125
126 template <class T>
127 oop load_reference_barrier_native_impl(oop obj, T* load_addr);
128
129 static void keep_alive_if_weak(DecoratorSet decorators, oop value) {
130 assert((decorators & ON_UNKNOWN_OOP_REF) == 0, "Reference strength must be known");
131 const bool on_strong_oop_ref = (decorators & ON_STRONG_OOP_REF) != 0;
132 const bool peek = (decorators & AS_NO_KEEPALIVE) != 0;
133 if (!peek && !on_strong_oop_ref && value != NULL) {
134 ShenandoahBarrierSet::barrier_set()->keep_alive_barrier(value);
135 }
136 }
137
138 public:
139 // Callbacks for runtime accesses.
140 template <DecoratorSet decorators, typename BarrierSetT = ShenandoahBarrierSet>
141 class AccessBarrier: public BarrierSet::AccessBarrier<decorators, BarrierSetT> {
142 typedef BarrierSet::AccessBarrier<decorators, BarrierSetT> Raw;
143
144 template <typename T>
145 static oop oop_atomic_cmpxchg_in_heap_impl(oop new_value, T* addr, oop compare_value);
146
147 template <typename T>
148 static oop oop_atomic_xchg_in_heap_impl(T* addr, oop new_value);
149
150 public:
151 // Heap oop accesses. These accessors get resolved when
152 // IN_HEAP is set (e.g. when using the HeapAccess API), it is
153 // an oop_* overload, and the barrier strength is AS_NORMAL.
154 template <typename T>
155 static oop oop_load_in_heap(T* addr);
156 static oop oop_load_in_heap_at(oop base, ptrdiff_t offset);
157
158 template <typename T>
159 static void oop_store_in_heap(T* addr, oop value);
160 static void oop_store_in_heap_at(oop base, ptrdiff_t offset, oop value);
161
162 template <typename T>
163 static oop oop_atomic_cmpxchg_in_heap(oop new_value, T* addr, oop compare_value);
164 static oop oop_atomic_cmpxchg_in_heap_at(oop new_value, oop base, ptrdiff_t offset, oop compare_value);
165
166 template <typename T>
167 static oop oop_atomic_xchg_in_heap(T* addr, oop new_value);
168 static oop oop_atomic_xchg_in_heap_at(oop base, ptrdiff_t offset, oop new_value);
169
170 template <typename T>
171 static bool oop_arraycopy_in_heap(arrayOop src_obj, size_t src_offset_in_bytes, T* src_raw,
172 arrayOop dst_obj, size_t dst_offset_in_bytes, T* dst_raw,
173 size_t length);
174
175 // Clone barrier support
176 static void clone_in_heap(oop src, oop dst, size_t size);
177
178 // Needed for loads on non-heap weak references
179 template <typename T>
180 static oop oop_load_not_in_heap(T* addr);
181
182 // Used for catching bad stores
183 template <typename T>
184 static void oop_store_not_in_heap(T* addr, oop value);
185
186 template <typename T>
187 static oop oop_atomic_cmpxchg_not_in_heap(oop new_value, T* addr, oop compare_value);
188
189 template <typename T>
190 static oop oop_atomic_xchg_not_in_heap(T* addr, oop new_value);
191
192 };
193
194 };
195
196 template<>
197 struct BarrierSet::GetName<ShenandoahBarrierSet> {
198 static const BarrierSet::Name value = BarrierSet::ShenandoahBarrierSet;
199 };
200
201 template<>
202 struct BarrierSet::GetType<BarrierSet::ShenandoahBarrierSet> {
203 typedef ::ShenandoahBarrierSet type;
204 };
205
206 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHBARRIERSET_HPP
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125
126 template <class T>
127 oop load_reference_barrier_native_impl(oop obj, T* load_addr);
128
129 static void keep_alive_if_weak(DecoratorSet decorators, oop value) {
130 assert((decorators & ON_UNKNOWN_OOP_REF) == 0, "Reference strength must be known");
131 const bool on_strong_oop_ref = (decorators & ON_STRONG_OOP_REF) != 0;
132 const bool peek = (decorators & AS_NO_KEEPALIVE) != 0;
133 if (!peek && !on_strong_oop_ref && value != NULL) {
134 ShenandoahBarrierSet::barrier_set()->keep_alive_barrier(value);
135 }
136 }
137
138 public:
139 // Callbacks for runtime accesses.
140 template <DecoratorSet decorators, typename BarrierSetT = ShenandoahBarrierSet>
141 class AccessBarrier: public BarrierSet::AccessBarrier<decorators, BarrierSetT> {
142 typedef BarrierSet::AccessBarrier<decorators, BarrierSetT> Raw;
143
144 template <typename T>
145 static oop oop_atomic_cmpxchg_in_heap_impl(T* addr, oop compare_value, oop new_value);
146
147 template <typename T>
148 static oop oop_atomic_xchg_in_heap_impl(T* addr, oop new_value);
149
150 public:
151 // Heap oop accesses. These accessors get resolved when
152 // IN_HEAP is set (e.g. when using the HeapAccess API), it is
153 // an oop_* overload, and the barrier strength is AS_NORMAL.
154 template <typename T>
155 static oop oop_load_in_heap(T* addr);
156 static oop oop_load_in_heap_at(oop base, ptrdiff_t offset);
157
158 template <typename T>
159 static void oop_store_in_heap(T* addr, oop value);
160 static void oop_store_in_heap_at(oop base, ptrdiff_t offset, oop value);
161
162 template <typename T>
163 static oop oop_atomic_cmpxchg_in_heap(T* addr, oop compare_value, oop new_value);
164 static oop oop_atomic_cmpxchg_in_heap_at(oop base, ptrdiff_t offset, oop compare_value, oop new_value);
165
166 template <typename T>
167 static oop oop_atomic_xchg_in_heap(T* addr, oop new_value);
168 static oop oop_atomic_xchg_in_heap_at(oop base, ptrdiff_t offset, oop new_value);
169
170 template <typename T>
171 static bool oop_arraycopy_in_heap(arrayOop src_obj, size_t src_offset_in_bytes, T* src_raw,
172 arrayOop dst_obj, size_t dst_offset_in_bytes, T* dst_raw,
173 size_t length);
174
175 // Clone barrier support
176 static void clone_in_heap(oop src, oop dst, size_t size);
177
178 // Needed for loads on non-heap weak references
179 template <typename T>
180 static oop oop_load_not_in_heap(T* addr);
181
182 // Used for catching bad stores
183 template <typename T>
184 static void oop_store_not_in_heap(T* addr, oop value);
185
186 template <typename T>
187 static oop oop_atomic_cmpxchg_not_in_heap(T* addr, oop compare_value, oop new_value);
188
189 template <typename T>
190 static oop oop_atomic_xchg_not_in_heap(T* addr, oop new_value);
191
192 };
193
194 };
195
196 template<>
197 struct BarrierSet::GetName<ShenandoahBarrierSet> {
198 static const BarrierSet::Name value = BarrierSet::ShenandoahBarrierSet;
199 };
200
201 template<>
202 struct BarrierSet::GetType<BarrierSet::ShenandoahBarrierSet> {
203 typedef ::ShenandoahBarrierSet type;
204 };
205
206 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHBARRIERSET_HPP
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