1 /*
2 * Copyright (c) 1997, 2016, 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
75 // Instance creation
76 static Handle create_from_unicode(jchar* unicode, int len, TRAPS);
77 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS);
78 static Handle create_from_str(const char* utf8_str, TRAPS);
79 static oop create_oop_from_str(const char* utf8_str, TRAPS);
80 static Handle create_from_symbol(Symbol* symbol, TRAPS);
81 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
82 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
83
84 static bool has_hash_field() {
85 assert(initialized, "Must be initialized");
86 return (hash_offset > 0);
87 }
88 static bool has_coder_field() {
89 assert(initialized, "Must be initialized");
90 return (coder_offset > 0);
91 }
92
93 static void set_compact_strings(bool value);
94
95 static int value_offset_in_bytes() {
96 assert(initialized && (value_offset > 0), "Must be initialized");
97 return value_offset;
98 }
99 static int hash_offset_in_bytes() {
100 assert(initialized && (hash_offset > 0), "Must be initialized");
101 return hash_offset;
102 }
103 static int coder_offset_in_bytes() {
104 assert(initialized && (coder_offset > 0), "Must be initialized");
105 return coder_offset;
106 }
107
108 static inline void set_value_raw(oop string, typeArrayOop buffer);
109 static inline void set_value(oop string, typeArrayOop buffer);
110 static inline void set_hash(oop string, unsigned int hash);
111
112 // Accessors
113 static inline typeArrayOop value(oop java_string);
114 static inline unsigned int hash(oop java_string);
115 static inline bool is_latin1(oop java_string);
116 static inline int length(oop java_string);
117 static int utf8_length(oop java_string);
118
119 // String converters
120 static char* as_utf8_string(oop java_string);
121 static char* as_utf8_string(oop java_string, char* buf, int buflen);
122 static char* as_utf8_string(oop java_string, int start, int len);
123 static char* as_utf8_string(oop java_string, int start, int len, char* buf, int buflen);
124 static char* as_platform_dependent_str(Handle java_string, TRAPS);
125 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
126 // produce an ascii string with all other values quoted using \u####
127 static char* as_quoted_ascii(oop java_string);
128
129 // Compute the hash value for a java.lang.String object which would
130 // contain the characters passed in.
131 //
132 // As the hash value used by the String object itself, in
133 // String.hashCode(). This value is normally calculated in Java code
134 // in the String.hashCode method(), but is precomputed for String
135 // objects in the shared archive file.
136 // hash P(31) from Kernighan & Ritchie
137 //
138 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
139 static unsigned int hash_code(const jchar* s, int len) {
140 unsigned int h = 0;
141 while (len-- > 0) {
142 h = 31*h + (unsigned int) *s;
143 s++;
144 }
145 return h;
146 }
147
148 static unsigned int hash_code(const jbyte* s, int len) {
149 unsigned int h = 0;
150 while (len-- > 0) {
151 h = 31*h + (((unsigned int) *s) & 0xFF);
152 s++;
153 }
154 return h;
155 }
156
157 static unsigned int hash_code(oop java_string);
158
159 static bool equals(oop java_string, jchar* chars, int len);
160 static bool equals(oop str1, oop str2);
161
162 // Conversion between '.' and '/' formats
163 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
164 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
165
166 // Conversion
167 static Symbol* as_symbol(Handle java_string, TRAPS);
168 static Symbol* as_symbol_or_null(oop java_string);
169
170 // Testers
171 static bool is_instance(oop obj);
172 static inline bool is_instance_inlined(oop obj);
173
174 // Debugging
175 static void print(oop java_string, outputStream* st);
176 friend class JavaClasses;
177 friend class StringTable;
178 };
179
180
181 // Interface to java.lang.Class objects
182
183 #define CLASS_INJECTED_FIELDS(macro) \
184 macro(java_lang_Class, klass, intptr_signature, false) \
185 macro(java_lang_Class, array_klass, intptr_signature, false) \
186 macro(java_lang_Class, oop_size, int_signature, false) \
187 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
188 macro(java_lang_Class, protection_domain, object_signature, false) \
189 macro(java_lang_Class, signers, object_signature, false)
190
191 class java_lang_Class : AllStatic {
192 friend class VMStructs;
193 friend class JVMCIVMStructs;
194
195 private:
196 // The fake offsets are added by the class loader when java.lang.Class is loaded
197
198 static int _klass_offset;
199 static int _array_klass_offset;
200
201 static int _oop_size_offset;
202 static int _static_oop_field_count_offset;
203
204 static int _protection_domain_offset;
205 static int _init_lock_offset;
206 static int _signers_offset;
207 static int _class_loader_offset;
208 static int _module_offset;
209 static int _component_mirror_offset;
210
211 static bool offsets_computed;
212 static int classRedefinedCount_offset;
213
214 static GrowableArray<Klass*>* _fixup_mirror_list;
215 static GrowableArray<Klass*>* _fixup_module_field_list;
216
217 static void set_init_lock(oop java_class, oop init_lock);
218 static void set_protection_domain(oop java_class, oop protection_domain);
219 static void set_class_loader(oop java_class, oop class_loader);
220 static void set_component_mirror(oop java_class, oop comp_mirror);
221 static void initialize_mirror_fields(KlassHandle k, Handle mirror, Handle protection_domain, TRAPS);
222 public:
223 static void compute_offsets();
224
225 // Instance creation
226 static void create_mirror(KlassHandle k, Handle class_loader, Handle module,
227 Handle protection_domain, TRAPS);
228 static void fixup_mirror(KlassHandle k, TRAPS);
229 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
230
231 static void fixup_module_field(KlassHandle k, Handle module);
232
233 // Conversion
234 static Klass* as_Klass(oop java_class);
235 static void set_klass(oop java_class, Klass* klass);
236 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
237 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) {
238 Klass* refk_oop = NULL;
239 BasicType result = as_BasicType(java_class, &refk_oop);
240 (*reference_klass) = KlassHandle(refk_oop);
241 return result;
242 }
243 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
244 static void print_signature(oop java_class, outputStream *st);
245 static const char* as_external_name(oop java_class);
246 // Testing
247 static bool is_instance(oop obj);
248
249 static bool is_primitive(oop java_class);
250 static BasicType primitive_type(oop java_class);
251 static oop primitive_mirror(BasicType t);
252 // JVM_NewArray support
253 static Klass* array_klass(oop java_class);
254 static void set_array_klass(oop java_class, Klass* klass);
255 // compiler support for class operations
256 static int klass_offset_in_bytes() { return _klass_offset; }
257 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
258 // Support for classRedefinedCount field
259 static int classRedefinedCount(oop the_class_mirror);
260 static void set_classRedefinedCount(oop the_class_mirror, int value);
261
262 // Support for embedded per-class oops
263 static oop protection_domain(oop java_class);
264 static oop init_lock(oop java_class);
265 static oop component_mirror(oop java_class);
266 static objArrayOop signers(oop java_class);
267 static void set_signers(oop java_class, objArrayOop signers);
268
269 static oop class_loader(oop java_class);
270 static void set_module(oop java_class, oop module);
271 static oop module(oop java_class);
272
273 static int oop_size(oop java_class);
274 static void set_oop_size(oop java_class, int size);
275 static int static_oop_field_count(oop java_class);
276 static void set_static_oop_field_count(oop java_class, int size);
277
278 static GrowableArray<Klass*>* fixup_mirror_list() {
279 return _fixup_mirror_list;
280 }
281 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
282 _fixup_mirror_list = v;
283 }
284
285 static GrowableArray<Klass*>* fixup_module_field_list() {
286 return _fixup_module_field_list;
287 }
288 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
289 _fixup_module_field_list = v;
290 }
291
292 // Debugging
293 friend class JavaClasses;
294 friend class InstanceKlass; // verification code accesses offsets
295 friend class ClassFileParser; // access to number_of_fake_fields
296 };
297
298 // Interface to java.lang.Thread objects
299
300 class java_lang_Thread : AllStatic {
301 private:
302 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
303 // so we compute the offsets at startup rather than hard-wiring them.
304 static int _name_offset;
305 static int _group_offset;
306 static int _contextClassLoader_offset;
307 static int _inheritedAccessControlContext_offset;
308 static int _priority_offset;
309 static int _eetop_offset;
310 static int _daemon_offset;
311 static int _stillborn_offset;
312 static int _stackSize_offset;
313 static int _tid_offset;
314 static int _thread_status_offset;
315 static int _park_blocker_offset;
316 static int _park_event_offset ;
317
318 static void compute_offsets();
319
320 public:
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 // parent ThreadGroup
422 static oop parent(oop java_thread_group);
423 // name
424 static const char* name(oop java_thread_group);
425 // ("name as oop" accessor is not necessary)
426 // Number of threads in group
427 static int nthreads(oop java_thread_group);
428 // threads
429 static objArrayOop threads(oop java_thread_group);
430 // Number of threads in group
431 static int ngroups(oop java_thread_group);
432 // groups
433 static objArrayOop groups(oop java_thread_group);
434 // maxPriority in group
435 static ThreadPriority maxPriority(oop java_thread_group);
436 // Destroyed
437 static bool is_destroyed(oop java_thread_group);
438 // Daemon
439 static bool is_daemon(oop java_thread_group);
440 // Debugging
441 friend class JavaClasses;
442 };
443
444
445
446 // Interface to java.lang.Throwable objects
447
448 class java_lang_Throwable: AllStatic {
449 friend class BacktraceBuilder;
450 friend class BacktraceIterator;
451
452 private:
453 // Offsets
454 enum {
455 hc_backtrace_offset = 0,
456 hc_detailMessage_offset = 1,
457 hc_cause_offset = 2, // New since 1.4
458 hc_stackTrace_offset = 3 // New since 1.4
459 };
460 enum {
461 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7
462 };
463 // Trace constants
464 enum {
465 trace_methods_offset = 0,
466 trace_bcis_offset = 1,
467 trace_mirrors_offset = 2,
468 trace_cprefs_offset = 3,
469 trace_next_offset = 4,
470 trace_size = 5,
471 trace_chunk_size = 32
472 };
473
474 static int backtrace_offset;
475 static int detailMessage_offset;
476 static int stackTrace_offset;
477 static int depth_offset;
478 static int static_unassigned_stacktrace_offset;
479
480 // StackTrace (programmatic access, new since 1.4)
481 static void clear_stacktrace(oop throwable);
482 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
483 static void set_stacktrace(oop throwable, oop st_element_array);
484 static oop unassigned_stacktrace();
485
486 public:
487 // Backtrace
488 static oop backtrace(oop throwable);
489 static void set_backtrace(oop throwable, oop value);
490 static int depth(oop throwable);
491 static void set_depth(oop throwable, int value);
492 // Needed by JVMTI to filter out this internal field.
493 static int get_backtrace_offset() { return backtrace_offset;}
494 static int get_detailMessage_offset() { return detailMessage_offset;}
495 // Message
496 static oop message(Handle throwable);
497 static void set_message(oop throwable, oop value);
498 static Symbol* detail_message(oop throwable);
499 static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
500 static void print_stack_usage(Handle stream);
501
502 static void compute_offsets();
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(Handle 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 // Accessors
534 static jboolean override(oop reflect);
535 static void set_override(oop reflect, jboolean value);
536
537 // Debugging
538 friend class JavaClasses;
539 };
540
541
542 // Interface to java.lang.reflect.Method objects
543
544 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
545 private:
546 // Note that to reduce dependencies on the JDK we compute these
547 // offsets at run-time.
548 static int clazz_offset;
549 static int name_offset;
550 static int returnType_offset;
551 static int parameterTypes_offset;
552 static int exceptionTypes_offset;
553 static int slot_offset;
554 static int modifiers_offset;
555 static int signature_offset;
556 static int annotations_offset;
557 static int parameter_annotations_offset;
558 static int annotation_default_offset;
559 static int type_annotations_offset;
560
561 static void compute_offsets();
562
563 public:
564 // Allocation
565 static Handle create(TRAPS);
566
567 // Accessors
568 static oop clazz(oop reflect);
569 static void set_clazz(oop reflect, oop value);
570
571 static oop name(oop method);
572 static void set_name(oop method, oop value);
573
574 static oop return_type(oop method);
575 static void set_return_type(oop method, oop value);
576
577 static oop parameter_types(oop method);
578 static void set_parameter_types(oop method, oop value);
579
580 static oop exception_types(oop method);
581 static void set_exception_types(oop method, oop value);
582
583 static int slot(oop reflect);
584 static void set_slot(oop reflect, int value);
585
586 static int modifiers(oop method);
587 static void set_modifiers(oop method, int value);
588
589 static bool has_signature_field();
590 static oop signature(oop method);
591 static void set_signature(oop method, oop value);
592
593 static bool has_annotations_field();
594 static oop annotations(oop method);
595 static void set_annotations(oop method, oop value);
596
597 static bool has_parameter_annotations_field();
598 static oop parameter_annotations(oop method);
599 static void set_parameter_annotations(oop method, oop value);
600
601 static bool has_annotation_default_field();
602 static oop annotation_default(oop method);
603 static void set_annotation_default(oop method, oop value);
604
605 static bool has_type_annotations_field();
606 static oop type_annotations(oop method);
607 static void set_type_annotations(oop method, oop value);
608
609 // Debugging
610 friend class JavaClasses;
611 };
612
613
614 // Interface to java.lang.reflect.Constructor objects
615
616 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
617 private:
618 // Note that to reduce dependencies on the JDK we compute these
619 // offsets at run-time.
620 static int clazz_offset;
621 static int parameterTypes_offset;
622 static int exceptionTypes_offset;
623 static int slot_offset;
624 static int modifiers_offset;
625 static int signature_offset;
626 static int annotations_offset;
627 static int parameter_annotations_offset;
628 static int type_annotations_offset;
629
630 static void compute_offsets();
631
632 public:
633 // Allocation
634 static Handle create(TRAPS);
635
636 // Accessors
637 static oop clazz(oop reflect);
638 static void set_clazz(oop reflect, oop value);
639
640 static oop parameter_types(oop constructor);
641 static void set_parameter_types(oop constructor, oop value);
642
643 static oop exception_types(oop constructor);
644 static void set_exception_types(oop constructor, oop value);
645
646 static int slot(oop reflect);
647 static void set_slot(oop reflect, int value);
648
649 static int modifiers(oop constructor);
650 static void set_modifiers(oop constructor, int value);
651
652 static bool has_signature_field();
653 static oop signature(oop constructor);
654 static void set_signature(oop constructor, oop value);
655
656 static bool has_annotations_field();
657 static oop annotations(oop constructor);
658 static void set_annotations(oop constructor, oop value);
659
660 static bool has_parameter_annotations_field();
661 static oop parameter_annotations(oop method);
662 static void set_parameter_annotations(oop method, oop value);
663
664 static bool has_type_annotations_field();
665 static oop type_annotations(oop constructor);
666 static void set_type_annotations(oop constructor, oop value);
667
668 // Debugging
669 friend class JavaClasses;
670 };
671
672
673 // Interface to java.lang.reflect.Field objects
674
675 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
676 private:
677 // Note that to reduce dependencies on the JDK we compute these
678 // offsets at run-time.
679 static int clazz_offset;
680 static int name_offset;
681 static int type_offset;
682 static int slot_offset;
683 static int modifiers_offset;
684 static int signature_offset;
685 static int annotations_offset;
686 static int type_annotations_offset;
687
688 static void compute_offsets();
689
690 public:
691 // Allocation
692 static Handle create(TRAPS);
693
694 // Accessors
695 static oop clazz(oop reflect);
696 static void set_clazz(oop reflect, oop value);
697
698 static oop name(oop field);
699 static void set_name(oop field, oop value);
700
701 static oop type(oop field);
702 static void set_type(oop field, oop value);
703
704 static int slot(oop reflect);
705 static void set_slot(oop reflect, int value);
706
707 static int modifiers(oop field);
708 static void set_modifiers(oop field, int value);
709
710 static bool has_signature_field();
711 static oop signature(oop constructor);
712 static void set_signature(oop constructor, oop value);
713
714 static bool has_annotations_field();
715 static oop annotations(oop constructor);
716 static void set_annotations(oop constructor, oop value);
717
718 static bool has_parameter_annotations_field();
719 static oop parameter_annotations(oop method);
720 static void set_parameter_annotations(oop method, oop value);
721
722 static bool has_annotation_default_field();
723 static oop annotation_default(oop method);
724 static void set_annotation_default(oop method, oop value);
725
726 static bool has_type_annotations_field();
727 static oop type_annotations(oop field);
728 static void set_type_annotations(oop field, oop value);
729
730 // Debugging
731 friend class JavaClasses;
732 };
733
734 class java_lang_reflect_Parameter {
735 private:
736 // Note that to reduce dependencies on the JDK we compute these
737 // offsets at run-time.
738 static int name_offset;
739 static int modifiers_offset;
740 static int index_offset;
741 static int executable_offset;
742
743 static void compute_offsets();
744
745 public:
746 // Allocation
747 static Handle create(TRAPS);
748
749 // Accessors
750 static oop name(oop field);
751 static void set_name(oop field, oop value);
752
753 static int index(oop reflect);
754 static void set_index(oop reflect, int value);
755
756 static int modifiers(oop reflect);
757 static void set_modifiers(oop reflect, int value);
758
759 static oop executable(oop constructor);
760 static void set_executable(oop constructor, oop value);
761
762 friend class JavaClasses;
763 };
764
765 #define MODULE_INJECTED_FIELDS(macro) \
766 macro(java_lang_reflect_Module, module_entry, intptr_signature, false)
767
768 class java_lang_reflect_Module {
769 private:
770 static int loader_offset;
771 static int name_offset;
772 static int _module_entry_offset;
773 static void compute_offsets();
774
775 public:
776 // Allocation
777 static Handle create(Handle loader, Handle module_name, TRAPS);
778
779 // Testers
780 static bool is_instance(oop obj);
781
782 // Accessors
783 static oop loader(oop module);
784 static void set_loader(oop module, oop value);
785
786 static oop name(oop module);
787 static void set_name(oop module, oop value);
788
789 static ModuleEntry* module_entry(oop module, TRAPS);
790 static void set_module_entry(oop module, ModuleEntry* module_entry);
791
792 friend class JavaClasses;
793 };
794
795 // Interface to jdk.internal.reflect.ConstantPool objects
796 class reflect_ConstantPool {
797 private:
798 // Note that to reduce dependencies on the JDK we compute these
799 // offsets at run-time.
800 static int _oop_offset;
801
802 static void compute_offsets();
803
804 public:
805 // Allocation
806 static Handle create(TRAPS);
807
808 // Accessors
809 static void set_cp(oop reflect, ConstantPool* value);
810 static int oop_offset() {
811 return _oop_offset;
812 }
813
814 static ConstantPool* get_cp(oop reflect);
815
816 // Debugging
817 friend class JavaClasses;
818 };
819
820 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
821 class reflect_UnsafeStaticFieldAccessorImpl {
822 private:
823 static int _base_offset;
824 static void compute_offsets();
825
826 public:
827 static int base_offset() {
828 return _base_offset;
829 }
830
831 // Debugging
832 friend class JavaClasses;
833 };
834
835 // Interface to java.lang primitive type boxing objects:
836 // - java.lang.Boolean
837 // - java.lang.Character
838 // - java.lang.Float
839 // - java.lang.Double
840 // - java.lang.Byte
841 // - java.lang.Short
842 // - java.lang.Integer
843 // - java.lang.Long
844
845 // This could be separated out into 8 individual classes.
846
847 class java_lang_boxing_object: AllStatic {
848 private:
849 enum {
850 hc_value_offset = 0
851 };
852 static int value_offset;
853 static int long_value_offset;
854
855 static oop initialize_and_allocate(BasicType type, TRAPS);
856 public:
857 // Allocation. Returns a boxed value, or NULL for invalid type.
858 static oop create(BasicType type, jvalue* value, TRAPS);
859 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
860 static BasicType get_value(oop box, jvalue* value);
861 static BasicType set_value(oop box, jvalue* value);
862 static BasicType basic_type(oop box);
863 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
864 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
865 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
866 static void print(BasicType type, jvalue* value, outputStream* st);
867
868 static int value_offset_in_bytes(BasicType type) {
869 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
870 value_offset;
871 }
872
873 // Debugging
874 friend class JavaClasses;
875 };
876
877
878
879 // Interface to java.lang.ref.Reference objects
880
881 class java_lang_ref_Reference: AllStatic {
882 public:
883 enum {
884 hc_referent_offset = 0,
885 hc_queue_offset = 1,
886 hc_next_offset = 2,
887 hc_discovered_offset = 3 // Is not last, see SoftRefs.
888 };
889 enum {
890 hc_static_lock_offset = 0,
891 hc_static_pending_offset = 1
892 };
893
894 static int referent_offset;
895 static int queue_offset;
896 static int next_offset;
897 static int discovered_offset;
898 static int static_lock_offset;
899 static int static_pending_offset;
900 static int number_of_fake_oop_fields;
901
902 // Accessors
903 static inline oop referent(oop ref);
904 static inline void set_referent(oop ref, oop value);
905 static inline void set_referent_raw(oop ref, oop value);
906 static inline HeapWord* referent_addr(oop ref);
907 static inline oop next(oop ref);
908 static inline void set_next(oop ref, oop value);
909 static inline void set_next_raw(oop ref, oop value);
910 static inline HeapWord* next_addr(oop ref);
911 static inline oop discovered(oop ref);
912 static inline void set_discovered(oop ref, oop value);
913 static inline void set_discovered_raw(oop ref, oop value);
914 static inline HeapWord* discovered_addr(oop ref);
915
916 // Accessors for statics
917 static oop pending_list_lock();
918 static oop pending_list();
919
920 static HeapWord* pending_list_lock_addr();
921 static HeapWord* pending_list_addr();
922 };
923
924
925 // Interface to java.lang.ref.SoftReference objects
926
927 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
928 public:
929 enum {
930 // The timestamp is a long field and may need to be adjusted for alignment.
931 hc_timestamp_offset = hc_discovered_offset + 1
932 };
933 enum {
934 hc_static_clock_offset = 0
935 };
936
937 static int timestamp_offset;
938 static int static_clock_offset;
939
940 // Accessors
941 static jlong timestamp(oop ref);
942
943 // Accessors for statics
944 static jlong clock();
945 static void set_clock(jlong value);
946 };
947
948 // Interface to java.lang.invoke.MethodHandle objects
949
950 class MethodHandleEntry;
951
952 class java_lang_invoke_MethodHandle: AllStatic {
953 friend class JavaClasses;
954
955 private:
956 static int _type_offset; // the MethodType of this MH
957 static int _form_offset; // the LambdaForm of this MH
958
959 static void compute_offsets();
960
961 public:
962 // Accessors
963 static oop type(oop mh);
964 static void set_type(oop mh, oop mtype);
965
966 static oop form(oop mh);
967 static void set_form(oop mh, oop lform);
968
969 // Testers
970 static bool is_subclass(Klass* klass) {
971 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
972 }
973 static bool is_instance(oop obj);
974
975 // Accessors for code generation:
976 static int type_offset_in_bytes() { return _type_offset; }
977 static int form_offset_in_bytes() { return _form_offset; }
978 };
979
980 // Interface to java.lang.invoke.DirectMethodHandle objects
981
982 class java_lang_invoke_DirectMethodHandle: AllStatic {
983 friend class JavaClasses;
984
985 private:
986 static int _member_offset; // the MemberName of this DMH
987
988 static void compute_offsets();
989
990 public:
991 // Accessors
992 static oop member(oop mh);
993
994 // Testers
995 static bool is_subclass(Klass* klass) {
996 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
997 }
998 static bool is_instance(oop obj);
999
1000 // Accessors for code generation:
1001 static int member_offset_in_bytes() { return _member_offset; }
1002 };
1003
1004 // Interface to java.lang.invoke.LambdaForm objects
1005 // (These are a private interface for managing adapter code generation.)
1006
1007 class java_lang_invoke_LambdaForm: AllStatic {
1008 friend class JavaClasses;
1009
1010 private:
1011 static int _vmentry_offset; // type is MemberName
1012
1013 static void compute_offsets();
1014
1015 public:
1016 // Accessors
1017 static oop vmentry(oop lform);
1018 static void set_vmentry(oop lform, oop invoker);
1019
1020 // Testers
1021 static bool is_subclass(Klass* klass) {
1022 return SystemDictionary::LambdaForm_klass() != NULL &&
1023 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1024 }
1025 static bool is_instance(oop obj);
1026
1027 // Accessors for code generation:
1028 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1029 };
1030
1031
1032 // Interface to java.lang.invoke.MemberName objects
1033 // (These are a private interface for Java code to query the class hierarchy.)
1034
1035 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1036 macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \
1037 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) \
1038 macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false)
1039
1040 class java_lang_invoke_MemberName: AllStatic {
1041 friend class JavaClasses;
1042
1043 private:
1044 // From java.lang.invoke.MemberName:
1045 // private Class<?> clazz; // class in which the method is defined
1046 // private String name; // may be null if not yet materialized
1047 // private Object type; // may be null if not yet materialized
1048 // private int flags; // modifier bits; see reflect.Modifier
1049 // private intptr vmtarget; // VM-specific target value
1050 // private intptr_t vmindex; // member index within class or interface
1051 static int _clazz_offset;
1052 static int _name_offset;
1053 static int _type_offset;
1054 static int _flags_offset;
1055 static int _vmtarget_offset;
1056 static int _vmloader_offset;
1057 static int _vmindex_offset;
1058
1059 static void compute_offsets();
1060
1061 public:
1062 // Accessors
1063 static oop clazz(oop mname);
1064 static void set_clazz(oop mname, oop clazz);
1065
1066 static oop type(oop mname);
1067 static void set_type(oop mname, oop type);
1068
1069 static oop name(oop mname);
1070 static void set_name(oop mname, oop name);
1071
1072 static int flags(oop mname);
1073 static void set_flags(oop mname, int flags);
1074
1075 static Metadata* vmtarget(oop mname);
1076 static void set_vmtarget(oop mname, Metadata* target);
1077
1078 static intptr_t vmindex(oop mname);
1079 static void set_vmindex(oop mname, intptr_t index);
1080
1081 // Testers
1082 static bool is_subclass(Klass* klass) {
1083 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1084 }
1085 static bool is_instance(oop obj);
1086
1087 static bool is_method(oop obj);
1088
1089 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1090 enum {
1091 MN_IS_METHOD = 0x00010000, // method (not constructor)
1092 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1093 MN_IS_FIELD = 0x00040000, // field
1094 MN_IS_TYPE = 0x00080000, // nested type
1095 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1096 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1097 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1098 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1099 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1100 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1101 };
1102
1103 // Accessors for code generation:
1104 static int clazz_offset_in_bytes() { return _clazz_offset; }
1105 static int type_offset_in_bytes() { return _type_offset; }
1106 static int name_offset_in_bytes() { return _name_offset; }
1107 static int flags_offset_in_bytes() { return _flags_offset; }
1108 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1109 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1110
1111 static bool equals(oop mt1, oop mt2);
1112 };
1113
1114
1115 // Interface to java.lang.invoke.MethodType objects
1116
1117 class java_lang_invoke_MethodType: AllStatic {
1118 friend class JavaClasses;
1119
1120 private:
1121 static int _rtype_offset;
1122 static int _ptypes_offset;
1123
1124 static void compute_offsets();
1125
1126 public:
1127 // Accessors
1128 static oop rtype(oop mt);
1129 static objArrayOop ptypes(oop mt);
1130
1131 static oop ptype(oop mt, int index);
1132 static int ptype_count(oop mt);
1133
1134 static int ptype_slot_count(oop mt); // extra counts for long/double
1135 static int rtype_slot_count(oop mt); // extra counts for long/double
1136
1137 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1138 static void print_signature(oop mt, outputStream* st);
1139
1140 static bool is_instance(oop obj);
1141
1142 static bool equals(oop mt1, oop mt2);
1143
1144 // Accessors for code generation:
1145 static int rtype_offset_in_bytes() { return _rtype_offset; }
1146 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1147 };
1148
1149
1150 // Interface to java.lang.invoke.CallSite objects
1151
1152 class java_lang_invoke_CallSite: AllStatic {
1153 friend class JavaClasses;
1154
1155 private:
1156 static int _target_offset;
1157 static int _context_offset;
1158
1159 static void compute_offsets();
1160
1161 public:
1162 // Accessors
1163 static oop target( oop site);
1164 static void set_target( oop site, oop target);
1165 static void set_target_volatile( oop site, oop target);
1166
1167 static oop context(oop site);
1168
1169 // Testers
1170 static bool is_subclass(Klass* klass) {
1171 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1172 }
1173 static bool is_instance(oop obj);
1174
1175 // Accessors for code generation:
1176 static int target_offset_in_bytes() { return _target_offset; }
1177 };
1178
1179 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1180
1181 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1182 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false)
1183
1184 class DependencyContext;
1185
1186 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1187 friend class JavaClasses;
1188
1189 private:
1190 static int _vmdependencies_offset;
1191
1192 static void compute_offsets();
1193
1194 public:
1195 // Accessors
1196 static DependencyContext vmdependencies(oop context);
1197
1198 // Testers
1199 static bool is_subclass(Klass* klass) {
1200 return klass->is_subclass_of(SystemDictionary::Context_klass());
1201 }
1202 static bool is_instance(oop obj);
1203 };
1204
1205 // Interface to java.security.AccessControlContext objects
1206
1207 class java_security_AccessControlContext: AllStatic {
1208 private:
1209 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1210 // so we compute the offsets at startup rather than hard-wiring them.
1211 static int _context_offset;
1212 static int _privilegedContext_offset;
1213 static int _isPrivileged_offset;
1214 static int _isAuthorized_offset;
1215
1216 static void compute_offsets();
1217 public:
1218 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1219
1220 static bool is_authorized(Handle context);
1221
1222 // Debugging/initialization
1223 friend class JavaClasses;
1224 };
1225
1226
1227 // Interface to java.lang.ClassLoader objects
1228
1229 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1230 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1231
1232 class java_lang_ClassLoader : AllStatic {
1233 private:
1234 // The fake offsets are added by the class loader when java.lang.Class is loaded
1235 enum {
1236 hc_parent_offset = 0
1237 };
1238 static int _loader_data_offset;
1239 static bool offsets_computed;
1240 static int parent_offset;
1241 static int parallelCapable_offset;
1242 static int unnamedModule_offset;
1243
1244 public:
1245 static void compute_offsets();
1246
1247 static ClassLoaderData** loader_data_addr(oop loader);
1248 static ClassLoaderData* loader_data(oop loader);
1249
1250 static oop parent(oop loader);
1251 static bool isAncestor(oop loader, oop cl);
1252
1253 // Support for parallelCapable field
1254 static bool parallelCapable(oop the_class_mirror);
1255
1256 static bool is_trusted_loader(oop loader);
1257
1258 // Fix for 4474172
1259 static oop non_reflection_class_loader(oop loader);
1260
1261 // Testers
1262 static bool is_subclass(Klass* klass) {
1263 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1264 }
1265 static bool is_instance(oop obj);
1266
1267 static oop unnamedModule(oop loader);
1268
1269 // Debugging
1270 friend class JavaClasses;
1271 friend class ClassFileParser; // access to number_of_fake_fields
1272 };
1273
1274
1275 // Interface to java.lang.System objects
1276
1277 class java_lang_System : AllStatic {
1278 private:
1279 enum {
1280 hc_static_in_offset = 0,
1281 hc_static_out_offset = 1,
1282 hc_static_err_offset = 2,
1283 hc_static_security_offset = 3
1284 };
1285
1286 static int static_in_offset;
1287 static int static_out_offset;
1288 static int static_err_offset;
1289 static int static_security_offset;
1290
1291 public:
1292 static int in_offset_in_bytes();
1293 static int out_offset_in_bytes();
1294 static int err_offset_in_bytes();
1295
1296 static bool has_security_manager();
1297
1298 // Debugging
1299 friend class JavaClasses;
1300 };
1301
1302
1303 // Interface to java.lang.StackTraceElement objects
1304
1305 class java_lang_StackTraceElement: AllStatic {
1306 private:
1307 enum {
1308 hc_moduleName_offset = 0,
1309 hc_moduleVersion_offset = 1,
1310 hc_declaringClass_offset = 2,
1311 hc_methodName_offset = 3,
1312 hc_fileName_offset = 4,
1313 hc_lineNumber_offset = 5
1314 };
1315
1316 static int moduleName_offset;
1317 static int moduleVersion_offset;
1318 static int declaringClass_offset;
1319 static int methodName_offset;
1320 static int fileName_offset;
1321 static int lineNumber_offset;
1322
1323 // Setters
1324 static void set_moduleName(oop element, oop value);
1325 static void set_moduleVersion(oop element, oop value);
1326 static void set_declaringClass(oop element, oop value);
1327 static void set_methodName(oop element, oop value);
1328 static void set_fileName(oop element, oop value);
1329 static void set_lineNumber(oop element, int value);
1330
1331 public:
1332 // Create an instance of StackTraceElement
1333 static oop create(const methodHandle& method, int bci, TRAPS);
1334
1335 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1336 int version, int bci, int cpref, TRAPS);
1337
1338 // Debugging
1339 friend class JavaClasses;
1340 };
1341
1342
1343 class Backtrace: AllStatic {
1344 public:
1345 // Helper backtrace functions to store bci|version together.
1346 static int merge_bci_and_version(int bci, int version);
1347 static int merge_mid_and_cpref(int mid, int cpref);
1348 static int bci_at(unsigned int merged);
1349 static int version_at(unsigned int merged);
1350 static int mid_at(unsigned int merged);
1351 static int cpref_at(unsigned int merged);
1352 static int get_line_number(const methodHandle& method, int bci);
1353 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1354
1355 // Debugging
1356 friend class JavaClasses;
1357 };
1358
1359 // Interface to java.lang.StackFrameInfo objects
1360
1361 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1362 macro(java_lang_StackFrameInfo, version, short_signature, false)
1363
1364 class java_lang_StackFrameInfo: AllStatic {
1365 private:
1366 static int _declaringClass_offset;
1367 static int _memberName_offset;
1368 static int _bci_offset;
1369 static int _version_offset;
1370
1371 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1372
1373 public:
1374 // Setters
1375 static void set_declaringClass(oop info, oop value);
1376 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci);
1377 static void set_bci(oop info, int value);
1378
1379 static void set_version(oop info, short value);
1380
1381 static void compute_offsets();
1382
1383 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1384
1385 // Debugging
1386 friend class JavaClasses;
1387 };
1388
1389 class java_lang_LiveStackFrameInfo: AllStatic {
1390 private:
1391 static int _monitors_offset;
1392 static int _locals_offset;
1393 static int _operands_offset;
1394
1395 public:
1396 static void set_monitors(oop info, oop value);
1397 static void set_locals(oop info, oop value);
1398 static void set_operands(oop info, oop value);
1399
1400 static void compute_offsets();
1401
1402 // Debugging
1403 friend class JavaClasses;
1404 };
1405
1406 // Interface to java.lang.AssertionStatusDirectives objects
1407
1408 class java_lang_AssertionStatusDirectives: AllStatic {
1409 private:
1410 enum {
1411 hc_classes_offset,
1412 hc_classEnabled_offset,
1413 hc_packages_offset,
1414 hc_packageEnabled_offset,
1415 hc_deflt_offset
1416 };
1417
1418 static int classes_offset;
1419 static int classEnabled_offset;
1420 static int packages_offset;
1421 static int packageEnabled_offset;
1422 static int deflt_offset;
1423
1424 public:
1425 // Setters
1426 static void set_classes(oop obj, oop val);
1427 static void set_classEnabled(oop obj, oop val);
1428 static void set_packages(oop obj, oop val);
1429 static void set_packageEnabled(oop obj, oop val);
1430 static void set_deflt(oop obj, bool val);
1431 // Debugging
1432 friend class JavaClasses;
1433 };
1434
1435
1436 class java_nio_Buffer: AllStatic {
1437 private:
1438 static int _limit_offset;
1439
1440 public:
1441 static int limit_offset();
1442 static void compute_offsets();
1443 };
1444
1445 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1446 private:
1447 static int _owner_offset;
1448 public:
1449 static void initialize(TRAPS);
1450 static oop get_owner_threadObj(oop obj);
1451 };
1452
1453 // Use to declare fields that need to be injected into Java classes
1454 // for the JVM to use. The name_index and signature_index are
1455 // declared in vmSymbols. The may_be_java flag is used to declare
1456 // fields that might already exist in Java but should be injected if
1457 // they don't. Otherwise the field is unconditionally injected and
1458 // the JVM uses the injected one. This is to ensure that name
1459 // collisions don't occur. In general may_be_java should be false
1460 // unless there's a good reason.
1461
1462 class InjectedField {
1463 public:
1464 const SystemDictionary::WKID klass_id;
1465 const vmSymbols::SID name_index;
1466 const vmSymbols::SID signature_index;
1467 const bool may_be_java;
1468
1469
1470 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1471 Symbol* name() const { return lookup_symbol(name_index); }
1472 Symbol* signature() const { return lookup_symbol(signature_index); }
1473
1474 int compute_offset();
1475
1476 // Find the Symbol for this index
1477 static Symbol* lookup_symbol(int symbol_index) {
1478 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1479 }
1480 };
1481
1482 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1483 klass##_##name##_enum,
1484
1485 #define ALL_INJECTED_FIELDS(macro) \
1486 CLASS_INJECTED_FIELDS(macro) \
1487 CLASSLOADER_INJECTED_FIELDS(macro) \
1488 MEMBERNAME_INJECTED_FIELDS(macro) \
1489 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1490 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1491 MODULE_INJECTED_FIELDS(macro)
1492
1493 // Interface to hard-coded offset checking
1494
1495 class JavaClasses : AllStatic {
1496 private:
1497
1498 static InjectedField _injected_fields[];
1499
1500 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1501 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1502 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1503
1504 public:
1505 enum InjectedFieldID {
1506 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1507 MAX_enum
1508 };
1509
1510 static int compute_injected_offset(InjectedFieldID id);
1511
1512 static void compute_hard_coded_offsets();
1513 static void compute_offsets();
1514 static void check_offsets() PRODUCT_RETURN;
1515
1516 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1517 };
1518
1519 #undef DECLARE_INJECTED_FIELD_ENUM
1520
1521 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP