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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="API documentation for the Rust `RawRwLockUpgradeFair` trait in crate `lock_api`."><meta name="keywords" content="rust, rustlang, rust-lang, RawRwLockUpgradeFair"><title>lock_api::RawRwLockUpgradeFair - 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="../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 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='../lock_api/index.html'><div class='logo-container'><img src='../rust-logo.png' alt='logo'></div></a><p class='location'>Trait RawRwLockUpgradeFair</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.unlock_upgradable_fair">unlock_upgradable_fair</a></div><a class="sidebar-title" href="#provided-methods">Provided Methods</a><div class="sidebar-links"><a href="#method.bump_upgradable">bump_upgradable</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class='location'><a href='index.html'>lock_api</a></p><script>window.sidebarCurrent = {name: 'RawRwLockUpgradeFair', 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"><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"><h1 class='fqn'><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/rwlock.rs.html#173-186' title='goto source code'>[src]</a></span><span class='in-band'>Trait <a href='index.html'>lock_api</a>::<wbr><a class="trait" href=''>RawRwLockUpgradeFair</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class='rust trait'>pub unsafe trait RawRwLockUpgradeFair: <a class="trait" href="../lock_api/trait.RawRwLockUpgrade.html" title="trait lock_api::RawRwLockUpgrade">RawRwLockUpgrade</a> + <a class="trait" href="../lock_api/trait.RawRwLockFair.html" title="trait lock_api::RawRwLockFair">RawRwLockFair</a> {
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fn <a href='#tymethod.unlock_upgradable_fair' class='fnname'>unlock_upgradable_fair</a>(&self);
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fn <a href='#method.bump_upgradable' class='fnname'>bump_upgradable</a>(&self) { ... }
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}</pre></div><div class='docblock'><p>Additional methods for RwLocks which support upgradable locks and fair
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unlocking.</p>
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</div>
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<h2 id='required-methods' class='small-section-header'>Required methods<a href='#required-methods' class='anchor'></a></h2><div class='methods'><h3 id='tymethod.unlock_upgradable_fair' class='method'><code id='unlock_upgradable_fair.v'>fn <a href='#tymethod.unlock_upgradable_fair' class='fnname'>unlock_upgradable_fair</a>(&self)</code></h3><div class='docblock'><p>Releases an upgradable lock using a fair unlock protocol.</p>
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<h2 id='provided-methods' class='small-section-header'>Provided methods<a href='#provided-methods' class='anchor'></a></h2><div class='methods'><h3 id='method.bump_upgradable' class='method'><code id='bump_upgradable.v'>fn <a href='#method.bump_upgradable' class='fnname'>bump_upgradable</a>(&self)</code></h3><div class='docblock'><p>Temporarily yields an upgradable lock to a waiting thread if there is one.</p>
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<p>This method is functionally equivalent to calling <code>unlock_upgradable_fair</code> followed
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by <code>lock_upgradable</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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</div></div><span class='loading-content'>Loading content...</span>
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<h2 id='implementors' class='small-section-header'>Implementors<a href='#implementors' class='anchor'></a></h2><div class='item-list' id='implementors-list'></div><span class='loading-content'>Loading content...</span><script type="text/javascript">window.inlined_types=new Set([]);</script><script type="text/javascript" async
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