Function extents_alloc

app/redis-6.2.6/deps/jemalloc/src/extent.c:501–514

}

extent_t *
extents_alloc(tsdn_t *tsdn, arena_t *arena, extent_hooks_t **r_extent_hooks,
    extents_t *extents, void *new_addr, size_t size, size_t pad,
    size_t alignment, bool slab, szind_t szind, bool *zero, bool *commit) {
	assert(size + pad != 0);
	assert(alignment != 0);
	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
	    WITNESS_RANK_CORE, 0);

	extent_t *extent = extent_recycle(tsdn, arena, r_extent_hooks, extents,
	    new_addr, size, pad, alignment, slab, szind, zero, commit, false);
	assert(extent == NULL || extent_dumpable_get(extent));
	return extent;
}

void
extents_dalloc(tsdn_t *tsdn, arena_t *arena, extent_hooks_t **r_extent_hooks,