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| <div class="title">theta_union_base_impl.hpp</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> |
| <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one</span></div> |
| <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * or more contributor license agreements. See the NOTICE file</span></div> |
| <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * distributed with this work for additional information</span></div> |
| <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * regarding copyright ownership. The ASF licenses this file</span></div> |
| <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * to you under the Apache License, Version 2.0 (the</span></div> |
| <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * "License"); you may not use this file except in compliance</span></div> |
| <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * with the License. You may obtain a copy of the License at</span></div> |
| <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></div> |
| <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * Unless required by applicable law or agreed to in writing,</span></div> |
| <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * software distributed under the License is distributed on an</span></div> |
| <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span></div> |
| <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * KIND, either express or implied. See the License for the</span></div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * specific language governing permissions and limitations</span></div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * under the License.</span></div> |
| <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> */</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">#ifndef THETA_UNION_BASE_IMPL_HPP_</span></div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#define THETA_UNION_BASE_IMPL_HPP_</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="preprocessor">#include <algorithm></span></div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <stdexcept></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 "conditional_forward.hpp"</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> <span class="keyword">namespace </span><a class="code" href="namespacedatasketches.html">datasketches</a> {</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="keyword">template</span><<span class="keyword">typename</span> EN, <span class="keyword">typename</span> EK, <span class="keyword">typename</span> P, <span class="keyword">typename</span> S, <span class="keyword">typename</span> CS, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> theta_union_base<EN, EK, P, S, CS, A>::theta_union_base(uint8_t lg_cur_size, uint8_t lg_nom_size, resize_factor rf,</div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keywordtype">float</span> p, uint64_t theta, uint64_t seed, <span class="keyword">const</span> P& policy, <span class="keyword">const</span> A& allocator):</div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> policy_(policy),</div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span> table_(lg_cur_size, lg_nom_size, rf, p, theta, seed, allocator),</div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> union_theta_(table_.theta_)</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>  </div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">template</span><<span class="keyword">typename</span> EN, <span class="keyword">typename</span> EK, <span class="keyword">typename</span> P, <span class="keyword">typename</span> S, <span class="keyword">typename</span> CS, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">template</span><<span class="keyword">typename</span> SS></div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keywordtype">void</span> theta_union_base<EN, EK, P, S, CS, A>::update(SS&& sketch) {</div> |
| <div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordflow">if</span> (sketch.is_empty()) <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">if</span> (sketch.get_seed_hash() != compute_seed_hash(table_.seed_)) <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"seed hash mismatch"</span>);</div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  table_.is_empty_ = <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  union_theta_ = std::min(union_theta_, sketch.get_theta64());</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span>&& entry: sketch) {</div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keyword">const</span> uint64_t hash = EK()(entry);</div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">if</span> (hash < union_theta_ && hash < table_.theta_) {</div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">auto</span> result = table_.find(hash);</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">if</span> (!result.second) {</div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  table_.insert(result.first, conditional_forward<SS>(entry));</div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  policy_(*result.first, conditional_forward<SS>(entry));</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>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">if</span> (sketch.is_ordered()) <span class="keywordflow">break</span>; <span class="comment">// early stop</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>  union_theta_ = std::min(union_theta_, table_.theta_);</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> <span class="keyword">template</span><<span class="keyword">typename</span> EN, <span class="keyword">typename</span> EK, <span class="keyword">typename</span> P, <span class="keyword">typename</span> S, <span class="keyword">typename</span> CS, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span> CS theta_union_base<EN, EK, P, S, CS, A>::get_result(<span class="keywordtype">bool</span> ordered)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  std::vector<EN, A> entries(table_.allocator_);</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">if</span> (table_.is_empty_) <span class="keywordflow">return</span> CS(<span class="keyword">true</span>, <span class="keyword">true</span>, compute_seed_hash(table_.seed_), union_theta_, std::move(entries));</div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  entries.reserve(table_.num_entries_);</div> |
| <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  uint64_t theta = std::min(union_theta_, table_.theta_);</div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keyword">const</span> uint32_t nominal_num = 1 << table_.lg_nom_size_;</div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">if</span> (union_theta_ >= table_.theta_) {</div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  std::copy_if(table_.begin(), table_.end(), std::back_inserter(entries), key_not_zero<EN, EK>());</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  std::copy_if(table_.begin(), table_.end(), std::back_inserter(entries), key_not_zero_less_than<uint64_t, EN, EK>(theta));</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="keywordflow">if</span> (entries.size() > nominal_num) {</div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  std::nth_element(entries.begin(), entries.begin() + nominal_num, entries.end(), comparator());</div> |
| <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  theta = EK()(entries[nominal_num]);</div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  entries.erase(entries.begin() + nominal_num, entries.end());</div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  entries.shrink_to_fit();</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  }</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">if</span> (ordered) std::sort(entries.begin(), entries.end(), comparator());</div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">return</span> CS(table_.is_empty_, ordered, compute_seed_hash(table_.seed_), theta, std::move(entries));</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> <span class="keyword">template</span><<span class="keyword">typename</span> EN, <span class="keyword">typename</span> EK, <span class="keyword">typename</span> P, <span class="keyword">typename</span> S, <span class="keyword">typename</span> CS, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="keyword">const</span> P& theta_union_base<EN, EK, P, S, CS, A>::get_policy()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">return</span> policy_;</div> |
| <div class="line"><a name="l00086"></a><span class="lineno"> 86</span> }</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> <span class="keyword">template</span><<span class="keyword">typename</span> EN, <span class="keyword">typename</span> EK, <span class="keyword">typename</span> P, <span class="keyword">typename</span> S, <span class="keyword">typename</span> CS, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="keywordtype">void</span> theta_union_base<EN, EK, P, S, CS, A>::reset() {</div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  table_.reset();</div> |
| <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  union_theta_ = table_.theta_;</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 datasketches */</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</span></div> |
| <div class="ttc" id="anamespacedatasketches_html"><div class="ttname"><a href="namespacedatasketches.html">datasketches</a></div><div class="ttdoc">DataSketches namespace.</div><div class="ttdef"><b>Definition:</b> binomial_bounds.hpp:38</div></div> |
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