mentat/tokio_executor/fn.enter.html
2018-08-22 17:04:13 +00:00

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<h1 class='fqn'><span class='in-band'>Function <a href='index.html'>tokio_executor</a>::<wbr><a class="fn" href=''>enter</a></span><span class='out-of-band'><span id='render-detail'>
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<pre class='rust fn'>pub fn enter() -&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="struct" href="../tokio_executor/struct.Enter.html" title="struct tokio_executor::Enter">Enter</a>, <a class="struct" href="../tokio_executor/struct.EnterError.html" title="struct tokio_executor::EnterError">EnterError</a>&gt;</pre><div class='docblock'><p>Marks the current thread as being within the dynamic extent of an
executor.</p>
<p>Executor implementations should call this function before blocking the
thread. If <code>None</code> is returned, the executor should fail by panicking or
taking some other action without blocking the current thread. This prevents
deadlocks due to multiple executors competing for the same thread.</p>
<h1 id="error" class="section-header"><a href="#error">Error</a></h1>
<p>Returns an error if the current thread is already marked</p>
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