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