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28 lines
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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 trait encapsulating the operations required of a logger."><title>Log in log - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../static.files/rustdoc-ca0dd0c4.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="log" data-themes="" data-resource-suffix="" data-rustdoc-version="1.93.1 (01f6ddf75 2026-02-11) (Arch Linux rust 1:1.93.1-1)" data-channel="1.93.1" data-search-js="search-9e2438ea.js" data-stringdex-js="stringdex-a3946164.js" data-settings-js="settings-c38705f0.js" ><script src="../static.files/storage-e2aeef58.js"></script><script defer src="sidebar-items.js"></script><script defer src="../static.files/main-a410ff4d.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-263c88ec.css"></noscript><link rel="icon" href="https://prev.rust-lang.org/favicon.ico"></head><body class="rustdoc trait"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><rustdoc-topbar><h2><a href="#">Log</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><a class="logo-container" href="../log/index.html"><img src="https://prev.rust-lang.org/logos/rust-logo-128x128-blk-v2.png" alt="logo"></a><h2><a href="../log/index.html">log</a><span class="version">0.4.29</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Log</a></h2><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.enabled" title="enabled">enabled</a></li><li><a href="#tymethod.flush" title="flush">flush</a></li><li><a href="#tymethod.log" title="log">log</a></li></ul><h3><a href="#foreign-impls">Implementations on Foreign Types</a></h3><ul class="block"><li><a href="#impl-Log-for-%26T" title="&T">&T</a></li><li><a href="#impl-Log-for-Arc%3CT%3E" title="Arc<T>">Arc<T></a></li><li><a href="#impl-Log-for-Box%3CT%3E" title="Box<T>">Box<T></a></li></ul><h3><a href="#implementors">Implementors</a></h3></section><div id="rustdoc-modnav"><h2 class="in-crate"><a href="index.html">In crate log</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><section id="main-content" class="content"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="index.html">log</a></div><h1>Trait <span class="trait">Log</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/log/lib.rs.html#1249-1280">Source</a> </span></div><pre class="rust item-decl"><code>pub trait Log: <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> {
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// Required methods
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fn <a href="#tymethod.enabled" class="fn">enabled</a>(&self, metadata: &<a class="struct" href="struct.Metadata.html" title="struct log::Metadata">Metadata</a><'_>) -> <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a>;
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<span class="item-spacer"></span> fn <a href="#tymethod.log" class="fn">log</a>(&self, record: &<a class="struct" href="struct.Record.html" title="struct log::Record">Record</a><'_>);
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<span class="item-spacer"></span> fn <a href="#tymethod.flush" class="fn">flush</a>(&self);
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}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>A trait encapsulating the operations required of a logger.</p>
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</div></details><h2 id="required-methods" class="section-header">Required Methods<a href="#required-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="tymethod.enabled" class="method"><a class="src rightside" href="../src/log/lib.rs.html#1262">Source</a><h4 class="code-header">fn <a href="#tymethod.enabled" class="fn">enabled</a>(&self, metadata: &<a class="struct" href="struct.Metadata.html" title="struct log::Metadata">Metadata</a><'_>) -> <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Determines if a log message with the specified metadata would be
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logged.</p>
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<p>This is used by the <code>log_enabled!</code> macro to allow callers to avoid
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expensive computation of log message arguments if the message would be
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discarded anyway.</p>
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<h5 id="for-implementors"><a class="doc-anchor" href="#for-implementors">§</a>For implementors</h5>
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<p>This method isn’t called automatically by the <code>log!</code> macros.
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It’s up to an implementation of the <code>Log</code> trait to call <code>enabled</code> in its own
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<code>log</code> method implementation to guarantee that filtering is applied.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.log" class="method"><a class="src rightside" href="../src/log/lib.rs.html#1271">Source</a><h4 class="code-header">fn <a href="#tymethod.log" class="fn">log</a>(&self, record: &<a class="struct" href="struct.Record.html" title="struct log::Record">Record</a><'_>)</h4></section></summary><div class="docblock"><p>Logs the <code>Record</code>.</p>
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<h5 id="for-implementors-1"><a class="doc-anchor" href="#for-implementors-1">§</a>For implementors</h5>
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<p>Note that <code>enabled</code> is <em>not</em> necessarily called before this method.
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Implementations of <code>log</code> should perform all necessary filtering
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internally.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.flush" class="method"><a class="src rightside" href="../src/log/lib.rs.html#1279">Source</a><h4 class="code-header">fn <a href="#tymethod.flush" class="fn">flush</a>(&self)</h4></section></summary><div class="docblock"><p>Flushes any buffered records.</p>
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<h5 id="for-implementors-2"><a class="doc-anchor" href="#for-implementors-2">§</a>For implementors</h5>
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<p>This method isn’t called automatically by the <code>log!</code> macros.
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It can be called manually on shut-down to ensure any in-flight records are flushed.</p>
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</div></details></div><h2 id="foreign-impls" class="section-header">Implementations on Foreign Types<a href="#foreign-impls" class="anchor">§</a></h2><details class="toggle implementors-toggle"><summary><section id="impl-Log-for-%26T" class="impl"><a class="src rightside" href="../src/log/lib.rs.html#1294-1308">Source</a><a href="#impl-Log-for-%26T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="trait.Log.html" title="trait log::Log">Log</a> for <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.reference.html">&T</a><div class="where">where
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T: ?<a class="trait" href="https://doc.rust-lang.org/1.93.1/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="trait.Log.html" title="trait log::Log">Log</a>,</div></h3></section></summary><div class="impl-items"><section id="method.enabled" class="method trait-impl"><a class="src rightside" href="../src/log/lib.rs.html#1298-1300">Source</a><a href="#method.enabled" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.enabled" class="fn">enabled</a>(&self, metadata: &<a class="struct" href="struct.Metadata.html" title="struct log::Metadata">Metadata</a><'_>) -> <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section><section id="method.log" class="method trait-impl"><a class="src rightside" href="../src/log/lib.rs.html#1302-1304">Source</a><a href="#method.log" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.log" class="fn">log</a>(&self, record: &<a class="struct" href="struct.Record.html" title="struct log::Record">Record</a><'_>)</h4></section><section id="method.flush" class="method trait-impl"><a class="src rightside" href="../src/log/lib.rs.html#1305-1307">Source</a><a href="#method.flush" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.flush" class="fn">flush</a>(&self)</h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Log-for-Box%3CT%3E" class="impl"><a class="src rightside" href="../src/log/lib.rs.html#1311-1325">Source</a><a href="#impl-Log-for-Box%3CT%3E" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="trait.Log.html" title="trait log::Log">Log</a> for <a class="struct" href="https://doc.rust-lang.org/1.93.1/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><T><div class="where">where
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T: ?<a class="trait" href="https://doc.rust-lang.org/1.93.1/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="trait.Log.html" title="trait log::Log">Log</a>,</div></h3><span class="item-info"><div class="stab portability">Available on <strong>crate feature <code>std</code></strong> only.</div></span></section></summary><div class="impl-items"><section id="method.enabled-1" class="method trait-impl"><a class="src rightside" href="../src/log/lib.rs.html#1315-1317">Source</a><a href="#method.enabled-1" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.enabled" class="fn">enabled</a>(&self, metadata: &<a class="struct" href="struct.Metadata.html" title="struct log::Metadata">Metadata</a><'_>) -> <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section><section id="method.log-1" class="method trait-impl"><a class="src rightside" href="../src/log/lib.rs.html#1319-1321">Source</a><a href="#method.log-1" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.log" class="fn">log</a>(&self, record: &<a class="struct" href="struct.Record.html" title="struct log::Record">Record</a><'_>)</h4></section><section id="method.flush-1" class="method trait-impl"><a class="src rightside" href="../src/log/lib.rs.html#1322-1324">Source</a><a href="#method.flush-1" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.flush" class="fn">flush</a>(&self)</h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Log-for-Arc%3CT%3E" class="impl"><a class="src rightside" href="../src/log/lib.rs.html#1328-1342">Source</a><a href="#impl-Log-for-Arc%3CT%3E" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="trait.Log.html" title="trait log::Log">Log</a> for <a class="struct" href="https://doc.rust-lang.org/1.93.1/alloc/sync/struct.Arc.html" title="struct alloc::sync::Arc">Arc</a><T><div class="where">where
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T: ?<a class="trait" href="https://doc.rust-lang.org/1.93.1/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="trait.Log.html" title="trait log::Log">Log</a>,</div></h3><span class="item-info"><div class="stab portability">Available on <strong>crate feature <code>std</code></strong> only.</div></span></section></summary><div class="impl-items"><section id="method.enabled-2" class="method trait-impl"><a class="src rightside" href="../src/log/lib.rs.html#1332-1334">Source</a><a href="#method.enabled-2" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.enabled" class="fn">enabled</a>(&self, metadata: &<a class="struct" href="struct.Metadata.html" title="struct log::Metadata">Metadata</a><'_>) -> <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section><section id="method.log-2" class="method trait-impl"><a class="src rightside" href="../src/log/lib.rs.html#1336-1338">Source</a><a href="#method.log-2" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.log" class="fn">log</a>(&self, record: &<a class="struct" href="struct.Record.html" title="struct log::Record">Record</a><'_>)</h4></section><section id="method.flush-2" class="method trait-impl"><a class="src rightside" href="../src/log/lib.rs.html#1339-1341">Source</a><a href="#method.flush-2" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.flush" class="fn">flush</a>(&self)</h4></section></div></details><h2 id="implementors" class="section-header">Implementors<a href="#implementors" class="anchor">§</a></h2><div id="implementors-list"></div><script src="../trait.impl/log/trait.Log.js" data-ignore-extern-crates="alloc" async></script></section></div></main></body></html> |