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| <div class="title">exists.hpp</div> </div> |
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| <a href="windows_2exists_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></div> |
| <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_EXISTS_HPP__</span></div> |
| <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor"></span><span class="preprocessor">#define __STOUT_OS_WINDOWS_EXISTS_HPP__</span></div> |
| <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor"></span></div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <string></span></div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div> |
| <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include <<a class="code" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html">stout/windows.hpp</a>></span></div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <<a class="code" href="realpath_8hpp.html">stout/os/realpath.hpp</a>></span></div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div> |
| <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">namespace </span>os {</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> </div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="namespaceos.html#a69b3969276ffa4cb698b9431ee43bd7c">exists</a>(<span class="keyword">const</span> std::string& path)</div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> {</div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <a class="code" href="classResult.html">Result<std::string></a> <a class="code" href="namespaceprocess.html#a112cf0f14ff608d490b910aab93d8e0d">absolutePath</a> = <a class="code" href="namespaceos.html#a7fd21154b15bc00e31e2b457cab83ff2">os::realpath</a>(path);</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="keywordflow">if</span> (!absolutePath.<a class="code" href="classResult.html#a85eaa52037223d71092e65701c166562">isSome</a>()) {</div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  }</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">// NOTE: `GetFileAttributes` redirects to either `GetFileAttributesA`</span></div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="comment">// (ASCII) or `GetFileAttributesW` (for `wchar`s). It returns</span></div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="comment">// `INVALID_FILE_ATTRIBUTES` if the file could not be opened for any reason.</span></div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="comment">// Checking for one of two 'not found' error codes (`ERROR_FILE_NOT_FOUND` or</span></div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="comment">// `ERROR_PATH_NOT_FOUND`) is a reliable test for whether the file or</span></div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="comment">// directory exists. See also [1] for more information on this technique.</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">// [1] http://blogs.msdn.com/b/oldnewthing/archive/2007/10/23/5612082.aspx</span></div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  DWORD attributes = GetFileAttributes(absolutePath.<a class="code" href="classResult.html#aedf79f3b14dcda5791b84a64ada4d412">get</a>().c_str());</div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">if</span> (attributes == INVALID_FILE_ATTRIBUTES) {</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  DWORD <a class="code" href="namespacemesos_1_1internal_1_1slave_1_1cni_1_1spec.html#ae58e703656ab4a1bd5d9870441236727">error</a> = GetLastError();</div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">if</span> (error == ERROR_FILE_NOT_FOUND || error == ERROR_PATH_NOT_FOUND) {</div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</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"> 50</span> </div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span> }</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> </div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment">// Determine if the process identified by pid exists.</span></div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment">// NOTE: Zombie processes have a pid and therefore exist. See</span></div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment">// os::process(pid) to get details of a process.</span></div> |
| <div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="namespaceos.html#a69b3969276ffa4cb698b9431ee43bd7c">exists</a>(<a class="code" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html#ab03ced250ed239bc3b50b669493997f9">pid_t</a> pid)</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>  <a class="code" href="namespacerouting_1_1queueing_1_1ingress.html#a934208b6017d0a9aed90b6594bb8292f">HANDLE</a> handle = OpenProcess(PROCESS_QUERY_LIMITED_INFORMATION, FALSE, pid);</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordtype">bool</span> has_handle = <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">if</span> (handle != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  has_handle = <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  CloseHandle(handle);</div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  }</div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">return</span> has_handle;</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span> }</div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div> |
| <div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div> |
| <div class="line"><a name="l00073"></a><span class="lineno"> 73</span> } <span class="comment">// namespace os {</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="preprocessor">#endif // __STOUT_OS_WINDOWS_EXISTS_HPP__</span></div> |
| <div class="ttc" id="realpath_8hpp_html"><div class="ttname"><a href="realpath_8hpp.html">realpath.hpp</a></div></div> |
| <div class="ttc" id="namespaceos_html_a69b3969276ffa4cb698b9431ee43bd7c"><div class="ttname"><a href="namespaceos.html#a69b3969276ffa4cb698b9431ee43bd7c">os::exists</a></div><div class="ttdeci">bool exists(const std::string &path)</div><div class="ttdef"><b>Definition:</b> exists.hpp:26</div></div> |
| <div class="ttc" id="3rdparty_2stout_2include_2stout_2windows_8hpp_html"><div class="ttname"><a href="3rdparty_2stout_2include_2stout_2windows_8hpp.html">windows.hpp</a></div></div> |
| <div class="ttc" id="classResult_html"><div class="ttname"><a href="classResult.html">Result</a></div><div class="ttdef"><b>Definition:</b> result.hpp:40</div></div> |
| <div class="ttc" id="3rdparty_2stout_2include_2stout_2windows_8hpp_html_ab03ced250ed239bc3b50b669493997f9"><div class="ttname"><a href="3rdparty_2stout_2include_2stout_2windows_8hpp.html#ab03ced250ed239bc3b50b669493997f9">pid_t</a></div><div class="ttdeci">DWORD pid_t</div><div class="ttdef"><b>Definition:</b> windows.hpp:170</div></div> |
| <div class="ttc" id="namespacerouting_1_1queueing_1_1ingress_html_a934208b6017d0a9aed90b6594bb8292f"><div class="ttname"><a href="namespacerouting_1_1queueing_1_1ingress.html#a934208b6017d0a9aed90b6594bb8292f">routing::queueing::ingress::HANDLE</a></div><div class="ttdeci">constexpr Handle HANDLE</div><div class="ttdef"><b>Definition:</b> ingress.hpp:37</div></div> |
| <div class="ttc" id="classResult_html_aedf79f3b14dcda5791b84a64ada4d412"><div class="ttname"><a href="classResult.html#aedf79f3b14dcda5791b84a64ada4d412">Result::get</a></div><div class="ttdeci">const T & get() const </div><div class="ttdef"><b>Definition:</b> result.hpp:112</div></div> |
| <div class="ttc" id="namespacemesos_1_1internal_1_1slave_1_1cni_1_1spec_html_ae58e703656ab4a1bd5d9870441236727"><div class="ttname"><a href="namespacemesos_1_1internal_1_1slave_1_1cni_1_1spec.html#ae58e703656ab4a1bd5d9870441236727">mesos::internal::slave::cni::spec::error</a></div><div class="ttdeci">std::string error(const std::string &msg, uint32_t code)</div></div> |
| <div class="ttc" id="namespaceprocess_html_a112cf0f14ff608d490b910aab93d8e0d"><div class="ttname"><a href="namespaceprocess.html#a112cf0f14ff608d490b910aab93d8e0d">process::absolutePath</a></div><div class="ttdeci">std::string absolutePath(const std::string &path)</div><div class="ttdoc">Get the request absolutePath path with delegate prefix. </div></div> |
| <div class="ttc" id="classResult_html_a85eaa52037223d71092e65701c166562"><div class="ttname"><a href="classResult.html#a85eaa52037223d71092e65701c166562">Result::isSome</a></div><div class="ttdeci">bool isSome() const </div><div class="ttdef"><b>Definition:</b> result.hpp:108</div></div> |
| <div class="ttc" id="namespaceos_html_a7fd21154b15bc00e31e2b457cab83ff2"><div class="ttname"><a href="namespaceos.html#a7fd21154b15bc00e31e2b457cab83ff2">os::realpath</a></div><div class="ttdeci">Result< std::string > realpath(const std::string &path)</div><div class="ttdef"><b>Definition:</b> realpath.hpp:26</div></div> |
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