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Posted to commits@mesos.apache.org by gi...@apache.org on 2018/06/28 18:45:30 UTC
[37/50] mesos-site git commit: Updated the website built from mesos
SHA: 7c9c72d.
http://git-wip-us.apache.org/repos/asf/mesos-site/blob/09fd0301/content/api/latest/c++/fd_8hpp_source.html
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<div class="title">fd.hpp</div> </div>
</div><!--header-->
<div class="contents">
-<a href="fd_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// you may not use this file except in compliance with the License.</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// You may obtain a copy of the License at</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">//</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">//</span></di
v><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// See the License for the specific language governing permissions and</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// limitations under the License.</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div><div class="line"><a
name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#ifndef __STOUT_OS_WINDOWS_FD_HPP__</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#define __STOUT_OS_WINDOWS_FD_HPP__</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <fcntl.h></span> <span class="comment">// For `O_RDWR`.</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <io.h></span> <span class="comment">// For `_open_osfhandle`.</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include <array></span></div><div class="line"><a
name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <memory></span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <ostream></span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <type_traits></span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> </div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <<a class="code" href="stout_2include_2stout_2check_8hpp.html">stout/check.hpp</a>></span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <<a class="code" href="nothing_8hpp.html">stout/nothing.hpp</a>></span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="p
reprocessor">#include <<a class="code" href="try_8hpp.html">stout/try.hpp</a>></span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <<a class="code" href="unreachable_8hpp.html">stout/unreachable.hpp</a>></span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <<a class="code" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html">stout/windows.hpp</a>></span> <span class="comment">// For `WinSock2.h`.</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">namespace </span><a class="code" href="namespaceos.html">os</a> {</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>
0;<span class="comment">// The `WindowsFD` class exists to provide an common interface with the POSIX</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment">// file descriptor. While the bare `int` representation of the POSIX file</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">// descriptor API is undesirable, we rendezvous there in order to maintain the</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment">// existing code in Mesos.</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">//</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">// In the platform-agnostic code paths, the `int_fd` type is aliased to</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</s
pan> <span class="comment">// `WindowsFD`. The `os::*` functions return a type appropriate to the platform,</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment">// which allows us to write code like this:</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">//</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment">// Try<int_fd> fd = os::open(...);</span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment">//</span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment">// The `WindowsFD` constructs off one of:</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment">// (1) `HANDLE` - from the Win32 API</span></div><div class="line"><a name=
"l00045"></a><span class="lineno"> 45</span> <span class="comment">// (2) `SOCKET` - from the WinSock API</span></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment">//</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment">// The `os::*` functions then take an instance of `WindowsFD`, examines</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment">// the state and dispatches to the appropriate API.</span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div><div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="classos_1_1WindowsFD.html"> 50</a></span> <span class="keyword">class </span><a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a></div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> {</div><div
class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5"> 53</a></span>  <span class="keyword">enum class</span> <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5">Type</a></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  {</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5ad09c4cb1265f1772bb757a7af277b49f">HANDLE</a>,</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5a75fbea08c09e684e6b3f3961761354fa">SOCKET</a></div><div class="line"><a name="l00057"></a><span class="lineno">
57</span>  };</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="comment">// The `HANDLE` here is expected to be file handles. Specifically,</span></div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="comment">// `HANDLE`s returned by file API such as `CreateFile`. There are</span></div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="comment">// APIs that return `HANDLE`s with different error values, and</span></div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="comment">// therefore must be handled accordingly. For example, a thread API</span></div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="comment">// such as `CreateThread` returns `NULL` as the error value, rat
her</span></div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="comment">// than `INVALID_HANDLE_VALUE`.</span></div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="comment">//</span></div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="comment">// TODO(mpark): Consider adding a second parameter which tells us</span></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="comment">// what the error values are.</span></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  static_assert(</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  std::is_same<HANDLE, void*>::value,</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="stringliteral">"Expected `HANDLE` to be of type
`void*`."</span>);</div><div class="line"><a name="l00071"></a><span class="lineno"><a class="line" href="classos_1_1WindowsFD.html#a421497a56ee02f01dd4f0773d07eaa76"> 71</a></span>  <span class="keyword">explicit</span> <a class="code" href="classos_1_1WindowsFD.html#a421497a56ee02f01dd4f0773d07eaa76">WindowsFD</a>(<a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5ad09c4cb1265f1772bb757a7af277b49f">HANDLE</a> handle, <span class="keywordtype">bool</span> overlapped = <span class="keyword">false</span>)</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  : type_(<a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5">Type</a>::<a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5ad09c4cb1265f1772bb757a7af277b49f">HANDLE</a>), <a class="code" href="classos_1_1WindowsFD.html#afcf316b6f5178ce1b9002c4202aebcf6">handle_</a>(handle), overlapped_(overlapped)
</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  {}</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="comment">// The `SOCKET` here is expected to be Windows sockets, such as that</span></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="comment">// used by the Windows Sockets 2 library. The only expected error</span></div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="comment">// value is `INVALID_SOCKET`.</span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="comment">//</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="comment">// Note that sockets should almost always be overlapped. We do provide</span></div><div class
="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="comment">// a way in stout to create non-overlapped sockets, so for completeness, we</span></div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">// have an overlapped parameter in the constructor.</span></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  static_assert(</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  std::is_same<SOCKET, unsigned __int64>::value,</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="stringliteral">"Expected `SOCKET` to be of type `unsigned __int64`."</span>);</div><div class="line"><a name="l00085"></a><span class="lineno"><a class="line" href="classos_1_1WindowsFD.html#a33cd936b5641a029b1ea2da80d71c748"> 85</a></span>  <span class="keyword">explicit</span> <a class="code
" href="classos_1_1WindowsFD.html#a33cd936b5641a029b1ea2da80d71c748">WindowsFD</a>(SOCKET <a class="code" href="namespacerouting.html#aee51d4e36a57bab7d6ada56e15467370">socket</a>, <span class="keywordtype">bool</span> overlapped = <span class="keyword">true</span>)</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  : type_(<a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5">Type</a>::SOCKET), <a class="code" href="classos_1_1WindowsFD.html#a05016bee9531c79ce4576c9b8d9c9922">socket_</a>(socket), overlapped_(overlapped)</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  {}</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="comment">// On Windows, libevent's `evutil_socket_t` is set to `intptr_t`.</span></div><div class="line"><a name="l00090"></a><span
class="lineno"><a class="line" href="classos_1_1WindowsFD.html#a43994eeb484a426990af657f691f66e0"> 90</a></span>  <span class="keyword">explicit</span> <a class="code" href="classos_1_1WindowsFD.html#a43994eeb484a426990af657f691f66e0">WindowsFD</a>(intptr_t <a class="code" href="namespacerouting.html#aee51d4e36a57bab7d6ada56e15467370">socket</a>) : <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>(static_cast<SOCKET>(socket))</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  {}</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// This constructor is provided in so that the canonical integer</span></div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="comment">// file descriptors representing `stdin` (0), `stdout` (1), and</span></div><div
class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="comment">// `stderr` (2), and the invalid value of -1 can be used.</span></div><div class="line"><a name="l00096"></a><span class="lineno"><a class="line" href="classos_1_1WindowsFD.html#a278285643f263655c5f64f45451fc6e6"> 96</a></span>  <a class="code" href="classos_1_1WindowsFD.html#a278285643f263655c5f64f45451fc6e6">WindowsFD</a>(<span class="keywordtype">int</span> <a class="code" href="classos_1_1WindowsFD.html#a94b69cae4edb8f3549845fbfa0355b7c">crt</a>) : <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>(INVALID_HANDLE_VALUE)</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  {</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordflow">if</span> (crt == -1) {</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="comment">// No-op, alrea
dy `INVALID_HANDLE_VALUE`.</span></div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (crt == 0) {</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <a class="code" href="classos_1_1WindowsFD.html#afcf316b6f5178ce1b9002c4202aebcf6">handle_</a> = ::GetStdHandle(STD_INPUT_HANDLE);</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (crt == 1) {</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <a class="code" href="classos_1_1WindowsFD.html#afcf316b6f5178ce1b9002c4202aebcf6">handle_</a> = ::GetStdHandle(STD_OUTPUT_HANDLE);</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (crt ==
2) {</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <a class="code" href="classos_1_1WindowsFD.html#afcf316b6f5178ce1b9002c4202aebcf6">handle_</a> = ::GetStdHandle(STD_ERROR_HANDLE);</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="comment">// This would be better enforced at compile-time, but not</span></div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="comment">// currently possible, so this is a sanity check.</span></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  LOG(FATAL) << <span class="stringliteral">"Unexpected construction of `WindowsFD`"</span>;</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  }</div><div cla
ss="line"><a name="l00111"></a><span class="lineno"> 111</span>  }</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="comment">// Default construct with invalid handle semantics.</span></div><div class="line"><a name="l00114"></a><span class="lineno"><a class="line" href="classos_1_1WindowsFD.html#a68733e16ee25fe8602557e6e9f534bc9"> 114</a></span>  <a class="code" href="classos_1_1WindowsFD.html#a68733e16ee25fe8602557e6e9f534bc9">WindowsFD</a>() : <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>(INVALID_HANDLE_VALUE) {}</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <a class="code" href="classos_1_1WindowsFD.html#a68733e16ee25fe8602557e6e9f534bc9">WindowsFD</a>(<span class="keyword">const</span> <a class="c
ode" href="classos_1_1WindowsFD.html">WindowsFD</a>&) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <a class="code" href="classos_1_1WindowsFD.html#a68733e16ee25fe8602557e6e9f534bc9">WindowsFD</a>(<a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>&&) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& <a class="code" href="classos_1_1WindowsFD.html#ab780d87119c772425aa855260056d1a1">operator=</a>(<span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>&) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <a class="code" href="classo
s_1_1WindowsFD.html">WindowsFD</a>& <a class="code" href="classos_1_1WindowsFD.html#ab780d87119c772425aa855260056d1a1">operator=</a>(<a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>&&) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <a class="code" href="classos_1_1WindowsFD.html#ad2ce21d9f77710472e19843e3e86343e">~WindowsFD</a>() = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div><div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="classos_1_1WindowsFD.html#ab961444eec07c587c9a67122daf4fd33"> 124</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#ab961444eec07c587c9a67122daf4fd33">is_valid</a>()<span class="keyword"> const</span></d
iv><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="keyword"> </span>{</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">switch</span> (<a class="code" href="classos_1_1WindowsFD.html#a3ce17a730ace5352a1fc6d49f8336d52">type</a>()) {</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">case</span> <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5ad09c4cb1265f1772bb757a7af277b49f">Type::HANDLE</a>: {</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="comment">// Remember that both of these values can represent an invalid</span></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="comment">// handle.</span></div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>
0; <span class="keywordflow">return</span> <a class="code" href="classos_1_1WindowsFD.html#afcf316b6f5178ce1b9002c4202aebcf6">handle_</a> != <span class="keyword">nullptr</span> && <a class="code" href="classos_1_1WindowsFD.html#afcf316b6f5178ce1b9002c4202aebcf6">handle_</a> != INVALID_HANDLE_VALUE;</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  }</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">case</span> <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5a75fbea08c09e684e6b3f3961761354fa">Type::SOCKET</a>: {</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="comment">// Only this value is used for an invalid socket.</span></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordflow">return</span> <a class="code" href="clas
sos_1_1WindowsFD.html#a05016bee9531c79ce4576c9b8d9c9922">socket_</a> != INVALID_SOCKET;</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  }</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">default</span>: {</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  }</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  }</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  }</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span> </div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="comment">// NOTE: This allocates a C run-time file descriptor and ass
ociates</span></div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="comment">// it with the handle. At this point, the `HANDLE` should no longer</span></div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="comment">// be closed via `CloseHandle`, but instead close the returned `int`</span></div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="comment">// with `_close`. This method should almost never be used, and</span></div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="comment">// exists only for compatibility with 3rdparty dependencies.</span></div><div class="line"><a name="l00147"></a><span class="lineno"><a class="line" href="classos_1_1WindowsFD.html#a94b69cae4edb8f3549845fbfa0355b7c"> 147</a></span>  <span class="keywordtype">int</span> <a class="code" href="classos_1_1WindowsFD.html#a94b69ca
e4edb8f3549845fbfa0355b7c">crt</a>()<span class="keyword"> const</span></div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="keyword"> </span>{</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  CHECK_EQ(<a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5ad09c4cb1265f1772bb757a7af277b49f">Type::HANDLE</a>, <a class="code" href="classos_1_1WindowsFD.html#a3ce17a730ace5352a1fc6d49f8336d52">type</a>());</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="comment">// TODO(andschwa): Consider if we should overwrite `handle_`.</span></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  return ::_open_osfhandle(reinterpret_cast<intptr_t>(<a class="code" href="classos_1_1WindowsFD.html#afcf316b6f5178ce1b9002c4202aebcf6">handle_</a>), O_RDWR);</div><div class="line"><a name="l00152"></a><span clas
s="lineno"> 152</span>  }</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span> </div><div class="line"><a name="l00154"></a><span class="lineno"><a class="line" href="classos_1_1WindowsFD.html#a8ba56c5251264ab13aeaaa34cde39bdb"> 154</a></span>  <span class="keyword">operator</span> <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5ad09c4cb1265f1772bb757a7af277b49f">HANDLE</a>()<span class="keyword"> const</span></div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="keyword"> </span>{</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  CHECK_EQ(<a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5ad09c4cb1265f1772bb757a7af277b49f">Type::HANDLE</a>, <a class="code" href="classos_1_1WindowsFD.html#a3ce17a730ace5352a1fc6d49f8336d52">type</a>());</div><div class="line"><a name="l00157"></a><span class="lineno"
> 157</span>  <span class="keywordflow">return</span> <a class="code" href="classos_1_1WindowsFD.html#afcf316b6f5178ce1b9002c4202aebcf6">handle_</a>;</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  }</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span> </div><div class="line"><a name="l00160"></a><span class="lineno"><a class="line" href="classos_1_1WindowsFD.html#a0826bf646e11186502039fcf869b2afc"> 160</a></span>  <span class="keyword">operator</span> <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5a75fbea08c09e684e6b3f3961761354fa">SOCKET</a>()<span class="keyword"> const</span></div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="keyword"> </span>{</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  CHECK_EQ(<a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5
a75fbea08c09e684e6b3f3961761354fa">Type::SOCKET</a>, <a class="code" href="classos_1_1WindowsFD.html#a3ce17a730ace5352a1fc6d49f8336d52">type</a>());</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordflow">return</span> <a class="code" href="classos_1_1WindowsFD.html#a05016bee9531c79ce4576c9b8d9c9922">socket_</a>;</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  }</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="comment">// On Windows, libevent's `evutil_socket_t` is set to `intptr_t`.</span></div><div class="line"><a name="l00167"></a><span class="lineno"><a class="line" href="classos_1_1WindowsFD.html#aa58f87561c2785c34ae7f34ce59abfe2"> 167</a></span>  <span class="keyword">operator</span> intptr_t()<span class="keyword"> const</span></div><div clas
s="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="keyword"> </span>{</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  CHECK_EQ(<a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5a75fbea08c09e684e6b3f3961761354fa">Type::SOCKET</a>, <a class="code" href="classos_1_1WindowsFD.html#a3ce17a730ace5352a1fc6d49f8336d52">type</a>());</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordflow">return</span> <span class="keyword">static_cast<</span>intptr_t<span class="keyword">></span>(<a class="code" href="classos_1_1WindowsFD.html#a05016bee9531c79ce4576c9b8d9c9922">socket_</a>);</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  }</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span> </div><div class="line"><a name="l00173"></a><span class="lineno"><a class="line" href="c
lassos_1_1WindowsFD.html#a3ce17a730ace5352a1fc6d49f8336d52"> 173</a></span>  <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5">Type</a> <a class="code" href="classos_1_1WindowsFD.html#a3ce17a730ace5352a1fc6d49f8336d52">type</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> type_; }</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span> </div><div class="line"><a name="l00175"></a><span class="lineno"><a class="line" href="classos_1_1WindowsFD.html#a4dce5dbc3d019589b4b61d6d17e1da45"> 175</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#a4dce5dbc3d019589b4b61d6d17e1da45">is_overlapped</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> overlapped_; }</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span> </div><div class="line"><a name="l00177"></a><span class="lineno"> 1
77</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5">Type</a> type_;</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span> </div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keyword">union</span></div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  {</div><div class="line"><a name="l00182"></a><span class="lineno"><a class="line" href="classos_1_1WindowsFD.html#afcf316b6f5178ce1b9002c4202aebcf6"> 182</a></span>  <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5ad09c4cb1265f1772bb757a7af277b49f">HANDLE</a> <a class="code" href="classos_1_1WindowsFD.html#afcf316b6f5178ce1b9002c4202aebcf6">handle_</a>;</div><div class="line"><a name="l00183"></a><span class="lineno"><a clas
s="line" href="classos_1_1WindowsFD.html#a05016bee9531c79ce4576c9b8d9c9922"> 183</a></span>  SOCKET <a class="code" href="classos_1_1WindowsFD.html#a05016bee9531c79ce4576c9b8d9c9922">socket_</a>;</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  };</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span> </div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="keywordtype">bool</span> overlapped_;</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span> </div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="comment">// NOTE: This function is provided only for checking validity, thus</span></div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="comment">// it is private. It provides a view of a `WindowsFD` as an `int`.</span></div><div class="line"><a name="l0019
0"></a><span class="lineno"> 190</span>  <span class="comment">//</span></div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="comment">// TODO(andschwa): Fix all uses of this conversion to use `is_valid`</span></div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="comment">// directly instead, then remove the comparison operators. This</span></div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="comment">// would require writing an `int_fd` class for POSIX too, instead of</span></div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="comment">// just using `int`.</span></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keywordtype">int</span> get_valid()<span class="keyword"> const</span></div><div class="line"><a name="l00196"></a><span class="lineno"> 19
6</span> <span class="keyword"> </span>{</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">if</span> (<a class="code" href="classos_1_1WindowsFD.html#ab961444eec07c587c9a67122daf4fd33">is_valid</a>()) {</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  }</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  }</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span> </div><div class="line"><a name="l00204"></a><span class="lineno"> 204<
/span>  <span class="comment">// NOTE: These operators are used solely to support checking a</span></div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="comment">// `WindowsFD` against e.g. -1 or 0 for validity. Nothing else</span></div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="comment">// should have access to `get_valid()`.</span></div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keyword">friend</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#a64a9d1d43e26808ec565056c183ae56f">operator<</a>(<span class="keywordtype">int</span> left, <span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& right);</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keyword">friend</span> <span class="keywordtype">
bool</span> <a class="code" href="classos_1_1WindowsFD.html#a64a9d1d43e26808ec565056c183ae56f">operator<</a>(<span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& left, <span class="keywordtype">int</span> right);</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keyword">friend</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#aabdbd9806af44043dfff1cf9aeeee869">operator></a>(<span class="keywordtype">int</span> left, <span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& right);</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keyword">friend</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#aabdbd9806af44043dfff1cf9aeeee869">operator></a>(<span class="keyword">const</span> <a class="code" href="cl
assos_1_1WindowsFD.html">WindowsFD</a>& left, <span class="keywordtype">int</span> right);</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keyword">friend</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#afd05a43697b99aa8b7da8d56155b1a49">operator<=</a>(<span class="keywordtype">int</span> left, <span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& right);</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="keyword">friend</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#afd05a43697b99aa8b7da8d56155b1a49">operator<=</a>(<span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& left, <span class="keywordtype">int</span> right);</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</sp
an>  <span class="keyword">friend</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#a23d70e92fe2ee8da692f4e9b1b9e1e43">operator>=</a>(<span class="keywordtype">int</span> left, <span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& right);</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keyword">friend</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#a23d70e92fe2ee8da692f4e9b1b9e1e43">operator>=</a>(<span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& left, <span class="keywordtype">int</span> right);</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keyword">friend</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#a833e23bea1f10420bbd7139d1e8539ad">o
perator==</a>(<span class="keywordtype">int</span> left, <span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& right);</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keyword">friend</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#a833e23bea1f10420bbd7139d1e8539ad">operator==</a>(<span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& left, <span class="keywordtype">int</span> right);</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keyword">friend</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#a342803d2a16f81ca20f0e0c1c2e598d0">operator!=</a>(<span class="keywordtype">int</span> left, <span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& right);</div><d
iv class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keyword">friend</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#a342803d2a16f81ca20f0e0c1c2e598d0">operator!=</a>(<span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& left, <span class="keywordtype">int</span> right);</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span> };</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span> </div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span> </div><div class="line"><a name="l00222"></a><span class="lineno"><a class="line" href="namespaceos.html#abc0226f448b014a39a8113f06482d6c9"> 222</a></span> <span class="keyword">inline</span> std::ostream& <a class="code" href="namespaceos.html#adf8abf607ec106e38317de03bcdda834">operator<<</a>(std::ostream& stream, <sp
an class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5">WindowsFD::Type</a>& fd)</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span> {</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">switch</span> (fd) {</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordflow">case</span> <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5ad09c4cb1265f1772bb757a7af277b49f">WindowsFD::Type::HANDLE</a>: {</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  stream << <span class="stringliteral">"WindowsFD::Type::HANDLE"</span>;</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keywordflow">return</span> stream;</div><div class="line"><a name="l00228"></a><span
class="lineno"> 228</span>  }</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordflow">case</span> <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5a75fbea08c09e684e6b3f3961761354fa">WindowsFD::Type::SOCKET</a>: {</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  stream << <span class="stringliteral">"WindowsFD::Type::SOCKET"</span>;</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keywordflow">return</span> stream;</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  }</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordflow">default</span>: {</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  stream << <span class="stringliteral">"WindowsFD::Ty
pe::UNKNOWN"</span>;</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordflow">return</span> stream;</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  }</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  }</div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span> }</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span> </div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span> </div><div class="line"><a name="l00241"></a><span class="lineno"><a class="line" href="namespaceos.html#ae7cfc38dfd6783b8d347893cb1dd6b8f"> 241</a></span> <span class="keyword">inline</span> std::ostream& <a class="code" href="namespaceos.html#adf8abf607ec106e38317de03bcdda834">operator<<</a>(std::ostream& stream, <span class="keyword">const</span> <a class="code" href="classos_1_1W
indowsFD.html">WindowsFD</a>& fd)</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span> {</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  stream << fd.<a class="code" href="classos_1_1WindowsFD.html#a3ce17a730ace5352a1fc6d49f8336d52">type</a>() << <span class="stringliteral">"="</span>;</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keywordflow">switch</span> (fd.<a class="code" href="classos_1_1WindowsFD.html#a3ce17a730ace5352a1fc6d49f8336d52">type</a>()) {</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="keywordflow">case</span> <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5ad09c4cb1265f1772bb757a7af277b49f">WindowsFD::Type::HANDLE</a>: {</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  stream << static_cast<
;HANDLE>(fd);</div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keywordflow">return</span> stream;</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  }</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keywordflow">case</span> <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5a75fbea08c09e684e6b3f3961761354fa">WindowsFD::Type::SOCKET</a>: {</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  stream << static_cast<SOCKET>(fd);</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keywordflow">return</span> stream;</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  }</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keywordflow">default
</span>: {</div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  stream << <span class="stringliteral">"UNKNOWN"</span>;</div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="keywordflow">return</span> stream;</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  }</div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  }</div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span> }</div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span> </div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span> </div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="comment">// NOTE: The following operators implement all the comparisons</span></div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span> <
span class="comment">// possible a `WindowsFD` type and an `int`. The point of this is that</span></div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span> <span class="comment">// the `WindowsFD` type must act like an `int` for compatibility</span></div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span> <span class="comment">// reasons (e.g. checking validity through `fd < 0`), without actually</span></div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span> <span class="comment">// being castable to an `int` to avoid ambiguous types.</span></div><div class="line"><a name="l00266"></a><span class="lineno"><a class="line" href="namespaceos.html#a50365c5112577886332b1072de202c5f"> 266</a></span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#a64a9d1d43e26808ec565056c183ae56f">operator<</a>(<span class="keywordtype">int</s
pan> left, <span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& right)</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span> {</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="keywordflow">return</span> left < right.get_valid();</div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span> }</div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span> </div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span> </div><div class="line"><a name="l00272"></a><span class="lineno"><a class="line" href="namespaceos.html#a3d7a472710fa4652c0074074fec9973d"> 272</a></span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#a64a9d1d43e26808ec565056c183ae56f">operator<</a>(<span class="keyword">const</span> <a class="code
" href="classos_1_1WindowsFD.html">WindowsFD</a>& left, <span class="keywordtype">int</span> right)</div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span> {</div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="keywordflow">return</span> left.get_valid() < right;</div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span> }</div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span> </div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span> </div><div class="line"><a name="l00278"></a><span class="lineno"><a class="line" href="namespaceos.html#a01c61a529abd402f5c7e1307d24f5378"> 278</a></span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#aabdbd9806af44043dfff1cf9aeeee869">operator></a>(<span class="keywordtype">int</span> left, <span class="keyword">c
onst</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& right)</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span> {</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="keywordflow">return</span> left > right.get_valid();</div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span> }</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span> </div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span> </div><div class="line"><a name="l00284"></a><span class="lineno"><a class="line" href="namespaceos.html#a9b3ec4a9596510ae4f5147b50d50178b"> 284</a></span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#aabdbd9806af44043dfff1cf9aeeee869">operator></a>(<span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html"
>WindowsFD</a>& left, <span class="keywordtype">int</span> right)</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span> {</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="keywordflow">return</span> left.get_valid() > right;</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span> }</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span> </div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span> </div><div class="line"><a name="l00290"></a><span class="lineno"><a class="line" href="namespaceos.html#ae0567bbfde960caa1f0e7282ebba1129"> 290</a></span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#afd05a43697b99aa8b7da8d56155b1a49">operator<=</a>(<span class="keywordtype">int</span> left, <span class="keyword">const</span> <a class="code" href=
"classos_1_1WindowsFD.html">WindowsFD</a>& right)</div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span> {</div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <span class="keywordflow">return</span> left <= right.get_valid();</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span> }</div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span> </div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span> </div><div class="line"><a name="l00296"></a><span class="lineno"><a class="line" href="namespaceos.html#a4a0677e666a295e048cf4c65100a9e19"> 296</a></span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#afd05a43697b99aa8b7da8d56155b1a49">operator<=</a>(<span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& left, <span
class="keywordtype">int</span> right)</div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span> {</div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="keywordflow">return</span> left.get_valid() <= right;</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span> }</div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span> </div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span> </div><div class="line"><a name="l00302"></a><span class="lineno"><a class="line" href="namespaceos.html#aff40faf624abae939675cdfff558570b"> 302</a></span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#a23d70e92fe2ee8da692f4e9b1b9e1e43">operator>=</a>(<span class="keywordtype">int</span> left, <span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">Wi
ndowsFD</a>& right)</div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span> {</div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keywordflow">return</span> left >= right.get_valid();</div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span> }</div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span> </div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span> </div><div class="line"><a name="l00308"></a><span class="lineno"><a class="line" href="namespaceos.html#a7212150e865b156fdae90c1052407042"> 308</a></span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#a23d70e92fe2ee8da692f4e9b1b9e1e43">operator>=</a>(<span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& left, <span class="keywordtype">int</span
> right)</div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span> {</div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="keywordflow">return</span> left.get_valid() >= right;</div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span> }</div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span> </div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span> </div><div class="line"><a name="l00314"></a><span class="lineno"><a class="line" href="namespaceos.html#a964a363626326ed56a030b26813124a7"> 314</a></span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#a833e23bea1f10420bbd7139d1e8539ad">operator==</a>(<span class="keywordtype">int</span> left, <span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& right)</div><div
class="line"><a name="l00315"></a><span class="lineno"> 315</span> {</div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <span class="keywordflow">return</span> left == right.get_valid();</div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span> }</div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span> </div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span> </div><div class="line"><a name="l00320"></a><span class="lineno"><a class="line" href="namespaceos.html#a5c6de77e356412060c38c5e41cdd5ba1"> 320</a></span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#a833e23bea1f10420bbd7139d1e8539ad">operator==</a>(<span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& left, <span class="keywordtype">int</span> right)</div><div class="line"><a name
="l00321"></a><span class="lineno"> 321</span> {</div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="keywordflow">return</span> left.get_valid() == right;</div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span> }</div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span> </div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span> </div><div class="line"><a name="l00326"></a><span class="lineno"><a class="line" href="namespaceos.html#ab3f13e530d689c5eb2d15b921a55c2df"> 326</a></span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#a342803d2a16f81ca20f0e0c1c2e598d0">operator!=</a>(<span class="keywordtype">int</span> left, <span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& right)</div><div class="line"><a name="l00327"></a><span c
lass="lineno"> 327</span> {</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="keywordflow">return</span> left != right.get_valid();</div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span> }</div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span> </div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span> </div><div class="line"><a name="l00332"></a><span class="lineno"><a class="line" href="namespaceos.html#adfa6e9183e6bc24e95a45fa3f095ea37"> 332</a></span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classos_1_1WindowsFD.html#a342803d2a16f81ca20f0e0c1c2e598d0">operator!=</a>(<span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& left, <span class="keywordtype">int</span> right)</div><div class="line"><a name="l00333"></a><span class="lineno"> 333</
span> {</div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="keywordflow">return</span> left.get_valid() != right;</div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span> }</div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span> </div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span> </div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span> <span class="comment">// NOTE: This operator exists so that `WindowsFD` can be used in an</span></div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span> <span class="comment">// `unordered_map` (and other STL containers requiring equality).</span></div><div class="line"><a name="l00340"></a><span class="lineno"><a class="line" href="namespaceos.html#a233ee9ab58e9c214bb9dada3b4cde87a"> 340</a></span> <span class="keyword">inline</span> <span class="keywordtype
">bool</span> <a class="code" href="classos_1_1WindowsFD.html#a833e23bea1f10420bbd7139d1e8539ad">operator==</a>(<span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& left, <span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a>& right)</div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span> {</div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <span class="comment">// This is `true` even if the types mismatch because we want</span></div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <span class="comment">// `WindowsFD(-1)` to compare as equivalent to an invalid `HANDLE`</span></div><div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <span class="comment">// or `SOCKET`, even though it is technically of type `HANDLE`.</span></div><div class="line"><a name="l00345"></a><sp
an class="lineno"> 345</span>  <span class="keywordflow">if</span> (!left.<a class="code" href="classos_1_1WindowsFD.html#ab961444eec07c587c9a67122daf4fd33">is_valid</a>() && !right.<a class="code" href="classos_1_1WindowsFD.html#ab961444eec07c587c9a67122daf4fd33">is_valid</a>()) {</div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  }</div><div class="line"><a name="l00348"></a><span class="lineno"> 348</span> </div><div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="comment">// Otherwise mismatched types are not equivalent.</span></div><div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  <span class="keywordflow">if</span> (left.<a class="code" href="classos_1_1WindowsFD.html#a3ce17a730ace5352a1fc6d49f8
336d52">type</a>() != right.<a class="code" href="classos_1_1WindowsFD.html#a3ce17a730ace5352a1fc6d49f8336d52">type</a>()) {</div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  }</div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span> </div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="keywordflow">switch</span> (left.<a class="code" href="classos_1_1WindowsFD.html#a3ce17a730ace5352a1fc6d49f8336d52">type</a>()) {</div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <span class="keywordflow">case</span> <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5ad09c4cb1265f1772bb757a7af277b49f">WindowsFD::Type::HANDLE</a>: {</div><div class="line"><a name="l00356
"></a><span class="lineno"> 356</span>  <span class="keywordflow">return</span> <span class="keyword">static_cast<</span><a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5ad09c4cb1265f1772bb757a7af277b49f">HANDLE</a><span class="keyword">></span>(left) == static_cast<HANDLE>(right);</div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  }</div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="keywordflow">case</span> <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5a75fbea08c09e684e6b3f3961761354fa">WindowsFD::Type::SOCKET</a>: {</div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <span class="keywordflow">return</span> <span class="keyword">static_cast<</span><a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5a75fbea08c09e684e6b3f3961761354fa">SOCKET</a
><span class="keyword">></span>(left) == static_cast<SOCKET>(right);</div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  }</div><div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  }</div><div class="line"><a name="l00362"></a><span class="lineno"> 362</span> </div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <a class="code" href="unreachable_8hpp.html#a0bc63b24b654ca433be7b97a3edde132">UNREACHABLE</a>();</div><div class="line"><a name="l00364"></a><span class="lineno"> 364</span> }</div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span> </div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span> } <span class="comment">// namespace os {</span></div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span> </div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span> <span cl
ass="keyword">namespace </span><a class="code" href="namespacestd.html">std</a> {</div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span> </div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span> <span class="comment">// NOTE: This specialization exists so that `WindowsFD` can be used in</span></div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span> <span class="comment">// an `unordered_map` (and other STL containers requiring a hash).</span></div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span> <span class="keyword">template</span> <></div><div class="line"><a name="l00373"></a><span class="lineno"><a class="line" href="structstd_1_1hash_3_01os_1_1WindowsFD_01_4.html"> 373</a></span> <span class="keyword">struct </span>hash<<a class="code" href="namespaceos.html">os</a>::<a class="code" href="classos_1_1WindowsFD.html#a68733e16ee25fe8602557e6e9f534bc9">Window
sFD</a>></div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span> {</div><div class="line"><a name="l00375"></a><span class="lineno"><a class="line" href="structstd_1_1hash_3_01os_1_1WindowsFD_01_4.html#a2a5618e5e307b2d36c98f14d1600636c"> 375</a></span>  <span class="keyword">using</span> <a class="code" href="classos_1_1WindowsFD.html">argument_type</a> = <a class="code" href="classos_1_1WindowsFD.html">os::WindowsFD</a>;</div><div class="line"><a name="l00376"></a><span class="lineno"><a class="line" href="structstd_1_1hash_3_01os_1_1WindowsFD_01_4.html#a784a468593b723beb6be44656cc9f67a"> 376</a></span>  <span class="keyword">using</span> <a class="code" href="structstd_1_1hash_3_01os_1_1WindowsFD_01_4.html#a784a468593b723beb6be44656cc9f67a">result_type</a> = size_t;</div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span> </div><div class="line"><a name="l00378"></a><span class="lineno"><a class="line" href="str
uctstd_1_1hash_3_01os_1_1WindowsFD_01_4.html#ace282835b0ca66ecf2753a5671449f4e"> 378</a></span>  <a class="code" href="structstd_1_1hash_3_01os_1_1WindowsFD_01_4.html#a784a468593b723beb6be44656cc9f67a">result_type</a> <a class="code" href="structstd_1_1hash_3_01os_1_1WindowsFD_01_4.html#ace282835b0ca66ecf2753a5671449f4e">operator()</a>(<span class="keyword">const</span> <a class="code" href="classos_1_1WindowsFD.html">argument_type</a>& fd) <span class="keyword">const</span> noexcept</div><div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  {</div><div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keywordflow">switch</span> (fd.type()) {</div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <span class="keywordflow">case</span> <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5ad09c4cb1265f1772bb757a7af277b49f">os::WindowsFD::Type::HANDL
E</a>: {</div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  <span class="keywordflow">return</span> std::hash<HANDLE>{}(<span class="keyword">static_cast<</span><a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5ad09c4cb1265f1772bb757a7af277b49f">HANDLE</a><span class="keyword">></span>(fd));</div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  }</div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="keywordflow">case</span> <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5a75fbea08c09e684e6b3f3961761354fa">os::WindowsFD::Type::SOCKET</a>: {</div><div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="keywordflow">return</span> std::hash<SOCKET>{}(<span class="keyword">static_cast<</span><a class="code" href="classos_1_1WindowsFD.html#ac0
377db41e1c167339c97dbd69c79ae5a75fbea08c09e684e6b3f3961761354fa">SOCKET</a><span class="keyword">></span>(fd));</div><div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  }</div><div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  }</div><div class="line"><a name="l00388"></a><span class="lineno"> 388</span> </div><div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <a class="code" href="unreachable_8hpp.html#a0bc63b24b654ca433be7b97a3edde132">UNREACHABLE</a>();</div><div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  }</div><div class="line"><a name="l00391"></a><span class="lineno"> 391</span> };</div><div class="line"><a name="l00392"></a><span class="lineno"> 392</span> </div><div class="line"><a name="l00393"></a><span class="lineno"> 393</span> } <span class="comment">// namespace std {</span></div><div class="line"><a name="l00394"></a
><span class="lineno"> 394</span> </div><div class="line"><a name="l00395"></a><span class="lineno"> 395</span> <span class="preprocessor">#endif // __STOUT_OS_WINDOWS_FD_HPP__</span></div><div class="ttc" id="classos_1_1WindowsFD_html_ab961444eec07c587c9a67122daf4fd33"><div class="ttname"><a href="classos_1_1WindowsFD.html#ab961444eec07c587c9a67122daf4fd33">os::WindowsFD::is_valid</a></div><div class="ttdeci">bool is_valid() const </div><div class="ttdef"><b>Definition:</b> fd.hpp:124</div></div>
-<div class="ttc" id="classos_1_1WindowsFD_html_a33cd936b5641a029b1ea2da80d71c748"><div class="ttname"><a href="classos_1_1WindowsFD.html#a33cd936b5641a029b1ea2da80d71c748">os::WindowsFD::WindowsFD</a></div><div class="ttdeci">WindowsFD(SOCKET socket, bool overlapped=true)</div><div class="ttdef"><b>Definition:</b> fd.hpp:85</div></div>
-<div class="ttc" id="classos_1_1WindowsFD_html_a3ce17a730ace5352a1fc6d49f8336d52"><div class="ttname"><a href="classos_1_1WindowsFD.html#a3ce17a730ace5352a1fc6d49f8336d52">os::WindowsFD::type</a></div><div class="ttdeci">Type type() const </div><div class="ttdef"><b>Definition:</b> fd.hpp:173</div></div>
-<div class="ttc" id="classos_1_1WindowsFD_html_a05016bee9531c79ce4576c9b8d9c9922"><div class="ttname"><a href="classos_1_1WindowsFD.html#a05016bee9531c79ce4576c9b8d9c9922">os::WindowsFD::socket_</a></div><div class="ttdeci">SOCKET socket_</div><div class="ttdef"><b>Definition:</b> fd.hpp:183</div></div>
-<div class="ttc" id="classos_1_1WindowsFD_html_a421497a56ee02f01dd4f0773d07eaa76"><div class="ttname"><a href="classos_1_1WindowsFD.html#a421497a56ee02f01dd4f0773d07eaa76">os::WindowsFD::WindowsFD</a></div><div class="ttdeci">WindowsFD(HANDLE handle, bool overlapped=false)</div><div class="ttdef"><b>Definition:</b> fd.hpp:71</div></div>
-<div class="ttc" id="classos_1_1WindowsFD_html"><div class="ttname"><a href="classos_1_1WindowsFD.html">os::WindowsFD</a></div><div class="ttdef"><b>Definition:</b> fd.hpp:50</div></div>
+<a href="fd_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// you may not use this file except in compliance with the License.</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// You may obtain a copy of the License at</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">//</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">//</span></di
v><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// See the License for the specific language governing permissions and</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// limitations under the License.</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div><div class="line"><a
name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#ifndef __STOUT_OS_WINDOWS_FD_HPP__</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#define __STOUT_OS_WINDOWS_FD_HPP__</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <fcntl.h></span> <span class="comment">// For `O_RDWR`.</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <io.h></span> <span class="comment">// For `_open_osfhandle`.</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include <array></span></div><div class="line"><a
name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <atomic></span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <memory></span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <ostream></span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <type_traits></span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <<a class="code" href="stout_2include_2stout_2check_8hpp.html">stout/check.hpp</a>></span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <<a class="code" href="nothing_
8hpp.html">stout/nothing.hpp</a>></span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <<a class="code" href="synchronized_8hpp.html">stout/synchronized.hpp</a>></span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <<a class="code" href="try_8hpp.html">stout/try.hpp</a>></span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <<a class="code" href="unreachable_8hpp.html">stout/unreachable.hpp</a>></span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <<a class="code" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html">stout/windows.hpp</a>></span> <span class="comment">// For `WinSock2.h`.</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</
span> </div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="keyword">namespace </span><a class="code" href="namespaceos.html">os</a> {</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">// The `WindowsFD` class exists to provide an common interface with the POSIX</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment">// file descriptor. While the bare `int` representation of the POSIX file</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">// descriptor API is undesirable, we rendezvous there in order to maintain the</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">// existing code in Mesos.</span></div><div class="line"><
a name="l00038"></a><span class="lineno"> 38</span> <span class="comment">//</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment">// In the platform-agnostic code paths, the `int_fd` type is aliased to</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">// `WindowsFD`. The `os::*` functions return a type appropriate to the platform,</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment">// which allows us to write code like this:</span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment">//</span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment">// Try<int_fd> fd = os::open(...);</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment
">//</span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment">// The `WindowsFD` constructs off one of:</span></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment">// (1) `HANDLE` - from the Win32 API</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment">// (2) `SOCKET` - from the WinSock API</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment">//</span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment">// The `os::*` functions then take an instance of `WindowsFD`, examines</span></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment">// the state and dispatches to the appropriate API.</span></div><div class="line"><a name="l00051"></a><span class="lineno"
> 51</span> </div><div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="classos_1_1WindowsFD.html"> 52</a></span> <span class="keyword">class </span><a class="code" href="classos_1_1WindowsFD.html">WindowsFD</a></div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> {</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5"> 55</a></span>  <span class="keyword">enum class</span> <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5">Type</a></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  {</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1
c167339c97dbd69c79ae5ad09c4cb1265f1772bb757a7af277b49f">HANDLE</a>,</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5a75fbea08c09e684e6b3f3961761354fa">SOCKET</a></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  };</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="comment">// The `HANDLE` here is expected to be file handles. Specifically,</span></div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="comment">// `HANDLE`s returned by file API such as `CreateFile`. There are</span></div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="comment">// APIs that return `HANDLE`s with different error values, and</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="comment">// therefore must be handled accordingly. For example, a thread API</span></div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="comment">// such as `CreateThread` returns `NULL` as the error value, rather</span></div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="comment">// than `INVALID_HANDLE_VALUE`.</span></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="comment">//</span></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="comment">// TODO(mpark): Consider adding a second parameter which tells us</span></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="comment">// what the error values are.</span></div><div class="line"><a name="l00070
"></a><span class="lineno"> 70</span>  static_assert(</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  std::is_same<HANDLE, void*>::value,</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="stringliteral">"Expected `HANDLE` to be of type `void*`."</span>);</div><div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="classos_1_1WindowsFD.html#a421497a56ee02f01dd4f0773d07eaa76"> 73</a></span>  <span class="keyword">explicit</span> <a class="code" href="classos_1_1WindowsFD.html#a421497a56ee02f01dd4f0773d07eaa76">WindowsFD</a>(<a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5ad09c4cb1265f1772bb757a7af277b49f">HANDLE</a> handle, <span class="keywordtype">bool</span> overlapped = <span class="keyword">false</span>)</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  : type_(<
a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5">Type</a>::<a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5ad09c4cb1265f1772bb757a7af277b49f">HANDLE</a>),</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <a class="code" href="classos_1_1WindowsFD.html#afcf316b6f5178ce1b9002c4202aebcf6">handle_</a>(handle),</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  overlapped_(overlapped),</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  iocp_(<a class="code" href="namespacestd.html">std</a>::make_shared<IOCPData>())</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  {}</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="comment">// The `SOCKET
` here is expected to be Windows sockets, such as that</span></div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">// used by the Windows Sockets 2 library. The only expected error</span></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="comment">// value is `INVALID_SOCKET`.</span></div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="comment">//</span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">// Note that sockets should almost always be overlapped. We do provide</span></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="comment">// a way in stout to create non-overlapped sockets, so for completeness, we</span></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="comment">// have an o
verlapped parameter in the constructor.</span></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  static_assert(</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  std::is_same<SOCKET, unsigned __int64>::value,</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="stringliteral">"Expected `SOCKET` to be of type `unsigned __int64`."</span>);</div><div class="line"><a name="l00090"></a><span class="lineno"><a class="line" href="classos_1_1WindowsFD.html#a33cd936b5641a029b1ea2da80d71c748"> 90</a></span>  <span class="keyword">explicit</span> <a class="code" href="classos_1_1WindowsFD.html#a33cd936b5641a029b1ea2da80d71c748">WindowsFD</a>(SOCKET <a class="code" href="namespacerouting.html#aee51d4e36a57bab7d6ada56e15467370">socket</a>, <span class="keywordtype">bool</span> overlapped = <span class="keyword">true</span>)</div><div class="line"><a n
ame="l00091"></a><span class="lineno"> 91</span>  : type_(<a class="code" href="classos_1_1WindowsFD.html#ac0377db41e1c167339c97dbd69c79ae5">Type</a>::SOCKET),</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <a class="code" href="classos_1_1WindowsFD.html#a05016bee9531c79ce4576c9b8d9c9922">socket_</a>(socket),</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  overlapped_(overlapped),</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  iocp_(<a class="code" href="namespacestd.html">std</a>::make_shared<IOCPData>())</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  {}</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> </div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="comment">// On Windows, libevent's `evutil_socket_t` is set to `intptr
_t`.</span></div><div class="line"><a name="l00098"></a><span class="lineno"><a class="line" href="classos_1_1WindowsFD.html#a43994eeb484a426990af657f691f66e0"> 98</a></span>  <span class="keyword">explicit</span> <a class="code" h
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