You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@mesos.apache.org by gi...@apache.org on 2018/05/30 21:22:39 UTC

[08/10] mesos-site git commit: Updated the website built from mesos SHA: d95f984.

http://git-wip-us.apache.org/repos/asf/mesos-site/blob/0ed17e75/content/api/latest/c++/future_8hpp_source.html
----------------------------------------------------------------------
diff --git a/content/api/latest/c++/future_8hpp_source.html b/content/api/latest/c++/future_8hpp_source.html
index b7b34bc..32a3356 100644
--- a/content/api/latest/c++/future_8hpp_source.html
+++ b/content/api/latest/c++/future_8hpp_source.html
@@ -52,10 +52,10 @@
 <div class="title">future.hpp</div>  </div>
 </div><!--header-->
 <div class="contents">
-<a href="future_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">//</sp
 an></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="li
 ne"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#ifndef __PROCESS_FUTURE_HPP__</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#define __PROCESS_FUTURE_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;assert.h&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;atomic&gt;</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#include &lt;list&gt;</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#include &lt;memory
 &gt;</span> <span class="comment">// TODO(benh): Replace shared_ptr with unique_ptr.</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor">#include &lt;ostream&gt;</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#include &lt;set&gt;</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#include &lt;type_traits&gt;</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#include &lt;utility&gt;</span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></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="preprocessor">#i
 nclude &lt;glog/logging.h&gt;</span></div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="clock_8hpp.html">process/clock.hpp</a>&gt;</span></div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="latch_8hpp.html">process/latch.hpp</a>&gt;</span></div><div class="line"><a name="l00031"></a><span class="lineno">   31</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="l00032"></a><span class="lineno">   32</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="l00033"></a><span class="lin
 eno">   33</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="timer_8hpp.html">process/timer.hpp</a>&gt;</span></div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="abort_8hpp.html">stout/abort.hpp</a>&gt;</span></div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="stout_2include_2stout_2check_8hpp.html">stout/check.hpp</a>&gt;</span></div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="duration_8hpp.html">stout/duration.hpp</a>&gt;</span></div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="error_8hpp.html">stout/er
 ror.hpp</a>&gt;</span></div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="lambda_8hpp.html">stout/lambda.hpp</a>&gt;</span></div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="none_8hpp.html">stout/none.hpp</a>&gt;</span></div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="option_8hpp.html">stout/option.hpp</a>&gt;</span></div><div class="line"><a name="l00042"></a><span class="lineno">   42</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="l00043"></a><span class="lineno">   43</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="result_8hpp.html">stout/result.hpp</a>&gt
 ;</span></div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="result__of_8hpp.html">stout/result_of.hpp</a>&gt;</span></div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="stringify_8hpp.html">stout/stringify.hpp</a>&gt;</span></div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="synchronized_8hpp.html">stout/synchronized.hpp</a>&gt;</span></div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="try_8hpp.html">stout/try.hpp</a>&gt;</span></div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="preproces
 sor">#include &lt;<a class="code" href="strerror_8hpp.html">stout/os/strerror.hpp</a>&gt;</span></div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceprocess.html">process</a> {</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;<span class="comment">// Forward declarations (instead of include to break circular dependency).</span></div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> G&gt;</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="keyword">struct </span>_Deferred;</div><div class="line"><a name="l00056"></a><span class="lineno">
    56</span>&#160;</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html">   58</a></span>&#160;<span class="keyword">class </span><a class="code" href="classprocess_1_1Future.html">Future</a>;</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceinternal.html">internal</a> {</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="keyword">template</span> &lt;<span class="
 keyword">typename</span> T&gt;</div><div class="line"><a name="l00064"></a><span class="lineno"><a class="line" href="structprocess_1_1internal_1_1wrap.html">   64</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structprocess_1_1internal_1_1wrap.html">wrap</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="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="structprocess_1_1internal_1_1unwrap.html">   67</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structprocess_1_1internal_1_1unwrap.html">unwrap</a>;</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;} <span class="comment">//
  namespace internal {</span></div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="comment">// Forward declaration of Promise.</span></div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00074"></a><span class="lineno"><a class="line" href="classprocess_1_1Promise.html">   74</a></span>&#160;<span class="keyword">class </span><a class="code" href="classprocess_1_1Promise.html">Promise</a>;</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>
 &#160;<span class="comment">// Forward declaration of WeakFuture.</span></div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00079"></a><span class="lineno"><a class="line" href="classprocess_1_1WeakFuture.html">   79</a></span>&#160;<span class="keyword">class </span><a class="code" href="classprocess_1_1WeakFuture.html">WeakFuture</a>;</div><div 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;<span class="comment">// Forward declaration of Failure.</span></div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="keyword">struct </span><a class="code" href="structprocess_1_1Failure.html">Failure</a>;</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span cl
 ass="keyword">struct </span><a class="code" href="structprocess_1_1ErrnoFailure.html">ErrnoFailure</a>;</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="comment">// Definition of a &quot;shared&quot; future. A future can hold any</span></div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="comment">// copy-constructible value. A future is considered &quot;shared&quot; because</span></div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="comment">// by default a future can be accessed concurrently.</span></div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="lin
 e"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="keyword">class </span><a class="code" href="classprocess_1_1Future.html">Future</a></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;<span class="keyword">public</span>:</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;  <span class="comment">// Constructs a failed future.</span></div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;  <span class="keyword">static</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a> failed(<span class="keyword">const</span> std::string&amp; message);</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;  <a class="code" href="classprocess_1_1Future.html">Future
 </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;  <span class="comment">/*implicit*/</span> <a class="code" href="classprocess_1_1Future.html">Future</a>(<span class="keyword">const</span> T&amp; _t);</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;  <span class="comment">/*implicit*/</span> <a class="code" href="classprocess_1_1Future.html">Future</a>(T&amp;&amp; _t);</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> U&gt;</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;  <span class="comment">/*implicit*/</span> <a class="code" href="classprocess_1_1Future.html">Future</a>(<span class="keywor
 d">const</span> U&amp; u);</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;  <span class="comment">/*implicit*/</span> <a class="code" href="classprocess_1_1Future.html">Future</a>(<span class="keyword">const</span> <a class="code" href="structprocess_1_1Failure.html">Failure</a>&amp; failure);</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;  <span class="comment">/*implicit*/</span> <a class="code" href="classprocess_1_1Future.html">Future</a>(<span class="keyword">const</span> <a class="code" href="structprocess_1_1ErrnoFailure.html">ErrnoFailure</a>&amp; failure);</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;  <span class="co
 mment">/*implicit*/</span> <a class="code" href="classprocess_1_1Future.html">Future</a>(<span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; that) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;  <span class="comment">/*implicit*/</span> <a class="code" href="classprocess_1_1Future.html">Future</a>(<a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp;&amp; that) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> E&gt;</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;  <span class="comment">/*implicit*/</span> <a class="code" href="classprocess_1_1Future.
 html">Future</a>(<span class="keyword">const</span> <a class="code" href="classTry.html">Try&lt;T, E&gt;</a>&amp; t);</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> E&gt;</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;  <span class="comment">/*implicit*/</span> <a class="code" href="classprocess_1_1Future.html">Future</a>(<span class="keyword">const</span> <a class="code" href="classTry.html">Try</a>&lt;<a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>, E&gt;&amp; t);</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;  ~<a class="code" href="classprocess_1_1Future.html">Future</a>() = <span class="keywordflow">def
 ault</span>;</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;  <span class="comment">// Futures are assignable (and copyable). This results in the</span></div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;  <span class="comment">// reference to the previous future data being decremented and a</span></div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;  <span class="comment">// reference to &#39;that&#39; being incremented.</span></div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;  <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; operator=(<span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; that) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00123"></a><span
  class="lineno">  123</span>&#160;  <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; operator=(<a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp;&amp; that) = <span class="keywordflow">default</span>;</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">// Comparison operators useful for using futures in collections.</span></div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;  <span class="keywordtype">bool</span> <a class="code" href="namespaceprocess.html#aecbdc1b686bf195f0a1ae0cc891b5f7c">operator==</a>(<span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; that) <span class="keyword">const</span>;</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;  <span class="keywordtype">
 bool</span> <a class="code" href="namespaceprocess.html#ac891ac7e3502ead65abcbc1a5e3874ae">operator!=</a>(<span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; that) <span class="keyword">const</span>;</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;  <span class="keywordtype">bool</span> operator&lt;(const Future&lt;T&gt;&amp; that) <span class="keyword">const</span>;</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;  <span class="comment">// Helpers to get the current state of this future.</span></div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;  <span class="keywordtype">bool</span> isPending() <span class="keyword">const</span>;</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;  <span class="keywordtype">b
 ool</span> isReady() <span class="keyword">const</span>;</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;  <span class="keywordtype">bool</span> isDiscarded() <span class="keyword">const</span>;</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;  <span class="keywordtype">bool</span> isFailed() <span class="keyword">const</span>;</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;  <span class="keywordtype">bool</span> isAbandoned() <span class="keyword">const</span>;</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;  <span class="keywordtype">bool</span> hasDiscard() <span class="keyword">const</span>;</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;  <span class="comment">// Discards this future. Returns false if discard has already
  been</span></div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;  <span class="comment">// called or the future has already completed, i.e., is ready,</span></div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;  <span class="comment">// failed, or discarded. Note that a discard does not terminate any</span></div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;  <span class="comment">// computation but rather acts as a suggestion or indication that</span></div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;  <span class="comment">// the caller no longer cares about the result of some</span></div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;  <span class="comment">// computation. The callee can decide whether or not to continue the</span></div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;  <span cl
 ass="comment">// computation on their own (where best practices are to attempt to</span></div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;  <span class="comment">// stop the computation if possible). The callee can discard the</span></div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;  <span class="comment">// computation via Promise::discard which completes a future, at</span></div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;  <span class="comment">// which point, Future::isDiscarded is true (and the</span></div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;  <span class="comment">// Future::onDiscarded callbacks are executed). Before that point,</span></div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;  <span class="comment">// but after calling Future::discard, only Future::hasDiscard will</span></div><div class="line
 "><a name="l00150"></a><span class="lineno">  150</span>&#160;  <span class="comment">// return true and the Future::onDiscard callbacks will be invoked.</span></div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;  <span class="keywordtype">bool</span> <a class="code" href="namespaceprocess_1_1internal.html#a58d2ee086b173d21a4fc0550f843dd2e">discard</a>();</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;  <span class="comment">// Waits for this future to become ready, discarded, or failed.</span></div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;  <span class="keywordtype">bool</span> <a class="code" href="namespaceprocess_1_1internal.html#a45915c2c6b7aea85b1c9a726158f19fc">await</a>(<span class="keyword">const</span> <a class="code" href="classDuration.html">Duration</a>&amp; duration = <a class="code"
  href="classSeconds.html">Seconds</a>(-1)) <span class="keyword">const</span>;</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="comment">// Return the value associated with this future, waits indefinitely</span></div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;  <span class="comment">// until a value gets associated or until the future is discarded.</span></div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;  <span class="keyword">const</span> T&amp; <span class="keyword">get</span>() <span class="keyword">const</span>;</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;  <span class="keyword">const</span> T* operator-&gt;() <span class="keyword">const</span>;</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;</div><div clas
 s="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;  <span class="comment">// Returns the failure message associated with this future.</span></div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;  <span class="keyword">const</span> std::string&amp; failure() <span class="keyword">const</span>;</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;  <span class="comment">// Type of the callback functions that can get invoked when the</span></div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;  <span class="comment">// future gets set, fails, or is discarded.</span></div><div class="line"><a name="l00166"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a5120e0d308d767edec44225f5be926e2">  166</a></span>&#160;  <span class="keyword">typedef</span> <a class="code" href="c
 lasslambda_1_1CallableOnce.html">lambda::CallableOnce&lt;void()&gt;</a> <a class="code" href="classprocess_1_1Future.html#a5120e0d308d767edec44225f5be926e2">AbandonedCallback</a>;</div><div class="line"><a name="l00167"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#afc25a640dcf8680e88f26712a2717d8b">  167</a></span>&#160;  <span class="keyword">typedef</span> <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce&lt;void()&gt;</a> <a class="code" href="classprocess_1_1Future.html#afc25a640dcf8680e88f26712a2717d8b">DiscardCallback</a>;</div><div class="line"><a name="l00168"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a10a044e48b430d4f87e9cade748bfe90">  168</a></span>&#160;  <span class="keyword">typedef</span> <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce&lt;void(const T&amp;)&gt;</a> <a class="code" href="classprocess_1_1Future.html#a10a044e48b430d4f87e9cade748bfe90">Re
 adyCallback</a>;</div><div class="line"><a name="l00169"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a97e42f6b06e3bda93cdfbed6e8fa9093">  169</a></span>&#160;  <span class="keyword">typedef</span> <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce&lt;void(const std::string&amp;)&gt;</a> <a class="code" href="classprocess_1_1Future.html#a97e42f6b06e3bda93cdfbed6e8fa9093">FailedCallback</a>;</div><div class="line"><a name="l00170"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#af451893e5d06180aaeee5c42df0930c1">  170</a></span>&#160;  <span class="keyword">typedef</span> <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce&lt;void()&gt;</a> <a class="code" href="classprocess_1_1Future.html#af451893e5d06180aaeee5c42df0930c1">DiscardedCallback</a>;</div><div class="line"><a name="l00171"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#accc51795ce8b6c9ab
 8d62bd2e50b49b2">  171</a></span>&#160;  <span class="keyword">typedef</span> <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce&lt;void(const Future&lt;T&gt;</a>&amp;)&gt; <a class="code" href="classlambda_1_1CallableOnce.html">AnyCallback</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;  <span class="comment">// Installs callbacks for the specified events and returns a const</span></div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;  <span class="comment">// reference to &#39;this&#39; in order to easily support chaining.</span></div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; onAbandoned(AbandonedCallback&amp;&amp; callback) <span class="keyword">const</spa
 n>;</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; onDiscard(DiscardCallback&amp;&amp; callback) <span class="keyword">const</span>;</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; onReady(ReadyCallback&amp;&amp; callback) <span class="keyword">const</span>;</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; onFailed(FailedCallback&amp;&amp; callback) <span class="keyword">const</span>;</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.
 html">Future&lt;T&gt;</a>&amp; onDiscarded(DiscardedCallback&amp;&amp; callback) <span class="keyword">const</span>;</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; onAny(<a class="code" href="classlambda_1_1CallableOnce.html">AnyCallback</a>&amp;&amp; callback) <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="comment">// TODO(benh): Add onReady, onFailed, onAny for _Deferred&lt;F&gt; where F</span></div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;  <span class="comment">// is not expected.</span></div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;</div><div class="line"><a name="l00185"></a><span class="li
 neno">  185</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> F&gt;</div><div class="line"><a name="l00186"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a92429370a26a7c933ddc12866101f8ce">  186</a></span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; <a class="code" href="classprocess_1_1Future.html#a92429370a26a7c933ddc12866101f8ce">onAbandoned</a>(<a class="code" href="structprocess_1_1__Deferred.html">_Deferred&lt;F&gt;</a>&amp;&amp; deferred)<span class="keyword"> const</span></div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;    <span class="keywordflow">return</span> onAbandoned(</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;        std::move(deferred
 ).<span class="keyword">operator</span> <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;<span class="keywordtype">void</span>()&gt;());</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;</div><div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> F&gt;</div><div class="line"><a name="l00193"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#aeea5927a465c7b6e7f0f8b91f1e65461">  193</a></span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; <a class="code" href="classprocess_1_1Future.html#aeea5927a465c7b6e7f0f8b91f1e65461">onDiscard</a>(<a class="code" href="structprocess_1_1__Deferred.html">_Deferred&lt;F&gt;</a>&amp;&amp; deferred)<
 span class="keyword"> const</span></div><div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;    <span class="keywordflow">return</span> onDiscard(</div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;        std::move(deferred).<span class="keyword">operator</span> <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;<span class="keywordtype">void</span>()&gt;());</div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;  }</div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;</div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> F&gt;</div><div class="line"><a name="l00200"></a><span class="lineno"><a class="line" href
 ="classprocess_1_1Future.html#a4492bc5e02252a90087bcda3a9113f66">  200</a></span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; <a class="code" href="classprocess_1_1Future.html#a4492bc5e02252a90087bcda3a9113f66">onReady</a>(<a class="code" href="structprocess_1_1__Deferred.html">_Deferred&lt;F&gt;</a>&amp;&amp; deferred)<span class="keyword"> const</span></div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;    <span class="keywordflow">return</span> onReady(</div><div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;        std::move(deferred).<span class="keyword">operator</span> <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;<span class="keywordtype">void</span>(<span class="keyword">const</span> T&amp;)&
 gt;());</div><div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;  }</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;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> F&gt;</div><div class="line"><a name="l00207"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a8af6d072946de82f639c488872ab4db8">  207</a></span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; <a class="code" href="classprocess_1_1Future.html#a8af6d072946de82f639c488872ab4db8">onFailed</a>(<a class="code" href="structprocess_1_1__Deferred.html">_Deferred&lt;F&gt;</a>&amp;&amp; deferred)<span class="keyword"> const</span></div><div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;<span class="keyword">  </span>{</div><div clas
 s="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;    <span class="keywordflow">return</span> onFailed(std::move(deferred)</div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;        .<span class="keyword">operator</span> <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;<span class="keywordtype">void</span>(<span class="keyword">const</span> std::string&amp;)&gt;());</div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;  }</div><div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;</div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> F&gt;</div><div class="line"><a name="l00214"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a9ed881404620ba5d7a145b2f9c2be008">  214</a></span>&#160;  <span class="keyword">cons
 t</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; <a class="code" href="classprocess_1_1Future.html#a9ed881404620ba5d7a145b2f9c2be008">onDiscarded</a>(<a class="code" href="structprocess_1_1__Deferred.html">_Deferred&lt;F&gt;</a>&amp;&amp; deferred)<span class="keyword"> const</span></div><div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;    <span class="keywordflow">return</span> onDiscarded(</div><div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;        std::move(deferred).<span class="keyword">operator</span> <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;<span class="keywordtype">void</span>()&gt;());</div><div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;  }</div><div class="line"><a name="l00219"></a><span cla
 ss="lineno">  219</span>&#160;</div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> F&gt;</div><div class="line"><a name="l00221"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#ab753c0730005edaef998bf8982f67e2a">  221</a></span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; <a class="code" href="classprocess_1_1Future.html#ab753c0730005edaef998bf8982f67e2a">onAny</a>(<a class="code" href="structprocess_1_1__Deferred.html">_Deferred&lt;F&gt;</a>&amp;&amp; deferred)<span class="keyword"> const</span></div><div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    <span class="keywordflow">return</span> onAny(std::move(deferred)</div><div cl
 ass="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;        .<span class="keyword">operator</span> <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;<span class="keywordtype">void</span>(<span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp;)&gt;());</div><div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;  }</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">private</span>:</div><div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;  <span class="comment">// We use the &#39;Prefer&#39; and &#39;LessPrefer&#39; structs as a way to prefer</span></div><div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;  <span class="comment">// one function over the other when doing
  SFINAE for the &#39;onReady&#39;,</span></div><div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;  <span class="comment">// &#39;onFailed&#39;, &#39;onAny&#39;, and &#39;then&#39; functions. In each of these cases</span></div><div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;  <span class="comment">// we prefer calling the version of the functor that takes in an</span></div><div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;  <span class="comment">// argument (i.e., &#39;const T&amp;&#39; for &#39;onReady&#39; and &#39;then&#39; and &#39;const</span></div><div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;  <span class="comment">// std::string&amp;&#39; for &#39;onFailed&#39;), but we allow functors that don&#39;t</span></div><div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;  <span class="comment">// care about the argument. We don&#39;t need to 
 do this for</span></div><div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;  <span class="comment">// &#39;onDiscard&#39;, &#39;onDiscarded&#39; or &#39;onAbandoned&#39; because they don&#39;t</span></div><div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;  <span class="comment">// take an argument.</span></div><div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;  <span class="keyword">struct </span>LessPrefer {};</div><div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;  <span class="keyword">struct </span>Prefer : LessPrefer {};</div><div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;</div><div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;  <a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">template &lt;typename F, typename = typename result_of&lt;F(const T&amp;)&gt;::type</a>&gt
 ;</div><div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; onReady(F&amp;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>, Prefer)<span class="keyword"> const</span></div><div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;    <span class="keywordflow">return</span> onReady(<a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;<span class="keywordtype">void</span>(<span class="keyword">const</span> T&amp;)&gt;(</div><div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;        <a class="code" href="namespacelambda.html#a67028306e65f852e64b8a4b7715803d2">lambda::partial</a>(</div><div class="line"><a name="l00245"
 ></a><span class="lineno">  245</span>&#160;            [](<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; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>, <span class="keyword">const</span> T&amp; t) {</div><div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;              std::move(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)(t);</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;            std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>),</div><div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;            lambda::_1)));</div><div class="line">
 <a name="l00250"></a><span class="lineno">  250</span>&#160;  }</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="comment">// This is the less preferred `onReady`, we prefer the `onReady` method which</span></div><div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;  <span class="comment">// has `f` taking a `const T&amp;` parameter. Unfortunately, to complicate</span></div><div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;  <span class="comment">// matters, if `F` is the result of a `std::bind` expression we need to SFINAE</span></div><div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;  <span class="comment">// out this version of `onReady` and force the use of the preferred `onReady`</span></div><div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;
   <span class="comment">// (which works because `std::bind` will just ignore the `const T&amp;` argument).</span></div><div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;  <span class="comment">// This is necessary because Visual Studio 2015 doesn&#39;t support using the</span></div><div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;  <span class="comment">// `std::bind` call operator with `result_of` as it&#39;s technically not a</span></div><div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;  <span class="comment">// requirement by the C++ standard.</span></div><div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;  <span class="keyword">template</span> &lt;</div><div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;      <span class="keyword">typename</span> F,</div><div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;      <spa
 n class="keyword">typename</span> = <span class="keyword">typename</span> result_of&lt;<span class="keyword">typename</span> std::enable_if&lt;</div><div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;          !<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">std::is_bind_expression&lt;typename std::decay&lt;F&gt;::type</a>&gt;::value,</div><div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;          F&gt;<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a>()&gt;<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a>&gt;</div><div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; onReady(F&amp;&amp; <a class="code" href="namespaceprocess.html#a62d533
 3e8ec1817c249cf83e15d568b4">f</a>, LessPrefer)<span class="keyword"> const</span></div><div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;    <span class="keywordflow">return</span> onReady(<a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;<span class="keywordtype">void</span>(<span class="keyword">const</span> T&amp;)&gt;(</div><div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;        <a class="code" href="namespacelambda.html#a67028306e65f852e64b8a4b7715803d2">lambda::partial</a>(</div><div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;            [](<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; <a class="code" href="namespacepr
 ocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>, <span class="keyword">const</span> T&amp;) {</div><div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;              std::move(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)();</div><div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;            },</div><div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;            std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>),</div><div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;            lambda::_1)));</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">  275</span>&#160;</div><div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;  <a class="code" href="namespacemeso
 s_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">template &lt;typename F, typename = typename result_of&lt;F(const std::string&amp;)&gt;::type</a>&gt; <span class="comment">// NOLINT(whitespace/line_length)</span></div><div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; onFailed(F&amp;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>, Prefer)<span class="keyword"> const</span></div><div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;    <span class="keywordflow">return</span> onFailed(<a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;<span class="keywordtype">void</span>(<span class="keyword">const</span> std::string&amp;)
 &gt;(</div><div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;        <a class="code" href="namespacelambda.html#a67028306e65f852e64b8a4b7715803d2">lambda::partial</a>(</div><div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;            [](<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; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>, <span class="keyword">const</span> std::string&amp; message) {</div><div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;              std::move(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)(message);</div><div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;            },</div><div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#1
 60;            std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>),</div><div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;            lambda::_1)));</div><div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;  }</div><div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;</div><div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;  <span class="comment">// Refer to the less preferred version of `onReady` for why these SFINAE</span></div><div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;  <span class="comment">// conditions are necessary.</span></div><div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;  <span class="keyword">template</span> &lt;</div><div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;      <span class="keyword">typename</span> F,</div
 ><div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;      <span class="keyword">typename</span> = <span class="keyword">typename</span> result_of&lt;<span class="keyword">typename</span> std::enable_if&lt;</div><div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;          !<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">std::is_bind_expression&lt;typename std::decay&lt;F&gt;::type</a>&gt;::value,</div><div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;          F&gt;<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a>()&gt;<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a>&gt;</div><div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&
 lt;T&gt;</a>&amp; onFailed(F&amp;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>, LessPrefer)<span class="keyword"> const</span></div><div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;    <span class="keywordflow">return</span> onFailed(<a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;<span class="keywordtype">void</span>(<span class="keyword">const</span> std::string&amp;)&gt;(</div><div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;        <a class="code" href="namespacelambda.html#a67028306e65f852e64b8a4b7715803d2">lambda::partial</a>(</div><div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;            [](<span class="keyword">typename</span> <a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2
 642db514496ba8380776487fba">std::decay&lt;F&gt;::type</a>&amp;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>, <span class="keyword">const</span> std::string&amp;) <span class="keyword">mutable</span> {</div><div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;              std::move(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)();</div><div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;            },</div><div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;            std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>),</div><div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;            lambda::_1)));</div><div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;  }</div><div class="line"><a name="l00305"></a><span class=
 "lineno">  305</span>&#160;</div><div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> F, <span class="keyword">typename</span> = <span class="keyword">typename</span> result_of&lt;F(const Future&lt;T&gt;&amp;)&gt;::type&gt; <span class="comment">// NOLINT(whitespace/line_length)</span></div><div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; onAny(F&amp;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>, Prefer)<span class="keyword"> const</span></div><div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;    <span class="keywordflow">return</span> onAny(<a class="c
 ode" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;<span class="keywordtype">void</span>(<span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp;)&gt;(</div><div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;        <a class="code" href="namespacelambda.html#a67028306e65f852e64b8a4b7715803d2">lambda::partial</a>(</div><div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;            [](<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; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>, <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; future) {</div><div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;              std:
 :move(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)(future);</div><div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;            },</div><div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;            std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>),</div><div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;            lambda::_1)));</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;</div><div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;  <span class="comment">// Refer to the less preferred version of `onReady` for why these SFINAE</span></div><div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;  <span class="comment">// conditions are n
 ecessary.</span></div><div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;  <span class="keyword">template</span> &lt;</div><div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;      <span class="keyword">typename</span> F,</div><div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;      <span class="keyword">typename</span> = <span class="keyword">typename</span> result_of&lt;<span class="keyword">typename</span> std::enable_if&lt;</div><div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;          !<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">std::is_bind_expression&lt;typename std::decay&lt;F&gt;::type</a>&gt;::value,</div><div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;          F&gt;<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a>()&gt;<a class=
 "code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a>&gt;</div><div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; onAny(F&amp;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>, LessPrefer)<span class="keyword"> const</span></div><div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;    <span class="keywordflow">return</span> onAny(<a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;<span class="keywordtype">void</span>(<span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp;)&gt;(</div><div class="line"><a name="l00328"></a><span class="line
 no">  328</span>&#160;        <a class="code" href="namespacelambda.html#a67028306e65f852e64b8a4b7715803d2">lambda::partial</a>(</div><div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;            [](<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; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>, <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp;) {</div><div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;              std::move(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)();</div><div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;            },</div><div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;            std::for
 ward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>),</div><div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;            lambda::_1)));</div><div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;  }</div><div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;</div><div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;<span class="keyword">public</span>:</div><div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> F&gt;</div><div class="line"><a name="l00338"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a613272cbaf42a527d3473b2eb1c70e5d">  338</a></span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; <a class="code" href="classprocess_1_1F
 uture.html#a613272cbaf42a527d3473b2eb1c70e5d">onAbandoned</a>(F&amp;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)<span class="keyword"> const</span></div><div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;    <span class="keywordflow">return</span> onAbandoned(<a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;<span class="keywordtype">void</span>()&gt;(</div><div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;        <a class="code" href="namespacelambda.html#a67028306e65f852e64b8a4b7715803d2">lambda::partial</a>(</div><div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;            [](<span class="keyword">typename</span> <a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fb
 a">std::decay&lt;F&gt;::type</a>&amp;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>) {</div><div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;              std::move(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)();</div><div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;            },</div><div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;            std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>))));</div><div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;  }</div><div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;</div><div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> F&gt;</div><div class="line">
 <a name="l00349"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a907cb66509cf2e07bff8cf919507f745">  349</a></span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; <a class="code" href="classprocess_1_1Future.html#a907cb66509cf2e07bff8cf919507f745">onDiscard</a>(F&amp;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)<span class="keyword"> const</span></div><div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;    <span class="keywordflow">return</span> onDiscard(<a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;<span class="keywordtype">void</span>()&gt;(</div><div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;        <a class="code" href="namespac
 elambda.html#a67028306e65f852e64b8a4b7715803d2">lambda::partial</a>(</div><div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;            [](<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; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>) {</div><div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;              std::move(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)();</div><div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;            },</div><div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;            std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>))));</div><div class="line"><a name="l00357"></a><span class="lineno">  3
 57</span>&#160;  }</div><div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;</div><div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> F&gt;</div><div class="line"><a name="l00360"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#ad002735b3459454f81f77bc9604903ba">  360</a></span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; <a class="code" href="classprocess_1_1Future.html#ad002735b3459454f81f77bc9604903ba">onReady</a>(F&amp;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)<span class="keyword"> const</span></div><div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;    <span
  class="keywordflow">return</span> onReady(std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>), Prefer());</div><div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;  }</div><div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;</div><div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> F&gt;</div><div class="line"><a name="l00366"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a8c5395e292096cc9e91047ab6958564a">  366</a></span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; <a class="code" href="classprocess_1_1Future.html#a8c5395e292096cc9e91047ab6958564a">onFailed</a>(F&amp;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)<span class=
 "keyword"> const</span></div><div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;    <span class="keywordflow">return</span> onFailed(std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>), Prefer());</div><div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;  }</div><div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;</div><div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> F&gt;</div><div class="line"><a name="l00372"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a3630c865b86819b18907a8f60c948add">  372</a></span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html"
 >Future&lt;T&gt;</a>&amp; <a class="code" href="classprocess_1_1Future.html#a3630c865b86819b18907a8f60c948add">onDiscarded</a>(F&amp;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)<span class="keyword"> const</span></div><div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;    <span class="keywordflow">return</span> onDiscarded(<a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;<span class="keywordtype">void</span>()&gt;(</div><div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;        <a class="code" href="namespacelambda.html#a67028306e65f852e64b8a4b7715803d2">lambda::partial</a>(</div><div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;            [](<span class="keyword">typename</span> <a class="code" href="names
 pacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">std::decay&lt;F&gt;::type</a>&amp;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>) {</div><div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;              std::move(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)();</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;            std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>))));</div><div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;  }</div><div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;</div><div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;  <span class="keyword">template</span> &lt;<s
 pan class="keyword">typename</span> F&gt;</div><div class="line"><a name="l00383"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a79919e2b8fded40f30f720c521c98ded">  383</a></span>&#160;  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future&lt;T&gt;</a>&amp; <a class="code" href="classprocess_1_1Future.html#a79919e2b8fded40f30f720c521c98ded">onAny</a>(F&amp;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)<span class="keyword"> const</span></div><div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;    <span class="keywordflow">return</span> onAny(std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>), Prefer());</div><div class="line"><a name="l00386"></a><span class="lineno">  386</s
 pan>&#160;  }</div><div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;</div><div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;  <span class="comment">// Installs callbacks that get executed when this future is ready</span></div><div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;  <span class="comment">// and associates the result of the callback with the future that is</span></div><div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;  <span class="comment">// returned to the caller (which may be of a different type).</span></div><div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> X&gt;</div><div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;  <a class="code" href="classprocess_1_1Future.html">Future&lt;X&gt;</a> <a class="code" href="namespacepr
 ocess_1_1internal.html#a7885011cf6470b707294a6ef4ec7a0a6">then</a>(<a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;<a class="code" href="classprocess_1_1Future.html">Future&lt;X&gt;</a>(<span class="keyword">const</span> T&amp;)&gt; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>) <span class="keyword">const</span>;</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;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> X&gt;</div><div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;  <a class="code" href="classprocess_1_1Future.html">Future&lt;X&gt;</a> <a class="code" href="namespaceprocess_1_1internal.html#a7885011cf6470b707294a6ef4ec7a0a6">then</a>(<a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;X(<span cla
 ss="keyword">const</span> T&amp;)&gt; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>) <span class="keyword">const</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;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> X&gt;</div><div class="line"><a name="l00398"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a00e8cb9299d48b5b59fba301894b019f">  398</a></span>&#160;  <a class="code" href="classprocess_1_1Future.html">Future&lt;X&gt;</a> <a class="code" href="classprocess_1_1Future.html#a00e8cb9299d48b5b59fba301894b019f">then</a>(<a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;<a class="code" href="classprocess_1_1Future.html">Future&lt;X&gt;</a>()&gt; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</
 a>)<span class="keyword"> const</span></div><div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="namespaceprocess_1_1internal.html#a7885011cf6470b707294a6ef4ec7a0a6">then</a>(<a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;<a class="code" href="classprocess_1_1Future.html">Future&lt;X&gt;</a>(<span class="keyword">const</span> T&amp;)&gt;(</div><div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;        <a class="code" href="namespacelambda.html#a67028306e65f852e64b8a4b7715803d2">lambda::partial</a>(std::move(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>))));</div><div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;  }</div><div class="line"><a name="l004
 03"></a><span class="lineno">  403</span>&#160;</div><div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> X&gt;</div><div class="line"><a name="l00405"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a5fb522d745a7f4f9c1b96fa9dfde0815">  405</a></span>&#160;  <a class="code" href="classprocess_1_1Future.html">Future&lt;X&gt;</a> <a class="code" href="classprocess_1_1Future.html#a5fb522d745a7f4f9c1b96fa9dfde0815">then</a>(<a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;X()&gt; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)<span class="keyword"> const</span></div><div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;    <span class="keywordflo
 w">return</span> <a class="code" href="namespaceprocess_1_1internal.html#a7885011cf6470b707294a6ef4ec7a0a6">then</a>(<a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a>&lt;X(<span class="keyword">const</span> T&amp;)&gt;(</div><div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;        <a class="code" href="namespacelambda.html#a67028306e65f852e64b8a4b7715803d2">lambda::partial</a>(std::move(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>))));</div><div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;  }</div><div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;</div><div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;<span class="keyword">private</span>:</div><div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;  <span class="keyword">template</span> &lt;</div><div class="line"><a name="l0041
 3"></a><span class="lineno">  413</span>&#160;      <span class="keyword">typename</span> F,</div><div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;      <span class="keyword">typename</span> X =</div><div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;        <span class="keyword">typename</span> <a class="code" href="structprocess_1_1internal_1_1unwrap.html">internal::unwrap&lt;typename result_of&lt;F(const T&amp;)&gt;::type</a>&gt;<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a>&gt;</div><div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;  <a class="code" href="classprocess_1_1Future.html">Future&lt;X&gt;</a> <a class="code" href="namespaceprocess_1_1internal.html#a7885011cf6470b707294a6ef4ec7a0a6">then</a>(<a class="code" href="structprocess_1_1__Deferred.html">_Deferred&lt;F&gt;</a>&amp;&amp; <a class="code" href="namespaceprocess.html#a62d53
 33e8ec1817c249cf83e15d568b4">f</a>, Prefer)<span class="keyword"> const</span></div><div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;    <span class="comment">// note the then&lt;X&gt; is necessary to not have an infinite loop with</span></div><div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;    <span class="comment">// then(F&amp;&amp; f)</span></div><div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;    <span class="keywordflow">return</span> then&lt;X&gt;(</div><div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;        std::move(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>).operator <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce&lt;Future&lt;X&gt;</a>(<span class="keyword">const</span> T
 &amp;)&gt;());</div><div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;  }</div><div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;</div><div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;  <span class="comment">// Refer to the less preferred version of `onReady` for why these SFINAE</span></div><div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;  <span class="comment">// conditions are necessary.</span></div><div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;  <span class="keyword">template</span> &lt;</div><div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;      <span class="keyword">typename</span> F,</div><div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;      <span class="keyword">typename</span> X = <span class="keyword">typename</span> <a class="code" href="structprocess_1_1internal_1_1unw
 rap.html">internal::unwrap</a>&lt;</div><div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;          <span class="keyword">typename</span> result_of&lt;<span class="keyword">typename</span> std::enable_if&lt;</div><div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;              !<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">std::is_bind_expression&lt;typename std::decay&lt;F&gt;::type</a>&gt;::value,</div><div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;              F&gt;<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a>()&gt;<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a>&gt;<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a>&gt;</div><div class="line"><a name="l00432"></a><span class="l
 ineno">  432</span>&#160;  <a class="code" href="classprocess_1_1Future.html">Future&lt;X&gt;</a> <a class="code" href="namespaceprocess_1_1internal.html#a7885011cf6470b707294a6ef4ec7a0a6">then</a>(<a class="code" href="structprocess_1_1__Deferred.html">_Deferred&lt;F&gt;</a>&amp;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>, LessPrefer)<span class="keyword"> const</span></div><div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;    <span class="keywordflow">return</span> then&lt;X&gt;(std::move(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>).operator <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce&lt;Future&lt;X&gt;</a>()&gt;());</div><div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;  }</div><div class="l
 ine"><a name="l00436"></a><span class="lineno">  436</span>&#160;</div><div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;  <a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">template &lt;typename F, typename X = typename internal::unwrap&lt;typename result_of&lt;F(const T&amp;)&gt;::type</a>&gt;<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a>&gt; <span class="comment">// NOLINT(whitespace/line_length)</span></div><div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;  <a class="code" href="classprocess_1_1Future.html">Future&lt;X&gt;</a> <a class="code" href="namespaceprocess_1_1internal.html#a7885011cf6470b707294a6ef4ec7a0a6">then</a>(F&amp;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>, Prefer)<span class="keyword"> const</span></div><div class="line"><a name="l00439"></a><span class="li
 neno">  439</span>&#160;<span class="keyword">  </span>{</div><div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;    <span class="keywordflow">return</span> then&lt;X&gt;(</div><div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;        <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce&lt;Future&lt;X&gt;</a>(<span class="keyword">const</span> T&amp;)&gt;(std::forward&lt;F&gt;(<a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>)));</div><div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;  }</div><div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;</div><div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;  <span class="comment">// Refer to the less preferred version of `onReady` for why these SFINAE</span></div><div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;  <span 
 class="comment">// conditions are necessary.</span></div><div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;  <span class="keyword">template</span> &lt;</div><div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;      <span class="keyword">typename</span> F,</div><div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;      <span class="keyword">typename</span> X = <span class="keyword">typename</span> <a class="code" href="structprocess_1_1internal_1_1unwrap.html">internal::unwrap</a>&lt;</div><div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;          <span class="keyword">typename</span> result_of&lt;<span class="keyword">typename</span> std::enable_if&lt;</div><div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;              !<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">std::is_bind_expression&lt;typename
  std::decay&lt;F&gt;::type</a>&gt;::value,</div><div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;              F&gt;<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a>()&gt;<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a>&gt;<a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a>&gt;</div><div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;  <a class="code" href="classprocess_1_1Future.html">Future&lt;X&gt;</a> <a class="code" href="namespaceprocess_1_1internal.html#a7885011cf6470b707294a6ef4ec7a0a6">then</a>(F&amp;&amp; <a class="code" href="namespaceprocess.html#a62d5333e8ec1817c249cf83e15d568b4">f</a>, LessPrefer)<span class="keyword"> const</span></div><div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;<span class="keyword">  </span>{</div>
 <div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;    <span class="keywordflow">return</span> then&lt;X&gt;(<a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce&lt;F

<TRUNCATED>