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| <div class="title">process_reference.hpp</div> </div> |
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| <a href="process__reference_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 __PROCESS_REFERENCE_HPP__</span></div> |
| <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor"></span><span class="preprocessor">#define __PROCESS_REFERENCE_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 <<a class="code" href="libprocess_2include_2process_2process_8hpp.html">process/process.hpp</a>></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="keyword">namespace </span><a class="code" href="namespaceos.html#ae19e4161a51b86a1f330f3bf1dc75389">process</a> {</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="comment">// Provides reference counting semantics for a process pointer.</span></div> |
| <div class="line"><a name="l00021"></a><span class="lineno"><a class="line" href="classprocess_1_1ProcessReference.html"> 21</a></span> <span class="keyword">class </span><a class="code" href="classprocess_1_1ProcessReference.html">ProcessReference</a></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">public</span>:</div> |
| <div class="line"><a name="l00024"></a><span class="lineno"><a class="line" href="classprocess_1_1ProcessReference.html#a17fba74dbc68ffb7aca4b0b4d04531ff"> 24</a></span>  <a class="code" href="classprocess_1_1ProcessReference.html#a17fba74dbc68ffb7aca4b0b4d04531ff">ProcessReference</a>() : process(nullptr) {}</div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div> |
| <div class="line"><a name="l00026"></a><span class="lineno"><a class="line" href="classprocess_1_1ProcessReference.html#a98984b83dcbe3ff6d4b9abf3c5d3a5ad"> 26</a></span>  <a class="code" href="classprocess_1_1ProcessReference.html#a98984b83dcbe3ff6d4b9abf3c5d3a5ad">~ProcessReference</a>()</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>  cleanup();</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> </div> |
| <div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="classprocess_1_1ProcessReference.html#a9643b9ab539969b547510cdc5fdd688a"> 31</a></span>  <a class="code" href="classprocess_1_1ProcessReference.html#a9643b9ab539969b547510cdc5fdd688a">ProcessReference</a>(<span class="keyword">const</span> <a class="code" href="classprocess_1_1ProcessReference.html">ProcessReference</a>& that)</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>  copy(that);</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> </div> |
| <div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="classprocess_1_1ProcessReference.html#a5319dfdfca31ef4b93837cbb6928c391"> 36</a></span>  <a class="code" href="classprocess_1_1ProcessReference.html">ProcessReference</a>& <a class="code" href="classprocess_1_1ProcessReference.html#a5319dfdfca31ef4b93837cbb6928c391">operator=</a>(<span class="keyword">const</span> <a class="code" href="classprocess_1_1ProcessReference.html">ProcessReference</a>& that)</div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  {</div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordflow">if</span> (<span class="keyword">this</span> != &that) {</div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  cleanup();</div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  copy(that);</div> |
| <div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  }</div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</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> </div> |
| <div class="line"><a name="l00045"></a><span class="lineno"><a class="line" href="classprocess_1_1ProcessReference.html#afe6b9c2c47f6fae01f9217e9835537ae"> 45</a></span>  <a class="code" href="classprocess_1_1ProcessBase.html">ProcessBase</a>* <a class="code" href="classprocess_1_1ProcessReference.html#afe6b9c2c47f6fae01f9217e9835537ae">operator-></a>()<span class="keyword"> const</span></div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="keyword"> </span>{</div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">return</span> process;</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"><a class="line" href="classprocess_1_1ProcessReference.html#a481b9c25e0209530c60ab5ebdadb075f"> 50</a></span>  <span class="keyword">operator</span> <a class="code" href="classprocess_1_1ProcessBase.html">ProcessBase</a>*() <span class="keyword">const</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">return</span> process;</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"><a class="line" href="classprocess_1_1ProcessReference.html#a6f4785c71a30651f6ad2092ec07a40a8"> 55</a></span>  <span class="keyword">operator</span> bool()<span class="keyword"> const</span></div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="keyword"> </span>{</div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">return</span> process != <span class="keyword">nullptr</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> </div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="keyword">private</span>:</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"><a class="line" href="classprocess_1_1ProcessReference.html#ae1701c7594fe2cf1c96b951a52eb0396"> 61</a></span>  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="classprocess_1_1ProcessReference.html#ae1701c7594fe2cf1c96b951a52eb0396">ProcessManager</a>; <span class="comment">// For ProcessManager::use.</span></div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keyword">explicit</span> <a class="code" href="classprocess_1_1ProcessReference.html#a17fba74dbc68ffb7aca4b0b4d04531ff">ProcessReference</a>(<a class="code" href="classprocess_1_1ProcessBase.html">ProcessBase</a>* _process)</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  : <a class="code" href="namespaceos.html#ae19e4161a51b86a1f330f3bf1dc75389">process</a>(_process)</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> (<a class="code" href="namespaceos.html#ae19e4161a51b86a1f330f3bf1dc75389">process</a> != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <a class="code" href="namespaceos.html#ae19e4161a51b86a1f330f3bf1dc75389">process</a>->refs.fetch_add(1);</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>  }</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>  <span class="keywordtype">void</span> <a class="code" href="namespaceutils.html#ac8be4e5e1fedfabe178ca20b6a37349c">copy</a>(<span class="keyword">const</span> <a class="code" href="classprocess_1_1ProcessReference.html#a17fba74dbc68ffb7aca4b0b4d04531ff">ProcessReference</a>& that)</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>  <a class="code" href="namespaceos.html#ae19e4161a51b86a1f330f3bf1dc75389">process</a> = that.process;</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="keywordflow">if</span> (<a class="code" href="namespaceos.html#ae19e4161a51b86a1f330f3bf1dc75389">process</a> != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="comment">// There should be at least one reference to the process, so</span></div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="comment">// we don't need to worry about checking if it's exiting or</span></div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="comment">// not, since we know we can always create another reference.</span></div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  CHECK(<a class="code" href="namespaceos.html#ae19e4161a51b86a1f330f3bf1dc75389">process</a>->refs.load() > 0);</div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <a class="code" href="namespaceos.html#ae19e4161a51b86a1f330f3bf1dc75389">process</a>->refs.fetch_add(1);</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>  }</div> |
| <div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div> |
| <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordtype">void</span> <a class="code" href="namespacecgroups.html#a12d210f286e5fcf7993c0c90b9459606">cleanup</a>()</div> |
| <div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  {</div> |
| <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">if</span> (<a class="code" href="namespaceos.html#ae19e4161a51b86a1f330f3bf1dc75389">process</a> != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <a class="code" href="namespaceos.html#ae19e4161a51b86a1f330f3bf1dc75389">process</a>->refs.fetch_sub(1);</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>  }</div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div> |
| <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  ProcessBase* <a class="code" href="namespaceos.html#ae19e4161a51b86a1f330f3bf1dc75389">process</a>;</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> </div> |
| <div class="line"><a name="l00094"></a><span class="lineno"> 94</span> } <span class="comment">// namespace process {</span></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> <span class="preprocessor">#endif // __PROCESS_REFERENCE_HPP__</span></div> |
| <div class="ttc" id="classprocess_1_1ProcessReference_html_afe6b9c2c47f6fae01f9217e9835537ae"><div class="ttname"><a href="classprocess_1_1ProcessReference.html#afe6b9c2c47f6fae01f9217e9835537ae">process::ProcessReference::operator-></a></div><div class="ttdeci">ProcessBase * operator->() const </div><div class="ttdef"><b>Definition:</b> process_reference.hpp:45</div></div> |
| <div class="ttc" id="namespacecgroups_html_a12d210f286e5fcf7993c0c90b9459606"><div class="ttname"><a href="namespacecgroups.html#a12d210f286e5fcf7993c0c90b9459606">cgroups::cleanup</a></div><div class="ttdeci">process::Future< bool > cleanup(const std::string &hierarchy)</div></div> |
| <div class="ttc" id="classprocess_1_1ProcessReference_html_ae1701c7594fe2cf1c96b951a52eb0396"><div class="ttname"><a href="classprocess_1_1ProcessReference.html#ae1701c7594fe2cf1c96b951a52eb0396">process::ProcessReference::ProcessManager</a></div><div class="ttdeci">friend class ProcessManager</div><div class="ttdef"><b>Definition:</b> process_reference.hpp:61</div></div> |
| <div class="ttc" id="classprocess_1_1ProcessBase_html"><div class="ttname"><a href="classprocess_1_1ProcessBase.html">process::ProcessBase</a></div><div class="ttdef"><b>Definition:</b> process.hpp:68</div></div> |
| <div class="ttc" id="classprocess_1_1ProcessReference_html_a98984b83dcbe3ff6d4b9abf3c5d3a5ad"><div class="ttname"><a href="classprocess_1_1ProcessReference.html#a98984b83dcbe3ff6d4b9abf3c5d3a5ad">process::ProcessReference::~ProcessReference</a></div><div class="ttdeci">~ProcessReference()</div><div class="ttdef"><b>Definition:</b> process_reference.hpp:26</div></div> |
| <div class="ttc" id="classprocess_1_1ProcessReference_html"><div class="ttname"><a href="classprocess_1_1ProcessReference.html">process::ProcessReference</a></div><div class="ttdef"><b>Definition:</b> process_reference.hpp:21</div></div> |
| <div class="ttc" id="classprocess_1_1ProcessReference_html_a5319dfdfca31ef4b93837cbb6928c391"><div class="ttname"><a href="classprocess_1_1ProcessReference.html#a5319dfdfca31ef4b93837cbb6928c391">process::ProcessReference::operator=</a></div><div class="ttdeci">ProcessReference & operator=(const ProcessReference &that)</div><div class="ttdef"><b>Definition:</b> process_reference.hpp:36</div></div> |
| <div class="ttc" id="namespaceos_html_ae19e4161a51b86a1f330f3bf1dc75389"><div class="ttname"><a href="namespaceos.html#ae19e4161a51b86a1f330f3bf1dc75389">os::process</a></div><div class="ttdeci">Result< Process > process(pid_t pid)</div><div class="ttdef"><b>Definition:</b> freebsd.hpp:30</div></div> |
| <div class="ttc" id="classprocess_1_1ProcessReference_html_a17fba74dbc68ffb7aca4b0b4d04531ff"><div class="ttname"><a href="classprocess_1_1ProcessReference.html#a17fba74dbc68ffb7aca4b0b4d04531ff">process::ProcessReference::ProcessReference</a></div><div class="ttdeci">ProcessReference()</div><div class="ttdef"><b>Definition:</b> process_reference.hpp:24</div></div> |
| <div class="ttc" id="classprocess_1_1ProcessReference_html_a9643b9ab539969b547510cdc5fdd688a"><div class="ttname"><a href="classprocess_1_1ProcessReference.html#a9643b9ab539969b547510cdc5fdd688a">process::ProcessReference::ProcessReference</a></div><div class="ttdeci">ProcessReference(const ProcessReference &that)</div><div class="ttdef"><b>Definition:</b> process_reference.hpp:31</div></div> |
| <div class="ttc" id="namespaceutils_html_ac8be4e5e1fedfabe178ca20b6a37349c"><div class="ttname"><a href="namespaceutils.html#ac8be4e5e1fedfabe178ca20b6a37349c">utils::copy</a></div><div class="ttdeci">T copy(const T &t)</div><div class="ttdef"><b>Definition:</b> utils.hpp:21</div></div> |
| <div class="ttc" id="libprocess_2include_2process_2process_8hpp_html"><div class="ttname"><a href="libprocess_2include_2process_2process_8hpp.html">process.hpp</a></div></div> |
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