40 friend class Runtime1;
41 friend class psPromotionManager;
42 friend class CSetMarkWordClosure;
43 friend class Continuation;
44 template <typename T>
45 friend class RawOopWriter;
46
47 template <class T> T* obj_at_addr(int index) const;
48
49 template <class T>
50 static ptrdiff_t obj_at_offset(int index) {
51 return base_offset_in_bytes() + sizeof(T) * index;
52 }
53
54 public:
55 // Returns the offset of the first element.
56 static int base_offset_in_bytes() {
57 return arrayOopDesc::base_offset_in_bytes(T_OBJECT);
58 }
59
60 // base is the address following the header.
61 HeapWord* base() const;
62
63 // Accessing
64 oop obj_at(int index) const;
65
66 void obj_at_put(int index, oop value);
67
68 oop replace_if_null(int index, oop exchange_value);
69
70 // Sizing
71 size_t object_size() { return object_size(length()); }
72
73 static size_t object_size(int length) {
74 // This returns the object size in HeapWords.
75 size_t asz = (size_t)length * heapOopSize;
76 size_t size_words = heap_word_size(base_offset_in_bytes() + asz);
77 size_t osz = align_object_size(size_words);
78 assert(osz < max_jint, "no overflow");
79 return osz;
80 }
81
82 Klass* element_klass();
83
84 public:
85 // special iterators for index ranges, returns size of object
86 template <typename OopClosureType>
87 void oop_iterate_range(OopClosureType* blk, int start, int end);
88 };
89
90 // See similar requirement for oopDesc.
91 static_assert(std::is_trivially_default_constructible<objArrayOopDesc>::value, "required");
92
93 #endif // SHARE_OOPS_OBJARRAYOOP_HPP
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40 friend class Runtime1;
41 friend class psPromotionManager;
42 friend class CSetMarkWordClosure;
43 friend class Continuation;
44 template <typename T>
45 friend class RawOopWriter;
46
47 template <class T> T* obj_at_addr(int index) const;
48
49 template <class T>
50 static ptrdiff_t obj_at_offset(int index) {
51 return base_offset_in_bytes() + sizeof(T) * index;
52 }
53
54 public:
55 // Returns the offset of the first element.
56 static int base_offset_in_bytes() {
57 return arrayOopDesc::base_offset_in_bytes(T_OBJECT);
58 }
59
60 inline static objArrayOop cast(oop o);
61
62 // base is the address following the header.
63 HeapWord* base() const;
64
65 // Accessing
66 oop obj_at(int index) const;
67 oop obj_at(int index, TRAPS) const;
68
69 void obj_at_put(int index, oop value);
70 void obj_at_put(int index, oop value, TRAPS);
71
72 Klass* element_klass();
73
74 public:
75 // special iterators for index ranges, returns size of object
76 template <typename OopClosureType>
77 void oop_iterate_range(OopClosureType* blk, int start, int end);
78 };
79
80 // See similar requirement for oopDesc.
81 static_assert(std::is_trivially_default_constructible<objArrayOopDesc>::value, "required");
82
83 #endif // SHARE_OOPS_OBJARRAYOOP_HPP
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