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<title>tokio_timer::Error - Rust</title>
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<div class="sidebar-menu">☰</div>
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<p class='location'>Struct Error</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.shutdown">shutdown</a><a href="#method.is_shutdown">is_shutdown</a><a href="#method.at_capacity">at_capacity</a><a href="#method.is_at_capacity">is_at_capacity</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Debug">Debug</a><a href="#impl-Error">Error</a><a href="#impl-Display">Display</a></div></div><p class='location'><a href='index.html'>tokio_timer</a></p><script>window.sidebarCurrent = {name: 'Error', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
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<h1 class='fqn'><span class='in-band'>Struct <a href='index.html'>tokio_timer</a>::<wbr><a class="struct" href=''>Error</a></span><span class='out-of-band'><span id='render-detail'>
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<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
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[<span class='inner'>−</span>]
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</span><a class='srclink' href='../src/tokio_timer/error.rs.html#26' title='goto source code'>[src]</a></span></h1>
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<pre class='rust struct'>pub struct Error(_);</pre><div class='docblock'><p>Errors encountered by the timer implementation.</p>
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<p>Currently, there are two different errors that can occur:</p>
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<ul>
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<li>
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<p><code>shutdown</code> occurs when a timer operation is attempted, but the timer
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instance has been dropped. In this case, the operation will never be able
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to complete and the <code>shutdown</code> error is returned. This is a permanent
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error, i.e., once this error is observed, timer operations will never
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succeed in the future.</p>
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</li>
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<li>
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<p><code>at_capacity</code> occurs when a timer operation is attempted, but the timer
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instance is currently handling its maximum number of outstanding delays.
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In this case, the operation is not able to be performed at the current
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moment, and <code>at_capacity</code> is returned. This is a transient error, i.e., at
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some point in the future, if the operation is attempted again, it might
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succeed. Callers that observe this error should attempt to <a href="https://en.wikipedia.org/wiki/Load_Shedding">shed load</a>. One
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way to do this would be dropping the future that issued the timer operation.</p>
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</li>
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</ul>
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<h2 id='methods' class='small-section-header'>
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Methods<a href='#methods' class='anchor'></a>
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</h2>
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<h3 id='impl' class='impl'><span class='in-band'><code>impl <a class="struct" href="../tokio_timer/struct.Error.html" title="struct tokio_timer::Error">Error</a></code><a href='#impl' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_timer/error.rs.html#34-60' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.shutdown' class="method"><span id='shutdown.v' class='invisible'><code>pub fn <a href='#method.shutdown' class='fnname'>shutdown</a>() -> <a class="struct" href="../tokio_timer/struct.Error.html" title="struct tokio_timer::Error">Error</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_timer/error.rs.html#36-38' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Create an error representing a shutdown timer.</p>
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</div><h4 id='method.is_shutdown' class="method"><span id='is_shutdown.v' class='invisible'><code>pub fn <a href='#method.is_shutdown' class='fnname'>is_shutdown</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_timer/error.rs.html#41-46' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Returns <code>true</code> if the error was caused by the timer being shutdown.</p>
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</div><h4 id='method.at_capacity' class="method"><span id='at_capacity.v' class='invisible'><code>pub fn <a href='#method.at_capacity' class='fnname'>at_capacity</a>() -> <a class="struct" href="../tokio_timer/struct.Error.html" title="struct tokio_timer::Error">Error</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_timer/error.rs.html#49-51' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Create an error representing a timer at capacity.</p>
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</div><h4 id='method.is_at_capacity' class="method"><span id='is_at_capacity.v' class='invisible'><code>pub fn <a href='#method.is_at_capacity' class='fnname'>is_at_capacity</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_timer/error.rs.html#54-59' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Returns <code>true</code> if the error was caused by the timer being at capacity.</p>
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</div></div>
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<h2 id='implementations' class='small-section-header'>
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Trait Implementations<a href='#implementations' class='anchor'></a>
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</h2>
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<h3 id='impl-Debug' class='impl'><span class='in-band'><code>impl <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="../tokio_timer/struct.Error.html" title="struct tokio_timer::Error">Error</a></code><a href='#impl-Debug' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_timer/error.rs.html#25' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.fmt' class="method"><span id='fmt.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&self, __arg_0: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -> <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_timer/error.rs.html#25' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><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>
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</div></div><h3 id='impl-Error' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/std/error/trait.Error.html" title="trait std::error::Error">Error</a> for <a class="struct" href="../tokio_timer/struct.Error.html" title="struct tokio_timer::Error">Error</a></code><a href='#impl-Error' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_timer/error.rs.html#62-71' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.description' class="method"><span id='description.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/std/error/trait.Error.html#tymethod.description' class='fnname'>description</a>(&self) -> &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_timer/error.rs.html#63-70' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>A short description of the error. <a href="https://doc.rust-lang.org/nightly/std/error/trait.Error.html#tymethod.description">Read more</a></p>
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</div><h4 id='method.cause' class="method"><span id='cause.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/std/error/trait.Error.html#method.cause' class='fnname'>cause</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&<a class="trait" href="https://doc.rust-lang.org/nightly/std/error/trait.Error.html" title="trait std::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/error.rs.html#154' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>The lower-level cause of this error, if any. <a href="https://doc.rust-lang.org/nightly/std/error/trait.Error.html#method.cause">Read more</a></p>
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</div></div><h3 id='impl-Display' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> for <a class="struct" href="../tokio_timer/struct.Error.html" title="struct tokio_timer::Error">Error</a></code><a href='#impl-Display' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_timer/error.rs.html#73-78' title='goto source code'>[src]</a></span></h3>
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<div class='docblock'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html#tymethod.fmt">Read more</a></p>
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