<!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="Source to the Rust file `/home/mrh/.cargo/registry/src/github.com-1ecc6299db9ec823/crossbeam-utils-0.6.5/src/lib.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>lib.rs.html -- source</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 source"><!--[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='../../crossbeam_utils/index.html'><div class='logo-container'><img src='../../rust-logo.png' alt='logo'></div></a></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"><pre class="line-numbers"><span id="1"> 1</span>
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</pre><div class="example-wrap"><pre class="rust ">
<span class="doccomment">//! Miscellaneous tools for concurrent programming.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ## Atomics</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! * [`AtomicCell`], a thread-safe mutable memory location.</span>
<span class="doccomment">//! * [`AtomicConsume`], for reading from primitive atomic types with "consume" ordering.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ## Thread synchronization</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! * [`Parker`], a thread parking primitive.</span>
<span class="doccomment">//! * [`ShardedLock`], a sharded reader-writer lock with fast concurrent reads.</span>
<span class="doccomment">//! * [`WaitGroup`], for synchronizing the beginning or end of some computation.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ## Utilities</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! * [`Backoff`], for exponential backoff in spin loops.</span>
<span class="doccomment">//! * [`CachePadded`], for padding and aligning a value to the length of a cache line.</span>
<span class="doccomment">//! * [`scope`], for spawning threads that borrow local variables from the stack.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! [`AtomicCell`]: atomic/struct.AtomicCell.html</span>
<span class="doccomment">//! [`AtomicConsume`]: atomic/trait.AtomicConsume.html</span>
<span class="doccomment">//! [`Parker`]: sync/struct.Parker.html</span>
<span class="doccomment">//! [`ShardedLock`]: sync/struct.ShardedLock.html</span>
<span class="doccomment">//! [`WaitGroup`]: sync/struct.WaitGroup.html</span>
<span class="doccomment">//! [`Backoff`]: struct.Backoff.html</span>
<span class="doccomment">//! [`CachePadded`]: struct.CachePadded.html</span>
<span class="doccomment">//! [`scope`]: thread/fn.scope.html</span>
<span class="attribute">#![<span class="ident">warn</span>(<span class="ident">missing_docs</span>)]</span>
<span class="attribute">#![<span class="ident">warn</span>(<span class="ident">missing_debug_implementations</span>)]</span>
<span class="attribute">#![<span class="ident">cfg_attr</span>(<span class="ident">not</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"std"</span>), <span class="ident">no_std</span>)]</span>
<span class="attribute">#![<span class="ident">cfg_attr</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"nightly"</span>, <span class="ident">feature</span>(<span class="ident">alloc</span>))]</span>
<span class="attribute">#![<span class="ident">cfg_attr</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"nightly"</span>, <span class="ident">feature</span>(<span class="ident">cfg_target_has_atomic</span>))]</span>
<span class="attribute">#[<span class="ident">macro_use</span>]</span>
<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">cfg_if</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"std"</span>)]</span>
<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">core</span>;
<span class="macro">cfg_if</span><span class="macro">!</span> {
<span class="kw">if</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"nightly"</span>)]</span> {
<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">alloc</span>;
} <span class="kw">else</span> {
<span class="kw">mod</span> <span class="ident">alloc</span> {
<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">std</span>;
<span class="kw">pub</span> <span class="kw">use</span> <span class="self">self</span>::<span class="ident">std</span>::<span class="kw-2">*</span>;
}
}
}
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">atomic</span>;
<span class="kw">mod</span> <span class="ident">cache_padded</span>;
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident">cache_padded</span>::<span class="ident">CachePadded</span>;
<span class="kw">mod</span> <span class="ident">backoff</span>;
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident">backoff</span>::<span class="ident">Backoff</span>;
<span class="macro">cfg_if</span><span class="macro">!</span> {
<span class="kw">if</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"std"</span>)]</span> {
<span class="attribute">#[<span class="ident">macro_use</span>]</span>
<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">lazy_static</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">sync</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">thread</span>;
}
}
</pre></div>
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