65 virtual void write_ref_array_pre(narrowOop* dst, size_t length,
66 bool dest_uninitialized) {}
67 // Below count is the # array elements being written, starting
68 // at the address "start", which may not necessarily be HeapWord-aligned
69 inline void write_ref_array(HeapWord* start, size_t count);
70
71 // The ModRef abstraction introduces pre and post barriers
72 template <DecoratorSet decorators, typename BarrierSetT>
73 class AccessBarrier: public BarrierSet::AccessBarrier<decorators, BarrierSetT> {
74 typedef BarrierSet::AccessBarrier<decorators, BarrierSetT> Raw;
75
76 public:
77 template <typename T>
78 static void oop_store_in_heap(T* addr, oop value);
79 template <typename T>
80 static oop oop_atomic_cmpxchg_in_heap(T* addr, oop compare_value, oop new_value);
81 template <typename T>
82 static oop oop_atomic_xchg_in_heap(T* addr, oop new_value);
83
84 template <typename T>
85 static bool oop_arraycopy_in_heap(arrayOop src_obj, size_t src_offset_in_bytes, T* src_raw,
86 arrayOop dst_obj, size_t dst_offset_in_bytes, T* dst_raw,
87 size_t length);
88
89 static void clone_in_heap(oop src, oop dst, size_t size);
90
91 static void oop_store_in_heap_at(oop base, ptrdiff_t offset, oop value) {
92 oop_store_in_heap(AccessInternal::oop_field_addr<decorators>(base, offset), value);
93 }
94
95 static oop oop_atomic_xchg_in_heap_at(oop base, ptrdiff_t offset, oop new_value) {
96 return oop_atomic_xchg_in_heap(AccessInternal::oop_field_addr<decorators>(base, offset), new_value);
97 }
98
99 static oop oop_atomic_cmpxchg_in_heap_at(oop base, ptrdiff_t offset, oop compare_value, oop new_value) {
100 return oop_atomic_cmpxchg_in_heap(AccessInternal::oop_field_addr<decorators>(base, offset), compare_value, new_value);
101 }
102 };
103 };
104
105 template<>
106 struct BarrierSet::GetName<ModRefBarrierSet> {
107 static const BarrierSet::Name value = BarrierSet::ModRef;
108 };
109
110 #endif // SHARE_GC_SHARED_MODREFBARRIERSET_HPP
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65 virtual void write_ref_array_pre(narrowOop* dst, size_t length,
66 bool dest_uninitialized) {}
67 // Below count is the # array elements being written, starting
68 // at the address "start", which may not necessarily be HeapWord-aligned
69 inline void write_ref_array(HeapWord* start, size_t count);
70
71 // The ModRef abstraction introduces pre and post barriers
72 template <DecoratorSet decorators, typename BarrierSetT>
73 class AccessBarrier: public BarrierSet::AccessBarrier<decorators, BarrierSetT> {
74 typedef BarrierSet::AccessBarrier<decorators, BarrierSetT> Raw;
75
76 public:
77 template <typename T>
78 static void oop_store_in_heap(T* addr, oop value);
79 template <typename T>
80 static oop oop_atomic_cmpxchg_in_heap(T* addr, oop compare_value, oop new_value);
81 template <typename T>
82 static oop oop_atomic_xchg_in_heap(T* addr, oop new_value);
83
84 template <typename T>
85 static void oop_arraycopy_in_heap(arrayOop src_obj, size_t src_offset_in_bytes, T* src_raw,
86 arrayOop dst_obj, size_t dst_offset_in_bytes, T* dst_raw,
87 size_t length);
88 private:
89 // Failing checkcast or check null during copy, still needs barrier
90 template <typename T>
91 static inline void oop_arraycopy_partial_barrier(BarrierSetT *bs, T* dst_raw, T* p);
92 public:
93 static void clone_in_heap(oop src, oop dst, size_t size);
94
95 static void oop_store_in_heap_at(oop base, ptrdiff_t offset, oop value) {
96 oop_store_in_heap(AccessInternal::oop_field_addr<decorators>(base, offset), value);
97 }
98
99 static oop oop_atomic_xchg_in_heap_at(oop base, ptrdiff_t offset, oop new_value) {
100 return oop_atomic_xchg_in_heap(AccessInternal::oop_field_addr<decorators>(base, offset), new_value);
101 }
102
103 static oop oop_atomic_cmpxchg_in_heap_at(oop base, ptrdiff_t offset, oop compare_value, oop new_value) {
104 return oop_atomic_cmpxchg_in_heap(AccessInternal::oop_field_addr<decorators>(base, offset), compare_value, new_value);
105 }
106
107 static void value_copy_in_heap(void* src, void* dst, InlineKlass* md, LayoutKind lk);
108 };
109 };
110
111 template<>
112 struct BarrierSet::GetName<ModRefBarrierSet> {
113 static const BarrierSet::Name value = BarrierSet::ModRef;
114 };
115
116 #endif // SHARE_GC_SHARED_MODREFBARRIERSET_HPP
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