50
51 jobject _loader;
52
53 InstanceKlass::ClassState _init_state; // state of class
54 bool _is_shared;
55 bool _has_finalizer;
56 SubklassValue _has_subklass;
57 bool _has_nonstatic_fields;
58 bool _has_nonstatic_concrete_methods;
59 bool _is_hidden;
60 bool _is_record;
61 bool _has_trusted_loader;
62
63 ciFlags _flags;
64
65 // Lazy fields get filled in only upon request.
66 ciInstanceKlass* _super;
67 ciInstance* _java_mirror;
68
69 ciConstantPoolCache* _field_cache; // cached map index->field
70 GrowableArray<ciField*>* _nonstatic_fields; // ordered by JavaFieldStream
71 int _has_injected_fields; // any non static injected fields? lazily initialized.
72
73 // The possible values of the _implementor fall into following three cases:
74 // null: no implementor.
75 // A ciInstanceKlass that's not itself: one implementor.
76 // Itself: more than one implementor.
77 ciInstanceKlass* _implementor;
78 GrowableArray<ciInstanceKlass*>* _transitive_interfaces;
79
80 void compute_injected_fields();
81 bool compute_injected_fields_helper();
82 void compute_transitive_interfaces();
83
84 protected:
85 ciInstanceKlass(Klass* k);
86 ciInstanceKlass(ciSymbol* name, jobject loader);
87
88 InstanceKlass* get_instanceKlass() const {
89 return InstanceKlass::cast(get_Klass());
90 }
91
92 oop loader();
93 jobject loader_handle();
94
95 const char* type_string() { return "ciInstanceKlass"; }
96
97 bool is_in_package_impl(const char* packagename, int len);
98
99 void print_impl(outputStream* st);
100
101 ciConstantPoolCache* field_cache();
102
103 bool is_shared() { return _is_shared; }
104
105 void compute_shared_init_state();
106 bool compute_shared_has_subklass();
107 int compute_nonstatic_fields();
108 GrowableArray<ciField*>* compute_nonstatic_fields_impl(GrowableArray<ciField*>* super_fields);
109 bool compute_has_trusted_loader();
110
111 // Update the init_state for shared klasses
112 void update_if_shared(InstanceKlass::ClassState expected) {
113 if (_is_shared && _init_state != expected) {
114 if (is_loaded()) compute_shared_init_state();
115 }
116 }
117
118 public:
119 // Has this klass been initialized?
120 bool is_initialized() {
121 update_if_shared(InstanceKlass::fully_initialized);
122 return _init_state == InstanceKlass::fully_initialized;
123 }
124 bool is_not_initialized() {
125 update_if_shared(InstanceKlass::fully_initialized);
126 return _init_state < InstanceKlass::being_initialized;
127 }
128 // Is this klass being initialized?
186 } else {
187 return 2;
188 }
189 }
190 bool has_nonstatic_concrete_methods() {
191 assert(is_loaded(), "must be loaded");
192 return _has_nonstatic_concrete_methods;
193 }
194
195 bool is_hidden() const {
196 return _is_hidden;
197 }
198
199 bool is_record() const {
200 return _is_record;
201 }
202
203 ciInstanceKlass* get_canonical_holder(int offset);
204 ciField* get_field_by_offset(int field_offset, bool is_static);
205 ciField* get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static);
206
207 // total number of nonstatic fields (including inherited):
208 int nof_nonstatic_fields() {
209 if (_nonstatic_fields == nullptr)
210 return compute_nonstatic_fields();
211 else
212 return _nonstatic_fields->length();
213 }
214
215 bool has_injected_fields() {
216 if (_has_injected_fields == -1) {
217 compute_injected_fields();
218 }
219 return _has_injected_fields > 0 ? true : false;
220 }
221
222 bool has_object_fields() const;
223
224 // nth nonstatic field (presented by ascending address)
225 ciField* nonstatic_field_at(int i) {
226 assert(_nonstatic_fields != nullptr, "");
227 return _nonstatic_fields->at(i);
228 }
229
230 ciInstanceKlass* unique_concrete_subklass();
231 bool has_finalizable_subclass();
232
233 bool contains_field_offset(int offset);
234
235 // Get the instance of java.lang.Class corresponding to
236 // this klass. This instance is used for locking of
237 // synchronized static methods of this klass.
238 ciInstance* java_mirror();
239
240 // Java access flags
241 bool is_public () { return flags().is_public(); }
242 bool is_final () { return flags().is_final(); }
243 bool is_super () { return flags().is_super(); }
244 bool is_interface () { return flags().is_interface(); }
245 bool is_abstract () { return flags().is_abstract(); }
246
247 ciMethod* find_method(ciSymbol* name, ciSymbol* signature);
248 // Note: To find a method from name and type strings, use ciSymbol::make,
249 // but consider adding to vmSymbols.hpp instead.
250
251 bool is_leaf_type();
252 ciInstanceKlass* implementor();
253
254 ciInstanceKlass* unique_implementor() {
255 assert(is_loaded(), "must be loaded");
256 ciInstanceKlass* impl = implementor();
257 return (impl != this ? impl : nullptr);
258 }
259
260 // Is the defining class loader of this class the default loader?
261 bool uses_default_loader() const;
262
263 bool is_java_lang_Object() const;
264
265 BasicType box_klass_type() const;
266 bool is_box_klass() const;
267 bool is_boxed_value_offset(int offset) const;
268
269 // Is this klass in the given package?
270 bool is_in_package(const char* packagename) {
271 return is_in_package(packagename, (int) strlen(packagename));
272 }
273 bool is_in_package(const char* packagename, int len);
274
275 // What kind of ciObject is this?
276 bool is_instance_klass() const { return true; }
277
278 virtual ciKlass* exact_klass() {
279 if (is_loaded() && is_final() && !is_interface()) {
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50
51 jobject _loader;
52
53 InstanceKlass::ClassState _init_state; // state of class
54 bool _is_shared;
55 bool _has_finalizer;
56 SubklassValue _has_subklass;
57 bool _has_nonstatic_fields;
58 bool _has_nonstatic_concrete_methods;
59 bool _is_hidden;
60 bool _is_record;
61 bool _has_trusted_loader;
62
63 ciFlags _flags;
64
65 // Lazy fields get filled in only upon request.
66 ciInstanceKlass* _super;
67 ciInstance* _java_mirror;
68
69 ciConstantPoolCache* _field_cache; // cached map index->field
70 public:
71 GrowableArray<ciField*>* _nonstatic_fields; // ordered by JavaFieldStream
72 private:
73 int _has_injected_fields; // any non static injected fields? lazily initialized.
74
75 // The possible values of the _implementor fall into following three cases:
76 // null: no implementor.
77 // A ciInstanceKlass that's not itself: one implementor.
78 // Itself: more than one implementor.
79 ciInstanceKlass* _implementor;
80 GrowableArray<ciInstanceKlass*>* _transitive_interfaces;
81
82 void compute_injected_fields();
83 bool compute_injected_fields_helper();
84 void compute_transitive_interfaces();
85
86 protected:
87 ciInstanceKlass(Klass* k);
88 ciInstanceKlass(ciSymbol* name, jobject loader, BasicType bt = T_OBJECT); // for unloaded klasses
89
90 InstanceKlass* get_instanceKlass() const {
91 return InstanceKlass::cast(get_Klass());
92 }
93
94 oop loader();
95 jobject loader_handle();
96
97 const char* type_string() { return "ciInstanceKlass"; }
98
99 bool is_in_package_impl(const char* packagename, int len);
100
101 void print_impl(outputStream* st);
102
103 ciConstantPoolCache* field_cache();
104
105 bool is_shared() { return _is_shared; }
106
107 void compute_shared_init_state();
108 bool compute_shared_has_subklass();
109 virtual int compute_nonstatic_fields();
110 GrowableArray<ciField*>* compute_nonstatic_fields_impl(GrowableArray<ciField*>* super_fields, bool flatten = true);
111 bool compute_has_trusted_loader();
112
113 // Update the init_state for shared klasses
114 void update_if_shared(InstanceKlass::ClassState expected) {
115 if (_is_shared && _init_state != expected) {
116 if (is_loaded()) compute_shared_init_state();
117 }
118 }
119
120 public:
121 // Has this klass been initialized?
122 bool is_initialized() {
123 update_if_shared(InstanceKlass::fully_initialized);
124 return _init_state == InstanceKlass::fully_initialized;
125 }
126 bool is_not_initialized() {
127 update_if_shared(InstanceKlass::fully_initialized);
128 return _init_state < InstanceKlass::being_initialized;
129 }
130 // Is this klass being initialized?
188 } else {
189 return 2;
190 }
191 }
192 bool has_nonstatic_concrete_methods() {
193 assert(is_loaded(), "must be loaded");
194 return _has_nonstatic_concrete_methods;
195 }
196
197 bool is_hidden() const {
198 return _is_hidden;
199 }
200
201 bool is_record() const {
202 return _is_record;
203 }
204
205 ciInstanceKlass* get_canonical_holder(int offset);
206 ciField* get_field_by_offset(int field_offset, bool is_static);
207 ciField* get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static);
208 // get field descriptor at field_offset ignoring flattening
209 ciField* get_non_flat_field_by_offset(int field_offset);
210
211 // total number of nonstatic fields (including inherited):
212 int nof_nonstatic_fields() {
213 if (_nonstatic_fields == nullptr) {
214 return compute_nonstatic_fields();
215 } else {
216 return _nonstatic_fields->length();
217 }
218 }
219
220 bool has_injected_fields() {
221 if (_has_injected_fields == -1) {
222 compute_injected_fields();
223 }
224 return _has_injected_fields > 0 ? true : false;
225 }
226
227 bool has_object_fields() const;
228
229 // nth nonstatic field (presented by ascending address)
230 ciField* nonstatic_field_at(int i) {
231 assert(_nonstatic_fields != nullptr, "");
232 return _nonstatic_fields->at(i);
233 }
234
235 ciInstanceKlass* unique_concrete_subklass();
236 bool has_finalizable_subclass();
237
238 bool contains_field_offset(int offset);
239
240 // Get the instance of java.lang.Class corresponding to
241 // this klass. This instance is used for locking of
242 // synchronized static methods of this klass.
243 ciInstance* java_mirror();
244
245 // Java access flags
246 bool is_public () { return flags().is_public(); }
247 bool is_final () { return flags().is_final(); }
248 bool is_interface () { return flags().is_interface(); }
249 bool is_abstract () { return flags().is_abstract(); }
250 bool is_abstract_value_klass() { return is_abstract() && !flags().is_identity(); }
251
252 ciMethod* find_method(ciSymbol* name, ciSymbol* signature);
253 // Note: To find a method from name and type strings, use ciSymbol::make,
254 // but consider adding to vmSymbols.hpp instead.
255
256 bool is_leaf_type();
257 ciInstanceKlass* implementor();
258
259 ciInstanceKlass* unique_implementor() {
260 assert(is_loaded(), "must be loaded");
261 ciInstanceKlass* impl = implementor();
262 return (impl != this ? impl : nullptr);
263 }
264
265 virtual bool can_be_inline_klass(bool is_exact = false);
266
267 // Is the defining class loader of this class the default loader?
268 bool uses_default_loader() const;
269
270 bool is_java_lang_Object() const;
271
272 BasicType box_klass_type() const;
273 bool is_box_klass() const;
274 bool is_boxed_value_offset(int offset) const;
275
276 // Is this klass in the given package?
277 bool is_in_package(const char* packagename) {
278 return is_in_package(packagename, (int) strlen(packagename));
279 }
280 bool is_in_package(const char* packagename, int len);
281
282 // What kind of ciObject is this?
283 bool is_instance_klass() const { return true; }
284
285 virtual ciKlass* exact_klass() {
286 if (is_loaded() && is_final() && !is_interface()) {
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