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Optimize mutex and bin alignment / locality.

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This commit is contained in:
Qi Wang 2023-10-23 13:00:10 -07:00 • committed by Qi Wang
parent e2cd27132a
commit 3025b021b9
3 changed files with 22 additions and 13 deletions
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7
src/arena.c
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@ -1666,11 +1666,16 @@ arena_new(tsdn_t *tsdn, unsigned ind, const arena_config_t *config) {
}
}
size_t arena_size = sizeof(arena_t) + sizeof(bin_t) * nbins_total;
size_t arena_size = ALIGNMENT_CEILING(sizeof(arena_t), CACHELINE) +
sizeof(bin_t) * nbins_total;
arena = (arena_t *)base_alloc(tsdn, base, arena_size, CACHELINE);
if (arena == NULL) {
goto label_error;
}
JEMALLOC_SUPPRESS_WARN_ON_USAGE(
assert((uintptr_t)&arena->all_bins[nbins_total -1] + sizeof(bin_t) <=
(uintptr_t)arena + arena_size);
)
atomic_store_u(&arena->nthreads[0], 0, ATOMIC_RELAXED);
atomic_store_u(&arena->nthreads[1], 0, ATOMIC_RELAXED);