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<li class="navelem"><a class="el" href="dir_df9c78dcf3f59a33b12284f95992a64b.html">ripple</a></li><li class="navelem"><a class="el" href="dir_875063d0bf0fe9cb23dcbe977d2f1b80.html">beast</a></li><li class="navelem"><a class="el" href="dir_223f184debdf6ae64fb31fff8f0f9803.html">clock</a></li> </ul>
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<div class="title">basic_seconds_clock.cpp</div> </div>
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<div class="contents">
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">//------------------------------------------------------------------------------</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">/*</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> This file is part of Beast: https://github.com/vinniefalco/Beast</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> Copyright 2021, Howard Hinnant <howard.hinnant@gmail.com></span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"></span> </div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> Permission to use, copy, modify, and/or distribute this software for any</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> purpose with or without fee is hereby granted, provided that the above</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> copyright notice and this permission notice appear in all copies.</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"></span> </div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">*/</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">//==============================================================================</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  </div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <ripple/beast/clock/basic_seconds_clock.h></span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  </div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/cassert.html">cassert</a>></span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/chrono.html">chrono</a>></span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/condition_variable.html">condition_variable</a>></span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/mutex.html">mutex</a>></span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/thread.html">thread</a>></span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  </div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">namespace </span><a class="code" href="namespacebeast.html">beast</a> {</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  </div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">namespace </span>{</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  </div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment">// Updates the clock</span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">class </span>seconds_clock_thread</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> {</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keyword">using</span> Clock = <a class="code" href="classbeast_1_1basic__seconds__clock.html#af5eead30c5c82e82eedc7af51ee784dd">basic_seconds_clock::Clock</a>;</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  </div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keywordtype">bool</span> stop_;</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/mutex.html">std::mutex</a> mut_;</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/condition_variable.html">std::condition_variable</a> cv_;</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/thread.html">std::thread</a> thread_;</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  Clock::time_point tp_;</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  </div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  ~seconds_clock_thread();</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  seconds_clock_thread();</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  </div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  Clock::time_point</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  now();</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  </div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  run();</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> };</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  </div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> seconds_clock_thread::~seconds_clock_thread()</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> {</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  assert(thread_.<a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/thread/joinable.html">joinable</a>());</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  {</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/lock_guard.html">std::lock_guard</a> <a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/lock.html">lock</a>(mut_);</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  stop_ = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  } <span class="comment">// publish stop_ asap so if waiting thread times-out, it will see it</span></div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  cv_.<a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/condition_variable/notify_one.html">notify_one</a>();</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  thread_.<a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/thread/join.html">join</a>();</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> }</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  </div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> seconds_clock_thread::seconds_clock_thread() : stop_{<span class="keyword">false</span>}, tp_{Clock::now()}</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> {</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  thread_ = <a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/thread.html">std::thread</a>(&seconds_clock_thread::run, <span class="keyword">this</span>);</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> }</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  </div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> seconds_clock_thread::Clock::time_point</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> seconds_clock_thread::now()</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> {</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/lock_guard.html">std::lock_guard</a> <a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/lock.html">lock</a>(mut_);</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">return</span> tp_;</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> }</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  </div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> seconds_clock_thread::run()</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> {</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/unique_lock.html">std::unique_lock</a> <a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/lock.html">lock</a>(mut_);</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">while</span> (<span class="keyword">true</span>)</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  {</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keyword">using namespace </span><a class="codeRef" href="http://en.cppreference.com/w/namespacestd_1_1chrono.html">std::chrono</a>;</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  </div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  tp_ = Clock::now();</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keyword">auto</span> <span class="keyword">const</span> when = floor<seconds>(tp_) + 1s;</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordflow">if</span> (cv_.<a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/condition_variable/wait_until.html">wait_until</a>(lock, when, [<span class="keyword">this</span>] { return stop_; }))</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  }</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> }</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  </div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> } <span class="comment">// unnamed namespace</span></div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  </div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> basic_seconds_clock::time_point</div>
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<div class="line"><a name="l00096"></a><span class="lineno"><a class="line" href="classbeast_1_1basic__seconds__clock.html#ac1cd1ea282c74e960dbe66fb7de0b344"> 96</a></span> basic_seconds_clock::now()</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> {</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keyword">static</span> seconds_clock_thread clk;</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">return</span> clk.now();</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> }</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  </div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> } <span class="comment">// namespace beast</span></div>
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</div><!-- fragment --></div><!-- contents -->
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<div class="ttc" id="alock_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/thread/lock.html">std::lock</a></div><div class="ttdeci">T lock(T... args)</div></div>
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<div class="ttc" id="alock_guard_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/thread/lock_guard.html">std::lock_guard</a></div><div class="ttdoc">STL class.</div></div>
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<div class="ttc" id="ajoinable_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/thread/thread/joinable.html">std::thread::joinable</a></div><div class="ttdeci">T joinable(T... args)</div></div>
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<div class="ttc" id="aclassbeast_1_1basic__seconds__clock_html_af5eead30c5c82e82eedc7af51ee784dd"><div class="ttname"><a href="classbeast_1_1basic__seconds__clock.html#af5eead30c5c82e82eedc7af51ee784dd">beast::basic_seconds_clock::Clock</a></div><div class="ttdeci">std::chrono::steady_clock Clock</div><div class="ttdef"><b>Definition:</b> <a href="basic__seconds__clock_8h_source.html#l00039">basic_seconds_clock.h:39</a></div></div>
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<div class="ttc" id="athread_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/thread.html">thread</a></div></div>
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<div class="ttc" id="achrono_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/chrono.html">chrono</a></div></div>
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<div class="ttc" id="aunique_lock_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/thread/unique_lock.html">std::unique_lock</a></div><div class="ttdoc">STL class.</div></div>
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<div class="ttc" id="anotify_one_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/thread/condition_variable/notify_one.html">std::condition_variable::notify_one</a></div><div class="ttdeci">T notify_one(T... args)</div></div>
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<div class="ttc" id="await_until_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/thread/condition_variable/wait_until.html">std::condition_variable::wait_until</a></div><div class="ttdeci">T wait_until(T... args)</div></div>
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<div class="ttc" id="acassert_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/cassert.html">cassert</a></div></div>
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<div class="ttc" id="acondition_variable_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/condition_variable.html">condition_variable</a></div></div>
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<div class="ttc" id="amutex_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/mutex.html">mutex</a></div></div>
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<div class="ttc" id="ajoin_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/thread/thread/join.html">std::thread::join</a></div><div class="ttdeci">T join(T... args)</div></div>
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<div class="ttc" id="anamespacebeast_html"><div class="ttname"><a href="namespacebeast.html">beast</a></div><div class="ttdef"><b>Definition:</b> <a href="base__uint_8h_source.html#l00654">base_uint.h:654</a></div></div>
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<div class="ttc" id="anamespacestd_1_1chrono_html"><div class="ttname"><a href="http://en.cppreference.com/w/namespacestd_1_1chrono.html">std::chrono</a></div></div>
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