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8011724: G1: Stack allocate instances of HeapRegionRemSetIterator

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Stack allocate instances of HeapRegionRemSetIterator during RSet scanning.

Reviewed-by: brutisso, jwilhelm
This commit is contained in:
John Cuthbertson 2013-04-18 10:09:23 -07:00
parent c47ec9b4ca
commit eafc00bc25
8 changed files with 38 additions and 92 deletions
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21
hotspot/src/share/vm/gc_implementation/g1/sparsePRT.hpp
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@ -192,18 +192,11 @@ class RSHashTableIter VALUE_OBJ_CLASS_SPEC {
size_t compute_card_ind(CardIdx_t ci);
public:
RSHashTableIter() :
_tbl_ind(RSHashTable::NullEntry),
RSHashTableIter(RSHashTable* rsht) :
_tbl_ind(RSHashTable::NullEntry), // So that first increment gets to 0.
_bl_ind(RSHashTable::NullEntry),
_card_ind((SparsePRTEntry::cards_num() - 1)),
_rsht(NULL) {}
void init(RSHashTable* rsht) {
_rsht = rsht;
_tbl_ind = -1; // So that first increment gets to 0.
_bl_ind = RSHashTable::NullEntry;
_card_ind = (SparsePRTEntry::cards_num() - 1);
}
_rsht(rsht) {}
bool has_next(size_t& card_index);
};
@ -284,8 +277,6 @@ public:
static void cleanup_all();
RSHashTable* cur() const { return _cur; }
void init_iterator(SparsePRTIter* sprt_iter);
static void add_to_expanded_list(SparsePRT* sprt);
static SparsePRT* get_from_expanded_list();
@ -321,9 +312,9 @@ public:
class SparsePRTIter: public RSHashTableIter {
public:
void init(const SparsePRT* sprt) {
RSHashTableIter::init(sprt->cur());
}
SparsePRTIter(const SparsePRT* sprt) :
RSHashTableIter(sprt->cur()) {}
bool has_next(size_t& card_index) {
return RSHashTableIter::has_next(card_index);
}