145 lines
No EOL
6.4 KiB
HTML
145 lines
No EOL
6.4 KiB
HTML
<!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 `with_unpark_event` fn in crate `tokio`.">
|
||
<meta name="keywords" content="rust, rustlang, rust-lang, with_unpark_event">
|
||
|
||
<title>tokio::prelude::task::with_unpark_event - 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">☰</div>
|
||
|
||
<p class='location'><a href='../../index.html'>tokio</a>::<wbr><a href='../index.html'>prelude</a>::<wbr><a href='index.html'>task</a></p><script>window.sidebarCurrent = {name: 'with_unpark_event', 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'>tokio</a>::<wbr><a href='../index.html'>prelude</a>::<wbr><a href='index.html'>task</a>::<wbr><a class="fn" href=''>with_unpark_event</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'>−</span>]
|
||
</a>
|
||
</span><a class='srclink' href='../../../src/futures/task_impl/std/mod.rs.html#596-609' title='goto source code'>[src]</a></span></h1>
|
||
<pre class='rust fn'>pub fn with_unpark_event<F, R>(event: <a class="struct" href="../../../tokio/prelude/task/struct.UnparkEvent.html" title="struct tokio::prelude::task::UnparkEvent">UnparkEvent</a>, f: F) -> R <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>() -> R, </span></pre><div class='stability'><div class='stab deprecated'>Deprecated<p>: recommended to use <code>FuturesUnordered</code> instead</p>
|
||
</div></div><div class='docblock'><p>For the duration of the given callback, add an "unpark event" to be
|
||
triggered when the task handle is used to unpark the task.</p>
|
||
<p>Unpark events are used to pass information about what event caused a task to
|
||
be unparked. In some cases, tasks are waiting on a large number of possible
|
||
events, and need precise information about the wakeup to avoid extraneous
|
||
polling.</p>
|
||
<p>Every <code>Task</code> handle comes with a set of unpark events which will fire when
|
||
<code>unpark</code> is called. When fired, these events insert an identifier into a
|
||
concurrent set, which the task can read from to determine what events
|
||
occurred.</p>
|
||
<p>This function immediately invokes the closure, <code>f</code>, but arranges things so
|
||
that <code>task::park</code> will produce a <code>Task</code> handle that includes the given
|
||
unpark event.</p>
|
||
<h1 id="panics" class="section-header"><a href="#panics">Panics</a></h1>
|
||
<p>This function will panic if a task is not currently being executed. That
|
||
is, this method can be dangerous to call outside of an implementation of
|
||
<code>poll</code>.</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>⏎</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 = "tokio";
|
||
</script>
|
||
<script src="../../../main.js"></script>
|
||
<script defer src="../../../search-index.js"></script>
|
||
</body>
|
||
</html> |