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Posted to commits@mesos.apache.org by gi...@apache.org on 2018/05/18 09:30:12 UTC
[21/48] mesos-site git commit: Updated the website built from mesos
SHA: c020a13.
http://git-wip-us.apache.org/repos/asf/mesos-site/blob/d7774475/content/api/latest/c++/pstree_8hpp_source.html
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<div class="title">pstree.hpp</div> </div>
</div><!--header-->
<div class="contents">
-<a href="pstree_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_PSTREE_HPP__</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#define __STOUT_OS_PSTREE_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 <list></span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <set></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 <<a class="code" href="error_8hpp.html">stout/error.hpp</a>></span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> 
;<span class="preprocessor">#include <<a class="code" href="foreach_8hpp.html">stout/foreach.hpp</a>></span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <<a class="code" href="none_8hpp.html">stout/none.hpp</a>></span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <<a class="code" href="option_8hpp.html">stout/option.hpp</a>></span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <<a class="code" href="stringify_8hpp.html">stout/stringify.hpp</a>></span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <<a class="code" href="try_8hpp.html">stout/try.hpp</a>></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="preprocessor">#include <<a class="code" href="stout_2include_2stout_2os_2process_8hpp.html">stout/os/process.hpp</a>></span></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> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">namespace </span><a class="code" href="namespaceos.html">os</a> {</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment">// Forward declaration.</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="keyword">inline</span> <a class="code" href="classTry.html">Try<std::list<Process></a>> <a class="code" href="namespaceos.htm
l#aa98ca8ac255e2b9c689979a1b40084d3">processes</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> </div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment">// Returns a process tree rooted at the specified pid using the</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">// specified list of processes (or an error if one occurs).</span></div><div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="namespaceos.html#ac324ef4f356d10686ce7024257251443"> 37</a></span> <span class="keyword">inline</span> <a class="code" href="classTry.html">Try<ProcessTree></a> <a class="code" href="namespaceos.html#ac324ef4f356d10686ce7024257251443">pstree</a>(</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>
60; <a class="code" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html#ab03ced250ed239bc3b50b669493997f9">pid_t</a> pid,</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keyword">const</span> std::list<Process>& <a class="code" href="namespaceos.html#aa98ca8ac255e2b9c689979a1b40084d3">processes</a>)</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> {</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  std::list<ProcessTree> <a class="code" href="namespaceos.html#a363f959e94e301ec8ec483e3c22258a6">children</a>;</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">foreach</span> (<span class="keyword">const</span> <a class="code" href="structos_1_1Process.html">Process</a>& <a class="code" href="namespaceprocess.html">process</a>, processes) {</div><div class="line"><a name="l00043"><
/a><span class="lineno"> 43</span>  <span class="keywordflow">if</span> (process.<a class="code" href="structos_1_1Process.html#a3865855abd794165fef4465bb3c7eb54">parent</a> == pid) {</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <a class="code" href="classTry.html">Try<ProcessTree></a> tree = <a class="code" href="namespaceos.html#ac324ef4f356d10686ce7024257251443">pstree</a>(process.<a class="code" href="structos_1_1Process.html#a8c68e0a8c8693f2acacf0f428ea0a493">pid</a>, processes);</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">if</span> (tree.<a class="code" href="classTry.html#a0b98f95163b8a38daafd1651b043a276">isError</a>()) {</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(tree.<a class="code" href="classTry.html#aec4a11
ddd3c036e889d90b7eb6258ba7">error</a>());</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  }</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  children.push_back(tree.<a class="code" href="classTry.html#a8bc7f43e75a47111ea18e9c83b007be5">get</a>());</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> </div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">foreach</span> (<span class="keyword">const</span> <a class="code" href="structos_1_1Process.html">Process</a>& process, processes) {</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordflow">if</span> (process.<a class="code" href="struc
tos_1_1Process.html#a8c68e0a8c8693f2acacf0f428ea0a493">pid</a> == pid) {</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">return</span> <a class="code" href="classos_1_1ProcessTree.html">ProcessTree</a>(process, children);</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  }</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> </div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(<span class="stringliteral">"No process found at "</span> + <a class="code" href="namespacens.html#a28116b46e6543597a11733424cd1aa20">stringify</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> </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="comment">// Returns a process tree for the specified pid (or all processes if</span></div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment">// pid is none or the current process if pid is 0).</span></div><div class="line"><a name="l00064"></a><span class="lineno"><a class="line" href="namespaceos.html#a0b553259c4b9eaee7c3228502fa2406b"> 64</a></span> <span class="keyword">inline</span> <a class="code" href="classTry.html">Try<ProcessTree></a> <a class="code" href="namespaceos.html#ac324ef4f356d10686ce7024257251443">pstree</a>(<a class="code" href="classOption.html">Option<pid_t></a> pid = <a class="code" href="structNone.html">None</a>())</div><div class="line"><a name="l00065"><
/a><span class="lineno"> 65</span> {</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">if</span> (pid.isNone()) {</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  pid = 1;</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (pid.get() == 0) {</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  pid = getpid();</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>  <span class="keyword">const</span> <a class="code" href="classTry.html">Try<std::list<Process></a>> <a class="code" href="namespaceos.html#aa98ca8ac255e2b9c689979a1b400
84d3">processes</a> = <a class="code" href="namespaceos.html#aa98ca8ac255e2b9c689979a1b40084d3">os::processes</a>();</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>  <span class="keywordflow">if</span> (processes.<a class="code" href="classTry.html#a0b98f95163b8a38daafd1651b043a276">isError</a>()) {</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(processes.<a class="code" href="classTry.html#aec4a11ddd3c036e889d90b7eb6258ba7">error</a>());</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  }</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">return</span> <a class=
"code" href="namespaceos.html#ac324ef4f356d10686ce7024257251443">pstree</a>(pid.get(), processes.<a class="code" href="classTry.html#a8bc7f43e75a47111ea18e9c83b007be5">get</a>());</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> </div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment">// Returns the minimum list of process trees that include all of the</span></div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment">// specified pids using the specified list of processes.</span></div><div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="namespaceos.html#ae610a9542f877147b89a2a6b7745c80f"> 84</a></span> <span class="keyword">inline</span> <a class="code" h
ref="classTry.html">Try<std::list<ProcessTree></a>> <a class="code" href="namespaceos.html#ae610a9542f877147b89a2a6b7745c80f">pstrees</a>(</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keyword">const</span> std::set<pid_t>& <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>,</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keyword">const</span> std::list<Process>& <a class="code" href="namespaceos.html#aa98ca8ac255e2b9c689979a1b40084d3">processes</a>)</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>  std::list<ProcessTree> trees;</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> 
; <span class="keywordflow">foreach</span> (<a class="code" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html#ab03ced250ed239bc3b50b669493997f9">pid_t</a> pid, pids) {</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="comment">// First, check if the pid is already connected to one of the</span></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="comment">// process trees we've constructed.</span></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordtype">bool</span> disconnected = <span class="keyword">true</span>;</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">foreach</span> (<span class="keyword">const</span> <a class="code" href="classos_1_1ProcessTree.html">ProcessTree</a>& tree, trees) {</div><div class="line"><a name="l00095"></a><span class="line
no"> 95</span>  <span class="keywordflow">if</span> (tree.<a class="code" href="classos_1_1ProcessTree.html#aba099c3841f5501ad764e9c115b7a852">contains</a>(pid)) {</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  disconnected = <span class="keyword">false</span>;</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  }</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  }</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">if</span> (disconnected) {</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <a class="code" href="classTry.html">Try<ProcessTree
></a> tree = <a class="code" href="namespaceos.html#ac324ef4f356d10686ce7024257251443">pstree</a>(pid, processes);</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">if</span> (tree.<a class="code" href="classTry.html#a0b98f95163b8a38daafd1651b043a276">isError</a>()) {</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(tree.<a class="code" href="classTry.html#aec4a11ddd3c036e889d90b7eb6258ba7">error</a>());</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  }</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="comment">// Now see if any of the existing process trees are actually</span></div><div class="line"><a name="l001
08"></a><span class="lineno"> 108</span>  <span class="comment">// contained within the process tree we just created and only</span></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="comment">// include the disjoint process trees.</span></div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="comment">// C++11:</span></div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="comment">// trees = trees.filter([](const ProcessTree& t) {</span></div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="comment">// return tree.get().contains(t);</span></div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="comment">// });</span></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  std::list<ProcessTree>
; trees_ = trees;</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  trees.clear();</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">foreach</span> (<span class="keyword">const</span> <a class="code" href="classos_1_1ProcessTree.html">ProcessTree</a>& t, trees_) {</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordflow">if</span> (tree-><a class="code" href="classos_1_1ProcessTree.html#aba099c3841f5501ad764e9c115b7a852">contains</a>(t.<a class="code" href="classos_1_1ProcessTree.html#a866cebd58c7873e1892ce34ebde52bd4">process</a>.<a class="code" href="structos_1_1Process.html#a8c68e0a8c8693f2acacf0f428ea0a493">pid</a>)) {</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00119"></a><span class="lin
eno"> 119</span>  }</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  trees.push_back(t);</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>  trees.push_back(tree.<a class="code" href="classTry.html#a8bc7f43e75a47111ea18e9c83b007be5">get</a>());</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  }</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  }</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">return</span> trees;</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span> }</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> </div><di
v class="line"><a name="l00129"></a><span class="lineno"> 129</span> } <span class="comment">// namespace os {</span></div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="preprocessor">#endif // __STOUT_OS_PSTREE_HPP__</span></div><div class="ttc" id="classError_html"><div class="ttname"><a href="classError.html">Error</a></div><div class="ttdef"><b>Definition:</b> errorbase.hpp:35</div></div>
+<a href="pstree_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_PSTREE_HPP__</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#define __STOUT_OS_PSTREE_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 <list></span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <set></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 <<a class="code" href="error_8hpp.html">stout/error.hpp</a>></span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> 
;<span class="preprocessor">#include <<a class="code" href="foreach_8hpp.html">stout/foreach.hpp</a>></span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <<a class="code" href="none_8hpp.html">stout/none.hpp</a>></span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <<a class="code" href="option_8hpp.html">stout/option.hpp</a>></span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <<a class="code" href="stringify_8hpp.html">stout/stringify.hpp</a>></span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <<a class="code" href="try_8hpp.html">stout/try.hpp</a>></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="preprocessor">#include <<a class="code" href="stout_2include_2stout_2os_2process_8hpp.html">stout/os/process.hpp</a>></span></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> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">namespace </span><a class="code" href="namespaceos.html">os</a> {</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment">// Forward declaration.</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="keyword">inline</span> <a class="code" href="classTry.html">Try<std::list<Process></a>> <a class="code" href="namespaceos.htm
l#aa98ca8ac255e2b9c689979a1b40084d3">processes</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> </div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment">// Returns a process tree rooted at the specified pid using the</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">// specified list of processes (or an error if one occurs).</span></div><div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="namespaceos.html#ac324ef4f356d10686ce7024257251443"> 37</a></span> <span class="keyword">inline</span> <a class="code" href="classTry.html">Try<ProcessTree></a> <a class="code" href="namespaceos.html#ac324ef4f356d10686ce7024257251443">pstree</a>(</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>
60; <a class="code" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html#ab03ced250ed239bc3b50b669493997f9">pid_t</a> pid,</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keyword">const</span> std::list<Process>& <a class="code" href="namespaceos.html#aa98ca8ac255e2b9c689979a1b40084d3">processes</a>)</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> {</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  std::list<ProcessTree> <a class="code" href="namespaceos.html#a363f959e94e301ec8ec483e3c22258a6">children</a>;</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">foreach</span> (<span class="keyword">const</span> <a class="code" href="structos_1_1Process.html">Process</a>& <a class="code" href="namespaceprocess.html">process</a>, processes) {</div><div class="line"><a name="l00043"><
/a><span class="lineno"> 43</span>  <span class="keywordflow">if</span> (process.<a class="code" href="structos_1_1Process.html#a3865855abd794165fef4465bb3c7eb54">parent</a> == pid) {</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <a class="code" href="classTry.html">Try<ProcessTree></a> tree = <a class="code" href="namespaceos.html#ac324ef4f356d10686ce7024257251443">pstree</a>(process.<a class="code" href="structos_1_1Process.html#a8c68e0a8c8693f2acacf0f428ea0a493">pid</a>, processes);</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">if</span> (tree.<a class="code" href="classTry.html#a0b98f95163b8a38daafd1651b043a276">isError</a>()) {</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(tree.<a class="code" href="classTry.html#aec4a11
ddd3c036e889d90b7eb6258ba7">error</a>());</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  }</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  children.push_back(tree.<a class="code" href="classTry.html#a8bc7f43e75a47111ea18e9c83b007be5">get</a>());</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> </div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">foreach</span> (<span class="keyword">const</span> <a class="code" href="structos_1_1Process.html">Process</a>& process, processes) {</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordflow">if</span> (process.<a class="code" href="struc
tos_1_1Process.html#a8c68e0a8c8693f2acacf0f428ea0a493">pid</a> == pid) {</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">return</span> <a class="code" href="classos_1_1ProcessTree.html">ProcessTree</a>(process, children);</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  }</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> </div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(<span class="stringliteral">"No process found at "</span> + <a class="code" href="namespacens.html#a28116b46e6543597a11733424cd1aa20">stringify</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> </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="comment">// Returns a process tree for the specified pid (or all processes if</span></div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment">// pid is none or the current process if pid is 0).</span></div><div class="line"><a name="l00064"></a><span class="lineno"><a class="line" href="namespaceos.html#a0b553259c4b9eaee7c3228502fa2406b"> 64</a></span> <span class="keyword">inline</span> <a class="code" href="classTry.html">Try<ProcessTree></a> <a class="code" href="namespaceos.html#ac324ef4f356d10686ce7024257251443">pstree</a>(<a class="code" href="classOption.html">Option<pid_t></a> pid = <a class="code" href="structNone.html">None</a>())</div><div class="line"><a name="l00065"><
/a><span class="lineno"> 65</span> {</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">if</span> (pid.isNone()) {</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  pid = 1;</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (pid.get() == 0) {</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  pid = getpid();</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>  <span class="keyword">const</span> <a class="code" href="classTry.html">Try<std::list<Process></a>> <a class="code" href="namespaceos.html#aa98ca8ac255e2b9c689979a1b400
84d3">processes</a> = <a class="code" href="namespaceos.html#aa98ca8ac255e2b9c689979a1b40084d3">os::processes</a>();</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>  <span class="keywordflow">if</span> (processes.<a class="code" href="classTry.html#a0b98f95163b8a38daafd1651b043a276">isError</a>()) {</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(processes.<a class="code" href="classTry.html#aec4a11ddd3c036e889d90b7eb6258ba7">error</a>());</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  }</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">return</span> <a class=
"code" href="namespaceos.html#ac324ef4f356d10686ce7024257251443">pstree</a>(pid.get(), processes.<a class="code" href="classTry.html#a8bc7f43e75a47111ea18e9c83b007be5">get</a>());</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> </div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment">// Returns the minimum list of process trees that include all of the</span></div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment">// specified pids using the specified list of processes.</span></div><div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="namespaceos.html#ae610a9542f877147b89a2a6b7745c80f"> 84</a></span> <span class="keyword">inline</span> <a class="code" h
ref="classTry.html">Try<std::list<ProcessTree></a>> <a class="code" href="namespaceos.html#ae610a9542f877147b89a2a6b7745c80f">pstrees</a>(</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keyword">const</span> std::set<pid_t>& <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>,</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keyword">const</span> std::list<Process>& <a class="code" href="namespaceos.html#aa98ca8ac255e2b9c689979a1b40084d3">processes</a>)</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>  std::list<ProcessTree> trees;</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> 
; <span class="keywordflow">foreach</span> (<a class="code" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html#ab03ced250ed239bc3b50b669493997f9">pid_t</a> pid, pids) {</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="comment">// First, check if the pid is already connected to one of the</span></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="comment">// process trees we've constructed.</span></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordtype">bool</span> disconnected = <span class="keyword">true</span>;</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">foreach</span> (<span class="keyword">const</span> <a class="code" href="classos_1_1ProcessTree.html">ProcessTree</a>& tree, trees) {</div><div class="line"><a name="l00095"></a><span class="line
no"> 95</span>  <span class="keywordflow">if</span> (tree.<a class="code" href="classos_1_1ProcessTree.html#aba099c3841f5501ad764e9c115b7a852">contains</a>(pid)) {</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  disconnected = <span class="keyword">false</span>;</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  }</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  }</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">if</span> (disconnected) {</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <a class="code" href="classTry.html">Try<ProcessTree
></a> tree = <a class="code" href="namespaceos.html#ac324ef4f356d10686ce7024257251443">pstree</a>(pid, processes);</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">if</span> (tree.<a class="code" href="classTry.html#a0b98f95163b8a38daafd1651b043a276">isError</a>()) {</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(tree.<a class="code" href="classTry.html#aec4a11ddd3c036e889d90b7eb6258ba7">error</a>());</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  }</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="comment">// Now see if any of the existing process trees are actually</span></div><div class="line"><a name="l001
08"></a><span class="lineno"> 108</span>  <span class="comment">// contained within the process tree we just created and only</span></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="comment">// include the disjoint process trees.</span></div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="comment">// C++11:</span></div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="comment">// trees = trees.filter([](const ProcessTree& t) {</span></div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="comment">// return tree.get().contains(t);</span></div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="comment">// });</span></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  std::list<ProcessTree>
; trees_ = trees;</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  trees.clear();</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">foreach</span> (<span class="keyword">const</span> <a class="code" href="classos_1_1ProcessTree.html">ProcessTree</a>& t, trees_) {</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordflow">if</span> (tree-><a class="code" href="classos_1_1ProcessTree.html#aba099c3841f5501ad764e9c115b7a852">contains</a>(t.<a class="code" href="classos_1_1ProcessTree.html#a866cebd58c7873e1892ce34ebde52bd4">process</a>.<a class="code" href="structos_1_1Process.html#a8c68e0a8c8693f2acacf0f428ea0a493">pid</a>)) {</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00119"></a><span class="lin
eno"> 119</span>  }</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  trees.push_back(t);</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>  trees.push_back(tree.<a class="code" href="classTry.html#a8bc7f43e75a47111ea18e9c83b007be5">get</a>());</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  }</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  }</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">return</span> trees;</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span> }</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> </div><di
v class="line"><a name="l00129"></a><span class="lineno"> 129</span> } <span class="comment">// namespace os {</span></div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="preprocessor">#endif // __STOUT_OS_PSTREE_HPP__</span></div><div class="ttc" id="classError_html"><div class="ttname"><a href="classError.html">Error</a></div><div class="ttdef"><b>Definition:</b> errorbase.hpp:36</div></div>
<div class="ttc" id="classOption_html"><div class="ttname"><a href="classOption.html">Option< pid_t ></a></div></div>
<div class="ttc" id="classTry_html_a8bc7f43e75a47111ea18e9c83b007be5"><div class="ttname"><a href="classTry.html#a8bc7f43e75a47111ea18e9c83b007be5">Try::get</a></div><div class="ttdeci">T & get()&</div><div class="ttdef"><b>Definition:</b> try.hpp:73</div></div>
<div class="ttc" id="classTry_html"><div class="ttname"><a href="classTry.html">Try</a></div><div class="ttdef"><b>Definition:</b> check.hpp:33</div></div>