Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/memory/modRefBarrierSet.hpp
src/share/vm/memory/modRefBarrierSet.hpp
- changeset 777
- 37f87013dfd8
- parent 548
- ba764ed4b6f2
- child 791
- 1ee8caae33af
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| 624:0b27f3512f9e | 777:37f87013dfd8 |
|---|---|
| 29 class OopClosure; | 29 class OopClosure; |
| 30 class Generation; | 30 class Generation; |
| 31 | 31 |
| 32 class ModRefBarrierSet: public BarrierSet { | 32 class ModRefBarrierSet: public BarrierSet { |
| 33 public: | 33 public: |
| 34 | |
| 35 ModRefBarrierSet() { _kind = BarrierSet::ModRef; } | |
| 36 | |
| 37 bool is_a(BarrierSet::Name bsn) { | |
| 38 return bsn == BarrierSet::ModRef; | |
| 39 } | |
| 40 | |
| 34 // Barriers only on ref writes. | 41 // Barriers only on ref writes. |
| 35 bool has_read_ref_barrier() { return false; } | 42 bool has_read_ref_barrier() { return false; } |
| 36 bool has_read_prim_barrier() { return false; } | 43 bool has_read_prim_barrier() { return false; } |
| 37 bool has_write_ref_barrier() { return true; } | 44 bool has_write_ref_barrier() { return true; } |
| 38 bool has_write_prim_barrier() { return false; } | 45 bool has_write_prim_barrier() { return false; } |
| 83 // after the last call to "save_marks" on "sp" will not be considered. | 90 // after the last call to "save_marks" on "sp" will not be considered. |
| 84 virtual void mod_oop_in_space_iterate(Space* sp, OopClosure* cl, | 91 virtual void mod_oop_in_space_iterate(Space* sp, OopClosure* cl, |
| 85 bool clear = false, | 92 bool clear = false, |
| 86 bool before_save_marks = false) = 0; | 93 bool before_save_marks = false) = 0; |
| 87 | 94 |
| 88 // Causes all refs in "mr" to be assumed to be modified. | 95 // Causes all refs in "mr" to be assumed to be modified. If "whole_heap" |
| 89 virtual void invalidate(MemRegion mr) = 0; | 96 // is true, the caller asserts that the entire heap is being invalidated, |
| 97 // which may admit an optimized implementation for some barriers. | |
| 98 virtual void invalidate(MemRegion mr, bool whole_heap = false) = 0; | |
| 90 | 99 |
| 91 // The caller guarantees that "mr" contains no references. (Perhaps it's | 100 // The caller guarantees that "mr" contains no references. (Perhaps it's |
| 92 // objects have been moved elsewhere.) | 101 // objects have been moved elsewhere.) |
| 93 virtual void clear(MemRegion mr) = 0; | 102 virtual void clear(MemRegion mr) = 0; |
| 94 | 103 |
