278 //
279 class klassItable {
280 private:
281 InstanceKlass* _klass; // my klass
282 int _table_offset; // offset of start of itable data within klass (in words)
283 int _size_offset_table; // size of offset table (in itableOffset entries)
284 int _size_method_table; // size of methodtable (in itableMethodEntry entries)
285
286 void initialize_itable_for_interface(int method_table_offset, InstanceKlass* interf_h,
287 GrowableArray<Method*>* supers, int start_offset);
288 void check_constraints(GrowableArray<Method*>* supers, TRAPS);
289 public:
290 klassItable(InstanceKlass* klass);
291
292 itableOffsetEntry* offset_entry(int i) { assert(0 <= i && i <= _size_offset_table, "index out of bounds");
293 return &((itableOffsetEntry*)vtable_start())[i]; }
294
295 itableMethodEntry* method_entry(int i) { assert(0 <= i && i <= _size_method_table, "index out of bounds");
296 return &((itableMethodEntry*)method_start())[i]; }
297
298 int size_offset_table() { return _size_offset_table; }
299
300 // Initialization
301 void initialize_itable_and_check_constraints(TRAPS);
302 void initialize_itable(GrowableArray<Method*>* supers = NULL);
303
304 #if INCLUDE_JVMTI
305 // RedefineClasses() API support:
306 // if any entry of this itable points to any of old_methods,
307 // replace it with the corresponding new_method.
308 // trace_name_printed is set to true if the current call has
309 // printed the klass name so that other routines in the adjust_*
310 // group don't print the klass name.
311 void adjust_method_entries(bool* trace_name_printed);
312 bool check_no_old_or_obsolete_entries();
313 void dump_itable();
314 #endif // INCLUDE_JVMTI
315
316 // Setup of itable
317 static int assign_itable_indices_for_interface(InstanceKlass* klass);
318 static int method_count_for_interface(InstanceKlass* klass);
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278 //
279 class klassItable {
280 private:
281 InstanceKlass* _klass; // my klass
282 int _table_offset; // offset of start of itable data within klass (in words)
283 int _size_offset_table; // size of offset table (in itableOffset entries)
284 int _size_method_table; // size of methodtable (in itableMethodEntry entries)
285
286 void initialize_itable_for_interface(int method_table_offset, InstanceKlass* interf_h,
287 GrowableArray<Method*>* supers, int start_offset);
288 void check_constraints(GrowableArray<Method*>* supers, TRAPS);
289 public:
290 klassItable(InstanceKlass* klass);
291
292 itableOffsetEntry* offset_entry(int i) { assert(0 <= i && i <= _size_offset_table, "index out of bounds");
293 return &((itableOffsetEntry*)vtable_start())[i]; }
294
295 itableMethodEntry* method_entry(int i) { assert(0 <= i && i <= _size_method_table, "index out of bounds");
296 return &((itableMethodEntry*)method_start())[i]; }
297
298 InstanceKlass* klass() const { return _klass; }
299 int table_offset() const { return _table_offset; }
300 int size_offset_table() const { return _size_offset_table; }
301 int size_method_table() const { return _size_method_table; }
302
303 // Initialization
304 void initialize_itable_and_check_constraints(TRAPS);
305 void initialize_itable(GrowableArray<Method*>* supers = NULL);
306
307 #if INCLUDE_JVMTI
308 // RedefineClasses() API support:
309 // if any entry of this itable points to any of old_methods,
310 // replace it with the corresponding new_method.
311 // trace_name_printed is set to true if the current call has
312 // printed the klass name so that other routines in the adjust_*
313 // group don't print the klass name.
314 void adjust_method_entries(bool* trace_name_printed);
315 bool check_no_old_or_obsolete_entries();
316 void dump_itable();
317 #endif // INCLUDE_JVMTI
318
319 // Setup of itable
320 static int assign_itable_indices_for_interface(InstanceKlass* klass);
321 static int method_count_for_interface(InstanceKlass* klass);
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