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src/hotspot/share/classfile/javaClasses.hpp

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 211 
 212 class java_lang_Class : AllStatic {
 213   friend class VMStructs;
 214   friend class JVMCIVMStructs;
 215 
 216  private:
 217 
 218   // The fake offsets are added by the class loader when java.lang.Class is loaded
 219 
 220   static int _klass_offset;
 221   static int _array_klass_offset;
 222 
 223   static int _oop_size_offset;
 224   static int _static_oop_field_count_offset;
 225 
 226   static int _protection_domain_offset;
 227   static int _signers_offset;
 228   static int _class_loader_offset;
 229   static int _module_offset;
 230   static int _component_mirror_offset;



 231   static int _name_offset;
 232   static int _source_file_offset;
 233   static int _classData_offset;
 234   static int _classRedefinedCount_offset;
 235 
 236   static bool _offsets_computed;
 237 
 238   static GrowableArray<Klass*>* _fixup_mirror_list;
 239   static GrowableArray<Klass*>* _fixup_module_field_list;
 240 
 241   static void set_protection_domain(oop java_class, oop protection_domain);
 242   static void set_class_loader(oop java_class, oop class_loader);
 243   static void set_component_mirror(oop java_class, oop comp_mirror);



 244   static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
 245                                        Handle classData, TRAPS);
 246   static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
 247  public:
 248   static void allocate_fixup_lists();
 249   static void compute_offsets();
 250 
 251   // Instance creation
 252   static void allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
 253                               Handle& mirror, Handle& comp_mirror, TRAPS); // returns mirror and comp_mirror
 254   static void create_mirror(Klass* k, Handle class_loader, Handle module,
 255                             Handle protection_domain, Handle classData, TRAPS);
 256   static void fixup_mirror(Klass* k, TRAPS);
 257   static oop  create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);

 258 
 259   // Archiving
 260   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 261   static void create_scratch_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
 262   static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
 263                                       Handle protection_domain,
 264                                       TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
 265 
 266   static void fixup_module_field(Klass* k, Handle module);
 267 
 268   // Conversion
 269   static Klass* as_Klass(oop java_class);
 270   static void set_klass(oop java_class, Klass* klass);
 271   static BasicType as_BasicType(oop java_class, Klass** reference_klass = nullptr);
 272   static Symbol* as_signature(oop java_class, bool intern_if_not_found);
 273   static void print_signature(oop java_class, outputStream *st);
 274   static const char* as_external_name(oop java_class);
 275   // Testing
 276   static bool is_instance(oop obj);
 277 
 278   static bool is_primitive(oop java_class);
 279   static BasicType primitive_type(oop java_class);
 280   static oop primitive_mirror(BasicType t);
 281   // JVM_NewArray support
 282   static Klass* array_klass_acquire(oop java_class);
 283   static void release_set_array_klass(oop java_class, Klass* klass);
 284   // compiler support for class operations
 285   static int klass_offset()                { CHECK_INIT(_klass_offset); }
 286   static int array_klass_offset()          { CHECK_INIT(_array_klass_offset); }



 287   // Support for classRedefinedCount field
 288   static int classRedefinedCount(oop the_class_mirror);
 289   static void set_classRedefinedCount(oop the_class_mirror, int value);
 290 
 291   // Support for embedded per-class oops
 292   static oop  protection_domain(oop java_class);
 293   static oop  component_mirror(oop java_class);





 294   static objArrayOop  signers(oop java_class);
 295   static void set_signers(oop java_class, objArrayOop signers);
 296   static oop  class_data(oop java_class);
 297   static void set_class_data(oop java_class, oop classData);
 298 
 299   static int component_mirror_offset() { return _component_mirror_offset; }
 300 
 301   static oop class_loader(oop java_class);
 302   static void set_module(oop java_class, oop module);
 303   static oop module(oop java_class);
 304 
 305   static oop name(Handle java_class, TRAPS);
 306 
 307   static oop source_file(oop java_class);
 308   static void set_source_file(oop java_class, oop source_file);
 309 
 310   static size_t oop_size(oop java_class);
 311   static void set_oop_size(HeapWord* java_class, size_t size);
 312   static int static_oop_field_count(oop java_class);
 313   static void set_static_oop_field_count(oop java_class, int size);
 314 
 315   static GrowableArray<Klass*>* fixup_mirror_list() {
 316     return _fixup_mirror_list;
 317   }
 318   static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
 319     _fixup_mirror_list = v;
 320   }

1277   static void       set_flags(oop mname, int flags);
1278 
1279   // Link through ResolvedMethodName field to get Method*
1280   static Method*        vmtarget(oop mname);
1281   static void       set_method(oop mname, oop method);
1282 
1283   static intptr_t       vmindex(oop mname);
1284   static void       set_vmindex(oop mname, intptr_t index);
1285 
1286   // Testers
1287   static bool is_subclass(Klass* klass) {
1288     return klass->is_subclass_of(vmClasses::MemberName_klass());
1289   }
1290   static bool is_instance(oop obj);
1291 
1292   static bool is_method(oop obj);
1293 
1294   // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1295   enum {
1296     MN_IS_METHOD             = 0x00010000, // method (not constructor)
1297     MN_IS_CONSTRUCTOR        = 0x00020000, // constructor
1298     MN_IS_FIELD              = 0x00040000, // field
1299     MN_IS_TYPE               = 0x00080000, // nested type
1300     MN_CALLER_SENSITIVE      = 0x00100000, // @CallerSensitive annotation detected
1301     MN_TRUSTED_FINAL         = 0x00200000, // trusted final field

1302     MN_REFERENCE_KIND_SHIFT  = 24, // refKind
1303     MN_REFERENCE_KIND_MASK   = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1304     MN_NESTMATE_CLASS        = 0x00000001,
1305     MN_HIDDEN_CLASS          = 0x00000002,
1306     MN_STRONG_LOADER_LINK    = 0x00000004,
1307     MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1308     // Lookup modes
1309     MN_MODULE_MODE           = 0x00000010,
1310     MN_UNCONDITIONAL_MODE    = 0x00000020,
1311     MN_TRUSTED_MODE          = -1
1312   };
1313 
1314   // Accessors for code generation:
1315   static int clazz_offset()   { CHECK_INIT(_clazz_offset); }
1316   static int type_offset()    { CHECK_INIT(_type_offset); }
1317   static int flags_offset()   { CHECK_INIT(_flags_offset); }
1318   static int method_offset()  { CHECK_INIT(_method_offset); }
1319   static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1320 };
1321 

1818 class java_lang_Short_ShortCache : AllStatic {
1819  private:
1820   static int _static_cache_offset;
1821  public:
1822   static Symbol* symbol();
1823   static void compute_offsets(InstanceKlass* k);
1824   static objArrayOop  cache(InstanceKlass *k);
1825   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1826 };
1827 
1828 class java_lang_Byte_ByteCache : AllStatic {
1829  private:
1830   static int _static_cache_offset;
1831  public:
1832   static Symbol* symbol();
1833   static void compute_offsets(InstanceKlass* k);
1834   static objArrayOop  cache(InstanceKlass *k);
1835   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1836 };
1837 
1838 
1839 // Interface to java.lang.InternalError objects
1840 
1841 #define INTERNALERROR_INJECTED_FIELDS(macro)                      \
1842   macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1843 
1844 class java_lang_InternalError : AllStatic {
1845  private:
1846   static int _during_unsafe_access_offset;
1847  public:
1848   static jboolean during_unsafe_access(oop internal_error);
1849   static void set_during_unsafe_access(oop internal_error);
1850   static void compute_offsets();
1851   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1852 };
1853 
1854 // Use to declare fields that need to be injected into Java classes
1855 // for the JVM to use.  The name_index and signature_index are
1856 // declared in vmSymbols.  The may_be_java flag is used to declare
1857 // fields that might already exist in Java but should be injected if
1858 // they don't.  Otherwise the field is unconditionally injected and

 211 
 212 class java_lang_Class : AllStatic {
 213   friend class VMStructs;
 214   friend class JVMCIVMStructs;
 215 
 216  private:
 217 
 218   // The fake offsets are added by the class loader when java.lang.Class is loaded
 219 
 220   static int _klass_offset;
 221   static int _array_klass_offset;
 222 
 223   static int _oop_size_offset;
 224   static int _static_oop_field_count_offset;
 225 
 226   static int _protection_domain_offset;
 227   static int _signers_offset;
 228   static int _class_loader_offset;
 229   static int _module_offset;
 230   static int _component_mirror_offset;
 231   static int _primary_mirror_offset;
 232   static int _secondary_mirror_offset;
 233 
 234   static int _name_offset;
 235   static int _source_file_offset;
 236   static int _classData_offset;
 237   static int _classRedefinedCount_offset;
 238 
 239   static bool _offsets_computed;
 240 
 241   static GrowableArray<Klass*>* _fixup_mirror_list;
 242   static GrowableArray<Klass*>* _fixup_module_field_list;
 243 
 244   static void set_protection_domain(oop java_class, oop protection_domain);
 245   static void set_class_loader(oop java_class, oop class_loader);
 246   static void set_component_mirror(oop java_class, oop comp_mirror);
 247   static void set_primary_mirror(oop java_class, oop comp_mirror);
 248   static void set_secondary_mirror(oop java_class, oop comp_mirror);
 249 
 250   static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
 251                                        Handle classData, TRAPS);
 252   static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
 253  public:
 254   static void allocate_fixup_lists();
 255   static void compute_offsets();
 256 
 257   // Instance creation
 258   static void allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
 259                               Handle& mirror, Handle& comp_mirror, TRAPS); // returns mirror and comp_mirror
 260   static void create_mirror(Klass* k, Handle class_loader, Handle module,
 261                             Handle protection_domain, Handle classData, TRAPS);
 262   static void fixup_mirror(Klass* k, TRAPS);
 263   static oop  create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
 264   static oop  create_secondary_mirror(Klass* k, Handle mirror, TRAPS);
 265 
 266   // Archiving
 267   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
 268   static void create_scratch_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
 269   static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
 270                                       Handle protection_domain,
 271                                       TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
 272 
 273   static void fixup_module_field(Klass* k, Handle module);
 274 
 275   // Conversion
 276   static Klass* as_Klass(oop java_class);
 277   static void set_klass(oop java_class, Klass* klass);
 278   static BasicType as_BasicType(oop java_class, Klass** reference_klass = nullptr);
 279   static Symbol* as_signature(oop java_class, bool intern_if_not_found);
 280   static void print_signature(oop java_class, outputStream *st);
 281   static const char* as_external_name(oop java_class);
 282   // Testing
 283   static bool is_instance(oop obj);
 284 
 285   static bool is_primitive(oop java_class);
 286   static BasicType primitive_type(oop java_class);
 287   static oop primitive_mirror(BasicType t);
 288   // JVM_NewArray support
 289   static Klass* array_klass_acquire(oop java_class);
 290   static void release_set_array_klass(oop java_class, Klass* klass);
 291   // compiler support for class operations
 292   static int klass_offset()                { CHECK_INIT(_klass_offset); }
 293   static int array_klass_offset()          { CHECK_INIT(_array_klass_offset); }
 294   static int component_mirror_offset()     { CHECK_INIT(_component_mirror_offset); }
 295   static int primary_mirror_offset()       { CHECK_INIT(_primary_mirror_offset); }
 296   static int secondary_mirror_offset()     { CHECK_INIT(_secondary_mirror_offset); }
 297   // Support for classRedefinedCount field
 298   static int classRedefinedCount(oop the_class_mirror);
 299   static void set_classRedefinedCount(oop the_class_mirror, int value);
 300 
 301   // Support for embedded per-class oops
 302   static oop  protection_domain(oop java_class);
 303   static oop  component_mirror(oop java_class);
 304   static oop  primary_mirror(oop java_class);
 305   static oop  secondary_mirror(oop java_class);
 306   static bool is_primary_mirror(oop java_class);
 307   static bool is_secondary_mirror(oop java_class);
 308 
 309   static objArrayOop  signers(oop java_class);
 310   static void set_signers(oop java_class, objArrayOop signers);
 311   static oop  class_data(oop java_class);
 312   static void set_class_data(oop java_class, oop classData);
 313 


 314   static oop class_loader(oop java_class);
 315   static void set_module(oop java_class, oop module);
 316   static oop module(oop java_class);
 317 
 318   static oop name(Handle java_class, TRAPS);
 319 
 320   static oop source_file(oop java_class);
 321   static void set_source_file(oop java_class, oop source_file);
 322 
 323   static size_t oop_size(oop java_class);
 324   static void set_oop_size(HeapWord* java_class, size_t size);
 325   static int static_oop_field_count(oop java_class);
 326   static void set_static_oop_field_count(oop java_class, int size);
 327 
 328   static GrowableArray<Klass*>* fixup_mirror_list() {
 329     return _fixup_mirror_list;
 330   }
 331   static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
 332     _fixup_mirror_list = v;
 333   }

1290   static void       set_flags(oop mname, int flags);
1291 
1292   // Link through ResolvedMethodName field to get Method*
1293   static Method*        vmtarget(oop mname);
1294   static void       set_method(oop mname, oop method);
1295 
1296   static intptr_t       vmindex(oop mname);
1297   static void       set_vmindex(oop mname, intptr_t index);
1298 
1299   // Testers
1300   static bool is_subclass(Klass* klass) {
1301     return klass->is_subclass_of(vmClasses::MemberName_klass());
1302   }
1303   static bool is_instance(oop obj);
1304 
1305   static bool is_method(oop obj);
1306 
1307   // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1308   enum {
1309     MN_IS_METHOD             = 0x00010000, // method (not constructor)
1310     MN_IS_OBJECT_CONSTRUCTOR = 0x00020000, // constructor
1311     MN_IS_FIELD              = 0x00040000, // field
1312     MN_IS_TYPE               = 0x00080000, // nested type
1313     MN_CALLER_SENSITIVE      = 0x00100000, // @CallerSensitive annotation detected
1314     MN_TRUSTED_FINAL         = 0x00200000, // trusted final field
1315     MN_FLATTENED             = 0x00400000, // flattened field
1316     MN_REFERENCE_KIND_SHIFT  = 24, // refKind
1317     MN_REFERENCE_KIND_MASK   = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1318     MN_NESTMATE_CLASS        = 0x00000001,
1319     MN_HIDDEN_CLASS          = 0x00000002,
1320     MN_STRONG_LOADER_LINK    = 0x00000004,
1321     MN_ACCESS_VM_ANNOTATIONS = 0x00000008,
1322     // Lookup modes
1323     MN_MODULE_MODE           = 0x00000010,
1324     MN_UNCONDITIONAL_MODE    = 0x00000020,
1325     MN_TRUSTED_MODE          = -1
1326   };
1327 
1328   // Accessors for code generation:
1329   static int clazz_offset()   { CHECK_INIT(_clazz_offset); }
1330   static int type_offset()    { CHECK_INIT(_type_offset); }
1331   static int flags_offset()   { CHECK_INIT(_flags_offset); }
1332   static int method_offset()  { CHECK_INIT(_method_offset); }
1333   static int vmindex_offset() { CHECK_INIT(_vmindex_offset); }
1334 };
1335 

1832 class java_lang_Short_ShortCache : AllStatic {
1833  private:
1834   static int _static_cache_offset;
1835  public:
1836   static Symbol* symbol();
1837   static void compute_offsets(InstanceKlass* k);
1838   static objArrayOop  cache(InstanceKlass *k);
1839   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1840 };
1841 
1842 class java_lang_Byte_ByteCache : AllStatic {
1843  private:
1844   static int _static_cache_offset;
1845  public:
1846   static Symbol* symbol();
1847   static void compute_offsets(InstanceKlass* k);
1848   static objArrayOop  cache(InstanceKlass *k);
1849   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1850 };
1851 

1852 // Interface to java.lang.InternalError objects
1853 
1854 #define INTERNALERROR_INJECTED_FIELDS(macro)                      \
1855   macro(java_lang_InternalError, during_unsafe_access, bool_signature, false)
1856 
1857 class java_lang_InternalError : AllStatic {
1858  private:
1859   static int _during_unsafe_access_offset;
1860  public:
1861   static jboolean during_unsafe_access(oop internal_error);
1862   static void set_during_unsafe_access(oop internal_error);
1863   static void compute_offsets();
1864   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1865 };
1866 
1867 // Use to declare fields that need to be injected into Java classes
1868 // for the JVM to use.  The name_index and signature_index are
1869 // declared in vmSymbols.  The may_be_java flag is used to declare
1870 // fields that might already exist in Java but should be injected if
1871 // they don't.  Otherwise the field is unconditionally injected and
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