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comparison src/share/vm/memory/barrierSet.hpp @ 14909:4ca6dc0799b6

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Backout jdk9 merge
author Gilles Duboscq <duboscq@ssw.jku.at>
date Tue, 01 Apr 2014 13:57:07 +0200
parents 8a9bb7821e28
children 52b4284cb496
comparison
equal deleted inserted replaced
14908:8db6e76cb658 14909:4ca6dc0799b6
98 virtual void write_ref_field_pre_work( oop* field, oop new_val) {}; 98 virtual void write_ref_field_pre_work( oop* field, oop new_val) {};
99 virtual void write_ref_field_pre_work(narrowOop* field, oop new_val) {}; 99 virtual void write_ref_field_pre_work(narrowOop* field, oop new_val) {};
100 public: 100 public:
101 101
102 // ...then the post-write version. 102 // ...then the post-write version.
103 inline void write_ref_field(void* field, oop new_val, bool release = false); 103 inline void write_ref_field(void* field, oop new_val);
104 protected: 104 protected:
105 virtual void write_ref_field_work(void* field, oop new_val, bool release = false) = 0; 105 virtual void write_ref_field_work(void* field, oop new_val) = 0;
106 public: 106 public:
107 107
108 // Invoke the barrier, if any, necessary when writing the "bytes"-byte 108 // Invoke the barrier, if any, necessary when writing the "bytes"-byte
109 // value(s) "val1" (and "val2") into the primitive "field". 109 // value(s) "val1" (and "val2") into the primitive "field".
110 virtual void write_prim_field(HeapWord* field, size_t bytes, 110 virtual void write_prim_field(HeapWord* field, size_t bytes,
122 virtual bool has_write_prim_array_opt() = 0; 122 virtual bool has_write_prim_array_opt() = 0;
123 123
124 virtual bool has_read_region_opt() = 0; 124 virtual bool has_read_region_opt() = 0;
125 virtual bool has_write_region_opt() = 0; 125 virtual bool has_write_region_opt() = 0;
126 126
127 // These operations should assert false unless the corresponding operation 127 // These operations should assert false unless the correponding operation
128 // above returns true. Otherwise, they should perform an appropriate 128 // above returns true. Otherwise, they should perform an appropriate
129 // barrier for an array whose elements are all in the given memory region. 129 // barrier for an array whose elements are all in the given memory region.
130 virtual void read_ref_array(MemRegion mr) = 0; 130 virtual void read_ref_array(MemRegion mr) = 0;
131 virtual void read_prim_array(MemRegion mr) = 0; 131 virtual void read_prim_array(MemRegion mr) = 0;
132 132
163 // Some barrier sets create tables whose elements correspond to parts of 163 // Some barrier sets create tables whose elements correspond to parts of
164 // the heap; the CardTableModRefBS is an example. Such barrier sets will 164 // the heap; the CardTableModRefBS is an example. Such barrier sets will
165 // normally reserve space for such tables, and commit parts of the table 165 // normally reserve space for such tables, and commit parts of the table
166 // "covering" parts of the heap that are committed. The constructor is 166 // "covering" parts of the heap that are committed. The constructor is
167 // passed the maximum number of independently committable subregions to 167 // passed the maximum number of independently committable subregions to
168 // be covered, and the "resize_covered_region" function allows the 168 // be covered, and the "resize_covoered_region" function allows the
169 // sub-parts of the heap to inform the barrier set of changes of their 169 // sub-parts of the heap to inform the barrier set of changes of their
170 // sizes. 170 // sizes.
171 BarrierSet(int max_covered_regions) : 171 BarrierSet(int max_covered_regions) :
172 _max_covered_regions(max_covered_regions) {} 172 _max_covered_regions(max_covered_regions) {}
173 173