interprocess 2.3.1

Interprocess communication toolkit
Documentation 
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//{
use std::{io, os, sync::mpsc};
#[cfg(windows)]
type Handle = os::windows::io::OwnedHandle;
#[cfg(unix)]
type Handle = os::unix::io::OwnedFd;
pub(crate) fn emain(handle_sender: mpsc::SyncSender<Handle>) -> io::Result<()> {
    //}
    use {
        interprocess::unnamed_pipe::pipe,
        std::io::{prelude::*, BufReader},
    };

    // Create the unnamed pipe, yielding a sender and a receiver.
    let (tx, rx) = pipe()?;

    // Let's extract the raw handle or file descriptor of the sender. Note that `OwnedHandle` and
    // `OwnedFd` both implement `From<unnamed_pipe::Sender>`.
    let txh = tx.into();
    // Now deliver `txh` to the child process. This may be done by starting it here with a
    // command-line argument or via stdin. This works because child processes inherit handles and
    // file descriptors to unnamed pipes. You can also use a different platform-specific way of
    // transferring handles or file descriptors across a process boundary.
    //{
    handle_sender.send(txh).unwrap();
    //}

    let mut buf = String::with_capacity(128);
    // We'd like to receive a line, so buffer our input.
    let mut rx = BufReader::new(rx);
    // Receive the line from the other process.
    rx.read_line(&mut buf)?;

    assert_eq!(buf.trim(), "Hello from side B!");
    //{
    Ok(())
}
#[allow(dead_code)]
fn main() {} //}