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#![warn(rust_2018_idioms)]
#![feature(async_await)]
//! A small example of how to listen for two signals at the same time
// A trick to not fail build on non-unix platforms when using unix-specific features.
#[cfg(unix)]
mod platform {
use futures_util::stream::{self, StreamExt};
use tokio_signal::unix::{Signal, SIGINT, SIGTERM};
pub async fn main() {
// Create a stream for each of the signals we'd like to handle.
let sigint = Signal::new(SIGINT).unwrap().map(|_| SIGINT);
let sigterm = Signal::new(SIGTERM).unwrap().map(|_| SIGTERM);
// Use the `select` combinator to merge these two streams into one
let stream = stream::select(sigint, sigterm);
// Wait for a signal to arrive
println!("Waiting for SIGINT or SIGTERM");
println!(
" TIP: use `pkill -sigint multiple` from a second terminal \
to send a SIGINT to all processes named 'multiple' \
(i.e. this binary)"
);
let (item, _rest) = stream.into_future().await;
// Figure out which signal we received
let item = item.ok_or("received no signal").unwrap();
if item == SIGINT {
println!("received SIGINT");
} else {
assert_eq!(item, SIGTERM);
println!("received SIGTERM");
}
}
}
#[cfg(not(unix))]
mod platform {
pub async fn main() {}
}
#[tokio::main]
async fn main() {
platform::main().await
}
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