BarrierSetC2
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 #ifndef SHARE_VM_GC_SHARED_MODREFBARRIERSET_HPP
25 #define SHARE_VM_GC_SHARED_MODREFBARRIERSET_HPP
26
27 #include "gc/shared/barrierSet.hpp"
28 #include "memory/memRegion.hpp"
29
30 class Klass;
31
32 class ModRefBarrierSet: public BarrierSet {
33 protected:
34 ModRefBarrierSet(BarrierSetAssembler* barrier_set_assembler,
35 BarrierSetC1* barrier_set_c1,
36 const BarrierSet::FakeRtti& fake_rtti)
37 : BarrierSet(barrier_set_assembler,
38 barrier_set_c1,
39 fake_rtti.add_tag(BarrierSet::ModRef)) { }
40 ~ModRefBarrierSet() { }
41
42 public:
43 template <DecoratorSet decorators, typename T>
44 inline void write_ref_field_pre(T* addr) {}
45
46 template <DecoratorSet decorators, typename T>
47 inline void write_ref_field_post(T *addr, oop new_value) {}
48
49 // Causes all refs in "mr" to be assumed to be modified.
50 virtual void invalidate(MemRegion mr) = 0;
51 virtual void write_region(MemRegion mr) = 0;
52
53 // Operations on arrays, or general regions (e.g., for "clone") may be
54 // optimized by some barriers.
55
56 // Below length is the # array elements being written
57 virtual void write_ref_array_pre(oop* dst, size_t length,
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16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 #ifndef SHARE_VM_GC_SHARED_MODREFBARRIERSET_HPP
25 #define SHARE_VM_GC_SHARED_MODREFBARRIERSET_HPP
26
27 #include "gc/shared/barrierSet.hpp"
28 #include "memory/memRegion.hpp"
29
30 class Klass;
31
32 class ModRefBarrierSet: public BarrierSet {
33 protected:
34 ModRefBarrierSet(BarrierSetAssembler* barrier_set_assembler,
35 BarrierSetC1* barrier_set_c1,
36 BarrierSetC2* barrier_set_c2,
37 const BarrierSet::FakeRtti& fake_rtti)
38 : BarrierSet(barrier_set_assembler,
39 barrier_set_c1,
40 barrier_set_c2,
41 fake_rtti.add_tag(BarrierSet::ModRef)) { }
42 ~ModRefBarrierSet() { }
43
44 public:
45 template <DecoratorSet decorators, typename T>
46 inline void write_ref_field_pre(T* addr) {}
47
48 template <DecoratorSet decorators, typename T>
49 inline void write_ref_field_post(T *addr, oop new_value) {}
50
51 // Causes all refs in "mr" to be assumed to be modified.
52 virtual void invalidate(MemRegion mr) = 0;
53 virtual void write_region(MemRegion mr) = 0;
54
55 // Operations on arrays, or general regions (e.g., for "clone") may be
56 // optimized by some barriers.
57
58 // Below length is the # array elements being written
59 virtual void write_ref_array_pre(oop* dst, size_t length,
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