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<li class="navelem"><a class="el" href="dir_df9c78dcf3f59a33b12284f95992a64b.html">ripple</a></li><li class="navelem"><a class="el" href="dir_5f536ab1985a8dcd28bcfd618bc58e92.html">basics</a></li><li class="navelem"><a class="el" href="dir_6f921693cf6aba7edd915fbfc33f741e.html">impl</a></li> </ul>
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<div class="title">CountedObject.cpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">//------------------------------------------------------------------------------</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">/*</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> This file is part of rippled: https://github.com/ripple/rippled</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> Copyright (c) 2012, 2013 Ripple Labs Inc.</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"></span> </div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> Permission to use, copy, modify, and/or distribute this software for any</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> purpose with or without fee is hereby granted, provided that the above</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> copyright notice and this permission notice appear in all copies.</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"></span> </div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">*/</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">//==============================================================================</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  </div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <ripple/basics/CountedObject.h></span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/algorithm.html">algorithm</a>></span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/type_traits.html">type_traits</a>></span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  </div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">namespace </span><a class="code" href="namespaceripple.html">ripple</a> {</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  </div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> CountedObjects&</div>
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<div class="line"><a name="l00027"></a><span class="lineno"><a class="line" href="classripple_1_1CountedObjects.html#a5e1e7b7931d2626df762785f7d24838c"> 27</a></span> <a class="code" href="classripple_1_1CountedObjects.html#a5e1e7b7931d2626df762785f7d24838c">CountedObjects::getInstance</a>() noexcept</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> {</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="keyword">static</span> <a class="code" href="classripple_1_1CountedObjects.html">CountedObjects</a> instance;</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  </div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keywordflow">return</span> instance;</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> }</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  </div>
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<div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="classripple_1_1CountedObjects.html#a779ff8ca02a37d8179630a13872aace9"> 34</a></span> <a class="code" href="classripple_1_1CountedObjects.html#a779ff8ca02a37d8179630a13872aace9">CountedObjects::CountedObjects</a>() noexcept : m_count(0), m_head(<span class="keywordtype">nullptr</span>)</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> {</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> }</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  </div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/container/vector.html">CountedObjects::List</a></div>
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<div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="classripple_1_1CountedObjects.html#a8f9e97d7ecc290702f3c39240c622f4e"> 39</a></span> <a class="code" href="classripple_1_1CountedObjects.html#a8f9e97d7ecc290702f3c39240c622f4e">CountedObjects::getCounts</a>(<span class="keywordtype">int</span> minimumThreshold)<span class="keyword"> const</span></div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword"></span>{</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/container/vector.html">List</a> counts;</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  </div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="comment">// When other operations are concurrent, the count</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="comment">// might be temporarily less than the actual count.</span></div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  counts.<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/vector/reserve.html">reserve</a>(<a class="code" href="classripple_1_1CountedObjects.html#a5c3ab28dd19d17e2604950bf4f2c2799">m_count</a>.<a class="codeRef" href="http://en.cppreference.com/w/cpp/atomic/atomic/load.html">load</a>());</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  </div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span>* ctr = <a class="code" href="classripple_1_1CountedObjects.html#a24507136e67f38befc76c65d531c3ec6">m_head</a>.load(); ctr != <span class="keyword">nullptr</span>; ctr = ctr->getNext())</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  {</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">if</span> (ctr->getCount() >= minimumThreshold)</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  counts.<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/vector/emplace_back.html">emplace_back</a>(ctr->getName(), ctr->getCount());</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  }</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  </div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/algorithm/sort.html">std::sort</a>(counts.<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/vector/begin.html">begin</a>(), counts.<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/vector/end.html">end</a>());</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  </div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">return</span> counts;</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> }</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  </div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> } <span class="comment">// namespace ripple</span></div>
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<div class="ttc" id="aclassripple_1_1CountedObjects_html_a24507136e67f38befc76c65d531c3ec6"><div class="ttname"><a href="classripple_1_1CountedObjects.html#a24507136e67f38befc76c65d531c3ec6">ripple::CountedObjects::m_head</a></div><div class="ttdeci">std::atomic< Counter * > m_head</div><div class="ttdef"><b>Definition:</b> <a href="CountedObject_8h_source.html#l00111">CountedObject.h:111</a></div></div>
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<div class="ttc" id="asort_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/algorithm/sort.html">std::sort</a></div><div class="ttdeci">T sort(T... args)</div></div>
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<div class="ttc" id="aload_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/atomic/atomic/load.html">std::atomic::load</a></div><div class="ttdeci">T load(T... args)</div></div>
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<div class="ttc" id="aclassripple_1_1CountedObjects_html"><div class="ttname"><a href="classripple_1_1CountedObjects.html">ripple::CountedObjects</a></div><div class="ttdoc">Manages all counted object types.</div><div class="ttdef"><b>Definition:</b> <a href="CountedObject_8h_source.html#l00032">CountedObject.h:32</a></div></div>
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<div class="ttc" id="aemplace_back_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/vector/emplace_back.html">std::vector::emplace_back</a></div><div class="ttdeci">T emplace_back(T... args)</div></div>
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<div class="ttc" id="anamespaceripple_html"><div class="ttname"><a href="namespaceripple.html">ripple</a></div><div class="ttdoc">Use hash_* containers for keys that do not need a cryptographically secure hashing algorithm.</div><div class="ttdef"><b>Definition:</b> <a href="RCLCensorshipDetector_8h_source.html#l00029">RCLCensorshipDetector.h:29</a></div></div>
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<div class="ttc" id="abegin_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/vector/begin.html">std::vector::begin</a></div><div class="ttdeci">T begin(T... args)</div></div>
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<div class="ttc" id="aend_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/vector/end.html">std::vector::end</a></div><div class="ttdeci">T end(T... args)</div></div>
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