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//! Uses the `signal-hook` crate to catch the Ctrl-C signal.
//!
//! Run with:
//!
//! ```
//! cargo run --example unix-signal
//! ```
#[cfg(unix)]
fn main() -> std::io::Result<()> {
use std::os::unix::{io::AsRawFd, net::UnixStream};
use async_io::Async;
use futures_lite::{future, prelude::*};
future::block_on(async {
// Create a Unix stream that receives a byte on each signal occurrence.
let (a, mut b) = Async::<UnixStream>::pair()?;
signal_hook::low_level::pipe::register_raw(signal_hook::consts::SIGINT, a.as_raw_fd())?;
println!("Waiting for Ctrl-C...");
// Receive a byte that indicates the Ctrl-C signal occurred.
b.read_exact(&mut [0]).await?;
println!("Done!");
Ok(())
})
}
#[cfg(not(unix))]
fn main() {
println!("This example works only on Unix systems!");
}
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