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<div class="title">loop.hpp</div> </div>
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<a href="loop_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">// you may not use this file except in compliance with the License.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">// You may obtain a copy of the License at</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment">// distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment">// See the License for the specific language governing permissions and</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment">// limitations under the License</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;</div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#ifndef __PROCESS_LOOP_HPP__</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define __PROCESS_LOOP_HPP__</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="preprocessor">#include &lt;mutex&gt;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="defer_8hpp.html">process/defer.hpp</a>&gt;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="dispatch_8hpp.html">process/dispatch.hpp</a>&gt;</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="future_8hpp.html">process/future.hpp</a>&gt;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="owned_8hpp.html">process/owned.hpp</a>&gt;</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="3rdparty_2libprocess_2include_2process_2pid_8hpp.html">process/pid.hpp</a>&gt;</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="libprocess_2include_2process_2process_8hpp.html">process/process.hpp</a>&gt;</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceos.html#ae19e4161a51b86a1f330f3bf1dc75389">process</a> {</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="comment">// Provides an asynchronous &quot;loop&quot; abstraction. This abstraction is</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="comment">// helpful for code that would have synchronously been written as a</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="comment">// loop but asynchronously ends up being a recursive set of functions</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="comment">// which depending on the compiler may result in a stack overflow</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="comment">// (i.e., a compiler that can&#39;t do sufficient tail call optimization</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="comment">// may add stack frames for each recursive call).</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="comment">// The loop abstraction takes an optional PID `pid` and uses it as the</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="comment">// execution context to run the loop. The implementation does a</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="comment">// `defer` on this `pid` to &quot;pop&quot; the stack when it needs to</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;<span class="comment">// asynchronously recurse. This also lets callers synchronize</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;<span class="comment">// execution with other code dispatching and deferring using `pid`. If</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;<span class="comment">// `None` is passed for `pid` then no `defer` is done and the stack</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;<span class="comment">// will still &quot;pop&quot; but be restarted from the execution context</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="comment">// wherever the blocked future is completed. This is usually very safe</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;<span class="comment">// when that blocked future will be completed by the IO thread, but</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;<span class="comment">// should not be used if it&#39;s completed by another process (because</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;<span class="comment">// you&#39;ll block that process until the next time the loop blocks).</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;<span class="comment">// The two functions passed to the loop represent the loop &quot;iterate&quot;</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;<span class="comment">// step and the loop &quot;body&quot; step respectively. Each invocation of</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160;<span class="comment">// &quot;iterate&quot; returns the next value and the &quot;body&quot; returns whether or</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;<span class="comment">// not to continue looping (as well as any other processing necessary</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;<span class="comment">// of course). You can think of this synchronously as:</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;<span class="comment">// bool condition = true;</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;<span class="comment">// do {</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;<span class="comment">// condition = body(iterate());</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;<span class="comment">// } while (condition);</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;<span class="comment">// Asynchronously using recursion this might look like:</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;<span class="comment">// Future&lt;Nothing&gt; loop()</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;<span class="comment">// return iterate()</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;<span class="comment">// .then([](T t) {</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;<span class="comment">// return body(t)</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;<span class="comment">// .then([](bool condition) {</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;<span class="comment">// if (condition) {</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;<span class="comment">// return loop();</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;<span class="comment">// } else {</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;<span class="comment">// return Nothing();</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;<span class="comment">// });</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;<span class="comment">// });</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;<span class="comment">// And asynchronously using `pid` as the execution context:</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;<span class="comment">// Future&lt;Nothing&gt; loop()</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;<span class="comment">// return iterate()</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;<span class="comment">// .then(defer(pid, [](T t) {</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;<span class="comment">// return body(t)</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;<span class="comment">// .then(defer(pid, [](bool condition) {</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;<span class="comment">// if (condition) {</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;<span class="comment">// return loop();</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;<span class="comment">// } else {</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;<span class="comment">// return Nothing();</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;<span class="comment">// }));</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;<span class="comment">// }));</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;<span class="comment">// And now what this looks like using `loop`:</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;<span class="comment">// loop(pid,</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;<span class="comment">// []() {</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;<span class="comment">// return iterate();</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;<span class="comment">// },</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;<span class="comment">// [](T t) {</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;<span class="comment">// return body(t);</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;<span class="comment">// });</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;<span class="comment">// One difference between the `loop` version of the &quot;body&quot; versus the</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;<span class="comment">// other non-loop examples above is the return value is not `bool` or</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;<span class="comment">// `Future&lt;bool&gt;` but rather `ControlFlow&lt;V&gt;` or</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;<span class="comment">// `Future&lt;ControlFlow&lt;V&gt;&gt;`. This enables you to return values out of</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;<span class="comment">// the loop via a `Break(...)`, for example:</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;<span class="comment">// loop(pid,</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;<span class="comment">// []() {</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;<span class="comment">// return iterate();</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;<span class="comment">// },</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;<span class="comment">// [](T t) {</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160;<span class="comment">// if (finished(t)) {</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;<span class="comment">// return Break(SomeValue());</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;<span class="comment">// return Continue();</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160;<span class="comment">// });</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterate,</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; <span class="keyword">typename</span> Body,</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; <span class="keyword">typename</span> T = <span class="keyword">typename</span> <a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">internal::unwrap&lt;typename result_of&lt;Iterate()&gt;::type</a>&gt;<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a>, <span class="comment">// NOLINT(whitespace/line_length)</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; <span class="keyword">typename</span> CF = <span class="keyword">typename</span> <a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">internal::unwrap&lt;typename result_of&lt;Body(T)&gt;::type</a>&gt;<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a>, <span class="comment">// NOLINT(whitespace/line_length)</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; <span class="keyword">typename</span> V = <span class="keyword">typename</span> CF::ValueType&gt;</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160;Future&lt;V&gt; <a class="code" href="namespaceprocess.html#a59c192ee8ea5abbbee1642957f47c92a">loop</a>(<span class="keyword">const</span> <a class="code" href="classOption.html">Option&lt;UPID&gt;</a>&amp; pid, Iterate&amp;&amp; iterate, Body&amp;&amp; body);</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160;</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160;<span class="comment">// A helper for `loop` which creates a Process for us to provide an</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160;<span class="comment">// execution context for running the loop.</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterate,</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; <span class="keyword">typename</span> Body,</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; <span class="keyword">typename</span> T = <span class="keyword">typename</span> <a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">internal::unwrap&lt;typename result_of&lt;Iterate()&gt;::type</a>&gt;<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a>, <span class="comment">// NOLINT(whitespace/line_length)</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; <span class="keyword">typename</span> CF = <span class="keyword">typename</span> <a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">internal::unwrap&lt;typename result_of&lt;Body(T)&gt;::type</a>&gt;<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a>, <span class="comment">// NOLINT(whitespace/line_length)</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; <span class="keyword">typename</span> V = <span class="keyword">typename</span> CF::ValueType&gt;</div>
<div class="line"><a name="l00132"></a><span class="lineno"><a class="line" href="namespaceprocess.html#af4f4d3422eed6d82ea5af4a1a6e839a4"> 132</a></span>&#160;<a class="code" href="classprocess_1_1Future.html">Future&lt;V&gt;</a> <a class="code" href="namespaceprocess.html#a59c192ee8ea5abbbee1642957f47c92a">loop</a>(Iterate&amp;&amp; iterate, Body&amp;&amp; body)</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160;{</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <span class="comment">// Have libprocess own and free the new `ProcessBase`.</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; <a class="code" href="structprocess_1_1UPID.html">UPID</a> <a class="code" href="namespaceos.html#ae19e4161a51b86a1f330f3bf1dc75389">process</a> = <a class="code" href="namespaceprocess.html#aff22904a83567125d3b4d0d88e5a2270">spawn</a>(<span class="keyword">new</span> <a class="code" href="classprocess_1_1ProcessBase.html">ProcessBase</a>(), <span class="keyword">true</span>);</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160;</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; <span class="keywordflow">return</span> loop&lt;Iterate, Body, T, CF, V&gt;(</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; <a class="code" href="namespaceos.html#ae19e4161a51b86a1f330f3bf1dc75389">process</a>,</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; std::forward&lt;Iterate&gt;(iterate),</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; std::forward&lt;Body&gt;(body))</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; .onAny([=]() {</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; <a class="code" href="namespaceprocess.html#a20443908afa3212215166e26065349e5">terminate</a>(process);</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; <span class="comment">// NOTE: no need to `wait` or `delete` since the `spawn` above</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; <span class="comment">// put libprocess in control of garbage collection.</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; });</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;}</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160;</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160;<span class="comment">// Generic &quot;control flow&quot; construct that is leveraged by</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160;<span class="comment">// implementations such as `loop`. At a high-level a `ControlFlow`</span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160;<span class="comment">// represents some control flow statement such as `continue` or</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;<span class="comment">// `break`, however, these statements can both have values or be</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160;<span class="comment">// value-less (i.e., these are meant to be composed &quot;functionally&quot; so</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;<span class="comment">// the representation of `break` captures a value that &quot;exits the</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160;<span class="comment">// current function&quot; but the representation of `continue` does not).</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160;<span class="comment">// The pattern here is to define the type/representation of control</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160;<span class="comment">// flow statements within the `ControlFlow` class (e.g.,</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;<span class="comment">// `ControlFlow::Continue` and `ControlFlow::Break`) but also provide</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160;<span class="comment">// &quot;syntactic sugar&quot; to make it easier to use at the call site (e.g.,</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160;<span class="comment">// the functions `Continue()` and `Break(...)`).</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00163"></a><span class="lineno"><a class="line" href="classprocess_1_1ControlFlow.html"> 163</a></span>&#160;<span class="keyword">class </span><a class="code" href="classprocess_1_1ControlFlow.html">ControlFlow</a></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160;{</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00166"></a><span class="lineno"><a class="line" href="classprocess_1_1ControlFlow.html#a5ce1f085b8043fe8ac900ce9f63a0bde"> 166</a></span>&#160; <span class="keyword">using</span> <a class="code" href="classprocess_1_1ControlFlow.html#a5ce1f085b8043fe8ac900ce9f63a0bde">ValueType</a> = T;</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;</div>
<div class="line"><a name="l00168"></a><span class="lineno"><a class="line" href="classprocess_1_1ControlFlow.html#af212ef291f73ba2e7b37586a577a794b"> 168</a></span>&#160; <span class="keyword">enum class</span> <a class="code" href="classprocess_1_1ControlFlow.html#af212ef291f73ba2e7b37586a577a794b">Statement</a></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; {</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; <a class="code" href="classprocess_1_1ControlFlow.html#af212ef291f73ba2e7b37586a577a794ba2f453cfe638e57e27bb0c9512436111e">CONTINUE</a>,</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; <a class="code" href="classprocess_1_1ControlFlow.html#af212ef291f73ba2e7b37586a577a794ba14d6a3e0201f58bfe7c01e775973e80e">BREAK</a></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; };</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160;</div>
<div class="line"><a name="l00174"></a><span class="lineno"><a class="line" href="classprocess_1_1ControlFlow_1_1Continue.html"> 174</a></span>&#160; <span class="keyword">class </span><a class="code" href="classprocess_1_1ControlFlow_1_1Continue.html">Continue</a></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; {</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; <a class="code" href="classprocess_1_1ControlFlow_1_1Continue.html#a8713d1376ecc49068369632fdcee1b91">Continue</a>() = <span class="keywordflow">default</span>;</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160;</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> U&gt;</div>
<div class="line"><a name="l00180"></a><span class="lineno"><a class="line" href="classprocess_1_1ControlFlow_1_1Continue.html#a8e1e336f8fa06958501963292a31164f"> 180</a></span>&#160; <span class="keyword">operator</span> <a class="code" href="classprocess_1_1ControlFlow.html">ControlFlow&lt;U&gt;</a>() <span class="keyword">const</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; {</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; <span class="keywordflow">return</span> <a class="code" href="classprocess_1_1ControlFlow.html">ControlFlow&lt;U&gt;</a>(<a class="code" href="classprocess_1_1ControlFlow.html">ControlFlow&lt;U&gt;::Statement::CONTINUE</a>, <a class="code" href="structNone.html">None</a>());</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; }</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; };</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160;</div>
<div class="line"><a name="l00186"></a><span class="lineno"><a class="line" href="classprocess_1_1ControlFlow_1_1Break.html"> 186</a></span>&#160; <span class="keyword">class </span><a class="code" href="classprocess_1_1ControlFlow_1_1Break.html">Break</a></div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; {</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00189"></a><span class="lineno"><a class="line" href="classprocess_1_1ControlFlow_1_1Break.html#af7fb2876b55483e08e446e4206695eca"> 189</a></span>&#160; <a class="code" href="classprocess_1_1ControlFlow_1_1Break.html#af7fb2876b55483e08e446e4206695eca">Break</a>(T t) : t(std::move(t)) {}</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160;</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> U&gt;</div>
<div class="line"><a name="l00192"></a><span class="lineno"><a class="line" href="classprocess_1_1ControlFlow_1_1Break.html#ae47dc27fa4845951a7088286131686e0"> 192</a></span>&#160; <span class="keyword">operator</span> <a class="code" href="classprocess_1_1ControlFlow.html">ControlFlow&lt;U&gt;</a>() <span class="keyword">const</span> &amp;</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; {</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; <span class="keywordflow">return</span> <a class="code" href="classprocess_1_1ControlFlow.html">ControlFlow&lt;U&gt;</a>(<a class="code" href="classprocess_1_1ControlFlow.html">ControlFlow&lt;U&gt;::Statement::BREAK</a>, t);</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; }</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160;</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> U&gt;</div>
<div class="line"><a name="l00198"></a><span class="lineno"><a class="line" href="classprocess_1_1ControlFlow_1_1Break.html#afcbd83a411d73d75ba2fc300aa1b20f4"> 198</a></span>&#160; <span class="keyword">operator</span> <a class="code" href="classprocess_1_1ControlFlow.html">ControlFlow&lt;U&gt;</a>() &amp;&amp;</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; {</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; <span class="keywordflow">return</span> <a class="code" href="classprocess_1_1ControlFlow.html">ControlFlow&lt;U&gt;</a>(<a class="code" href="classprocess_1_1ControlFlow.html">ControlFlow&lt;U&gt;::Statement::BREAK</a>, std::move(t));</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; }</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160;</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; T t;</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; };</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160;</div>
<div class="line"><a name="l00207"></a><span class="lineno"><a class="line" href="classprocess_1_1ControlFlow.html#ad8f5968ae93a1c00cfd67964c7895260"> 207</a></span>&#160; <a class="code" href="classprocess_1_1ControlFlow.html#ad8f5968ae93a1c00cfd67964c7895260">ControlFlow</a>(<a class="code" href="classprocess_1_1ControlFlow.html#af212ef291f73ba2e7b37586a577a794b">Statement</a> s, <a class="code" href="classOption.html">Option&lt;T&gt;</a> t) : s(s), t(std::move(t)) {}</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160;</div>
<div class="line"><a name="l00209"></a><span class="lineno"><a class="line" href="classprocess_1_1ControlFlow.html#a34752a25284d038dc5d4d9e551424cfe"> 209</a></span>&#160; <a class="code" href="classprocess_1_1ControlFlow.html#af212ef291f73ba2e7b37586a577a794b">Statement</a> <a class="code" href="classprocess_1_1ControlFlow.html#a34752a25284d038dc5d4d9e551424cfe">statement</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> s; }</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160;</div>
<div class="line"><a name="l00211"></a><span class="lineno"><a class="line" href="classprocess_1_1ControlFlow.html#a5c21809a15f9efe012e30d1a1cf05c3a"> 211</a></span>&#160; T&amp; <a class="code" href="classprocess_1_1ControlFlow.html#a5c21809a15f9efe012e30d1a1cf05c3a">value</a>() &amp; { <span class="keywordflow">return</span> t.get(); }</div>
<div class="line"><a name="l00212"></a><span class="lineno"><a class="line" href="classprocess_1_1ControlFlow.html#ad0fbad53169fc7766d61a69393ac14bc"> 212</a></span>&#160; <span class="keyword">const</span> T&amp; <a class="code" href="classprocess_1_1ControlFlow.html#ad0fbad53169fc7766d61a69393ac14bc">value</a>() const &amp; { <span class="keywordflow">return</span> t.get(); }</div>
<div class="line"><a name="l00213"></a><span class="lineno"><a class="line" href="classprocess_1_1ControlFlow.html#a3a15eba61473df457b0ac4cbaddd21ed"> 213</a></span>&#160; T&amp;&amp; <a class="code" href="classprocess_1_1ControlFlow.html#a3a15eba61473df457b0ac4cbaddd21ed">value</a>() &amp;&amp; { <span class="keywordflow">return</span> t.get(); }</div>
<div class="line"><a name="l00214"></a><span class="lineno"><a class="line" href="classprocess_1_1ControlFlow.html#a9fa0744c29d7bffd54f10aea580ba187"> 214</a></span>&#160; <span class="keyword">const</span> T&amp;&amp; <a class="code" href="classprocess_1_1ControlFlow.html#a9fa0744c29d7bffd54f10aea580ba187">value</a>() const &amp;&amp; { <span class="keywordflow">return</span> t.get(); }</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160;</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; <a class="code" href="classprocess_1_1ControlFlow.html#af212ef291f73ba2e7b37586a577a794b">Statement</a> s;</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160; <a class="code" href="classOption.html">Option&lt;T&gt;</a> t;</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160;};</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160;</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160;</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160;<span class="comment">// Provides &quot;syntactic sugar&quot; for creating a `ControlFlow::Continue`.</span></div>
<div class="line"><a name="l00223"></a><span class="lineno"><a class="line" href="structprocess_1_1Continue.html"> 223</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structprocess_1_1Continue.html">Continue</a></div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160;{</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160; <a class="code" href="structprocess_1_1Continue.html#a961eaa662b867c93c185e9078d192112">Continue</a>() = <span class="keywordflow">default</span>;</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160;</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00228"></a><span class="lineno"><a class="line" href="structprocess_1_1Continue.html#afa3c54c8941d6e85360a9ec8e26965ef"> 228</a></span>&#160; <span class="keyword">operator</span> <a class="code" href="classprocess_1_1ControlFlow.html">ControlFlow&lt;T&gt;</a>() <span class="keyword">const</span></div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160; {</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160; <span class="keywordflow">return</span> <span class="keyword">typename</span> <a class="code" href="classprocess_1_1ControlFlow_1_1Continue.html">ControlFlow&lt;T&gt;::Continue</a>();</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160; }</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160;};</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>&#160;</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160;</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160;<span class="comment">// Provides &quot;syntactic sugar&quot; for creating a `ControlFlow::Break`.</span></div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00237"></a><span class="lineno"><a class="line" href="namespaceprocess.html#a4beae62da50c26c6cb8afd14e385d0c8"> 237</a></span>&#160;<span class="keyword">typename</span> <a class="code" href="classprocess_1_1ControlFlow.html">ControlFlow&lt;typename std::decay&lt;T&gt;::type</a>&gt;<a class="code" href="namespaceprocess.html#a4beae62da50c26c6cb8afd14e385d0c8">::Break</a> <a class="code" href="namespaceprocess.html#a4beae62da50c26c6cb8afd14e385d0c8">Break</a>(T&amp;&amp; t)</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160;{</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160; <span class="keywordflow">return</span> <span class="keyword">typename</span> <a class="code" href="classprocess_1_1ControlFlow.html">ControlFlow&lt;typename std::decay&lt;T&gt;::type</a>&gt;<a class="code" href="namespaceprocess.html#a4beae62da50c26c6cb8afd14e385d0c8">::Break</a>(</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160; std::forward&lt;T&gt;(t));</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160;}</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160;</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160;</div>
<div class="line"><a name="l00244"></a><span class="lineno"><a class="line" href="namespaceprocess.html#a7a61f12f614ea8c61821e61682c4bfb9"> 244</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="classprocess_1_1ControlFlow_1_1Break.html">ControlFlow&lt;Nothing&gt;::Break</a> <a class="code" href="namespaceprocess.html#a4beae62da50c26c6cb8afd14e385d0c8">Break</a>()</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160;{</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceprocess.html#a4beae62da50c26c6cb8afd14e385d0c8">ControlFlow&lt;Nothing&gt;::Break</a>(<a class="code" href="structNothing.html">Nothing</a>());</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160;}</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160;</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160;</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&#160;<span class="keyword">namespace </span>internal {</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160;</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterate, <span class="keyword">typename</span> Body, <span class="keyword">typename</span> T, <span class="keyword">typename</span> R&gt;</div>
<div class="line"><a name="l00253"></a><span class="lineno"><a class="line" href="classprocess_1_1internal_1_1Loop.html"> 253</a></span>&#160;<span class="keyword">class </span><a class="code" href="classprocess_1_1internal_1_1Loop.html">Loop</a> : <span class="keyword">public</span> std::enable_shared_from_this&lt;Loop&lt;Iterate, Body, T, R&gt;&gt;</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>&#160;{</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterate_, <span class="keyword">typename</span> Body_&gt;</div>
<div class="line"><a name="l00257"></a><span class="lineno"><a class="line" href="classprocess_1_1internal_1_1Loop.html#a4067cc276cd8152074a7094acf9ca451"> 257</a></span>&#160; <span class="keyword">static</span> std::shared_ptr&lt;Loop&gt; <a class="code" href="classprocess_1_1internal_1_1Loop.html#a4067cc276cd8152074a7094acf9ca451">create</a>(</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#160; <span class="keyword">const</span> <a class="code" href="classOption.html">Option&lt;UPID&gt;</a>&amp; pid,</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>&#160; Iterate_&amp;&amp; iterate,</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160; Body_&amp;&amp; body)</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160; {</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160; <span class="keywordflow">return</span> std::shared_ptr&lt;Loop&gt;(</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160; <span class="keyword">new</span> <a class="code" href="classprocess_1_1internal_1_1Loop.html#a077dc66e82c758d8b82dda11fc530d72">Loop</a>(</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>&#160; pid,</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160; std::forward&lt;Iterate_&gt;(iterate),</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160; std::forward&lt;Body_&gt;(body)));</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>&#160; }</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160;</div>
<div class="line"><a name="l00269"></a><span class="lineno"><a class="line" href="classprocess_1_1internal_1_1Loop.html#a9923c05dd6d27f9ec0c61d28a5387641"> 269</a></span>&#160; std::shared_ptr&lt;Loop&gt; <a class="code" href="classprocess_1_1internal_1_1Loop.html#a9923c05dd6d27f9ec0c61d28a5387641">shared</a>()</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>&#160; {</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>&#160; <span class="comment">// Must fully specify `shared_from_this` because we&#39;re templated.</span></div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>&#160; <span class="keywordflow">return</span> std::enable_shared_from_this&lt;Loop&gt;::shared_from_this();</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>&#160; }</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>&#160;</div>
<div class="line"><a name="l00275"></a><span class="lineno"><a class="line" href="classprocess_1_1internal_1_1Loop.html#a39870dcf4e2432a29569a658ec0e33be"> 275</a></span>&#160; std::weak_ptr&lt;Loop&gt; <a class="code" href="classprocess_1_1internal_1_1Loop.html#a39870dcf4e2432a29569a658ec0e33be">weak</a>()</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>&#160; {</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>&#160; <span class="keywordflow">return</span> std::weak_ptr&lt;Loop&gt;(<a class="code" href="classprocess_1_1internal_1_1Loop.html#a9923c05dd6d27f9ec0c61d28a5387641">shared</a>());</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>&#160; }</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>&#160;</div>
<div class="line"><a name="l00280"></a><span class="lineno"><a class="line" href="classprocess_1_1internal_1_1Loop.html#a4743d5b323d0d9923cd83fd1abeda9c3"> 280</a></span>&#160; <a class="code" href="classprocess_1_1Future.html">Future&lt;R&gt;</a> <a class="code" href="classprocess_1_1internal_1_1Loop.html#a4743d5b323d0d9923cd83fd1abeda9c3">start</a>()</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>&#160; {</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>&#160; <span class="keyword">auto</span> <span class="keyword">self</span> = <a class="code" href="classprocess_1_1internal_1_1Loop.html#a9923c05dd6d27f9ec0c61d28a5387641">shared</a>();</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>&#160; <span class="keyword">auto</span> weak_self = <a class="code" href="classprocess_1_1internal_1_1Loop.html#a39870dcf4e2432a29569a658ec0e33be">weak</a>();</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>&#160;</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>&#160; <span class="comment">// Propagating discards:</span></div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>&#160; <span class="comment">//</span></div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>&#160; <span class="comment">// When the caller does a discard we need to propagate it to</span></div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>&#160; <span class="comment">// either the future returned from `iterate` or the future</span></div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>&#160; <span class="comment">// returned from `body`. One easy way to do this would be to add</span></div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>&#160; <span class="comment">// an `onAny` callback for every future returned from `iterate`</span></div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>&#160; <span class="comment">// and `body`, but that would be a slow memory leak that would</span></div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>&#160; <span class="comment">// grow over time, especially if the loop was actually</span></div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>&#160; <span class="comment">// infinite. Instead, we capture the current future that needs to</span></div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>&#160; <span class="comment">// be discarded within a `discard` function that we&#39;ll invoke when</span></div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>&#160; <span class="comment">// we get a discard. Because there is a race setting the `discard`</span></div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>&#160; <span class="comment">// function and reading it out to invoke we have to synchronize</span></div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>&#160; <span class="comment">// access using a mutex. An alternative strategy would be to use</span></div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>&#160; <span class="comment">// something like `atomic_load` and `atomic_store` with</span></div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>&#160; <span class="comment">// `shared_ptr` so that we can swap the current future(s)</span></div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>&#160; <span class="comment">// atomically.</span></div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>&#160; promise.<a class="code" href="classprocess_1_1Promise.html#a8aef752d6c90cb11e58e3166b7592ef1">future</a>().<a class="code" href="classprocess_1_1Future.html#a1b80bf321358be44880d9c6bae5d9a2d">onDiscard</a>([weak_self]() {</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>&#160; <span class="keyword">auto</span> <span class="keyword">self</span> = weak_self.lock();</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>&#160; <span class="keywordflow">if</span> (<span class="keyword">self</span>) {</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>&#160; <span class="comment">// We need to make a copy of the current `discard` function so</span></div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>&#160; <span class="comment">// that we can invoke it outside of the `synchronized` block</span></div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>&#160; <span class="comment">// in the event that discarding invokes causes the `onAny`</span></div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>&#160; <span class="comment">// callbacks that we have added in `run` to execute which may</span></div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>&#160; <span class="comment">// deadlock attempting to re-acquire `mutex`!</span></div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>&#160; std::function&lt;void()&gt; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a> = []() {};</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>&#160; <span class="keyword">synchronized</span> (<span class="keyword">self</span>-&gt;mutex) {</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>&#160; f = <span class="keyword">self</span>-&gt;discard;</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>&#160; }</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>&#160; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>();</div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>&#160; }</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>&#160; });</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>&#160;</div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>&#160; <span class="keywordflow">if</span> (pid.isSome()) {</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>&#160; <span class="comment">// Start the loop using `pid` as the execution context.</span></div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>&#160; <a class="code" href="namespaceprocess_1_1internal.html#af41e327161ef61c79f5eb864fc2af03d">dispatch</a>(pid.get(), [<span class="keyword">self</span>]() {</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>&#160; <span class="keyword">self</span>-&gt;run(self-&gt;iterate());</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>&#160; });</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>&#160; <a class="code" href="classprocess_1_1internal_1_1Loop.html#a11417f29be6ae721ee9331b0ccbf16e4">run</a>(iterate());</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>&#160; }</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>&#160;</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>&#160; <span class="keywordflow">return</span> promise.<a class="code" href="classprocess_1_1Promise.html#a8aef752d6c90cb11e58e3166b7592ef1">future</a>();</div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>&#160; }</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>&#160;</div>
<div class="line"><a name="l00329"></a><span class="lineno"><a class="line" href="classprocess_1_1internal_1_1Loop.html#a11417f29be6ae721ee9331b0ccbf16e4"> 329</a></span>&#160; <span class="keywordtype">void</span> <a class="code" href="classprocess_1_1internal_1_1Loop.html#a11417f29be6ae721ee9331b0ccbf16e4">run</a>(<a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a> next)</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>&#160; {</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>&#160; <span class="keyword">auto</span> <span class="keyword">self</span> = <a class="code" href="classprocess_1_1internal_1_1Loop.html#a9923c05dd6d27f9ec0c61d28a5387641">shared</a>();</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>&#160;</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>&#160; <span class="comment">// Reset `discard` so that we&#39;re not delaying cleanup of any</span></div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>&#160; <span class="comment">// captured futures longer than necessary.</span></div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>&#160; <span class="comment">//</span></div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>&#160; <span class="comment">// TODO(benh): Use `WeakFuture` in `discard` functions instead.</span></div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>&#160; <span class="keyword">synchronized</span> (mutex) {</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>&#160; discard = []() {};</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>&#160; }</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>&#160;</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>&#160; <span class="keywordflow">while</span> (next.<a class="code" href="classprocess_1_1Future.html#a68f241961e700d0cecf982d9cc0043d7">isReady</a>()) {</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>&#160; <a class="code" href="classprocess_1_1Future.html">Future&lt;ControlFlow&lt;R&gt;</a>&gt; flow = body(next.<a class="code" href="classprocess_1_1Future.html#aa78977d3b585a5f5ccd682c1e9e2ddc4">get</a>());</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>&#160; <span class="keywordflow">if</span> (flow.<a class="code" href="classprocess_1_1Future.html#a68f241961e700d0cecf982d9cc0043d7">isReady</a>()) {</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>&#160; <span class="keywordflow">switch</span> (flow-&gt;statement()) {</div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>&#160; <span class="keywordflow">case</span> <a class="code" href="classprocess_1_1ControlFlow.html">ControlFlow&lt;R&gt;::Statement::CONTINUE</a>: {</div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>&#160; next = iterate();</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>&#160; <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>&#160; }</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>&#160; <span class="keywordflow">case</span> <a class="code" href="classprocess_1_1ControlFlow.html">ControlFlow&lt;R&gt;::Statement::BREAK</a>: {</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>&#160; promise.<a class="code" href="classprocess_1_1Promise.html#a989b8dfa7eb2633de3f0f25ac2b87943">set</a>(flow-&gt;value());</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>&#160; <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>&#160; }</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>&#160; }</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>&#160; <span class="keyword">auto</span> continuation = [<span class="keyword">self</span>](<span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;ControlFlow&lt;R&gt;</a>&gt;&amp; flow) {</div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>&#160; <span class="keywordflow">if</span> (flow.<a class="code" href="classprocess_1_1Future.html#a68f241961e700d0cecf982d9cc0043d7">isReady</a>()) {</div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>&#160; <span class="keywordflow">switch</span> (flow-&gt;statement()) {</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>&#160; <span class="keywordflow">case</span> <a class="code" href="classprocess_1_1ControlFlow.html">ControlFlow&lt;R&gt;::Statement::CONTINUE</a>: {</div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>&#160; <span class="keyword">self</span>-&gt;run(self-&gt;iterate());</div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>&#160; }</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>&#160; <span class="keywordflow">case</span> <a class="code" href="classprocess_1_1ControlFlow.html">ControlFlow&lt;R&gt;::Statement::BREAK</a>: {</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>&#160; <span class="keyword">self</span>-&gt;promise.set(flow-&gt;value());</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>&#160; }</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>&#160; }</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>&#160; } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (flow.<a class="code" href="classprocess_1_1Future.html#a493227e57f8848e37777b89c0f81e2ec">isFailed</a>()) {</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>&#160; <span class="keyword">self</span>-&gt;promise.fail(flow.<a class="code" href="classprocess_1_1Future.html#ae649c56b07f44c05e4b7aa3620133ff9">failure</a>());</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>&#160; } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (flow.<a class="code" href="classprocess_1_1Future.html#abc89036db733a417b7b383b091efaf3c">isDiscarded</a>()) {</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>&#160; <span class="keyword">self</span>-&gt;promise.discard();</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>&#160; }</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>&#160; };</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>&#160;</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>&#160; <span class="keywordflow">if</span> (pid.isSome()) {</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>&#160; flow.<a class="code" href="classprocess_1_1Future.html#a71bde220aed3c725cef2040f63adf42a">onAny</a>(<a class="code" href="namespaceprocess.html#a8b27a2ef76eb133bf0ce7a5eea4fb77c">defer</a>(pid.get(), continuation));</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>&#160; flow.<a class="code" href="classprocess_1_1Future.html#a71bde220aed3c725cef2040f63adf42a">onAny</a>(continuation);</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>&#160; }</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>&#160;</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>&#160; <span class="keywordflow">if</span> (!promise.<a class="code" href="classprocess_1_1Promise.html#a8aef752d6c90cb11e58e3166b7592ef1">future</a>().<a class="code" href="classprocess_1_1Future.html#a18f97963e0636071b54401b200fedfc2">hasDiscard</a>()) {</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>&#160; <span class="keyword">synchronized</span> (mutex) {</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>&#160; <span class="keyword">self</span>-&gt;discard = [=]() <span class="keyword">mutable</span> { flow.<a class="code" href="classprocess_1_1Future.html#a4012f3faa6191fc13874dca62c14ced0">discard</a>(); };</div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>&#160; }</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>&#160; }</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>&#160;</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>&#160; <span class="comment">// There&#39;s a race between when a discard occurs and the</span></div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>&#160; <span class="comment">// `discard` function gets invoked and therefore we must</span></div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>&#160; <span class="comment">// explicitly always do a discard. In addition, after a</span></div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>&#160; <span class="comment">// discard occurs we&#39;ll need to explicitly do discards for</span></div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>&#160; <span class="comment">// each new future that blocks.</span></div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>&#160; <span class="keywordflow">if</span> (promise.<a class="code" href="classprocess_1_1Promise.html#a8aef752d6c90cb11e58e3166b7592ef1">future</a>().<a class="code" href="classprocess_1_1Future.html#a18f97963e0636071b54401b200fedfc2">hasDiscard</a>()) {</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>&#160; flow.<a class="code" href="classprocess_1_1Future.html#a4012f3faa6191fc13874dca62c14ced0">discard</a>();</div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>&#160; }</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>&#160;</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>&#160; <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>&#160; }</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>&#160; }</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>&#160;</div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>&#160; <span class="keyword">auto</span> continuation = [<span class="keyword">self</span>](<span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; next) {</div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>&#160; <span class="keywordflow">if</span> (next.<a class="code" href="classprocess_1_1Future.html#a68f241961e700d0cecf982d9cc0043d7">isReady</a>()) {</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>&#160; <span class="keyword">self</span>-&gt;run(next);</div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>&#160; } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (next.<a class="code" href="classprocess_1_1Future.html#a493227e57f8848e37777b89c0f81e2ec">isFailed</a>()) {</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>&#160; <span class="keyword">self</span>-&gt;promise.fail(next.<a class="code" href="classprocess_1_1Future.html#ae649c56b07f44c05e4b7aa3620133ff9">failure</a>());</div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>&#160; } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (next.<a class="code" href="classprocess_1_1Future.html#abc89036db733a417b7b383b091efaf3c">isDiscarded</a>()) {</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>&#160; <span class="keyword">self</span>-&gt;promise.discard();</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>&#160; }</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>&#160; };</div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>&#160;</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>&#160; <span class="keywordflow">if</span> (pid.isSome()) {</div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>&#160; next.<a class="code" href="classprocess_1_1Future.html#a71bde220aed3c725cef2040f63adf42a">onAny</a>(<a class="code" href="namespaceprocess.html#a8b27a2ef76eb133bf0ce7a5eea4fb77c">defer</a>(pid.get(), continuation));</div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>&#160; next.<a class="code" href="classprocess_1_1Future.html#a71bde220aed3c725cef2040f63adf42a">onAny</a>(continuation);</div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>&#160; }</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>&#160;</div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>&#160; <span class="keywordflow">if</span> (!promise.<a class="code" href="classprocess_1_1Promise.html#a8aef752d6c90cb11e58e3166b7592ef1">future</a>().<a class="code" href="classprocess_1_1Future.html#a18f97963e0636071b54401b200fedfc2">hasDiscard</a>()) {</div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>&#160; <span class="keyword">synchronized</span> (mutex) {</div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>&#160; discard = [=]() <span class="keyword">mutable</span> { next.<a class="code" href="classprocess_1_1Future.html#a4012f3faa6191fc13874dca62c14ced0">discard</a>(); };</div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>&#160; }</div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>&#160; }</div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>&#160;</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>&#160; <span class="comment">// See comment above as to why we need to explicitly discard</span></div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>&#160; <span class="comment">// regardless of the path the if statement took above.</span></div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>&#160; <span class="keywordflow">if</span> (promise.<a class="code" href="classprocess_1_1Promise.html#a8aef752d6c90cb11e58e3166b7592ef1">future</a>().<a class="code" href="classprocess_1_1Future.html#a18f97963e0636071b54401b200fedfc2">hasDiscard</a>()) {</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>&#160; next.<a class="code" href="classprocess_1_1Future.html#a4012f3faa6191fc13874dca62c14ced0">discard</a>();</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>&#160; }</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>&#160; }</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>&#160;</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>&#160;<span class="keyword">protected</span>:</div>
<div class="line"><a name="l00429"></a><span class="lineno"><a class="line" href="classprocess_1_1internal_1_1Loop.html#a077dc66e82c758d8b82dda11fc530d72"> 429</a></span>&#160; <a class="code" href="classprocess_1_1internal_1_1Loop.html#a077dc66e82c758d8b82dda11fc530d72">Loop</a>(<span class="keyword">const</span> <a class="code" href="classOption.html">Option&lt;UPID&gt;</a>&amp; pid, <span class="keyword">const</span> Iterate&amp; iterate, <span class="keyword">const</span> Body&amp; body)</div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>&#160; : pid(pid), iterate(iterate), body(body) {}</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>&#160;</div>
<div class="line"><a name="l00432"></a><span class="lineno"><a class="line" href="classprocess_1_1internal_1_1Loop.html#a0c7b83e40e88e5d40ad29802be101dfd"> 432</a></span>&#160; <a class="code" href="classprocess_1_1internal_1_1Loop.html#a0c7b83e40e88e5d40ad29802be101dfd">Loop</a>(<span class="keyword">const</span> <a class="code" href="classOption.html">Option&lt;UPID&gt;</a>&amp; pid, Iterate&amp;&amp; iterate, Body&amp;&amp; body)</div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>&#160; : pid(pid), iterate(std::move(iterate)), body(std::move(body)) {}</div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>&#160;</div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>&#160; <span class="keyword">const</span> <a class="code" href="classOption.html">Option&lt;UPID&gt;</a> pid;</div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>&#160; Iterate iterate;</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>&#160; Body body;</div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>&#160; <a class="code" href="classprocess_1_1Promise.html">Promise&lt;R&gt;</a> promise;</div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>&#160;</div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>&#160; <span class="comment">// In order to discard the loop safely we capture the future that</span></div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>&#160; <span class="comment">// needs to be discarded within the `discard` function and reading</span></div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>&#160; <span class="comment">// and writing that function with a mutex.</span></div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>&#160; std::mutex mutex;</div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>&#160; std::function&lt;void()&gt; discard = []() {};</div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>&#160;};</div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>&#160;</div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>&#160;} <span class="comment">// namespace internal {</span></div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>&#160;</div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>&#160;</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterate, <span class="keyword">typename</span> Body, <span class="keyword">typename</span> T, <span class="keyword">typename</span> CF, <span class="keyword">typename</span> V&gt;</div>
<div class="line"><a name="l00452"></a><span class="lineno"><a class="line" href="namespaceprocess.html#a59c192ee8ea5abbbee1642957f47c92a"> 452</a></span>&#160;<a class="code" href="classprocess_1_1Future.html">Future&lt;V&gt;</a> <a class="code" href="namespaceprocess.html#a59c192ee8ea5abbbee1642957f47c92a">loop</a>(<span class="keyword">const</span> <a class="code" href="classOption.html">Option&lt;UPID&gt;</a>&amp; pid, Iterate&amp;&amp; iterate, Body&amp;&amp; body)</div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>&#160;{</div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>&#160; <span class="keyword">using</span> Loop = <a class="code" href="classprocess_1_1internal_1_1Loop.html">internal::Loop</a>&lt;</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>&#160; <span class="keyword">typename</span> <a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">std::decay&lt;Iterate&gt;::type</a>,</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>&#160; <span class="keyword">typename</span> <a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">std::decay&lt;Body&gt;::type</a>,</div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>&#160; T,</div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>&#160; V&gt;;</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>&#160;</div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>&#160; std::shared_ptr&lt;Loop&gt; <a class="code" href="namespaceprocess.html#a59c192ee8ea5abbbee1642957f47c92a">loop</a> = <a class="code" href="namespacecgroups.html#a2ecc89636706df947027a4c3c2100fbe">Loop::create</a>(</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>&#160; pid,</div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>&#160; std::forward&lt;Iterate&gt;(iterate),</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>&#160; std::forward&lt;Body&gt;(body));</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>&#160;</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>&#160; <span class="keywordflow">return</span> loop-&gt;start();</div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>&#160;}</div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>&#160;</div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>&#160;} <span class="comment">// namespace process {</span></div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>&#160;</div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>&#160;<span class="preprocessor">#endif // __PROCESS_LOOP_HPP__</span></div>
<div class="ttc" id="classprocess_1_1ControlFlow_html_ad8f5968ae93a1c00cfd67964c7895260"><div class="ttname"><a href="classprocess_1_1ControlFlow.html#ad8f5968ae93a1c00cfd67964c7895260">process::ControlFlow::ControlFlow</a></div><div class="ttdeci">ControlFlow(Statement s, Option&lt; T &gt; t)</div><div class="ttdef"><b>Definition:</b> loop.hpp:207</div></div>
<div class="ttc" id="classprocess_1_1Future_html_a68f241961e700d0cecf982d9cc0043d7"><div class="ttname"><a href="classprocess_1_1Future.html#a68f241961e700d0cecf982d9cc0043d7">process::Future::isReady</a></div><div class="ttdeci">bool isReady() const </div><div class="ttdef"><b>Definition:</b> future.hpp:1067</div></div>
<div class="ttc" id="classprocess_1_1ControlFlow_1_1Continue_html_a8713d1376ecc49068369632fdcee1b91"><div class="ttname"><a href="classprocess_1_1ControlFlow_1_1Continue.html#a8713d1376ecc49068369632fdcee1b91">process::ControlFlow::Continue::Continue</a></div><div class="ttdeci">Continue()=default</div></div>
<div class="ttc" id="classprocess_1_1internal_1_1Loop_html"><div class="ttname"><a href="classprocess_1_1internal_1_1Loop.html">process::internal::Loop</a></div><div class="ttdef"><b>Definition:</b> loop.hpp:253</div></div>
<div class="ttc" id="structNothing_html"><div class="ttname"><a href="structNothing.html">Nothing</a></div><div class="ttdef"><b>Definition:</b> nothing.hpp:16</div></div>
<div class="ttc" id="classprocess_1_1ControlFlow_html_af212ef291f73ba2e7b37586a577a794ba14d6a3e0201f58bfe7c01e775973e80e"><div class="ttname"><a href="classprocess_1_1ControlFlow.html#af212ef291f73ba2e7b37586a577a794ba14d6a3e0201f58bfe7c01e775973e80e">process::ControlFlow::Statement::BREAK</a></div></div>
<div class="ttc" id="classOption_html"><div class="ttname"><a href="classOption.html">Option</a></div><div class="ttdef"><b>Definition:</b> option.hpp:24</div></div>
<div class="ttc" id="namespaceprocess_html_a62d5333e8ec1817c249cf83e15d568b4"><div class="ttname"><a href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">process::f</a></div><div class="ttdeci">F &amp;&amp; f</div><div class="ttdef"><b>Definition:</b> defer.hpp:239</div></div>
<div class="ttc" id="classprocess_1_1internal_1_1Loop_html_a4067cc276cd8152074a7094acf9ca451"><div class="ttname"><a href="classprocess_1_1internal_1_1Loop.html#a4067cc276cd8152074a7094acf9ca451">process::internal::Loop::create</a></div><div class="ttdeci">static std::shared_ptr&lt; Loop &gt; create(const Option&lt; UPID &gt; &amp;pid, Iterate_ &amp;&amp;iterate, Body_ &amp;&amp;body)</div><div class="ttdef"><b>Definition:</b> loop.hpp:257</div></div>
<div class="ttc" id="classprocess_1_1Future_html_aa78977d3b585a5f5ccd682c1e9e2ddc4"><div class="ttname"><a href="classprocess_1_1Future.html#aa78977d3b585a5f5ccd682c1e9e2ddc4">process::Future::get</a></div><div class="ttdeci">const T &amp; get() const </div><div class="ttdef"><b>Definition:</b> future.hpp:1139</div></div>
<div class="ttc" id="classprocess_1_1Promise_html_a989b8dfa7eb2633de3f0f25ac2b87943"><div class="ttname"><a href="classprocess_1_1Promise.html#a989b8dfa7eb2633de3f0f25ac2b87943">process::Promise::set</a></div><div class="ttdeci">bool set(const T &amp;_t)</div><div class="ttdef"><b>Definition:</b> future.hpp:697</div></div>
<div class="ttc" id="namespaceprocess_html_a4beae62da50c26c6cb8afd14e385d0c8"><div class="ttname"><a href="namespaceprocess.html#a4beae62da50c26c6cb8afd14e385d0c8">process::Break</a></div><div class="ttdeci">ControlFlow&lt; typename std::decay&lt; T &gt;::type &gt;::Break Break(T &amp;&amp;t)</div><div class="ttdef"><b>Definition:</b> loop.hpp:237</div></div>
<div class="ttc" id="structprocess_1_1Continue_html_a961eaa662b867c93c185e9078d192112"><div class="ttname"><a href="structprocess_1_1Continue.html#a961eaa662b867c93c185e9078d192112">process::Continue::Continue</a></div><div class="ttdeci">Continue()=default</div></div>
<div class="ttc" id="namespaceprocess_1_1internal_html_af41e327161ef61c79f5eb864fc2af03d"><div class="ttname"><a href="namespaceprocess_1_1internal.html#af41e327161ef61c79f5eb864fc2af03d">process::internal::dispatch</a></div><div class="ttdeci">void dispatch(const UPID &amp;pid, const std::shared_ptr&lt; std::function&lt; void(ProcessBase *)&gt;&gt; &amp;f, const Option&lt; const std::type_info * &gt; &amp;functionType=None())</div></div>
<div class="ttc" id="classprocess_1_1ControlFlow_html_a34752a25284d038dc5d4d9e551424cfe"><div class="ttname"><a href="classprocess_1_1ControlFlow.html#a34752a25284d038dc5d4d9e551424cfe">process::ControlFlow::statement</a></div><div class="ttdeci">Statement statement() const </div><div class="ttdef"><b>Definition:</b> loop.hpp:209</div></div>
<div class="ttc" id="classprocess_1_1Future_html_a1b80bf321358be44880d9c6bae5d9a2d"><div class="ttname"><a href="classprocess_1_1Future.html#a1b80bf321358be44880d9c6bae5d9a2d">process::Future::onDiscard</a></div><div class="ttdeci">const Future&lt; T &gt; &amp; onDiscard(DiscardCallback &amp;&amp;callback) const </div><div class="ttdef"><b>Definition:</b> future.hpp:1177</div></div>
<div class="ttc" id="classprocess_1_1internal_1_1Loop_html_a39870dcf4e2432a29569a658ec0e33be"><div class="ttname"><a href="classprocess_1_1internal_1_1Loop.html#a39870dcf4e2432a29569a658ec0e33be">process::internal::Loop::weak</a></div><div class="ttdeci">std::weak_ptr&lt; Loop &gt; weak()</div><div class="ttdef"><b>Definition:</b> loop.hpp:275</div></div>
<div class="ttc" id="classprocess_1_1ControlFlow_html_af212ef291f73ba2e7b37586a577a794b"><div class="ttname"><a href="classprocess_1_1ControlFlow.html#af212ef291f73ba2e7b37586a577a794b">process::ControlFlow::Statement</a></div><div class="ttdeci">Statement</div><div class="ttdef"><b>Definition:</b> loop.hpp:168</div></div>
<div class="ttc" id="classprocess_1_1ProcessBase_html"><div class="ttname"><a href="classprocess_1_1ProcessBase.html">process::ProcessBase</a></div><div class="ttdef"><b>Definition:</b> process.hpp:69</div></div>
<div class="ttc" id="classprocess_1_1Future_html_a4012f3faa6191fc13874dca62c14ced0"><div class="ttname"><a href="classprocess_1_1Future.html#a4012f3faa6191fc13874dca62c14ced0">process::Future::discard</a></div><div class="ttdeci">bool discard()</div><div class="ttdef"><b>Definition:</b> future.hpp:1025</div></div>
<div class="ttc" id="classprocess_1_1ControlFlow_html_a5ce1f085b8043fe8ac900ce9f63a0bde"><div class="ttname"><a href="classprocess_1_1ControlFlow.html#a5ce1f085b8043fe8ac900ce9f63a0bde">process::ControlFlow::ValueType</a></div><div class="ttdeci">T ValueType</div><div class="ttdef"><b>Definition:</b> loop.hpp:166</div></div>
<div class="ttc" id="dispatch_8hpp_html"><div class="ttname"><a href="dispatch_8hpp.html">dispatch.hpp</a></div></div>
<div class="ttc" id="namespaceprocess_html_aff22904a83567125d3b4d0d88e5a2270"><div class="ttname"><a href="namespaceprocess.html#aff22904a83567125d3b4d0d88e5a2270">process::spawn</a></div><div class="ttdeci">UPID spawn(ProcessBase *process, bool manage=false)</div><div class="ttdoc">Spawn a new process. </div></div>
<div class="ttc" id="namespaceprocess_html_a20443908afa3212215166e26065349e5"><div class="ttname"><a href="namespaceprocess.html#a20443908afa3212215166e26065349e5">process::terminate</a></div><div class="ttdeci">void terminate(const UPID &amp;pid, bool inject=true)</div><div class="ttdoc">Sends a TerminateEvent to the given process. </div></div>
<div class="ttc" id="classprocess_1_1Future_html_abc89036db733a417b7b383b091efaf3c"><div class="ttname"><a href="classprocess_1_1Future.html#abc89036db733a417b7b383b091efaf3c">process::Future::isDiscarded</a></div><div class="ttdeci">bool isDiscarded() const </div><div class="ttdef"><b>Definition:</b> future.hpp:1074</div></div>
<div class="ttc" id="structprocess_1_1UPID_html"><div class="ttname"><a href="structprocess_1_1UPID.html">process::UPID</a></div><div class="ttdoc">An &amp;quot;untyped&amp;quot; PID, used to encapsulate the process ID for lower-layer abstractions (eg...</div><div class="ttdef"><b>Definition:</b> pid.hpp:39</div></div>
<div class="ttc" id="classprocess_1_1Future_html_a71bde220aed3c725cef2040f63adf42a"><div class="ttname"><a href="classprocess_1_1Future.html#a71bde220aed3c725cef2040f63adf42a">process::Future::onAny</a></div><div class="ttdeci">const Future&lt; T &gt; &amp; onAny(AnyCallback &amp;&amp;callback) const </div><div class="ttdef"><b>Definition:</b> future.hpp:1265</div></div>
<div class="ttc" id="classprocess_1_1ControlFlow_html_ad0fbad53169fc7766d61a69393ac14bc"><div class="ttname"><a href="classprocess_1_1ControlFlow.html#ad0fbad53169fc7766d61a69393ac14bc">process::ControlFlow::value</a></div><div class="ttdeci">const T &amp; value() const &amp;</div><div class="ttdef"><b>Definition:</b> loop.hpp:212</div></div>
<div class="ttc" id="classprocess_1_1internal_1_1Loop_html_a0c7b83e40e88e5d40ad29802be101dfd"><div class="ttname"><a href="classprocess_1_1internal_1_1Loop.html#a0c7b83e40e88e5d40ad29802be101dfd">process::internal::Loop::Loop</a></div><div class="ttdeci">Loop(const Option&lt; UPID &gt; &amp;pid, Iterate &amp;&amp;iterate, Body &amp;&amp;body)</div><div class="ttdef"><b>Definition:</b> loop.hpp:432</div></div>
<div class="ttc" id="classprocess_1_1Promise_html"><div class="ttname"><a href="classprocess_1_1Promise.html">process::Promise&lt; R &gt;</a></div></div>
<div class="ttc" id="3rdparty_2libprocess_2include_2process_2pid_8hpp_html"><div class="ttname"><a href="3rdparty_2libprocess_2include_2process_2pid_8hpp.html">pid.hpp</a></div></div>
<div class="ttc" id="namespaceprocess_html_a59c192ee8ea5abbbee1642957f47c92a"><div class="ttname"><a href="namespaceprocess.html#a59c192ee8ea5abbbee1642957f47c92a">process::loop</a></div><div class="ttdeci">struct ev_loop * loop</div><div class="ttdef"><b>Definition:</b> loop.hpp:452</div></div>
<div class="ttc" id="classprocess_1_1internal_1_1Loop_html_a11417f29be6ae721ee9331b0ccbf16e4"><div class="ttname"><a href="classprocess_1_1internal_1_1Loop.html#a11417f29be6ae721ee9331b0ccbf16e4">process::internal::Loop::run</a></div><div class="ttdeci">void run(Future&lt; T &gt; next)</div><div class="ttdef"><b>Definition:</b> loop.hpp:329</div></div>
<div class="ttc" id="future_8hpp_html"><div class="ttname"><a href="future_8hpp.html">future.hpp</a></div></div>
<div class="ttc" id="classprocess_1_1ControlFlow_1_1Break_html"><div class="ttname"><a href="classprocess_1_1ControlFlow_1_1Break.html">process::ControlFlow::Break</a></div><div class="ttdef"><b>Definition:</b> loop.hpp:186</div></div>
<div class="ttc" id="namespaceos_html_ae19e4161a51b86a1f330f3bf1dc75389"><div class="ttname"><a href="namespaceos.html#ae19e4161a51b86a1f330f3bf1dc75389">os::process</a></div><div class="ttdeci">Result&lt; Process &gt; process(pid_t pid)</div><div class="ttdef"><b>Definition:</b> freebsd.hpp:30</div></div>
<div class="ttc" id="classprocess_1_1ControlFlow_1_1Continue_html"><div class="ttname"><a href="classprocess_1_1ControlFlow_1_1Continue.html">process::ControlFlow::Continue</a></div><div class="ttdef"><b>Definition:</b> loop.hpp:174</div></div>
<div class="ttc" id="structNone_html"><div class="ttname"><a href="structNone.html">None</a></div><div class="ttdef"><b>Definition:</b> none.hpp:27</div></div>
<div class="ttc" id="structprocess_1_1Continue_html"><div class="ttname"><a href="structprocess_1_1Continue.html">process::Continue</a></div><div class="ttdef"><b>Definition:</b> loop.hpp:223</div></div>
<div class="ttc" id="classprocess_1_1Promise_html_a8aef752d6c90cb11e58e3166b7592ef1"><div class="ttname"><a href="classprocess_1_1Promise.html#a8aef752d6c90cb11e58e3166b7592ef1">process::Promise::future</a></div><div class="ttdeci">Future&lt; T &gt; future() const </div><div class="ttdef"><b>Definition:</b> future.hpp:782</div></div>
<div class="ttc" id="classprocess_1_1ControlFlow_html_a9fa0744c29d7bffd54f10aea580ba187"><div class="ttname"><a href="classprocess_1_1ControlFlow.html#a9fa0744c29d7bffd54f10aea580ba187">process::ControlFlow::value</a></div><div class="ttdeci">const T &amp;&amp; value() const &amp;&amp;</div><div class="ttdef"><b>Definition:</b> loop.hpp:214</div></div>
<div class="ttc" id="classprocess_1_1ControlFlow_html_af212ef291f73ba2e7b37586a577a794ba2f453cfe638e57e27bb0c9512436111e"><div class="ttname"><a href="classprocess_1_1ControlFlow.html#af212ef291f73ba2e7b37586a577a794ba2f453cfe638e57e27bb0c9512436111e">process::ControlFlow::Statement::CONTINUE</a></div></div>
<div class="ttc" id="namespacemesos_1_1internal_1_1fs_html_a2343e2642db514496ba8380776487fba"><div class="ttname"><a href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">mesos::internal::fs::type</a></div><div class="ttdeci">Try&lt; uint32_t &gt; type(const std::string &amp;path)</div></div>
<div class="ttc" id="classprocess_1_1ControlFlow_html_a3a15eba61473df457b0ac4cbaddd21ed"><div class="ttname"><a href="classprocess_1_1ControlFlow.html#a3a15eba61473df457b0ac4cbaddd21ed">process::ControlFlow::value</a></div><div class="ttdeci">T &amp;&amp; value()&amp;&amp;</div><div class="ttdef"><b>Definition:</b> loop.hpp:213</div></div>
<div class="ttc" id="classprocess_1_1internal_1_1Loop_html_a077dc66e82c758d8b82dda11fc530d72"><div class="ttname"><a href="classprocess_1_1internal_1_1Loop.html#a077dc66e82c758d8b82dda11fc530d72">process::internal::Loop::Loop</a></div><div class="ttdeci">Loop(const Option&lt; UPID &gt; &amp;pid, const Iterate &amp;iterate, const Body &amp;body)</div><div class="ttdef"><b>Definition:</b> loop.hpp:429</div></div>
<div class="ttc" id="owned_8hpp_html"><div class="ttname"><a href="owned_8hpp.html">owned.hpp</a></div></div>
<div class="ttc" id="namespacecgroups_html_a2ecc89636706df947027a4c3c2100fbe"><div class="ttname"><a href="namespacecgroups.html#a2ecc89636706df947027a4c3c2100fbe">cgroups::create</a></div><div class="ttdeci">Try&lt; Nothing &gt; create(const std::string &amp;hierarchy, const std::string &amp;cgroup, bool recursive=false)</div></div>
<div class="ttc" id="classprocess_1_1internal_1_1Loop_html_a9923c05dd6d27f9ec0c61d28a5387641"><div class="ttname"><a href="classprocess_1_1internal_1_1Loop.html#a9923c05dd6d27f9ec0c61d28a5387641">process::internal::Loop::shared</a></div><div class="ttdeci">std::shared_ptr&lt; Loop &gt; shared()</div><div class="ttdef"><b>Definition:</b> loop.hpp:269</div></div>
<div class="ttc" id="classprocess_1_1Future_html_ae649c56b07f44c05e4b7aa3620133ff9"><div class="ttname"><a href="classprocess_1_1Future.html#ae649c56b07f44c05e4b7aa3620133ff9">process::Future::failure</a></div><div class="ttdeci">const std::string &amp; failure() const </div><div class="ttdef"><b>Definition:</b> future.hpp:1165</div></div>
<div class="ttc" id="classprocess_1_1ControlFlow_1_1Break_html_af7fb2876b55483e08e446e4206695eca"><div class="ttname"><a href="classprocess_1_1ControlFlow_1_1Break.html#af7fb2876b55483e08e446e4206695eca">process::ControlFlow::Break::Break</a></div><div class="ttdeci">Break(T t)</div><div class="ttdef"><b>Definition:</b> loop.hpp:189</div></div>
<div class="ttc" id="classprocess_1_1ControlFlow_html_a5c21809a15f9efe012e30d1a1cf05c3a"><div class="ttname"><a href="classprocess_1_1ControlFlow.html#a5c21809a15f9efe012e30d1a1cf05c3a">process::ControlFlow::value</a></div><div class="ttdeci">T &amp; value()&amp;</div><div class="ttdef"><b>Definition:</b> loop.hpp:211</div></div>
<div class="ttc" id="defer_8hpp_html"><div class="ttname"><a href="defer_8hpp.html">defer.hpp</a></div></div>
<div class="ttc" id="namespaceprocess_html_a8b27a2ef76eb133bf0ce7a5eea4fb77c"><div class="ttname"><a href="namespaceprocess.html#a8b27a2ef76eb133bf0ce7a5eea4fb77c">process::defer</a></div><div class="ttdeci">Deferred&lt; void()&gt; defer(const PID&lt; T &gt; &amp;pid, void(T::*method)())</div><div class="ttdef"><b>Definition:</b> defer.hpp:35</div></div>
<div class="ttc" id="classprocess_1_1Future_html_a18f97963e0636071b54401b200fedfc2"><div class="ttname"><a href="classprocess_1_1Future.html#a18f97963e0636071b54401b200fedfc2">process::Future::hasDiscard</a></div><div class="ttdeci">bool hasDiscard() const </div><div class="ttdef"><b>Definition:</b> future.hpp:1088</div></div>
<div class="ttc" id="libprocess_2include_2process_2process_8hpp_html"><div class="ttname"><a href="libprocess_2include_2process_2process_8hpp.html">process.hpp</a></div></div>
<div class="ttc" id="classprocess_1_1ControlFlow_html"><div class="ttname"><a href="classprocess_1_1ControlFlow.html">process::ControlFlow</a></div><div class="ttdef"><b>Definition:</b> loop.hpp:163</div></div>
<div class="ttc" id="classprocess_1_1internal_1_1Loop_html_a4743d5b323d0d9923cd83fd1abeda9c3"><div class="ttname"><a href="classprocess_1_1internal_1_1Loop.html#a4743d5b323d0d9923cd83fd1abeda9c3">process::internal::Loop::start</a></div><div class="ttdeci">Future&lt; R &gt; start()</div><div class="ttdef"><b>Definition:</b> loop.hpp:280</div></div>
<div class="ttc" id="classprocess_1_1Future_html_a493227e57f8848e37777b89c0f81e2ec"><div class="ttname"><a href="classprocess_1_1Future.html#a493227e57f8848e37777b89c0f81e2ec">process::Future::isFailed</a></div><div class="ttdeci">bool isFailed() const </div><div class="ttdef"><b>Definition:</b> future.hpp:1081</div></div>
<div class="ttc" id="classprocess_1_1Future_html"><div class="ttname"><a href="classprocess_1_1Future.html">process::Future</a></div><div class="ttdef"><b>Definition:</b> future.hpp:56</div></div>
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