| <!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 handle to release window capacity to a remote stream."><meta name="keywords" content="rust, rustlang, rust-lang, FlowControl"><title>FlowControl in h2 - 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" 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class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><h2></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../h2/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><h2 class="location"><a href="#">FlowControl</a></h2><div class="sidebar-elems"><section><h3><a href="#implementations">Methods</a></h3><ul class="block"><li><a href="#method.available_capacity">available_capacity</a></li><li><a href="#method.release_capacity">release_capacity</a></li><li><a href="#method.stream_id">stream_id</a></li><li><a href="#method.used_capacity">used_capacity</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block"><li><a href="#impl-Clone-for-FlowControl">Clone</a></li><li><a href="#impl-Debug-for-FlowControl">Debug</a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block"><li><a href="#impl-RefUnwindSafe-for-FlowControl">RefUnwindSafe</a></li><li><a href="#impl-Send-for-FlowControl">Send</a></li><li><a href="#impl-Sync-for-FlowControl">Sync</a></li><li><a href="#impl-Unpin-for-FlowControl">Unpin</a></li><li><a href="#impl-UnwindSafe-for-FlowControl">UnwindSafe</a></li></ul><h3><a href="#blanket-implementations">Blanket Implementations</a></h3><ul class="block"><li><a href="#impl-Any-for-FlowControl">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-FlowControl">Borrow<T></a></li><li><a href="#impl-BorrowMut%3CT%3E-for-FlowControl">BorrowMut<T></a></li><li><a href="#impl-From%3CT%3E-for-FlowControl">From<T></a></li><li><a href="#impl-Instrument-for-FlowControl">Instrument</a></li><li><a href="#impl-Into%3CU%3E-for-FlowControl">Into<U></a></li><li><a href="#impl-ToOwned-for-FlowControl">ToOwned</a></li><li><a href="#impl-TryFrom%3CU%3E-for-FlowControl">TryFrom<U></a></li><li><a href="#impl-TryInto%3CU%3E-for-FlowControl">TryInto<U></a></li><li><a href="#impl-WithSubscriber-for-FlowControl">WithSubscriber</a></li></ul></section><h2><a href="index.html">In h2</a></h2></div></nav><main><div class="width-limiter"><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn">Struct <a href="index.html">h2</a>::<wbr><a class="struct" href="#">FlowControl</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></h1><span class="out-of-band"><a class="srclink" href="../src/h2/share.rs.html#195-197">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span></div><div class="item-decl"><pre class="rust struct"><code>pub struct FlowControl { /* private fields */ }</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>A handle to release window capacity to a remote stream.</p> |
| <p>This type allows the caller to manage inbound data <a href="../index.html#flow-control">flow control</a>. The |
| caller is expected to call <a href="struct.FlowControl.html#method.release_capacity"><code>release_capacity</code></a> after dropping data frames.</p> |
| <h2 id="overview"><a href="#overview">Overview</a></h2> |
| <p>Each stream has a window size. This window size is the maximum amount of |
| inbound data that can be in-flight. In-flight data is defined as data that |
| has been received, but not yet released.</p> |
| <p>When a stream is created, the window size is set to the connection’s initial |
| window size value. When a data frame is received, the window size is then |
| decremented by size of the data frame before the data is provided to the |
| caller. As the caller finishes using the data, <a href="struct.FlowControl.html#method.release_capacity"><code>release_capacity</code></a> must be |
| called. This will then increment the window size again, allowing the peer to |
| send more data.</p> |
| <p>There is also a connection level window as well as the stream level window. |
| Received data counts against the connection level window as well and calls |
| to <a href="struct.FlowControl.html#method.release_capacity"><code>release_capacity</code></a> will also increment the connection level window.</p> |
| <h2 id="sending-window_update-frames"><a href="#sending-window_update-frames">Sending <code>WINDOW_UPDATE</code> frames</a></h2> |
| <p><code>WINDOW_UPDATE</code> frames will not be sent out for <strong>every</strong> call to |
| <code>release_capacity</code>, as this would end up slowing down the protocol. Instead, |
| <code>h2</code> waits until the window size is increased to a certain threshold and |
| then sends out a single <code>WINDOW_UPDATE</code> frame representing all the calls to |
| <code>release_capacity</code> since the last <code>WINDOW_UPDATE</code> frame.</p> |
| <p>This essentially batches window updating.</p> |
| <h2 id="scenarios"><a href="#scenarios">Scenarios</a></h2> |
| <p>Following is a basic scenario with an HTTP/2 connection containing a |
| single active stream.</p> |
| <ul> |
| <li>A new stream is activated. The receive window is initialized to 1024 (the |
| value of the initial window size for this connection).</li> |
| <li>A <code>DATA</code> frame is received containing a payload of 600 bytes.</li> |
| <li>The receive window size is reduced to 424 bytes.</li> |
| <li><a href="struct.FlowControl.html#method.release_capacity"><code>release_capacity</code></a> is called with 200.</li> |
| <li>The receive window size is now 624 bytes. The peer may send no more than |
| this.</li> |
| <li>A <code>DATA</code> frame is received with a payload of 624 bytes.</li> |
| <li>The window size is now 0 bytes. The peer may not send any more data.</li> |
| <li><a href="struct.FlowControl.html#method.release_capacity"><code>release_capacity</code></a> is called with 1024.</li> |
| <li>The receive window size is now 1024 bytes. The peer may now send more |
| data.</li> |
| </ul> |
| </div></details><h2 id="implementations" class="small-section-header">Implementations<a href="#implementations" class="anchor"></a></h2><div id="implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-FlowControl" class="impl has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#493-540">source</a><a href="#impl-FlowControl" class="anchor"></a><h3 class="code-header">impl <a class="struct" href="struct.FlowControl.html" title="struct h2::FlowControl">FlowControl</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.stream_id" class="method has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#500-502">source</a><h4 class="code-header">pub fn <a href="#method.stream_id" class="fnname">stream_id</a>(&self) -> <a class="struct" href="struct.StreamId.html" title="struct h2::StreamId">StreamId</a></h4></section></summary><div class="docblock"><p>Returns the stream ID of the stream whose capacity will |
| be released by this <code>FlowControl</code>.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.available_capacity" class="method has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#505-507">source</a><h4 class="code-header">pub fn <a href="#method.available_capacity" class="fnname">available_capacity</a>(&self) -> isize</h4></section></summary><div class="docblock"><p>Get the current available capacity of data this stream <em>could</em> receive.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.used_capacity" class="method has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#512-514">source</a><h4 class="code-header">pub fn <a href="#method.used_capacity" class="fnname">used_capacity</a>(&self) -> usize</h4></section></summary><div class="docblock"><p>Get the currently <em>used</em> capacity for this stream.</p> |
| <p>This is the amount of bytes that can be released back to the remote.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.release_capacity" class="method has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#532-539">source</a><h4 class="code-header">pub fn <a href="#method.release_capacity" class="fnname">release_capacity</a>(&mut self, sz: usize) -> Result<(), <a class="struct" href="struct.Error.html" title="struct h2::Error">Error</a>></h4></section></summary><div class="docblock"><p>Release window capacity back to remote stream.</p> |
| <p>This releases capacity back to the stream level and the connection level |
| windows. Both window sizes will be increased by <code>sz</code>.</p> |
| <p>See <a href="#">struct level</a> documentation for more details.</p> |
| <h5 id="errors"><a href="#errors">Errors</a></h5> |
| <p>This function errors if increasing the receive window size by <code>sz</code> would |
| result in a window size greater than the target window size. In other |
| words, the caller cannot release more capacity than data has been |
| received. If 1024 bytes of data have been received, at most 1024 bytes |
| can be released.</p> |
| </div></details></div></details></div><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><section id="impl-Clone-for-FlowControl" class="impl has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#194">source</a><a href="#impl-Clone-for-FlowControl" class="anchor"></a><h3 class="code-header">impl Clone for <a class="struct" href="struct.FlowControl.html" title="struct h2::FlowControl">FlowControl</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.clone" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#194">source</a><a href="#method.clone" class="anchor"></a><h4 class="code-header">fn <a class="fnname">clone</a>(&self) -> <a class="struct" href="struct.FlowControl.html" title="struct h2::FlowControl">FlowControl</a></h4></section></summary><div class='docblock'>Returns a copy of the value. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.clone_from" class="method trait-impl has-srclink"><span class="since rightside" title="Stable since Rust version 1.0.0">1.0.0</span><a href="#method.clone_from" class="anchor"></a><h4 class="code-header">const fn <a class="fnname">clone_from</a>(&mut self, source: &Self)</h4></section></summary><div class='docblock'>Performs copy-assignment from <code>source</code>. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Debug-for-FlowControl" class="impl has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#194">source</a><a href="#impl-Debug-for-FlowControl" class="anchor"></a><h3 class="code-header">impl Debug for <a class="struct" href="struct.FlowControl.html" title="struct h2::FlowControl">FlowControl</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#194">source</a><a href="#method.fmt" class="anchor"></a><h4 class="code-header">fn <a class="fnname">fmt</a>(&self, f: &mut Formatter<'_>) -> Result</h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a>Read more</a></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"><section id="impl-RefUnwindSafe-for-FlowControl" class="impl has-srclink"><a href="#impl-RefUnwindSafe-for-FlowControl" class="anchor"></a><h3 class="code-header">impl RefUnwindSafe for <a class="struct" href="struct.FlowControl.html" title="struct h2::FlowControl">FlowControl</a></h3></section><section id="impl-Send-for-FlowControl" class="impl has-srclink"><a href="#impl-Send-for-FlowControl" class="anchor"></a><h3 class="code-header">impl Send for <a class="struct" href="struct.FlowControl.html" title="struct h2::FlowControl">FlowControl</a></h3></section><section id="impl-Sync-for-FlowControl" class="impl has-srclink"><a href="#impl-Sync-for-FlowControl" class="anchor"></a><h3 class="code-header">impl Sync for <a class="struct" href="struct.FlowControl.html" title="struct h2::FlowControl">FlowControl</a></h3></section><section id="impl-Unpin-for-FlowControl" class="impl has-srclink"><a href="#impl-Unpin-for-FlowControl" class="anchor"></a><h3 class="code-header">impl Unpin for <a class="struct" href="struct.FlowControl.html" title="struct h2::FlowControl">FlowControl</a></h3></section><section id="impl-UnwindSafe-for-FlowControl" class="impl has-srclink"><a href="#impl-UnwindSafe-for-FlowControl" class="anchor"></a><h3 class="code-header">impl UnwindSafe for <a class="struct" href="struct.FlowControl.html" title="struct h2::FlowControl">FlowControl</a></h3></section></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"><summary><section id="impl-Any-for-FlowControl" class="impl has-srclink"><a href="#impl-Any-for-FlowControl" class="anchor"></a><h3 class="code-header">impl<T> Any for T<span class="where fmt-newline">where<br> T: 'static + ?Sized,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.type_id" class="method trait-impl has-srclink"><a href="#method.type_id" class="anchor"></a><h4 class="code-header">fn <a class="fnname">type_id</a>(&self) -> TypeId</h4></section></summary><div class='docblock'>Gets the <code>TypeId</code> of <code>self</code>. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E-for-FlowControl" class="impl has-srclink"><a href="#impl-Borrow%3CT%3E-for-FlowControl" class="anchor"></a><h3 class="code-header">impl<T> Borrow<T> for T<span class="where fmt-newline">where<br> T: ?Sized,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.borrow" class="method trait-impl has-srclink"><span class="since rightside" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/91522" title="Tracking issue for const_borrow">unstable</a></span><a href="#method.borrow" class="anchor"></a><h4 class="code-header">fn <a class="fnname">borrow</a>(&self) -> &T</h4></section></summary><div class='docblock'>Immutably borrows from an owned value. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E-for-FlowControl" class="impl has-srclink"><a href="#impl-BorrowMut%3CT%3E-for-FlowControl" class="anchor"></a><h3 class="code-header">impl<T> BorrowMut<T> for T<span class="where fmt-newline">where<br> T: ?Sized,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.borrow_mut" class="method trait-impl has-srclink"><span class="since rightside" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/91522" title="Tracking issue for const_borrow">unstable</a></span><a href="#method.borrow_mut" class="anchor"></a><h4 class="code-header">fn <a class="fnname">borrow_mut</a>(&mut self) -> &mut T</h4></section></summary><div class='docblock'>Mutably borrows from an owned value. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-From%3CT%3E-for-FlowControl" class="impl has-srclink"><a href="#impl-From%3CT%3E-for-FlowControl" class="anchor"></a><h3 class="code-header">impl<T> From<T> for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from" class="method trait-impl has-srclink"><span class="since rightside" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span><a href="#method.from" class="anchor"></a><h4 class="code-header">fn <a class="fnname">from</a>(t: T) -> T</h4></section></summary><div class="docblock"><p>Returns the argument unchanged.</p> |
| </div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Instrument-for-FlowControl" class="impl has-srclink"><a class="srclink rightside" href="../src/tracing/instrument.rs.html#276">source</a><a href="#impl-Instrument-for-FlowControl" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="../tracing/instrument/trait.Instrument.html" title="trait tracing::instrument::Instrument">Instrument</a> for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.instrument" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/tracing/instrument.rs.html#82">source</a><a href="#method.instrument" class="anchor"></a><h4 class="code-header">fn <a href="../tracing/instrument/trait.Instrument.html#method.instrument" class="fnname">instrument</a>(self, span: <a class="struct" href="../tracing/span/struct.Span.html" title="struct tracing::span::Span">Span</a>) -> <a class="struct" href="../tracing/instrument/struct.Instrumented.html" title="struct tracing::instrument::Instrumented">Instrumented</a><Self></h4></section></summary><div class='docblock'>Instruments this type with the provided <a href="../tracing/span/struct.Span.html" title="Span"><code>Span</code></a>, returning an |
| <code>Instrumented</code> wrapper. <a href="../tracing/instrument/trait.Instrument.html#method.instrument">Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.in_current_span" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/tracing/instrument.rs.html#121">source</a><a href="#method.in_current_span" class="anchor"></a><h4 class="code-header">fn <a href="../tracing/instrument/trait.Instrument.html#method.in_current_span" class="fnname">in_current_span</a>(self) -> <a class="struct" href="../tracing/instrument/struct.Instrumented.html" title="struct tracing::instrument::Instrumented">Instrumented</a><Self></h4></section></summary><div class='docblock'>Instruments this type with the <a href="../tracing/span/struct.Span.html#method.current">current</a> <a href="../tracing/span/struct.Span.html"><code>Span</code></a>, returning an |
| <code>Instrumented</code> wrapper. <a href="../tracing/instrument/trait.Instrument.html#method.in_current_span">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E-for-FlowControl" class="impl has-srclink"><a href="#impl-Into%3CU%3E-for-FlowControl" class="anchor"></a><h3 class="code-header">impl<T, U> Into<U> for T<span class="where fmt-newline">where<br> U: From<T>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.into" class="method trait-impl has-srclink"><span class="since rightside" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span><a href="#method.into" class="anchor"></a><h4 class="code-header">fn <a class="fnname">into</a>(self) -> U</h4></section></summary><div class="docblock"><p>Calls <code>U::from(self)</code>.</p> |
| <p>That is, this conversion is whatever the implementation of |
| <code>[From]<T> for U</code> chooses to do.</p> |
| </div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToOwned-for-FlowControl" class="impl has-srclink"><a href="#impl-ToOwned-for-FlowControl" class="anchor"></a><h3 class="code-header">impl<T> ToOwned for T<span class="where fmt-newline">where<br> T: Clone,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Owned" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Owned" class="anchor"></a><h4 class="code-header">type <a class="associatedtype">Owned</a> = T</h4></section></summary><div class='docblock'>The resulting type after obtaining ownership.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_owned" class="method trait-impl has-srclink"><a href="#method.to_owned" class="anchor"></a><h4 class="code-header">fn <a class="fnname">to_owned</a>(&self) -> T</h4></section></summary><div class='docblock'>Creates owned data from borrowed data, usually by cloning. <a>Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.clone_into" class="method trait-impl has-srclink"><a href="#method.clone_into" class="anchor"></a><h4 class="code-header">fn <a class="fnname">clone_into</a>(&self, target: &mut T)</h4></section></summary><div class='docblock'>Uses borrowed data to replace owned data, usually by cloning. <a>Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-FlowControl" class="impl has-srclink"><a href="#impl-TryFrom%3CU%3E-for-FlowControl" class="anchor"></a><h3 class="code-header">impl<T, U> TryFrom<U> for T<span class="where fmt-newline">where<br> U: Into<T>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Error-1" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Error-1" class="anchor"></a><h4 class="code-header">type <a class="associatedtype">Error</a> = Infallible</h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.try_from" class="method trait-impl has-srclink"><span class="since rightside" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span><a href="#method.try_from" class="anchor"></a><h4 class="code-header">fn <a class="fnname">try_from</a>(value: U) -> Result<T, <T as TryFrom<U>>::Error></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E-for-FlowControl" class="impl has-srclink"><a href="#impl-TryInto%3CU%3E-for-FlowControl" class="anchor"></a><h3 class="code-header">impl<T, U> TryInto<U> for T<span class="where fmt-newline">where<br> U: TryFrom<T>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Error" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Error" class="anchor"></a><h4 class="code-header">type <a class="associatedtype">Error</a> = <U as TryFrom<T>>::Error</h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.try_into" class="method trait-impl has-srclink"><span class="since rightside" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span><a href="#method.try_into" class="anchor"></a><h4 class="code-header">fn <a class="fnname">try_into</a>(self) -> Result<U, <U as TryFrom<T>>::Error></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-WithSubscriber-for-FlowControl" class="impl has-srclink"><a class="srclink rightside" href="../src/tracing/instrument.rs.html#334">source</a><a href="#impl-WithSubscriber-for-FlowControl" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="../tracing/instrument/trait.WithSubscriber.html" title="trait tracing::instrument::WithSubscriber">WithSubscriber</a> for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.with_subscriber" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/tracing/instrument.rs.html#169-171">source</a><a href="#method.with_subscriber" class="anchor"></a><h4 class="code-header">fn <a href="../tracing/instrument/trait.WithSubscriber.html#method.with_subscriber" class="fnname">with_subscriber</a><S>(self, subscriber: S) -> <a class="struct" href="../tracing/instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch">WithDispatch</a><Self><span class="where fmt-newline">where<br> S: Into<<a class="struct" href="../tracing_core/dispatcher/struct.Dispatch.html" title="struct tracing_core::dispatcher::Dispatch">Dispatch</a>>,</span></h4></section></summary><div class='docblock'>Attaches the provided <a href="../tracing_core/subscriber/trait.Subscriber.html"><code>Subscriber</code></a> to this type, returning a |
| <a href="../tracing/instrument/struct.WithDispatch.html" title="WithDispatch"><code>WithDispatch</code></a> wrapper. <a href="../tracing/instrument/trait.WithSubscriber.html#method.with_subscriber">Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.with_current_subscriber" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/tracing/instrument.rs.html#221">source</a><a href="#method.with_current_subscriber" class="anchor"></a><h4 class="code-header">fn <a href="../tracing/instrument/trait.WithSubscriber.html#method.with_current_subscriber" class="fnname">with_current_subscriber</a>(self) -> <a class="struct" href="../tracing/instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch">WithDispatch</a><Self></h4></section></summary><div class='docblock'>Attaches the current <a href="../tracing/dispatcher/index.html#setting-the-default-subscriber">default</a> <a href="../tracing_core/subscriber/trait.Subscriber.html"><code>Subscriber</code></a> to this type, returning a |
| <a href="../tracing/instrument/struct.WithDispatch.html" title="WithDispatch"><code>WithDispatch</code></a> wrapper. <a href="../tracing/instrument/trait.WithSubscriber.html#method.with_current_subscriber">Read more</a></div></details></div></details></div></section></div></main><div id="rustdoc-vars" data-root-path="../" data-current-crate="h2" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
