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<title>mxnet: dmlc::ConcurrentBlockingQueue&lt; T, type &gt; Class Template Reference</title>
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<li class="navelem"><a class="el" href="namespacedmlc.html">dmlc</a></li><li class="navelem"><a class="el" href="classdmlc_1_1ConcurrentBlockingQueue.html">ConcurrentBlockingQueue</a></li> </ul>
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<div class="title">dmlc::ConcurrentBlockingQueue&lt; T, type &gt; Class Template Reference</div> </div>
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<p>Cocurrent blocking queue.
<a href="classdmlc_1_1ConcurrentBlockingQueue.html#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="concurrency_8h_source.html">concurrency.h</a>&gt;</code></p>
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Collaboration diagram for dmlc::ConcurrentBlockingQueue&lt; T, type &gt;:</div>
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Public Member Functions</h2></td></tr>
<tr class="memitem:a835ab07cb02d61059eb1bb937fde3550"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1ConcurrentBlockingQueue.html#a835ab07cb02d61059eb1bb937fde3550">ConcurrentBlockingQueue</a> ()</td></tr>
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<tr class="memitem:a2c7e415e3bc1fc3c43536f8f08041dea"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1ConcurrentBlockingQueue.html#a2c7e415e3bc1fc3c43536f8f08041dea">~ConcurrentBlockingQueue</a> ()=default</td></tr>
<tr class="separator:a2c7e415e3bc1fc3c43536f8f08041dea"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a7d462648c0dba8e495e1efaacff6a75a"><td class="memTemplParams" colspan="2">template&lt;typename E &gt; </td></tr>
<tr class="memitem:a7d462648c0dba8e495e1efaacff6a75a"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classdmlc_1_1ConcurrentBlockingQueue.html#a7d462648c0dba8e495e1efaacff6a75a">Push</a> (E &amp;&amp;e, int priority=0)</td></tr>
<tr class="memdesc:a7d462648c0dba8e495e1efaacff6a75a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Push element to the end of the queue. <a href="#a7d462648c0dba8e495e1efaacff6a75a">More...</a><br /></td></tr>
<tr class="separator:a7d462648c0dba8e495e1efaacff6a75a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9ae71ca4d6890a788e162521afb446d8"><td class="memTemplParams" colspan="2">template&lt;typename E &gt; </td></tr>
<tr class="memitem:a9ae71ca4d6890a788e162521afb446d8"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classdmlc_1_1ConcurrentBlockingQueue.html#a9ae71ca4d6890a788e162521afb446d8">PushFront</a> (E &amp;&amp;e, int priority=0)</td></tr>
<tr class="memdesc:a9ae71ca4d6890a788e162521afb446d8"><td class="mdescLeft">&#160;</td><td class="mdescRight">Push element to the front of the queue. Only works for FIFO queue. For priority queue it is the same as Push. <a href="#a9ae71ca4d6890a788e162521afb446d8">More...</a><br /></td></tr>
<tr class="separator:a9ae71ca4d6890a788e162521afb446d8"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:afb8bbf0d5ec39d22b9a3d7c86a649c86"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1ConcurrentBlockingQueue.html#afb8bbf0d5ec39d22b9a3d7c86a649c86">Pop</a> (T *rv)</td></tr>
<tr class="memdesc:afb8bbf0d5ec39d22b9a3d7c86a649c86"><td class="mdescLeft">&#160;</td><td class="mdescRight">Pop element from the queue. <a href="#afb8bbf0d5ec39d22b9a3d7c86a649c86">More...</a><br /></td></tr>
<tr class="separator:afb8bbf0d5ec39d22b9a3d7c86a649c86"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aadedf3f04b1cacb7dd2b834d91447427"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1ConcurrentBlockingQueue.html#aadedf3f04b1cacb7dd2b834d91447427">SignalForKill</a> ()</td></tr>
<tr class="memdesc:aadedf3f04b1cacb7dd2b834d91447427"><td class="mdescLeft">&#160;</td><td class="mdescRight">Signal the queue for destruction. <a href="#aadedf3f04b1cacb7dd2b834d91447427">More...</a><br /></td></tr>
<tr class="separator:aadedf3f04b1cacb7dd2b834d91447427"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aadeb49c6b5bb73d6c5865cc053f5d2f3"><td class="memItemLeft" align="right" valign="top">size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1ConcurrentBlockingQueue.html#aadeb49c6b5bb73d6c5865cc053f5d2f3">Size</a> ()</td></tr>
<tr class="memdesc:aadeb49c6b5bb73d6c5865cc053f5d2f3"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get the size of the queue. <a href="#aadeb49c6b5bb73d6c5865cc053f5d2f3">More...</a><br /></td></tr>
<tr class="separator:aadeb49c6b5bb73d6c5865cc053f5d2f3"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><h3>template&lt;typename T, ConcurrentQueueType type = ConcurrentQueueType::kFIFO&gt;<br />
class dmlc::ConcurrentBlockingQueue&lt; T, type &gt;</h3>
<p>Cocurrent blocking queue. </p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a id="a835ab07cb02d61059eb1bb937fde3550"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a835ab07cb02d61059eb1bb937fde3550">&#9670;&nbsp;</a></span>ConcurrentBlockingQueue()</h2>
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<div class="memtemplate">
template&lt;typename T , ConcurrentQueueType type&gt; </div>
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<td class="memname"><a class="el" href="classdmlc_1_1ConcurrentBlockingQueue.html">dmlc::ConcurrentBlockingQueue</a>&lt; T, type &gt;::<a class="el" href="classdmlc_1_1ConcurrentBlockingQueue.html">ConcurrentBlockingQueue</a> </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td></td>
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</div>
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<h2 class="memtitle"><span class="permalink"><a href="#a2c7e415e3bc1fc3c43536f8f08041dea">&#9670;&nbsp;</a></span>~ConcurrentBlockingQueue()</h2>
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<div class="memtemplate">
template&lt;typename T , ConcurrentQueueType type = ConcurrentQueueType::kFIFO&gt; </div>
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<tr>
<td class="mlabels-left">
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<td class="memname"><a class="el" href="classdmlc_1_1ConcurrentBlockingQueue.html">dmlc::ConcurrentBlockingQueue</a>&lt; T, type &gt;::~<a class="el" href="classdmlc_1_1ConcurrentBlockingQueue.html">ConcurrentBlockingQueue</a> </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
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<span class="mlabels"><span class="mlabel">default</span></span> </td>
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<h2 class="groupheader">Member Function Documentation</h2>
<a id="afb8bbf0d5ec39d22b9a3d7c86a649c86"></a>
<h2 class="memtitle"><span class="permalink"><a href="#afb8bbf0d5ec39d22b9a3d7c86a649c86">&#9670;&nbsp;</a></span>Pop()</h2>
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<div class="memtemplate">
template&lt;typename T , ConcurrentQueueType type&gt; </div>
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<td class="memname">bool <a class="el" href="classdmlc_1_1ConcurrentBlockingQueue.html">dmlc::ConcurrentBlockingQueue</a>&lt; T, type &gt;::Pop </td>
<td>(</td>
<td class="paramtype">T *&#160;</td>
<td class="paramname"><em>rv</em></td><td>)</td>
<td></td>
</tr>
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<p>Pop element from the queue. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">rv</td><td>Element popped. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>On false, the queue is exiting.</dd></dl>
<p>The element will be copied or moved into the object passed in. </p>
</div>
</div>
<a id="a7d462648c0dba8e495e1efaacff6a75a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a7d462648c0dba8e495e1efaacff6a75a">&#9670;&nbsp;</a></span>Push()</h2>
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<div class="memtemplate">
template&lt;typename T , ConcurrentQueueType type&gt; </div>
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template&lt;typename E &gt; </div>
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<td class="memname">void <a class="el" href="classdmlc_1_1ConcurrentBlockingQueue.html">dmlc::ConcurrentBlockingQueue</a>&lt; T, type &gt;::Push </td>
<td>(</td>
<td class="paramtype">E &amp;&amp;&#160;</td>
<td class="paramname"><em>e</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int&#160;</td>
<td class="paramname"><em>priority</em> = <code>0</code>&#160;</td>
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<td>)</td>
<td></td><td></td>
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<p>Push element to the end of the queue. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">e</td><td>Element to push into. </td></tr>
<tr><td class="paramname">priority</td><td>the priority of the element, only used for priority queue. The higher the priority is, the better. </td></tr>
</table>
</dd>
</dl>
<dl class="tparams"><dt>Template Parameters</dt><dd>
<table class="tparams">
<tr><td class="paramname">E</td><td>the element type</td></tr>
</table>
</dd>
</dl>
<p>It will copy or move the element into the queue, depending on the type of the parameter. </p>
</div>
</div>
<a id="a9ae71ca4d6890a788e162521afb446d8"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a9ae71ca4d6890a788e162521afb446d8">&#9670;&nbsp;</a></span>PushFront()</h2>
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template&lt;typename T , ConcurrentQueueType type&gt; </div>
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template&lt;typename E &gt; </div>
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<td class="memname">void <a class="el" href="classdmlc_1_1ConcurrentBlockingQueue.html">dmlc::ConcurrentBlockingQueue</a>&lt; T, type &gt;::PushFront </td>
<td>(</td>
<td class="paramtype">E &amp;&amp;&#160;</td>
<td class="paramname"><em>e</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int&#160;</td>
<td class="paramname"><em>priority</em> = <code>0</code>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<p>Push element to the front of the queue. Only works for FIFO queue. For priority queue it is the same as Push. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">e</td><td>Element to push into. </td></tr>
<tr><td class="paramname">priority</td><td>the priority of the element, only used for priority queue. The higher the priority is, the better. </td></tr>
</table>
</dd>
</dl>
<dl class="tparams"><dt>Template Parameters</dt><dd>
<table class="tparams">
<tr><td class="paramname">E</td><td>the element type</td></tr>
</table>
</dd>
</dl>
<p>It will copy or move the element into the queue, depending on the type of the parameter. </p>
</div>
</div>
<a id="aadedf3f04b1cacb7dd2b834d91447427"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aadedf3f04b1cacb7dd2b834d91447427">&#9670;&nbsp;</a></span>SignalForKill()</h2>
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<div class="memtemplate">
template&lt;typename T , ConcurrentQueueType type&gt; </div>
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<td class="memname">void <a class="el" href="classdmlc_1_1ConcurrentBlockingQueue.html">dmlc::ConcurrentBlockingQueue</a>&lt; T, type &gt;::SignalForKill </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td></td>
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<p>Signal the queue for destruction. </p>
<p>After calling this method, all blocking pop call to the queue will return false. </p>
</div>
</div>
<a id="aadeb49c6b5bb73d6c5865cc053f5d2f3"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aadeb49c6b5bb73d6c5865cc053f5d2f3">&#9670;&nbsp;</a></span>Size()</h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename T , ConcurrentQueueType type&gt; </div>
<table class="memname">
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<td class="memname">size_t <a class="el" href="classdmlc_1_1ConcurrentBlockingQueue.html">dmlc::ConcurrentBlockingQueue</a>&lt; T, type &gt;::Size </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td></td>
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<p>Get the size of the queue. </p>
<dl class="section return"><dt>Returns</dt><dd>The size of the queue. </dd></dl>
</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li>/work/mxnet/3rdparty/dmlc-core/include/dmlc/<a class="el" href="concurrency_8h_source.html">concurrency.h</a></li>
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