142 OopHandle _java_mirror;
143 // Superclass
144 Klass* _super;
145 // First subclass (NULL if none); _subklass->next_sibling() is next one
146 Klass* volatile _subklass;
147 // Sibling link (or NULL); links all subklasses of a klass
148 Klass* volatile _next_sibling;
149
150 // All klasses loaded by a class loader are chained through these links
151 Klass* _next_link;
152
153 // The VM's representation of the ClassLoader used to load this class.
154 // Provide access the corresponding instance java.lang.ClassLoader.
155 ClassLoaderData* _class_loader_data;
156
157 jint _modifier_flags; // Processed access flags, for use by Class.getModifiers.
158 AccessFlags _access_flags; // Access flags. The class/interface distinction is stored here.
159
160 JFR_ONLY(DEFINE_TRACE_ID_FIELD;)
161
162 private:
163 // This is an index into FileMapHeader::_shared_path_table[], to
164 // associate this class with the JAR file where it's loaded from during
165 // dump time. If a class is not loaded from the shared archive, this field is
166 // -1.
167 jshort _shared_class_path_index;
168
169 #if INCLUDE_CDS
170 // Flags of the current shared class.
171 u2 _shared_class_flags;
172 enum {
173 _archived_lambda_proxy_is_available = 2,
174 _has_value_based_class_annotation = 4,
175 _verified_at_dump_time = 8
176 };
177 #endif
178
179 CDS_JAVA_HEAP_ONLY(int _archived_mirror_index;)
180
181 protected:
622 bool has_finalizer() const { return _access_flags.has_finalizer(); }
623 bool has_final_method() const { return _access_flags.has_final_method(); }
624 void set_has_finalizer() { _access_flags.set_has_finalizer(); }
625 void set_has_final_method() { _access_flags.set_has_final_method(); }
626 bool has_vanilla_constructor() const { return _access_flags.has_vanilla_constructor(); }
627 void set_has_vanilla_constructor() { _access_flags.set_has_vanilla_constructor(); }
628 bool has_miranda_methods () const { return access_flags().has_miranda_methods(); }
629 void set_has_miranda_methods() { _access_flags.set_has_miranda_methods(); }
630 bool is_shared() const { return access_flags().is_shared_class(); } // shadows MetaspaceObj::is_shared)()
631 void set_is_shared() { _access_flags.set_is_shared_class(); }
632 bool is_hidden() const { return access_flags().is_hidden_class(); }
633 void set_is_hidden() { _access_flags.set_is_hidden_class(); }
634 bool is_value_based() { return _access_flags.is_value_based_class(); }
635 void set_is_value_based() { _access_flags.set_is_value_based_class(); }
636
637 inline bool is_non_strong_hidden() const;
638
639 bool is_cloneable() const;
640 void set_is_cloneable();
641
642 JFR_ONLY(DEFINE_TRACE_ID_METHODS;)
643
644 virtual void metaspace_pointers_do(MetaspaceClosure* iter);
645 virtual MetaspaceObj::Type type() const { return ClassType; }
646
647 inline bool is_loader_alive() const;
648
649 void clean_subklass();
650
651 static void clean_weak_klass_links(bool unloading_occurred, bool clean_alive_klasses = true);
652 static void clean_subklass_tree() {
653 clean_weak_klass_links(/*unloading_occurred*/ true , /* clean_alive_klasses */ false);
654 }
655
656 // Return self, except for abstract classes with exactly 1
657 // implementor. Then return the 1 concrete implementation.
658 Klass *up_cast_abstract();
659
660 // klass name
661 Symbol* name() const { return _name; }
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142 OopHandle _java_mirror;
143 // Superclass
144 Klass* _super;
145 // First subclass (NULL if none); _subklass->next_sibling() is next one
146 Klass* volatile _subklass;
147 // Sibling link (or NULL); links all subklasses of a klass
148 Klass* volatile _next_sibling;
149
150 // All klasses loaded by a class loader are chained through these links
151 Klass* _next_link;
152
153 // The VM's representation of the ClassLoader used to load this class.
154 // Provide access the corresponding instance java.lang.ClassLoader.
155 ClassLoaderData* _class_loader_data;
156
157 jint _modifier_flags; // Processed access flags, for use by Class.getModifiers.
158 AccessFlags _access_flags; // Access flags. The class/interface distinction is stored here.
159
160 JFR_ONLY(DEFINE_TRACE_ID_FIELD;)
161
162 markWord _prototype_header; // Used to initialize objects' header
163
164 private:
165 // This is an index into FileMapHeader::_shared_path_table[], to
166 // associate this class with the JAR file where it's loaded from during
167 // dump time. If a class is not loaded from the shared archive, this field is
168 // -1.
169 jshort _shared_class_path_index;
170
171 #if INCLUDE_CDS
172 // Flags of the current shared class.
173 u2 _shared_class_flags;
174 enum {
175 _archived_lambda_proxy_is_available = 2,
176 _has_value_based_class_annotation = 4,
177 _verified_at_dump_time = 8
178 };
179 #endif
180
181 CDS_JAVA_HEAP_ONLY(int _archived_mirror_index;)
182
183 protected:
624 bool has_finalizer() const { return _access_flags.has_finalizer(); }
625 bool has_final_method() const { return _access_flags.has_final_method(); }
626 void set_has_finalizer() { _access_flags.set_has_finalizer(); }
627 void set_has_final_method() { _access_flags.set_has_final_method(); }
628 bool has_vanilla_constructor() const { return _access_flags.has_vanilla_constructor(); }
629 void set_has_vanilla_constructor() { _access_flags.set_has_vanilla_constructor(); }
630 bool has_miranda_methods () const { return access_flags().has_miranda_methods(); }
631 void set_has_miranda_methods() { _access_flags.set_has_miranda_methods(); }
632 bool is_shared() const { return access_flags().is_shared_class(); } // shadows MetaspaceObj::is_shared)()
633 void set_is_shared() { _access_flags.set_is_shared_class(); }
634 bool is_hidden() const { return access_flags().is_hidden_class(); }
635 void set_is_hidden() { _access_flags.set_is_hidden_class(); }
636 bool is_value_based() { return _access_flags.is_value_based_class(); }
637 void set_is_value_based() { _access_flags.set_is_value_based_class(); }
638
639 inline bool is_non_strong_hidden() const;
640
641 bool is_cloneable() const;
642 void set_is_cloneable();
643
644 markWord prototype_header() const { return _prototype_header; }
645 inline void set_prototype_header(markWord header);
646 static ByteSize prototype_header_offset() { return in_ByteSize(offset_of(Klass, _prototype_header)); }
647
648 JFR_ONLY(DEFINE_TRACE_ID_METHODS;)
649
650 virtual void metaspace_pointers_do(MetaspaceClosure* iter);
651 virtual MetaspaceObj::Type type() const { return ClassType; }
652
653 inline bool is_loader_alive() const;
654
655 void clean_subklass();
656
657 static void clean_weak_klass_links(bool unloading_occurred, bool clean_alive_klasses = true);
658 static void clean_subklass_tree() {
659 clean_weak_klass_links(/*unloading_occurred*/ true , /* clean_alive_klasses */ false);
660 }
661
662 // Return self, except for abstract classes with exactly 1
663 // implementor. Then return the 1 concrete implementation.
664 Klass *up_cast_abstract();
665
666 // klass name
667 Symbol* name() const { return _name; }
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