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_raw(oop string, typeArrayOop buffer) {
122 assert(initialized, "Must be initialized");
123 string->obj_field_put_raw(value_offset, buffer);
124 }
125 static void set_value(oop string, typeArrayOop buffer) {
126 assert(initialized && (value_offset > 0), "Must be initialized");
127 string->obj_field_put(value_offset, (oop)buffer);
128 }
129 static void set_hash(oop string, unsigned int hash) {
130 assert(initialized && (hash_offset > 0), "Must be initialized");
131 string->int_field_put(hash_offset, hash);
132 }
133
134 // Accessors
135 static typeArrayOop value(oop java_string) {
136 assert(initialized && (value_offset > 0), "Must be initialized");
137 assert(is_instance(java_string), "must be java_string");
138 return (typeArrayOop) java_string->obj_field(value_offset);
139 }
140 static unsigned int hash(oop java_string) {
141 assert(initialized && (hash_offset > 0), "Must be initialized");
142 assert(is_instance(java_string), "must be java_string");
143 return java_string->int_field(hash_offset);
144 }
145 static int offset(oop java_string) {
146 assert(initialized, "Must be initialized");
147 assert(is_instance(java_string), "must be java_string");
148 if (offset_offset > 0) {
149 return java_string->int_field(offset_offset);
150 } else {
151 return 0;
152 }
153 }
154 static int length(oop java_string) {
155 assert(initialized, "Must be initialized");
156 assert(is_instance(java_string), "must be java_string");
157 if (count_offset > 0) {
158 return java_string->int_field(count_offset);
159 } else {
160 oop value = java_string->obj_field(value_offset);
161 if (ShenandoahVerifyReadsToFromSpace) {
162 value = oopDesc::bs()->read_barrier(value);
163 }
164 return ((typeArrayOop) value)->length();
165 }
166 }
167 static int utf8_length(oop java_string);
168
169 // String converters
170 static char* as_utf8_string(oop java_string);
171 static char* as_utf8_string(oop java_string, char* buf, int buflen);
172 static char* as_utf8_string(oop java_string, int start, int len);
173 static char* as_utf8_string(oop java_string, int start, int len, char* buf, int buflen);
174 static char* as_platform_dependent_str(Handle java_string, TRAPS);
175 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
176 // produce an ascii string with all other values quoted using \u####
177 static char* as_quoted_ascii(oop java_string);
178
179 // Compute the hash value for a java.lang.String object which would
180 // contain the characters passed in.
181 //
182 // As the hash value used by the String object itself, in
183 // String.hashCode(). This value is normally calculated in Java code
184 // in the String.hashCode method(), but is precomputed for String
185 // objects in the shared archive file.
186 // hash P(31) from Kernighan & Ritchie
187 //
188 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
189 template <typename T> static unsigned int hash_code(T* s, int len) {
190 unsigned int h = 0;
191 while (len-- > 0) {
192 h = 31*h + (unsigned int) *s;
193 s++;
194 }
195 return h;
196 }
197 static unsigned int hash_code(oop java_string);
198
199 // This is the string hash code used by the StringTable, which may be
200 // the same as String.hashCode or an alternate hash code.
201 static unsigned int hash_string(oop java_string);
202
203 static bool equals(oop java_string, jchar* chars, int len);
204 static bool equals(oop str1, oop str2);
205
206 // Conversion between '.' and '/' formats
207 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
208 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
209
210 // Conversion
211 static Symbol* as_symbol(Handle java_string, TRAPS);
212 static Symbol* as_symbol_or_null(oop java_string);
213
214 // Testers
215 static bool is_instance(oop obj);
216 static bool is_instance_inlined(oop obj);
217
218 // Debugging
219 static void print(oop java_string, outputStream* st);
220 friend class JavaClasses;
221 friend class StringTable;
222 };
223
224
225 // Interface to java.lang.Class objects
226
227 #define CLASS_INJECTED_FIELDS(macro) \
228 macro(java_lang_Class, klass, intptr_signature, false) \
229 macro(java_lang_Class, array_klass, intptr_signature, false) \
230 macro(java_lang_Class, oop_size, int_signature, false) \
231 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
232 macro(java_lang_Class, protection_domain, object_signature, false) \
233 macro(java_lang_Class, signers, object_signature, false)
234
235 class java_lang_Class : AllStatic {
236 friend class VMStructs;
237
238 private:
239 // The fake offsets are added by the class loader when java.lang.Class is loaded
240
241 static int _klass_offset;
242 static int _array_klass_offset;
243
244 static int _oop_size_offset;
245 static int _static_oop_field_count_offset;
246
247 static int _protection_domain_offset;
248 static int _init_lock_offset;
249 static int _signers_offset;
250 static int _class_loader_offset;
251 static int _component_mirror_offset;
252
253 static bool offsets_computed;
254 static int classRedefinedCount_offset;
255
256 static GrowableArray<Klass*>* _fixup_mirror_list;
257
258 static void set_init_lock(oop java_class, oop init_lock);
259 static void set_protection_domain(oop java_class, oop protection_domain);
260 static void set_class_loader(oop java_class, oop class_loader);
261 static void set_component_mirror(oop java_class, oop comp_mirror);
262 static void initialize_mirror_fields(KlassHandle k, Handle mirror, Handle protection_domain, TRAPS);
263 public:
264 static void compute_offsets();
265
266 // Instance creation
267 static void create_mirror(KlassHandle k, Handle class_loader,
268 Handle protection_domain, TRAPS);
269 static void fixup_mirror(KlassHandle k, TRAPS);
270 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
271 // Conversion
272 static Klass* as_Klass(oop java_class);
273 static void set_klass(oop java_class, Klass* klass);
274 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
275 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) {
276 Klass* refk_oop = NULL;
277 BasicType result = as_BasicType(java_class, &refk_oop);
278 (*reference_klass) = KlassHandle(refk_oop);
279 return result;
280 }
281 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
282 static void print_signature(oop java_class, outputStream *st);
283 static const char* as_external_name(oop java_class);
284 // Testing
285 static bool is_instance(oop obj);
286
287 static bool is_primitive(oop java_class);
288 static BasicType primitive_type(oop java_class);
289 static oop primitive_mirror(BasicType t);
290 // JVM_NewArray support
291 static Klass* array_klass(oop java_class);
292 static void set_array_klass(oop java_class, Klass* klass);
293 // compiler support for class operations
294 static int klass_offset_in_bytes() { return _klass_offset; }
295 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
296 // Support for classRedefinedCount field
297 static int classRedefinedCount(oop the_class_mirror);
298 static void set_classRedefinedCount(oop the_class_mirror, int value);
299
300 // Support for embedded per-class oops
301 static oop protection_domain(oop java_class);
302 static oop init_lock(oop java_class);
303 static oop component_mirror(oop java_class);
304 static objArrayOop signers(oop java_class);
305 static void set_signers(oop java_class, objArrayOop signers);
306
307 static oop class_loader(oop java_class);
308
309 static int oop_size(oop java_class);
310 static void set_oop_size(oop java_class, int size);
311 static int static_oop_field_count(oop java_class);
312 static void set_static_oop_field_count(oop java_class, int size);
313
314 static GrowableArray<Klass*>* fixup_mirror_list() {
315 return _fixup_mirror_list;
316 }
317 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
318 _fixup_mirror_list = v;
319 }
320 // Debugging
321 friend class JavaClasses;
322 friend class InstanceKlass; // verification code accesses offsets
323 friend class ClassFileParser; // access to number_of_fake_fields
324 };
325
326 // Interface to java.lang.Thread objects
327
328 class java_lang_Thread : AllStatic {
329 private:
330 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
331 // so we compute the offsets at startup rather than hard-wiring them.
332 static int _name_offset;
333 static int _group_offset;
334 static int _contextClassLoader_offset;
335 static int _inheritedAccessControlContext_offset;
336 static int _priority_offset;
337 static int _eetop_offset;
338 static int _daemon_offset;
339 static int _stillborn_offset;
340 static int _stackSize_offset;
341 static int _tid_offset;
342 static int _thread_status_offset;
343 static int _park_blocker_offset;
344 static int _park_event_offset ;
345
346 static void compute_offsets();
347
348 public:
349 // Instance creation
350 static oop create();
351 // Returns the JavaThread associated with the thread obj
352 static JavaThread* thread(oop java_thread);
353 // Set JavaThread for instance
354 static void set_thread(oop java_thread, JavaThread* thread);
355 // Name
356 static oop name(oop java_thread);
357 static void set_name(oop java_thread, oop name);
358 // Priority
359 static ThreadPriority priority(oop java_thread);
360 static void set_priority(oop java_thread, ThreadPriority priority);
361 // Thread group
362 static oop threadGroup(oop java_thread);
363 // Stillborn
364 static bool is_stillborn(oop java_thread);
365 static void set_stillborn(oop java_thread);
366 // Alive (NOTE: this is not really a field, but provides the correct
367 // definition without doing a Java call)
368 static bool is_alive(oop java_thread);
369 // Daemon
370 static bool is_daemon(oop java_thread);
371 static void set_daemon(oop java_thread);
372 // Context ClassLoader
373 static oop context_class_loader(oop java_thread);
374 // Control context
375 static oop inherited_access_control_context(oop java_thread);
376 // Stack size hint
377 static jlong stackSize(oop java_thread);
378 // Thread ID
379 static jlong thread_id(oop java_thread);
380
381 // Blocker object responsible for thread parking
382 static oop park_blocker(oop java_thread);
383
384 // Pointer to type-stable park handler, encoded as jlong.
385 // Should be set when apparently null
386 // For details, see unsafe.cpp Unsafe_Unpark
387 static jlong park_event(oop java_thread);
388 static bool set_park_event(oop java_thread, jlong ptr);
389
390 // Java Thread Status for JVMTI and M&M use.
391 // This thread status info is saved in threadStatus field of
392 // java.lang.Thread java class.
393 enum ThreadStatus {
394 NEW = 0,
395 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
396 JVMTI_THREAD_STATE_RUNNABLE,
397 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
398 JVMTI_THREAD_STATE_WAITING +
399 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
400 JVMTI_THREAD_STATE_SLEEPING,
401 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
402 JVMTI_THREAD_STATE_WAITING +
403 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
404 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
405 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
406 JVMTI_THREAD_STATE_WAITING +
407 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
408 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
409 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
410 JVMTI_THREAD_STATE_WAITING +
411 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
412 JVMTI_THREAD_STATE_PARKED,
413 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
414 JVMTI_THREAD_STATE_WAITING +
415 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
416 JVMTI_THREAD_STATE_PARKED,
417 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
418 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
419 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
420 };
421 // Write thread status info to threadStatus field of java.lang.Thread.
422 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
423 // Read thread status info from threadStatus field of java.lang.Thread.
424 static ThreadStatus get_thread_status(oop java_thread_oop);
425
426 static const char* thread_status_name(oop java_thread_oop);
427
428 // Debugging
429 friend class JavaClasses;
430 };
431
432 // Interface to java.lang.ThreadGroup objects
433
434 class java_lang_ThreadGroup : AllStatic {
435 private:
436 static int _parent_offset;
437 static int _name_offset;
438 static int _threads_offset;
439 static int _groups_offset;
440 static int _maxPriority_offset;
441 static int _destroyed_offset;
442 static int _daemon_offset;
443 static int _vmAllowSuspension_offset;
444 static int _nthreads_offset;
445 static int _ngroups_offset;
446
447 static void compute_offsets();
448
449 public:
450 // parent ThreadGroup
451 static oop parent(oop java_thread_group);
452 // name
453 static typeArrayOop name(oop java_thread_group);
454 // ("name as oop" accessor is not necessary)
455 // Number of threads in group
456 static int nthreads(oop java_thread_group);
457 // threads
458 static objArrayOop threads(oop java_thread_group);
459 // Number of threads in group
460 static int ngroups(oop java_thread_group);
461 // groups
462 static objArrayOop groups(oop java_thread_group);
463 // maxPriority in group
464 static ThreadPriority maxPriority(oop java_thread_group);
465 // Destroyed
466 static bool is_destroyed(oop java_thread_group);
467 // Daemon
468 static bool is_daemon(oop java_thread_group);
469 // vmAllowSuspension
470 static bool is_vmAllowSuspension(oop java_thread_group);
471 // Debugging
472 friend class JavaClasses;
473 };
474
475
476
477 // Interface to java.lang.Throwable objects
478
479 class java_lang_Throwable: AllStatic {
480 friend class BacktraceBuilder;
481
482 private:
483 // Offsets
484 enum {
485 hc_backtrace_offset = 0,
486 hc_detailMessage_offset = 1,
487 hc_cause_offset = 2, // New since 1.4
488 hc_stackTrace_offset = 3 // New since 1.4
489 };
490 enum {
491 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7
492 };
493 // Trace constants
494 enum {
495 trace_methods_offset = 0,
496 trace_bcis_offset = 1,
497 trace_mirrors_offset = 2,
498 trace_cprefs_offset = 3,
499 trace_next_offset = 4,
500 trace_size = 5,
501 trace_chunk_size = 32
502 };
503
504 static int backtrace_offset;
505 static int detailMessage_offset;
506 static int cause_offset;
507 static int stackTrace_offset;
508 static int static_unassigned_stacktrace_offset;
509
510 // Printing
511 static char* print_stack_element_to_buffer(Handle mirror, int method, int version, int bci, int cpref);
512 // StackTrace (programmatic access, new since 1.4)
513 static void clear_stacktrace(oop throwable);
514 // No stack trace available
515 static const char* no_stack_trace_message();
516 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
517 static void set_stacktrace(oop throwable, oop st_element_array);
518 static oop unassigned_stacktrace();
519
520 public:
521 // Backtrace
522 static oop backtrace(oop throwable);
523 static void set_backtrace(oop throwable, oop value);
524 // Needed by JVMTI to filter out this internal field.
525 static int get_backtrace_offset() { return backtrace_offset;}
526 static int get_detailMessage_offset() { return detailMessage_offset;}
527 // Message
528 static oop message(oop throwable);
529 static oop message(Handle throwable);
530 static void set_message(oop throwable, oop value);
531 static Symbol* detail_message(oop throwable);
532 static void print_stack_element(outputStream *st, Handle mirror, int method,
533 int version, int bci, int cpref);
534 static void print_stack_element(outputStream *st, methodHandle method, int bci);
535 static void print_stack_usage(Handle stream);
536
537 // Allocate space for backtrace (created but stack trace not filled in)
538 static void allocate_backtrace(Handle throwable, TRAPS);
539 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
540 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
541 // Fill in current stack trace, can cause GC
542 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS);
543 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle());
544 // Programmatic access to stack trace
545 static oop get_stack_trace_element(oop throwable, int index, TRAPS);
546 static int get_stack_trace_depth(oop throwable, TRAPS);
547 // Printing
548 static void print(oop throwable, outputStream* st);
549 static void print(Handle throwable, outputStream* st);
550 static void print_stack_trace(oop throwable, outputStream* st);
551 // Debugging
552 friend class JavaClasses;
553 };
554
555
556 // Interface to java.lang.reflect.AccessibleObject objects
557
558 class java_lang_reflect_AccessibleObject: AllStatic {
559 private:
560 // Note that to reduce dependencies on the JDK we compute these
561 // offsets at run-time.
562 static int override_offset;
563
564 static void compute_offsets();
565
566 public:
567 // Accessors
568 static jboolean override(oop reflect);
569 static void set_override(oop reflect, jboolean value);
570
571 // Debugging
572 friend class JavaClasses;
573 };
574
575
576 // Interface to java.lang.reflect.Method objects
577
578 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
579 private:
580 // Note that to reduce dependencies on the JDK we compute these
581 // offsets at run-time.
582 static int clazz_offset;
583 static int name_offset;
584 static int returnType_offset;
585 static int parameterTypes_offset;
586 static int exceptionTypes_offset;
587 static int slot_offset;
588 static int modifiers_offset;
589 static int signature_offset;
590 static int annotations_offset;
591 static int parameter_annotations_offset;
592 static int annotation_default_offset;
593 static int type_annotations_offset;
594
595 static void compute_offsets();
596
597 public:
598 // Allocation
599 static Handle create(TRAPS);
600
601 // Accessors
602 static oop clazz(oop reflect);
603 static void set_clazz(oop reflect, oop value);
604
605 static oop name(oop method);
606 static void set_name(oop method, oop value);
607
608 static oop return_type(oop method);
609 static void set_return_type(oop method, oop value);
610
611 static oop parameter_types(oop method);
612 static void set_parameter_types(oop method, oop value);
613
614 static oop exception_types(oop method);
615 static void set_exception_types(oop method, oop value);
616
617 static int slot(oop reflect);
618 static void set_slot(oop reflect, int value);
619
620 static int modifiers(oop method);
621 static void set_modifiers(oop method, int value);
622
623 static bool has_signature_field();
624 static oop signature(oop method);
625 static void set_signature(oop method, oop value);
626
627 static bool has_annotations_field();
628 static oop annotations(oop method);
629 static void set_annotations(oop method, oop value);
630
631 static bool has_parameter_annotations_field();
632 static oop parameter_annotations(oop method);
633 static void set_parameter_annotations(oop method, oop value);
634
635 static bool has_annotation_default_field();
636 static oop annotation_default(oop method);
637 static void set_annotation_default(oop method, oop value);
638
639 static bool has_type_annotations_field();
640 static oop type_annotations(oop method);
641 static void set_type_annotations(oop method, oop value);
642
643 // Debugging
644 friend class JavaClasses;
645 };
646
647
648 // Interface to java.lang.reflect.Constructor objects
649
650 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
651 private:
652 // Note that to reduce dependencies on the JDK we compute these
653 // offsets at run-time.
654 static int clazz_offset;
655 static int parameterTypes_offset;
656 static int exceptionTypes_offset;
657 static int slot_offset;
658 static int modifiers_offset;
659 static int signature_offset;
660 static int annotations_offset;
661 static int parameter_annotations_offset;
662 static int type_annotations_offset;
663
664 static void compute_offsets();
665
666 public:
667 // Allocation
668 static Handle create(TRAPS);
669
670 // Accessors
671 static oop clazz(oop reflect);
672 static void set_clazz(oop reflect, oop value);
673
674 static oop parameter_types(oop constructor);
675 static void set_parameter_types(oop constructor, oop value);
676
677 static oop exception_types(oop constructor);
678 static void set_exception_types(oop constructor, oop value);
679
680 static int slot(oop reflect);
681 static void set_slot(oop reflect, int value);
682
683 static int modifiers(oop constructor);
684 static void set_modifiers(oop constructor, int value);
685
686 static bool has_signature_field();
687 static oop signature(oop constructor);
688 static void set_signature(oop constructor, oop value);
689
690 static bool has_annotations_field();
691 static oop annotations(oop constructor);
692 static void set_annotations(oop constructor, oop value);
693
694 static bool has_parameter_annotations_field();
695 static oop parameter_annotations(oop method);
696 static void set_parameter_annotations(oop method, oop value);
697
698 static bool has_type_annotations_field();
699 static oop type_annotations(oop constructor);
700 static void set_type_annotations(oop constructor, oop value);
701
702 // Debugging
703 friend class JavaClasses;
704 };
705
706
707 // Interface to java.lang.reflect.Field objects
708
709 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
710 private:
711 // Note that to reduce dependencies on the JDK we compute these
712 // offsets at run-time.
713 static int clazz_offset;
714 static int name_offset;
715 static int type_offset;
716 static int slot_offset;
717 static int modifiers_offset;
718 static int signature_offset;
719 static int annotations_offset;
720 static int type_annotations_offset;
721
722 static void compute_offsets();
723
724 public:
725 // Allocation
726 static Handle create(TRAPS);
727
728 // Accessors
729 static oop clazz(oop reflect);
730 static void set_clazz(oop reflect, oop value);
731
732 static oop name(oop field);
733 static void set_name(oop field, oop value);
734
735 static oop type(oop field);
736 static void set_type(oop field, oop value);
737
738 static int slot(oop reflect);
739 static void set_slot(oop reflect, int value);
740
741 static int modifiers(oop field);
742 static void set_modifiers(oop field, int value);
743
744 static bool has_signature_field();
745 static oop signature(oop constructor);
746 static void set_signature(oop constructor, oop value);
747
748 static bool has_annotations_field();
749 static oop annotations(oop constructor);
750 static void set_annotations(oop constructor, oop value);
751
752 static bool has_parameter_annotations_field();
753 static oop parameter_annotations(oop method);
754 static void set_parameter_annotations(oop method, oop value);
755
756 static bool has_annotation_default_field();
757 static oop annotation_default(oop method);
758 static void set_annotation_default(oop method, oop value);
759
760 static bool has_type_annotations_field();
761 static oop type_annotations(oop field);
762 static void set_type_annotations(oop field, oop value);
763
764 // Debugging
765 friend class JavaClasses;
766 };
767
768 class java_lang_reflect_Parameter {
769 private:
770 // Note that to reduce dependencies on the JDK we compute these
771 // offsets at run-time.
772 static int name_offset;
773 static int modifiers_offset;
774 static int index_offset;
775 static int executable_offset;
776
777 static void compute_offsets();
778
779 public:
780 // Allocation
781 static Handle create(TRAPS);
782
783 // Accessors
784 static oop name(oop field);
785 static void set_name(oop field, oop value);
786
787 static int index(oop reflect);
788 static void set_index(oop reflect, int value);
789
790 static int modifiers(oop reflect);
791 static void set_modifiers(oop reflect, int value);
792
793 static oop executable(oop constructor);
794 static void set_executable(oop constructor, oop value);
795
796 friend class JavaClasses;
797 };
798
799 // Interface to sun.reflect.ConstantPool objects
800 class sun_reflect_ConstantPool {
801 private:
802 // Note that to reduce dependencies on the JDK we compute these
803 // offsets at run-time.
804 static int _oop_offset;
805
806 static void compute_offsets();
807
808 public:
809 // Allocation
810 static Handle create(TRAPS);
811
812 // Accessors
813 static void set_cp(oop reflect, ConstantPool* value);
814 static int oop_offset() {
815 return _oop_offset;
816 }
817
818 static ConstantPool* get_cp(oop reflect);
819
820 // Debugging
821 friend class JavaClasses;
822 };
823
824 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects
825 class sun_reflect_UnsafeStaticFieldAccessorImpl {
826 private:
827 static int _base_offset;
828 static void compute_offsets();
829
830 public:
831 static int base_offset() {
832 return _base_offset;
833 }
834
835 // Debugging
836 friend class JavaClasses;
837 };
838
839 // Interface to java.lang primitive type boxing objects:
840 // - java.lang.Boolean
841 // - java.lang.Character
842 // - java.lang.Float
843 // - java.lang.Double
844 // - java.lang.Byte
845 // - java.lang.Short
846 // - java.lang.Integer
847 // - java.lang.Long
848
849 // This could be separated out into 8 individual classes.
850
851 class java_lang_boxing_object: AllStatic {
852 private:
853 enum {
854 hc_value_offset = 0
855 };
856 static int value_offset;
857 static int long_value_offset;
858
859 static oop initialize_and_allocate(BasicType type, TRAPS);
860 public:
861 // Allocation. Returns a boxed value, or NULL for invalid type.
862 static oop create(BasicType type, jvalue* value, TRAPS);
863 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
864 static BasicType get_value(oop box, jvalue* value);
865 static BasicType set_value(oop box, jvalue* value);
866 static BasicType basic_type(oop box);
867 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
868 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
869 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
870 static void print(BasicType type, jvalue* value, outputStream* st);
871
872 static int value_offset_in_bytes(BasicType type) {
873 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
874 value_offset;
875 }
876
877 // Debugging
878 friend class JavaClasses;
879 };
880
881
882
883 // Interface to java.lang.ref.Reference objects
884
885 class java_lang_ref_Reference: AllStatic {
886 public:
887 enum {
888 hc_referent_offset = 0,
889 hc_queue_offset = 1,
890 hc_next_offset = 2,
891 hc_discovered_offset = 3 // Is not last, see SoftRefs.
892 };
893 enum {
894 hc_static_lock_offset = 0,
895 hc_static_pending_offset = 1
896 };
897
898 static int referent_offset;
899 static int queue_offset;
900 static int next_offset;
901 static int discovered_offset;
902 static int static_lock_offset;
903 static int static_pending_offset;
904 static int number_of_fake_oop_fields;
905
906 // Accessors
907 static oop referent(oop ref) {
908 return ref->obj_field(referent_offset);
909 }
910 static void set_referent(oop ref, oop value) {
911 ref->obj_field_put(referent_offset, value);
912 }
913 static void set_referent_raw(oop ref, oop value) {
914 ref->obj_field_put_raw(referent_offset, value);
915 }
916 static HeapWord* referent_addr(oop ref) {
917 return ref->obj_field_addr<HeapWord>(referent_offset);
918 }
919 static oop next(oop ref) {
920 return ref->obj_field(next_offset);
921 }
922 static void set_next(oop ref, oop value) {
923 ref->obj_field_put(next_offset, value);
924 }
925 static void set_next_raw(oop ref, oop value) {
926 ref->obj_field_put_raw(next_offset, value);
927 }
928 static HeapWord* next_addr(oop ref) {
929 return ref->obj_field_addr<HeapWord>(next_offset);
930 }
931 static oop discovered(oop ref) {
932 return ref->obj_field(discovered_offset);
933 }
934 static void set_discovered(oop ref, oop value) {
935 ref->obj_field_put(discovered_offset, value);
936 }
937 static void set_discovered_raw(oop ref, oop value) {
938 ref->obj_field_put_raw(discovered_offset, value);
939 }
940 static HeapWord* discovered_addr(oop ref) {
941 return ref->obj_field_addr<HeapWord>(discovered_offset);
942 }
943 // Accessors for statics
944 static oop pending_list_lock();
945 static oop pending_list();
946
947 static HeapWord* pending_list_lock_addr();
948 static HeapWord* pending_list_addr();
949 };
950
951
952 // Interface to java.lang.ref.SoftReference objects
953
954 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
955 public:
956 enum {
957 // The timestamp is a long field and may need to be adjusted for alignment.
958 hc_timestamp_offset = hc_discovered_offset + 1
959 };
960 enum {
961 hc_static_clock_offset = 0
962 };
963
964 static int timestamp_offset;
965 static int static_clock_offset;
966
967 // Accessors
968 static jlong timestamp(oop ref);
969
970 // Accessors for statics
971 static jlong clock();
972 static void set_clock(jlong value);
973 };
974
975 // Interface to java.lang.invoke.MethodHandle objects
976
977 class MethodHandleEntry;
978
979 class java_lang_invoke_MethodHandle: AllStatic {
980 friend class JavaClasses;
981
982 private:
983 static int _type_offset; // the MethodType of this MH
984 static int _form_offset; // the LambdaForm of this MH
985
986 static void compute_offsets();
987
988 public:
989 // Accessors
990 static oop type(oop mh);
991 static void set_type(oop mh, oop mtype);
992
993 static oop form(oop mh);
994 static void set_form(oop mh, oop lform);
995
996 // Testers
997 static bool is_subclass(Klass* klass) {
998 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
999 }
1000 static bool is_instance(oop obj);
1001
1002 // Accessors for code generation:
1003 static int type_offset_in_bytes() { return _type_offset; }
1004 static int form_offset_in_bytes() { return _form_offset; }
1005 };
1006
1007 // Interface to java.lang.invoke.DirectMethodHandle objects
1008
1009 class java_lang_invoke_DirectMethodHandle: AllStatic {
1010 friend class JavaClasses;
1011
1012 private:
1013 static int _member_offset; // the MemberName of this DMH
1014
1015 static void compute_offsets();
1016
1017 public:
1018 // Accessors
1019 static oop member(oop mh);
1020
1021 // Testers
1022 static bool is_subclass(Klass* klass) {
1023 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1024 }
1025 static bool is_instance(oop obj);
1026
1027 // Accessors for code generation:
1028 static int member_offset_in_bytes() { return _member_offset; }
1029 };
1030
1031 // Interface to java.lang.invoke.LambdaForm objects
1032 // (These are a private interface for managing adapter code generation.)
1033
1034 class java_lang_invoke_LambdaForm: AllStatic {
1035 friend class JavaClasses;
1036
1037 private:
1038 static int _vmentry_offset; // type is MemberName
1039
1040 static void compute_offsets();
1041
1042 public:
1043 // Accessors
1044 static oop vmentry(oop lform);
1045 static void set_vmentry(oop lform, oop invoker);
1046
1047 // Testers
1048 static bool is_subclass(Klass* klass) {
1049 return SystemDictionary::LambdaForm_klass() != NULL &&
1050 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1051 }
1052 static bool is_instance(oop obj);
1053
1054 // Accessors for code generation:
1055 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1056 };
1057
1058
1059 // Interface to java.lang.invoke.MemberName objects
1060 // (These are a private interface for Java code to query the class hierarchy.)
1061
1062 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1063 macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \
1064 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) \
1065 macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false)
1066
1067 class java_lang_invoke_MemberName: AllStatic {
1068 friend class JavaClasses;
1069
1070 private:
1071 // From java.lang.invoke.MemberName:
1072 // private Class<?> clazz; // class in which the method is defined
1073 // private String name; // may be null if not yet materialized
1074 // private Object type; // may be null if not yet materialized
1075 // private int flags; // modifier bits; see reflect.Modifier
1076 // private intptr vmtarget; // VM-specific target value
1077 // private intptr_t vmindex; // member index within class or interface
1078 static int _clazz_offset;
1079 static int _name_offset;
1080 static int _type_offset;
1081 static int _flags_offset;
1082 static int _vmtarget_offset;
1083 static int _vmloader_offset;
1084 static int _vmindex_offset;
1085
1086 static void compute_offsets();
1087
1088 public:
1089 // Accessors
1090 static oop clazz(oop mname);
1091 static void set_clazz(oop mname, oop clazz);
1092
1093 static oop type(oop mname);
1094 static void set_type(oop mname, oop type);
1095
1096 static oop name(oop mname);
1097 static void set_name(oop mname, oop name);
1098
1099 static int flags(oop mname);
1100 static void set_flags(oop mname, int flags);
1101
1102 static Metadata* vmtarget(oop mname);
1103 static void set_vmtarget(oop mname, Metadata* target);
1104
1105 static intptr_t vmindex(oop mname);
1106 static void set_vmindex(oop mname, intptr_t index);
1107
1108 // Testers
1109 static bool is_subclass(Klass* klass) {
1110 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1111 }
1112 static bool is_instance(oop obj);
1113
1114 static bool is_method(oop obj);
1115
1116 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1117 enum {
1118 MN_IS_METHOD = 0x00010000, // method (not constructor)
1119 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1120 MN_IS_FIELD = 0x00040000, // field
1121 MN_IS_TYPE = 0x00080000, // nested type
1122 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1123 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1124 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1125 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1126 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1127 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1128 };
1129
1130 // Accessors for code generation:
1131 static int clazz_offset_in_bytes() { return _clazz_offset; }
1132 static int type_offset_in_bytes() { return _type_offset; }
1133 static int name_offset_in_bytes() { return _name_offset; }
1134 static int flags_offset_in_bytes() { return _flags_offset; }
1135 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1136 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1137 };
1138
1139
1140 // Interface to java.lang.invoke.MethodType objects
1141
1142 class java_lang_invoke_MethodType: AllStatic {
1143 friend class JavaClasses;
1144
1145 private:
1146 static int _rtype_offset;
1147 static int _ptypes_offset;
1148
1149 static void compute_offsets();
1150
1151 public:
1152 // Accessors
1153 static oop rtype(oop mt);
1154 static objArrayOop ptypes(oop mt);
1155
1156 static oop ptype(oop mt, int index);
1157 static int ptype_count(oop mt);
1158
1159 static int ptype_slot_count(oop mt); // extra counts for long/double
1160 static int rtype_slot_count(oop mt); // extra counts for long/double
1161
1162 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1163 static void print_signature(oop mt, outputStream* st);
1164
1165 static bool is_instance(oop obj);
1166
1167 static bool equals(oop mt1, oop mt2);
1168
1169 // Accessors for code generation:
1170 static int rtype_offset_in_bytes() { return _rtype_offset; }
1171 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1172 };
1173
1174
1175 // Interface to java.lang.invoke.CallSite objects
1176
1177 class java_lang_invoke_CallSite: AllStatic {
1178 friend class JavaClasses;
1179
1180 private:
1181 static int _target_offset;
1182 static int _context_offset;
1183
1184 static void compute_offsets();
1185
1186 public:
1187 // Accessors
1188 static oop target( oop site);
1189 static void set_target( oop site, oop target);
1190 static void set_target_volatile( oop site, oop target);
1191
1192 static oop context(oop site);
1193
1194 // Testers
1195 static bool is_subclass(Klass* klass) {
1196 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1197 }
1198 static bool is_instance(oop obj);
1199
1200 // Accessors for code generation:
1201 static int target_offset_in_bytes() { return _target_offset; }
1202 };
1203
1204 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1205
1206 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1207 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false)
1208
1209 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1210 friend class JavaClasses;
1211
1212 private:
1213 static int _vmdependencies_offset;
1214
1215 static void compute_offsets();
1216
1217 public:
1218 // Accessors
1219 static nmethodBucket* vmdependencies(oop context);
1220 static void set_vmdependencies(oop context, nmethodBucket* bucket);
1221
1222 // Testers
1223 static bool is_subclass(Klass* klass) {
1224 return klass->is_subclass_of(SystemDictionary::Context_klass());
1225 }
1226 static bool is_instance(oop obj);
1227 };
1228
1229 // Interface to java.security.AccessControlContext objects
1230
1231 class java_security_AccessControlContext: AllStatic {
1232 private:
1233 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1234 // so we compute the offsets at startup rather than hard-wiring them.
1235 static int _context_offset;
1236 static int _privilegedContext_offset;
1237 static int _isPrivileged_offset;
1238 static int _isAuthorized_offset;
1239
1240 static void compute_offsets();
1241 public:
1242 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1243
1244 static bool is_authorized(Handle context);
1245
1246 // Debugging/initialization
1247 friend class JavaClasses;
1248 };
1249
1250
1251 // Interface to java.lang.ClassLoader objects
1252
1253 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1254 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1255
1256 class java_lang_ClassLoader : AllStatic {
1257 private:
1258 // The fake offsets are added by the class loader when java.lang.Class is loaded
1259 enum {
1260 hc_parent_offset = 0
1261 };
1262 static int _loader_data_offset;
1263 static bool offsets_computed;
1264 static int parent_offset;
1265 static int parallelCapable_offset;
1266
1267 public:
1268 static void compute_offsets();
1269
1270 static ClassLoaderData** loader_data_addr(oop loader);
1271 static ClassLoaderData* loader_data(oop loader);
1272
1273 static oop parent(oop loader);
1274 static bool isAncestor(oop loader, oop cl);
1275
1276 // Support for parallelCapable field
1277 static bool parallelCapable(oop the_class_mirror);
1278
1279 static bool is_trusted_loader(oop loader);
1280
1281 // Fix for 4474172
1282 static oop non_reflection_class_loader(oop loader);
1283
1284 // Testers
1285 static bool is_subclass(Klass* klass) {
1286 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1287 }
1288 static bool is_instance(oop obj);
1289
1290 // Debugging
1291 friend class JavaClasses;
1292 friend class ClassFileParser; // access to number_of_fake_fields
1293 };
1294
1295
1296 // Interface to java.lang.System objects
1297
1298 class java_lang_System : AllStatic {
1299 private:
1300 enum {
1301 hc_static_in_offset = 0,
1302 hc_static_out_offset = 1,
1303 hc_static_err_offset = 2,
1304 hc_static_security_offset = 3
1305 };
1306
1307 static int static_in_offset;
1308 static int static_out_offset;
1309 static int static_err_offset;
1310 static int static_security_offset;
1311
1312 public:
1313 static int in_offset_in_bytes();
1314 static int out_offset_in_bytes();
1315 static int err_offset_in_bytes();
1316
1317 static bool has_security_manager();
1318
1319 // Debugging
1320 friend class JavaClasses;
1321 };
1322
1323
1324 // Interface to java.lang.StackTraceElement objects
1325
1326 class java_lang_StackTraceElement: AllStatic {
1327 private:
1328 enum {
1329 hc_declaringClass_offset = 0,
1330 hc_methodName_offset = 1,
1331 hc_fileName_offset = 2,
1332 hc_lineNumber_offset = 3
1333 };
1334
1335 static int declaringClass_offset;
1336 static int methodName_offset;
1337 static int fileName_offset;
1338 static int lineNumber_offset;
1339
1340 public:
1341 // Setters
1342 static void set_declaringClass(oop element, oop value);
1343 static void set_methodName(oop element, oop value);
1344 static void set_fileName(oop element, oop value);
1345 static void set_lineNumber(oop element, int value);
1346
1347 // Create an instance of StackTraceElement
1348 static oop create(Handle mirror, int method, int version, int bci, int cpref, TRAPS);
1349 static oop create(methodHandle method, int bci, TRAPS);
1350
1351 // Debugging
1352 friend class JavaClasses;
1353 };
1354
1355
1356 // Interface to java.lang.AssertionStatusDirectives objects
1357
1358 class java_lang_AssertionStatusDirectives: AllStatic {
1359 private:
1360 enum {
1361 hc_classes_offset,
1362 hc_classEnabled_offset,
1363 hc_packages_offset,
1364 hc_packageEnabled_offset,
1365 hc_deflt_offset
1366 };
1367
1368 static int classes_offset;
1369 static int classEnabled_offset;
1370 static int packages_offset;
1371 static int packageEnabled_offset;
1372 static int deflt_offset;
1373
1374 public:
1375 // Setters
1376 static void set_classes(oop obj, oop val);
1377 static void set_classEnabled(oop obj, oop val);
1378 static void set_packages(oop obj, oop val);
1379 static void set_packageEnabled(oop obj, oop val);
1380 static void set_deflt(oop obj, bool val);
1381 // Debugging
1382 friend class JavaClasses;
1383 };
1384
1385
1386 class java_nio_Buffer: AllStatic {
1387 private:
1388 static int _limit_offset;
1389
1390 public:
1391 static int limit_offset();
1392 static void compute_offsets();
1393 };
1394
1395 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1396 private:
1397 static int _owner_offset;
1398 public:
1399 static void initialize(TRAPS);
1400 static oop get_owner_threadObj(oop obj);
1401 };
1402
1403 // Use to declare fields that need to be injected into Java classes
1404 // for the JVM to use. The name_index and signature_index are
1405 // declared in vmSymbols. The may_be_java flag is used to declare
1406 // fields that might already exist in Java but should be injected if
1407 // they don't. Otherwise the field is unconditionally injected and
1408 // the JVM uses the injected one. This is to ensure that name
1409 // collisions don't occur. In general may_be_java should be false
1410 // unless there's a good reason.
1411
1412 class InjectedField {
1413 public:
1414 const SystemDictionary::WKID klass_id;
1415 const vmSymbols::SID name_index;
1416 const vmSymbols::SID signature_index;
1417 const bool may_be_java;
1418
1419
1420 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1421 Symbol* name() const { return lookup_symbol(name_index); }
1422 Symbol* signature() const { return lookup_symbol(signature_index); }
1423
1424 int compute_offset();
1425
1426 // Find the Symbol for this index
1427 static Symbol* lookup_symbol(int symbol_index) {
1428 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1429 }
1430 };
1431
1432 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1433 klass##_##name##_enum,
1434
1435 #define ALL_INJECTED_FIELDS(macro) \
1436 CLASS_INJECTED_FIELDS(macro) \
1437 CLASSLOADER_INJECTED_FIELDS(macro) \
1438 MEMBERNAME_INJECTED_FIELDS(macro) \
1439 CALLSITECONTEXT_INJECTED_FIELDS(macro)
1440
1441 // Interface to hard-coded offset checking
1442
1443 class JavaClasses : AllStatic {
1444 private:
1445
1446 static InjectedField _injected_fields[];
1447
1448 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1449 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1450 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1451
1452 public:
1453 enum InjectedFieldID {
1454 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1455 MAX_enum
1456 };
1457
1458 static int compute_injected_offset(InjectedFieldID id);
1459
1460 static void compute_hard_coded_offsets();
1461 static void compute_offsets();
1462 static void check_offsets() PRODUCT_RETURN;
1463
1464 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1465 };
1466
1467 #undef DECLARE_INJECTED_FIELD_ENUM
1468
1469 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP