From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- vendor/tokio/src/io/util/write.rs | 46 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 vendor/tokio/src/io/util/write.rs (limited to 'vendor/tokio/src/io/util/write.rs') diff --git a/vendor/tokio/src/io/util/write.rs b/vendor/tokio/src/io/util/write.rs new file mode 100644 index 000000000..92169ebc1 --- /dev/null +++ b/vendor/tokio/src/io/util/write.rs @@ -0,0 +1,46 @@ +use crate::io::AsyncWrite; + +use pin_project_lite::pin_project; +use std::future::Future; +use std::io; +use std::marker::PhantomPinned; +use std::pin::Pin; +use std::task::{Context, Poll}; + +pin_project! { + /// A future to write some of the buffer to an `AsyncWrite`. + #[derive(Debug)] + #[must_use = "futures do nothing unless you `.await` or poll them"] + pub struct Write<'a, W: ?Sized> { + writer: &'a mut W, + buf: &'a [u8], + // Make this future `!Unpin` for compatibility with async trait methods. + #[pin] + _pin: PhantomPinned, + } +} + +/// Tries to write some bytes from the given `buf` to the writer in an +/// asynchronous manner, returning a future. +pub(crate) fn write<'a, W>(writer: &'a mut W, buf: &'a [u8]) -> Write<'a, W> +where + W: AsyncWrite + Unpin + ?Sized, +{ + Write { + writer, + buf, + _pin: PhantomPinned, + } +} + +impl Future for Write<'_, W> +where + W: AsyncWrite + Unpin + ?Sized, +{ + type Output = io::Result; + + fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll> { + let me = self.project(); + Pin::new(&mut *me.writer).poll_write(cx, me.buf) + } +} -- cgit v1.2.3