main.rs

extern crate libc;

use std::{thread, process};
use std::time::Duration;

fn sigint_handler(sig: libc::c_int) {
    if sig != libc::SIGINT {
        println!("Oops, not for me. Ignoring {}.", sig);
        return;
    }
    println!("Just give me three seconds to clean up...");
    thread::sleep(Duration::from_secs(3));
    println!("Alright, done here.");
    process::exit(0);
}

fn register_sighandler(sig: libc::c_int, handler: fn(libc::c_int)) -> Result<(), ()> {
    unsafe {
        match libc::signal(sig, handler as usize) {
            libc::SIG_ERR => Err(()),
            _ => Ok(()),
        }
    }
}


fn main() {
    register_sighandler(libc::SIGINT, sigint_handler).expect("Unable to register SIGINT handler");

    loop {
        thread::sleep(Duration::from_secs(1));
        println!("Running just fine.");
    }
}