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6841313: G1: dirty cards of survivor regions in parallel

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Reviewed-by: tonyp, iveresov
This commit is contained in:
Andrey Petrusenko 2009-08-31 05:27:29 -07:00
parent e7c70c499b
commit 2491751525
4 changed files with 91 additions and 13 deletions
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23
hotspot/src/share/vm/memory/cardTableModRefBS.cpp
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@ -660,6 +660,29 @@ void CardTableModRefBS::verify_clean_region(MemRegion mr) {
GuaranteeNotModClosure blk(this);
non_clean_card_iterate_work(mr, &blk, false);
}
// To verify a MemRegion is entirely dirty this closure is passed to
// dirty_card_iterate. If the region is dirty do_MemRegion will be
// invoked only once with a MemRegion equal to the one being
// verified.
class GuaranteeDirtyClosure: public MemRegionClosure {
CardTableModRefBS* _ct;
MemRegion _mr;
bool _result;
public:
GuaranteeDirtyClosure(CardTableModRefBS* ct, MemRegion mr)
: _ct(ct), _mr(mr), _result(false) {}
void do_MemRegion(MemRegion mr) {
_result = _mr.equals(mr);
}
bool result() const { return _result; }
};
void CardTableModRefBS::verify_dirty_region(MemRegion mr) {
GuaranteeDirtyClosure blk(this, mr);
dirty_card_iterate(mr, &blk);
guarantee(blk.result(), "Non-dirty cards in region that should be dirty");
}
#endif
bool CardTableModRefBSForCTRS::card_will_be_scanned(jbyte cv) {