8069016: Add BarrierSet downcast support
Add FakeRttiSupport utility and use to provide barrier_set_cast.
Reviewed-by: jmasa, sangheki
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.hpp b/hotspot/src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.hpp
index 98c8b65..c307815 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.hpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.hpp
@@ -43,7 +43,7 @@
g1_young_gen = CT_MR_BS_last_reserved << 1
};
- G1SATBCardTableModRefBS(MemRegion whole_heap, BarrierSet::Name kind);
+ G1SATBCardTableModRefBS(MemRegion whole_heap, const BarrierSet::FakeRtti& fake_rtti);
~G1SATBCardTableModRefBS() { }
public:
@@ -53,10 +53,6 @@
// pre-marking object graph.
static void enqueue(oop pre_val);
- bool is_a(BarrierSet::Name bsn) {
- return bsn == BarrierSet::G1SATBCT || CardTableModRefBS::is_a(bsn);
- }
-
virtual bool has_write_ref_pre_barrier() { return true; }
// This notes that we don't need to access any BarrierSet data
@@ -128,6 +124,11 @@
}
};
+template<>
+struct BarrierSet::GetName<G1SATBCardTableModRefBS> {
+ static const BarrierSet::Name value = BarrierSet::G1SATBCT;
+};
+
class G1SATBCardTableLoggingModRefBSChangedListener : public G1MappingChangedListener {
private:
G1SATBCardTableLoggingModRefBS* _card_table;
@@ -159,11 +160,6 @@
virtual void resize_covered_region(MemRegion new_region) { ShouldNotReachHere(); }
- bool is_a(BarrierSet::Name bsn) {
- return bsn == BarrierSet::G1SATBCTLogging ||
- G1SATBCardTableModRefBS::is_a(bsn);
- }
-
void write_ref_field_work(void* field, oop new_val, bool release = false);
// Can be called from static contexts.
@@ -177,4 +173,9 @@
void write_ref_array_work(MemRegion mr) { invalidate(mr); }
};
+template<>
+struct BarrierSet::GetName<G1SATBCardTableLoggingModRefBS> {
+ static const BarrierSet::Name value = BarrierSet::G1SATBCTLogging;
+};
+
#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1SATBCARDTABLEMODREFBS_HPP