, false) \
182 macro(java_lang_Class, signers, object_signature, false)
183
184 class java_lang_Class : AllStatic {
185 friend class VMStructs;
186 friend class JVMCIVMStructs;
187
188 private:
189 // The fake offsets are added by the class loader when java.lang.Class is loaded
190
191 static int _klass_offset;
192 static int _array_klass_offset;
193
194 static int _oop_size_offset;
195 static int _static_oop_field_count_offset;
196
197 static int _protection_domain_offset;
198 static int _init_lock_offset;
199 static int _signers_offset;
200 static int _class_loader_offset;
201 static int _module_offset;
202 static int _component_mirror_offset;
203
204 static bool offsets_computed;
205 static int classRedefinedCount_offset;
206
207 static GrowableArray<Klass*>* _fixup_mirror_list;
208 static GrowableArray<Klass*>* _fixup_module_field_list;
209
210 static void set_init_lock(oop java_class, oop init_lock);
211 static void set_protection_domain(oop java_class, oop protection_domain);
212 static void set_class_loader(oop java_class, oop class_loader);
213 static void set_component_mirror(oop java_class, oop comp_mirror);
214 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
215 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
216 public:
217 static void allocate_fixup_lists();
218 static void compute_offsets();
219
220 // Instance creation
221 static void create_mirror(Klass* k, Handle class_loader, Handle module,
222 Handle protection_domain, TRAPS);
223 static void fixup_mirror(Klass* k, TRAPS);
224 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
225
226 // Archiving
227 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
228 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
229 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
230 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
231 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
232 static void restore_archived_mirror(Klass *k, Handle mirror, Handle class_loader, Handle module,
233 Handle protection_domain, TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
234
235 static void fixup_module_field(Klass* k, Handle module);
236
237 // Conversion
238 static Klass* as_Klass(oop java_class);
239 static void set_klass(oop java_class, Klass* klass);
240 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
241 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
242 static void print_signature(oop java_class, outputStream *st);
243 static const char* as_external_name(oop java_class);
244 // Testing
245 static bool is_instance(oop obj);
246
247 static bool is_primitive(oop java_class);
248 static BasicType primitive_type(oop java_class);
249 static oop primitive_mirror(BasicType t);
250 // JVM_NewArray support
251 static Klass* array_klass_acquire(oop java_class);
252 static void release_set_array_klass(oop java_class, Klass* klass);
253 // compiler support for class operations
254 static int klass_offset_in_bytes() { return _klass_offset; }
255 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
256 // Support for classRedefinedCount field
257 static int classRedefinedCount(oop the_class_mirror);
258 static void set_classRedefinedCount(oop the_class_mirror, int value);
259
260 // Support for embedded per-class oops
261 static oop protection_domain(oop java_class);
262 static oop init_lock(oop java_class);
263 static oop component_mirror(oop java_class);
264 static objArrayOop signers(oop java_class);
265 static void set_signers(oop java_class, objArrayOop signers);
266
267 static oop class_loader(oop java_class);
268 static void set_module(oop java_class, oop module);
269 static oop module(oop java_class);
270
271 static int oop_size(oop java_class);
272 static void set_oop_size(oop java_class, int size);
273 static int static_oop_field_count(oop java_class);
274 static void set_static_oop_field_count(oop java_class, int size);
275
276 static GrowableArray<Klass*>* fixup_mirror_list() {
277 return _fixup_mirror_list;
278 }
279 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
280 _fixup_mirror_list = v;
281 }
282
283 static GrowableArray<Klass*>* fixup_module_field_list() {
284 return _fixup_module_field_list;
285 }
286 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
287 _fixup_module_field_list = v;
288 }
289
290 // Debugging
291 friend class JavaClasses;
292 friend class InstanceKlass; // verification code accesses offsets
293 friend class ClassFileParser; // access to number_of_fake_fields
294 };
295
296 // Interface to java.lang.Thread objects
297
298 class java_lang_Thread : AllStatic {
299 private:
300 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
301 // so we compute the offsets at startup rather than hard-wiring them.
302 static int _name_offset;
303 static int _group_offset;
304 static int _contextClassLoader_offset;
305 static int _inheritedAccessControlContext_offset;
306 static int _priority_offset;
307 static int _eetop_offset;
308 static int _daemon_offset;
309 static int _stillborn_offset;
310 static int _stackSize_offset;
311 static int _tid_offset;
312 static int _thread_status_offset;
313 static int _park_blocker_offset;
314 static int _park_event_offset ;
315
316 static void compute_offsets();
317
318 public:
319 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
320
321 // Instance creation
322 static oop create();
323 // Returns the JavaThread associated with the thread obj
324 static JavaThread* thread(oop java_thread);
325 // Set JavaThread for instance
326 static void set_thread(oop java_thread, JavaThread* thread);
327 // Name
328 static oop name(oop java_thread);
329 static void set_name(oop java_thread, oop name);
330 // Priority
331 static ThreadPriority priority(oop java_thread);
332 static void set_priority(oop java_thread, ThreadPriority priority);
333 // Thread group
334 static oop threadGroup(oop java_thread);
335 // Stillborn
336 static bool is_stillborn(oop java_thread);
337 static void set_stillborn(oop java_thread);
338 // Alive (NOTE: this is not really a field, but provides the correct
339 // definition without doing a Java call)
340 static bool is_alive(oop java_thread);
341 // Daemon
342 static bool is_daemon(oop java_thread);
343 static void set_daemon(oop java_thread);
344 // Context ClassLoader
345 static oop context_class_loader(oop java_thread);
346 // Control context
347 static oop inherited_access_control_context(oop java_thread);
348 // Stack size hint
349 static jlong stackSize(oop java_thread);
350 // Thread ID
351 static jlong thread_id(oop java_thread);
352
353 // Blocker object responsible for thread parking
354 static oop park_blocker(oop java_thread);
355
356 // Pointer to type-stable park handler, encoded as jlong.
357 // Should be set when apparently null
358 // For details, see unsafe.cpp Unsafe_Unpark
359 static jlong park_event(oop java_thread);
360 static bool set_park_event(oop java_thread, jlong ptr);
361
362 // Java Thread Status for JVMTI and M&M use.
363 // This thread status info is saved in threadStatus field of
364 // java.lang.Thread java class.
365 enum ThreadStatus {
366 NEW = 0,
367 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
368 JVMTI_THREAD_STATE_RUNNABLE,
369 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
370 JVMTI_THREAD_STATE_WAITING +
371 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
372 JVMTI_THREAD_STATE_SLEEPING,
373 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
374 JVMTI_THREAD_STATE_WAITING +
375 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
376 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
377 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
378 JVMTI_THREAD_STATE_WAITING +
379 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
380 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
381 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
382 JVMTI_THREAD_STATE_WAITING +
383 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
384 JVMTI_THREAD_STATE_PARKED,
385 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
386 JVMTI_THREAD_STATE_WAITING +
387 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
388 JVMTI_THREAD_STATE_PARKED,
389 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
390 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
391 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
392 };
393 // Write thread status info to threadStatus field of java.lang.Thread.
394 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
395 // Read thread status info from threadStatus field of java.lang.Thread.
396 static ThreadStatus get_thread_status(oop java_thread_oop);
397
398 static const char* thread_status_name(oop java_thread_oop);
399
400 // Debugging
401 friend class JavaClasses;
402 };
403
404 // Interface to java.lang.ThreadGroup objects
405
406 class java_lang_ThreadGroup : AllStatic {
407 private:
408 static int _parent_offset;
409 static int _name_offset;
410 static int _threads_offset;
411 static int _groups_offset;
412 static int _maxPriority_offset;
413 static int _destroyed_offset;
414 static int _daemon_offset;
415 static int _nthreads_offset;
416 static int _ngroups_offset;
417
418 static void compute_offsets();
419
420 public:
421 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
422
423 // parent ThreadGroup
424 static oop parent(oop java_thread_group);
425 // name
426 static const char* name(oop java_thread_group);
427 // ("name as oop" accessor is not necessary)
428 // Number of threads in group
429 static int nthreads(oop java_thread_group);
430 // threads
431 static objArrayOop threads(oop java_thread_group);
432 // Number of threads in group
433 static int ngroups(oop java_thread_group);
434 // groups
435 static objArrayOop groups(oop java_thread_group);
436 // maxPriority in group
437 static ThreadPriority maxPriority(oop java_thread_group);
438 // Destroyed
439 static bool is_destroyed(oop java_thread_group);
440 // Daemon
441 static bool is_daemon(oop java_thread_group);
442 // Debugging
443 friend class JavaClasses;
444 };
445
446
447
448 // Interface to java.lang.Throwable objects
449
450 class java_lang_Throwable: AllStatic {
451 friend class BacktraceBuilder;
452 friend class BacktraceIterator;
453
454 private:
455 // Offsets
456 enum {
457 hc_backtrace_offset = 0,
458 hc_detailMessage_offset = 1,
459 hc_cause_offset = 2, // New since 1.4
460 hc_stackTrace_offset = 3 // New since 1.4
461 };
462 // Trace constants
463 enum {
464 trace_methods_offset = 0,
465 trace_bcis_offset = 1,
466 trace_mirrors_offset = 2,
467 trace_names_offset = 3,
468 trace_next_offset = 4,
469 trace_size = 5,
470 trace_chunk_size = 32
471 };
472
473 static int backtrace_offset;
474 static int detailMessage_offset;
475 static int stackTrace_offset;
476 static int depth_offset;
477 static int static_unassigned_stacktrace_offset;
478
479 // StackTrace (programmatic access, new since 1.4)
480 static void clear_stacktrace(oop throwable);
481 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
482 static void set_stacktrace(oop throwable, oop st_element_array);
483 static oop unassigned_stacktrace();
484
485 public:
486 // Backtrace
487 static oop backtrace(oop throwable);
488 static void set_backtrace(oop throwable, oop value);
489 static int depth(oop throwable);
490 static void set_depth(oop throwable, int value);
491 // Needed by JVMTI to filter out this internal field.
492 static int get_backtrace_offset() { return backtrace_offset;}
493 static int get_detailMessage_offset() { return detailMessage_offset;}
494 // Message
495 static oop message(oop throwable);
496 static void set_message(oop throwable, oop value);
497 static Symbol* detail_message(oop throwable);
498 static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
499 static void print_stack_usage(Handle stream);
500
501 static void compute_offsets();
502 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
503
504 // Allocate space for backtrace (created but stack trace not filled in)
505 static void allocate_backtrace(Handle throwable, TRAPS);
506 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
507 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
508 // Fill in current stack trace, can cause GC
509 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
510 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
511 // Programmatic access to stack trace
512 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
513 // Printing
514 static void print(oop throwable, outputStream* st);
515 static void print_stack_trace(Handle throwable, outputStream* st);
516 static void java_printStackTrace(Handle throwable, TRAPS);
517 // Debugging
518 friend class JavaClasses;
519 };
520
521
522 // Interface to java.lang.reflect.AccessibleObject objects
523
524 class java_lang_reflect_AccessibleObject: AllStatic {
525 private:
526 // Note that to reduce dependencies on the JDK we compute these
527 // offsets at run-time.
528 static int override_offset;
529
530 static void compute_offsets();
531
532 public:
533 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
534
535 // Accessors
536 static jboolean override(oop reflect);
537 static void set_override(oop reflect, jboolean value);
538
539 // Debugging
540 friend class JavaClasses;
541 };
542
543
544 // Interface to java.lang.reflect.Method objects
545
546 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
547 private:
548 // Note that to reduce dependencies on the JDK we compute these
549 // offsets at run-time.
550 static int clazz_offset;
551 static int name_offset;
552 static int returnType_offset;
553 static int parameterTypes_offset;
554 static int exceptionTypes_offset;
555 static int slot_offset;
556 static int modifiers_offset;
557 static int signature_offset;
558 static int annotations_offset;
559 static int parameter_annotations_offset;
560 static int annotation_default_offset;
561 static int type_annotations_offset;
562
563 static void compute_offsets();
564
565 public:
566 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
567
568 // Allocation
569 static Handle create(TRAPS);
570
571 // Accessors
572 static oop clazz(oop reflect);
573 static void set_clazz(oop reflect, oop value);
574
575 static oop name(oop method);
576 static void set_name(oop method, oop value);
577
578 static oop return_type(oop method);
579 static void set_return_type(oop method, oop value);
580
581 static oop parameter_types(oop method);
582 static void set_parameter_types(oop method, oop value);
583
584 static oop exception_types(oop method);
585 static void set_exception_types(oop method, oop value);
586
587 static int slot(oop reflect);
588 static void set_slot(oop reflect, int value);
589
590 static int modifiers(oop method);
591 static void set_modifiers(oop method, int value);
592
593 static bool has_signature_field();
594 static oop signature(oop method);
595 static void set_signature(oop method, oop value);
596
597 static bool has_annotations_field();
598 static oop annotations(oop method);
599 static void set_annotations(oop method, oop value);
600
601 static bool has_parameter_annotations_field();
602 static oop parameter_annotations(oop method);
603 static void set_parameter_annotations(oop method, oop value);
604
605 static bool has_annotation_default_field();
606 static oop annotation_default(oop method);
607 static void set_annotation_default(oop method, oop value);
608
609 static bool has_type_annotations_field();
610 static oop type_annotations(oop method);
611 static void set_type_annotations(oop method, oop value);
612
613 // Debugging
614 friend class JavaClasses;
615 };
616
617
618 // Interface to java.lang.reflect.Constructor objects
619
620 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
621 private:
622 // Note that to reduce dependencies on the JDK we compute these
623 // offsets at run-time.
624 static int clazz_offset;
625 static int parameterTypes_offset;
626 static int exceptionTypes_offset;
627 static int slot_offset;
628 static int modifiers_offset;
629 static int signature_offset;
630 static int annotations_offset;
631 static int parameter_annotations_offset;
632 static int type_annotations_offset;
633
634 static void compute_offsets();
635
636 public:
637 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
638
639 // Allocation
640 static Handle create(TRAPS);
641
642 // Accessors
643 static oop clazz(oop reflect);
644 static void set_clazz(oop reflect, oop value);
645
646 static oop parameter_types(oop constructor);
647 static void set_parameter_types(oop constructor, oop value);
648
649 static oop exception_types(oop constructor);
650 static void set_exception_types(oop constructor, oop value);
651
652 static int slot(oop reflect);
653 static void set_slot(oop reflect, int value);
654
655 static int modifiers(oop constructor);
656 static void set_modifiers(oop constructor, int value);
657
658 static bool has_signature_field();
659 static oop signature(oop constructor);
660 static void set_signature(oop constructor, oop value);
661
662 static bool has_annotations_field();
663 static oop annotations(oop constructor);
664 static void set_annotations(oop constructor, oop value);
665
666 static bool has_parameter_annotations_field();
667 static oop parameter_annotations(oop method);
668 static void set_parameter_annotations(oop method, oop value);
669
670 static bool has_type_annotations_field();
671 static oop type_annotations(oop constructor);
672 static void set_type_annotations(oop constructor, oop value);
673
674 // Debugging
675 friend class JavaClasses;
676 };
677
678
679 // Interface to java.lang.reflect.Field objects
680
681 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
682 private:
683 // Note that to reduce dependencies on the JDK we compute these
684 // offsets at run-time.
685 static int clazz_offset;
686 static int name_offset;
687 static int type_offset;
688 static int slot_offset;
689 static int modifiers_offset;
690 static int signature_offset;
691 static int annotations_offset;
692 static int type_annotations_offset;
693
694 static void compute_offsets();
695
696 public:
697 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
698
699 // Allocation
700 static Handle create(TRAPS);
701
702 // Accessors
703 static oop clazz(oop reflect);
704 static void set_clazz(oop reflect, oop value);
705
706 static oop name(oop field);
707 static void set_name(oop field, oop value);
708
709 static oop type(oop field);
710 static void set_type(oop field, oop value);
711
712 static int slot(oop reflect);
713 static void set_slot(oop reflect, int value);
714
715 static int modifiers(oop field);
716 static void set_modifiers(oop field, int value);
717
718 static bool has_signature_field();
719 static oop signature(oop constructor);
720 static void set_signature(oop constructor, oop value);
721
722 static bool has_annotations_field();
723 static oop annotations(oop constructor);
724 static void set_annotations(oop constructor, oop value);
725
726 static bool has_parameter_annotations_field();
727 static oop parameter_annotations(oop method);
728 static void set_parameter_annotations(oop method, oop value);
729
730 static bool has_annotation_default_field();
731 static oop annotation_default(oop method);
732 static void set_annotation_default(oop method, oop value);
733
734 static bool has_type_annotations_field();
735 static oop type_annotations(oop field);
736 static void set_type_annotations(oop field, oop value);
737
738 // Debugging
739 friend class JavaClasses;
740 };
741
742 class java_lang_reflect_Parameter {
743 private:
744 // Note that to reduce dependencies on the JDK we compute these
745 // offsets at run-time.
746 static int name_offset;
747 static int modifiers_offset;
748 static int index_offset;
749 static int executable_offset;
750
751 static void compute_offsets();
752
753 public:
754 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
755
756 // Allocation
757 static Handle create(TRAPS);
758
759 // Accessors
760 static oop name(oop field);
761 static void set_name(oop field, oop value);
762
763 static int index(oop reflect);
764 static void set_index(oop reflect, int value);
765
766 static int modifiers(oop reflect);
767 static void set_modifiers(oop reflect, int value);
768
769 static oop executable(oop constructor);
770 static void set_executable(oop constructor, oop value);
771
772 friend class JavaClasses;
773 };
774
775 #define MODULE_INJECTED_FIELDS(macro) \
776 macro(java_lang_Module, module_entry, intptr_signature, false)
777
778 class java_lang_Module {
779 private:
780 static int loader_offset;
781 static int name_offset;
782 static int _module_entry_offset;
783 static void compute_offsets();
784
785 public:
786 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
787
788 // Allocation
789 static Handle create(Handle loader, Handle module_name, TRAPS);
790
791 // Testers
792 static bool is_instance(oop obj);
793
794 // Accessors
795 static oop loader(oop module);
796 static void set_loader(oop module, oop value);
797
798 static oop name(oop module);
799 static void set_name(oop module, oop value);
800
801 static ModuleEntry* module_entry(oop module);
802 static void set_module_entry(oop module, ModuleEntry* module_entry);
803
804 friend class JavaClasses;
805 };
806
807 // Interface to jdk.internal.reflect.ConstantPool objects
808 class reflect_ConstantPool {
809 private:
810 // Note that to reduce dependencies on the JDK we compute these
811 // offsets at run-time.
812 static int _oop_offset;
813
814 static void compute_offsets();
815
816 public:
817 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
818
819 // Allocation
820 static Handle create(TRAPS);
821
822 // Accessors
823 static void set_cp(oop reflect, ConstantPool* value);
824 static int oop_offset() {
825 return _oop_offset;
826 }
827
828 static ConstantPool* get_cp(oop reflect);
829
830 // Debugging
831 friend class JavaClasses;
832 };
833
834 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
835 class reflect_UnsafeStaticFieldAccessorImpl {
836 private:
837 static int _base_offset;
838 static void compute_offsets();
839
840 public:
841 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
842
843 static int base_offset() {
844 return _base_offset;
845 }
846
847 // Debugging
848 friend class JavaClasses;
849 };
850
851 // Interface to java.lang primitive type boxing objects:
852 // - java.lang.Boolean
853 // - java.lang.Character
854 // - java.lang.Float
855 // - java.lang.Double
856 // - java.lang.Byte
857 // - java.lang.Short
858 // - java.lang.Integer
859 // - java.lang.Long
860
861 // This could be separated out into 8 individual classes.
862
863 class java_lang_boxing_object: AllStatic {
864 private:
865 enum {
866 hc_value_offset = 0
867 };
868 static int value_offset;
869 static int long_value_offset;
870
871 static oop initialize_and_allocate(BasicType type, TRAPS);
872 public:
873 // Allocation. Returns a boxed value, or NULL for invalid type.
874 static oop create(BasicType type, jvalue* value, TRAPS);
875 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
876 static BasicType get_value(oop box, jvalue* value);
877 static BasicType set_value(oop box, jvalue* value);
878 static BasicType basic_type(oop box);
879 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
880 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
881 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
882 static void print(BasicType type, jvalue* value, outputStream* st);
883
884 static int value_offset_in_bytes(BasicType type) {
885 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
886 value_offset;
887 }
888
889 // Debugging
890 friend class JavaClasses;
891 };
892
893
894
895 // Interface to java.lang.ref.Reference objects
896
897 class java_lang_ref_Reference: AllStatic {
898 public:
899 enum {
900 hc_referent_offset = 0,
901 hc_queue_offset = 1,
902 hc_next_offset = 2,
903 hc_discovered_offset = 3 // Is not last, see SoftRefs.
904 };
905
906 static int referent_offset;
907 static int queue_offset;
908 static int next_offset;
909 static int discovered_offset;
910
911 // Accessors
912 static inline oop referent(oop ref);
913 static inline void set_referent(oop ref, oop value);
914 static inline void set_referent_raw(oop ref, oop value);
915 static inline HeapWord* referent_addr_raw(oop ref);
916 static inline oop next(oop ref);
917 static inline void set_next(oop ref, oop value);
918 static inline void set_next_raw(oop ref, oop value);
919 static inline HeapWord* next_addr_raw(oop ref);
920 static inline oop discovered(oop ref);
921 static inline void set_discovered(oop ref, oop value);
922 static inline void set_discovered_raw(oop ref, oop value);
923 static inline HeapWord* discovered_addr_raw(oop ref);
924 static inline oop queue(oop ref);
925 static inline void set_queue(oop ref, oop value);
926 static bool is_referent_field(oop obj, ptrdiff_t offset);
927 static inline bool is_phantom(oop ref);
928 };
929
930
931 // Interface to java.lang.ref.SoftReference objects
932
933 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
934 public:
935 static int timestamp_offset;
936 static int static_clock_offset;
937
938 // Accessors
939 static jlong timestamp(oop ref);
940
941 // Accessors for statics
942 static jlong clock();
943 static void set_clock(jlong value);
944
945 static void compute_offsets();
946 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
947 };
948
949 // Interface to java.lang.invoke.MethodHandle objects
950
951 class MethodHandleEntry;
952
953 class java_lang_invoke_MethodHandle: AllStatic {
954 friend class JavaClasses;
955
956 private:
957 static int _type_offset; // the MethodType of this MH
958 static int _form_offset; // the LambdaForm of this MH
959
960 static void compute_offsets();
961
962 public:
963 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
964
965 // Accessors
966 static oop type(oop mh);
967 static void set_type(oop mh, oop mtype);
968
969 static oop form(oop mh);
970 static void set_form(oop mh, oop lform);
971
972 // Testers
973 static bool is_subclass(Klass* klass) {
974 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
975 }
976 static bool is_instance(oop obj);
977
978 // Accessors for code generation:
979 static int type_offset_in_bytes() { return _type_offset; }
980 static int form_offset_in_bytes() { return _form_offset; }
981 };
982
983 // Interface to java.lang.invoke.DirectMethodHandle objects
984
985 class java_lang_invoke_DirectMethodHandle: AllStatic {
986 friend class JavaClasses;
987
988 private:
989 static int _member_offset; // the MemberName of this DMH
990
991 static void compute_offsets();
992
993 public:
994 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
995
996 // Accessors
997 static oop member(oop mh);
998
999 // Testers
1000 static bool is_subclass(Klass* klass) {
1001 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1002 }
1003 static bool is_instance(oop obj);
1004
1005 // Accessors for code generation:
1006 static int member_offset_in_bytes() { return _member_offset; }
1007 };
1008
1009 // Interface to java.lang.invoke.LambdaForm objects
1010 // (These are a private interface for managing adapter code generation.)
1011
1012 class java_lang_invoke_LambdaForm: AllStatic {
1013 friend class JavaClasses;
1014
1015 private:
1016 static int _vmentry_offset; // type is MemberName
1017
1018 static void compute_offsets();
1019
1020 public:
1021 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1022
1023 // Accessors
1024 static oop vmentry(oop lform);
1025 static void set_vmentry(oop lform, oop invoker);
1026
1027 // Testers
1028 static bool is_subclass(Klass* klass) {
1029 return SystemDictionary::LambdaForm_klass() != NULL &&
1030 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1031 }
1032 static bool is_instance(oop obj);
1033
1034 // Accessors for code generation:
1035 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1036 };
1037
1038
1039 // Interface to java.lang.invoke.MemberName objects
1040 // (These are a private interface for Java code to query the class hierarchy.)
1041
1042 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1043 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1044 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1045
1046 class java_lang_invoke_ResolvedMethodName : AllStatic {
1047 friend class JavaClasses;
1048
1049 static int _vmtarget_offset;
1050 static int _vmholder_offset;
1051
1052 static void compute_offsets();
1053 public:
1054 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1055
1056 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1057
1058 static Method* vmtarget(oop resolved_method);
1059 static void set_vmtarget(oop resolved_method, Method* method);
1060
1061 // find or create resolved member name
1062 static oop find_resolved_method(const methodHandle& m, TRAPS);
1063
1064 static bool is_instance(oop resolved_method);
1065 };
1066
1067
1068 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1069 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1070
1071
1072 class java_lang_invoke_MemberName: AllStatic {
1073 friend class JavaClasses;
1074
1075 private:
1076 // From java.lang.invoke.MemberName:
1077 // private Class<?> clazz; // class in which the method is defined
1078 // private String name; // may be null if not yet materialized
1079 // private Object type; // may be null if not yet materialized
1080 // private int flags; // modifier bits; see reflect.Modifier
1081 // private ResolvedMethodName method; // holds VM-specific target value
1082 // private intptr_t vmindex; // member index within class or interface
1083 static int _clazz_offset;
1084 static int _name_offset;
1085 static int _type_offset;
1086 static int _flags_offset;
1087 static int _method_offset;
1088 static int _vmindex_offset;
1089
1090 static void compute_offsets();
1091
1092 public:
1093 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1094 // Accessors
1095 static oop clazz(oop mname);
1096 static void set_clazz(oop mname, oop clazz);
1097
1098 static oop type(oop mname);
1099 static void set_type(oop mname, oop type);
1100
1101 static oop name(oop mname);
1102 static void set_name(oop mname, oop name);
1103
1104 static int flags(oop mname);
1105 static void set_flags(oop mname, int flags);
1106
1107 // Link through ResolvedMethodName field to get Method*
1108 static Method* vmtarget(oop mname);
1109 static void set_method(oop mname, oop method);
1110
1111 static intptr_t vmindex(oop mname);
1112 static void set_vmindex(oop mname, intptr_t index);
1113
1114 // Testers
1115 static bool is_subclass(Klass* klass) {
1116 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1117 }
1118 static bool is_instance(oop obj);
1119
1120 static bool is_method(oop obj);
1121
1122 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1123 enum {
1124 MN_IS_METHOD = 0x00010000, // method (not constructor)
1125 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1126 MN_IS_FIELD = 0x00040000, // field
1127 MN_IS_TYPE = 0x00080000, // nested type
1128 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1129 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1130 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1131 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1132 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1133 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1134 };
1135
1136 // Accessors for code generation:
1137 static int clazz_offset_in_bytes() { return _clazz_offset; }
1138 static int type_offset_in_bytes() { return _type_offset; }
1139 static int name_offset_in_bytes() { return _name_offset; }
1140 static int flags_offset_in_bytes() { return _flags_offset; }
1141 static int method_offset_in_bytes() { return _method_offset; }
1142 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1143 };
1144
1145
1146 // Interface to java.lang.invoke.MethodType objects
1147
1148 class java_lang_invoke_MethodType: AllStatic {
1149 friend class JavaClasses;
1150
1151 private:
1152 static int _rtype_offset;
1153 static int _ptypes_offset;
1154
1155 static void compute_offsets();
1156
1157 public:
1158 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1159 // Accessors
1160 static oop rtype(oop mt);
1161 static objArrayOop ptypes(oop mt);
1162
1163 static oop ptype(oop mt, int index);
1164 static int ptype_count(oop mt);
1165
1166 static int ptype_slot_count(oop mt); // extra counts for long/double
1167 static int rtype_slot_count(oop mt); // extra counts for long/double
1168
1169 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1170 static void print_signature(oop mt, outputStream* st);
1171
1172 static bool is_instance(oop obj);
1173
1174 static bool equals(oop mt1, oop mt2);
1175
1176 // Accessors for code generation:
1177 static int rtype_offset_in_bytes() { return _rtype_offset; }
1178 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1179 };
1180
1181
1182 // Interface to java.lang.invoke.CallSite objects
1183
1184 class java_lang_invoke_CallSite: AllStatic {
1185 friend class JavaClasses;
1186
1187 private:
1188 static int _target_offset;
1189 static int _context_offset;
1190
1191 static void compute_offsets();
1192
1193 public:
1194 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1195 // Accessors
1196 static oop target( oop site);
1197 static void set_target( oop site, oop target);
1198 static void set_target_volatile( oop site, oop target);
1199
1200 static oop context(oop site);
1201
1202 // Testers
1203 static bool is_subclass(Klass* klass) {
1204 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1205 }
1206 static bool is_instance(oop obj);
1207
1208 // Accessors for code generation:
1209 static int target_offset_in_bytes() { return _target_offset; }
1210 };
1211
1212 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1213
1214 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1215 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false)
1216
1217 class DependencyContext;
1218
1219 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1220 friend class JavaClasses;
1221
1222 private:
1223 static int _vmdependencies_offset;
1224
1225 static void compute_offsets();
1226
1227 public:
1228 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1229 // Accessors
1230 static DependencyContext vmdependencies(oop context);
1231
1232 // Testers
1233 static bool is_subclass(Klass* klass) {
1234 return klass->is_subclass_of(SystemDictionary::Context_klass());
1235 }
1236 static bool is_instance(oop obj);
1237 };
1238
1239 // Interface to java.security.AccessControlContext objects
1240
1241 class java_security_AccessControlContext: AllStatic {
1242 private:
1243 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1244 // so we compute the offsets at startup rather than hard-wiring them.
1245 static int _context_offset;
1246 static int _privilegedContext_offset;
1247 static int _isPrivileged_offset;
1248 static int _isAuthorized_offset;
1249
1250 static void compute_offsets();
1251 public:
1252 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1253 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1254
1255 static bool is_authorized(Handle context);
1256
1257 // Debugging/initialization
1258 friend class JavaClasses;
1259 };
1260
1261
1262 // Interface to java.lang.ClassLoader objects
1263
1264 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1265 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1266
1267 class java_lang_ClassLoader : AllStatic {
1268 private:
1269 static int _loader_data_offset;
1270 static bool offsets_computed;
1271 static int parent_offset;
1272 static int parallelCapable_offset;
1273 static int name_offset;
1274 static int unnamedModule_offset;
1275
1276 public:
1277 static void compute_offsets();
1278 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1279
1280 static ClassLoaderData* loader_data(oop loader);
1281 static ClassLoaderData* cmpxchg_loader_data(ClassLoaderData* new_data, oop loader, ClassLoaderData* expected_data);
1282
1283 static oop parent(oop loader);
1284 static oop name(oop loader);
1285 static bool isAncestor(oop loader, oop cl);
1286
1287 // Support for parallelCapable field
1288 static bool parallelCapable(oop the_class_mirror);
1289
1290 static bool is_trusted_loader(oop loader);
1291
1292 // Return true if this is one of the class loaders associated with
1293 // the generated bytecodes for reflection.
1294 static bool is_reflection_class_loader(oop loader);
1295
1296 // Fix for 4474172
1297 static oop non_reflection_class_loader(oop loader);
1298
1299 // Testers
1300 static bool is_subclass(Klass* klass) {
1301 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1302 }
1303 static bool is_instance(oop obj);
1304
1305 static oop unnamedModule(oop loader);
1306
1307 // Debugging
1308 friend class JavaClasses;
1309 friend class ClassFileParser; // access to number_of_fake_fields
1310
1311 // Describe ClassLoader for exceptions, tracing ...
1312 // Prints "<name>" (instance of <classname>, child of "<name>" <classname>).
1313 // If a classloader has no name, it prints <unnamed> instead. The output
1314 // for well known loaders (system/platform) is abbreviated.
1315 static const char* describe_external(const oop loader);
1316 };
1317
1318
1319 // Interface to java.lang.System objects
1320
1321 class java_lang_System : AllStatic {
1322 private:
1323 static int static_in_offset;
1324 static int static_out_offset;
1325 static int static_err_offset;
1326 static int static_security_offset;
1327
1328 public:
1329 static int in_offset_in_bytes();
1330 static int out_offset_in_bytes();
1331 static int err_offset_in_bytes();
1332
1333 static bool has_security_manager();
1334
1335 static void compute_offsets();
1336 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1337
1338 // Debugging
1339 friend class JavaClasses;
1340 };
1341
1342
1343 // Interface to java.lang.StackTraceElement objects
1344
1345 class java_lang_StackTraceElement: AllStatic {
1346 private:
1347 static int declaringClassObject_offset;
1348 static int classLoaderName_offset;
1349 static int moduleName_offset;
1350 static int moduleVersion_offset;
1351 static int declaringClass_offset;
1352 static int methodName_offset;
1353 static int fileName_offset;
1354 static int lineNumber_offset;
1355
1356 // Setters
1357 static void set_classLoaderName(oop element, oop value);
1358 static void set_moduleName(oop element, oop value);
1359 static void set_moduleVersion(oop element, oop value);
1360 static void set_declaringClass(oop element, oop value);
1361 static void set_methodName(oop element, oop value);
1362 static void set_fileName(oop element, oop value);
1363 static void set_lineNumber(oop element, int value);
1364 static void set_declaringClassObject(oop element, oop value);
1365
1366 public:
1367 // Create an instance of StackTraceElement
1368 static oop create(const methodHandle& method, int bci, TRAPS);
1369
1370 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1371 int version, int bci, Symbol* name, TRAPS);
1372
1373 static void compute_offsets();
1374 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1375
1376 // Debugging
1377 friend class JavaClasses;
1378 };
1379
1380
1381 class Backtrace: AllStatic {
1382 public:
1383 // Helper backtrace functions to store bci|version together.
1384 static int merge_bci_and_version(int bci, int version);
1385 static int merge_mid_and_cpref(int mid, int cpref);
1386 static int bci_at(unsigned int merged);
1387 static int version_at(unsigned int merged);
1388 static int mid_at(unsigned int merged);
1389 static int cpref_at(unsigned int merged);
1390 static int get_line_number(const methodHandle& method, int bci);
1391 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1392
1393 // Debugging
1394 friend class JavaClasses;
1395 };
1396
1397 // Interface to java.lang.StackFrameInfo objects
1398
1399 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1400 macro(java_lang_StackFrameInfo, version, short_signature, false)
1401
1402 class java_lang_StackFrameInfo: AllStatic {
1403 private:
1404 static int _memberName_offset;
1405 static int _bci_offset;
1406 static int _version_offset;
1407
1408 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1409
1410 public:
1411 // Setters
1412 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1413 static void set_bci(oop info, int value);
1414
1415 static void set_version(oop info, short value);
1416
1417 static void compute_offsets();
1418 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1419
1420 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1421
1422 // Debugging
1423 friend class JavaClasses;
1424 };
1425
1426 class java_lang_LiveStackFrameInfo: AllStatic {
1427 private:
1428 static int _monitors_offset;
1429 static int _locals_offset;
1430 static int _operands_offset;
1431 static int _mode_offset;
1432
1433 public:
1434 static void set_monitors(oop info, oop value);
1435 static void set_locals(oop info, oop value);
1436 static void set_operands(oop info, oop value);
1437 static void set_mode(oop info, int value);
1438
1439 static void compute_offsets();
1440 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1441
1442 // Debugging
1443 friend class JavaClasses;
1444 };
1445
1446 // Interface to java.lang.AssertionStatusDirectives objects
1447
1448 class java_lang_AssertionStatusDirectives: AllStatic {
1449 private:
1450 static int classes_offset;
1451 static int classEnabled_offset;
1452 static int packages_offset;
1453 static int packageEnabled_offset;
1454 static int deflt_offset;
1455
1456 public:
1457 // Setters
1458 static void set_classes(oop obj, oop val);
1459 static void set_classEnabled(oop obj, oop val);
1460 static void set_packages(oop obj, oop val);
1461 static void set_packageEnabled(oop obj, oop val);
1462 static void set_deflt(oop obj, bool val);
1463
1464 static void compute_offsets();
1465 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1466
1467 // Debugging
1468 friend class JavaClasses;
1469 };
1470
1471
1472 class java_nio_Buffer: AllStatic {
1473 private:
1474 static int _limit_offset;
1475
1476 public:
1477 static int limit_offset();
1478 static void compute_offsets();
1479 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1480 };
1481
1482 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1483 private:
1484 static int _owner_offset;
1485 public:
1486 static void initialize(TRAPS);
1487 static oop get_owner_threadObj(oop obj);
1488 };
1489
1490 // Use to declare fields that need to be injected into Java classes
1491 // for the JVM to use. The name_index and signature_index are
1492 // declared in vmSymbols. The may_be_java flag is used to declare
1493 // fields that might already exist in Java but should be injected if
1494 // they don't. Otherwise the field is unconditionally injected and
1495 // the JVM uses the injected one. This is to ensure that name
1496 // collisions don't occur. In general may_be_java should be false
1497 // unless there's a good reason.
1498
1499 class InjectedField {
1500 public:
1501 const SystemDictionary::WKID klass_id;
1502 const vmSymbols::SID name_index;
1503 const vmSymbols::SID signature_index;
1504 const bool may_be_java;
1505
1506
1507 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1508 Symbol* name() const { return lookup_symbol(name_index); }
1509 Symbol* signature() const { return lookup_symbol(signature_index); }
1510
1511 int compute_offset();
1512
1513 // Find the Symbol for this index
1514 static Symbol* lookup_symbol(int symbol_index) {
1515 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1516 }
1517 };
1518
1519 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1520 klass##_##name##_enum,
1521
1522 #define ALL_INJECTED_FIELDS(macro) \
1523 CLASS_INJECTED_FIELDS(macro) \
1524 CLASSLOADER_INJECTED_FIELDS(macro) \
1525 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1526 MEMBERNAME_INJECTED_FIELDS(macro) \
1527 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1528 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1529 MODULE_INJECTED_FIELDS(macro)
1530
1531 // Interface to hard-coded offset checking
1532
1533 class JavaClasses : AllStatic {
1534 private:
1535
1536 static InjectedField _injected_fields[];
1537
1538 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1539 public:
1540 enum InjectedFieldID {
1541 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1542 MAX_enum
1543 };
1544
1545 static int compute_injected_offset(InjectedFieldID id);
1546
1547 static void compute_hard_coded_offsets();
1548 static void compute_offsets();
1549 static void check_offsets() PRODUCT_RETURN;
1550
1551 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1552 };
1553
1554 #undef DECLARE_INJECTED_FIELD_ENUM
1555
1556 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP