<!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 `Send` trait in crate `core`.">
<meta name="keywords" content="rust, rustlang, rust-lang, Send">
<title>core::marker::Send - 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>
<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 Send</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#implementors">Implementors</a></div><p class='location'><a href='../index.html'>core</a>::<wbr><a href='index.html'>marker</a></p><script>window.sidebarCurrent = {name: 'Send', 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">
</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'>marker</a>::<wbr><a class="trait" href=''>Send</a></span><span class='out-of-band'><span class='since' title='Stable since Rust version 1.0.0'>1.0.0</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/marker.rs.html#43-45' title='goto source code'>[src]</a></span></h1>
<pre class='rust trait'>pub unsafe auto trait Send { }</pre><div class='docblock'><p>Types that can be transferred across thread boundaries.</p>
<p>This trait is automatically implemented when the compiler determines it's
appropriate.</p>
<p>An example of a non-<code>Send</code> type is the reference-counting pointer
<a href="../../std/rc/struct.Rc.html"><code>rc::Rc</code></a>. If two threads attempt to clone <a href="../../std/rc/struct.Rc.html"><code>Rc</code></a>s that point to the same
reference-counted value, they might try to update the reference count at the
same time, which is <a href="../../reference/behavior-considered-undefined.html">undefined behavior</a> because <a href="../../std/rc/struct.Rc.html"><code>Rc</code></a> doesn't use atomic
operations. Its cousin <a href="../../std/sync/struct.Arc.html"><code>sync::Arc</code></a> does use atomic operations (incurring
some overhead) and thus is <code>Send</code>.</p>
<p>See <a href="../../nomicon/send-and-sync.html">the Nomicon</a> for more details.</p>
</div>
<h2 id='implementors' class='small-section-header'>
Implementors<a href='#implementors' class='anchor'></a>
</h2>
<ul class='item-list' id='implementors-list'>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/ptr.rs.html#2358' title='goto source code'>[src]</a></div><code>impl<T: <a class="trait" href="../../core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> Send for <a class="struct" href="../../core/ptr/struct.Unique.html" title="struct core::ptr::Unique">Unique</a><T></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/ptr.rs.html#2493' title='goto source code'>[src]</a></div><code>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> !Send for <a class="struct" href="../../core/ptr/struct.NonNull.html" title="struct core::ptr::NonNull">NonNull</a><T></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/marker.rs.html#546' title='goto source code'>[src]</a></div><code>impl<'a, T: <a class="trait" href="../../core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> Send for &'a T</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/marker.rs.html#548' title='goto source code'>[src]</a></div><code>impl<'a, T: <a class="trait" href="../../core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> Send for &'a mut T</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/marker.rs.html#48' title='goto source code'>[src]</a></div><code>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> !Send for *const T</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/marker.rs.html#50' title='goto source code'>[src]</a></div><code>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> !Send for *mut T</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/sync/atomic.rs.html#164' title='goto source code'>[src]</a></div><code>impl<T> Send for <a class="struct" href="../../core/sync/atomic/struct.AtomicPtr.html" title="struct core::sync::atomic::AtomicPtr">AtomicPtr</a><T></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/cell.rs.html#245' title='goto source code'>[src]</a></div><code>impl<T> Send for <a class="struct" href="../../core/cell/struct.Cell.html" title="struct core::cell::Cell">Cell</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>, </span></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/cell.rs.html#859' title='goto source code'>[src]</a></div><code>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> Send for <a class="struct" href="../../core/cell/struct.RefCell.html" title="struct core::cell::RefCell">RefCell</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>, </span></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/slice/mod.rs.html#1408' title='goto source code'>[src]</a></div><code>impl<'a, T: <a class="trait" href="../../core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>> Send for <a class="struct" href="../../core/slice/struct.Iter.html" title="struct core::slice::Iter">Iter</a><'a, T></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/slice/mod.rs.html#1525' title='goto source code'>[src]</a></div><code>impl<'a, T: <a class="trait" href="../../core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>> Send for <a class="struct" href="../../core/slice/struct.IterMut.html" title="struct core::slice::IterMut">IterMut</a><'a, T></code></li>
</ul><script type="text/javascript" async
src="../../implementors/core/marker/trait.Send.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>
</div>
</div>
</aside>
<script>
window.rootPath = "../../";
window.currentCrate = "core";
</script>
<script src="../../main.js"></script>
<script defer src="../../search-index.js"></script>
</body>
</html>
distrib
>
Mageia
>
6
>
x86_64
>
media
>
core-updates
>
by-pkgid
>
fdedb3cf2140df9b6d419a2338ab1caa
>
files
>
1697
