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_KLASSKLASS_HPP
26 #define SHARE_VM_OOPS_KLASSKLASS_HPP
28 #include "memory/oopFactory.hpp"
29 #include "oops/klass.hpp"
30 #include "oops/klassOop.hpp"
32 // A klassKlass serves as the fix point of the klass chain.
33 // The klass of klassKlass is itself.
35 class klassKlass: public Klass {
36 friend class VMStructs;
37 private:
38 juint _alloc_size; // allocation profiling support
39 public:
40 // Testing
41 bool oop_is_klass() const { return true; }
42 bool is_leaf_class() const { return true; }
44 // Sizing
45 int oop_size(oop obj) const;
46 int klass_oop_size() const { return object_size(); }
48 // Allocation
49 DEFINE_ALLOCATE_PERMANENT(klassKlass);
50 static klassOop create_klass(TRAPS );
52 // Casting from klassOop
53 static klassKlass* cast(klassOop k) {
54 assert(k->klass_part()->oop_is_klass(), "cast to klassKlass");
55 return (klassKlass*) k->klass_part();
56 }
58 // Sizing
59 static int header_size() { return oopDesc::header_size() + sizeof(klassKlass)/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);
66 // Parallel Scavenge and Parallel Old
67 PARALLEL_GC_DECLS
69 // Iterators
70 int oop_oop_iterate(oop obj, OopClosure* blk);
71 int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr);
73 // Allocation profiling support
74 juint alloc_size() const { return _alloc_size; }
75 void set_alloc_size(juint n) { _alloc_size = n; }
77 // Printing
78 void oop_print_value_on(oop obj, outputStream* st);
79 void oop_print_on (oop obj, outputStream* st);
81 // Verification
82 const char* internal_name() const;
83 void oop_verify_on(oop obj, outputStream* st);
84 };
86 #endif // SHARE_VM_OOPS_KLASSKLASS_HPP