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24 lines
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<!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="Additional methods for mutexes which support fair unlocking."><meta name="keywords" content="rust, rustlang, rust-lang, RawMutexFair"><title>RawMutexFair in lock_api - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Semibold.ttf.woff2"><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="../ayu.css" disabled><link rel="stylesheet" type="text/css" href="../dark.css" disabled><link rel="stylesheet" type="text/css" href="../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../storage.js"></script><script src="../crates.js"></script><script defer src="../main.js"></script>
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</a><h2 class="location">Trait RawMutexFair</h2><div class="sidebar-elems"><div class="block items"><h3 class="sidebar-title"><a href="#required-methods">Required Methods</a></h3><div class="sidebar-links"><a href="#tymethod.unlock_fair">unlock_fair</a></div><h3 class="sidebar-title"><a href="#provided-methods">Provided Methods</a></h3><div class="sidebar-links"><a href="#method.bump">bump</a></div><h3 class="sidebar-title"><a href="#implementors">Implementors</a></h3></div><h2 class="location">Other items in<br><a href="index.html">lock_api</a></h2><div id="sidebar-vars" data-name="RawMutexFair" data-ty="trait" data-relpath=""></div><script defer src="sidebar-items.js"></script></div></nav><main><div class="width-limiter"><div class="sub-container"><a class="sub-logo-container" href="../lock_api/index.html"><img class="rust-logo" src="../rust-logo.png" alt="logo"></a><nav class="sub"><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="18" height="18" alt="Pick another theme!" src="../brush.svg"></button><div id="theme-choices" role="menu"></div></div><form class="search-form"><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><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../settings.html" title="settings"><img width="18" height="18" alt="Change settings" src="../wheel.svg"></a></div></form></nav></div><section id="main-content" class="content"><h1 class="fqn"><span class="in-band">Trait <a href="index.html">lock_api</a>::<wbr><a class="trait" href="#">RawMutexFair</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../clipboard.svg" width="19" height="18" alt="Copy item path"></button></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/lock_api/mutex.rs.html#87-114" title="goto source code">[src]</a></span></h1><div class="docblock item-decl"><pre class="rust trait"><code>pub unsafe trait RawMutexFair: <a class="trait" href="trait.RawMutex.html" title="trait lock_api::RawMutex">RawMutex</a> {
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unsafe fn <a href="#tymethod.unlock_fair" class="fnname">unlock_fair</a>(&self);
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unsafe fn <a href="#method.bump" class="fnname">bump</a>(&self) { ... }
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}</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Additional methods for mutexes which support fair unlocking.</p>
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<p>Fair unlocking means that a lock is handed directly over to the next waiting
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thread if there is one, without giving other threads the opportunity to
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“steal” the lock in the meantime. This is typically slower than unfair
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unlocking, but may be necessary in certain circumstances.</p>
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</div></details><h2 id="required-methods" class="small-section-header">Required methods<a href="#required-methods" class="anchor"></a></h2><div class="methods"><details class="rustdoc-toggle" open><summary><div id="tymethod.unlock_fair" class="method has-srclink"><div class="rightside"><a class="srclink" href="../src/lock_api/mutex.rs.html#96" title="goto source code">[src]</a></div><h4 class="code-header">unsafe fn <a href="#tymethod.unlock_fair" class="fnname">unlock_fair</a>(&self)</h4></div></summary><div class="docblock"><p>Unlocks this mutex using a fair unlock protocol.</p>
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<h5 id="safety" class="section-header"><a href="#safety">Safety</a></h5>
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<p>This method may only be called if the mutex is held in the current context, see
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the documentation of <a href="trait.RawMutex.html#tymethod.unlock"><code>unlock</code></a>.</p>
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</div></details></div><h2 id="provided-methods" class="small-section-header">Provided methods<a href="#provided-methods" class="anchor"></a></h2><div class="methods"><details class="rustdoc-toggle" open><summary><div id="method.bump" class="method has-srclink"><div class="rightside"><a class="srclink" href="../src/lock_api/mutex.rs.html#110-113" title="goto source code">[src]</a></div><h4 class="code-header">unsafe fn <a href="#method.bump" class="fnname">bump</a>(&self)</h4></div></summary><div class="docblock"><p>Temporarily yields the mutex to a waiting thread if there is one.</p>
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<p>This method is functionally equivalent to calling <code>unlock_fair</code> followed
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by <code>lock</code>, however it can be much more efficient in the case where there
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are no waiting threads.</p>
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<h5 id="safety-1" class="section-header"><a href="#safety-1">Safety</a></h5>
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<p>This method may only be called if the mutex is held in the current context, see
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the documentation of <a href="trait.RawMutex.html#tymethod.unlock"><code>unlock</code></a>.</p>
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</div></details></div><h2 id="implementors" class="small-section-header">Implementors<a href="#implementors" class="anchor"></a></h2><div class="item-list" id="implementors-list"></div><script type="text/javascript" src="../implementors/lock_api/trait.RawMutexFair.js" async></script></section><section id="search" class="content hidden"></section></div></main><div id="rustdoc-vars" data-root-path="../" data-current-crate="lock_api" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.59.0 (9d1b2106e 2022-02-23)" ></div>
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