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From git-site-r...@apache.org
Subject [02/14] mesos-site git commit: Updated the website built from mesos SHA: bd5e874.
Date Mon, 02 Oct 2017 21:57:48 GMT
http://git-wip-us.apache.org/repos/asf/mesos-site/blob/78eea43c/content/api/latest/c++/windows_2os_8hpp_source.html
----------------------------------------------------------------------
diff --git a/content/api/latest/c++/windows_2os_8hpp_source.html b/content/api/latest/c++/windows_2os_8hpp_source.html
index 21b1437..21feff5 100644
--- a/content/api/latest/c++/windows_2os_8hpp_source.html
+++ b/content/api/latest/c++/windows_2os_8hpp_source.html
@@ -67,833 +67,836 @@
 <div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#ifndef __STOUT_WINDOWS_OS_HPP__</span></div>
 <div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define __STOUT_WINDOWS_OS_HPP__</span></div>
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-<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#include &lt;io.h&gt;</span></div>
-<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#include &lt;Psapi.h&gt;</span></div>
-<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#include &lt;TlHelp32.h&gt;</span></div>
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-<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#include &lt;sys/utime.h&gt;</span></div>
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+<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;list&gt;</span></div>
+<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#include &lt;map&gt;</span></div>
+<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#include &lt;memory&gt;</span></div>
+<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor">#include &lt;set&gt;</span></div>
+<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#include &lt;string&gt;</span></div>
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-<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &lt;map&gt;</span></div>
-<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#include &lt;memory&gt;</span></div>
-<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#include &lt;set&gt;</span></div>
-<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#include &lt;string&gt;</span></div>
-<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div>
-<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="duration_8hpp.html">stout/duration.hpp</a>&gt;</span></div>
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-<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="stringify_8hpp.html">stout/stringify.hpp</a>&gt;</span></div>
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-<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="try_8hpp.html">stout/try.hpp</a>&gt;</span></div>
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-<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="keyword">namespace </span>os {</div>
-<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="keyword">namespace </span>internal {</div>
+<div class="line"><a name="l00024"></a><span class="lineno">   24</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="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="none_8hpp.html">stout/none.hpp</a>&gt;</span></div>
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+<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="path_8hpp.html">stout/path.hpp</a>&gt;</span></div>
+<div class="line"><a name="l00029"></a><span class="lineno">   29</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="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="strings_8hpp.html">stout/strings.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="try_8hpp.html">stout/try.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_2stout_2include_2stout_2version_8hpp.html">stout/version.hpp</a>&gt;</span></div>
+<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html">stout/windows.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="os_2os_8hpp.html">stout/os/os.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="getenv_8hpp.html">stout/os/getenv.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="stout_2include_2stout_2os_2process_8hpp.html">stout/os/process.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="3rdparty_2stout_2include_2stout_2os_2read_8hpp.html">stout/os/read.hpp</a>&gt;</span></div>
+<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;</div>
+<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="3rdparty_2stout_2include_2stout_2os_2raw_2environment_8hpp.html">stout/os/raw/environment.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="fd_8hpp.html">stout/os/windows/fd.hpp</a>&gt;</span></div>
+<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;</div>
+<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="comment">// NOTE: These system headers must be included after `stout/windows.hpp`</span></div>
+<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="comment">// as they may include `Windows.h`. See comments in `stout/windows.hpp`</span></div>
+<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="comment">// for why this ordering is important.</span></div>
+<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="preprocessor">#include &lt;direct.h&gt;</span></div>
+<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="preprocessor">#include &lt;io.h&gt;</span></div>
+<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="preprocessor">#include &lt;Psapi.h&gt;</span></div>
+<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="preprocessor">#include &lt;TlHelp32.h&gt;</span></div>
+<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="preprocessor">#include &lt;Userenv.h&gt;</span></div>
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-<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;  <span class="keywordflow">if</span> (!::GetVersionExW(reinterpret_cast&lt;LPOSVERSIONINFO&gt;(&amp;os_version))) {</div>
-<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="classWindowsError.html">WindowsError</a>(</div>
-<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;        <span class="stringliteral">&quot;os::internal::os_version: Call to `GetVersionEx` failed&quot;</span>);</div>
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-<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;}</div>
+<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="keyword">namespace </span>os {</div>
+<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="keyword">namespace </span>internal {</div>
+<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;</div>
+<div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="namespaceos_1_1internal.html#a9fa879fd2d953386a2472e612cf99d0e">   55</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="classTry.html">Try&lt;OSVERSIONINFOEXW&gt;</a> <a class="code" href="namespaceos_1_1internal.html#a9fa879fd2d953386a2472e612cf99d0e">os_version</a>()</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;  OSVERSIONINFOEXW <a class="code" href="namespaceos_1_1internal.html#a9fa879fd2d953386a2472e612cf99d0e">os_version</a>;</div>
+<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;  os_version.dwOSVersionInfoSize = <span class="keyword">sizeof</span>(<a class="code" href="namespaceos_1_1internal.html#a9fa879fd2d953386a2472e612cf99d0e">os_version</a>);</div>
+<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;  <span class="keywordflow">if</span> (!::GetVersionExW(reinterpret_cast&lt;LPOSVERSIONINFO&gt;(&amp;os_version))) {</div>
+<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="classWindowsError.html">WindowsError</a>(</div>
+<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;        <span class="stringliteral">&quot;os::internal::os_version: Call to `GetVersionEx` failed&quot;</span>);</div>
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-<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;{</div>
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-<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;  <span class="comment">// when the system reads them from the registry.&quot; This is akin to the</span></div>
-<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;  <span class="comment">// Linux `gethostname` which calls `uname`, thus avoiding a DNS lookup.</span></div>
-<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;  <span class="comment">// The `net::getHostname` function can be used for an explicit DNS lookup.</span></div>
-<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;  <span class="comment">//</span></div>
-<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;  <span class="comment">// NOTE: This returns the hostname of the local computer, or the local</span></div>
-<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;  <span class="comment">// node if this computer is part of a cluster.</span></div>
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-<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;  <span class="keywordflow">if</span> (::GetComputerNameExW(format, <span class="keyword">nullptr</span>, &amp;size) == 0) {</div>
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-<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;  std::vector&lt;wchar_t&gt; buffer;</div>
-<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;  buffer.reserve(size);</div>
+<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;  <span class="keywordflow">return</span> <a class="code" href="namespaceos_1_1internal.html#a9fa879fd2d953386a2472e612cf99d0e">os_version</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;</div>
+<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;</div>
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+<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;{</div>
+<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;  <span class="comment">// MSDN documentation states &quot;The names are established at system startup,</span></div>
+<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;  <span class="comment">// when the system reads them from the registry.&quot; This is akin to the</span></div>
+<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;  <span class="comment">// Linux `gethostname` which calls `uname`, thus avoiding a DNS lookup.</span></div>
+<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;  <span class="comment">// The `net::getHostname` function can be used for an explicit DNS lookup.</span></div>
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-<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;    <span class="keywordflow">case</span> PROCESSOR_ARCHITECTURE_INTEL:</div>
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-<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;{</div>
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-<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;  <span class="keywordtype">size_t</span> size_in_bytes;</div>
-<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;</div>
-<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;  <span class="comment">// Attempt to populate `processes` with PIDs. We repeatedly call</span></div>
-<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;  <span class="comment">// `EnumProcesses` with increasingly large arrays until it &quot;succeeds&quot; at</span></div>
-<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;  <span class="comment">// populating the array with PIDs. The criteria for determining when</span></div>
-<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;  <span class="comment">// `EnumProcesses` has succeeded are:</span></div>
-<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;  <span class="comment">//   (1) the return value is nonzero.</span></div>
-<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;  <span class="comment">//   (2) the `bytes_returned` is less than the number of bytes in the array.</span></div>
-<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;  <span class="keywordflow">do</span> {</div>
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-<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;    processes.resize(max_items);</div>
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-<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;    CHECK_LE(size_in_bytes, MAXDWORD);</div>
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-<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;        processes.data(),</div>
-<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;        <span class="keyword">static_cast&lt;</span>DWORD<span class="keyword">&gt;</span>(size_in_bytes),</div>
-<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;        &amp;bytes_returned);</div>
-<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;</div>
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-<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;      <span class="keywordflow">return</span> <a class="code" href="classWindowsError.html">WindowsError</a>(<span class="stringliteral">&quot;os::pids: Call to `EnumProcesses` failed&quot;</span>);</div>
-<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;    }</div>
-<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;</div>
-<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;    max_items *= 2;</div>
-<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;  } <span class="keywordflow">while</span> (bytes_returned &gt;= size_in_bytes);</div>
+<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;} <span class="comment">// namespace internal {</span></div>
+<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;</div>
+<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;</div>
+<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;<span class="comment">// Overload of os::pids for filtering by groups and sessions. A group / session</span></div>
+<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;<span class="comment">// id of 0 will fitler on the group / session ID of the calling process.</span></div>
+<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;<span class="comment">// NOTE: Windows does not have the concept of a process group, so we need to</span></div>
+<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;<span class="comment">// enumerate all processes.</span></div>
+<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;<span class="keyword">inline</span> <a class="code" href="classTry.html">Try&lt;std::set&lt;pid_t&gt;</a>&gt; <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>(<a class="code" href="classOption.html">Option&lt;pid_t&gt;</a> <a class="code" href="structgroup.html">group</a>, <a class="code" href="classOption.html">Option&lt;pid_t&gt;</a> session)</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;  DWORD max_items = 4096;</div>
+<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;  DWORD bytes_returned;</div>
+<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;  std::vector&lt;pid_t&gt; <a class="code" href="namespaceos.html#aa98ca8ac255e2b9c689979a1b40084d3">processes</a>;</div>
+<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;  <span class="keywordtype">size_t</span> size_in_bytes;</div>
+<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;</div>
+<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;  <span class="comment">// Attempt to populate `processes` with PIDs. We repeatedly call</span></div>
+<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;  <span class="comment">// `EnumProcesses` with increasingly large arrays until it &quot;succeeds&quot; at</span></div>
+<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;  <span class="comment">// populating the array with PIDs. The criteria for determining when</span></div>
+<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;  <span class="comment">// `EnumProcesses` has succeeded are:</span></div>
+<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;  <span class="comment">//   (1) the return value is nonzero.</span></div>
+<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;  <span class="comment">//   (2) the `bytes_returned` is less than the number of bytes in the array.</span></div>
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+<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;    <span class="comment">// TODO(alexnaparu): Set a limit to the memory that can be used.</span></div>
+<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;    processes.resize(max_items);</div>
+<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;    size_in_bytes = processes.size() * <span class="keyword">sizeof</span>(<a class="code" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html#ab03ced250ed239bc3b50b669493997f9">pid_t</a>);</div>
+<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;    CHECK_LE(size_in_bytes, MAXDWORD);</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;    BOOL result = ::EnumProcesses(</div>
+<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;        processes.data(),</div>
+<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;        <span class="keyword">static_cast&lt;</span>DWORD<span class="keyword">&gt;</span>(size_in_bytes),</div>
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+<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;</div>
+<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;    <span class="keywordflow">if</span> (!result) {</div>
+<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;      <span class="keywordflow">return</span> <a class="code" href="classWindowsError.html">WindowsError</a>(<span class="stringliteral">&quot;os::pids: Call to `EnumProcesses` failed&quot;</span>);</div>
+<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;    }</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;  std::set&lt;pid_t&gt; pids_set(processes.begin(), processes.end());</div>
-<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;</div>
-<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;  <span class="comment">// NOTE: The PID `0` will always be returned by `EnumProcesses`; however, it</span></div>
-<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;  <span class="comment">// is the PID of Windows&#39; System Idle Process. While the PID is valid, using</span></div>
-<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;  <span class="comment">// it for anything is almost always invalid. For instance, `OpenProcess` will</span></div>
-<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;  <span class="comment">// fail with an invalid parameter error if the user tries to get a handle for</span></div>
-<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;  <span class="comment">// PID `0`. In the interest of safety, we prevent the `pids` API from ever</span></div>
-<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;  <span class="comment">// including the PID `0`.</span></div>
-<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;  pids_set.erase(0);</div>
-<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;  <span class="keywordflow">return</span> pids_set;</div>
-<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;}</div>
-<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;</div>
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-<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;{</div>
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-<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;</div>
-<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;</div>
-<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;<span class="comment">// Sets the value associated with the specified key in the set of</span></div>
-<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;<span class="comment">// environment variables.</span></div>
-<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceos.html#ac0f608e2a32764327e38c53d0d51527d">setenv</a>(</div>
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-<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;    <span class="keyword">const</span> std::string&amp; value,</div>
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-<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;  <span class="comment">//</span></div>
-<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;  <span class="comment">// Per MSDN[1], `GetEnvironmentVariable` returns 0 on error and sets the</span></div>
-<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;  <span class="comment">// error code to `ERROR_ENVVAR_NOT_FOUND` if the variable was not found.</span></div>
+<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;    max_items *= 2;</div>
+<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;  } <span class="keywordflow">while</span> (bytes_returned &gt;= size_in_bytes);</div>
+<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;</div>
+<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;  std::set&lt;pid_t&gt; pids_set(processes.begin(), processes.end());</div>
+<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;</div>
+<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;  <span class="comment">// NOTE: The PID `0` will always be returned by `EnumProcesses`; however, it</span></div>
+<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;  <span class="comment">// is the PID of Windows&#39; System Idle Process. While the PID is valid, using</span></div>
+<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;  <span class="comment">// it for anything is almost always invalid. For instance, `OpenProcess` will</span></div>
+<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;  <span class="comment">// fail with an invalid parameter error if the user tries to get a handle for</span></div>
+<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;  <span class="comment">// PID `0`. In the interest of safety, we prevent the `pids` API from ever</span></div>
+<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;  <span class="comment">// including the PID `0`.</span></div>
+<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;  pids_set.erase(0);</div>
+<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;  <span class="keywordflow">return</span> pids_set;</div>
+<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;}</div>
+<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;</div>
+<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;</div>
+<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;<span class="keyword">inline</span> <a class="code" href="classTry.html">Try&lt;std::set&lt;pid_t&gt;</a>&gt; <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>()</div>
+<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;{</div>
+<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;  <span class="keywordflow">return</span> <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>(<a class="code" href="structNone.html">None</a>(), <a class="code" href="structNone.html">None</a>());</div>
+<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;}</div>
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+<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;<span class="comment">// environment variables.</span></div>
+<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceos.html#ac0f608e2a32764327e38c53d0d51527d">setenv</a>(</div>
+<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;    <span class="keyword">const</span> std::string&amp; key,</div>
+<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;    <span class="keyword">const</span> std::string&amp; value,</div>
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+<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;{</div>
+<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;  <span class="comment">// Do not set the variable if already set and `overwrite` was not specified.</span></div>
 <div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;  <span class="comment">//</span></div>
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-<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;  <span class="keywordflow">if</span> (!overwrite &amp;&amp;</div>
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-<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;  <span class="comment">// `SetEnvironmentVariable` returns an error code, but we can&#39;t act on it.</span></div>
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-<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;<span class="comment">// environment variables.</span></div>
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-<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;{</div>
-<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;  <span class="comment">// Per MSDN documentation[1], passing `nullptr` as the value will cause</span></div>
-<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;  <span class="comment">// `SetEnvironmentVariable` to delete the key from the process&#39;s environment.</span></div>
-<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;  ::SetEnvironmentVariableW(wide_stringify(key).data(), <span class="keyword">nullptr</span>);</div>
-<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;}</div>
-<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;</div>
-<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;</div>
-<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;<span class="comment">// Suspends execution of the calling process until a child specified by `pid`</span></div>
-<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;<span class="comment">// has changed state. Unlike the POSIX standard function `::waitpid`, this</span></div>
-<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;<span class="comment">// function does not use -1 and 0 to signify errors and nonblocking return.</span></div>
-<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;<span class="comment">// Instead, we return `Result&lt;pid_t&gt;`:</span></div>
-<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;<span class="comment">//   * In case of error, we return `Error` rather than -1. For example, we</span></div>
-<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;<span class="comment">//     would return an `Error` in case of `EINVAL`.</span></div>
-<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;<span class="comment">//   * In case of nonblocking return, we return `None` rather than 0. For</span></div>
-<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;<span class="comment">//     example, if we pass `WNOHANG` in the `options`, we would expect 0 to be</span></div>
-<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;<span class="comment">//     returned in the case that children specified by `pid` exist, but have</span></div>
-<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;<span class="comment">//     not changed state yet. In this case we return `None` instead.</span></div>
-<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;<span class="comment">//</span></div>
-<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;<span class="comment">// NOTE: There are important differences between the POSIX and Windows</span></div>
-<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;<span class="comment">// implementations of this function:</span></div>
-<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;<span class="comment">//   * On POSIX, `pid_t` is a signed number, but on Windows, PIDs are `DWORD`,</span></div>
-<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;<span class="comment">//     which is `unsigned long`. Thus, if we use `DWORD` to represent the `pid`</span></div>
-<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;<span class="comment">//     argument, passing -1 as the `pid` would (on most modern servers)</span></div>
-<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;<span class="comment">//     silently convert to a really large `pid`. This is undesirable.</span></div>
-<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;<span class="comment">//   * Since it is important to be able to detect -1 has been passed to</span></div>
-<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;<span class="comment">//     `os::waitpid`, as a matter of practicality, we choose to:</span></div>
-<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;<span class="comment">//     (1) Use `long` to represent the `pid` argument.</span></div>
-<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;<span class="comment">//     (2) Disable using any value &lt;= 0 for `pid` on Windows.</span></div>
-<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;<span class="comment">//   * This decision is pragmatic. The reasoning is:</span></div>
-<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;<span class="comment">//     (1) The Windows code paths call `os::waitpid` in only a handful of</span></div>
-<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;<span class="comment">//         places, and in none of these conditions do we need `-1` as a value.</span></div>
-<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;<span class="comment">//     (2) Since PIDs virtually never take on values outside the range of</span></div>
-<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;<span class="comment">//         vanilla signed `long` it is likely that an accidental conversion</span></div>
-<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;<span class="comment">//         will never happen.</span></div>
-<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;<span class="comment">//     (3) Even though it is not formalized in the C specification, the</span></div>
-<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;<span class="comment">//         implementation of `long` on the vast majority of production servers</span></div>
-<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;<span class="comment">//         is 2&#39;s complement, so we expect that when we accidentally do</span></div>
-<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;<span class="comment">//         implicitly convert from `unsigned long` to `long`, we will &quot;wrap</span></div>
-<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;<span class="comment">//         around&quot; to negative values. And since we&#39;ve disabled the negative</span></div>
-<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;<span class="comment">//         `pid` in the Windows implementation, we should error out.</span></div>
-<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;<span class="comment">//   * Finally, on Windows, we currently do not check that the process we are</span></div>
-<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;<span class="comment">//     attempting to await is a child process.</span></div>
-<div class="line"><a name="l00271"></a><span class="lineno"><a class="line" href="namespaceos.html#a59caf358baf81de389c29d983b8e21ad">  271</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="classResult.html">Result&lt;pid_t&gt;</a> <a class="code" href="namespaceos.html#a48c86262928f59c5c54d0cb0012e2aba">waitpid</a>(<span class="keywordtype">long</span> pid, <span class="keywordtype">int</span>* <a class="code" href="namespaceproc.html#a34396c6140a28f583dc13fee3c3c35d4">status</a>, <span class="keywordtype">int</span> options)</div>
-<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;{</div>
-<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;  <span class="keyword">const</span> <span class="keywordtype">bool</span> wait_for_child = (options &amp; <a class="code" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html#afa288d86b242c3005425a9c0f1682544">WNOHANG</a>) == 0;</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;  <span class="comment">// NOTE: Windows does not implement pids &lt;= 0.</span></div>
-<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;  <span class="keywordflow">if</span> (pid &lt;= 0) {</div>
-<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;    errno = ENOSYS;</div>
-<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="classErrnoError.html">ErrnoError</a>(</div>
-<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;        <span class="stringliteral">&quot;os::waitpid: Value of pid is &#39;&quot;</span> + <a class="code" href="namespacens.html#a28116b46e6543597a11733424cd1aa20">stringify</a>(pid) +</div>
-<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;        <span class="stringliteral">&quot;&#39;; the Windows implementation currently does not allow values &lt;= 0&quot;</span>);</div>
-<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (options != 0 &amp;&amp; options != <a class="code" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html#afa288d86b242c3005425a9c0f1682544">WNOHANG</a>) {</div>
-<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;    <span class="comment">// NOTE: We only support `options == 0` or `options == WNOHANG`. On Windows</span></div>
-<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;    <span class="comment">// no flags other than `WNOHANG` are supported.</span></div>
-<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;    errno = ENOSYS;</div>
-<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="classErrnoError.html">ErrnoError</a>(</div>
-<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;        <span class="stringliteral">&quot;os::waitpid: Only flag `WNOHANG` is implemented on Windows&quot;</span>);</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;</div>
-<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;  <span class="comment">// TODO(hausdorff): Check that `pid` is one of the child processes. If not,</span></div>
-<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;  <span class="comment">// set `errno` to `ECHILD` and return -1.</span></div>
+<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;  <span class="comment">// Per MSDN[1], `GetEnvironmentVariable` returns 0 on error and sets the</span></div>
+<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;  <span class="comment">// error code to `ERROR_ENVVAR_NOT_FOUND` if the variable was not found.</span></div>
+<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;  <span class="comment">//</span></div>
+<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;  <span class="comment">// [1] https://msdn.microsoft.com/en-us/library/windows/desktop/ms683188(v=vs.85).aspx</span></div>
+<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;  <span class="keywordflow">if</span> (!overwrite &amp;&amp;</div>
+<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;      ::GetEnvironmentVariableW(wide_stringify(key).data(), <span class="keyword">nullptr</span>, 0) != 0 &amp;&amp;</div>
+<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;      ::GetLastError() == ERROR_ENVVAR_NOT_FOUND) {</div>
+<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;    <span class="keywordflow">return</span>;</div>
+<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;  }</div>
+<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;</div>
+<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;  <span class="comment">// `SetEnvironmentVariable` returns an error code, but we can&#39;t act on it.</span></div>
+<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;  ::SetEnvironmentVariableW(</div>
+<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;      wide_stringify(key).data(), wide_stringify(value).data());</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;</div>
+<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;</div>
+<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;<span class="comment">// Unsets the value associated with the specified key in the set of</span></div>
+<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;<span class="comment">// environment variables.</span></div>
+<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceos.html#a7471e14f4cbd7e23b5daa21e556f4eb5">unsetenv</a>(<span class="keyword">const</span> std::string&amp; key)</div>
+<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;{</div>
+<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;  <span class="comment">// Per MSDN documentation[1], passing `nullptr` as the value will cause</span></div>
+<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;  <span class="comment">// `SetEnvironmentVariable` to delete the key from the process&#39;s environment.</span></div>
+<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;  ::SetEnvironmentVariableW(wide_stringify(key).data(), <span class="keyword">nullptr</span>);</div>
+<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;}</div>
+<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;</div>
+<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;</div>
+<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;<span class="comment">// Suspends execution of the calling process until a child specified by `pid`</span></div>
+<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;<span class="comment">// has changed state. Unlike the POSIX standard function `::waitpid`, this</span></div>
+<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;<span class="comment">// function does not use -1 and 0 to signify errors and nonblocking return.</span></div>
+<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;<span class="comment">// Instead, we return `Result&lt;pid_t&gt;`:</span></div>
+<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;<span class="comment">//   * In case of error, we return `Error` rather than -1. For example, we</span></div>
+<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;<span class="comment">//     would return an `Error` in case of `EINVAL`.</span></div>
+<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;<span class="comment">//   * In case of nonblocking return, we return `None` rather than 0. For</span></div>
+<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;<span class="comment">//     example, if we pass `WNOHANG` in the `options`, we would expect 0 to be</span></div>
+<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;<span class="comment">//     returned in the case that children specified by `pid` exist, but have</span></div>
+<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;<span class="comment">//     not changed state yet. In this case we return `None` instead.</span></div>
+<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;<span class="comment">//</span></div>
+<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;<span class="comment">// NOTE: There are important differences between the POSIX and Windows</span></div>
+<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;<span class="comment">// implementations of this function:</span></div>
+<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;<span class="comment">//   * On POSIX, `pid_t` is a signed number, but on Windows, PIDs are `DWORD`,</span></div>
+<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;<span class="comment">//     which is `unsigned long`. Thus, if we use `DWORD` to represent the `pid`</span></div>
+<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;<span class="comment">//     argument, passing -1 as the `pid` would (on most modern servers)</span></div>
+<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;<span class="comment">//     silently convert to a really large `pid`. This is undesirable.</span></div>
+<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;<span class="comment">//   * Since it is important to be able to detect -1 has been passed to</span></div>
+<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;<span class="comment">//     `os::waitpid`, as a matter of practicality, we choose to:</span></div>
+<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;<span class="comment">//     (1) Use `long` to represent the `pid` argument.</span></div>
+<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;<span class="comment">//     (2) Disable using any value &lt;= 0 for `pid` on Windows.</span></div>
+<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;<span class="comment">//   * This decision is pragmatic. The reasoning is:</span></div>
+<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;<span class="comment">//     (1) The Windows code paths call `os::waitpid` in only a handful of</span></div>
+<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;<span class="comment">//         places, and in none of these conditions do we need `-1` as a value.</span></div>
+<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;<span class="comment">//     (2) Since PIDs virtually never take on values outside the range of</span></div>
+<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;<span class="comment">//         vanilla signed `long` it is likely that an accidental conversion</span></div>
+<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;<span class="comment">//         will never happen.</span></div>
+<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;<span class="comment">//     (3) Even though it is not formalized in the C specification, the</span></div>
+<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;<span class="comment">//         implementation of `long` on the vast majority of production servers</span></div>
+<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;<span class="comment">//         is 2&#39;s complement, so we expect that when we accidentally do</span></div>
+<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;<span class="comment">//         implicitly convert from `unsigned long` to `long`, we will &quot;wrap</span></div>
+<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;<span class="comment">//         around&quot; to negative values. And since we&#39;ve disabled the negative</span></div>
+<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;<span class="comment">//         `pid` in the Windows implementation, we should error out.</span></div>
+<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;<span class="comment">//   * Finally, on Windows, we currently do not check that the process we are</span></div>
+<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;<span class="comment">//     attempting to await is a child process.</span></div>
+<div class="line"><a name="l00274"></a><span class="lineno"><a class="line" href="namespaceos.html#a59caf358baf81de389c29d983b8e21ad">  274</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="classResult.html">Result&lt;pid_t&gt;</a> <a class="code" href="namespaceos.html#a48c86262928f59c5c54d0cb0012e2aba">waitpid</a>(<span class="keywordtype">long</span> pid, <span class="keywordtype">int</span>* <a class="code" href="namespaceproc.html#a34396c6140a28f583dc13fee3c3c35d4">status</a>, <span class="keywordtype">int</span> options)</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;  <span class="keyword">const</span> <span class="keywordtype">bool</span> wait_for_child = (options &amp; <a class="code" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html#afa288d86b242c3005425a9c0f1682544">WNOHANG</a>) == 0;</div>
+<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;</div>
+<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;  <span class="comment">// NOTE: Windows does not implement pids &lt;= 0.</span></div>
+<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;  <span class="keywordflow">if</span> (pid &lt;= 0) {</div>
+<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;    errno = ENOSYS;</div>
+<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="classErrnoError.html">ErrnoError</a>(</div>
+<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;        <span class="stringliteral">&quot;os::waitpid: Value of pid is &#39;&quot;</span> + <a class="code" href="namespacens.html#a28116b46e6543597a11733424cd1aa20">stringify</a>(pid) +</div>
+<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;        <span class="stringliteral">&quot;&#39;; the Windows implementation currently does not allow values &lt;= 0&quot;</span>);</div>
+<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (options != 0 &amp;&amp; options != <a class="code" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html#afa288d86b242c3005425a9c0f1682544">WNOHANG</a>) {</div>
+<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;    <span class="comment">// NOTE: We only support `options == 0` or `options == WNOHANG`. On Windows</span></div>
+<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;    <span class="comment">// no flags other than `WNOHANG` are supported.</span></div>
+<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;    errno = ENOSYS;</div>
+<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="classErrnoError.html">ErrnoError</a>(</div>
+<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;        <span class="stringliteral">&quot;os::waitpid: Only flag `WNOHANG` is implemented on Windows&quot;</span>);</div>
+<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;  }</div>
 <div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;</div>
-<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;  <span class="comment">// Open the child process as a safe `SharedHandle`.</span></div>
-<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;  <span class="keyword">const</span> <a class="code" href="namespacerouting_1_1queueing_1_1ingress.html#a934208b6017d0a9aed90b6594bb8292f">HANDLE</a> <a class="code" href="namespaceos.html#ae19e4161a51b86a1f330f3bf1dc75389">process</a> = ::OpenProcess(</div>
-<div class

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