<!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 `Executor` trait in crate `core`."><meta name="keywords" content="rust, rustlang, rust-lang, Executor"><title>core::task::Executor - 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><link rel="shortcut icon" href="https://doc.rust-lang.org/favicon.ico"></head><body class="rustdoc trait"><!--[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='../../core/index.html'><img src='https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png' alt='logo' width='100'></a><p class='location'>Trait Executor</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.spawn_obj">spawn_obj</a></div><a class="sidebar-title" href="#provided-methods">Provided Methods</a><div class="sidebar-links"><a href="#method.status">status</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class='location'><a href='../index.html'>core</a>::<wbr><a href='index.html'>task</a></p><script>window.sidebarCurrent = {name: 'Executor', ty: 'trait', 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"><input class="search-input" name="search" autocomplete="off" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><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='in-band'>Trait <a href='../index.html'>core</a>::<wbr><a href='index.html'>task</a>::<wbr><a class="trait" href=''>Executor</a></span><span class='out-of-band'><span class='since' title='Stable since Rust version '></span><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/core/task.rs.html#434-454' title='goto source code'>[src]</a></span></h1><div class="docblock type-decl"><pre class='rust trait'>pub trait Executor {
fn <a href='#tymethod.spawn_obj' class='fnname'>spawn_obj</a>(&mut self, task: <a class="struct" href="../../core/task/struct.TaskObj.html" title="struct core::task::TaskObj">TaskObj</a>) -> <a class="enum" href="../../core/result/enum.Result.html" title="enum core::result::Result">Result</a><(), <a class="struct" href="../../core/task/struct.SpawnObjError.html" title="struct core::task::SpawnObjError">SpawnObjError</a>>;
fn <a href='#method.status' class='fnname'>status</a>(&self) -> <a class="enum" href="../../core/result/enum.Result.html" title="enum core::result::Result">Result</a><(), <a class="struct" href="../../core/task/struct.SpawnErrorKind.html" title="struct core::task::SpawnErrorKind">SpawnErrorKind</a>> { ... }
}</pre></div><div class='stability'><div class='stab unstable'><details><summary><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>futures_api </code><a href="https://github.com/rust-lang/rust/issues/50547">#50547</a>)</summary><p>futures in libcore are unstable</p>
</details></div></div><div class='docblock'><p>A task executor.</p>
<p>A <em>task</em> is a <code>()</code>-producing async value that runs at the top level, and will
be <code>poll</code>ed until completion. It's also the unit at which wake-up
notifications occur. Executors, such as thread pools, allow tasks to be
spawned and are responsible for putting tasks onto ready queues when
they are woken up, and polling them when they are ready.</p>
</div>
<h2 id='required-methods' class='small-section-header'>
Required Methods<a href='#required-methods' class='anchor'></a>
</h2>
<div class='methods'>
<h3 id='tymethod.spawn_obj' class='method'><span id='spawn_obj.v' class='invisible'><code>fn <a href='#tymethod.spawn_obj' class='fnname'>spawn_obj</a>(&mut self, task: <a class="struct" href="../../core/task/struct.TaskObj.html" title="struct core::task::TaskObj">TaskObj</a>) -> <a class="enum" href="../../core/result/enum.Result.html" title="enum core::result::Result">Result</a><(), <a class="struct" href="../../core/task/struct.SpawnObjError.html" title="struct core::task::SpawnObjError">SpawnObjError</a>></code></span></h3><div class='stability'><div class='stab unstable'><details><summary><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>futures_api </code><a href="https://github.com/rust-lang/rust/issues/50547">#50547</a>)</summary><p>futures in libcore are unstable</p>
</details></div></div><div class='docblock'><p>Spawn the given task, polling it until completion.</p>
<h1 id="errors" class="section-header"><a href="#errors">Errors</a></h1>
<p>The executor may be unable to spawn tasks, either because it has
been shut down or is resource-constrained.</p>
</div></div>
<h2 id='provided-methods' class='small-section-header'>
Provided Methods<a href='#provided-methods' class='anchor'></a>
</h2>
<div class='methods'>
<h3 id='method.status' class='method'><span id='status.v' class='invisible'><code>fn <a href='#method.status' class='fnname'>status</a>(&self) -> <a class="enum" href="../../core/result/enum.Result.html" title="enum core::result::Result">Result</a><(), <a class="struct" href="../../core/task/struct.SpawnErrorKind.html" title="struct core::task::SpawnErrorKind">SpawnErrorKind</a>></code></span></h3><div class='stability'><div class='stab unstable'><details><summary><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>futures_api </code><a href="https://github.com/rust-lang/rust/issues/50547">#50547</a>)</summary><p>futures in libcore are unstable</p>
</details></div></div><div class='docblock'><p>Determine whether the executor is able to spawn new tasks.</p>
<h1 id="returns" class="section-header"><a href="#returns">Returns</a></h1>
<p>An <code>Ok</code> return means the executor is <em>likely</em> (but not guaranteed)
to accept a subsequent spawn attempt. Likewise, an <code>Err</code> return
means that <code>spawn</code> is likely, but not guaranteed, to yield an error.</p>
</div></div>
<h2 id='implementors' class='small-section-header'>
Implementors<a href='#implementors' class='anchor'></a>
</h2>
<ul class='item-list' id='implementors-list'>
</ul><script type="text/javascript">window.inlined_types=new Set([]);</script><script type="text/javascript" async
src="../../implementors/core/task/trait.Executor.js">
</script></section><section id="search" class="content hidden"></section><section class="footer"></section><aside id="help" class="hidden"><div><h1 class="hidden">Help</h1><div class="shortcuts"><h2>Keyboard Shortcuts</h2><dl><dt><kbd>?</kbd></dt><dd>Show this help dialog</dd><dt><kbd>S</kbd></dt><dd>Focus the search field</dd><dt><kbd>↑</kbd></dt><dd>Move up in search results</dd><dt><kbd>↓</kbd></dt><dd>Move down in search results</dd><dt><kbd>↹</kbd></dt><dd>Switch tab</dd><dt><kbd>⏎</kbd></dt><dd>Go to active search result</dd><dt><kbd>+</kbd></dt><dd>Expand all sections</dd><dt><kbd>-</kbd></dt><dd>Collapse all sections</dd></dl></div><div class="infos"><h2>Search Tricks</h2><p>Prefix searches with a type followed by a colon (e.g. <code>fn:</code>) to restrict the search to a given type.</p><p>Accepted types are: <code>fn</code>, <code>mod</code>, <code>struct</code>, <code>enum</code>, <code>trait</code>, <code>type</code>, <code>macro</code>, and <code>const</code>.</p><p>Search functions by type signature (e.g. <code>vec -> usize</code> or <code>* -> vec</code>)</p><p>Search multiple things at once by splitting your query with comma (e.g. <code>str,u8</code> or <code>String,struct:Vec,test</code>)</p></div></div></aside><script>window.rootPath = "../../";window.currentCrate = "core";</script><script src="../../aliases.js"></script><script src="../../main.js"></script><script defer src="../../search-index.js"></script></body></html>
distrib
>
Mageia
>
6
>
armv7hl
>
media
>
core-updates
>
by-pkgid
>
4e2dbb669434a7691662cb2f0ad38972
>
files
>
10473
