62 bool dest_uninitialized = false) {}
63 virtual void write_ref_array_pre(narrowOop* dst, size_t length,
64 bool dest_uninitialized = false) {}
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 protected:
70 virtual void write_ref_array_work(MemRegion mr) = 0;
71
72 public:
73 // The ModRef abstraction introduces pre and post barriers
74 template <DecoratorSet decorators, typename BarrierSetT>
75 class AccessBarrier: public BarrierSet::AccessBarrier<decorators, BarrierSetT> {
76 typedef BarrierSet::AccessBarrier<decorators, BarrierSetT> Raw;
77
78 public:
79 template <typename T>
80 static void oop_store_in_heap(T* addr, oop value);
81 template <typename T>
82 static oop oop_atomic_cmpxchg_in_heap(oop new_value, T* addr, oop compare_value);
83 template <typename T>
84 static oop oop_atomic_xchg_in_heap(oop new_value, T* addr);
85
86 template <typename T>
87 static bool oop_arraycopy_in_heap(arrayOop src_obj, size_t src_offset_in_bytes, T* src_raw,
88 arrayOop dst_obj, size_t dst_offset_in_bytes, T* dst_raw,
89 size_t length);
90
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 new_value, oop base, ptrdiff_t offset) {
98 return oop_atomic_xchg_in_heap(new_value, AccessInternal::oop_field_addr<decorators>(base, offset));
99 }
100
101 static oop oop_atomic_cmpxchg_in_heap_at(oop new_value, oop base, ptrdiff_t offset, oop compare_value) {
102 return oop_atomic_cmpxchg_in_heap(new_value, AccessInternal::oop_field_addr<decorators>(base, offset), compare_value);
103 }
104 };
105 };
106
107 template<>
108 struct BarrierSet::GetName<ModRefBarrierSet> {
109 static const BarrierSet::Name value = BarrierSet::ModRef;
110 };
111
112 #endif // SHARE_GC_SHARED_MODREFBARRIERSET_HPP
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62 bool dest_uninitialized = false) {}
63 virtual void write_ref_array_pre(narrowOop* dst, size_t length,
64 bool dest_uninitialized = false) {}
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 protected:
70 virtual void write_ref_array_work(MemRegion mr) = 0;
71
72 public:
73 // The ModRef abstraction introduces pre and post barriers
74 template <DecoratorSet decorators, typename BarrierSetT>
75 class AccessBarrier: public BarrierSet::AccessBarrier<decorators, BarrierSetT> {
76 typedef BarrierSet::AccessBarrier<decorators, BarrierSetT> Raw;
77
78 public:
79 template <typename T>
80 static void oop_store_in_heap(T* addr, oop value);
81 template <typename T>
82 static oop oop_atomic_cmpxchg_in_heap(T* addr, oop compare_value, oop new_value);
83 template <typename T>
84 static oop oop_atomic_xchg_in_heap(T* addr, oop new_value);
85
86 template <typename T>
87 static bool oop_arraycopy_in_heap(arrayOop src_obj, size_t src_offset_in_bytes, T* src_raw,
88 arrayOop dst_obj, size_t dst_offset_in_bytes, T* dst_raw,
89 size_t length);
90
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 };
106
107 template<>
108 struct BarrierSet::GetName<ModRefBarrierSet> {
109 static const BarrierSet::Name value = BarrierSet::ModRef;
110 };
111
112 #endif // SHARE_GC_SHARED_MODREFBARRIERSET_HPP
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