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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 `parking_lot` crate."><meta name="keywords" content="rust, rustlang, rust-lang, parking_lot"><title>parking_lot - 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 mod"><!--[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='../parking_lot/index.html'><div class='logo-container'><img src='../rust-logo.png' alt='logo'></div></a><p class='location'>Crate parking_lot</p><div class="sidebar-elems"><a id='all-types' href='all.html'><p>See all parking_lot's items</p></a><div class="block items"><ul><li><a href="#structs">Structs</a></li><li><a href="#enums">Enums</a></li><li><a href="#constants">Constants</a></li><li><a href="#types">Type Definitions</a></li></ul></div><p class='location'></p><script>window.sidebarCurrent = {name: 'parking_lot', ty: 'mod', relpath: '../'};</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/parking_lot/lib.rs.html#8-45' title='goto source code'>[src]</a></span><span class='in-band'>Crate <a class="mod" href=''>parking_lot</a></span></h1><div class='docblock'><p>This library provides implementations of <code>Mutex</code>, <code>RwLock</code>, <code>Condvar</code> and
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<code>Once</code> that are smaller, faster and more flexible than those in the Rust
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standard library. It also provides a <code>ReentrantMutex</code> type.</p>
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</div><h2 id='structs' class='section-header'><a href="#structs">Structs</a></h2>
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<table><tr class='module-item'><td><a class="struct" href="struct.Condvar.html" title='parking_lot::Condvar struct'>Condvar</a></td><td class='docblock-short'><p>A Condition Variable</p>
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</td></tr><tr class='module-item'><td><a class="struct" href="struct.Once.html" title='parking_lot::Once struct'>Once</a></td><td class='docblock-short'><p>A synchronization primitive which can be used to run a one-time
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initialization. Useful for one-time initialization for globals, FFI or
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related functionality.</p>
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</td></tr><tr class='module-item'><td><a class="struct" href="struct.RawMutex.html" title='parking_lot::RawMutex struct'>RawMutex</a></td><td class='docblock-short'><p>Raw mutex type backed by the parking lot.</p>
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</td></tr><tr class='module-item'><td><a class="struct" href="struct.RawRwLock.html" title='parking_lot::RawRwLock struct'>RawRwLock</a></td><td class='docblock-short'><p>Raw reader-writer lock type backed by the parking lot.</p>
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</td></tr><tr class='module-item'><td><a class="struct" href="struct.RawThreadId.html" title='parking_lot::RawThreadId struct'>RawThreadId</a></td><td class='docblock-short'><p>Implementation of the <code>GetThreadId</code> trait for <code>lock_api::ReentrantMutex</code>.</p>
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</td></tr><tr class='module-item'><td><a class="struct" href="struct.WaitTimeoutResult.html" title='parking_lot::WaitTimeoutResult struct'>WaitTimeoutResult</a></td><td class='docblock-short'><p>A type indicating whether a timed wait on a condition variable returned
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due to a time out or not.</p>
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</td></tr></table><h2 id='enums' class='section-header'><a href="#enums">Enums</a></h2>
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<table><tr class='module-item'><td><a class="enum" href="enum.OnceState.html" title='parking_lot::OnceState enum'>OnceState</a></td><td class='docblock-short'><p>Current state of a <code>Once</code>.</p>
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</td></tr></table><h2 id='constants' class='section-header'><a href="#constants">Constants</a></h2>
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<table><tr class='module-item'><td><a class="constant" href="constant.ONCE_INIT.html" title='parking_lot::ONCE_INIT constant'>ONCE_INIT</a></td><td class='docblock-short'><p>Initialization value for static <code>Once</code> values.</p>
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</td></tr></table><h2 id='types' class='section-header'><a href="#types">Type Definitions</a></h2>
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<table><tr class='module-item'><td><a class="type" href="type.MappedMutexGuard.html" title='parking_lot::MappedMutexGuard type'>MappedMutexGuard</a></td><td class='docblock-short'><p>An RAII mutex guard returned by <code>MutexGuard::map</code>, which can point to a
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subfield of the protected data.</p>
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</td></tr><tr class='module-item'><td><a class="type" href="type.MappedReentrantMutexGuard.html" title='parking_lot::MappedReentrantMutexGuard type'>MappedReentrantMutexGuard</a></td><td class='docblock-short'><p>An RAII mutex guard returned by <code>ReentrantMutexGuard::map</code>, which can point to a
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subfield of the protected data.</p>
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</td></tr><tr class='module-item'><td><a class="type" href="type.MappedRwLockReadGuard.html" title='parking_lot::MappedRwLockReadGuard type'>MappedRwLockReadGuard</a></td><td class='docblock-short'><p>An RAII read lock guard returned by <code>RwLockReadGuard::map</code>, which can point to a
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subfield of the protected data.</p>
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</td></tr><tr class='module-item'><td><a class="type" href="type.MappedRwLockWriteGuard.html" title='parking_lot::MappedRwLockWriteGuard type'>MappedRwLockWriteGuard</a></td><td class='docblock-short'><p>An RAII write lock guard returned by <code>RwLockWriteGuard::map</code>, which can point to a
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subfield of the protected data.</p>
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</td></tr><tr class='module-item'><td><a class="type" href="type.Mutex.html" title='parking_lot::Mutex type'>Mutex</a></td><td class='docblock-short'><p>A mutual exclusion primitive useful for protecting shared data</p>
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</td></tr><tr class='module-item'><td><a class="type" href="type.MutexGuard.html" title='parking_lot::MutexGuard type'>MutexGuard</a></td><td class='docblock-short'><p>An RAII implementation of a "scoped lock" of a mutex. When this structure is
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dropped (falls out of scope), the lock will be unlocked.</p>
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</td></tr><tr class='module-item'><td><a class="type" href="type.ReentrantMutex.html" title='parking_lot::ReentrantMutex type'>ReentrantMutex</a></td><td class='docblock-short'><p>A mutex which can be recursively locked by a single thread.</p>
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</td></tr><tr class='module-item'><td><a class="type" href="type.ReentrantMutexGuard.html" title='parking_lot::ReentrantMutexGuard type'>ReentrantMutexGuard</a></td><td class='docblock-short'><p>An RAII implementation of a "scoped lock" of a reentrant mutex. When this structure
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is dropped (falls out of scope), the lock will be unlocked.</p>
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</td></tr><tr class='module-item'><td><a class="type" href="type.RwLock.html" title='parking_lot::RwLock type'>RwLock</a></td><td class='docblock-short'><p>A reader-writer lock</p>
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</td></tr><tr class='module-item'><td><a class="type" href="type.RwLockReadGuard.html" title='parking_lot::RwLockReadGuard type'>RwLockReadGuard</a></td><td class='docblock-short'><p>RAII structure used to release the shared read access of a lock when
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dropped.</p>
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</td></tr><tr class='module-item'><td><a class="type" href="type.RwLockUpgradableReadGuard.html" title='parking_lot::RwLockUpgradableReadGuard type'>RwLockUpgradableReadGuard</a></td><td class='docblock-short'><p>RAII structure used to release the upgradable read access of a lock when
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dropped.</p>
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</td></tr><tr class='module-item'><td><a class="type" href="type.RwLockWriteGuard.html" title='parking_lot::RwLockWriteGuard type'>RwLockWriteGuard</a></td><td class='docblock-short'><p>RAII structure used to release the exclusive write access of a lock when
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dropped.</p>
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