BALANCE_ALPHA_INV_2POW 3473 libbase/jemalloc.c * (uint64_t)((1U << BALANCE_ALPHA_INV_2POW)-1)) BALANCE_ALPHA_INV_2POW 3474 libbase/jemalloc.c + (uint64_t)contention) >> BALANCE_ALPHA_INV_2POW;