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<p>A high-performance thread-safe non-blocking concurrent queue.  
 <a href="a00053.html#details">More...</a></p>

<p><code>#include &lt;concurrent_queue.h&gt;</code></p>
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Inheritance diagram for tbb::strict_ppl::concurrent_queue&lt; T, A &gt;:</div>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
Public Types</h2></td></tr>
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typedef T&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00053.html#aeeee93a7ac2eecc80bbf3e857e900538">value_type</a></td></tr>
<tr class="memdesc:aeeee93a7ac2eecc80bbf3e857e900538"><td class="mdescLeft">&#160;</td><td class="mdescRight">Element type in the queue. <br/></td></tr>
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<tr class="memitem:ab26ddf11b15d61ac87e6c1ae67af92a2"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ab26ddf11b15d61ac87e6c1ae67af92a2"></a>
typedef T &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00053.html#ab26ddf11b15d61ac87e6c1ae67af92a2">reference</a></td></tr>
<tr class="memdesc:ab26ddf11b15d61ac87e6c1ae67af92a2"><td class="mdescLeft">&#160;</td><td class="mdescRight">Reference type. <br/></td></tr>
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typedef const T &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00053.html#a478c2b7f763b2e821e01cc14e13baf4c">const_reference</a></td></tr>
<tr class="memdesc:a478c2b7f763b2e821e01cc14e13baf4c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Const reference type. <br/></td></tr>
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typedef size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00053.html#a9f883e49afea16293ba92da779981bb8">size_type</a></td></tr>
<tr class="memdesc:a9f883e49afea16293ba92da779981bb8"><td class="mdescLeft">&#160;</td><td class="mdescRight">Integral type for representing size of the queue. <br/></td></tr>
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typedef ptrdiff_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00053.html#a63b42d83a9ed13fc6741e0b4388b0e96">difference_type</a></td></tr>
<tr class="memdesc:a63b42d83a9ed13fc6741e0b4388b0e96"><td class="mdescLeft">&#160;</td><td class="mdescRight">Difference type for iterator. <br/></td></tr>
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typedef A&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00053.html#acbdd1a5bd034358fb0774b322a66b1ed">allocator_type</a></td></tr>
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typedef <br class="typebreak"/>
internal::concurrent_queue_iterator<br class="typebreak"/>
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typedef <br class="typebreak"/>
internal::concurrent_queue_iterator<br class="typebreak"/>
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Public Member Functions</h2></td></tr>
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&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00053.html#a49b2e16902577cd3174355be0fa684e5">concurrent_queue</a> (const <a class="el" href="a00053.html#acbdd1a5bd034358fb0774b322a66b1ed">allocator_type</a> &amp;a=<a class="el" href="a00053.html#acbdd1a5bd034358fb0774b322a66b1ed">allocator_type</a>())</td></tr>
<tr class="memdesc:a49b2e16902577cd3174355be0fa684e5"><td class="mdescLeft">&#160;</td><td class="mdescRight">Construct empty queue. <br/></td></tr>
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template&lt;typename InputIterator &gt; </td></tr>
<tr class="memitem:a43ac953152e60815c09fe4a4d4a623a9"><td class="memTemplItemLeft" align="right" valign="top">&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00053.html#a43ac953152e60815c09fe4a4d4a623a9">concurrent_queue</a> (InputIterator begin, InputIterator end, const <a class="el" href="a00053.html#acbdd1a5bd034358fb0774b322a66b1ed">allocator_type</a> &amp;a=<a class="el" href="a00053.html#acbdd1a5bd034358fb0774b322a66b1ed">allocator_type</a>())</td></tr>
<tr class="memdesc:a43ac953152e60815c09fe4a4d4a623a9"><td class="mdescLeft">&#160;</td><td class="mdescRight">[begin,end) constructor <br/></td></tr>
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&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00053.html#ae918807d098d5d5b41cc6d606fa2e7a1">concurrent_queue</a> (const <a class="el" href="a00053.html">concurrent_queue</a> &amp;src, const <a class="el" href="a00053.html#acbdd1a5bd034358fb0774b322a66b1ed">allocator_type</a> &amp;a=<a class="el" href="a00053.html#acbdd1a5bd034358fb0774b322a66b1ed">allocator_type</a>())</td></tr>
<tr class="memdesc:ae918807d098d5d5b41cc6d606fa2e7a1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Copy constructor. <br/></td></tr>
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<tr class="memitem:acc04574f4d7d41fd5cad779508394740"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="acc04574f4d7d41fd5cad779508394740"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00053.html#acc04574f4d7d41fd5cad779508394740">concurrent_queue</a> (<a class="el" href="a00053.html">concurrent_queue</a> &amp;&amp;src)</td></tr>
<tr class="memdesc:acc04574f4d7d41fd5cad779508394740"><td class="mdescLeft">&#160;</td><td class="mdescRight">Move constructors. <br/></td></tr>
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&#160;</td><td class="memItemRight" valign="bottom"><b>concurrent_queue</b> (<a class="el" href="a00053.html">concurrent_queue</a> &amp;&amp;src, const <a class="el" href="a00053.html#acbdd1a5bd034358fb0774b322a66b1ed">allocator_type</a> &amp;a)</td></tr>
<tr class="separator:a22f35cb396178d494a3756d5700e2865"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa0056b242f280f5e25332ce998f9f670"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aa0056b242f280f5e25332ce998f9f670"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00053.html#aa0056b242f280f5e25332ce998f9f670">~concurrent_queue</a> ()</td></tr>
<tr class="memdesc:aa0056b242f280f5e25332ce998f9f670"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destroy queue. <br/></td></tr>
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void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00053.html#a9330ca6590980d80ef7b1ea3613a699a">push</a> (const T &amp;source)</td></tr>
<tr class="memdesc:a9330ca6590980d80ef7b1ea3613a699a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Enqueue an item at tail of queue. <br/></td></tr>
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<tr class="memitem:a40f743f7eb92bb709cb7feb86d340885"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a40f743f7eb92bb709cb7feb86d340885"></a>
void&#160;</td><td class="memItemRight" valign="bottom"><b>push</b> (T &amp;&amp;source)</td></tr>
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<tr class="memitem:a4647d9bf5fd03b0850ada381916e9728"><td class="memTemplParams" colspan="2"><a class="anchor" id="a4647d9bf5fd03b0850ada381916e9728"></a>
template&lt;typename... Arguments&gt; </td></tr>
<tr class="memitem:a4647d9bf5fd03b0850ada381916e9728"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><b>emplace</b> (Arguments &amp;&amp;...args)</td></tr>
<tr class="separator:a4647d9bf5fd03b0850ada381916e9728"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aabb1acef18196fa11ed7db8e046c3943"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00053.html#aabb1acef18196fa11ed7db8e046c3943">try_pop</a> (T &amp;result)</td></tr>
<tr class="memdesc:aabb1acef18196fa11ed7db8e046c3943"><td class="mdescLeft">&#160;</td><td class="mdescRight">Attempt to dequeue an item from head of queue.  <a href="#aabb1acef18196fa11ed7db8e046c3943">More...</a><br/></td></tr>
<tr class="separator:aabb1acef18196fa11ed7db8e046c3943"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aad4b253ba595637b0b146eb6565556f2"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aad4b253ba595637b0b146eb6565556f2"></a>
<a class="el" href="a00053.html#a9f883e49afea16293ba92da779981bb8">size_type</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00053.html#aad4b253ba595637b0b146eb6565556f2">unsafe_size</a> () const </td></tr>
<tr class="memdesc:aad4b253ba595637b0b146eb6565556f2"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return the number of items in the queue; thread unsafe. <br/></td></tr>
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<tr class="memitem:aeda3156929d0c250faed7b807ca6ab0e"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aeda3156929d0c250faed7b807ca6ab0e"></a>
bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00053.html#aeda3156929d0c250faed7b807ca6ab0e">empty</a> () const </td></tr>
<tr class="memdesc:aeda3156929d0c250faed7b807ca6ab0e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Equivalent to size()==0. <br/></td></tr>
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<tr class="memitem:ad3384818fb6350a494d5ec62445e59ee"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ad3384818fb6350a494d5ec62445e59ee"></a>
void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00053.html#ad3384818fb6350a494d5ec62445e59ee">clear</a> ()</td></tr>
<tr class="memdesc:ad3384818fb6350a494d5ec62445e59ee"><td class="mdescLeft">&#160;</td><td class="mdescRight">Clear the queue. not thread-safe. <br/></td></tr>
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<tr class="memitem:a7f2b39f350281590b86db906eca6c480"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a7f2b39f350281590b86db906eca6c480"></a>
<a class="el" href="a00053.html#acbdd1a5bd034358fb0774b322a66b1ed">allocator_type</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00053.html#a7f2b39f350281590b86db906eca6c480">get_allocator</a> () const </td></tr>
<tr class="memdesc:a7f2b39f350281590b86db906eca6c480"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return allocator object. <br/></td></tr>
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iterator&#160;</td><td class="memItemRight" valign="bottom"><b>unsafe_begin</b> ()</td></tr>
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iterator&#160;</td><td class="memItemRight" valign="bottom"><b>unsafe_end</b> ()</td></tr>
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const_iterator&#160;</td><td class="memItemRight" valign="bottom"><b>unsafe_begin</b> () const </td></tr>
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const_iterator&#160;</td><td class="memItemRight" valign="bottom"><b>unsafe_end</b> () const </td></tr>
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Friends</h2></td></tr>
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template&lt;typename Container , typename Value &gt; </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, typename A = cache_aligned_allocator&lt;T&gt;&gt;<br/>
class tbb::strict_ppl::concurrent_queue&lt; T, A &gt;</h3>

<p>A high-performance thread-safe non-blocking concurrent queue. </p>
<p>Multiple threads may each push and pop concurrently. Assignment construction is not allowed. </p>
</div><h2 class="groupheader">Member Function Documentation</h2>
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template&lt;typename T , typename A  = cache_aligned_allocator&lt;T&gt;&gt; </div>
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          <td class="memname">bool <a class="el" href="a00053.html">tbb::strict_ppl::concurrent_queue</a>&lt; T, A &gt;::try_pop </td>
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<p>Attempt to dequeue an item from head of queue. </p>
<p>Does not wait for item to become available. Returns true if successful; false otherwise. </p>

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<hr/>The documentation for this class was generated from the following file:<ul>
<li>concurrent_queue.h</li>
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