60 static bool need_load_reference_barrier(DecoratorSet decorators, BasicType type);
61 static bool use_load_reference_barrier_native(DecoratorSet decorators, BasicType type);
62 static bool need_keep_alive_barrier(DecoratorSet decorators, BasicType type);
63
64 void print_on(outputStream* st) const;
65
66 bool is_a(BarrierSet::Name bsn);
67
68 bool is_aligned(HeapWord* hw);
69
70 template <class T> void
71 write_ref_array_pre_work(T* src, T* dst, size_t count, bool dest_uninitialized);
72
73 inline void arraycopy_pre(oop* src, oop* dst, size_t count);
74 inline void arraycopy_pre(narrowOop* src, narrowOop* dst, size_t count);
75 inline void arraycopy_update(oop* src, size_t count);
76 inline void arraycopy_update(narrowOop* src, size_t count);
77 inline void clone_barrier(oop src);
78 void clone_barrier_runtime(oop src);
79
80 // We export this to make it available in cases where the static
81 // type of the barrier set is known. Note that it is non-virtual.
82 template <class T> inline void inline_write_ref_field_pre(T* field, oop new_val);
83
84 // These are the more general virtual versions.
85 void write_ref_field_pre_work(oop* field, oop new_val);
86 void write_ref_field_pre_work(narrowOop* field, oop new_val);
87 void write_ref_field_pre_work(void* field, oop new_val);
88
89 void write_ref_field_work(void* v, oop o, bool release = false);
90
91 virtual void on_thread_create(Thread* thread);
92 virtual void on_thread_destroy(Thread* thread);
93 virtual void on_thread_attach(Thread* thread);
94 virtual void on_thread_detach(Thread* thread);
95
96 static inline oop resolve_forwarded_not_null(oop p);
97 static inline oop resolve_forwarded(oop p);
98
99 void storeval_barrier(oop obj);
100 void keep_alive_barrier(oop obj);
101
102 oop load_reference_barrier(oop obj);
103 oop load_reference_barrier_not_null(oop obj);
104
105 oop load_reference_barrier_mutator(oop obj, oop* load_addr);
106 oop load_reference_barrier_mutator(oop obj, narrowOop* load_addr);
107
108 template <class T>
109 oop load_reference_barrier_mutator_work(oop obj, T* load_addr);
110
111 oop load_reference_barrier_native(oop obj, oop* load_addr);
112 oop load_reference_barrier_native(oop obj, narrowOop* load_addr);
113
114 void enqueue(oop obj);
115
116 private:
117 template <class T>
118 inline void arraycopy_pre_work(T* src, T* dst, size_t count);
119 template <class T, bool HAS_FWD, bool EVAC, bool ENQUEUE>
120 inline void arraycopy_work(T* src, size_t count);
121 template <class T>
122 inline void arraycopy_update_impl(T* src, size_t count);
123
124 oop load_reference_barrier_impl(oop obj);
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);
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60 static bool need_load_reference_barrier(DecoratorSet decorators, BasicType type);
61 static bool use_load_reference_barrier_native(DecoratorSet decorators, BasicType type);
62 static bool need_keep_alive_barrier(DecoratorSet decorators, BasicType type);
63
64 void print_on(outputStream* st) const;
65
66 bool is_a(BarrierSet::Name bsn);
67
68 bool is_aligned(HeapWord* hw);
69
70 template <class T> void
71 write_ref_array_pre_work(T* src, T* dst, size_t count, bool dest_uninitialized);
72
73 inline void arraycopy_pre(oop* src, oop* dst, size_t count);
74 inline void arraycopy_pre(narrowOop* src, narrowOop* dst, size_t count);
75 inline void arraycopy_update(oop* src, size_t count);
76 inline void arraycopy_update(narrowOop* src, size_t count);
77 inline void clone_barrier(oop src);
78 void clone_barrier_runtime(oop src);
79
80 virtual void on_thread_create(Thread* thread);
81 virtual void on_thread_destroy(Thread* thread);
82 virtual void on_thread_attach(Thread* thread);
83 virtual void on_thread_detach(Thread* thread);
84
85 static inline oop resolve_forwarded_not_null(oop p);
86 static inline oop resolve_forwarded(oop p);
87
88 template <DecoratorSet decorators, typename T>
89 inline void satb_barrier(T* field);
90 inline void satb_enqueue(oop value);
91 inline void storeval_barrier(oop obj);
92
93 template <DecoratorSet decorators>
94 inline void keep_alive_if_weak(oop value);
95 inline void keep_alive_if_weak(DecoratorSet decorators, oop value);
96 inline void keep_alive_barrier(oop value);
97
98 inline void enqueue(oop obj);
99
100 oop load_reference_barrier(oop obj);
101 oop load_reference_barrier_not_null(oop obj);
102
103 oop load_reference_barrier_mutator(oop obj, oop* load_addr);
104 oop load_reference_barrier_mutator(oop obj, narrowOop* load_addr);
105
106 template <class T>
107 oop load_reference_barrier_mutator_work(oop obj, T* load_addr);
108
109 oop load_reference_barrier_native(oop obj, oop* load_addr);
110 oop load_reference_barrier_native(oop obj, narrowOop* load_addr);
111
112 private:
113 template <class T>
114 inline void arraycopy_pre_work(T* src, T* dst, size_t count);
115 template <class T, bool HAS_FWD, bool EVAC, bool ENQUEUE>
116 inline void arraycopy_work(T* src, size_t count);
117 template <class T>
118 inline void arraycopy_update_impl(T* src, size_t count);
119
120 oop load_reference_barrier_impl(oop obj);
121
122 template <class T>
123 oop load_reference_barrier_native_impl(oop obj, T* load_addr);
124
125 public:
126 // Callbacks for runtime accesses.
127 template <DecoratorSet decorators, typename BarrierSetT = ShenandoahBarrierSet>
128 class AccessBarrier: public BarrierSet::AccessBarrier<decorators, BarrierSetT> {
129 typedef BarrierSet::AccessBarrier<decorators, BarrierSetT> Raw;
130
131 public:
132 // Heap oop accesses. These accessors get resolved when
133 // IN_HEAP is set (e.g. when using the HeapAccess API), it is
134 // an oop_* overload, and the barrier strength is AS_NORMAL.
135 template <typename T>
136 static oop oop_load_in_heap(T* addr);
137 static oop oop_load_in_heap_at(oop base, ptrdiff_t offset);
138
139 template <typename T>
140 static void oop_store_in_heap(T* addr, oop value);
141 static void oop_store_in_heap_at(oop base, ptrdiff_t offset, oop value);
142
143 template <typename T>
144 static oop oop_atomic_cmpxchg_in_heap(T* addr, oop compare_value, oop new_value);
145 static oop oop_atomic_cmpxchg_in_heap_at(oop base, ptrdiff_t offset, oop compare_value, oop new_value);
146
147 template <typename T>
148 static oop oop_atomic_xchg_in_heap(T* addr, oop new_value);
149 static oop oop_atomic_xchg_in_heap_at(oop base, ptrdiff_t offset, oop new_value);
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