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<a href="CleanerThread_8cc.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">/*---------------------------------------------------------------------\</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">| ____ _ __ __ ___ |</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">| |__ / \ / / . \ . \ |</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">| / / \ V /| _/ _/ |</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">| / /__ | | | | | | |</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">| |</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">\---------------------------------------------------------------------*/</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "<a class="code" href="CleanerThread__p_8h.html">zypp/base/CleanerThread_p.h</a>"</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <algorithm></span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <thread></span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include <mutex></span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <condition_variable></span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <chrono></span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include <vector></span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include <sys/types.h></span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <sys/wait.h></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"><a class="line" href="structCleanerData.html"> 22</a></span> <span class="keyword">struct </span><a class="code" href="structCleanerData.html">CleanerData</a></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> {</div><div class="line"><a name="l00024"></a><span class="lineno"><a class="line" href="structCleanerData.html#a514a5e56b308a85687fd8a05973febbb"> 24</a></span>  <span class="keyword">static</span> <a class="code" href="structCleanerData.html">CleanerData</a> &<a class="code" href="structCleanerData.html#a514a5e56b308a85687fd8a05973febbb">instance</a> ()</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="comment">// C++11 requires that this is thread safe "magic statics"</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="comment">// this is a intentional leak and will live until the application exits</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keyword">static</span> <a class="code" href="structCleanerData.html">CleanerData</a> *data( <span class="keyword">new</span> <a class="code" href="structCleanerData.html">CleanerData</a> );</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="keywordflow">return</span> *data;</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> </div><div class="line"><a name="l00032"></a><span class="lineno"><a class="line" href="structCleanerData.html#abe1268f757c28e587204e3643de0fd16"> 32</a></span>  <a class="code" href="structCleanerData.html#abe1268f757c28e587204e3643de0fd16">CleanerData</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>  std::thread t ( [&](){</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  this-><a class="code" href="structCleanerData.html#a86172b12322c676330bfff4bece65497">run</a>();</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  } );</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  t.detach(); <span class="comment">//we will control the thread otherwise</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  }</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div><div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="structCleanerData.html#a86172b12322c676330bfff4bece65497"> 40</a></span>  <span class="keywordtype">void</span> <a class="code" href="structCleanerData.html#a86172b12322c676330bfff4bece65497">run</a> ()</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>  std::unique_lock<std::mutex> lk( <a class="code" href="structCleanerData.html#ac80634fe9328f717efd868f7eb6de8af">_m</a> );</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">while</span> ( <span class="keyword">true</span> )</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  {</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keyword">auto</span> filter = []( pid_t pid ){</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordtype">int</span> status = 0;</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordtype">int</span> res = waitpid( pid, &status, WNOHANG );</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="comment">// we either got an error, or the child has exited, remove it from list</span></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordtype">bool</span> removeMe = ( res == -1 || res == pid );</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">return</span> removeMe;</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>  <a class="code" href="structCleanerData.html#a6f1b1a21bbce8ec06719e7483e020080">_watchedPIDs</a>.erase( <a class="code" href="namespacezypp.html#a5e4fbf9007f6727d3461ec600a01c8ac">std::remove_if</a>( <a class="code" href="structCleanerData.html#a6f1b1a21bbce8ec06719e7483e020080">_watchedPIDs</a>.begin(), <a class="code" href="structCleanerData.html#a6f1b1a21bbce8ec06719e7483e020080">_watchedPIDs</a>.end(), filter ), <a class="code" href="structCleanerData.html#a6f1b1a21bbce8ec06719e7483e020080">_watchedPIDs</a>.end() );</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="keywordflow">if</span> ( <a class="code" href="structCleanerData.html#a6f1b1a21bbce8ec06719e7483e020080">_watchedPIDs</a>.size() )</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <a class="code" href="structCleanerData.html#a636ca250c2925a888f6cba139bab311c">_cv</a>.wait_for( lk, std::chrono::milliseconds(100) );</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <a class="code" href="structCleanerData.html#a636ca250c2925a888f6cba139bab311c">_cv</a>.wait( lk );</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"><a class="line" href="structCleanerData.html#ac80634fe9328f717efd868f7eb6de8af"> 62</a></span>  std::mutex <a class="code" href="structCleanerData.html#ac80634fe9328f717efd868f7eb6de8af">_m</a>; <span class="comment">// < locks all data in CleanerData, do not access it without owning the mutex</span></div><div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="structCleanerData.html#a636ca250c2925a888f6cba139bab311c"> 63</a></span>  std::condition_variable <a class="code" href="structCleanerData.html#a636ca250c2925a888f6cba139bab311c">_cv</a>;</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div><div class="line"><a name="l00065"></a><span class="lineno"><a class="line" href="structCleanerData.html#a6f1b1a21bbce8ec06719e7483e020080"> 65</a></span>  std::vector<pid_t> <a class="code" href="structCleanerData.html#a6f1b1a21bbce8ec06719e7483e020080">_watchedPIDs</a>;</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span> };</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"><a class="line" href="classzypp_1_1CleanerThread.html#abde9e01f3142499f21f03b7bd35af93d"> 69</a></span> <span class="keywordtype">void</span> <a class="code" href="classzypp_1_1CleanerThread.html#abde9e01f3142499f21f03b7bd35af93d">zypp::CleanerThread::watchPID</a>( pid_t pid_r )</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>  <a class="code" href="structCleanerData.html">CleanerData</a> &data = <a class="code" href="structCleanerData.html#a514a5e56b308a85687fd8a05973febbb">CleanerData::instance</a>();</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>  std::lock_guard<std::mutex> guard( data.<a class="code" href="structCleanerData.html#ac80634fe9328f717efd868f7eb6de8af">_m</a> );</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  data.<a class="code" href="structCleanerData.html#a6f1b1a21bbce8ec06719e7483e020080">_watchedPIDs</a>.push_back( pid_r );</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  }</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="comment">//wake the thread up</span></div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  data.<a class="code" href="structCleanerData.html#a636ca250c2925a888f6cba139bab311c">_cv</a>.notify_one();</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span> }</div><div class="ttc" id="structCleanerData_html_a86172b12322c676330bfff4bece65497"><div class="ttname"><a href="structCleanerData.html#a86172b12322c676330bfff4bece65497">CleanerData::run</a></div><div class="ttdeci">void run()</div><div class="ttdef"><b>Definition:</b> <a href="CleanerThread_8cc_source.html#l00040">CleanerThread.cc:40</a></div></div>
<div class="ttc" id="structCleanerData_html_ac80634fe9328f717efd868f7eb6de8af"><div class="ttname"><a href="structCleanerData.html#ac80634fe9328f717efd868f7eb6de8af">CleanerData::_m</a></div><div class="ttdeci">std::mutex _m</div><div class="ttdef"><b>Definition:</b> <a href="CleanerThread_8cc_source.html#l00062">CleanerThread.cc:62</a></div></div>
<div class="ttc" id="classzypp_1_1CleanerThread_html_abde9e01f3142499f21f03b7bd35af93d"><div class="ttname"><a href="classzypp_1_1CleanerThread.html#abde9e01f3142499f21f03b7bd35af93d">zypp::CleanerThread::watchPID</a></div><div class="ttdeci">static void watchPID(pid_t pid_r)</div><div class="ttdef"><b>Definition:</b> <a href="CleanerThread_8cc_source.html#l00069">CleanerThread.cc:69</a></div></div>
<div class="ttc" id="structCleanerData_html_a514a5e56b308a85687fd8a05973febbb"><div class="ttname"><a href="structCleanerData.html#a514a5e56b308a85687fd8a05973febbb">CleanerData::instance</a></div><div class="ttdeci">static CleanerData & instance()</div><div class="ttdef"><b>Definition:</b> <a href="CleanerThread_8cc_source.html#l00024">CleanerThread.cc:24</a></div></div>
<div class="ttc" id="structCleanerData_html_a636ca250c2925a888f6cba139bab311c"><div class="ttname"><a href="structCleanerData.html#a636ca250c2925a888f6cba139bab311c">CleanerData::_cv</a></div><div class="ttdeci">std::condition_variable _cv</div><div class="ttdef"><b>Definition:</b> <a href="CleanerThread_8cc_source.html#l00063">CleanerThread.cc:63</a></div></div>
<div class="ttc" id="structCleanerData_html_a6f1b1a21bbce8ec06719e7483e020080"><div class="ttname"><a href="structCleanerData.html#a6f1b1a21bbce8ec06719e7483e020080">CleanerData::_watchedPIDs</a></div><div class="ttdeci">std::vector< pid_t > _watchedPIDs</div><div class="ttdef"><b>Definition:</b> <a href="CleanerThread_8cc_source.html#l00065">CleanerThread.cc:65</a></div></div>
<div class="ttc" id="structCleanerData_html_abe1268f757c28e587204e3643de0fd16"><div class="ttname"><a href="structCleanerData.html#abe1268f757c28e587204e3643de0fd16">CleanerData::CleanerData</a></div><div class="ttdeci">CleanerData()</div><div class="ttdef"><b>Definition:</b> <a href="CleanerThread_8cc_source.html#l00032">CleanerThread.cc:32</a></div></div>
<div class="ttc" id="namespacezypp_html_a5e4fbf9007f6727d3461ec600a01c8ac"><div class="ttname"><a href="namespacezypp.html#a5e4fbf9007f6727d3461ec600a01c8ac">zypp::remove_if</a></div><div class="ttdeci">void remove_if(LockSet &lockset_r, TPredicate pred_r)</div><div class="ttdef"><b>Definition:</b> <a href="Locks_8cc_source.html#l00046">Locks.cc:46</a></div></div>
<div class="ttc" id="CleanerThread__p_8h_html"><div class="ttname"><a href="CleanerThread__p_8h.html">CleanerThread_p.h</a></div><div class="ttdoc">This file contains private API, it will change without notice.</div></div>
<div class="ttc" id="structCleanerData_html"><div class="ttname"><a href="structCleanerData.html">CleanerData</a></div><div class="ttdef"><b>Definition:</b> <a href="CleanerThread_8cc_source.html#l00022">CleanerThread.cc:22</a></div></div>
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