mirror of https://github.com/stjepang/smol
34 lines
918 B
Rust
34 lines
918 B
Rust
//! Uses the `signal-hook` crate to catch the Ctrl-C signal.
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//!
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//! Run with:
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//!
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//! ```
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//! cargo run --example unix-signal
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//! ```
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#[cfg(unix)]
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fn main() -> std::io::Result<()> {
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use std::os::unix::{io::AsRawFd, net::UnixStream};
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use smol::{prelude::*, Async};
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smol::block_on(async {
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// Create a Unix stream that receives a byte on each signal occurrence.
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let (a, mut b) = Async::<UnixStream>::pair()?;
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// Async isn't IntoRawFd, but it is AsRawFd, so let's pass the raw fd directly.
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signal_hook::low_level::pipe::register_raw(signal_hook::consts::SIGINT, a.as_raw_fd())?;
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println!("Waiting for Ctrl-C...");
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// Receive a byte that indicates the Ctrl-C signal occurred.
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b.read_exact(&mut [0]).await?;
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println!("Done!");
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Ok(())
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})
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}
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#[cfg(not(unix))]
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fn main() {
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println!("This example works only on Unix systems!");
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}
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