1 /*
2 * Copyright (c) 1997, 2014, 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 offset_offset;
57 static int count_offset;
58 static int hash_offset;
59
60 static bool initialized;
61
62 static Handle basic_create(int length, TRAPS);
63
64 static void set_offset(oop string, int offset) {
65 assert(initialized, "Must be initialized");
66 if (offset_offset > 0) {
67 string->int_field_put(offset_offset, offset);
68 }
69 }
70 static void set_count( oop string, int count) {
71 assert(initialized, "Must be initialized");
72 if (count_offset > 0) {
73 string->int_field_put(count_offset, count);
74 }
75 }
76
77 public:
78 static void compute_offsets();
79
80 // Instance creation
81 static Handle create_from_unicode(jchar* unicode, int len, TRAPS);
82 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS);
83 static Handle create_from_str(const char* utf8_str, TRAPS);
84 static oop create_oop_from_str(const char* utf8_str, TRAPS);
85 static Handle create_from_symbol(Symbol* symbol, TRAPS);
86 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
87 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
88
89 static bool has_offset_field() {
90 assert(initialized, "Must be initialized");
91 return (offset_offset > 0);
92 }
93
94 static bool has_count_field() {
95 assert(initialized, "Must be initialized");
96 return (count_offset > 0);
97 }
98
99 static bool has_hash_field() {
100 assert(initialized, "Must be initialized");
101 return (hash_offset > 0);
102 }
103
104 static int value_offset_in_bytes() {
105 assert(initialized && (value_offset > 0), "Must be initialized");
106 return value_offset;
107 }
108 static int count_offset_in_bytes() {
109 assert(initialized && (count_offset > 0), "Must be initialized");
110 return count_offset;
111 }
112 static int offset_offset_in_bytes() {
113 assert(initialized && (offset_offset > 0), "Must be initialized");
114 return offset_offset;
115 }
116 static int hash_offset_in_bytes() {
117 assert(initialized && (hash_offset > 0), "Must be initialized");
118 return hash_offset;
119 }
120
121 static void set_value(oop string, typeArrayOop buffer) {
122 assert(initialized && (value_offset > 0), "Must be initialized");
123 string->obj_field_put(value_offset, (oop)buffer);
124 }
125 static void set_hash(oop string, unsigned int hash) {
126 assert(initialized && (hash_offset > 0), "Must be initialized");
127 string->int_field_put(hash_offset, hash);
128 }
129
130 // Accessors
131 static typeArrayOop value(oop java_string) {
132 assert(initialized && (value_offset > 0), "Must be initialized");
133 assert(is_instance(java_string), "must be java_string");
134 return (typeArrayOop) java_string->obj_field(value_offset);
135 }
136 static unsigned int hash(oop java_string) {
137 assert(initialized && (hash_offset > 0), "Must be initialized");
138 assert(is_instance(java_string), "must be java_string");
139 return java_string->int_field(hash_offset);
140 }
141 static int offset(oop java_string) {
142 assert(initialized, "Must be initialized");
143 assert(is_instance(java_string), "must be java_string");
144 if (offset_offset > 0) {
145 return java_string->int_field(offset_offset);
146 } else {
147 return 0;
148 }
149 }
150 static int length(oop java_string) {
151 assert(initialized, "Must be initialized");
152 assert(is_instance(java_string), "must be java_string");
153 if (count_offset > 0) {
154 return java_string->int_field(count_offset);
155 } else {
156 return ((typeArrayOop)java_string->obj_field(value_offset))->length();
157 }
158 }
159 static int utf8_length(oop java_string);
160
161 // String converters
162 static char* as_utf8_string(oop java_string);
163 static char* as_utf8_string(oop java_string, char* buf, int buflen);
164 static char* as_utf8_string(oop java_string, int start, int len);
165 static char* as_platform_dependent_str(Handle java_string, TRAPS);
166 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
167 // produce an ascii string with all other values quoted using \u####
168 static char* as_quoted_ascii(oop java_string);
169
170 // Compute the hash value for a java.lang.String object which would
171 // contain the characters passed in.
172 //
173 // As the hash value used by the String object itself, in
174 // String.hashCode(). This value is normally calculated in Java code
175 // in the String.hashCode method(), but is precomputed for String
176 // objects in the shared archive file.
177 // hash P(31) from Kernighan & Ritchie
178 //
179 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
180 template <typename T> static unsigned int hash_code(T* s, int len) {
181 unsigned int h = 0;
182 while (len-- > 0) {
183 h = 31*h + (unsigned int) *s;
184 s++;
185 }
186 return h;
187 }
188 static unsigned int hash_code(oop java_string);
189
190 // This is the string hash code used by the StringTable, which may be
191 // the same as String.hashCode or an alternate hash code.
192 static unsigned int hash_string(oop java_string);
193
194 static bool equals(oop java_string, jchar* chars, int len);
195 static bool equals(oop str1, oop str2);
196
197 // Conversion between '.' and '/' formats
198 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
199 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
200
201 // Conversion
202 static Symbol* as_symbol(Handle java_string, TRAPS);
203 static Symbol* as_symbol_or_null(oop java_string);
204
205 // Testers
206 static bool is_instance(oop obj) {
207 return obj != NULL && obj->klass() == SystemDictionary::String_klass();
208 }
209
210 // Debugging
211 static void print(oop java_string, outputStream* st);
212 friend class JavaClasses;
213 };
214
215
216 // Interface to java.lang.Class objects
217
218 #define CLASS_INJECTED_FIELDS(macro) \
219 macro(java_lang_Class, klass, intptr_signature, false) \
220 macro(java_lang_Class, array_klass, intptr_signature, false) \
221 macro(java_lang_Class, oop_size, int_signature, false) \
222 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
223 macro(java_lang_Class, protection_domain, object_signature, false) \
224 macro(java_lang_Class, init_lock, object_signature, false) \
225 macro(java_lang_Class, signers, object_signature, false)
226
227 class java_lang_Class : AllStatic {
228 friend class VMStructs;
229
230 private:
231 // The fake offsets are added by the class loader when java.lang.Class is loaded
232
233 static int _klass_offset;
234 static int _array_klass_offset;
235
236 static int _oop_size_offset;
237 static int _static_oop_field_count_offset;
238
239 static int _protection_domain_offset;
240 static int _init_lock_offset;
241 static int _signers_offset;
242
243 static bool offsets_computed;
244 static int classRedefinedCount_offset;
245 static GrowableArray<Klass*>* _fixup_mirror_list;
246
247 static void set_init_lock(oop java_class, oop init_lock);
248 static void set_protection_domain(oop java_class, oop protection_domain);
249 static void initialize_mirror_fields(KlassHandle k, Handle mirror, Handle protection_domain, TRAPS);
250 public:
251 static void compute_offsets();
252
253 // Instance creation
254 static void create_mirror(KlassHandle k, Handle protection_domain, TRAPS);
255 static void fixup_mirror(KlassHandle k, TRAPS);
256 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
257 // Conversion
258 static Klass* as_Klass(oop java_class);
259 static void set_klass(oop java_class, Klass* klass);
260 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
261 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) {
262 Klass* refk_oop = NULL;
263 BasicType result = as_BasicType(java_class, &refk_oop);
264 (*reference_klass) = KlassHandle(refk_oop);
265 return result;
266 }
267 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
268 static void print_signature(oop java_class, outputStream *st);
269 // Testing
270 static bool is_instance(oop obj) {
271 return obj != NULL && obj->klass() == SystemDictionary::Class_klass();
272 }
273 static bool is_primitive(oop java_class);
274 static BasicType primitive_type(oop java_class);
275 static oop primitive_mirror(BasicType t);
276 // JVM_NewArray support
277 static Klass* array_klass(oop java_class);
278 static void set_array_klass(oop java_class, Klass* klass);
279 // compiler support for class operations
280 static int klass_offset_in_bytes() { return _klass_offset; }
281 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
282 // Support for classRedefinedCount field
283 static int classRedefinedCount(oop the_class_mirror);
284 static void set_classRedefinedCount(oop the_class_mirror, int value);
285
286 // Support for embedded per-class oops
287 static oop protection_domain(oop java_class);
288 static oop init_lock(oop java_class);
289 static objArrayOop signers(oop java_class);
290 static void set_signers(oop java_class, objArrayOop signers);
291
292 static int oop_size(oop java_class);
293 static void set_oop_size(oop java_class, int size);
294 static int static_oop_field_count(oop java_class);
295 static void set_static_oop_field_count(oop java_class, int size);
296
297 static GrowableArray<Klass*>* fixup_mirror_list() {
298 return _fixup_mirror_list;
299 }
300 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
301 _fixup_mirror_list = v;
302 }
303 // Debugging
304 friend class JavaClasses;
305 friend class InstanceKlass; // verification code accesses offsets
306 friend class ClassFileParser; // access to number_of_fake_fields
307 };
308
309 // Interface to java.lang.Thread objects
310
311 class java_lang_Thread : AllStatic {
312 private:
313 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
314 // so we compute the offsets at startup rather than hard-wiring them.
315 static int _name_offset;
316 static int _group_offset;
317 static int _contextClassLoader_offset;
318 static int _inheritedAccessControlContext_offset;
319 static int _priority_offset;
320 static int _eetop_offset;
321 static int _daemon_offset;
322 static int _stillborn_offset;
323 static int _stackSize_offset;
324 static int _tid_offset;
325 static int _thread_status_offset;
326 static int _park_blocker_offset;
327 static int _park_event_offset ;
328
329 static void compute_offsets();
330
331 public:
332 // Instance creation
333 static oop create();
334 // Returns the JavaThread associated with the thread obj
335 static JavaThread* thread(oop java_thread);
336 // Set JavaThread for instance
337 static void set_thread(oop java_thread, JavaThread* thread);
338 // Name
339 static typeArrayOop name(oop java_thread);
340 static void set_name(oop java_thread, typeArrayOop name);
341 // Priority
342 static ThreadPriority priority(oop java_thread);
343 static void set_priority(oop java_thread, ThreadPriority priority);
344 // Thread group
345 static oop threadGroup(oop java_thread);
346 // Stillborn
347 static bool is_stillborn(oop java_thread);
348 static void set_stillborn(oop java_thread);
349 // Alive (NOTE: this is not really a field, but provides the correct
350 // definition without doing a Java call)
351 static bool is_alive(oop java_thread);
352 // Daemon
353 static bool is_daemon(oop java_thread);
354 static void set_daemon(oop java_thread);
355 // Context ClassLoader
356 static oop context_class_loader(oop java_thread);
357 // Control context
358 static oop inherited_access_control_context(oop java_thread);
359 // Stack size hint
360 static jlong stackSize(oop java_thread);
361 // Thread ID
362 static jlong thread_id(oop java_thread);
363
364 // Blocker object responsible for thread parking
365 static oop park_blocker(oop java_thread);
366
367 // Pointer to type-stable park handler, encoded as jlong.
368 // Should be set when apparently null
369 // For details, see unsafe.cpp Unsafe_Unpark
370 static jlong park_event(oop java_thread);
371 static bool set_park_event(oop java_thread, jlong ptr);
372
373 // Java Thread Status for JVMTI and M&M use.
374 // This thread status info is saved in threadStatus field of
375 // java.lang.Thread java class.
376 enum ThreadStatus {
377 NEW = 0,
378 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
379 JVMTI_THREAD_STATE_RUNNABLE,
380 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
381 JVMTI_THREAD_STATE_WAITING +
382 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
383 JVMTI_THREAD_STATE_SLEEPING,
384 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
385 JVMTI_THREAD_STATE_WAITING +
386 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
387 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
388 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
389 JVMTI_THREAD_STATE_WAITING +
390 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
391 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
392 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
393 JVMTI_THREAD_STATE_WAITING +
394 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
395 JVMTI_THREAD_STATE_PARKED,
396 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
397 JVMTI_THREAD_STATE_WAITING +
398 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
399 JVMTI_THREAD_STATE_PARKED,
400 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
401 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
402 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
403 };
404 // Write thread status info to threadStatus field of java.lang.Thread.
405 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
406 // Read thread status info from threadStatus field of java.lang.Thread.
407 static ThreadStatus get_thread_status(oop java_thread_oop);
408
409 static const char* thread_status_name(oop java_thread_oop);
410
411 // Debugging
412 friend class JavaClasses;
413 };
414
415 // Interface to java.lang.ThreadGroup objects
416
417 class java_lang_ThreadGroup : AllStatic {
418 private:
419 static int _parent_offset;
420 static int _name_offset;
421 static int _threads_offset;
422 static int _groups_offset;
423 static int _maxPriority_offset;
424 static int _destroyed_offset;
425 static int _daemon_offset;
426 static int _vmAllowSuspension_offset;
427 static int _nthreads_offset;
428 static int _ngroups_offset;
429
430 static void compute_offsets();
431
432 public:
433 // parent ThreadGroup
434 static oop parent(oop java_thread_group);
435 // name
436 static typeArrayOop name(oop java_thread_group);
437 // ("name as oop" accessor is not necessary)
438 // Number of threads in group
439 static int nthreads(oop java_thread_group);
440 // threads
441 static objArrayOop threads(oop java_thread_group);
442 // Number of threads in group
443 static int ngroups(oop java_thread_group);
444 // groups
445 static objArrayOop groups(oop java_thread_group);
446 // maxPriority in group
447 static ThreadPriority maxPriority(oop java_thread_group);
448 // Destroyed
449 static bool is_destroyed(oop java_thread_group);
450 // Daemon
451 static bool is_daemon(oop java_thread_group);
452 // vmAllowSuspension
453 static bool is_vmAllowSuspension(oop java_thread_group);
454 // Debugging
455 friend class JavaClasses;
456 };
457
458
459
460 // Interface to java.lang.Throwable objects
461
462 class java_lang_Throwable: AllStatic {
463 friend class BacktraceBuilder;
464
465 private:
466 // Offsets
467 enum {
468 hc_backtrace_offset = 0,
469 hc_detailMessage_offset = 1,
470 hc_cause_offset = 2, // New since 1.4
471 hc_stackTrace_offset = 3 // New since 1.4
472 };
473 enum {
474 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7
475 };
476 // Trace constants
477 enum {
478 trace_methods_offset = 0,
479 trace_bcis_offset = 1,
480 trace_mirrors_offset = 2,
481 trace_next_offset = 3,
482 trace_size = 4,
483 trace_chunk_size = 32
484 };
485
486 static int backtrace_offset;
487 static int detailMessage_offset;
488 static int cause_offset;
489 static int stackTrace_offset;
490 static int static_unassigned_stacktrace_offset;
491
492 // Printing
493 static char* print_stack_element_to_buffer(Handle mirror, int method, int version, int bci);
494 // StackTrace (programmatic access, new since 1.4)
495 static void clear_stacktrace(oop throwable);
496 // No stack trace available
497 static const char* no_stack_trace_message();
498 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
499 static void set_stacktrace(oop throwable, oop st_element_array);
500 static oop unassigned_stacktrace();
501
502 public:
503 // Backtrace
504 static oop backtrace(oop throwable);
505 static void set_backtrace(oop throwable, oop value);
506 // Needed by JVMTI to filter out this internal field.
507 static int get_backtrace_offset() { return backtrace_offset;}
508 static int get_detailMessage_offset() { return detailMessage_offset;}
509 // Message
510 static oop message(oop throwable);
511 static oop message(Handle throwable);
512 static void set_message(oop throwable, oop value);
513 static void print_stack_element(outputStream *st, Handle mirror, int method,
514 int version, int bci);
515 static void print_stack_element(outputStream *st, methodHandle method, int bci);
516 static void print_stack_usage(Handle stream);
517
518 // Allocate space for backtrace (created but stack trace not filled in)
519 static void allocate_backtrace(Handle throwable, TRAPS);
520 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
521 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
522 // Fill in current stack trace, can cause GC
523 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS);
524 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle());
525 // Programmatic access to stack trace
526 static oop get_stack_trace_element(oop throwable, int index, TRAPS);
527 static int get_stack_trace_depth(oop throwable, TRAPS);
528 // Printing
529 static void print(oop throwable, outputStream* st);
530 static void print(Handle throwable, outputStream* st);
531 static void print_stack_trace(oop throwable, outputStream* st);
532 // Debugging
533 friend class JavaClasses;
534 };
535
536
537 // Interface to java.lang.reflect.AccessibleObject objects
538
539 class java_lang_reflect_AccessibleObject: AllStatic {
540 private:
541 // Note that to reduce dependencies on the JDK we compute these
542 // offsets at run-time.
543 static int override_offset;
544
545 static void compute_offsets();
546
547 public:
548 // Accessors
549 static jboolean override(oop reflect);
550 static void set_override(oop reflect, jboolean value);
551
552 // Debugging
553 friend class JavaClasses;
554 };
555
556
557 // Interface to java.lang.reflect.Method objects
558
559 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
560 private:
561 // Note that to reduce dependencies on the JDK we compute these
562 // offsets at run-time.
563 static int clazz_offset;
564 static int name_offset;
565 static int returnType_offset;
566 static int parameterTypes_offset;
567 static int exceptionTypes_offset;
568 static int slot_offset;
569 static int modifiers_offset;
570 static int signature_offset;
571 static int annotations_offset;
572 static int parameter_annotations_offset;
573 static int annotation_default_offset;
574 static int type_annotations_offset;
575
576 static void compute_offsets();
577
578 public:
579 // Allocation
580 static Handle create(TRAPS);
581
582 // Accessors
583 static oop clazz(oop reflect);
584 static void set_clazz(oop reflect, oop value);
585
586 static oop name(oop method);
587 static void set_name(oop method, oop value);
588
589 static oop return_type(oop method);
590 static void set_return_type(oop method, oop value);
591
592 static oop parameter_types(oop method);
593 static void set_parameter_types(oop method, oop value);
594
595 static oop exception_types(oop method);
596 static void set_exception_types(oop method, oop value);
597
598 static int slot(oop reflect);
599 static void set_slot(oop reflect, int value);
600
601 static int modifiers(oop method);
602 static void set_modifiers(oop method, int value);
603
604 static bool has_signature_field();
605 static oop signature(oop method);
606 static void set_signature(oop method, oop value);
607
608 static bool has_annotations_field();
609 static oop annotations(oop method);
610 static void set_annotations(oop method, oop value);
611
612 static bool has_parameter_annotations_field();
613 static oop parameter_annotations(oop method);
614 static void set_parameter_annotations(oop method, oop value);
615
616 static bool has_annotation_default_field();
617 static oop annotation_default(oop method);
618 static void set_annotation_default(oop method, oop value);
619
620 static bool has_type_annotations_field();
621 static oop type_annotations(oop method);
622 static void set_type_annotations(oop method, oop value);
623
624 // Debugging
625 friend class JavaClasses;
626 };
627
628
629 // Interface to java.lang.reflect.Constructor objects
630
631 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
632 private:
633 // Note that to reduce dependencies on the JDK we compute these
634 // offsets at run-time.
635 static int clazz_offset;
636 static int parameterTypes_offset;
637 static int exceptionTypes_offset;
638 static int slot_offset;
639 static int modifiers_offset;
640 static int signature_offset;
641 static int annotations_offset;
642 static int parameter_annotations_offset;
643 static int type_annotations_offset;
644
645 static void compute_offsets();
646
647 public:
648 // Allocation
649 static Handle create(TRAPS);
650
651 // Accessors
652 static oop clazz(oop reflect);
653 static void set_clazz(oop reflect, oop value);
654
655 static oop parameter_types(oop constructor);
656 static void set_parameter_types(oop constructor, oop value);
657
658 static oop exception_types(oop constructor);
659 static void set_exception_types(oop constructor, oop value);
660
661 static int slot(oop reflect);
662 static void set_slot(oop reflect, int value);
663
664 static int modifiers(oop constructor);
665 static void set_modifiers(oop constructor, int value);
666
667 static bool has_signature_field();
668 static oop signature(oop constructor);
669 static void set_signature(oop constructor, oop value);
670
671 static bool has_annotations_field();
672 static oop annotations(oop constructor);
673 static void set_annotations(oop constructor, oop value);
674
675 static bool has_parameter_annotations_field();
676 static oop parameter_annotations(oop method);
677 static void set_parameter_annotations(oop method, oop value);
678
679 static bool has_type_annotations_field();
680 static oop type_annotations(oop constructor);
681 static void set_type_annotations(oop constructor, oop value);
682
683 // Debugging
684 friend class JavaClasses;
685 };
686
687
688 // Interface to java.lang.reflect.Field objects
689
690 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
691 private:
692 // Note that to reduce dependencies on the JDK we compute these
693 // offsets at run-time.
694 static int clazz_offset;
695 static int name_offset;
696 static int type_offset;
697 static int slot_offset;
698 static int modifiers_offset;
699 static int signature_offset;
700 static int annotations_offset;
701 static int type_annotations_offset;
702
703 static void compute_offsets();
704
705 public:
706 // Allocation
707 static Handle create(TRAPS);
708
709 // Accessors
710 static oop clazz(oop reflect);
711 static void set_clazz(oop reflect, oop value);
712
713 static oop name(oop field);
714 static void set_name(oop field, oop value);
715
716 static oop type(oop field);
717 static void set_type(oop field, oop value);
718
719 static int slot(oop reflect);
720 static void set_slot(oop reflect, int value);
721
722 static int modifiers(oop field);
723 static void set_modifiers(oop field, int value);
724
725 static bool has_signature_field();
726 static oop signature(oop constructor);
727 static void set_signature(oop constructor, oop value);
728
729 static bool has_annotations_field();
730 static oop annotations(oop constructor);
731 static void set_annotations(oop constructor, oop value);
732
733 static bool has_parameter_annotations_field();
734 static oop parameter_annotations(oop method);
735 static void set_parameter_annotations(oop method, oop value);
736
737 static bool has_annotation_default_field();
738 static oop annotation_default(oop method);
739 static void set_annotation_default(oop method, oop value);
740
741 static bool has_type_annotations_field();
742 static oop type_annotations(oop field);
743 static void set_type_annotations(oop field, oop value);
744
745 // Debugging
746 friend class JavaClasses;
747 };
748
749 class java_lang_reflect_Parameter {
750 private:
751 // Note that to reduce dependencies on the JDK we compute these
752 // offsets at run-time.
753 static int name_offset;
754 static int modifiers_offset;
755 static int index_offset;
756 static int executable_offset;
757
758 static void compute_offsets();
759
760 public:
761 // Allocation
762 static Handle create(TRAPS);
763
764 // Accessors
765 static oop name(oop field);
766 static void set_name(oop field, oop value);
767
768 static int index(oop reflect);
769 static void set_index(oop reflect, int value);
770
771 static int modifiers(oop reflect);
772 static void set_modifiers(oop reflect, int value);
773
774 static oop executable(oop constructor);
775 static void set_executable(oop constructor, oop value);
776
777 friend class JavaClasses;
778 };
779
780 // Interface to sun.reflect.ConstantPool objects
781 class sun_reflect_ConstantPool {
782 private:
783 // Note that to reduce dependencies on the JDK we compute these
784 // offsets at run-time.
785 static int _oop_offset;
786
787 static void compute_offsets();
788
789 public:
790 // Allocation
791 static Handle create(TRAPS);
792
793 // Accessors
794 static void set_cp(oop reflect, ConstantPool* value);
795 static int oop_offset() {
796 return _oop_offset;
797 }
798
799 static ConstantPool* get_cp(oop reflect);
800
801 // Debugging
802 friend class JavaClasses;
803 };
804
805 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects
806 class sun_reflect_UnsafeStaticFieldAccessorImpl {
807 private:
808 static int _base_offset;
809 static void compute_offsets();
810
811 public:
812 static int base_offset() {
813 return _base_offset;
814 }
815
816 // Debugging
817 friend class JavaClasses;
818 };
819
820 // Interface to java.lang primitive type boxing objects:
821 // - java.lang.Boolean
822 // - java.lang.Character
823 // - java.lang.Float
824 // - java.lang.Double
825 // - java.lang.Byte
826 // - java.lang.Short
827 // - java.lang.Integer
828 // - java.lang.Long
829
830 // This could be separated out into 8 individual classes.
831
832 class java_lang_boxing_object: AllStatic {
833 private:
834 enum {
835 hc_value_offset = 0
836 };
837 static int value_offset;
838 static int long_value_offset;
839
840 static oop initialize_and_allocate(BasicType type, TRAPS);
841 public:
842 // Allocation. Returns a boxed value, or NULL for invalid type.
843 static oop create(BasicType type, jvalue* value, TRAPS);
844 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
845 static BasicType get_value(oop box, jvalue* value);
846 static BasicType set_value(oop box, jvalue* value);
847 static BasicType basic_type(oop box);
848 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
849 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
850 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
851 static void print(BasicType type, jvalue* value, outputStream* st);
852
853 static int value_offset_in_bytes(BasicType type) {
854 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
855 value_offset;
856 }
857
858 // Debugging
859 friend class JavaClasses;
860 };
861
862
863
864 // Interface to java.lang.ref.Reference objects
865
866 class java_lang_ref_Reference: AllStatic {
867 public:
868 enum {
869 hc_referent_offset = 0,
870 hc_queue_offset = 1,
871 hc_next_offset = 2,
872 hc_discovered_offset = 3 // Is not last, see SoftRefs.
873 };
874 enum {
875 hc_static_lock_offset = 0,
876 hc_static_pending_offset = 1
877 };
878
879 static int referent_offset;
880 static int queue_offset;
881 static int next_offset;
882 static int discovered_offset;
883 static int static_lock_offset;
884 static int static_pending_offset;
885 static int number_of_fake_oop_fields;
886
887 // Accessors
888 static oop referent(oop ref) {
889 return ref->obj_field(referent_offset);
890 }
891 static void set_referent(oop ref, oop value) {
892 ref->obj_field_put(referent_offset, value);
893 }
894 static void set_referent_raw(oop ref, oop value) {
895 ref->obj_field_put_raw(referent_offset, value);
896 }
897 static HeapWord* referent_addr(oop ref) {
898 return ref->obj_field_addr<HeapWord>(referent_offset);
899 }
900 static oop next(oop ref) {
901 return ref->obj_field(next_offset);
902 }
903 static void set_next(oop ref, oop value) {
904 ref->obj_field_put(next_offset, value);
905 }
906 static void set_next_raw(oop ref, oop value) {
907 ref->obj_field_put_raw(next_offset, value);
908 }
909 static HeapWord* next_addr(oop ref) {
910 return ref->obj_field_addr<HeapWord>(next_offset);
911 }
912 static oop discovered(oop ref) {
913 return ref->obj_field(discovered_offset);
914 }
915 static void set_discovered(oop ref, oop value) {
916 ref->obj_field_put(discovered_offset, value);
917 }
918 static void set_discovered_raw(oop ref, oop value) {
919 ref->obj_field_put_raw(discovered_offset, value);
920 }
921 static HeapWord* discovered_addr(oop ref) {
922 return ref->obj_field_addr<HeapWord>(discovered_offset);
923 }
924 // Accessors for statics
925 static oop pending_list_lock();
926 static oop pending_list();
927
928 static HeapWord* pending_list_lock_addr();
929 static HeapWord* pending_list_addr();
930 };
931
932
933 // Interface to java.lang.ref.SoftReference objects
934
935 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
936 public:
937 enum {
938 // The timestamp is a long field and may need to be adjusted for alignment.
939 hc_timestamp_offset = hc_discovered_offset + 1
940 };
941 enum {
942 hc_static_clock_offset = 0
943 };
944
945 static int timestamp_offset;
946 static int static_clock_offset;
947
948 // Accessors
949 static jlong timestamp(oop ref);
950
951 // Accessors for statics
952 static jlong clock();
953 static void set_clock(jlong value);
954 };
955
956
957 // Interface to java.lang.invoke.MethodHandle objects
958
959 class MethodHandleEntry;
960
961 class java_lang_invoke_MethodHandle: AllStatic {
962 friend class JavaClasses;
963
964 private:
965 static int _type_offset; // the MethodType of this MH
966 static int _form_offset; // the LambdaForm of this MH
967
968 static void compute_offsets();
969
970 public:
971 // Accessors
972 static oop type(oop mh);
973 static void set_type(oop mh, oop mtype);
974
975 static oop form(oop mh);
976 static void set_form(oop mh, oop lform);
977
978 // Testers
979 static bool is_subclass(Klass* klass) {
980 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
981 }
982 static bool is_instance(oop obj) {
983 return obj != NULL && is_subclass(obj->klass());
984 }
985
986 // Accessors for code generation:
987 static int type_offset_in_bytes() { return _type_offset; }
988 static int form_offset_in_bytes() { return _form_offset; }
989 };
990
991 // Interface to java.lang.invoke.DirectMethodHandle objects
992
993 class java_lang_invoke_DirectMethodHandle: AllStatic {
994 friend class JavaClasses;
995
996 private:
997 static int _member_offset; // the MemberName of this DMH
998
999 static void compute_offsets();
1000
1001 public:
1002 // Accessors
1003 static oop member(oop mh);
1004
1005 // Testers
1006 static bool is_subclass(Klass* klass) {
1007 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1008 }
1009 static bool is_instance(oop obj) {
1010 return obj != NULL && is_subclass(obj->klass());
1011 }
1012
1013 // Accessors for code generation:
1014 static int member_offset_in_bytes() { return _member_offset; }
1015 };
1016
1017 // Interface to java.lang.invoke.LambdaForm objects
1018 // (These are a private interface for managing adapter code generation.)
1019
1020 class java_lang_invoke_LambdaForm: AllStatic {
1021 friend class JavaClasses;
1022
1023 private:
1024 static int _vmentry_offset; // type is MemberName
1025
1026 static void compute_offsets();
1027
1028 public:
1029 // Accessors
1030 static oop vmentry(oop lform);
1031 static void set_vmentry(oop lform, oop invoker);
1032
1033 // Testers
1034 static bool is_subclass(Klass* klass) {
1035 return SystemDictionary::LambdaForm_klass() != NULL &&
1036 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1037 }
1038 static bool is_instance(oop obj) {
1039 return obj != NULL && is_subclass(obj->klass());
1040 }
1041
1042 // Accessors for code generation:
1043 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1044 };
1045
1046
1047 // Interface to java.lang.invoke.MemberName objects
1048 // (These are a private interface for Java code to query the class hierarchy.)
1049
1050 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1051 macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \
1052 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) \
1053 macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false)
1054
1055 class java_lang_invoke_MemberName: AllStatic {
1056 friend class JavaClasses;
1057
1058 private:
1059 // From java.lang.invoke.MemberName:
1060 // private Class<?> clazz; // class in which the method is defined
1061 // private String name; // may be null if not yet materialized
1062 // private Object type; // may be null if not yet materialized
1063 // private int flags; // modifier bits; see reflect.Modifier
1064 // private intptr vmtarget; // VM-specific target value
1065 // private intptr_t vmindex; // member index within class or interface
1066 static int _clazz_offset;
1067 static int _name_offset;
1068 static int _type_offset;
1069 static int _flags_offset;
1070 static int _vmtarget_offset;
1071 static int _vmloader_offset;
1072 static int _vmindex_offset;
1073
1074 static void compute_offsets();
1075
1076 public:
1077 // Accessors
1078 static oop clazz(oop mname);
1079 static void set_clazz(oop mname, oop clazz);
1080
1081 static oop type(oop mname);
1082 static void set_type(oop mname, oop type);
1083
1084 static oop name(oop mname);
1085 static void set_name(oop mname, oop name);
1086
1087 static int flags(oop mname);
1088 static void set_flags(oop mname, int flags);
1089
1090 static Metadata* vmtarget(oop mname);
1091 static void set_vmtarget(oop mname, Metadata* target);
1092 #if INCLUDE_JVMTI
1093 static void adjust_vmtarget(oop mname, Metadata* target);
1094 #endif // INCLUDE_JVMTI
1095
1096 static intptr_t vmindex(oop mname);
1097 static void set_vmindex(oop mname, intptr_t index);
1098
1099 // Testers
1100 static bool is_subclass(Klass* klass) {
1101 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1102 }
1103 static bool is_instance(oop obj) {
1104 return obj != NULL && is_subclass(obj->klass());
1105 }
1106
1107 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1108 enum {
1109 MN_IS_METHOD = 0x00010000, // method (not constructor)
1110 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1111 MN_IS_FIELD = 0x00040000, // field
1112 MN_IS_TYPE = 0x00080000, // nested type
1113 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1114 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1115 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1116 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1117 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1118 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1119 };
1120
1121 // Accessors for code generation:
1122 static int clazz_offset_in_bytes() { return _clazz_offset; }
1123 static int type_offset_in_bytes() { return _type_offset; }
1124 static int name_offset_in_bytes() { return _name_offset; }
1125 static int flags_offset_in_bytes() { return _flags_offset; }
1126 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1127 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1128 };
1129
1130
1131 // Interface to java.lang.invoke.MethodType objects
1132
1133 class java_lang_invoke_MethodType: AllStatic {
1134 friend class JavaClasses;
1135
1136 private:
1137 static int _rtype_offset;
1138 static int _ptypes_offset;
1139
1140 static void compute_offsets();
1141
1142 public:
1143 // Accessors
1144 static oop rtype(oop mt);
1145 static objArrayOop ptypes(oop mt);
1146
1147 static oop ptype(oop mt, int index);
1148 static int ptype_count(oop mt);
1149
1150 static int ptype_slot_count(oop mt); // extra counts for long/double
1151 static int rtype_slot_count(oop mt); // extra counts for long/double
1152
1153 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1154 static void print_signature(oop mt, outputStream* st);
1155
1156 static bool is_instance(oop obj) {
1157 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass();
1158 }
1159
1160 static bool equals(oop mt1, oop mt2);
1161
1162 // Accessors for code generation:
1163 static int rtype_offset_in_bytes() { return _rtype_offset; }
1164 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1165 };
1166
1167
1168 // Interface to java.lang.invoke.CallSite objects
1169
1170 class java_lang_invoke_CallSite: AllStatic {
1171 friend class JavaClasses;
1172
1173 private:
1174 static int _target_offset;
1175
1176 static void compute_offsets();
1177
1178 public:
1179 // Accessors
1180 static oop target( oop site) { return site->obj_field( _target_offset); }
1181 static void set_target( oop site, oop target) { site->obj_field_put( _target_offset, target); }
1182
1183 static volatile oop target_volatile(oop site) { return site->obj_field_volatile( _target_offset); }
1184 static void set_target_volatile(oop site, oop target) { site->obj_field_put_volatile(_target_offset, target); }
1185
1186 // Testers
1187 static bool is_subclass(Klass* klass) {
1188 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1189 }
1190 static bool is_instance(oop obj) {
1191 return obj != NULL && is_subclass(obj->klass());
1192 }
1193
1194 // Accessors for code generation:
1195 static int target_offset_in_bytes() { return _target_offset; }
1196 };
1197
1198
1199 // Interface to java.security.AccessControlContext objects
1200
1201 class java_security_AccessControlContext: AllStatic {
1202 private:
1203 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1204 // so we compute the offsets at startup rather than hard-wiring them.
1205 static int _context_offset;
1206 static int _privilegedContext_offset;
1207 static int _isPrivileged_offset;
1208 static int _isAuthorized_offset;
1209
1210 static void compute_offsets();
1211 public:
1212 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1213
1214 static bool is_authorized(Handle context);
1215
1216 // Debugging/initialization
1217 friend class JavaClasses;
1218 };
1219
1220
1221 // Interface to java.lang.ClassLoader objects
1222
1223 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1224 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1225
1226 class java_lang_ClassLoader : AllStatic {
1227 private:
1228 // The fake offsets are added by the class loader when java.lang.Class is loaded
1229 enum {
1230 hc_parent_offset = 0
1231 };
1232 static int _loader_data_offset;
1233 static bool offsets_computed;
1234 static int parent_offset;
1235 static int parallelCapable_offset;
1236
1237 public:
1238 static void compute_offsets();
1239
1240 static ClassLoaderData** loader_data_addr(oop loader);
1241 static ClassLoaderData* loader_data(oop loader);
1242
1243 static oop parent(oop loader);
1244 static bool isAncestor(oop loader, oop cl);
1245
1246 // Support for parallelCapable field
1247 static bool parallelCapable(oop the_class_mirror);
1248
1249 static bool is_trusted_loader(oop loader);
1250
1251 // Fix for 4474172
1252 static oop non_reflection_class_loader(oop loader);
1253
1254 // Testers
1255 static bool is_subclass(Klass* klass) {
1256 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1257 }
1258 static bool is_instance(oop obj) {
1259 return obj != NULL && is_subclass(obj->klass());
1260 }
1261
1262 // Debugging
1263 friend class JavaClasses;
1264 friend class ClassFileParser; // access to number_of_fake_fields
1265 };
1266
1267
1268 // Interface to java.lang.System objects
1269
1270 class java_lang_System : AllStatic {
1271 private:
1272 enum {
1273 hc_static_in_offset = 0,
1274 hc_static_out_offset = 1,
1275 hc_static_err_offset = 2,
1276 hc_static_security_offset = 3
1277 };
1278
1279 static int static_in_offset;
1280 static int static_out_offset;
1281 static int static_err_offset;
1282 static int static_security_offset;
1283
1284 public:
1285 static int in_offset_in_bytes();
1286 static int out_offset_in_bytes();
1287 static int err_offset_in_bytes();
1288
1289 static bool has_security_manager();
1290
1291 // Debugging
1292 friend class JavaClasses;
1293 };
1294
1295
1296 // Interface to java.lang.StackTraceElement objects
1297
1298 class java_lang_StackTraceElement: AllStatic {
1299 private:
1300 enum {
1301 hc_declaringClass_offset = 0,
1302 hc_methodName_offset = 1,
1303 hc_fileName_offset = 2,
1304 hc_lineNumber_offset = 3
1305 };
1306
1307 static int declaringClass_offset;
1308 static int methodName_offset;
1309 static int fileName_offset;
1310 static int lineNumber_offset;
1311
1312 public:
1313 // Setters
1314 static void set_declaringClass(oop element, oop value);
1315 static void set_methodName(oop element, oop value);
1316 static void set_fileName(oop element, oop value);
1317 static void set_lineNumber(oop element, int value);
1318
1319 // Create an instance of StackTraceElement
1320 static oop create(Handle mirror, int method, int version, int bci, TRAPS);
1321 static oop create(methodHandle method, int bci, TRAPS);
1322
1323 // Debugging
1324 friend class JavaClasses;
1325 };
1326
1327
1328 // Interface to java.lang.AssertionStatusDirectives objects
1329
1330 class java_lang_AssertionStatusDirectives: AllStatic {
1331 private:
1332 enum {
1333 hc_classes_offset,
1334 hc_classEnabled_offset,
1335 hc_packages_offset,
1336 hc_packageEnabled_offset,
1337 hc_deflt_offset
1338 };
1339
1340 static int classes_offset;
1341 static int classEnabled_offset;
1342 static int packages_offset;
1343 static int packageEnabled_offset;
1344 static int deflt_offset;
1345
1346 public:
1347 // Setters
1348 static void set_classes(oop obj, oop val);
1349 static void set_classEnabled(oop obj, oop val);
1350 static void set_packages(oop obj, oop val);
1351 static void set_packageEnabled(oop obj, oop val);
1352 static void set_deflt(oop obj, bool val);
1353 // Debugging
1354 friend class JavaClasses;
1355 };
1356
1357
1358 class java_nio_Buffer: AllStatic {
1359 private:
1360 static int _limit_offset;
1361
1362 public:
1363 static int limit_offset();
1364 static void compute_offsets();
1365 };
1366
1367 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1368 private:
1369 static int _owner_offset;
1370 public:
1371 static void initialize(TRAPS);
1372 static oop get_owner_threadObj(oop obj);
1373 };
1374
1375 // Use to declare fields that need to be injected into Java classes
1376 // for the JVM to use. The name_index and signature_index are
1377 // declared in vmSymbols. The may_be_java flag is used to declare
1378 // fields that might already exist in Java but should be injected if
1379 // they don't. Otherwise the field is unconditionally injected and
1380 // the JVM uses the injected one. This is to ensure that name
1381 // collisions don't occur. In general may_be_java should be false
1382 // unless there's a good reason.
1383
1384 class InjectedField {
1385 public:
1386 const SystemDictionary::WKID klass_id;
1387 const vmSymbols::SID name_index;
1388 const vmSymbols::SID signature_index;
1389 const bool may_be_java;
1390
1391
1392 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1393 Symbol* name() const { return lookup_symbol(name_index); }
1394 Symbol* signature() const { return lookup_symbol(signature_index); }
1395
1396 int compute_offset();
1397
1398 // Find the Symbol for this index
1399 static Symbol* lookup_symbol(int symbol_index) {
1400 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1401 }
1402 };
1403
1404 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1405 klass##_##name##_enum,
1406
1407 #define ALL_INJECTED_FIELDS(macro) \
1408 CLASS_INJECTED_FIELDS(macro) \
1409 CLASSLOADER_INJECTED_FIELDS(macro) \
1410 MEMBERNAME_INJECTED_FIELDS(macro)
1411
1412 // Interface to hard-coded offset checking
1413
1414 class JavaClasses : AllStatic {
1415 private:
1416
1417 static InjectedField _injected_fields[];
1418
1419 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1420 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1421 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1422
1423 public:
1424 enum InjectedFieldID {
1425 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1426 MAX_enum
1427 };
1428
1429 static int compute_injected_offset(InjectedFieldID id);
1430
1431 static void compute_hard_coded_offsets();
1432 static void compute_offsets();
1433 static void check_offsets() PRODUCT_RETURN;
1434
1435 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1436 };
1437
1438 #undef DECLARE_INJECTED_FIELD_ENUM
1439
1440 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP