52 jobject _loader;
53
54 InstanceKlass::ClassState _init_state; // state of class
55 bool _is_shared;
56 bool _has_finalizer;
57 SubklassValue _has_subklass;
58 bool _has_nonstatic_fields;
59 bool _has_nonstatic_concrete_methods;
60 bool _is_hidden;
61 bool _is_record;
62 bool _trust_final_fields;
63 bool _has_trusted_loader;
64
65 ciFlags _flags;
66
67 // Lazy fields get filled in only upon request.
68 ciInstanceKlass* _super;
69 ciInstance* _java_mirror;
70
71 ciConstantPoolCache* _field_cache; // cached map index->field
72 GrowableArray<ciField*>* _nonstatic_fields; // ordered by JavaFieldStream
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 ciField* get_nonstatic_field_by_offset(int field_offset);
87
88 protected:
89 ciInstanceKlass(Klass* k);
90 ciInstanceKlass(ciSymbol* name, jobject loader);
91
92 InstanceKlass* get_instanceKlass() const {
93 return InstanceKlass::cast(get_Klass());
94 }
95
96 oop loader();
97 jobject loader_handle();
98
99 const char* type_string() { return "ciInstanceKlass"; }
100
101 bool is_in_package_impl(const char* packagename, int len);
102
103 void print_impl(outputStream* st);
104
105 ciConstantPoolCache* field_cache();
106
107 bool is_shared() { return _is_shared; }
108
109 InstanceKlass::ClassState compute_init_state();
110 bool compute_shared_has_subklass();
111 int compute_nonstatic_fields();
112 GrowableArray<ciField*>* compute_nonstatic_fields_impl(GrowableArray<ciField*>* super_fields);
113 bool compute_has_trusted_loader();
114
115 public:
116 // Has this klass been initialized?
117 bool is_initialized() {
118 InstanceKlass::ClassState state = compute_init_state();
119 return state == InstanceKlass::fully_initialized;
120 }
121 bool is_not_initialized() {
122 InstanceKlass::ClassState state = compute_init_state();
123 return state < InstanceKlass::being_initialized;
124 }
125 // Is this klass being initialized?
126 bool is_being_initialized() {
127 InstanceKlass::ClassState state = compute_init_state();
128 return state == InstanceKlass::being_initialized;
129 }
130 // Has this klass been linked?
131 bool is_linked() {
132 InstanceKlass::ClassState state = compute_init_state();
191 bool has_nonstatic_concrete_methods() {
192 assert(is_loaded(), "must be loaded");
193 return _has_nonstatic_concrete_methods;
194 }
195
196 bool is_hidden() const {
197 return _is_hidden;
198 }
199
200 bool is_record() const {
201 return _is_record;
202 }
203
204 bool trust_final_fields() const {
205 return _trust_final_fields;
206 }
207
208 ciInstanceKlass* get_canonical_holder(int offset);
209 ciField* get_field_by_offset(int field_offset, bool is_static);
210 ciField* get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static);
211 ciField* get_injected_instance_field_by_name(ciSymbol* name, ciSymbol* signature);
212 BasicType get_field_type_by_offset(int field_offset, bool is_static);
213
214 // total number of nonstatic fields (including inherited):
215 int nof_nonstatic_fields() {
216 if (_nonstatic_fields == nullptr)
217 return compute_nonstatic_fields();
218 else
219 return _nonstatic_fields->length();
220 }
221
222 bool has_injected_fields() {
223 if (_has_injected_fields == -1) {
224 compute_injected_fields();
225 }
226 return _has_injected_fields > 0 ? true : false;
227 }
228
229 bool has_object_fields() const;
230
231 // nth nonstatic field (presented by ascending address)
232 ciField* nonstatic_field_at(int i) {
233 assert(_nonstatic_fields != nullptr, "");
234 return _nonstatic_fields->at(i);
235 }
236
237 ciInstanceKlass* unique_concrete_subklass();
238 bool has_finalizable_subclass();
239
240 bool has_class_initializer();
241
242 bool contains_field_offset(int offset);
243
244 // Get the instance of java.lang.Class corresponding to
245 // this klass. This instance is used for locking of
246 // synchronized static methods of this klass.
247 ciInstance* java_mirror();
248
249 // Java access flags
250 bool is_public () { return flags().is_public(); }
251 bool is_final () { return flags().is_final(); }
252 bool is_super () { return flags().is_super(); }
253 bool is_interface () { return flags().is_interface(); }
254 bool is_abstract () { return flags().is_abstract(); }
255
256 ciMethod* find_method(ciSymbol* name, ciSymbol* signature);
257 // Note: To find a method from name and type strings, use ciSymbol::make,
258 // but consider adding to vmSymbols.hpp instead.
259
260 bool is_leaf_type();
261 ciInstanceKlass* implementor();
262
263 ciInstanceKlass* unique_implementor() {
264 assert(is_loaded(), "must be loaded");
265 assert(is_interface(), "must be");
266 ciInstanceKlass* impl = implementor();
267 return (impl != this ? impl : nullptr);
268 }
269
270 // Is the defining class loader of this class the default loader?
271 bool uses_default_loader() const;
272
273 bool is_java_lang_Object() const;
274
275 BasicType box_klass_type() const;
276 bool is_box_klass() const;
277 bool is_boxed_value_offset(int offset) const;
278
279 // Is this klass in the given package?
280 bool is_in_package(const char* packagename) {
281 return is_in_package(packagename, (int) strlen(packagename));
282 }
283 bool is_in_package(const char* packagename, int len);
284
285 // What kind of ciObject is this?
286 bool is_instance_klass() const { return true; }
287
288 virtual ciKlass* exact_klass() {
289 if (is_loaded() && is_final() && !is_interface()) {
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52 jobject _loader;
53
54 InstanceKlass::ClassState _init_state; // state of class
55 bool _is_shared;
56 bool _has_finalizer;
57 SubklassValue _has_subklass;
58 bool _has_nonstatic_fields;
59 bool _has_nonstatic_concrete_methods;
60 bool _is_hidden;
61 bool _is_record;
62 bool _trust_final_fields;
63 bool _has_trusted_loader;
64
65 ciFlags _flags;
66
67 // Lazy fields get filled in only upon request.
68 ciInstanceKlass* _super;
69 ciInstance* _java_mirror;
70
71 ciConstantPoolCache* _field_cache; // cached map index->field
72
73 // Fields declared in the bytecode (without nested fields in flat fields),
74 // ordered in JavaFieldStream order, with superclasses first (i.e. from lang.java.Object
75 // to most derived class).
76 const GrowableArray<ciField*>* _declared_nonstatic_fields;
77
78 // Fields laid out in memory (flat fields are expanded into their components). The ciField object
79 // for each primitive component has the holder being this ciInstanceKlass or one of its
80 // superclasses.
81 // Fields are in the same order as in _declared_nonstatic_fields, but flat fields are replaced by
82 // the list of their own fields, ordered the same way (hierarchy traversed top-down, in
83 // JavaFieldStream order).
84 const GrowableArray<ciField*>* _nonstatic_fields;
85
86 int _has_injected_fields; // any non static injected fields? lazily initialized.
87
88 // The possible values of the _implementor fall into following three cases:
89 // null: no implementor.
90 // A ciInstanceKlass that's not itself: one implementor.
91 // Itself: more than one implementor.
92 ciInstanceKlass* _implementor;
93 GrowableArray<ciInstanceKlass*>* _transitive_interfaces;
94
95 void compute_injected_fields();
96 bool compute_injected_fields_helper();
97 void compute_transitive_interfaces();
98
99 ciField* get_nonstatic_field_by_offset(int field_offset);
100
101 protected:
102 ciInstanceKlass(Klass* k);
103 ciInstanceKlass(ciSymbol* name, jobject loader, BasicType bt = T_OBJECT); // for unloaded klasses
104
105 InstanceKlass* get_instanceKlass() const {
106 return InstanceKlass::cast(get_Klass());
107 }
108
109 oop loader();
110 jobject loader_handle();
111
112 const char* type_string() { return "ciInstanceKlass"; }
113
114 bool is_in_package_impl(const char* packagename, int len);
115
116 void print_impl(outputStream* st);
117
118 ciConstantPoolCache* field_cache();
119
120 bool is_shared() { return _is_shared; }
121
122 InstanceKlass::ClassState compute_init_state();
123 bool compute_shared_has_subklass();
124 void compute_nonstatic_fields();
125 void compute_nonstatic_fields_impl(const GrowableArray<ciField*>* super_declared_fields, const GrowableArray<ciField*>* super_fields);
126 bool compute_has_trusted_loader();
127
128 public:
129 // Has this klass been initialized?
130 bool is_initialized() {
131 InstanceKlass::ClassState state = compute_init_state();
132 return state == InstanceKlass::fully_initialized;
133 }
134 bool is_not_initialized() {
135 InstanceKlass::ClassState state = compute_init_state();
136 return state < InstanceKlass::being_initialized;
137 }
138 // Is this klass being initialized?
139 bool is_being_initialized() {
140 InstanceKlass::ClassState state = compute_init_state();
141 return state == InstanceKlass::being_initialized;
142 }
143 // Has this klass been linked?
144 bool is_linked() {
145 InstanceKlass::ClassState state = compute_init_state();
204 bool has_nonstatic_concrete_methods() {
205 assert(is_loaded(), "must be loaded");
206 return _has_nonstatic_concrete_methods;
207 }
208
209 bool is_hidden() const {
210 return _is_hidden;
211 }
212
213 bool is_record() const {
214 return _is_record;
215 }
216
217 bool trust_final_fields() const {
218 return _trust_final_fields;
219 }
220
221 ciInstanceKlass* get_canonical_holder(int offset);
222 ciField* get_field_by_offset(int field_offset, bool is_static);
223 ciField* get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static);
224 // Get field descriptor at field_offset ignoring flattening
225 ciField* get_non_flat_field_by_offset(int field_offset);
226 // Get the index of the declared field that contains this offset
227 int field_index_by_offset(int offset);
228
229 // Total number of nonstatic fields (including inherited)
230 int nof_declared_nonstatic_fields() {
231 if (_declared_nonstatic_fields == nullptr) {
232 compute_nonstatic_fields();
233 }
234 return _declared_nonstatic_fields->length();
235 }
236 ciField* get_injected_instance_field_by_name(ciSymbol* name, ciSymbol* signature);
237 BasicType get_field_type_by_offset(int field_offset, bool is_static);
238
239 int nof_nonstatic_fields() {
240 if (_nonstatic_fields == nullptr) {
241 compute_nonstatic_fields();
242 }
243 return _nonstatic_fields->length();
244 }
245
246 bool has_injected_fields() {
247 if (_has_injected_fields == -1) {
248 compute_injected_fields();
249 }
250 return _has_injected_fields > 0 ? true : false;
251 }
252
253 bool has_object_fields() const;
254
255 ciField* declared_nonstatic_field_at(int i) {
256 assert(_declared_nonstatic_fields != nullptr, "should be initialized");
257 return _declared_nonstatic_fields->at(i);
258 }
259
260 ciField* nonstatic_field_at(int i) {
261 assert(_nonstatic_fields != nullptr, "");
262 return _nonstatic_fields->at(i);
263 }
264
265 ciInstanceKlass* unique_concrete_subklass();
266 bool has_finalizable_subclass();
267
268 bool has_class_initializer();
269
270 bool contains_field_offset(int offset) const;
271
272 // Get the instance of java.lang.Class corresponding to
273 // this klass. This instance is used for locking of
274 // synchronized static methods of this klass.
275 ciInstance* java_mirror();
276
277 // Java access flags
278 bool is_public () { return flags().is_public(); }
279 bool is_final () { return flags().is_final(); }
280 bool is_interface () { return flags().is_interface(); }
281 bool is_abstract () { return flags().is_abstract(); }
282 bool is_abstract_value_klass() { return is_abstract() && !flags().is_identity(); }
283
284 ciMethod* find_method(ciSymbol* name, ciSymbol* signature);
285 // Note: To find a method from name and type strings, use ciSymbol::make,
286 // but consider adding to vmSymbols.hpp instead.
287
288 bool is_leaf_type();
289 ciInstanceKlass* implementor();
290
291 ciInstanceKlass* unique_implementor() {
292 assert(is_loaded(), "must be loaded");
293 assert(is_interface(), "must be");
294 ciInstanceKlass* impl = implementor();
295 return (impl != this ? impl : nullptr);
296 }
297
298 virtual bool can_be_inline_klass(bool is_exact = false);
299
300 // Is the defining class loader of this class the default loader?
301 bool uses_default_loader() const;
302
303 bool is_java_lang_Object() const;
304
305 BasicType box_klass_type() const;
306 bool is_box_klass() const;
307 bool is_boxed_value_offset(int offset) const;
308
309 // Is this klass in the given package?
310 bool is_in_package(const char* packagename) {
311 return is_in_package(packagename, (int) strlen(packagename));
312 }
313 bool is_in_package(const char* packagename, int len);
314
315 // What kind of ciObject is this?
316 bool is_instance_klass() const { return true; }
317
318 virtual ciKlass* exact_klass() {
319 if (is_loaded() && is_final() && !is_interface()) {
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