oxipng/doc/scoped_pool/struct.WaitGroup.html
2016-04-08 13:52:15 -04:00

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<h1 class='fqn'><span class='in-band'>Struct <a href='index.html'>scoped_pool</a>::<wbr><a class='struct' href=''>WaitGroup</a></span><span class='out-of-band'><span id='render-detail'>
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<pre class='rust struct'>pub struct WaitGroup {
// some fields omitted
}</pre><div class='docblock'><p>A synchronization primitive for awaiting a set of actions.</p>
<p>Adding new jobs is done with <code>submit</code>, jobs are completed with <code>complete</code>,
and any thread may wait for all jobs to be <code>complete</code>d with <code>join</code>.</p>
</div><h2 id='methods'>Methods</h2><h3 class='impl'><code>impl <a class='struct' href='../scoped_pool/struct.WaitGroup.html' title='scoped_pool::WaitGroup'>WaitGroup</a></code></h3><div class='impl-items'><h4 id='method.new' class='method'><code>fn <a href='#method.new' class='fnname'>new</a>() -&gt; Self</code></h4>
<div class='docblock'><p>Create a new empty WaitGroup.</p>
</div><h4 id='method.waiting' class='method'><code>fn <a href='#method.waiting' class='fnname'>waiting</a>(&amp;self) -&gt; <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.usize.html'>usize</a></code></h4>
<div class='docblock'><p>How many submitted tasks are waiting for completion.</p>
</div><h4 id='method.submit' class='method'><code>fn <a href='#method.submit' class='fnname'>submit</a>(&amp;self)</code></h4>
<div class='docblock'><p>Submit to this WaitGroup, causing <code>join</code> to wait
for an additional <code>complete</code>.</p>
</div><h4 id='method.complete' class='method'><code>fn <a href='#method.complete' class='fnname'>complete</a>(&amp;self)</code></h4>
<div class='docblock'><p>Complete a previous <code>submit</code>.</p>
</div><h4 id='method.poison' class='method'><code>fn <a href='#method.poison' class='fnname'>poison</a>(&amp;self)</code></h4>
<div class='docblock'><p>Poison the WaitGroup so all <code>join</code>ing threads panic.</p>
</div><h4 id='method.join' class='method'><code>fn <a href='#method.join' class='fnname'>join</a>(&amp;self)</code></h4>
<div class='docblock'><p>Wait for <code>submit</code>s to this WaitGroup to be <code>complete</code>d.</p>
<p>Submits occuring completely before joins will always be waited on.</p>
<p>Submits occuring concurrently with a <code>join</code> may or may not
be waited for.</p>
<p>Before submitting, <code>join</code> will always return immediately.</p>
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