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<!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="API documentation for the Rust `AsyncFd` struct in crate `tokio`."><meta name="keywords" content="rust, rustlang, rust-lang, AsyncFd"><title>tokio::io::unix::AsyncFd - Rust</title><link rel="stylesheet" type="text/css" href="../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../../ayu.css" disabled ><script id="default-settings"></script><script src="../../../storage.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="icon" type="image/svg+xml" href="../../../favicon.svg">
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<link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><style type="text/css">#crate-search{background-image:url("../../../down-arrow.svg");}</style></head><body class="rustdoc struct"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../../../tokio/index.html'><div class='logo-container rust-logo'><img src='../../../rust-logo.png' alt='logo'></div></a><p class="location">Struct AsyncFd</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#implementations">Methods</a><div class="sidebar-links"><a href="#method.get_mut">get_mut</a><a href="#method.get_ref">get_ref</a><a href="#method.into_inner">into_inner</a><a href="#method.new">new</a><a href="#method.poll_read_ready">poll_read_ready</a><a href="#method.poll_read_ready_mut">poll_read_ready_mut</a><a href="#method.poll_write_ready">poll_write_ready</a><a href="#method.poll_write_ready_mut">poll_write_ready_mut</a><a href="#method.readable">readable</a><a href="#method.readable_mut">readable_mut</a><a href="#method.with_interest">with_interest</a><a href="#method.writable">writable</a><a href="#method.writable_mut">writable_mut</a></div><a class="sidebar-title" href="#trait-implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-AsRawFd">AsRawFd</a><a href="#impl-Debug">Debug</a><a href="#impl-Drop">Drop</a></div><a class="sidebar-title" href="#synthetic-implementations">Auto Trait Implementations</a><div class="sidebar-links"><a href="#impl-RefUnwindSafe">!RefUnwindSafe</a><a href="#impl-Send">Send</a><a href="#impl-Sync">Sync</a><a href="#impl-Unpin">Unpin</a><a href="#impl-UnwindSafe">!UnwindSafe</a></div><a class="sidebar-title" href="#blanket-implementations">Blanket Implementations</a><div class="sidebar-links"><a href="#impl-Any">Any</a><a href="#impl-Borrow%3CT%3E">Borrow<T></a><a href="#impl-BorrowMut%3CT%3E">BorrowMut<T></a><a href="#impl-From%3CT%3E">From<T></a><a href="#impl-Into%3CU%3E">Into<U></a><a href="#impl-TryFrom%3CU%3E">TryFrom<U></a><a href="#impl-TryInto%3CU%3E">TryInto<U></a></div></div><p class="location"><a href="../../index.html">tokio</a>::<wbr><a href="../index.html">io</a>::<wbr><a href="index.html">unix</a></p><script>window.sidebarCurrent = {name: "AsyncFd", ty: "struct", relpath: ""};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu"><img src="../../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices" role="menu"></div></div><script src="../../../theme.js"></script><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><span class="help-button">?</span>
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<a id="settings-menu" href="../../../settings.html"><img src="../../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class="fqn"><span class="out-of-band"><span id="render-detail"><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#135-138" title="goto source code">[src]</a></span><span class="in-band">Struct <a href="../../index.html">tokio</a>::<wbr><a href="../index.html">io</a>::<wbr><a href="index.html">unix</a>::<wbr><a class="struct" href="">AsyncFd</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class="rust struct">pub struct AsyncFd<T: <a class="trait" href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.AsRawFd.html" title="trait std::sys::unix::ext::io::AsRawFd">AsRawFd</a>> { /* fields omitted */ }</pre></div><div class="docblock"><p>Associates an IO object backed by a Unix file descriptor with the tokio
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reactor, allowing for readiness to be polled. The file descriptor must be of
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a type that can be used with the OS polling facilities (ie, <code>poll</code>, <code>epoll</code>,
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<code>kqueue</code>, etc), such as a network socket or pipe.</p>
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<p>Creating an AsyncFd registers the file descriptor with the current tokio
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Reactor, allowing you to directly await the file descriptor being readable
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or writable. Once registered, the file descriptor remains registered until
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the AsyncFd is dropped.</p>
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<p>The AsyncFd takes ownership of an arbitrary object to represent the IO
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object. It is intended that this object will handle closing the file
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descriptor when it is dropped, avoiding resource leaks and ensuring that the
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AsyncFd can clean up the registration before closing the file descriptor.
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The <a href="../../../tokio/io/unix/struct.AsyncFd.html#method.into_inner" title="AsyncFd::into_inner"><code>AsyncFd::into_inner</code></a> function can be used to extract the inner object
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to retake control from the tokio IO reactor.</p>
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<p>The inner object is required to implement <a href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.AsRawFd.html" title="AsRawFd"><code>AsRawFd</code></a>. This file descriptor
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must not change while <a href="../../../tokio/io/unix/struct.AsyncFd.html" title="AsyncFd"><code>AsyncFd</code></a> owns the inner object. Changing the file
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descriptor results in unspecified behavior in the IO driver, which may
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include breaking notifications for other sockets/etc.</p>
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<p>Polling for readiness is done by calling the async functions <a href="../../../tokio/io/unix/struct.AsyncFd.html#method.readable"><code>readable</code></a>
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and <a href="../../../tokio/io/unix/struct.AsyncFd.html#method.writable"><code>writable</code></a>. These functions complete when the associated readiness
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condition is observed. Any number of tasks can query the same <code>AsyncFd</code> in
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parallel, on the same or different conditions.</p>
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<p>On some platforms, the readiness detecting mechanism relies on
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edge-triggered notifications. This means that the OS will only notify Tokio
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when the file descriptor transitions from not-ready to ready. Tokio
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internally tracks when it has received a ready notification, and when
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readiness checking functions like <a href="../../../tokio/io/unix/struct.AsyncFd.html#method.readable"><code>readable</code></a> and <a href="../../../tokio/io/unix/struct.AsyncFd.html#method.writable"><code>writable</code></a> are called,
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if the readiness flag is set, these async functions will complete
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immediately.</p>
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<p>This however does mean that it is critical to ensure that this ready flag is
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cleared when (and only when) the file descriptor ceases to be ready. The
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<a href="../../../tokio/io/unix/struct.AsyncFdReadyGuard.html"><code>AsyncFdReadyGuard</code></a> returned from readiness checking functions serves this
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function; after calling a readiness-checking async function, you must use
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this <a href="../../../tokio/io/unix/struct.AsyncFdReadyGuard.html"><code>AsyncFdReadyGuard</code></a> to signal to tokio whether the file descriptor is no
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longer in a ready state.</p>
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<h2 id="use-with-to-a-poll-based-api" class="section-header"><a href="#use-with-to-a-poll-based-api">Use with to a poll-based API</a></h2>
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<p>In some cases it may be desirable to use <code>AsyncFd</code> from APIs similar to
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<a href="../../../tokio/net/struct.TcpStream.html"><code>TcpStream::poll_read_ready</code></a>. The <a href="../../../tokio/io/unix/struct.AsyncFd.html#method.poll_read_ready" title="AsyncFd::poll_read_ready"><code>AsyncFd::poll_read_ready</code></a> and
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<a href="../../../tokio/io/unix/struct.AsyncFd.html#method.poll_write_ready" title="AsyncFd::poll_write_ready"><code>AsyncFd::poll_write_ready</code></a> functions are provided for this purpose.
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Because these functions don't create a future to hold their state, they have
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the limitation that only one task can wait on each direction (read or write)
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at a time.</p>
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<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
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<p>This example shows how to turn <a href="https://doc.rust-lang.org/nightly/std/net/tcp/struct.TcpStream.html" title="std::net::TcpStream"><code>std::net::TcpStream</code></a> asynchronous using
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<code>AsyncFd</code>. It implements <code>read</code> as an async fn, and <code>AsyncWrite</code> as a trait
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to show how to implement both approaches.</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered">
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<span class="kw">use</span> <span class="ident">futures</span>::<span class="ident">ready</span>;
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<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>::{<span class="self">self</span>, <span class="ident">Read</span>, <span class="ident">Write</span>};
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<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">net</span>::<span class="ident">TcpStream</span>;
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<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">pin</span>::<span class="ident">Pin</span>;
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<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">task</span>::{<span class="ident">Context</span>, <span class="ident">Poll</span>};
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<span class="kw">use</span> <span class="ident">tokio</span>::<span class="ident">io</span>::<span class="ident">AsyncWrite</span>;
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<span class="kw">use</span> <span class="ident">tokio</span>::<span class="ident">io</span>::<span class="ident">unix</span>::<span class="ident">AsyncFd</span>;
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<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">AsyncTcpStream</span> {
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<span class="ident">inner</span>: <span class="ident">AsyncFd</span><span class="op"><</span><span class="ident">TcpStream</span><span class="op">></span>,
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}
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<span class="kw">impl</span> <span class="ident">AsyncTcpStream</span> {
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<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">tcp</span>: <span class="ident">TcpStream</span>) <span class="op">-</span><span class="op">></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="self">Self</span><span class="op">></span> {
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<span class="prelude-val">Ok</span>(<span class="self">Self</span> {
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<span class="ident">inner</span>: <span class="ident">AsyncFd</span>::<span class="ident">new</span>(<span class="ident">tcp</span>)<span class="question-mark">?</span>,
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})
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}
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<span class="kw">pub</span> <span class="ident">async</span> <span class="kw">fn</span> <span class="ident">read</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">out</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> [<span class="ident">u8</span>]) <span class="op">-</span><span class="op">></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> {
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<span class="kw">loop</span> {
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<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">guard</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">readable</span>().<span class="ident">await</span><span class="question-mark">?</span>;
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<span class="kw">match</span> <span class="ident">guard</span>.<span class="ident">try_io</span>(<span class="op">|</span><span class="ident">inner</span><span class="op">|</span> <span class="ident">inner</span>.<span class="ident">get_ref</span>().<span class="ident">read</span>(<span class="ident">out</span>)) {
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<span class="prelude-val">Ok</span>(<span class="ident">result</span>) <span class="op">=</span><span class="op">></span> <span class="kw">return</span> <span class="ident">result</span>,
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<span class="prelude-val">Err</span>(<span class="ident">_would_block</span>) <span class="op">=</span><span class="op">></span> <span class="kw">continue</span>,
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}
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}
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}
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}
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<span class="kw">impl</span> <span class="ident">AsyncWrite</span> <span class="kw">for</span> <span class="ident">AsyncTcpStream</span> {
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<span class="kw">fn</span> <span class="ident">poll_write</span>(
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<span class="self">self</span>: <span class="ident">Pin</span><span class="op"><</span><span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">Self</span><span class="op">></span>,
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<span class="ident">cx</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">Context</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span>,
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<span class="ident">buf</span>: <span class="kw-2">&</span>[<span class="ident">u8</span>]
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) <span class="op">-</span><span class="op">></span> <span class="ident">Poll</span><span class="op"><</span><span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span><span class="op">></span> {
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<span class="kw">loop</span> {
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<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">guard</span> <span class="op">=</span> <span class="macro">ready</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">poll_write_ready</span>(<span class="ident">cx</span>))<span class="question-mark">?</span>;
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<span class="kw">match</span> <span class="ident">guard</span>.<span class="ident">try_io</span>(<span class="op">|</span><span class="ident">inner</span><span class="op">|</span> <span class="ident">inner</span>.<span class="ident">get_ref</span>().<span class="ident">write</span>(<span class="ident">buf</span>)) {
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<span class="prelude-val">Ok</span>(<span class="ident">result</span>) <span class="op">=</span><span class="op">></span> <span class="kw">return</span> <span class="ident">Poll</span>::<span class="ident">Ready</span>(<span class="ident">result</span>),
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<span class="prelude-val">Err</span>(<span class="ident">_would_block</span>) <span class="op">=</span><span class="op">></span> <span class="kw">continue</span>,
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}
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}
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}
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<span class="kw">fn</span> <span class="ident">poll_flush</span>(
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<span class="self">self</span>: <span class="ident">Pin</span><span class="op"><</span><span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">Self</span><span class="op">></span>,
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<span class="ident">cx</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">Context</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span>,
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) <span class="op">-</span><span class="op">></span> <span class="ident">Poll</span><span class="op"><</span><span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span><span class="op">></span> {
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<span class="comment">// tcp flush is a no-op</span>
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<span class="ident">Poll</span>::<span class="ident">Ready</span>(<span class="prelude-val">Ok</span>(()))
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}
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<span class="kw">fn</span> <span class="ident">poll_shutdown</span>(
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<span class="self">self</span>: <span class="ident">Pin</span><span class="op"><</span><span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">Self</span><span class="op">></span>,
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<span class="ident">cx</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">Context</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span>,
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) <span class="op">-</span><span class="op">></span> <span class="ident">Poll</span><span class="op"><</span><span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span><span class="op">></span> {
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<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">get_ref</span>().<span class="ident">shutdown</span>(<span class="ident">std</span>::<span class="ident">net</span>::<span class="ident">Shutdown</span>::<span class="ident">Write</span>)<span class="question-mark">?</span>;
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<span class="ident">Poll</span>::<span class="ident">Ready</span>(<span class="prelude-val">Ok</span>(()))
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}
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}</pre></div>
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</div><h2 id="implementations" class="small-section-header">Implementations<a href="#implementations" class="anchor"></a></h2><h3 id="impl" class="impl"><code class="in-band">impl<T: <a class="trait" href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.AsRawFd.html" title="trait std::sys::unix::ext::io::AsRawFd">AsRawFd</a>> <a class="struct" href="../../../tokio/io/unix/struct.AsyncFd.html" title="struct tokio::io::unix::AsyncFd">AsyncFd</a><T></code><a href="#impl" class="anchor"></a><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#164-456" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.new" class="method"><code>pub fn <a href="#method.new" class="fnname">new</a>(inner: T) -> <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a><Self> <span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.AsRawFd.html" title="trait std::sys::unix::ext::io::AsRawFd">AsRawFd</a>, </span></code><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#171-176" title="goto source code">[src]</a></h4><div class="docblock"><p>Creates an AsyncFd backed by (and taking ownership of) an object
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implementing <a href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.AsRawFd.html" title="AsRawFd"><code>AsRawFd</code></a>. The backing file descriptor is cached at the
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time of creation.</p>
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<p>This method must be called in the context of a tokio runtime.</p>
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</div><h4 id="method.with_interest" class="method"><code>pub fn <a href="#method.with_interest" class="fnname">with_interest</a>(inner: T, interest: <a class="struct" href="../../../tokio/io/struct.Interest.html" title="struct tokio::io::Interest">Interest</a>) -> <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a><Self> <span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.AsRawFd.html" title="trait std::sys::unix::ext::io::AsRawFd">AsRawFd</a>, </span></code><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#181-186" title="goto source code">[src]</a></h4><div class="docblock"><p>Creates new instance as <code>new</code> with additional ability to customize interest,
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allowing to specify whether file descriptor will be polled for read, write or both.</p>
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</div><h4 id="method.get_ref" class="method"><code>pub fn <a href="#method.get_ref" class="fnname">get_ref</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T<span class="notable-traits"><span class="notable-traits-tooltip">ⓘ<div class="notable-traits-tooltiptext"><span class="docblock"><h3 class="notable">Notable traits for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'_ mut </a>F</h3><code class="content"><span class="where fmt-newline">impl<'_, F> <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'_ mut </a>F <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></span><span class="where fmt-newline"> type <a href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" class="type">Output</a> = <F as <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>;</span></code></span></div></span></span></code><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#206-208" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns a shared reference to the backing object of this <a href="../../../tokio/io/unix/struct.AsyncFd.html" title="AsyncFd"><code>AsyncFd</code></a></p>
|
||
</div><h4 id="method.get_mut" class="method"><code>pub fn <a href="#method.get_mut" class="fnname">get_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T<span class="notable-traits"><span class="notable-traits-tooltip">ⓘ<div class="notable-traits-tooltiptext"><span class="docblock"><h3 class="notable">Notable traits for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'_ mut </a>F</h3><code class="content"><span class="where fmt-newline">impl<'_, F> <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'_ mut </a>F <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></span><span class="where fmt-newline"> type <a href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" class="type">Output</a> = <F as <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>;</span></code></span></div></span></span></code><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#212-214" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns a mutable reference to the backing object of this <a href="../../../tokio/io/unix/struct.AsyncFd.html" title="AsyncFd"><code>AsyncFd</code></a></p>
|
||
</div><h4 id="method.into_inner" class="method"><code>pub fn <a href="#method.into_inner" class="fnname">into_inner</a>(self) -> T</code><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#228-230" title="goto source code">[src]</a></h4><div class="docblock"><p>Deregisters this file descriptor and returns ownership of the backing
|
||
object.</p>
|
||
</div><h4 id="method.poll_read_ready" class="method"><code>pub fn <a href="#method.poll_read_ready" class="fnname">poll_read_ready</a><'a>(<br> &'a self, <br> cx: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Context.html" title="struct core::task::wake::Context">Context</a><'_><br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/task/poll/enum.Poll.html" title="enum core::task::poll::Poll">Poll</a><<a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a><<a class="struct" href="../../../tokio/io/unix/struct.AsyncFdReadyGuard.html" title="struct tokio::io::unix::AsyncFdReadyGuard">AsyncFdReadyGuard</a><'a, T>>></code><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#259-270" title="goto source code">[src]</a></h4><div class="docblock"><p>Polls for read readiness.</p>
|
||
<p>If the file descriptor is not currently ready for reading, this method
|
||
will store a clone of the <a href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Waker.html"><code>Waker</code></a> from the provided <a href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Context.html"><code>Context</code></a>. When the
|
||
file descriptor becomes ready for reading, <a href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Waker.html#method.wake"><code>Waker::wake</code></a> will be called.</p>
|
||
<p>Note that on multiple calls to <a href="../../../tokio/io/unix/struct.AsyncFd.html#method.poll_read_ready"><code>poll_read_ready</code></a> or
|
||
<a href="../../../tokio/io/unix/struct.AsyncFd.html#method.poll_read_ready_mut"><code>poll_read_ready_mut</code></a>, only the <code>Waker</code> from the <code>Context</code> passed to the
|
||
most recent call is scheduled to receive a wakeup. (However,
|
||
<a href="../../../tokio/io/unix/struct.AsyncFd.html#method.poll_write_ready"><code>poll_write_ready</code></a> retains a second, independent waker).</p>
|
||
<p>This method is intended for cases where creating and pinning a future
|
||
via <a href="../../../tokio/io/unix/struct.AsyncFd.html#method.readable"><code>readable</code></a> is not feasible. Where possible, using <a href="../../../tokio/io/unix/struct.AsyncFd.html#method.readable"><code>readable</code></a> is
|
||
preferred, as this supports polling from multiple tasks at once.</p>
|
||
<p>This method takes <code>&self</code>, so it is possible to call this method
|
||
concurrently with other methods on this struct. This method only
|
||
provides shared access to the inner IO resource when handling the
|
||
<a href="../../../tokio/io/unix/struct.AsyncFdReadyGuard.html" title="AsyncFdReadyGuard"><code>AsyncFdReadyGuard</code></a>.</p>
|
||
</div><h4 id="method.poll_read_ready_mut" class="method"><code>pub fn <a href="#method.poll_read_ready_mut" class="fnname">poll_read_ready_mut</a><'a>(<br> &'a mut self, <br> cx: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Context.html" title="struct core::task::wake::Context">Context</a><'_><br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/task/poll/enum.Poll.html" title="enum core::task::poll::Poll">Poll</a><<a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a><<a class="struct" href="../../../tokio/io/unix/struct.AsyncFdReadyMutGuard.html" title="struct tokio::io::unix::AsyncFdReadyMutGuard">AsyncFdReadyMutGuard</a><'a, T>>></code><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#297-308" title="goto source code">[src]</a></h4><div class="docblock"><p>Polls for read readiness.</p>
|
||
<p>If the file descriptor is not currently ready for reading, this method
|
||
will store a clone of the <a href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Waker.html"><code>Waker</code></a> from the provided <a href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Context.html"><code>Context</code></a>. When the
|
||
file descriptor becomes ready for reading, <a href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Waker.html#method.wake"><code>Waker::wake</code></a> will be called.</p>
|
||
<p>Note that on multiple calls to <a href="../../../tokio/io/unix/struct.AsyncFd.html#method.poll_read_ready"><code>poll_read_ready</code></a> or
|
||
<a href="../../../tokio/io/unix/struct.AsyncFd.html#method.poll_read_ready_mut"><code>poll_read_ready_mut</code></a>, only the <code>Waker</code> from the <code>Context</code> passed to the
|
||
most recent call is scheduled to receive a wakeup. (However,
|
||
<a href="../../../tokio/io/unix/struct.AsyncFd.html#method.poll_write_ready"><code>poll_write_ready</code></a> retains a second, independent waker).</p>
|
||
<p>This method is intended for cases where creating and pinning a future
|
||
via <a href="../../../tokio/io/unix/struct.AsyncFd.html#method.readable"><code>readable</code></a> is not feasible. Where possible, using <a href="../../../tokio/io/unix/struct.AsyncFd.html#method.readable"><code>readable</code></a> is
|
||
preferred, as this supports polling from multiple tasks at once.</p>
|
||
<p>This method takes <code>&mut self</code>, so it is possible to access the inner IO
|
||
resource mutably when handling the <a href="../../../tokio/io/unix/struct.AsyncFdReadyMutGuard.html" title="AsyncFdReadyMutGuard"><code>AsyncFdReadyMutGuard</code></a>.</p>
|
||
</div><h4 id="method.poll_write_ready" class="method"><code>pub fn <a href="#method.poll_write_ready" class="fnname">poll_write_ready</a><'a>(<br> &'a self, <br> cx: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Context.html" title="struct core::task::wake::Context">Context</a><'_><br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/task/poll/enum.Poll.html" title="enum core::task::poll::Poll">Poll</a><<a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a><<a class="struct" href="../../../tokio/io/unix/struct.AsyncFdReadyGuard.html" title="struct tokio::io::unix::AsyncFdReadyGuard">AsyncFdReadyGuard</a><'a, T>>></code><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#337-348" title="goto source code">[src]</a></h4><div class="docblock"><p>Polls for write readiness.</p>
|
||
<p>If the file descriptor is not currently ready for writing, this method
|
||
will store a clone of the <a href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Waker.html"><code>Waker</code></a> from the provided <a href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Context.html"><code>Context</code></a>. When the
|
||
file descriptor becomes ready for writing, <a href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Waker.html#method.wake"><code>Waker::wake</code></a> will be called.</p>
|
||
<p>Note that on multiple calls to <a href="../../../tokio/io/unix/struct.AsyncFd.html#method.poll_write_ready"><code>poll_write_ready</code></a> or
|
||
<a href="../../../tokio/io/unix/struct.AsyncFd.html#method.poll_write_ready_mut"><code>poll_write_ready_mut</code></a>, only the <code>Waker</code> from the <code>Context</code> passed to the
|
||
most recent call is scheduled to receive a wakeup. (However,
|
||
<a href="../../../tokio/io/unix/struct.AsyncFd.html#method.poll_read_ready"><code>poll_read_ready</code></a> retains a second, independent waker).</p>
|
||
<p>This method is intended for cases where creating and pinning a future
|
||
via <a href="../../../tokio/io/unix/struct.AsyncFd.html#method.readable"><code>writable</code></a> is not feasible. Where possible, using <a href="../../../tokio/io/unix/struct.AsyncFd.html#method.readable"><code>writable</code></a> is
|
||
preferred, as this supports polling from multiple tasks at once.</p>
|
||
<p>This method takes <code>&self</code>, so it is possible to call this method
|
||
concurrently with other methods on this struct. This method only
|
||
provides shared access to the inner IO resource when handling the
|
||
<a href="../../../tokio/io/unix/struct.AsyncFdReadyGuard.html" title="AsyncFdReadyGuard"><code>AsyncFdReadyGuard</code></a>.</p>
|
||
</div><h4 id="method.poll_write_ready_mut" class="method"><code>pub fn <a href="#method.poll_write_ready_mut" class="fnname">poll_write_ready_mut</a><'a>(<br> &'a mut self, <br> cx: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Context.html" title="struct core::task::wake::Context">Context</a><'_><br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/task/poll/enum.Poll.html" title="enum core::task::poll::Poll">Poll</a><<a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a><<a class="struct" href="../../../tokio/io/unix/struct.AsyncFdReadyMutGuard.html" title="struct tokio::io::unix::AsyncFdReadyMutGuard">AsyncFdReadyMutGuard</a><'a, T>>></code><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#375-386" title="goto source code">[src]</a></h4><div class="docblock"><p>Polls for write readiness.</p>
|
||
<p>If the file descriptor is not currently ready for writing, this method
|
||
will store a clone of the <a href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Waker.html"><code>Waker</code></a> from the provided <a href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Context.html"><code>Context</code></a>. When the
|
||
file descriptor becomes ready for writing, <a href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Waker.html#method.wake"><code>Waker::wake</code></a> will be called.</p>
|
||
<p>Note that on multiple calls to <a href="../../../tokio/io/unix/struct.AsyncFd.html#method.poll_write_ready"><code>poll_write_ready</code></a> or
|
||
<a href="../../../tokio/io/unix/struct.AsyncFd.html#method.poll_write_ready_mut"><code>poll_write_ready_mut</code></a>, only the <code>Waker</code> from the <code>Context</code> passed to the
|
||
most recent call is scheduled to receive a wakeup. (However,
|
||
<a href="../../../tokio/io/unix/struct.AsyncFd.html#method.poll_read_ready"><code>poll_read_ready</code></a> retains a second, independent waker).</p>
|
||
<p>This method is intended for cases where creating and pinning a future
|
||
via <a href="../../../tokio/io/unix/struct.AsyncFd.html#method.readable"><code>writable</code></a> is not feasible. Where possible, using <a href="../../../tokio/io/unix/struct.AsyncFd.html#method.readable"><code>writable</code></a> is
|
||
preferred, as this supports polling from multiple tasks at once.</p>
|
||
<p>This method takes <code>&mut self</code>, so it is possible to access the inner IO
|
||
resource mutably when handling the <a href="../../../tokio/io/unix/struct.AsyncFdReadyMutGuard.html" title="AsyncFdReadyMutGuard"><code>AsyncFdReadyMutGuard</code></a>.</p>
|
||
</div><h4 id="method.readable" class="method"><code>pub async fn <a href="#method.readable" class="fnname">readable</a><'a>(&'a self) -> <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a><<a class="struct" href="../../../tokio/io/unix/struct.AsyncFdReadyGuard.html" title="struct tokio::io::unix::AsyncFdReadyGuard">AsyncFdReadyGuard</a><'a, T>></code><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#418-420" title="goto source code">[src]</a></h4><div class="docblock"><p>Waits for the file descriptor to become readable, returning a
|
||
<a href="../../../tokio/io/unix/struct.AsyncFdReadyGuard.html" title="AsyncFdReadyGuard"><code>AsyncFdReadyGuard</code></a> that must be dropped to resume read-readiness
|
||
polling.</p>
|
||
<p>This method takes <code>&self</code>, so it is possible to call this method
|
||
concurrently with other methods on this struct. This method only
|
||
provides shared access to the inner IO resource when handling the
|
||
<a href="../../../tokio/io/unix/struct.AsyncFdReadyGuard.html" title="AsyncFdReadyGuard"><code>AsyncFdReadyGuard</code></a>.</p>
|
||
</div><h4 id="method.readable_mut" class="method"><code>pub async fn <a href="#method.readable_mut" class="fnname">readable_mut</a><'a>(<br> &'a mut self<br>) -> <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a><<a class="struct" href="../../../tokio/io/unix/struct.AsyncFdReadyMutGuard.html" title="struct tokio::io::unix::AsyncFdReadyMutGuard">AsyncFdReadyMutGuard</a><'a, T>></code><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#429-431" title="goto source code">[src]</a></h4><div class="docblock"><p>Waits for the file descriptor to become readable, returning a
|
||
<a href="../../../tokio/io/unix/struct.AsyncFdReadyMutGuard.html" title="AsyncFdReadyMutGuard"><code>AsyncFdReadyMutGuard</code></a> that must be dropped to resume read-readiness
|
||
polling.</p>
|
||
<p>This method takes <code>&mut self</code>, so it is possible to access the inner IO
|
||
resource mutably when handling the <a href="../../../tokio/io/unix/struct.AsyncFdReadyMutGuard.html" title="AsyncFdReadyMutGuard"><code>AsyncFdReadyMutGuard</code></a>.</p>
|
||
</div><h4 id="method.writable" class="method"><code>pub async fn <a href="#method.writable" class="fnname">writable</a><'a>(&'a self) -> <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a><<a class="struct" href="../../../tokio/io/unix/struct.AsyncFdReadyGuard.html" title="struct tokio::io::unix::AsyncFdReadyGuard">AsyncFdReadyGuard</a><'a, T>></code><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#442-444" title="goto source code">[src]</a></h4><div class="docblock"><p>Waits for the file descriptor to become writable, returning a
|
||
<a href="../../../tokio/io/unix/struct.AsyncFdReadyGuard.html" title="AsyncFdReadyGuard"><code>AsyncFdReadyGuard</code></a> that must be dropped to resume write-readiness
|
||
polling.</p>
|
||
<p>This method takes <code>&self</code>, so it is possible to call this method
|
||
concurrently with other methods on this struct. This method only
|
||
provides shared access to the inner IO resource when handling the
|
||
<a href="../../../tokio/io/unix/struct.AsyncFdReadyGuard.html" title="AsyncFdReadyGuard"><code>AsyncFdReadyGuard</code></a>.</p>
|
||
</div><h4 id="method.writable_mut" class="method"><code>pub async fn <a href="#method.writable_mut" class="fnname">writable_mut</a><'a>(<br> &'a mut self<br>) -> <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a><<a class="struct" href="../../../tokio/io/unix/struct.AsyncFdReadyMutGuard.html" title="struct tokio::io::unix::AsyncFdReadyMutGuard">AsyncFdReadyMutGuard</a><'a, T>></code><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#453-455" title="goto source code">[src]</a></h4><div class="docblock"><p>Waits for the file descriptor to become writable, returning a
|
||
<a href="../../../tokio/io/unix/struct.AsyncFdReadyMutGuard.html" title="AsyncFdReadyMutGuard"><code>AsyncFdReadyMutGuard</code></a> that must be dropped to resume write-readiness
|
||
polling.</p>
|
||
<p>This method takes <code>&mut self</code>, so it is possible to access the inner IO
|
||
resource mutably when handling the <a href="../../../tokio/io/unix/struct.AsyncFdReadyMutGuard.html" title="AsyncFdReadyMutGuard"><code>AsyncFdReadyMutGuard</code></a>.</p>
|
||
</div></div><h2 id="trait-implementations" class="small-section-header">Trait Implementations<a href="#trait-implementations" class="anchor"></a></h2><div id="trait-implementations-list"><h3 id="impl-AsRawFd" class="impl"><code class="in-band">impl<T: <a class="trait" href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.AsRawFd.html" title="trait std::sys::unix::ext::io::AsRawFd">AsRawFd</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.AsRawFd.html" title="trait std::sys::unix::ext::io::AsRawFd">AsRawFd</a> for <a class="struct" href="../../../tokio/io/unix/struct.AsyncFd.html" title="struct tokio::io::unix::AsyncFd">AsyncFd</a><T></code><a href="#impl-AsRawFd" class="anchor"></a><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#458-462" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.as_raw_fd" class="method hidden"><code>fn <a href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.AsRawFd.html#tymethod.as_raw_fd" class="fnname">as_raw_fd</a>(&self) -> <a class="type" href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/type.RawFd.html" title="type std::sys::unix::ext::io::RawFd">RawFd</a></code><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#459-461" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Extracts the raw file descriptor. <a href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.AsRawFd.html#tymethod.as_raw_fd">Read more</a></p>
|
||
</div></div><h3 id="impl-Debug" class="impl"><code class="in-band">impl<T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.AsRawFd.html" title="trait std::sys::unix::ext::io::AsRawFd">AsRawFd</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="../../../tokio/io/unix/struct.AsyncFd.html" title="struct tokio::io::unix::AsyncFd">AsyncFd</a><T></code><a href="#impl-Debug" class="anchor"></a><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#464-470" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.fmt" class="method hidden"><code>fn <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt" class="fnname">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#465-469" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
|
||
</div></div><h3 id="impl-Drop" class="impl"><code class="in-band">impl<T: <a class="trait" href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.AsRawFd.html" title="trait std::sys::unix::ext::io::AsRawFd">AsRawFd</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html" title="trait core::ops::drop::Drop">Drop</a> for <a class="struct" href="../../../tokio/io/unix/struct.AsyncFd.html" title="struct tokio::io::unix::AsyncFd">AsyncFd</a><T></code><a href="#impl-Drop" class="anchor"></a><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#472-476" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.drop" class="method hidden"><code>fn <a href="https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html#tymethod.drop" class="fnname">drop</a>(&mut self)</code><a class="srclink" href="../../../src/tokio/io/async_fd.rs.html#473-475" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Executes the destructor for this type. <a href="https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html#tymethod.drop">Read more</a></p>
|
||
</div></div></div><h2 id="synthetic-implementations" class="small-section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor"></a></h2><div id="synthetic-implementations-list"><h3 id="impl-RefUnwindSafe" class="impl"><code class="in-band">impl<T> !<a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.RefUnwindSafe.html" title="trait std::panic::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="../../../tokio/io/unix/struct.AsyncFd.html" title="struct tokio::io::unix::AsyncFd">AsyncFd</a><T></code><a href="#impl-RefUnwindSafe" class="anchor"></a></h3><div class="impl-items"></div><h3 id="impl-Send" class="impl"><code class="in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="../../../tokio/io/unix/struct.AsyncFd.html" title="struct tokio::io::unix::AsyncFd">AsyncFd</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>, </span></code><a href="#impl-Send" class="anchor"></a></h3><div class="impl-items"></div><h3 id="impl-Sync" class="impl"><code class="in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="../../../tokio/io/unix/struct.AsyncFd.html" title="struct tokio::io::unix::AsyncFd">AsyncFd</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>, </span></code><a href="#impl-Sync" class="anchor"></a></h3><div class="impl-items"></div><h3 id="impl-Unpin" class="impl"><code class="in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="../../../tokio/io/unix/struct.AsyncFd.html" title="struct tokio::io::unix::AsyncFd">AsyncFd</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a>, </span></code><a href="#impl-Unpin" class="anchor"></a></h3><div class="impl-items"></div><h3 id="impl-UnwindSafe" class="impl"><code class="in-band">impl<T> !<a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.UnwindSafe.html" title="trait std::panic::UnwindSafe">UnwindSafe</a> for <a class="struct" href="../../../tokio/io/unix/struct.AsyncFd.html" title="struct tokio::io::unix::AsyncFd">AsyncFd</a><T></code><a href="#impl-UnwindSafe" class="anchor"></a></h3><div class="impl-items"></div></div><h2 id="blanket-implementations" class="small-section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor"></a></h2><div id="blanket-implementations-list"><h3 id="impl-Any" class="impl"><code class="in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T <span class="where fmt-newline">where<br> T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code><a href="#impl-Any" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#108-112" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.type_id" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id" class="fnname">type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#109-111" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id">Read more</a></p>
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</div></div><h3 id="impl-Borrow%3CT%3E" class="impl"><code class="in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><T> for T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code><a href="#impl-Borrow%3CT%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#210-214" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.borrow" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow" class="fnname">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T<span class="notable-traits"><span class="notable-traits-tooltip">ⓘ<div class="notable-traits-tooltiptext"><span class="docblock"><h3 class="notable">Notable traits for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'_ mut </a>F</h3><code class="content"><span class="where fmt-newline">impl<'_, F> <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'_ mut </a>F <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></span><span class="where fmt-newline"> type <a href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" class="type">Output</a> = <F as <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>;</span></code></span></div></span></span></code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#211-213" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></p>
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</div></div><h3 id="impl-BorrowMut%3CT%3E" class="impl"><code class="in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code><a href="#impl-BorrowMut%3CT%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#217-221" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.borrow_mut" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fnname">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T<span class="notable-traits"><span class="notable-traits-tooltip">ⓘ<div class="notable-traits-tooltiptext"><span class="docblock"><h3 class="notable">Notable traits for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'_ mut </a>F</h3><code class="content"><span class="where fmt-newline">impl<'_, F> <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'_ mut </a>F <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></span><span class="where fmt-newline"> type <a href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" class="type">Output</a> = <F as <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>;</span></code></span></div></span></span></code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#218-220" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></p>
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</div></div><h3 id="impl-From%3CT%3E" class="impl"><code class="in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for T</code><a href="#impl-From%3CT%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#552-556" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.from" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from" class="fnname">from</a>(t: T) -> T</code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#553-555" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
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</div></div><h3 id="impl-Into%3CU%3E" class="impl"><code class="in-band">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T>, </span></code><a href="#impl-Into%3CU%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#541-548" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.into" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html#tymethod.into" class="fnname">into</a>(self) -> U</code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#545-547" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
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</div></div><h3 id="impl-TryFrom%3CU%3E" class="impl"><code class="in-band">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>, </span></code><a href="#impl-TryFrom%3CU%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#589-598" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="associatedtype.Error" class="type"><code>type <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" class="type">Error</a> = <a class="enum" href="https://doc.rust-lang.org/nightly/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
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</div><h4 id="method.try_from" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#tymethod.try_from" class="fnname">try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#595-597" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
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</div></div><h3 id="impl-TryInto%3CU%3E" class="impl"><code class="in-band">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>, </span></code><a href="#impl-TryInto%3CU%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#575-584" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="associatedtype.Error-1" class="type"><code>type <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error" class="type">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
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</div><h4 id="method.try_into" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#tymethod.try_into" class="fnname">try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#581-583" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
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