36 lines
2.1 KiB
Rust
36 lines
2.1 KiB
Rust
#![feature(generic_const_exprs)]
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use criterion::{black_box, criterion_group, criterion_main, Criterion};
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use fast_hex::*;
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const ASCII_BYTES: &[u8; 16] = b"Donald J. Trump!";
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const HEX_BYTES: &[u8; ASCII_BYTES.len() * 2] = b"446F6E616C64204A2E205472756D7021";
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const ASCII_BYTES_LONG: &[u8; 256] = b"Donald J. Trump!Donald J. Trump!Donald J. Trump!Donald J. Trump!Donald J. Trump!Donald J. Trump!Donald J. Trump!Donald J. Trump!Donald J. Trump!Donald J. Trump!Donald J. Trump!Donald J. Trump!Donald J. Trump!Donald J. Trump!Donald J. Trump!Donald J. Trump!";
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const HEX_BYTES_LONG: &[u8; ASCII_BYTES_LONG.len() * 2] = b"446F6E616C64204A2E205472756D7021446F6E616C64204A2E205472756D7021446F6E616C64204A2E205472756D7021446F6E616C64204A2E205472756D7021446F6E616C64204A2E205472756D7021446F6E616C64204A2E205472756D7021446F6E616C64204A2E205472756D7021446F6E616C64204A2E205472756D7021446F6E616C64204A2E205472756D7021446F6E616C64204A2E205472756D7021446F6E616C64204A2E205472756D7021446F6E616C64204A2E205472756D7021446F6E616C64204A2E205472756D7021446F6E616C64204A2E205472756D7021446F6E616C64204A2E205472756D7021446F6E616C64204A2E205472756D7021";
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fn benchmark<const N: usize>(bytes: &[u8; N * 2]) -> impl FnOnce(&mut Criterion) -> () + '_
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where
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[(); N * 2]:
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{
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|c| {
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c.bench_function("sized", |b| b.iter(|| hex_bytes::<N>(black_box(bytes))));
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c.bench_function("dyn unsafe", |b| b.iter(|| hex_bytes_dyn_unsafe(black_box(bytes))));
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c.bench_function("dyn unsafe for", |b| b.iter(|| hex_bytes_dyn_unsafe_for(black_box(bytes))));
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c.bench_function("dyn unsafe iter", |b| b.iter(|| hex_bytes_dyn_unsafe_iter(black_box(bytes))));
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c.bench_function("dyn non-niched", |b| b.iter(|| hex_bytes_dyn(black_box(bytes))));
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c.bench_function("dyn niched", |b| b.iter(|| hex_bytes_dyn_niched(black_box(bytes))));
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}
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}
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pub fn bench_16(c: &mut Criterion) {
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benchmark::<{ ASCII_BYTES.len() }>(HEX_BYTES)(c)
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}
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pub fn bench_256(c: &mut Criterion) {
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benchmark::<{ ASCII_BYTES_LONG.len() }>(HEX_BYTES_LONG)(c)
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}
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criterion_group!(benches, bench_16, bench_256);
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criterion_main!(benches);
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