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<li class="navelem"><a class="el" href="a00222.html">tbb</a></li><li class="navelem"><b>interface5</b></li><li class="navelem"><a class="el" href="a00037.html">concurrent_priority_queue</a></li> </ul>
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<div class="title">tbb::interface5::concurrent_priority_queue&lt; T, Compare, A &gt; Class Template Reference</div> </div>
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<p>Concurrent priority queue.
<a href="a00037.html#details">More...</a></p>
<p><code>#include &lt;concurrent_priority_queue.h&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
Public Types</h2></td></tr>
<tr class="memitem:a2c75d97ae429019363ab6fd1a872512e"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a2c75d97ae429019363ab6fd1a872512e"></a>
typedef T&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#a2c75d97ae429019363ab6fd1a872512e">value_type</a></td></tr>
<tr class="memdesc:a2c75d97ae429019363ab6fd1a872512e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Element type in the queue. <br/></td></tr>
<tr class="separator:a2c75d97ae429019363ab6fd1a872512e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae4b7ed2ddc8ec6cc910f935c9d299c7a"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ae4b7ed2ddc8ec6cc910f935c9d299c7a"></a>
typedef T &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#ae4b7ed2ddc8ec6cc910f935c9d299c7a">reference</a></td></tr>
<tr class="memdesc:ae4b7ed2ddc8ec6cc910f935c9d299c7a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Reference type. <br/></td></tr>
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<tr class="memitem:a0bd617fe8e4657777e86f0ae15d8094f"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a0bd617fe8e4657777e86f0ae15d8094f"></a>
typedef const T &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#a0bd617fe8e4657777e86f0ae15d8094f">const_reference</a></td></tr>
<tr class="memdesc:a0bd617fe8e4657777e86f0ae15d8094f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Const reference type. <br/></td></tr>
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<tr class="memitem:a7d3da9b47ec58e1c09e3550f702edcfc"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a7d3da9b47ec58e1c09e3550f702edcfc"></a>
typedef size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#a7d3da9b47ec58e1c09e3550f702edcfc">size_type</a></td></tr>
<tr class="memdesc:a7d3da9b47ec58e1c09e3550f702edcfc"><td class="mdescLeft">&#160;</td><td class="mdescRight">Integral type for representing size of the queue. <br/></td></tr>
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<tr class="memitem:ae010b1fa9c0942504737228474b51a0b"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ae010b1fa9c0942504737228474b51a0b"></a>
typedef ptrdiff_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#ae010b1fa9c0942504737228474b51a0b">difference_type</a></td></tr>
<tr class="memdesc:ae010b1fa9c0942504737228474b51a0b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Difference type for iterator. <br/></td></tr>
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<tr class="memitem:a1d2cebf242fa83d88eebdc3ad6891fb1"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a1d2cebf242fa83d88eebdc3ad6891fb1"></a>
typedef A&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#a1d2cebf242fa83d88eebdc3ad6891fb1">allocator_type</a></td></tr>
<tr class="memdesc:a1d2cebf242fa83d88eebdc3ad6891fb1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Allocator type. <br/></td></tr>
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</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a405be01bac4048f214797c287e2571a1"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a405be01bac4048f214797c287e2571a1"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#a405be01bac4048f214797c287e2571a1">concurrent_priority_queue</a> (const <a class="el" href="a00037.html#a1d2cebf242fa83d88eebdc3ad6891fb1">allocator_type</a> &amp;a=<a class="el" href="a00037.html#a1d2cebf242fa83d88eebdc3ad6891fb1">allocator_type</a>())</td></tr>
<tr class="memdesc:a405be01bac4048f214797c287e2571a1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructs a new <a class="el" href="a00037.html" title="Concurrent priority queue. ">concurrent_priority_queue</a> with default capacity. <br/></td></tr>
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&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#a43c3917ea8a19cf1fec947e29ad4ff3e">concurrent_priority_queue</a> (<a class="el" href="a00037.html#a7d3da9b47ec58e1c09e3550f702edcfc">size_type</a> init_capacity, const <a class="el" href="a00037.html#a1d2cebf242fa83d88eebdc3ad6891fb1">allocator_type</a> &amp;a=<a class="el" href="a00037.html#a1d2cebf242fa83d88eebdc3ad6891fb1">allocator_type</a>())</td></tr>
<tr class="memdesc:a43c3917ea8a19cf1fec947e29ad4ff3e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructs a new <a class="el" href="a00037.html" title="Concurrent priority queue. ">concurrent_priority_queue</a> with init_sz capacity. <br/></td></tr>
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template&lt;typename InputIterator &gt; </td></tr>
<tr class="memitem:a0cebee26cc0d00d4dcbb1c74e08029f7"><td class="memTemplItemLeft" align="right" valign="top">&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00037.html#a0cebee26cc0d00d4dcbb1c74e08029f7">concurrent_priority_queue</a> (InputIterator begin, InputIterator end, const <a class="el" href="a00037.html#a1d2cebf242fa83d88eebdc3ad6891fb1">allocator_type</a> &amp;a=<a class="el" href="a00037.html#a1d2cebf242fa83d88eebdc3ad6891fb1">allocator_type</a>())</td></tr>
<tr class="memdesc:a0cebee26cc0d00d4dcbb1c74e08029f7"><td class="mdescLeft">&#160;</td><td class="mdescRight">[begin,end) constructor <br/></td></tr>
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<tr class="memitem:a111763d621fa792f281c2a13bd3e5edf"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a111763d621fa792f281c2a13bd3e5edf"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#a111763d621fa792f281c2a13bd3e5edf">concurrent_priority_queue</a> (std::initializer_list&lt; T &gt; const &amp;init_list, const <a class="el" href="a00037.html#a1d2cebf242fa83d88eebdc3ad6891fb1">allocator_type</a> &amp;a=<a class="el" href="a00037.html#a1d2cebf242fa83d88eebdc3ad6891fb1">allocator_type</a>())</td></tr>
<tr class="memdesc:a111763d621fa792f281c2a13bd3e5edf"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor from std::initializer_list. <br/></td></tr>
<tr class="separator:a111763d621fa792f281c2a13bd3e5edf"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a332d26234f9c37a6b7ba269c648815d0"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#a332d26234f9c37a6b7ba269c648815d0">concurrent_priority_queue</a> (const <a class="el" href="a00037.html">concurrent_priority_queue</a> &amp;src)</td></tr>
<tr class="memdesc:a332d26234f9c37a6b7ba269c648815d0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Copy constructor. <a href="#a332d26234f9c37a6b7ba269c648815d0">More...</a><br/></td></tr>
<tr class="separator:a332d26234f9c37a6b7ba269c648815d0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa52cea369b6630699ee78cc42622be9d"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#aa52cea369b6630699ee78cc42622be9d">concurrent_priority_queue</a> (const <a class="el" href="a00037.html">concurrent_priority_queue</a> &amp;src, const <a class="el" href="a00037.html#a1d2cebf242fa83d88eebdc3ad6891fb1">allocator_type</a> &amp;a)</td></tr>
<tr class="memdesc:aa52cea369b6630699ee78cc42622be9d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Copy constructor with specific allocator. <a href="#aa52cea369b6630699ee78cc42622be9d">More...</a><br/></td></tr>
<tr class="separator:aa52cea369b6630699ee78cc42622be9d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac0c3f41b10f04547f3438517c40cf8a5"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00037.html">concurrent_priority_queue</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#ac0c3f41b10f04547f3438517c40cf8a5">operator=</a> (const <a class="el" href="a00037.html">concurrent_priority_queue</a> &amp;src)</td></tr>
<tr class="memdesc:ac0c3f41b10f04547f3438517c40cf8a5"><td class="mdescLeft">&#160;</td><td class="mdescRight">Assignment operator. <a href="#ac0c3f41b10f04547f3438517c40cf8a5">More...</a><br/></td></tr>
<tr class="separator:ac0c3f41b10f04547f3438517c40cf8a5"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac64c7b627708f0d6b2e5421fb0d49150"><td class="memTemplParams" colspan="2"><a class="anchor" id="ac64c7b627708f0d6b2e5421fb0d49150"></a>
template&lt;typename InputIterator &gt; </td></tr>
<tr class="memitem:ac64c7b627708f0d6b2e5421fb0d49150"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00037.html#ac64c7b627708f0d6b2e5421fb0d49150">assign</a> (InputIterator begin, InputIterator end)</td></tr>
<tr class="memdesc:ac64c7b627708f0d6b2e5421fb0d49150"><td class="mdescLeft">&#160;</td><td class="mdescRight">Assign the queue from [begin,end) range, not thread-safe. <br/></td></tr>
<tr class="separator:ac64c7b627708f0d6b2e5421fb0d49150"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ada4a58867572d9ff340c6692a226d457"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ada4a58867572d9ff340c6692a226d457"></a>
void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#ada4a58867572d9ff340c6692a226d457">assign</a> (std::initializer_list&lt; T &gt; const &amp;il)</td></tr>
<tr class="memdesc:ada4a58867572d9ff340c6692a226d457"><td class="mdescLeft">&#160;</td><td class="mdescRight">Assign the queue from std::initializer_list, not thread-safe. <br/></td></tr>
<tr class="separator:ada4a58867572d9ff340c6692a226d457"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a32eb9c65caf399b62fac7c13e65af05f"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a32eb9c65caf399b62fac7c13e65af05f"></a>
<a class="el" href="a00037.html">concurrent_priority_queue</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#a32eb9c65caf399b62fac7c13e65af05f">operator=</a> (std::initializer_list&lt; T &gt; const &amp;il)</td></tr>
<tr class="memdesc:a32eb9c65caf399b62fac7c13e65af05f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Assign from std::initializer_list, not thread-safe. <br/></td></tr>
<tr class="separator:a32eb9c65caf399b62fac7c13e65af05f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8dec2dd0e8b22af14f1753eaef1bf5eb"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#a8dec2dd0e8b22af14f1753eaef1bf5eb">empty</a> () const </td></tr>
<tr class="memdesc:a8dec2dd0e8b22af14f1753eaef1bf5eb"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns true if empty, false otherwise. <a href="#a8dec2dd0e8b22af14f1753eaef1bf5eb">More...</a><br/></td></tr>
<tr class="separator:a8dec2dd0e8b22af14f1753eaef1bf5eb"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a7d86ba200474b51ec99a6b917429c6bb"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00037.html#a7d3da9b47ec58e1c09e3550f702edcfc">size_type</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#a7d86ba200474b51ec99a6b917429c6bb">size</a> () const </td></tr>
<tr class="memdesc:a7d86ba200474b51ec99a6b917429c6bb"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the current number of elements contained in the queue. <a href="#a7d86ba200474b51ec99a6b917429c6bb">More...</a><br/></td></tr>
<tr class="separator:a7d86ba200474b51ec99a6b917429c6bb"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1bfa0e7269b3407d6bb5c706264d2406"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#a1bfa0e7269b3407d6bb5c706264d2406">push</a> (<a class="el" href="a00037.html#a0bd617fe8e4657777e86f0ae15d8094f">const_reference</a> elem)</td></tr>
<tr class="memdesc:a1bfa0e7269b3407d6bb5c706264d2406"><td class="mdescLeft">&#160;</td><td class="mdescRight">Pushes elem onto the queue, increasing capacity of queue if necessary. <a href="#a1bfa0e7269b3407d6bb5c706264d2406">More...</a><br/></td></tr>
<tr class="separator:a1bfa0e7269b3407d6bb5c706264d2406"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a954177b09e184cf3db47f1b180a7ef5e"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#a954177b09e184cf3db47f1b180a7ef5e">try_pop</a> (<a class="el" href="a00037.html#ae4b7ed2ddc8ec6cc910f935c9d299c7a">reference</a> elem)</td></tr>
<tr class="memdesc:a954177b09e184cf3db47f1b180a7ef5e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Gets a reference to and removes highest priority element. <a href="#a954177b09e184cf3db47f1b180a7ef5e">More...</a><br/></td></tr>
<tr class="separator:a954177b09e184cf3db47f1b180a7ef5e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a2459166998a4103880d603b237c429e6"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#a2459166998a4103880d603b237c429e6">clear</a> ()</td></tr>
<tr class="memdesc:a2459166998a4103880d603b237c429e6"><td class="mdescLeft">&#160;</td><td class="mdescRight">Clear the queue; not thread-safe. <a href="#a2459166998a4103880d603b237c429e6">More...</a><br/></td></tr>
<tr class="separator:a2459166998a4103880d603b237c429e6"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa6ee6d356e538b67a7cb4e242e6e36c9"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#aa6ee6d356e538b67a7cb4e242e6e36c9">swap</a> (<a class="el" href="a00037.html">concurrent_priority_queue</a> &amp;q)</td></tr>
<tr class="memdesc:aa6ee6d356e538b67a7cb4e242e6e36c9"><td class="mdescLeft">&#160;</td><td class="mdescRight">Swap this queue with another; not thread-safe. <a href="#aa6ee6d356e538b67a7cb4e242e6e36c9">More...</a><br/></td></tr>
<tr class="separator:aa6ee6d356e538b67a7cb4e242e6e36c9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a312e88e51246da4c516d35abbb30721a"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a312e88e51246da4c516d35abbb30721a"></a>
<a class="el" href="a00037.html#a1d2cebf242fa83d88eebdc3ad6891fb1">allocator_type</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00037.html#a312e88e51246da4c516d35abbb30721a">get_allocator</a> () const </td></tr>
<tr class="memdesc:a312e88e51246da4c516d35abbb30721a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return allocator object. <br/></td></tr>
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</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><h3>template&lt;typename T, typename Compare = std::less&lt;T&gt;, typename A = cache_aligned_allocator&lt;T&gt;&gt;<br/>
class tbb::interface5::concurrent_priority_queue&lt; T, Compare, A &gt;</h3>
<p>Concurrent priority queue. </p>
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<p>Copy constructor. </p>
<p>This operation is unsafe if there are pending concurrent operations on the src queue. </p>
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<p>Copy constructor with specific allocator. </p>
<p>This operation is unsafe if there are pending concurrent operations on the src queue. </p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<td class="memname">void <a class="el" href="a00037.html">tbb::interface5::concurrent_priority_queue</a>&lt; T, Compare, A &gt;::clear </td>
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<p>Clear the queue; not thread-safe. </p>
<p>This operation is unsafe if there are pending concurrent operations on the queue. Resets size, effectively emptying queue; does not free space. May not clear elements added in pending operations. </p>
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<td class="memname">bool <a class="el" href="a00037.html">tbb::interface5::concurrent_priority_queue</a>&lt; T, Compare, A &gt;::empty </td>
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<p>Returns true if empty, false otherwise. </p>
<p>Returned value may not reflect results of pending operations. This operation reads shared data and will trigger a race condition. </p>
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<td class="memname"><a class="el" href="a00037.html">concurrent_priority_queue</a>&amp; <a class="el" href="a00037.html">tbb::interface5::concurrent_priority_queue</a>&lt; T, Compare, A &gt;::operator= </td>
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<p>Assignment operator. </p>
<p>This operation is unsafe if there are pending concurrent operations on the src queue. </p>
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<td class="memname">void <a class="el" href="a00037.html">tbb::interface5::concurrent_priority_queue</a>&lt; T, Compare, A &gt;::push </td>
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<p>Pushes elem onto the queue, increasing capacity of queue if necessary. </p>
<p>This operation can be safely used concurrently with other push, try_pop or reserve operations. </p>
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<td class="memname"><a class="el" href="a00037.html#a7d3da9b47ec58e1c09e3550f702edcfc">size_type</a> <a class="el" href="a00037.html">tbb::interface5::concurrent_priority_queue</a>&lt; T, Compare, A &gt;::size </td>
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<p>Returns the current number of elements contained in the queue. </p>
<p>Returned value may not reflect results of pending operations. This operation reads shared data and will trigger a race condition. </p>
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<td class="memname">void <a class="el" href="a00037.html">tbb::interface5::concurrent_priority_queue</a>&lt; T, Compare, A &gt;::swap </td>
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<p>Swap this queue with another; not thread-safe. </p>
<p>This operation is unsafe if there are pending concurrent operations on the queue. </p>
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<p>Gets a reference to and removes highest priority element. </p>
<p>If a highest priority element was found, sets elem and returns true, otherwise returns false. This operation can be safely used concurrently with other push, try_pop or reserve operations. </p>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li>concurrent_priority_queue.h</li>
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