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Posted to commits@mesos.apache.org by gi...@apache.org on 2017/09/28 06:19:54 UTC
[4/5] mesos-site git commit: Updated the website built from mesos
SHA: d476410.
http://git-wip-us.apache.org/repos/asf/mesos-site/blob/8c3db950/content/api/latest/c++/future_8hpp_source.html
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diff --git a/content/api/latest/c++/future_8hpp_source.html b/content/api/latest/c++/future_8hpp_source.html
index cd1d723..3c373a6 100644
--- a/content/api/latest/c++/future_8hpp_source.html
+++ b/content/api/latest/c++/future_8hpp_source.html
@@ -934,857 +934,856 @@
<div class="line"><a name="l00880"></a><span class="lineno"> 880</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
<div class="line"><a name="l00881"></a><span class="lineno"> 881</span> <span class="keywordtype">bool</span> <a class="code" href="classprocess_1_1Promise.html#a8f50fcfd7ddb6dd39ec2cd468377cd5d">Promise<T>::discard</a>(Future<T> future)</div>
<div class="line"><a name="l00882"></a><span class="lineno"> 882</span> {</div>
-<div class="line"><a name="l00883"></a><span class="lineno"> 883</span>  std::shared_ptr<typename Future<T>::Data> data = future.data;</div>
+<div class="line"><a name="l00883"></a><span class="lineno"> 883</span>  <span class="keywordtype">bool</span> result = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00884"></a><span class="lineno"> 884</span> </div>
-<div class="line"><a name="l00885"></a><span class="lineno"> 885</span>  <span class="keywordtype">bool</span> result = <span class="keyword">false</span>;</div>
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-<div class="line"><a name="l00888"></a><span class="lineno"> 888</span>  <span class="keywordflow">if</span> (data->state == Future<T>::PENDING) {</div>
-<div class="line"><a name="l00889"></a><span class="lineno"> 889</span>  data->state = Future<T>::DISCARDED;</div>
-<div class="line"><a name="l00890"></a><span class="lineno"> 890</span>  result = <span class="keyword">true</span>;</div>
-<div class="line"><a name="l00891"></a><span class="lineno"> 891</span>  }</div>
-<div class="line"><a name="l00892"></a><span class="lineno"> 892</span>  }</div>
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-<div class="line"><a name="l00894"></a><span class="lineno"> 894</span>  <span class="comment">// Invoke all callbacks associated with this future being</span></div>
-<div class="line"><a name="l00895"></a><span class="lineno"> 895</span>  <span class="comment">// DISCARDED. We don't need a lock because the state is now in</span></div>
-<div class="line"><a name="l00896"></a><span class="lineno"> 896</span>  <span class="comment">// DISCARDED so there should not be any concurrent modifications.</span></div>
-<div class="line"><a name="l00897"></a><span class="lineno"> 897</span>  <span class="keywordflow">if</span> (result) {</div>
-<div class="line"><a name="l00898"></a><span class="lineno"> 898</span>  <a class="code" href="namespaceprocess_1_1internal.html#a7ab45b8fc1010b947a370e51b463e82f">internal::run</a>(future.data->onDiscardedCallbacks);</div>
-<div class="line"><a name="l00899"></a><span class="lineno"> 899</span>  <a class="code" href="namespaceprocess_1_1internal.html#a7ab45b8fc1010b947a370e51b463e82f">internal::run</a>(future.data->onAnyCallbacks, future);</div>
-<div class="line"><a name="l00900"></a><span class="lineno"> 900</span> </div>
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-<div class="line"><a name="l00902"></a><span class="lineno"> 902</span>  }</div>
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+<div class="line"><a name="l00886"></a><span class="lineno"> 886</span>  <span class="keywordflow">if</span> (future.data->state == Future<T>::PENDING) {</div>
+<div class="line"><a name="l00887"></a><span class="lineno"> 887</span>  future.data->state = Future<T>::DISCARDED;</div>
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+<div class="line"><a name="l00889"></a><span class="lineno"> 889</span>  }</div>
+<div class="line"><a name="l00890"></a><span class="lineno"> 890</span>  }</div>
+<div class="line"><a name="l00891"></a><span class="lineno"> 891</span> </div>
+<div class="line"><a name="l00892"></a><span class="lineno"> 892</span>  <span class="comment">// Invoke all callbacks associated with this future being</span></div>
+<div class="line"><a name="l00893"></a><span class="lineno"> 893</span>  <span class="comment">// DISCARDED. We don't need a lock because the state is now in</span></div>
+<div class="line"><a name="l00894"></a><span class="lineno"> 894</span>  <span class="comment">// DISCARDED so there should not be any concurrent modifications to</span></div>
+<div class="line"><a name="l00895"></a><span class="lineno"> 895</span>  <span class="comment">// the callbacks.</span></div>
+<div class="line"><a name="l00896"></a><span class="lineno"> 896</span>  <span class="keywordflow">if</span> (result) {</div>
+<div class="line"><a name="l00897"></a><span class="lineno"> 897</span>  <span class="comment">// NOTE: we rely on the fact that we have `future` to protect</span></div>
+<div class="line"><a name="l00898"></a><span class="lineno"> 898</span>  <span class="comment">// ourselves from one of the callbacks erroneously deleting the</span></div>
+<div class="line"><a name="l00899"></a><span class="lineno"> 899</span>  <span class="comment">// future. In `Future::_set()` and `Future::fail()` we have to</span></div>
+<div class="line"><a name="l00900"></a><span class="lineno"> 900</span>  <span class="comment">// explicitly take a copy to protect ourselves.</span></div>
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+<div class="line"><a name="l00902"></a><span class="lineno"> 902</span>  <a class="code" href="namespaceprocess_1_1internal.html#a7ab45b8fc1010b947a370e51b463e82f">internal::run</a>(future.data->onAnyCallbacks, future);</div>
<div class="line"><a name="l00903"></a><span class="lineno"> 903</span> </div>
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<div class="line"><a name="l00906"></a><span class="lineno"> 906</span> </div>
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-<div class="line"><a name="l00910"></a><span class="lineno"> 910</span> {</div>
-<div class="line"><a name="l00911"></a><span class="lineno"> 911</span>  <a class="code" href="classprocess_1_1Future.html">Future<T></a> future;</div>
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-<div class="line"><a name="l00914"></a><span class="lineno"> 914</span> }</div>
-<div class="line"><a name="l00915"></a><span class="lineno"> 915</span> </div>
-<div class="line"><a name="l00916"></a><span class="lineno"> 916</span> </div>
-<div class="line"><a name="l00917"></a><span class="lineno"> 917</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
-<div class="line"><a name="l00918"></a><span class="lineno"> 918</span> <a class="code" href="classprocess_1_1Future.html">Future<T>::Data::Data</a>()</div>
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-<div class="line"><a name="l00938"></a><span class="lineno"> 938</span>  : data(new Data()) {}</div>
-<div class="line"><a name="l00939"></a><span class="lineno"> 939</span> </div>
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-<div class="line"><a name="l00948"></a><span class="lineno"> 948</span> </div>
-<div class="line"><a name="l00949"></a><span class="lineno"> 949</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
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+<div class="line"><a name="l01007"></a><span class="lineno"> 1007</span> </div>
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+<div class="line"><a name="l01009"></a><span class="lineno"> 1009</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
+<div class="line"><a name="l01010"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#ad4dabb526ca4f366ac1fb06192a40d0f"> 1010</a></span> <span class="keywordtype">bool</span> <a class="code" href="classprocess_1_1Future.html#ad4dabb526ca4f366ac1fb06192a40d0f">Future<T>::operator==</a>(<span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future<T></a>& that)<span class="keyword"> const</span></div>
+<div class="line"><a name="l01011"></a><span class="lineno"> 1011</span> <span class="keyword"></span>{</div>
+<div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>  <span class="keywordflow">return</span> data == that.data;</div>
+<div class="line"><a name="l01013"></a><span class="lineno"> 1013</span> }</div>
+<div class="line"><a name="l01014"></a><span class="lineno"> 1014</span> </div>
+<div class="line"><a name="l01015"></a><span class="lineno"> 1015</span> </div>
+<div class="line"><a name="l01016"></a><span class="lineno"> 1016</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
+<div class="line"><a name="l01017"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a1e09668bb029e2e3cc3a2d9cf1075812"> 1017</a></span> <span class="keywordtype">bool</span> <a class="code" href="classprocess_1_1Future.html#a1e09668bb029e2e3cc3a2d9cf1075812">Future<T>::operator!=</a>(<span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future<T></a>& that)<span class="keyword"> const</span></div>
+<div class="line"><a name="l01018"></a><span class="lineno"> 1018</span> <span class="keyword"></span>{</div>
+<div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>  <span class="keywordflow">return</span> !(*<span class="keyword">this</span> == that);</div>
+<div class="line"><a name="l01020"></a><span class="lineno"> 1020</span> }</div>
+<div class="line"><a name="l01021"></a><span class="lineno"> 1021</span> </div>
+<div class="line"><a name="l01022"></a><span class="lineno"> 1022</span> </div>
+<div class="line"><a name="l01023"></a><span class="lineno"> 1023</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
+<div class="line"><a name="l01024"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a01597d58e57a7384eed5a56ccf797a0e"> 1024</a></span> <span class="keywordtype">bool</span> <a class="code" href="classprocess_1_1Future.html#a01597d58e57a7384eed5a56ccf797a0e">Future<T>::operator<</a>(<span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future<T></a>& that)<span class="keyword"> const</span></div>
+<div class="line"><a name="l01025"></a><span class="lineno"> 1025</span> <span class="keyword"></span>{</div>
+<div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>  <span class="keywordflow">return</span> data < that.data;</div>
+<div class="line"><a name="l01027"></a><span class="lineno"> 1027</span> }</div>
+<div class="line"><a name="l01028"></a><span class="lineno"> 1028</span> </div>
+<div class="line"><a name="l01029"></a><span class="lineno"> 1029</span> </div>
+<div class="line"><a name="l01030"></a><span class="lineno"> 1030</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
+<div class="line"><a name="l01031"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a4012f3faa6191fc13874dca62c14ced0"> 1031</a></span> <span class="keywordtype">bool</span> <a class="code" href="classprocess_1_1Future.html#a4012f3faa6191fc13874dca62c14ced0">Future<T>::discard</a>()</div>
+<div class="line"><a name="l01032"></a><span class="lineno"> 1032</span> {</div>
+<div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>  <span class="keywordtype">bool</span> result = <span class="keyword">false</span>;</div>
+<div class="line"><a name="l01034"></a><span class="lineno"> 1034</span> </div>
+<div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>  std::vector<DiscardCallback> callbacks;</div>
+<div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>  <span class="keyword">synchronized</span> (data->lock) {</div>
+<div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>  <span class="keywordflow">if</span> (!data->discard && data->state == PENDING) {</div>
+<div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>  result = data->discard = <span class="keyword">true</span>;</div>
+<div class="line"><a name="l01039"></a><span class="lineno"> 1039</span> </div>
+<div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>  callbacks.swap(data->onDiscardCallbacks);</div>
+<div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>  }</div>
+<div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>  }</div>
+<div class="line"><a name="l01043"></a><span class="lineno"> 1043</span> </div>
+<div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>  <span class="comment">// Invoke all callbacks associated with doing a discard on this</span></div>
+<div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>  <span class="comment">// future. The callbacks get destroyed when we exit from the</span></div>
+<div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>  <span class="comment">// function.</span></div>
+<div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>  <span class="keywordflow">if</span> (result) {</div>
+<div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>  <a class="code" href="namespaceprocess_1_1internal.html#a7ab45b8fc1010b947a370e51b463e82f">internal::run</a>(callbacks);</div>
+<div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>  }</div>
+<div class="line"><a name="l01050"></a><span class="lineno"> 1050</span> </div>
+<div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>  <span class="keywordflow">return</span> result;</div>
+<div class="line"><a name="l01052"></a><span class="lineno"> 1052</span> }</div>
+<div class="line"><a name="l01053"></a><span class="lineno"> 1053</span> </div>
+<div class="line"><a name="l01054"></a><span class="lineno"> 1054</span> </div>
+<div class="line"><a name="l01055"></a><span class="lineno"> 1055</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
+<div class="line"><a name="l01056"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#af23884cf963eb5ec061595eb2e288903"> 1056</a></span> <span class="keywordtype">bool</span> <a class="code" href="classprocess_1_1Future.html#af23884cf963eb5ec061595eb2e288903">Future<T>::isPending</a>()<span class="keyword"> const</span></div>
+<div class="line"><a name="l01057"></a><span class="lineno"> 1057</span> <span class="keyword"></span>{</div>
+<div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>  <span class="keywordflow">return</span> data->state == PENDING;</div>
<div class="line"><a name="l01059"></a><span class="lineno"> 1059</span> }</div>
<div class="line"><a name="l01060"></a><span class="lineno"> 1060</span> </div>
<div class="line"><a name="l01061"></a><span class="lineno"> 1061</span> </div>
<div class="line"><a name="l01062"></a><span class="lineno"> 1062</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
-<div class="line"><a name="l01063"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#af23884cf963eb5ec061595eb2e288903"> 1063</a></span> <span class="keywordtype">bool</span> <a class="code" href="classprocess_1_1Future.html#af23884cf963eb5ec061595eb2e288903">Future<T>::isPending</a>()<span class="keyword"> const</span></div>
+<div class="line"><a name="l01063"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a68f241961e700d0cecf982d9cc0043d7"> 1063</a></span> <span class="keywordtype">bool</span> <a class="code" href="classprocess_1_1Future.html#a68f241961e700d0cecf982d9cc0043d7">Future<T>::isReady</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l01064"></a><span class="lineno"> 1064</span> <span class="keyword"></span>{</div>
-<div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>  <span class="keywordflow">return</span> data->state == PENDING;</div>
+<div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>  <span class="keywordflow">return</span> data->state == READY;</div>
<div class="line"><a name="l01066"></a><span class="lineno"> 1066</span> }</div>
<div class="line"><a name="l01067"></a><span class="lineno"> 1067</span> </div>
<div class="line"><a name="l01068"></a><span class="lineno"> 1068</span> </div>
<div class="line"><a name="l01069"></a><span class="lineno"> 1069</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
-<div class="line"><a name="l01070"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a68f241961e700d0cecf982d9cc0043d7"> 1070</a></span> <span class="keywordtype">bool</span> <a class="code" href="classprocess_1_1Future.html#a68f241961e700d0cecf982d9cc0043d7">Future<T>::isReady</a>()<span class="keyword"> const</span></div>
+<div class="line"><a name="l01070"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#abc89036db733a417b7b383b091efaf3c"> 1070</a></span> <span class="keywordtype">bool</span> <a class="code" href="classprocess_1_1Future.html#abc89036db733a417b7b383b091efaf3c">Future<T>::isDiscarded</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l01071"></a><span class="lineno"> 1071</span> <span class="keyword"></span>{</div>
-<div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>  <span class="keywordflow">return</span> data->state == READY;</div>
+<div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>  <span class="keywordflow">return</span> data->state == DISCARDED;</div>
<div class="line"><a name="l01073"></a><span class="lineno"> 1073</span> }</div>
<div class="line"><a name="l01074"></a><span class="lineno"> 1074</span> </div>
<div class="line"><a name="l01075"></a><span class="lineno"> 1075</span> </div>
<div class="line"><a name="l01076"></a><span class="lineno"> 1076</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
-<div class="line"><a name="l01077"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#abc89036db733a417b7b383b091efaf3c"> 1077</a></span> <span class="keywordtype">bool</span> <a class="code" href="classprocess_1_1Future.html#abc89036db733a417b7b383b091efaf3c">Future<T>::isDiscarded</a>()<span class="keyword"> const</span></div>
+<div class="line"><a name="l01077"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a493227e57f8848e37777b89c0f81e2ec"> 1077</a></span> <span class="keywordtype">bool</span> <a class="code" href="classprocess_1_1Future.html#a493227e57f8848e37777b89c0f81e2ec">Future<T>::isFailed</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l01078"></a><span class="lineno"> 1078</span> <span class="keyword"></span>{</div>
-<div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>  <span class="keywordflow">return</span> data->state == DISCARDED;</div>
+<div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>  <span class="keywordflow">return</span> data->state == FAILED;</div>
<div class="line"><a name="l01080"></a><span class="lineno"> 1080</span> }</div>
<div class="line"><a name="l01081"></a><span class="lineno"> 1081</span> </div>
<div class="line"><a name="l01082"></a><span class="lineno"> 1082</span> </div>
<div class="line"><a name="l01083"></a><span class="lineno"> 1083</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
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<div class="line"><a name="l01085"></a><span class="lineno"> 1085</span> <span class="keyword"></span>{</div>
-<div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>  <span class="keywordflow">return</span> data->state == FAILED;</div>
+<div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>  <span class="keywordflow">return</span> data->discard;</div>
<div class="line"><a name="l01087"></a><span class="lineno"> 1087</span> }</div>
<div class="line"><a name="l01088"></a><span class="lineno"> 1088</span> </div>
<div class="line"><a name="l01089"></a><span class="lineno"> 1089</span> </div>
-<div class="line"><a name="l01090"></a><span class="lineno"> 1090</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
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-<div class="line"><a name="l01092"></a><span class="lineno"> 1092</span> <span class="keyword"></span>{</div>
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-<div class="line"><a name="l01094"></a><span class="lineno"> 1094</span> }</div>
-<div class="line"><a name="l01095"></a><span class="lineno"> 1095</span> </div>
+<div class="line"><a name="l01090"></a><span class="lineno"> 1090</span> <span class="keyword">namespace </span>internal {</div>
+<div class="line"><a name="l01091"></a><span class="lineno"> 1091</span> </div>
+<div class="line"><a name="l01092"></a><span class="lineno"><a class="line" href="namespaceprocess_1_1internal.html#a85f4746550d4ec759218057e3c54fe41"> 1092</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceprocess_1_1internal.html#a85f4746550d4ec759218057e3c54fe41">awaited</a>(<a class="code" href="classprocess_1_1Owned.html">Owned<Latch></a> latch)</div>
+<div class="line"><a name="l01093"></a><span class="lineno"> 1093</span> {</div>
+<div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>  latch->trigger();</div>
+<div class="line"><a name="l01095"></a><span class="lineno"> 1095</span> }</div>
<div class="line"><a name="l01096"></a><span class="lineno"> 1096</span> </div>
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+<div class="line"><a name="l01097"></a><span class="lineno"> 1097</span> } <span class="comment">// namespace internal {</span></div>
<div class="line"><a name="l01098"></a><span class="lineno"> 1098</span> </div>
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-<div class="line"><a name="l01100"></a><span class="lineno"> 1100</span> {</div>
-<div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>  latch->trigger();</div>
-<div class="line"><a name="l01102"></a><span class="lineno"> 1102</span> }</div>
-<div class="line"><a name="l01103"></a><span class="lineno"> 1103</span> </div>
-<div class="line"><a name="l01104"></a><span class="lineno"> 1104</span> } <span class="comment">// namespace internal {</span></div>
-<div class="line"><a name="l01105"></a><span class="lineno"> 1105</span> </div>
-<div class="line"><a name="l01106"></a><span class="lineno"> 1106</span> </div>
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-<div class="line"><a name="l01109"></a><span class="lineno"> 1109</span> <span class="keyword"></span>{</div>
-<div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>  <span class="comment">// NOTE: We need to preemptively allocate the Latch on the stack</span></div>
-<div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>  <span class="comment">// instead of lazily create it in the critical section below because</span></div>
-<div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>  <span class="comment">// instantiating a Latch requires creating a new process (at the</span></div>
-<div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>  <span class="comment">// time of writing this comment) which might need to do some</span></div>
-<div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>  <span class="comment">// synchronization in libprocess which might deadlock if some other</span></div>
-<div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>  <span class="comment">// code in libprocess is already holding a lock and then attempts to</span></div>
-<div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>  <span class="comment">// do Promise::set (or something similar) that attempts to acquire</span></div>
-<div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>  <span class="comment">// the lock that we acquire here. This is an artifact of using</span></div>
-<div class="line"><a name="l01118"></a><span class="lineno"> 1118</span>  <span class="comment">// Future/Promise within the implementation of libprocess.</span></div>
-<div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>  <span class="comment">//</span></div>
-<div class="line"><a name="l01120"></a><span class="lineno"> 1120</span>  <span class="comment">// We mostly only call 'await' in tests so this should not be a</span></div>
-<div class="line"><a name="l01121"></a><span class="lineno"> 1121</span>  <span class="comment">// performance concern.</span></div>
-<div class="line"><a name="l01122"></a><span class="lineno"> 1122</span>  <a class="code" href="classprocess_1_1Owned.html">Owned<Latch></a> latch(<span class="keyword">new</span> <a class="code" href="classprocess_1_1Latch.html">Latch</a>());</div>
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-<div class="line"><a name="l01124"></a><span class="lineno"> 1124</span>  <span class="keywordtype">bool</span> <a class="code" href="namespaceos_1_1signals.html#a712c95e437c6ae6caa6fbc6dcce30f26">pending</a> = <span class="keyword">false</span>;</div>
+<div class="line"><a name="l01099"></a><span class="lineno"> 1099</span> </div>
+<div class="line"><a name="l01100"></a><span class="lineno"> 1100</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
+<div class="line"><a name="l01101"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a49b738b9755c0623a57e575ae2fb6431"> 1101</a></span> <span class="keywordtype">bool</span> <a class="code" href="classprocess_1_1Future.html#a49b738b9755c0623a57e575ae2fb6431">Future<T>::await</a>(<span class="keyword">const</span> <a class="code" href="classDuration.html">Duration</a>& duration)<span class="keyword"> const</span></div>
+<div class="line"><a name="l01102"></a><span class="lineno"> 1102</span> <span class="keyword"></span>{</div>
+<div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>  <span class="comment">// NOTE: We need to preemptively allocate the Latch on the stack</span></div>
+<div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>  <span class="comment">// instead of lazily create it in the critical section below because</span></div>
+<div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>  <span class="comment">// instantiating a Latch requires creating a new process (at the</span></div>
+<div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>  <span class="comment">// time of writing this comment) which might need to do some</span></div>
+<div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>  <span class="comment">// synchronization in libprocess which might deadlock if some other</span></div>
+<div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>  <span class="comment">// code in libprocess is already holding a lock and then attempts to</span></div>
+<div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>  <span class="comment">// do Promise::set (or something similar) that attempts to acquire</span></div>
+<div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>  <span class="comment">// the lock that we acquire here. This is an artifact of using</span></div>
+<div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>  <span class="comment">// Future/Promise within the implementation of libprocess.</span></div>
+<div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>  <span class="comment">//</span></div>
+<div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>  <span class="comment">// We mostly only call 'await' in tests so this should not be a</span></div>
+<div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>  <span class="comment">// performance concern.</span></div>
+<div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>  <a class="code" href="classprocess_1_1Owned.html">Owned<Latch></a> latch(<span class="keyword">new</span> <a class="code" href="classprocess_1_1Latch.html">Latch</a>());</div>
+<div class="line"><a name="l01116"></a><span class="lineno"> 1116</span> </div>
+<div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>  <span class="keywordtype">bool</span> <a class="code" href="namespaceos_1_1signals.html#a712c95e437c6ae6caa6fbc6dcce30f26">pending</a> = <span class="keyword">false</span>;</div>
+<div class="line"><a name="l01118"></a><span class="lineno"> 1118</span> </div>
+<div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>  <span class="keyword">synchronized</span> (data->lock) {</div>
+<div class="line"><a name="l01120"></a><span class="lineno"> 1120</span>  <span class="keywordflow">if</span> (data->state == PENDING) {</div>
+<div class="line"><a name="l01121"></a><span class="lineno"> 1121</span>  pending = <span class="keyword">true</span>;</div>
+<div class="line"><a name="l01122"></a><span class="lineno"> 1122</span>  data->onAnyCallbacks.push_back(<a class="code" href="namespaceprocess_1_1network.html#ad067110a4b38cc83785a43f49bf6c8e2">lambda::bind</a>(&<a class="code" href="namespaceprocess_1_1internal.html#a85f4746550d4ec759218057e3c54fe41">internal::awaited</a>, latch));</div>
+<div class="line"><a name="l01123"></a><span class="lineno"> 1123</span>  }</div>
+<div class="line"><a name="l01124"></a><span class="lineno"> 1124</span>  }</div>
<div class="line"><a name="l01125"></a><span class="lineno"> 1125</span> </div>
-<div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>  <span class="keyword">synchronized</span> (data->lock) {</div>
-<div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>  <span class="keywordflow">if</span> (data->state == PENDING) {</div>
-<div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>  pending = <span class="keyword">true</span>;</div>
-<div class="line"><a name="l01129"></a><span class="lineno"> 1129</span>  data->onAnyCallbacks.push_back(<a class="code" href="namespaceprocess_1_1network.html#ad067110a4b38cc83785a43f49bf6c8e2">lambda::bind</a>(&<a class="code" href="namespaceprocess_1_1internal.html#a85f4746550d4ec759218057e3c54fe41">internal::awaited</a>, latch));</div>
-<div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>  }</div>
-<div class="line"><a name="l01131"></a><span class="lineno"> 1131</span>  }</div>
+<div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>  <span class="keywordflow">if</span> (pending) {</div>
+<div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>  <span class="keywordflow">return</span> latch-><a class="code" href="classprocess_1_1Latch.html#a473b02733aa6a87f9ce3462d7a872414">await</a>(duration);</div>
+<div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>  }</div>
+<div class="line"><a name="l01129"></a><span class="lineno"> 1129</span> </div>
+<div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
+<div class="line"><a name="l01131"></a><span class="lineno"> 1131</span> }</div>
<div class="line"><a name="l01132"></a><span class="lineno"> 1132</span> </div>
-<div class="line"><a name="l01133"></a><span class="lineno"> 1133</span>  <span class="keywordflow">if</span> (pending) {</div>
-<div class="line"><a name="l01134"></a><span class="lineno"> 1134</span>  <span class="keywordflow">return</span> latch-><a class="code" href="classprocess_1_1Latch.html#a473b02733aa6a87f9ce3462d7a872414">await</a>(duration);</div>
-<div class="line"><a name="l01135"></a><span class="lineno"> 1135</span>  }</div>
-<div class="line"><a name="l01136"></a><span class="lineno"> 1136</span> </div>
-<div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
-<div class="line"><a name="l01138"></a><span class="lineno"> 1138</span> }</div>
-<div class="line"><a name="l01139"></a><span class="lineno"> 1139</span> </div>
+<div class="line"><a name="l01133"></a><span class="lineno"> 1133</span> </div>
+<div class="line"><a name="l01134"></a><span class="lineno"> 1134</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
+<div class="line"><a name="l01135"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#aa78977d3b585a5f5ccd682c1e9e2ddc4"> 1135</a></span> <span class="keyword">const</span> T& <a class="code" href="classprocess_1_1Future.html#aa78977d3b585a5f5ccd682c1e9e2ddc4">Future<T>::get</a>()<span class="keyword"> const</span></div>
+<div class="line"><a name="l01136"></a><span class="lineno"> 1136</span> <span class="keyword"></span>{</div>
+<div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>  <span class="keywordflow">if</span> (!isReady()) {</div>
+<div class="line"><a name="l01138"></a><span class="lineno"> 1138</span>  <a class="code" href="namespaceprocess.html#a9244f063b856adbc7182f8620b01034c">await</a>();</div>
+<div class="line"><a name="l01139"></a><span class="lineno"> 1139</span>  }</div>
<div class="line"><a name="l01140"></a><span class="lineno"> 1140</span> </div>
-<div class="line"><a name="l01141"></a><span class="lineno"> 1141</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
-<div class="line"><a name="l01142"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#aa78977d3b585a5f5ccd682c1e9e2ddc4"> 1142</a></span> <span class="keyword">const</span> T& <a class="code" href="classprocess_1_1Future.html#aa78977d3b585a5f5ccd682c1e9e2ddc4">Future<T>::get</a>()<span class="keyword"> const</span></div>
-<div class="line"><a name="l01143"></a><span class="lineno"> 1143</span> <span class="keyword"></span>{</div>
-<div class="line"><a name="l01144"></a><span class="lineno"> 1144</span>  <span class="keywordflow">if</span> (!isReady()) {</div>
-<div class="line"><a name="l01145"></a><span class="lineno"> 1145</span>  <a class="code" href="namespaceprocess.html#a9244f063b856adbc7182f8620b01034c">await</a>();</div>
+<div class="line"><a name="l01141"></a><span class="lineno"> 1141</span>  CHECK(!isPending()) << <span class="stringliteral">"Future was in PENDING after await()"</span>;</div>
+<div class="line"><a name="l01142"></a><span class="lineno"> 1142</span>  <span class="comment">// We can't use CHECK_READY here due to check.hpp depending on future.hpp.</span></div>
+<div class="line"><a name="l01143"></a><span class="lineno"> 1143</span>  <span class="keywordflow">if</span> (!isReady()) {</div>
+<div class="line"><a name="l01144"></a><span class="lineno"> 1144</span>  CHECK(!isFailed()) << <span class="stringliteral">"Future::get() but state == FAILED: "</span> << failure();</div>
+<div class="line"><a name="l01145"></a><span class="lineno"> 1145</span>  CHECK(!isDiscarded()) << <span class="stringliteral">"Future::get() but state == DISCARDED"</span>;</div>
<div class="line"><a name="l01146"></a><span class="lineno"> 1146</span>  }</div>
<div class="line"><a name="l01147"></a><span class="lineno"> 1147</span> </div>
-<div class="line"><a name="l01148"></a><span class="lineno"> 1148</span>  CHECK(!isPending()) << <span class="stringliteral">"Future was in PENDING after await()"</span>;</div>
-<div class="line"><a name="l01149"></a><span class="lineno"> 1149</span>  <span class="comment">// We can't use CHECK_READY here due to check.hpp depending on future.hpp.</span></div>
-<div class="line"><a name="l01150"></a><span class="lineno"> 1150</span>  <span class="keywordflow">if</span> (!isReady()) {</div>
-<div class="line"><a name="l01151"></a><span class="lineno"> 1151</span>  CHECK(!isFailed()) << <span class="stringliteral">"Future::get() but state == FAILED: "</span> << failure();</div>
-<div class="line"><a name="l01152"></a><span class="lineno"> 1152</span>  CHECK(!isDiscarded()) << <span class="stringliteral">"Future::get() but state == DISCARDED"</span>;</div>
-<div class="line"><a name="l01153"></a><span class="lineno"> 1153</span>  }</div>
-<div class="line"><a name="l01154"></a><span class="lineno"> 1154</span> </div>
-<div class="line"><a name="l01155"></a><span class="lineno"> 1155</span>  assert(data->result.isSome());</div>
-<div class="line"><a name="l01156"></a><span class="lineno"> 1156</span>  <span class="keywordflow">return</span> data->result.get();</div>
+<div class="line"><a name="l01148"></a><span class="lineno"> 1148</span>  assert(data->result.isSome());</div>
+<div class="line"><a name="l01149"></a><span class="lineno"> 1149</span>  <span class="keywordflow">return</span> data->result.get();</div>
+<div class="line"><a name="l01150"></a><span class="lineno"> 1150</span> }</div>
+<div class="line"><a name="l01151"></a><span class="lineno"> 1151</span> </div>
+<div class="line"><a name="l01152"></a><span class="lineno"> 1152</span> </div>
+<div class="line"><a name="l01153"></a><span class="lineno"> 1153</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
+<div class="line"><a name="l01154"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#ade35e2593ea7486d0d6cd26584960704"> 1154</a></span> <span class="keyword">const</span> T* <a class="code" href="classprocess_1_1Future.html#ade35e2593ea7486d0d6cd26584960704">Future<T>::operator-></a>()<span class="keyword"> const</span></div>
+<div class="line"><a name="l01155"></a><span class="lineno"> 1155</span> <span class="keyword"></span>{</div>
+<div class="line"><a name="l01156"></a><span class="lineno"> 1156</span>  <span class="keywordflow">return</span> &<span class="keyword">get</span>();</div>
<div class="line"><a name="l01157"></a><span class="lineno"> 1157</span> }</div>
<div class="line"><a name="l01158"></a><span class="lineno"> 1158</span> </div>
<div class="line"><a name="l01159"></a><span class="lineno"> 1159</span> </div>
<div class="line"><a name="l01160"></a><span class="lineno"> 1160</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
-<div class="line"><a name="l01161"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#ade35e2593ea7486d0d6cd26584960704"> 1161</a></span> <span class="keyword">const</span> T* <a class="code" href="classprocess_1_1Future.html#ade35e2593ea7486d0d6cd26584960704">Future<T>::operator-></a>()<span class="keyword"> const</span></div>
+<div class="line"><a name="l01161"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#ae649c56b07f44c05e4b7aa3620133ff9"> 1161</a></span> <span class="keyword">const</span> std::string& <a class="code" href="classprocess_1_1Future.html#ae649c56b07f44c05e4b7aa3620133ff9">Future<T>::failure</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l01162"></a><span class="lineno"> 1162</span> <span class="keyword"></span>{</div>
-<div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>  <span class="keywordflow">return</span> &<span class="keyword">get</span>();</div>
-<div class="line"><a name="l01164"></a><span class="lineno"> 1164</span> }</div>
-<div class="line"><a name="l01165"></a><span class="lineno"> 1165</span> </div>
+<div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>  <span class="keywordflow">if</span> (data->state != FAILED) {</div>
+<div class="line"><a name="l01164"></a><span class="lineno"> 1164</span>  <a class="code" href="abort_8hpp.html#a4d84a74fe6e4f84bc3d2f901b9e89f93">ABORT</a>(<span class="stringliteral">"Future::failure() but state != FAILED"</span>);</div>
+<div class="line"><a name="l01165"></a><span class="lineno"> 1165</span>  }</div>
<div class="line"><a name="l01166"></a><span class="lineno"> 1166</span> </div>
-<div class="line"><a name="l01167"></a><span class="lineno"> 1167</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
-<div class="line"><a name="l01168"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#ae649c56b07f44c05e4b7aa3620133ff9"> 1168</a></span> <span class="keyword">const</span> std::string& <a class="code" href="classprocess_1_1Future.html#ae649c56b07f44c05e4b7aa3620133ff9">Future<T>::failure</a>()<span class="keyword"> const</span></div>
-<div class="line"><a name="l01169"></a><span class="lineno"> 1169</span> <span class="keyword"></span>{</div>
-<div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>  <span class="keywordflow">if</span> (data->state != FAILED) {</div>
-<div class="line"><a name="l01171"></a><span class="lineno"> 1171</span>  <a class="code" href="abort_8hpp.html#a4d84a74fe6e4f84bc3d2f901b9e89f93">ABORT</a>(<span class="stringliteral">"Future::failure() but state != FAILED"</span>);</div>
-<div class="line"><a name="l01172"></a><span class="lineno"> 1172</span>  }</div>
-<div class="line"><a name="l01173"></a><span class="lineno"> 1173</span> </div>
-<div class="line"><a name="l01174"></a><span class="lineno"> 1174</span>  <a class="code" href="stout_2include_2stout_2check_8hpp.html#a7d338bde94559d47319226f4ccbc0bda">CHECK_ERROR</a>(data->result);</div>
-<div class="line"><a name="l01175"></a><span class="lineno"> 1175</span>  <span class="keywordflow">return</span> data->result.error();</div>
-<div class="line"><a name="l01176"></a><span class="lineno"> 1176</span> }</div>
-<div class="line"><a name="l01177"></a><span class="lineno"> 1177</span> </div>
-<div class="line"><a name="l01178"></a><span class="lineno"> 1178</span> </div>
-<div class="line"><a name="l01179"></a><span class="lineno"> 1179</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
-<div class="line"><a name="l01180"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a1b80bf321358be44880d9c6bae5d9a2d"> 1180</a></span> <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future<T></a>& <a class="code" href="classprocess_1_1Future.html#a1b80bf321358be44880d9c6bae5d9a2d">Future<T>::onDiscard</a>(<a class="code" href="classprocess_1_1Future.html#a7f793e67f309787ba34f3ed29652599c">DiscardCallback</a>&& callback)<span class="keyword"> const</span></div>
-<div class="line"><a name="l01181"></a><span class="lineno"> 1181</span> <span class="keyword"></span>{</div>
-<div class="line"><a name="l01182"></a><span class="lineno"> 1182</span>  <span class="keywordtype">bool</span> <a class="code" href="namespaceprocess.html#a72c24f06ac3f91b9412de80c6252df25">run</a> = <span class="keyword">false</span>;</div>
-<div class="line"><a name="l01183"></a><span class="lineno"> 1183</span> </div>
-<div class="line"><a name="l01184"></a><span class="lineno"> 1184</span>  <span class="keyword">synchronized</span> (data->lock) {</div>
-<div class="line"><a name="l01185"></a><span class="lineno"> 1185</span>  <span class="keywordflow">if</span> (data->discard) {</div>
-<div class="line"><a name="l01186"></a><span class="lineno"> 1186</span>  run = <span class="keyword">true</span>;</div>
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-<div class="line"><a name="l01188"></a><span class="lineno"> 1188</span>  data->onDiscardCallbacks.emplace_back(std::move(callback));</div>
-<div class="line"><a name="l01189"></a><span class="lineno"> 1189</span>  }</div>
-<div class="line"><a name="l01190"></a><span class="lineno"> 1190</span>  }</div>
-<div class="line"><a name="l01191"></a><span class="lineno"> 1191</span> </div>
-<div class="line"><a name="l01192"></a><span class="lineno"> 1192</span>  <span class="comment">// TODO(*): Invoke callback in another execution context.</span></div>
-<div class="line"><a name="l01193"></a><span class="lineno"> 1193</span>  <span class="keywordflow">if</span> (run) {</div>
-<div class="line"><a name="l01194"></a><span class="lineno"> 1194</span>  callback();</div>
-<div class="line"><a name="l01195"></a><span class="lineno"> 1195</span>  }</div>
-<div class="line"><a name="l01196"></a><span class="lineno"> 1196</span> </div>
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-<div class="line"><a name="l01198"></a><span class="lineno"> 1198</span> }</div>
-<div class="line"><a name="l01199"></a><span class="lineno"> 1199</span> </div>
-<div class="line"><a name="l01200"></a><span class="lineno"> 1200</span> </div>
-<div class="line"><a name="l01201"></a><span class="lineno"> 1201</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
-<div class="line"><a name="l01202"></a><span class="lineno"><a class="line" href="classprocess_1_1Future.html#a0af9d6f01e26acab3c2882a90fc09149"> 1202</a></span> <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">Future<T></a>& <a class="code" href="classprocess_1_1Future.html#a0af9d6f01e26acab3c2882a90fc09149">Future<T>::onReady</a>(<a class="code" href="classprocess_1_1Future.html#a542d3524ad6d4ca7ec633e63e4beadeb">ReadyCallback</a>&& callback)<span class="keyword"> const</span></div>
-<div class="line"><a name="l01203"></a><span class="lineno"> 1203</span> <span class="keyword"></span>{</div>
-<div class="line"><a name="l01204"></a><span class="lineno"> 1204</span>  <span class="keywordtype">bool</span> <a class="code" href="namespaceprocess.html#a72c24f06ac3f91b9412de80c6252df25">run</a> = <span class="keyword">false</span>;</div>
-<div class="line"><a name="l01205"></a><span class="lineno"> 1205</span> </div>
-<div class="line"><a name="l01206"></a><span class="lineno"> 1206</span>  <span class="keyword">synchronized</span> (data->lock) {</div>
-<div class="line"><a name="l01207"></a><span class="lineno"> 1207</span>  <span class="keywordflow">if</span> (data->state == READY) {</div>
-<div class="line"><a name="l01208"></a><span class="lineno"> 1208</span>  run = <span class="keyword">true</span>;</div>
-<div class="line"><a name="l01209"></a><span class="lineno"> 1209</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (data->state == PENDING) {</div>
-<div class="line"><a name="l01210"></a><span class="lineno"> 1210</span>  data->onReadyCallbacks.emplace_back(std::move(callback));</div>
-<div class="line"><a name="l01211"></a><span class="lineno"> 1211</span>  }</div>
-<div class="line"><a name="l01212"></a><span class="lineno"> 1212</span>  }</div>
-<div class="line"><a name="l01213"></a><span class="lineno"> 1213</span> </div>
-<div class="line"><a name="l01214"></a><span class="lineno"> 1214</span>  <span class="comment">// TODO(*): Invoke callback in another execution context.</span></div>
-<div class="line"><a name="l01215"></a><span class="lineno"> 1215</span>  <span class="keywordflow">if</span> (run) {</div>
-<div class="line"><a name="l01216"></a><span class="lineno"> 1216</span>  callback(data->result.get());</div>
-<div class="line"><a name="l01217"></a><span class="lineno"> 1217</span>  }</div>
-<div class="line"><a name="l01218"></a><span class="lineno">
<TRUNCATED>