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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="An RAII mutex guard returned by `MutexGuard::map`, which can point to a subfield of the protected data."><title>MappedMutexGuard in lock_api - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-46f98efaafac5295.ttf.woff2,FiraSans-Regular-018c141bf0843ffd.woff2,FiraSans-Medium-8f9a781e4970d388.woff2,SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2,SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../static.files/rustdoc-b0742ba02757f159.css"><meta name="rustdoc-vars" 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class="sidebar-menu-toggle" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../lock_api/index.html">lock_<wbr>api</a><span class="version">0.4.12</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Mapped<wbr>Mutex<wbr>Guard</a></h2><h3><a href="#implementations">Methods</a></h3><ul class="block method"><li><a href="#method.map" title="map">map</a></li><li><a href="#method.try_map" title="try_map">try_map</a></li><li><a href="#method.unlock_fair" title="unlock_fair">unlock_fair</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block trait-implementation"><li><a href="#impl-Debug-for-MappedMutexGuard%3C'a,+R,+T%3E" title="Debug">Debug</a></li><li><a href="#impl-Deref-for-MappedMutexGuard%3C'a,+R,+T%3E" title="Deref">Deref</a></li><li><a href="#impl-DerefMut-for-MappedMutexGuard%3C'a,+R,+T%3E" title="DerefMut">DerefMut</a></li><li><a href="#impl-Display-for-MappedMutexGuard%3C'a,+R,+T%3E" title="Display">Display</a></li><li><a href="#impl-Drop-for-MappedMutexGuard%3C'a,+R,+T%3E" title="Drop">Drop</a></li><li><a href="#impl-Send-for-MappedMutexGuard%3C'a,+R,+T%3E" title="Send">Send</a></li><li><a href="#impl-Sync-for-MappedMutexGuard%3C'a,+R,+T%3E" title="Sync">Sync</a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block synthetic-implementation"><li><a href="#impl-UnwindSafe-for-MappedMutexGuard%3C'a,+R,+T%3E" title="!UnwindSafe">!UnwindSafe</a></li><li><a href="#impl-Freeze-for-MappedMutexGuard%3C'a,+R,+T%3E" title="Freeze">Freeze</a></li><li><a href="#impl-RefUnwindSafe-for-MappedMutexGuard%3C'a,+R,+T%3E" title="RefUnwindSafe">RefUnwindSafe</a></li><li><a href="#impl-Unpin-for-MappedMutexGuard%3C'a,+R,+T%3E" title="Unpin">Unpin</a></li></ul><h3><a href="#blanket-implementations">Blanket Implementations</a></h3><ul class="block blanket-implementation"><li><a href="#impl-Any-for-T" title="Any">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-T" title="Borrow<T>">Borrow<T></a></li><li><a href="#impl-BorrowMut%3CT%3E-for-T" title="BorrowMut<T>">BorrowMut<T></a></li><li><a href="#impl-From%3CT%3E-for-T" title="From<T>">From<T></a></li><li><a href="#impl-Into%3CU%3E-for-T" title="Into<U>">Into<U></a></li><li><a href="#impl-TryFrom%3CU%3E-for-T" title="TryFrom<U>">TryFrom<U></a></li><li><a href="#impl-TryInto%3CU%3E-for-T" title="TryInto<U>">TryInto<U></a></li></ul></section><div id="rustdoc-modnav"><h2 class="in-crate"><a href="index.html">In crate lock_<wbr>api</a></h2></div></div></nav><div class="sidebar-resizer"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><span class="rustdoc-breadcrumbs"><a href="index.html">lock_api</a></span><h1>Struct <span class="struct">MappedMutexGuard</span><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../src/lock_api/mutex.rs.html#834-838">source</a> </span></div><pre class="rust item-decl"><code>pub struct MappedMutexGuard<'a, R: <a class="trait" href="trait.RawMutex.html" title="trait lock_api::RawMutex">RawMutex</a>, T: ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> { <span class="comment">/* private fields */</span> }</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><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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<p>The main difference between <code>MappedMutexGuard</code> and <code>MutexGuard</code> is that the
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former doesn’t support temporarily unlocking and re-locking, since that
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could introduce soundness issues if the locked object is modified by another
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thread.</p>
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</div></details><h2 id="implementations" class="section-header">Implementations<a href="#implementations" class="anchor">§</a></h2><div id="implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-MappedMutexGuard%3C'a,+R,+T%3E" class="impl"><a class="src rightside" href="../src/lock_api/mutex.rs.html#849-899">source</a><a href="#impl-MappedMutexGuard%3C'a,+R,+T%3E" class="anchor">§</a><h3 class="code-header">impl<'a, R: <a class="trait" href="trait.RawMutex.html" title="trait lock_api::RawMutex">RawMutex</a> + 'a, T: ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a> <a class="struct" href="struct.MappedMutexGuard.html" title="struct lock_api::MappedMutexGuard">MappedMutexGuard</a><'a, R, T></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.map" class="method"><a class="src rightside" href="../src/lock_api/mutex.rs.html#859-871">source</a><h4 class="code-header">pub fn <a href="#method.map" class="fn">map</a><U: ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, F>(s: Self, f: F) -> <a class="struct" href="struct.MappedMutexGuard.html" title="struct lock_api::MappedMutexGuard">MappedMutexGuard</a><'a, R, U><div class="where">where
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F: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/1.83.0/core/primitive.reference.html">&mut T</a>) -> <a class="primitive" href="https://doc.rust-lang.org/1.83.0/core/primitive.reference.html">&mut U</a>,</div></h4></section></summary><div class="docblock"><p>Makes a new <code>MappedMutexGuard</code> for a component of the locked data.</p>
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<p>This operation cannot fail as the <code>MappedMutexGuard</code> passed
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in already locked the mutex.</p>
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<p>This is an associated function that needs to be
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used as <code>MappedMutexGuard::map(...)</code>. A method would interfere with methods of
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the same name on the contents of the locked data.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.try_map" class="method"><a class="src rightside" href="../src/lock_api/mutex.rs.html#883-898">source</a><h4 class="code-header">pub fn <a href="#method.try_map" class="fn">try_map</a><U: ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, F>(
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s: Self,
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f: F,
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) -> <a class="enum" href="https://doc.rust-lang.org/1.83.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="struct" href="struct.MappedMutexGuard.html" title="struct lock_api::MappedMutexGuard">MappedMutexGuard</a><'a, R, U>, Self><div class="where">where
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F: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/1.83.0/core/primitive.reference.html">&mut T</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.83.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/1.83.0/core/primitive.reference.html">&mut U</a>>,</div></h4></section></summary><div class="docblock"><p>Attempts to make a new <code>MappedMutexGuard</code> for a component of the
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locked data. The original guard is returned if the closure returns <code>None</code>.</p>
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<p>This operation cannot fail as the <code>MappedMutexGuard</code> passed
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in already locked the mutex.</p>
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<p>This is an associated function that needs to be
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used as <code>MappedMutexGuard::try_map(...)</code>. A method would interfere with methods of
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the same name on the contents of the locked data.</p>
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</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-MappedMutexGuard%3C'a,+R,+T%3E-1" class="impl"><a class="src rightside" href="../src/lock_api/mutex.rs.html#901-922">source</a><a href="#impl-MappedMutexGuard%3C'a,+R,+T%3E-1" class="anchor">§</a><h3 class="code-header">impl<'a, R: <a class="trait" href="trait.RawMutexFair.html" title="trait lock_api::RawMutexFair">RawMutexFair</a> + 'a, T: ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a> <a class="struct" href="struct.MappedMutexGuard.html" title="struct lock_api::MappedMutexGuard">MappedMutexGuard</a><'a, R, T></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.unlock_fair" class="method"><a class="src rightside" href="../src/lock_api/mutex.rs.html#915-921">source</a><h4 class="code-header">pub fn <a href="#method.unlock_fair" class="fn">unlock_fair</a>(s: Self)</h4></section></summary><div class="docblock"><p>Unlocks the mutex using a fair unlock protocol.</p>
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<p>By default, mutexes are unfair and allow the current thread to re-lock
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the mutex before another has the chance to acquire the lock, even if
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that thread has been blocked on the mutex for a long time. This is the
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default because it allows much higher throughput as it avoids forcing a
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context switch on every mutex unlock. This can result in one thread
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acquiring a mutex many more times than other threads.</p>
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<p>However in some cases it can be beneficial to ensure fairness by forcing
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the lock to pass on to a waiting thread if there is one. This is done by
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using this method instead of dropping the <code>MutexGuard</code> normally.</p>
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</div></details></div></details></div><h2 id="trait-implementations" class="section-header">Trait Implementations<a href="#trait-implementations" class="anchor">§</a></h2><div id="trait-implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-Debug-for-MappedMutexGuard%3C'a,+R,+T%3E" class="impl"><a class="src rightside" href="../src/lock_api/mutex.rs.html#949-953">source</a><a href="#impl-Debug-for-MappedMutexGuard%3C'a,+R,+T%3E" class="anchor">§</a><h3 class="code-header">impl<'a, R: <a class="trait" href="trait.RawMutex.html" title="trait lock_api::RawMutex">RawMutex</a> + 'a, T: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> + ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a> <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="struct.MappedMutexGuard.html" title="struct lock_api::MappedMutexGuard">MappedMutexGuard</a><'a, R, T></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.fmt" class="method trait-impl"><a class="src rightside" href="../src/lock_api/mutex.rs.html#950-952">source</a><a href="#method.fmt" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/fmt/trait.Debug.html#tymethod.fmt" class="fn">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/1.83.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/1.83.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/1.83.0/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Deref-for-MappedMutexGuard%3C'a,+R,+T%3E" class="impl"><a class="src rightside" href="../src/lock_api/mutex.rs.html#924-930">source</a><a href="#impl-Deref-for-MappedMutexGuard%3C'a,+R,+T%3E" class="anchor">§</a><h3 class="code-header">impl<'a, R: <a class="trait" href="trait.RawMutex.html" title="trait lock_api::RawMutex">RawMutex</a> + 'a, T: ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a> <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/ops/deref/trait.Deref.html" title="trait core::ops::deref::Deref">Deref</a> for <a class="struct" href="struct.MappedMutexGuard.html" title="struct lock_api::MappedMutexGuard">MappedMutexGuard</a><'a, R, T></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Target" class="associatedtype trait-impl"><a class="src rightside" href="../src/lock_api/mutex.rs.html#925">source</a><a href="#associatedtype.Target" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.83.0/core/ops/deref/trait.Deref.html#associatedtype.Target" class="associatedtype">Target</a> = T</h4></section></summary><div class='docblock'>The resulting type after dereferencing.</div></details><details class="toggle method-toggle" open><summary><section id="method.deref" class="method trait-impl"><a class="src rightside" href="../src/lock_api/mutex.rs.html#927-929">source</a><a href="#method.deref" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/ops/deref/trait.Deref.html#tymethod.deref" class="fn">deref</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.83.0/core/primitive.reference.html">&T</a></h4></section></summary><div class='docblock'>Dereferences the value.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-DerefMut-for-MappedMutexGuard%3C'a,+R,+T%3E" class="impl"><a class="src rightside" href="../src/lock_api/mutex.rs.html#932-937">source</a><a href="#impl-DerefMut-for-MappedMutexGuard%3C'a,+R,+T%3E" class="anchor">§</a><h3 class="code-header">impl<'a, R: <a class="trait" href="trait.RawMutex.html" title="trait lock_api::RawMutex">RawMutex</a> + 'a, T: ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a> <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/ops/deref/trait.DerefMut.html" title="trait core::ops::deref::DerefMut">DerefMut</a> for <a class="struct" href="struct.MappedMutexGuard.html" title="struct lock_api::MappedMutexGuard">MappedMutexGuard</a><'a, R, T></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.deref_mut" class="method trait-impl"><a class="src rightside" href="../src/lock_api/mutex.rs.html#934-936">source</a><a href="#method.deref_mut" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/ops/deref/trait.DerefMut.html#tymethod.deref_mut" class="fn">deref_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/1.83.0/core/primitive.reference.html">&mut T</a></h4></section></summary><div class='docblock'>Mutably dereferences the value.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Display-for-MappedMutexGuard%3C'a,+R,+T%3E" class="impl"><a class="src rightside" href="../src/lock_api/mutex.rs.html#955-961">source</a><a href="#impl-Display-for-MappedMutexGuard%3C'a,+R,+T%3E" class="anchor">§</a><h3 class="code-header">impl<'a, R: <a class="trait" href="trait.RawMutex.html" title="trait lock_api::RawMutex">RawMutex</a> + 'a, T: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a> <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> for <a class="struct" href="struct.MappedMutexGuard.html" title="struct lock_api::MappedMutexGuard">MappedMutexGuard</a><'a, R, T></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.fmt-1" class="method trait-impl"><a class="src rightside" href="../src/lock_api/mutex.rs.html#958-960">source</a><a href="#method.fmt-1" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/fmt/trait.Display.html#tymethod.fmt" class="fn">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/1.83.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/1.83.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/1.83.0/core/fmt/trait.Display.html#tymethod.fmt">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Drop-for-MappedMutexGuard%3C'a,+R,+T%3E" class="impl"><a class="src rightside" href="../src/lock_api/mutex.rs.html#939-947">source</a><a href="#impl-Drop-for-MappedMutexGuard%3C'a,+R,+T%3E" class="anchor">§</a><h3 class="code-header">impl<'a, R: <a class="trait" href="trait.RawMutex.html" title="trait lock_api::RawMutex">RawMutex</a> + 'a, T: ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a> <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/ops/drop/trait.Drop.html" title="trait core::ops::drop::Drop">Drop</a> for <a class="struct" href="struct.MappedMutexGuard.html" title="struct lock_api::MappedMutexGuard">MappedMutexGuard</a><'a, R, T></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.drop" class="method trait-impl"><a class="src rightside" href="../src/lock_api/mutex.rs.html#941-946">source</a><a href="#method.drop" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/ops/drop/trait.Drop.html#tymethod.drop" class="fn">drop</a>(&mut self)</h4></section></summary><div class='docblock'>Executes the destructor for this type. <a href="https://doc.rust-lang.org/1.83.0/core/ops/drop/trait.Drop.html#tymethod.drop">Read more</a></div></details></div></details><section id="impl-Send-for-MappedMutexGuard%3C'a,+R,+T%3E" class="impl"><a class="src rightside" href="../src/lock_api/mutex.rs.html#844-847">source</a><a href="#impl-Send-for-MappedMutexGuard%3C'a,+R,+T%3E" class="anchor">§</a><h3 class="code-header">impl<'a, R: <a class="trait" href="trait.RawMutex.html" title="trait lock_api::RawMutex">RawMutex</a> + 'a, T: ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + 'a> <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="struct.MappedMutexGuard.html" title="struct lock_api::MappedMutexGuard">MappedMutexGuard</a><'a, R, T><div class="where">where
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R::<a class="associatedtype" href="trait.RawMutex.html#associatedtype.GuardMarker" title="type lock_api::RawMutex::GuardMarker">GuardMarker</a>: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>,</div></h3></section><section id="impl-Sync-for-MappedMutexGuard%3C'a,+R,+T%3E" class="impl"><a class="src rightside" href="../src/lock_api/mutex.rs.html#840-843">source</a><a href="#impl-Sync-for-MappedMutexGuard%3C'a,+R,+T%3E" class="anchor">§</a><h3 class="code-header">impl<'a, R: <a class="trait" href="trait.RawMutex.html" title="trait lock_api::RawMutex">RawMutex</a> + <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'a, T: ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'a> <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="struct.MappedMutexGuard.html" title="struct lock_api::MappedMutexGuard">MappedMutexGuard</a><'a, R, T></h3></section></div><h2 id="synthetic-implementations" class="section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor">§</a></h2><div id="synthetic-implementations-list"><section id="impl-Freeze-for-MappedMutexGuard%3C'a,+R,+T%3E" class="impl"><a href="#impl-Freeze-for-MappedMutexGuard%3C'a,+R,+T%3E" class="anchor">§</a><h3 class="code-header">impl<'a, R, T> <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Freeze.html" title="trait core::marker::Freeze">Freeze</a> for <a class="struct" href="struct.MappedMutexGuard.html" title="struct lock_api::MappedMutexGuard">MappedMutexGuard</a><'a, R, T><div class="where">where
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T: ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section><section id="impl-RefUnwindSafe-for-MappedMutexGuard%3C'a,+R,+T%3E" class="impl"><a href="#impl-RefUnwindSafe-for-MappedMutexGuard%3C'a,+R,+T%3E" class="anchor">§</a><h3 class="code-header">impl<'a, R, T> <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="struct.MappedMutexGuard.html" title="struct lock_api::MappedMutexGuard">MappedMutexGuard</a><'a, R, T><div class="where">where
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R: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a>,
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T: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> + ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section><section id="impl-Unpin-for-MappedMutexGuard%3C'a,+R,+T%3E" class="impl"><a href="#impl-Unpin-for-MappedMutexGuard%3C'a,+R,+T%3E" class="anchor">§</a><h3 class="code-header">impl<'a, R, T> <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="struct.MappedMutexGuard.html" title="struct lock_api::MappedMutexGuard">MappedMutexGuard</a><'a, R, T><div class="where">where
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T: ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section><section id="impl-UnwindSafe-for-MappedMutexGuard%3C'a,+R,+T%3E" class="impl"><a href="#impl-UnwindSafe-for-MappedMutexGuard%3C'a,+R,+T%3E" class="anchor">§</a><h3 class="code-header">impl<'a, R, T> !<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="struct" href="struct.MappedMutexGuard.html" title="struct lock_api::MappedMutexGuard">MappedMutexGuard</a><'a, R, T></h3></section></div><h2 id="blanket-implementations" class="section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor">§</a></h2><div id="blanket-implementations-list"><details class="toggle implementors-toggle"><summary><section id="impl-Any-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/any.rs.html#138">source</a><a href="#impl-Any-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T<div class="where">where
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T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.type_id" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/any.rs.html#139">source</a><a href="#method.type_id" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/any/trait.Any.html#tymethod.type_id" class="fn">type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/1.83.0/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></h4></section></summary><div class='docblock'>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/1.83.0/core/any/trait.Any.html#tymethod.type_id">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/borrow.rs.html#209">source</a><a href="#impl-Borrow%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><T> for T<div class="where">where
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T: ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/borrow.rs.html#211">source</a><a href="#method.borrow" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/borrow/trait.Borrow.html#tymethod.borrow" class="fn">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.83.0/core/primitive.reference.html">&T</a></h4></section></summary><div class='docblock'>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.83.0/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/borrow.rs.html#217">source</a><a href="#impl-BorrowMut%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T<div class="where">where
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T: ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow_mut" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/borrow.rs.html#218">source</a><a href="#method.borrow_mut" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fn">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/1.83.0/core/primitive.reference.html">&mut T</a></h4></section></summary><div class='docblock'>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.83.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-From%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#765">source</a><a href="#impl-From%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for T</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#768">source</a><a href="#method.from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(t: T) -> T</h4></section></summary><div class="docblock"><p>Returns the argument unchanged.</p>
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</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#748-750">source</a><a href="#impl-Into%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#758">source</a><a href="#method.into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/convert/trait.Into.html#tymethod.into" class="fn">into</a>(self) -> U</h4></section></summary><div class="docblock"><p>Calls <code>U::from(self)</code>.</p>
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<p>That is, this conversion is whatever the implementation of
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<code><a href="https://doc.rust-lang.org/1.83.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for U</code> chooses to do.</p>
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</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#805-807">source</a><a href="#impl-TryFrom%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error-1" class="associatedtype trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#809">source</a><a href="#associatedtype.Error-1" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/1.83.0/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_from" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#812">source</a><a href="#method.try_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html#tymethod.try_from" class="fn">try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/1.83.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#790-792">source</a><a href="#impl-TryInto%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error" class="associatedtype trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#794">source</a><a href="#associatedtype.Error" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#797">source</a><a href="#method.try_into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryInto.html#tymethod.try_into" class="fn">try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/1.83.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details></div></section></div></main></body></html> |