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+version = "0.1.0" +authors = ["abbycin "] +edition = "2018" + +# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html + +[dependencies] +hashbrown = "0.14" +fasthash = "0.4.0" + +[profile.release] +opt-level = 3 +lto = true +debug = false diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..a16beef --- /dev/null +++ b/src/main.rs @@ -0,0 +1,66 @@ +use fasthash::spooky; +use hashbrown::HashSet; +use std::fs::File; +use std::io::{BufReader, BufRead}; +use std::time::Instant; + +fn main() { + let arg: Vec = std::env::args().collect(); + if arg.len() != 2 { + eprintln!("{} numbers.txt", std::env::args().nth(0).unwrap()); + std::process::exit(1); + } + let name = &arg[1]; + let f = File::open(name).expect("file can't open"); + let reader = BufReader::new(f); + let v: Vec = reader.lines().map(|x| x.unwrap().parse::().unwrap()).collect(); + + { + let mut h = HashSet::with_hasher(spooky::Hash64); + + bench_swiss(&v, &mut h, true); + bench_swiss(&v, &mut h, false); + } + + { + let mut h = std::collections::HashSet::with_hasher(spooky::Hash64); + + bench_std(&v, &mut h, true); + bench_std(&v, &mut h, false); + } + +} + +fn bench_swiss(v: &Vec, h: &mut HashSet, ins: bool) { + let now = Instant::now(); + + if ins { + for i in v { + h.insert(*i); + } + } else { + for i in v { + h.contains(i); + } + } + + let elapsed = now.elapsed().as_millis(); + println!("swiss {} => {}ms", if ins { "insert" } else { "search" }, elapsed); +} + +fn bench_std(v: &Vec, h: &mut std::collections::HashSet, ins: bool) { + let now = Instant::now(); + + if ins { + for i in v { + h.insert(*i); + } + } else { + for i in v { + h.contains(i); + } + } + + let elapsed = now.elapsed().as_millis(); + println!("std {} => {}ms", if ins { "insert" } else { "search" }, elapsed); +}