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