Module signal_hook::iterator
source · Expand description
An iterator over incoming signals.
This provides a higher abstraction over the signals, providing a structure
(Signals) able to iterate over the incoming signals.
In case the tokio-support feature is turned on, the Async is also
available, making it possible to integrate with the tokio runtime.
Examples
extern crate libc;
extern crate signal_hook;
use std::io::Error;
use signal_hook::iterator::Signals;
fn main() -> Result<(), Error> {
let signals = Signals::new(&[
signal_hook::SIGHUP,
signal_hook::SIGTERM,
signal_hook::SIGINT,
signal_hook::SIGQUIT,
])?;
'outer: loop {
// Pick up signals that arrived since last time
for signal in signals.pending() {
match signal as libc::c_int {
signal_hook::SIGHUP => {
// Reload configuration
// Reopen the log file
}
signal_hook::SIGTERM | signal_hook::SIGINT | signal_hook::SIGQUIT => {
break 'outer;
},
_ => unreachable!(),
}
}
// Do some bit of work ‒ something with upper limit on waiting, so we don't block
// forever with a SIGTERM already waiting.
}
println!("Terminating. Bye bye");
Ok(())
}