| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-util-0.3.28/src/sink/send.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>send.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../main.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../futures_util/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../futures_util/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="kw">use </span><span class="kw">super</span>::Feed; |
| <span class="kw">use </span>core::pin::Pin; |
| <span class="kw">use </span>futures_core::future::Future; |
| <span class="kw">use </span>futures_core::ready; |
| <span class="kw">use </span>futures_core::task::{Context, Poll}; |
| <span class="kw">use </span>futures_sink::Sink; |
| |
| <span class="doccomment">/// Future for the [`send`](super::SinkExt::send) method. |
| </span><span class="attribute">#[derive(Debug)] |
| #[must_use = <span class="string">"futures do nothing unless you `.await` or poll them"</span>] |
| </span><span class="kw">pub struct </span>Send<<span class="lifetime">'a</span>, Si: <span class="question-mark">?</span>Sized, Item> { |
| feed: Feed<<span class="lifetime">'a</span>, Si, Item>, |
| } |
| |
| <span class="comment">// Pinning is never projected to children |
| </span><span class="kw">impl</span><Si: Unpin + <span class="question-mark">?</span>Sized, Item> Unpin <span class="kw">for </span>Send<<span class="lifetime">'_</span>, Si, Item> {} |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, Si: Sink<Item> + Unpin + <span class="question-mark">?</span>Sized, Item> Send<<span class="lifetime">'a</span>, Si, Item> { |
| <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>new(sink: <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>Si, item: Item) -> <span class="self">Self </span>{ |
| <span class="self">Self </span>{ feed: Feed::new(sink, item) } |
| } |
| } |
| |
| <span class="kw">impl</span><Si: Sink<Item> + Unpin + <span class="question-mark">?</span>Sized, Item> Future <span class="kw">for </span>Send<<span class="lifetime">'_</span>, Si, Item> { |
| <span class="kw">type </span>Output = <span class="prelude-ty">Result</span><(), Si::Error>; |
| |
| <span class="kw">fn </span>poll(<span class="kw-2">mut </span><span class="self">self</span>: Pin<<span class="kw-2">&mut </span><span class="self">Self</span>>, cx: <span class="kw-2">&mut </span>Context<<span class="lifetime">'_</span>>) -> Poll<<span class="self">Self</span>::Output> { |
| <span class="kw">let </span>this = <span class="kw-2">&mut *</span><span class="self">self</span>; |
| |
| <span class="kw">if </span>this.feed.is_item_pending() { |
| <span class="macro">ready!</span>(Pin::new(<span class="kw-2">&mut </span>this.feed).poll(cx))<span class="question-mark">?</span>; |
| <span class="macro">debug_assert!</span>(!this.feed.is_item_pending()); |
| } |
| |
| <span class="comment">// we're done sending the item, but want to block on flushing the |
| // sink |
| </span><span class="macro">ready!</span>(this.feed.sink_pin_mut().poll_flush(cx))<span class="question-mark">?</span>; |
| |
| Poll::Ready(<span class="prelude-val">Ok</span>(())) |
| } |
| } |
| </code></pre></div> |
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