Mon, 06 Aug 2012 15:54:45 -0400
7116786: RFE: Detailed information on VerifyErrors
Summary: Provide additional detail in VerifyError messages
Reviewed-by: sspitsyn, acorn
1 /*
2 * Copyright (c) 1997, 2012, 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 */
25 #ifndef SHARE_VM_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_VM_CLASSFILE_JAVACLASSES_HPP
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"
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.
51 // Interface to java.lang.String objects
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;
60 static bool initialized;
62 static Handle basic_create(int length, bool tenured, TRAPS);
63 static Handle basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS);
65 static void set_value( oop string, typeArrayOop buffer) {
66 assert(initialized, "Must be initialized");
67 string->obj_field_put(value_offset, (oop)buffer);
68 }
69 static void set_offset(oop string, int offset) {
70 assert(initialized, "Must be initialized");
71 if (offset_offset > 0) {
72 string->int_field_put(offset_offset, offset);
73 }
74 }
75 static void set_count( oop string, int count) {
76 assert(initialized, "Must be initialized");
77 if (count_offset > 0) {
78 string->int_field_put(count_offset, count);
79 }
80 }
82 public:
83 static void compute_offsets();
85 // Instance creation
86 static Handle create_from_unicode(jchar* unicode, int len, TRAPS);
87 static Handle create_tenured_from_unicode(jchar* unicode, int len, TRAPS);
88 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS);
89 static Handle create_from_str(const char* utf8_str, TRAPS);
90 static oop create_oop_from_str(const char* utf8_str, TRAPS);
91 static Handle create_from_symbol(Symbol* symbol, TRAPS);
92 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
93 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
95 static bool has_offset_field() {
96 assert(initialized, "Must be initialized");
97 return (offset_offset > 0);
98 }
100 static bool has_count_field() {
101 assert(initialized, "Must be initialized");
102 return (count_offset > 0);
103 }
105 static bool has_hash_field() {
106 assert(initialized, "Must be initialized");
107 return (hash_offset > 0);
108 }
110 static int value_offset_in_bytes() {
111 assert(initialized && (value_offset > 0), "Must be initialized");
112 return value_offset;
113 }
114 static int count_offset_in_bytes() {
115 assert(initialized && (count_offset > 0), "Must be initialized");
116 return count_offset;
117 }
118 static int offset_offset_in_bytes() {
119 assert(initialized && (offset_offset > 0), "Must be initialized");
120 return offset_offset;
121 }
122 static int hash_offset_in_bytes() {
123 assert(initialized && (hash_offset > 0), "Must be initialized");
124 return hash_offset;
125 }
127 // Accessors
128 static typeArrayOop value(oop java_string) {
129 assert(initialized && (value_offset > 0), "Must be initialized");
130 assert(is_instance(java_string), "must be java_string");
131 return (typeArrayOop) java_string->obj_field(value_offset);
132 }
133 static int offset(oop java_string) {
134 assert(initialized, "Must be initialized");
135 assert(is_instance(java_string), "must be java_string");
136 if (offset_offset > 0) {
137 return java_string->int_field(offset_offset);
138 } else {
139 return 0;
140 }
141 }
142 static int length(oop java_string) {
143 assert(initialized, "Must be initialized");
144 assert(is_instance(java_string), "must be java_string");
145 if (count_offset > 0) {
146 return java_string->int_field(count_offset);
147 } else {
148 return ((typeArrayOop)java_string->obj_field(value_offset))->length();
149 }
150 }
151 static int utf8_length(oop java_string);
153 // String converters
154 static char* as_utf8_string(oop java_string);
155 static char* as_utf8_string(oop java_string, char* buf, int buflen);
156 static char* as_utf8_string(oop java_string, int start, int len);
157 static char* as_platform_dependent_str(Handle java_string, TRAPS);
158 static jchar* as_unicode_string(oop java_string, int& length);
160 // Compute the hash value for a java.lang.String object which would
161 // contain the characters passed in.
162 //
163 // As the hash value used by the String object itself, in
164 // String.hashCode(). This value is normally calculated in Java code
165 // in the String.hashCode method(), but is precomputed for String
166 // objects in the shared archive file.
167 // hash P(31) from Kernighan & Ritchie
168 //
169 // For this reason, THIS ALGORITHM MUST MATCH String.toHash().
170 template <typename T> static unsigned int to_hash(T* s, int len) {
171 unsigned int h = 0;
172 while (len-- > 0) {
173 h = 31*h + (unsigned int) *s;
174 s++;
175 }
176 return h;
177 }
178 static unsigned int to_hash(oop java_string);
180 // This is the string hash code used by the StringTable, which may be
181 // the same as String.toHash or an alternate hash code.
182 static unsigned int hash_string(oop java_string);
184 static bool equals(oop java_string, jchar* chars, int len);
186 // Conversion between '.' and '/' formats
187 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
188 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
190 // Conversion
191 static Symbol* as_symbol(Handle java_string, TRAPS);
192 static Symbol* as_symbol_or_null(oop java_string);
194 // Testers
195 static bool is_instance(oop obj) {
196 return obj != NULL && obj->klass() == SystemDictionary::String_klass();
197 }
199 // Debugging
200 static void print(Handle java_string, outputStream* st);
201 friend class JavaClasses;
202 };
205 // Interface to java.lang.Class objects
207 #define CLASS_INJECTED_FIELDS(macro) \
208 macro(java_lang_Class, klass, object_signature, false) \
209 macro(java_lang_Class, resolved_constructor, object_signature, false) \
210 macro(java_lang_Class, array_klass, object_signature, false) \
211 macro(java_lang_Class, oop_size, int_signature, false) \
212 macro(java_lang_Class, static_oop_field_count, int_signature, false)
214 class java_lang_Class : AllStatic {
215 friend class VMStructs;
217 private:
218 // The fake offsets are added by the class loader when java.lang.Class is loaded
220 static int _klass_offset;
221 static int _resolved_constructor_offset;
222 static int _array_klass_offset;
224 static int _oop_size_offset;
225 static int _static_oop_field_count_offset;
227 static bool offsets_computed;
228 static int classRedefinedCount_offset;
230 public:
231 static void compute_offsets();
233 // Instance creation
234 static oop create_mirror(KlassHandle k, TRAPS);
235 static void fixup_mirror(KlassHandle k, TRAPS);
236 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
237 // Conversion
238 static klassOop as_klassOop(oop java_class);
239 static void set_klass(oop java_class, klassOop klass);
240 static BasicType as_BasicType(oop java_class, klassOop* reference_klass = NULL);
241 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) {
242 klassOop refk_oop = NULL;
243 BasicType result = as_BasicType(java_class, &refk_oop);
244 (*reference_klass) = KlassHandle(refk_oop);
245 return result;
246 }
247 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
248 static void print_signature(oop java_class, outputStream *st);
249 // Testing
250 static bool is_instance(oop obj) {
251 return obj != NULL && obj->klass() == SystemDictionary::Class_klass();
252 }
253 static bool is_primitive(oop java_class);
254 static BasicType primitive_type(oop java_class);
255 static oop primitive_mirror(BasicType t);
256 // JVM_NewInstance support
257 static methodOop resolved_constructor(oop java_class);
258 static void set_resolved_constructor(oop java_class, methodOop constructor);
259 // JVM_NewArray support
260 static klassOop array_klass(oop java_class);
261 static void set_array_klass(oop java_class, klassOop klass);
262 // compiler support for class operations
263 static int klass_offset_in_bytes() { return _klass_offset; }
264 static int resolved_constructor_offset_in_bytes() { return _resolved_constructor_offset; }
265 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
266 // Support for classRedefinedCount field
267 static int classRedefinedCount(oop the_class_mirror);
268 static void set_classRedefinedCount(oop the_class_mirror, int value);
270 static int oop_size(oop java_class);
271 static void set_oop_size(oop java_class, int size);
272 static int static_oop_field_count(oop java_class);
273 static void set_static_oop_field_count(oop java_class, int size);
275 // Debugging
276 friend class JavaClasses;
277 friend class instanceKlass; // verification code accesses offsets
278 friend class ClassFileParser; // access to number_of_fake_fields
279 };
281 // Interface to java.lang.Thread objects
283 class java_lang_Thread : AllStatic {
284 private:
285 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
286 // so we compute the offsets at startup rather than hard-wiring them.
287 static int _name_offset;
288 static int _group_offset;
289 static int _contextClassLoader_offset;
290 static int _inheritedAccessControlContext_offset;
291 static int _priority_offset;
292 static int _eetop_offset;
293 static int _daemon_offset;
294 static int _stillborn_offset;
295 static int _stackSize_offset;
296 static int _tid_offset;
297 static int _thread_status_offset;
298 static int _park_blocker_offset;
299 static int _park_event_offset ;
301 static void compute_offsets();
303 public:
304 // Instance creation
305 static oop create();
306 // Returns the JavaThread associated with the thread obj
307 static JavaThread* thread(oop java_thread);
308 // Set JavaThread for instance
309 static void set_thread(oop java_thread, JavaThread* thread);
310 // Name
311 static typeArrayOop name(oop java_thread);
312 static void set_name(oop java_thread, typeArrayOop name);
313 // Priority
314 static ThreadPriority priority(oop java_thread);
315 static void set_priority(oop java_thread, ThreadPriority priority);
316 // Thread group
317 static oop threadGroup(oop java_thread);
318 // Stillborn
319 static bool is_stillborn(oop java_thread);
320 static void set_stillborn(oop java_thread);
321 // Alive (NOTE: this is not really a field, but provides the correct
322 // definition without doing a Java call)
323 static bool is_alive(oop java_thread);
324 // Daemon
325 static bool is_daemon(oop java_thread);
326 static void set_daemon(oop java_thread);
327 // Context ClassLoader
328 static oop context_class_loader(oop java_thread);
329 // Control context
330 static oop inherited_access_control_context(oop java_thread);
331 // Stack size hint
332 static jlong stackSize(oop java_thread);
333 // Thread ID
334 static jlong thread_id(oop java_thread);
336 // Blocker object responsible for thread parking
337 static oop park_blocker(oop java_thread);
339 // Pointer to type-stable park handler, encoded as jlong.
340 // Should be set when apparently null
341 // For details, see unsafe.cpp Unsafe_Unpark
342 static jlong park_event(oop java_thread);
343 static bool set_park_event(oop java_thread, jlong ptr);
345 // Java Thread Status for JVMTI and M&M use.
346 // This thread status info is saved in threadStatus field of
347 // java.lang.Thread java class.
348 enum ThreadStatus {
349 NEW = 0,
350 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
351 JVMTI_THREAD_STATE_RUNNABLE,
352 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
353 JVMTI_THREAD_STATE_WAITING +
354 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
355 JVMTI_THREAD_STATE_SLEEPING,
356 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
357 JVMTI_THREAD_STATE_WAITING +
358 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
359 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
360 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
361 JVMTI_THREAD_STATE_WAITING +
362 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
363 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
364 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
365 JVMTI_THREAD_STATE_WAITING +
366 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
367 JVMTI_THREAD_STATE_PARKED,
368 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
369 JVMTI_THREAD_STATE_WAITING +
370 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
371 JVMTI_THREAD_STATE_PARKED,
372 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
373 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
374 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
375 };
376 // Write thread status info to threadStatus field of java.lang.Thread.
377 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
378 // Read thread status info from threadStatus field of java.lang.Thread.
379 static ThreadStatus get_thread_status(oop java_thread_oop);
381 static const char* thread_status_name(oop java_thread_oop);
383 // Debugging
384 friend class JavaClasses;
385 };
387 // Interface to java.lang.ThreadGroup objects
389 class java_lang_ThreadGroup : AllStatic {
390 private:
391 static int _parent_offset;
392 static int _name_offset;
393 static int _threads_offset;
394 static int _groups_offset;
395 static int _maxPriority_offset;
396 static int _destroyed_offset;
397 static int _daemon_offset;
398 static int _vmAllowSuspension_offset;
399 static int _nthreads_offset;
400 static int _ngroups_offset;
402 static void compute_offsets();
404 public:
405 // parent ThreadGroup
406 static oop parent(oop java_thread_group);
407 // name
408 static typeArrayOop name(oop java_thread_group);
409 // ("name as oop" accessor is not necessary)
410 // Number of threads in group
411 static int nthreads(oop java_thread_group);
412 // threads
413 static objArrayOop threads(oop java_thread_group);
414 // Number of threads in group
415 static int ngroups(oop java_thread_group);
416 // groups
417 static objArrayOop groups(oop java_thread_group);
418 // maxPriority in group
419 static ThreadPriority maxPriority(oop java_thread_group);
420 // Destroyed
421 static bool is_destroyed(oop java_thread_group);
422 // Daemon
423 static bool is_daemon(oop java_thread_group);
424 // vmAllowSuspension
425 static bool is_vmAllowSuspension(oop java_thread_group);
426 // Debugging
427 friend class JavaClasses;
428 };
432 // Interface to java.lang.Throwable objects
434 class java_lang_Throwable: AllStatic {
435 friend class BacktraceBuilder;
437 private:
438 // Offsets
439 enum {
440 hc_backtrace_offset = 0,
441 hc_detailMessage_offset = 1,
442 hc_cause_offset = 2, // New since 1.4
443 hc_stackTrace_offset = 3 // New since 1.4
444 };
445 enum {
446 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7
447 };
448 // Trace constants
449 enum {
450 trace_methods_offset = 0,
451 trace_bcis_offset = 1,
452 trace_next_offset = 2,
453 trace_size = 3,
454 trace_chunk_size = 32
455 };
457 static int backtrace_offset;
458 static int detailMessage_offset;
459 static int cause_offset;
460 static int stackTrace_offset;
461 static int static_unassigned_stacktrace_offset;
463 // Printing
464 static char* print_stack_element_to_buffer(methodOop method, int bci);
465 static void print_to_stream(Handle stream, const char* str);
466 // StackTrace (programmatic access, new since 1.4)
467 static void clear_stacktrace(oop throwable);
468 // No stack trace available
469 static const char* no_stack_trace_message();
470 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
471 static void set_stacktrace(oop throwable, oop st_element_array);
472 static oop unassigned_stacktrace();
474 public:
475 // Backtrace
476 static oop backtrace(oop throwable);
477 static void set_backtrace(oop throwable, oop value);
478 // Needed by JVMTI to filter out this internal field.
479 static int get_backtrace_offset() { return backtrace_offset;}
480 static int get_detailMessage_offset() { return detailMessage_offset;}
481 // Message
482 static oop message(oop throwable);
483 static oop message(Handle throwable);
484 static void set_message(oop throwable, oop value);
485 // Print stack trace stored in exception by call-back to Java
486 // Note: this is no longer used in Merlin, but we still suppport
487 // it for compatibility.
488 static void print_stack_trace(oop throwable, oop print_stream);
489 static void print_stack_element(Handle stream, methodOop method, int bci);
490 static void print_stack_element(outputStream *st, methodOop method, int bci);
491 static void print_stack_usage(Handle stream);
493 // Allocate space for backtrace (created but stack trace not filled in)
494 static void allocate_backtrace(Handle throwable, TRAPS);
495 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
496 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
497 // Fill in current stack trace, can cause GC
498 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS);
499 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle());
500 // Programmatic access to stack trace
501 static oop get_stack_trace_element(oop throwable, int index, TRAPS);
502 static int get_stack_trace_depth(oop throwable, TRAPS);
503 // Printing
504 static void print(oop throwable, outputStream* st);
505 static void print(Handle throwable, outputStream* st);
506 static void print_stack_trace(oop throwable, outputStream* st);
507 // Debugging
508 friend class JavaClasses;
509 };
512 // Interface to java.lang.reflect.AccessibleObject objects
514 class java_lang_reflect_AccessibleObject: AllStatic {
515 private:
516 // Note that to reduce dependencies on the JDK we compute these
517 // offsets at run-time.
518 static int override_offset;
520 static void compute_offsets();
522 public:
523 // Accessors
524 static jboolean override(oop reflect);
525 static void set_override(oop reflect, jboolean value);
527 // Debugging
528 friend class JavaClasses;
529 };
532 // Interface to java.lang.reflect.Method objects
534 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
535 private:
536 // Note that to reduce dependencies on the JDK we compute these
537 // offsets at run-time.
538 static int clazz_offset;
539 static int name_offset;
540 static int returnType_offset;
541 static int parameterTypes_offset;
542 static int exceptionTypes_offset;
543 static int slot_offset;
544 static int modifiers_offset;
545 static int signature_offset;
546 static int annotations_offset;
547 static int parameter_annotations_offset;
548 static int annotation_default_offset;
550 static void compute_offsets();
552 public:
553 // Allocation
554 static Handle create(TRAPS);
556 // Accessors
557 static oop clazz(oop reflect);
558 static void set_clazz(oop reflect, oop value);
560 static oop name(oop method);
561 static void set_name(oop method, oop value);
563 static oop return_type(oop method);
564 static void set_return_type(oop method, oop value);
566 static oop parameter_types(oop method);
567 static void set_parameter_types(oop method, oop value);
569 static oop exception_types(oop method);
570 static void set_exception_types(oop method, oop value);
572 static int slot(oop reflect);
573 static void set_slot(oop reflect, int value);
575 static int modifiers(oop method);
576 static void set_modifiers(oop method, int value);
578 static bool has_signature_field();
579 static oop signature(oop method);
580 static void set_signature(oop method, oop value);
582 static bool has_annotations_field();
583 static oop annotations(oop method);
584 static void set_annotations(oop method, oop value);
586 static bool has_parameter_annotations_field();
587 static oop parameter_annotations(oop method);
588 static void set_parameter_annotations(oop method, oop value);
590 static bool has_annotation_default_field();
591 static oop annotation_default(oop method);
592 static void set_annotation_default(oop method, oop value);
594 // Debugging
595 friend class JavaClasses;
596 };
599 // Interface to java.lang.reflect.Constructor objects
601 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
602 private:
603 // Note that to reduce dependencies on the JDK we compute these
604 // offsets at run-time.
605 static int clazz_offset;
606 static int parameterTypes_offset;
607 static int exceptionTypes_offset;
608 static int slot_offset;
609 static int modifiers_offset;
610 static int signature_offset;
611 static int annotations_offset;
612 static int parameter_annotations_offset;
614 static void compute_offsets();
616 public:
617 // Allocation
618 static Handle create(TRAPS);
620 // Accessors
621 static oop clazz(oop reflect);
622 static void set_clazz(oop reflect, oop value);
624 static oop parameter_types(oop constructor);
625 static void set_parameter_types(oop constructor, oop value);
627 static oop exception_types(oop constructor);
628 static void set_exception_types(oop constructor, oop value);
630 static int slot(oop reflect);
631 static void set_slot(oop reflect, int value);
633 static int modifiers(oop constructor);
634 static void set_modifiers(oop constructor, int value);
636 static bool has_signature_field();
637 static oop signature(oop constructor);
638 static void set_signature(oop constructor, oop value);
640 static bool has_annotations_field();
641 static oop annotations(oop constructor);
642 static void set_annotations(oop constructor, oop value);
644 static bool has_parameter_annotations_field();
645 static oop parameter_annotations(oop method);
646 static void set_parameter_annotations(oop method, oop value);
648 // Debugging
649 friend class JavaClasses;
650 };
653 // Interface to java.lang.reflect.Field objects
655 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
656 private:
657 // Note that to reduce dependencies on the JDK we compute these
658 // offsets at run-time.
659 static int clazz_offset;
660 static int name_offset;
661 static int type_offset;
662 static int slot_offset;
663 static int modifiers_offset;
664 static int signature_offset;
665 static int annotations_offset;
667 static void compute_offsets();
669 public:
670 // Allocation
671 static Handle create(TRAPS);
673 // Accessors
674 static oop clazz(oop reflect);
675 static void set_clazz(oop reflect, oop value);
677 static oop name(oop field);
678 static void set_name(oop field, oop value);
680 static oop type(oop field);
681 static void set_type(oop field, oop value);
683 static int slot(oop reflect);
684 static void set_slot(oop reflect, int value);
686 static int modifiers(oop field);
687 static void set_modifiers(oop field, int value);
689 static bool has_signature_field();
690 static oop signature(oop constructor);
691 static void set_signature(oop constructor, oop value);
693 static bool has_annotations_field();
694 static oop annotations(oop constructor);
695 static void set_annotations(oop constructor, oop value);
697 static bool has_parameter_annotations_field();
698 static oop parameter_annotations(oop method);
699 static void set_parameter_annotations(oop method, oop value);
701 static bool has_annotation_default_field();
702 static oop annotation_default(oop method);
703 static void set_annotation_default(oop method, oop value);
705 // Debugging
706 friend class JavaClasses;
707 };
709 // Interface to sun.reflect.ConstantPool objects
710 class sun_reflect_ConstantPool {
711 private:
712 // Note that to reduce dependencies on the JDK we compute these
713 // offsets at run-time.
714 static int _cp_oop_offset;
716 static void compute_offsets();
718 public:
719 // Allocation
720 static Handle create(TRAPS);
722 // Accessors
723 static oop cp_oop(oop reflect);
724 static void set_cp_oop(oop reflect, oop value);
725 static int cp_oop_offset() {
726 return _cp_oop_offset;
727 }
729 // Debugging
730 friend class JavaClasses;
731 };
733 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects
734 class sun_reflect_UnsafeStaticFieldAccessorImpl {
735 private:
736 static int _base_offset;
737 static void compute_offsets();
739 public:
740 static int base_offset() {
741 return _base_offset;
742 }
744 // Debugging
745 friend class JavaClasses;
746 };
748 // Interface to java.lang primitive type boxing objects:
749 // - java.lang.Boolean
750 // - java.lang.Character
751 // - java.lang.Float
752 // - java.lang.Double
753 // - java.lang.Byte
754 // - java.lang.Short
755 // - java.lang.Integer
756 // - java.lang.Long
758 // This could be separated out into 8 individual classes.
760 class java_lang_boxing_object: AllStatic {
761 private:
762 enum {
763 hc_value_offset = 0
764 };
765 static int value_offset;
766 static int long_value_offset;
768 static oop initialize_and_allocate(BasicType type, TRAPS);
769 public:
770 // Allocation. Returns a boxed value, or NULL for invalid type.
771 static oop create(BasicType type, jvalue* value, TRAPS);
772 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
773 static BasicType get_value(oop box, jvalue* value);
774 static BasicType set_value(oop box, jvalue* value);
775 static BasicType basic_type(oop box);
776 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
777 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
778 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
779 static void print(BasicType type, jvalue* value, outputStream* st);
781 static int value_offset_in_bytes(BasicType type) {
782 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
783 value_offset;
784 }
786 // Debugging
787 friend class JavaClasses;
788 };
792 // Interface to java.lang.ref.Reference objects
794 class java_lang_ref_Reference: AllStatic {
795 public:
796 enum {
797 hc_referent_offset = 0,
798 hc_queue_offset = 1,
799 hc_next_offset = 2,
800 hc_discovered_offset = 3 // Is not last, see SoftRefs.
801 };
802 enum {
803 hc_static_lock_offset = 0,
804 hc_static_pending_offset = 1
805 };
807 static int referent_offset;
808 static int queue_offset;
809 static int next_offset;
810 static int discovered_offset;
811 static int static_lock_offset;
812 static int static_pending_offset;
813 static int number_of_fake_oop_fields;
815 // Accessors
816 static oop referent(oop ref) {
817 return ref->obj_field(referent_offset);
818 }
819 static void set_referent(oop ref, oop value) {
820 ref->obj_field_put(referent_offset, value);
821 }
822 static void set_referent_raw(oop ref, oop value) {
823 ref->obj_field_put_raw(referent_offset, value);
824 }
825 static HeapWord* referent_addr(oop ref) {
826 return ref->obj_field_addr<HeapWord>(referent_offset);
827 }
828 static oop next(oop ref) {
829 return ref->obj_field(next_offset);
830 }
831 static void set_next(oop ref, oop value) {
832 ref->obj_field_put(next_offset, value);
833 }
834 static void set_next_raw(oop ref, oop value) {
835 ref->obj_field_put_raw(next_offset, value);
836 }
837 static HeapWord* next_addr(oop ref) {
838 return ref->obj_field_addr<HeapWord>(next_offset);
839 }
840 static oop discovered(oop ref) {
841 return ref->obj_field(discovered_offset);
842 }
843 static void set_discovered(oop ref, oop value) {
844 ref->obj_field_put(discovered_offset, value);
845 }
846 static void set_discovered_raw(oop ref, oop value) {
847 ref->obj_field_put_raw(discovered_offset, value);
848 }
849 static HeapWord* discovered_addr(oop ref) {
850 return ref->obj_field_addr<HeapWord>(discovered_offset);
851 }
852 // Accessors for statics
853 static oop pending_list_lock();
854 static oop pending_list();
856 static HeapWord* pending_list_addr();
857 };
860 // Interface to java.lang.ref.SoftReference objects
862 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
863 public:
864 enum {
865 // The timestamp is a long field and may need to be adjusted for alignment.
866 hc_timestamp_offset = hc_discovered_offset + 1
867 };
868 enum {
869 hc_static_clock_offset = 0
870 };
872 static int timestamp_offset;
873 static int static_clock_offset;
875 // Accessors
876 static jlong timestamp(oop ref);
878 // Accessors for statics
879 static jlong clock();
880 static void set_clock(jlong value);
881 };
884 // Interface to java.lang.invoke.MethodHandle objects
886 #define METHODHANDLE_INJECTED_FIELDS(macro) \
887 macro(java_lang_invoke_MethodHandle, vmentry, intptr_signature, false) \
888 macro(java_lang_invoke_MethodHandle, vmtarget, object_signature, true)
890 class MethodHandleEntry;
892 class java_lang_invoke_MethodHandle: AllStatic {
893 friend class JavaClasses;
895 private:
896 static int _vmentry_offset; // assembly code trampoline for MH
897 static int _vmtarget_offset; // class-specific target reference
898 static int _type_offset; // the MethodType of this MH
900 static void compute_offsets();
902 public:
903 // Accessors
904 static oop type(oop mh);
905 static void set_type(oop mh, oop mtype);
907 static oop vmtarget(oop mh);
908 static void set_vmtarget(oop mh, oop target);
910 static MethodHandleEntry* vmentry(oop mh);
911 static void set_vmentry(oop mh, MethodHandleEntry* data);
913 static int vmslots(oop mh);
915 // Testers
916 static bool is_subclass(klassOop klass) {
917 return Klass::cast(klass)->is_subclass_of(SystemDictionary::MethodHandle_klass());
918 }
919 static bool is_instance(oop obj) {
920 return obj != NULL && is_subclass(obj->klass());
921 }
923 // Accessors for code generation:
924 static int type_offset_in_bytes() { return _type_offset; }
925 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
926 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
927 };
929 #define DIRECTMETHODHANDLE_INJECTED_FIELDS(macro) \
930 macro(java_lang_invoke_DirectMethodHandle, vmindex, int_signature, true)
932 class java_lang_invoke_DirectMethodHandle: public java_lang_invoke_MethodHandle {
933 friend class JavaClasses;
935 private:
936 static int _vmindex_offset; // negative or vtable idx or itable idx
937 static void compute_offsets();
939 public:
940 // Accessors
941 static int vmindex(oop mh);
942 static void set_vmindex(oop mh, int index);
944 // Testers
945 static bool is_subclass(klassOop klass) {
946 return Klass::cast(klass)->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
947 }
948 static bool is_instance(oop obj) {
949 return obj != NULL && is_subclass(obj->klass());
950 }
952 // Accessors for code generation:
953 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
954 };
956 class java_lang_invoke_BoundMethodHandle: public java_lang_invoke_MethodHandle {
957 friend class JavaClasses;
959 private:
960 static int _argument_offset; // argument value bound into this MH
961 static int _vmargslot_offset; // relevant argument slot (<= vmslots)
962 static void compute_offsets();
964 public:
965 static oop argument(oop mh);
966 static void set_argument(oop mh, oop ref);
968 static jint vmargslot(oop mh);
969 static void set_vmargslot(oop mh, jint slot);
971 // Testers
972 static bool is_subclass(klassOop klass) {
973 return Klass::cast(klass)->is_subclass_of(SystemDictionary::BoundMethodHandle_klass());
974 }
975 static bool is_instance(oop obj) {
976 return obj != NULL && is_subclass(obj->klass());
977 }
979 static int argument_offset_in_bytes() { return _argument_offset; }
980 static int vmargslot_offset_in_bytes() { return _vmargslot_offset; }
981 };
983 class java_lang_invoke_AdapterMethodHandle: public java_lang_invoke_BoundMethodHandle {
984 friend class JavaClasses;
986 private:
987 static int _conversion_offset; // type of conversion to apply
988 static void compute_offsets();
990 public:
991 static int conversion(oop mh);
992 static void set_conversion(oop mh, int conv);
994 // Testers
995 static bool is_subclass(klassOop klass) {
996 return Klass::cast(klass)->is_subclass_of(SystemDictionary::AdapterMethodHandle_klass());
997 }
998 static bool is_instance(oop obj) {
999 return obj != NULL && is_subclass(obj->klass());
1000 }
1002 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1003 enum {
1004 OP_RETYPE_ONLY = 0x0, // no argument changes; straight retype
1005 OP_RETYPE_RAW = 0x1, // straight retype, trusted (void->int, Object->T)
1006 OP_CHECK_CAST = 0x2, // ref-to-ref conversion; requires a Class argument
1007 OP_PRIM_TO_PRIM = 0x3, // converts from one primitive to another
1008 OP_REF_TO_PRIM = 0x4, // unboxes a wrapper to produce a primitive
1009 OP_PRIM_TO_REF = 0x5, // boxes a primitive into a wrapper
1010 OP_SWAP_ARGS = 0x6, // swap arguments (vminfo is 2nd arg)
1011 OP_ROT_ARGS = 0x7, // rotate arguments (vminfo is displaced arg)
1012 OP_DUP_ARGS = 0x8, // duplicates one or more arguments (at TOS)
1013 OP_DROP_ARGS = 0x9, // remove one or more argument slots
1014 OP_COLLECT_ARGS = 0xA, // combine arguments using an auxiliary function
1015 OP_SPREAD_ARGS = 0xB, // expand in place a varargs array (of known size)
1016 OP_FOLD_ARGS = 0xC, // combine but do not remove arguments; prepend result
1017 //OP_UNUSED_13 = 0xD, // unused code, perhaps for reified argument lists
1018 CONV_OP_LIMIT = 0xE, // limit of CONV_OP enumeration
1020 CONV_OP_MASK = 0xF00, // this nybble contains the conversion op field
1021 CONV_TYPE_MASK = 0x0F, // fits T_ADDRESS and below
1022 CONV_VMINFO_MASK = 0x0FF, // LSB is reserved for JVM use
1023 CONV_VMINFO_SHIFT = 0, // position of bits in CONV_VMINFO_MASK
1024 CONV_OP_SHIFT = 8, // position of bits in CONV_OP_MASK
1025 CONV_DEST_TYPE_SHIFT = 12, // byte 2 has the adapter BasicType (if needed)
1026 CONV_SRC_TYPE_SHIFT = 16, // byte 2 has the source BasicType (if needed)
1027 CONV_STACK_MOVE_SHIFT = 20, // high 12 bits give signed SP change
1028 CONV_STACK_MOVE_MASK = (1 << (32 - CONV_STACK_MOVE_SHIFT)) - 1
1029 };
1031 static int conversion_offset_in_bytes() { return _conversion_offset; }
1032 };
1035 // A simple class that maintains an invocation count
1036 class java_lang_invoke_CountingMethodHandle: public java_lang_invoke_MethodHandle {
1037 friend class JavaClasses;
1039 private:
1040 static int _vmcount_offset;
1041 static void compute_offsets();
1043 public:
1044 // Accessors
1045 static int vmcount(oop mh);
1046 static void set_vmcount(oop mh, int count);
1048 // Testers
1049 static bool is_subclass(klassOop klass) {
1050 return SystemDictionary::CountingMethodHandle_klass() != NULL &&
1051 Klass::cast(klass)->is_subclass_of(SystemDictionary::CountingMethodHandle_klass());
1052 }
1053 static bool is_instance(oop obj) {
1054 return obj != NULL && is_subclass(obj->klass());
1055 }
1057 // Accessors for code generation:
1058 static int vmcount_offset_in_bytes() { return _vmcount_offset; }
1059 };
1063 // Interface to java.lang.invoke.MemberName objects
1064 // (These are a private interface for Java code to query the class hierarchy.)
1066 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1067 macro(java_lang_invoke_MemberName, vmtarget, object_signature, true)
1069 class java_lang_invoke_MemberName: AllStatic {
1070 friend class JavaClasses;
1072 private:
1073 // From java.lang.invoke.MemberName:
1074 // private Class<?> clazz; // class in which the method is defined
1075 // private String name; // may be null if not yet materialized
1076 // private Object type; // may be null if not yet materialized
1077 // private int flags; // modifier bits; see reflect.Modifier
1078 // private Object vmtarget; // VM-specific target value
1079 // private int vmindex; // method index within class or interface
1080 static int _clazz_offset;
1081 static int _name_offset;
1082 static int _type_offset;
1083 static int _flags_offset;
1084 static int _vmtarget_offset;
1085 static int _vmindex_offset;
1087 static void compute_offsets();
1089 public:
1090 // Accessors
1091 static oop clazz(oop mname);
1092 static void set_clazz(oop mname, oop clazz);
1094 static oop type(oop mname);
1095 static void set_type(oop mname, oop type);
1097 static oop name(oop mname);
1098 static void set_name(oop mname, oop name);
1100 static int flags(oop mname);
1101 static void set_flags(oop mname, int flags);
1103 static int modifiers(oop mname) { return (u2) flags(mname); }
1104 static void set_modifiers(oop mname, int mods)
1105 { set_flags(mname, (flags(mname) &~ (u2)-1) | (u2)mods); }
1107 static oop vmtarget(oop mname);
1108 static void set_vmtarget(oop mname, oop target);
1110 static int vmindex(oop mname);
1111 static void set_vmindex(oop mname, int index);
1113 // Testers
1114 static bool is_subclass(klassOop klass) {
1115 return Klass::cast(klass)->is_subclass_of(SystemDictionary::MemberName_klass());
1116 }
1117 static bool is_instance(oop obj) {
1118 return obj != NULL && is_subclass(obj->klass());
1119 }
1121 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1122 enum {
1123 MN_IS_METHOD = 0x00010000, // method (not constructor)
1124 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1125 MN_IS_FIELD = 0x00040000, // field
1126 MN_IS_TYPE = 0x00080000, // nested type
1127 MN_SEARCH_SUPERCLASSES = 0x00100000, // for MHN.getMembers
1128 MN_SEARCH_INTERFACES = 0x00200000, // for MHN.getMembers
1129 VM_INDEX_UNINITIALIZED = -99
1130 };
1132 // Accessors for code generation:
1133 static int clazz_offset_in_bytes() { return _clazz_offset; }
1134 static int type_offset_in_bytes() { return _type_offset; }
1135 static int name_offset_in_bytes() { return _name_offset; }
1136 static int flags_offset_in_bytes() { return _flags_offset; }
1137 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1138 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1139 };
1142 // Interface to java.lang.invoke.MethodType objects
1144 class java_lang_invoke_MethodType: AllStatic {
1145 friend class JavaClasses;
1147 private:
1148 static int _rtype_offset;
1149 static int _ptypes_offset;
1150 static int _form_offset;
1152 static void compute_offsets();
1154 public:
1155 // Accessors
1156 static oop rtype(oop mt);
1157 static objArrayOop ptypes(oop mt);
1158 static oop form(oop mt);
1160 static oop ptype(oop mt, int index);
1161 static int ptype_count(oop mt);
1163 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1164 static void print_signature(oop mt, outputStream* st);
1166 static bool is_instance(oop obj) {
1167 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass();
1168 }
1170 static bool equals(oop mt1, oop mt2);
1172 // Accessors for code generation:
1173 static int rtype_offset_in_bytes() { return _rtype_offset; }
1174 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1175 static int form_offset_in_bytes() { return _form_offset; }
1176 };
1178 #define METHODTYPEFORM_INJECTED_FIELDS(macro) \
1179 macro(java_lang_invoke_MethodTypeForm, vmslots, int_signature, true) \
1180 macro(java_lang_invoke_MethodTypeForm, vmlayout, object_signature, true)
1182 class java_lang_invoke_MethodTypeForm: AllStatic {
1183 friend class JavaClasses;
1185 private:
1186 static int _vmslots_offset; // number of argument slots needed
1187 static int _vmlayout_offset; // object describing internal calling sequence
1188 static int _erasedType_offset; // erasedType = canonical MethodType
1189 static int _genericInvoker_offset; // genericInvoker = adapter for invokeGeneric
1191 static void compute_offsets();
1193 public:
1194 // Accessors
1195 static int vmslots(oop mtform);
1196 static void set_vmslots(oop mtform, int vmslots);
1198 static oop erasedType(oop mtform);
1199 static oop genericInvoker(oop mtform);
1201 static oop vmlayout(oop mtform);
1202 static oop init_vmlayout(oop mtform, oop cookie);
1204 // Accessors for code generation:
1205 static int vmslots_offset_in_bytes() { return _vmslots_offset; }
1206 static int vmlayout_offset_in_bytes() { return _vmlayout_offset; }
1207 static int erasedType_offset_in_bytes() { return _erasedType_offset; }
1208 static int genericInvoker_offset_in_bytes() { return _genericInvoker_offset; }
1209 };
1212 // Interface to java.lang.invoke.CallSite objects
1214 class java_lang_invoke_CallSite: AllStatic {
1215 friend class JavaClasses;
1217 private:
1218 static int _target_offset;
1220 static void compute_offsets();
1222 public:
1223 // Accessors
1224 static oop target( oop site) { return site->obj_field( _target_offset); }
1225 static void set_target( oop site, oop target) { site->obj_field_put( _target_offset, target); }
1227 static volatile oop target_volatile(oop site) { return site->obj_field_volatile( _target_offset); }
1228 static void set_target_volatile(oop site, oop target) { site->obj_field_put_volatile(_target_offset, target); }
1230 // Testers
1231 static bool is_subclass(klassOop klass) {
1232 return Klass::cast(klass)->is_subclass_of(SystemDictionary::CallSite_klass());
1233 }
1234 static bool is_instance(oop obj) {
1235 return obj != NULL && is_subclass(obj->klass());
1236 }
1238 // Accessors for code generation:
1239 static int target_offset_in_bytes() { return _target_offset; }
1240 };
1243 // Interface to java.security.AccessControlContext objects
1245 class java_security_AccessControlContext: AllStatic {
1246 private:
1247 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1248 // so we compute the offsets at startup rather than hard-wiring them.
1249 static int _context_offset;
1250 static int _privilegedContext_offset;
1251 static int _isPrivileged_offset;
1253 static void compute_offsets();
1254 public:
1255 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1257 // Debugging/initialization
1258 friend class JavaClasses;
1259 };
1262 // Interface to java.lang.ClassLoader objects
1264 class java_lang_ClassLoader : AllStatic {
1265 private:
1266 enum {
1267 hc_parent_offset = 0
1268 };
1270 static bool offsets_computed;
1271 static int parent_offset;
1272 static int parallelCapable_offset;
1274 static void compute_offsets();
1276 public:
1277 static oop parent(oop loader);
1279 // Support for parallelCapable field
1280 static bool parallelCapable(oop the_class_mirror);
1282 static bool is_trusted_loader(oop loader);
1284 // Fix for 4474172
1285 static oop non_reflection_class_loader(oop loader);
1287 // Debugging
1288 friend class JavaClasses;
1289 };
1292 // Interface to java.lang.System objects
1294 class java_lang_System : AllStatic {
1295 private:
1296 enum {
1297 hc_static_in_offset = 0,
1298 hc_static_out_offset = 1,
1299 hc_static_err_offset = 2
1300 };
1302 static int static_in_offset;
1303 static int static_out_offset;
1304 static int static_err_offset;
1306 public:
1307 static int in_offset_in_bytes();
1308 static int out_offset_in_bytes();
1309 static int err_offset_in_bytes();
1311 // Debugging
1312 friend class JavaClasses;
1313 };
1316 // Interface to java.lang.StackTraceElement objects
1318 class java_lang_StackTraceElement: AllStatic {
1319 private:
1320 enum {
1321 hc_declaringClass_offset = 0,
1322 hc_methodName_offset = 1,
1323 hc_fileName_offset = 2,
1324 hc_lineNumber_offset = 3
1325 };
1327 static int declaringClass_offset;
1328 static int methodName_offset;
1329 static int fileName_offset;
1330 static int lineNumber_offset;
1332 public:
1333 // Setters
1334 static void set_declaringClass(oop element, oop value);
1335 static void set_methodName(oop element, oop value);
1336 static void set_fileName(oop element, oop value);
1337 static void set_lineNumber(oop element, int value);
1339 // Create an instance of StackTraceElement
1340 static oop create(methodHandle m, int bci, TRAPS);
1342 // Debugging
1343 friend class JavaClasses;
1344 };
1347 // Interface to java.lang.AssertionStatusDirectives objects
1349 class java_lang_AssertionStatusDirectives: AllStatic {
1350 private:
1351 enum {
1352 hc_classes_offset,
1353 hc_classEnabled_offset,
1354 hc_packages_offset,
1355 hc_packageEnabled_offset,
1356 hc_deflt_offset
1357 };
1359 static int classes_offset;
1360 static int classEnabled_offset;
1361 static int packages_offset;
1362 static int packageEnabled_offset;
1363 static int deflt_offset;
1365 public:
1366 // Setters
1367 static void set_classes(oop obj, oop val);
1368 static void set_classEnabled(oop obj, oop val);
1369 static void set_packages(oop obj, oop val);
1370 static void set_packageEnabled(oop obj, oop val);
1371 static void set_deflt(oop obj, bool val);
1372 // Debugging
1373 friend class JavaClasses;
1374 };
1377 class java_nio_Buffer: AllStatic {
1378 private:
1379 static int _limit_offset;
1381 public:
1382 static int limit_offset();
1383 static void compute_offsets();
1384 };
1386 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1387 private:
1388 static int _owner_offset;
1389 public:
1390 static void initialize(TRAPS);
1391 static oop get_owner_threadObj(oop obj);
1392 };
1394 // Use to declare fields that need to be injected into Java classes
1395 // for the JVM to use. The name_index and signature_index are
1396 // declared in vmSymbols. The may_be_java flag is used to declare
1397 // fields that might already exist in Java but should be injected if
1398 // they don't. Otherwise the field is unconditionally injected and
1399 // the JVM uses the injected one. This is to ensure that name
1400 // collisions don't occur. In general may_be_java should be false
1401 // unless there's a good reason.
1403 class InjectedField {
1404 public:
1405 const SystemDictionary::WKID klass_id;
1406 const vmSymbols::SID name_index;
1407 const vmSymbols::SID signature_index;
1408 const bool may_be_java;
1411 klassOop klass() const { return SystemDictionary::well_known_klass(klass_id); }
1412 Symbol* name() const { return lookup_symbol(name_index); }
1413 Symbol* signature() const { return lookup_symbol(signature_index); }
1415 int compute_offset();
1417 // Find the Symbol for this index
1418 static Symbol* lookup_symbol(int symbol_index) {
1419 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1420 }
1421 };
1423 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1424 klass##_##name##_enum,
1426 #define ALL_INJECTED_FIELDS(macro) \
1427 CLASS_INJECTED_FIELDS(macro) \
1428 METHODHANDLE_INJECTED_FIELDS(macro) \
1429 DIRECTMETHODHANDLE_INJECTED_FIELDS(macro) \
1430 MEMBERNAME_INJECTED_FIELDS(macro) \
1431 METHODTYPEFORM_INJECTED_FIELDS(macro)
1433 // Interface to hard-coded offset checking
1435 class JavaClasses : AllStatic {
1436 private:
1438 static InjectedField _injected_fields[];
1440 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1441 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1442 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1444 public:
1445 enum InjectedFieldID {
1446 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1447 MAX_enum
1448 };
1450 static int compute_injected_offset(InjectedFieldID id);
1452 static void compute_hard_coded_offsets();
1453 static void compute_offsets();
1454 static void check_offsets() PRODUCT_RETURN;
1456 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1457 };
1459 #undef DECLARE_INJECTED_FIELD_ENUM
1461 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP