43 return bsn == BarrierSet::ModRef;
44 }
45
46 // Barriers only on ref writes.
47 bool has_read_ref_barrier() { return false; }
48 bool has_read_prim_barrier() { return false; }
49 bool has_write_ref_barrier() { return true; }
50 bool has_write_prim_barrier() { return false; }
51
52 bool read_ref_needs_barrier(void* field) { return false; }
53 bool read_prim_needs_barrier(HeapWord* field, size_t bytes) { return false; }
54 bool write_prim_needs_barrier(HeapWord* field, size_t bytes,
55 juint val1, juint val2) { return false; }
56
57 void write_prim_field(oop obj, size_t offset, size_t bytes,
58 juint val1, juint val2) {}
59
60 void read_ref_field(void* field) {}
61 void read_prim_field(HeapWord* field, size_t bytes) {}
62 protected:
63 virtual void write_ref_field_work(void* field, oop new_val) = 0;
64 public:
65 void write_prim_field(HeapWord* field, size_t bytes,
66 juint val1, juint val2) {}
67
68 bool has_read_ref_array_opt() { return false; }
69 bool has_read_prim_array_opt() { return false; }
70 bool has_write_prim_array_opt() { return false; }
71
72 bool has_read_region_opt() { return false; }
73
74
75 // These operations should assert false unless the correponding operation
76 // above returns true.
77 void read_ref_array(MemRegion mr) {
78 assert(false, "can't call");
79 }
80 void read_prim_array(MemRegion mr) {
81 assert(false, "can't call");
82 }
83 void write_prim_array(MemRegion mr) {
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43 return bsn == BarrierSet::ModRef;
44 }
45
46 // Barriers only on ref writes.
47 bool has_read_ref_barrier() { return false; }
48 bool has_read_prim_barrier() { return false; }
49 bool has_write_ref_barrier() { return true; }
50 bool has_write_prim_barrier() { return false; }
51
52 bool read_ref_needs_barrier(void* field) { return false; }
53 bool read_prim_needs_barrier(HeapWord* field, size_t bytes) { return false; }
54 bool write_prim_needs_barrier(HeapWord* field, size_t bytes,
55 juint val1, juint val2) { return false; }
56
57 void write_prim_field(oop obj, size_t offset, size_t bytes,
58 juint val1, juint val2) {}
59
60 void read_ref_field(void* field) {}
61 void read_prim_field(HeapWord* field, size_t bytes) {}
62 protected:
63 virtual void write_ref_field_work(void* field, oop new_val, bool release = false) = 0;
64 public:
65 void write_prim_field(HeapWord* field, size_t bytes,
66 juint val1, juint val2) {}
67
68 bool has_read_ref_array_opt() { return false; }
69 bool has_read_prim_array_opt() { return false; }
70 bool has_write_prim_array_opt() { return false; }
71
72 bool has_read_region_opt() { return false; }
73
74
75 // These operations should assert false unless the correponding operation
76 // above returns true.
77 void read_ref_array(MemRegion mr) {
78 assert(false, "can't call");
79 }
80 void read_prim_array(MemRegion mr) {
81 assert(false, "can't call");
82 }
83 void write_prim_array(MemRegion mr) {
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