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 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
75
76 // Instance creation
77 static Handle create_from_unicode(jchar* unicode, int len, TRAPS);
78 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS);
79 static Handle create_from_str(const char* utf8_str, TRAPS);
80 static oop create_oop_from_str(const char* utf8_str, TRAPS);
81 static Handle create_from_symbol(Symbol* symbol, TRAPS);
82 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
83 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
84
85 static void set_compact_strings(bool value);
86
87 static int value_offset_in_bytes() {
88 assert(initialized && (value_offset > 0), "Must be initialized");
89 return value_offset;
90 }
91 static int hash_offset_in_bytes() {
92 assert(initialized && (hash_offset > 0), "Must be initialized");
93 return hash_offset;
94 }
207 static GrowableArray<Klass*>* _fixup_mirror_list;
208 static GrowableArray<Klass*>* _fixup_module_field_list;
209
210 static void set_init_lock(oop java_class, oop init_lock);
211 static void set_protection_domain(oop java_class, oop protection_domain);
212 static void set_class_loader(oop java_class, oop class_loader);
213 static void set_component_mirror(oop java_class, oop comp_mirror);
214 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
215 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
216 public:
217 static void allocate_fixup_lists();
218 static void compute_offsets();
219
220 // Instance creation
221 static void create_mirror(Klass* k, Handle class_loader, Handle module,
222 Handle protection_domain, TRAPS);
223 static void fixup_mirror(Klass* k, TRAPS);
224 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
225
226 // Archiving
227 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
228 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
229 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
230 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
231 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
232 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
233 Handle protection_domain,
234 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
235
236 static void fixup_module_field(Klass* k, Handle module);
237
238 // Conversion
239 static Klass* as_Klass(oop java_class);
240 static void set_klass(oop java_class, Klass* klass);
241 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
242 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
243 static void print_signature(oop java_class, outputStream *st);
244 static const char* as_external_name(oop java_class);
245 // Testing
246 static bool is_instance(oop obj);
247
300 private:
301 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
302 // so we compute the offsets at startup rather than hard-wiring them.
303 static int _name_offset;
304 static int _group_offset;
305 static int _contextClassLoader_offset;
306 static int _inheritedAccessControlContext_offset;
307 static int _priority_offset;
308 static int _eetop_offset;
309 static int _daemon_offset;
310 static int _stillborn_offset;
311 static int _stackSize_offset;
312 static int _tid_offset;
313 static int _thread_status_offset;
314 static int _park_blocker_offset;
315 static int _park_event_offset ;
316
317 static void compute_offsets();
318
319 public:
320 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
321
322 // Instance creation
323 static oop create();
324 // Returns the JavaThread associated with the thread obj
325 static JavaThread* thread(oop java_thread);
326 // Set JavaThread for instance
327 static void set_thread(oop java_thread, JavaThread* thread);
328 // Name
329 static oop name(oop java_thread);
330 static void set_name(oop java_thread, oop name);
331 // Priority
332 static ThreadPriority priority(oop java_thread);
333 static void set_priority(oop java_thread, ThreadPriority priority);
334 // Thread group
335 static oop threadGroup(oop java_thread);
336 // Stillborn
337 static bool is_stillborn(oop java_thread);
338 static void set_stillborn(oop java_thread);
339 // Alive (NOTE: this is not really a field, but provides the correct
340 // definition without doing a Java call)
402 friend class JavaClasses;
403 };
404
405 // Interface to java.lang.ThreadGroup objects
406
407 class java_lang_ThreadGroup : AllStatic {
408 private:
409 static int _parent_offset;
410 static int _name_offset;
411 static int _threads_offset;
412 static int _groups_offset;
413 static int _maxPriority_offset;
414 static int _destroyed_offset;
415 static int _daemon_offset;
416 static int _nthreads_offset;
417 static int _ngroups_offset;
418
419 static void compute_offsets();
420
421 public:
422 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
423
424 // parent ThreadGroup
425 static oop parent(oop java_thread_group);
426 // name
427 static const char* name(oop java_thread_group);
428 // ("name as oop" accessor is not necessary)
429 // Number of threads in group
430 static int nthreads(oop java_thread_group);
431 // threads
432 static objArrayOop threads(oop java_thread_group);
433 // Number of threads in group
434 static int ngroups(oop java_thread_group);
435 // groups
436 static objArrayOop groups(oop java_thread_group);
437 // maxPriority in group
438 static ThreadPriority maxPriority(oop java_thread_group);
439 // Destroyed
440 static bool is_destroyed(oop java_thread_group);
441 // Daemon
442 static bool is_daemon(oop java_thread_group);
483 static void set_stacktrace(oop throwable, oop st_element_array);
484 static oop unassigned_stacktrace();
485
486 public:
487 // Backtrace
488 static oop backtrace(oop throwable);
489 static void set_backtrace(oop throwable, oop value);
490 static int depth(oop throwable);
491 static void set_depth(oop throwable, int value);
492 // Needed by JVMTI to filter out this internal field.
493 static int get_backtrace_offset() { return backtrace_offset;}
494 static int get_detailMessage_offset() { return detailMessage_offset;}
495 // Message
496 static oop message(oop throwable);
497 static void set_message(oop throwable, oop value);
498 static Symbol* detail_message(oop throwable);
499 static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
500 static void print_stack_usage(Handle stream);
501
502 static void compute_offsets();
503 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
504
505 // Allocate space for backtrace (created but stack trace not filled in)
506 static void allocate_backtrace(Handle throwable, TRAPS);
507 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
508 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
509 // Fill in current stack trace, can cause GC
510 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
511 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
512 // Programmatic access to stack trace
513 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
514 // Printing
515 static void print(oop throwable, outputStream* st);
516 static void print_stack_trace(Handle throwable, outputStream* st);
517 static void java_printStackTrace(Handle throwable, TRAPS);
518 // Debugging
519 friend class JavaClasses;
520 };
521
522
523 // Interface to java.lang.reflect.AccessibleObject objects
524
525 class java_lang_reflect_AccessibleObject: AllStatic {
526 private:
527 // Note that to reduce dependencies on the JDK we compute these
528 // offsets at run-time.
529 static int override_offset;
530
531 static void compute_offsets();
532
533 public:
534 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
535
536 // Accessors
537 static jboolean override(oop reflect);
538 static void set_override(oop reflect, jboolean value);
539
540 // Debugging
541 friend class JavaClasses;
542 };
543
544
545 // Interface to java.lang.reflect.Method objects
546
547 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
548 private:
549 // Note that to reduce dependencies on the JDK we compute these
550 // offsets at run-time.
551 static int clazz_offset;
552 static int name_offset;
553 static int returnType_offset;
554 static int parameterTypes_offset;
555 static int exceptionTypes_offset;
556 static int slot_offset;
557 static int modifiers_offset;
558 static int signature_offset;
559 static int annotations_offset;
560 static int parameter_annotations_offset;
561 static int annotation_default_offset;
562 static int type_annotations_offset;
563
564 static void compute_offsets();
565
566 public:
567 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
568
569 // Allocation
570 static Handle create(TRAPS);
571
572 // Accessors
573 static oop clazz(oop reflect);
574 static void set_clazz(oop reflect, oop value);
575
576 static oop name(oop method);
577 static void set_name(oop method, oop value);
578
579 static oop return_type(oop method);
580 static void set_return_type(oop method, oop value);
581
582 static oop parameter_types(oop method);
583 static void set_parameter_types(oop method, oop value);
584
585 static oop exception_types(oop method);
586 static void set_exception_types(oop method, oop value);
587
618
619 // Interface to java.lang.reflect.Constructor objects
620
621 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
622 private:
623 // Note that to reduce dependencies on the JDK we compute these
624 // offsets at run-time.
625 static int clazz_offset;
626 static int parameterTypes_offset;
627 static int exceptionTypes_offset;
628 static int slot_offset;
629 static int modifiers_offset;
630 static int signature_offset;
631 static int annotations_offset;
632 static int parameter_annotations_offset;
633 static int type_annotations_offset;
634
635 static void compute_offsets();
636
637 public:
638 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
639
640 // Allocation
641 static Handle create(TRAPS);
642
643 // Accessors
644 static oop clazz(oop reflect);
645 static void set_clazz(oop reflect, oop value);
646
647 static oop parameter_types(oop constructor);
648 static void set_parameter_types(oop constructor, oop value);
649
650 static oop exception_types(oop constructor);
651 static void set_exception_types(oop constructor, oop value);
652
653 static int slot(oop reflect);
654 static void set_slot(oop reflect, int value);
655
656 static int modifiers(oop constructor);
657 static void set_modifiers(oop constructor, int value);
658
678
679
680 // Interface to java.lang.reflect.Field objects
681
682 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
683 private:
684 // Note that to reduce dependencies on the JDK we compute these
685 // offsets at run-time.
686 static int clazz_offset;
687 static int name_offset;
688 static int type_offset;
689 static int slot_offset;
690 static int modifiers_offset;
691 static int signature_offset;
692 static int annotations_offset;
693 static int type_annotations_offset;
694
695 static void compute_offsets();
696
697 public:
698 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
699
700 // Allocation
701 static Handle create(TRAPS);
702
703 // Accessors
704 static oop clazz(oop reflect);
705 static void set_clazz(oop reflect, oop value);
706
707 static oop name(oop field);
708 static void set_name(oop field, oop value);
709
710 static oop type(oop field);
711 static void set_type(oop field, oop value);
712
713 static int slot(oop reflect);
714 static void set_slot(oop reflect, int value);
715
716 static int modifiers(oop field);
717 static void set_modifiers(oop field, int value);
718
735 static bool has_type_annotations_field();
736 static oop type_annotations(oop field);
737 static void set_type_annotations(oop field, oop value);
738
739 // Debugging
740 friend class JavaClasses;
741 };
742
743 class java_lang_reflect_Parameter {
744 private:
745 // Note that to reduce dependencies on the JDK we compute these
746 // offsets at run-time.
747 static int name_offset;
748 static int modifiers_offset;
749 static int index_offset;
750 static int executable_offset;
751
752 static void compute_offsets();
753
754 public:
755 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
756
757 // Allocation
758 static Handle create(TRAPS);
759
760 // Accessors
761 static oop name(oop field);
762 static void set_name(oop field, oop value);
763
764 static int index(oop reflect);
765 static void set_index(oop reflect, int value);
766
767 static int modifiers(oop reflect);
768 static void set_modifiers(oop reflect, int value);
769
770 static oop executable(oop constructor);
771 static void set_executable(oop constructor, oop value);
772
773 friend class JavaClasses;
774 };
775
776 #define MODULE_INJECTED_FIELDS(macro) \
777 macro(java_lang_Module, module_entry, intptr_signature, false)
778
779 class java_lang_Module {
780 private:
781 static int loader_offset;
782 static int name_offset;
783 static int _module_entry_offset;
784 static void compute_offsets();
785
786 public:
787 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
788
789 // Allocation
790 static Handle create(Handle loader, Handle module_name, TRAPS);
791
792 // Testers
793 static bool is_instance(oop obj);
794
795 // Accessors
796 static oop loader(oop module);
797 static void set_loader(oop module, oop value);
798
799 static oop name(oop module);
800 static void set_name(oop module, oop value);
801
802 static ModuleEntry* module_entry(oop module);
803 static void set_module_entry(oop module, ModuleEntry* module_entry);
804
805 friend class JavaClasses;
806 };
807
808 // Interface to jdk.internal.reflect.ConstantPool objects
809 class reflect_ConstantPool {
810 private:
811 // Note that to reduce dependencies on the JDK we compute these
812 // offsets at run-time.
813 static int _oop_offset;
814
815 static void compute_offsets();
816
817 public:
818 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
819
820 // Allocation
821 static Handle create(TRAPS);
822
823 // Accessors
824 static void set_cp(oop reflect, ConstantPool* value);
825 static int oop_offset() {
826 return _oop_offset;
827 }
828
829 static ConstantPool* get_cp(oop reflect);
830
831 // Debugging
832 friend class JavaClasses;
833 };
834
835 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
836 class reflect_UnsafeStaticFieldAccessorImpl {
837 private:
838 static int _base_offset;
839 static void compute_offsets();
840
841 public:
842 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
843
844 static int base_offset() {
845 return _base_offset;
846 }
847
848 // Debugging
849 friend class JavaClasses;
850 };
851
852 // Interface to java.lang primitive type boxing objects:
853 // - java.lang.Boolean
854 // - java.lang.Character
855 // - java.lang.Float
856 // - java.lang.Double
857 // - java.lang.Byte
858 // - java.lang.Short
859 // - java.lang.Integer
860 // - java.lang.Long
861
862 // This could be separated out into 8 individual classes.
927 static bool is_referent_field(oop obj, ptrdiff_t offset);
928 static inline bool is_phantom(oop ref);
929 };
930
931
932 // Interface to java.lang.ref.SoftReference objects
933
934 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
935 public:
936 static int timestamp_offset;
937 static int static_clock_offset;
938
939 // Accessors
940 static jlong timestamp(oop ref);
941
942 // Accessors for statics
943 static jlong clock();
944 static void set_clock(jlong value);
945
946 static void compute_offsets();
947 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
948 };
949
950 // Interface to java.lang.invoke.MethodHandle objects
951
952 class MethodHandleEntry;
953
954 class java_lang_invoke_MethodHandle: AllStatic {
955 friend class JavaClasses;
956
957 private:
958 static int _type_offset; // the MethodType of this MH
959 static int _form_offset; // the LambdaForm of this MH
960
961 static void compute_offsets();
962
963 public:
964 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
965
966 // Accessors
967 static oop type(oop mh);
968 static void set_type(oop mh, oop mtype);
969
970 static oop form(oop mh);
971 static void set_form(oop mh, oop lform);
972
973 // Testers
974 static bool is_subclass(Klass* klass) {
975 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
976 }
977 static bool is_instance(oop obj);
978
979 // Accessors for code generation:
980 static int type_offset_in_bytes() { return _type_offset; }
981 static int form_offset_in_bytes() { return _form_offset; }
982 };
983
984 // Interface to java.lang.invoke.DirectMethodHandle objects
985
986 class java_lang_invoke_DirectMethodHandle: AllStatic {
987 friend class JavaClasses;
988
989 private:
990 static int _member_offset; // the MemberName of this DMH
991
992 static void compute_offsets();
993
994 public:
995 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
996
997 // Accessors
998 static oop member(oop mh);
999
1000 // Testers
1001 static bool is_subclass(Klass* klass) {
1002 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1003 }
1004 static bool is_instance(oop obj);
1005
1006 // Accessors for code generation:
1007 static int member_offset_in_bytes() { return _member_offset; }
1008 };
1009
1010 // Interface to java.lang.invoke.LambdaForm objects
1011 // (These are a private interface for managing adapter code generation.)
1012
1013 class java_lang_invoke_LambdaForm: AllStatic {
1014 friend class JavaClasses;
1015
1016 private:
1017 static int _vmentry_offset; // type is MemberName
1018
1019 static void compute_offsets();
1020
1021 public:
1022 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1023
1024 // Accessors
1025 static oop vmentry(oop lform);
1026 static void set_vmentry(oop lform, oop invoker);
1027
1028 // Testers
1029 static bool is_subclass(Klass* klass) {
1030 return SystemDictionary::LambdaForm_klass() != NULL &&
1031 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1032 }
1033 static bool is_instance(oop obj);
1034
1035 // Accessors for code generation:
1036 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1037 };
1038
1039
1040 // Interface to java.lang.invoke.MemberName objects
1041 // (These are a private interface for Java code to query the class hierarchy.)
1042
1043 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1044 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1045 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1046
1047 class java_lang_invoke_ResolvedMethodName : AllStatic {
1048 friend class JavaClasses;
1049
1050 static int _vmtarget_offset;
1051 static int _vmholder_offset;
1052
1053 static void compute_offsets();
1054 public:
1055 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1056
1057 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1058
1059 static Method* vmtarget(oop resolved_method);
1060 static void set_vmtarget(oop resolved_method, Method* method);
1061
1062 // find or create resolved member name
1063 static oop find_resolved_method(const methodHandle& m, TRAPS);
1064
1065 static bool is_instance(oop resolved_method);
1066 };
1067
1068
1069 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1070 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1071
1072
1073 class java_lang_invoke_MemberName: AllStatic {
1074 friend class JavaClasses;
1075
1076 private:
1077 // From java.lang.invoke.MemberName:
1078 // private Class<?> clazz; // class in which the method is defined
1079 // private String name; // may be null if not yet materialized
1080 // private Object type; // may be null if not yet materialized
1081 // private int flags; // modifier bits; see reflect.Modifier
1082 // private ResolvedMethodName method; // holds VM-specific target value
1083 // private intptr_t vmindex; // member index within class or interface
1084 static int _clazz_offset;
1085 static int _name_offset;
1086 static int _type_offset;
1087 static int _flags_offset;
1088 static int _method_offset;
1089 static int _vmindex_offset;
1090
1091 static void compute_offsets();
1092
1093 public:
1094 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1095 // Accessors
1096 static oop clazz(oop mname);
1097 static void set_clazz(oop mname, oop clazz);
1098
1099 static oop type(oop mname);
1100 static void set_type(oop mname, oop type);
1101
1102 static oop name(oop mname);
1103 static void set_name(oop mname, oop name);
1104
1105 static int flags(oop mname);
1106 static void set_flags(oop mname, int flags);
1107
1108 // Link through ResolvedMethodName field to get Method*
1109 static Method* vmtarget(oop mname);
1110 static void set_method(oop mname, oop method);
1111
1112 static intptr_t vmindex(oop mname);
1113 static void set_vmindex(oop mname, intptr_t index);
1114
1139 static int type_offset_in_bytes() { return _type_offset; }
1140 static int name_offset_in_bytes() { return _name_offset; }
1141 static int flags_offset_in_bytes() { return _flags_offset; }
1142 static int method_offset_in_bytes() { return _method_offset; }
1143 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1144 };
1145
1146
1147 // Interface to java.lang.invoke.MethodType objects
1148
1149 class java_lang_invoke_MethodType: AllStatic {
1150 friend class JavaClasses;
1151
1152 private:
1153 static int _rtype_offset;
1154 static int _ptypes_offset;
1155
1156 static void compute_offsets();
1157
1158 public:
1159 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1160 // Accessors
1161 static oop rtype(oop mt);
1162 static objArrayOop ptypes(oop mt);
1163
1164 static oop ptype(oop mt, int index);
1165 static int ptype_count(oop mt);
1166
1167 static int ptype_slot_count(oop mt); // extra counts for long/double
1168 static int rtype_slot_count(oop mt); // extra counts for long/double
1169
1170 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1171 static void print_signature(oop mt, outputStream* st);
1172
1173 static bool is_instance(oop obj);
1174
1175 static bool equals(oop mt1, oop mt2);
1176
1177 // Accessors for code generation:
1178 static int rtype_offset_in_bytes() { return _rtype_offset; }
1179 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1180 };
1181
1182
1183 // Interface to java.lang.invoke.CallSite objects
1184
1185 class java_lang_invoke_CallSite: AllStatic {
1186 friend class JavaClasses;
1187
1188 private:
1189 static int _target_offset;
1190 static int _context_offset;
1191
1192 static void compute_offsets();
1193
1194 public:
1195 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1196 // Accessors
1197 static oop target( oop site);
1198 static void set_target( oop site, oop target);
1199 static void set_target_volatile( oop site, oop target);
1200
1201 static oop context(oop site);
1202
1203 // Testers
1204 static bool is_subclass(Klass* klass) {
1205 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1206 }
1207 static bool is_instance(oop obj);
1208
1209 // Accessors for code generation:
1210 static int target_offset_in_bytes() { return _target_offset; }
1211 };
1212
1213 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1214
1215 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1216 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false)
1217
1218 class DependencyContext;
1219
1220 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1221 friend class JavaClasses;
1222
1223 private:
1224 static int _vmdependencies_offset;
1225
1226 static void compute_offsets();
1227
1228 public:
1229 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1230 // Accessors
1231 static DependencyContext vmdependencies(oop context);
1232
1233 // Testers
1234 static bool is_subclass(Klass* klass) {
1235 return klass->is_subclass_of(SystemDictionary::Context_klass());
1236 }
1237 static bool is_instance(oop obj);
1238 };
1239
1240 // Interface to java.security.AccessControlContext objects
1241
1242 class java_security_AccessControlContext: AllStatic {
1243 private:
1244 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1245 // so we compute the offsets at startup rather than hard-wiring them.
1246 static int _context_offset;
1247 static int _privilegedContext_offset;
1248 static int _isPrivileged_offset;
1249 static int _isAuthorized_offset;
1250
1251 static void compute_offsets();
1252 public:
1253 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1254 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1255
1256 static bool is_authorized(Handle context);
1257
1258 // Debugging/initialization
1259 friend class JavaClasses;
1260 };
1261
1262
1263 // Interface to java.lang.ClassLoader objects
1264
1265 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1266 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1267
1268 class java_lang_ClassLoader : AllStatic {
1269 private:
1270 static int _loader_data_offset;
1271 static bool offsets_computed;
1272 static int parent_offset;
1273 static int parallelCapable_offset;
1274 static int name_offset;
1275 static int nameAndId_offset;
1276 static int unnamedModule_offset;
1277
1278 public:
1279 static void compute_offsets();
1280 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1281
1282 static ClassLoaderData* loader_data(oop loader);
1283 static ClassLoaderData* cmpxchg_loader_data(ClassLoaderData* new_data, oop loader, ClassLoaderData* expected_data);
1284
1285 static oop parent(oop loader);
1286 static oop name(oop loader);
1287 static oop nameAndId(oop loader);
1288 static bool isAncestor(oop loader, oop cl);
1289
1290 // Support for parallelCapable field
1291 static bool parallelCapable(oop the_class_mirror);
1292
1293 static bool is_trusted_loader(oop loader);
1294
1295 // Return true if this is one of the class loaders associated with
1296 // the generated bytecodes for reflection.
1297 static bool is_reflection_class_loader(oop loader);
1298
1299 // Fix for 4474172
1300 static oop non_reflection_class_loader(oop loader);
1313 };
1314
1315
1316 // Interface to java.lang.System objects
1317
1318 class java_lang_System : AllStatic {
1319 private:
1320 static int static_in_offset;
1321 static int static_out_offset;
1322 static int static_err_offset;
1323 static int static_security_offset;
1324
1325 public:
1326 static int in_offset_in_bytes();
1327 static int out_offset_in_bytes();
1328 static int err_offset_in_bytes();
1329
1330 static bool has_security_manager();
1331
1332 static void compute_offsets();
1333 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1334
1335 // Debugging
1336 friend class JavaClasses;
1337 };
1338
1339
1340 // Interface to java.lang.StackTraceElement objects
1341
1342 class java_lang_StackTraceElement: AllStatic {
1343 private:
1344 static int declaringClassObject_offset;
1345 static int classLoaderName_offset;
1346 static int moduleName_offset;
1347 static int moduleVersion_offset;
1348 static int declaringClass_offset;
1349 static int methodName_offset;
1350 static int fileName_offset;
1351 static int lineNumber_offset;
1352
1353 // Setters
1354 static void set_classLoaderName(oop element, oop value);
1355 static void set_moduleName(oop element, oop value);
1356 static void set_moduleVersion(oop element, oop value);
1357 static void set_declaringClass(oop element, oop value);
1358 static void set_methodName(oop element, oop value);
1359 static void set_fileName(oop element, oop value);
1360 static void set_lineNumber(oop element, int value);
1361 static void set_declaringClassObject(oop element, oop value);
1362
1363 public:
1364 // Create an instance of StackTraceElement
1365 static oop create(const methodHandle& method, int bci, TRAPS);
1366
1367 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1368 int version, int bci, Symbol* name, TRAPS);
1369
1370 static void compute_offsets();
1371 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1372
1373 // Debugging
1374 friend class JavaClasses;
1375 };
1376
1377
1378 class Backtrace: AllStatic {
1379 public:
1380 // Helper backtrace functions to store bci|version together.
1381 static int merge_bci_and_version(int bci, int version);
1382 static int merge_mid_and_cpref(int mid, int cpref);
1383 static int bci_at(unsigned int merged);
1384 static int version_at(unsigned int merged);
1385 static int mid_at(unsigned int merged);
1386 static int cpref_at(unsigned int merged);
1387 static int get_line_number(const methodHandle& method, int bci);
1388 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1389
1390 // Debugging
1391 friend class JavaClasses;
1395
1396 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1397 macro(java_lang_StackFrameInfo, version, short_signature, false)
1398
1399 class java_lang_StackFrameInfo: AllStatic {
1400 private:
1401 static int _memberName_offset;
1402 static int _bci_offset;
1403 static int _version_offset;
1404
1405 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1406
1407 public:
1408 // Setters
1409 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1410 static void set_bci(oop info, int value);
1411
1412 static void set_version(oop info, short value);
1413
1414 static void compute_offsets();
1415 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1416
1417 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1418
1419 // Debugging
1420 friend class JavaClasses;
1421 };
1422
1423 class java_lang_LiveStackFrameInfo: AllStatic {
1424 private:
1425 static int _monitors_offset;
1426 static int _locals_offset;
1427 static int _operands_offset;
1428 static int _mode_offset;
1429
1430 public:
1431 static void set_monitors(oop info, oop value);
1432 static void set_locals(oop info, oop value);
1433 static void set_operands(oop info, oop value);
1434 static void set_mode(oop info, int value);
1435
1436 static void compute_offsets();
1437 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1438
1439 // Debugging
1440 friend class JavaClasses;
1441 };
1442
1443 // Interface to java.lang.AssertionStatusDirectives objects
1444
1445 class java_lang_AssertionStatusDirectives: AllStatic {
1446 private:
1447 static int classes_offset;
1448 static int classEnabled_offset;
1449 static int packages_offset;
1450 static int packageEnabled_offset;
1451 static int deflt_offset;
1452
1453 public:
1454 // Setters
1455 static void set_classes(oop obj, oop val);
1456 static void set_classEnabled(oop obj, oop val);
1457 static void set_packages(oop obj, oop val);
1458 static void set_packageEnabled(oop obj, oop val);
1459 static void set_deflt(oop obj, bool val);
1460
1461 static void compute_offsets();
1462 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1463
1464 // Debugging
1465 friend class JavaClasses;
1466 };
1467
1468
1469 class java_nio_Buffer: AllStatic {
1470 private:
1471 static int _limit_offset;
1472
1473 public:
1474 static int limit_offset();
1475 static void compute_offsets();
1476 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1477 };
1478
1479 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1480 private:
1481 static int _owner_offset;
1482 public:
1483 static void compute_offsets();
1484 static oop get_owner_threadObj(oop obj);
1485 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1486 };
1487
1488 class java_lang_Integer_IntegerCache: AllStatic {
1489 private:
1490 static int _archivedCache_offset;
1491 public:
1492 static int archivedCache_offset() { return _archivedCache_offset; }
1493 static void compute_offsets();
1494 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1495 };
1496
1497 class jdk_internal_module_ArchivedModuleGraph: AllStatic {
1498 private:
1499 static int _archivedSystemModules_offset;
1500 static int _archivedModuleFinder_offset;
1501 static int _archivedMainModule_offset;
1502 static int _archivedConfiguration_offset;
1503 public:
1504 static int archivedSystemModules_offset() { return _archivedSystemModules_offset; }
1505 static int archivedModuleFinder_offset() { return _archivedModuleFinder_offset; }
1506 static int archivedMainModule_offset() { return _archivedMainModule_offset; }
1507 static int archivedConfiguration_offset() { return _archivedConfiguration_offset; }
1508 static void compute_offsets();
1509 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1510 };
1511
1512 class java_lang_module_Configuration: AllStatic {
1513 private:
1514 static int _EMPTY_CONFIGURATION_offset;
1515 public:
1516 static int EMPTY_CONFIGURATION_offset() { return _EMPTY_CONFIGURATION_offset; }
1517 static void compute_offsets();
1518 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1519 };
1520
1521 class java_util_ImmutableCollections_ListN : AllStatic {
1522 private:
1523 static int _EMPTY_LIST_offset;
1524 public:
1525 static int EMPTY_LIST_offset() { return _EMPTY_LIST_offset; }
1526 static void compute_offsets();
1527 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1528 };
1529
1530 class java_util_ImmutableCollections_SetN : AllStatic {
1531 private:
1532 static int _EMPTY_SET_offset;
1533 public:
1534 static int EMPTY_SET_offset() { return _EMPTY_SET_offset; }
1535 static void compute_offsets();
1536 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1537 };
1538
1539 class java_util_ImmutableCollections_MapN : AllStatic {
1540 private:
1541 static int _EMPTY_MAP_offset;
1542 public:
1543 static int EMPTY_MAP_offset() { return _EMPTY_MAP_offset; }
1544 static void compute_offsets();
1545 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1546 };
1547
1548 // Use to declare fields that need to be injected into Java classes
1549 // for the JVM to use. The name_index and signature_index are
1550 // declared in vmSymbols. The may_be_java flag is used to declare
1551 // fields that might already exist in Java but should be injected if
1552 // they don't. Otherwise the field is unconditionally injected and
1553 // the JVM uses the injected one. This is to ensure that name
1554 // collisions don't occur. In general may_be_java should be false
1555 // unless there's a good reason.
1556
1557 class InjectedField {
1558 public:
1559 const SystemDictionary::WKID klass_id;
1560 const vmSymbols::SID name_index;
1561 const vmSymbols::SID signature_index;
1562 const bool may_be_java;
1563
1564
1565 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1588
1589 // Interface to hard-coded offset checking
1590
1591 class JavaClasses : AllStatic {
1592 private:
1593
1594 static InjectedField _injected_fields[];
1595
1596 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1597 public:
1598 enum InjectedFieldID {
1599 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1600 MAX_enum
1601 };
1602
1603 static int compute_injected_offset(InjectedFieldID id);
1604
1605 static void compute_hard_coded_offsets();
1606 static void compute_offsets();
1607 static void check_offsets() PRODUCT_RETURN;
1608
1609 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1610 };
1611
1612 #undef DECLARE_INJECTED_FIELD_ENUM
1613
1614 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP
|
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 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
51 f(java_lang_Class) \
52 f(java_lang_String) \
53 //end
54
55 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
56 f(java_lang_System) \
57 f(java_lang_ClassLoader) \
58 f(java_lang_Throwable) \
59 f(java_lang_Thread) \
60 f(java_lang_ThreadGroup) \
61 f(java_lang_AssertionStatusDirectives) \
62 f(java_lang_ref_SoftReference) \
63 f(java_lang_invoke_MethodHandle) \
64 f(java_lang_invoke_DirectMethodHandle) \
65 f(java_lang_invoke_MemberName) \
66 f(java_lang_invoke_ResolvedMethodName) \
67 f(java_lang_invoke_LambdaForm) \
68 f(java_lang_invoke_MethodType) \
69 f(java_lang_invoke_CallSite) \
70 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
71 f(java_security_AccessControlContext) \
72 f(java_lang_reflect_AccessibleObject) \
73 f(java_lang_reflect_Method) \
74 f(java_lang_reflect_Constructor) \
75 f(java_lang_reflect_Field) \
76 f(java_nio_Buffer) \
77 f(reflect_ConstantPool) \
78 f(reflect_UnsafeStaticFieldAccessorImpl) \
79 f(java_lang_reflect_Parameter) \
80 f(java_lang_Module) \
81 f(java_lang_StackTraceElement) \
82 f(java_lang_StackFrameInfo) \
83 f(java_lang_LiveStackFrameInfo) \
84 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
85 f(jdk_internal_module_ArchivedModuleGraph) \
86 f(java_lang_Integer_IntegerCache) \
87 f(java_lang_module_Configuration) \
88 f(java_util_ImmutableCollections_ListN) \
89 f(java_util_ImmutableCollections_MapN) \
90 f(java_util_ImmutableCollections_SetN) \
91 //end
92
93 #define BASIC_JAVA_CLASSES_DO(f) \
94 BASIC_JAVA_CLASSES_DO_PART1(f) \
95 BASIC_JAVA_CLASSES_DO_PART2(f)
96
97 // Interface to java.lang.String objects
98
99 class java_lang_String : AllStatic {
100 private:
101 static int value_offset;
102 static int hash_offset;
103 static int coder_offset;
104
105 static bool initialized;
106
107 static Handle basic_create(int length, bool byte_arr, TRAPS);
108
109 static inline void set_coder(oop string, jbyte coder);
110
111 public:
112
113 // Coders
114 enum Coder {
115 CODER_LATIN1 = 0,
116 CODER_UTF16 = 1
117 };
118
119 static void compute_offsets();
120 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
121
122 // Instance creation
123 static Handle create_from_unicode(jchar* unicode, int len, TRAPS);
124 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS);
125 static Handle create_from_str(const char* utf8_str, TRAPS);
126 static oop create_oop_from_str(const char* utf8_str, TRAPS);
127 static Handle create_from_symbol(Symbol* symbol, TRAPS);
128 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
129 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
130
131 static void set_compact_strings(bool value);
132
133 static int value_offset_in_bytes() {
134 assert(initialized && (value_offset > 0), "Must be initialized");
135 return value_offset;
136 }
137 static int hash_offset_in_bytes() {
138 assert(initialized && (hash_offset > 0), "Must be initialized");
139 return hash_offset;
140 }
253 static GrowableArray<Klass*>* _fixup_mirror_list;
254 static GrowableArray<Klass*>* _fixup_module_field_list;
255
256 static void set_init_lock(oop java_class, oop init_lock);
257 static void set_protection_domain(oop java_class, oop protection_domain);
258 static void set_class_loader(oop java_class, oop class_loader);
259 static void set_component_mirror(oop java_class, oop comp_mirror);
260 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
261 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
262 public:
263 static void allocate_fixup_lists();
264 static void compute_offsets();
265
266 // Instance creation
267 static void create_mirror(Klass* k, Handle class_loader, Handle module,
268 Handle protection_domain, TRAPS);
269 static void fixup_mirror(Klass* k, TRAPS);
270 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
271
272 // Archiving
273 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
274 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
275 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
276 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
277 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
278 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
279 Handle protection_domain,
280 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
281
282 static void fixup_module_field(Klass* k, Handle module);
283
284 // Conversion
285 static Klass* as_Klass(oop java_class);
286 static void set_klass(oop java_class, Klass* klass);
287 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
288 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
289 static void print_signature(oop java_class, outputStream *st);
290 static const char* as_external_name(oop java_class);
291 // Testing
292 static bool is_instance(oop obj);
293
346 private:
347 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
348 // so we compute the offsets at startup rather than hard-wiring them.
349 static int _name_offset;
350 static int _group_offset;
351 static int _contextClassLoader_offset;
352 static int _inheritedAccessControlContext_offset;
353 static int _priority_offset;
354 static int _eetop_offset;
355 static int _daemon_offset;
356 static int _stillborn_offset;
357 static int _stackSize_offset;
358 static int _tid_offset;
359 static int _thread_status_offset;
360 static int _park_blocker_offset;
361 static int _park_event_offset ;
362
363 static void compute_offsets();
364
365 public:
366 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
367
368 // Instance creation
369 static oop create();
370 // Returns the JavaThread associated with the thread obj
371 static JavaThread* thread(oop java_thread);
372 // Set JavaThread for instance
373 static void set_thread(oop java_thread, JavaThread* thread);
374 // Name
375 static oop name(oop java_thread);
376 static void set_name(oop java_thread, oop name);
377 // Priority
378 static ThreadPriority priority(oop java_thread);
379 static void set_priority(oop java_thread, ThreadPriority priority);
380 // Thread group
381 static oop threadGroup(oop java_thread);
382 // Stillborn
383 static bool is_stillborn(oop java_thread);
384 static void set_stillborn(oop java_thread);
385 // Alive (NOTE: this is not really a field, but provides the correct
386 // definition without doing a Java call)
448 friend class JavaClasses;
449 };
450
451 // Interface to java.lang.ThreadGroup objects
452
453 class java_lang_ThreadGroup : AllStatic {
454 private:
455 static int _parent_offset;
456 static int _name_offset;
457 static int _threads_offset;
458 static int _groups_offset;
459 static int _maxPriority_offset;
460 static int _destroyed_offset;
461 static int _daemon_offset;
462 static int _nthreads_offset;
463 static int _ngroups_offset;
464
465 static void compute_offsets();
466
467 public:
468 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
469
470 // parent ThreadGroup
471 static oop parent(oop java_thread_group);
472 // name
473 static const char* name(oop java_thread_group);
474 // ("name as oop" accessor is not necessary)
475 // Number of threads in group
476 static int nthreads(oop java_thread_group);
477 // threads
478 static objArrayOop threads(oop java_thread_group);
479 // Number of threads in group
480 static int ngroups(oop java_thread_group);
481 // groups
482 static objArrayOop groups(oop java_thread_group);
483 // maxPriority in group
484 static ThreadPriority maxPriority(oop java_thread_group);
485 // Destroyed
486 static bool is_destroyed(oop java_thread_group);
487 // Daemon
488 static bool is_daemon(oop java_thread_group);
529 static void set_stacktrace(oop throwable, oop st_element_array);
530 static oop unassigned_stacktrace();
531
532 public:
533 // Backtrace
534 static oop backtrace(oop throwable);
535 static void set_backtrace(oop throwable, oop value);
536 static int depth(oop throwable);
537 static void set_depth(oop throwable, int value);
538 // Needed by JVMTI to filter out this internal field.
539 static int get_backtrace_offset() { return backtrace_offset;}
540 static int get_detailMessage_offset() { return detailMessage_offset;}
541 // Message
542 static oop message(oop throwable);
543 static void set_message(oop throwable, oop value);
544 static Symbol* detail_message(oop throwable);
545 static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
546 static void print_stack_usage(Handle stream);
547
548 static void compute_offsets();
549 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
550
551 // Allocate space for backtrace (created but stack trace not filled in)
552 static void allocate_backtrace(Handle throwable, TRAPS);
553 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
554 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
555 // Fill in current stack trace, can cause GC
556 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
557 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
558 // Programmatic access to stack trace
559 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
560 // Printing
561 static void print(oop throwable, outputStream* st);
562 static void print_stack_trace(Handle throwable, outputStream* st);
563 static void java_printStackTrace(Handle throwable, TRAPS);
564 // Debugging
565 friend class JavaClasses;
566 };
567
568
569 // Interface to java.lang.reflect.AccessibleObject objects
570
571 class java_lang_reflect_AccessibleObject: AllStatic {
572 private:
573 // Note that to reduce dependencies on the JDK we compute these
574 // offsets at run-time.
575 static int override_offset;
576
577 static void compute_offsets();
578
579 public:
580 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
581
582 // Accessors
583 static jboolean override(oop reflect);
584 static void set_override(oop reflect, jboolean value);
585
586 // Debugging
587 friend class JavaClasses;
588 };
589
590
591 // Interface to java.lang.reflect.Method objects
592
593 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
594 private:
595 // Note that to reduce dependencies on the JDK we compute these
596 // offsets at run-time.
597 static int clazz_offset;
598 static int name_offset;
599 static int returnType_offset;
600 static int parameterTypes_offset;
601 static int exceptionTypes_offset;
602 static int slot_offset;
603 static int modifiers_offset;
604 static int signature_offset;
605 static int annotations_offset;
606 static int parameter_annotations_offset;
607 static int annotation_default_offset;
608 static int type_annotations_offset;
609
610 static void compute_offsets();
611
612 public:
613 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
614
615 // Allocation
616 static Handle create(TRAPS);
617
618 // Accessors
619 static oop clazz(oop reflect);
620 static void set_clazz(oop reflect, oop value);
621
622 static oop name(oop method);
623 static void set_name(oop method, oop value);
624
625 static oop return_type(oop method);
626 static void set_return_type(oop method, oop value);
627
628 static oop parameter_types(oop method);
629 static void set_parameter_types(oop method, oop value);
630
631 static oop exception_types(oop method);
632 static void set_exception_types(oop method, oop value);
633
664
665 // Interface to java.lang.reflect.Constructor objects
666
667 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
668 private:
669 // Note that to reduce dependencies on the JDK we compute these
670 // offsets at run-time.
671 static int clazz_offset;
672 static int parameterTypes_offset;
673 static int exceptionTypes_offset;
674 static int slot_offset;
675 static int modifiers_offset;
676 static int signature_offset;
677 static int annotations_offset;
678 static int parameter_annotations_offset;
679 static int type_annotations_offset;
680
681 static void compute_offsets();
682
683 public:
684 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
685
686 // Allocation
687 static Handle create(TRAPS);
688
689 // Accessors
690 static oop clazz(oop reflect);
691 static void set_clazz(oop reflect, oop value);
692
693 static oop parameter_types(oop constructor);
694 static void set_parameter_types(oop constructor, oop value);
695
696 static oop exception_types(oop constructor);
697 static void set_exception_types(oop constructor, oop value);
698
699 static int slot(oop reflect);
700 static void set_slot(oop reflect, int value);
701
702 static int modifiers(oop constructor);
703 static void set_modifiers(oop constructor, int value);
704
724
725
726 // Interface to java.lang.reflect.Field objects
727
728 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
729 private:
730 // Note that to reduce dependencies on the JDK we compute these
731 // offsets at run-time.
732 static int clazz_offset;
733 static int name_offset;
734 static int type_offset;
735 static int slot_offset;
736 static int modifiers_offset;
737 static int signature_offset;
738 static int annotations_offset;
739 static int type_annotations_offset;
740
741 static void compute_offsets();
742
743 public:
744 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
745
746 // Allocation
747 static Handle create(TRAPS);
748
749 // Accessors
750 static oop clazz(oop reflect);
751 static void set_clazz(oop reflect, oop value);
752
753 static oop name(oop field);
754 static void set_name(oop field, oop value);
755
756 static oop type(oop field);
757 static void set_type(oop field, oop value);
758
759 static int slot(oop reflect);
760 static void set_slot(oop reflect, int value);
761
762 static int modifiers(oop field);
763 static void set_modifiers(oop field, int value);
764
781 static bool has_type_annotations_field();
782 static oop type_annotations(oop field);
783 static void set_type_annotations(oop field, oop value);
784
785 // Debugging
786 friend class JavaClasses;
787 };
788
789 class java_lang_reflect_Parameter {
790 private:
791 // Note that to reduce dependencies on the JDK we compute these
792 // offsets at run-time.
793 static int name_offset;
794 static int modifiers_offset;
795 static int index_offset;
796 static int executable_offset;
797
798 static void compute_offsets();
799
800 public:
801 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
802
803 // Allocation
804 static Handle create(TRAPS);
805
806 // Accessors
807 static oop name(oop field);
808 static void set_name(oop field, oop value);
809
810 static int index(oop reflect);
811 static void set_index(oop reflect, int value);
812
813 static int modifiers(oop reflect);
814 static void set_modifiers(oop reflect, int value);
815
816 static oop executable(oop constructor);
817 static void set_executable(oop constructor, oop value);
818
819 friend class JavaClasses;
820 };
821
822 #define MODULE_INJECTED_FIELDS(macro) \
823 macro(java_lang_Module, module_entry, intptr_signature, false)
824
825 class java_lang_Module {
826 private:
827 static int loader_offset;
828 static int name_offset;
829 static int _module_entry_offset;
830 static void compute_offsets();
831
832 public:
833 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
834
835 // Allocation
836 static Handle create(Handle loader, Handle module_name, TRAPS);
837
838 // Testers
839 static bool is_instance(oop obj);
840
841 // Accessors
842 static oop loader(oop module);
843 static void set_loader(oop module, oop value);
844
845 static oop name(oop module);
846 static void set_name(oop module, oop value);
847
848 static ModuleEntry* module_entry(oop module);
849 static void set_module_entry(oop module, ModuleEntry* module_entry);
850
851 friend class JavaClasses;
852 };
853
854 // Interface to jdk.internal.reflect.ConstantPool objects
855 class reflect_ConstantPool {
856 private:
857 // Note that to reduce dependencies on the JDK we compute these
858 // offsets at run-time.
859 static int _oop_offset;
860
861 static void compute_offsets();
862
863 public:
864 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
865
866 // Allocation
867 static Handle create(TRAPS);
868
869 // Accessors
870 static void set_cp(oop reflect, ConstantPool* value);
871 static int oop_offset() {
872 return _oop_offset;
873 }
874
875 static ConstantPool* get_cp(oop reflect);
876
877 // Debugging
878 friend class JavaClasses;
879 };
880
881 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
882 class reflect_UnsafeStaticFieldAccessorImpl {
883 private:
884 static int _base_offset;
885 static void compute_offsets();
886
887 public:
888 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
889
890 static int base_offset() {
891 return _base_offset;
892 }
893
894 // Debugging
895 friend class JavaClasses;
896 };
897
898 // Interface to java.lang primitive type boxing objects:
899 // - java.lang.Boolean
900 // - java.lang.Character
901 // - java.lang.Float
902 // - java.lang.Double
903 // - java.lang.Byte
904 // - java.lang.Short
905 // - java.lang.Integer
906 // - java.lang.Long
907
908 // This could be separated out into 8 individual classes.
973 static bool is_referent_field(oop obj, ptrdiff_t offset);
974 static inline bool is_phantom(oop ref);
975 };
976
977
978 // Interface to java.lang.ref.SoftReference objects
979
980 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
981 public:
982 static int timestamp_offset;
983 static int static_clock_offset;
984
985 // Accessors
986 static jlong timestamp(oop ref);
987
988 // Accessors for statics
989 static jlong clock();
990 static void set_clock(jlong value);
991
992 static void compute_offsets();
993 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
994 };
995
996 // Interface to java.lang.invoke.MethodHandle objects
997
998 class MethodHandleEntry;
999
1000 class java_lang_invoke_MethodHandle: AllStatic {
1001 friend class JavaClasses;
1002
1003 private:
1004 static int _type_offset; // the MethodType of this MH
1005 static int _form_offset; // the LambdaForm of this MH
1006
1007 static void compute_offsets();
1008
1009 public:
1010 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1011
1012 // Accessors
1013 static oop type(oop mh);
1014 static void set_type(oop mh, oop mtype);
1015
1016 static oop form(oop mh);
1017 static void set_form(oop mh, oop lform);
1018
1019 // Testers
1020 static bool is_subclass(Klass* klass) {
1021 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
1022 }
1023 static bool is_instance(oop obj);
1024
1025 // Accessors for code generation:
1026 static int type_offset_in_bytes() { return _type_offset; }
1027 static int form_offset_in_bytes() { return _form_offset; }
1028 };
1029
1030 // Interface to java.lang.invoke.DirectMethodHandle objects
1031
1032 class java_lang_invoke_DirectMethodHandle: AllStatic {
1033 friend class JavaClasses;
1034
1035 private:
1036 static int _member_offset; // the MemberName of this DMH
1037
1038 static void compute_offsets();
1039
1040 public:
1041 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1042
1043 // Accessors
1044 static oop member(oop mh);
1045
1046 // Testers
1047 static bool is_subclass(Klass* klass) {
1048 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1049 }
1050 static bool is_instance(oop obj);
1051
1052 // Accessors for code generation:
1053 static int member_offset_in_bytes() { return _member_offset; }
1054 };
1055
1056 // Interface to java.lang.invoke.LambdaForm objects
1057 // (These are a private interface for managing adapter code generation.)
1058
1059 class java_lang_invoke_LambdaForm: AllStatic {
1060 friend class JavaClasses;
1061
1062 private:
1063 static int _vmentry_offset; // type is MemberName
1064
1065 static void compute_offsets();
1066
1067 public:
1068 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1069
1070 // Accessors
1071 static oop vmentry(oop lform);
1072 static void set_vmentry(oop lform, oop invoker);
1073
1074 // Testers
1075 static bool is_subclass(Klass* klass) {
1076 return SystemDictionary::LambdaForm_klass() != NULL &&
1077 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1078 }
1079 static bool is_instance(oop obj);
1080
1081 // Accessors for code generation:
1082 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1083 };
1084
1085
1086 // Interface to java.lang.invoke.MemberName objects
1087 // (These are a private interface for Java code to query the class hierarchy.)
1088
1089 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1090 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1091 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1092
1093 class java_lang_invoke_ResolvedMethodName : AllStatic {
1094 friend class JavaClasses;
1095
1096 static int _vmtarget_offset;
1097 static int _vmholder_offset;
1098
1099 static void compute_offsets();
1100 public:
1101 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1102
1103 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1104
1105 static Method* vmtarget(oop resolved_method);
1106 static void set_vmtarget(oop resolved_method, Method* method);
1107
1108 // find or create resolved member name
1109 static oop find_resolved_method(const methodHandle& m, TRAPS);
1110
1111 static bool is_instance(oop resolved_method);
1112 };
1113
1114
1115 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1116 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1117
1118
1119 class java_lang_invoke_MemberName: AllStatic {
1120 friend class JavaClasses;
1121
1122 private:
1123 // From java.lang.invoke.MemberName:
1124 // private Class<?> clazz; // class in which the method is defined
1125 // private String name; // may be null if not yet materialized
1126 // private Object type; // may be null if not yet materialized
1127 // private int flags; // modifier bits; see reflect.Modifier
1128 // private ResolvedMethodName method; // holds VM-specific target value
1129 // private intptr_t vmindex; // member index within class or interface
1130 static int _clazz_offset;
1131 static int _name_offset;
1132 static int _type_offset;
1133 static int _flags_offset;
1134 static int _method_offset;
1135 static int _vmindex_offset;
1136
1137 static void compute_offsets();
1138
1139 public:
1140 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1141 // Accessors
1142 static oop clazz(oop mname);
1143 static void set_clazz(oop mname, oop clazz);
1144
1145 static oop type(oop mname);
1146 static void set_type(oop mname, oop type);
1147
1148 static oop name(oop mname);
1149 static void set_name(oop mname, oop name);
1150
1151 static int flags(oop mname);
1152 static void set_flags(oop mname, int flags);
1153
1154 // Link through ResolvedMethodName field to get Method*
1155 static Method* vmtarget(oop mname);
1156 static void set_method(oop mname, oop method);
1157
1158 static intptr_t vmindex(oop mname);
1159 static void set_vmindex(oop mname, intptr_t index);
1160
1185 static int type_offset_in_bytes() { return _type_offset; }
1186 static int name_offset_in_bytes() { return _name_offset; }
1187 static int flags_offset_in_bytes() { return _flags_offset; }
1188 static int method_offset_in_bytes() { return _method_offset; }
1189 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1190 };
1191
1192
1193 // Interface to java.lang.invoke.MethodType objects
1194
1195 class java_lang_invoke_MethodType: AllStatic {
1196 friend class JavaClasses;
1197
1198 private:
1199 static int _rtype_offset;
1200 static int _ptypes_offset;
1201
1202 static void compute_offsets();
1203
1204 public:
1205 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1206 // Accessors
1207 static oop rtype(oop mt);
1208 static objArrayOop ptypes(oop mt);
1209
1210 static oop ptype(oop mt, int index);
1211 static int ptype_count(oop mt);
1212
1213 static int ptype_slot_count(oop mt); // extra counts for long/double
1214 static int rtype_slot_count(oop mt); // extra counts for long/double
1215
1216 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1217 static void print_signature(oop mt, outputStream* st);
1218
1219 static bool is_instance(oop obj);
1220
1221 static bool equals(oop mt1, oop mt2);
1222
1223 // Accessors for code generation:
1224 static int rtype_offset_in_bytes() { return _rtype_offset; }
1225 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1226 };
1227
1228
1229 // Interface to java.lang.invoke.CallSite objects
1230
1231 class java_lang_invoke_CallSite: AllStatic {
1232 friend class JavaClasses;
1233
1234 private:
1235 static int _target_offset;
1236 static int _context_offset;
1237
1238 static void compute_offsets();
1239
1240 public:
1241 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1242 // Accessors
1243 static oop target( oop site);
1244 static void set_target( oop site, oop target);
1245 static void set_target_volatile( oop site, oop target);
1246
1247 static oop context(oop site);
1248
1249 // Testers
1250 static bool is_subclass(Klass* klass) {
1251 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1252 }
1253 static bool is_instance(oop obj);
1254
1255 // Accessors for code generation:
1256 static int target_offset_in_bytes() { return _target_offset; }
1257 };
1258
1259 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1260
1261 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1262 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false)
1263
1264 class DependencyContext;
1265
1266 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1267 friend class JavaClasses;
1268
1269 private:
1270 static int _vmdependencies_offset;
1271
1272 static void compute_offsets();
1273
1274 public:
1275 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1276 // Accessors
1277 static DependencyContext vmdependencies(oop context);
1278
1279 // Testers
1280 static bool is_subclass(Klass* klass) {
1281 return klass->is_subclass_of(SystemDictionary::Context_klass());
1282 }
1283 static bool is_instance(oop obj);
1284 };
1285
1286 // Interface to java.security.AccessControlContext objects
1287
1288 class java_security_AccessControlContext: AllStatic {
1289 private:
1290 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1291 // so we compute the offsets at startup rather than hard-wiring them.
1292 static int _context_offset;
1293 static int _privilegedContext_offset;
1294 static int _isPrivileged_offset;
1295 static int _isAuthorized_offset;
1296
1297 static void compute_offsets();
1298 public:
1299 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1300 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1301
1302 static bool is_authorized(Handle context);
1303
1304 // Debugging/initialization
1305 friend class JavaClasses;
1306 };
1307
1308
1309 // Interface to java.lang.ClassLoader objects
1310
1311 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1312 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1313
1314 class java_lang_ClassLoader : AllStatic {
1315 private:
1316 static int _loader_data_offset;
1317 static bool offsets_computed;
1318 static int parent_offset;
1319 static int parallelCapable_offset;
1320 static int name_offset;
1321 static int nameAndId_offset;
1322 static int unnamedModule_offset;
1323
1324 public:
1325 static void compute_offsets();
1326 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1327
1328 static ClassLoaderData* loader_data(oop loader);
1329 static ClassLoaderData* cmpxchg_loader_data(ClassLoaderData* new_data, oop loader, ClassLoaderData* expected_data);
1330
1331 static oop parent(oop loader);
1332 static oop name(oop loader);
1333 static oop nameAndId(oop loader);
1334 static bool isAncestor(oop loader, oop cl);
1335
1336 // Support for parallelCapable field
1337 static bool parallelCapable(oop the_class_mirror);
1338
1339 static bool is_trusted_loader(oop loader);
1340
1341 // Return true if this is one of the class loaders associated with
1342 // the generated bytecodes for reflection.
1343 static bool is_reflection_class_loader(oop loader);
1344
1345 // Fix for 4474172
1346 static oop non_reflection_class_loader(oop loader);
1359 };
1360
1361
1362 // Interface to java.lang.System objects
1363
1364 class java_lang_System : AllStatic {
1365 private:
1366 static int static_in_offset;
1367 static int static_out_offset;
1368 static int static_err_offset;
1369 static int static_security_offset;
1370
1371 public:
1372 static int in_offset_in_bytes();
1373 static int out_offset_in_bytes();
1374 static int err_offset_in_bytes();
1375
1376 static bool has_security_manager();
1377
1378 static void compute_offsets();
1379 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1380
1381 // Debugging
1382 friend class JavaClasses;
1383 };
1384
1385
1386 // Interface to java.lang.StackTraceElement objects
1387
1388 class java_lang_StackTraceElement: AllStatic {
1389 private:
1390 static int declaringClassObject_offset;
1391 static int classLoaderName_offset;
1392 static int moduleName_offset;
1393 static int moduleVersion_offset;
1394 static int declaringClass_offset;
1395 static int methodName_offset;
1396 static int fileName_offset;
1397 static int lineNumber_offset;
1398
1399 // Setters
1400 static void set_classLoaderName(oop element, oop value);
1401 static void set_moduleName(oop element, oop value);
1402 static void set_moduleVersion(oop element, oop value);
1403 static void set_declaringClass(oop element, oop value);
1404 static void set_methodName(oop element, oop value);
1405 static void set_fileName(oop element, oop value);
1406 static void set_lineNumber(oop element, int value);
1407 static void set_declaringClassObject(oop element, oop value);
1408
1409 public:
1410 // Create an instance of StackTraceElement
1411 static oop create(const methodHandle& method, int bci, TRAPS);
1412
1413 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1414 int version, int bci, Symbol* name, TRAPS);
1415
1416 static void compute_offsets();
1417 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1418
1419 // Debugging
1420 friend class JavaClasses;
1421 };
1422
1423
1424 class Backtrace: AllStatic {
1425 public:
1426 // Helper backtrace functions to store bci|version together.
1427 static int merge_bci_and_version(int bci, int version);
1428 static int merge_mid_and_cpref(int mid, int cpref);
1429 static int bci_at(unsigned int merged);
1430 static int version_at(unsigned int merged);
1431 static int mid_at(unsigned int merged);
1432 static int cpref_at(unsigned int merged);
1433 static int get_line_number(const methodHandle& method, int bci);
1434 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1435
1436 // Debugging
1437 friend class JavaClasses;
1441
1442 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1443 macro(java_lang_StackFrameInfo, version, short_signature, false)
1444
1445 class java_lang_StackFrameInfo: AllStatic {
1446 private:
1447 static int _memberName_offset;
1448 static int _bci_offset;
1449 static int _version_offset;
1450
1451 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1452
1453 public:
1454 // Setters
1455 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1456 static void set_bci(oop info, int value);
1457
1458 static void set_version(oop info, short value);
1459
1460 static void compute_offsets();
1461 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1462
1463 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1464
1465 // Debugging
1466 friend class JavaClasses;
1467 };
1468
1469 class java_lang_LiveStackFrameInfo: AllStatic {
1470 private:
1471 static int _monitors_offset;
1472 static int _locals_offset;
1473 static int _operands_offset;
1474 static int _mode_offset;
1475
1476 public:
1477 static void set_monitors(oop info, oop value);
1478 static void set_locals(oop info, oop value);
1479 static void set_operands(oop info, oop value);
1480 static void set_mode(oop info, int value);
1481
1482 static void compute_offsets();
1483 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1484
1485 // Debugging
1486 friend class JavaClasses;
1487 };
1488
1489 // Interface to java.lang.AssertionStatusDirectives objects
1490
1491 class java_lang_AssertionStatusDirectives: AllStatic {
1492 private:
1493 static int classes_offset;
1494 static int classEnabled_offset;
1495 static int packages_offset;
1496 static int packageEnabled_offset;
1497 static int deflt_offset;
1498
1499 public:
1500 // Setters
1501 static void set_classes(oop obj, oop val);
1502 static void set_classEnabled(oop obj, oop val);
1503 static void set_packages(oop obj, oop val);
1504 static void set_packageEnabled(oop obj, oop val);
1505 static void set_deflt(oop obj, bool val);
1506
1507 static void compute_offsets();
1508 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1509
1510 // Debugging
1511 friend class JavaClasses;
1512 };
1513
1514
1515 class java_nio_Buffer: AllStatic {
1516 private:
1517 static int _limit_offset;
1518
1519 public:
1520 static int limit_offset();
1521 static void compute_offsets();
1522 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1523 };
1524
1525 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1526 private:
1527 static int _owner_offset;
1528 public:
1529 static void compute_offsets();
1530 static oop get_owner_threadObj(oop obj);
1531 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1532 };
1533
1534 class java_lang_Integer_IntegerCache: AllStatic {
1535 private:
1536 static int _archivedCache_offset;
1537 public:
1538 static int archivedCache_offset() { return _archivedCache_offset; }
1539 static void compute_offsets();
1540 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1541 };
1542
1543 class jdk_internal_module_ArchivedModuleGraph: AllStatic {
1544 private:
1545 static int _archivedSystemModules_offset;
1546 static int _archivedModuleFinder_offset;
1547 static int _archivedMainModule_offset;
1548 static int _archivedConfiguration_offset;
1549 public:
1550 static int archivedSystemModules_offset() { return _archivedSystemModules_offset; }
1551 static int archivedModuleFinder_offset() { return _archivedModuleFinder_offset; }
1552 static int archivedMainModule_offset() { return _archivedMainModule_offset; }
1553 static int archivedConfiguration_offset() { return _archivedConfiguration_offset; }
1554 static void compute_offsets();
1555 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1556 };
1557
1558 class java_lang_module_Configuration: AllStatic {
1559 private:
1560 static int _EMPTY_CONFIGURATION_offset;
1561 public:
1562 static int EMPTY_CONFIGURATION_offset() { return _EMPTY_CONFIGURATION_offset; }
1563 static void compute_offsets();
1564 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1565 };
1566
1567 class java_util_ImmutableCollections_ListN : AllStatic {
1568 private:
1569 static int _EMPTY_LIST_offset;
1570 public:
1571 static int EMPTY_LIST_offset() { return _EMPTY_LIST_offset; }
1572 static void compute_offsets();
1573 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1574 };
1575
1576 class java_util_ImmutableCollections_SetN : AllStatic {
1577 private:
1578 static int _EMPTY_SET_offset;
1579 public:
1580 static int EMPTY_SET_offset() { return _EMPTY_SET_offset; }
1581 static void compute_offsets();
1582 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1583 };
1584
1585 class java_util_ImmutableCollections_MapN : AllStatic {
1586 private:
1587 static int _EMPTY_MAP_offset;
1588 public:
1589 static int EMPTY_MAP_offset() { return _EMPTY_MAP_offset; }
1590 static void compute_offsets();
1591 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1592 };
1593
1594 // Use to declare fields that need to be injected into Java classes
1595 // for the JVM to use. The name_index and signature_index are
1596 // declared in vmSymbols. The may_be_java flag is used to declare
1597 // fields that might already exist in Java but should be injected if
1598 // they don't. Otherwise the field is unconditionally injected and
1599 // the JVM uses the injected one. This is to ensure that name
1600 // collisions don't occur. In general may_be_java should be false
1601 // unless there's a good reason.
1602
1603 class InjectedField {
1604 public:
1605 const SystemDictionary::WKID klass_id;
1606 const vmSymbols::SID name_index;
1607 const vmSymbols::SID signature_index;
1608 const bool may_be_java;
1609
1610
1611 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1634
1635 // Interface to hard-coded offset checking
1636
1637 class JavaClasses : AllStatic {
1638 private:
1639
1640 static InjectedField _injected_fields[];
1641
1642 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1643 public:
1644 enum InjectedFieldID {
1645 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1646 MAX_enum
1647 };
1648
1649 static int compute_injected_offset(InjectedFieldID id);
1650
1651 static void compute_hard_coded_offsets();
1652 static void compute_offsets();
1653 static void check_offsets() PRODUCT_RETURN;
1654 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1655 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1656 };
1657
1658 #undef DECLARE_INJECTED_FIELD_ENUM
1659
1660 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP
|