1 /*
2 * Copyright (c) 1997, 2015, 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_utf8_string(oop java_string, int start, int len, char* buf, int buflen);
166 static char* as_platform_dependent_str(Handle java_string, TRAPS);
167 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
168 // produce an ascii string with all other values quoted using \u####
169 static char* as_quoted_ascii(oop java_string);
170
171 // Compute the hash value for a java.lang.String object which would
172 // contain the characters passed in.
173 //
174 // As the hash value used by the String object itself, in
175 // String.hashCode(). This value is normally calculated in Java code
176 // in the String.hashCode method(), but is precomputed for String
177 // objects in the shared archive file.
178 // hash P(31) from Kernighan & Ritchie
179 //
180 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
181 template <typename T> static unsigned int hash_code(T* s, int len) {
182 unsigned int h = 0;
183 while (len-- > 0) {
184 h = 31*h + (unsigned int) *s;
185 s++;
186 }
187 return h;
188 }
189 static unsigned int hash_code(oop java_string);
190
191 // This is the string hash code used by the StringTable, which may be
192 // the same as String.hashCode or an alternate hash code.
193 static unsigned int hash_string(oop java_string);
194
195 static bool equals(oop java_string, jchar* chars, int len);
196 static bool equals(oop str1, oop str2);
197
198 // Conversion between '.' and '/' formats
199 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
200 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
201
202 // Conversion
203 static Symbol* as_symbol(Handle java_string, TRAPS);
204 static Symbol* as_symbol_or_null(oop java_string);
205
206 // Testers
207 static bool is_instance(oop obj);
208 static bool is_instance_inlined(oop obj);
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, signers, object_signature, false)
225
226 class java_lang_Class : AllStatic {
227 friend class VMStructs;
228
229 private:
230 // The fake offsets are added by the class loader when java.lang.Class is loaded
231
232 static int _klass_offset;
233 static int _array_klass_offset;
234
235 static int _oop_size_offset;
236 static int _static_oop_field_count_offset;
237
238 static int _protection_domain_offset;
239 static int _init_lock_offset;
240 static int _signers_offset;
241 static int _class_loader_offset;
242 static int _component_mirror_offset;
243
244 static bool offsets_computed;
245 static int classRedefinedCount_offset;
246
247 static GrowableArray<Klass*>* _fixup_mirror_list;
248
249 static void set_init_lock(oop java_class, oop init_lock);
250 static void set_protection_domain(oop java_class, oop protection_domain);
251 static void set_class_loader(oop java_class, oop class_loader);
252 static void set_component_mirror(oop java_class, oop comp_mirror);
253 static void initialize_mirror_fields(KlassHandle k, Handle mirror, Handle protection_domain, TRAPS);
254 public:
255 static void compute_offsets();
256
257 // Instance creation
258 static void create_mirror(KlassHandle k, Handle class_loader,
259 Handle protection_domain, TRAPS);
260 static void fixup_mirror(KlassHandle k, TRAPS);
261 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
262 // Conversion
263 static Klass* as_Klass(oop java_class);
264 static void set_klass(oop java_class, Klass* klass);
265 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
266 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) {
267 Klass* refk_oop = NULL;
268 BasicType result = as_BasicType(java_class, &refk_oop);
269 (*reference_klass) = KlassHandle(refk_oop);
270 return result;
271 }
272 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
273 static void print_signature(oop java_class, outputStream *st);
274 // Testing
275 static bool is_instance(oop obj);
276
277 static bool is_primitive(oop java_class);
278 static BasicType primitive_type(oop java_class);
279 static oop primitive_mirror(BasicType t);
280 // JVM_NewArray support
281 static Klass* array_klass(oop java_class);
282 static void set_array_klass(oop java_class, Klass* klass);
283 // compiler support for class operations
284 static int klass_offset_in_bytes() { return _klass_offset; }
285 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
286 // Support for classRedefinedCount field
287 static int classRedefinedCount(oop the_class_mirror);
288 static void set_classRedefinedCount(oop the_class_mirror, int value);
289
290 // Support for embedded per-class oops
291 static oop protection_domain(oop java_class);
292 static oop init_lock(oop java_class);
293 static oop component_mirror(oop java_class);
294 static objArrayOop signers(oop java_class);
295 static void set_signers(oop java_class, objArrayOop signers);
296
297 static oop class_loader(oop java_class);
298
299 static int oop_size(oop java_class);
300 static void set_oop_size(oop java_class, int size);
301 static int static_oop_field_count(oop java_class);
302 static void set_static_oop_field_count(oop java_class, int size);
303
304 static GrowableArray<Klass*>* fixup_mirror_list() {
305 return _fixup_mirror_list;
306 }
307 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
308 _fixup_mirror_list = v;
309 }
310 // Debugging
311 friend class JavaClasses;
312 friend class InstanceKlass; // verification code accesses offsets
313 friend class ClassFileParser; // access to number_of_fake_fields
314 };
315
316 // Interface to java.lang.Thread objects
317
318 class java_lang_Thread : AllStatic {
319 private:
320 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
321 // so we compute the offsets at startup rather than hard-wiring them.
322 static int _name_offset;
323 static int _group_offset;
324 static int _contextClassLoader_offset;
325 static int _inheritedAccessControlContext_offset;
326 static int _priority_offset;
327 static int _eetop_offset;
328 static int _daemon_offset;
329 static int _stillborn_offset;
330 static int _stackSize_offset;
331 static int _tid_offset;
332 static int _thread_status_offset;
333 static int _park_blocker_offset;
334 static int _park_event_offset ;
335
336 static void compute_offsets();
337
338 public:
339 // Instance creation
340 static oop create();
341 // Returns the JavaThread associated with the thread obj
342 static JavaThread* thread(oop java_thread);
343 // Set JavaThread for instance
344 static void set_thread(oop java_thread, JavaThread* thread);
345 // Name
346 static oop name(oop java_thread);
347 static void set_name(oop java_thread, oop name);
348 // Priority
349 static ThreadPriority priority(oop java_thread);
350 static void set_priority(oop java_thread, ThreadPriority priority);
351 // Thread group
352 static oop threadGroup(oop java_thread);
353 // Stillborn
354 static bool is_stillborn(oop java_thread);
355 static void set_stillborn(oop java_thread);
356 // Alive (NOTE: this is not really a field, but provides the correct
357 // definition without doing a Java call)
358 static bool is_alive(oop java_thread);
359 // Daemon
360 static bool is_daemon(oop java_thread);
361 static void set_daemon(oop java_thread);
362 // Context ClassLoader
363 static oop context_class_loader(oop java_thread);
364 // Control context
365 static oop inherited_access_control_context(oop java_thread);
366 // Stack size hint
367 static jlong stackSize(oop java_thread);
368 // Thread ID
369 static jlong thread_id(oop java_thread);
370
371 // Blocker object responsible for thread parking
372 static oop park_blocker(oop java_thread);
373
374 // Pointer to type-stable park handler, encoded as jlong.
375 // Should be set when apparently null
376 // For details, see unsafe.cpp Unsafe_Unpark
377 static jlong park_event(oop java_thread);
378 static bool set_park_event(oop java_thread, jlong ptr);
379
380 // Java Thread Status for JVMTI and M&M use.
381 // This thread status info is saved in threadStatus field of
382 // java.lang.Thread java class.
383 enum ThreadStatus {
384 NEW = 0,
385 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
386 JVMTI_THREAD_STATE_RUNNABLE,
387 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
388 JVMTI_THREAD_STATE_WAITING +
389 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
390 JVMTI_THREAD_STATE_SLEEPING,
391 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
392 JVMTI_THREAD_STATE_WAITING +
393 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
394 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
395 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
396 JVMTI_THREAD_STATE_WAITING +
397 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
398 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
399 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
400 JVMTI_THREAD_STATE_WAITING +
401 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
402 JVMTI_THREAD_STATE_PARKED,
403 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
404 JVMTI_THREAD_STATE_WAITING +
405 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
406 JVMTI_THREAD_STATE_PARKED,
407 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
408 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
409 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
410 };
411 // Write thread status info to threadStatus field of java.lang.Thread.
412 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
413 // Read thread status info from threadStatus field of java.lang.Thread.
414 static ThreadStatus get_thread_status(oop java_thread_oop);
415
416 static const char* thread_status_name(oop java_thread_oop);
417
418 // Debugging
419 friend class JavaClasses;
420 };
421
422 // Interface to java.lang.ThreadGroup objects
423
424 class java_lang_ThreadGroup : AllStatic {
425 private:
426 static int _parent_offset;
427 static int _name_offset;
428 static int _threads_offset;
429 static int _groups_offset;
430 static int _maxPriority_offset;
431 static int _destroyed_offset;
432 static int _daemon_offset;
433 static int _vmAllowSuspension_offset;
434 static int _nthreads_offset;
435 static int _ngroups_offset;
436
437 static void compute_offsets();
438
439 public:
440 // parent ThreadGroup
441 static oop parent(oop java_thread_group);
442 // name
443 static typeArrayOop name(oop java_thread_group);
444 // ("name as oop" accessor is not necessary)
445 // Number of threads in group
446 static int nthreads(oop java_thread_group);
447 // threads
448 static objArrayOop threads(oop java_thread_group);
449 // Number of threads in group
450 static int ngroups(oop java_thread_group);
451 // groups
452 static objArrayOop groups(oop java_thread_group);
453 // maxPriority in group
454 static ThreadPriority maxPriority(oop java_thread_group);
455 // Destroyed
456 static bool is_destroyed(oop java_thread_group);
457 // Daemon
458 static bool is_daemon(oop java_thread_group);
459 // vmAllowSuspension
460 static bool is_vmAllowSuspension(oop java_thread_group);
461 // Debugging
462 friend class JavaClasses;
463 };
464
465
466
467 // Interface to java.lang.Throwable objects
468
469 class java_lang_Throwable: AllStatic {
470 friend class BacktraceBuilder;
471
472 private:
473 // Offsets
474 enum {
475 hc_backtrace_offset = 0,
476 hc_detailMessage_offset = 1,
477 hc_cause_offset = 2, // New since 1.4
478 hc_stackTrace_offset = 3 // New since 1.4
479 };
480 enum {
481 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7
482 };
483 // Trace constants
484 enum {
485 trace_methods_offset = 0,
486 trace_bcis_offset = 1,
487 trace_mirrors_offset = 2,
488 trace_cprefs_offset = 3,
489 trace_next_offset = 4,
490 trace_size = 5,
491 trace_chunk_size = 32
492 };
493
494 static int backtrace_offset;
495 static int detailMessage_offset;
496 static int cause_offset;
497 static int stackTrace_offset;
498 static int static_unassigned_stacktrace_offset;
499
500 // Printing
501 static char* print_stack_element_to_buffer(Handle mirror, int method, int version, int bci, int cpref);
502 // StackTrace (programmatic access, new since 1.4)
503 static void clear_stacktrace(oop throwable);
504 // No stack trace available
505 static const char* no_stack_trace_message();
506 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
507 static void set_stacktrace(oop throwable, oop st_element_array);
508 static oop unassigned_stacktrace();
509
510 public:
511 // Backtrace
512 static oop backtrace(oop throwable);
513 static void set_backtrace(oop throwable, oop value);
514 // Needed by JVMTI to filter out this internal field.
515 static int get_backtrace_offset() { return backtrace_offset;}
516 static int get_detailMessage_offset() { return detailMessage_offset;}
517 // Message
518 static oop message(oop throwable);
519 static oop message(Handle throwable);
520 static void set_message(oop throwable, oop value);
521 static Symbol* detail_message(oop throwable);
522 static void print_stack_element(outputStream *st, Handle mirror, int method,
523 int version, int bci, int cpref);
524 static void print_stack_element(outputStream *st, methodHandle method, int bci);
525 static void print_stack_usage(Handle stream);
526
527 // Allocate space for backtrace (created but stack trace not filled in)
528 static void allocate_backtrace(Handle throwable, TRAPS);
529 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
530 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
531 // Fill in current stack trace, can cause GC
532 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS);
533 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle());
534 // Programmatic access to stack trace
535 static oop get_stack_trace_element(oop throwable, int index, TRAPS);
536 static int get_stack_trace_depth(oop throwable, TRAPS);
537 // Printing
538 static void print(oop throwable, outputStream* st);
539 static void print(Handle throwable, outputStream* st);
540 static void print_stack_trace(oop throwable, outputStream* st);
541 // Debugging
542 friend class JavaClasses;
543 };
544
545
546 // Interface to java.lang.reflect.AccessibleObject objects
547
548 class java_lang_reflect_AccessibleObject: AllStatic {
549 private:
550 // Note that to reduce dependencies on the JDK we compute these
551 // offsets at run-time.
552 static int override_offset;
553
554 static void compute_offsets();
555
556 public:
557 // Accessors
558 static jboolean override(oop reflect);
559 static void set_override(oop reflect, jboolean value);
560
561 // Debugging
562 friend class JavaClasses;
563 };
564
565
566 // Interface to java.lang.reflect.Method objects
567
568 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
569 private:
570 // Note that to reduce dependencies on the JDK we compute these
571 // offsets at run-time.
572 static int clazz_offset;
573 static int name_offset;
574 static int returnType_offset;
575 static int parameterTypes_offset;
576 static int exceptionTypes_offset;
577 static int slot_offset;
578 static int modifiers_offset;
579 static int signature_offset;
580 static int annotations_offset;
581 static int parameter_annotations_offset;
582 static int annotation_default_offset;
583 static int type_annotations_offset;
584
585 static void compute_offsets();
586
587 public:
588 // Allocation
589 static Handle create(TRAPS);
590
591 // Accessors
592 static oop clazz(oop reflect);
593 static void set_clazz(oop reflect, oop value);
594
595 static oop name(oop method);
596 static void set_name(oop method, oop value);
597
598 static oop return_type(oop method);
599 static void set_return_type(oop method, oop value);
600
601 static oop parameter_types(oop method);
602 static void set_parameter_types(oop method, oop value);
603
604 static oop exception_types(oop method);
605 static void set_exception_types(oop method, oop value);
606
607 static int slot(oop reflect);
608 static void set_slot(oop reflect, int value);
609
610 static int modifiers(oop method);
611 static void set_modifiers(oop method, int value);
612
613 static bool has_signature_field();
614 static oop signature(oop method);
615 static void set_signature(oop method, oop value);
616
617 static bool has_annotations_field();
618 static oop annotations(oop method);
619 static void set_annotations(oop method, oop value);
620
621 static bool has_parameter_annotations_field();
622 static oop parameter_annotations(oop method);
623 static void set_parameter_annotations(oop method, oop value);
624
625 static bool has_annotation_default_field();
626 static oop annotation_default(oop method);
627 static void set_annotation_default(oop method, oop value);
628
629 static bool has_type_annotations_field();
630 static oop type_annotations(oop method);
631 static void set_type_annotations(oop method, oop value);
632
633 // Debugging
634 friend class JavaClasses;
635 };
636
637
638 // Interface to java.lang.reflect.Constructor objects
639
640 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
641 private:
642 // Note that to reduce dependencies on the JDK we compute these
643 // offsets at run-time.
644 static int clazz_offset;
645 static int parameterTypes_offset;
646 static int exceptionTypes_offset;
647 static int slot_offset;
648 static int modifiers_offset;
649 static int signature_offset;
650 static int annotations_offset;
651 static int parameter_annotations_offset;
652 static int type_annotations_offset;
653
654 static void compute_offsets();
655
656 public:
657 // Allocation
658 static Handle create(TRAPS);
659
660 // Accessors
661 static oop clazz(oop reflect);
662 static void set_clazz(oop reflect, oop value);
663
664 static oop parameter_types(oop constructor);
665 static void set_parameter_types(oop constructor, oop value);
666
667 static oop exception_types(oop constructor);
668 static void set_exception_types(oop constructor, oop value);
669
670 static int slot(oop reflect);
671 static void set_slot(oop reflect, int value);
672
673 static int modifiers(oop constructor);
674 static void set_modifiers(oop constructor, int value);
675
676 static bool has_signature_field();
677 static oop signature(oop constructor);
678 static void set_signature(oop constructor, oop value);
679
680 static bool has_annotations_field();
681 static oop annotations(oop constructor);
682 static void set_annotations(oop constructor, oop value);
683
684 static bool has_parameter_annotations_field();
685 static oop parameter_annotations(oop method);
686 static void set_parameter_annotations(oop method, oop value);
687
688 static bool has_type_annotations_field();
689 static oop type_annotations(oop constructor);
690 static void set_type_annotations(oop constructor, oop value);
691
692 // Debugging
693 friend class JavaClasses;
694 };
695
696
697 // Interface to java.lang.reflect.Field objects
698
699 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
700 private:
701 // Note that to reduce dependencies on the JDK we compute these
702 // offsets at run-time.
703 static int clazz_offset;
704 static int name_offset;
705 static int type_offset;
706 static int slot_offset;
707 static int modifiers_offset;
708 static int signature_offset;
709 static int annotations_offset;
710 static int type_annotations_offset;
711
712 static void compute_offsets();
713
714 public:
715 // Allocation
716 static Handle create(TRAPS);
717
718 // Accessors
719 static oop clazz(oop reflect);
720 static void set_clazz(oop reflect, oop value);
721
722 static oop name(oop field);
723 static void set_name(oop field, oop value);
724
725 static oop type(oop field);
726 static void set_type(oop field, oop value);
727
728 static int slot(oop reflect);
729 static void set_slot(oop reflect, int value);
730
731 static int modifiers(oop field);
732 static void set_modifiers(oop field, int value);
733
734 static bool has_signature_field();
735 static oop signature(oop constructor);
736 static void set_signature(oop constructor, oop value);
737
738 static bool has_annotations_field();
739 static oop annotations(oop constructor);
740 static void set_annotations(oop constructor, oop value);
741
742 static bool has_parameter_annotations_field();
743 static oop parameter_annotations(oop method);
744 static void set_parameter_annotations(oop method, oop value);
745
746 static bool has_annotation_default_field();
747 static oop annotation_default(oop method);
748 static void set_annotation_default(oop method, oop value);
749
750 static bool has_type_annotations_field();
751 static oop type_annotations(oop field);
752 static void set_type_annotations(oop field, oop value);
753
754 // Debugging
755 friend class JavaClasses;
756 };
757
758 class java_lang_reflect_Parameter {
759 private:
760 // Note that to reduce dependencies on the JDK we compute these
761 // offsets at run-time.
762 static int name_offset;
763 static int modifiers_offset;
764 static int index_offset;
765 static int executable_offset;
766
767 static void compute_offsets();
768
769 public:
770 // Allocation
771 static Handle create(TRAPS);
772
773 // Accessors
774 static oop name(oop field);
775 static void set_name(oop field, oop value);
776
777 static int index(oop reflect);
778 static void set_index(oop reflect, int value);
779
780 static int modifiers(oop reflect);
781 static void set_modifiers(oop reflect, int value);
782
783 static oop executable(oop constructor);
784 static void set_executable(oop constructor, oop value);
785
786 friend class JavaClasses;
787 };
788
789 // Interface to sun.reflect.ConstantPool objects
790 class sun_reflect_ConstantPool {
791 private:
792 // Note that to reduce dependencies on the JDK we compute these
793 // offsets at run-time.
794 static int _oop_offset;
795
796 static void compute_offsets();
797
798 public:
799 // Allocation
800 static Handle create(TRAPS);
801
802 // Accessors
803 static void set_cp(oop reflect, ConstantPool* value);
804 static int oop_offset() {
805 return _oop_offset;
806 }
807
808 static ConstantPool* get_cp(oop reflect);
809
810 // Debugging
811 friend class JavaClasses;
812 };
813
814 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects
815 class sun_reflect_UnsafeStaticFieldAccessorImpl {
816 private:
817 static int _base_offset;
818 static void compute_offsets();
819
820 public:
821 static int base_offset() {
822 return _base_offset;
823 }
824
825 // Debugging
826 friend class JavaClasses;
827 };
828
829 // Interface to java.lang primitive type boxing objects:
830 // - java.lang.Boolean
831 // - java.lang.Character
832 // - java.lang.Float
833 // - java.lang.Double
834 // - java.lang.Byte
835 // - java.lang.Short
836 // - java.lang.Integer
837 // - java.lang.Long
838
839 // This could be separated out into 8 individual classes.
840
841 class java_lang_boxing_object: AllStatic {
842 private:
843 enum {
844 hc_value_offset = 0
845 };
846 static int value_offset;
847 static int long_value_offset;
848
849 static oop initialize_and_allocate(BasicType type, TRAPS);
850 public:
851 // Allocation. Returns a boxed value, or NULL for invalid type.
852 static oop create(BasicType type, jvalue* value, TRAPS);
853 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
854 static BasicType get_value(oop box, jvalue* value);
855 static BasicType set_value(oop box, jvalue* value);
856 static BasicType basic_type(oop box);
857 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
858 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
859 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
860 static void print(BasicType type, jvalue* value, outputStream* st);
861
862 static int value_offset_in_bytes(BasicType type) {
863 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
864 value_offset;
865 }
866
867 // Debugging
868 friend class JavaClasses;
869 };
870
871
872
873 // Interface to java.lang.ref.Reference objects
874
875 class java_lang_ref_Reference: AllStatic {
876 public:
877 enum {
878 hc_referent_offset = 0,
879 hc_queue_offset = 1,
880 hc_next_offset = 2,
881 hc_discovered_offset = 3 // Is not last, see SoftRefs.
882 };
883 enum {
884 hc_static_lock_offset = 0,
885 hc_static_pending_offset = 1
886 };
887
888 static int referent_offset;
889 static int queue_offset;
890 static int next_offset;
891 static int discovered_offset;
892 static int static_lock_offset;
893 static int static_pending_offset;
894 static int number_of_fake_oop_fields;
895
896 // Accessors
897 static oop referent(oop ref) {
898 return ref->obj_field(referent_offset);
899 }
900 static void set_referent(oop ref, oop value) {
901 ref->obj_field_put(referent_offset, value);
902 }
903 static void set_referent_raw(oop ref, oop value) {
904 ref->obj_field_put_raw(referent_offset, value);
905 }
906 static HeapWord* referent_addr(oop ref) {
907 return ref->obj_field_addr<HeapWord>(referent_offset);
908 }
909 static oop next(oop ref) {
910 return ref->obj_field(next_offset);
911 }
912 static void set_next(oop ref, oop value) {
913 ref->obj_field_put(next_offset, value);
914 }
915 static void set_next_raw(oop ref, oop value) {
916 ref->obj_field_put_raw(next_offset, value);
917 }
918 static HeapWord* next_addr(oop ref) {
919 return ref->obj_field_addr<HeapWord>(next_offset);
920 }
921 static oop discovered(oop ref) {
922 return ref->obj_field(discovered_offset);
923 }
924 static void set_discovered(oop ref, oop value) {
925 ref->obj_field_put(discovered_offset, value);
926 }
927 static void set_discovered_raw(oop ref, oop value) {
928 ref->obj_field_put_raw(discovered_offset, value);
929 }
930 static HeapWord* discovered_addr(oop ref) {
931 return ref->obj_field_addr<HeapWord>(discovered_offset);
932 }
933 // Accessors for statics
934 static oop pending_list_lock();
935 static oop pending_list();
936
937 static HeapWord* pending_list_lock_addr();
938 static HeapWord* pending_list_addr();
939 };
940
941
942 // Interface to java.lang.ref.SoftReference objects
943
944 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
945 public:
946 enum {
947 // The timestamp is a long field and may need to be adjusted for alignment.
948 hc_timestamp_offset = hc_discovered_offset + 1
949 };
950 enum {
951 hc_static_clock_offset = 0
952 };
953
954 static int timestamp_offset;
955 static int static_clock_offset;
956
957 // Accessors
958 static jlong timestamp(oop ref);
959
960 // Accessors for statics
961 static jlong clock();
962 static void set_clock(jlong value);
963 };
964
965 // Interface to java.lang.invoke.MethodHandle objects
966
967 class MethodHandleEntry;
968
969 class java_lang_invoke_MethodHandle: AllStatic {
970 friend class JavaClasses;
971
972 private:
973 static int _type_offset; // the MethodType of this MH
974 static int _form_offset; // the LambdaForm of this MH
975
976 static void compute_offsets();
977
978 public:
979 // Accessors
980 static oop type(oop mh);
981 static void set_type(oop mh, oop mtype);
982
983 static oop form(oop mh);
984 static void set_form(oop mh, oop lform);
985
986 // Testers
987 static bool is_subclass(Klass* klass) {
988 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
989 }
990 static bool is_instance(oop obj);
991
992 // Accessors for code generation:
993 static int type_offset_in_bytes() { return _type_offset; }
994 static int form_offset_in_bytes() { return _form_offset; }
995 };
996
997 // Interface to java.lang.invoke.DirectMethodHandle objects
998
999 class java_lang_invoke_DirectMethodHandle: AllStatic {
1000 friend class JavaClasses;
1001
1002 private:
1003 static int _member_offset; // the MemberName of this DMH
1004
1005 static void compute_offsets();
1006
1007 public:
1008 // Accessors
1009 static oop member(oop mh);
1010
1011 // Testers
1012 static bool is_subclass(Klass* klass) {
1013 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1014 }
1015 static bool is_instance(oop obj);
1016
1017 // Accessors for code generation:
1018 static int member_offset_in_bytes() { return _member_offset; }
1019 };
1020
1021 // Interface to java.lang.invoke.LambdaForm objects
1022 // (These are a private interface for managing adapter code generation.)
1023
1024 class java_lang_invoke_LambdaForm: AllStatic {
1025 friend class JavaClasses;
1026
1027 private:
1028 static int _vmentry_offset; // type is MemberName
1029
1030 static void compute_offsets();
1031
1032 public:
1033 // Accessors
1034 static oop vmentry(oop lform);
1035 static void set_vmentry(oop lform, oop invoker);
1036
1037 // Testers
1038 static bool is_subclass(Klass* klass) {
1039 return SystemDictionary::LambdaForm_klass() != NULL &&
1040 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1041 }
1042 static bool is_instance(oop obj);
1043
1044 // Accessors for code generation:
1045 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1046 };
1047
1048
1049 // Interface to java.lang.invoke.MemberName objects
1050 // (These are a private interface for Java code to query the class hierarchy.)
1051
1052 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1053 macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \
1054 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) \
1055 macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false)
1056
1057 class java_lang_invoke_MemberName: AllStatic {
1058 friend class JavaClasses;
1059
1060 private:
1061 // From java.lang.invoke.MemberName:
1062 // private Class<?> clazz; // class in which the method is defined
1063 // private String name; // may be null if not yet materialized
1064 // private Object type; // may be null if not yet materialized
1065 // private int flags; // modifier bits; see reflect.Modifier
1066 // private intptr vmtarget; // VM-specific target value
1067 // private intptr_t vmindex; // member index within class or interface
1068 static int _clazz_offset;
1069 static int _name_offset;
1070 static int _type_offset;
1071 static int _flags_offset;
1072 static int _vmtarget_offset;
1073 static int _vmloader_offset;
1074 static int _vmindex_offset;
1075
1076 static void compute_offsets();
1077
1078 public:
1079 // Accessors
1080 static oop clazz(oop mname);
1081 static void set_clazz(oop mname, oop clazz);
1082
1083 static oop type(oop mname);
1084 static void set_type(oop mname, oop type);
1085
1086 static oop name(oop mname);
1087 static void set_name(oop mname, oop name);
1088
1089 static int flags(oop mname);
1090 static void set_flags(oop mname, int flags);
1091
1092 static Metadata* vmtarget(oop mname);
1093 static void set_vmtarget(oop mname, Metadata* target);
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
1104 static bool is_method(oop obj);
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
1157 static bool equals(oop mt1, oop mt2);
1158
1159 // Accessors for code generation:
1160 static int rtype_offset_in_bytes() { return _rtype_offset; }
1161 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1162 };
1163
1164
1165 // Interface to java.lang.invoke.CallSite objects
1166
1167 class java_lang_invoke_CallSite: AllStatic {
1168 friend class JavaClasses;
1169
1170 private:
1171 static int _target_offset;
1172 static int _context_offset;
1173
1174 static void compute_offsets();
1175
1176 public:
1177 // Accessors
1178 static oop target( oop site);
1179 static void set_target( oop site, oop target);
1180 static void set_target_volatile( oop site, oop target);
1181
1182 static oop context(oop site);
1183
1184 // Testers
1185 static bool is_subclass(Klass* klass) {
1186 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1187 }
1188 static bool is_instance(oop obj);
1189
1190 // Accessors for code generation:
1191 static int target_offset_in_bytes() { return _target_offset; }
1192 };
1193
1194 // Interface to java.lang.invoke.CallSite$Context objects
1195
1196 class java_lang_invoke_CallSite_Context : AllStatic {
1197 friend class JavaClasses;
1198
1199 private:
1200 static int _dependencies_offset;
1201
1202 static void compute_offsets();
1203
1204 public:
1205 // Accessors
1206 static nmethodBucket* dependencies(oop context);
1207 static void set_dependencies(oop context, nmethodBucket* bucket);
1208
1209 // Testers
1210 static bool is_subclass(Klass* klass) {
1211 return klass->is_subclass_of(SystemDictionary::Context_klass());
1212 }
1213 static bool is_instance(oop obj);
1214 };
1215
1216 // Interface to java.security.AccessControlContext objects
1217
1218 class java_security_AccessControlContext: AllStatic {
1219 private:
1220 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1221 // so we compute the offsets at startup rather than hard-wiring them.
1222 static int _context_offset;
1223 static int _privilegedContext_offset;
1224 static int _isPrivileged_offset;
1225 static int _isAuthorized_offset;
1226
1227 static void compute_offsets();
1228 public:
1229 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1230
1231 static bool is_authorized(Handle context);
1232
1233 // Debugging/initialization
1234 friend class JavaClasses;
1235 };
1236
1237
1238 // Interface to java.lang.ClassLoader objects
1239
1240 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1241 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1242
1243 class java_lang_ClassLoader : AllStatic {
1244 private:
1245 // The fake offsets are added by the class loader when java.lang.Class is loaded
1246 enum {
1247 hc_parent_offset = 0
1248 };
1249 static int _loader_data_offset;
1250 static bool offsets_computed;
1251 static int parent_offset;
1252 static int parallelCapable_offset;
1253
1254 public:
1255 static void compute_offsets();
1256
1257 static ClassLoaderData** loader_data_addr(oop loader);
1258 static ClassLoaderData* loader_data(oop loader);
1259
1260 static oop parent(oop loader);
1261 static bool isAncestor(oop loader, oop cl);
1262
1263 // Support for parallelCapable field
1264 static bool parallelCapable(oop the_class_mirror);
1265
1266 static bool is_trusted_loader(oop loader);
1267
1268 // Fix for 4474172
1269 static oop non_reflection_class_loader(oop loader);
1270
1271 // Testers
1272 static bool is_subclass(Klass* klass) {
1273 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1274 }
1275 static bool is_instance(oop obj);
1276
1277 // Debugging
1278 friend class JavaClasses;
1279 friend class ClassFileParser; // access to number_of_fake_fields
1280 };
1281
1282
1283 // Interface to java.lang.System objects
1284
1285 class java_lang_System : AllStatic {
1286 private:
1287 enum {
1288 hc_static_in_offset = 0,
1289 hc_static_out_offset = 1,
1290 hc_static_err_offset = 2,
1291 hc_static_security_offset = 3
1292 };
1293
1294 static int static_in_offset;
1295 static int static_out_offset;
1296 static int static_err_offset;
1297 static int static_security_offset;
1298
1299 public:
1300 static int in_offset_in_bytes();
1301 static int out_offset_in_bytes();
1302 static int err_offset_in_bytes();
1303
1304 static bool has_security_manager();
1305
1306 // Debugging
1307 friend class JavaClasses;
1308 };
1309
1310
1311 // Interface to java.lang.StackTraceElement objects
1312
1313 class java_lang_StackTraceElement: AllStatic {
1314 private:
1315 enum {
1316 hc_declaringClass_offset = 0,
1317 hc_methodName_offset = 1,
1318 hc_fileName_offset = 2,
1319 hc_lineNumber_offset = 3
1320 };
1321
1322 static int declaringClass_offset;
1323 static int methodName_offset;
1324 static int fileName_offset;
1325 static int lineNumber_offset;
1326
1327 public:
1328 // Setters
1329 static void set_declaringClass(oop element, oop value);
1330 static void set_methodName(oop element, oop value);
1331 static void set_fileName(oop element, oop value);
1332 static void set_lineNumber(oop element, int value);
1333
1334 // Create an instance of StackTraceElement
1335 static oop create(Handle mirror, int method, int version, int bci, int cpref, TRAPS);
1336 static oop create(methodHandle method, int bci, TRAPS);
1337
1338 // Debugging
1339 friend class JavaClasses;
1340 };
1341
1342
1343 // Interface to java.lang.AssertionStatusDirectives objects
1344
1345 class java_lang_AssertionStatusDirectives: AllStatic {
1346 private:
1347 enum {
1348 hc_classes_offset,
1349 hc_classEnabled_offset,
1350 hc_packages_offset,
1351 hc_packageEnabled_offset,
1352 hc_deflt_offset
1353 };
1354
1355 static int classes_offset;
1356 static int classEnabled_offset;
1357 static int packages_offset;
1358 static int packageEnabled_offset;
1359 static int deflt_offset;
1360
1361 public:
1362 // Setters
1363 static void set_classes(oop obj, oop val);
1364 static void set_classEnabled(oop obj, oop val);
1365 static void set_packages(oop obj, oop val);
1366 static void set_packageEnabled(oop obj, oop val);
1367 static void set_deflt(oop obj, bool val);
1368 // Debugging
1369 friend class JavaClasses;
1370 };
1371
1372
1373 class java_nio_Buffer: AllStatic {
1374 private:
1375 static int _limit_offset;
1376
1377 public:
1378 static int limit_offset();
1379 static void compute_offsets();
1380 };
1381
1382 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1383 private:
1384 static int _owner_offset;
1385 public:
1386 static void initialize(TRAPS);
1387 static oop get_owner_threadObj(oop obj);
1388 };
1389
1390 // Use to declare fields that need to be injected into Java classes
1391 // for the JVM to use. The name_index and signature_index are
1392 // declared in vmSymbols. The may_be_java flag is used to declare
1393 // fields that might already exist in Java but should be injected if
1394 // they don't. Otherwise the field is unconditionally injected and
1395 // the JVM uses the injected one. This is to ensure that name
1396 // collisions don't occur. In general may_be_java should be false
1397 // unless there's a good reason.
1398
1399 class InjectedField {
1400 public:
1401 const SystemDictionary::WKID klass_id;
1402 const vmSymbols::SID name_index;
1403 const vmSymbols::SID signature_index;
1404 const bool may_be_java;
1405
1406
1407 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1408 Symbol* name() const { return lookup_symbol(name_index); }
1409 Symbol* signature() const { return lookup_symbol(signature_index); }
1410
1411 int compute_offset();
1412
1413 // Find the Symbol for this index
1414 static Symbol* lookup_symbol(int symbol_index) {
1415 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1416 }
1417 };
1418
1419 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1420 klass##_##name##_enum,
1421
1422 #define ALL_INJECTED_FIELDS(macro) \
1423 CLASS_INJECTED_FIELDS(macro) \
1424 CLASSLOADER_INJECTED_FIELDS(macro) \
1425 MEMBERNAME_INJECTED_FIELDS(macro)
1426
1427 // Interface to hard-coded offset checking
1428
1429 class JavaClasses : AllStatic {
1430 private:
1431
1432 static InjectedField _injected_fields[];
1433
1434 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1435 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1436 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1437
1438 public:
1439 enum InjectedFieldID {
1440 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1441 MAX_enum
1442 };
1443
1444 static int compute_injected_offset(InjectedFieldID id);
1445
1446 static void compute_hard_coded_offsets();
1447 static void compute_offsets();
1448 static void check_offsets() PRODUCT_RETURN;
1449
1450 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1451 };
1452
1453 #undef DECLARE_INJECTED_FIELD_ENUM
1454
1455 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP