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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="API documentation for the Rust `Callsite` trait in crate `tracing_core`."><meta name="keywords" content="rust, rustlang, rust-lang, Callsite"><title>tracing_core::Callsite - Rust</title><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="../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../ayu.css" disabled ><script id="default-settings"></script><script src="../storage.js"></script><noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="icon" type="image/svg+xml" href="../favicon.svg">
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<link rel="alternate icon" type="image/png" href="../favicon-32x32.png"><style type="text/css">#crate-search{background-image:url("../down-arrow.svg");}</style></head><body class="rustdoc trait"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">&#9776;</div><a href='../tracing_core/index.html'><div class='logo-container'><img src='https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png' alt='logo'></div></a><p class="location">Trait Callsite</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.metadata">metadata</a><a href="#tymethod.set_interest">set_interest</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class="location"><a href="index.html">tracing_core</a></p><script>window.sidebarCurrent = {name: "Callsite", ty: "trait", relpath: ""};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu"><img src="../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices" role="menu"></div></div><script src="../theme.js"></script><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press S to search, ? for more options…" type="search"></div><button type="button" class="help-button">?</button>
<a id="settings-menu" href="../settings.html"><img src="../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class="fqn"><span class="out-of-band"><span id="render-detail"><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span><a class="srclink" href="../src/tracing_core/callsite.rs.html#77-87" title="goto source code">[src]</a></span><span class="in-band">Trait <a href="index.html">tracing_core</a>::<wbr><a class="trait" href="">Callsite</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class="rust trait">pub trait Callsite: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> {
fn <a href="#tymethod.set_interest" class="fnname">set_interest</a>(&amp;self, interest: <a class="struct" href="../tracing_core/subscriber/struct.Interest.html" title="struct tracing_core::subscriber::Interest">Interest</a>);
<div class="item-spacer"></div> fn <a href="#tymethod.metadata" class="fnname">metadata</a>(&amp;self) -&gt; &amp;<a class="struct" href="../tracing_core/struct.Metadata.html" title="struct tracing_core::Metadata">Metadata</a>&lt;'_&gt;;
}</pre></div><div class="docblock"><p>Trait implemented by callsites.</p>
<p>These functions are only intended to be called by the callsite registry, which
correctly handles determining the common interest between all subscribers.</p>
</div><h2 id="required-methods" class="small-section-header">Required methods<a href="#required-methods" class="anchor"></a></h2><div class="methods"><h3 id="tymethod.set_interest" class="method"><code>fn <a href="#tymethod.set_interest" class="fnname">set_interest</a>(&amp;self, interest: <a class="struct" href="../tracing_core/subscriber/struct.Interest.html" title="struct tracing_core::subscriber::Interest">Interest</a>)</code><a class="srclink" href="../src/tracing_core/callsite.rs.html#81" title="goto source code">[src]</a></h3><div class="docblock"><p>Sets the <a href="../subscriber/struct.Interest.html"><code>Interest</code></a> for this callsite.</p>
</div><h3 id="tymethod.metadata" class="method"><code>fn <a href="#tymethod.metadata" class="fnname">metadata</a>(&amp;self) -&gt; &amp;<a class="struct" href="../tracing_core/struct.Metadata.html" title="struct tracing_core::Metadata">Metadata</a>&lt;'_&gt;</code><a class="srclink" href="../src/tracing_core/callsite.rs.html#86" title="goto source code">[src]</a></h3><div class="docblock"><p>Returns the <a href="../metadata/struct.Metadata.html">metadata</a> associated with the callsite.</p>
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