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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="A lock that provides data access to either one writer or many readers."><title>RwLock in spin::rwlock - 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-492a78a4a87dcc01.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="spin" data-themes="" data-resource-suffix="" data-rustdoc-version="1.82.0 (f6e511eec 2024-10-15)" data-channel="1.82.0" data-search-js="search-a99f1315e7cc5121.js" data-settings-js="settings-4313503d2e1961c2.js" ><script src="../../static.files/storage-118b08c4c78b968e.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../static.files/main-921df33f47b8780c.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-3b12f09e550e0385.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-2c020d218678b618.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" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../spin/index.html">spin</a><span class="version">0.9.8</span></h2></div><h2 class="location"><a href="#">RwLock</a></h2><div class="sidebar-elems"><section><h3><a href="#implementations">Methods</a></h3><ul class="block method"><li><a href="#method.as_mut_ptr">as_mut_ptr</a></li><li><a href="#method.force_read_decrement">force_read_decrement</a></li><li><a href="#method.force_write_unlock">force_write_unlock</a></li><li><a href="#method.get_mut">get_mut</a></li><li><a href="#method.into_inner">into_inner</a></li><li><a href="#method.new">new</a></li><li><a href="#method.read">read</a></li><li><a href="#method.reader_count">reader_count</a></li><li><a href="#method.try_read">try_read</a></li><li><a href="#method.try_upgradeable_read">try_upgradeable_read</a></li><li><a href="#method.try_write">try_write</a></li><li><a href="#method.upgradeable_read">upgradeable_read</a></li><li><a href="#method.write">write</a></li><li><a href="#method.writer_count">writer_count</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block trait-implementation"><li><a href="#impl-Debug-for-RwLock%3CT,+R%3E">Debug</a></li><li><a href="#impl-Default-for-RwLock%3CT,+R%3E">Default</a></li><li><a href="#impl-From%3CT%3E-for-RwLock%3CT,+R%3E">From<T></a></li><li><a href="#impl-RawRwLock-for-RwLock%3C(),+R%3E">RawRwLock</a></li><li><a href="#impl-RawRwLockDowngrade-for-RwLock%3C(),+R%3E">RawRwLockDowngrade</a></li><li><a href="#impl-RawRwLockUpgrade-for-RwLock%3C(),+R%3E">RawRwLockUpgrade</a></li><li><a href="#impl-Send-for-RwLock%3CT,+R%3E">Send</a></li><li><a href="#impl-Sync-for-RwLock%3CT,+R%3E">Sync</a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block synthetic-implementation"><li><a href="#impl-Freeze-for-RwLock%3CT,+R%3E">!Freeze</a></li><li><a href="#impl-RefUnwindSafe-for-RwLock%3CT,+R%3E">!RefUnwindSafe</a></li><li><a href="#impl-Unpin-for-RwLock%3CT,+R%3E">Unpin</a></li><li><a href="#impl-UnwindSafe-for-Rw
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<p>This lock behaves in a similar manner to its namesake <code>std::sync::RwLock</code> but uses
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spinning for synchronisation instead. Unlike its namespace, this lock does not
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track lock poisoning.</p>
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<p>This type of lock allows a number of readers or at most one writer at any
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point in time. The write portion of this lock typically allows modification
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of the underlying data (exclusive access) and the read portion of this lock
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typically allows for read-only access (shared access).</p>
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<p>The type parameter <code>T</code> represents the data that this lock protects. It is
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required that <code>T</code> satisfies <code>Send</code> to be shared across tasks and <code>Sync</code> to
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allow concurrent access through readers. The RAII guards returned from the
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locking methods implement <code>Deref</code> (and <code>DerefMut</code> for the <code>write</code> methods)
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to allow access to the contained of the lock.</p>
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<p>An <a href="struct.RwLockUpgradableGuard.html" title="struct spin::rwlock::RwLockUpgradableGuard"><code>RwLockUpgradableGuard</code></a> can be upgraded to a
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writable guard through the <a href="struct.RwLockUpgradableGuard.html#method.upgrade" title="method spin::rwlock::RwLockUpgradableGuard::upgrade"><code>RwLockUpgradableGuard::upgrade</code></a>
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<a href="struct.RwLockUpgradableGuard.html#method.try_upgrade" title="method spin::rwlock::RwLockUpgradableGuard::try_upgrade"><code>RwLockUpgradableGuard::try_upgrade</code></a> functions.
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Writable or upgradeable guards can be downgraded through their respective <code>downgrade</code>
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functions.</p>
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<p>Based on Facebook’s
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<a href="https://github.com/facebook/folly/blob/a0394d84f2d5c3e50ebfd0566f9d3acb52cfab5a/folly/synchronization/RWSpinLock.h"><code>folly/RWSpinLock.h</code></a>.
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This implementation is unfair to writers - if the lock always has readers, then no writers will
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ever get a chance. Using an upgradeable lock guard can <em>somewhat</em> alleviate this issue as no
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new readers are allowed when an upgradeable guard is held, but upgradeable guards can be taken
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when there are existing readers. However if the lock is that highly contended and writes are
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crucial then this implementation may be a poor choice.</p>
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<h2 id="examples"><a class="doc-anchor" href="#examples">§</a>Examples</h2>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>spin;
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<span class="kw">let </span>lock = spin::RwLock::new(<span class="number">5</span>);
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<span class="comment">// many reader locks can be held at once
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</span>{
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<span class="kw">let </span>r1 = lock.read();
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<span class="kw">let </span>r2 = lock.read();
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<span class="macro">assert_eq!</span>(<span class="kw-2">*</span>r1, <span class="number">5</span>);
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<span class="macro">assert_eq!</span>(<span class="kw-2">*</span>r2, <span class="number">5</span>);
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} <span class="comment">// read locks are dropped at this point
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// only one write lock may be held, however
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</span>{
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<span class="kw">let </span><span class="kw-2">mut </span>w = lock.write();
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<span class="kw-2">*</span>w += <span class="number">1</span>;
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<span class="macro">assert_eq!</span>(<span class="kw-2">*</span>w, <span class="number">6</span>);
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} <span class="comment">// write lock is dropped here</span></code></pre></div>
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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-RwLock%3CT,+R%3E" class="impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#123-184">source</a><a href="#impl-RwLock%3CT,+R%3E" class="anchor">§</a><h3 class="code-header">impl<T, R> <a class="struct" href="struct.RwLock.html" title="struct spin::rwlock::RwLock">RwLock</a><T, R></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.new" class="method"><a class="src rightside" href="../../src/spin/rwlock.rs.html#140-146">source</a><h4 class="code-header">pub const fn <a href="#method.new" class="fn">new</a>(data: T) -> Self</h4></section></summary><div class="docblock"><p>Creates a new spinlock wrapping the supplied data.</p>
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<p>May be used statically:</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>spin;
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<span class="kw">static </span>RW_LOCK: spin::RwLock<()> = spin::RwLock::new(());
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<span class="kw">fn </span>demo() {
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<span class="kw">let </span>lock = RW_LOCK.read();
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<span class="comment">// do something with lock
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</span>drop(lock);
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}</code></pre></div>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.into_inner" class="method"><a class="src rightside" href="../../src/spin/rwlock.rs.html#150-155">source</a><h4 class="code-header">pub fn <a href="#method.into_inner" class="fn">into_inner</a>(self) -> T</h4></section></summary><div class="docblock"><p>Consumes this <code>RwLock</code>, returning the underlying data.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.as_mut_ptr" class="method"><a class="src rightside" href="../../src/spin/rwlock.rs.html#181-183">source</a><h4 class="code-header">pub fn <a href="#method.as_mut_ptr" class="fn">as_mut_ptr</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.82.0/core/primitive.pointer.html">*mut T</a></h4></section></summary><div class="docblock"><p>Returns a mutable pointer to the underying data.</p>
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<p>This is mostly meant to be used for applications which require manual unlocking, but where
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storing both the lock and the pointer to the inner data gets inefficient.</p>
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<p>While this is safe, writing to the data is undefined behavior unless the current thread has
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acquired a write lock, and reading requires either a read or write lock.</p>
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<h5 id="example"><a class="doc-anchor" href="#example">§</a>Example</h5>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>lock = spin::RwLock::new(<span class="number">42</span>);
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<span class="kw">unsafe </span>{
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core::mem::forget(lock.write());
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<span class="macro">assert_eq!</span>(lock.as_mut_ptr().read(), <span class="number">42</span>);
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lock.as_mut_ptr().write(<span class="number">58</span>);
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lock.force_write_unlock();
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}
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<span class="macro">assert_eq!</span>(<span class="kw-2">*</span>lock.read(), <span class="number">58</span>);
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</code></pre></div>
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</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-RwLock%3CT,+R%3E-1" class="impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#186-257">source</a><a href="#impl-RwLock%3CT,+R%3E-1" class="anchor">§</a><h3 class="code-header">impl<T: ?<a class="trait" href="https://doc.rust-lang.org/1.82.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, R: <a class="trait" href="../relax/trait.RelaxStrategy.html" title="trait spin::relax::RelaxStrategy">RelaxStrategy</a>> <a class="struct" href="struct.RwLock.html" title="struct spin::rwlock::RwLock">RwLock</a><T, R></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.read" class="method"><a class="src rightside" href="../../src/spin/rwlock.rs.html#209-216">source</a><h4 class="code-header">pub fn <a href="#method.read" class="fn">read</a>(&self) -> <a class="struct" href="struct.RwLockReadGuard.html" title="struct spin::rwlock::RwLockReadGuard">RwLockReadGuard</a><'_, T></h4></section></summary><div class="docblock"><p>Locks this rwlock with shared read access, blocking the current thread
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until it can be acquired.</p>
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<p>The calling thread will be blocked until there are no more writers which
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hold the lock. There may be other readers currently inside the lock when
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this method returns. This method does not provide any guarantees with
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respect to the ordering of whether contentious readers or writers will
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acquire the lock first.</p>
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<p>Returns an RAII guard which will release this thread’s shared access
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once it is dropped.</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>mylock = spin::RwLock::new(<span class="number">0</span>);
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{
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<span class="kw">let </span><span class="kw-2">mut </span>data = mylock.read();
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<span class="comment">// The lock is now locked and the data can be read
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</span><span class="macro">println!</span>(<span class="string">"{}"</span>, <span class="kw-2">*</span>data);
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<span class="comment">// The lock is dropped
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</span>}</code></pre></div>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.write" class="method"><a class="src rightside" href="../../src/spin/rwlock.rs.html#237-244">source</a><h4 class="code-header">pub fn <a href="#method.write" class="fn">write</a>(&self) -> <a class="struct" href="struct.RwLockWriteGuard.html" title="struct spin::rwlock::RwLockWriteGuard">RwLockWriteGuard</a><'_, T, R></h4></section></summary><div class="docblock"><p>Lock this rwlock with exclusive write access, blocking the current
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thread until it can be acquired.</p>
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<p>This function will not return while other writers or other readers
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currently have access to the lock.</p>
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<p>Returns an RAII guard which will drop the write access of this rwlock
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when dropped.</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>mylock = spin::RwLock::new(<span class="number">0</span>);
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{
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<span class="kw">let </span><span class="kw-2">mut </span>data = mylock.write();
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<span class="comment">// The lock is now locked and the data can be written
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</span><span class="kw-2">*</span>data += <span class="number">1</span>;
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<span class="comment">// The lock is dropped
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</span>}</code></pre></div>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.upgradeable_read" class="method"><a class="src rightside" href="../../src/spin/rwlock.rs.html#249-256">source</a><h4 class="code-header">pub fn <a href="#method.upgradeable_read" class="fn">upgradeable_read</a>(&self) -> <a class="struct" href="struct.RwLockUpgradableGuard.html" title="struct spin::rwlock::RwLockUpgradableGuard">RwLockUpgradableGuard</a><'_, T, R></h4></section></summary><div class="docblock"><p>Obtain a readable lock guard that can later be upgraded to a writable lock guard.
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Upgrades can be done through the <a href="struct.RwLockUpgradableGuard.html#method.upgrade" title="method spin::rwlock::RwLockUpgradableGuard::upgrade"><code>RwLockUpgradableGuard::upgrade</code></a> method.</p>
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</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-RwLock%3CT,+R%3E-2" class="impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#259-445">source</a><a href="#impl-RwLock%3CT,+R%3E-2" class="anchor">§</a><h3 class="code-header">impl<T: ?<a class="trait" href="https://doc.rust-lang.org/1.82.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, R> <a class="struct" href="struct.RwLock.html" title="struct spin::rwlock::RwLock">RwLock</a><T, R></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.try_read" class="method"><a class="src rightside" href="../../src/spin/rwlock.rs.html#298-313">source</a><h4 class="code-header">pub fn <a href="#method.try_read" class="fn">try_read</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.82.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.RwLockReadGuard.html" title="struct spin::rwlock::RwLockReadGuard">RwLockReadGuard</a><'_, T>></h4></section></summary><div class="docblock"><p>Attempt to acquire this lock with shared read access.</p>
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<p>This function will never block and will return immediately if <code>read</code>
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would otherwise succeed. Returns <code>Some</code> of an RAII guard which will
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release the shared access of this thread when dropped, or <code>None</code> if the
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access could not be granted. This method does not provide any
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guarantees with respect to the ordering of whether contentious readers
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or writers will acquire the lock first.</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>mylock = spin::RwLock::new(<span class="number">0</span>);
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{
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<span class="kw">match </span>mylock.try_read() {
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<span class="prelude-val">Some</span>(data) => {
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<span class="comment">// The lock is now locked and the data can be read
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</span><span class="macro">println!</span>(<span class="string">"{}"</span>, <span class="kw-2">*</span>data);
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<span class="comment">// The lock is dropped
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</span>},
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<span class="prelude-val">None </span>=> (), <span class="comment">// no cigar
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</span>};
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}</code></pre></div>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.reader_count" class="method"><a class="src rightside" href="../../src/spin/rwlock.rs.html#321-324">source</a><h4 class="code-header">pub fn <a href="#method.reader_count" class="fn">reader_count</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.82.0/core/primitive.usize.html">usize</a></h4></section></summary><div class="docblock"><p>Return the number of readers that currently hold the lock (including upgradable readers).</p>
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<h5 id="safety"><a class="doc-anchor" href="#safety">§</a>Safety</h5>
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<p>This function provides no synchronization guarantees and so its result should be considered ‘out of date’
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the instant it is called. Do not use it for synchronization purposes. However, it may be useful as a heuristic.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.writer_count" class="method"><a class="src rightside" href="../../src/spin/rwlock.rs.html#334-336">source</a><h4 class="code-header">pub fn <a href="#method.writer_count" class="fn">writer_count</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.82.0/core/primitive.usize.html">usize</a></h4></section></summary><div class="docblock"><p>Return the number of writers that currently hold the lock.</p>
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<p>Because <a href="struct.RwLock.html" title="struct spin::rwlock::RwLock"><code>RwLock</code></a> guarantees exclusive mutable access, this function may only return either <code>0</code> or <code>1</code>.</p>
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<h5 id="safety-1"><a class="doc-anchor" href="#safety-1">§</a>Safety</h5>
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<p>This function provides no synchronization guarantees and so its result should be considered ‘out of date’
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the instant it is called. Do not use it for synchronization purposes. However, it may be useful as a heuristic.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.force_read_decrement" class="method"><a class="src rightside" href="../../src/spin/rwlock.rs.html#347-350">source</a><h4 class="code-header">pub unsafe fn <a href="#method.force_read_decrement" class="fn">force_read_decrement</a>(&self)</h4></section></summary><div class="docblock"><p>Force decrement the reader count.</p>
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<h5 id="safety-2"><a class="doc-anchor" href="#safety-2">§</a>Safety</h5>
|
|||
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<p>This is <em>extremely</em> unsafe if there are outstanding <code>RwLockReadGuard</code>s
|
|||
|
|
live, or if called more times than <code>read</code> has been called, but can be
|
|||
|
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useful in FFI contexts where the caller doesn’t know how to deal with
|
|||
|
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RAII. The underlying atomic operation uses <code>Ordering::Release</code>.</p>
|
|||
|
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</div></details><details class="toggle method-toggle" open><summary><section id="method.force_write_unlock" class="method"><a class="src rightside" href="../../src/spin/rwlock.rs.html#361-364">source</a><h4 class="code-header">pub unsafe fn <a href="#method.force_write_unlock" class="fn">force_write_unlock</a>(&self)</h4></section></summary><div class="docblock"><p>Force unlock exclusive write access.</p>
|
|||
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<h5 id="safety-3"><a class="doc-anchor" href="#safety-3">§</a>Safety</h5>
|
|||
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<p>This is <em>extremely</em> unsafe if there are outstanding <code>RwLockWriteGuard</code>s
|
|||
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live, or if called when there are current readers, but can be useful in
|
|||
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FFI contexts where the caller doesn’t know how to deal with RAII. The
|
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|
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underlying atomic operation uses <code>Ordering::Release</code>.</p>
|
|||
|
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</div></details><details class="toggle method-toggle" open><summary><section id="method.try_write" class="method"><a class="src rightside" href="../../src/spin/rwlock.rs.html#408-410">source</a><h4 class="code-header">pub fn <a href="#method.try_write" class="fn">try_write</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.82.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.RwLockWriteGuard.html" title="struct spin::rwlock::RwLockWriteGuard">RwLockWriteGuard</a><'_, T, R>></h4></section></summary><div class="docblock"><p>Attempt to lock this rwlock with exclusive write access.</p>
|
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<p>This function does not ever block, and it will return <code>None</code> if a call
|
|||
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|
to <code>write</code> would otherwise block. If successful, an RAII guard is
|
|||
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returned.</p>
|
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|
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|
|||
|
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>mylock = spin::RwLock::new(<span class="number">0</span>);
|
|||
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|
{
|
|||
|
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<span class="kw">match </span>mylock.try_write() {
|
|||
|
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<span class="prelude-val">Some</span>(<span class="kw-2">mut </span>data) => {
|
|||
|
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<span class="comment">// The lock is now locked and the data can be written
|
|||
|
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</span><span class="kw-2">*</span>data += <span class="number">1</span>;
|
|||
|
|
<span class="comment">// The lock is implicitly dropped
|
|||
|
|
</span>},
|
|||
|
|
<span class="prelude-val">None </span>=> (), <span class="comment">// no cigar
|
|||
|
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</span>};
|
|||
|
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}</code></pre></div>
|
|||
|
|
</div></details><details class="toggle method-toggle" open><summary><section id="method.try_upgradeable_read" class="method"><a class="src rightside" href="../../src/spin/rwlock.rs.html#414-426">source</a><h4 class="code-header">pub fn <a href="#method.try_upgradeable_read" class="fn">try_upgradeable_read</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.82.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.RwLockUpgradableGuard.html" title="struct spin::rwlock::RwLockUpgradableGuard">RwLockUpgradableGuard</a><'_, T, R>></h4></section></summary><div class="docblock"><p>Tries to obtain an upgradeable lock guard.</p>
|
|||
|
|
</div></details><details class="toggle method-toggle" open><summary><section id="method.get_mut" class="method"><a class="src rightside" href="../../src/spin/rwlock.rs.html#440-444">source</a><h4 class="code-header">pub fn <a href="#method.get_mut" class="fn">get_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/1.82.0/core/primitive.reference.html">&mut T</a></h4></section></summary><div class="docblock"><p>Returns a mutable reference to the underlying data.</p>
|
|||
|
|
<p>Since this call borrows the <code>RwLock</code> mutably, no actual locking needs to
|
|||
|
|
take place – the mutable borrow statically guarantees no locks exist.</p>
|
|||
|
|
<h5 id="examples-1"><a class="doc-anchor" href="#examples-1">§</a>Examples</h5>
|
|||
|
|
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>lock = spin::RwLock::new(<span class="number">0</span>);
|
|||
|
|
<span class="kw-2">*</span>lock.get_mut() = <span class="number">10</span>;
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="kw-2">*</span>lock.read(), <span class="number">10</span>);</code></pre></div>
|
|||
|
|
</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-RwLock%3CT,+R%3E" class="impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#447-456">source</a><a href="#impl-Debug-for-RwLock%3CT,+R%3E" class="anchor">§</a><h3 class="code-header">impl<T: ?<a class="trait" href="https://doc.rust-lang.org/1.82.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a>, R> <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="struct.RwLock.html" title="struct spin::rwlock::RwLock">RwLock</a><T, R></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/spin/rwlock.rs.html#448-455">source</a><a href="#method.fmt" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.82.0/core/fmt/trait.Debug.html#tymethod.fmt" class="fn">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/1.82.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/1.82.0/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/1.82.0/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Default-for-RwLock%3CT,+R%3E" class="impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#458-462">source</a><a href="#impl-Default-for-RwLock%3CT,+R%3E" class="anchor">§</a><h3 class="code-header">impl<T: ?<a class="trait" href="https://doc.rust-lang.org/1.82.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/default/trait.Default.html" title="trait core::default::Default">Default</a>, R> <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/default/trait.Default.html" title="trait core::default::Default">Default</a> for <a class="struct" href="struct.RwLock.html" title="struct spin::rwlock::RwLock">RwLock</a><T, R></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.default" class="method trait-impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#459-461">source</a><a href="#method.default" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.82.0/core/default/trait.Default.html#tymethod.default" class="fn">default</a>() -> Self</h4></section></summary><div class='docblock'>Returns the “default value” for a type. <a href="https://doc.rust-lang.org/1.82.0/core/default/trait.Default.html#tymethod.default">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3CT%3E-for-RwLock%3CT,+R%3E" class="impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#464-468">source</a><a href="#impl-From%3CT%3E-for-RwLock%3CT,+R%3E" class="anchor">§</a><h3 class="code-header">impl<T, R> <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for <a class="struct" href="struct.RwLock.html" title="struct spin::rwlock::RwLock">RwLock</a><T, R></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from"
|
|||
|
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one of the <code>GuardSend</code> or <code>GuardNoSend</code> helper types here.</div></details><details class="toggle" open><summary><section id="associatedconstant.INIT" class="associatedconstant trait-impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#806">source</a><a href="#associatedconstant.INIT" class="anchor">§</a><h4 class="code-header">const <a href="../../lock_api/rwlock/trait.RawRwLock.html#associatedconstant.INIT" class="constant">INIT</a>: Self = _</h4></section></summary><div class='docblock'>Initial value for an unlocked <code>RwLock</code>.</div></details><details class="toggle method-toggle" open><summary><section id="method.lock_exclusive" class="method trait-impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#809-812">source</a><a href="#method.lock_exclusive" class="anchor">§</a><h4 class="code-header">fn <a href="../../lock_api/rwlock/trait.RawRwLock.html#tymethod.lock_exclusive" class="fn">lock_exclusive</a>(&self)</h4></section></summary><div class='docblock'>Acquires an exclusive lock, blocking the current thread until it is able to do so.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_lock_exclusive" class="method trait-impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#815-818">source</a><a href="#method.try_lock_exclusive" class="anchor">§</a><h4 class="code-header">fn <a href="../../lock_api/rwlock/trait.RawRwLock.html#tymethod.try_lock_exclusive" class="fn">try_lock_exclusive</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.82.0/core/primitive.bool.html">bool</a></h4></section></summary><div class='docblock'>Attempts to acquire an exclusive lock without blocking.</div></details><details class="toggle method-toggle" open><summary><section id="method.unlock_exclusive" class="method trait-impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#821-827">source</a><a href="#method.unlock_exclusive" class="anchor">§</a><h4 class="code-header">unsafe fn <a href="../../lock_api/rwlock/trait.RawRwLock.html#tymethod.unlock_exclusive" class="fn">unlock_exclusive</a>(&self)</h4></section></summary><div class='docblock'>Releases an exclusive lock. <a href="../../lock_api/rwlock/trait.RawRwLock.html#tymethod.unlock_exclusive">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.lock_shared" class="method trait-impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#830-833">source</a><a href="#method.lock_shared" class="anchor">§</a><h4 class="code-header">fn <a href="../../lock_api/rwlock/trait.RawRwLock.html#tymethod.lock_shared" class="fn">lock_shared</a>(&self)</h4></section></summary><div class='docblock'>Acquires a shared lock, blocking the current thread until it is able to do so.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_lock_shared" class="method trait-impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#836-839">source</a><a href="#method.try_lock_shared" class="anchor">§</a><h4 class="code-header">fn <a href="../../lock_api/rwlock/trait.RawRwLock.html#tymethod.try_lock_shared" class="fn">try_lock_shared</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.82.0/core/primitive.bool.html">bool</a></h4></section></summary><div class='docblock'>Attempts to acquire a shared lock without blocking.</div></details><details class="toggle method-toggle" open><summary><section id="method.unlock_shared" class="method trait-impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#842-847">source</a><a href="#method.unlock_shared" class="anchor">§</a><h4 class="code-header">unsafe fn <a href="../../lock_api/rwlock/trait.RawRwLock.html#tymethod.unlock_shared" class="fn">unlock_shared</a>(&self)</h4></section></summary><div class='docblock'>Releases a shared lock. <a href="../../lock_api/rwlock/trait.RawRwLock.html#tymethod.unlock_shared">Read more</a></div></details><details class="toggle method-toggle" ope
|
|||
|
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allowing any thread to take an exclusive lock in the meantime. <a href="../../lock_api/rwlock/trait.RawRwLockDowngrade.html#tymethod.downgrade">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-RawRwLockUpgrade-for-RwLock%3C(),+R%3E" class="impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#856-902">source</a><a href="#impl-RawRwLockUpgrade-for-RwLock%3C(),+R%3E" class="anchor">§</a><h3 class="code-header">impl<R: <a class="trait" href="../relax/trait.RelaxStrategy.html" title="trait spin::relax::RelaxStrategy">RelaxStrategy</a>> <a class="trait" href="../../lock_api/rwlock/trait.RawRwLockUpgrade.html" title="trait lock_api::rwlock::RawRwLockUpgrade">RawRwLockUpgrade</a> for <a class="struct" href="struct.RwLock.html" title="struct spin::rwlock::RwLock">RwLock</a><<a class="primitive" href="https://doc.rust-lang.org/1.82.0/core/primitive.unit.html">()</a>, R></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.lock_upgradable" class="method trait-impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#858-861">source</a><a href="#method.lock_upgradable" class="anchor">§</a><h4 class="code-header">fn <a href="../../lock_api/rwlock/trait.RawRwLockUpgrade.html#tymethod.lock_upgradable" class="fn">lock_upgradable</a>(&self)</h4></section></summary><div class='docblock'>Acquires an upgradable lock, blocking the current thread until it is able to do so.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_lock_upgradable" class="method trait-impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#864-869">source</a><a href="#method.try_lock_upgradable" class="anchor">§</a><h4 class="code-header">fn <a href="../../lock_api/rwlock/trait.RawRwLockUpgrade.html#tymethod.try_lock_upgradable" class="fn">try_lock_upgradable</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.82.0/core/primitive.bool.html">bool</a></h4></section></summary><div class='docblock'>Attempts to acquire an upgradable lock without blocking.</div></details><details class="toggle method-toggle" open><summary><section id="method.unlock_upgradable" class="method trait-impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#872-878">source</a><a href="#method.unlock_upgradable" class="anchor">§</a><h4 class="code-header">unsafe fn <a href="../../lock_api/rwlock/trait.RawRwLockUpgrade.html#tymethod.unlock_upgradable" class="fn">unlock_upgradable</a>(&self)</h4></section></summary><div class='docblock'>Releases an upgradable lock. <a href="../../lock_api/rwlock/trait.RawRwLockUpgrade.html#tymethod.unlock_upgradable">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.upgrade" class="method trait-impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#881-888">source</a><a href="#method.upgrade" class="anchor">§</a><h4 class="code-header">unsafe fn <a href="../../lock_api/rwlock/trait.RawRwLockUpgrade.html#tymethod.upgrade" class="fn">upgrade</a>(&self)</h4></section></summary><div class='docblock'>Upgrades an upgradable lock to an exclusive lock. <a href="../../lock_api/rwlock/trait.RawRwLockUpgrade.html#tymethod.upgrade">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.try_upgrade" class="method trait-impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#891-901">source</a><a href="#method.try_upgrade" class="anchor">§</a><h4 class="code-header">unsafe fn <a href="../../lock_api/rwlock/trait.RawRwLockUpgrade.html#tymethod.try_upgrade" class="fn">try_upgrade</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.82.0/core/primitive.bool.html">bool</a></h4></section></summary><div class='docblock'>Attempts to upgrade an upgradable lock to an exclusive lock without
|
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blocking. <a href="../../lock_api/rwlock/trait.RawRwLockUpgrade.html#tymethod.try_upgrade">Read more</a></div></details></div></details><section id="impl-Send-for-RwLock%3CT,+R%3E" class="impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#111">source</a><a href="#impl-Send-for-RwLock%3CT,+R%3E" class="anchor">§</a><h3 class="code-header">impl<T: ?<a class="trait" href="https://doc.rust-lang.org/1.82.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>, R> <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="struct.RwLock.html" title="struct spin::rwlock::RwLock">RwLock</a><T, R></h3></section><section id="impl-Sync-for-RwLock%3CT,+R%3E" class="impl"><a class="src rightside" href="../../src/spin/rwlock.rs.html#112">source</a><a href="#impl-Sync-for-RwLock%3CT,+R%3E" class="anchor">§</a><h3 class="code-header">impl<T: ?<a class="trait" href="https://doc.rust-lang.org/1.82.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>, R> <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="struct.RwLock.html" title="struct spin::rwlock::RwLock">RwLock</a><T, R></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-RwLock%3CT,+R%3E" class="impl"><a href="#impl-Freeze-for-RwLock%3CT,+R%3E" class="anchor">§</a><h3 class="code-header">impl<T, R = <a class="struct" href="../relax/struct.Spin.html" title="struct spin::relax::Spin">Spin</a>> !<a class="trait" href="https://doc.rust-lang.org/1.82.0/core/marker/trait.Freeze.html" title="trait core::marker::Freeze">Freeze</a> for <a class="struct" href="struct.RwLock.html" title="struct spin::rwlock::RwLock">RwLock</a><T, R></h3></section><section id="impl-RefUnwindSafe-for-RwLock%3CT,+R%3E" class="impl"><a href="#impl-RefUnwindSafe-for-RwLock%3CT,+R%3E" class="anchor">§</a><h3 class="code-header">impl<T, R = <a class="struct" href="../relax/struct.Spin.html" title="struct spin::relax::Spin">Spin</a>> !<a class="trait" href="https://doc.rust-lang.org/1.82.0/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="struct.RwLock.html" title="struct spin::rwlock::RwLock">RwLock</a><T, R></h3></section><section id="impl-Unpin-for-RwLock%3CT,+R%3E" class="impl"><a href="#impl-Unpin-for-RwLock%3CT,+R%3E" class="anchor">§</a><h3 class="code-header">impl<T, R> <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="struct.RwLock.html" title="struct spin::rwlock::RwLock">RwLock</a><T, R><div class="where">where
|
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R: <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a>,
|
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|
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T: <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> + ?<a class="trait" href="https://doc.rust-lang.org/1.82.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section><section id="impl-UnwindSafe-for-RwLock%3CT,+R%3E" class="impl"><a href="#impl-UnwindSafe-for-RwLock%3CT,+R%3E" class="anchor">§</a><h3 class="code-header">impl<T, R> <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="struct" href="struct.RwLock.html" title="struct spin::rwlock::RwLock">RwLock</a><T, R><div class="where">where
|
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|
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R: <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a>,
|
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T: <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> + ?<a class="trait" href="https://doc.rust-lang.org/1.82.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></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/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/core/any/trait.Any.html#tymethod.type_id" class="fn">type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/core/borrow/trait.Borrow.html#tymethod.borrow" class="fn">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fn">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/1.82.0/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/1.82.0/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%3C!%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.82.0/src/core/convert/mod.rs.html#782">source</a><a href="#impl-From%3C!%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><<a class="primitive" href="https://doc.rust-lang.org/1.82.0/core/primitive.never.html">!</a>> for T</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from-2" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.82.0/src/core/convert/mod.rs.html#783">source</a><a href="#method.from-2" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.82.0/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(t: <a class="primitive" href="https://doc.rust-lang.org/1.82.0/core/primitive.never.html">!</a>) -> T</h4></section></summary><div class='docblock'>Converts to this type from the input type.</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/1.82.0/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/1.82.0/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-1" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.82.0/src/core/convert/mod.rs.html#768">source</a><a href="#method.from-1" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/1.82.0/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/1.82.0/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/1.82.0/core/convert/trait.TryFrom.html#tymethod.try_from" class="fn">try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/1.82.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/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/1.82.0/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.82.0/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/1.82.0/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/1.82.0/core/convert/trait.TryInto.html#tymethod.try_into" class="fn">try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/1.82.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/1.82.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.82.0/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>
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