38 lines
948 B
Rust
38 lines
948 B
Rust
|
use std::{collections::VecDeque, time::Instant};
|
||
|
|
|
||
|
|
const VECDEQUE_LEN: i32 = 100000;
|
||
|
|
const WARMUP_N: usize = 100;
|
||
|
|
const BENCH_N: usize = 1000;
|
||
|
|
|
||
|
|
fn main() {
|
||
|
|
let a: VecDeque<i32> = (0..VECDEQUE_LEN).collect();
|
||
|
|
let b: VecDeque<i32> = (0..VECDEQUE_LEN).collect();
|
||
|
|
|
||
|
|
for _ in 0..WARMUP_N {
|
||
|
|
let mut c = a.clone();
|
||
|
|
let mut d = b.clone();
|
||
|
|
c.append(&mut d);
|
||
|
|
}
|
||
|
|
|
||
|
|
let mut durations = Vec::with_capacity(BENCH_N);
|
||
|
|
|
||
|
|
for _ in 0..BENCH_N {
|
||
|
|
let mut c = a.clone();
|
||
|
|
let mut d = b.clone();
|
||
|
|
let before = Instant::now();
|
||
|
|
c.append(&mut d);
|
||
|
|
let after = Instant::now();
|
||
|
|
durations.push(after.duration_since(before));
|
||
|
|
}
|
||
|
|
|
||
|
|
let l = durations.len();
|
||
|
|
durations.sort();
|
||
|
|
|
||
|
|
assert!(BENCH_N % 2 == 0);
|
||
|
|
let median = (durations[(l / 2) - 1] + durations[l / 2]) / 2;
|
||
|
|
println!(
|
||
|
|
"\ncustom-bench vec_deque_append {:?} ns/iter\n",
|
||
|
|
median.as_nanos()
|
||
|
|
);
|
||
|
|
}
|