< prev index next >

src/hotspot/share/oops/instanceKlass.hpp

Print this page

   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_OOPS_INSTANCEKLASS_HPP
  26 #define SHARE_OOPS_INSTANCEKLASS_HPP
  27 

  28 #include "memory/referenceType.hpp"
  29 #include "oops/annotations.hpp"
  30 #include "oops/constMethod.hpp"
  31 #include "oops/fieldInfo.hpp"
  32 #include "oops/instanceKlassMiscStatus.hpp"
  33 #include "oops/instanceOop.hpp"
  34 #include "runtime/handles.hpp"
  35 #include "utilities/accessFlags.hpp"
  36 #include "utilities/align.hpp"
  37 #include "utilities/macros.hpp"
  38 #if INCLUDE_JFR
  39 #include "jfr/support/jfrKlassExtension.hpp"
  40 #endif
  41 
  42 class klassItable;
  43 class RecordComponent;
  44 
  45 // An InstanceKlass is the VM level representation of a Java class.
  46 // It contains all information needed for at class at execution runtime.
  47 
  48 //  InstanceKlass embedded field layout (after declared fields):
  49 //    [EMBEDDED Java vtable             ] size in words = vtable_len
  50 //    [EMBEDDED nonstatic oop-map blocks] size in words = nonstatic_oop_map_size
  51 //      The embedded nonstatic oop-map blocks are short pairs (offset, length)
  52 //      indicating where oops are located in instances of this klass.
  53 //    [EMBEDDED implementor of the interface] only exist for interface


  54 
  55 
  56 // forward declaration for class -- see below for definition
  57 #if INCLUDE_JVMTI
  58 class BreakpointInfo;
  59 #endif
  60 class ClassFileParser;
  61 class ClassFileStream;
  62 class KlassDepChange;
  63 class DependencyContext;
  64 class fieldDescriptor;
  65 class jniIdMapBase;
  66 class JNIid;
  67 class JvmtiCachedClassFieldMap;
  68 class nmethodBucket;
  69 class OopMapCache;

  70 class InterpreterOopMap;
  71 class PackageEntry;
  72 class ModuleEntry;
  73 
  74 // This is used in iterators below.
  75 class FieldClosure: public StackObj {
  76 public:
  77   virtual void do_field(fieldDescriptor* fd) = 0;
  78 };
  79 
  80 // Print fields.
  81 // If "obj" argument to constructor is NULL, prints static fields, otherwise prints non-static fields.
  82 class FieldPrinter: public FieldClosure {
  83    oop _obj;
  84    outputStream* _st;
  85  public:
  86    FieldPrinter(outputStream* st, oop obj = NULL) : _obj(obj), _st(st) {}
  87    void do_field(fieldDescriptor* fd);
  88 };
  89 

 110     return another_offset == end_offset();
 111   }
 112 
 113   // sizeof(OopMapBlock) in words.
 114   static const int size_in_words() {
 115     return align_up((int)sizeof(OopMapBlock), wordSize) >>
 116       LogBytesPerWord;
 117   }
 118 
 119   static int compare_offset(const OopMapBlock* a, const OopMapBlock* b) {
 120     return a->offset() - b->offset();
 121   }
 122 
 123  private:
 124   int  _offset;
 125   uint _count;
 126 };
 127 
 128 struct JvmtiCachedClassFileData;
 129 

















 130 class InstanceKlass: public Klass {
 131   friend class VMStructs;
 132   friend class JVMCIVMStructs;
 133   friend class ClassFileParser;
 134   friend class CompileReplay;

 135 
 136  public:
 137   static const KlassKind Kind = InstanceKlassKind;
 138 
 139  protected:
 140   InstanceKlass(const ClassFileParser& parser, KlassKind kind = Kind, ReferenceType reference_type = REF_NONE);
 141 
 142  public:
 143   InstanceKlass() { assert(DumpSharedSpaces || UseSharedSpaces, "only for CDS"); }
 144 
 145   // See "The Java Virtual Machine Specification" section 2.16.2-5 for a detailed description
 146   // of the class loading & initialization procedure, and the use of the states.
 147   enum ClassState : u1 {
 148     allocated,                          // allocated (but not yet linked)
 149     loaded,                             // loaded and inserted in class hierarchy (but not linked yet)
 150     being_linked,                       // currently running verifier and rewriter
 151     linked,                             // successfully linked/verified (but not initialized yet)
 152     being_initialized,                  // currently running class initializer
 153     fully_initialized,                  // initialized (successful final state)
 154     initialization_error                // error happened during initialization
 155   };
 156 
 157  private:
 158   static InstanceKlass* allocate_instance_klass(const ClassFileParser& parser, TRAPS);
 159 
 160  protected:
 161   // If you add a new field that points to any metaspace object, you
 162   // must add this field to InstanceKlass::metaspace_pointers_do().
 163 
 164   // Annotations for this class
 165   Annotations*    _annotations;
 166   // Package this class is defined in
 167   PackageEntry*   _package_entry;
 168   // Array classes holding elements of this class.
 169   ObjArrayKlass* volatile _array_klasses;
 170   // Constant pool for this class.
 171   ConstantPool* _constants;
 172   // The InnerClasses attribute and EnclosingMethod attribute. The
 173   // _inner_classes is an array of shorts. If the class has InnerClasses
 174   // attribute, then the _inner_classes array begins with 4-tuples of shorts
 175   // [inner_class_info_index, outer_class_info_index,
 176   // inner_name_index, inner_class_access_flags] for the InnerClasses
 177   // attribute. If the EnclosingMethod attribute exists, it occupies the
 178   // last two shorts [class_index, method_index] of the array. If only
 179   // the InnerClasses attribute exists, the _inner_classes array length is
 180   // number_of_inner_classes * 4. If the class has both InnerClasses
 181   // and EnclosingMethod attributes the _inner_classes array length is
 182   // number_of_inner_classes * 4 + enclosing_method_attribute_size.
 183   Array<jushort>* _inner_classes;
 184 
 185   // The NestMembers attribute. An array of shorts, where each is a
 186   // class info index for the class that is a nest member. This data
 187   // has not been validated.
 188   Array<jushort>* _nest_members;
 189 

 268   // Int array containing the original order of method in the class file (for JVMTI).
 269   Array<int>*     _method_ordering;
 270   // Int array containing the vtable_indices for default_methods
 271   // offset matches _default_methods offset
 272   Array<int>*     _default_vtable_indices;
 273 
 274   // Instance and static variable information, starts with 6-tuples of shorts
 275   // [access, name index, sig index, initval index, low_offset, high_offset]
 276   // for all fields, followed by the generic signature data at the end of
 277   // the array. Only fields with generic signature attributes have the generic
 278   // signature data set in the array. The fields array looks like following:
 279   //
 280   // f1: [access, name index, sig index, initial value index, low_offset, high_offset]
 281   // f2: [access, name index, sig index, initial value index, low_offset, high_offset]
 282   //      ...
 283   // fn: [access, name index, sig index, initial value index, low_offset, high_offset]
 284   //     [generic signature index]
 285   //     [generic signature index]
 286   //     ...
 287   Array<u2>*      _fields;



 288 
 289   // embedded Java vtable follows here
 290   // embedded Java itables follows here
 291   // embedded static fields follows here
 292   // embedded nonstatic oop-map blocks follows here
 293   // embedded implementor of this interface follows here
 294   //   The embedded implementor only exists if the current klass is an
 295   //   interface. The possible values of the implementor fall into following
 296   //   three cases:
 297   //     NULL: no implementor.
 298   //     A Klass* that's not itself: one implementor.
 299   //     Itself: more than one implementors.
 300   //
 301 
 302   friend class SystemDictionary;
 303 
 304   static bool _disable_method_binary_search;
 305 
 306   // Controls finalizer registration
 307   static bool _finalization_enabled;

 322   bool is_shared_unregistered_class() const { return _misc_status.is_shared_unregistered_class(); }
 323 
 324   // Check if the class can be shared in CDS
 325   bool is_shareable() const;
 326 
 327   bool shared_loading_failed() const { return _misc_status.shared_loading_failed(); }
 328 
 329   void set_shared_loading_failed() { _misc_status.set_shared_loading_failed(true); }
 330 
 331 #if INCLUDE_CDS
 332   void set_shared_class_loader_type(s2 loader_type) { _misc_status.set_shared_class_loader_type(loader_type); }
 333   void assign_class_loader_type() { _misc_status.assign_class_loader_type(_class_loader_data); }
 334 #endif
 335 
 336   bool has_nonstatic_fields() const        { return _misc_status.has_nonstatic_fields(); }
 337   void set_has_nonstatic_fields(bool b)    { _misc_status.set_has_nonstatic_fields(b); }
 338 
 339   bool has_localvariable_table() const     { return _misc_status.has_localvariable_table(); }
 340   void set_has_localvariable_table(bool b) { _misc_status.set_has_localvariable_table(b); }
 341 




























 342   // field sizes
 343   int nonstatic_field_size() const         { return _nonstatic_field_size; }
 344   void set_nonstatic_field_size(int size)  { _nonstatic_field_size = size; }
 345 
 346   int static_field_size() const            { return _static_field_size; }
 347   void set_static_field_size(int size)     { _static_field_size = size; }
 348 
 349   int static_oop_field_count() const       { return (int)_static_oop_field_count; }
 350   void set_static_oop_field_count(u2 size) { _static_oop_field_count = size; }
 351 
 352   // Java itable
 353   int  itable_length() const               { return _itable_len; }
 354   void set_itable_length(int len)          { _itable_len = len; }
 355 
 356   // array klasses
 357   ObjArrayKlass* array_klasses() const     { return _array_klasses; }
 358   inline ObjArrayKlass* array_klasses_acquire() const; // load with acquire semantics
 359   inline void release_set_array_klasses(ObjArrayKlass* k); // store with release semantics
 360 
 361   // methods
 362   Array<Method*>* methods() const          { return _methods; }
 363   void set_methods(Array<Method*>* a)      { _methods = a; }
 364   Method* method_with_idnum(int idnum);
 365   Method* method_with_orig_idnum(int idnum);
 366   Method* method_with_orig_idnum(int idnum, int version);
 367 
 368   // method ordering
 369   Array<int>* method_ordering() const     { return _method_ordering; }
 370   void set_method_ordering(Array<int>* m) { _method_ordering = m; }
 371   void copy_method_ordering(const intArray* m, TRAPS);
 372 
 373   // default_methods
 374   Array<Method*>* default_methods() const  { return _default_methods; }
 375   void set_default_methods(Array<Method*>* a) { _default_methods = a; }
 376 
 377   // default method vtable_indices
 378   Array<int>* default_vtable_indices() const { return _default_vtable_indices; }
 379   void set_default_vtable_indices(Array<int>* v) { _default_vtable_indices = v; }

 383   Array<InstanceKlass*>* local_interfaces() const          { return _local_interfaces; }
 384   void set_local_interfaces(Array<InstanceKlass*>* a)      {
 385     guarantee(_local_interfaces == NULL || a == NULL, "Just checking");
 386     _local_interfaces = a; }
 387 
 388   Array<InstanceKlass*>* transitive_interfaces() const     { return _transitive_interfaces; }
 389   void set_transitive_interfaces(Array<InstanceKlass*>* a) {
 390     guarantee(_transitive_interfaces == NULL || a == NULL, "Just checking");
 391     _transitive_interfaces = a;
 392   }
 393 
 394  private:
 395   friend class fieldDescriptor;
 396   FieldInfo* field(int index) const { return FieldInfo::from_field_array(_fields, index); }
 397 
 398  public:
 399   int     field_offset      (int index) const { return field(index)->offset(); }
 400   int     field_access_flags(int index) const { return field(index)->access_flags(); }
 401   Symbol* field_name        (int index) const { return field(index)->name(constants()); }
 402   Symbol* field_signature   (int index) const { return field(index)->signature(constants()); }


 403 
 404   // Number of Java declared fields
 405   int java_fields_count() const           { return (int)_java_fields_count; }
 406 
 407   Array<u2>* fields() const            { return _fields; }
 408   void set_fields(Array<u2>* f, u2 java_fields_count) {
 409     guarantee(_fields == NULL || f == NULL, "Just checking");
 410     _fields = f;
 411     _java_fields_count = java_fields_count;
 412   }
 413 



 414   // inner classes
 415   Array<u2>* inner_classes() const       { return _inner_classes; }
 416   void set_inner_classes(Array<u2>* f)   { _inner_classes = f; }
 417 
 418   // nest members
 419   Array<u2>* nest_members() const     { return _nest_members; }
 420   void set_nest_members(Array<u2>* m) { _nest_members = m; }
 421 
 422   // nest-host index
 423   jushort nest_host_index() const { return _nest_host_index; }
 424   void set_nest_host_index(u2 i)  { _nest_host_index = i; }
 425   // dynamic nest member support
 426   void set_nest_host(InstanceKlass* host);
 427 
 428   // record components
 429   Array<RecordComponent*>* record_components() const { return _record_components; }
 430   void set_record_components(Array<RecordComponent*>* record_components) {
 431     _record_components = record_components;
 432   }
 433   bool is_record() const;

 525     }
 526     ~LockLinkState() {
 527       if (!_ik->is_linked()) {
 528         // Reset to loaded if linking failed.
 529         _ik->set_initialization_state_and_notify(loaded, _current);
 530       }
 531     }
 532   };
 533 
 534   // is this a sealed class
 535   bool is_sealed() const;
 536 
 537   // defineClass specified verification
 538   bool should_verify_class() const         { return _misc_status.should_verify_class(); }
 539   void set_should_verify_class(bool value) { _misc_status.set_should_verify_class(value); }
 540 
 541   // marking
 542   bool is_marked_dependent() const         { return _is_marked_dependent; }
 543   void set_is_marked_dependent(bool value) { _is_marked_dependent = value; }
 544 



 545   // initialization (virtuals from Klass)
 546   bool should_be_initialized() const;  // means that initialize should be called
 547   void initialize(TRAPS);
 548   void link_class(TRAPS);
 549   bool link_class_or_fail(TRAPS); // returns false on failure
 550   void rewrite_class(TRAPS);
 551   void link_methods(TRAPS);
 552   Method* class_initializer() const;
 553 
 554   // reference type
 555   ReferenceType reference_type() const     { return (ReferenceType)_reference_type; }
 556 
 557   // this class cp index
 558   u2 this_class_index() const             { return _this_class_index; }
 559   void set_this_class_index(u2 index)     { _this_class_index = index; }
 560 
 561   static ByteSize reference_type_offset() { return in_ByteSize(offset_of(InstanceKlass, _reference_type)); }
 562 
 563   // find local field, returns true if found
 564   bool find_local_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const;

 867 
 868   // On-stack replacement support
 869   nmethod* osr_nmethods_head() const         { return _osr_nmethods_head; };
 870   void set_osr_nmethods_head(nmethod* h)     { _osr_nmethods_head = h; };
 871   void add_osr_nmethod(nmethod* n);
 872   bool remove_osr_nmethod(nmethod* n);
 873   int mark_osr_nmethods(const Method* m);
 874   nmethod* lookup_osr_nmethod(const Method* m, int bci, int level, bool match_level) const;
 875 
 876 #if INCLUDE_JVMTI
 877   // Breakpoint support (see methods on Method* for details)
 878   BreakpointInfo* breakpoints() const       { return _breakpoints; };
 879   void set_breakpoints(BreakpointInfo* bps) { _breakpoints = bps; };
 880 #endif
 881 
 882   // support for stub routines
 883   static ByteSize init_state_offset()  { return in_ByteSize(offset_of(InstanceKlass, _init_state)); }
 884   JFR_ONLY(DEFINE_KLASS_TRACE_ID_OFFSET;)
 885   static ByteSize init_thread_offset() { return in_ByteSize(offset_of(InstanceKlass, _init_thread)); }
 886 



 887   // subclass/subinterface checks
 888   bool implements_interface(Klass* k) const;
 889   bool is_same_or_direct_interface(Klass* k) const;
 890 
 891 #ifdef ASSERT
 892   // check whether this class or one of its superclasses was redefined
 893   bool has_redefined_this_or_super() const;
 894 #endif
 895 
 896   // Access to the implementor of an interface.
 897   InstanceKlass* implementor() const;
 898   void set_implementor(InstanceKlass* ik);
 899   int  nof_implementors() const;
 900   void add_implementor(InstanceKlass* ik);  // ik is a new class that implements this interface
 901   void init_implementor();           // initialize
 902 
 903   // link this class into the implementors list of every interface it implements
 904   void process_interfaces();
 905 
 906   // virtual operations from Klass

 922 
 923   static InstanceKlass* cast(Klass* k) {
 924     return const_cast<InstanceKlass*>(cast(const_cast<const Klass*>(k)));
 925   }
 926 
 927   static const InstanceKlass* cast(const Klass* k) {
 928     assert(k != NULL, "k should not be null");
 929     assert(k->is_instance_klass(), "cast to InstanceKlass");
 930     return static_cast<const InstanceKlass*>(k);
 931   }
 932 
 933   virtual InstanceKlass* java_super() const {
 934     return (super() == NULL) ? NULL : cast(super());
 935   }
 936 
 937   // Sizing (in words)
 938   static int header_size()            { return sizeof(InstanceKlass)/wordSize; }
 939 
 940   static int size(int vtable_length, int itable_length,
 941                   int nonstatic_oop_map_size,
 942                   bool is_interface) {

 943     return align_metadata_size(header_size() +
 944            vtable_length +
 945            itable_length +
 946            nonstatic_oop_map_size +
 947            (is_interface ? (int)sizeof(Klass*)/wordSize : 0));


 948   }
 949 
 950   int size() const                    { return size(vtable_length(),
 951                                                itable_length(),
 952                                                nonstatic_oop_map_size(),
 953                                                is_interface());


 954   }
 955 
 956 
 957   inline intptr_t* start_of_itable() const;
 958   inline intptr_t* end_of_itable() const;
 959   inline int itable_offset_in_words() const;
 960   inline oop static_field_base_raw();

 961 
 962   inline OopMapBlock* start_of_nonstatic_oop_maps() const;
 963   inline Klass** end_of_nonstatic_oop_maps() const;
 964 
 965   inline InstanceKlass* volatile* adr_implementor() const;
 966 






 967   // Use this to return the size of an instance in heap words:
 968   int size_helper() const {
 969     return layout_helper_to_size_helper(layout_helper());
 970   }
 971 
 972   // This bit is initialized in classFileParser.cpp.
 973   // It is false under any of the following conditions:
 974   //  - the class is abstract (including any interface)
 975   //  - the class has a finalizer (if !RegisterFinalizersAtInit)
 976   //  - the class size is larger than FastAllocateSizeLimit
 977   //  - the class is java/lang/Class, which cannot be allocated directly
 978   bool can_be_fastpath_allocated() const {
 979     return !layout_helper_needs_slow_path(layout_helper());
 980   }
 981 
 982   // Java itable
 983   klassItable itable() const;        // return klassItable wrapper
 984   Method* method_at_itable(InstanceKlass* holder, int index, TRAPS);
 985   Method* method_at_itable_or_null(InstanceKlass* holder, int index, bool& itable_entry_found);
 986   int vtable_index_of_interface_method(Method* method);
 987 
 988 #if INCLUDE_JVMTI

1002   static void deallocate_methods(ClassLoaderData* loader_data,
1003                                  Array<Method*>* methods);
1004   void static deallocate_interfaces(ClassLoaderData* loader_data,
1005                                     const Klass* super_klass,
1006                                     Array<InstanceKlass*>* local_interfaces,
1007                                     Array<InstanceKlass*>* transitive_interfaces);
1008   void static deallocate_record_components(ClassLoaderData* loader_data,
1009                                            Array<RecordComponent*>* record_component);
1010 
1011   // The constant pool is on stack if any of the methods are executing or
1012   // referenced by handles.
1013   bool on_stack() const { return _constants->on_stack(); }
1014 
1015   // callbacks for actions during class unloading
1016   static void unload_class(InstanceKlass* ik);
1017 
1018   virtual void release_C_heap_structures(bool release_sub_metadata = true);
1019 
1020   // Naming
1021   const char* signature_name() const;

1022 
1023   // Oop fields (and metadata) iterators
1024   //
1025   // The InstanceKlass iterators also visits the Object's klass.
1026 
1027   // Forward iteration
1028  public:
1029   // Iterate over all oop fields in the oop maps.
1030   template <typename T, class OopClosureType>
1031   inline void oop_oop_iterate_oop_maps(oop obj, OopClosureType* closure);
1032 
1033   // Iterate over all oop fields and metadata.
1034   template <typename T, class OopClosureType>
1035   inline void oop_oop_iterate(oop obj, OopClosureType* closure);
1036 
1037   // Iterate over all oop fields in one oop map.
1038   template <typename T, class OopClosureType>
1039   inline void oop_oop_iterate_oop_map(OopMapBlock* map, oop obj, OopClosureType* closure);
1040 
1041 

1123   static Method* find_method_impl(const Array<Method*>* methods,
1124                                   const Symbol* name,
1125                                   const Symbol* signature,
1126                                   OverpassLookupMode overpass_mode,
1127                                   StaticLookupMode static_mode,
1128                                   PrivateLookupMode private_mode);
1129 
1130 #if INCLUDE_JVMTI
1131   // RedefineClasses support
1132   void link_previous_versions(InstanceKlass* pv) { _previous_versions = pv; }
1133   void mark_newly_obsolete_methods(Array<Method*>* old_methods, int emcp_method_count);
1134 #endif
1135   // log class name to classlist
1136   void log_to_classlist() const;
1137 public:
1138 
1139 #if INCLUDE_CDS
1140   // CDS support - remove and restore oops from metadata. Oops are not shared.
1141   virtual void remove_unshareable_info();
1142   virtual void remove_java_mirror();
1143   void restore_unshareable_info(ClassLoaderData* loader_data, Handle protection_domain, PackageEntry* pkg_entry, TRAPS);
1144   void init_shared_package_entry();
1145   bool can_be_verified_at_dumptime() const;
1146 #endif
1147 
1148   jint compute_modifier_flags() const;
1149 
1150 public:
1151   // JVMTI support
1152   jint jvmti_class_status() const;
1153 
1154   virtual void metaspace_pointers_do(MetaspaceClosure* iter);
1155 
1156  public:
1157   // Printing
1158   void print_on(outputStream* st) const;
1159   void print_value_on(outputStream* st) const;
1160 
1161   void oop_print_value_on(oop obj, outputStream* st);
1162 
1163   void oop_print_on      (oop obj, outputStream* st);

   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_OOPS_INSTANCEKLASS_HPP
  26 #define SHARE_OOPS_INSTANCEKLASS_HPP
  27 
  28 #include "code/vmreg.hpp"
  29 #include "memory/referenceType.hpp"
  30 #include "oops/annotations.hpp"
  31 #include "oops/constMethod.hpp"
  32 #include "oops/fieldInfo.hpp"
  33 #include "oops/instanceKlassMiscStatus.hpp"
  34 #include "oops/instanceOop.hpp"
  35 #include "runtime/handles.hpp"
  36 #include "utilities/accessFlags.hpp"
  37 #include "utilities/align.hpp"
  38 #include "utilities/macros.hpp"
  39 #if INCLUDE_JFR
  40 #include "jfr/support/jfrKlassExtension.hpp"
  41 #endif
  42 
  43 class klassItable;
  44 class RecordComponent;
  45 
  46 // An InstanceKlass is the VM level representation of a Java class.
  47 // It contains all information needed for at class at execution runtime.
  48 
  49 //  InstanceKlass embedded field layout (after declared fields):
  50 //    [EMBEDDED Java vtable             ] size in words = vtable_len
  51 //    [EMBEDDED nonstatic oop-map blocks] size in words = nonstatic_oop_map_size
  52 //      The embedded nonstatic oop-map blocks are short pairs (offset, length)
  53 //      indicating where oops are located in instances of this klass.
  54 //    [EMBEDDED implementor of the interface] only exist for interface
  55 //    [EMBEDDED inline_type_field_klasses] only if has_inline_fields() == true
  56 //    [EMBEDDED InlineKlassFixedBlock] only if is an InlineKlass instance
  57 
  58 
  59 // forward declaration for class -- see below for definition
  60 #if INCLUDE_JVMTI
  61 class BreakpointInfo;
  62 #endif
  63 class ClassFileParser;
  64 class ClassFileStream;
  65 class KlassDepChange;
  66 class DependencyContext;
  67 class fieldDescriptor;
  68 class jniIdMapBase;
  69 class JNIid;
  70 class JvmtiCachedClassFieldMap;
  71 class nmethodBucket;
  72 class OopMapCache;
  73 class BufferedInlineTypeBlob;
  74 class InterpreterOopMap;
  75 class PackageEntry;
  76 class ModuleEntry;
  77 
  78 // This is used in iterators below.
  79 class FieldClosure: public StackObj {
  80 public:
  81   virtual void do_field(fieldDescriptor* fd) = 0;
  82 };
  83 
  84 // Print fields.
  85 // If "obj" argument to constructor is NULL, prints static fields, otherwise prints non-static fields.
  86 class FieldPrinter: public FieldClosure {
  87    oop _obj;
  88    outputStream* _st;
  89  public:
  90    FieldPrinter(outputStream* st, oop obj = NULL) : _obj(obj), _st(st) {}
  91    void do_field(fieldDescriptor* fd);
  92 };
  93 

 114     return another_offset == end_offset();
 115   }
 116 
 117   // sizeof(OopMapBlock) in words.
 118   static const int size_in_words() {
 119     return align_up((int)sizeof(OopMapBlock), wordSize) >>
 120       LogBytesPerWord;
 121   }
 122 
 123   static int compare_offset(const OopMapBlock* a, const OopMapBlock* b) {
 124     return a->offset() - b->offset();
 125   }
 126 
 127  private:
 128   int  _offset;
 129   uint _count;
 130 };
 131 
 132 struct JvmtiCachedClassFileData;
 133 
 134 class SigEntry;
 135 
 136 class InlineKlassFixedBlock {
 137   Array<SigEntry>** _extended_sig;
 138   Array<VMRegPair>** _return_regs;
 139   address* _pack_handler;
 140   address* _pack_handler_jobject;
 141   address* _unpack_handler;
 142   int* _default_value_offset;
 143   ArrayKlass** _null_free_inline_array_klasses;
 144   int _alignment;
 145   int _first_field_offset;
 146   int _exact_size_in_bytes;
 147 
 148   friend class InlineKlass;
 149 };
 150 
 151 class InstanceKlass: public Klass {
 152   friend class VMStructs;
 153   friend class JVMCIVMStructs;
 154   friend class ClassFileParser;
 155   friend class CompileReplay;
 156   friend class TemplateTable;
 157 
 158  public:
 159   static const KlassKind Kind = InstanceKlassKind;
 160 
 161  protected:
 162   InstanceKlass(const ClassFileParser& parser, KlassKind kind = Kind, ReferenceType reference_type = REF_NONE);
 163 
 164  public:
 165   InstanceKlass() { assert(DumpSharedSpaces || UseSharedSpaces, "only for CDS"); }
 166 
 167   // See "The Java Virtual Machine Specification" section 2.16.2-5 for a detailed description
 168   // of the class loading & initialization procedure, and the use of the states.
 169   enum ClassState : u1 {
 170     allocated,                          // allocated (but not yet linked)
 171     loaded,                             // loaded and inserted in class hierarchy (but not linked yet)
 172     being_linked,                       // currently running verifier and rewriter
 173     linked,                             // successfully linked/verified (but not initialized yet)
 174     being_initialized,                  // currently running class initializer
 175     fully_initialized,                  // initialized (successful final state)
 176     initialization_error                // error happened during initialization
 177   };
 178 
 179  private:
 180   static InstanceKlass* allocate_instance_klass(const ClassFileParser& parser, TRAPS);
 181 
 182  protected:
 183   // If you add a new field that points to any metaspace object, you
 184   // must add this field to InstanceKlass::metaspace_pointers_do().
 185 
 186   // Annotations for this class
 187   Annotations*    _annotations;
 188   // Package this class is defined in
 189   PackageEntry*   _package_entry;
 190   // Array classes holding elements of this class.
 191   ArrayKlass* volatile _array_klasses;
 192   // Constant pool for this class.
 193   ConstantPool* _constants;
 194   // The InnerClasses attribute and EnclosingMethod attribute. The
 195   // _inner_classes is an array of shorts. If the class has InnerClasses
 196   // attribute, then the _inner_classes array begins with 4-tuples of shorts
 197   // [inner_class_info_index, outer_class_info_index,
 198   // inner_name_index, inner_class_access_flags] for the InnerClasses
 199   // attribute. If the EnclosingMethod attribute exists, it occupies the
 200   // last two shorts [class_index, method_index] of the array. If only
 201   // the InnerClasses attribute exists, the _inner_classes array length is
 202   // number_of_inner_classes * 4. If the class has both InnerClasses
 203   // and EnclosingMethod attributes the _inner_classes array length is
 204   // number_of_inner_classes * 4 + enclosing_method_attribute_size.
 205   Array<jushort>* _inner_classes;
 206 
 207   // The NestMembers attribute. An array of shorts, where each is a
 208   // class info index for the class that is a nest member. This data
 209   // has not been validated.
 210   Array<jushort>* _nest_members;
 211 

 290   // Int array containing the original order of method in the class file (for JVMTI).
 291   Array<int>*     _method_ordering;
 292   // Int array containing the vtable_indices for default_methods
 293   // offset matches _default_methods offset
 294   Array<int>*     _default_vtable_indices;
 295 
 296   // Instance and static variable information, starts with 6-tuples of shorts
 297   // [access, name index, sig index, initval index, low_offset, high_offset]
 298   // for all fields, followed by the generic signature data at the end of
 299   // the array. Only fields with generic signature attributes have the generic
 300   // signature data set in the array. The fields array looks like following:
 301   //
 302   // f1: [access, name index, sig index, initial value index, low_offset, high_offset]
 303   // f2: [access, name index, sig index, initial value index, low_offset, high_offset]
 304   //      ...
 305   // fn: [access, name index, sig index, initial value index, low_offset, high_offset]
 306   //     [generic signature index]
 307   //     [generic signature index]
 308   //     ...
 309   Array<u2>*      _fields;
 310   const Klass**   _inline_type_field_klasses; // For "inline class" fields, NULL if none present
 311   Array<u2>* _preload_classes;
 312   const InlineKlassFixedBlock* _adr_inlineklass_fixed_block;
 313 
 314   // embedded Java vtable follows here
 315   // embedded Java itables follows here
 316   // embedded static fields follows here
 317   // embedded nonstatic oop-map blocks follows here
 318   // embedded implementor of this interface follows here
 319   //   The embedded implementor only exists if the current klass is an
 320   //   interface. The possible values of the implementor fall into following
 321   //   three cases:
 322   //     NULL: no implementor.
 323   //     A Klass* that's not itself: one implementor.
 324   //     Itself: more than one implementors.
 325   //
 326 
 327   friend class SystemDictionary;
 328 
 329   static bool _disable_method_binary_search;
 330 
 331   // Controls finalizer registration
 332   static bool _finalization_enabled;

 347   bool is_shared_unregistered_class() const { return _misc_status.is_shared_unregistered_class(); }
 348 
 349   // Check if the class can be shared in CDS
 350   bool is_shareable() const;
 351 
 352   bool shared_loading_failed() const { return _misc_status.shared_loading_failed(); }
 353 
 354   void set_shared_loading_failed() { _misc_status.set_shared_loading_failed(true); }
 355 
 356 #if INCLUDE_CDS
 357   void set_shared_class_loader_type(s2 loader_type) { _misc_status.set_shared_class_loader_type(loader_type); }
 358   void assign_class_loader_type() { _misc_status.assign_class_loader_type(_class_loader_data); }
 359 #endif
 360 
 361   bool has_nonstatic_fields() const        { return _misc_status.has_nonstatic_fields(); }
 362   void set_has_nonstatic_fields(bool b)    { _misc_status.set_has_nonstatic_fields(b); }
 363 
 364   bool has_localvariable_table() const     { return _misc_status.has_localvariable_table(); }
 365   void set_has_localvariable_table(bool b) { _misc_status.set_has_localvariable_table(b); }
 366 
 367   bool has_inline_type_fields() const { return _misc_status.has_inline_type_fields(); }
 368   void set_has_inline_type_fields()   { _misc_status.set_has_inline_type_fields(true); }
 369 
 370   bool is_empty_inline_type() const   { return _misc_status.is_empty_inline_type(); }
 371   void set_is_empty_inline_type()     { _misc_status.set_is_empty_inline_type(true); }
 372 
 373   // Note:  The naturally_atomic property only applies to
 374   // inline classes; it is never true on identity classes.
 375   // The bit is placed on instanceKlass for convenience.
 376 
 377   // Query if h/w provides atomic load/store for instances.
 378   bool is_naturally_atomic() const  { return _misc_status.is_naturally_atomic(); }
 379   void set_is_naturally_atomic()    { _misc_status.set_is_naturally_atomic(true); }
 380 
 381   // Query if this class implements jl.NonTearable or was
 382   // mentioned in the JVM option ForceNonTearable.
 383   // This bit can occur anywhere, but is only significant
 384   // for inline classes *and* their super types.
 385   // It inherits from supers along with NonTearable.
 386   bool is_declared_atomic() const { return _misc_status.is_declared_atomic(); }
 387   void set_is_declared_atomic()   { _misc_status.set_is_declared_atomic(true); }
 388 
 389   bool carries_value_modifier() const { return _misc_status.carries_value_modifier(); }
 390   void set_carries_value_modifier()   { _misc_status.set_carries_value_modifier(true); }
 391 
 392   bool carries_identity_modifier() const  { return _misc_status.carries_identity_modifier(); }
 393   void set_carries_identity_modifier()    { _misc_status.set_carries_identity_modifier(true); }
 394 
 395   // field sizes
 396   int nonstatic_field_size() const         { return _nonstatic_field_size; }
 397   void set_nonstatic_field_size(int size)  { _nonstatic_field_size = size; }
 398 
 399   int static_field_size() const            { return _static_field_size; }
 400   void set_static_field_size(int size)     { _static_field_size = size; }
 401 
 402   int static_oop_field_count() const       { return (int)_static_oop_field_count; }
 403   void set_static_oop_field_count(u2 size) { _static_oop_field_count = size; }
 404 
 405   // Java itable
 406   int  itable_length() const               { return _itable_len; }
 407   void set_itable_length(int len)          { _itable_len = len; }
 408 
 409   // array klasses
 410   ArrayKlass* array_klasses() const     { return _array_klasses; }
 411   inline ArrayKlass* array_klasses_acquire() const; // load with acquire semantics
 412   inline void release_set_array_klasses(ArrayKlass* k); // store with release semantics
 413 
 414   // methods
 415   Array<Method*>* methods() const          { return _methods; }
 416   void set_methods(Array<Method*>* a)      { _methods = a; }
 417   Method* method_with_idnum(int idnum);
 418   Method* method_with_orig_idnum(int idnum);
 419   Method* method_with_orig_idnum(int idnum, int version);
 420 
 421   // method ordering
 422   Array<int>* method_ordering() const     { return _method_ordering; }
 423   void set_method_ordering(Array<int>* m) { _method_ordering = m; }
 424   void copy_method_ordering(const intArray* m, TRAPS);
 425 
 426   // default_methods
 427   Array<Method*>* default_methods() const  { return _default_methods; }
 428   void set_default_methods(Array<Method*>* a) { _default_methods = a; }
 429 
 430   // default method vtable_indices
 431   Array<int>* default_vtable_indices() const { return _default_vtable_indices; }
 432   void set_default_vtable_indices(Array<int>* v) { _default_vtable_indices = v; }

 436   Array<InstanceKlass*>* local_interfaces() const          { return _local_interfaces; }
 437   void set_local_interfaces(Array<InstanceKlass*>* a)      {
 438     guarantee(_local_interfaces == NULL || a == NULL, "Just checking");
 439     _local_interfaces = a; }
 440 
 441   Array<InstanceKlass*>* transitive_interfaces() const     { return _transitive_interfaces; }
 442   void set_transitive_interfaces(Array<InstanceKlass*>* a) {
 443     guarantee(_transitive_interfaces == NULL || a == NULL, "Just checking");
 444     _transitive_interfaces = a;
 445   }
 446 
 447  private:
 448   friend class fieldDescriptor;
 449   FieldInfo* field(int index) const { return FieldInfo::from_field_array(_fields, index); }
 450 
 451  public:
 452   int     field_offset      (int index) const { return field(index)->offset(); }
 453   int     field_access_flags(int index) const { return field(index)->access_flags(); }
 454   Symbol* field_name        (int index) const { return field(index)->name(constants()); }
 455   Symbol* field_signature   (int index) const { return field(index)->signature(constants()); }
 456   bool    field_is_inlined(int index) const { return field(index)->is_inlined(); }
 457   bool    field_is_null_free_inline_type(int index) const;
 458 
 459   // Number of Java declared fields
 460   int java_fields_count() const           { return (int)_java_fields_count; }
 461 
 462   Array<u2>* fields() const            { return _fields; }
 463   void set_fields(Array<u2>* f, u2 java_fields_count) {
 464     guarantee(_fields == NULL || f == NULL, "Just checking");
 465     _fields = f;
 466     _java_fields_count = java_fields_count;
 467   }
 468 
 469   Array<u2>* preload_classes() const { return _preload_classes; }
 470   void set_preload_classes(Array<u2>* c) { _preload_classes = c; }
 471 
 472   // inner classes
 473   Array<u2>* inner_classes() const       { return _inner_classes; }
 474   void set_inner_classes(Array<u2>* f)   { _inner_classes = f; }
 475 
 476   // nest members
 477   Array<u2>* nest_members() const     { return _nest_members; }
 478   void set_nest_members(Array<u2>* m) { _nest_members = m; }
 479 
 480   // nest-host index
 481   jushort nest_host_index() const { return _nest_host_index; }
 482   void set_nest_host_index(u2 i)  { _nest_host_index = i; }
 483   // dynamic nest member support
 484   void set_nest_host(InstanceKlass* host);
 485 
 486   // record components
 487   Array<RecordComponent*>* record_components() const { return _record_components; }
 488   void set_record_components(Array<RecordComponent*>* record_components) {
 489     _record_components = record_components;
 490   }
 491   bool is_record() const;

 583     }
 584     ~LockLinkState() {
 585       if (!_ik->is_linked()) {
 586         // Reset to loaded if linking failed.
 587         _ik->set_initialization_state_and_notify(loaded, _current);
 588       }
 589     }
 590   };
 591 
 592   // is this a sealed class
 593   bool is_sealed() const;
 594 
 595   // defineClass specified verification
 596   bool should_verify_class() const         { return _misc_status.should_verify_class(); }
 597   void set_should_verify_class(bool value) { _misc_status.set_should_verify_class(value); }
 598 
 599   // marking
 600   bool is_marked_dependent() const         { return _is_marked_dependent; }
 601   void set_is_marked_dependent(bool value) { _is_marked_dependent = value; }
 602 
 603   static ByteSize kind_offset() { return in_ByteSize(offset_of(InstanceKlass, _kind)); }
 604   static ByteSize misc_status_offset() { return in_ByteSize(offset_of(InstanceKlass, _misc_status)); }
 605 
 606   // initialization (virtuals from Klass)
 607   bool should_be_initialized() const;  // means that initialize should be called
 608   void initialize(TRAPS);
 609   void link_class(TRAPS);
 610   bool link_class_or_fail(TRAPS); // returns false on failure
 611   void rewrite_class(TRAPS);
 612   void link_methods(TRAPS);
 613   Method* class_initializer() const;
 614 
 615   // reference type
 616   ReferenceType reference_type() const     { return (ReferenceType)_reference_type; }
 617 
 618   // this class cp index
 619   u2 this_class_index() const             { return _this_class_index; }
 620   void set_this_class_index(u2 index)     { _this_class_index = index; }
 621 
 622   static ByteSize reference_type_offset() { return in_ByteSize(offset_of(InstanceKlass, _reference_type)); }
 623 
 624   // find local field, returns true if found
 625   bool find_local_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const;

 928 
 929   // On-stack replacement support
 930   nmethod* osr_nmethods_head() const         { return _osr_nmethods_head; };
 931   void set_osr_nmethods_head(nmethod* h)     { _osr_nmethods_head = h; };
 932   void add_osr_nmethod(nmethod* n);
 933   bool remove_osr_nmethod(nmethod* n);
 934   int mark_osr_nmethods(const Method* m);
 935   nmethod* lookup_osr_nmethod(const Method* m, int bci, int level, bool match_level) const;
 936 
 937 #if INCLUDE_JVMTI
 938   // Breakpoint support (see methods on Method* for details)
 939   BreakpointInfo* breakpoints() const       { return _breakpoints; };
 940   void set_breakpoints(BreakpointInfo* bps) { _breakpoints = bps; };
 941 #endif
 942 
 943   // support for stub routines
 944   static ByteSize init_state_offset()  { return in_ByteSize(offset_of(InstanceKlass, _init_state)); }
 945   JFR_ONLY(DEFINE_KLASS_TRACE_ID_OFFSET;)
 946   static ByteSize init_thread_offset() { return in_ByteSize(offset_of(InstanceKlass, _init_thread)); }
 947 
 948   static ByteSize inline_type_field_klasses_offset() { return in_ByteSize(offset_of(InstanceKlass, _inline_type_field_klasses)); }
 949   static ByteSize adr_inlineklass_fixed_block_offset() { return in_ByteSize(offset_of(InstanceKlass, _adr_inlineklass_fixed_block)); }
 950 
 951   // subclass/subinterface checks
 952   bool implements_interface(Klass* k) const;
 953   bool is_same_or_direct_interface(Klass* k) const;
 954 
 955 #ifdef ASSERT
 956   // check whether this class or one of its superclasses was redefined
 957   bool has_redefined_this_or_super() const;
 958 #endif
 959 
 960   // Access to the implementor of an interface.
 961   InstanceKlass* implementor() const;
 962   void set_implementor(InstanceKlass* ik);
 963   int  nof_implementors() const;
 964   void add_implementor(InstanceKlass* ik);  // ik is a new class that implements this interface
 965   void init_implementor();           // initialize
 966 
 967   // link this class into the implementors list of every interface it implements
 968   void process_interfaces();
 969 
 970   // virtual operations from Klass

 986 
 987   static InstanceKlass* cast(Klass* k) {
 988     return const_cast<InstanceKlass*>(cast(const_cast<const Klass*>(k)));
 989   }
 990 
 991   static const InstanceKlass* cast(const Klass* k) {
 992     assert(k != NULL, "k should not be null");
 993     assert(k->is_instance_klass(), "cast to InstanceKlass");
 994     return static_cast<const InstanceKlass*>(k);
 995   }
 996 
 997   virtual InstanceKlass* java_super() const {
 998     return (super() == NULL) ? NULL : cast(super());
 999   }
1000 
1001   // Sizing (in words)
1002   static int header_size()            { return sizeof(InstanceKlass)/wordSize; }
1003 
1004   static int size(int vtable_length, int itable_length,
1005                   int nonstatic_oop_map_size,
1006                   bool is_interface,
1007                   int java_fields, bool is_inline_type) {
1008     return align_metadata_size(header_size() +
1009            vtable_length +
1010            itable_length +
1011            nonstatic_oop_map_size +
1012            (is_interface ? (int)sizeof(Klass*)/wordSize : 0) +
1013            (java_fields * (int)sizeof(Klass*)/wordSize) +
1014            (is_inline_type ? (int)sizeof(InlineKlassFixedBlock) : 0));
1015   }
1016 
1017   int size() const                    { return size(vtable_length(),
1018                                                itable_length(),
1019                                                nonstatic_oop_map_size(),
1020                                                is_interface(),
1021                                                has_inline_type_fields() ? java_fields_count() : 0,
1022                                                is_inline_klass());
1023   }
1024 
1025 
1026   inline intptr_t* start_of_itable() const;
1027   inline intptr_t* end_of_itable() const;
1028   inline int itable_offset_in_words() const;
1029   inline oop static_field_base_raw();
1030   bool bounds_check(address addr, bool edge_ok = false, intptr_t size_in_bytes = -1) const PRODUCT_RETURN0;
1031 
1032   inline OopMapBlock* start_of_nonstatic_oop_maps() const;
1033   inline Klass** end_of_nonstatic_oop_maps() const;
1034 
1035   inline InstanceKlass* volatile* adr_implementor() const;
1036 
1037   inline address adr_inline_type_field_klasses() const;
1038   inline Klass* get_inline_type_field_klass(int idx) const;
1039   inline Klass* get_inline_type_field_klass_or_null(int idx) const;
1040   inline void set_inline_type_field_klass(int idx, Klass* k);
1041   inline void reset_inline_type_field_klass(int idx);
1042 
1043   // Use this to return the size of an instance in heap words:
1044   virtual int size_helper() const {
1045     return layout_helper_to_size_helper(layout_helper());
1046   }
1047 
1048   // This bit is initialized in classFileParser.cpp.
1049   // It is false under any of the following conditions:
1050   //  - the class is abstract (including any interface)
1051   //  - the class has a finalizer (if !RegisterFinalizersAtInit)
1052   //  - the class size is larger than FastAllocateSizeLimit
1053   //  - the class is java/lang/Class, which cannot be allocated directly
1054   bool can_be_fastpath_allocated() const {
1055     return !layout_helper_needs_slow_path(layout_helper());
1056   }
1057 
1058   // Java itable
1059   klassItable itable() const;        // return klassItable wrapper
1060   Method* method_at_itable(InstanceKlass* holder, int index, TRAPS);
1061   Method* method_at_itable_or_null(InstanceKlass* holder, int index, bool& itable_entry_found);
1062   int vtable_index_of_interface_method(Method* method);
1063 
1064 #if INCLUDE_JVMTI

1078   static void deallocate_methods(ClassLoaderData* loader_data,
1079                                  Array<Method*>* methods);
1080   void static deallocate_interfaces(ClassLoaderData* loader_data,
1081                                     const Klass* super_klass,
1082                                     Array<InstanceKlass*>* local_interfaces,
1083                                     Array<InstanceKlass*>* transitive_interfaces);
1084   void static deallocate_record_components(ClassLoaderData* loader_data,
1085                                            Array<RecordComponent*>* record_component);
1086 
1087   // The constant pool is on stack if any of the methods are executing or
1088   // referenced by handles.
1089   bool on_stack() const { return _constants->on_stack(); }
1090 
1091   // callbacks for actions during class unloading
1092   static void unload_class(InstanceKlass* ik);
1093 
1094   virtual void release_C_heap_structures(bool release_sub_metadata = true);
1095 
1096   // Naming
1097   const char* signature_name() const;
1098   const char* signature_name_of_carrier(char c) const;
1099 
1100   // Oop fields (and metadata) iterators
1101   //
1102   // The InstanceKlass iterators also visits the Object's klass.
1103 
1104   // Forward iteration
1105  public:
1106   // Iterate over all oop fields in the oop maps.
1107   template <typename T, class OopClosureType>
1108   inline void oop_oop_iterate_oop_maps(oop obj, OopClosureType* closure);
1109 
1110   // Iterate over all oop fields and metadata.
1111   template <typename T, class OopClosureType>
1112   inline void oop_oop_iterate(oop obj, OopClosureType* closure);
1113 
1114   // Iterate over all oop fields in one oop map.
1115   template <typename T, class OopClosureType>
1116   inline void oop_oop_iterate_oop_map(OopMapBlock* map, oop obj, OopClosureType* closure);
1117 
1118 

1200   static Method* find_method_impl(const Array<Method*>* methods,
1201                                   const Symbol* name,
1202                                   const Symbol* signature,
1203                                   OverpassLookupMode overpass_mode,
1204                                   StaticLookupMode static_mode,
1205                                   PrivateLookupMode private_mode);
1206 
1207 #if INCLUDE_JVMTI
1208   // RedefineClasses support
1209   void link_previous_versions(InstanceKlass* pv) { _previous_versions = pv; }
1210   void mark_newly_obsolete_methods(Array<Method*>* old_methods, int emcp_method_count);
1211 #endif
1212   // log class name to classlist
1213   void log_to_classlist() const;
1214 public:
1215 
1216 #if INCLUDE_CDS
1217   // CDS support - remove and restore oops from metadata. Oops are not shared.
1218   virtual void remove_unshareable_info();
1219   virtual void remove_java_mirror();
1220   virtual void restore_unshareable_info(ClassLoaderData* loader_data, Handle protection_domain, PackageEntry* pkg_entry, TRAPS);
1221   void init_shared_package_entry();
1222   bool can_be_verified_at_dumptime() const;
1223 #endif
1224 
1225   jint compute_modifier_flags() const;
1226 
1227 public:
1228   // JVMTI support
1229   jint jvmti_class_status() const;
1230 
1231   virtual void metaspace_pointers_do(MetaspaceClosure* iter);
1232 
1233  public:
1234   // Printing
1235   void print_on(outputStream* st) const;
1236   void print_value_on(outputStream* st) const;
1237 
1238   void oop_print_value_on(oop obj, outputStream* st);
1239 
1240   void oop_print_on      (oop obj, outputStream* st);
< prev index next >