test.rs

#![feature(test)]
extern crate test;
extern crate zerocopy;
use zerocopy::zc::ZeroCopy;
use test::Bencher;
use std::io::prelude::*;
use std::fs::File;
#[bench]
fn zerocopy(b: &mut Bencher) {
    let mut src = File::open("/tmp/foo").unwrap();
    let mut dest = File::create("/tmp/foo.txt").unwrap();
    b.iter(|| {
        unsafe { src.copy_to_fd(&mut dest).unwrap() };
        src.seek(::std::io::SeekFrom::Start(0));
    });
    std::fs::remove_file("/tmp/foo.txt");

}
#[bench]
fn default(b: &mut Bencher) {
    let mut src = File::open("/tmp/foo").unwrap();
    let mut dest = File::create("/tmp/foo.txt").unwrap();
    let len = src.metadata().unwrap().len() as usize;

    b.iter(|| {
        ::std::io::copy(&mut src, &mut dest).unwrap();
        src.seek(::std::io::SeekFrom::Start(0));
        

    });
    std::fs::remove_file("/tmp/foo.txt");
}