Crate mio_pidfd[−][src]
Expand description
mio-pidfd
mio-pidfd
A Linux pidfd wrapper for mio. This is useful for using mio to wait for multiple child processes to exit in a non-blocking event-driven way.
Heavily inspired by mio-timerfd
Example
use mio_pidfd::PidFd;
use mio::{Poll, Interest, Events, Token};
use std::process::{Command, Child};
let mut poll = Poll::new().unwrap();
let mut events = Events::with_capacity(1024);
let mut child = Command::new("/bin/sleep").arg("1").spawn().unwrap();
let mut pidfd = PidFd::new(&child).unwrap();
poll.registry()
.register(&mut pidfd, Token(0), Interest::READABLE)
.unwrap();
poll.poll(&mut events, None).unwrap();
assert!(child.try_wait().unwrap().unwrap().code().unwrap() == 0);
Requirements
This library relies on the pidfd_open()
system call which was introduced
in Linux kernel version 5.3.
The pidfd_send_signal()
system call (used by supplementary kill()
functionality) was introduced in Linux kernel version 5.1
Structs
A Linux pidfd abstraction that can be used to poll the exit status of multiple child processes using mio.