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