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 void compute_shared_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 // Update the init_state for shared klasses
116 void update_if_shared(InstanceKlass::ClassState expected) {
117 if (_is_shared && _init_state != expected) {
118 if (is_loaded()) compute_shared_init_state();
119 }
120 }
121
122 public:
123 // Has this klass been initialized?
124 bool is_initialized() {
125 update_if_shared(InstanceKlass::fully_initialized);
126 return _init_state == InstanceKlass::fully_initialized;
127 }
128 bool is_not_initialized() {
129 update_if_shared(InstanceKlass::fully_initialized);
130 return _init_state < InstanceKlass::being_initialized;
131 }
132 // Is this klass being initialized?
198 bool has_nonstatic_concrete_methods() {
199 assert(is_loaded(), "must be loaded");
200 return _has_nonstatic_concrete_methods;
201 }
202
203 bool is_hidden() const {
204 return _is_hidden;
205 }
206
207 bool is_record() const {
208 return _is_record;
209 }
210
211 bool trust_final_fields() const {
212 return _trust_final_fields;
213 }
214
215 ciInstanceKlass* get_canonical_holder(int offset);
216 ciField* get_field_by_offset(int field_offset, bool is_static);
217 ciField* get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static);
218 BasicType get_field_type_by_offset(int field_offset, bool is_static);
219
220 // total number of nonstatic fields (including inherited):
221 int nof_nonstatic_fields() {
222 if (_nonstatic_fields == nullptr)
223 return compute_nonstatic_fields();
224 else
225 return _nonstatic_fields->length();
226 }
227
228 bool has_injected_fields() {
229 if (_has_injected_fields == -1) {
230 compute_injected_fields();
231 }
232 return _has_injected_fields > 0 ? true : false;
233 }
234
235 bool has_object_fields() const;
236
237 // nth nonstatic field (presented by ascending address)
238 ciField* nonstatic_field_at(int i) {
239 assert(_nonstatic_fields != nullptr, "");
240 return _nonstatic_fields->at(i);
241 }
242
243 ciInstanceKlass* unique_concrete_subklass();
244 bool has_finalizable_subclass();
245
246 bool has_class_initializer();
247
248 bool contains_field_offset(int offset);
249
250 // Get the instance of java.lang.Class corresponding to
251 // this klass. This instance is used for locking of
252 // synchronized static methods of this klass.
253 ciInstance* java_mirror();
254
255 // Java access flags
256 bool is_public () { return flags().is_public(); }
257 bool is_final () { return flags().is_final(); }
258 bool is_super () { return flags().is_super(); }
259 bool is_interface () { return flags().is_interface(); }
260 bool is_abstract () { return flags().is_abstract(); }
261
262 ciMethod* find_method(ciSymbol* name, ciSymbol* signature);
263 // Note: To find a method from name and type strings, use ciSymbol::make,
264 // but consider adding to vmSymbols.hpp instead.
265
266 bool is_leaf_type();
267 ciInstanceKlass* implementor();
268
269 ciInstanceKlass* unique_implementor() {
270 assert(is_loaded(), "must be loaded");
271 assert(is_interface(), "must be");
272 ciInstanceKlass* impl = implementor();
273 return (impl != this ? impl : nullptr);
274 }
275
276 // Is the defining class loader of this class the default loader?
277 bool uses_default_loader() const;
278
279 bool is_java_lang_Object() const;
280
281 BasicType box_klass_type() const;
282 bool is_box_klass() const;
283 bool is_boxed_value_offset(int offset) const;
284
285 // Is this klass in the given package?
286 bool is_in_package(const char* packagename) {
287 return is_in_package(packagename, (int) strlen(packagename));
288 }
289 bool is_in_package(const char* packagename, int len);
290
291 // What kind of ciObject is this?
292 bool is_instance_klass() const { return true; }
293
294 virtual ciKlass* exact_klass() {
295 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 void compute_shared_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 // Update the init_state for shared klasses
129 void update_if_shared(InstanceKlass::ClassState expected) {
130 if (_is_shared && _init_state != expected) {
131 if (is_loaded()) compute_shared_init_state();
132 }
133 }
134
135 public:
136 // Has this klass been initialized?
137 bool is_initialized() {
138 update_if_shared(InstanceKlass::fully_initialized);
139 return _init_state == InstanceKlass::fully_initialized;
140 }
141 bool is_not_initialized() {
142 update_if_shared(InstanceKlass::fully_initialized);
143 return _init_state < InstanceKlass::being_initialized;
144 }
145 // Is this klass being initialized?
211 bool has_nonstatic_concrete_methods() {
212 assert(is_loaded(), "must be loaded");
213 return _has_nonstatic_concrete_methods;
214 }
215
216 bool is_hidden() const {
217 return _is_hidden;
218 }
219
220 bool is_record() const {
221 return _is_record;
222 }
223
224 bool trust_final_fields() const {
225 return _trust_final_fields;
226 }
227
228 ciInstanceKlass* get_canonical_holder(int offset);
229 ciField* get_field_by_offset(int field_offset, bool is_static);
230 ciField* get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static);
231 // Get field descriptor at field_offset ignoring flattening
232 ciField* get_non_flat_field_by_offset(int field_offset);
233 // Get the index of the declared field that contains this offset
234 int field_index_by_offset(int offset);
235
236 // Total number of nonstatic fields (including inherited)
237 int nof_declared_nonstatic_fields() {
238 if (_declared_nonstatic_fields == nullptr) {
239 compute_nonstatic_fields();
240 }
241 return _declared_nonstatic_fields->length();
242 }
243 BasicType get_field_type_by_offset(int field_offset, bool is_static);
244
245 int nof_nonstatic_fields() {
246 if (_nonstatic_fields == nullptr) {
247 compute_nonstatic_fields();
248 }
249 return _nonstatic_fields->length();
250 }
251
252 bool has_injected_fields() {
253 if (_has_injected_fields == -1) {
254 compute_injected_fields();
255 }
256 return _has_injected_fields > 0 ? true : false;
257 }
258
259 bool has_object_fields() const;
260
261 ciField* declared_nonstatic_field_at(int i) {
262 assert(_declared_nonstatic_fields != nullptr, "should be initialized");
263 return _declared_nonstatic_fields->at(i);
264 }
265
266 ciField* nonstatic_field_at(int i) {
267 assert(_nonstatic_fields != nullptr, "");
268 return _nonstatic_fields->at(i);
269 }
270
271 ciInstanceKlass* unique_concrete_subklass();
272 bool has_finalizable_subclass();
273
274 bool has_class_initializer();
275
276 bool contains_field_offset(int offset);
277
278 // Get the instance of java.lang.Class corresponding to
279 // this klass. This instance is used for locking of
280 // synchronized static methods of this klass.
281 ciInstance* java_mirror();
282
283 // Java access flags
284 bool is_public () { return flags().is_public(); }
285 bool is_final () { return flags().is_final(); }
286 bool is_interface () { return flags().is_interface(); }
287 bool is_abstract () { return flags().is_abstract(); }
288 bool is_abstract_value_klass() { return is_abstract() && !flags().is_identity(); }
289
290 ciMethod* find_method(ciSymbol* name, ciSymbol* signature);
291 // Note: To find a method from name and type strings, use ciSymbol::make,
292 // but consider adding to vmSymbols.hpp instead.
293
294 bool is_leaf_type();
295 ciInstanceKlass* implementor();
296
297 ciInstanceKlass* unique_implementor() {
298 assert(is_loaded(), "must be loaded");
299 assert(is_interface(), "must be");
300 ciInstanceKlass* impl = implementor();
301 return (impl != this ? impl : nullptr);
302 }
303
304 virtual bool can_be_inline_klass(bool is_exact = false);
305
306 // Is the defining class loader of this class the default loader?
307 bool uses_default_loader() const;
308
309 bool is_java_lang_Object() const;
310
311 BasicType box_klass_type() const;
312 bool is_box_klass() const;
313 bool is_boxed_value_offset(int offset) const;
314
315 // Is this klass in the given package?
316 bool is_in_package(const char* packagename) {
317 return is_in_package(packagename, (int) strlen(packagename));
318 }
319 bool is_in_package(const char* packagename, int len);
320
321 // What kind of ciObject is this?
322 bool is_instance_klass() const { return true; }
323
324 virtual ciKlass* exact_klass() {
325 if (is_loaded() && is_final() && !is_interface()) {
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