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future

lock

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sink

buffer.rs close.rs drain.rs err_into.rs fanout.rs flush.rs map_err.rs mod.rs send.rs send_all.rs with.rs with_flat_map.rs

stream

task

mod.rs spawn.rs

lib.rs never.rs

gio

auto

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lib.rs net_address_meta.rs net_client_clock.rs net_time_provider.rs ntp_clock.rs ptp_clock.rs

gstreamer_net_sys

gstreamer_pbutils

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gstreamer_rtp

auto

constants.rs enums.rs flags.rs functions.rs mod.rs

lib.rs rtp_buffer.rs

gstreamer_rtp_sys

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lib.rs web_rtc_session_description.rs

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paste

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pin_utils

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proc_macro_nested

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serde

de

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private

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ser

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serde_bytes

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bound.rs de.rs dummy.rs fragment.rs lib.rs pretend.rs ser.rs try.rs

slab

syn

unicode_xid

lib.rs tables.rs

use core::pin::Pin;
use futures_core::future::Future;
use futures_core::task::{Context, Poll};
use futures_sink::Sink;

/// Future for the [`send`](super::SinkExt::send) method.
#[derive(Debug)]
#[must_use = "futures do nothing unless you `.await` or poll them"]
pub struct Send<'a, Si: ?Sized, Item> {
    sink: &'a mut Si,
    item: Option<Item>,
}

// Pinning is never projected to children
impl<Si: Unpin + ?Sized, Item> Unpin for Send<'_, Si, Item> {}

impl<'a, Si: Sink<Item> + Unpin + ?Sized, Item> Send<'a, Si, Item> {
    pub(super) fn new(sink: &'a mut Si, item: Item) -> Self {
        Send {
            sink,
            item: Some(item),
        }
    }
}

impl<Si: Sink<Item> + Unpin + ?Sized, Item> Future for Send<'_, Si, Item> {
    type Output = Result<(), Si::Error>;

    fn poll(
        mut self: Pin<&mut Self>,
        cx: &mut Context<'_>,
    ) -> Poll<Self::Output> {
        let this = &mut *self;
        if let Some(item) = this.item.take() {
            let mut sink = Pin::new(&mut this.sink);
            match sink.as_mut().poll_ready(cx)? {
                Poll::Ready(()) => sink.as_mut().start_send(item)?,
                Poll::Pending => {
                    this.item = Some(item);
                    return Poll::Pending;
                }
            }
        }

        // we're done sending the item, but want to block on flushing the
        // sink
        ready!(Pin::new(&mut this.sink).poll_flush(cx))?;

        Poll::Ready(Ok(()))
    }
}

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