Thu, 29 Mar 2012 22:18:56 -0400
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
Summary: Change implementor to embedded instanceKlass field.
Reviewed-by: sspitsyn, minqi, coleenp
1 /*
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25 #ifndef SHARE_VM_OOPS_INSTANCEKLASSKLASS_HPP
26 #define SHARE_VM_OOPS_INSTANCEKLASSKLASS_HPP
28 #include "oops/klassKlass.hpp"
30 // An instanceKlassKlass is the klass of an instanceKlass
32 class instanceKlassKlass : public klassKlass {
33 public:
34 // Dispatched operation
35 bool oop_is_klass() const { return true; }
36 bool oop_is_instanceKlass() const { return true; }
38 int oop_size(oop obj) const;
39 int klass_oop_size() const { return object_size(); }
41 // Allocation
42 DEFINE_ALLOCATE_PERMANENT(instanceKlassKlass);
43 static klassOop create_klass(TRAPS);
44 klassOop allocate_instance_klass(Symbol* name,
45 int vtable_len,
46 int itable_len,
47 int static_field_size,
48 unsigned int nonstatic_oop_map_count,
49 AccessFlags access_flags,
50 ReferenceType rt,
51 TRAPS);
53 // Casting from klassOop
54 static instanceKlassKlass* cast(klassOop k) {
55 assert(k->klass_part()->oop_is_klass(), "cast to instanceKlassKlass");
56 return (instanceKlassKlass*) k->klass_part();
57 }
59 // Sizing
60 static int header_size() { return oopDesc::header_size() + sizeof(instanceKlassKlass)/HeapWordSize; }
61 int object_size() const { return align_object_size(header_size()); }
63 // Garbage collection
64 void oop_follow_contents(oop obj);
65 int oop_adjust_pointers(oop obj);
66 bool oop_is_parsable(oop obj) const;
68 // Parallel Scavenge and Parallel Old
69 PARALLEL_GC_DECLS
71 // Iterators
72 int oop_oop_iterate(oop obj, OopClosure* blk);
73 int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr);
75 private:
76 // Apply closure to the InstanceKlass oops that are outside the java heap.
77 inline void iterate_c_heap_oops(instanceKlass* ik, OopClosure* closure);
79 public:
80 // Printing
81 void oop_print_value_on(oop obj, outputStream* st);
82 #ifndef PRODUCT
83 void oop_print_on(oop obj, outputStream* st);
84 #endif
86 // Verification
87 const char* internal_name() const;
88 void oop_verify_on(oop obj, outputStream* st);
89 // tells whether obj is partially constructed (gc during class loading)
90 bool oop_partially_loaded(oop obj) const;
91 void oop_set_partially_loaded(oop obj);
92 };
94 #endif // SHARE_VM_OOPS_INSTANCEKLASSKLASS_HPP