1.1 --- a/src/share/vm/memory/modRefBarrierSet.hpp Wed Jun 04 13:51:09 2008 -0700
1.2 +++ b/src/share/vm/memory/modRefBarrierSet.hpp Thu Jun 05 15:57:56 2008 -0700
1.3 @@ -31,6 +31,13 @@
1.4
1.5 class ModRefBarrierSet: public BarrierSet {
1.6 public:
1.7 +
1.8 + ModRefBarrierSet() { _kind = BarrierSet::ModRef; }
1.9 +
1.10 + bool is_a(BarrierSet::Name bsn) {
1.11 + return bsn == BarrierSet::ModRef;
1.12 + }
1.13 +
1.14 // Barriers only on ref writes.
1.15 bool has_read_ref_barrier() { return false; }
1.16 bool has_read_prim_barrier() { return false; }
1.17 @@ -85,8 +92,10 @@
1.18 bool clear = false,
1.19 bool before_save_marks = false) = 0;
1.20
1.21 - // Causes all refs in "mr" to be assumed to be modified.
1.22 - virtual void invalidate(MemRegion mr) = 0;
1.23 + // Causes all refs in "mr" to be assumed to be modified. If "whole_heap"
1.24 + // is true, the caller asserts that the entire heap is being invalidated,
1.25 + // which may admit an optimized implementation for some barriers.
1.26 + virtual void invalidate(MemRegion mr, bool whole_heap = false) = 0;
1.27
1.28 // The caller guarantees that "mr" contains no references. (Perhaps it's
1.29 // objects have been moved elsewhere.)
