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[set] Allocate first page exact

This commit is contained in:
Behdad Esfahbod 2023-01-05 14:08:47 -07:00
parent 0b7f6d6cf0
commit 207ae11ab9
1 changed files with 4 additions and 0 deletions
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4
src/hb-bit-set.hh
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@ -88,6 +88,10 @@ struct hb_bit_set_t
bool resize (unsigned int count, bool clear = true, bool exact_size = false) bool resize (unsigned int count, bool clear = true, bool exact_size = false)
{ {
if (unlikely (!successful)) return false; if (unlikely (!successful)) return false;
if (pages.length == 0 && count == 1)
exact_size = true; // Most sets are small and local
if (unlikely (!pages.resize (count, clear, exact_size) || !page_map.resize (count, clear, exact_size))) if (unlikely (!pages.resize (count, clear, exact_size) || !page_map.resize (count, clear, exact_size)))
{ {
pages.resize (page_map.length, clear, exact_size); pages.resize (page_map.length, clear, exact_size);