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avoid cloning in bencher #67

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Merged
merged 2 commits into from
Dec 2, 2024
Merged

avoid cloning in bencher #67

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83ab2d7
Update runner.rs
asibahi Dec 2, 2024
16f80de
Update src/template/runner.rs
asibahi Dec 2, 2024
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12 changes: 4 additions & 8 deletions src/template/runner.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@ use std::{cmp, env, process};
use crate::template::ANSI_BOLD;
use crate::template::{aoc_cli, Day, ANSI_ITALIC, ANSI_RESET};

pub fn run_part<I: Clone, T: Display>(func: impl Fn(I) -> Option<T>, input: I, day: Day, part: u8) {
pub fn run_part<I: Copy, T: Display>(func: impl Fn(I) -> Option<T>, input: I, day: Day, part: u8) {
let part_str = format!("Part {part}");

let (result, duration, samples) =
Expand All @@ -25,15 +25,13 @@ pub fn run_part<I: Clone, T: Display>(func: impl Fn(I) -> Option<T>, input: I, d
/// Run a solution part. The behavior differs depending on whether we are running a release or debug build:
/// 1. in debug, the function is executed once.
/// 2. in release, the function is benched (approx. 1 second of execution time or 10 samples, whatever take longer.)
fn run_timed<I: Clone, T>(
fn run_timed<I: Copy, T>(
func: impl Fn(I) -> T,
input: I,
hook: impl Fn(&T),
) -> (T, Duration, u128) {
let timer = Instant::now();
let result = {
let input = input.clone();

#[cfg(feature = "dhat-heap")]
let _profiler = dhat::Profiler::new_heap();

Expand All @@ -52,7 +50,7 @@ fn run_timed<I: Clone, T>(
(result, run.0, run.1)
}

fn bench<I: Clone, T>(func: impl Fn(I) -> T, input: I, base_time: &Duration) -> (Duration, u128) {
fn bench<I: Copy, T>(func: impl Fn(I) -> T, input: I, base_time: &Duration) -> (Duration, u128) {
let mut stdout = stdout();

print!(" > {ANSI_ITALIC}benching{ANSI_RESET}");
Expand All @@ -64,10 +62,8 @@ fn bench<I: Clone, T>(func: impl Fn(I) -> T, input: I, base_time: &Duration) ->
let mut timers: Vec<Duration> = vec![];

for _ in 0..bench_iterations {
// need a clone here to make the borrow checker happy.
let cloned = input.clone();
let timer = Instant::now();
black_box(func(black_box(cloned)));
black_box(func(black_box(input)));
timers.push(timer.elapsed());
}

Expand Down