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<li class="navelem"><a class="el" href="namespacebeast.html">beast</a></li><li class="navelem"><a class="el" href="classbeast_1_1io__latency__probe.html">io_latency_probe</a></li> </ul>
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<div class="title">beast::io_latency_probe&lt; Clock &gt; Class Template Reference</div> </div>
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<p>Measures handler latency on an io_service queue.
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structbeast_1_1io__latency__probe_1_1sample__op.html">sample_op</a></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:afdfc98452171bf713bc0e9dc177a9922"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbeast_1_1io__latency__probe.html#afdfc98452171bf713bc0e9dc177a9922">io_latency_probe</a> (<a class="el" href="classbeast_1_1io__latency__probe.html#a686c16ebff88519c5a04a9be08b86b04">duration</a> const &amp;period, boost::asio::io_service &amp;ios)</td></tr>
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<tr class="memitem:aa96df10dfc2d320b6a87e168cb55f729"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbeast_1_1io__latency__probe.html#aa96df10dfc2d320b6a87e168cb55f729">~io_latency_probe</a> ()</td></tr>
<tr class="separator:aa96df10dfc2d320b6a87e168cb55f729"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a583609000bb804d60aa7404f8d01762b"><td class="memTemplParams" colspan="2">template&lt;class Handler &gt; </td></tr>
<tr class="memitem:a583609000bb804d60aa7404f8d01762b"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classbeast_1_1io__latency__probe.html#a583609000bb804d60aa7404f8d01762b">sample_one</a> (Handler &amp;&amp;handler)</td></tr>
<tr class="memdesc:a583609000bb804d60aa7404f8d01762b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Measure one sample of i/o latency. <a href="classbeast_1_1io__latency__probe.html#a583609000bb804d60aa7404f8d01762b">More...</a><br /></td></tr>
<tr class="separator:a583609000bb804d60aa7404f8d01762b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0d31e25fc6af4e3ed0ff85c82e0a5599"><td class="memTemplParams" colspan="2">template&lt;class Handler &gt; </td></tr>
<tr class="memitem:a0d31e25fc6af4e3ed0ff85c82e0a5599"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classbeast_1_1io__latency__probe.html#a0d31e25fc6af4e3ed0ff85c82e0a5599">sample</a> (Handler &amp;&amp;handler)</td></tr>
<tr class="memdesc:a0d31e25fc6af4e3ed0ff85c82e0a5599"><td class="mdescLeft">&#160;</td><td class="mdescRight">Initiate continuous i/o latency sampling. <a href="classbeast_1_1io__latency__probe.html#a0d31e25fc6af4e3ed0ff85c82e0a5599">More...</a><br /></td></tr>
<tr class="separator:a0d31e25fc6af4e3ed0ff85c82e0a5599"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<tr class="memdesc:af112ed904aa00860d062d2900e199378"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return the io_service associated with the latency probe. <a href="classbeast_1_1io__latency__probe.html#af112ed904aa00860d062d2900e199378">More...</a><br /></td></tr>
<tr class="separator:af112ed904aa00860d062d2900e199378"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad96645a67b356dae82ecd4d2d0851b20"><td class="memItemLeft" align="right" valign="top">boost::asio::io_service const &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbeast_1_1io__latency__probe.html#ad96645a67b356dae82ecd4d2d0851b20">get_io_service</a> () const</td></tr>
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<tr class="memitem:a3aacab2155a327714b711dc3dbc8c69c"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbeast_1_1io__latency__probe.html#a3aacab2155a327714b711dc3dbc8c69c">cancel</a> ()</td></tr>
<tr class="memdesc:a3aacab2155a327714b711dc3dbc8c69c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Cancel all pending i/o. <a href="classbeast_1_1io__latency__probe.html#a3aacab2155a327714b711dc3dbc8c69c">More...</a><br /></td></tr>
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Private Types</h2></td></tr>
<tr class="memitem:a686c16ebff88519c5a04a9be08b86b04"><td class="memItemLeft" align="right" valign="top">using&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbeast_1_1io__latency__probe.html#a686c16ebff88519c5a04a9be08b86b04">duration</a> = typename Clock::duration</td></tr>
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Private Member Functions</h2></td></tr>
<tr class="memitem:abb9c67df3d6e343c2712618752c6ad5f"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbeast_1_1io__latency__probe.html#abb9c67df3d6e343c2712618752c6ad5f">cancel</a> (<a class="elRef" href="http://en.cppreference.com/w/cpp/thread/unique_lock.html">std::unique_lock</a>&lt; decltype(<a class="el" href="classbeast_1_1io__latency__probe.html#a29c18ff449978ef74989fce7dc4d8bae">m_mutex</a>)&gt; &amp;lock, bool wait)</td></tr>
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<tr class="memitem:a4ad793e4145f2062fcbe2a2c25dde6c4"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbeast_1_1io__latency__probe.html#a4ad793e4145f2062fcbe2a2c25dde6c4">addref</a> ()</td></tr>
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<tr class="memitem:a7f82fe723caebead49ca8bdf479ebc22"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbeast_1_1io__latency__probe.html#a7f82fe723caebead49ca8bdf479ebc22">release</a> ()</td></tr>
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Private Attributes</h2></td></tr>
<tr class="memitem:a29c18ff449978ef74989fce7dc4d8bae"><td class="memItemLeft" align="right" valign="top"><a class="elRef" href="http://en.cppreference.com/w/cpp/thread/recursive_mutex.html">std::recursive_mutex</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbeast_1_1io__latency__probe.html#a29c18ff449978ef74989fce7dc4d8bae">m_mutex</a></td></tr>
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<tr class="memitem:a783c2279e0f950923ffdbdd8997ce8c3"><td class="memItemLeft" align="right" valign="top"><a class="elRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbeast_1_1io__latency__probe.html#a783c2279e0f950923ffdbdd8997ce8c3">m_count</a></td></tr>
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<tr class="memitem:a7a23e5981067195890e71bb44b07e0f0"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="classbeast_1_1io__latency__probe.html#a686c16ebff88519c5a04a9be08b86b04">duration</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbeast_1_1io__latency__probe.html#a7a23e5981067195890e71bb44b07e0f0">m_period</a></td></tr>
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<tr class="memitem:aba1ffe854135963273599b10d1a808f1"><td class="memItemLeft" align="right" valign="top">boost::asio::io_service &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbeast_1_1io__latency__probe.html#aba1ffe854135963273599b10d1a808f1">m_ios</a></td></tr>
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<tr class="memitem:a36fc1e9d3fa836e6f8913643eed50707"><td class="memItemLeft" align="right" valign="top">boost::asio::basic_waitable_timer&lt; <a class="elRef" href="http://en.cppreference.com/w/cpp/chrono/steady_clock.html">std::chrono::steady_clock</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbeast_1_1io__latency__probe.html#a36fc1e9d3fa836e6f8913643eed50707">m_timer</a></td></tr>
<tr class="separator:a36fc1e9d3fa836e6f8913643eed50707"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:afc81df0e2b1263891edacabf50bc9477"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbeast_1_1io__latency__probe.html#afc81df0e2b1263891edacabf50bc9477">m_cancel</a></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><h3>template&lt;class Clock&gt;<br />
class beast::io_latency_probe&lt; Clock &gt;</h3>
<p>Measures handler latency on an io_service queue. </p>
<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00034">34</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
</div><h2 class="groupheader">Member Typedef Documentation</h2>
<a id="a686c16ebff88519c5a04a9be08b86b04"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a686c16ebff88519c5a04a9be08b86b04">&#9670;&nbsp;</a></span>duration</h2>
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template&lt;class Clock &gt; </div>
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<td class="memname">using <a class="el" href="classbeast_1_1io__latency__probe.html">beast::io_latency_probe</a>&lt; Clock &gt;::<a class="el" href="classbeast_1_1io__latency__probe.html#a686c16ebff88519c5a04a9be08b86b04">duration</a> = typename Clock::duration</td>
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<span class="mlabels"><span class="mlabel">private</span></span> </td>
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<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00037">37</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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<a id="af3e7ad1c48054c4e9363aa7a4d69bc1d"></a>
<h2 class="memtitle"><span class="permalink"><a href="#af3e7ad1c48054c4e9363aa7a4d69bc1d">&#9670;&nbsp;</a></span>time_point</h2>
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<div class="memtemplate">
template&lt;class Clock &gt; </div>
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<td class="memname">using <a class="el" href="classbeast_1_1io__latency__probe.html">beast::io_latency_probe</a>&lt; Clock &gt;::<a class="el" href="classbeast_1_1io__latency__probe.html#af3e7ad1c48054c4e9363aa7a4d69bc1d">time_point</a> = typename Clock::time_point</td>
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<span class="mlabels"><span class="mlabel">private</span></span> </td>
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<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00038">38</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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<h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a id="afdfc98452171bf713bc0e9dc177a9922"></a>
<h2 class="memtitle"><span class="permalink"><a href="#afdfc98452171bf713bc0e9dc177a9922">&#9670;&nbsp;</a></span>io_latency_probe()</h2>
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<div class="memproto">
<div class="memtemplate">
template&lt;class Clock &gt; </div>
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<td class="memname"><a class="el" href="classbeast_1_1io__latency__probe.html">beast::io_latency_probe</a>&lt; Clock &gt;::<a class="el" href="classbeast_1_1io__latency__probe.html">io_latency_probe</a> </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classbeast_1_1io__latency__probe.html#a686c16ebff88519c5a04a9be08b86b04">duration</a> const &amp;&#160;</td>
<td class="paramname"><em>period</em>, </td>
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<td class="paramtype">boost::asio::io_service &amp;&#160;</td>
<td class="paramname"><em>ios</em>&#160;</td>
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<td>)</td>
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<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00049">49</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aa96df10dfc2d320b6a87e168cb55f729">&#9670;&nbsp;</a></span>~io_latency_probe()</h2>
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<td class="memname"><a class="el" href="classbeast_1_1io__latency__probe.html">beast::io_latency_probe</a>&lt; Clock &gt;::~<a class="el" href="classbeast_1_1io__latency__probe.html">io_latency_probe</a> </td>
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<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00058">58</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#af112ed904aa00860d062d2900e199378">&#9670;&nbsp;</a></span>get_io_service() <span class="overload">[1/2]</span></h2>
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<td class="memname">boost::asio::io_service&amp; <a class="el" href="classbeast_1_1io__latency__probe.html">beast::io_latency_probe</a>&lt; Clock &gt;::get_io_service </td>
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<p>Return the io_service associated with the latency probe. </p>
<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00067">67</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ad96645a67b356dae82ecd4d2d0851b20">&#9670;&nbsp;</a></span>get_io_service() <span class="overload">[2/2]</span></h2>
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<td class="memname">boost::asio::io_service const&amp; <a class="el" href="classbeast_1_1io__latency__probe.html">beast::io_latency_probe</a>&lt; Clock &gt;::get_io_service </td>
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<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00073">73</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a3aacab2155a327714b711dc3dbc8c69c">&#9670;&nbsp;</a></span>cancel() <span class="overload">[1/2]</span></h2>
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<td class="memname">void <a class="el" href="classbeast_1_1io__latency__probe.html">beast::io_latency_probe</a>&lt; Clock &gt;::cancel </td>
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<p>Cancel all pending i/o. </p>
<p>Any handlers which have already been queued will still be called. </p>
<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00084">84</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#adaee7525295db67f85573a6b73eff113">&#9670;&nbsp;</a></span>cancel_async()</h2>
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<td class="memname">void <a class="el" href="classbeast_1_1io__latency__probe.html">beast::io_latency_probe</a>&lt; Clock &gt;::cancel_async </td>
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<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00091">91</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a583609000bb804d60aa7404f8d01762b">&#9670;&nbsp;</a></span>sample_one()</h2>
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<td class="memname">void <a class="el" href="classbeast_1_1io__latency__probe.html">beast::io_latency_probe</a>&lt; Clock &gt;::sample_one </td>
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<p>Measure one sample of i/o latency. </p>
<p>Handler will be called with this signature: void Handler (Duration d); </p>
<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00104">104</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a0d31e25fc6af4e3ed0ff85c82e0a5599">&#9670;&nbsp;</a></span>sample()</h2>
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<td class="memname">void <a class="el" href="classbeast_1_1io__latency__probe.html">beast::io_latency_probe</a>&lt; Clock &gt;::sample </td>
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<p>Initiate continuous i/o latency sampling. </p>
<p>Handler will be called with this signature: void Handler (<a class="elRef" href="http://en.cppreference.com/w/cpp/chrono/duration.html">std::chrono::milliseconds</a>); </p>
<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00119">119</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#abb9c67df3d6e343c2712618752c6ad5f">&#9670;&nbsp;</a></span>cancel() <span class="overload">[2/2]</span></h2>
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<td class="memname">void <a class="el" href="classbeast_1_1io__latency__probe.html">beast::io_latency_probe</a>&lt; Clock &gt;::cancel </td>
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<td class="paramtype"><a class="elRef" href="http://en.cppreference.com/w/cpp/thread/unique_lock.html">std::unique_lock</a>&lt; decltype(<a class="el" href="classbeast_1_1io__latency__probe.html#a29c18ff449978ef74989fce7dc4d8bae">m_mutex</a>)&gt; &amp;&#160;</td>
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<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00130">130</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a4ad793e4145f2062fcbe2a2c25dde6c4">&#9670;&nbsp;</a></span>addref()</h2>
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<td class="memname">void <a class="el" href="classbeast_1_1io__latency__probe.html">beast::io_latency_probe</a>&lt; Clock &gt;::addref </td>
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<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00143">143</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a7f82fe723caebead49ca8bdf479ebc22">&#9670;&nbsp;</a></span>release()</h2>
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<td class="memname">void <a class="el" href="classbeast_1_1io__latency__probe.html">beast::io_latency_probe</a>&lt; Clock &gt;::release </td>
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<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00150">150</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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<h2 class="groupheader">Member Data Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a29c18ff449978ef74989fce7dc4d8bae">&#9670;&nbsp;</a></span>m_mutex</h2>
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<td class="memname"><a class="elRef" href="http://en.cppreference.com/w/cpp/thread/recursive_mutex.html">std::recursive_mutex</a> <a class="el" href="classbeast_1_1io__latency__probe.html">beast::io_latency_probe</a>&lt; Clock &gt;::m_mutex</td>
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<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00040">40</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#abcfd188c27ce5224fd41dc8cf0e2d659">&#9670;&nbsp;</a></span>m_cond</h2>
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<td class="memname"><a class="elRef" href="http://en.cppreference.com/w/cpp/thread/condition_variable_any.html">std::condition_variable_any</a> <a class="el" href="classbeast_1_1io__latency__probe.html">beast::io_latency_probe</a>&lt; Clock &gt;::m_cond</td>
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<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00041">41</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a783c2279e0f950923ffdbdd8997ce8c3">&#9670;&nbsp;</a></span>m_count</h2>
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<td class="memname"><a class="elRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> <a class="el" href="classbeast_1_1io__latency__probe.html">beast::io_latency_probe</a>&lt; Clock &gt;::m_count</td>
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<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00042">42</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a7a23e5981067195890e71bb44b07e0f0">&#9670;&nbsp;</a></span>m_period</h2>
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<td class="memname">const <a class="el" href="classbeast_1_1io__latency__probe.html#a686c16ebff88519c5a04a9be08b86b04">duration</a> <a class="el" href="classbeast_1_1io__latency__probe.html">beast::io_latency_probe</a>&lt; Clock &gt;::m_period</td>
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<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00043">43</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aba1ffe854135963273599b10d1a808f1">&#9670;&nbsp;</a></span>m_ios</h2>
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<td class="memname">boost::asio::io_service&amp; <a class="el" href="classbeast_1_1io__latency__probe.html">beast::io_latency_probe</a>&lt; Clock &gt;::m_ios</td>
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<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00044">44</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a36fc1e9d3fa836e6f8913643eed50707">&#9670;&nbsp;</a></span>m_timer</h2>
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<td class="memname">boost::asio::basic_waitable_timer&lt;<a class="elRef" href="http://en.cppreference.com/w/cpp/chrono/steady_clock.html">std::chrono::steady_clock</a>&gt; <a class="el" href="classbeast_1_1io__latency__probe.html">beast::io_latency_probe</a>&lt; Clock &gt;::m_timer</td>
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<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00045">45</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#afc81df0e2b1263891edacabf50bc9477">&#9670;&nbsp;</a></span>m_cancel</h2>
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<p class="definition">Definition at line <a class="el" href="io__latency__probe_8h_source.html#l00046">46</a> of file <a class="el" href="io__latency__probe_8h_source.html">io_latency_probe.h</a>.</p>
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