1 #![cfg_attr(stage0, feature(duration_as_u128))]
2 use std::{collections::VecDeque, time::Instant};
4 const VECDEQUE_LEN: i32 = 100000;
5 const WARMUP_N: usize = 100;
6 const BENCH_N: usize = 1000;
9 let a: VecDeque<i32> = (0..VECDEQUE_LEN).collect();
10 let b: VecDeque<i32> = (0..VECDEQUE_LEN).collect();
12 for _ in 0..WARMUP_N {
13 let mut c = a.clone();
14 let mut d = b.clone();
18 let mut durations = Vec::with_capacity(BENCH_N);
21 let mut c = a.clone();
22 let mut d = b.clone();
23 let before = Instant::now();
25 let after = Instant::now();
26 durations.push(after.duration_since(before));
29 let l = durations.len();
32 assert!(BENCH_N % 2 == 0);
33 let median = (durations[(l / 2) - 1] + durations[l / 2]) / 2;
35 "\ncustom-bench vec_deque_append {:?} ns/iter\n",