cursive/src/backend/resize.rs

use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::Arc;
use std::thread;

use crossbeam_channel::Sender;
use signal_hook::iterator::Signals;

/// This starts a new thread to listen for SIGWINCH signals
#[allow(unused)]
pub fn start_resize_thread(
    resize_sender: Sender<()>, resize_running: Arc<AtomicBool>,
) {
    let signals = Signals::new(&[libc::SIGWINCH]).unwrap();
    thread::spawn(move || {
        // This thread will listen to SIGWINCH events and report them.
        while resize_running.load(Ordering::Relaxed) {
            // We know it will only contain SIGWINCH signals, so no need to check.
            if signals.wait().count() > 0 {
                resize_sender.send(()).unwrap();
            }
        }
    });
}