Function std::sys::windows::pipe::spawn_pipe_relay

pub fn spawn_pipe_relay(
    source: &AnonPipe,
    ours_readable: bool,
    their_handle_inheritable: bool
) -> Result<AnonPipe>

Takes an asynchronous source pipe and returns a synchronous pipe suitable for sending to a child process.

This is achieved by creating a new set of pipes and spawning a thread that relays messages between the source and the synchronous pipe.