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improve interaction of slot rand with slot mask

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Daniel Micay 2018-08-25 18:04:55 -04:00
parent 173dd6e7a5
commit c5d76179a5
1 changed files with 1 additions and 1 deletions
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malloc.c
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@ -257,7 +257,7 @@ static size_t get_free_slot(struct random_state *rng, size_t slots, struct slab_
} }
// randomize start location for linear search (uniform random choice is too slow) // randomize start location for linear search (uniform random choice is too slow)
uint64_t random_split = ~0UL >> get_random_size_uniform(rng, slots); uint64_t random_split = ~(~0UL << get_random_size_uniform(rng, slots));
size_t slot = ffzl(masked | random_split); size_t slot = ffzl(masked | random_split);
if (slot) { if (slot) {