235 friend class VMStructs;
236 friend class JVMCIVMStructs;
237 friend class HeapShared;
238
239 private:
240
241 // The fake offsets are added by the class loader when java.lang.Class is loaded
242
243 static int _klass_offset;
244 static int _array_klass_offset;
245
246 static int _oop_size_offset;
247 static int _static_oop_field_count_offset;
248
249 static int _protection_domain_offset;
250 static int _init_lock_offset;
251 static int _signers_offset;
252 static int _class_loader_offset;
253 static int _module_offset;
254 static int _component_mirror_offset;
255 static int _name_offset;
256 static int _source_file_offset;
257 static int _classData_offset;
258 static int _classRedefinedCount_offset;
259 static int _reflectionData_offset;
260 static int _modifiers_offset;
261 static int _is_primitive_offset;
262 static int _raw_access_flags_offset;
263
264 static bool _offsets_computed;
265
266 static GrowableArray<Klass*>* _fixup_mirror_list;
267 static GrowableArray<Klass*>* _fixup_module_field_list;
268
269 static void set_init_lock(oop java_class, oop init_lock);
270 static void set_protection_domain(oop java_class, oop protection_domain);
271 static void set_class_loader(oop java_class, oop class_loader);
272 static void set_component_mirror(oop java_class, oop comp_mirror);
273 static void initialize_mirror_fields(InstanceKlass* ik, Handle mirror, Handle protection_domain,
274 Handle classData, TRAPS);
275 static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
276
277 static void set_modifiers(oop java_class, u2 value);
278 static void set_raw_access_flags(oop java_class, u2 value);
279 static void set_is_primitive(oop java_class);
280 static void release_set_array_klass(oop java_class, Klass* klass);
281
282 public:
283 static void allocate_fixup_lists();
284 static void compute_offsets();
285
286 // Instance creation
287 static void allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
288 Handle& mirror, Handle& comp_mirror, TRAPS); // returns mirror and comp_mirror
289 static void create_mirror(Klass* k, Handle class_loader, Handle module,
290 Handle protection_domain, Handle classData, TRAPS);
291 static void fixup_mirror(Klass* k, TRAPS);
292 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
293
294 // Archiving
295 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
303 // Conversion -- java_class must not be null. The return value is null only if java_class is a primitive type.
304 static Klass* as_Klass(oop java_class);
305 static InstanceKlass* as_InstanceKlass(oop java_class);
306
307 static void set_klass(oop java_class, Klass* klass);
308 static BasicType as_BasicType(oop java_class, Klass** reference_klass = nullptr);
309 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
310 static void print_signature(oop java_class, outputStream *st);
311 static const char* as_external_name(oop java_class);
312 // Testing
313 static bool is_instance(oop obj);
314
315 static bool is_primitive(oop java_class);
316 static BasicType primitive_type(oop java_class);
317 static oop primitive_mirror(BasicType t);
318 static Klass* array_klass_acquire(oop java_class);
319
320 // compiler support for class operations
321 static int klass_offset() { CHECK_INIT(_klass_offset); }
322 static int array_klass_offset() { CHECK_INIT(_array_klass_offset); }
323 // Support for classRedefinedCount field
324 static int classRedefinedCount(oop the_class_mirror);
325 static void set_classRedefinedCount(oop the_class_mirror, int value);
326
327 // Support for embedded per-class oops
328 static oop protection_domain(oop java_class);
329 static oop init_lock(oop java_class);
330 static void clear_init_lock(oop java_class) {
331 set_init_lock(java_class, nullptr);
332 }
333 static oop component_mirror(oop java_class);
334 static int component_mirror_offset() { return _component_mirror_offset; }
335 static objArrayOop signers(oop java_class);
336 static oop class_data(oop java_class);
337 static void set_class_data(oop java_class, oop classData);
338 static int reflection_data_offset() { return _reflectionData_offset; }
339
340 static oop class_loader(oop java_class);
341 static void set_module(oop java_class, oop module);
342 static oop module(oop java_class);
644 trace_hidden_offset = 6,
645 trace_size = 7,
646 trace_chunk_size = 32
647 };
648
649 static int _backtrace_offset;
650 static int _detailMessage_offset;
651 static int _stackTrace_offset;
652 static int _depth_offset;
653 static int _cause_offset;
654 static int _static_unassigned_stacktrace_offset;
655
656 // StackTrace (programmatic access, new since 1.4)
657 static void clear_stacktrace(oop throwable);
658 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
659 static void set_stacktrace(oop throwable, oop st_element_array);
660 static oop unassigned_stacktrace();
661
662 public:
663 // Backtrace
664 static oop backtrace(oop throwable);
665 static void set_backtrace(oop throwable, oop value);
666 static int depth(oop throwable);
667 static void set_depth(oop throwable, int value);
668 // Message
669 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
670 static oop message(oop throwable);
671 static const char* message_as_utf8(oop throwable);
672 static void set_message(oop throwable, oop value);
673
674 static oop cause(oop throwable);
675
676 static void print_stack_element(outputStream *st, Method* method, int bci);
677
678 static void compute_offsets();
679 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
680
681 // Allocate space for backtrace (created but stack trace not filled in)
682 static void allocate_backtrace(Handle throwable, TRAPS);
683 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
684 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
685 // Fill in current stack trace, can cause GC
686 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
687 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
688
689 // Programmatic access to stack trace
690 static void get_stack_trace_elements(int depth, Handle backtrace, objArrayHandle stack_trace, TRAPS);
691
692 // For recreating class initialization error exceptions.
693 static Handle create_initialization_error(JavaThread* current, Handle throwable);
694
695 // Printing
696 static void print(oop throwable, outputStream* st);
697 static void print_stack_trace(Handle throwable, outputStream* st);
698 static void java_printStackTrace(Handle throwable, TRAPS);
699 // Debugging
700 friend class JavaClasses;
701 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
702 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
703 };
704
705
706 // Interface to java.lang.reflect.AccessibleObject objects
707
708 class java_lang_reflect_AccessibleObject: AllStatic {
709 private:
710 // Note that to reduce dependencies on the JDK we compute these
814 static void set_signature(oop constructor, oop value);
815 static void set_annotations(oop constructor, oop value);
816 static void set_parameter_annotations(oop method, oop value);
817
818 // Debugging
819 friend class JavaClasses;
820 };
821
822
823 // Interface to java.lang.reflect.Field objects
824
825 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
826 private:
827 // Note that to reduce dependencies on the JDK we compute these
828 // offsets at run-time.
829 static int _clazz_offset;
830 static int _name_offset;
831 static int _type_offset;
832 static int _slot_offset;
833 static int _modifiers_offset;
834 static int _trusted_final_offset;
835 static int _signature_offset;
836 static int _annotations_offset;
837
838 static void compute_offsets();
839
840 public:
841 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
842
843 // Allocation
844 static Handle create(TRAPS);
845
846 // Accessors
847 static oop clazz(oop reflect);
848 static void set_clazz(oop reflect, oop value);
849
850 static oop name(oop field);
851 static void set_name(oop field, oop value);
852
853 static oop type(oop field);
854 static void set_type(oop field, oop value);
855
856 static int slot(oop reflect);
857 static void set_slot(oop reflect, int value);
858
859 static int modifiers(oop field);
860 static void set_modifiers(oop field, int value);
861
862 static void set_trusted_final(oop field);
863
864 static void set_signature(oop constructor, oop value);
865 static void set_annotations(oop constructor, oop value);
866
867 // Debugging
868 friend class JavaClasses;
869 };
870
871 class java_lang_reflect_Parameter {
872 private:
873 // Note that to reduce dependencies on the JDK we compute these
874 // offsets at run-time.
875 static int _name_offset;
876 static int _modifiers_offset;
877 static int _index_offset;
878 static int _executable_offset;
879
880 static void compute_offsets();
881
882 public:
964
965 // Debugging
966 friend class JavaClasses;
967 };
968
969
970 // Interface to java.lang primitive type boxing objects:
971 // - java.lang.Boolean
972 // - java.lang.Character
973 // - java.lang.Float
974 // - java.lang.Double
975 // - java.lang.Byte
976 // - java.lang.Short
977 // - java.lang.Integer
978 // - java.lang.Long
979
980 // This could be separated out into 8 individual classes.
981
982 class java_lang_boxing_object: AllStatic {
983 private:
984 static int _value_offset;
985 static int _long_value_offset;
986
987 static void compute_offsets();
988 static oop initialize_and_allocate(BasicType type, TRAPS);
989 public:
990 // Allocation. Returns a boxed value, or null for invalid type.
991 static oop create(BasicType type, jvalue* value, TRAPS);
992 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
993 static BasicType get_value(oop box, jvalue* value);
994 static BasicType set_value(oop box, jvalue* value);
995 static BasicType basic_type(oop box);
996 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
997 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
998 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
999 static void print(BasicType type, jvalue* value, outputStream* st);
1000
1001 static int value_offset(BasicType type) {
1002 return is_double_word_type(type) ? _long_value_offset : _value_offset;
1003 }
1004
1005 static void serialize_offsets(SerializeClosure* f);
1006
1007 // Debugging
1008 friend class JavaClasses;
1009 };
1010
1011
1012
1013 // Interface to java.lang.ref.Reference objects
1014
1015 class java_lang_ref_Reference: AllStatic {
1016 static int _referent_offset;
1017 static int _queue_offset;
1018 static int _next_offset;
1019 static int _discovered_offset;
1020
1021 static bool _offsets_initialized;
1022
1182 };
1183
1184 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic {
1185 friend class JavaClasses;
1186
1187 private:
1188 static int _inputStorage_offset;
1189 static int _outputStorage_offset;
1190 static int _volatileStorage_offset;
1191 static int _stackAlignment_offset;
1192 static int _shadowSpace_offset;
1193 static int _scratch1_offset;
1194 static int _scratch2_offset;
1195
1196 static void compute_offsets();
1197
1198 public:
1199 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1200
1201 // Accessors
1202 static objArrayOop inputStorage(oop entry);
1203 static objArrayOop outputStorage(oop entry);
1204 static objArrayOop volatileStorage(oop entry);
1205 static jint stackAlignment(oop entry);
1206 static jint shadowSpace(oop entry);
1207 static oop scratch1(oop entry);
1208 static oop scratch2(oop entry);
1209 };
1210
1211 class jdk_internal_foreign_abi_VMStorage: AllStatic {
1212 friend class JavaClasses;
1213
1214 private:
1215 static int _type_offset;
1216 static int _indexOrOffset_offset;
1217 static int _segmentMaskOrSize_offset;
1218 static int _debugName_offset;
1219
1220 static void compute_offsets();
1221
1222 public:
1223 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1224
1232 static bool is_subclass(Klass* klass) {
1233 return vmClasses::VMStorage_klass() != nullptr &&
1234 klass->is_subclass_of(vmClasses::VMStorage_klass());
1235 }
1236 static bool is_instance(oop obj);
1237 };
1238
1239 class jdk_internal_foreign_abi_CallConv: AllStatic {
1240 friend class JavaClasses;
1241
1242 private:
1243 static int _argRegs_offset;
1244 static int _retRegs_offset;
1245
1246 static void compute_offsets();
1247
1248 public:
1249 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1250
1251 // Accessors
1252 static objArrayOop argRegs(oop entry);
1253 static objArrayOop retRegs(oop entry);
1254
1255 // Testers
1256 static bool is_subclass(Klass* klass) {
1257 return vmClasses::CallConv_klass() != nullptr &&
1258 klass->is_subclass_of(vmClasses::CallConv_klass());
1259 }
1260 static bool is_instance(oop obj);
1261 };
1262
1263 // Interface to java.lang.invoke.MemberName objects
1264 // (These are a private interface for Java code to query the class hierarchy.)
1265
1266 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1267 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1268
1269 class java_lang_invoke_ResolvedMethodName : AllStatic {
1270 friend class JavaClasses;
1271
1272 static int _vmtarget_offset;
1273 static int _vmholder_offset;
1330 static void set_flags(oop mname, int flags);
1331
1332 // Link through ResolvedMethodName field to get Method*
1333 static Method* vmtarget(oop mname);
1334 static void set_method(oop mname, oop method);
1335
1336 static intptr_t vmindex(oop mname);
1337 static void set_vmindex(oop mname, intptr_t index);
1338
1339 // Testers
1340 static bool is_subclass(Klass* klass) {
1341 return klass->is_subclass_of(vmClasses::MemberName_klass());
1342 }
1343 static bool is_instance(oop obj);
1344
1345 static bool is_method(oop obj);
1346
1347 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1348 enum {
1349 MN_IS_METHOD = 0x00010000, // method (not constructor)
1350 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1351 MN_IS_FIELD = 0x00040000, // field
1352 MN_IS_TYPE = 0x00080000, // nested type
1353 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1354 MN_TRUSTED_FINAL = 0x00200000, // trusted final field
1355 MN_HIDDEN_MEMBER = 0x00400000, // @Hidden annotation detected
1356 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1357 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1358 MN_NESTMATE_CLASS = 0x00000001,
1359 MN_HIDDEN_CLASS = 0x00000002,
1360 MN_STRONG_LOADER_LINK = 0x00000004,
1361 MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1362 // Lookup modes
1363 MN_MODULE_MODE = 0x00000010,
1364 MN_UNCONDITIONAL_MODE = 0x00000020,
1365 MN_TRUSTED_MODE = -1
1366 };
1367
1368 // Accessors for code generation:
1369 static int clazz_offset() { CHECK_INIT(_clazz_offset); }
1370 static int type_offset() { CHECK_INIT(_type_offset); }
1371 static int flags_offset() { CHECK_INIT(_flags_offset); }
1372 static int method_offset() { CHECK_INIT(_method_offset); }
1373 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1374 };
1375
1376
1377 // Interface to java.lang.invoke.MethodType objects
1378
1379 class java_lang_invoke_MethodType: AllStatic {
1380 friend class JavaClasses;
1381
1382 private:
1383 static int _rtype_offset;
1384 static int _ptypes_offset;
1385
1386 static void compute_offsets();
1387
1388 public:
1389 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1390 // Accessors
1391 static oop rtype(oop mt);
1392 static objArrayOop ptypes(oop mt);
1393
1394 static oop ptype(oop mt, int index);
1395 static int ptype_count(oop mt);
1396
1397 static int ptype_slot_count(oop mt); // extra counts for long/double
1398 static int rtype_slot_count(oop mt); // extra counts for long/double
1399
1400 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1401 static void print_signature(oop mt, outputStream* st);
1402
1403 static bool is_instance(oop obj);
1404
1405 static bool equals(oop mt1, oop mt2);
1406
1407 // Accessors for code generation:
1408 static int rtype_offset() { CHECK_INIT(_rtype_offset); }
1409 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); }
1410 };
1411
1412
1797
1798 class java_lang_Boolean : AllStatic {
1799 private:
1800 static int _static_TRUE_offset;
1801 static int _static_FALSE_offset;
1802 public:
1803 static Symbol* symbol();
1804 static void compute_offsets(InstanceKlass* k);
1805 static oop get_TRUE(InstanceKlass *k);
1806 static oop get_FALSE(InstanceKlass *k);
1807 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1808 static jboolean value(oop obj);
1809 };
1810
1811 class java_lang_Integer_IntegerCache : AllStatic {
1812 private:
1813 static int _static_cache_offset;
1814 public:
1815 static Symbol* symbol();
1816 static void compute_offsets(InstanceKlass* k);
1817 static objArrayOop cache(InstanceKlass *k);
1818 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1819 };
1820
1821 class java_lang_Long_LongCache : AllStatic {
1822 private:
1823 static int _static_cache_offset;
1824 public:
1825 static Symbol* symbol();
1826 static void compute_offsets(InstanceKlass* k);
1827 static objArrayOop cache(InstanceKlass *k);
1828 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1829 };
1830
1831 class java_lang_Character_CharacterCache : AllStatic {
1832 private:
1833 static int _static_cache_offset;
1834 public:
1835 static Symbol* symbol();
1836 static void compute_offsets(InstanceKlass* k);
1837 static objArrayOop cache(InstanceKlass *k);
1838 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1839 };
1840
1841 class java_lang_Short_ShortCache : AllStatic {
1842 private:
1843 static int _static_cache_offset;
1844 public:
1845 static Symbol* symbol();
1846 static void compute_offsets(InstanceKlass* k);
1847 static objArrayOop cache(InstanceKlass *k);
1848 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1849 };
1850
1851 class java_lang_Byte_ByteCache : AllStatic {
1852 private:
1853 static int _static_cache_offset;
1854 public:
1855 static Symbol* symbol();
1856 static void compute_offsets(InstanceKlass* k);
1857 static objArrayOop cache(InstanceKlass *k);
1858 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1859 };
1860
1861
1862 // Interface to java.lang.InternalError objects
1863
1864 #define INTERNALERROR_INJECTED_FIELDS(macro) \
1865 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1866
1867 class java_lang_InternalError : AllStatic {
1868 private:
1869 static int _during_unsafe_access_offset;
1870 public:
1871 static jboolean during_unsafe_access(oop internal_error);
1872 static void set_during_unsafe_access(oop internal_error);
1873 static void compute_offsets();
1874 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1875 };
1876
1877 // Use to declare fields that need to be injected into Java classes
1878 // for the JVM to use. The name_index and signature_index are
1879 // declared in vmSymbols. The may_be_java flag is used to declare
1880 // fields that might already exist in Java but should be injected if
1881 // they don't. Otherwise the field is unconditionally injected and
|
235 friend class VMStructs;
236 friend class JVMCIVMStructs;
237 friend class HeapShared;
238
239 private:
240
241 // The fake offsets are added by the class loader when java.lang.Class is loaded
242
243 static int _klass_offset;
244 static int _array_klass_offset;
245
246 static int _oop_size_offset;
247 static int _static_oop_field_count_offset;
248
249 static int _protection_domain_offset;
250 static int _init_lock_offset;
251 static int _signers_offset;
252 static int _class_loader_offset;
253 static int _module_offset;
254 static int _component_mirror_offset;
255
256 static int _name_offset;
257 static int _source_file_offset;
258 static int _classData_offset;
259 static int _classRedefinedCount_offset;
260 static int _reflectionData_offset;
261 static int _modifiers_offset;
262 static int _is_primitive_offset;
263 static int _is_identity_offset;
264 static int _raw_access_flags_offset;
265
266 static bool _offsets_computed;
267
268 static GrowableArray<Klass*>* _fixup_mirror_list;
269 static GrowableArray<Klass*>* _fixup_module_field_list;
270
271 static void set_init_lock(oop java_class, oop init_lock);
272 static void set_protection_domain(oop java_class, oop protection_domain);
273 static void set_class_loader(oop java_class, oop class_loader);
274 static void set_component_mirror(oop java_class, oop comp_mirror);
275 static void initialize_mirror_fields(InstanceKlass* ik, Handle mirror, Handle protection_domain,
276 Handle classData, TRAPS);
277 static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
278 static void set_is_identity(oop java_class, bool value);
279
280 static void set_modifiers(oop java_class, u2 value);
281 static void set_raw_access_flags(oop java_class, u2 value);
282 static void set_is_primitive(oop java_class);
283 static void release_set_array_klass(oop java_class, Klass* klass);
284
285 public:
286 static void allocate_fixup_lists();
287 static void compute_offsets();
288
289 // Instance creation
290 static void allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
291 Handle& mirror, Handle& comp_mirror, TRAPS); // returns mirror and comp_mirror
292 static void create_mirror(Klass* k, Handle class_loader, Handle module,
293 Handle protection_domain, Handle classData, TRAPS);
294 static void fixup_mirror(Klass* k, TRAPS);
295 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
296
297 // Archiving
298 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
306 // Conversion -- java_class must not be null. The return value is null only if java_class is a primitive type.
307 static Klass* as_Klass(oop java_class);
308 static InstanceKlass* as_InstanceKlass(oop java_class);
309
310 static void set_klass(oop java_class, Klass* klass);
311 static BasicType as_BasicType(oop java_class, Klass** reference_klass = nullptr);
312 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
313 static void print_signature(oop java_class, outputStream *st);
314 static const char* as_external_name(oop java_class);
315 // Testing
316 static bool is_instance(oop obj);
317
318 static bool is_primitive(oop java_class);
319 static BasicType primitive_type(oop java_class);
320 static oop primitive_mirror(BasicType t);
321 static Klass* array_klass_acquire(oop java_class);
322
323 // compiler support for class operations
324 static int klass_offset() { CHECK_INIT(_klass_offset); }
325 static int array_klass_offset() { CHECK_INIT(_array_klass_offset); }
326
327 // Support for classRedefinedCount field
328 static int classRedefinedCount(oop the_class_mirror);
329 static void set_classRedefinedCount(oop the_class_mirror, int value);
330
331 // Support for embedded per-class oops
332 static oop protection_domain(oop java_class);
333 static oop init_lock(oop java_class);
334 static void clear_init_lock(oop java_class) {
335 set_init_lock(java_class, nullptr);
336 }
337 static oop component_mirror(oop java_class);
338 static int component_mirror_offset() { return _component_mirror_offset; }
339 static objArrayOop signers(oop java_class);
340 static oop class_data(oop java_class);
341 static void set_class_data(oop java_class, oop classData);
342 static int reflection_data_offset() { return _reflectionData_offset; }
343
344 static oop class_loader(oop java_class);
345 static void set_module(oop java_class, oop module);
346 static oop module(oop java_class);
648 trace_hidden_offset = 6,
649 trace_size = 7,
650 trace_chunk_size = 32
651 };
652
653 static int _backtrace_offset;
654 static int _detailMessage_offset;
655 static int _stackTrace_offset;
656 static int _depth_offset;
657 static int _cause_offset;
658 static int _static_unassigned_stacktrace_offset;
659
660 // StackTrace (programmatic access, new since 1.4)
661 static void clear_stacktrace(oop throwable);
662 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
663 static void set_stacktrace(oop throwable, oop st_element_array);
664 static oop unassigned_stacktrace();
665
666 public:
667 // Backtrace
668 static refArrayOop backtrace(oop throwable);
669 static void set_backtrace(oop throwable, refArrayOop value);
670 static int depth(oop throwable);
671 static void set_depth(oop throwable, int value);
672 // Message
673 static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
674 static oop message(oop throwable);
675 static const char* message_as_utf8(oop throwable);
676 static void set_message(oop throwable, oop value);
677
678 static oop cause(oop throwable);
679
680 static void print_stack_element(outputStream *st, Method* method, int bci);
681
682 static void compute_offsets();
683 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
684
685 // Allocate space for backtrace (created but stack trace not filled in)
686 static void allocate_backtrace(Handle throwable, TRAPS);
687 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
688 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
689 // Fill in current stack trace, can cause GC
690 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
691 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
692
693 // Programmatic access to stack trace
694 static void get_stack_trace_elements(int depth, Handle backtrace, refArrayHandle stack_trace, TRAPS);
695
696 // For recreating class initialization error exceptions.
697 static Handle create_initialization_error(JavaThread* current, Handle throwable);
698
699 // Printing
700 static void print(oop throwable, outputStream* st);
701 static void print_stack_trace(Handle throwable, outputStream* st);
702 static void java_printStackTrace(Handle throwable, TRAPS);
703 // Debugging
704 friend class JavaClasses;
705 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
706 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
707 };
708
709
710 // Interface to java.lang.reflect.AccessibleObject objects
711
712 class java_lang_reflect_AccessibleObject: AllStatic {
713 private:
714 // Note that to reduce dependencies on the JDK we compute these
818 static void set_signature(oop constructor, oop value);
819 static void set_annotations(oop constructor, oop value);
820 static void set_parameter_annotations(oop method, oop value);
821
822 // Debugging
823 friend class JavaClasses;
824 };
825
826
827 // Interface to java.lang.reflect.Field objects
828
829 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
830 private:
831 // Note that to reduce dependencies on the JDK we compute these
832 // offsets at run-time.
833 static int _clazz_offset;
834 static int _name_offset;
835 static int _type_offset;
836 static int _slot_offset;
837 static int _modifiers_offset;
838 static int _flags_offset;
839 static int _signature_offset;
840 static int _annotations_offset;
841
842 static void compute_offsets();
843
844 public:
845 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
846
847 // Allocation
848 static Handle create(TRAPS);
849
850 // Accessors
851 static oop clazz(oop reflect);
852 static void set_clazz(oop reflect, oop value);
853
854 static oop name(oop field);
855 static void set_name(oop field, oop value);
856
857 static oop type(oop field);
858 static void set_type(oop field, oop value);
859
860 static int slot(oop reflect);
861 static void set_slot(oop reflect, int value);
862
863 static int modifiers(oop field);
864 static void set_modifiers(oop field, int value);
865
866 static void set_flags(oop field, int value);
867
868 static void set_signature(oop constructor, oop value);
869 static void set_annotations(oop constructor, oop value);
870
871 // Debugging
872 friend class JavaClasses;
873 };
874
875 class java_lang_reflect_Parameter {
876 private:
877 // Note that to reduce dependencies on the JDK we compute these
878 // offsets at run-time.
879 static int _name_offset;
880 static int _modifiers_offset;
881 static int _index_offset;
882 static int _executable_offset;
883
884 static void compute_offsets();
885
886 public:
968
969 // Debugging
970 friend class JavaClasses;
971 };
972
973
974 // Interface to java.lang primitive type boxing objects:
975 // - java.lang.Boolean
976 // - java.lang.Character
977 // - java.lang.Float
978 // - java.lang.Double
979 // - java.lang.Byte
980 // - java.lang.Short
981 // - java.lang.Integer
982 // - java.lang.Long
983
984 // This could be separated out into 8 individual classes.
985
986 class java_lang_boxing_object: AllStatic {
987 private:
988 static int* _offsets;
989
990 static void compute_offsets();
991 static oop initialize_and_allocate(BasicType type, TRAPS);
992 public:
993 // Allocation. Returns a boxed value, or null for invalid type.
994 static oop create(BasicType type, jvalue* value, TRAPS);
995 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
996 static BasicType get_value(oop box, jvalue* value);
997 static BasicType set_value(oop box, jvalue* value);
998 static BasicType basic_type(oop box);
999 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
1000 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
1001 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
1002 static void print(BasicType type, jvalue* value, outputStream* st);
1003
1004 static int value_offset(BasicType type) {
1005 assert(type >= T_BOOLEAN && type <= T_LONG, "BasicType out of range");
1006 assert(_offsets != nullptr, "Uninitialized offsets");
1007 return _offsets[type - T_BOOLEAN];
1008 }
1009
1010 static void serialize_offsets(SerializeClosure* f);
1011
1012 // Debugging
1013 friend class JavaClasses;
1014 };
1015
1016
1017
1018 // Interface to java.lang.ref.Reference objects
1019
1020 class java_lang_ref_Reference: AllStatic {
1021 static int _referent_offset;
1022 static int _queue_offset;
1023 static int _next_offset;
1024 static int _discovered_offset;
1025
1026 static bool _offsets_initialized;
1027
1187 };
1188
1189 class jdk_internal_foreign_abi_ABIDescriptor: AllStatic {
1190 friend class JavaClasses;
1191
1192 private:
1193 static int _inputStorage_offset;
1194 static int _outputStorage_offset;
1195 static int _volatileStorage_offset;
1196 static int _stackAlignment_offset;
1197 static int _shadowSpace_offset;
1198 static int _scratch1_offset;
1199 static int _scratch2_offset;
1200
1201 static void compute_offsets();
1202
1203 public:
1204 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1205
1206 // Accessors
1207 static refArrayOop inputStorage(oop entry);
1208 static refArrayOop outputStorage(oop entry);
1209 static refArrayOop volatileStorage(oop entry);
1210 static jint stackAlignment(oop entry);
1211 static jint shadowSpace(oop entry);
1212 static oop scratch1(oop entry);
1213 static oop scratch2(oop entry);
1214 };
1215
1216 class jdk_internal_foreign_abi_VMStorage: AllStatic {
1217 friend class JavaClasses;
1218
1219 private:
1220 static int _type_offset;
1221 static int _indexOrOffset_offset;
1222 static int _segmentMaskOrSize_offset;
1223 static int _debugName_offset;
1224
1225 static void compute_offsets();
1226
1227 public:
1228 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1229
1237 static bool is_subclass(Klass* klass) {
1238 return vmClasses::VMStorage_klass() != nullptr &&
1239 klass->is_subclass_of(vmClasses::VMStorage_klass());
1240 }
1241 static bool is_instance(oop obj);
1242 };
1243
1244 class jdk_internal_foreign_abi_CallConv: AllStatic {
1245 friend class JavaClasses;
1246
1247 private:
1248 static int _argRegs_offset;
1249 static int _retRegs_offset;
1250
1251 static void compute_offsets();
1252
1253 public:
1254 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1255
1256 // Accessors
1257 static refArrayOop argRegs(oop entry);
1258 static refArrayOop retRegs(oop entry);
1259
1260 // Testers
1261 static bool is_subclass(Klass* klass) {
1262 return vmClasses::CallConv_klass() != nullptr &&
1263 klass->is_subclass_of(vmClasses::CallConv_klass());
1264 }
1265 static bool is_instance(oop obj);
1266 };
1267
1268 // Interface to java.lang.invoke.MemberName objects
1269 // (These are a private interface for Java code to query the class hierarchy.)
1270
1271 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1272 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1273
1274 class java_lang_invoke_ResolvedMethodName : AllStatic {
1275 friend class JavaClasses;
1276
1277 static int _vmtarget_offset;
1278 static int _vmholder_offset;
1335 static void set_flags(oop mname, int flags);
1336
1337 // Link through ResolvedMethodName field to get Method*
1338 static Method* vmtarget(oop mname);
1339 static void set_method(oop mname, oop method);
1340
1341 static intptr_t vmindex(oop mname);
1342 static void set_vmindex(oop mname, intptr_t index);
1343
1344 // Testers
1345 static bool is_subclass(Klass* klass) {
1346 return klass->is_subclass_of(vmClasses::MemberName_klass());
1347 }
1348 static bool is_instance(oop obj);
1349
1350 static bool is_method(oop obj);
1351
1352 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1353 enum {
1354 MN_IS_METHOD = 0x00010000, // method (not constructor)
1355 MN_IS_OBJECT_CONSTRUCTOR = 0x00020000, // constructor
1356 MN_IS_FIELD = 0x00040000, // field
1357 MN_IS_TYPE = 0x00080000, // nested type
1358 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1359 MN_TRUSTED_FINAL = 0x00200000, // trusted final field
1360 MN_HIDDEN_MEMBER = 0x00400000, // @Hidden annotation detected
1361 MN_NULL_RESTRICTED_FIELD = 0x00800000, // null-restricted field
1362 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1363 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, // 4 bits
1364 MN_LAYOUT_SHIFT = 28, // field layout
1365 MN_LAYOUT_MASK = 0x70000000 >> MN_LAYOUT_SHIFT, // 3 bits
1366 MN_NESTMATE_CLASS = 0x00000001,
1367 MN_HIDDEN_CLASS = 0x00000002,
1368 MN_STRONG_LOADER_LINK = 0x00000004,
1369 MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1370 // Lookup modes
1371 MN_MODULE_MODE = 0x00000010,
1372 MN_UNCONDITIONAL_MODE = 0x00000020,
1373 MN_TRUSTED_MODE = -1
1374 };
1375
1376 // Accessors for code generation:
1377 static int clazz_offset() { CHECK_INIT(_clazz_offset); }
1378 static int type_offset() { CHECK_INIT(_type_offset); }
1379 static int flags_offset() { CHECK_INIT(_flags_offset); }
1380 static int method_offset() { CHECK_INIT(_method_offset); }
1381 static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1382 };
1383
1384
1385 // Interface to java.lang.invoke.MethodType objects
1386
1387 class java_lang_invoke_MethodType: AllStatic {
1388 friend class JavaClasses;
1389
1390 private:
1391 static int _rtype_offset;
1392 static int _ptypes_offset;
1393
1394 static void compute_offsets();
1395
1396 public:
1397 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1398 // Accessors
1399 static oop rtype(oop mt);
1400 static refArrayOop ptypes(oop mt);
1401
1402 static oop ptype(oop mt, int index);
1403 static int ptype_count(oop mt);
1404
1405 static int ptype_slot_count(oop mt); // extra counts for long/double
1406 static int rtype_slot_count(oop mt); // extra counts for long/double
1407
1408 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1409 static void print_signature(oop mt, outputStream* st);
1410
1411 static bool is_instance(oop obj);
1412
1413 static bool equals(oop mt1, oop mt2);
1414
1415 // Accessors for code generation:
1416 static int rtype_offset() { CHECK_INIT(_rtype_offset); }
1417 static int ptypes_offset() { CHECK_INIT(_ptypes_offset); }
1418 };
1419
1420
1805
1806 class java_lang_Boolean : AllStatic {
1807 private:
1808 static int _static_TRUE_offset;
1809 static int _static_FALSE_offset;
1810 public:
1811 static Symbol* symbol();
1812 static void compute_offsets(InstanceKlass* k);
1813 static oop get_TRUE(InstanceKlass *k);
1814 static oop get_FALSE(InstanceKlass *k);
1815 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1816 static jboolean value(oop obj);
1817 };
1818
1819 class java_lang_Integer_IntegerCache : AllStatic {
1820 private:
1821 static int _static_cache_offset;
1822 public:
1823 static Symbol* symbol();
1824 static void compute_offsets(InstanceKlass* k);
1825 static refArrayOop cache(InstanceKlass *k);
1826 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1827 };
1828
1829 class java_lang_Long_LongCache : AllStatic {
1830 private:
1831 static int _static_cache_offset;
1832 public:
1833 static Symbol* symbol();
1834 static void compute_offsets(InstanceKlass* k);
1835 static refArrayOop cache(InstanceKlass *k);
1836 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1837 };
1838
1839 class java_lang_Character_CharacterCache : AllStatic {
1840 private:
1841 static int _static_cache_offset;
1842 public:
1843 static Symbol* symbol();
1844 static void compute_offsets(InstanceKlass* k);
1845 static refArrayOop cache(InstanceKlass *k);
1846 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1847 };
1848
1849 class java_lang_Short_ShortCache : AllStatic {
1850 private:
1851 static int _static_cache_offset;
1852 public:
1853 static Symbol* symbol();
1854 static void compute_offsets(InstanceKlass* k);
1855 static refArrayOop cache(InstanceKlass *k);
1856 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1857 };
1858
1859 class java_lang_Byte_ByteCache : AllStatic {
1860 private:
1861 static int _static_cache_offset;
1862 public:
1863 static Symbol* symbol();
1864 static void compute_offsets(InstanceKlass* k);
1865 static refArrayOop cache(InstanceKlass *k);
1866 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1867 };
1868
1869 // Interface to java.lang.InternalError objects
1870
1871 #define INTERNALERROR_INJECTED_FIELDS(macro) \
1872 macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1873
1874 class java_lang_InternalError : AllStatic {
1875 private:
1876 static int _during_unsafe_access_offset;
1877 public:
1878 static jboolean during_unsafe_access(oop internal_error);
1879 static void set_during_unsafe_access(oop internal_error);
1880 static void compute_offsets();
1881 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1882 };
1883
1884 // Use to declare fields that need to be injected into Java classes
1885 // for the JVM to use. The name_index and signature_index are
1886 // declared in vmSymbols. The may_be_java flag is used to declare
1887 // fields that might already exist in Java but should be injected if
1888 // they don't. Otherwise the field is unconditionally injected and
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