<!DOCTYPE html><htmllang="en"><head><metacharset="utf-8"><metaname="viewport"content="width=device-width, initial-scale=1.0"><metaname="generator"content="rustdoc"><metaname="description"content="Collects and records trace data."><title>tracing::subscriber - Rust</title><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><linkrel="stylesheet"href="../../static.files/normalize-76eba96aa4d2e634.css"><linkrel="stylesheet"href="../../static.files/rustdoc-5bc39a1768837dd0.css"><metaname="rustdoc-vars"data-root-path="../../"data-static-root-path="../../static.files/"data-current-crate="tracing"data-themes=""data-resource-suffix=""data-rustdoc-version="1.77.1 (7cf61ebde 2024-03-27)"data-channel="1.77.1"data-search-js="search-dd67cee4cfa65049.js"data-settings-js="settings-4313503d2e1961c2.js"><scriptsrc="../../static.files/storage-4c98445ec4002617.js"></script><scriptdefersrc="../sidebar-items.js"></script><scriptdefersrc="../../static.files/main-48f368f3872407c8.js"></script><noscript><linkrel="stylesheet"href="../../static.files/noscript-04d5337699b92874.css"></noscript><linkrel="alternate icon"type="image/png"href="../../static.files/favicon-16x16-8b506e7a72182f1c.png"><linkrel="alternate icon"type="image/png"href="../../static.files/favicon-32x32-422f7d1d52889060.png"><linkrel="icon"type="image/svg+xml"href="../../static.files/favicon-2c020d218678b618.svg"></head><bodyclass="rustdoc mod"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><navclass="mobile-topbar"><buttonclass="sidebar-menu-toggle"title="show sidebar"></button><aclass="logo-container"href="../../tracing/index.html"><imgsrc="https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png"alt=""></a></nav><navclass="sidebar"><divclass="sidebar-crate"><aclass="logo-container"href="../../tracing/index.html"><imgsrc="https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png"alt="logo"></a><h2><ahref="../../tracing/index.html">tracing</a><spanclass="version">0.1.40</span></h2></div><h2class="location"><ahref="#">Module subscriber</a></h2><divclass="sidebar-elems"><section><ulclass="block"><li><ahref="#structs">Structs</a></li><li><ahref="#traits">Traits</a></li><li><ahref="#functions">Functions</a></li></ul></section><h2><ahref="../index.html">In crate tracing</a></h2></div></nav><divclass="sidebar-resizer"></div>
<main><divclass="width-limiter"><navclass="sub"><formclass="search-form"><span></span><divid="sidebar-button"tabindex="-1"><ahref="../../tracing/all.html"title="show sidebar"></a></div><inputclass="search-input"name="search"aria-label="Run search in the documentation"autocomplete="off"spellcheck="false"placeholder="Click or press ‘S’ to search, ‘?’ for more options…"type="search"><divid="help-button"tabindex="-1"><ahref="../../help.html"title="help">?</a></div><divid="settings-menu"tabindex="-1"><ahref="../../settings.html"title="settings"><imgwidth="22"height="22"alt="Change settings"src="../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><sectionid="main-content"class="content"><divclass="main-heading"><h1>Module <ahref="../index.html">tracing</a>::<wbr><aclass="mod"href="#">subscriber</a><buttonid="copy-path"title="Copy item path to clipboard"><imgsrc="../../static.files/clipboard-7571035ce49a181d.svg"width="19"height="18"alt="Copy item path"></button></h1><spanclass="out-of-band"><aclass="src"href="../../src/tracing/subscriber.rs.html#1-65">source</a> · <buttonid="toggle-all-docs"title="collapse all docs">[<span>−</span>]</button></span></div><detailsclass="toggle top-doc"open><summaryclass="hideme"><span>Expand description</span></summary><divclass="docblock"><p>Collects and records trace data.</p>
</div></details><h2id="structs"class="section-header">Structs<ahref="#structs"class="anchor">§</a></h2><ulclass="item-table"><li><divclass="item-name"><aclass="struct"href="struct.DefaultGuard.html"title="struct tracing::subscriber::DefaultGuard">DefaultGuard</a></div><divclass="desc docblock-short">A guard that resets the current default dispatcher to the prior
default dispatcher when dropped.</div></li><li><divclass="item-name"><aclass="struct"href="struct.Interest.html"title="struct tracing::subscriber::Interest">Interest</a></div><divclass="desc docblock-short">Indicates a <ahref="../trait.Subscriber.html"title="trait tracing::Subscriber"><code>Subscriber</code></a>’s interest in a particular callsite.</div></li><li><divclass="item-name"><aclass="struct"href="struct.NoSubscriber.html"title="struct tracing::subscriber::NoSubscriber">NoSubscriber</a></div><divclass="desc docblock-short">A no-op <ahref="../trait.Subscriber.html"title="trait tracing::Subscriber"><code>Subscriber</code></a>.</div></li><li><divclass="item-name"><aclass="struct"href="struct.SetGlobalDefaultError.html"title="struct tracing::subscriber::SetGlobalDefaultError">SetGlobalDefaultError</a></div><divclass="desc docblock-short">Returned if setting the global dispatcher fails.</div></li></ul><h2id="traits"class="section-header">Traits<ahref="#traits"class="anchor">§</a></h2><ulclass="item-table"><li><divclass="item-name"><aclass="trait"href="trait.Subscriber.html"title="trait tracing::subscriber::Subscriber">Subscriber</a></div><divclass="desc docblock-short">Trait representing the functions required to collect trace data.</div></li></ul><h2id="functions"class="section-header">Functions<ahref="#functions"class="anchor">§</a></h2><ulclass="item-table"><li><divclass="item-name"><aclass="fn"href="fn.set_default.html"title="fn tracing::subscriber::set_default">set_default</a></div><divclass="desc docblock-short">Sets the <ahref="../trait.Subscriber.html"title="trait tracing::Subscriber"><code>Subscriber</code></a> as the default for the current thread for the
duration of the lifetime of the returned <ahref="struct.DefaultGuard.html"title="struct tracing::subscriber::DefaultGuard"><code>DefaultGuard</code></a>.</div></li><li><divclass="item-name"><aclass="fn"href="fn.set_global_default.html"title="fn tracing::subscriber::set_global_default">set_global_default</a></div><divclass="desc docblock-short">Sets this subscriber as the global default for the duration of the entire program.
Will be used as a fallback if no thread-local subscriber has been set in a thread (using <code>with_default</code>.)</div></li><li><divclass="item-name"><aclass="fn"href="fn.with_default.html"title="fn tracing::subscriber::with_default">with_default</a></div><divclass="desc docblock-short">Sets this <ahref="../trait.Subscriber.html"title="trait tracing::Subscriber"><code>Subscriber</code></a> as the default for the current thread for the
duration of a closure.</div></li></ul></section></div></main></body></html>
