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 </pre><pre class="rust"><code><span class="kw">use</span> <span class="ident">std::fmt</span>::{<span class="self">self</span>, <span class="ident">Debug</span>};
 <span class="kw">use</span> <span class="ident">std::thread</span>::{<span class="self">self</span>, <span class="ident">ThreadId</span>};

 <span class="doccomment">/// ThreadBound is a Sync-maker and Send-maker that allows accessing a value</span>
 <span class="doccomment">/// of type T only from the original thread on which the ThreadBound was</span>
 <span class="doccomment">/// constructed.</span>
 <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ThreadBound</span><span class="op">&lt;</span><span class="ident">T</span><span class="op">&gt;</span> {
     <span class="ident">value</span>: <span class="ident">T</span>,
     <span class="ident">thread_id</span>: <span class="ident">ThreadId</span>,
 }

 <span class="kw">unsafe</span> <span class="kw">impl</span><span class="op">&lt;</span><span class="ident">T</span><span class="op">&gt;</span> <span class="ident">Sync</span> <span class="kw">for</span> <span class="ident">ThreadBound</span><span class="op">&lt;</span><span class="ident">T</span><span class="op">&gt;</span> {}

 <span class="comment">// Send bound requires Copy, as otherwise Drop could run in the wrong place.</span>
 <span class="kw">unsafe</span> <span class="kw">impl</span><span class="op">&lt;</span><span class="ident">T</span>: <span class="ident">Copy</span><span class="op">&gt;</span> <span class="ident">Send</span> <span class="kw">for</span> <span class="ident">ThreadBound</span><span class="op">&lt;</span><span class="ident">T</span><span class="op">&gt;</span> {}

 <span class="kw">impl</span><span class="op">&lt;</span><span class="ident">T</span><span class="op">&gt;</span> <span class="ident">ThreadBound</span><span class="op">&lt;</span><span class="ident">T</span><span class="op">&gt;</span> {
     <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">value</span>: <span class="ident">T</span>) -&gt; <span class="self">Self</span> {
         <span class="ident">ThreadBound</span> {
             <span class="ident">value</span>,
             <span class="ident">thread_id</span>: <span class="ident">thread::current</span>().<span class="ident">id</span>(),
         }
     }

     <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="kw-2">&amp;</span><span class="ident">T</span><span class="op">&gt;</span> {
         <span class="kw">if</span> <span class="ident">thread::current</span>().<span class="ident">id</span>() <span class="op">==</span> <span class="self">self</span>.<span class="ident">thread_id</span> {
             <span class="prelude-val">Some</span>(<span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">value</span>)
         } <span class="kw">else</span> {
             <span class="prelude-val">None</span>
         }
     }
 }

 <span class="kw">impl</span><span class="op">&lt;</span><span class="ident">T</span>: <span class="ident">Debug</span><span class="op">&gt;</span> <span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">ThreadBound</span><span class="op">&lt;</span><span class="ident">T</span><span class="op">&gt;</span> {
     <span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">formatter</span>: <span class="kw-2">&amp;mut</span> <span class="ident">fmt::Formatter</span>) -&gt; <span class="ident">fmt::Result</span> {
         <span class="kw">match</span> <span class="self">self</span>.<span class="ident">get</span>() {
             <span class="prelude-val">Some</span>(<span class="ident">value</span>) =&gt; <span class="ident">Debug::fmt</span>(<span class="ident">value</span>, <span class="ident">formatter</span>),
             <span class="prelude-val">None</span> =&gt; <span class="ident">formatter</span>.<span class="ident">write_str</span>(<span class="string">&quot;unknown&quot;</span>),
         }
     }
 }
 </code></pre></div>
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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="Source of the Rust file `/home/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/syn-1.0.85/src/thread.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>thread.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled><link rel="stylesheet" type="text/css" href="../../dark.css" disabled><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script src="../../crates.js"></script><script defer src="../../main.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script>
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	<input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../../settings.html" title="settings"><img width="18" height="18" alt="Change settings" src="../../wheel.svg"></a></div></form></nav></div><section id="main-content" class="content"><div class="example-wrap"><pre class="line-numbers"><span id="1"> 1</span>
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	</pre><pre class="rust"><code><span class="kw">use</span> <span class="ident">std::fmt</span>::{<span class="self">self</span>, <span class="ident">Debug</span>};
	<span class="kw">use</span> <span class="ident">std::thread</span>::{<span class="self">self</span>, <span class="ident">ThreadId</span>};

	<span class="doccomment">/// ThreadBound is a Sync-maker and Send-maker that allows accessing a value</span>
	<span class="doccomment">/// of type T only from the original thread on which the ThreadBound was</span>
	<span class="doccomment">/// constructed.</span>
	<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ThreadBound</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {
	<span class="ident">value</span>: <span class="ident">T</span>,
	<span class="ident">thread_id</span>: <span class="ident">ThreadId</span>,
	}

	<span class="kw">unsafe</span> <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="ident">Sync</span> <span class="kw">for</span> <span class="ident">ThreadBound</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {}

	<span class="comment">// Send bound requires Copy, as otherwise Drop could run in the wrong place.</span>
	<span class="kw">unsafe</span> <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Copy</span><span class="op">></span> <span class="ident">Send</span> <span class="kw">for</span> <span class="ident">ThreadBound</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {}

	<span class="kw">impl</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="ident">ThreadBound</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {
	<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">value</span>: <span class="ident">T</span>) -> <span class="self">Self</span> {
	<span class="ident">ThreadBound</span> {
	<span class="ident">value</span>,
	<span class="ident">thread_id</span>: <span class="ident">thread::current</span>().<span class="ident">id</span>(),
	}
	}

	<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">T</span><span class="op">></span> {
	<span class="kw">if</span> <span class="ident">thread::current</span>().<span class="ident">id</span>() <span class="op">==</span> <span class="self">self</span>.<span class="ident">thread_id</span> {
	<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">value</span>)
	} <span class="kw">else</span> {
	<span class="prelude-val">None</span>
	}
	}
	}

	<span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Debug</span><span class="op">></span> <span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">ThreadBound</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {
	<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">formatter</span>: <span class="kw-2">&mut</span> <span class="ident">fmt::Formatter</span>) -> <span class="ident">fmt::Result</span> {
	<span class="kw">match</span> <span class="self">self</span>.<span class="ident">get</span>() {
	<span class="prelude-val">Some</span>(<span class="ident">value</span>) => <span class="ident">Debug::fmt</span>(<span class="ident">value</span>, <span class="ident">formatter</span>),
	<span class="prelude-val">None</span> => <span class="ident">formatter</span>.<span class="ident">write_str</span>(<span class="string">"unknown"</span>),
	}
	}
	}
	</code></pre></div>
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