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polling 3.3.0

Portable interface to epoll, kqueue, event ports, and IOCP
Documentation 
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#[cfg(all(
    any(
        target_os = "macos",
        target_os = "ios",
        target_os = "tvos",
        target_os = "watchos",
        target_os = "freebsd",
        target_os = "netbsd",
        target_os = "openbsd",
        target_os = "dragonfly",
    ),
    not(polling_test_poll_backend),
))]
mod example {
    use polling::os::kqueue::{PollerKqueueExt, Signal};
    use polling::{Events, PollMode, Poller};

    pub(super) fn main2() {
        // Create a poller.
        let poller = Poller::new().unwrap();

        // Register SIGINT in the poller.
        let sigint = Signal(rustix::process::Signal::Int as _);
        poller.add_filter(sigint, 1, PollMode::Oneshot).unwrap();

        let mut events = Events::new();

        println!("Press Ctrl+C to exit...");

        loop {
            // Wait for events.
            poller.wait(&mut events, None).unwrap();

            // Process events.
            for ev in events.iter() {
                match ev.key {
                    1 => {
                        println!("SIGINT received");
                        return;
                    }
                    _ => unreachable!(),
                }
            }

            events.clear();
        }
    }
}

#[cfg(all(
    any(
        target_os = "macos",
        target_os = "ios",
        target_os = "tvos",
        target_os = "watchos",
        target_os = "freebsd",
        target_os = "netbsd",
        target_os = "openbsd",
        target_os = "dragonfly",
    ),
    not(polling_test_poll_backend),
))]
fn main() {
    example::main2();
}

#[cfg(not(all(
    any(
        target_os = "macos",
        target_os = "ios",
        target_os = "tvos",
        target_os = "watchos",
        target_os = "freebsd",
        target_os = "netbsd",
        target_os = "openbsd",
        target_os = "dragonfly",
    ),
    not(polling_test_poll_backend),
)))]
fn main() {
    eprintln!("This example is only supported on kqueue-based platforms.");
}