moved sleep function to lib.rs

V2/sleep/src/main.rs

@@ -1,6 +1,6 @@
 #![feature(step_by)]
 extern crate argparse;
-extern crate libc;
+extern crate sleep;
 extern crate time;
 
 use std::io::prelude::*;
@@ -9,36 +9,9 @@ use std::path::Path;
 use std::time::Duration;
 
 use argparse::{ArgumentParser, Print, Store};
-use libc::{c_long, clock_nanosleep, time_t, timespec};
+use sleep::sleep;
 use time::precise_time_ns;
 
-const CLOCK_MONOTONIC: i32 = 1;
-
-pub fn sleep(duration: Duration) -> Option<Duration> {
-    let ts = duration_to_timespec(duration);
-    let mut remain = timespec {
-        tv_sec: 0,
-        tv_nsec: 0,
-    };
-    let ret = unsafe { clock_nanosleep(CLOCK_MONOTONIC, 0, &ts, &mut remain) };
-    println!("ret = {}", ret);
-    if remain.tv_nsec == 0 && remain.tv_sec == 0 {
-        return None;
-    }
-    Some(timespec_to_duration(remain))
-}
-
-fn duration_to_timespec(duration: Duration) -> timespec {
-    timespec {
-        tv_sec: duration.as_secs() as time_t,
-        tv_nsec: duration.subsec_nanos() as c_long,
-    }
-}
-
-fn timespec_to_duration(timespec: timespec) -> Duration {
-    Duration::new(timespec.tv_sec as u64, timespec.tv_nsec as u32)
-}
-
 fn duration_from_ns(duration_ns: u64) -> Duration {
     Duration::new(duration_ns / 1_000_000_000, (duration_ns % 1_000_000_000) as u32)
 }