63 virtual void write_ref_array_pre(narrowOop* dst, size_t length,
64 bool dest_uninitialized) {}
65 // Below count is the # array elements being written, starting
66 // at the address "start", which may not necessarily be HeapWord-aligned
67 inline void write_ref_array(HeapWord* start, size_t count);
68
69 // The ModRef abstraction introduces pre and post barriers
70 template <DecoratorSet decorators, typename BarrierSetT>
71 class AccessBarrier: public BarrierSet::AccessBarrier<decorators, BarrierSetT> {
72 typedef BarrierSet::AccessBarrier<decorators, BarrierSetT> Raw;
73
74 public:
75 template <typename T>
76 static void oop_store_in_heap(T* addr, oop value);
77 template <typename T>
78 static oop oop_atomic_cmpxchg_in_heap(T* addr, oop compare_value, oop new_value);
79 template <typename T>
80 static oop oop_atomic_xchg_in_heap(T* addr, oop new_value);
81
82 template <typename T>
83 static bool oop_arraycopy_in_heap(arrayOop src_obj, size_t src_offset_in_bytes, T* src_raw,
84 arrayOop dst_obj, size_t dst_offset_in_bytes, T* dst_raw,
85 size_t length);
86
87 static void clone_in_heap(oop src, oop dst, size_t size);
88
89 static void oop_store_in_heap_at(oop base, ptrdiff_t offset, oop value) {
90 oop_store_in_heap(AccessInternal::oop_field_addr<decorators>(base, offset), value);
91 }
92
93 static oop oop_atomic_xchg_in_heap_at(oop base, ptrdiff_t offset, oop new_value) {
94 return oop_atomic_xchg_in_heap(AccessInternal::oop_field_addr<decorators>(base, offset), new_value);
95 }
96
97 static oop oop_atomic_cmpxchg_in_heap_at(oop base, ptrdiff_t offset, oop compare_value, oop new_value) {
98 return oop_atomic_cmpxchg_in_heap(AccessInternal::oop_field_addr<decorators>(base, offset), compare_value, new_value);
99 }
100 };
101 };
102
103 template<>
104 struct BarrierSet::GetName<ModRefBarrierSet> {
105 static const BarrierSet::Name value = BarrierSet::ModRef;
106 };
107
108 #endif // SHARE_GC_SHARED_MODREFBARRIERSET_HPP
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63 virtual void write_ref_array_pre(narrowOop* dst, size_t length,
64 bool dest_uninitialized) {}
65 // Below count is the # array elements being written, starting
66 // at the address "start", which may not necessarily be HeapWord-aligned
67 inline void write_ref_array(HeapWord* start, size_t count);
68
69 // The ModRef abstraction introduces pre and post barriers
70 template <DecoratorSet decorators, typename BarrierSetT>
71 class AccessBarrier: public BarrierSet::AccessBarrier<decorators, BarrierSetT> {
72 typedef BarrierSet::AccessBarrier<decorators, BarrierSetT> Raw;
73
74 public:
75 template <typename T>
76 static void oop_store_in_heap(T* addr, oop value);
77 template <typename T>
78 static oop oop_atomic_cmpxchg_in_heap(T* addr, oop compare_value, oop new_value);
79 template <typename T>
80 static oop oop_atomic_xchg_in_heap(T* addr, oop new_value);
81
82 template <typename T>
83 static void oop_arraycopy_in_heap(arrayOop src_obj, size_t src_offset_in_bytes, T* src_raw,
84 arrayOop dst_obj, size_t dst_offset_in_bytes, T* dst_raw,
85 size_t length);
86 private:
87 // Failing checkcast or check null during copy, still needs barrier
88 template <typename T>
89 static inline void oop_arraycopy_partial_barrier(BarrierSetT *bs, T* dst_raw, T* p);
90 public:
91 static void clone_in_heap(oop src, oop dst, size_t size);
92
93 static void oop_store_in_heap_at(oop base, ptrdiff_t offset, oop value) {
94 oop_store_in_heap(AccessInternal::oop_field_addr<decorators>(base, offset), value);
95 }
96
97 static oop oop_atomic_xchg_in_heap_at(oop base, ptrdiff_t offset, oop new_value) {
98 return oop_atomic_xchg_in_heap(AccessInternal::oop_field_addr<decorators>(base, offset), new_value);
99 }
100
101 static oop oop_atomic_cmpxchg_in_heap_at(oop base, ptrdiff_t offset, oop compare_value, oop new_value) {
102 return oop_atomic_cmpxchg_in_heap(AccessInternal::oop_field_addr<decorators>(base, offset), compare_value, new_value);
103 }
104
105 static void value_copy_in_heap(void* src, void* dst, InlineKlass* md, LayoutKind lk);
106 };
107 };
108
109 template<>
110 struct BarrierSet::GetName<ModRefBarrierSet> {
111 static const BarrierSet::Name value = BarrierSet::ModRef;
112 };
113
114 #endif // SHARE_GC_SHARED_MODREFBARRIERSET_HPP
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