70 lines
34 KiB
HTML
70 lines
34 KiB
HTML
<!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="Metadata describing a span or event."><meta name="keywords" content="rust, rustlang, rust-lang, Metadata"><title>Metadata in tracing_core - Rust</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>
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<noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../favicon.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="sidebar"><div class="sidebar-menu" role="button">☰</div><a class="sidebar-logo" 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>
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</a><h2 class="location">Struct Metadata</h2><div class="sidebar-elems"><div class="block items"><h3 class="sidebar-title"><a href="#implementations">Methods</a></h3><div class="sidebar-links"><a href="#method.callsite">callsite</a><a href="#method.fields">fields</a><a href="#method.file">file</a><a href="#method.is_event">is_event</a><a href="#method.is_span">is_span</a><a href="#method.level">level</a><a href="#method.line">line</a><a href="#method.module_path">module_path</a><a href="#method.name">name</a><a href="#method.new">new</a><a href="#method.target">target</a></div><h3 class="sidebar-title"><a href="#trait-implementations">Trait Implementations</a></h3><div class="sidebar-links"><a href="#impl-Debug">Debug</a></div><h3 class="sidebar-title"><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><div class="sidebar-links"><a href="#impl-RefUnwindSafe">!RefUnwindSafe</a><a href="#impl-Send">Send</a><a href="#impl-Sync">Sync</a><a href="#impl-Unpin">Unpin</a><a href="#impl-UnwindSafe">!UnwindSafe</a></div><h3 class="sidebar-title"><a href="#blanket-implementations">Blanket Implementations</a></h3><div class="sidebar-links"><a href="#impl-Any">Any</a><a href="#impl-Borrow%3CT%3E">Borrow<T></a><a href="#impl-BorrowMut%3CT%3E">BorrowMut<T></a><a href="#impl-From%3CT%3E">From<T></a><a href="#impl-Into%3CU%3E">Into<U></a><a href="#impl-TryFrom%3CU%3E">TryFrom<U></a><a href="#impl-TryInto%3CU%3E">TryInto<U></a></div></div><h2 class="location">Other items in<br><a href="index.html">tracing_core</a></h2><div id="sidebar-vars" data-name="Metadata" data-ty="struct" data-relpath=""></div><script defer src="sidebar-items.js"></script></div></nav><main><div class="width-limiter"><div class="sub-container"><a class="sub-logo-container" href="../tracing_core/index.html"><img src="https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png" alt="logo"></a><nav class="sub"><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="18" height="18" alt="Pick another theme!" src="../brush.svg"></button><div id="theme-choices" role="menu"></div></div><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" 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"><h1 class="fqn"><span class="in-band">Struct <a href="index.html">tracing_core</a>::<wbr><a class="struct" href="#">Metadata</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../clipboard.svg" width="19" height="18" alt="Copy item path"></button></span><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">−</span>]</a></span><a class="srclink" href="../src/tracing_core/metadata.rs.html#60-89" title="goto source code">[src]</a></span></h1><div class="docblock item-decl"><pre class="rust struct"><code>pub struct Metadata<'a> { /* fields omitted */ }</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Metadata describing a <a href="../span/index.html">span</a> or <a href="../event/index.html">event</a>.</p>
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<p>All spans and events have the following metadata:</p>
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<ul>
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<li>A <a href="#method.name">name</a>, represented as a static string.</li>
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<li>A <a href="#method.target">target</a>, a string that categorizes part of the system where the span
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or event occurred. The <code>tracing</code> macros default to using the module
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path where the span or event originated as the target, but it may be
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overridden.</li>
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<li>A <a href="#method.level">verbosity level</a>. This determines how verbose a given span or event
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is, and allows enabling or disabling more verbose diagnostics
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situationally. See the documentation for the <a href="struct.Level.html" title="Level"><code>Level</code></a> type for details.</li>
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<li>The names of the <a href="#method.fields">fields</a> defined by the span or event.</li>
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<li>Whether the metadata corresponds to a span or event.</li>
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</ul>
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<p>In addition, the following optional metadata describing the source code
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location where the span or event originated <em>may</em> be provided:</p>
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<ul>
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<li>The <a href="#method.file">file name</a></li>
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<li>The <a href="#method.line">line number</a></li>
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<li>The <a href="#method.module">module path</a></li>
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</ul>
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<p>Metadata is used by <a href="../subscriber/trait.Subscriber.html"><code>Subscriber</code></a>s when filtering spans and events, and it
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may also be used as part of their data payload.</p>
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<p>When created by the <code>event!</code> or <code>span!</code> macro, the metadata describing a
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particular event or span is constructed statically and exists as a single
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static instance. Thus, the overhead of creating the metadata is
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<em>significantly</em> lower than that of creating the actual span. Therefore,
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filtering is based on metadata, rather than on the constructed span.</p>
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<pre class="ignore" style="white-space:normal;font:inherit;">
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<strong>Note</strong>: Although instances of <code>Metadata</code>
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cannot be compared directly, they provide a method
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<a href="struct.Metadata.html#method.id"><code>id</code></a>, returning
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an opaque <a href="../callsite/struct.Identifier.html">callsite
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identifier</a>which uniquely identifies the callsite where the metadata
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originated. This can be used to determine if two <code>Metadata</code>
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correspond to the same callsite.
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</pre>
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</div></details><h2 id="implementations" class="small-section-header">Implementations<a href="#implementations" class="anchor"></a></h2><details class="rustdoc-toggle implementors-toggle" open><summary><div id="impl" class="impl has-srclink"><div class="rightside"><a class="srclink" href="../src/tracing_core/metadata.rs.html#253-336" title="goto source code">[src]</a></div><a href="#impl" class="anchor"></a><h3 class="code-header in-band">impl<'a> <a class="struct" href="struct.Metadata.html" title="struct tracing_core::Metadata">Metadata</a><'a></h3></div></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><div id="method.new" class="method has-srclink"><div class="rightside"><a class="srclink" href="../src/tracing_core/metadata.rs.html#256-276" title="goto source code">[src]</a></div><a href="#method.new" class="anchor"></a><h4 class="code-header">pub const fn <a href="#method.new" class="fnname">new</a>(<br> name: &'static <a class="primitive" href="https://doc.rust-lang.org/1.59.0/std/primitive.str.html">str</a>, <br> target: &'a <a class="primitive" href="https://doc.rust-lang.org/1.59.0/std/primitive.str.html">str</a>, <br> level: <a class="struct" href="struct.Level.html" title="struct tracing_core::Level">Level</a>, <br> file: <a class="enum" href="https://doc.rust-lang.org/1.59.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&'a <a class="primitive" href="https://doc.rust-lang.org/1.59.0/std/primitive.str.html">str</a>>, <br> line: <a class="enum" href="https://doc.rust-lang.org/1.59.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/1.59.0/std/primitive.u32.html">u32</a>>, <br> module_path: <a class="enum" href="https://doc.rust-lang.org/1.59.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&'a <a class="primitive" href="https://doc.rust-lang.org/1.59.0/std/primitive.str.html">str</a>>, <br> fields: <a class="struct" href="field/struct.FieldSet.html" title="struct tracing_core::field::FieldSet">FieldSet</a>, <br> kind: <a class="struct" href="metadata/struct.Kind.html" title="struct tracing_core::metadata::Kind">Kind</a><br>) -> Self</h4></div></summary><div class="docblock"><p>Construct new metadata for a span or event, with a name, target, level, field
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names, and optional source code location.</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.fields" class="method has-srclink"><div class="rightside"><a class="srclink" href="../src/tracing_core/metadata.rs.html#279-281" title="goto source code">[src]</a></div><a href="#method.fields" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.fields" class="fnname">fields</a>(&self) -> &<a class="struct" href="field/struct.FieldSet.html" title="struct tracing_core::field::FieldSet">FieldSet</a></h4></div></summary><div class="docblock"><p>Returns the names of the fields on the described span or event.</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.level" class="method has-srclink"><div class="rightside"><a class="srclink" href="../src/tracing_core/metadata.rs.html#284-286" title="goto source code">[src]</a></div><a href="#method.level" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.level" class="fnname">level</a>(&self) -> &<a class="struct" href="struct.Level.html" title="struct tracing_core::Level">Level</a></h4></div></summary><div class="docblock"><p>Returns the level of verbosity of the described span or event.</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.name" class="method has-srclink"><div class="rightside"><a class="srclink" href="../src/tracing_core/metadata.rs.html#289-291" title="goto source code">[src]</a></div><a href="#method.name" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.name" class="fnname">name</a>(&self) -> &'static <a class="primitive" href="https://doc.rust-lang.org/1.59.0/std/primitive.str.html">str</a></h4></div></summary><div class="docblock"><p>Returns the name of the span.</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.target" class="method has-srclink"><div class="rightside"><a class="srclink" href="../src/tracing_core/metadata.rs.html#298-300" title="goto source code">[src]</a></div><a href="#method.target" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.target" class="fnname">target</a>(&self) -> &'a <a class="primitive" href="https://doc.rust-lang.org/1.59.0/std/primitive.str.html">str</a></h4></div></summary><div class="docblock"><p>Returns a string describing the part of the system where the span or
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event that this metadata describes occurred.</p>
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<p>Typically, this is the module path, but alternate targets may be set
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when spans or events are constructed.</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.module_path" class="method has-srclink"><div class="rightside"><a class="srclink" href="../src/tracing_core/metadata.rs.html#304-306" title="goto source code">[src]</a></div><a href="#method.module_path" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.module_path" class="fnname">module_path</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.59.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&'a <a class="primitive" href="https://doc.rust-lang.org/1.59.0/std/primitive.str.html">str</a>></h4></div></summary><div class="docblock"><p>Returns the path to the Rust module where the span occurred, or
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<code>None</code> if the module path is unknown.</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.file" class="method has-srclink"><div class="rightside"><a class="srclink" href="../src/tracing_core/metadata.rs.html#310-312" title="goto source code">[src]</a></div><a href="#method.file" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.file" class="fnname">file</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.59.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&'a <a class="primitive" href="https://doc.rust-lang.org/1.59.0/std/primitive.str.html">str</a>></h4></div></summary><div class="docblock"><p>Returns the name of the source code file where the span
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occurred, or <code>None</code> if the file is unknown</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.line" class="method has-srclink"><div class="rightside"><a class="srclink" href="../src/tracing_core/metadata.rs.html#316-318" title="goto source code">[src]</a></div><a href="#method.line" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.line" class="fnname">line</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.59.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/1.59.0/std/primitive.u32.html">u32</a>></h4></div></summary><div class="docblock"><p>Returns the line number in the source code file where the span
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occurred, or <code>None</code> if the line number is unknown.</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.callsite" class="method has-srclink"><div class="rightside"><a class="srclink" href="../src/tracing_core/metadata.rs.html#323-325" title="goto source code">[src]</a></div><a href="#method.callsite" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.callsite" class="fnname">callsite</a>(&self) -> <a class="struct" href="callsite/struct.Identifier.html" title="struct tracing_core::callsite::Identifier">Identifier</a></h4></div></summary><div class="docblock"><p>Returns an opaque <code>Identifier</code> that uniquely identifies the callsite
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this <code>Metadata</code> originated from.</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.is_event" class="method has-srclink"><div class="rightside"><a class="srclink" href="../src/tracing_core/metadata.rs.html#328-330" title="goto source code">[src]</a></div><a href="#method.is_event" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.is_event" class="fnname">is_event</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.59.0/std/primitive.bool.html">bool</a></h4></div></summary><div class="docblock"><p>Returns true if the callsite kind is <code>Event</code>.</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.is_span" class="method has-srclink"><div class="rightside"><a class="srclink" href="../src/tracing_core/metadata.rs.html#333-335" title="goto source code">[src]</a></div><a href="#method.is_span" class="anchor"></a><h4 class="code-header">pub fn <a href="#method.is_span" class="fnname">is_span</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.59.0/std/primitive.bool.html">bool</a></h4></div></summary><div class="docblock"><p>Return true if the callsite kind is <code>Span</code>.</p>
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</div></details></div></details><h2 id="trait-implementations" class="small-section-header">Trait Implementations<a href="#trait-implementations" class="anchor"></a></h2><div id="trait-implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><div id="impl-Debug" class="impl has-srclink"><div class="rightside"><a class="srclink" href="../src/tracing_core/metadata.rs.html#338-369" title="goto source code">[src]</a></div><a href="#impl-Debug" class="anchor"></a><h3 class="code-header in-band">impl<'a> <a class="trait" href="https://doc.rust-lang.org/1.59.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="struct.Metadata.html" title="struct tracing_core::Metadata">Metadata</a><'a></h3></div></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><div id="method.fmt" class="method trait-impl has-srclink"><div class="rightside"><a class="srclink" href="../src/tracing_core/metadata.rs.html#339-368" title="goto source code">[src]</a></div><a href="#method.fmt" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.59.0/core/fmt/trait.Debug.html#tymethod.fmt" class="fnname">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/1.59.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/1.59.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></div></summary><div class='docblock'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/1.59.0/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
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</div></details></div></details></div><h2 id="synthetic-implementations" class="small-section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor"></a></h2><div id="synthetic-implementations-list"><div id="impl-RefUnwindSafe" class="impl has-srclink"><div class="rightside"></div><a href="#impl-RefUnwindSafe" class="anchor"></a><h3 class="code-header in-band">impl<'a> !<a class="trait" href="https://doc.rust-lang.org/1.59.0/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="struct.Metadata.html" title="struct tracing_core::Metadata">Metadata</a><'a></h3></div><div id="impl-Send" class="impl has-srclink"><div class="rightside"></div><a href="#impl-Send" class="anchor"></a><h3 class="code-header in-band">impl<'a> <a class="trait" href="https://doc.rust-lang.org/1.59.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="struct.Metadata.html" title="struct tracing_core::Metadata">Metadata</a><'a></h3></div><div id="impl-Sync" class="impl has-srclink"><div class="rightside"></div><a href="#impl-Sync" class="anchor"></a><h3 class="code-header in-band">impl<'a> <a class="trait" href="https://doc.rust-lang.org/1.59.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="struct.Metadata.html" title="struct tracing_core::Metadata">Metadata</a><'a></h3></div><div id="impl-Unpin" class="impl has-srclink"><div class="rightside"></div><a href="#impl-Unpin" class="anchor"></a><h3 class="code-header in-band">impl<'a> <a class="trait" href="https://doc.rust-lang.org/1.59.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="struct.Metadata.html" title="struct tracing_core::Metadata">Metadata</a><'a></h3></div><div id="impl-UnwindSafe" class="impl has-srclink"><div class="rightside"></div><a href="#impl-UnwindSafe" class="anchor"></a><h3 class="code-header in-band">impl<'a> !<a class="trait" href="https://doc.rust-lang.org/1.59.0/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="struct" href="struct.Metadata.html" title="struct tracing_core::Metadata">Metadata</a><'a></h3></div></div><h2 id="blanket-implementations" class="small-section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor"></a></h2><div id="blanket-implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><div id="impl-Any" class="impl has-srclink"><div class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.59.0/src/core/any.rs.html#132-136" title="goto source code">[src]</a></div><a href="#impl-Any" class="anchor"></a><h3 class="code-header in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.59.0/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T <span class="where fmt-newline">where<br> T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/1.59.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></h3></div></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><div id="method.type_id" class="method trait-impl has-srclink"><div class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.59.0/src/core/any.rs.html#133" title="goto source code">[src]</a></div><a href="#method.type_id" class="anchor"></a><h4 class="code-header">pub fn <a href="https://doc.rust-lang.org/1.59.0/core/any/trait.Any.html#tymethod.type_id" class="fnname">type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/1.59.0/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></h4></div></summary><div class='docblock'><p>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/1.59.0/core/any/trait.Any.html#tymethod.type_id">Read more</a></p>
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</div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><div id="impl-Borrow%3CT%3E" class="impl has-srclink"><div class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.59.0/src/core/borrow.rs.html#209-214" title="goto source code">[src]</a></div><a href="#impl-Borrow%3CT%3E" class="anchor"></a><h3 class="code-header in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.59.0/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><T> for T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/1.59.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></h3></div></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><div id="method.borrow" class="method trait-impl has-srclink"><div class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.59.0/src/core/borrow.rs.html#211" title="goto source code">[src]</a></div><a href="#method.borrow" class="anchor"></a><h4 class="code-header">pub fn <a href="https://doc.rust-lang.org/1.59.0/core/borrow/trait.Borrow.html#tymethod.borrow" class="fnname">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.59.0/std/primitive.reference.html">&</a>T</h4></div></summary><div class='docblock'><p>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.59.0/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></p>
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</div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><div id="impl-BorrowMut%3CT%3E" class="impl has-srclink"><div class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.59.0/src/core/borrow.rs.html#218-222" title="goto source code">[src]</a></div><a href="#impl-BorrowMut%3CT%3E" class="anchor"></a><h3 class="code-header in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.59.0/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/1.59.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></h3></div></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><div id="method.borrow_mut" class="method trait-impl has-srclink"><div class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.59.0/src/core/borrow.rs.html#219" title="goto source code">[src]</a></div><a href="#method.borrow_mut" class="anchor"></a><h4 class="code-header">pub fn <a href="https://doc.rust-lang.org/1.59.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fnname">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/1.59.0/std/primitive.reference.html">&mut </a>T</h4></div></summary><div class='docblock'><p>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.59.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></p>
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</div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><div id="impl-From%3CT%3E" class="impl has-srclink"><div class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.59.0/src/core/convert/mod.rs.html#550-554" title="goto source code">[src]</a></div><a href="#impl-From%3CT%3E" class="anchor"></a><h3 class="code-header in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.59.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for T</h3></div></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><div id="method.from" class="method trait-impl has-srclink"><div class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.59.0/src/core/convert/mod.rs.html#551" title="goto source code">[src]</a></div><a href="#method.from" class="anchor"></a><h4 class="code-header">pub fn <a href="https://doc.rust-lang.org/1.59.0/core/convert/trait.From.html#tymethod.from" class="fnname">from</a>(t: T) -> T</h4></div></summary><div class='docblock'><p>Performs the conversion.</p>
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</div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><div id="impl-Into%3CU%3E" class="impl has-srclink"><div class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.59.0/src/core/convert/mod.rs.html#538-545" title="goto source code">[src]</a></div><a href="#impl-Into%3CU%3E" class="anchor"></a><h3 class="code-header in-band">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.59.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/1.59.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T>, </span></h3></div></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><div id="method.into" class="method trait-impl has-srclink"><div class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.59.0/src/core/convert/mod.rs.html#542" title="goto source code">[src]</a></div><a href="#method.into" class="anchor"></a><h4 class="code-header">pub fn <a href="https://doc.rust-lang.org/1.59.0/core/convert/trait.Into.html#tymethod.into" class="fnname">into</a>(self) -> U</h4></div></summary><div class='docblock'><p>Performs the conversion.</p>
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</div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><div id="impl-TryFrom%3CU%3E" class="impl has-srclink"><div class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.59.0/src/core/convert/mod.rs.html#588-597" title="goto source code">[src]</a></div><a href="#impl-TryFrom%3CU%3E" class="anchor"></a><h3 class="code-header in-band">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.59.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/1.59.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>, </span></h3></div></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><div id="associatedtype.Error-1" class="type trait-impl has-srclink"><a href="#associatedtype.Error-1" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.59.0/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/1.59.0/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></h4></div></summary><div class='docblock'><p>The type returned in the event of a conversion error.</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.try_from" class="method trait-impl has-srclink"><div class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.59.0/src/core/convert/mod.rs.html#594" title="goto source code">[src]</a></div><a href="#method.try_from" class="anchor"></a><h4 class="code-header">pub fn <a href="https://doc.rust-lang.org/1.59.0/core/convert/trait.TryFrom.html#tymethod.try_from" class="fnname">try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/1.59.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/1.59.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.59.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></div></summary><div class='docblock'><p>Performs the conversion.</p>
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</div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><div id="impl-TryInto%3CU%3E" class="impl has-srclink"><div class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.59.0/src/core/convert/mod.rs.html#574-583" title="goto source code">[src]</a></div><a href="#impl-TryInto%3CU%3E" class="anchor"></a><h3 class="code-header in-band">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.59.0/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/1.59.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>, </span></h3></div></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><div id="associatedtype.Error" class="type trait-impl has-srclink"><a href="#associatedtype.Error" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.59.0/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/1.59.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.59.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></h4></div></summary><div class='docblock'><p>The type returned in the event of a conversion error.</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.try_into" class="method trait-impl has-srclink"><div class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.59.0/src/core/convert/mod.rs.html#580" title="goto source code">[src]</a></div><a href="#method.try_into" class="anchor"></a><h4 class="code-header">pub fn <a href="https://doc.rust-lang.org/1.59.0/core/convert/trait.TryInto.html#tymethod.try_into" class="fnname">try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/1.59.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/1.59.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.59.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></div></summary><div class='docblock'><p>Performs the conversion.</p>
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