<!-- HTML header for doxygen 1.8.13--><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/><meta http-equiv="X-UA-Compatible" content="IE=9"/><meta name="generator" content="Doxygen 1.8.14"/><meta name="viewport" content="width=device-width, initial-scale=1"/><title>Cpp-Taskflow</title><link href="tabs.css" rel="stylesheet" type="text/css"/><link rel="icon" type="image/x-icon" href="favicon.ico" /><script type="text/javascript" src="jquery.js"></script><script type="text/javascript" src="dynsections.js"></script><link href="navtree.css" rel="stylesheet" type="text/css"/><script type="text/javascript" src="resize.js"></script><script type="text/javascript" src="navtreedata.js"></script><script type="text/javascript" src="navtree.js"></script><script type="text/javascript">/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */$(document).ready(initResizable);/* @license-end */</script><link href="search/search.css" rel="stylesheet" type="text/css"/><script type="text/javascript" src="search/searchdata.js"></script><script type="text/javascript" src="search/search.js"></script><link href="doxygen.css" rel="stylesheet" type="text/css" /></head><body><div id="top"><!-- do not remove this div, it is closed by doxygen! --><div id="titlearea"><table cellspacing="0" cellpadding="0"><tbody><tr style="height: 56px;"><td id="projectalign" style="padding-left: 0.5em;"><div id="projectname"><a href="https://github.com/cpp-taskflow/cpp-taskflow">Cpp-Taskflow</a> <span id="projectnumber">2.4-master-branch</span></div></td></tr></tbody></table></div><!-- end header part --><!-- Generated by Doxygen 1.8.14 --><script type="text/javascript">/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */var 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id="doc-content"><!-- window showing the filter options --><div id="MSearchSelectWindow"onmouseover="return searchBox.OnSearchSelectShow()"onmouseout="return searchBox.OnSearchSelectHide()"onkeydown="return searchBox.OnSearchSelectKey(event)"></div><!-- iframe showing the search results (closed by default) --><div id="MSearchResultsWindow"><iframe src="javascript:void(0)" frameborder="0"name="MSearchResults" id="MSearchResults"></iframe></div><div class="header"><div class="headertitle"><div class="title">observer.hpp</div> </div></div><!--header--><div class="contents"><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// 2020年04月30日 - midified by Tsung-Wei Huang</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// - adding TaskflowBoard support</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">//</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// 2019年07月31日 - modified by Tsung-Wei Huang</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// - fixed the missing comma in outputing JSON </span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">//</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// 2019年06月13日 - modified by Tsung-Wei Huang</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// - added TaskView interface</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">//</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// 2019年04月17日 - created by Tsung-Wei Huang</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> </div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#pragma once</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> </div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "task.hpp"</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keyword">namespace </span><a class="code" href="namespacetf.html">tf</a> {</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div><div class="line"><a name="l00027"></a><span class="lineno"><a class="line" href="classtf_1_1ObserverInterface.html"> 27</a></span> <span class="keyword">class </span><a class="code" href="classtf_1_1ObserverInterface.html">ObserverInterface</a> {</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="classtf_1_1Executor.html">Executor</a>;</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  </div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keyword">virtual</span> <a class="code" href="classtf_1_1ObserverInterface.html#adfd71c3af3ae2ea4f41eed26c1b6f604">~ObserverInterface</a>() = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  </div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classtf_1_1ObserverInterface.html#acca2db87a08b084737c915d0e4a420d2">set_up</a>(<span class="keywordtype">unsigned</span> num_workers) = 0;</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  </div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classtf_1_1ObserverInterface.html#a113c1720111dfa72ef4eec2a0937ab54">on_entry</a>(<span class="keywordtype">unsigned</span> worker_id, <a class="code" href="classtf_1_1TaskView.html">TaskView</a> task_view) = 0;</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  </div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classtf_1_1ObserverInterface.html#adb6bd1daf9bb00fe6512829fbda29d36">on_exit</a>(<span class="keywordtype">unsigned</span> worker_id, <a class="code" href="classtf_1_1TaskView.html">TaskView</a> task_view) = 0;</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> };</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment">// ----------------------------------------------------------------------------</span></div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment">// ChromeTracingObserver definition</span></div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment">// ----------------------------------------------------------------------------</span></div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div><div class="line"><a name="l00069"></a><span class="lineno"><a class="line" href="classtf_1_1ChromeTracingObserver.html"> 69</a></span> <span class="keyword">class </span><a class="code" href="classtf_1_1ChromeTracingObserver.html">ChromeTracingObserver</a> : <span class="keyword">public</span> <a class="code" href="classtf_1_1ObserverInterface.html">ObserverInterface</a> {</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="classtf_1_1Executor.html">Executor</a>;</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  </div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="comment">// data structure to record each task execution</span></div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keyword">struct </span>Segment {</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> name;</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/time_point.html">std::chrono::time_point<std::chrono::steady_clock></a> beg;</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/time_point.html">std::chrono::time_point<std::chrono::steady_clock></a> end;</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  Segment(</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keyword">const</span> <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a>& n,</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/time_point.html">std::chrono::time_point<std::chrono::steady_clock></a> b</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  );</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  Segment(</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keyword">const</span> <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a>& n,</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/time_point.html">std::chrono::time_point<std::chrono::steady_clock></a> b,</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/time_point.html">std::chrono::time_point<std::chrono::steady_clock></a> e</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  );</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  };</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  </div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// data structure to store the entire execution timeline</span></div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keyword">struct </span>Timeline {</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/time_point.html">std::chrono::time_point<std::chrono::steady_clock></a> origin;</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector<std::vector<Segment></a>> segments;</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  }; </div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classtf_1_1ChromeTracingObserver.html#a504effe13f9ab63d1a0df827c39cdc0d">dump</a>(<a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::ostream</a>& ostream) <span class="keyword">const</span>;</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keyword">inline</span> <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> <a class="code" href="classtf_1_1ChromeTracingObserver.html#a504effe13f9ab63d1a0df827c39cdc0d">dump</a>() <span class="keyword">const</span>;</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classtf_1_1ChromeTracingObserver.html#a80b781d1df8f31c2b73df55b36d2e104">clear</a>();</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keyword">inline</span> <span class="keywordtype">size_t</span> <a class="code" href="classtf_1_1ChromeTracingObserver.html#a996fcaf138dd62ea9edbb3e013e921a9">num_tasks</a>() <span class="keyword">const</span>;</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  </div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> set_up(<span class="keywordtype">unsigned</span> num_workers) <span class="keyword">override</span> <span class="keyword">final</span>;</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> on_entry(<span class="keywordtype">unsigned</span> worker_id, <a class="code" href="classtf_1_1TaskView.html">TaskView</a> task_view) <span class="keyword">override</span> <span class="keyword">final</span>;</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> on_exit(<span class="keywordtype">unsigned</span> worker_id, <a class="code" href="classtf_1_1TaskView.html">TaskView</a> task_view) <span class="keyword">override</span> <span class="keyword">final</span>;</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  Timeline _timeline;</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> }; </div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  </div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment">// constructor</span></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="keyword">inline</span> ChromeTracingObserver::Segment::Segment(</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keyword">const</span> <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a>& n,</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/time_point.html">std::chrono::time_point<std::chrono::steady_clock></a> b</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span> ) :</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  name {n}, beg {b} {</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span> } </div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment">// constructor</span></div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="keyword">inline</span> ChromeTracingObserver::Segment::Segment(</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keyword">const</span> <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a>& n,</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/time_point.html">std::chrono::time_point<std::chrono::steady_clock></a> b,</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/time_point.html">std::chrono::time_point<std::chrono::steady_clock></a> e</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> ) :</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  name {n}, beg {b}, <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/iterator/end.html">end</a> {e} {</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span> }</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="comment">// Procedure: set_up</span></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> ChromeTracingObserver::set_up(<span class="keywordtype">unsigned</span> num_workers) {</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span> </div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  _timeline.segments.resize(num_workers);</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordflow">for</span>(<span class="keywordtype">unsigned</span> w=0; w<num_workers; ++w) {</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  _timeline.segments[w].reserve(32);</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  }</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  </div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  _timeline.origin = <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/steady_clock/now.html">std::chrono::steady_clock::now</a>();</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span> }</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span> </div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="comment">// Procedure: on_entry</span></div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> ChromeTracingObserver::on_entry(<span class="keywordtype">unsigned</span> w, TaskView tv) {</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  _timeline.segments[w].emplace_back(</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  tv.name(), <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/steady_clock/now.html">std::chrono::steady_clock::now</a>()</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  );</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span> }</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span> </div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="comment">// Procedure: on_exit</span></div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> ChromeTracingObserver::on_exit(<span class="keywordtype">unsigned</span> w, TaskView) {</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  assert(_timeline.segments[w].size() > 0);</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  _timeline.segments[w].back().end = <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/steady_clock/now.html">std::chrono::steady_clock::now</a>();</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span> }</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span> </div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="comment">// Function: clear</span></div><div class="line"><a name="l00176"></a><span class="lineno"><a class="line" href="classtf_1_1ChromeTracingObserver.html#a80b781d1df8f31c2b73df55b36d2e104"> 176</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classtf_1_1ChromeTracingObserver.html#a80b781d1df8f31c2b73df55b36d2e104">ChromeTracingObserver::clear</a>() {</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordflow">for</span>(<span class="keywordtype">size_t</span> w=0; w<_timeline.segments.size(); ++w) {</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  _timeline.segments[w].clear();</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  }</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span> }</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span> </div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="comment">// Procedure: dump</span></div><div class="line"><a name="l00183"></a><span class="lineno"><a class="line" href="classtf_1_1ChromeTracingObserver.html#af443dbf15bfba3f35686b7cdfc1aee38"> 183</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classtf_1_1ChromeTracingObserver.html#a504effe13f9ab63d1a0df827c39cdc0d">ChromeTracingObserver::dump</a>(<a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::ostream</a>& os)<span class="keyword"> const </span>{</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span> </div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="keywordtype">size_t</span> first;</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span> </div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keywordflow">for</span>(first = 0; first<_timeline.segments.size(); ++first) {</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordflow">if</span>(_timeline.segments[first].size() > 0) { </div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keywordflow">break</span>; </div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  }</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  }</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span> </div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  os << <span class="charliteral">'['</span>;</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span> </div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keywordflow">for</span>(<span class="keywordtype">size_t</span> w=first; w<_timeline.segments.size(); w++) {</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span> </div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">if</span>(w != first && _timeline.segments[w].size() > 0) {</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  os << <span class="charliteral">','</span>;</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  }</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span> </div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keywordflow">for</span>(<span class="keywordtype">size_t</span> i=0; i<_timeline.segments[w].size(); i++) {</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span> </div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  os << <span class="charliteral">'{'</span></div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  << <span class="stringliteral">"\"cat\":\"ChromeTracingObserver\","</span>;</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span> </div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="comment">// name field</span></div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  os << <span class="stringliteral">"\"name\":\""</span>;</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keywordflow">if</span>(_timeline.segments[w][i].name.empty()) {</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  os << w << <span class="charliteral">'_'</span> << i;</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  }</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">else</span> {</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  os << _timeline.segments[w][i].name;</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  }</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  os << <span class="stringliteral">"\","</span>;</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  </div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="comment">// segment field</span></div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  os << <span class="stringliteral">"\"ph\":\"X\","</span></div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  << <span class="stringliteral">"\"pid\":1,"</span></div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  << <span class="stringliteral">"\"tid\":"</span> << w << <span class="charliteral">','</span></div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  << <span class="stringliteral">"\"ts\":"</span> << <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/duration/duration_cast.html">std::chrono::duration_cast</a><<a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/duration.html">std::chrono::microseconds</a>>(</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  _timeline.segments[w][i].beg - _timeline.origin</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  ).count() << <span class="charliteral">','</span></div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  << <span class="stringliteral">"\"dur\":"</span> << <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/duration/duration_cast.html">std::chrono::duration_cast</a><<a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/duration.html">std::chrono::microseconds</a>>(</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  _timeline.segments[w][i].end - _timeline.segments[w][i].beg</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  ).count();</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span> </div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keywordflow">if</span>(i != _timeline.segments[w].size() - 1) {</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  os << <span class="stringliteral">"},"</span>;</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  }</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="keywordflow">else</span> {</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  os << <span class="charliteral">'}'</span>;</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  }</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  }</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  }</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  os << <span class="stringliteral">"]\n"</span>;</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span> }</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span> </div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span> <span class="comment">// Function: dump</span></div><div class="line"><a name="l00239"></a><span class="lineno"><a class="line" href="classtf_1_1ChromeTracingObserver.html#a504effe13f9ab63d1a0df827c39cdc0d"> 239</a></span> <span class="keyword">inline</span> <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> <a class="code" href="classtf_1_1ChromeTracingObserver.html#a504effe13f9ab63d1a0df827c39cdc0d">ChromeTracingObserver::dump</a>()<span class="keyword"> const </span>{</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/io/basic_ostringstream.html">std::ostringstream</a> oss;</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <a class="code" href="classtf_1_1ChromeTracingObserver.html#a504effe13f9ab63d1a0df827c39cdc0d">dump</a>(oss);</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordflow">return</span> oss.str();</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span> }</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span> </div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span> <span class="comment">// Function: num_tasks</span></div><div class="line"><a name="l00246"></a><span class="lineno"><a class="line" href="classtf_1_1ChromeTracingObserver.html#a996fcaf138dd62ea9edbb3e013e921a9"> 246</a></span> <span class="keyword">inline</span> <span class="keywordtype">size_t</span> <a class="code" href="classtf_1_1ChromeTracingObserver.html#a996fcaf138dd62ea9edbb3e013e921a9">ChromeTracingObserver::num_tasks</a>()<span class="keyword"> const </span>{</div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keywordflow">return</span> std::accumulate(</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  _timeline.segments.begin(), _timeline.segments.end(), <span class="keywordtype">size_t</span>{0}, </div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  [](<span class="keywordtype">size_t</span> sum, <span class="keyword">const</span> <span class="keyword">auto</span>& exe){ </div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordflow">return</span> sum + exe.size(); </div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  }</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  );</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span> }</div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span> </div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span> <span class="comment">// ----------------------------------------------------------------------------</span></div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span> <span class="comment">// TFProfObserver definition</span></div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span> <span class="comment">// ----------------------------------------------------------------------------</span></div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span> </div><div class="line"><a name="l00265"></a><span class="lineno"><a class="line" href="classtf_1_1TFProfObserver.html"> 265</a></span> <span class="keyword">class </span><a class="code" href="classtf_1_1TFProfObserver.html">TFProfObserver</a> : <span class="keyword">public</span> <a class="code" href="classtf_1_1ObserverInterface.html">ObserverInterface</a> {</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span> </div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="classtf_1_1Executor.html">Executor</a>;</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  </div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="comment">// data structure to record each task execution</span></div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  <span class="keyword">struct </span>Segment {</div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span> </div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> name;</div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  TaskType type;</div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span> </div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/time_point.html">std::chrono::time_point<std::chrono::steady_clock></a> beg;</div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/time_point.html">std::chrono::time_point<std::chrono::steady_clock></a> end;</div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span> </div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  Segment(</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="keyword">const</span> <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a>& n,</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  TaskType t,</div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/time_point.html">std::chrono::time_point<std::chrono::steady_clock></a> b</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  );</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span> </div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  Segment(</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keyword">const</span> <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a>& n,</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  TaskType t,</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/time_point.html">std::chrono::time_point<std::chrono::steady_clock></a> b,</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/time_point.html">std::chrono::time_point<std::chrono::steady_clock></a> e</div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  );</div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  };</div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  </div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <span class="comment">// data structure to store the entire execution timeline</span></div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keyword">struct </span>Timeline {</div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/time_point.html">std::chrono::time_point<std::chrono::steady_clock></a> origin;</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector<std::vector<Segment></a>> segments;</div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  }; </div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span> </div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  </div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classtf_1_1TFProfObserver.html#a59e82cb3f9b0ada38aa1ddea14f14d02">dump</a>(<a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::ostream</a>& ostream) <span class="keyword">const</span>;</div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span> </div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="keyword">inline</span> <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> <a class="code" href="classtf_1_1TFProfObserver.html#a59e82cb3f9b0ada38aa1ddea14f14d02">dump</a>() <span class="keyword">const</span>;</div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span> </div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classtf_1_1TFProfObserver.html#a5e1f63034a96a5a79cef6da412efd203">clear</a>();</div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span> </div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="keyword">inline</span> <span class="keywordtype">size_t</span> <a class="code" href="classtf_1_1TFProfObserver.html#a8b3b0bee8762af654cfebd2bb2ee98ed">num_tasks</a>() <span class="keyword">const</span>;</div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span> </div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  </div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> set_up(<span class="keywordtype">unsigned</span> num_workers) <span class="keyword">override</span> <span class="keyword">final</span>;</div><div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> on_entry(<span class="keywordtype">unsigned</span> worker_id, <a class="code" href="classtf_1_1TaskView.html">TaskView</a> task_view) <span class="keyword">override</span> <span class="keyword">final</span>;</div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> on_exit(<span class="keywordtype">unsigned</span> worker_id, <a class="code" href="classtf_1_1TaskView.html">TaskView</a> task_view) <span class="keyword">override</span> <span class="keyword">final</span>;</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span> </div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  Timeline _timeline;</div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span> </div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  UUID _uuid;</div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span> }; </div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span> </div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span> <span class="comment">// constructor</span></div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span> <span class="keyword">inline</span> TFProfObserver::Segment::Segment(</div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <span class="keyword">const</span> <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a>& n,</div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  TaskType t,</div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/time_point.html">std::chrono::time_point<std::chrono::steady_clock></a> b</div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span> ) :</div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  name {n}, type {t}, beg {b} {</div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span> } </div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span> </div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span> <span class="comment">// constructor</span></div><div class="line"><a name="l00344"></a><span class="lineno"> 344</span> <span class="keyword">inline</span> TFProfObserver::Segment::Segment(</div><div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="keyword">const</span> <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a>& n,</div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  TaskType t,</div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/time_point.html">std::chrono::time_point<std::chrono::steady_clock></a> b,</div><div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/time_point.html">std::chrono::time_point<std::chrono::steady_clock></a> e</div><div class="line"><a name="l00349"></a><span class="lineno"> 349</span> ) :</div><div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  name {n}, type {t}, beg {b}, <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/iterator/end.html">end</a> {e} {</div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span> }</div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span> </div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span> <span class="comment">// Procedure: set_up</span></div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> TFProfObserver::set_up(<span class="keywordtype">unsigned</span> num_workers) {</div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span> </div><div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  _timeline.segments.resize(num_workers);</div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span> </div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="keywordflow">for</span>(<span class="keywordtype">unsigned</span> w=0; w<num_workers; ++w) {</div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  _timeline.segments[w].reserve(32);</div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  }</div><div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  </div><div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  _timeline.origin = <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/steady_clock/now.html">std::chrono::steady_clock::now</a>();</div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span> }</div><div class="line"><a name="l00364"></a><span class="lineno"> 364</span> </div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span> <span class="comment">// Procedure: on_entry</span></div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> TFProfObserver::on_entry(<span class="keywordtype">unsigned</span> w, TaskView tv) {</div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  _timeline.segments[w].emplace_back(</div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  tv.name(), tv.type(), <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/steady_clock/now.html">std::chrono::steady_clock::now</a>()</div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  );</div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span> }</div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span> </div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span> <span class="comment">// Procedure: on_exit</span></div><div class="line"><a name="l00373"></a><span class="lineno"> 373</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> TFProfObserver::on_exit(<span class="keywordtype">unsigned</span> w, TaskView) {</div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  assert(_timeline.segments[w].size() > 0);</div><div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  _timeline.segments[w].back().end = <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/steady_clock/now.html">std::chrono::steady_clock::now</a>();</div><div class="line"><a name="l00376"></a><span class="lineno"> 376</span> }</div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span> </div><div class="line"><a name="l00378"></a><span class="lineno"> 378</span> <span class="comment">// Function: clear</span></div><div class="line"><a name="l00379"></a><span class="lineno"><a class="line" href="classtf_1_1TFProfObserver.html#a5e1f63034a96a5a79cef6da412efd203"> 379</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classtf_1_1TFProfObserver.html#a5e1f63034a96a5a79cef6da412efd203">TFProfObserver::clear</a>() {</div><div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keywordflow">for</span>(<span class="keywordtype">size_t</span> w=0; w<_timeline.segments.size(); ++w) {</div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  _timeline.segments[w].clear();</div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  }</div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span> }</div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span> </div><div class="line"><a name="l00385"></a><span class="lineno"> 385</span> <span class="comment">// Procedure: dump</span></div><div class="line"><a name="l00386"></a><span class="lineno"><a class="line" href="classtf_1_1TFProfObserver.html#a9f1e839e2a8d3abd0b91ac454f0d078b"> 386</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classtf_1_1TFProfObserver.html#a59e82cb3f9b0ada38aa1ddea14f14d02">TFProfObserver::dump</a>(<a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::ostream</a>& os)<span class="keyword"> const </span>{</div><div class="line"><a name="l00387"></a><span class="lineno"> 387</span> </div><div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <span class="keywordtype">size_t</span> first;</div><div class="line"><a name="l00389"></a><span class="lineno"> 389</span> </div><div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <span class="keywordflow">for</span>(first = 0; first<_timeline.segments.size(); ++first) {</div><div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="keywordflow">if</span>(_timeline.segments[first].size() > 0) { </div><div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  <span class="keywordflow">break</span>; </div><div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  }</div><div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  }</div><div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  </div><div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <span class="comment">// not timeline data to dump</span></div><div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  <span class="keywordflow">if</span>(first == _timeline.segments.size()) {</div><div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  os << <span class="stringliteral">"{}\n"</span>;</div><div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  }</div><div class="line"><a name="l00401"></a><span class="lineno"> 401</span> </div><div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  os << <span class="stringliteral">"{\"executor\":\""</span> << _uuid << <span class="stringliteral">"\",\"data\":["</span>;</div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span> </div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  <span class="keywordflow">for</span>(<span class="keywordtype">size_t</span> w=first; w<_timeline.segments.size(); w++) {</div><div class="line"><a name="l00405"></a><span class="lineno"> 405</span> </div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  <span class="keywordflow">if</span>(_timeline.segments[w].empty()) {</div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  }</div><div class="line"><a name="l00409"></a><span class="lineno"> 409</span> </div><div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <span class="keywordflow">if</span>(w != first) {</div><div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  os << <span class="charliteral">','</span>;</div><div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  }</div><div class="line"><a name="l00413"></a><span class="lineno"> 413</span> </div><div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  os << <span class="stringliteral">"{\"worker\":\"worker "</span> << w << <span class="stringliteral">"\",\"data\":["</span>;</div><div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <span class="keywordflow">for</span>(<span class="keywordtype">size_t</span> i=0; i<_timeline.segments[w].size(); ++i) {</div><div class="line"><a name="l00416"></a><span class="lineno"> 416</span> </div><div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="keyword">const</span> <span class="keyword">auto</span>& s = _timeline.segments[w][i];</div><div class="line"><a name="l00418"></a><span class="lineno"> 418</span> </div><div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  <span class="keywordflow">if</span>(i) os << <span class="charliteral">','</span>;</div><div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  </div><div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  <span class="comment">// span </span></div><div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  os << <span class="stringliteral">"{\"span\":["</span> </div><div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  << <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/duration/duration_cast.html">std::chrono::duration_cast</a><<a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/duration.html">std::chrono::microseconds</a>>(</div><div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  s.beg - _timeline.origin</div><div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  ).count() << <span class="stringliteral">","</span></div><div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  << <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/duration/duration_cast.html">std::chrono::duration_cast</a><<a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/chrono/duration.html">std::chrono::microseconds</a>>(</div><div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  s.end - _timeline.origin</div><div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  ).count() << <span class="stringliteral">"],"</span>;</div><div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  </div><div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  <span class="comment">// name</span></div><div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  os << <span class="stringliteral">"\"name\":\""</span>; </div><div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <span class="keywordflow">if</span>(s.name.empty()) {</div><div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  os << w << <span class="charliteral">'_'</span> << i;</div><div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  }</div><div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  <span class="keywordflow">else</span> {</div><div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  os << s.name;</div><div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  }</div><div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  os << <span class="stringliteral">"\","</span>;</div><div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  </div><div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <span class="comment">// category "type": "Condition Task",</span></div><div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  os << <span class="stringliteral">"\"type\":\""</span> << task_type_to_string(s.type) << <span class="stringliteral">"\""</span>;</div><div class="line"><a name="l00442"></a><span class="lineno"> 442</span> </div><div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  os << <span class="stringliteral">"}"</span>;</div><div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  }</div><div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  os << <span class="stringliteral">"]}"</span>;</div><div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  }</div><div class="line"><a name="l00447"></a><span class="lineno"> 447</span> </div><div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  os << <span class="stringliteral">"]}\n"</span>;</div><div class="line"><a name="l00449"></a><span class="lineno"> 449</span> }</div><div class="line"><a name="l00450"></a><span class="lineno"> 450</span> </div><div class="line"><a name="l00451"></a><span class="lineno"> 451</span> <span class="comment">// Function: dump</span></div><div class="line"><a name="l00452"></a><span class="lineno"><a class="line" href="classtf_1_1TFProfObserver.html#a59e82cb3f9b0ada38aa1ddea14f14d02"> 452</a></span> <span class="keyword">inline</span> <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> <a class="code" href="classtf_1_1TFProfObserver.html#a59e82cb3f9b0ada38aa1ddea14f14d02">TFProfObserver::dump</a>()<span class="keyword"> const </span>{</div><div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  <a class="codeRef" doxygen="/Users/twhuang/PhD/Code/cpp-taskflow/doxygen/cppreference-doxygen-web.tag.xml:http://en.cppreference.com/w/" href="http://en.cppreference.com/w/cpp/io/basic_ostringstream.html">std::ostringstream</a> oss;</div><div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <a class="code" href="classtf_1_1TFProfObserver.html#a59e82cb3f9b0ada38aa1ddea14f14d02">dump</a>(oss);</div><div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <span class="keywordflow">return</span> oss.str();</div><div class="line"><a name="l00456"></a><span class="lineno"> 456</span> }</div><div class="line"><a name="l00457"></a><span class="lineno"> 457</span> </div><div class="line"><a name="l00458"></a><span class="lineno"> 458</span> <span class="comment">// Function: num_tasks</span></div><div class="line"><a name="l00459"></a><span class="lineno"><a class="line" href="classtf_1_1TFProfObserver.html#a8b3b0bee8762af654cfebd2bb2ee98ed"> 459</a></span> <span class="keyword">inline</span> <span class="keywordtype">size_t</span> <a class="code" href="classtf_1_1TFProfObserver.html#a8b3b0bee8762af654cfebd2bb2ee98ed">TFProfObserver::num_tasks</a>()<span class="keyword"> const </span>{</div><div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <span class="keywordflow">return</span> std::accumulate(</div><div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  _timeline.segments.begin(), _timeline.segments.end(), <span class="keywordtype">size_t</span>{0}, </div><div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  [](<span class="keywordtype">size_t</span> sum, <span class="keyword">const</span> <span class="keyword">auto</span>& exe){ </div><div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <span class="keywordflow">return</span> sum + exe.size(); </div><div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  }</div><div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  );</div><div class="line"><a name="l00466"></a><span class="lineno"> 466</span> }</div><div class="line"><a name="l00467"></a><span class="lineno"> 467</span> </div><div class="line"><a name="l00468"></a><span class="lineno"> 468</span> <span class="comment">// ----------------------------------------------------------------------------</span></div><div class="line"><a name="l00469"></a><span class="lineno"> 469</span> <span class="comment">// Identifier for Each Built-in Observer</span></div><div class="line"><a name="l00470"></a><span class="lineno"> 470</span> <span class="comment">// ----------------------------------------------------------------------------</span></div><div class="line"><a name="l00471"></a><span class="lineno"> 471</span> </div><div class="line"><a name="l00477"></a><span class="lineno"> 477</span> <span class="keyword">enum</span> ObserverType {</div><div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  TFPROF = 1,</div><div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  CHROME = 2</div><div class="line"><a name="l00480"></a><span class="lineno"> 480</span> };</div><div class="line"><a name="l00481"></a><span class="lineno"> 481</span> </div><div class="line"><a name="l00485"></a><span class="lineno"> 485</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* observer_type_to_string(ObserverType type) {</div><div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <span class="keyword">const</span> <span class="keywordtype">char</span>* val;</div><div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <span class="keywordflow">switch</span>(type) {</div><div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  <span class="keywordflow">case</span> TFPROF: val = <span class="stringliteral">"TFProf"</span>; <span class="keywordflow">break</span>;</div><div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  <span class="keywordflow">case</span> CHROME: val = <span class="stringliteral">"Chrome"</span>; <span class="keywordflow">break</span>;</div><div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  <span class="keywordflow">default</span>: val = <span class="stringliteral">"undefined"</span>; <span class="keywordflow">break</span>;</div><div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  }</div><div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <span class="keywordflow">return</span> val;</div><div class="line"><a name="l00493"></a><span class="lineno"> 493</span> }</div><div class="line"><a name="l00494"></a><span class="lineno"> 494</span> </div><div class="line"><a name="l00495"></a><span class="lineno"> 495</span> <span class="comment">// ----------------------------------------------------------------------------</span></div><div class="line"><a name="l00496"></a><span class="lineno"> 496</span> <span class="comment">// Legacy Alias</span></div><div class="line"><a name="l00497"></a><span class="lineno"> 497</span> <span class="comment">// ----------------------------------------------------------------------------</span></div><div class="line"><a name="l00498"></a><span class="lineno"> 498</span> <span class="keyword">using</span> ExecutorObserverInterface = ObserverInterface;</div><div class="line"><a name="l00499"></a><span class="lineno"> 499</span> <span class="keyword">using</span> ExecutorObserver = ChromeTracingObserver;</div><div class="line"><a name="l00500"></a><span class="lineno"> 500</span> </div><div class="line"><a name="l00501"></a><span class="lineno"> 501</span> </div><div class="line"><a name="l00502"></a><span class="lineno"> 502</span> } <span class="comment">// end of namespace tf -----------------------------------------------------</span></div><div class="line"><a name="l00503"></a><span class="lineno"> 503</span> </div><div class="line"><a name="l00504"></a><span class="lineno"> 504</span> </div><div class="ttc" id="duration_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/chrono/duration.html">std::chrono::microseconds</a></div></div><div class="ttc" id="classtf_1_1ChromeTracingObserver_html_a996fcaf138dd62ea9edbb3e013e921a9"><div class="ttname"><a href="classtf_1_1ChromeTracingObserver.html#a996fcaf138dd62ea9edbb3e013e921a9">tf::ChromeTracingObserver::num_tasks</a></div><div class="ttdeci">size_t num_tasks() const</div><div class="ttdoc">get the number of total tasks in the observer </div><div class="ttdef"><b>Definition:</b> observer.hpp:246</div></div><div class="ttc" id="classtf_1_1TFProfObserver_html_a5e1f63034a96a5a79cef6da412efd203"><div class="ttname"><a href="classtf_1_1TFProfObserver.html#a5e1f63034a96a5a79cef6da412efd203">tf::TFProfObserver::clear</a></div><div class="ttdeci">void clear()</div><div class="ttdoc">clear the timeline data </div><div class="ttdef"><b>Definition:</b> observer.hpp:379</div></div><div class="ttc" id="classtf_1_1ObserverInterface_html_acca2db87a08b084737c915d0e4a420d2"><div class="ttname"><a href="classtf_1_1ObserverInterface.html#acca2db87a08b084737c915d0e4a420d2">tf::ObserverInterface::set_up</a></div><div class="ttdeci">virtual void set_up(unsigned num_workers)=0</div><div class="ttdoc">constructor-like method to call when the executor observer is fully created </div></div><div class="ttc" id="classtf_1_1TFProfObserver_html_a59e82cb3f9b0ada38aa1ddea14f14d02"><div class="ttname"><a href="classtf_1_1TFProfObserver.html#a59e82cb3f9b0ada38aa1ddea14f14d02">tf::TFProfObserver::dump</a></div><div class="ttdeci">std::string dump() const</div><div class="ttdoc">dump the timelines in JSON to a std::string </div><div class="ttdef"><b>Definition:</b> observer.hpp:452</div></div><div class="ttc" id="duration_cast_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/chrono/duration/duration_cast.html">std::chrono::duration_cast</a></div><div class="ttdeci">T duration_cast(T... args)</div></div><div class="ttc" id="end_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/iterator/end.html">std::end</a></div><div class="ttdeci">T end(T... args)</div></div><div class="ttc" id="namespacetf_html"><div class="ttname"><a href="namespacetf.html">tf</a></div><div class="ttdef"><b>Definition:</b> error.hpp:9</div></div><div class="ttc" id="classtf_1_1ObserverInterface_html_adb6bd1daf9bb00fe6512829fbda29d36"><div class="ttname"><a href="classtf_1_1ObserverInterface.html#adb6bd1daf9bb00fe6512829fbda29d36">tf::ObserverInterface::on_exit</a></div><div class="ttdeci">virtual void on_exit(unsigned worker_id, TaskView task_view)=0</div><div class="ttdoc">method to call after a worker thread executed a closure </div></div><div class="ttc" id="classtf_1_1TFProfObserver_html"><div class="ttname"><a href="classtf_1_1TFProfObserver.html">tf::TFProfObserver</a></div><div class="ttdoc">observer designed based on taskflow board format </div><div class="ttdef"><b>Definition:</b> observer.hpp:265</div></div><div class="ttc" id="basic_string_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a></div></div><div class="ttc" id="basic_ostringstream_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/basic_ostringstream.html">std::ostringstream</a></div></div><div class="ttc" id="classtf_1_1ObserverInterface_html_a113c1720111dfa72ef4eec2a0937ab54"><div class="ttname"><a href="classtf_1_1ObserverInterface.html#a113c1720111dfa72ef4eec2a0937ab54">tf::ObserverInterface::on_entry</a></div><div class="ttdeci">virtual void on_entry(unsigned worker_id, TaskView task_view)=0</div><div class="ttdoc">method to call before a worker thread executes a closure </div></div><div class="ttc" id="classtf_1_1TaskView_html"><div class="ttname"><a href="classtf_1_1TaskView.html">tf::TaskView</a></div><div class="ttdoc">class to access task information from the observer interface </div><div class="ttdef"><b>Definition:</b> task.hpp:529</div></div><div class="ttc" id="classtf_1_1ChromeTracingObserver_html"><div class="ttname"><a href="classtf_1_1ChromeTracingObserver.html">tf::ChromeTracingObserver</a></div><div class="ttdoc">observer designed based on chrome tracing format </div><div class="ttdef"><b>Definition:</b> observer.hpp:69</div></div><div class="ttc" id="vector_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a></div></div><div class="ttc" id="classtf_1_1ChromeTracingObserver_html_a504effe13f9ab63d1a0df827c39cdc0d"><div class="ttname"><a href="classtf_1_1ChromeTracingObserver.html#a504effe13f9ab63d1a0df827c39cdc0d">tf::ChromeTracingObserver::dump</a></div><div class="ttdeci">std::string dump() const</div><div class="ttdoc">dump the timelines in JSON to a std::string </div><div class="ttdef"><b>Definition:</b> observer.hpp:239</div></div><div class="ttc" id="now_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/chrono/steady_clock/now.html">std::chrono::steady_clock::now</a></div><div class="ttdeci">T now(T... args)</div></div><div class="ttc" id="time_point_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/chrono/time_point.html">std::chrono::time_point< std::chrono::steady_clock ></a></div></div><div class="ttc" id="classtf_1_1ChromeTracingObserver_html_a80b781d1df8f31c2b73df55b36d2e104"><div class="ttname"><a href="classtf_1_1ChromeTracingObserver.html#a80b781d1df8f31c2b73df55b36d2e104">tf::ChromeTracingObserver::clear</a></div><div class="ttdeci">void clear()</div><div class="ttdoc">clear the timeline data </div><div class="ttdef"><b>Definition:</b> observer.hpp:176</div></div><div class="ttc" id="classtf_1_1TFProfObserver_html_a8b3b0bee8762af654cfebd2bb2ee98ed"><div class="ttname"><a href="classtf_1_1TFProfObserver.html#a8b3b0bee8762af654cfebd2bb2ee98ed">tf::TFProfObserver::num_tasks</a></div><div class="ttdeci">size_t num_tasks() const</div><div class="ttdoc">get the number of total tasks in the observer </div><div class="ttdef"><b>Definition:</b> observer.hpp:459</div></div><div class="ttc" id="classtf_1_1Executor_html"><div class="ttname"><a href="classtf_1_1Executor.html">tf::Executor</a></div><div class="ttdoc">execution interface for running a taskflow graph </div><div class="ttdef"><b>Definition:</b> executor.hpp:43</div></div><div class="ttc" id="classtf_1_1ObserverInterface_html"><div class="ttname"><a href="classtf_1_1ObserverInterface.html">tf::ObserverInterface</a></div><div class="ttdoc">The interface class for creating an executor observer. </div><div class="ttdef"><b>Definition:</b> observer.hpp:27</div></div><div class="ttc" id="basic_ostream_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::ostream</a></div></div><div class="ttc" id="classtf_1_1ObserverInterface_html_adfd71c3af3ae2ea4f41eed26c1b6f604"><div class="ttname"><a href="classtf_1_1ObserverInterface.html#adfd71c3af3ae2ea4f41eed26c1b6f604">tf::ObserverInterface::~ObserverInterface</a></div><div class="ttdeci">virtual ~ObserverInterface()=default</div><div class="ttdoc">virtual destructor </div></div></div><!-- fragment --></div><!-- contents --></div><!-- doc-content --><!-- start footer part --><div id="nav-path" class="navpath"><!-- id is needed for treeview function! --><ul><li class="navelem"><a class="el" href="dir_88dad41ea55ca2177e141d32a93e931c.html">taskflow</a></li><li class="navelem"><a class="el" href="dir_220cd4d9b8cb38c840b455d5d75c25bb.html">core</a></li><li class="navelem"><b>observer.hpp</b></li><li class="footer">Generated by<a href="http://www.doxygen.org/index.html"><img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.14 </li></ul></div></body></html>
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