#![feature(test)] extern crate test; use async_std::task; use async_std::task_local; use test::{black_box, Bencher}; #[bench] fn get(b: &mut Bencher) { task_local! { static VAL: u64 = 1; } let mut sum = 0; task::block_on(async { b.iter(|| VAL.with(|v| sum += v)); }); black_box(sum); }