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Posted to commits@mesos.apache.org by gi...@apache.org on 2018/03/14 17:55:26 UTC

[19/23] mesos-site git commit: Updated the website built from mesos SHA: 768d6fc.

http://git-wip-us.apache.org/repos/asf/mesos-site/blob/9c0e2e8a/content/api/latest/c++/deferred_8hpp_source.html
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 <a href="deferred_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_DEFERRED_HPP__</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#define __PROCESS_DEFERRED_HPP__</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;</div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &lt;functional&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="dispatch_8hpp.html">process/dispatch.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="3rdparty_2libprocess_2include_2process_2pid_8hpp.html">
 process/pid.hpp</a>&gt;</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;</div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="preprocessor_8hpp.html">stout/preprocessor.hpp</a>&gt;</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;</div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceprocess.html">process</a> {</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="comment">// Acts like a function call but runs within an asynchronous execution</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="comment">// context such as an Executor or a Pr
 ocessBase (enforced because only</span></div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="comment">// an executor or the &#39;defer&#39; routines are allowed to create them).</span></div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> F&gt;</div><div class="line"><a name="l00029"></a><span class="lineno"><a class="line" href="structprocess_1_1Deferred.html">   29</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structprocess_1_1Deferred.html">Deferred</a> : std::function&lt;F&gt;</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;{</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="keyword">private</span>:</div><div class="line"><a name="l00032"></a><span class="lineno"><a class="line" href="structprocess_1_1Deferred.html#a763b2f
 90bc53f92d680a635fe28e858e">   32</a></span>&#160;  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="classprocess_1_1Executor.html">Executor</a>;</div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;</div><div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="structprocess_1_1Deferred.html#a35c7b88e87a64a1bf407363cdc21a88b">   34</a></span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> G&gt; <span class="keyword">friend</span> <span class="keyword">struct </span><a class="code" href="structprocess_1_1__Deferred.html">_Deferred</a>;</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;  <span class="comment">// TODO(benh): Consider removing these in favor of having these</span></div><div class="line"><a name="l00037"></a><span class
 ="lineno">   37</span>&#160;  <span class="comment">// functions return _Deferred.</span></div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;  <span class="keyword">friend</span> <a class="code" href="structprocess_1_1Deferred.html">Deferred&lt;void()&gt;</a></div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;  <a class="code" href="structprocess_1_1Deferred.html#aee12191d24dd6ff90f5b1c1fb10552c6">defer</a>(<span class="keyword">const</span> <a class="code" href="structprocess_1_1PID.html">PID&lt;T&gt;</a>&amp; pid, <span class="keywordtype">void</span> (T::*method)());</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;  <span class="key
 word">template</span> &lt;<span class="keyword">typename</span> R, <span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;  <span class="keyword">friend</span> <a class="code" href="structprocess_1_1Deferred.html">Deferred&lt;Future&lt;R&gt;</a>()&gt;</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;  <a class="code" href="structprocess_1_1Deferred.html#aee12191d24dd6ff90f5b1c1fb10552c6">defer</a>(<span class="keyword">const</span> <a class="code" href="structprocess_1_1PID.html">PID&lt;T&gt;</a>&amp; pid, <a class="code" href="classprocess_1_1Future.html">Future&lt;R&gt;</a> (T::*method)());</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> R, <span class="keyword">typename</span> T
 &gt;</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;  <span class="keyword">friend</span> <a class="code" href="structprocess_1_1Deferred.html">Deferred&lt;Future&lt;R&gt;</a>()&gt;</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;  <a class="code" href="structprocess_1_1Deferred.html#aee12191d24dd6ff90f5b1c1fb10552c6">defer</a>(<span class="keyword">const</span> <a class="code" href="structprocess_1_1PID.html">PID&lt;T&gt;</a>&amp; pid, R (T::*method)());</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;  <span class="comment">/*implicit*/</span> <a class="code" href="structprocess_1_1Deferred.html">Deferred</a>(<span class="keyword">const</span> std::function&lt;F&gt;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>) : <a class="code" href="namespacestd.ht
 ml">std</a>::function&lt;F&gt;(f) {}</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;};</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="comment">// We need an intermediate &quot;deferred&quot; type because when constructing a</span></div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="comment">// Deferred we won&#39;t always know the underlying function type (for</span></div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="comment">// example, if we&#39;re being passed a std::bind or a lambda). A lambda</span></div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="comment">// won&#39;t always implicitly convert t
 o a std::function so instead we</span></div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="comment">// hold onto the functor type F and let the compiler invoke the</span></div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="comment">// necessary cast operator (below) when it actually has determined</span></div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="comment">// what type is needed. This is similar in nature to how std::bind</span></div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="comment">// works with its intermediate _Bind type (which the pre-C++11</span></div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="comment">// implementation relied on).</span></div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="keyword">te
 mplate</span> &lt;<span class="keyword">typename</span> F&gt;</div><div class="line"><a name="l00064"></a><span class="lineno"><a class="line" href="structprocess_1_1__Deferred.html">   64</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structprocess_1_1__Deferred.html">_Deferred</a></div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;{</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;  <span class="comment">// We expect that conversion operators are invoked on rvalues only,</span></div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;  <span class="comment">// as _Deferred is supposed to be used directly as a result of defer call.</span></div><div class="line"><a name="l00068"></a><span class="lineno"><a class="line" href="structprocess_1_1__Deferred.html#a60f19ff0e320b6a07d749aa681153af9">   68</a></span>&#160;  <span class="keyword">operator</span> <a class="cod
 e" href="structprocess_1_1Deferred.html">Deferred&lt;void()&gt;</a>() &amp;&amp;</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;  {</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    <span class="comment">// The &#39;pid&#39; differentiates an already dispatched functor versus</span></div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;    <span class="comment">// one which still needs to be dispatched (which is done</span></div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    <span class="comment">// below). We have to delay wrapping the dispatch (for example, in</span></div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    <span class="comment">// defer.hpp) as long as possible because we don&#39;t always know</span></div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    <span class="c
 omment">// what type the functor is or is going to be cast to (i.e., a</span></div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;    <span class="comment">// std::bind might can be cast to functions that do or do not take</span></div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    <span class="comment">// arguments which will just be dropped when invoking the</span></div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;    <span class="comment">// underlying bound function).</span></div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    <span class="keywordflow">if</span> (pid.isNone()) {</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;      <span class="keywordflow">return</span> std::function&lt;void()&gt;(std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>));</div><di
 v class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    }</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;    <span class="comment">// We need to explicitly copy the members otherwise we&#39;ll</span></div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;    <span class="comment">// implicitly copy &#39;this&#39; which might not exist at invocation.</span></div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    <a class="code" href="classOption.html">Option&lt;UPID&gt;</a> pid_ = pid;</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    F&amp;&amp; f_ = std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>);</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;</div><di
 v class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;    <span class="keywordflow">return</span> std::function&lt;void()&gt;(</div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;        [=]() {</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;          <a class="code" href="namespaceprocess.html#acfbc29404bc653268289691b0dd59e22">dispatch</a>(pid_.<a class="code" href="classOption.html#a21358442c0fac1cc978a67a9a9089a79">get</a>(), f_);</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;        });</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;  }</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;</div><div class="line"><a name="l00093"></a><span class="lineno"><a class="line" href="structprocess_1_1__Deferred.html#a5e4175312beb53ef11b7322d90d9cecb">   93</a></span>&#160;  <span class="keyword">ope
 rator</span> std::function&lt;void()&gt;() &amp;&amp;</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;  {</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    <span class="keywordflow">if</span> (pid.isNone()) {</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;      <span class="keywordflow">return</span> std::function&lt;void()&gt;(std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>));</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    }</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;    <a class="code" href="classOption.html">Option&lt;UPID&gt;</a> pid_ = pid;</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;    F&amp;&amp; f_ = std::forwa
 rd&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>);</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    <span class="keywordflow">return</span> std::function&lt;void()&gt;(</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;        [=]() {</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;          <a class="code" href="namespaceprocess.html#acfbc29404bc653268289691b0dd59e22">dispatch</a>(pid_.<a class="code" href="classOption.html#a21358442c0fac1cc978a67a9a9089a79">get</a>(), f_);</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;        });</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;  }</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;</div><div cla
 ss="line"><a name="l00108"></a><span class="lineno"><a class="line" href="structprocess_1_1__Deferred.html#a370b37856e5163d23dcfd5a43d111c8c">  108</a></span>&#160;  <span class="keyword">operator</span> <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce&lt;void()&gt;</a>() &amp;&amp;</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;  {</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    <span class="keywordflow">if</span> (pid.isNone()) {</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;      <span class="keywordflow">return</span> <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce&lt;void()&gt;</a>(std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>));</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;    }</div><div class="line"><a name="l00
 113"></a><span class="lineno">  113</span>&#160;</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;    <a class="code" href="classOption.html">Option&lt;UPID&gt;</a> pid_ = pid;</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce&lt;void()&gt;</a>(</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;        <a class="code" href="namespacelambda.html#a67028306e65f852e64b8a4b7715803d2">lambda::partial</a>(</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;            [pid_](<span class="keyword">typename</span> <a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">std::decay&lt;F&gt;::type</a>&amp;&amp; f_) {</div><di
 v class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;              <a class="code" href="namespaceprocess.html#acfbc29404bc653268289691b0dd59e22">dispatch</a>(pid_.<a class="code" href="classOption.html#a21358442c0fac1cc978a67a9a9089a79">get</a>(), std::move(f_));</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;            },</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;            std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)));</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;  }</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;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> R&gt;</div><div class="line"><a name="l00125"></a><span class="lineno"
 ><a class="line" href="structprocess_1_1__Deferred.html#a4700f9db425c2bf0aecae10d0a7d03c3">  125</a></span>&#160;  <span class="keyword">operator</span> <a class="code" href="structprocess_1_1Deferred.html">Deferred&lt;R()&gt;</a>() &amp;&amp;</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;  {</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;    <span class="keywordflow">if</span> (pid.isNone()) {</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;      <span class="keywordflow">return</span> std::function&lt;R()&gt;(std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>));</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;    }</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    <a
  class="code" href="classOption.html">Option&lt;UPID&gt;</a> pid_ = pid;</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;    F&amp;&amp; f_ = std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>);</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="keywordflow">return</span> std::function&lt;R()&gt;(</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;        [=]() {</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;          <span class="keywordflow">return</span> <a class="code" href="namespaceprocess.html#acfbc29404bc653268289691b0dd59e22">dispatch</a>(pid_.<a class="code" href="classOption.html#a21358442c0fac1cc978a67a9a9089a79">get</a>(), f_);</div><div class="line"><a name="l00137"></a><span class
 ="lineno">  137</span>&#160;        });</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;  }</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> R&gt;</div><div class="line"><a name="l00141"></a><span class="lineno"><a class="line" href="structprocess_1_1__Deferred.html#a995cbb236f072d7a3fe8902ff52bc026">  141</a></span>&#160;  <span class="keyword">operator</span> std::function&lt;R()&gt;() &amp;&amp;</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;  {</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;    <span class="keywordflow">if</span> (pid.isNone()) {</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;      <span class="keywordflow">return</span> std:
 :function&lt;R()&gt;(std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>));</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;    <a class="code" href="classOption.html">Option&lt;UPID&gt;</a> pid_ = pid;</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;    F&amp;&amp; f_ = std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>);</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;    <span class="keywordflow">return</span> std::function&lt;R()&gt;(</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#16
 0;        [=]() {</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;          <span class="keywordflow">return</span> <a class="code" href="namespaceprocess.html#acfbc29404bc653268289691b0dd59e22">dispatch</a>(pid_.<a class="code" href="classOption.html#a21358442c0fac1cc978a67a9a9089a79">get</a>(), f_);</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;        });</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;  }</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> R&gt;</div><div class="line"><a name="l00157"></a><span class="lineno"><a class="line" href="structprocess_1_1__Deferred.html#aba845f80da26e3f4a34953224d025042">  157</a></span>&#160;  <span class="keyword">operator</span> <a cl
 ass="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce&lt;R()&gt;</a>() &amp;&amp;</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;  {</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;    <span class="keywordflow">if</span> (pid.isNone()) {</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;      <span class="keywordflow">return</span> <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce&lt;R()&gt;</a>(std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>));</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;    }</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;    <a class="code" href="classOption.html">Option&lt;UPID&gt;</a> pid_ = pid;</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="keywordflow">return</span> <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce&lt;R()&gt;</a>(</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;        <a class="code" href="namespacelambda.html#a67028306e65f852e64b8a4b7715803d2">lambda::partial</a>(</div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;          [pid_](<span class="keyword">typename</span> <a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">std::decay&lt;F&gt;::type</a>&amp;&amp; f_) {</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;            <span class="keywordflow">return</span> <a class="code" href="namespaceprocess.html#acfbc29404bc653268289691b0dd59e22">dispatch</a>(p
 id_.<a class="code" href="classOption.html#a21358442c0fac1cc978a67a9a9089a79">get</a>(), std::move(f_));</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;          std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)));</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;  }</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;<span class="comment">// Expands to lambda::_$(N+1). N is zero-based, and placeholders are one-based.</span></div><div class="line"><a name="l00174"></a><span class="lineno"><a class="line" href="deferred_8hpp.html#a2ece2de9f619ac7cc7c7f74dbecbf1ff">  174</a></span>&#160;<span class="preprocessor">#define PLACEHOLDER(Z, N, DATA) CAT(lam
 bda::_, INC(N))</span></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="comment">// This assumes type and variable base names are `P` and `p` respectively.</span></div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;<span class="preprocessor">#define FORWARD(Z, N, DATA) std::forward&lt;P ## N&gt;(p ## N)</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="comment">// Due to a bug (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41933)</span></div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;  <span class="comment">// with variadic templates and lambdas, we still need to do</span></div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;
   <span class="comment">// preprocessor expansions. In addition, due to a bug with clang (or</span></div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;  <span class="comment">// libc++) we can&#39;t use std::bind with a std::function so we have to</span></div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;  <span class="comment">// explicitly use the std::function&lt;R(P...)&gt;::operator() (see</span></div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;  <span class="comment">// http://stackoverflow.com/questions/20097616/stdbind-to-a-stdfunction-crashes-with-clang).</span></div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;<span class="preprocessor">#define TEMPLATE(Z, N, DATA)                                             \</span></div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;<span class="preprocessor">  template &lt;ENUM
 _PARAMS(N, typename P)&gt;                                  \</span></div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;<span class="preprocessor">  operator Deferred&lt;void(ENUM_PARAMS(N, P))&gt;() &amp;&amp;                        \</span></div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;<span class="preprocessor">  {                                                                      \</span></div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;<span class="preprocessor">    if (pid.isNone()) {                                                  \</span></div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;<span class="preprocessor">      return std::function&lt;void(ENUM_PARAMS(N, P))&gt;(std::forward&lt;F&gt;(f)); \</span></div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;<span class="preprocessor">    }                   
                                                  \</span></div><div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;<span class="preprocessor">                                                                         \</span></div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;<span class="preprocessor">    Option&lt;UPID&gt; pid_ = pid;                                             \</span></div><div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;<span class="preprocessor">    F&amp;&amp; f_ = std::forward&lt;F&gt;(f);                                         \</span></div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;<span class="preprocessor">                                                                         \</span></div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;<span class="preprocessor">    return std::function&lt;void(ENUM_PAR
 AMS(N, P))&gt;(                       \</span></div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;<span class="preprocessor">        [=](ENUM_BINARY_PARAMS(N, P, p)) {                               \</span></div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;<span class="preprocessor">          std::function&lt;void()&gt; f__([=]() {                              \</span></div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;<span class="preprocessor">            f_(ENUM_PARAMS(N, p));                                       \</span></div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;<span class="preprocessor">          });                                                            \</span></div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;<span class="preprocessor">          dispatch(pid_.get(), f__);                              
        \</span></div><div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;<span class="preprocessor">        });                                                              \</span></div><div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;<span class="preprocessor">  }                                                                      \</span></div><div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;<span class="preprocessor">                                                                         \</span></div><div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;<span class="preprocessor">  template &lt;ENUM_PARAMS(N, typename P)&gt;                                  \</span></div><div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;<span class="preprocessor">  operator std::function&lt;void(ENUM_PARAMS(N, P))&gt;() &amp;&amp;                   \</span></
 div><div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;<span class="preprocessor">  {                                                                      \</span></div><div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;<span class="preprocessor">    if (pid.isNone()) {                                                  \</span></div><div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;<span class="preprocessor">      return std::function&lt;void(ENUM_PARAMS(N, P))&gt;(std::forward&lt;F&gt;(f)); \</span></div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;<span class="preprocessor">    }                                                                    \</span></div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;<span class="preprocessor">                                                                         \</span></div><div class="line"><a 
 name="l00212"></a><span class="lineno">  212</span>&#160;<span class="preprocessor">    Option&lt;UPID&gt; pid_ = pid;                                             \</span></div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;<span class="preprocessor">    F&amp;&amp; f_ = std::forward&lt;F&gt;(f);                                         \</span></div><div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;<span class="preprocessor">                                                                         \</span></div><div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;<span class="preprocessor">    return std::function&lt;void(ENUM_PARAMS(N, P))&gt;(                       \</span></div><div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;<span class="preprocessor">        [=](ENUM_BINARY_PARAMS(N, P, p)) {                               \</span></div><div class="line"><a name="l0021
 7"></a><span class="lineno">  217</span>&#160;<span class="preprocessor">          std::function&lt;void()&gt; f__([=]() {                              \</span></div><div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;<span class="preprocessor">            f_(ENUM_PARAMS(N, p));                                       \</span></div><div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;<span class="preprocessor">          });                                                            \</span></div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;<span class="preprocessor">          dispatch(pid_.get(), f__);                                     \</span></div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;<span class="preprocessor">        });                                                              \</span></div><div class="line"><a name="l00222"></a><span class="lineno">  2
 22</span>&#160;<span class="preprocessor">  }                                                                      \</span></div><div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;<span class="preprocessor">                                                                         \</span></div><div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;<span class="preprocessor">  template &lt;ENUM_PARAMS(N, typename P)&gt;                                  \</span></div><div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;<span class="preprocessor">  operator lambda::CallableOnce&lt;void(ENUM_PARAMS(N, P))&gt;() &amp;&amp;            \</span></div><div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;<span class="preprocessor">  {                                                                      \</span></div><div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;<s
 pan class="preprocessor">    if (pid.isNone()) {                                                  \</span></div><div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;<span class="preprocessor">      return lambda::CallableOnce&lt;void(ENUM_PARAMS(N, P))&gt;(              \</span></div><div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;<span class="preprocessor">          std::forward&lt;F&gt;(f));                                           \</span></div><div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;<span class="preprocessor">    }                                                                    \</span></div><div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;<span class="preprocessor">                                                                         \</span></div><div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;<span class="preprocessor">
     Option&lt;UPID&gt; pid_ = pid;                                             \</span></div><div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;<span class="preprocessor">                                                                         \</span></div><div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;<span class="preprocessor">    return lambda::CallableOnce&lt;void(ENUM_PARAMS(N, P))&gt;(                \</span></div><div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;<span class="preprocessor">        lambda::partial(                                                 \</span></div><div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;<span class="preprocessor">            [pid_](typename std::decay&lt;F&gt;::type&amp;&amp; f_,                    \</span></div><div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;<span class="preprocessor">           
         ENUM_BINARY_PARAMS(N, P, &amp;&amp;p)) {                      \</span></div><div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;<span class="preprocessor">              lambda::CallableOnce&lt;void()&gt; f__(                          \</span></div><div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;<span class="preprocessor">                  lambda::partial(std::move(f_), ENUM(N, FORWARD, _)));  \</span></div><div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;<span class="preprocessor">              dispatch(pid_.get(), std::move(f__));                      \</span></div><div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;<span class="preprocessor">            },                                                           \</span></div><div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;<span class="preprocessor">            std::forward&lt;F&gt;(
 f),                                          \</span></div><div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;<span class="preprocessor">            ENUM(N, PLACEHOLDER, _)));                                   \</span></div><div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;<span class="preprocessor">  }</span></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;  <a class="code" href="namespaceprocess.html#a4093b842d501fdddd4b2586e66c3db63">REPEAT_FROM_TO</a>(1, 3, <a class="code" href="deferred_8hpp.html#a659a0f3373b1b8ed3e348bc4332657e2">TEMPLATE</a>, _) <span class="comment">// Args A0 -&gt; A1.</span></div><div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;<span class="preprocessor">#undef TEMPLATE</span></div><div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#16
 0;</div><div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;<span class="preprocessor">#define TEMPLATE(Z, N, DATA)                                            \</span></div><div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;<span class="preprocessor">  template &lt;typename R, ENUM_PARAMS(N, typename P)&gt;                     \</span></div><div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;<span class="preprocessor">  operator Deferred&lt;R(ENUM_PARAMS(N, P))&gt;() &amp;&amp;                          \</span></div><div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;<span class="preprocessor">  {                                                                     \</span></div><div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;<span class="preprocessor">    if (pid.isNone()) {                                                 \</span></div><div class="li
 ne"><a name="l00254"></a><span class="lineno">  254</span>&#160;<span class="preprocessor">      return std::function&lt;R(ENUM_PARAMS(N, P))&gt;(std::forward&lt;F&gt;(f));   \</span></div><div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;<span class="preprocessor">    }                                                                   \</span></div><div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;<span class="preprocessor">                                                                        \</span></div><div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;<span class="preprocessor">    Option&lt;UPID&gt; pid_ = pid;                                            \</span></div><div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;<span class="preprocessor">    F&amp;&amp; f_ = std::forward&lt;F&gt;(f);                                        \</span></div><div class="line"><a nam
 e="l00259"></a><span class="lineno">  259</span>&#160;<span class="preprocessor">                                                                        \</span></div><div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;<span class="preprocessor">    return std::function&lt;R(ENUM_PARAMS(N, P))&gt;(                         \</span></div><div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;<span class="preprocessor">        [=](ENUM_BINARY_PARAMS(N, P, p)) {                              \</span></div><div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;<span class="preprocessor">          std::function&lt;R()&gt; f__([=]() {                                \</span></div><div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;<span class="preprocessor">            return f_(ENUM_PARAMS(N, p));                               \</span></div><div class="line"><a name="l00264"></a><span class="li
 neno">  264</span>&#160;<span class="preprocessor">          });                                                           \</span></div><div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;<span class="preprocessor">          return dispatch(pid_.get(), f__);                             \</span></div><div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;<span class="preprocessor">        });                                                             \</span></div><div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;<span class="preprocessor">  }                                                                     \</span></div><div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;<span class="preprocessor">                                                                        \</span></div><div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;<span class="prepr
 ocessor">  template &lt;typename R, ENUM_PARAMS(N, typename P)&gt;                     \</span></div><div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;<span class="preprocessor">  operator std::function&lt;R(ENUM_PARAMS(N, P))&gt;() &amp;&amp;                     \</span></div><div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;<span class="preprocessor">  {                                                                     \</span></div><div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;<span class="preprocessor">    if (pid.isNone()) {                                                 \</span></div><div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;<span class="preprocessor">      return std::function&lt;R(ENUM_PARAMS(N, P))&gt;(std::forward&lt;F&gt;(f));   \</span></div><div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;<span class="preprocessor"> 
    }                                                                   \</span></div><div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;<span class="preprocessor">                                                                        \</span></div><div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;<span class="preprocessor">    Option&lt;UPID&gt; pid_ = pid;                                            \</span></div><div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;<span class="preprocessor">    F&amp;&amp; f_ = std::forward&lt;F&gt;(f);                                        \</span></div><div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;<span class="preprocessor">                                                                        \</span></div><div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;<span class="preprocessor">    return std::functio
 n&lt;R(ENUM_PARAMS(N, P))&gt;(                         \</span></div><div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;<span class="preprocessor">        [=](ENUM_BINARY_PARAMS(N, P, p)) {                              \</span></div><div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;<span class="preprocessor">          std::function&lt;R()&gt; f__([=]() {                                \</span></div><div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;<span class="preprocessor">            return f_(ENUM_PARAMS(N, p));                               \</span></div><div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;<span class="preprocessor">          });                                                           \</span></div><div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;<span class="preprocessor">          return dispatch(pid_.get(), f__);          
                    \</span></div><div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;<span class="preprocessor">        });                                                             \</span></div><div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;<span class="preprocessor">  }                                                                     \</span></div><div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;<span class="preprocessor">                                                                        \</span></div><div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;<span class="preprocessor">  template &lt;typename R, ENUM_PARAMS(N, typename P)&gt;                     \</span></div><div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;<span class="preprocessor">  operator lambda::CallableOnce&lt;R(ENUM_PARAMS(N, P))&gt;() &amp;&amp;              \</
 span></div><div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;<span class="preprocessor">  {                                                                     \</span></div><div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;<span class="preprocessor">    if (pid.isNone()) {                                                 \</span></div><div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;<span class="preprocessor">      return lambda::CallableOnce&lt;R(ENUM_PARAMS(N, P))&gt;(                \</span></div><div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;<span class="preprocessor">          std::forward&lt;F&gt;(f));                                          \</span></div><div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;<span class="preprocessor">    }                                                                   \</span></div><div class="line"><
 a name="l00295"></a><span class="lineno">  295</span>&#160;<span class="preprocessor">                                                                        \</span></div><div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;<span class="preprocessor">    Option&lt;UPID&gt; pid_ = pid;                                            \</span></div><div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;<span class="preprocessor">                                                                        \</span></div><div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;<span class="preprocessor">    return lambda::CallableOnce&lt;R(ENUM_PARAMS(N, P))&gt;(                  \</span></div><div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;<span class="preprocessor">        lambda::partial(                                                \</span></div><div class="line"><a name="l00300"></a><span clas
 s="lineno">  300</span>&#160;<span class="preprocessor">            [pid_](typename std::decay&lt;F&gt;::type&amp;&amp; f_,                   \</span></div><div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;<span class="preprocessor">                   ENUM_BINARY_PARAMS(N, P, &amp;&amp;p)) {                     \</span></div><div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;<span class="preprocessor">              lambda::CallableOnce&lt;R()&gt; f__(                            \</span></div><div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;<span class="preprocessor">                  lambda::partial(std::move(f_), ENUM(N, FORWARD, _))); \</span></div><div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;<span class="preprocessor">              return dispatch(pid_.get(), std::move(f__));              \</span></div><div class="line"><a name="l00305"></a><span class="lineno">  3
 05</span>&#160;<span class="preprocessor">        },                                                              \</span></div><div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;<span class="preprocessor">        std::forward&lt;F&gt;(f),                                             \</span></div><div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;<span class="preprocessor">        ENUM(N, PLACEHOLDER, _)));                                      \</span></div><div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;<span class="preprocessor">  }</span></div><div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;</div><div class="line"><a name="l00310"></a><span class="lineno"><a class="line" href="structprocess_1_1__Deferred.html#a57e5070a3c69cdeec3336ef384c96d69">  310</a></span>&#160;  <a class="code" href="namespaceprocess.html#a4093b842d501fdddd4b2586e66c3db63">REPEAT_FROM_TO</a>(1, 3
 , <a class="code" href="deferred_8hpp.html#a659a0f3373b1b8ed3e348bc4332657e2">TEMPLATE</a>, _) <span class="comment">// Args A0 -&gt; A1.</span></div><div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;<span class="preprocessor">#undef TEMPLATE</span></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;<span class="preprocessor">#undef FORWARD</span></div><div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;<span class="preprocessor">#undef PLACEHOLDER</span></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;<span class="keyword">private</span>:</div><div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;  <span class="keyword">friend</span> <span class="keyword">class </span><a cla
 ss="code" href="classprocess_1_1Executor.html">Executor</a>;</div><div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;</div><div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> G&gt;</div><div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;  <span class="keyword">friend</span> <a class="code" href="structprocess_1_1__Deferred.html">_Deferred&lt;G&gt;</a> <a class="code" href="structprocess_1_1Deferred.html#aee12191d24dd6ff90f5b1c1fb10552c6">defer</a>(<span class="keyword">const</span> <a class="code" href="structprocess_1_1UPID.html">UPID</a>&amp; pid, G&amp;&amp; g);</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="comment">// This assumes type and variable base names are `A` and `a` respectively.
 </span></div><div class="line"><a name="l00323"></a><span class="lineno"><a class="line" href="deferred_8hpp.html#ae76028dfc9fdd64cb568444c99e1dc1a">  323</a></span>&#160;<span class="preprocessor">#define FORWARD(Z, N, DATA) std::forward&lt;A ## N&gt;(a ## N)</span></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;<span class="preprocessor">#define TEMPLATE(Z, N, DATA)                                             \</span></div><div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;<span class="preprocessor">  template &lt;typename T,                                                  \</span></div><div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;<span class="preprocessor">            ENUM_PARAMS(N, typename P),                                  \</span></div><div class="line"><a name="l00328"></a><span class="lineno"> 
  328</span>&#160;<span class="preprocessor">            ENUM_PARAMS(N, typename A)&gt;                                  \</span></div><div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;<span class="preprocessor">  friend auto defer(const PID&lt;T&gt;&amp; pid,                                   \</span></div><div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;<span class="preprocessor">                    void (T::*method)(ENUM_PARAMS(N, P)),                \</span></div><div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;<span class="preprocessor">                    ENUM_BINARY_PARAMS(N, A, &amp;&amp;a))                       \</span></div><div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;<span class="preprocessor">    -&gt; _Deferred&lt;decltype(                                               \</span></div><div class="line"><a name="l00333"></a><span class="lineno">  333</span
 >&#160;<span class="preprocessor">           lambda::partial(                                              \</span></div><div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;<span class="preprocessor">               &amp;std::function&lt;void(ENUM_PARAMS(N, P))&gt;::operator(),      \</span></div><div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;<span class="preprocessor">               std::function&lt;void(ENUM_PARAMS(N, P))&gt;(),                 \</span></div><div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;<span class="preprocessor">               ENUM(N, FORWARD, _)))&gt;;</span></div><div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;</div><div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;  <a class="code" href="namespaceprocess.html#a4093b842d501fdddd4b2586e66c3db63">REPEAT_FROM_TO</a>(1, 13, <a class="code" href="deferred_8hpp.html#a659a0f
 3373b1b8ed3e348bc4332657e2">TEMPLATE</a>, _) <span class="comment">// Args A0 -&gt; A11.</span></div><div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;<span class="preprocessor">#undef TEMPLATE</span></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="preprocessor">#define TEMPLATE(Z, N, DATA)                                             \</span></div><div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;<span class="preprocessor">  template &lt;typename R,                                                  \</span></div><div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;<span class="preprocessor">            typename T,                                                  \</span></div><div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;<span class="preproces
 sor">            ENUM_PARAMS(N, typename P),                                  \</span></div><div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;<span class="preprocessor">            ENUM_PARAMS(N, typename A)&gt;                                  \</span></div><div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;<span class="preprocessor">  friend auto defer(const PID&lt;T&gt;&amp; pid,                                   \</span></div><div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;<span class="preprocessor">                    Future&lt;R&gt; (T::*method)(ENUM_PARAMS(N, P)),           \</span></div><div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;<span class="preprocessor">                    ENUM_BINARY_PARAMS(N, A, &amp;&amp;a))                       \</span></div><div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;<span class="preprocessor">    -
 &gt; _Deferred&lt;decltype(                                               \</span></div><div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;<span class="preprocessor">           lambda::partial(                                              \</span></div><div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;<span class="preprocessor">               &amp;std::function&lt;Future&lt;R&gt;(ENUM_PARAMS(N, P))&gt;::operator(), \</span></div><div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;<span class="preprocessor">               std::function&lt;Future&lt;R&gt;(ENUM_PARAMS(N, P))&gt;(),            \</span></div><div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;<span class="preprocessor">               ENUM(N, FORWARD, _)))&gt;;</span></div><div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;</div><div class="line"><a name="l00355"></a><span class="lineno">  
 355</span>&#160;  <a class="code" href="namespaceprocess.html#a4093b842d501fdddd4b2586e66c3db63">REPEAT_FROM_TO</a>(1, 13, <a class="code" href="deferred_8hpp.html#a659a0f3373b1b8ed3e348bc4332657e2">TEMPLATE</a>, _) <span class="comment">// Args A0 -&gt; A11.</span></div><div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;<span class="preprocessor">#undef TEMPLATE</span></div><div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;</div><div class="line"><a name="l00358"></a><span class="lineno"><a class="line" href="deferred_8hpp.html#a659a0f3373b1b8ed3e348bc4332657e2">  358</a></span>&#160;<span class="preprocessor">#define TEMPLATE(Z, N, DATA)                                             \</span></div><div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;<span class="preprocessor">  template &lt;typename R,                                                  \</span></div><div class="line"><a name="l00360"></a><s
 pan class="lineno">  360</span>&#160;<span class="preprocessor">            typename T,                                                  \</span></div><div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;<span class="preprocessor">            ENUM_PARAMS(N, typename P),                                  \</span></div><div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;<span class="preprocessor">            ENUM_PARAMS(N, typename A)&gt;                                  \</span></div><div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;<span class="preprocessor">  friend auto defer(const PID&lt;T&gt;&amp; pid,                                   \</span></div><div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;<span class="preprocessor">                    R (T::*method)(ENUM_PARAMS(N, P)),                   \</span></div><div class="line"><a name="l00365"></a><span class="lineno">  365
 </span>&#160;<span class="preprocessor">                    ENUM_BINARY_PARAMS(N, A, &amp;&amp;a))                       \</span></div><div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;<span class="preprocessor">    -&gt; _Deferred&lt;decltype(                                               \</span></div><div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;<span class="preprocessor">         lambda::partial(                                                \</span></div><div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;<span class="preprocessor">           &amp;std::function&lt;Future&lt;R&gt;(ENUM_PARAMS(N, P))&gt;::operator(),     \</span></div><div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;<span class="preprocessor">           std::function&lt;Future&lt;R&gt;(ENUM_PARAMS(N, P))&gt;(),                \</span></div><div class="line"><a name="l00370"></a><span class="lineno">
   370</span>&#160;<span class="preprocessor">           ENUM(N, FORWARD, _)))&gt;;</span></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;  <a class="code" href="namespaceprocess.html#a4093b842d501fdddd4b2586e66c3db63">REPEAT_FROM_TO</a>(1, 13, <a class="code" href="deferred_8hpp.html#a659a0f3373b1b8ed3e348bc4332657e2">TEMPLATE</a>, _) <span class="comment">// Args A0 -&gt; A11.</span></div><div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;<span class="preprocessor">#undef TEMPLATE</span></div><div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;<span class="preprocessor">#undef FORWARD</span></div><div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;</div><div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;  <a class="code" href="structprocess_1_1Deferred.html#a3
 5c7b88e87a64a1bf407363cdc21a88b">_Deferred</a>(<span class="keyword">const</span> UPID&amp; pid, F&amp;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>) : pid(pid), <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>(<a class="code" href="namespacestd.html">std</a>::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)) {}</div><div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;</div><div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;  <span class="comment">/*implicit*/</span> <a class="code" href="structprocess_1_1Deferred.html#a35c7b88e87a64a1bf407363cdc21a88b">_Deferred</a>(F&amp;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>) : <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>(std::forward&lt;F&gt;(<a class="code" href="namesp
 aceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)) {}</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;  <a class="code" href="classOption.html">Option&lt;UPID&gt;</a> pid;</div><div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;  F <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>;</div><div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;};</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;} <span class="comment">// namespace process {</span></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="preprocessor">#endif // __PROCESS_DEFE
 RRED_HPP__</span></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:28</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:270</div></div>
 <div class="ttc" id="structprocess_1_1Deferred_html_a35c7b88e87a64a1bf407363cdc21a88b"><div class="ttname"><a href="structprocess_1_1Deferred.html#a35c7b88e87a64a1bf407363cdc21a88b">process::Deferred::_Deferred</a></div><div class="ttdeci">friend struct _Deferred</div><div class="ttdef"><b>Definition:</b> deferred.hpp:34</div></div>
-<div class="ttc" id="namespacelambda_html_a67028306e65f852e64b8a4b7715803d2"><div class="ttname"><a href="namespacelambda.html#a67028306e65f852e64b8a4b7715803d2">lambda::partial</a></div><div class="ttdeci">internal::Partial&lt; typename std::decay&lt; F &gt;::type, typename std::decay&lt; Args &gt;::type... &gt; partial(F &amp;&amp;f, Args &amp;&amp;...args)</div><div class="ttdef"><b>Definition:</b> lambda.hpp:291</div></div>
+<div class="ttc" id="namespacelambda_html_a67028306e65f852e64b8a4b7715803d2"><div class="ttname"><a href="namespacelambda.html#a67028306e65f852e64b8a4b7715803d2">lambda::partial</a></div><div class="ttdeci">internal::Partial&lt; typename std::decay&lt; F &gt;::type, typename std::decay&lt; Args &gt;::type... &gt; partial(F &amp;&amp;f, Args &amp;&amp;...args)</div><div class="ttdef"><b>Definition:</b> lambda.hpp:364</div></div>
 <div class="ttc" id="namespaceprocess_html_a4093b842d501fdddd4b2586e66c3db63"><div class="ttname"><a href="namespaceprocess.html#a4093b842d501fdddd4b2586e66c3db63">process::REPEAT_FROM_TO</a></div><div class="ttdeci">REPEAT_FROM_TO(1, 13, TEMPLATE, _) class AsyncExecutorProcess</div><div class="ttdef"><b>Definition:</b> async.hpp:63</div></div>
 <div class="ttc" id="namespacestd_html"><div class="ttname"><a href="namespacestd.html">std</a></div><div class="ttdef"><b>Definition:</b> type_utils.hpp:510</div></div>
 <div class="ttc" id="dispatch_8hpp_html"><div class="ttname"><a href="dispatch_8hpp.html">dispatch.hpp</a></div></div>
@@ -72,7 +72,7 @@
 <div class="ttc" id="classprocess_1_1Executor_html"><div class="ttname"><a href="classprocess_1_1Executor.html">process::Executor</a></div><div class="ttdef"><b>Definition:</b> executor.hpp:29</div></div>
 <div class="ttc" id="structprocess_1_1Deferred_html_aee12191d24dd6ff90f5b1c1fb10552c6"><div class="ttname"><a href="structprocess_1_1Deferred.html#aee12191d24dd6ff90f5b1c1fb10552c6">process::Deferred::defer</a></div><div class="ttdeci">friend 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="preprocessor_8hpp_html"><div class="ttname"><a href="preprocessor_8hpp.html">preprocessor.hpp</a></div></div>
-<div class="ttc" id="classlambda_1_1CallableOnce_html"><div class="ttname"><a href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a></div><div class="ttdef"><b>Definition:</b> lambda.hpp:341</div></div>
+<div class="ttc" id="classlambda_1_1CallableOnce_html"><div class="ttname"><a href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a></div><div class="ttdef"><b>Definition:</b> lambda.hpp:414</div></div>
 <div class="ttc" id="classprocess_1_1Future_html"><div class="ttname"><a href="classprocess_1_1Future.html">process::Future&lt; R &gt;</a></div></div>
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