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comparison src/share/vm/memory/cardTableRS.cpp @ 6:73e96e5c30df

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6624765: Guarantee failure "Unexpected dirty card found" Summary: In verification take into account partial coverage of a region by a card and expansion of the card table. Reviewed-by: ysr, apetrusenko
author jmasa
date Fri, 15 Feb 2008 07:01:10 -0800
parents a61af66fc99e
children ba764ed4b6f2
comparison
equal deleted inserted replaced
5:f21b879b4c72 6:73e96e5c30df
554 VerifyCTSpaceClosure perm_space_blk(this, pg_boundary); 554 VerifyCTSpaceClosure perm_space_blk(this, pg_boundary);
555 SharedHeap::heap()->perm_gen()->space_iterate(&perm_space_blk, true); 555 SharedHeap::heap()->perm_gen()->space_iterate(&perm_space_blk, true);
556 } 556 }
557 557
558 558
559 void CardTableRS::verify_empty(MemRegion mr) { 559 void CardTableRS::verify_aligned_region_empty(MemRegion mr) {
560 if (!mr.is_empty()) { 560 if (!mr.is_empty()) {
561 jbyte* cur_entry = byte_for(mr.start()); 561 jbyte* cur_entry = byte_for(mr.start());
562 jbyte* limit = byte_after(mr.last()); 562 jbyte* limit = byte_after(mr.last());
563 // The region mr may not start on a card boundary so
564 // the first card may reflect a write to the space
565 // just prior to mr.
566 if (!is_aligned(mr.start())) {
567 cur_entry++;
568 }
563 for (;cur_entry < limit; cur_entry++) { 569 for (;cur_entry < limit; cur_entry++) {
564 guarantee(*cur_entry == CardTableModRefBS::clean_card, 570 guarantee(*cur_entry == CardTableModRefBS::clean_card,
565 "Unexpected dirty card found"); 571 "Unexpected dirty card found");
566 } 572 }
567 } 573 }