futuresdr 0.0.39

An Experimental Async SDR Runtime for Heterogeneous Architectures.
Documentation 
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use futures::SinkExt;
use futures::channel::mpsc;

use crate::runtime::BlockMeta;
use crate::runtime::MessageOutputs;
use crate::runtime::Pmt;
use crate::runtime::Result;
use crate::runtime::WorkIo;

/// Push received messages into a channel.
#[derive(Block)]
#[message_inputs(r#in)]
#[null_kernel]
pub struct MessagePipe {
    sender: mpsc::Sender<Pmt>,
}

impl MessagePipe {
    /// Create MessagePipe block
    pub fn new(sender: mpsc::Sender<Pmt>) -> Self {
        Self { sender }
    }

    async fn r#in(
        &mut self,
        _io: &mut WorkIo,
        _mio: &mut MessageOutputs,
        _meta: &mut BlockMeta,
        p: Pmt,
    ) -> Result<Pmt> {
        self.sender.send(p).await?;
        Ok(Pmt::Null)
    }
}