Tue, 15 Nov 2011 20:17:33 +0100
7110152: assert(size_in_words <= (julong)max_jint) failed: no overflow
Summary: Reduce what arrayOopDesc::max_array_length() returns to avoid int overflow
Reviewed-by: kvn, dholmes, tonyp
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 ReferenceType rt,
50 TRAPS);
52 // Casting from klassOop
53 static instanceKlassKlass* cast(klassOop k) {
54 assert(k->klass_part()->oop_is_klass(), "cast to instanceKlassKlass");
55 return (instanceKlassKlass*) k->klass_part();
56 }
58 // Sizing
59 static int header_size() { return oopDesc::header_size() + sizeof(instanceKlassKlass)/HeapWordSize; }
60 int object_size() const { return align_object_size(header_size()); }
62 // Garbage collection
63 void oop_follow_contents(oop obj);
64 int oop_adjust_pointers(oop obj);
65 bool oop_is_parsable(oop obj) const;
67 // Parallel Scavenge and Parallel Old
68 PARALLEL_GC_DECLS
70 // Iterators
71 int oop_oop_iterate(oop obj, OopClosure* blk);
72 int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr);
74 private:
75 // Apply closure to the InstanceKlass oops that are outside the java heap.
76 inline void iterate_c_heap_oops(instanceKlass* ik, OopClosure* closure);
78 public:
79 // Printing
80 void oop_print_value_on(oop obj, outputStream* st);
81 #ifndef PRODUCT
82 void oop_print_on(oop obj, outputStream* st);
83 #endif
85 // Verification
86 const char* internal_name() const;
87 void oop_verify_on(oop obj, outputStream* st);
88 // tells whether obj is partially constructed (gc during class loading)
89 bool oop_partially_loaded(oop obj) const;
90 void oop_set_partially_loaded(oop obj);
91 };
93 #endif // SHARE_VM_OOPS_INSTANCEKLASSKLASS_HPP