27
28 #include "oops/arrayKlass.hpp"
29 #include "utilities/macros.hpp"
30
31 class ClassLoaderData;
32
33 // ObjArrayKlass is the klass for objArrays
34
35 class ObjArrayKlass : public ArrayKlass {
36 friend class Deoptimization;
37 friend class JVMCIVMStructs;
38 friend class oopFactory;
39 friend class VMStructs;
40
41 public:
42 static const KlassKind Kind = ObjArrayKlassKind;
43
44 private:
45 // If you add a new field that points to any metaspace object, you
46 // must add this field to ObjArrayKlass::metaspace_pointers_do().
47 Klass* _element_klass; // The klass of the elements of this array type
48 Klass* _bottom_klass; // The one-dimensional type (InstanceKlass or TypeArrayKlass)
49
50 // Constructor
51 ObjArrayKlass(int n, Klass* element_klass, Symbol* name);
52 static ObjArrayKlass* allocate_klass(ClassLoaderData* loader_data, int n, Klass* k, Symbol* name, TRAPS);
53
54 objArrayOop allocate_instance(int length, TRAPS);
55
56 protected:
57 // Create array_name for element klass
58 static Symbol* create_element_klass_array_name(JavaThread* current, Klass* element_klass);
59
60 public:
61 // For dummy objects
62 ObjArrayKlass() {}
63
64 // Instance variables
65 Klass* element_klass() const { return _element_klass; }
66 void set_element_klass(Klass* k) { _element_klass = k; }
67 Klass** element_klass_addr() { return &_element_klass; }
68
69 Klass* bottom_klass() const { return _bottom_klass; }
70 void set_bottom_klass(Klass* k) { _bottom_klass = k; }
71 Klass** bottom_klass_addr() { return &_bottom_klass; }
72
73 ModuleEntry* module() const;
74 PackageEntry* package() const;
75
76 // Compiler/Interpreter offset
77 static ByteSize element_klass_offset() { return byte_offset_of(ObjArrayKlass, _element_klass); }
78
79 // Dispatched operation
80 bool can_be_primary_super_slow() const;
81 GrowableArray<Klass*>* compute_secondary_supers(int num_extra_slots,
82 Array<InstanceKlass*>* transitive_interfaces);
83 DEBUG_ONLY(bool is_objArray_klass_slow() const { return true; })
84 size_t oop_size(oop obj) const;
85
86 // Allocation
87 static ObjArrayKlass* allocate_objArray_klass(ClassLoaderData* loader_data,
88 int n, Klass* element_klass, TRAPS);
89
90 oop multi_allocate(int rank, jint* sizes, TRAPS);
91
92 // Copying
93 void copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS);
94
95 // Compute protection domain
96 oop protection_domain() const { return bottom_klass()->protection_domain(); }
97
98 virtual void metaspace_pointers_do(MetaspaceClosure* iter);
99
100 private:
101 // Either oop or narrowOop depending on UseCompressedOops.
102 // must be called from within ObjArrayKlass.cpp
103 void do_copy(arrayOop s, size_t src_offset,
104 arrayOop d, size_t dst_offset,
105 int length, TRAPS);
106 public:
107 static ObjArrayKlass* cast(Klass* k) {
108 return const_cast<ObjArrayKlass*>(cast(const_cast<const Klass*>(k)));
109 }
110
111 static const ObjArrayKlass* cast(const Klass* k) {
112 assert(k->is_objArray_klass(), "cast to ObjArrayKlass");
113 return static_cast<const ObjArrayKlass*>(k);
114 }
115
116 // Sizing
117 static int header_size() { return sizeof(ObjArrayKlass)/wordSize; }
118 int size() const { return ArrayKlass::static_size(header_size()); }
119
120 // Initialization (virtual from Klass)
121 void initialize(TRAPS);
122
123 // Oop fields (and metadata) iterators
124 //
125 // The ObjArrayKlass iterators also visits the Object's klass.
141 inline void oop_oop_iterate_range(objArrayOop a, OopClosureType* closure, int start, int end);
142
143 public:
144 // Iterate over all oop elements.
145 template <typename T, class OopClosureType>
146 inline void oop_oop_iterate_elements(objArrayOop a, OopClosureType* closure);
147
148 private:
149 // Iterate over all oop elements with indices within mr.
150 template <typename T, class OopClosureType>
151 inline void oop_oop_iterate_elements_bounded(objArrayOop a, OopClosureType* closure, void* low, void* high);
152
153 public:
154 u2 compute_modifier_flags() const;
155
156 public:
157 // Printing
158 void print_on(outputStream* st) const;
159 void print_value_on(outputStream* st) const;
160
161 void oop_print_value_on(oop obj, outputStream* st);
162 #ifndef PRODUCT
163 void oop_print_on (oop obj, outputStream* st);
164 #endif //PRODUCT
165
166 const char* internal_name() const;
167
168 // Verification
169 void verify_on(outputStream* st);
170
171 void oop_verify_on(oop obj, outputStream* st);
172 };
173
174 #endif // SHARE_OOPS_OBJARRAYKLASS_HPP
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27
28 #include "oops/arrayKlass.hpp"
29 #include "utilities/macros.hpp"
30
31 class ClassLoaderData;
32
33 // ObjArrayKlass is the klass for objArrays
34
35 class ObjArrayKlass : public ArrayKlass {
36 friend class Deoptimization;
37 friend class JVMCIVMStructs;
38 friend class oopFactory;
39 friend class VMStructs;
40
41 public:
42 static const KlassKind Kind = ObjArrayKlassKind;
43
44 private:
45 // If you add a new field that points to any metaspace object, you
46 // must add this field to ObjArrayKlass::metaspace_pointers_do().
47 Klass* _bottom_klass; // The one-dimensional type (InstanceKlass or TypeArrayKlass)
48 protected:
49 Klass* _element_klass; // The klass of the elements of this array type
50 ObjArrayKlass* _next_refined_array_klass;
51
52 protected:
53 // Constructor
54 ObjArrayKlass(int n, Klass* element_klass, Symbol* name, KlassKind kind, ArrayKlass::ArrayProperties props, markWord mw);
55 static ObjArrayKlass* allocate_klass(ClassLoaderData* loader_data, int n, Klass* k, Symbol* name, ArrayKlass::ArrayProperties props, TRAPS);
56
57 static ArrayDescription array_layout_selection(Klass* element, ArrayProperties properties);
58 virtual objArrayOop allocate_instance(int length, ArrayProperties props, TRAPS);
59
60 // Create array_name for element klass
61 static Symbol* create_element_klass_array_name(JavaThread* current, Klass* element_klass);
62
63 public:
64 // For dummy objects
65 ObjArrayKlass() {}
66
67 virtual Klass* element_klass() const { return _element_klass; }
68 virtual void set_element_klass(Klass* k) { _element_klass = k; }
69
70 // Compiler/Interpreter offset
71 static ByteSize element_klass_offset() { return in_ByteSize(offset_of(ObjArrayKlass, _element_klass)); }
72
73 ObjArrayKlass* next_refined_array_klass() const { return _next_refined_array_klass; }
74 inline ObjArrayKlass* next_refined_array_klass_acquire() const;
75 void set_next_refined_klass_klass(ObjArrayKlass* ak) { _next_refined_array_klass = ak; }
76 inline void release_set_next_refined_klass(ObjArrayKlass* ak);
77 ObjArrayKlass* klass_with_properties(ArrayKlass::ArrayProperties properties, TRAPS);
78 static ByteSize next_refined_array_klass_offset() { return byte_offset_of(ObjArrayKlass, _next_refined_array_klass); }
79
80 Klass* bottom_klass() const { return _bottom_klass; }
81 void set_bottom_klass(Klass* k) { _bottom_klass = k; }
82 Klass** bottom_klass_addr() { return &_bottom_klass; }
83
84 ModuleEntry* module() const;
85 PackageEntry* package() const;
86
87 // Dispatched operation
88 bool can_be_primary_super_slow() const;
89 GrowableArray<Klass*>* compute_secondary_supers(int num_extra_slots,
90 Array<InstanceKlass*>* transitive_interfaces);
91 DEBUG_ONLY(bool is_objArray_klass_slow() const { return true; })
92 size_t oop_size(oop obj) const;
93
94 // Allocation
95 static ObjArrayKlass* allocate_objArray_klass(ClassLoaderData* loader_data,
96 int n, Klass* element_klass, TRAPS);
97
98 oop multi_allocate(int rank, jint* sizes, TRAPS);
99
100 // Copying
101 void copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS);
102
103 // Compute protection domain
104 oop protection_domain() const { return bottom_klass()->protection_domain(); }
105
106 virtual void metaspace_pointers_do(MetaspaceClosure* iter);
107
108 #if INCLUDE_CDS
109 virtual void remove_unshareable_info();
110 virtual void remove_java_mirror();
111 void restore_unshareable_info(ClassLoaderData* loader_data, Handle protection_domain, TRAPS);
112 #endif
113
114 public:
115 static ObjArrayKlass* cast(Klass* k) {
116 return const_cast<ObjArrayKlass*>(cast(const_cast<const Klass*>(k)));
117 }
118
119 static const ObjArrayKlass* cast(const Klass* k) {
120 assert(k->is_objArray_klass(), "cast to ObjArrayKlass");
121 return static_cast<const ObjArrayKlass*>(k);
122 }
123
124 // Sizing
125 static int header_size() { return sizeof(ObjArrayKlass)/wordSize; }
126 int size() const { return ArrayKlass::static_size(header_size()); }
127
128 // Initialization (virtual from Klass)
129 void initialize(TRAPS);
130
131 // Oop fields (and metadata) iterators
132 //
133 // The ObjArrayKlass iterators also visits the Object's klass.
149 inline void oop_oop_iterate_range(objArrayOop a, OopClosureType* closure, int start, int end);
150
151 public:
152 // Iterate over all oop elements.
153 template <typename T, class OopClosureType>
154 inline void oop_oop_iterate_elements(objArrayOop a, OopClosureType* closure);
155
156 private:
157 // Iterate over all oop elements with indices within mr.
158 template <typename T, class OopClosureType>
159 inline void oop_oop_iterate_elements_bounded(objArrayOop a, OopClosureType* closure, void* low, void* high);
160
161 public:
162 u2 compute_modifier_flags() const;
163
164 public:
165 // Printing
166 void print_on(outputStream* st) const;
167 void print_value_on(outputStream* st) const;
168
169 virtual void oop_print_value_on(oop obj, outputStream* st);
170 #ifndef PRODUCT
171 virtual void oop_print_on (oop obj, outputStream* st);
172 #endif //PRODUCT
173
174 const char* internal_name() const;
175
176 // Verification
177 void verify_on(outputStream* st);
178
179 void oop_verify_on(oop obj, outputStream* st);
180 };
181
182 #endif // SHARE_OOPS_OBJARRAYKLASS_HPP
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