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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 `Spawn` struct in crate `futures`."><meta name="keywords" content="rust, rustlang, rust-lang, Spawn"><title>futures::executor::Spawn - 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="../../dark.css"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script src="../../storage.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="shortcut icon" href="../../favicon.ico"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><body class="rustdoc struct"><!--[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='../../futures/index.html'><img src='../../rust-logo.png' alt='logo' width='100'></a><p class='location'>Struct Spawn</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.close_notify">close_notify</a><a href="#method.get_mut">get_mut</a><a href="#method.get_ref">get_ref</a><a href="#method.into_inner">into_inner</a><a href="#method.poll_flush_notify">poll_flush_notify</a><a href="#method.poll_fn_notify">poll_fn_notify</a><a href="#method.poll_future_notify">poll_future_notify</a><a href="#method.poll_stream_notify">poll_stream_notify</a><a href="#method.start_send_notify">start_send_notify</a><a href="#method.wait_close">wait_close</a><a href="#method.wait_flush">wait_flush</a><a href="#method.wait_future">wait_future</a><a href="#method.wait_send">wait_send</a><a href="#method.wait_stream">wait_stream</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Debug">Debug</a></div><a class="sidebar-title" href="#synthetic-implementations">Auto Trait Implementations</a><div class="sidebar-links"><a href="#impl-Send">Send</a><a href="#impl-Sync">!Sync</a></div><a class="sidebar-title" href="#blanket-implementations">Blanket Implementations</a><div class="sidebar-links"><a href="#impl-Any">Any</a><a href="#impl-Borrow">Borrow</a><a href="#impl-BorrowMut">BorrowMut</a><a href="#impl-From">From</a><a href="#impl-Into">Into</a><a href="#impl-TryFrom">TryFrom</a><a href="#impl-TryInto">TryInto</a></div></div><p class='location'><a href='../index.html'>futures</a>::<wbr><a href='index.html'>executor</a></p><script>window.sidebarCurrent = {name: 'Spawn', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form js-only"><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><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/futures/task_impl/mod.rs.html#241-245' title='goto source code'>[src]</a></span><span class='in-band'>Struct <a href='../index.html'>futures</a>::<wbr><a href='index.html'>executor</a>::<wbr><a class="struct" href=''>Spawn</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class='rust struct'>pub struct Spawn&lt;T:&nbsp;?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>&gt; { /* fields omitted */ }</pre></div><div class='docblock'><p>Representation of a spawned future/stream.</p>
<p>This object is returned by the <code>spawn</code> function in this module. This
represents a &quot;fused task and future&quot;, storing all necessary pieces of a task
and owning the top-level future that's being driven as well.</p>
<p>A <code>Spawn</code> can be poll'd for completion or execution of the current thread
can be blocked indefinitely until a notification arrives. This can be used
with either futures or streams, with different methods being available on
<code>Spawn</code> depending which is used.</p>
</div><h2 id='methods' class='small-section-header'>Methods<a href='#methods' class='anchor'></a></h2><h3 id='impl' class='impl'><code class='in-band'>impl&lt;F:&nbsp;<a class="trait" href="../../futures/future/trait.Future.html" title="trait futures::future::Future">Future</a>&gt; <a class="struct" href="../../futures/executor/struct.Spawn.html" title="struct futures::executor::Spawn">Spawn</a>&lt;F&gt;</code><a href='#impl' class='anchor'></a><a class='srclink' href='../../src/futures/task_impl/std/mod.rs.html#218-263' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.wait_future' class="method"><code id='wait_future.v'>pub fn <a href='#method.wait_future' class='fnname'>wait_future</a>(&amp;mut self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;F::<a class="type" href="../../futures/future/trait.Future.html#associatedtype.Item" title="type futures::future::Future::Item">Item</a>, F::<a class="type" href="../../futures/future/trait.Future.html#associatedtype.Error" title="type futures::future::Future::Error">Error</a>&gt;</code><a class='srclink' href='../../src/futures/task_impl/std/mod.rs.html#232-242' title='goto source code'>[src]</a></h4><div class='docblock'><p>Waits for the internal future to complete, blocking this thread's
execution until it does.</p>
<p>This function will call <code>poll_future</code> in a loop, waiting for the future
to complete. When a future cannot make progress it will use
<code>thread::park</code> to block the current thread.</p>
</div></div><h3 id='impl-1' class='impl'><code class='in-band'>impl&lt;S:&nbsp;<a class="trait" href="../../futures/stream/trait.Stream.html" title="trait futures::stream::Stream">Stream</a>&gt; <a class="struct" href="../../futures/executor/struct.Spawn.html" title="struct futures::executor::Spawn">Spawn</a>&lt;S&gt;</code><a href='#impl-1' class='anchor'></a><a class='srclink' href='../../src/futures/task_impl/std/mod.rs.html#265-289' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.wait_stream' class="method"><code id='wait_stream.v'>pub fn <a href='#method.wait_stream' class='fnname'>wait_stream</a>(&amp;mut self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;S::<a class="type" href="../../futures/stream/trait.Stream.html#associatedtype.Item" title="type futures::stream::Stream::Item">Item</a>, S::<a class="type" href="../../futures/stream/trait.Stream.html#associatedtype.Error" title="type futures::stream::Stream::Error">Error</a>&gt;&gt;</code><a class='srclink' href='../../src/futures/task_impl/std/mod.rs.html#276-288' title='goto source code'>[src]</a></h4><div class='docblock'><p>Like <code>wait_future</code>, except only waits for the next element to arrive on
the underlying stream.</p>
</div></div><h3 id='impl-2' class='impl'><code class='in-band'>impl&lt;S:&nbsp;<a class="trait" href="../../futures/sink/trait.Sink.html" title="trait futures::sink::Sink">Sink</a>&gt; <a class="struct" href="../../futures/executor/struct.Spawn.html" title="struct futures::executor::Spawn">Spawn</a>&lt;S&gt;</code><a href='#impl-2' class='anchor'></a><a class='srclink' href='../../src/futures/task_impl/std/mod.rs.html#291-363' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.wait_send' class="method"><code id='wait_send.v'>pub fn <a href='#method.wait_send' class='fnname'>wait_send</a>(&amp;mut self, value: S::<a class="type" href="../../futures/sink/trait.Sink.html#associatedtype.SinkItem" title="type futures::sink::Sink::SinkItem">SinkItem</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, S::<a class="type" href="../../futures/sink/trait.Sink.html#associatedtype.SinkError" title="type futures::sink::Sink::SinkError">SinkError</a>&gt;</code><a class='srclink' href='../../src/futures/task_impl/std/mod.rs.html#313-325' title='goto source code'>[src]</a></h4><div class='docblock'><p>Blocks the current thread until it's able to send <code>value</code> on this sink.</p>
<p>This function will send the <code>value</code> on the sink that this task wraps. If
the sink is not ready to send the value yet then the current thread will
be blocked until it's able to send the value.</p>
</div><h4 id='method.wait_flush' class="method"><code id='wait_flush.v'>pub fn <a href='#method.wait_flush' class='fnname'>wait_flush</a>(&amp;mut self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, S::<a class="type" href="../../futures/sink/trait.Sink.html#associatedtype.SinkError" title="type futures::sink::Sink::SinkError">SinkError</a>&gt;</code><a class='srclink' href='../../src/futures/task_impl/std/mod.rs.html#335-345' title='goto source code'>[src]</a></h4><div class='docblock'><p>Blocks the current thread until it's able to flush this sink.</p>
<p>This function will call the underlying sink's <code>poll_complete</code> method
until it returns that it's ready, proxying out errors upwards to the
caller if one occurs.</p>
<p>The thread will be blocked until <code>poll_complete</code> returns that it's
ready.</p>
</div><h4 id='method.wait_close' class="method"><code id='wait_close.v'>pub fn <a href='#method.wait_close' class='fnname'>wait_close</a>(&amp;mut self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, S::<a class="type" href="../../futures/sink/trait.Sink.html#associatedtype.SinkError" title="type futures::sink::Sink::SinkError">SinkError</a>&gt;</code><a class='srclink' href='../../src/futures/task_impl/std/mod.rs.html#352-362' title='goto source code'>[src]</a></h4><div class='docblock'><p>Blocks the current thread until it's able to close this sink.</p>
<p>This function will close the sink that this task wraps. If the sink
is not ready to be close yet, then the current thread will be blocked
until it's closed.</p>
</div></div><h3 id='impl-3' class='impl'><code class='in-band'>impl&lt;T:&nbsp;?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>&gt; <a class="struct" href="../../futures/executor/struct.Spawn.html" title="struct futures::executor::Spawn">Spawn</a>&lt;T&gt;</code><a href='#impl-3' class='anchor'></a><a class='srclink' href='../../src/futures/task_impl/mod.rs.html#265-401' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.get_ref' class="method"><code id='get_ref.v'>pub fn <a href='#method.get_ref' class='fnname'>get_ref</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>T</code><a class='srclink' href='../../src/futures/task_impl/mod.rs.html#267-269' title='goto source code'>[src]</a></h4><div class='docblock'><p>Get a shared reference to the object the Spawn is wrapping.</p>
</div><h4 id='method.get_mut' class="method"><code id='get_mut.v'>pub fn <a href='#method.get_mut' class='fnname'>get_mut</a>(&amp;mut self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>T</code><a class='srclink' href='../../src/futures/task_impl/mod.rs.html#272-274' title='goto source code'>[src]</a></h4><div class='docblock'><p>Get a mutable reference to the object the Spawn is wrapping.</p>
</div><h4 id='method.into_inner' class="method"><code id='into_inner.v'>pub fn <a href='#method.into_inner' class='fnname'>into_inner</a>(self) -&gt; T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a class='srclink' href='../../src/futures/task_impl/mod.rs.html#277-279' title='goto source code'>[src]</a></h4><div class='docblock'><p>Consume the Spawn, returning its inner object</p>
</div><h4 id='method.poll_fn_notify' class="method"><code id='poll_fn_notify.v'>pub fn <a href='#method.poll_fn_notify' class='fnname'>poll_fn_notify</a>&lt;N, F, R&gt;(&amp;mut self, notify: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>N, id: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -&gt; R <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>T) -&gt; R,<br>&nbsp;&nbsp;&nbsp;&nbsp;N: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;<a class="struct" href="../../futures/executor/struct.NotifyHandle.html" title="struct futures::executor::NotifyHandle">NotifyHandle</a>&gt;,&nbsp;</span></code><a class='srclink' href='../../src/futures/task_impl/mod.rs.html#283-292' title='goto source code'>[src]</a></h4><div class='docblock'><p>Calls the provided closure, scheduling notifications to be sent to the
<code>notify</code> argument.</p>
</div><h4 id='method.poll_future_notify' class="method"><code id='poll_future_notify.v'>pub fn <a href='#method.poll_future_notify' class='fnname'>poll_future_notify</a>&lt;N&gt;(<br>&nbsp;&nbsp;&nbsp;&nbsp;&amp;mut self, <br>&nbsp;&nbsp;&nbsp;&nbsp;notify: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>N, <br>&nbsp;&nbsp;&nbsp;&nbsp;id: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a><br>) -&gt; <a class="type" href="../../futures/type.Poll.html" title="type futures::Poll">Poll</a>&lt;T::<a class="type" href="../../futures/future/trait.Future.html#associatedtype.Item" title="type futures::future::Future::Item">Item</a>, T::<a class="type" href="../../futures/future/trait.Future.html#associatedtype.Error" title="type futures::future::Future::Error">Error</a>&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;N: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;<a class="struct" href="../../futures/executor/struct.NotifyHandle.html" title="struct futures::executor::NotifyHandle">NotifyHandle</a>&gt;,<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="../../futures/future/trait.Future.html" title="trait futures::future::Future">Future</a>,&nbsp;</span></code><a class='srclink' href='../../src/futures/task_impl/mod.rs.html#323-330' title='goto source code'>[src]</a></h4><div class='docblock'><p>Polls the internal future, scheduling notifications to be sent to the
<code>notify</code> argument.</p>
<p>This method will poll the internal future, testing if it's completed
yet. The <code>notify</code> argument is used as a sink for notifications sent to
this future. That is, while the future is being polled, any call to
<code>task::current()</code> will return a handle that contains the <code>notify</code>
specified.</p>
<p>If this function returns <code>NotReady</code>, then the <code>notify</code> should have been
scheduled to receive a notification when poll can be called again.
Otherwise if <code>Ready</code> or <code>Err</code> is returned, the <code>Spawn</code> task can be
safely destroyed.</p>
<p>Note that <code>notify</code> itself is passed as a shared reference, and is itself
not required to be a <code>NotifyHandle</code>. The <code>Clone</code> and <code>Into</code> trait bounds
will be used to convert this <code>notify</code> to a <code>NotifyHandle</code> if necessary.
This construction can avoid an unnecessary atomic reference count bump
in some situations.</p>
<h2 id="unsafety-and-id" class="section-header"><a href="#unsafety-and-id">Unsafety and <code>id</code></a></h2>
<p>This function and all other <code>*_notify</code> functions on this type will treat
the <code>id</code> specified very carefully, explicitly calling functions like the
<code>notify</code> argument's <code>clone_id</code> and <code>drop_id</code> functions. It should be
safe to encode a pointer itself into the <code>id</code> specified, such as an
<code>Arc&lt;N&gt;</code> or a <code>Box&lt;N&gt;</code>. The <code>clone_id</code> and <code>drop_id</code> functions are then
intended to be sufficient for the memory management related to that
pointer.</p>
</div><h4 id='method.poll_stream_notify' class="method"><code id='poll_stream_notify.v'>pub fn <a href='#method.poll_stream_notify' class='fnname'>poll_stream_notify</a>&lt;N&gt;(<br>&nbsp;&nbsp;&nbsp;&nbsp;&amp;mut self, <br>&nbsp;&nbsp;&nbsp;&nbsp;notify: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>N, <br>&nbsp;&nbsp;&nbsp;&nbsp;id: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a><br>) -&gt; <a class="type" href="../../futures/type.Poll.html" title="type futures::Poll">Poll</a>&lt;<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;T::<a class="type" href="../../futures/stream/trait.Stream.html#associatedtype.Item" title="type futures::stream::Stream::Item">Item</a>&gt;, T::<a class="type" href="../../futures/stream/trait.Stream.html#associatedtype.Error" title="type futures::stream::Stream::Error">Error</a>&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;N: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;<a class="struct" href="../../futures/executor/struct.NotifyHandle.html" title="struct futures::executor::NotifyHandle">NotifyHandle</a>&gt;,<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="../../futures/stream/trait.Stream.html" title="trait futures::stream::Stream">Stream</a>,&nbsp;</span></code><a class='srclink' href='../../src/futures/task_impl/mod.rs.html#333-341' title='goto source code'>[src]</a></h4><div class='docblock'><p>Like <code>poll_future_notify</code>, except polls the underlying stream.</p>
</div><h4 id='method.start_send_notify' class="method"><code id='start_send_notify.v'>pub fn <a href='#method.start_send_notify' class='fnname'>start_send_notify</a>&lt;N&gt;(<br>&nbsp;&nbsp;&nbsp;&nbsp;&amp;mut self, <br>&nbsp;&nbsp;&nbsp;&nbsp;value: T::<a class="type" href="../../futures/sink/trait.Sink.html#associatedtype.SinkItem" title="type futures::sink::Sink::SinkItem">SinkItem</a>, <br>&nbsp;&nbsp;&nbsp;&nbsp;notify: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>N, <br>&nbsp;&nbsp;&nbsp;&nbsp;id: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a><br>) -&gt; <a class="type" href="../../futures/type.StartSend.html" title="type futures::StartSend">StartSend</a>&lt;T::<a class="type" href="../../futures/sink/trait.Sink.html#associatedtype.SinkItem" title="type futures::sink::Sink::SinkItem">SinkItem</a>, T::<a class="type" href="../../futures/sink/trait.Sink.html#associatedtype.SinkError" title="type futures::sink::Sink::SinkError">SinkError</a>&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;N: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;<a class="struct" href="../../futures/executor/struct.NotifyHandle.html" title="struct futures::executor::NotifyHandle">NotifyHandle</a>&gt;,<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="../../futures/sink/trait.Sink.html" title="trait futures::sink::Sink">Sink</a>,&nbsp;</span></code><a class='srclink' href='../../src/futures/task_impl/mod.rs.html#348-357' title='goto source code'>[src]</a></h4><div class='docblock'><p>Invokes the underlying <code>start_send</code> method with this task in place.</p>
<p>If the underlying operation returns <code>NotReady</code> then the <code>notify</code> value
passed in will receive a notification when the operation is ready to be
attempted again.</p>
</div><h4 id='method.poll_flush_notify' class="method"><code id='poll_flush_notify.v'>pub fn <a href='#method.poll_flush_notify' class='fnname'>poll_flush_notify</a>&lt;N&gt;(<br>&nbsp;&nbsp;&nbsp;&nbsp;&amp;mut self, <br>&nbsp;&nbsp;&nbsp;&nbsp;notify: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>N, <br>&nbsp;&nbsp;&nbsp;&nbsp;id: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a><br>) -&gt; <a class="type" href="../../futures/type.Poll.html" title="type futures::Poll">Poll</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, T::<a class="type" href="../../futures/sink/trait.Sink.html#associatedtype.SinkError" title="type futures::sink::Sink::SinkError">SinkError</a>&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;N: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;<a class="struct" href="../../futures/executor/struct.NotifyHandle.html" title="struct futures::executor::NotifyHandle">NotifyHandle</a>&gt;,<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="../../futures/sink/trait.Sink.html" title="trait futures::sink::Sink">Sink</a>,&nbsp;</span></code><a class='srclink' href='../../src/futures/task_impl/mod.rs.html#364-372' title='goto source code'>[src]</a></h4><div class='docblock'><p>Invokes the underlying <code>poll_complete</code> method with this task in place.</p>
<p>If the underlying operation returns <code>NotReady</code> then the <code>notify</code> value
passed in will receive a notification when the operation is ready to be
attempted again.</p>
</div><h4 id='method.close_notify' class="method"><code id='close_notify.v'>pub fn <a href='#method.close_notify' class='fnname'>close_notify</a>&lt;N&gt;(<br>&nbsp;&nbsp;&nbsp;&nbsp;&amp;mut self, <br>&nbsp;&nbsp;&nbsp;&nbsp;notify: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>N, <br>&nbsp;&nbsp;&nbsp;&nbsp;id: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a><br>) -&gt; <a class="type" href="../../futures/type.Poll.html" title="type futures::Poll">Poll</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, T::<a class="type" href="../../futures/sink/trait.Sink.html#associatedtype.SinkError" title="type futures::sink::Sink::SinkError">SinkError</a>&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;N: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;<a class="struct" href="../../futures/executor/struct.NotifyHandle.html" title="struct futures::executor::NotifyHandle">NotifyHandle</a>&gt;,<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="../../futures/sink/trait.Sink.html" title="trait futures::sink::Sink">Sink</a>,&nbsp;</span></code><a class='srclink' href='../../src/futures/task_impl/mod.rs.html#379-387' title='goto source code'>[src]</a></h4><div class='docblock'><p>Invokes the underlying <code>close</code> method with this task in place.</p>
<p>If the underlying operation returns <code>NotReady</code> then the <code>notify</code> value
passed in will receive a notification when the operation is ready to be
attempted again.</p>
</div></div><h2 id='implementations' class='small-section-header'>Trait Implementations<a href='#implementations' class='anchor'></a></h2><div id='implementations-list'><h3 id='impl-Debug' class='impl'><code class='in-band'>impl&lt;T:&nbsp;<a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="../../futures/executor/struct.Spawn.html" title="struct futures::executor::Spawn">Spawn</a>&lt;T&gt;</code><a href='#impl-Debug' class='anchor'></a><a class='srclink' href='../../src/futures/task_impl/mod.rs.html#403-409' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.fmt' class="method hidden"><code id='fmt.v'>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code><a class='srclink' href='../../src/futures/task_impl/mod.rs.html#404-408' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
</div></div></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'><h3 id='impl-Send' class='impl'><code class='in-band'>impl&lt;T:&nbsp;?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="../../futures/executor/struct.Spawn.html" title="struct futures::executor::Spawn">Spawn</a>&lt;T&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>,&nbsp;</span></code><a href='#impl-Send' class='anchor'></a></h3><div class='impl-items'></div><h3 id='impl-Sync' class='impl'><code class='in-band'>impl&lt;T&gt; !<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="../../futures/executor/struct.Spawn.html" title="struct futures::executor::Spawn">Spawn</a>&lt;T&gt;</code><a href='#impl-Sync' class='anchor'></a></h3><div class='impl-items'></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'><h3 id='impl-From' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a> for T</code><a href='#impl-From' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#546-548' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from' class="method hidden"><code id='from.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(t: T) -&gt; T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#547' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-TryFrom' class='impl'><code class='in-band'>impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a> for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;T&gt;,&nbsp;</span></code><a href='#impl-TryFrom' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#565-571' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Error' class="type"><code id='Error.t'>type <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error' class="type">Error</a> = <a class="enum" href="https://doc.rust-lang.org/nightly/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
</div><h4 id='method.try_from' class="method hidden"><code id='try_from.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#tymethod.try_from' class='fnname'>try_from</a>(value: U) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;T, &lt;T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;U&gt;&gt;::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>&gt;</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#568-570' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-TryInto' class='impl'><code class='in-band'>impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a> for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;,&nbsp;</span></code><a href='#impl-TryInto' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#553-560' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Error-1' class="type"><code id='Error.t-1'>type <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error' class="type">Error</a> = &lt;U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;&gt;::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
</div><h4 id='method.try_into' class="method hidden"><code id='try_into.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#tymethod.try_into' class='fnname'>try_into</a>(self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;U, &lt;U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;&gt;::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>&gt;</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#557-559' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-Into' class='impl'><code class='in-band'>impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a> for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt;,&nbsp;</span></code><a href='#impl-Into' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#537-542' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.into' class="method hidden"><code id='into.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.Into.html#tymethod.into' class='fnname'>into</a>(self) -&gt; U</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#539-541' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-Borrow' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a> for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a href='#impl-Borrow' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#213-215' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.borrow' class="method hidden"><code id='borrow.v'>fn <a href='https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow' class='fnname'>borrow</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#214' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></p>
</div></div><h3 id='impl-BorrowMut' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a> for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a href='#impl-BorrowMut' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#218-220' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.borrow_mut' class="method hidden"><code id='borrow_mut.v'>fn <a href='https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut' class='fnname'>borrow_mut</a>(&amp;mut self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#219' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></p>
</div></div><h3 id='impl-Any' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a href='#impl-Any' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/any.rs.html#100-102' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.type_id' class="method hidden"><code id='type_id.v'>fn <a href='https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id' class='fnname'>type_id</a>(&amp;self) -&gt; <a class="struct" href="https://doc.rust-lang.org/nightly/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/any.rs.html#101' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id">Read more</a></p>
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