Function oneshot 

pub fn oneshot<T>() -> Option<(GenericOneshotSender<T>, GenericOneshotReceiver<T>)>
where
    T: for<'de> Deserialize<'de> + Serialize,

Creates a oneshot generic channel used to send only a single message, similar tokio::sync::oneshot. This is not the same as ipc_channel::oneshot. The send and receive methods will consume the Sender/Receiver. We will automatically select ipc or crossbeam channels.