v-module-queue 0.1.1

Veda module queue consumer runtime (without full-text / xapian stack)
Documentation 
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use crossbeam_channel::{bounded, Receiver};
use signal_hook::consts::signal::*;
use signal_hook::consts::{SIGCONT, SIGTSTP};
use signal_hook::iterator::Signals;
use signal_hook::low_level;
use std::io::Error;
use std::os::raw::c_int;
use std::thread;

const SIGNALS: &[c_int] = &[SIGTERM, SIGQUIT, SIGINT, SIGTSTP, SIGCONT];

pub fn sys_sig_listener() -> Result<Receiver<i32>, Error> {
    let (sender, receiver) = bounded(1);
    thread::spawn(move || {
        info!("Start system signal listener");
        let mut sigs = Signals::new(SIGNALS).unwrap();
        for signal in &mut sigs {
            warn!("Received signal {:?}", signal);

            if signal != SIGTERM {
                low_level::emulate_default_handler(signal).unwrap();
            }

            let _ = sender.send(signal);
        }
    });
    Ok(receiver)
}