66
67 static bool is_strong_access(DecoratorSet decorators) {
68 return (decorators & (ON_WEAK_OOP_REF | ON_PHANTOM_OOP_REF)) == 0;
69 }
70
71 static bool is_weak_access(DecoratorSet decorators) {
72 return (decorators & ON_WEAK_OOP_REF) != 0;
73 }
74
75 static bool is_phantom_access(DecoratorSet decorators) {
76 return (decorators & ON_PHANTOM_OOP_REF) != 0;
77 }
78
79 static bool is_native_access(DecoratorSet decorators) {
80 return (decorators & IN_NATIVE) != 0;
81 }
82
83 void print_on(outputStream* st) const override;
84
85 template <class T>
86 inline void arraycopy_barrier(T* src, T* dst, size_t count);
87
88 // Support for optimizing compilers to call the barrier set on slow path allocations
89 // that did not enter a TLAB. Used for e.g. ReduceInitialCardMarks to take any
90 // compensating actions to restore card-marks that might otherwise be incorrectly elided.
91 void on_slowpath_allocation_exit(JavaThread* thread, oop new_obj) override;
92 void on_thread_create(Thread* thread) override;
93 void on_thread_destroy(Thread* thread) override;
94 void on_thread_attach(Thread* thread) override;
95 void on_thread_detach(Thread* thread) override;
96
97 template <DecoratorSet decorators, typename T>
98 inline void satb_barrier(T* field);
99 inline void satb_enqueue(oop value);
100
101 inline void keep_alive_if_weak(DecoratorSet decorators, oop value);
102
103 inline void enqueue(oop obj, bool filter = true);
104
105 inline oop load_reference_barrier(oop obj);
106
161 template <typename T>
162 static void oop_store_in_heap(T* addr, oop value);
163 static void oop_store_in_heap_at(oop base, ptrdiff_t offset, oop value);
164
165 template <typename T>
166 static oop oop_atomic_cmpxchg_in_heap(T* addr, oop compare_value, oop new_value);
167 static oop oop_atomic_cmpxchg_in_heap_at(oop base, ptrdiff_t offset, oop compare_value, oop new_value);
168
169 template <typename T>
170 static oop oop_atomic_xchg_in_heap(T* addr, oop new_value);
171 static oop oop_atomic_xchg_in_heap_at(oop base, ptrdiff_t offset, oop new_value);
172
173 template <typename T>
174 static OopCopyResult oop_arraycopy_in_heap(arrayOop src_obj, size_t src_offset_in_bytes, T* src_raw,
175 arrayOop dst_obj, size_t dst_offset_in_bytes, T* dst_raw,
176 size_t length);
177
178 // Clone barrier support
179 static void clone_in_heap(oop src, oop dst, size_t size);
180
181 // Support for concurrent roots evacuation, updating and weak roots clearing
182 template <typename T>
183 static oop oop_load_not_in_heap(T* addr);
184
185 // Support for concurrent roots marking
186 template <typename T>
187 static void oop_store_not_in_heap(T* addr, oop value);
188
189 template <typename T>
190 static oop oop_atomic_cmpxchg_not_in_heap(T* addr, oop compare_value, oop new_value);
191
192 template <typename T>
193 static oop oop_atomic_xchg_not_in_heap(T* addr, oop new_value);
194 };
195
196 };
197
198 template<>
199 struct BarrierSet::GetName<ShenandoahBarrierSet> {
200 static const BarrierSet::Name value = BarrierSet::ShenandoahBarrierSet;
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66
67 static bool is_strong_access(DecoratorSet decorators) {
68 return (decorators & (ON_WEAK_OOP_REF | ON_PHANTOM_OOP_REF)) == 0;
69 }
70
71 static bool is_weak_access(DecoratorSet decorators) {
72 return (decorators & ON_WEAK_OOP_REF) != 0;
73 }
74
75 static bool is_phantom_access(DecoratorSet decorators) {
76 return (decorators & ON_PHANTOM_OOP_REF) != 0;
77 }
78
79 static bool is_native_access(DecoratorSet decorators) {
80 return (decorators & IN_NATIVE) != 0;
81 }
82
83 void print_on(outputStream* st) const override;
84
85 template <class T>
86 inline void arraycopy_barrier(T* src, T* dst, size_t count, bool dest_uninit);
87
88 // Support for optimizing compilers to call the barrier set on slow path allocations
89 // that did not enter a TLAB. Used for e.g. ReduceInitialCardMarks to take any
90 // compensating actions to restore card-marks that might otherwise be incorrectly elided.
91 void on_slowpath_allocation_exit(JavaThread* thread, oop new_obj) override;
92 void on_thread_create(Thread* thread) override;
93 void on_thread_destroy(Thread* thread) override;
94 void on_thread_attach(Thread* thread) override;
95 void on_thread_detach(Thread* thread) override;
96
97 template <DecoratorSet decorators, typename T>
98 inline void satb_barrier(T* field);
99 inline void satb_enqueue(oop value);
100
101 inline void keep_alive_if_weak(DecoratorSet decorators, oop value);
102
103 inline void enqueue(oop obj, bool filter = true);
104
105 inline oop load_reference_barrier(oop obj);
106
161 template <typename T>
162 static void oop_store_in_heap(T* addr, oop value);
163 static void oop_store_in_heap_at(oop base, ptrdiff_t offset, oop value);
164
165 template <typename T>
166 static oop oop_atomic_cmpxchg_in_heap(T* addr, oop compare_value, oop new_value);
167 static oop oop_atomic_cmpxchg_in_heap_at(oop base, ptrdiff_t offset, oop compare_value, oop new_value);
168
169 template <typename T>
170 static oop oop_atomic_xchg_in_heap(T* addr, oop new_value);
171 static oop oop_atomic_xchg_in_heap_at(oop base, ptrdiff_t offset, oop new_value);
172
173 template <typename T>
174 static OopCopyResult oop_arraycopy_in_heap(arrayOop src_obj, size_t src_offset_in_bytes, T* src_raw,
175 arrayOop dst_obj, size_t dst_offset_in_bytes, T* dst_raw,
176 size_t length);
177
178 // Clone barrier support
179 static void clone_in_heap(oop src, oop dst, size_t size);
180
181 // Valhalla support
182 static void value_copy_in_heap(const ValuePayload& src, const ValuePayload& dst);
183 static void value_store_null_in_heap(const ValuePayload& dst);
184
185 // Support for concurrent roots evacuation, updating and weak roots clearing
186 template <typename T>
187 static oop oop_load_not_in_heap(T* addr);
188
189 // Support for concurrent roots marking
190 template <typename T>
191 static void oop_store_not_in_heap(T* addr, oop value);
192
193 template <typename T>
194 static oop oop_atomic_cmpxchg_not_in_heap(T* addr, oop compare_value, oop new_value);
195
196 template <typename T>
197 static oop oop_atomic_xchg_not_in_heap(T* addr, oop new_value);
198 };
199
200 };
201
202 template<>
203 struct BarrierSet::GetName<ShenandoahBarrierSet> {
204 static const BarrierSet::Name value = BarrierSet::ShenandoahBarrierSet;
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