196 int _nonstatic_field_size;
197 int _static_field_size; // number words used by static fields (oop and non-oop) in this klass
198 // Constant pool index to the utf8 entry of the Generic signature,
199 // or 0 if none.
200 u2 _generic_signature_index;
201 // Constant pool index to the utf8 entry for the name of source file
202 // containing this klass, 0 if not specified.
203 u2 _source_file_name_index;
204 u2 _static_oop_field_count;// number of static oop fields in this klass
205 u2 _java_fields_count; // The number of declared Java fields
206 int _nonstatic_oop_map_size;// size in words of nonstatic oop map blocks
207
208 int _itable_len; // length of Java itable (in words)
209 // _is_marked_dependent can be set concurrently, thus cannot be part of the
210 // _misc_flags.
211 bool _is_marked_dependent; // used for marking during flushing and deoptimization
212
213 public:
214 enum {
215 _extra_is_being_redefined = 1 << 0, // used for locking redefinition
216 _extra_has_value_fields = 1 << 1, // has value fields and related embedded section is not empty
217 _extra_is_bufferable = 1 << 2, // value can be buffered out side of the Java heap
218 _extra_has_vcc_klass = 1 << 3, // has a pointer to its Value Capable Class (MVT)
219 _extra_has_resolved_methods = 1 << 4 // resolved methods table entries added for this class
220 };
221
222 protected:
223 u1 _extra_flags;
224
225 // The low three bits of _misc_flags contains the kind field.
226 // This can be used to quickly discriminate among the five kinds of
227 // InstanceKlass.
228
229 static const unsigned _misc_kind_field_size = 3;
230 static const unsigned _misc_kind_field_pos = 0;
231 static const unsigned _misc_kind_field_mask = (1u << _misc_kind_field_size) - 1u;
232
233 static const unsigned _misc_kind_other = 0; // concrete InstanceKlass
234 static const unsigned _misc_kind_reference = 1; // InstanceRefKlass
235 static const unsigned _misc_kind_class_loader = 2; // InstanceClassLoaderKlass
236 static const unsigned _misc_kind_mirror = 3; // InstanceMirrorKlass
237 static const unsigned _misc_kind_value_type = 4; // ValueKlass
238
239 // Start after _misc_kind field.
382 _misc_flags |= _misc_has_nonstatic_fields;
383 } else {
384 _misc_flags &= ~_misc_has_nonstatic_fields;
385 }
386 }
387
388 bool has_value_fields() const {
389 return (_extra_flags & _extra_has_value_fields) != 0;
390 }
391 void set_has_value_fields() {
392 _extra_flags |= _extra_has_value_fields;
393 }
394
395 bool has_vcc_klass() const {
396 return (_extra_flags & _extra_has_vcc_klass) != 0;
397 }
398 void set_has_vcc_klass() {
399 _extra_flags |= _extra_has_vcc_klass;
400 }
401
402
403 // field sizes
404 int nonstatic_field_size() const { return _nonstatic_field_size; }
405 void set_nonstatic_field_size(int size) { _nonstatic_field_size = size; }
406
407 int static_field_size() const { return _static_field_size; }
408 void set_static_field_size(int size) { _static_field_size = size; }
409
410 int static_oop_field_count() const { return (int)_static_oop_field_count; }
411 void set_static_oop_field_count(u2 size) { _static_oop_field_count = size; }
412
413 // Java itable
414 int itable_length() const { return _itable_len; }
415 void set_itable_length(int len) { _itable_len = len; }
416
417 // array klasses
418 Klass* array_klasses() const { return _array_klasses; }
419 inline Klass* array_klasses_acquire() const; // load with acquire semantics
420 void set_array_klasses(Klass* k) { _array_klasses = k; }
421 inline void release_set_array_klasses(Klass* k); // store with release semantics
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196 int _nonstatic_field_size;
197 int _static_field_size; // number words used by static fields (oop and non-oop) in this klass
198 // Constant pool index to the utf8 entry of the Generic signature,
199 // or 0 if none.
200 u2 _generic_signature_index;
201 // Constant pool index to the utf8 entry for the name of source file
202 // containing this klass, 0 if not specified.
203 u2 _source_file_name_index;
204 u2 _static_oop_field_count;// number of static oop fields in this klass
205 u2 _java_fields_count; // The number of declared Java fields
206 int _nonstatic_oop_map_size;// size in words of nonstatic oop map blocks
207
208 int _itable_len; // length of Java itable (in words)
209 // _is_marked_dependent can be set concurrently, thus cannot be part of the
210 // _misc_flags.
211 bool _is_marked_dependent; // used for marking during flushing and deoptimization
212
213 public:
214 enum {
215 _extra_is_being_redefined = 1 << 0, // used for locking redefinition
216 _extra_has_resolved_methods = 1 << 1, // resolved methods table entries added for this class
217 _extra_has_value_fields = 1 << 2, // has value fields and related embedded section is not empty
218 _extra_is_bufferable = 1 << 3, // value can be buffered out side of the Java heap
219 _extra_has_vcc_klass = 1 << 4, // has a pointer to its Value Capable Class (MVT)
220 _extra_has_vcc_annotation = 1 << 5
221 };
222
223 protected:
224 u1 _extra_flags;
225
226 // The low three bits of _misc_flags contains the kind field.
227 // This can be used to quickly discriminate among the five kinds of
228 // InstanceKlass.
229
230 static const unsigned _misc_kind_field_size = 3;
231 static const unsigned _misc_kind_field_pos = 0;
232 static const unsigned _misc_kind_field_mask = (1u << _misc_kind_field_size) - 1u;
233
234 static const unsigned _misc_kind_other = 0; // concrete InstanceKlass
235 static const unsigned _misc_kind_reference = 1; // InstanceRefKlass
236 static const unsigned _misc_kind_class_loader = 2; // InstanceClassLoaderKlass
237 static const unsigned _misc_kind_mirror = 3; // InstanceMirrorKlass
238 static const unsigned _misc_kind_value_type = 4; // ValueKlass
239
240 // Start after _misc_kind field.
383 _misc_flags |= _misc_has_nonstatic_fields;
384 } else {
385 _misc_flags &= ~_misc_has_nonstatic_fields;
386 }
387 }
388
389 bool has_value_fields() const {
390 return (_extra_flags & _extra_has_value_fields) != 0;
391 }
392 void set_has_value_fields() {
393 _extra_flags |= _extra_has_value_fields;
394 }
395
396 bool has_vcc_klass() const {
397 return (_extra_flags & _extra_has_vcc_klass) != 0;
398 }
399 void set_has_vcc_klass() {
400 _extra_flags |= _extra_has_vcc_klass;
401 }
402
403 bool has_vcc_annotation() const {
404 return (_extra_flags &_extra_has_vcc_annotation) != 0;
405 }
406
407 void set_has_vcc_annotation() {
408 _extra_flags |= _extra_has_vcc_annotation;
409 }
410
411 // field sizes
412 int nonstatic_field_size() const { return _nonstatic_field_size; }
413 void set_nonstatic_field_size(int size) { _nonstatic_field_size = size; }
414
415 int static_field_size() const { return _static_field_size; }
416 void set_static_field_size(int size) { _static_field_size = size; }
417
418 int static_oop_field_count() const { return (int)_static_oop_field_count; }
419 void set_static_oop_field_count(u2 size) { _static_oop_field_count = size; }
420
421 // Java itable
422 int itable_length() const { return _itable_len; }
423 void set_itable_length(int len) { _itable_len = len; }
424
425 // array klasses
426 Klass* array_klasses() const { return _array_klasses; }
427 inline Klass* array_klasses_acquire() const; // load with acquire semantics
428 void set_array_klasses(Klass* k) { _array_klasses = k; }
429 inline void release_set_array_klasses(Klass* k); // store with release semantics
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