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6923991: G1: improve scalability of RSet scanning

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Implemented block-based work stealing. Moved copying during the rset scanning phase to the main copying phase. Made the size of rset table depend on the region size.

Reviewed-by: apetrusenko, tonyp
This commit is contained in:
Igor Veresov 2010-02-11 15:52:19 -08:00
parent 0356567ed8
commit 52b92d5593
14 changed files with 263 additions and 168 deletions
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10
hotspot/src/share/vm/memory/cardTableModRefBS.hpp
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@ -339,6 +339,16 @@ public:
return (val & (clean_card_mask_val() | claimed_card_val())) == claimed_card_val();
}
void set_card_claimed(size_t card_index) {
jbyte val = _byte_map[card_index];
if (val == clean_card_val()) {
val = (jbyte)claimed_card_val();
} else {
val |= (jbyte)claimed_card_val();
}
_byte_map[card_index] = val;
}
bool claim_card(size_t card_index);
bool is_card_clean(size_t card_index) {