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Hide bin slab-locality query behind arena_locality_hint

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bin_t is an arena implementation detail; tcache should not reach into
it. Extract the slab-address lookup into bin.c as bin_current_slab_addr,
and expose it to tcache only through arena_locality_hint(tsdn, arena,
szind), which composes bin_choose + bin_current_slab_addr.
This commit is contained in:
Slobodan Predolac 2026-05-05 10:00:04 -07:00
parent e286fba00a
commit 3c1c6ae419
6 changed files with 71 additions and 23 deletions
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8
src/arena.c
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@ -211,6 +211,14 @@ arena_stats_merge(tsdn_t *tsdn, arena_t *arena, unsigned *nthreads,
}
}
void *
arena_locality_hint(tsdn_t *tsdn, arena_t *arena, szind_t szind) {
assert(szind < SC_NBINS);
bin_t *bin = bin_choose(tsdn, arena, szind, NULL);
assert(bin != NULL);
return bin_current_slab_addr(tsdn, bin);
}
static void
arena_background_thread_inactivity_check(
tsdn_t *tsdn, arena_t *arena, bool is_background_thread) {