1 /*
2 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_VM_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_VM_CLASSFILE_JAVACLASSES_HPP
27
28 #include "classfile/systemDictionary.hpp"
29 #include "jvmtifiles/jvmti.h"
30 #include "oops/oop.hpp"
31 #include "runtime/os.hpp"
32 #include "utilities/utf8.hpp"
33
34 // Interface for manipulating the basic Java classes.
35 //
36 // All dependencies on layout of actual Java classes should be kept here.
37 // If the layout of any of the classes above changes the offsets must be adjusted.
38 //
39 // For most classes we hardwire the offsets for performance reasons. In certain
40 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
41 // startup since the layout here differs between JDK1.2 and JDK1.3.
42 //
43 // Note that fields (static and non-static) are arranged with oops before non-oops
44 // on a per class basis. The offsets below have to reflect this ordering.
45 //
46 // When editing the layouts please update the check_offset verification code
47 // correspondingly. The names in the enums must be identical to the actual field
48 // names in order for the verification code to work.
49
50
51 // Interface to java.lang.String objects
52
53 class java_lang_String : AllStatic {
54 private:
55 static int value_offset;
56 static int hash_offset;
57 static int coder_offset;
58
59 static bool initialized;
60
61 static Handle basic_create(int length, bool byte_arr, TRAPS);
62
63 static inline void set_coder(oop string, jbyte coder);
64
65 public:
66
67 // Coders
68 enum Coder {
69 CODER_LATIN1 = 0,
70 CODER_UTF16 = 1
71 };
72
73 static void compute_offsets();
74
75 // Instance creation
76 static Handle create_from_unicode(jchar* unicode, int len, TRAPS);
77 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS);
78 static Handle create_from_str(const char* utf8_str, TRAPS);
79 static oop create_oop_from_str(const char* utf8_str, TRAPS);
80 static Handle create_from_symbol(Symbol* symbol, TRAPS);
81 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
82 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
83
84 static bool has_hash_field() {
85 assert(initialized, "Must be initialized");
86 return (hash_offset > 0);
87 }
88 static bool has_coder_field() {
89 assert(initialized, "Must be initialized");
90 return (coder_offset > 0);
91 }
92
93 static void set_compact_strings(bool value);
94
95 static int value_offset_in_bytes() {
96 assert(initialized && (value_offset > 0), "Must be initialized");
97 return value_offset;
98 }
99 static int hash_offset_in_bytes() {
100 assert(initialized && (hash_offset > 0), "Must be initialized");
101 return hash_offset;
102 }
103 static int coder_offset_in_bytes() {
104 assert(initialized && (coder_offset > 0), "Must be initialized");
105 return coder_offset;
106 }
107
108 static inline void set_value_raw(oop string, typeArrayOop buffer);
109 static inline void set_value(oop string, typeArrayOop buffer);
110 static inline void set_hash(oop string, unsigned int hash);
111
112 // Accessors
113 static inline typeArrayOop value(oop java_string);
114 static inline unsigned int hash(oop java_string);
115 static inline bool is_latin1(oop java_string);
116 static inline int length(oop java_string);
117 static int utf8_length(oop java_string);
118
119 // String converters
120 static char* as_utf8_string(oop java_string);
121 static char* as_utf8_string(oop java_string, char* buf, int buflen);
122 static char* as_utf8_string(oop java_string, int start, int len);
123 static char* as_utf8_string(oop java_string, int start, int len, char* buf, int buflen);
124 static char* as_platform_dependent_str(Handle java_string, TRAPS);
125 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
126 // produce an ascii string with all other values quoted using \u####
127 static char* as_quoted_ascii(oop java_string);
128
129 // Compute the hash value for a java.lang.String object which would
130 // contain the characters passed in.
131 //
132 // As the hash value used by the String object itself, in
133 // String.hashCode(). This value is normally calculated in Java code
134 // in the String.hashCode method(), but is precomputed for String
135 // objects in the shared archive file.
136 // hash P(31) from Kernighan & Ritchie
137 //
138 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
139 static unsigned int hash_code(const jchar* s, int len) {
140 unsigned int h = 0;
141 while (len-- > 0) {
142 h = 31*h + (unsigned int) *s;
143 s++;
144 }
145 return h;
146 }
147
148 static unsigned int hash_code(const jbyte* s, int len) {
149 unsigned int h = 0;
150 while (len-- > 0) {
151 h = 31*h + (((unsigned int) *s) & 0xFF);
152 s++;
153 }
154 return h;
155 }
156
157 static unsigned int hash_code(oop java_string);
158 static unsigned int latin1_hash_code(typeArrayOop value, int len);
159
160 // This is the string hash code used by the StringTable, which may be
161 // the same as String.hashCode or an alternate hash code.
162 static unsigned int hash_string(oop java_string);
163
164 static bool equals(oop java_string, jchar* chars, int len);
165 static bool equals(oop str1, oop str2);
166
167 // Conversion between '.' and '/' formats
168 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
169 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
170
171 // Conversion
172 static Symbol* as_symbol(Handle java_string, TRAPS);
173 static Symbol* as_symbol_or_null(oop java_string);
174
175 // Testers
176 static bool is_instance(oop obj);
177 static inline bool is_instance_inlined(oop obj);
178
179 // Debugging
180 static void print(oop java_string, outputStream* st);
181 friend class JavaClasses;
182 friend class StringTable;
183 };
184
185
186 // Interface to java.lang.Class objects
187
188 #define CLASS_INJECTED_FIELDS(macro) \
189 macro(java_lang_Class, klass, intptr_signature, false) \
190 macro(java_lang_Class, array_klass, intptr_signature, false) \
191 macro(java_lang_Class, oop_size, int_signature, false) \
192 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
193 macro(java_lang_Class, protection_domain, object_signature, false) \
194 macro(java_lang_Class, signers, object_signature, false)
195
196 class java_lang_Class : AllStatic {
197 friend class VMStructs;
198 friend class JVMCIVMStructs;
199
200 private:
201 // The fake offsets are added by the class loader when java.lang.Class is loaded
202
203 static int _klass_offset;
204 static int _array_klass_offset;
205
206 static int _oop_size_offset;
207 static int _static_oop_field_count_offset;
208
209 static int _protection_domain_offset;
210 static int _init_lock_offset;
211 static int _signers_offset;
212 static int _class_loader_offset;
213 static int _component_mirror_offset;
214
215 static bool offsets_computed;
216 static int classRedefinedCount_offset;
217
218 static GrowableArray<Klass*>* _fixup_mirror_list;
219
220 static void set_init_lock(oop java_class, oop init_lock);
221 static void set_protection_domain(oop java_class, oop protection_domain);
222 static void set_class_loader(oop java_class, oop class_loader);
223 static void set_component_mirror(oop java_class, oop comp_mirror);
224 static void initialize_mirror_fields(KlassHandle k, Handle mirror, Handle protection_domain, TRAPS);
225 public:
226 static void compute_offsets();
227
228 // Instance creation
229 static void create_mirror(KlassHandle k, Handle class_loader,
230 Handle protection_domain, TRAPS);
231 static void fixup_mirror(KlassHandle k, TRAPS);
232 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
233 // Conversion
234 static Klass* as_Klass(oop java_class);
235 static void set_klass(oop java_class, Klass* klass);
236 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
237 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) {
238 Klass* refk_oop = NULL;
239 BasicType result = as_BasicType(java_class, &refk_oop);
240 (*reference_klass) = KlassHandle(refk_oop);
241 return result;
242 }
243 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
244 static void print_signature(oop java_class, outputStream *st);
245 static const char* as_external_name(oop java_class);
246 // Testing
247 static bool is_instance(oop obj);
248
249 static bool is_primitive(oop java_class);
250 static BasicType primitive_type(oop java_class);
251 static oop primitive_mirror(BasicType t);
252 // JVM_NewArray support
253 static Klass* array_klass(oop java_class);
254 static void set_array_klass(oop java_class, Klass* klass);
255 // compiler support for class operations
256 static int klass_offset_in_bytes() { return _klass_offset; }
257 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
258 // Support for classRedefinedCount field
259 static int classRedefinedCount(oop the_class_mirror);
260 static void set_classRedefinedCount(oop the_class_mirror, int value);
261
262 // Support for embedded per-class oops
263 static oop protection_domain(oop java_class);
264 static oop init_lock(oop java_class);
265 static oop component_mirror(oop java_class);
266 static objArrayOop signers(oop java_class);
267 static void set_signers(oop java_class, objArrayOop signers);
268
269 static oop class_loader(oop java_class);
270
271 static int oop_size(oop java_class);
272 static void set_oop_size(oop java_class, int size);
273 static int static_oop_field_count(oop java_class);
274 static void set_static_oop_field_count(oop java_class, int size);
275
276 static GrowableArray<Klass*>* fixup_mirror_list() {
277 return _fixup_mirror_list;
278 }
279 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
280 _fixup_mirror_list = v;
281 }
282 // Debugging
283 friend class JavaClasses;
284 friend class InstanceKlass; // verification code accesses offsets
285 friend class ClassFileParser; // access to number_of_fake_fields
286 };
287
288 // Interface to java.lang.Thread objects
289
290 class java_lang_Thread : AllStatic {
291 private:
292 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
293 // so we compute the offsets at startup rather than hard-wiring them.
294 static int _name_offset;
295 static int _group_offset;
296 static int _contextClassLoader_offset;
297 static int _inheritedAccessControlContext_offset;
298 static int _priority_offset;
299 static int _eetop_offset;
300 static int _daemon_offset;
301 static int _stillborn_offset;
302 static int _stackSize_offset;
303 static int _tid_offset;
304 static int _thread_status_offset;
305 static int _park_blocker_offset;
306 static int _park_event_offset ;
307
308 static void compute_offsets();
309
310 public:
311 // Instance creation
312 static oop create();
313 // Returns the JavaThread associated with the thread obj
314 static JavaThread* thread(oop java_thread);
315 // Set JavaThread for instance
316 static void set_thread(oop java_thread, JavaThread* thread);
317 // Name
318 static oop name(oop java_thread);
319 static void set_name(oop java_thread, oop name);
320 // Priority
321 static ThreadPriority priority(oop java_thread);
322 static void set_priority(oop java_thread, ThreadPriority priority);
323 // Thread group
324 static oop threadGroup(oop java_thread);
325 // Stillborn
326 static bool is_stillborn(oop java_thread);
327 static void set_stillborn(oop java_thread);
328 // Alive (NOTE: this is not really a field, but provides the correct
329 // definition without doing a Java call)
330 static bool is_alive(oop java_thread);
331 // Daemon
332 static bool is_daemon(oop java_thread);
333 static void set_daemon(oop java_thread);
334 // Context ClassLoader
335 static oop context_class_loader(oop java_thread);
336 // Control context
337 static oop inherited_access_control_context(oop java_thread);
338 // Stack size hint
339 static jlong stackSize(oop java_thread);
340 // Thread ID
341 static jlong thread_id(oop java_thread);
342
343 // Blocker object responsible for thread parking
344 static oop park_blocker(oop java_thread);
345
346 // Pointer to type-stable park handler, encoded as jlong.
347 // Should be set when apparently null
348 // For details, see unsafe.cpp Unsafe_Unpark
349 static jlong park_event(oop java_thread);
350 static bool set_park_event(oop java_thread, jlong ptr);
351
352 // Java Thread Status for JVMTI and M&M use.
353 // This thread status info is saved in threadStatus field of
354 // java.lang.Thread java class.
355 enum ThreadStatus {
356 NEW = 0,
357 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
358 JVMTI_THREAD_STATE_RUNNABLE,
359 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
360 JVMTI_THREAD_STATE_WAITING +
361 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
362 JVMTI_THREAD_STATE_SLEEPING,
363 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
364 JVMTI_THREAD_STATE_WAITING +
365 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
366 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
367 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
368 JVMTI_THREAD_STATE_WAITING +
369 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
370 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
371 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
372 JVMTI_THREAD_STATE_WAITING +
373 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
374 JVMTI_THREAD_STATE_PARKED,
375 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
376 JVMTI_THREAD_STATE_WAITING +
377 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
378 JVMTI_THREAD_STATE_PARKED,
379 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
380 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
381 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
382 };
383 // Write thread status info to threadStatus field of java.lang.Thread.
384 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
385 // Read thread status info from threadStatus field of java.lang.Thread.
386 static ThreadStatus get_thread_status(oop java_thread_oop);
387
388 static const char* thread_status_name(oop java_thread_oop);
389
390 // Debugging
391 friend class JavaClasses;
392 };
393
394 // Interface to java.lang.ThreadGroup objects
395
396 class java_lang_ThreadGroup : AllStatic {
397 private:
398 static int _parent_offset;
399 static int _name_offset;
400 static int _threads_offset;
401 static int _groups_offset;
402 static int _maxPriority_offset;
403 static int _destroyed_offset;
404 static int _daemon_offset;
405 static int _vmAllowSuspension_offset;
406 static int _nthreads_offset;
407 static int _ngroups_offset;
408
409 static void compute_offsets();
410
411 public:
412 // parent ThreadGroup
413 static oop parent(oop java_thread_group);
414 // name
415 static const char* name(oop java_thread_group);
416 // ("name as oop" accessor is not necessary)
417 // Number of threads in group
418 static int nthreads(oop java_thread_group);
419 // threads
420 static objArrayOop threads(oop java_thread_group);
421 // Number of threads in group
422 static int ngroups(oop java_thread_group);
423 // groups
424 static objArrayOop groups(oop java_thread_group);
425 // maxPriority in group
426 static ThreadPriority maxPriority(oop java_thread_group);
427 // Destroyed
428 static bool is_destroyed(oop java_thread_group);
429 // Daemon
430 static bool is_daemon(oop java_thread_group);
431 // vmAllowSuspension
432 static bool is_vmAllowSuspension(oop java_thread_group);
433 // Debugging
434 friend class JavaClasses;
435 };
436
437
438
439 // Interface to java.lang.Throwable objects
440
441 class java_lang_Throwable: AllStatic {
442 friend class BacktraceBuilder;
443 friend class BacktraceIterator;
444
445 private:
446 // Offsets
447 enum {
448 hc_backtrace_offset = 0,
449 hc_detailMessage_offset = 1,
450 hc_cause_offset = 2, // New since 1.4
451 hc_stackTrace_offset = 3 // New since 1.4
452 };
453 enum {
454 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7
455 };
456 // Trace constants
457 enum {
458 trace_methods_offset = 0,
459 trace_bcis_offset = 1,
460 trace_mirrors_offset = 2,
461 trace_cprefs_offset = 3,
462 trace_next_offset = 4,
463 trace_size = 5,
464 trace_chunk_size = 32
465 };
466
467 static int backtrace_offset;
468 static int detailMessage_offset;
469 static int stackTrace_offset;
470 static int depth_offset;
471 static int static_unassigned_stacktrace_offset;
472
473 // StackTrace (programmatic access, new since 1.4)
474 static void clear_stacktrace(oop throwable);
475 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
476 static void set_stacktrace(oop throwable, oop st_element_array);
477 static oop unassigned_stacktrace();
478
479 public:
480 // Backtrace
481 static oop backtrace(oop throwable);
482 static void set_backtrace(oop throwable, oop value);
483 static int depth(oop throwable);
484 static void set_depth(oop throwable, int value);
485 // Needed by JVMTI to filter out this internal field.
486 static int get_backtrace_offset() { return backtrace_offset;}
487 static int get_detailMessage_offset() { return detailMessage_offset;}
488 // Message
489 static oop message(Handle throwable);
490 static void set_message(oop throwable, oop value);
491 static Symbol* detail_message(oop throwable);
492 static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
493 static void print_stack_usage(Handle stream);
494
495 static void compute_offsets();
496
497 // Allocate space for backtrace (created but stack trace not filled in)
498 static void allocate_backtrace(Handle throwable, TRAPS);
499 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
500 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
501 // Fill in current stack trace, can cause GC
502 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
503 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
504 // Programmatic access to stack trace
505 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
506 // Printing
507 static void print(Handle throwable, outputStream* st);
508 static void print_stack_trace(Handle throwable, outputStream* st);
509 static void java_printStackTrace(Handle throwable, TRAPS);
510 // Debugging
511 friend class JavaClasses;
512 };
513
514
515 // Interface to java.lang.reflect.AccessibleObject objects
516
517 class java_lang_reflect_AccessibleObject: AllStatic {
518 private:
519 // Note that to reduce dependencies on the JDK we compute these
520 // offsets at run-time.
521 static int override_offset;
522
523 static void compute_offsets();
524
525 public:
526 // Accessors
527 static jboolean override(oop reflect);
528 static void set_override(oop reflect, jboolean value);
529
530 // Debugging
531 friend class JavaClasses;
532 };
533
534
535 // Interface to java.lang.reflect.Method objects
536
537 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
538 private:
539 // Note that to reduce dependencies on the JDK we compute these
540 // offsets at run-time.
541 static int clazz_offset;
542 static int name_offset;
543 static int returnType_offset;
544 static int parameterTypes_offset;
545 static int exceptionTypes_offset;
546 static int slot_offset;
547 static int modifiers_offset;
548 static int signature_offset;
549 static int annotations_offset;
550 static int parameter_annotations_offset;
551 static int annotation_default_offset;
552 static int type_annotations_offset;
553
554 static void compute_offsets();
555
556 public:
557 // Allocation
558 static Handle create(TRAPS);
559
560 // Accessors
561 static oop clazz(oop reflect);
562 static void set_clazz(oop reflect, oop value);
563
564 static oop name(oop method);
565 static void set_name(oop method, oop value);
566
567 static oop return_type(oop method);
568 static void set_return_type(oop method, oop value);
569
570 static oop parameter_types(oop method);
571 static void set_parameter_types(oop method, oop value);
572
573 static oop exception_types(oop method);
574 static void set_exception_types(oop method, oop value);
575
576 static int slot(oop reflect);
577 static void set_slot(oop reflect, int value);
578
579 static int modifiers(oop method);
580 static void set_modifiers(oop method, int value);
581
582 static bool has_signature_field();
583 static oop signature(oop method);
584 static void set_signature(oop method, oop value);
585
586 static bool has_annotations_field();
587 static oop annotations(oop method);
588 static void set_annotations(oop method, oop value);
589
590 static bool has_parameter_annotations_field();
591 static oop parameter_annotations(oop method);
592 static void set_parameter_annotations(oop method, oop value);
593
594 static bool has_annotation_default_field();
595 static oop annotation_default(oop method);
596 static void set_annotation_default(oop method, oop value);
597
598 static bool has_type_annotations_field();
599 static oop type_annotations(oop method);
600 static void set_type_annotations(oop method, oop value);
601
602 // Debugging
603 friend class JavaClasses;
604 };
605
606
607 // Interface to java.lang.reflect.Constructor objects
608
609 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
610 private:
611 // Note that to reduce dependencies on the JDK we compute these
612 // offsets at run-time.
613 static int clazz_offset;
614 static int parameterTypes_offset;
615 static int exceptionTypes_offset;
616 static int slot_offset;
617 static int modifiers_offset;
618 static int signature_offset;
619 static int annotations_offset;
620 static int parameter_annotations_offset;
621 static int type_annotations_offset;
622
623 static void compute_offsets();
624
625 public:
626 // Allocation
627 static Handle create(TRAPS);
628
629 // Accessors
630 static oop clazz(oop reflect);
631 static void set_clazz(oop reflect, oop value);
632
633 static oop parameter_types(oop constructor);
634 static void set_parameter_types(oop constructor, oop value);
635
636 static oop exception_types(oop constructor);
637 static void set_exception_types(oop constructor, oop value);
638
639 static int slot(oop reflect);
640 static void set_slot(oop reflect, int value);
641
642 static int modifiers(oop constructor);
643 static void set_modifiers(oop constructor, int value);
644
645 static bool has_signature_field();
646 static oop signature(oop constructor);
647 static void set_signature(oop constructor, oop value);
648
649 static bool has_annotations_field();
650 static oop annotations(oop constructor);
651 static void set_annotations(oop constructor, oop value);
652
653 static bool has_parameter_annotations_field();
654 static oop parameter_annotations(oop method);
655 static void set_parameter_annotations(oop method, oop value);
656
657 static bool has_type_annotations_field();
658 static oop type_annotations(oop constructor);
659 static void set_type_annotations(oop constructor, oop value);
660
661 // Debugging
662 friend class JavaClasses;
663 };
664
665
666 // Interface to java.lang.reflect.Field objects
667
668 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
669 private:
670 // Note that to reduce dependencies on the JDK we compute these
671 // offsets at run-time.
672 static int clazz_offset;
673 static int name_offset;
674 static int type_offset;
675 static int slot_offset;
676 static int modifiers_offset;
677 static int signature_offset;
678 static int annotations_offset;
679 static int type_annotations_offset;
680
681 static void compute_offsets();
682
683 public:
684 // Allocation
685 static Handle create(TRAPS);
686
687 // Accessors
688 static oop clazz(oop reflect);
689 static void set_clazz(oop reflect, oop value);
690
691 static oop name(oop field);
692 static void set_name(oop field, oop value);
693
694 static oop type(oop field);
695 static void set_type(oop field, oop value);
696
697 static int slot(oop reflect);
698 static void set_slot(oop reflect, int value);
699
700 static int modifiers(oop field);
701 static void set_modifiers(oop field, int value);
702
703 static bool has_signature_field();
704 static oop signature(oop constructor);
705 static void set_signature(oop constructor, oop value);
706
707 static bool has_annotations_field();
708 static oop annotations(oop constructor);
709 static void set_annotations(oop constructor, oop value);
710
711 static bool has_parameter_annotations_field();
712 static oop parameter_annotations(oop method);
713 static void set_parameter_annotations(oop method, oop value);
714
715 static bool has_annotation_default_field();
716 static oop annotation_default(oop method);
717 static void set_annotation_default(oop method, oop value);
718
719 static bool has_type_annotations_field();
720 static oop type_annotations(oop field);
721 static void set_type_annotations(oop field, oop value);
722
723 // Debugging
724 friend class JavaClasses;
725 };
726
727 class java_lang_reflect_Parameter {
728 private:
729 // Note that to reduce dependencies on the JDK we compute these
730 // offsets at run-time.
731 static int name_offset;
732 static int modifiers_offset;
733 static int index_offset;
734 static int executable_offset;
735
736 static void compute_offsets();
737
738 public:
739 // Allocation
740 static Handle create(TRAPS);
741
742 // Accessors
743 static oop name(oop field);
744 static void set_name(oop field, oop value);
745
746 static int index(oop reflect);
747 static void set_index(oop reflect, int value);
748
749 static int modifiers(oop reflect);
750 static void set_modifiers(oop reflect, int value);
751
752 static oop executable(oop constructor);
753 static void set_executable(oop constructor, oop value);
754
755 friend class JavaClasses;
756 };
757
758 // Interface to sun.reflect.ConstantPool objects
759 class sun_reflect_ConstantPool {
760 private:
761 // Note that to reduce dependencies on the JDK we compute these
762 // offsets at run-time.
763 static int _oop_offset;
764
765 static void compute_offsets();
766
767 public:
768 // Allocation
769 static Handle create(TRAPS);
770
771 // Accessors
772 static void set_cp(oop reflect, ConstantPool* value);
773 static int oop_offset() {
774 return _oop_offset;
775 }
776
777 static ConstantPool* get_cp(oop reflect);
778
779 // Debugging
780 friend class JavaClasses;
781 };
782
783 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects
784 class sun_reflect_UnsafeStaticFieldAccessorImpl {
785 private:
786 static int _base_offset;
787 static void compute_offsets();
788
789 public:
790 static int base_offset() {
791 return _base_offset;
792 }
793
794 // Debugging
795 friend class JavaClasses;
796 };
797
798 // Interface to java.lang primitive type boxing objects:
799 // - java.lang.Boolean
800 // - java.lang.Character
801 // - java.lang.Float
802 // - java.lang.Double
803 // - java.lang.Byte
804 // - java.lang.Short
805 // - java.lang.Integer
806 // - java.lang.Long
807
808 // This could be separated out into 8 individual classes.
809
810 class java_lang_boxing_object: AllStatic {
811 private:
812 enum {
813 hc_value_offset = 0
814 };
815 static int value_offset;
816 static int long_value_offset;
817
818 static oop initialize_and_allocate(BasicType type, TRAPS);
819 public:
820 // Allocation. Returns a boxed value, or NULL for invalid type.
821 static oop create(BasicType type, jvalue* value, TRAPS);
822 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
823 static BasicType get_value(oop box, jvalue* value);
824 static BasicType set_value(oop box, jvalue* value);
825 static BasicType basic_type(oop box);
826 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
827 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
828 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
829 static void print(BasicType type, jvalue* value, outputStream* st);
830
831 static int value_offset_in_bytes(BasicType type) {
832 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
833 value_offset;
834 }
835
836 // Debugging
837 friend class JavaClasses;
838 };
839
840
841
842 // Interface to java.lang.ref.Reference objects
843
844 class java_lang_ref_Reference: AllStatic {
845 public:
846 enum {
847 hc_referent_offset = 0,
848 hc_queue_offset = 1,
849 hc_next_offset = 2,
850 hc_discovered_offset = 3 // Is not last, see SoftRefs.
851 };
852
853 static int referent_offset;
854 static int queue_offset;
855 static int next_offset;
856 static int discovered_offset;
857 static int number_of_fake_oop_fields;
858
859 // Accessors
860 static inline oop referent(oop ref);
861 static inline void set_referent(oop ref, oop value);
862 static inline void set_referent_raw(oop ref, oop value);
863 static inline HeapWord* referent_addr(oop ref);
864 static inline oop next(oop ref);
865 static inline void set_next(oop ref, oop value);
866 static inline void set_next_raw(oop ref, oop value);
867 static inline HeapWord* next_addr(oop ref);
868 static inline oop discovered(oop ref);
869 static inline void set_discovered(oop ref, oop value);
870 static inline void set_discovered_raw(oop ref, oop value);
871 static inline HeapWord* discovered_addr(oop ref);
872 };
873
874
875 // Interface to java.lang.ref.SoftReference objects
876
877 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
878 public:
879 enum {
880 // The timestamp is a long field and may need to be adjusted for alignment.
881 hc_timestamp_offset = hc_discovered_offset + 1
882 };
883 enum {
884 hc_static_clock_offset = 0
885 };
886
887 static int timestamp_offset;
888 static int static_clock_offset;
889
890 // Accessors
891 static jlong timestamp(oop ref);
892
893 // Accessors for statics
894 static jlong clock();
895 static void set_clock(jlong value);
896 };
897
898 // Interface to java.lang.invoke.MethodHandle objects
899
900 class MethodHandleEntry;
901
902 class java_lang_invoke_MethodHandle: AllStatic {
903 friend class JavaClasses;
904
905 private:
906 static int _type_offset; // the MethodType of this MH
907 static int _form_offset; // the LambdaForm of this MH
908
909 static void compute_offsets();
910
911 public:
912 // Accessors
913 static oop type(oop mh);
914 static void set_type(oop mh, oop mtype);
915
916 static oop form(oop mh);
917 static void set_form(oop mh, oop lform);
918
919 // Testers
920 static bool is_subclass(Klass* klass) {
921 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
922 }
923 static bool is_instance(oop obj);
924
925 // Accessors for code generation:
926 static int type_offset_in_bytes() { return _type_offset; }
927 static int form_offset_in_bytes() { return _form_offset; }
928 };
929
930 // Interface to java.lang.invoke.DirectMethodHandle objects
931
932 class java_lang_invoke_DirectMethodHandle: AllStatic {
933 friend class JavaClasses;
934
935 private:
936 static int _member_offset; // the MemberName of this DMH
937
938 static void compute_offsets();
939
940 public:
941 // Accessors
942 static oop member(oop mh);
943
944 // Testers
945 static bool is_subclass(Klass* klass) {
946 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
947 }
948 static bool is_instance(oop obj);
949
950 // Accessors for code generation:
951 static int member_offset_in_bytes() { return _member_offset; }
952 };
953
954 // Interface to java.lang.invoke.LambdaForm objects
955 // (These are a private interface for managing adapter code generation.)
956
957 class java_lang_invoke_LambdaForm: AllStatic {
958 friend class JavaClasses;
959
960 private:
961 static int _vmentry_offset; // type is MemberName
962
963 static void compute_offsets();
964
965 public:
966 // Accessors
967 static oop vmentry(oop lform);
968 static void set_vmentry(oop lform, oop invoker);
969
970 // Testers
971 static bool is_subclass(Klass* klass) {
972 return SystemDictionary::LambdaForm_klass() != NULL &&
973 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
974 }
975 static bool is_instance(oop obj);
976
977 // Accessors for code generation:
978 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
979 };
980
981
982 // Interface to java.lang.invoke.MemberName objects
983 // (These are a private interface for Java code to query the class hierarchy.)
984
985 #define MEMBERNAME_INJECTED_FIELDS(macro) \
986 macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \
987 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) \
988 macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false)
989
990 class java_lang_invoke_MemberName: AllStatic {
991 friend class JavaClasses;
992
993 private:
994 // From java.lang.invoke.MemberName:
995 // private Class<?> clazz; // class in which the method is defined
996 // private String name; // may be null if not yet materialized
997 // private Object type; // may be null if not yet materialized
998 // private int flags; // modifier bits; see reflect.Modifier
999 // private intptr vmtarget; // VM-specific target value
1000 // private intptr_t vmindex; // member index within class or interface
1001 static int _clazz_offset;
1002 static int _name_offset;
1003 static int _type_offset;
1004 static int _flags_offset;
1005 static int _vmtarget_offset;
1006 static int _vmloader_offset;
1007 static int _vmindex_offset;
1008
1009 static void compute_offsets();
1010
1011 public:
1012 // Accessors
1013 static oop clazz(oop mname);
1014 static void set_clazz(oop mname, oop clazz);
1015
1016 static oop type(oop mname);
1017 static void set_type(oop mname, oop type);
1018
1019 static oop name(oop mname);
1020 static void set_name(oop mname, oop name);
1021
1022 static int flags(oop mname);
1023 static void set_flags(oop mname, int flags);
1024
1025 static Metadata* vmtarget(oop mname);
1026 static void set_vmtarget(oop mname, Metadata* target);
1027
1028 static intptr_t vmindex(oop mname);
1029 static void set_vmindex(oop mname, intptr_t index);
1030
1031 // Testers
1032 static bool is_subclass(Klass* klass) {
1033 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1034 }
1035 static bool is_instance(oop obj);
1036
1037 static bool is_method(oop obj);
1038
1039 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1040 enum {
1041 MN_IS_METHOD = 0x00010000, // method (not constructor)
1042 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1043 MN_IS_FIELD = 0x00040000, // field
1044 MN_IS_TYPE = 0x00080000, // nested type
1045 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1046 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1047 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1048 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1049 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1050 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1051 };
1052
1053 // Accessors for code generation:
1054 static int clazz_offset_in_bytes() { return _clazz_offset; }
1055 static int type_offset_in_bytes() { return _type_offset; }
1056 static int name_offset_in_bytes() { return _name_offset; }
1057 static int flags_offset_in_bytes() { return _flags_offset; }
1058 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1059 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1060 };
1061
1062
1063 // Interface to java.lang.invoke.MethodType objects
1064
1065 class java_lang_invoke_MethodType: AllStatic {
1066 friend class JavaClasses;
1067
1068 private:
1069 static int _rtype_offset;
1070 static int _ptypes_offset;
1071
1072 static void compute_offsets();
1073
1074 public:
1075 // Accessors
1076 static oop rtype(oop mt);
1077 static objArrayOop ptypes(oop mt);
1078
1079 static oop ptype(oop mt, int index);
1080 static int ptype_count(oop mt);
1081
1082 static int ptype_slot_count(oop mt); // extra counts for long/double
1083 static int rtype_slot_count(oop mt); // extra counts for long/double
1084
1085 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1086 static void print_signature(oop mt, outputStream* st);
1087
1088 static bool is_instance(oop obj);
1089
1090 static bool equals(oop mt1, oop mt2);
1091
1092 // Accessors for code generation:
1093 static int rtype_offset_in_bytes() { return _rtype_offset; }
1094 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1095 };
1096
1097
1098 // Interface to java.lang.invoke.CallSite objects
1099
1100 class java_lang_invoke_CallSite: AllStatic {
1101 friend class JavaClasses;
1102
1103 private:
1104 static int _target_offset;
1105 static int _context_offset;
1106
1107 static void compute_offsets();
1108
1109 public:
1110 // Accessors
1111 static oop target( oop site);
1112 static void set_target( oop site, oop target);
1113 static void set_target_volatile( oop site, oop target);
1114
1115 static oop context(oop site);
1116
1117 // Testers
1118 static bool is_subclass(Klass* klass) {
1119 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1120 }
1121 static bool is_instance(oop obj);
1122
1123 // Accessors for code generation:
1124 static int target_offset_in_bytes() { return _target_offset; }
1125 };
1126
1127 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1128
1129 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1130 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false)
1131
1132 class DependencyContext;
1133
1134 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1135 friend class JavaClasses;
1136
1137 private:
1138 static int _vmdependencies_offset;
1139
1140 static void compute_offsets();
1141
1142 public:
1143 // Accessors
1144 static DependencyContext vmdependencies(oop context);
1145
1146 // Testers
1147 static bool is_subclass(Klass* klass) {
1148 return klass->is_subclass_of(SystemDictionary::Context_klass());
1149 }
1150 static bool is_instance(oop obj);
1151 };
1152
1153 // Interface to java.security.AccessControlContext objects
1154
1155 class java_security_AccessControlContext: AllStatic {
1156 private:
1157 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1158 // so we compute the offsets at startup rather than hard-wiring them.
1159 static int _context_offset;
1160 static int _privilegedContext_offset;
1161 static int _isPrivileged_offset;
1162 static int _isAuthorized_offset;
1163
1164 static void compute_offsets();
1165 public:
1166 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1167
1168 static bool is_authorized(Handle context);
1169
1170 // Debugging/initialization
1171 friend class JavaClasses;
1172 };
1173
1174
1175 // Interface to java.lang.ClassLoader objects
1176
1177 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1178 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1179
1180 class java_lang_ClassLoader : AllStatic {
1181 private:
1182 // The fake offsets are added by the class loader when java.lang.Class is loaded
1183 enum {
1184 hc_parent_offset = 0
1185 };
1186 static int _loader_data_offset;
1187 static bool offsets_computed;
1188 static int parent_offset;
1189 static int parallelCapable_offset;
1190
1191 public:
1192 static void compute_offsets();
1193
1194 static ClassLoaderData** loader_data_addr(oop loader);
1195 static ClassLoaderData* loader_data(oop loader);
1196
1197 static oop parent(oop loader);
1198 static bool isAncestor(oop loader, oop cl);
1199
1200 // Support for parallelCapable field
1201 static bool parallelCapable(oop the_class_mirror);
1202
1203 static bool is_trusted_loader(oop loader);
1204
1205 // Fix for 4474172
1206 static oop non_reflection_class_loader(oop loader);
1207
1208 // Testers
1209 static bool is_subclass(Klass* klass) {
1210 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1211 }
1212 static bool is_instance(oop obj);
1213
1214 // Debugging
1215 friend class JavaClasses;
1216 friend class ClassFileParser; // access to number_of_fake_fields
1217 };
1218
1219
1220 // Interface to java.lang.System objects
1221
1222 class java_lang_System : AllStatic {
1223 private:
1224 enum {
1225 hc_static_in_offset = 0,
1226 hc_static_out_offset = 1,
1227 hc_static_err_offset = 2,
1228 hc_static_security_offset = 3
1229 };
1230
1231 static int static_in_offset;
1232 static int static_out_offset;
1233 static int static_err_offset;
1234 static int static_security_offset;
1235
1236 public:
1237 static int in_offset_in_bytes();
1238 static int out_offset_in_bytes();
1239 static int err_offset_in_bytes();
1240
1241 static bool has_security_manager();
1242
1243 // Debugging
1244 friend class JavaClasses;
1245 };
1246
1247
1248 // Interface to java.lang.StackTraceElement objects
1249
1250 class java_lang_StackTraceElement: AllStatic {
1251 private:
1252 enum {
1253 hc_declaringClass_offset = 0,
1254 hc_methodName_offset = 1,
1255 hc_fileName_offset = 2,
1256 hc_lineNumber_offset = 3
1257 };
1258
1259 static int declaringClass_offset;
1260 static int methodName_offset;
1261 static int fileName_offset;
1262 static int lineNumber_offset;
1263
1264 // Setters
1265 static void set_declaringClass(oop element, oop value);
1266 static void set_methodName(oop element, oop value);
1267 static void set_fileName(oop element, oop value);
1268 static void set_lineNumber(oop element, int value);
1269
1270 public:
1271 // Create an instance of StackTraceElement
1272 static oop create(const methodHandle& method, int bci, TRAPS);
1273
1274 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1275 int version, int bci, int cpref, TRAPS);
1276
1277 // Debugging
1278 friend class JavaClasses;
1279 };
1280
1281
1282 class Backtrace: AllStatic {
1283 public:
1284 // Helper backtrace functions to store bci|version together.
1285 static int merge_bci_and_version(int bci, int version);
1286 static int merge_mid_and_cpref(int mid, int cpref);
1287 static int bci_at(unsigned int merged);
1288 static int version_at(unsigned int merged);
1289 static int mid_at(unsigned int merged);
1290 static int cpref_at(unsigned int merged);
1291 static int get_line_number(const methodHandle& method, int bci);
1292 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1293
1294 // Debugging
1295 friend class JavaClasses;
1296 };
1297
1298 // Interface to java.lang.StackFrameInfo objects
1299
1300 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1301 macro(java_lang_StackFrameInfo, mid, short_signature, false) \
1302 macro(java_lang_StackFrameInfo, version, short_signature, false) \
1303 macro(java_lang_StackFrameInfo, cpref, short_signature, false)
1304
1305 class java_lang_StackFrameInfo: AllStatic {
1306 private:
1307 static int _declaringClass_offset;
1308 static int _memberName_offset;
1309 static int _bci_offset;
1310 static int _methodName_offset;
1311 static int _fileName_offset;
1312 static int _lineNumber_offset;
1313
1314 static int _mid_offset;
1315 static int _version_offset;
1316 static int _cpref_offset;
1317
1318 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1319 static Symbol* get_file_name(Handle stackFrame, InstanceKlass* holder);
1320
1321 public:
1322 // Setters
1323 static void set_declaringClass(oop info, oop value);
1324 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci);
1325 static void set_bci(oop info, int value);
1326
1327 // set method info in an instance of StackFrameInfo
1328 static void fill_methodInfo(Handle info, TRAPS);
1329 static void set_methodName(oop info, oop value);
1330 static void set_fileName(oop info, oop value);
1331 static void set_lineNumber(oop info, int value);
1332
1333 // these injected fields are only used if -XX:-MemberNameInStackFrame set
1334 static void set_mid(oop info, short value);
1335 static void set_version(oop info, short value);
1336 static void set_cpref(oop info, short value);
1337
1338 static void compute_offsets();
1339
1340 // Debugging
1341 friend class JavaClasses;
1342 };
1343
1344 class java_lang_LiveStackFrameInfo: AllStatic {
1345 private:
1346 static int _monitors_offset;
1347 static int _locals_offset;
1348 static int _operands_offset;
1349
1350 public:
1351 static void set_monitors(oop info, oop value);
1352 static void set_locals(oop info, oop value);
1353 static void set_operands(oop info, oop value);
1354
1355 static void compute_offsets();
1356
1357 // Debugging
1358 friend class JavaClasses;
1359 };
1360
1361 // Interface to java.lang.AssertionStatusDirectives objects
1362
1363 class java_lang_AssertionStatusDirectives: AllStatic {
1364 private:
1365 enum {
1366 hc_classes_offset,
1367 hc_classEnabled_offset,
1368 hc_packages_offset,
1369 hc_packageEnabled_offset,
1370 hc_deflt_offset
1371 };
1372
1373 static int classes_offset;
1374 static int classEnabled_offset;
1375 static int packages_offset;
1376 static int packageEnabled_offset;
1377 static int deflt_offset;
1378
1379 public:
1380 // Setters
1381 static void set_classes(oop obj, oop val);
1382 static void set_classEnabled(oop obj, oop val);
1383 static void set_packages(oop obj, oop val);
1384 static void set_packageEnabled(oop obj, oop val);
1385 static void set_deflt(oop obj, bool val);
1386 // Debugging
1387 friend class JavaClasses;
1388 };
1389
1390
1391 class java_nio_Buffer: AllStatic {
1392 private:
1393 static int _limit_offset;
1394
1395 public:
1396 static int limit_offset();
1397 static void compute_offsets();
1398 };
1399
1400 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1401 private:
1402 static int _owner_offset;
1403 public:
1404 static void initialize(TRAPS);
1405 static oop get_owner_threadObj(oop obj);
1406 };
1407
1408 // Use to declare fields that need to be injected into Java classes
1409 // for the JVM to use. The name_index and signature_index are
1410 // declared in vmSymbols. The may_be_java flag is used to declare
1411 // fields that might already exist in Java but should be injected if
1412 // they don't. Otherwise the field is unconditionally injected and
1413 // the JVM uses the injected one. This is to ensure that name
1414 // collisions don't occur. In general may_be_java should be false
1415 // unless there's a good reason.
1416
1417 class InjectedField {
1418 public:
1419 const SystemDictionary::WKID klass_id;
1420 const vmSymbols::SID name_index;
1421 const vmSymbols::SID signature_index;
1422 const bool may_be_java;
1423
1424
1425 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1426 Symbol* name() const { return lookup_symbol(name_index); }
1427 Symbol* signature() const { return lookup_symbol(signature_index); }
1428
1429 int compute_offset();
1430
1431 // Find the Symbol for this index
1432 static Symbol* lookup_symbol(int symbol_index) {
1433 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1434 }
1435 };
1436
1437 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1438 klass##_##name##_enum,
1439
1440 #define ALL_INJECTED_FIELDS(macro) \
1441 CLASS_INJECTED_FIELDS(macro) \
1442 CLASSLOADER_INJECTED_FIELDS(macro) \
1443 MEMBERNAME_INJECTED_FIELDS(macro) \
1444 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1445 STACKFRAMEINFO_INJECTED_FIELDS(macro)
1446
1447
1448 // Interface to hard-coded offset checking
1449
1450 class JavaClasses : AllStatic {
1451 private:
1452
1453 static InjectedField _injected_fields[];
1454
1455 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1456 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1457 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1458
1459 public:
1460 enum InjectedFieldID {
1461 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1462 MAX_enum
1463 };
1464
1465 static int compute_injected_offset(InjectedFieldID id);
1466
1467 static void compute_hard_coded_offsets();
1468 static void compute_offsets();
1469 static void check_offsets() PRODUCT_RETURN;
1470
1471 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1472 };
1473
1474 #undef DECLARE_INJECTED_FIELD_ENUM
1475
1476 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP