47 private: 48 jobject _loader; 49 jobject _protection_domain; 50 51 instanceKlass::ClassState _init_state; // state of class 52 bool _is_shared; 53 bool _has_finalizer; 54 bool _has_subklass; 55 bool _has_nonstatic_fields; 56 57 ciFlags _flags; 58 jint _nonstatic_field_size; 59 jint _nonstatic_oop_map_size; 60 61 // Lazy fields get filled in only upon request. 62 ciInstanceKlass* _super; 63 ciInstance* _java_mirror; 64 65 ciConstantPoolCache* _field_cache; // cached map index->field 66 GrowableArray<ciField*>* _nonstatic_fields; 67 68 enum { implementors_limit = instanceKlass::implementors_limit }; 69 ciInstanceKlass* _implementors[implementors_limit]; 70 jint _nof_implementors; 71 72 GrowableArray<ciField*>* _non_static_fields; 73 74 protected: 75 ciInstanceKlass(KlassHandle h_k); 76 ciInstanceKlass(ciSymbol* name, jobject loader, jobject protection_domain); 77 78 instanceKlass* get_instanceKlass() const { 79 return (instanceKlass*)get_Klass(); 80 } 81 82 oop loader(); 83 jobject loader_handle(); 84 85 oop protection_domain(); 86 jobject protection_domain_handle(); 87 88 const char* type_string() { return "ciInstanceKlass"; } 89 90 bool is_in_package_impl(const char* packagename, int len); 91 92 void print_impl(outputStream* st); 93 94 ciConstantPoolCache* field_cache(); 95 96 bool is_shared() { return _is_shared; } 97 98 void compute_shared_init_state(); 99 bool compute_shared_has_subklass(); 100 int compute_shared_nof_implementors(); 101 int compute_nonstatic_fields(); 102 GrowableArray<ciField*>* compute_nonstatic_fields_impl(GrowableArray<ciField*>* super_fields); 103 104 // Update the init_state for shared klasses 105 void update_if_shared(instanceKlass::ClassState expected) { 106 if (_is_shared && _init_state != expected) { 107 if (is_loaded()) compute_shared_init_state(); 108 } 109 } 110 111 public: 112 // Has this klass been initialized? 113 bool is_initialized() { 114 update_if_shared(instanceKlass::fully_initialized); 115 return _init_state == instanceKlass::fully_initialized; 116 } 117 // Is this klass being initialized? 118 bool is_being_initialized() { 119 update_if_shared(instanceKlass::being_initialized); 120 return _init_state == instanceKlass::being_initialized; 121 } 122 // Has this klass been linked? 131 return _flags; 132 } 133 bool has_finalizer() { 134 assert(is_loaded(), "must be loaded"); 135 return _has_finalizer; } 136 bool has_subklass() { 137 assert(is_loaded(), "must be loaded"); 138 if (_is_shared && !_has_subklass) { 139 if (flags().is_final()) { 140 return false; 141 } else { 142 return compute_shared_has_subklass(); 143 } 144 } 145 return _has_subklass; 146 } 147 jint size_helper() { 148 return (Klass::layout_helper_size_in_bytes(layout_helper()) 149 >> LogHeapWordSize); 150 } 151 jint nonstatic_field_size() { 152 assert(is_loaded(), "must be loaded"); 153 return _nonstatic_field_size; } 154 jint has_nonstatic_fields() { 155 assert(is_loaded(), "must be loaded"); 156 return _has_nonstatic_fields; } 157 jint nonstatic_oop_map_size() { 158 assert(is_loaded(), "must be loaded"); 159 return _nonstatic_oop_map_size; } 160 ciInstanceKlass* super(); 161 jint nof_implementors() { 162 assert(is_loaded(), "must be loaded"); 163 if (_is_shared) return compute_shared_nof_implementors(); 164 return _nof_implementors; 165 } 166 167 ciInstanceKlass* get_canonical_holder(int offset); 168 ciField* get_field_by_offset(int field_offset, bool is_static); 169 ciField* get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static); 170 171 GrowableArray<ciField*>* non_static_fields(); 172 173 // total number of nonstatic fields (including inherited): 174 int nof_nonstatic_fields() { 175 if (_nonstatic_fields == NULL) 176 return compute_nonstatic_fields(); 177 else 178 return _nonstatic_fields->length(); 179 } 180 // nth nonstatic field (presented by ascending address) 181 ciField* nonstatic_field_at(int i) { 182 assert(_nonstatic_fields != NULL, ""); 183 return _nonstatic_fields->at(i); 184 } 185 186 ciInstanceKlass* unique_concrete_subklass(); 187 bool has_finalizable_subclass(); 188 189 bool contains_field_offset(int offset) { 190 return instanceOopDesc::contains_field_offset(offset, nonstatic_field_size()); 191 } 192 193 // Get the instance of java.lang.Class corresponding to 194 // this klass. This instance is used for locking of 195 // synchronized static methods of this klass. 196 ciInstance* java_mirror(); 197 198 // Java access flags 199 bool is_public () { return flags().is_public(); } 200 bool is_final () { return flags().is_final(); } 201 bool is_super () { return flags().is_super(); } 202 bool is_interface () { return flags().is_interface(); } 203 bool is_abstract () { return flags().is_abstract(); } 204 205 ciMethod* find_method(ciSymbol* name, ciSymbol* signature); 206 // Note: To find a method from name and type strings, use ciSymbol::make, 207 // but consider adding to vmSymbols.hpp instead. 208 209 bool is_leaf_type(); 210 ciInstanceKlass* implementor(int n); | 47 private: 48 jobject _loader; 49 jobject _protection_domain; 50 51 instanceKlass::ClassState _init_state; // state of class 52 bool _is_shared; 53 bool _has_finalizer; 54 bool _has_subklass; 55 bool _has_nonstatic_fields; 56 57 ciFlags _flags; 58 jint _nonstatic_field_size; 59 jint _nonstatic_oop_map_size; 60 61 // Lazy fields get filled in only upon request. 62 ciInstanceKlass* _super; 63 ciInstance* _java_mirror; 64 65 ciConstantPoolCache* _field_cache; // cached map index->field 66 GrowableArray<ciField*>* _nonstatic_fields; 67 GrowableArray<ciField*>* _static_fields; 68 69 enum { implementors_limit = instanceKlass::implementors_limit }; 70 ciInstanceKlass* _implementors[implementors_limit]; 71 jint _nof_implementors; 72 73 protected: 74 ciInstanceKlass(KlassHandle h_k); 75 ciInstanceKlass(ciSymbol* name, jobject loader, jobject protection_domain); 76 77 instanceKlass* get_instanceKlass() const { 78 return (instanceKlass*)get_Klass(); 79 } 80 81 oop loader(); 82 jobject loader_handle(); 83 84 oop protection_domain(); 85 jobject protection_domain_handle(); 86 87 const char* type_string() { return "ciInstanceKlass"; } 88 89 bool is_in_package_impl(const char* packagename, int len); 90 91 void print_impl(outputStream* st); 92 93 ciConstantPoolCache* field_cache(); 94 95 bool is_shared() { return _is_shared; } 96 97 void compute_shared_init_state(); 98 bool compute_shared_has_subklass(); 99 int compute_shared_nof_implementors(); 100 int compute_fields(); 101 void compute_fields_impl(GrowableArray<ciField*>* super_fields); 102 103 // Update the init_state for shared klasses 104 void update_if_shared(instanceKlass::ClassState expected) { 105 if (_is_shared && _init_state != expected) { 106 if (is_loaded()) compute_shared_init_state(); 107 } 108 } 109 110 public: 111 // Has this klass been initialized? 112 bool is_initialized() { 113 update_if_shared(instanceKlass::fully_initialized); 114 return _init_state == instanceKlass::fully_initialized; 115 } 116 // Is this klass being initialized? 117 bool is_being_initialized() { 118 update_if_shared(instanceKlass::being_initialized); 119 return _init_state == instanceKlass::being_initialized; 120 } 121 // Has this klass been linked? 130 return _flags; 131 } 132 bool has_finalizer() { 133 assert(is_loaded(), "must be loaded"); 134 return _has_finalizer; } 135 bool has_subklass() { 136 assert(is_loaded(), "must be loaded"); 137 if (_is_shared && !_has_subklass) { 138 if (flags().is_final()) { 139 return false; 140 } else { 141 return compute_shared_has_subklass(); 142 } 143 } 144 return _has_subklass; 145 } 146 jint size_helper() { 147 return (Klass::layout_helper_size_in_bytes(layout_helper()) 148 >> LogHeapWordSize); 149 } 150 jint has_nonstatic_fields() { 151 assert(is_loaded(), "must be loaded"); 152 return _has_nonstatic_fields; } 153 ciInstanceKlass* super(); 154 jint nof_implementors() { 155 assert(is_loaded(), "must be loaded"); 156 if (_is_shared) return compute_shared_nof_implementors(); 157 return _nof_implementors; 158 } 159 160 ciInstanceKlass* get_canonical_holder(int offset); 161 ciField* get_field_by_offset(int field_offset, bool is_static); 162 ciField* get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static); 163 164 // All nonstatic fields, including inherited ones 165 GrowableArray<ciField*>* nonstatic_fields() { 166 if (_nonstatic_fields == NULL) { 167 compute_fields(); 168 } 169 return _nonstatic_fields; 170 } 171 // Static fields declared in this class 172 GrowableArray<ciField*>* static_fields() { 173 if (_static_fields == NULL) { 174 compute_fields(); 175 } 176 return _static_fields; 177 } 178 179 ciInstanceKlass* unique_concrete_subklass(); 180 bool has_finalizable_subclass(); 181 182 bool contains_field_offset(int offset) { 183 return instanceOopDesc::contains_field_offset(offset, _nonstatic_field_size); 184 } 185 186 // Get the instance of java.lang.Class corresponding to 187 // this klass. This instance is used for locking of 188 // synchronized static methods of this klass. 189 ciInstance* java_mirror(); 190 191 // Java access flags 192 bool is_public () { return flags().is_public(); } 193 bool is_final () { return flags().is_final(); } 194 bool is_super () { return flags().is_super(); } 195 bool is_interface () { return flags().is_interface(); } 196 bool is_abstract () { return flags().is_abstract(); } 197 198 ciMethod* find_method(ciSymbol* name, ciSymbol* signature); 199 // Note: To find a method from name and type strings, use ciSymbol::make, 200 // but consider adding to vmSymbols.hpp instead. 201 202 bool is_leaf_type(); 203 ciInstanceKlass* implementor(int n); |