Files
async_trait
bitflags
byteorder
bytes
cfg_if
enum_primitive
futures
futures_channel
futures_core
futures_executor
futures_io
futures_macro
futures_sink
futures_task
futures_util
async_await
future
io
lock
sink
stream
task
instant
libc
lock_api
log
memchr
mio
nix
num_cpus
num_traits
once_cell
parking_lot
parking_lot_core
pin_project_lite
pin_utils
proc_macro2
proc_macro_hack
proc_macro_nested
quote
rs9p
scopeguard
signal_hook_registry
slab
smallvec
syn
tokio
fs
future
io
loom
macros
net
park
process
runtime
signal
sync
task
time
util
tokio_macros
tokio_stream
tokio_util
unicode_xid
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
use futures_core::future::Future;
use futures_core::task::{Context, Poll};
use futures_io::AsyncWrite;
use std::io;
use std::pin::Pin;

/// Future for the [`flush`](super::AsyncWriteExt::flush) method.
#[derive(Debug)]
#[must_use = "futures do nothing unless you `.await` or poll them"]
pub struct Flush<'a, W: ?Sized> {
    writer: &'a mut W,
}

impl<W: ?Sized + Unpin> Unpin for Flush<'_, W> {}

impl<'a, W: AsyncWrite + ?Sized + Unpin> Flush<'a, W> {
    pub(super) fn new(writer: &'a mut W) -> Self {
        Self { writer }
    }
}

impl<W> Future for Flush<'_, W>
    where W: AsyncWrite + ?Sized + Unpin,
{
    type Output = io::Result<()>;

    fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
        Pin::new(&mut *self.writer).poll_flush(cx)
    }
}