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#![feature(test)]
extern crate test;
use scroll::{Cread, Pread, LE};
use test::black_box;
#[bench]
fn bench_parallel_cread_with(b: &mut test::Bencher) {
use rayon::prelude::*;
let vec = vec![0u8; 1_000_000];
let nums = vec![0usize; 500_000];
b.iter(|| {
let data = black_box(&vec[..]);
nums.par_iter().for_each(|offset| {
let _: u16 = black_box(data.cread_with(*offset, LE));
});
});
b.bytes = vec.len() as u64;
}
#[bench]
fn bench_cread_vec(b: &mut test::Bencher) {
let vec = vec![0u8; 1_000_000];
b.iter(|| {
let data = black_box(&vec[..]);
for val in data.chunks(2) {
let _: u16 = black_box(val.cread_with(0, LE));
}
});
b.bytes = vec.len() as u64;
}
#[bench]
fn bench_cread(b: &mut test::Bencher) {
const NITER: i32 = 100_000;
b.iter(|| {
for _ in 1..NITER {
let data = black_box([1, 2]);
let _: u16 = black_box(data.cread(0));
}
});
b.bytes = 2 * NITER as u64;
}
#[bench]
fn bench_pread_ctx_vec(b: &mut test::Bencher) {
let vec = vec![0u8; 1_000_000];
b.iter(|| {
let data = black_box(&vec[..]);
for val in data.chunks(2) {
let _: Result<u16, _> = black_box(val.pread(0));
}
});
b.bytes = vec.len() as u64;
}
#[bench]
fn bench_pread_with_unwrap(b: &mut test::Bencher) {
const NITER: i32 = 100_000;
b.iter(|| {
for _ in 1..NITER {
let data: &[u8] = &black_box([1, 2]);
let _: u16 = black_box(data.pread_with(0, LE).unwrap());
}
});
b.bytes = 2 * NITER as u64;
}
#[bench]
fn bench_pread_vec(b: &mut test::Bencher) {
let vec = vec![0u8; 1_000_000];
b.iter(|| {
let data = black_box(&vec[..]);
for val in data.chunks(2) {
let _: Result<u16, _> = black_box(val.pread_with(0, LE));
}
});
b.bytes = vec.len() as u64;
}
#[bench]
fn bench_pread_unwrap(b: &mut test::Bencher) {
const NITER: i32 = 100_000;
b.iter(|| {
for _ in 1..NITER {
let data = black_box([1, 2]);
let _: u16 = black_box(data.pread(0)).unwrap();
}
});
b.bytes = 2 * NITER as u64;
}
#[bench]
fn bench_gread_vec(b: &mut test::Bencher) {
let vec = vec![0u8; 1_000_000];
b.iter(|| {
let data = black_box(&vec[..]);
for val in data.chunks(2) {
let mut offset = 0;
let _: Result<u16, _> = black_box(val.gread(&mut offset));
}
});
b.bytes = vec.len() as u64;
}
#[bench]
fn bench_gread_unwrap(b: &mut test::Bencher) {
const NITER: i32 = 100_000;
b.iter(|| {
for _ in 1..NITER {
let data = black_box([1, 2]);
let mut offset = 0;
let _: u16 = black_box(data.gread_with(&mut offset, LE).unwrap());
}
});
b.bytes = 2 * NITER as u64;
}
#[bench]
fn bench_parallel_pread_with(b: &mut test::Bencher) {
use rayon::prelude::*;
let vec = vec![0u8; 1_000_000];
let nums = vec![0usize; 500_000];
b.iter(|| {
let data = black_box(&vec[..]);
nums.par_iter().for_each(|offset| {
let _: Result<u16, _> = black_box(data.pread_with(*offset, LE));
});
});
b.bytes = vec.len() as u64;
}
#[bench]
fn bench_byteorder_vec(b: &mut test::Bencher) {
use byteorder::ReadBytesExt;
let vec = vec![0u8; 1_000_000];
b.iter(|| {
let data = black_box(&vec[..]);
for mut val in data.chunks(2) {
let _: Result<u16, _> = black_box(val.read_u16::<byteorder::LittleEndian>());
}
});
b.bytes = vec.len() as u64;
}
#[bench]
fn bench_byteorder(b: &mut test::Bencher) {
use byteorder::ByteOrder;
const NITER: i32 = 100_000;
b.iter(|| {
for _ in 1..NITER {
let data = black_box([1, 2]);
let _: u16 = black_box(byteorder::LittleEndian::read_u16(&data));
}
});
b.bytes = 2 * NITER as u64;
}
|
