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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="RAII structure used to release the upgradable read access of a lock when dropped."><meta name="keywords" content="rust, rustlang, rust-lang, RwLockUpgradableReadGuard"><title>RwLockUpgradableReadGuard 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 defer src="sidebar-items.js"></script><script defer src="../main.js"></script><noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../favicon.svg"></head><body class="rustdoc struct"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">☰</button><a class="sidebar-logo" href="../lock_api/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div>
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</a><h2 class="location"><a href="#">RwLockUpgradableReadGuard</a></h2><div class="sidebar-elems"><section><div class="block"><h3 class="sidebar-title"><a href="#implementations">Methods</a></h3><ul><li><a href="#method.bump">bump</a></li><li><a href="#method.downgrade">downgrade</a></li><li><a href="#method.rwlock">rwlock</a></li><li><a href="#method.try_upgrade">try_upgrade</a></li><li><a href="#method.try_upgrade_for">try_upgrade_for</a></li><li><a href="#method.try_upgrade_until">try_upgrade_until</a></li><li><a href="#method.unlock_fair">unlock_fair</a></li><li><a href="#method.unlocked">unlocked</a></li><li><a href="#method.unlocked_fair">unlocked_fair</a></li><li><a href="#method.upgrade">upgrade</a></li></ul></div><div class="block"><h3 class="sidebar-title"><a href="#trait-implementations">Trait Implementations</a></h3><ul><li><a href="#impl-Debug">Debug</a></li><li><a href="#impl-Deref">Deref</a></li><li><a href="#impl-Display">Display</a></li><li><a href="#impl-Drop">Drop</a></li><li><a href="#impl-Sync">Sync</a></li></ul></div><div class="block"><h3 class="sidebar-title"><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul><li><a href="#impl-RefUnwindSafe">!RefUnwindSafe</a></li><li><a href="#impl-Send">Send</a></li><li><a href="#impl-Unpin">Unpin</a></li><li><a href="#impl-UnwindSafe">!UnwindSafe</a></li></ul></div><div class="block"><h3 class="sidebar-title"><a href="#blanket-implementations">Blanket Implementations</a></h3><ul><li><a href="#impl-Any">Any</a></li><li><a href="#impl-Borrow%3CT%3E">Borrow<T></a></li><li><a href="#impl-BorrowMut%3CT%3E">BorrowMut<T></a></li><li><a href="#impl-From%3CT%3E">From<T></a></li><li><a href="#impl-Into%3CU%3E">Into<U></a></li><li><a href="#impl-TryFrom%3CU%3E">TryFrom<U></a></li><li><a href="#impl-TryInto%3CU%3E">TryInto<U></a></li></ul></div></section><h2 class="location"><a href="index.html">In lock_api</a></h2></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.svg" alt="logo"></a><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><button type="button">?</button></div><div id="settings-menu" tabindex="-1">
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<h1 class="fqn"><span class="in-band">Struct <a href="index.html">lock_api</a>::<wbr><a class="struct" href="#">RwLockUpgradableReadGuard</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></h1><span class="out-of-band"><a class="srclink" href="../src/lock_api/rwlock.rs.html#1862-1865">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span></div><div class="docblock item-decl"><pre class="rust struct"><code>pub struct RwLockUpgradableReadGuard<'a, R: <a class="trait" href="trait.RawRwLockUpgrade.html" title="trait lock_api::RawRwLockUpgrade">RawRwLockUpgrade</a>, T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> { /* private fields */ }</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>RAII structure used to release the upgradable read access of a lock when
dropped.</p>
</div></details><h2 id="implementations" class="small-section-header">Implementations<a href="#implementations" class="anchor"></a></h2><div id="implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl" class="impl has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#1872-1926">source</a></span><a href="#impl" class="anchor"></a><h3 class="code-header in-band">impl<'a, R: <a class="trait" href="trait.RawRwLockUpgrade.html" title="trait lock_api::RawRwLockUpgrade">RawRwLockUpgrade</a> + 'a, T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a> <a class="struct" href="struct.RwLockUpgradableReadGuard.html" title="struct lock_api::RwLockUpgradableReadGuard">RwLockUpgradableReadGuard</a><'a, R, T></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.rwlock" class="method has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#1874-1876">source</a></span><a href="#method.rwlock" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.rwlock" class="fnname">rwlock</a>(s: <a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.reference.html">&</a>Self) -> &'a <a class="struct" href="struct.RwLock.html" title="struct lock_api::RwLock">RwLock</a><R, T></h4></section></summary><div class="docblock"><p>Returns a reference to the original reader-writer lock object.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.unlocked" class="method has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#1883-1893">source</a></span><a href="#method.unlocked" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.unlocked" class="fnname">unlocked</a><F, U>(s: <a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.reference.html">&mut </a>Self, f: F) -> U <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>() -> U, </span></h4></section></summary><div class="docblock"><p>Temporarily unlocks the <code>RwLock</code> to execute the given function.</p>
<p>This is safe because <code>&mut</code> guarantees that there exist no other
references to the data protected by the <code>RwLock</code>.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.upgrade" class="method has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#1897-1908">source</a></span><a href="#method.upgrade" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.upgrade" class="fnname">upgrade</a>(s: Self) -> <a class="struct" href="struct.RwLockWriteGuard.html" title="struct lock_api::RwLockWriteGuard">RwLockWriteGuard</a><'a, R, T></h4></section></summary><div class="docblock"><p>Atomically upgrades an upgradable read lock lock into a exclusive write lock,
blocking the current thread until it can be acquired.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.try_upgrade" class="method has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#1913-1925">source</a></span><a href="#method.try_upgrade" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.try_upgrade" class="fnname">try_upgrade</a>(s: Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="struct" href="struct.RwLockWriteGuard.html" title="struct lock_api::RwLockWriteGuard">RwLockWriteGuard</a><'a, R, T>, Self></h4></section></summary><div class="docblock"><p>Tries to atomically upgrade an upgradable read lock into a exclusive write lock.</p>
<p>If the access could not be granted at this time, then the current guard is returned.</p>
</div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-1" class="impl has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#1928-1981">source</a></span><a href="#impl-1" class="anchor"></a><h3 class="code-header in-band">impl<'a, R: <a class="trait" href="trait.RawRwLockUpgradeFair.html" title="trait lock_api::RawRwLockUpgradeFair">RawRwLockUpgradeFair</a> + 'a, T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a> <a class="struct" href="struct.RwLockUpgradableReadGuard.html" title="struct lock_api::RwLockUpgradableReadGuard">RwLockUpgradableReadGuard</a><'a, R, T></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.unlock_fair" class="method has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#1942-1948">source</a></span><a href="#method.unlock_fair" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.unlock_fair" class="fnname">unlock_fair</a>(s: Self)</h4></section></summary><div class="docblock"><p>Unlocks the <code>RwLock</code> using a fair unlock protocol.</p>
<p>By default, <code>RwLock</code> is unfair and allow the current thread to re-lock
the <code>RwLock</code> before another has the chance to acquire the lock, even if
that thread has been blocked on the <code>RwLock</code> for a long time. This is
the default because it allows much higher throughput as it avoids
forcing a context switch on every <code>RwLock</code> unlock. This can result in one
thread acquiring a <code>RwLock</code> many more times than other threads.</p>
<p>However in some cases it can be beneficial to ensure fairness by forcing
the lock to pass on to a waiting thread if there is one. This is done by
using this method instead of dropping the <code>RwLockUpgradableReadGuard</code> normally.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.unlocked_fair" class="method has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#1957-1967">source</a></span><a href="#method.unlocked_fair" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.unlocked_fair" class="fnname">unlocked_fair</a><F, U>(s: <a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.reference.html">&mut </a>Self, f: F) -> U <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>() -> U, </span></h4></section></summary><div class="docblock"><p>Temporarily unlocks the <code>RwLock</code> to execute the given function.</p>
<p>The <code>RwLock</code> is unlocked a fair unlock protocol.</p>
<p>This is safe because <code>&mut</code> guarantees that there exist no other
references to the data protected by the <code>RwLock</code>.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.bump" class="method has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#1975-1980">source</a></span><a href="#method.bump" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.bump" class="fnname">bump</a>(s: <a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.reference.html">&mut </a>Self)</h4></section></summary><div class="docblock"><p>Temporarily yields the <code>RwLock</code> to a waiting thread if there is one.</p>
<p>This method is functionally equivalent to calling <code>unlock_fair</code> followed
by <code>upgradable_read</code>, however it can be much more efficient in the case where there
are no waiting threads.</p>
</div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-2" class="impl has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#1983-2003">source</a></span><a href="#impl-2" class="anchor"></a><h3 class="code-header in-band">impl<'a, R: <a class="trait" href="trait.RawRwLockUpgradeDowngrade.html" title="trait lock_api::RawRwLockUpgradeDowngrade">RawRwLockUpgradeDowngrade</a> + 'a, T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a> <a class="struct" href="struct.RwLockUpgradableReadGuard.html" title="struct lock_api::RwLockUpgradableReadGuard">RwLockUpgradableReadGuard</a><'a, R, T></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.downgrade" class="method has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#1991-2002">source</a></span><a href="#method.downgrade" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.downgrade" class="fnname">downgrade</a>(s: Self) -> <a class="struct" href="struct.RwLockReadGuard.html" title="struct lock_api::RwLockReadGuard">RwLockReadGuard</a><'a, R, T></h4></section></summary><div class="docblock"><p>Atomically downgrades an upgradable read lock lock into a shared read lock
without allowing any writers to take exclusive access of the lock in the
meantime.</p>
<p>Note that if there are any writers currently waiting to take the lock
then other readers may not be able to acquire the lock even if it was
downgraded.</p>
</div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-3" class="impl has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#2005-2050">source</a></span><a href="#impl-3" class="anchor"></a><h3 class="code-header in-band">impl<'a, R: <a class="trait" href="trait.RawRwLockUpgradeTimed.html" title="trait lock_api::RawRwLockUpgradeTimed">RawRwLockUpgradeTimed</a> + 'a, T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a> <a class="struct" href="struct.RwLockUpgradableReadGuard.html" title="struct lock_api::RwLockUpgradableReadGuard">RwLockUpgradableReadGuard</a><'a, R, T></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.try_upgrade_for" class="method has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#2011-2026">source</a></span><a href="#method.try_upgrade_for" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.try_upgrade_for" class="fnname">try_upgrade_for</a>(<br> s: Self, <br> timeout: R::<a class="associatedtype" href="trait.RawRwLockTimed.html#associatedtype.Duration" title="type lock_api::RawRwLockTimed::Duration">Duration</a><br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="struct" href="struct.RwLockWriteGuard.html" title="struct lock_api::RwLockWriteGuard">RwLockWriteGuard</a><'a, R, T>, Self></h4></section></summary><div class="docblock"><p>Tries to atomically upgrade an upgradable read lock into a exclusive
write lock, until a timeout is reached.</p>
<p>If the access could not be granted before the timeout expires, then
the current guard is returned.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.try_upgrade_until" class="method has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#2034-2049">source</a></span><a href="#method.try_upgrade_until" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.try_upgrade_until" class="fnname">try_upgrade_until</a>(<br> s: Self, <br> timeout: R::<a class="associatedtype" href="trait.RawRwLockTimed.html#associatedtype.Instant" title="type lock_api::RawRwLockTimed::Instant">Instant</a><br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="struct" href="struct.RwLockWriteGuard.html" title="struct lock_api::RwLockWriteGuard">RwLockWriteGuard</a><'a, R, T>, Self></h4></section></summary><div class="docblock"><p>Tries to atomically upgrade an upgradable read lock into a exclusive
write lock, until a timeout is reached.</p>
<p>If the access could not be granted before the timeout expires, then
the current guard is returned.</p>
</div></details></div></details></div><h2 id="trait-implementations" class="small-section-header">Trait Implementations<a href="#trait-implementations" class="anchor"></a></h2><div id="trait-implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Debug" class="impl has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#2070-2076">source</a></span><a href="#impl-Debug" class="anchor"></a><h3 class="code-header in-band">impl<'a, R: <a class="trait" href="trait.RawRwLockUpgrade.html" title="trait lock_api::RawRwLockUpgrade">RawRwLockUpgrade</a> + 'a, T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a> <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="struct.RwLockUpgradableReadGuard.html" title="struct lock_api::RwLockUpgradableReadGuard">RwLockUpgradableReadGuard</a><'a, R, T></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt" class="method trait-impl has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#2073-2075">source</a></span><a href="#method.fmt" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt" class="fnname">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
</div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Deref" class="impl has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#2052-2058">source</a></span><a href="#impl-Deref" class="anchor"></a><h3 class="code-header in-band">impl<'a, R: <a class="trait" href="trait.RawRwLockUpgrade.html" title="trait lock_api::RawRwLockUpgrade">RawRwLockUpgrade</a> + 'a, T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.Deref.html" title="trait core::ops::deref::Deref">Deref</a> for <a class="struct" href="struct.RwLockUpgradableReadGuard.html" title="struct lock_api::RwLockUpgradableReadGuard">RwLockUpgradableReadGuard</a><'a, R, T></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Target" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Target" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.Deref.html#associatedtype.Target" class="associatedtype">Target</a> = T</h4></section></summary><div class='docblock'><p>The resulting type after dereferencing.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.deref" class="method trait-impl has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#2055-2057">source</a></span><a href="#method.deref" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.Deref.html#tymethod.deref" class="fnname">deref</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.reference.html">&</a>T</h4></section></summary><div class='docblock'><p>Dereferences the value.</p>
</div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Display" class="impl has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#2078-2084">source</a></span><a href="#impl-Display" class="anchor"></a><h3 class="code-header in-band">impl<'a, R: <a class="trait" href="trait.RawRwLockUpgrade.html" title="trait lock_api::RawRwLockUpgrade">RawRwLockUpgrade</a> + 'a, T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a> <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> for <a class="struct" href="struct.RwLockUpgradableReadGuard.html" title="struct lock_api::RwLockUpgradableReadGuard">RwLockUpgradableReadGuard</a><'a, R, T></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt-1" class="method trait-impl has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#2081-2083">source</a></span><a href="#method.fmt-1" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html#tymethod.fmt" class="fnname">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html#tymethod.fmt">Read more</a></p>
</div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Drop" class="impl has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#2060-2068">source</a></span><a href="#impl-Drop" class="anchor"></a><h3 class="code-header in-band">impl<'a, R: <a class="trait" href="trait.RawRwLockUpgrade.html" title="trait lock_api::RawRwLockUpgrade">RawRwLockUpgrade</a> + 'a, T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html" title="trait core::ops::drop::Drop">Drop</a> for <a class="struct" href="struct.RwLockUpgradableReadGuard.html" title="struct lock_api::RwLockUpgradableReadGuard">RwLockUpgradableReadGuard</a><'a, R, T></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.drop" class="method trait-impl has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#2062-2067">source</a></span><a href="#method.drop" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html#tymethod.drop" class="fnname">drop</a>(&mut self)</h4></section></summary><div class='docblock'><p>Executes the destructor for this type. <a href="https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html#tymethod.drop">Read more</a></p>
</div></details></div></details><section id="impl-Sync" class="impl has-srclink"><span class="rightside"><a class="srclink" href="../src/lock_api/rwlock.rs.html#1867-1870">source</a></span><a href="#impl-Sync" class="anchor"></a><h3 class="code-header in-band">impl<'a, R: <a class="trait" href="trait.RawRwLockUpgrade.html" title="trait lock_api::RawRwLockUpgrade">RawRwLockUpgrade</a> + 'a, T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'a> <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="struct.RwLockUpgradableReadGuard.html" title="struct lock_api::RwLockUpgradableReadGuard">RwLockUpgradableReadGuard</a><'a, R, T></h3></section></div><h2 id="synthetic-implementations" class="small-section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor"></a></h2><div id="synthetic-implementations-list"><section id="impl-RefUnwindSafe" class="impl has-srclink"><a href="#impl-RefUnwindSafe" class="anchor"></a><h3 class="code-header in-band">impl<'a, R, T> !<a class="trait" href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="struct.RwLockUpgradableReadGuard.html" title="struct lock_api::RwLockUpgradableReadGuard">RwLockUpgradableReadGuard</a><'a, R, T></h3></section><section id="impl-Send" class="impl has-srclink"><a href="#impl-Send" class="anchor"></a><h3 class="code-header in-band">impl<'a, R, T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="struct.RwLockUpgradableReadGuard.html" title="struct lock_api::RwLockUpgradableReadGuard">RwLockUpgradableReadGuard</a><'a, R, T> <span class="where fmt-newline">where<br> R: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>,<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>,<br> <R as <a class="trait" href="trait.RawRwLock.html" title="trait lock_api::RawRwLock">RawRwLock</a>>::<a class="associatedtype" href="trait.RawRwLock.html#associatedtype.GuardMarker" title="type lock_api::RawRwLock::GuardMarker">GuardMarker</a>: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>, </span></h3></section><section id="impl-Unpin" class="impl has-srclink"><a href="#impl-Unpin" class="anchor"></a><h3 class="code-header in-band">impl<'a, R, T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="struct.RwLockUpgradableReadGuard.html" title="struct lock_api::RwLockUpgradableReadGuard">RwLockUpgradableReadGuard</a><'a, R, T> <span class="where fmt-newline">where<br> <R as <a class="trait" href="trait.RawRwLock.html" title="trait lock_api::RawRwLock">RawRwLock</a>>::<a class="associatedtype" href="trait.RawRwLock.html#associatedtype.GuardMarker" title="type lock_api::RawRwLock::GuardMarker">GuardMarker</a>: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a>, </span></h3></section><section id="impl-UnwindSafe" class="impl has-srclink"><a href="#impl-UnwindSafe" class="anchor"></a><h3 class="code-header in-band">impl<'a, R, T> !<a class="trait" href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="struct" href="struct.RwLockUpgradableReadGuard.html" title="struct lock_api::RwLockUpgradableReadGuard">RwLockUpgradableReadGuard</a><'a, R, T></h3></section></div><h2 id="blanket-implementations" class="small-section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor"></a></h2><div id="blanket-implementations-list"><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Any" class="impl has-srclink"><span class="rightside"><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#203">source</a></span><a href="#impl-Any" class="anchor"></a><h3 class="code-header in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T <span class="where fmt-newline">where<br> T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.type_id" class="method trait-impl has-srclink"><span class="rightside"><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#204">source</a></span><a href="#method.type_id" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id" class="fnname">type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></h4></section></summary><div class='docblock'><p>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id">Read more</a></p>
</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E" class="impl has-srclink"><span class="rightside"><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#209">source</a></span><a href="#impl-Borrow%3CT%3E" class="anchor"></a><h3 class="code-header in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><T> for T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.borrow" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/91522" title="Tracking issue for const_borrow">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#211">source</a></span><a href="#method.borrow" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow" class="fnname">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.reference.html">&</a>T</h4></section></summary><div class='docblock'><p>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></p>
</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E" class="impl has-srclink"><span class="rightside"><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#218">source</a></span><a href="#impl-BorrowMut%3CT%3E" class="anchor"></a><h3 class="code-header in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.borrow_mut" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/91522" title="Tracking issue for const_borrow">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#219">source</a></span><a href="#method.borrow_mut" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fnname">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.reference.html">&mut </a>T</h4></section></summary><div class='docblock'><p>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></p>
</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-From%3CT%3E" class="impl has-srclink"><span class="rightside"><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#557">source</a></span><a href="#impl-From%3CT%3E" class="anchor"></a><h3 class="code-header in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#559">source</a></span><a href="#method.from" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from" class="fnname">from</a>(t: T) -> T</h4></section></summary><div class="docblock"><p>Returns the argument unchanged.</p>
</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E" class="impl has-srclink"><span class="rightside"><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#541">source</a></span><a href="#impl-Into%3CU%3E" class="anchor"></a><h3 class="code-header in-band">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T>, </span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.into" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#549">source</a></span><a href="#method.into" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html#tymethod.into" class="fnname">into</a>(self) -> U</h4></section></summary><div class="docblock"><p>Calls <code>U::from(self)</code>.</p>
<p>That is, this conversion is whatever the implementation of
<code><a href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="From">From</a><T> for U</code> chooses to do.</p>
</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E" class="impl has-srclink"><span class="rightside"><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#598">source</a></span><a href="#impl-TryFrom%3CU%3E" class="anchor"></a><h3 class="code-header in-band">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>, </span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Error-1" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Error-1" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/nightly/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></h4></section></summary><div class='docblock'><p>The type returned in the event of a conversion error.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.try_from" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#604">source</a></span><a href="#method.try_from" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#tymethod.try_from" class="fnname">try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'><p>Performs the conversion.</p>
</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E" class="impl has-srclink"><span class="rightside"><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#583">source</a></span><a href="#impl-TryInto%3CU%3E" class="anchor"></a><h3 class="code-header in-band">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>, </span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Error" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Error" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></h4></section></summary><div class='docblock'><p>The type returned in the event of a conversion error.</p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.try_into" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#589">source</a></span><a href="#method.try_into" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#tymethod.try_into" class="fnname">try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'><p>Performs the conversion.</p>
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