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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 `aio_cancel_all` fn in crate `nix`."><meta name="keywords" content="rust, rustlang, rust-lang, aio_cancel_all"><title>nix::sys::aio::aio_cancel_all - 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="../../../dark.css"><link rel="stylesheet" type="text/css" href="../../../light.css" id="themeStyle"><script src="../../../storage.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="shortcut icon" href="../../../favicon.ico"><style type="text/css">#crate-search{background-image:url("../../../down-arrow.svg");}</style></head><body class="rustdoc fn"><!--[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='../../../nix/index.html'><div class='logo-container'><img src='../../../rust-logo.png' alt='logo'></div></a><div class="sidebar-elems"><p class='location'><a href='../../index.html'>nix</a>::<wbr><a href='../index.html'>sys</a>::<wbr><a href='index.html'>aio</a></p><script>window.sidebarCurrent = {name: 'aio_cancel_all', ty: 'fn', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><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/nix/sys/aio.rs.html#962-970' title='goto source code'>[src]</a></span><span class='in-band'>Function <a href='../../index.html'>nix</a>::<wbr><a href='../index.html'>sys</a>::<wbr><a href='index.html'>aio</a>::<wbr><a class="fn" href=''>aio_cancel_all</a></span></h1><pre class='rust fn'>pub fn aio_cancel_all(fd: <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>) -> <a class="type" href="../../../nix/type.Result.html" title="type nix::Result">Result</a><<a class="enum" href="../../../nix/sys/aio/enum.AioCancelStat.html" title="enum nix::sys::aio::AioCancelStat">AioCancelStat</a>></pre><div class='docblock'><p>Cancels outstanding AIO requests for a given file descriptor.</p>
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<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
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<p>Issue an aio operation, then cancel all outstanding operations on that file
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descriptor.</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered">
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<span class="kw">let</span> <span class="ident">wbuf</span> <span class="op">=</span> <span class="string">b"CDEF"</span>;
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<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">f</span> <span class="op">=</span> <span class="ident">tempfile</span>().<span class="ident">unwrap</span>();
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<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">aiocb</span> <span class="op">=</span> <span class="ident">AioCb</span>::<span class="ident">from_slice</span>( <span class="ident">f</span>.<span class="ident">as_raw_fd</span>(),
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<span class="number">2</span>, <span class="comment">//offset</span>
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<span class="kw-2">&</span><span class="ident">wbuf</span>[..],
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<span class="number">0</span>, <span class="comment">//priority</span>
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<span class="ident">SigevNotify</span>::<span class="ident">SigevNone</span>,
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<span class="ident">LioOpcode</span>::<span class="ident">LIO_NOP</span>);
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<span class="ident">aiocb</span>.<span class="ident">write</span>().<span class="ident">unwrap</span>();
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<span class="kw">let</span> <span class="ident">cs</span> <span class="op">=</span> <span class="ident">aio_cancel_all</span>(<span class="ident">f</span>.<span class="ident">as_raw_fd</span>()).<span class="ident">unwrap</span>();
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<span class="kw">if</span> <span class="ident">cs</span> <span class="op">=</span><span class="op">=</span> <span class="ident">AioCancelStat</span>::<span class="ident">AioNotCanceled</span> {
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<span class="kw">while</span> (<span class="ident">aiocb</span>.<span class="ident">error</span>() <span class="op">=</span><span class="op">=</span> <span class="prelude-val">Err</span>(<span class="ident">Error</span>::<span class="ident">from</span>(<span class="ident">Errno</span>::<span class="ident">EINPROGRESS</span>))) {
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<span class="ident">thread</span>::<span class="ident">sleep</span>(<span class="ident">time</span>::<span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="number">10</span>));
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}
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}
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<span class="comment">// Must call `aio_return`, but ignore the result</span>
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<span class="kw">let</span> <span class="kw">_</span> <span class="op">=</span> <span class="ident">aiocb</span>.<span class="ident">aio_return</span>();</pre></div>
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<h1 id="references" class="section-header"><a href="#references">References</a></h1>
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<p><a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/aio_cancel.html"><code>aio_cancel</code></a></p>
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