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#![feature(test)]
extern crate openat;
extern crate test;
use std::fs::read_dir;
use std::str::from_utf8;
use std::os::unix::ffi::OsStrExt;
use test::Bencher;
use openat::Dir;
#[bench]
fn procs_stdlib(b: &mut Bencher) {
b.iter(|| {
read_dir("/proc").unwrap().filter(|r| {
r.as_ref().ok()
.and_then(|e| from_utf8(e.file_name().as_bytes()).ok()
// pid is everything that can be parsed as a number
.and_then(|s| s.parse::<u32>().ok()))
.is_some()
}).count()
});
}
#[bench]
fn procs_openat(b: &mut Bencher) {
b.iter(|| {
Dir::open("/proc").unwrap().list_dir(".").unwrap().filter(|r| {
r.as_ref().ok()
.and_then(|e| from_utf8(e.file_name().as_bytes()).ok()
// pid is everything that can be parsed as a number
.and_then(|s| s.parse::<u32>().ok()))
.is_some()
}).count()
});
}
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