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Code Pull Requests 1 Activity

perftest more idiomatic

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This commit is contained in:
Lawrence Bethlenfalvy
2024-05-03 12:29:57 +02:00
parent bc3b10674b
commit ee823ca3c2
1 changed files with 6 additions and 5 deletions
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11
stdio-perftest/src/main.rs
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@@ -1,6 +1,6 @@
use std::env::{self, args}; use std::env::{self, args};
use std::io::{stdin, BufRead, BufReader, Read, Write}; use std::io::{stdin, BufRead, BufReader, Write};
use std::process::{self, Child}; use std::process;
use std::time::SystemTime; use std::time::SystemTime;
fn main() { fn main() {
@@ -11,7 +11,7 @@ fn main() {
stdin().read_line(&mut input).unwrap(); stdin().read_line(&mut input).unwrap();
if input == "ping\n" { if input == "ping\n" {
println!("pong"); println!("pong");
} else if input.is_empty() { } else if input == "\n" {
process::exit(0); process::exit(0);
} else { } else {
panic!("Unrecognized input {input:?}"); panic!("Unrecognized input {input:?}");
@@ -29,14 +29,15 @@ fn main() {
let mut child_stdin = child.stdin.take().unwrap(); let mut child_stdin = child.stdin.take().unwrap();
let time = SystemTime::now(); let time = SystemTime::now();
for _ in 0..steps { for _ in 0..steps {
writeln!(child_stdin, "ping"); writeln!(child_stdin, "ping").unwrap();
let mut buf = String::new(); let mut buf = String::new();
bufr.read_line(&mut buf).unwrap(); bufr.read_line(&mut buf).unwrap();
if buf != "pong\n" { if buf != "pong\n" {
panic!("Unrecognized output {buf:?}") panic!("Unrecognized output {buf:?}")
} }
} }
child.kill(); writeln!(child_stdin).unwrap();
child.wait().unwrap();
let elapsed = time.elapsed().unwrap(); let elapsed = time.elapsed().unwrap();
let avg = elapsed / steps; let avg = elapsed / steps;
println!("A roundtrip takes {avg:?}, {}ms on average", (avg.as_nanos() as f64) / 1_000_000f64); println!("A roundtrip takes {avg:?}, {}ms on average", (avg.as_nanos() as f64) / 1_000_000f64);