mentat/futures/unsync/oneshot/fn.spawn.html
2018-08-22 17:04:13 +00:00

143 lines
No EOL
7 KiB
HTML
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<!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 `spawn` fn in crate `futures`.">
<meta name="keywords" content="rust, rustlang, rust-lang, spawn">
<title>futures::unsync::oneshot::spawn - 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="../../../main.css" id="themeStyle">
<script src="../../../storage.js"></script>
</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">&#9776;</div>
<p class='location'><a href='../../index.html'>futures</a>::<wbr><a href='../index.html'>unsync</a>::<wbr><a href='index.html'>oneshot</a></p><script>window.sidebarCurrent = {name: 'spawn', ty: 'fn', relpath: ''};</script><script defer src="sidebar-items.js"></script>
</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">
</div>
</form>
</nav>
<section id='main' class="content">
<h1 class='fqn'><span class='in-band'>Function <a href='../../index.html'>futures</a>::<wbr><a href='../index.html'>unsync</a>::<wbr><a href='index.html'>oneshot</a>::<wbr><a class="fn" href=''>spawn</a></span><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'>&#x2212;</span>]
</a>
</span><a class='srclink' href='../../../src/futures/unsync/oneshot.rs.html#259-274' title='goto source code'>[src]</a></span></h1>
<pre class='rust fn'>pub fn spawn&lt;F, E&gt;(future: F, executor: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>E) -&gt; <a class="struct" href="../../../futures/unsync/oneshot/struct.SpawnHandle.html" title="struct futures::unsync::oneshot::SpawnHandle">SpawnHandle</a>&lt;F::<a class="type" href="../../../futures/future/trait.Future.html#associatedtype.Item" title="type futures::future::Future::Item">Item</a>, F::<a class="type" href="../../../futures/future/trait.Future.html#associatedtype.Error" title="type futures::future::Future::Error">Error</a>&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;F: <a class="trait" href="../../../futures/future/trait.Future.html" title="trait futures::future::Future">Future</a>,<br>&nbsp;&nbsp;&nbsp;&nbsp;E: <a class="trait" href="../../../futures/future/trait.Executor.html" title="trait futures::future::Executor">Executor</a>&lt;<a class="struct" href="../../../futures/unsync/oneshot/struct.Execute.html" title="struct futures::unsync::oneshot::Execute">Execute</a>&lt;F&gt;&gt;,&nbsp;</span></pre><div class='docblock'><p>Spawns a <code>future</code> onto the instance of <code>Executor</code> provided, <code>executor</code>,
returning a handle representing the completion of the future.</p>
<p>The <code>SpawnHandle</code> returned is a future that is a proxy for <code>future</code> itself.
When <code>future</code> completes on <code>executor</code> then the <code>SpawnHandle</code> will itself be
resolved. Internally <code>SpawnHandle</code> contains a <code>oneshot</code> channel and is
thus not safe to send across threads.</p>
<p>The <code>future</code> will be canceled if the <code>SpawnHandle</code> is dropped. If this is
not desired then the <code>SpawnHandle::forget</code> function can be used to continue
running the future to completion.</p>
<h1 id="panics" class="section-header"><a href="#panics">Panics</a></h1>
<p>This function will panic if the instance of <code>Spawn</code> provided is unable to
spawn the <code>future</code> provided.</p>
<p>If the provided instance of <code>Spawn</code> does not actually run <code>future</code> to
completion, then the returned handle may panic when polled. Typically this
is not a problem, though, as most instances of <code>Spawn</code> will run futures to
completion.</p>
</div></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>&#9166;</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>
</div>
</div>
</aside>
<script>
window.rootPath = "../../../";
window.currentCrate = "futures";
</script>
<script src="../../../main.js"></script>
<script defer src="../../../search-index.js"></script>
</body>
</html>