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| <div class="title">var_opt_sketch_impl.hpp</div> </div> |
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| <div class="contents"> |
| <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 _VAR_OPT_SKETCH_IMPL_HPP_</span></div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#define _VAR_OPT_SKETCH_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 <memory></span></div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <sstream></span></div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <cmath></span></div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <random></span></div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <algorithm></span></div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <stdexcept></span></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="preprocessor">#include "var_opt_sketch.hpp"</span></div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "serde.hpp"</span></div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include "bounds_binomial_proportions.hpp"</span></div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include "count_zeros.hpp"</span></div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include "memory_operations.hpp"</span></div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include "ceiling_power_of_2.hpp"</span></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> <span class="keyword">namespace </span><a class="code" href="namespacedatasketches.html">datasketches</a> {</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> <span class="comment">/*</span></div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> * Implementation code for the VarOpt sketch.</span></div> |
| <div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> * author Kevin Lang </span></div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * author Jon Malkin</span></div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a6df9f2226b7197a0f612ee4aec0233e7"> 46</a></span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html#a6df9f2226b7197a0f612ee4aec0233e7">var_opt_sketch<T, A>::var_opt_sketch</a>(uint32_t k, resize_factor rf, <span class="keyword">const</span> A& allocator) :</div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>(k, rf, false, allocator) {}</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> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a3efbe40f3a9091fa581eaeef126b8285"> 50</a></span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html#a6df9f2226b7197a0f612ee4aec0233e7">var_opt_sketch<T, A>::var_opt_sketch</a>(<span class="keyword">const</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>& other) :</div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  k_(other.k_),</div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  h_(other.h_),</div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  m_(other.m_),</div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  r_(other.r_),</div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  n_(other.n_),</div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  total_wt_r_(other.total_wt_r_),</div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  rf_(other.rf_),</div> |
| <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  curr_items_alloc_(other.curr_items_alloc_),</div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  filled_data_(other.filled_data_),</div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  allocator_(other.allocator_),</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  data_(nullptr),</div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  weights_(nullptr),</div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  num_marks_in_h_(other.num_marks_in_h_),</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  marks_(nullptr)</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>  data_ = allocator_.allocate(curr_items_alloc_);</div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="comment">// skip gap or anything unused at the end</span></div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < h_; ++i)</div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keyword">new</span> (&data_[i]) T(other.data_[i]);</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = h_ + 1; i < h_ + r_ + 1; ++i)</div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">new</span> (&data_[i]) T(other.data_[i]);</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="comment">// we skipped the gap</span></div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  filled_data_ = <span class="keyword">false</span>;</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>  weights_ = AllocDouble(allocator_).allocate(curr_items_alloc_);</div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="comment">// doubles so can successfully copy regardless of the internal state</span></div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  std::copy(other.weights_, other.weights_ + curr_items_alloc_, weights_);</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a6df9f2226b7197a0f612ee4aec0233e7"> 79</a></span>  </div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">if</span> (other.marks_ != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  marks_ = AllocBool(allocator_).allocate(curr_items_alloc_);</div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  std::copy(other.marks_, other.marks_ + curr_items_alloc_, marks_);</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>  }</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="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00087"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a3efbe40f3a9091fa581eaeef126b8285"> 87</a></span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html#a6df9f2226b7197a0f612ee4aec0233e7">var_opt_sketch<T, A>::var_opt_sketch</a>(<span class="keyword">const</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>& other, <span class="keywordtype">bool</span> as_sketch, uint64_t adjusted_n) :</div> |
| <div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  k_(other.k_),</div> |
| <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  h_(other.h_),</div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  m_(other.m_),</div> |
| <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  r_(other.r_),</div> |
| <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  n_(adjusted_n),</div> |
| <div class="line"><a name="l00093"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a76983c7d51265ef49674a518925a7cf4"> 93</a></span>  total_wt_r_(other.total_wt_r_),</div> |
| <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  rf_(other.rf_),</div> |
| <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  curr_items_alloc_(other.curr_items_alloc_),</div> |
| <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  filled_data_(other.filled_data_),</div> |
| <div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  allocator_(other.allocator_),</div> |
| <div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  data_(nullptr),</div> |
| <div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  weights_(nullptr),</div> |
| <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  num_marks_in_h_(other.num_marks_in_h_),</div> |
| <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  marks_(nullptr)</div> |
| <div class="line"><a name="l00102"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a247dd627502e887562ae763adfe863ff"> 102</a></span>  {</div> |
| <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  data_ = allocator_.allocate(curr_items_alloc_);</div> |
| <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="comment">// skip gap or anything unused at the end</span></div> |
| <div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < h_; ++i)</div> |
| <div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keyword">new</span> (&data_[i]) T(other.data_[i]);</div> |
| <div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = h_ + 1; i < h_ + r_ + 1; ++i)</div> |
| <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keyword">new</span> (&data_[i]) T(other.data_[i]);</div> |
| <div class="line"><a name="l00109"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a18041b548e38eaca6d1a57e52a24a5e1"> 109</a></span>  </div> |
| <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="comment">// we skipped the gap</span></div> |
| <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  filled_data_ = <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  </div> |
| <div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  weights_ = AllocDouble(allocator_).allocate(curr_items_alloc_);</div> |
| <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="comment">// doubles so can successfully copy regardless of the internal state</span></div> |
| <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  std::copy(other.weights_, other.weights_ + curr_items_alloc_, weights_);</div> |
| <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  </div> |
| <div class="line"><a name="l00117"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a1125ed18baf3f257b5796321c7ec0f8f"> 117</a></span>  <span class="keywordflow">if</span> (!as_sketch && other.marks_ != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  marks_ = AllocBool(allocator_).allocate(curr_items_alloc_);</div> |
| <div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  std::copy(other.marks_, other.marks_ + curr_items_alloc_, marks_);</div> |
| <div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  }</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>  </div> |
| <div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a76983c7d51265ef49674a518925a7cf4"> 124</a></span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html#a6df9f2226b7197a0f612ee4aec0233e7">var_opt_sketch<T, A>::var_opt_sketch</a>(<a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>&& other) noexcept :</div> |
| <div class="line"><a name="l00125"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a9c07446b1fd8f8509f754ebaf3f77050"> 125</a></span>  k_(other.k_),</div> |
| <div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  h_(other.h_),</div> |
| <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  m_(other.m_),</div> |
| <div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  r_(other.r_),</div> |
| <div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  n_(other.n_),</div> |
| <div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  total_wt_r_(other.total_wt_r_),</div> |
| <div class="line"><a name="l00131"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#af561f5cd76ff61773713c627bc53b0a2"> 131</a></span>  rf_(other.rf_),</div> |
| <div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  curr_items_alloc_(other.curr_items_alloc_),</div> |
| <div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  filled_data_(other.filled_data_),</div> |
| <div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  allocator_(other.allocator_),</div> |
| <div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  data_(other.data_),</div> |
| <div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  weights_(other.weights_),</div> |
| <div class="line"><a name="l00137"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#af857be9469a7565252626f27e1f9d74d"> 137</a></span>  num_marks_in_h_(other.num_marks_in_h_),</div> |
| <div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  marks_(other.marks_)</div> |
| <div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  {</div> |
| <div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  other.data_ = <span class="keyword">nullptr</span>;</div> |
| <div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  other.weights_ = <span class="keyword">nullptr</span>;</div> |
| <div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  other.marks_ = <span class="keyword">nullptr</span>;</div> |
| <div class="line"><a name="l00143"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#ac481918ec96d79b27813d32bcc2a247d"> 143</a></span>  }</div> |
| <div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  </div> |
| <div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html#a6df9f2226b7197a0f612ee4aec0233e7">var_opt_sketch<T, A>::var_opt_sketch</a>(uint32_t k, resize_factor rf, <span class="keywordtype">bool</span> is_gadget, <span class="keyword">const</span> A& allocator) :</div> |
| <div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  k_(k), h_(0), m_(0), r_(0), n_(0), total_wt_r_(0.0), rf_(rf), allocator_(allocator) {</div> |
| <div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">if</span> (k == 0 || k_ > MAX_K) {</div> |
| <div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"k must be at least 1 and less than 2^31 - 1"</span>);</div> |
| <div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  }</div> |
| <div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  </div> |
| <div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  uint32_t ceiling_lg_k = to_log_2(ceiling_power_of_2(k_));</div> |
| <div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  uint32_t initial_lg_size = starting_sub_multiple(ceiling_lg_k, rf_, MIN_LG_ARR_ITEMS);</div> |
| <div class="line"><a name="l00154"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a71f1302dd93f895508f65893f96796fa"> 154</a></span>  curr_items_alloc_ = get_adjusted_size(k_, 1 << initial_lg_size);</div> |
| <div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordflow">if</span> (curr_items_alloc_ == k_) { <span class="comment">// if full size, need to leave 1 for the gap</span></div> |
| <div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  ++curr_items_alloc_;</div> |
| <div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  }</div> |
| <div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  </div> |
| <div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  allocate_data_arrays(curr_items_alloc_, is_gadget);</div> |
| <div class="line"><a name="l00160"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a5a2b7a58dc85678d08752945ff655362"> 160</a></span>  num_marks_in_h_ = 0;</div> |
| <div class="line"><a name="l00161"></a><span class="lineno"> 161</span> }</div> |
| <div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  </div> |
| <div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::var_opt_sketch</a>(uint32_t k, uint32_t h, uint32_t m, uint32_t r, uint64_t n, <span class="keywordtype">double</span> total_wt_r, resize_factor rf,</div> |
| <div class="line"><a name="l00165"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#ad20897c5c8bd47f5d4005989bead0e55"> 165</a></span>  uint32_t curr_items_alloc, <span class="keywordtype">bool</span> filled_data, std::unique_ptr<T, items_deleter> items,</div> |
| <div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  std::unique_ptr<double, weights_deleter> weights, uint32_t num_marks_in_h,</div> |
| <div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  std::unique_ptr<bool, marks_deleter> marks, <span class="keyword">const</span> A& allocator) :</div> |
| <div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  k_(k),</div> |
| <div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  h_(h),</div> |
| <div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  m_(m),</div> |
| <div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  r_(r),</div> |
| <div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  n_(n),</div> |
| <div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  total_wt_r_(total_wt_r),</div> |
| <div class="line"><a name="l00174"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#ad9a5259d93d148b5c2050d68e7788716"> 174</a></span>  rf_(rf),</div> |
| <div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  curr_items_alloc_(curr_items_alloc),</div> |
| <div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  filled_data_(filled_data),</div> |
| <div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  allocator_(allocator),</div> |
| <div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  data_(items.release()),</div> |
| <div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  weights_(weights.release()),</div> |
| <div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  num_marks_in_h_(num_marks_in_h),</div> |
| <div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  marks_(marks.release())</div> |
| <div class="line"><a name="l00182"></a><span class="lineno"> 182</span> {}</div> |
| <div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  </div> |
| <div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  </div> |
| <div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::~var_opt_sketch</a>() {</div> |
| <div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keywordflow">if</span> (data_ != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordflow">if</span> (filled_data_) {</div> |
| <div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="comment">// destroy everything</span></div> |
| <div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> num_to_destroy = std::min(k_ + 1, curr_items_alloc_);</div> |
| <div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < num_to_destroy; ++i) {</div> |
| <div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  data_[i].~T();</div> |
| <div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  }</div> |
| <div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="comment">// skip gap or anything unused at the end</span></div> |
| <div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < h_; ++i) {</div> |
| <div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  data_[i].~T();</div> |
| <div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  }</div> |
| <div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  </div> |
| <div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = h_ + 1; i < h_ + r_ + 1; ++i) {</div> |
| <div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  data_[i].~T();</div> |
| <div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  }</div> |
| <div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  }</div> |
| <div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  allocator_.deallocate(data_, curr_items_alloc_);</div> |
| <div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  }</div> |
| <div class="line"><a name="l00206"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a538940c100e4353b3671ad452d3d3056"> 206</a></span>  </div> |
| <div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordflow">if</span> (weights_ != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  AllocDouble(allocator_).deallocate(weights_, curr_items_alloc_);</div> |
| <div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  }</div> |
| <div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  </div> |
| <div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">if</span> (marks_ != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  AllocBool(allocator_).deallocate(marks_, curr_items_alloc_);</div> |
| <div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  }</div> |
| <div class="line"><a name="l00214"></a><span class="lineno"> 214</span> }</div> |
| <div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  </div> |
| <div class="line"><a name="l00216"></a><span class="lineno"> 216</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00217"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a247dd627502e887562ae763adfe863ff"> 217</a></span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A></a>& <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::operator=</a>(<span class="keyword">const</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>& other) {</div> |
| <div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a> sk_copy(other);</div> |
| <div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  std::swap(k_, sk_copy.k_);</div> |
| <div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  std::swap(h_, sk_copy.h_);</div> |
| <div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  std::swap(m_, sk_copy.m_);</div> |
| <div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  std::swap(r_, sk_copy.r_);</div> |
| <div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  std::swap(n_, sk_copy.n_);</div> |
| <div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  std::swap(total_wt_r_, sk_copy.total_wt_r_);</div> |
| <div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  std::swap(rf_, sk_copy.rf_);</div> |
| <div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  std::swap(curr_items_alloc_, sk_copy.curr_items_alloc_);</div> |
| <div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  std::swap(filled_data_, sk_copy.filled_data_);</div> |
| <div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  std::swap(allocator_, sk_copy.allocator_);</div> |
| <div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  std::swap(data_, sk_copy.data_);</div> |
| <div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  std::swap(weights_, sk_copy.weights_);</div> |
| <div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  std::swap(num_marks_in_h_, sk_copy.num_marks_in_h_);</div> |
| <div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  std::swap(marks_, sk_copy.marks_);</div> |
| <div class="line"><a name="l00233"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#aed372241c10ffd041bee85602edb199a"> 233</a></span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div> |
| <div class="line"><a name="l00234"></a><span class="lineno"> 234</span> }</div> |
| <div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  </div> |
| <div class="line"><a name="l00236"></a><span class="lineno"> 236</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00237"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a18041b548e38eaca6d1a57e52a24a5e1"> 237</a></span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A></a>& <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::operator=</a>(<a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>&& other) {</div> |
| <div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  std::swap(k_, other.k_);</div> |
| <div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  std::swap(h_, other.h_);</div> |
| <div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  std::swap(m_, other.m_);</div> |
| <div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  std::swap(r_, other.r_);</div> |
| <div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  std::swap(n_, other.n_);</div> |
| <div class="line"><a name="l00243"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a0fa52dd153f1e3cac57d4742e2fef6fc"> 243</a></span>  std::swap(total_wt_r_, other.total_wt_r_);</div> |
| <div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  std::swap(rf_, other.rf_);</div> |
| <div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  std::swap(curr_items_alloc_, other.curr_items_alloc_);</div> |
| <div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  std::swap(filled_data_, other.filled_data_);</div> |
| <div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  std::swap(allocator_, other.allocator_);</div> |
| <div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  std::swap(data_, other.data_);</div> |
| <div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  std::swap(weights_, other.weights_);</div> |
| <div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  std::swap(num_marks_in_h_, other.num_marks_in_h_);</div> |
| <div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  std::swap(marks_, other.marks_);</div> |
| <div class="line"><a name="l00252"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a0faac62cb9f27b09afc849def518f5cc"> 252</a></span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div> |
| <div class="line"><a name="l00253"></a><span class="lineno"> 253</span> }</div> |
| <div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  </div> |
| <div class="line"><a name="l00255"></a><span class="lineno"> 255</span> <span class="comment">/*</span></div> |
| <div class="line"><a name="l00256"></a><span class="lineno"> 256</span> <span class="comment"> * An empty sketch requires 8 bytes.</span></div> |
| <div class="line"><a name="l00257"></a><span class="lineno"> 257</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00258"></a><span class="lineno"> 258</span> <span class="comment"> * <pre></span></div> |
| <div class="line"><a name="l00259"></a><span class="lineno"> 259</span> <span class="comment"> * Long || Start Byte Adr:</span></div> |
| <div class="line"><a name="l00260"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#ae9e1e5356b5d10a177fa50f7bdfdfd96"> 260</a></span> <span class="comment"> * Adr:</span></div> |
| <div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="comment"> * || 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |</span></div> |
| <div class="line"><a name="l00262"></a><span class="lineno"> 262</span> <span class="comment"> * 0 || Preamble_Longs | SerVer | FamID | Flags |---------Max Res. Size (K)---------|</span></div> |
| <div class="line"><a name="l00263"></a><span class="lineno"> 263</span> <span class="comment"> * </pre></span></div> |
| <div class="line"><a name="l00264"></a><span class="lineno"> 264</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00265"></a><span class="lineno"> 265</span> <span class="comment"> * A non-empty sketch requires 24 bytes of preamble for an under-full sample; once there are</span></div> |
| <div class="line"><a name="l00266"></a><span class="lineno"> 266</span> <span class="comment"> * at least k items the sketch uses 32 bytes of preamble.</span></div> |
| <div class="line"><a name="l00267"></a><span class="lineno"> 267</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00268"></a><span class="lineno"> 268</span> <span class="comment"> * The count of items seen is limited to 48 bits (~256 trillion) even though there are adjacent</span></div> |
| <div class="line"><a name="l00269"></a><span class="lineno"> 269</span> <span class="comment"> * unused preamble bits. The acceptance probability for an item is a double in the range [0,1),</span></div> |
| <div class="line"><a name="l00270"></a><span class="lineno"> 270</span> <span class="comment"> * limiting us to 53 bits of randomness due to details of the IEEE floating point format. To</span></div> |
| <div class="line"><a name="l00271"></a><span class="lineno"> 271</span> <span class="comment"> * ensure meaningful probabilities as the items seen count approaches capacity, we intentionally</span></div> |
| <div class="line"><a name="l00272"></a><span class="lineno"> 272</span> <span class="comment"> * use slightly fewer bits.</span></div> |
| <div class="line"><a name="l00273"></a><span class="lineno"> 273</span> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00274"></a><span class="lineno"> 274</span> <span class="comment"> * Following the header are weights for the heavy items, then marks in the event this is a gadget.</span></div> |
| <div class="line"><a name="l00275"></a><span class="lineno"> 275</span> <span class="comment"> * The serialized items come last.</span></div> |
| <div class="line"><a name="l00276"></a><span class="lineno"> 276</span> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00277"></a><span class="lineno"> 277</span> <span class="comment"> * <pre></span></div> |
| <div class="line"><a name="l00278"></a><span class="lineno"> 278</span> <span class="comment"> * Long || Start Byte Adr:</span></div> |
| <div class="line"><a name="l00279"></a><span class="lineno"> 279</span> <span class="comment"> * Adr:</span></div> |
| <div class="line"><a name="l00280"></a><span class="lineno"> 280</span> <span class="comment"> * || 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |</span></div> |
| <div class="line"><a name="l00281"></a><span class="lineno"> 281</span> <span class="comment"> * 0 || Preamble_Longs | SerVer | FamID | Flags |---------Max Res. Size (K)---------|</span></div> |
| <div class="line"><a name="l00282"></a><span class="lineno"> 282</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00283"></a><span class="lineno"> 283</span> <span class="comment"> * || 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |</span></div> |
| <div class="line"><a name="l00284"></a><span class="lineno"> 284</span> <span class="comment"> * 1 ||---------------------------Items Seen Count (N)--------------------------------|</span></div> |
| <div class="line"><a name="l00285"></a><span class="lineno"> 285</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00286"></a><span class="lineno"> 286</span> <span class="comment"> * || 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |</span></div> |
| <div class="line"><a name="l00287"></a><span class="lineno"> 287</span> <span class="comment"> * 2 ||-------------Item Count in H---------------|-------Item Count in R-------------|</span></div> |
| <div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00289"></a><span class="lineno"> 289</span> <span class="comment"> * || 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |</span></div> |
| <div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <span class="comment"> * 3 ||-------------------------------Total Weight in R-------------------------------|</span></div> |
| <div class="line"><a name="l00291"></a><span class="lineno"> 291</span> <span class="comment"> * </pre></span></div> |
| <div class="line"><a name="l00292"></a><span class="lineno"> 292</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  </div> |
| <div class="line"><a name="l00294"></a><span class="lineno"> 294</span> <span class="comment">// implementation for fixed-size arithmetic types (integral and floating point)</span></div> |
| <div class="line"><a name="l00295"></a><span class="lineno"> 295</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00296"></a><span class="lineno"> 296</span> template<typename TT, typename SerDe, typename std::enable_if<std::is_arithmetic<TT>::value, <span class="keywordtype">int</span>>::type></div> |
| <div class="line"><a name="l00297"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#ad9a5259d93d148b5c2050d68e7788716"> 297</a></span> <span class="keywordtype">size_t</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::get_serialized_size_bytes</a>(<span class="keyword">const</span> SerDe&)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="keywordflow">if</span> (is_empty()) { <span class="keywordflow">return</span> PREAMBLE_LONGS_EMPTY << 3; }</div> |
| <div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <span class="keywordtype">size_t</span> num_bytes = (r_ == 0 ? PREAMBLE_LONGS_WARMUP : PREAMBLE_LONGS_FULL) << 3;</div> |
| <div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  num_bytes += h_ * <span class="keyword">sizeof</span>(double); <span class="comment">// weights</span></div> |
| <div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="keywordflow">if</span> (marks_ != <span class="keyword">nullptr</span>) { <span class="comment">// marks</span></div> |
| <div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  num_bytes += (h_ / 8) + (h_ % 8 > 0);</div> |
| <div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  }</div> |
| <div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  num_bytes += (h_ + r_) * <span class="keyword">sizeof</span>(TT); <span class="comment">// the actual items</span></div> |
| <div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="keywordflow">return</span> num_bytes;</div> |
| <div class="line"><a name="l00306"></a><span class="lineno"> 306</span> }</div> |
| <div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  </div> |
| <div class="line"><a name="l00308"></a><span class="lineno"> 308</span> <span class="comment">// implementation for all other types</span></div> |
| <div class="line"><a name="l00309"></a><span class="lineno"> 309</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00310"></a><span class="lineno"> 310</span> template<typename TT, typename SerDe, typename std::enable_if<!std::is_arithmetic<TT>::value, <span class="keywordtype">int</span>>::type></div> |
| <div class="line"><a name="l00311"></a><span class="lineno"> 311</span> <span class="keywordtype">size_t</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::get_serialized_size_bytes</a>(<span class="keyword">const</span> SerDe& sd)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <span class="keywordflow">if</span> (is_empty()) { <span class="keywordflow">return</span> PREAMBLE_LONGS_EMPTY << 3; }</div> |
| <div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="keywordtype">size_t</span> num_bytes = (r_ == 0 ? PREAMBLE_LONGS_WARMUP : PREAMBLE_LONGS_FULL) << 3;</div> |
| <div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  num_bytes += h_ * <span class="keyword">sizeof</span>(double); <span class="comment">// weights</span></div> |
| <div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span class="keywordflow">if</span> (marks_ != <span class="keyword">nullptr</span>) { <span class="comment">// marks</span></div> |
| <div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  num_bytes += (h_ / 8) + (h_ % 8 > 0);</div> |
| <div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  }</div> |
| <div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="comment">// must iterate over the items</span></div> |
| <div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span> it: *<span class="keyword">this</span>)</div> |
| <div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  num_bytes += sd.size_of_item(it.first);</div> |
| <div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="keywordflow">return</span> num_bytes;</div> |
| <div class="line"><a name="l00322"></a><span class="lineno"> 322</span> }</div> |
| <div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  </div> |
| <div class="line"><a name="l00324"></a><span class="lineno"> 324</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00325"></a><span class="lineno"> 325</span> <span class="keyword">template</span><<span class="keyword">typename</span> SerDe></div> |
| <div class="line"><a name="l00326"></a><span class="lineno"> 326</span> std::vector<uint8_t, AllocU8<A>> <a class="code" href="classdatasketches_1_1var__opt__sketch.html#a1d0c269c23926e93b1c7a9c00e86af97">var_opt_sketch<T, A>::serialize</a>(<span class="keywordtype">unsigned</span> header_size_bytes, <span class="keyword">const</span> SerDe& sd)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> size = header_size_bytes + get_serialized_size_bytes(sd);</div> |
| <div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  std::vector<uint8_t, AllocU8<A>> bytes(size, 0, allocator_);</div> |
| <div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  uint8_t* ptr = bytes.data() + header_size_bytes;</div> |
| <div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  uint8_t* end_ptr = ptr + size;</div> |
| <div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  </div> |
| <div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="keywordtype">bool</span> empty = is_empty();</div> |
| <div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  uint8_t preLongs = (empty ? PREAMBLE_LONGS_EMPTY</div> |
| <div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  : (r_ == 0 ? PREAMBLE_LONGS_WARMUP : PREAMBLE_LONGS_FULL));</div> |
| <div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  uint8_t first_byte = (preLongs & 0x3F) | ((<span class="keyword">static_cast<</span>uint8_t<span class="keyword">></span>(rf_)) << 6);</div> |
| <div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  uint8_t flags = (marks_ != <span class="keyword">nullptr</span> ? GADGET_FLAG_MASK : 0);</div> |
| <div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  </div> |
| <div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <span class="keywordflow">if</span> (empty) {</div> |
| <div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  flags |= EMPTY_FLAG_MASK;</div> |
| <div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  }</div> |
| <div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  </div> |
| <div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <span class="comment">// first prelong</span></div> |
| <div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  uint8_t ser_ver(SER_VER);</div> |
| <div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  uint8_t family(FAMILY_ID);</div> |
| <div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  ptr += copy_to_mem(first_byte, ptr);</div> |
| <div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  ptr += copy_to_mem(ser_ver, ptr);</div> |
| <div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  ptr += copy_to_mem(family, ptr);</div> |
| <div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  ptr += copy_to_mem(flags, ptr);</div> |
| <div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  ptr += copy_to_mem(k_, ptr);</div> |
| <div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  </div> |
| <div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keywordflow">if</span> (!empty) {</div> |
| <div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  <span class="comment">// second and third prelongs</span></div> |
| <div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  ptr += copy_to_mem(n_, ptr);</div> |
| <div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  ptr += copy_to_mem(h_, ptr);</div> |
| <div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  ptr += copy_to_mem(r_, ptr);</div> |
| <div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  </div> |
| <div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <span class="comment">// fourth prelong, if needed</span></div> |
| <div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="keywordflow">if</span> (r_ > 0) {</div> |
| <div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  ptr += copy_to_mem(total_wt_r_, ptr);</div> |
| <div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  }</div> |
| <div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  </div> |
| <div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  <span class="comment">// first h_ weights</span></div> |
| <div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  ptr += copy_to_mem(weights_, ptr, h_ * <span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));</div> |
| <div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  </div> |
| <div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <span class="comment">// first h_ marks as packed bytes iff we have a gadget</span></div> |
| <div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <span class="keywordflow">if</span> (marks_ != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  uint8_t val = 0;</div> |
| <div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="keywordflow">for</span> (uint32_t i = 0; i < h_; ++i) {</div> |
| <div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <span class="keywordflow">if</span> (marks_[i]) {</div> |
| <div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  val |= 0x1 << (i & 0x7);</div> |
| <div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  }</div> |
| <div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  </div> |
| <div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="keywordflow">if</span> ((i & 0x7) == 0x7) {</div> |
| <div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  ptr += copy_to_mem(val, ptr);</div> |
| <div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  val = 0;</div> |
| <div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  }</div> |
| <div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  }</div> |
| <div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  </div> |
| <div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <span class="comment">// write out any remaining values</span></div> |
| <div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keywordflow">if</span> ((h_ & 0x7) > 0) {</div> |
| <div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  ptr += copy_to_mem(val, ptr);</div> |
| <div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  }</div> |
| <div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  }</div> |
| <div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  </div> |
| <div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="comment">// write the sample items, skipping the gap. Either h_ or r_ may be 0</span></div> |
| <div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  ptr += sd.serialize(ptr, end_ptr - ptr, data_, h_);</div> |
| <div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  ptr += sd.serialize(ptr, end_ptr - ptr, &data_[h_ + 1], r_);</div> |
| <div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  }</div> |
| <div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  </div> |
| <div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <span class="keywordtype">size_t</span> bytes_written = ptr - bytes.data();</div> |
| <div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="keywordflow">if</span> (bytes_written != size) {</div> |
| <div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"serialized size mismatch: "</span> + std::to_string(bytes_written) + <span class="stringliteral">" != "</span> + std::to_string(size));</div> |
| <div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  }</div> |
| <div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  </div> |
| <div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  <span class="keywordflow">return</span> bytes;</div> |
| <div class="line"><a name="l00396"></a><span class="lineno"> 396</span> }</div> |
| <div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  </div> |
| <div class="line"><a name="l00398"></a><span class="lineno"> 398</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00399"></a><span class="lineno"> 399</span> <span class="keyword">template</span><<span class="keyword">typename</span> SerDe></div> |
| <div class="line"><a name="l00400"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a538940c100e4353b3671ad452d3d3056"> 400</a></span> <span class="keywordtype">void</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::serialize</a>(std::ostream& os, <span class="keyword">const</span> SerDe& sd)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> empty = (h_ == 0) && (r_ == 0);</div> |
| <div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  </div> |
| <div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="keyword">const</span> uint8_t preLongs = (empty ? PREAMBLE_LONGS_EMPTY</div> |
| <div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  : (r_ == 0 ? PREAMBLE_LONGS_WARMUP : PREAMBLE_LONGS_FULL));</div> |
| <div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  <span class="keyword">const</span> uint8_t first_byte = (preLongs & 0x3F) | ((<span class="keyword">static_cast<</span>uint8_t<span class="keyword">></span>(rf_)) << 6);</div> |
| <div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  uint8_t flags = (marks_ != <span class="keyword">nullptr</span> ? GADGET_FLAG_MASK : 0);</div> |
| <div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  </div> |
| <div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <span class="keywordflow">if</span> (empty) {</div> |
| <div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  flags |= EMPTY_FLAG_MASK;</div> |
| <div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  }</div> |
| <div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  </div> |
| <div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  <span class="comment">// first prelong</span></div> |
| <div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  <span class="keyword">const</span> uint8_t ser_ver(SER_VER);</div> |
| <div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <span class="keyword">const</span> uint8_t family(FAMILY_ID);</div> |
| <div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  write(os, first_byte);</div> |
| <div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  write(os, ser_ver);</div> |
| <div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  write(os, family);</div> |
| <div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  write(os, flags);</div> |
| <div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  write(os, k_);</div> |
| <div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  </div> |
| <div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  <span class="keywordflow">if</span> (!empty) {</div> |
| <div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <span class="comment">// second and third prelongs</span></div> |
| <div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  write(os, n_);</div> |
| <div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  write(os, h_);</div> |
| <div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  write(os, r_);</div> |
| <div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  </div> |
| <div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  <span class="comment">// fourth prelong, if needed</span></div> |
| <div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  <span class="keywordflow">if</span> (r_ > 0) {</div> |
| <div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  write(os, total_wt_r_);</div> |
| <div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  }</div> |
| <div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  </div> |
| <div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <span class="comment">// write the first h_ weights</span></div> |
| <div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  write(os, weights_, h_ * <span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));</div> |
| <div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  </div> |
| <div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  <span class="comment">// write the first h_ marks as packed bytes iff we have a gadget</span></div> |
| <div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  <span class="keywordflow">if</span> (marks_ != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  uint8_t val = 0;</div> |
| <div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="keywordflow">for</span> (uint32_t i = 0; i < h_; ++i) {</div> |
| <div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  <span class="keywordflow">if</span> (marks_[i]) {</div> |
| <div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  val |= 0x1 << (i & 0x7);</div> |
| <div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  }</div> |
| <div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  </div> |
| <div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  <span class="keywordflow">if</span> ((i & 0x7) == 0x7) {</div> |
| <div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  write(os, val);</div> |
| <div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  val = 0;</div> |
| <div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  }</div> |
| <div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  }</div> |
| <div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  </div> |
| <div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  <span class="comment">// write out any remaining values</span></div> |
| <div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  <span class="keywordflow">if</span> ((h_ & 0x7) > 0) {</div> |
| <div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  write(os, val);</div> |
| <div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  }</div> |
| <div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  }</div> |
| <div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  </div> |
| <div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <span class="comment">// write the sample items, skipping the gap. Either h_ or r_ may be 0</span></div> |
| <div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  sd.serialize(os, data_, h_);</div> |
| <div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  sd.serialize(os, &data_[h_ + 1], r_);</div> |
| <div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  }</div> |
| <div class="line"><a name="l00459"></a><span class="lineno"> 459</span> }</div> |
| <div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  </div> |
| <div class="line"><a name="l00461"></a><span class="lineno"> 461</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00462"></a><span class="lineno"> 462</span> <span class="keyword">template</span><<span class="keyword">typename</span> SerDe></div> |
| <div class="line"><a name="l00463"></a><span class="lineno"> 463</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A></a> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::deserialize</a>(<span class="keyword">const</span> <span class="keywordtype">void</span>* bytes, <span class="keywordtype">size_t</span> size, <span class="keyword">const</span> SerDe& sd, <span class="keyword">const</span> A& allocator) {</div> |
| <div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  ensure_minimum_memory(size, 8);</div> |
| <div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  <span class="keyword">const</span> <span class="keywordtype">char</span>* ptr = <span class="keyword">static_cast<</span><span class="keyword">const </span><span class="keywordtype">char</span>*<span class="keyword">></span>(bytes);</div> |
| <div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  <span class="keyword">const</span> <span class="keywordtype">char</span>* base = ptr;</div> |
| <div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <span class="keyword">const</span> <span class="keywordtype">char</span>* end_ptr = ptr + size;</div> |
| <div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  uint8_t first_byte;</div> |
| <div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  ptr += copy_from_mem(ptr, first_byte);</div> |
| <div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  uint8_t preamble_longs = first_byte & 0x3f;</div> |
| <div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  resize_factor rf = <span class="keyword">static_cast<</span>resize_factor<span class="keyword">></span>((first_byte >> 6) & 0x03);</div> |
| <div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  uint8_t serial_version;</div> |
| <div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  ptr += copy_from_mem(ptr, serial_version);</div> |
| <div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  uint8_t family_id;</div> |
| <div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  ptr += copy_from_mem(ptr, family_id);</div> |
| <div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  uint8_t flags;</div> |
| <div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  ptr += copy_from_mem(ptr, flags);</div> |
| <div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  uint32_t k;</div> |
| <div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  ptr += copy_from_mem(ptr, k);</div> |
| <div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  </div> |
| <div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  check_preamble_longs(preamble_longs, flags);</div> |
| <div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  check_family_and_serialization_version(family_id, serial_version);</div> |
| <div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  ensure_minimum_memory(size, preamble_longs << 3);</div> |
| <div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  </div> |
| <div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> is_empty = flags & EMPTY_FLAG_MASK;</div> |
| <div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> is_gadget = flags & GADGET_FLAG_MASK;</div> |
| <div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  </div> |
| <div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  <span class="keywordflow">if</span> (is_empty) {</div> |
| <div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  <span class="keywordflow">return</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>(k, rf, is_gadget, allocator);</div> |
| <div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  }</div> |
| <div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  </div> |
| <div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <span class="comment">// second and third prelongs</span></div> |
| <div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  uint64_t n;</div> |
| <div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  uint32_t h, r;</div> |
| <div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  ptr += copy_from_mem(ptr, n);</div> |
| <div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  ptr += copy_from_mem(ptr, h);</div> |
| <div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  ptr += copy_from_mem(ptr, r);</div> |
| <div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  </div> |
| <div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  <span class="keyword">const</span> uint32_t array_size = validate_and_get_target_size(preamble_longs, k, n, h, r, rf);</div> |
| <div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  </div> |
| <div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  <span class="comment">// current_items_alloc_ is set but validate R region weight (4th prelong), if needed, before allocating</span></div> |
| <div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  <span class="keywordtype">double</span> total_wt_r = 0.0;</div> |
| <div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  <span class="keywordflow">if</span> (preamble_longs == PREAMBLE_LONGS_FULL) {</div> |
| <div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  ptr += copy_from_mem(ptr, total_wt_r);</div> |
| <div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  <span class="keywordflow">if</span> (std::isnan(total_wt_r) || r == 0 || total_wt_r <= 0.0) {</div> |
| <div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Possible corruption: deserializing in full mode but r = 0 or invalid R weight. "</span></div> |
| <div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  <span class="stringliteral">"Found r = "</span> + std::to_string(r) + <span class="stringliteral">", R region weight = "</span> + std::to_string(total_wt_r));</div> |
| <div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  }</div> |
| <div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  total_wt_r = 0.0;</div> |
| <div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  }</div> |
| <div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  </div> |
| <div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  <span class="comment">// read the first h_ weights, fill in rest of array with -1.0</span></div> |
| <div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  check_memory_size(ptr - base + (h * <span class="keyword">sizeof</span>(<span class="keywordtype">double</span>)), size);</div> |
| <div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  std::unique_ptr<double, weights_deleter> weights(AllocDouble(allocator).allocate(array_size),</div> |
| <div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  weights_deleter(array_size, allocator));</div> |
| <div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  <span class="keywordtype">double</span>* wts = weights.get(); <span class="comment">// to avoid lots of .get() calls -- do not delete</span></div> |
| <div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  ptr += copy_from_mem(ptr, wts, h * <span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));</div> |
| <div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < h; ++i) {</div> |
| <div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  <span class="keywordflow">if</span> (!(wts[i] > 0.0)) {</div> |
| <div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Possible corruption: Non-positive weight when deserializing: "</span> + std::to_string(wts[i]));</div> |
| <div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  }</div> |
| <div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  }</div> |
| <div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  std::fill(wts + h, wts + array_size, -1.0);</div> |
| <div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  </div> |
| <div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <span class="comment">// read the first h_ marks as packed bytes iff we have a gadget</span></div> |
| <div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  uint32_t num_marks_in_h = 0;</div> |
| <div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  std::unique_ptr<bool, marks_deleter> marks(<span class="keyword">nullptr</span>, marks_deleter(array_size, allocator));</div> |
| <div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  <span class="keywordflow">if</span> (is_gadget) {</div> |
| <div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  uint8_t val = 0;</div> |
| <div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  marks = std::unique_ptr<bool, marks_deleter>(AllocBool(allocator).allocate(array_size), marks_deleter(array_size, allocator));</div> |
| <div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> size_marks = (h / 8) + (h % 8 > 0 ? 1 : 0);</div> |
| <div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  check_memory_size(ptr - base + size_marks, size);</div> |
| <div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  <span class="keywordflow">for</span> (uint32_t i = 0; i < h; ++i) {</div> |
| <div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  <span class="keywordflow">if</span> ((i & 0x7) == 0x0) { <span class="comment">// should trigger on first iteration</span></div> |
| <div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  ptr += copy_from_mem(ptr, val);</div> |
| <div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  }</div> |
| <div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  marks.get()[i] = ((val >> (i & 0x7)) & 0x1) == 1;</div> |
| <div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  num_marks_in_h += (marks.get()[i] ? 1 : 0);</div> |
| <div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  }</div> |
| <div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  }</div> |
| <div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  </div> |
| <div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  <span class="comment">// read the sample items, skipping the gap. Either h_ or r_ may be 0</span></div> |
| <div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  items_deleter deleter(array_size, allocator);</div> |
| <div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  std::unique_ptr<T, items_deleter> items(A(allocator).allocate(array_size), deleter);</div> |
| <div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  </div> |
| <div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  ptr += sd.deserialize(ptr, end_ptr - ptr, items.get(), h);</div> |
| <div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  items.get_deleter().set_h(h); <span class="comment">// serde didn't throw, so the items are now valid</span></div> |
| <div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  </div> |
| <div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  ptr += sd.deserialize(ptr, end_ptr - ptr, &(items.get()[h + 1]), r);</div> |
| <div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  items.get_deleter().set_r(r); <span class="comment">// serde didn't throw, so the items are now valid</span></div> |
| <div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  </div> |
| <div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  <span class="keywordflow">return</span> var_opt_sketch(k, h, (r > 0 ? 1 : 0), r, n, total_wt_r, rf, array_size, <span class="keyword">false</span>,</div> |
| <div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  std::move(items), std::move(weights), num_marks_in_h, std::move(marks), allocator);</div> |
| <div class="line"><a name="l00555"></a><span class="lineno"> 555</span> }</div> |
| <div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  </div> |
| <div class="line"><a name="l00557"></a><span class="lineno"> 557</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00558"></a><span class="lineno"> 558</span> <span class="keyword">template</span><<span class="keyword">typename</span> SerDe></div> |
| <div class="line"><a name="l00559"></a><span class="lineno"> 559</span> var_opt_sketch<T, A> <a class="code" href="classdatasketches_1_1var__opt__sketch.html#aea8f1c4a6d0189de0db5b5cd085c39b1">var_opt_sketch<T, A>::deserialize</a>(std::istream& is, <span class="keyword">const</span> SerDe& sd, <span class="keyword">const</span> A& allocator) {</div> |
| <div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  <span class="keyword">const</span> <span class="keyword">auto</span> first_byte = read<uint8_t>(is);</div> |
| <div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  uint8_t preamble_longs = first_byte & 0x3f;</div> |
| <div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  <span class="keyword">const</span> resize_factor rf = <span class="keyword">static_cast<</span>resize_factor<span class="keyword">></span>((first_byte >> 6) & 0x03);</div> |
| <div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  <span class="keyword">const</span> <span class="keyword">auto</span> serial_version = read<uint8_t>(is);</div> |
| <div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  <span class="keyword">const</span> <span class="keyword">auto</span> family_id = read<uint8_t>(is);</div> |
| <div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  <span class="keyword">const</span> <span class="keyword">auto</span> flags = read<uint8_t>(is);</div> |
| <div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  <span class="keyword">const</span> <span class="keyword">auto</span> k = read<uint32_t>(is);</div> |
| <div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  </div> |
| <div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  check_preamble_longs(preamble_longs, flags);</div> |
| <div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  check_family_and_serialization_version(family_id, serial_version);</div> |
| <div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  </div> |
| <div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> is_empty = flags & EMPTY_FLAG_MASK;</div> |
| <div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> is_gadget = flags & GADGET_FLAG_MASK;</div> |
| <div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  </div> |
| <div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  <span class="keywordflow">if</span> (is_empty) {</div> |
| <div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  <span class="keywordflow">if</span> (!is.good())</div> |
| <div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"error reading from std::istream"</span>); </div> |
| <div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  <span class="keywordflow">else</span></div> |
| <div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  <span class="keywordflow">return</span> var_opt_sketch(k, rf, is_gadget, allocator);</div> |
| <div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  }</div> |
| <div class="line"><a name="l00580"></a><span class="lineno"> 580</span>  </div> |
| <div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  <span class="comment">// second and third prelongs</span></div> |
| <div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  <span class="keyword">const</span> <span class="keyword">auto</span> n = read<uint64_t>(is);</div> |
| <div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  <span class="keyword">const</span> <span class="keyword">auto</span> h = read<uint32_t>(is);</div> |
| <div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  <span class="keyword">const</span> <span class="keyword">auto</span> r = read<uint32_t>(is);</div> |
| <div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  </div> |
| <div class="line"><a name="l00586"></a><span class="lineno"> 586</span>  <span class="keyword">const</span> uint32_t array_size = validate_and_get_target_size(preamble_longs, k, n, h, r, rf);</div> |
| <div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  </div> |
| <div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  <span class="comment">// current_items_alloc_ is set but validate R region weight (4th prelong), if needed, before allocating</span></div> |
| <div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  <span class="keywordtype">double</span> total_wt_r = 0.0;</div> |
| <div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  <span class="keywordflow">if</span> (preamble_longs == PREAMBLE_LONGS_FULL) { </div> |
| <div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  total_wt_r = read<double>(is);</div> |
| <div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  <span class="keywordflow">if</span> (std::isnan(total_wt_r) || r == 0 || total_wt_r <= 0.0) {</div> |
| <div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Possible corruption: deserializing in full mode but r = 0 or invalid R weight. "</span></div> |
| <div class="line"><a name="l00594"></a><span class="lineno"> 594</span>  <span class="stringliteral">"Found r = "</span> + std::to_string(r) + <span class="stringliteral">", R region weight = "</span> + std::to_string(total_wt_r));</div> |
| <div class="line"><a name="l00595"></a><span class="lineno"> 595</span>  }</div> |
| <div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  }</div> |
| <div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  </div> |
| <div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  <span class="comment">// read the first h weights, fill remainder with -1.0</span></div> |
| <div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  std::unique_ptr<double, weights_deleter> weights(AllocDouble(allocator).allocate(array_size),</div> |
| <div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  weights_deleter(array_size, allocator));</div> |
| <div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  <span class="keywordtype">double</span>* wts = weights.get(); <span class="comment">// to avoid lots of .get() calls -- do not delete</span></div> |
| <div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  read(is, wts, h * <span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));</div> |
| <div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < h; ++i) {</div> |
| <div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  <span class="keywordflow">if</span> (!(wts[i] > 0.0)) {</div> |
| <div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Possible corruption: Non-positive weight when deserializing: "</span> + std::to_string(wts[i]));</div> |
| <div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  }</div> |
| <div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  }</div> |
| <div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  std::fill(wts + h, wts + array_size, -1.0);</div> |
| <div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  </div> |
| <div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  <span class="comment">// read the first h_ marks as packed bytes iff we have a gadget</span></div> |
| <div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  uint32_t num_marks_in_h = 0;</div> |
| <div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  std::unique_ptr<bool, marks_deleter> marks(<span class="keyword">nullptr</span>, marks_deleter(array_size, allocator));</div> |
| <div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  <span class="keywordflow">if</span> (is_gadget) {</div> |
| <div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  marks = std::unique_ptr<bool, marks_deleter>(AllocBool(allocator).allocate(array_size), marks_deleter(array_size, allocator));</div> |
| <div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  uint8_t val = 0;</div> |
| <div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  <span class="keywordflow">for</span> (uint32_t i = 0; i < h; ++i) {</div> |
| <div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  <span class="keywordflow">if</span> ((i & 0x7) == 0x0) { <span class="comment">// should trigger on first iteration</span></div> |
| <div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  val = read<uint8_t>(is);</div> |
| <div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  }</div> |
| <div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  marks.get()[i] = ((val >> (i & 0x7)) & 0x1) == 1;</div> |
| <div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  num_marks_in_h += (marks.get()[i] ? 1 : 0);</div> |
| <div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  }</div> |
| <div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  }</div> |
| <div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  </div> |
| <div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  <span class="comment">// read the sample items, skipping the gap. Either h or r may be 0</span></div> |
| <div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  items_deleter deleter(array_size, allocator);</div> |
| <div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  std::unique_ptr<T, items_deleter> items(A(allocator).allocate(array_size), deleter);</div> |
| <div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  </div> |
| <div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  sd.deserialize(is, items.get(), h); <span class="comment">// aka &data_[0]</span></div> |
| <div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  items.get_deleter().set_h(h); <span class="comment">// serde didn't throw, so the items are now valid</span></div> |
| <div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  </div> |
| <div class="line"><a name="l00632"></a><span class="lineno"> 632</span>  sd.deserialize(is, &(items.get()[h + 1]), r);</div> |
| <div class="line"><a name="l00633"></a><span class="lineno"> 633</span>  items.get_deleter().set_r(r); <span class="comment">// serde didn't throw, so the items are now valid</span></div> |
| <div class="line"><a name="l00634"></a><span class="lineno"> 634</span>  </div> |
| <div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  <span class="keywordflow">if</span> (!is.good())</div> |
| <div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"error reading from std::istream"</span>); </div> |
| <div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  </div> |
| <div class="line"><a name="l00638"></a><span class="lineno"> 638</span>  <span class="keywordflow">return</span> var_opt_sketch(k, h, (r > 0 ? 1 : 0), r, n, total_wt_r, rf, array_size, <span class="keyword">false</span>,</div> |
| <div class="line"><a name="l00639"></a><span class="lineno"> 639</span>  std::move(items), std::move(weights), num_marks_in_h, std::move(marks), allocator);</div> |
| <div class="line"><a name="l00640"></a><span class="lineno"> 640</span> }</div> |
| <div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  </div> |
| <div class="line"><a name="l00642"></a><span class="lineno"> 642</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00643"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a5a2b7a58dc85678d08752945ff655362"> 643</a></span> <span class="keywordtype">bool</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::is_empty</a>()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  <span class="keywordflow">return</span> (h_ == 0 && r_ == 0);</div> |
| <div class="line"><a name="l00645"></a><span class="lineno"> 645</span> }</div> |
| <div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  </div> |
| <div class="line"><a name="l00647"></a><span class="lineno"> 647</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00648"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#ad20897c5c8bd47f5d4005989bead0e55"> 648</a></span> <span class="keywordtype">void</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::reset</a>() {</div> |
| <div class="line"><a name="l00649"></a><span class="lineno"> 649</span>  <span class="keyword">const</span> uint32_t prev_alloc = curr_items_alloc_;</div> |
| <div class="line"><a name="l00650"></a><span class="lineno"> 650</span>  <span class="keyword">const</span> uint32_t ceiling_lg_k = to_log_2(ceiling_power_of_2(k_));</div> |
| <div class="line"><a name="l00651"></a><span class="lineno"> 651</span>  <span class="keyword">const</span> uint32_t initial_lg_size = starting_sub_multiple(ceiling_lg_k, rf_, MIN_LG_ARR_ITEMS);</div> |
| <div class="line"><a name="l00652"></a><span class="lineno"> 652</span>  curr_items_alloc_ = get_adjusted_size(k_, 1 << initial_lg_size);</div> |
| <div class="line"><a name="l00653"></a><span class="lineno"> 653</span>  <span class="keywordflow">if</span> (curr_items_alloc_ == k_) { <span class="comment">// if full size, need to leave 1 for the gap</span></div> |
| <div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  ++curr_items_alloc_;</div> |
| <div class="line"><a name="l00655"></a><span class="lineno"> 655</span>  }</div> |
| <div class="line"><a name="l00656"></a><span class="lineno"> 656</span>  </div> |
| <div class="line"><a name="l00657"></a><span class="lineno"> 657</span>  <span class="keywordflow">if</span> (filled_data_) {</div> |
| <div class="line"><a name="l00658"></a><span class="lineno"> 658</span>  <span class="comment">// destroy everything</span></div> |
| <div class="line"><a name="l00659"></a><span class="lineno"> 659</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> num_to_destroy = std::min(k_ + 1, prev_alloc);</div> |
| <div class="line"><a name="l00660"></a><span class="lineno"> 660</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < num_to_destroy; ++i) </div> |
| <div class="line"><a name="l00661"></a><span class="lineno"> 661</span>  data_[i].~T();</div> |
| <div class="line"><a name="l00662"></a><span class="lineno"> 662</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00663"></a><span class="lineno"> 663</span>  <span class="comment">// skip gap or anything unused at the end</span></div> |
| <div class="line"><a name="l00664"></a><span class="lineno"> 664</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < h_; ++i)</div> |
| <div class="line"><a name="l00665"></a><span class="lineno"> 665</span>  data_[i].~T();</div> |
| <div class="line"><a name="l00666"></a><span class="lineno"> 666</span>  </div> |
| <div class="line"><a name="l00667"></a><span class="lineno"> 667</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = h_ + 1; i < h_ + r_ + 1; ++i)</div> |
| <div class="line"><a name="l00668"></a><span class="lineno"> 668</span>  data_[i].~T();</div> |
| <div class="line"><a name="l00669"></a><span class="lineno"> 669</span>  }</div> |
| <div class="line"><a name="l00670"></a><span class="lineno"> 670</span>  </div> |
| <div class="line"><a name="l00671"></a><span class="lineno"> 671</span>  <span class="keywordflow">if</span> (curr_items_alloc_ < prev_alloc) {</div> |
| <div class="line"><a name="l00672"></a><span class="lineno"> 672</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> is_gadget = (marks_ != <span class="keyword">nullptr</span>);</div> |
| <div class="line"><a name="l00673"></a><span class="lineno"> 673</span>  </div> |
| <div class="line"><a name="l00674"></a><span class="lineno"> 674</span>  allocator_.deallocate(data_, prev_alloc);</div> |
| <div class="line"><a name="l00675"></a><span class="lineno"> 675</span>  AllocDouble(allocator_).deallocate(weights_, prev_alloc);</div> |
| <div class="line"><a name="l00676"></a><span class="lineno"> 676</span>  </div> |
| <div class="line"><a name="l00677"></a><span class="lineno"> 677</span>  <span class="keywordflow">if</span> (marks_ != <span class="keyword">nullptr</span>)</div> |
| <div class="line"><a name="l00678"></a><span class="lineno"> 678</span>  AllocBool(allocator_).deallocate(marks_, prev_alloc);</div> |
| <div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  </div> |
| <div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  allocate_data_arrays(curr_items_alloc_, is_gadget);</div> |
| <div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  }</div> |
| <div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  </div> |
| <div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  n_ = 0;</div> |
| <div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  h_ = 0;</div> |
| <div class="line"><a name="l00685"></a><span class="lineno"> 685</span>  m_ = 0;</div> |
| <div class="line"><a name="l00686"></a><span class="lineno"> 686</span>  r_ = 0;</div> |
| <div class="line"><a name="l00687"></a><span class="lineno"> 687</span>  num_marks_in_h_ = 0;</div> |
| <div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  total_wt_r_ = 0.0;</div> |
| <div class="line"><a name="l00689"></a><span class="lineno"> 689</span>  filled_data_ = <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00690"></a><span class="lineno"> 690</span> }</div> |
| <div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  </div> |
| <div class="line"><a name="l00692"></a><span class="lineno"> 692</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00693"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#af857be9469a7565252626f27e1f9d74d"> 693</a></span> uint64_t <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::get_n</a>()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00694"></a><span class="lineno"> 694</span>  <span class="keywordflow">return</span> n_;</div> |
| <div class="line"><a name="l00695"></a><span class="lineno"> 695</span> }</div> |
| <div class="line"><a name="l00696"></a><span class="lineno"> 696</span>  </div> |
| <div class="line"><a name="l00697"></a><span class="lineno"> 697</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00698"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#af561f5cd76ff61773713c627bc53b0a2"> 698</a></span> uint32_t <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::get_k</a>()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  <span class="keywordflow">return</span> k_;</div> |
| <div class="line"><a name="l00700"></a><span class="lineno"> 700</span> }</div> |
| <div class="line"><a name="l00701"></a><span class="lineno"> 701</span>  </div> |
| <div class="line"><a name="l00702"></a><span class="lineno"> 702</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00703"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#ac481918ec96d79b27813d32bcc2a247d"> 703</a></span> uint32_t <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::get_num_samples</a>()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  <span class="keyword">const</span> uint32_t num_in_sketch = h_ + r_;</div> |
| <div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  <span class="keywordflow">return</span> (num_in_sketch < k_ ? num_in_sketch : k_);</div> |
| <div class="line"><a name="l00706"></a><span class="lineno"> 706</span> }</div> |
| <div class="line"><a name="l00707"></a><span class="lineno"> 707</span>  </div> |
| <div class="line"><a name="l00708"></a><span class="lineno"> 708</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00709"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a1125ed18baf3f257b5796321c7ec0f8f"> 709</a></span> <span class="keywordtype">void</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::update</a>(<span class="keyword">const</span> T& item, <span class="keywordtype">double</span> weight) {</div> |
| <div class="line"><a name="l00710"></a><span class="lineno"> 710</span>  update(item, weight, <span class="keyword">false</span>);</div> |
| <div class="line"><a name="l00711"></a><span class="lineno"> 711</span> }</div> |
| <div class="line"><a name="l00712"></a><span class="lineno"> 712</span>  </div> |
| <div class="line"><a name="l00713"></a><span class="lineno"> 713</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00714"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a9c07446b1fd8f8509f754ebaf3f77050"> 714</a></span> <span class="keywordtype">void</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::update</a>(T&& item, <span class="keywordtype">double</span> weight) {</div> |
| <div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  update(std::move(item), weight, <span class="keyword">false</span>);</div> |
| <div class="line"><a name="l00716"></a><span class="lineno"> 716</span> }</div> |
| <div class="line"><a name="l00717"></a><span class="lineno"> 717</span>  </div> |
| <div class="line"><a name="l00718"></a><span class="lineno"> 718</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00719"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#aed372241c10ffd041bee85602edb199a"> 719</a></span> string<A> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::to_string</a>()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00720"></a><span class="lineno"> 720</span>  <span class="comment">// Using a temporary stream for implementation here does not comply with AllocatorAwareContainer requirements.</span></div> |
| <div class="line"><a name="l00721"></a><span class="lineno"> 721</span>  <span class="comment">// The stream does not support passing an allocator instance, and alternatives are complicated.</span></div> |
| <div class="line"><a name="l00722"></a><span class="lineno"> 722</span>  std::ostringstream os;</div> |
| <div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  os << <span class="stringliteral">"### VarOpt SUMMARY:"</span> << std::endl;</div> |
| <div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  os << <span class="stringliteral">" k : "</span> << k_ << std::endl;</div> |
| <div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  os << <span class="stringliteral">" h : "</span> << h_ << std::endl;</div> |
| <div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  os << <span class="stringliteral">" r : "</span> << r_ << std::endl;</div> |
| <div class="line"><a name="l00727"></a><span class="lineno"> 727</span>  os << <span class="stringliteral">" weight_r : "</span> << total_wt_r_ << std::endl;</div> |
| <div class="line"><a name="l00728"></a><span class="lineno"> 728</span>  os << <span class="stringliteral">" Current size : "</span> << curr_items_alloc_ << std::endl;</div> |
| <div class="line"><a name="l00729"></a><span class="lineno"> 729</span>  os << <span class="stringliteral">" Resize factor: "</span> << (1 << rf_) << std::endl;</div> |
| <div class="line"><a name="l00730"></a><span class="lineno"> 730</span>  os << <span class="stringliteral">"### END SKETCH SUMMARY"</span> << std::endl;</div> |
| <div class="line"><a name="l00731"></a><span class="lineno"> 731</span>  <span class="keywordflow">return</span> string<A>(os.str().c_str(), allocator_);</div> |
| <div class="line"><a name="l00732"></a><span class="lineno"> 732</span> }</div> |
| <div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  </div> |
| <div class="line"><a name="l00734"></a><span class="lineno"> 734</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00735"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a0fa52dd153f1e3cac57d4742e2fef6fc"> 735</a></span> string<A> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::items_to_string</a>()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  <span class="comment">// Using a temporary stream for implementation here does not comply with AllocatorAwareContainer requirements.</span></div> |
| <div class="line"><a name="l00737"></a><span class="lineno"> 737</span>  <span class="comment">// The stream does not support passing an allocator instance, and alternatives are complicated.</span></div> |
| <div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  std::ostringstream os;</div> |
| <div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  os << <span class="stringliteral">"### Sketch Items"</span> << std::endl;</div> |
| <div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  <span class="keywordtype">int</span> idx = 0;</div> |
| <div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span> record : *<span class="keyword">this</span>) {</div> |
| <div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  os << idx << <span class="stringliteral">": "</span> << record.first << <span class="stringliteral">"\twt = "</span> << record.second << std::endl;</div> |
| <div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  ++idx;</div> |
| <div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  }</div> |
| <div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  <span class="keywordflow">return</span> string<A>(os.str().c_str(), allocator_);</div> |
| <div class="line"><a name="l00746"></a><span class="lineno"> 746</span> }</div> |
| <div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  </div> |
| <div class="line"><a name="l00748"></a><span class="lineno"> 748</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00749"></a><span class="lineno"> 749</span> string<A> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::items_to_string</a>(<span class="keywordtype">bool</span> print_gap)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00750"></a><span class="lineno"> 750</span>  <span class="comment">// Using a temporary stream for implementation here does not comply with AllocatorAwareContainer requirements.</span></div> |
| <div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  <span class="comment">// The stream does not support passing an allocator instance, and alternatives are complicated.</span></div> |
| <div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  std::ostringstream os;</div> |
| <div class="line"><a name="l00753"></a><span class="lineno"> 753</span>  os << <span class="stringliteral">"### Sketch Items"</span> << std::endl;</div> |
| <div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  <span class="keyword">const</span> uint32_t array_length = (n_ < k_ ? n_ : k_ + 1);</div> |
| <div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  <span class="keywordflow">for</span> (uint32_t i = 0, display_idx = 0; i < array_length; ++i) {</div> |
| <div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  <span class="keywordflow">if</span> (i == h_ && print_gap) {</div> |
| <div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  os << display_idx << <span class="stringliteral">": GAP"</span> << std::endl;</div> |
| <div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  ++display_idx;</div> |
| <div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  os << display_idx << <span class="stringliteral">": "</span> << data_[i] << <span class="stringliteral">"\twt = "</span>;</div> |
| <div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  <span class="keywordflow">if</span> (weights_[i] == -1.0) {</div> |
| <div class="line"><a name="l00762"></a><span class="lineno"> 762</span>  os << get_tau() << <span class="stringliteral">"\t(-1.0)"</span> << std::endl;</div> |
| <div class="line"><a name="l00763"></a><span class="lineno"> 763</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00764"></a><span class="lineno"> 764</span>  os << weights_[i] << std::endl;</div> |
| <div class="line"><a name="l00765"></a><span class="lineno"> 765</span>  }</div> |
| <div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  ++display_idx;</div> |
| <div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  }</div> |
| <div class="line"><a name="l00768"></a><span class="lineno"> 768</span>  }</div> |
| <div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  <span class="keywordflow">return</span> string<A>(os.str().c_str(), allocator_);</div> |
| <div class="line"><a name="l00770"></a><span class="lineno"> 770</span> }</div> |
| <div class="line"><a name="l00771"></a><span class="lineno"> 771</span>  </div> |
| <div class="line"><a name="l00772"></a><span class="lineno"> 772</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00773"></a><span class="lineno"> 773</span> <span class="keyword">template</span><<span class="keyword">typename</span> O></div> |
| <div class="line"><a name="l00774"></a><span class="lineno"> 774</span> <span class="keywordtype">void</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html#a1125ed18baf3f257b5796321c7ec0f8f">var_opt_sketch<T, A>::update</a>(O&& item, <span class="keywordtype">double</span> weight, <span class="keywordtype">bool</span> mark) {</div> |
| <div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  <span class="keywordflow">if</span> (weight < 0.0 || std::isnan(weight) || std::isinf(weight)) {</div> |
| <div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Item weights must be nonnegative and finite. Found: "</span></div> |
| <div class="line"><a name="l00777"></a><span class="lineno"> 777</span>  + std::to_string(weight));</div> |
| <div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (weight == 0.0) {</div> |
| <div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00780"></a><span class="lineno"> 780</span>  }</div> |
| <div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  ++n_;</div> |
| <div class="line"><a name="l00782"></a><span class="lineno"> 782</span>  </div> |
| <div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  <span class="keywordflow">if</span> (r_ == 0) {</div> |
| <div class="line"><a name="l00784"></a><span class="lineno"> 784</span>  <span class="comment">// exact mode</span></div> |
| <div class="line"><a name="l00785"></a><span class="lineno"> 785</span>  update_warmup_phase(std::forward<O>(item), weight, mark);</div> |
| <div class="line"><a name="l00786"></a><span class="lineno"> 786</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00787"></a><span class="lineno"> 787</span>  <span class="comment">// sketch is in estimation mode so we can make the following check,</span></div> |
| <div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  <span class="comment">// although very conservative to check every time</span></div> |
| <div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  <span class="keywordflow">if</span> ((h_ != 0) && (peek_min() < get_tau()))</div> |
| <div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"sketch not in valid estimation mode"</span>);</div> |
| <div class="line"><a name="l00791"></a><span class="lineno"> 791</span>  </div> |
| <div class="line"><a name="l00792"></a><span class="lineno"> 792</span>  <span class="comment">// what tau would be if deletion candidates turn out to be R plus the new item</span></div> |
| <div class="line"><a name="l00793"></a><span class="lineno"> 793</span>  <span class="comment">// note: (r_ + 1) - 1 is intentional</span></div> |
| <div class="line"><a name="l00794"></a><span class="lineno"> 794</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> hypothetical_tau = (weight + total_wt_r_) / ((r_ + 1) - 1);</div> |
| <div class="line"><a name="l00795"></a><span class="lineno"> 795</span>  </div> |
| <div class="line"><a name="l00796"></a><span class="lineno"> 796</span>  <span class="comment">// is new item's turn to be considered for reservoir?</span></div> |
| <div class="line"><a name="l00797"></a><span class="lineno"> 797</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> condition1 = (h_ == 0) || (weight <= peek_min());</div> |
| <div class="line"><a name="l00798"></a><span class="lineno"> 798</span>  </div> |
| <div class="line"><a name="l00799"></a><span class="lineno"> 799</span>  <span class="comment">// is new item light enough for reservoir?</span></div> |
| <div class="line"><a name="l00800"></a><span class="lineno"> 800</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> condition2 = weight < hypothetical_tau;</div> |
| <div class="line"><a name="l00801"></a><span class="lineno"> 801</span>  </div> |
| <div class="line"><a name="l00802"></a><span class="lineno"> 802</span>  <span class="keywordflow">if</span> (condition1 && condition2) {</div> |
| <div class="line"><a name="l00803"></a><span class="lineno"> 803</span>  update_light(std::forward<O>(item), weight, mark);</div> |
| <div class="line"><a name="l00804"></a><span class="lineno"> 804</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (r_ == 1) {</div> |
| <div class="line"><a name="l00805"></a><span class="lineno"> 805</span>  update_heavy_r_eq1(std::forward<O>(item), weight, mark);</div> |
| <div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00807"></a><span class="lineno"> 807</span>  update_heavy_general(std::forward<O>(item), weight, mark);</div> |
| <div class="line"><a name="l00808"></a><span class="lineno"> 808</span>  }</div> |
| <div class="line"><a name="l00809"></a><span class="lineno"> 809</span>  }</div> |
| <div class="line"><a name="l00810"></a><span class="lineno"> 810</span> }</div> |
| <div class="line"><a name="l00811"></a><span class="lineno"> 811</span>  </div> |
| <div class="line"><a name="l00812"></a><span class="lineno"> 812</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00813"></a><span class="lineno"> 813</span> <span class="keyword">template</span><<span class="keyword">typename</span> O></div> |
| <div class="line"><a name="l00814"></a><span class="lineno"> 814</span> <span class="keywordtype">void</span> var_opt_sketch<T, A>::update_warmup_phase(O&& item, <span class="keywordtype">double</span> weight, <span class="keywordtype">bool</span> mark) {</div> |
| <div class="line"><a name="l00815"></a><span class="lineno"> 815</span>  <span class="comment">// seems overly cautious</span></div> |
| <div class="line"><a name="l00816"></a><span class="lineno"> 816</span>  <span class="keywordflow">if</span> (r_ > 0 || m_ != 0 || h_ > k_) <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"invalid sketch state during warmup"</span>);</div> |
| <div class="line"><a name="l00817"></a><span class="lineno"> 817</span>  </div> |
| <div class="line"><a name="l00818"></a><span class="lineno"> 818</span>  <span class="keywordflow">if</span> (h_ >= curr_items_alloc_) {</div> |
| <div class="line"><a name="l00819"></a><span class="lineno"> 819</span>  grow_data_arrays();</div> |
| <div class="line"><a name="l00820"></a><span class="lineno"> 820</span>  }</div> |
| <div class="line"><a name="l00821"></a><span class="lineno"> 821</span>  </div> |
| <div class="line"><a name="l00822"></a><span class="lineno"> 822</span>  <span class="comment">// store items as they come in until full</span></div> |
| <div class="line"><a name="l00823"></a><span class="lineno"> 823</span>  <span class="keyword">new</span> (&data_[h_]) T(std::forward<O>(item));</div> |
| <div class="line"><a name="l00824"></a><span class="lineno"> 824</span>  weights_[h_] = weight;</div> |
| <div class="line"><a name="l00825"></a><span class="lineno"> 825</span>  <span class="keywordflow">if</span> (marks_ != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l00826"></a><span class="lineno"> 826</span>  marks_[h_] = mark;</div> |
| <div class="line"><a name="l00827"></a><span class="lineno"> 827</span>  }</div> |
| <div class="line"><a name="l00828"></a><span class="lineno"> 828</span>  ++h_;</div> |
| <div class="line"><a name="l00829"></a><span class="lineno"> 829</span>  num_marks_in_h_ += mark ? 1 : 0;</div> |
| <div class="line"><a name="l00830"></a><span class="lineno"> 830</span>  </div> |
| <div class="line"><a name="l00831"></a><span class="lineno"> 831</span>  <span class="comment">// check if need to heapify</span></div> |
| <div class="line"><a name="l00832"></a><span class="lineno"> 832</span>  <span class="keywordflow">if</span> (h_ > k_) {</div> |
| <div class="line"><a name="l00833"></a><span class="lineno"> 833</span>  filled_data_ = <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00834"></a><span class="lineno"> 834</span>  transition_from_warmup();</div> |
| <div class="line"><a name="l00835"></a><span class="lineno"> 835</span>  }</div> |
| <div class="line"><a name="l00836"></a><span class="lineno"> 836</span> }</div> |
| <div class="line"><a name="l00837"></a><span class="lineno"> 837</span>  </div> |
| <div class="line"><a name="l00838"></a><span class="lineno"> 838</span> <span class="comment">/* In the "light" case the new item has weight <= old_tau, so</span></div> |
| <div class="line"><a name="l00839"></a><span class="lineno"> 839</span> <span class="comment"> would appear to the right of the R items in a hypothetical reverse-sorted</span></div> |
| <div class="line"><a name="l00840"></a><span class="lineno"> 840</span> <span class="comment"> list. It is easy to prove that it is light enough to be part of this</span></div> |
| <div class="line"><a name="l00841"></a><span class="lineno"> 841</span> <span class="comment"> round's downsampling */</span></div> |
| <div class="line"><a name="l00842"></a><span class="lineno"> 842</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00843"></a><span class="lineno"> 843</span> <span class="keyword">template</span><<span class="keyword">typename</span> O></div> |
| <div class="line"><a name="l00844"></a><span class="lineno"> 844</span> <span class="keywordtype">void</span> var_opt_sketch<T, A>::update_light(O&& item, <span class="keywordtype">double</span> weight, <span class="keywordtype">bool</span> mark) {</div> |
| <div class="line"><a name="l00845"></a><span class="lineno"> 845</span>  <span class="keywordflow">if</span> (r_ == 0 || (r_ + h_) != k_) <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"invalid sketch state during light warmup"</span>);</div> |
| <div class="line"><a name="l00846"></a><span class="lineno"> 846</span>  </div> |
| <div class="line"><a name="l00847"></a><span class="lineno"> 847</span>  <span class="keyword">const</span> uint32_t m_slot = h_; <span class="comment">// index of the gap, which becomes the M region</span></div> |
| <div class="line"><a name="l00848"></a><span class="lineno"> 848</span>  <span class="keywordflow">if</span> (filled_data_) {</div> |
| <div class="line"><a name="l00849"></a><span class="lineno"> 849</span>  <span class="keywordflow">if</span> (&data_[m_slot] != &item)</div> |
| <div class="line"><a name="l00850"></a><span class="lineno"> 850</span>  data_[m_slot] = std::forward<O>(item);</div> |
| <div class="line"><a name="l00851"></a><span class="lineno"> 851</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00852"></a><span class="lineno"> 852</span>  <span class="keyword">new</span> (&data_[m_slot]) T(std::forward<O>(item));</div> |
| <div class="line"><a name="l00853"></a><span class="lineno"> 853</span>  filled_data_ = <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00854"></a><span class="lineno"> 854</span>  }</div> |
| <div class="line"><a name="l00855"></a><span class="lineno"> 855</span>  weights_[m_slot] = weight;</div> |
| <div class="line"><a name="l00856"></a><span class="lineno"> 856</span>  <span class="keywordflow">if</span> (marks_ != <span class="keyword">nullptr</span>) { marks_[m_slot] = mark; }</div> |
| <div class="line"><a name="l00857"></a><span class="lineno"> 857</span>  ++m_;</div> |
| <div class="line"><a name="l00858"></a><span class="lineno"> 858</span>  </div> |
| <div class="line"><a name="l00859"></a><span class="lineno"> 859</span>  grow_candidate_set(total_wt_r_ + weight, r_ + 1);</div> |
| <div class="line"><a name="l00860"></a><span class="lineno"> 860</span> }</div> |
| <div class="line"><a name="l00861"></a><span class="lineno"> 861</span>  </div> |
| <div class="line"><a name="l00862"></a><span class="lineno"> 862</span> <span class="comment">/* In the "heavy" case the new item has weight > old_tau, so would</span></div> |
| <div class="line"><a name="l00863"></a><span class="lineno"> 863</span> <span class="comment"> appear to the left of items in R in a hypothetical reverse-sorted list and</span></div> |
| <div class="line"><a name="l00864"></a><span class="lineno"> 864</span> <span class="comment"> might or might not be light enough be part of this round's downsampling.</span></div> |
| <div class="line"><a name="l00865"></a><span class="lineno"> 865</span> <span class="comment"> [After first splitting off the R=1 case] we greatly simplify the code by</span></div> |
| <div class="line"><a name="l00866"></a><span class="lineno"> 866</span> <span class="comment"> putting the new item into the H heap whether it needs to be there or not.</span></div> |
| <div class="line"><a name="l00867"></a><span class="lineno"> 867</span> <span class="comment"> In other words, it might go into the heap and then come right back out,</span></div> |
| <div class="line"><a name="l00868"></a><span class="lineno"> 868</span> <span class="comment"> but that should be okay because pseudo_heavy items cannot predominate</span></div> |
| <div class="line"><a name="l00869"></a><span class="lineno"> 869</span> <span class="comment"> in long streams unless (max wt) / (min wt) > o(exp(N)) */</span></div> |
| <div class="line"><a name="l00870"></a><span class="lineno"> 870</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00871"></a><span class="lineno"> 871</span> <span class="keyword">template</span><<span class="keyword">typename</span> O></div> |
| <div class="line"><a name="l00872"></a><span class="lineno"> 872</span> <span class="keywordtype">void</span> var_opt_sketch<T, A>::update_heavy_general(O&& item, <span class="keywordtype">double</span> weight, <span class="keywordtype">bool</span> mark) {</div> |
| <div class="line"><a name="l00873"></a><span class="lineno"> 873</span>  <span class="keywordflow">if</span> (r_ < 2 || m_ != 0 || (r_ + h_) != k_) <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"invalid sketch state during heavy general update"</span>);</div> |
| <div class="line"><a name="l00874"></a><span class="lineno"> 874</span>  </div> |
| <div class="line"><a name="l00875"></a><span class="lineno"> 875</span>  <span class="comment">// put into H, although may come back out momentarily</span></div> |
| <div class="line"><a name="l00876"></a><span class="lineno"> 876</span>  push(std::forward<O>(item), weight, mark);</div> |
| <div class="line"><a name="l00877"></a><span class="lineno"> 877</span>  </div> |
| <div class="line"><a name="l00878"></a><span class="lineno"> 878</span>  grow_candidate_set(total_wt_r_, r_);</div> |
| <div class="line"><a name="l00879"></a><span class="lineno"> 879</span> }</div> |
| <div class="line"><a name="l00880"></a><span class="lineno"> 880</span>  </div> |
| <div class="line"><a name="l00881"></a><span class="lineno"> 881</span> <span class="comment">/* The analysis of this case is similar to that of the general heavy case.</span></div> |
| <div class="line"><a name="l00882"></a><span class="lineno"> 882</span> <span class="comment"> The one small technical difference is that since R < 2, we must grab an M item</span></div> |
| <div class="line"><a name="l00883"></a><span class="lineno"> 883</span> <span class="comment"> to have a valid starting point for continue_by_growing_candidate_set () */</span></div> |
| <div class="line"><a name="l00884"></a><span class="lineno"> 884</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00885"></a><span class="lineno"> 885</span> <span class="keyword">template</span><<span class="keyword">typename</span> O></div> |
| <div class="line"><a name="l00886"></a><span class="lineno"> 886</span> <span class="keywordtype">void</span> var_opt_sketch<T, A>::update_heavy_r_eq1(O&& item, <span class="keywordtype">double</span> weight, <span class="keywordtype">bool</span> mark) {</div> |
| <div class="line"><a name="l00887"></a><span class="lineno"> 887</span>  <span class="keywordflow">if</span> (r_ != 1 || m_ != 0 || (r_ + h_) != k_) <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"invalid sketch state during heavy r=1 update"</span>);</div> |
| <div class="line"><a name="l00888"></a><span class="lineno"> 888</span>  </div> |
| <div class="line"><a name="l00889"></a><span class="lineno"> 889</span>  push(std::forward<O>(item), weight, mark); <span class="comment">// new item into H</span></div> |
| <div class="line"><a name="l00890"></a><span class="lineno"> 890</span>  pop_min_to_m_region(); <span class="comment">// pop lightest back into M</span></div> |
| <div class="line"><a name="l00891"></a><span class="lineno"> 891</span>  </div> |
| <div class="line"><a name="l00892"></a><span class="lineno"> 892</span>  <span class="comment">// Any set of two items is downsample-able to one item,</span></div> |
| <div class="line"><a name="l00893"></a><span class="lineno"> 893</span>  <span class="comment">// so the two lightest items are a valid starting point for the following</span></div> |
| <div class="line"><a name="l00894"></a><span class="lineno"> 894</span>  <span class="keyword">const</span> uint32_t m_slot = k_ - 1; <span class="comment">// array is k+1, 1 in R, so slot before is M</span></div> |
| <div class="line"><a name="l00895"></a><span class="lineno"> 895</span>  grow_candidate_set(weights_[m_slot] + total_wt_r_, 2);</div> |
| <div class="line"><a name="l00896"></a><span class="lineno"> 896</span> }</div> |
| <div class="line"><a name="l00897"></a><span class="lineno"> 897</span>  </div> |
| <div class="line"><a name="l00898"></a><span class="lineno"> 898</span> <span class="comment">/*</span></div> |
| <div class="line"><a name="l00899"></a><span class="lineno"> 899</span> <span class="comment"> * Decreases sketch's value of k by 1, updating stored values as needed.</span></div> |
| <div class="line"><a name="l00900"></a><span class="lineno"> 900</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00901"></a><span class="lineno"> 901</span> <span class="comment"> * <p>Subject to certain pre-conditions, decreasing k causes tau to increase. This fact is used by</span></div> |
| <div class="line"><a name="l00902"></a><span class="lineno"> 902</span> <span class="comment"> * the unioning algorithm to force "marked" items out of H and into the reservoir region.</p></span></div> |
| <div class="line"><a name="l00903"></a><span class="lineno"> 903</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00904"></a><span class="lineno"> 904</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00905"></a><span class="lineno"> 905</span> <span class="keywordtype">void</span> var_opt_sketch<T, A>::decrease_k_by_1() {</div> |
| <div class="line"><a name="l00906"></a><span class="lineno"> 906</span>  <span class="keywordflow">if</span> (k_ <= 1) {</div> |
| <div class="line"><a name="l00907"></a><span class="lineno"> 907</span>  <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"Cannot decrease k below 1 in union"</span>);</div> |
| <div class="line"><a name="l00908"></a><span class="lineno"> 908</span>  }</div> |
| <div class="line"><a name="l00909"></a><span class="lineno"> 909</span>  </div> |
| <div class="line"><a name="l00910"></a><span class="lineno"> 910</span>  <span class="keywordflow">if</span> ((h_ == 0) && (r_ == 0)) {</div> |
| <div class="line"><a name="l00911"></a><span class="lineno"> 911</span>  <span class="comment">// exact mode, but no data yet; this reduction is somewhat gratuitous</span></div> |
| <div class="line"><a name="l00912"></a><span class="lineno"> 912</span>  --k_;</div> |
| <div class="line"><a name="l00913"></a><span class="lineno"> 913</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((h_ > 0) && (r_ == 0)) {</div> |
| <div class="line"><a name="l00914"></a><span class="lineno"> 914</span>  <span class="comment">// exact mode, but we have some data</span></div> |
| <div class="line"><a name="l00915"></a><span class="lineno"> 915</span>  --k_;</div> |
| <div class="line"><a name="l00916"></a><span class="lineno"> 916</span>  <span class="keywordflow">if</span> (h_ > k_) {</div> |
| <div class="line"><a name="l00917"></a><span class="lineno"> 917</span>  transition_from_warmup();</div> |
| <div class="line"><a name="l00918"></a><span class="lineno"> 918</span>  }</div> |
| <div class="line"><a name="l00919"></a><span class="lineno"> 919</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((h_ > 0) && (r_ > 0)) {</div> |
| <div class="line"><a name="l00920"></a><span class="lineno"> 920</span>  <span class="comment">// reservoir mode, but we have some exact samples.</span></div> |
| <div class="line"><a name="l00921"></a><span class="lineno"> 921</span>  <span class="comment">// Our strategy will be to pull an item out of H (which we are allowed to do since it's</span></div> |
| <div class="line"><a name="l00922"></a><span class="lineno"> 922</span>  <span class="comment">// still just data), reduce k, and then re-insert the item</span></div> |
| <div class="line"><a name="l00923"></a><span class="lineno"> 923</span>  </div> |
| <div class="line"><a name="l00924"></a><span class="lineno"> 924</span>  <span class="comment">// first, slide the R zone to the left by 1, temporarily filling the gap</span></div> |
| <div class="line"><a name="l00925"></a><span class="lineno"> 925</span>  <span class="keyword">const</span> uint32_t old_gap_idx = h_;</div> |
| <div class="line"><a name="l00926"></a><span class="lineno"> 926</span>  <span class="keyword">const</span> uint32_t old_final_r_idx = (h_ + 1 + r_) - 1;</div> |
| <div class="line"><a name="l00927"></a><span class="lineno"> 927</span>  <span class="keywordflow">if</span> (old_final_r_idx != k_) <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"gadget in invalid state"</span>);</div> |
| <div class="line"><a name="l00928"></a><span class="lineno"> 928</span>  </div> |
| <div class="line"><a name="l00929"></a><span class="lineno"> 929</span>  swap_values(old_final_r_idx, old_gap_idx);</div> |
| <div class="line"><a name="l00930"></a><span class="lineno"> 930</span>  filled_data_ = <span class="keyword">true</span>; <span class="comment">// we just filled the gap, and no need to check previous state</span></div> |
| <div class="line"><a name="l00931"></a><span class="lineno"> 931</span>  </div> |
| <div class="line"><a name="l00932"></a><span class="lineno"> 932</span>  <span class="comment">// now we pull an item out of H; any item is ok, but if we grab the rightmost and then</span></div> |
| <div class="line"><a name="l00933"></a><span class="lineno"> 933</span>  <span class="comment">// reduce h_, the heap invariant will be preserved (and the gap will be restored), plus</span></div> |
| <div class="line"><a name="l00934"></a><span class="lineno"> 934</span>  <span class="comment">// the push() of the item that will probably happen later will be cheap.</span></div> |
| <div class="line"><a name="l00935"></a><span class="lineno"> 935</span>  </div> |
| <div class="line"><a name="l00936"></a><span class="lineno"> 936</span>  <span class="keyword">const</span> uint32_t pulled_idx = h_ - 1;</div> |
| <div class="line"><a name="l00937"></a><span class="lineno"> 937</span>  <span class="keywordtype">double</span> pulled_weight = weights_[pulled_idx];</div> |
| <div class="line"><a name="l00938"></a><span class="lineno"> 938</span>  <span class="keywordtype">bool</span> pulled_mark = marks_[pulled_idx];</div> |
| <div class="line"><a name="l00939"></a><span class="lineno"> 939</span>  <span class="comment">// will move the pulled item below; don't do antying to it here</span></div> |
| <div class="line"><a name="l00940"></a><span class="lineno"> 940</span>  </div> |
| <div class="line"><a name="l00941"></a><span class="lineno"> 941</span>  <span class="keywordflow">if</span> (pulled_mark) { --num_marks_in_h_; }</div> |
| <div class="line"><a name="l00942"></a><span class="lineno"> 942</span>  weights_[pulled_idx] = -1.0; <span class="comment">// to make bugs easier to spot</span></div> |
| <div class="line"><a name="l00943"></a><span class="lineno"> 943</span>  </div> |
| <div class="line"><a name="l00944"></a><span class="lineno"> 944</span>  --h_;</div> |
| <div class="line"><a name="l00945"></a><span class="lineno"> 945</span>  --k_;</div> |
| <div class="line"><a name="l00946"></a><span class="lineno"> 946</span>  --n_; <span class="comment">// will be re-incremented with the update</span></div> |
| <div class="line"><a name="l00947"></a><span class="lineno"> 947</span>  </div> |
| <div class="line"><a name="l00948"></a><span class="lineno"> 948</span>  update(std::move(data_[pulled_idx]), pulled_weight, pulled_mark);</div> |
| <div class="line"><a name="l00949"></a><span class="lineno"> 949</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((h_ == 0) && (r_ > 0)) {</div> |
| <div class="line"><a name="l00950"></a><span class="lineno"> 950</span>  <span class="comment">// pure reservoir mode, so can simply eject a randomly chosen sample from the reservoir</span></div> |
| <div class="line"><a name="l00951"></a><span class="lineno"> 951</span>  <span class="keywordflow">if</span> (r_ < 2) <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"r_ too small for pure reservoir mode"</span>);</div> |
| <div class="line"><a name="l00952"></a><span class="lineno"> 952</span>  </div> |
| <div class="line"><a name="l00953"></a><span class="lineno"> 953</span>  <span class="keyword">const</span> uint32_t r_idx_to_delete = 1 + next_int(r_); <span class="comment">// 1 for the gap</span></div> |
| <div class="line"><a name="l00954"></a><span class="lineno"> 954</span>  <span class="keyword">const</span> uint32_t rightmost_r_idx = (1 + r_) - 1;</div> |
| <div class="line"><a name="l00955"></a><span class="lineno"> 955</span>  swap_values(r_idx_to_delete, rightmost_r_idx);</div> |
| <div class="line"><a name="l00956"></a><span class="lineno"> 956</span>  weights_[rightmost_r_idx] = -1.0;</div> |
| <div class="line"><a name="l00957"></a><span class="lineno"> 957</span>  </div> |
| <div class="line"><a name="l00958"></a><span class="lineno"> 958</span>  --k_;</div> |
| <div class="line"><a name="l00959"></a><span class="lineno"> 959</span>  --r_;</div> |
| <div class="line"><a name="l00960"></a><span class="lineno"> 960</span>  }</div> |
| <div class="line"><a name="l00961"></a><span class="lineno"> 961</span> }</div> |
| <div class="line"><a name="l00962"></a><span class="lineno"> 962</span>  </div> |
| <div class="line"><a name="l00963"></a><span class="lineno"> 963</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00964"></a><span class="lineno"> 964</span> <span class="keywordtype">void</span> var_opt_sketch<T, A>::allocate_data_arrays(uint32_t tgt_size, <span class="keywordtype">bool</span> use_marks) {</div> |
| <div class="line"><a name="l00965"></a><span class="lineno"> 965</span>  filled_data_ = <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00966"></a><span class="lineno"> 966</span>  </div> |
| <div class="line"><a name="l00967"></a><span class="lineno"> 967</span>  data_ = allocator_.allocate(tgt_size);</div> |
| <div class="line"><a name="l00968"></a><span class="lineno"> 968</span>  weights_ = AllocDouble(allocator_).allocate(tgt_size);</div> |
| <div class="line"><a name="l00969"></a><span class="lineno"> 969</span>  </div> |
| <div class="line"><a name="l00970"></a><span class="lineno"> 970</span>  <span class="keywordflow">if</span> (use_marks) {</div> |
| <div class="line"><a name="l00971"></a><span class="lineno"> 971</span>  marks_ = AllocBool(allocator_).allocate(tgt_size);</div> |
| <div class="line"><a name="l00972"></a><span class="lineno"> 972</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00973"></a><span class="lineno"> 973</span>  marks_ = <span class="keyword">nullptr</span>;</div> |
| <div class="line"><a name="l00974"></a><span class="lineno"> 974</span>  }</div> |
| <div class="line"><a name="l00975"></a><span class="lineno"> 975</span> }</div> |
| <div class="line"><a name="l00976"></a><span class="lineno"> 976</span>  </div> |
| <div class="line"><a name="l00977"></a><span class="lineno"> 977</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00978"></a><span class="lineno"> 978</span> <span class="keywordtype">void</span> var_opt_sketch<T, A>::grow_data_arrays() {</div> |
| <div class="line"><a name="l00979"></a><span class="lineno"> 979</span>  <span class="keyword">const</span> uint32_t prev_size = curr_items_alloc_;</div> |
| <div class="line"><a name="l00980"></a><span class="lineno"> 980</span>  curr_items_alloc_ = get_adjusted_size(k_, curr_items_alloc_ << rf_);</div> |
| <div class="line"><a name="l00981"></a><span class="lineno"> 981</span>  <span class="keywordflow">if</span> (curr_items_alloc_ == k_) {</div> |
| <div class="line"><a name="l00982"></a><span class="lineno"> 982</span>  ++curr_items_alloc_;</div> |
| <div class="line"><a name="l00983"></a><span class="lineno"> 983</span>  }</div> |
| <div class="line"><a name="l00984"></a><span class="lineno"> 984</span>  </div> |
| <div class="line"><a name="l00985"></a><span class="lineno"> 985</span>  <span class="keywordflow">if</span> (prev_size < curr_items_alloc_) {</div> |
| <div class="line"><a name="l00986"></a><span class="lineno"> 986</span>  filled_data_ = <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00987"></a><span class="lineno"> 987</span>  </div> |
| <div class="line"><a name="l00988"></a><span class="lineno"> 988</span>  T* tmp_data = allocator_.allocate(curr_items_alloc_);</div> |
| <div class="line"><a name="l00989"></a><span class="lineno"> 989</span>  <span class="keywordtype">double</span>* tmp_weights = AllocDouble(allocator_).allocate(curr_items_alloc_);</div> |
| <div class="line"><a name="l00990"></a><span class="lineno"> 990</span>  </div> |
| <div class="line"><a name="l00991"></a><span class="lineno"> 991</span>  <span class="keywordflow">for</span> (uint32_t i = 0; i < prev_size; ++i) {</div> |
| <div class="line"><a name="l00992"></a><span class="lineno"> 992</span>  <span class="keyword">new</span> (&tmp_data[i]) T(std::move(data_[i]));</div> |
| <div class="line"><a name="l00993"></a><span class="lineno"> 993</span>  data_[i].~T();</div> |
| <div class="line"><a name="l00994"></a><span class="lineno"> 994</span>  tmp_weights[i] = weights_[i];</div> |
| <div class="line"><a name="l00995"></a><span class="lineno"> 995</span>  }</div> |
| <div class="line"><a name="l00996"></a><span class="lineno"> 996</span>  </div> |
| <div class="line"><a name="l00997"></a><span class="lineno"> 997</span>  allocator_.deallocate(data_, prev_size);</div> |
| <div class="line"><a name="l00998"></a><span class="lineno"> 998</span>  AllocDouble(allocator_).deallocate(weights_, prev_size);</div> |
| <div class="line"><a name="l00999"></a><span class="lineno"> 999</span>  </div> |
| <div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>  data_ = tmp_data;</div> |
| <div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>  weights_ = tmp_weights;</div> |
| <div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>  </div> |
| <div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>  <span class="keywordflow">if</span> (marks_ != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>  <span class="keywordtype">bool</span>* tmp_marks = AllocBool(allocator_).allocate(curr_items_alloc_);</div> |
| <div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>  <span class="keywordflow">for</span> (uint32_t i = 0; i < prev_size; ++i) {</div> |
| <div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>  tmp_marks[i] = marks_[i];</div> |
| <div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>  }</div> |
| <div class="line"><a name="l01008"></a><span class="lineno"> 1008</span>  AllocBool(allocator_).deallocate(marks_, prev_size);</div> |
| <div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>  marks_ = tmp_marks;</div> |
| <div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>  }</div> |
| <div class="line"><a name="l01011"></a><span class="lineno"> 1011</span>  }</div> |
| <div class="line"><a name="l01012"></a><span class="lineno"> 1012</span> }</div> |
| <div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>  </div> |
| <div class="line"><a name="l01014"></a><span class="lineno"> 1014</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01015"></a><span class="lineno"> 1015</span> <span class="keywordtype">void</span> var_opt_sketch<T, A>::transition_from_warmup() {</div> |
| <div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>  <span class="comment">// Move the 2 lightest items from H to M</span></div> |
| <div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>  <span class="comment">// But the lighter really belongs in R, so update counts to reflect that</span></div> |
| <div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>  convert_to_heap();</div> |
| <div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>  pop_min_to_m_region();</div> |
| <div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>  pop_min_to_m_region();</div> |
| <div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>  --m_;</div> |
| <div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>  ++r_;</div> |
| <div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>  </div> |
| <div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>  <span class="keywordflow">if</span> (h_ != (k_ -1) || m_ != 1 || r_ != 1)</div> |
| <div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>  <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"invalid state for transitioning from warmup"</span>);</div> |
| <div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>  </div> |
| <div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>  <span class="comment">// Update total weight in R and then, having grabbed the value, overwrite</span></div> |
| <div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>  <span class="comment">// in weight_ array to help make bugs more obvious</span></div> |
| <div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>  total_wt_r_ = weights_[k_]; <span class="comment">// only one item, known location</span></div> |
| <div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>  weights_[k_] = -1.0;</div> |
| <div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>  </div> |
| <div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>  <span class="comment">// The two lightest items are ncessarily downsample-able to one item,</span></div> |
| <div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>  <span class="comment">// and are therefore a valid initial candidate set</span></div> |
| <div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>  grow_candidate_set(weights_[k_ - 1] + total_wt_r_, 2);</div> |
| <div class="line"><a name="l01035"></a><span class="lineno"> 1035</span> }</div> |
| <div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>  </div> |
| <div class="line"><a name="l01037"></a><span class="lineno"> 1037</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01038"></a><span class="lineno"> 1038</span> <span class="keywordtype">void</span> var_opt_sketch<T, A>::convert_to_heap() {</div> |
| <div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>  <span class="keywordflow">if</span> (h_ < 2) {</div> |
| <div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>  <span class="keywordflow">return</span>; <span class="comment">// nothing to do</span></div> |
| <div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>  }</div> |
| <div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>  </div> |
| <div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>  <span class="keyword">const</span> uint32_t last_slot = h_ - 1;</div> |
| <div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> last_non_leaf = ((last_slot + 1) / 2) - 1;</div> |
| <div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>  </div> |
| <div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = last_non_leaf; j >= 0; --j) {</div> |
| <div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>  restore_towards_leaves(j);</div> |
| <div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>  }</div> |
| <div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>  </div> |
| <div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>  <span class="comment">// validates heap, used for initial debugging</span></div> |
| <div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>  <span class="comment">//for (uint32_t j = h_ - 1; j >= 1; --j) {</span></div> |
| <div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>  <span class="comment">// uint32_t p = ((j + 1) / 2) - 1;</span></div> |
| <div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>  <span class="comment">// if (weights_[p] > weights_[j]) throw std::logic_error("invalid heap");</span></div> |
| <div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>  <span class="comment">//}</span></div> |
| <div class="line"><a name="l01055"></a><span class="lineno"> 1055</span> }</div> |
| <div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>  </div> |
| <div class="line"><a name="l01057"></a><span class="lineno"> 1057</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01058"></a><span class="lineno"> 1058</span> <span class="keywordtype">void</span> var_opt_sketch<T, A>::restore_towards_leaves(uint32_t slot_in) {</div> |
| <div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>  <span class="keyword">const</span> uint32_t last_slot = h_ - 1;</div> |
| <div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>  <span class="keywordflow">if</span> (h_ == 0 || slot_in > last_slot) <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"invalid heap state"</span>);</div> |
| <div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>  </div> |
| <div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>  uint32_t slot = slot_in;</div> |
| <div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>  uint32_t child = (2 * slot_in) + 1; <span class="comment">// might be invalid, need to check</span></div> |
| <div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>  </div> |
| <div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>  <span class="keywordflow">while</span> (child <= last_slot) {</div> |
| <div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>  uint32_t child2 = child + 1; <span class="comment">// might also be invalid</span></div> |
| <div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>  <span class="keywordflow">if</span> ((child2 <= last_slot) && (weights_[child2] < weights_[child])) {</div> |
| <div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>  <span class="comment">// siwtch to other child if it's both valid and smaller</span></div> |
| <div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>  child = child2;</div> |
| <div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>  }</div> |
| <div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>  </div> |
| <div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>  <span class="keywordflow">if</span> (weights_[slot] <= weights_[child]) {</div> |
| <div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>  <span class="comment">// invariant holds so we're done</span></div> |
| <div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>  <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>  }</div> |
| <div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>  </div> |
| <div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>  <span class="comment">// swap and continue</span></div> |
| <div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>  swap_values(slot, child);</div> |
| <div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>  </div> |
| <div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>  slot = child;</div> |
| <div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>  child = (2 * slot) + 1; <span class="comment">// might be invalid, checked on next loop</span></div> |
| <div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>  }</div> |
| <div class="line"><a name="l01083"></a><span class="lineno"> 1083</span> }</div> |
| <div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>  </div> |
| <div class="line"><a name="l01085"></a><span class="lineno"> 1085</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01086"></a><span class="lineno"> 1086</span> <span class="keywordtype">void</span> var_opt_sketch<T, A>::restore_towards_root(uint32_t slot_in) {</div> |
| <div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>  uint32_t slot = slot_in;</div> |
| <div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>  uint32_t p = (((slot + 1) / 2) - 1); <span class="comment">// valid if slot >= 1</span></div> |
| <div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>  <span class="keywordflow">while</span> ((slot > 0) && (weights_[slot] < weights_[p])) {</div> |
| <div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>  swap_values(slot, p);</div> |
| <div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>  slot = p;</div> |
| <div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>  p = (((slot + 1) / 2) - 1); <span class="comment">// valid if slot >= 1</span></div> |
| <div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>  }</div> |
| <div class="line"><a name="l01094"></a><span class="lineno"> 1094</span> }</div> |
| <div class="line"><a name="l01095"></a><span class="lineno"> 1095</span>  </div> |
| <div class="line"><a name="l01096"></a><span class="lineno"> 1096</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01097"></a><span class="lineno"> 1097</span> <span class="keyword">template</span><<span class="keyword">typename</span> O></div> |
| <div class="line"><a name="l01098"></a><span class="lineno"> 1098</span> <span class="keywordtype">void</span> var_opt_sketch<T, A>::push(O&& item, <span class="keywordtype">double</span> wt, <span class="keywordtype">bool</span> mark) {</div> |
| <div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>  <span class="keywordflow">if</span> (filled_data_) {</div> |
| <div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>  <span class="keywordflow">if</span> (&data_[h_] != &item)</div> |
| <div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>  data_[h_] = std::forward<O>(item);</div> |
| <div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>  <span class="keyword">new</span> (&data_[h_]) T(std::forward<O>(item));</div> |
| <div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>  filled_data_ = <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>  }</div> |
| <div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>  weights_[h_] = wt;</div> |
| <div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>  <span class="keywordflow">if</span> (marks_ != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>  marks_[h_] = mark;</div> |
| <div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>  num_marks_in_h_ += (mark ? 1 : 0);</div> |
| <div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>  }</div> |
| <div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>  ++h_;</div> |
| <div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>  </div> |
| <div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>  restore_towards_root(h_ - 1); <span class="comment">// need use old h_, but want accurate h_</span></div> |
| <div class="line"><a name="l01114"></a><span class="lineno"> 1114</span> }</div> |
| <div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>  </div> |
| <div class="line"><a name="l01116"></a><span class="lineno"> 1116</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01117"></a><span class="lineno"> 1117</span> <span class="keywordtype">void</span> var_opt_sketch<T, A>::pop_min_to_m_region() {</div> |
| <div class="line"><a name="l01118"></a><span class="lineno"> 1118</span>  <span class="keywordflow">if</span> (h_ == 0 || (h_ + m_ + r_ != k_ + 1))</div> |
| <div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>  <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"invalid heap state popping min to M region"</span>);</div> |
| <div class="line"><a name="l01120"></a><span class="lineno"> 1120</span>  </div> |
| <div class="line"><a name="l01121"></a><span class="lineno"> 1121</span>  <span class="keywordflow">if</span> (h_ == 1) {</div> |
| <div class="line"><a name="l01122"></a><span class="lineno"> 1122</span>  <span class="comment">// just update bookkeeping</span></div> |
| <div class="line"><a name="l01123"></a><span class="lineno"> 1123</span>  ++m_;</div> |
| <div class="line"><a name="l01124"></a><span class="lineno"> 1124</span>  --h_;</div> |
| <div class="line"><a name="l01125"></a><span class="lineno"> 1125</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>  <span class="comment">// main case</span></div> |
| <div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>  uint32_t tgt = h_ - 1; <span class="comment">// last slot, will swap with root</span></div> |
| <div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>  swap_values(0, tgt);</div> |
| <div class="line"><a name="l01129"></a><span class="lineno"> 1129</span>  ++m_;</div> |
| <div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>  --h_;</div> |
| <div class="line"><a name="l01131"></a><span class="lineno"> 1131</span>  </div> |
| <div class="line"><a name="l01132"></a><span class="lineno"> 1132</span>  restore_towards_leaves(0);</div> |
| <div class="line"><a name="l01133"></a><span class="lineno"> 1133</span>  }</div> |
| <div class="line"><a name="l01134"></a><span class="lineno"> 1134</span>  </div> |
| <div class="line"><a name="l01135"></a><span class="lineno"> 1135</span>  <span class="keywordflow">if</span> (is_marked(h_)) {</div> |
| <div class="line"><a name="l01136"></a><span class="lineno"> 1136</span>  --num_marks_in_h_;</div> |
| <div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>  }</div> |
| <div class="line"><a name="l01138"></a><span class="lineno"> 1138</span> }</div> |
| <div class="line"><a name="l01139"></a><span class="lineno"> 1139</span>  </div> |
| <div class="line"><a name="l01140"></a><span class="lineno"> 1140</span>  </div> |
| <div class="line"><a name="l01141"></a><span class="lineno"> 1141</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01142"></a><span class="lineno"> 1142</span> <span class="keywordtype">void</span> var_opt_sketch<T, A>::swap_values(uint32_t src, uint32_t dst) {</div> |
| <div class="line"><a name="l01143"></a><span class="lineno"> 1143</span>  std::swap(data_[src], data_[dst]);</div> |
| <div class="line"><a name="l01144"></a><span class="lineno"> 1144</span>  std::swap(weights_[src], weights_[dst]);</div> |
| <div class="line"><a name="l01145"></a><span class="lineno"> 1145</span>  </div> |
| <div class="line"><a name="l01146"></a><span class="lineno"> 1146</span>  <span class="keywordflow">if</span> (marks_ != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l01147"></a><span class="lineno"> 1147</span>  std::swap(marks_[src], marks_[dst]);</div> |
| <div class="line"><a name="l01148"></a><span class="lineno"> 1148</span>  }</div> |
| <div class="line"><a name="l01149"></a><span class="lineno"> 1149</span> }</div> |
| <div class="line"><a name="l01150"></a><span class="lineno"> 1150</span>  </div> |
| <div class="line"><a name="l01151"></a><span class="lineno"> 1151</span> <span class="comment">/* When entering here we should be in a well-characterized state where the</span></div> |
| <div class="line"><a name="l01152"></a><span class="lineno"> 1152</span> <span class="comment"> new item has been placed in either h or m and we have a valid but not necessarily</span></div> |
| <div class="line"><a name="l01153"></a><span class="lineno"> 1153</span> <span class="comment"> maximal sampling plan figured out. The array is completely full at this point.</span></div> |
| <div class="line"><a name="l01154"></a><span class="lineno"> 1154</span> <span class="comment"> Everyone in h and m has an explicit weight. The candidates are right-justified</span></div> |
| <div class="line"><a name="l01155"></a><span class="lineno"> 1155</span> <span class="comment"> and are either just the r set or the r set + exactly one m item. The number</span></div> |
| <div class="line"><a name="l01156"></a><span class="lineno"> 1156</span> <span class="comment"> of cands is at least 2. We will now grow the candidate set as much as possible</span></div> |
| <div class="line"><a name="l01157"></a><span class="lineno"> 1157</span> <span class="comment"> by pulling sufficiently light items from h to m.</span></div> |
| <div class="line"><a name="l01158"></a><span class="lineno"> 1158</span> <span class="comment">*/</span></div> |
| <div class="line"><a name="l01159"></a><span class="lineno"> 1159</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01160"></a><span class="lineno"> 1160</span> <span class="keywordtype">void</span> var_opt_sketch<T, A>::grow_candidate_set(<span class="keywordtype">double</span> wt_cands, uint32_t num_cands) {</div> |
| <div class="line"><a name="l01161"></a><span class="lineno"> 1161</span>  <span class="keywordflow">if</span> ((h_ + m_ + r_ != k_ + 1) || (num_cands < 1) || (num_cands != m_ + r_) || (m_ >= 2))</div> |
| <div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>  <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"invariant violated when growing candidate set"</span>);</div> |
| <div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>  </div> |
| <div class="line"><a name="l01164"></a><span class="lineno"> 1164</span>  <span class="keywordflow">while</span> (h_ > 0) {</div> |
| <div class="line"><a name="l01165"></a><span class="lineno"> 1165</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> next_wt = peek_min();</div> |
| <div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> next_tot_wt = wt_cands + next_wt;</div> |
| <div class="line"><a name="l01167"></a><span class="lineno"> 1167</span>  </div> |
| <div class="line"><a name="l01168"></a><span class="lineno"> 1168</span>  <span class="comment">// test for strict lightness of next prospect (denominator multiplied through)</span></div> |
| <div class="line"><a name="l01169"></a><span class="lineno"> 1169</span>  <span class="comment">// ideally: (next_wt * (next_num_cands-1) < next_tot_wt)</span></div> |
| <div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>  <span class="comment">// but can use num_cands directly</span></div> |
| <div class="line"><a name="l01171"></a><span class="lineno"> 1171</span>  <span class="keywordflow">if</span> ((next_wt * num_cands) < next_tot_wt) {</div> |
| <div class="line"><a name="l01172"></a><span class="lineno"> 1172</span>  wt_cands = next_tot_wt;</div> |
| <div class="line"><a name="l01173"></a><span class="lineno"> 1173</span>  ++num_cands;</div> |
| <div class="line"><a name="l01174"></a><span class="lineno"> 1174</span>  pop_min_to_m_region(); <span class="comment">// adjusts h_ and m_</span></div> |
| <div class="line"><a name="l01175"></a><span class="lineno"> 1175</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l01176"></a><span class="lineno"> 1176</span>  <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l01177"></a><span class="lineno"> 1177</span>  }</div> |
| <div class="line"><a name="l01178"></a><span class="lineno"> 1178</span>  }</div> |
| <div class="line"><a name="l01179"></a><span class="lineno"> 1179</span>  </div> |
| <div class="line"><a name="l01180"></a><span class="lineno"> 1180</span>  downsample_candidate_set(wt_cands, num_cands);</div> |
| <div class="line"><a name="l01181"></a><span class="lineno"> 1181</span> }</div> |
| <div class="line"><a name="l01182"></a><span class="lineno"> 1182</span>  </div> |
| <div class="line"><a name="l01183"></a><span class="lineno"> 1183</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01184"></a><span class="lineno"> 1184</span> <span class="keywordtype">void</span> var_opt_sketch<T, A>::downsample_candidate_set(<span class="keywordtype">double</span> wt_cands, uint32_t num_cands) {</div> |
| <div class="line"><a name="l01185"></a><span class="lineno"> 1185</span>  <span class="keywordflow">if</span> (num_cands < 2 || h_ + num_cands != k_ + 1)</div> |
| <div class="line"><a name="l01186"></a><span class="lineno"> 1186</span>  <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"invalid num_cands when downsampling"</span>);</div> |
| <div class="line"><a name="l01187"></a><span class="lineno"> 1187</span>  </div> |
| <div class="line"><a name="l01188"></a><span class="lineno"> 1188</span>  <span class="comment">// need this before overwriting anything</span></div> |
| <div class="line"><a name="l01189"></a><span class="lineno"> 1189</span>  <span class="keyword">const</span> uint32_t delete_slot = choose_delete_slot(wt_cands, num_cands);</div> |
| <div class="line"><a name="l01190"></a><span class="lineno"> 1190</span>  <span class="keyword">const</span> uint32_t leftmost_cand_slot = h_;</div> |
| <div class="line"><a name="l01191"></a><span class="lineno"> 1191</span>  <span class="keywordflow">if</span> (delete_slot < leftmost_cand_slot || delete_slot > k_)</div> |
| <div class="line"><a name="l01192"></a><span class="lineno"> 1192</span>  <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"invalid delete slot index when downsampling"</span>);</div> |
| <div class="line"><a name="l01193"></a><span class="lineno"> 1193</span>  </div> |
| <div class="line"><a name="l01194"></a><span class="lineno"> 1194</span>  <span class="comment">// Overwrite weights for items from M moving into R,</span></div> |
| <div class="line"><a name="l01195"></a><span class="lineno"> 1195</span>  <span class="comment">// to make bugs more obvious. Also needed so anyone reading the</span></div> |
| <div class="line"><a name="l01196"></a><span class="lineno"> 1196</span>  <span class="comment">// weight knows if it's invalid without checking h_ and m_</span></div> |
| <div class="line"><a name="l01197"></a><span class="lineno"> 1197</span>  <span class="keyword">const</span> uint32_t stop_idx = leftmost_cand_slot + m_;</div> |
| <div class="line"><a name="l01198"></a><span class="lineno"> 1198</span>  <span class="keywordflow">for</span> (uint32_t j = leftmost_cand_slot; j < stop_idx; ++j) {</div> |
| <div class="line"><a name="l01199"></a><span class="lineno"> 1199</span>  weights_[j] = -1.0;</div> |
| <div class="line"><a name="l01200"></a><span class="lineno"> 1200</span>  }</div> |
| <div class="line"><a name="l01201"></a><span class="lineno"> 1201</span>  </div> |
| <div class="line"><a name="l01202"></a><span class="lineno"> 1202</span>  <span class="comment">// The next line works even when delete_slot == leftmost_cand_slot</span></div> |
| <div class="line"><a name="l01203"></a><span class="lineno"> 1203</span>  data_[delete_slot] = std::move(data_[leftmost_cand_slot]);</div> |
| <div class="line"><a name="l01204"></a><span class="lineno"> 1204</span>  </div> |
| <div class="line"><a name="l01205"></a><span class="lineno"> 1205</span>  m_ = 0;</div> |
| <div class="line"><a name="l01206"></a><span class="lineno"> 1206</span>  r_ = num_cands - 1;</div> |
| <div class="line"><a name="l01207"></a><span class="lineno"> 1207</span>  total_wt_r_ = wt_cands;</div> |
| <div class="line"><a name="l01208"></a><span class="lineno"> 1208</span> }</div> |
| <div class="line"><a name="l01209"></a><span class="lineno"> 1209</span>  </div> |
| <div class="line"><a name="l01210"></a><span class="lineno"> 1210</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01211"></a><span class="lineno"> 1211</span> uint32_t var_opt_sketch<T, A>::choose_delete_slot(<span class="keywordtype">double</span> wt_cands, uint32_t num_cands)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l01212"></a><span class="lineno"> 1212</span>  <span class="keywordflow">if</span> (r_ == 0) <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"choosing delete slot while in exact mode"</span>);</div> |
| <div class="line"><a name="l01213"></a><span class="lineno"> 1213</span>  </div> |
| <div class="line"><a name="l01214"></a><span class="lineno"> 1214</span>  <span class="keywordflow">if</span> (m_ == 0) {</div> |
| <div class="line"><a name="l01215"></a><span class="lineno"> 1215</span>  <span class="comment">// this happens if we insert a really heavy item</span></div> |
| <div class="line"><a name="l01216"></a><span class="lineno"> 1216</span>  <span class="keywordflow">return</span> pick_random_slot_in_r();</div> |
| <div class="line"><a name="l01217"></a><span class="lineno"> 1217</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (m_ == 1) {</div> |
| <div class="line"><a name="l01218"></a><span class="lineno"> 1218</span>  <span class="comment">// check if we keep th item in M or pick oen from R</span></div> |
| <div class="line"><a name="l01219"></a><span class="lineno"> 1219</span>  <span class="comment">// p(keep) = (num_cand - 1) * wt_M / wt_cand</span></div> |
| <div class="line"><a name="l01220"></a><span class="lineno"> 1220</span>  <span class="keywordtype">double</span> wt_m_cand = weights_[h_]; <span class="comment">// slot of item in M is h_</span></div> |
| <div class="line"><a name="l01221"></a><span class="lineno"> 1221</span>  <span class="keywordflow">if</span> ((wt_cands * next_double_exclude_zero()) < ((num_cands - 1) * wt_m_cand)) {</div> |
| <div class="line"><a name="l01222"></a><span class="lineno"> 1222</span>  <span class="keywordflow">return</span> pick_random_slot_in_r(); <span class="comment">// keep item in M</span></div> |
| <div class="line"><a name="l01223"></a><span class="lineno"> 1223</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l01224"></a><span class="lineno"> 1224</span>  <span class="keywordflow">return</span> h_; <span class="comment">// indext of item in M</span></div> |
| <div class="line"><a name="l01225"></a><span class="lineno"> 1225</span>  }</div> |
| <div class="line"><a name="l01226"></a><span class="lineno"> 1226</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l01227"></a><span class="lineno"> 1227</span>  <span class="comment">// general case</span></div> |
| <div class="line"><a name="l01228"></a><span class="lineno"> 1228</span>  <span class="keyword">const</span> uint32_t delete_slot = choose_weighted_delete_slot(wt_cands, num_cands);</div> |
| <div class="line"><a name="l01229"></a><span class="lineno"> 1229</span>  <span class="keyword">const</span> uint32_t first_r_slot = h_ + m_;</div> |
| <div class="line"><a name="l01230"></a><span class="lineno"> 1230</span>  <span class="keywordflow">if</span> (delete_slot == first_r_slot) {</div> |
| <div class="line"><a name="l01231"></a><span class="lineno"> 1231</span>  <span class="keywordflow">return</span> pick_random_slot_in_r();</div> |
| <div class="line"><a name="l01232"></a><span class="lineno"> 1232</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l01233"></a><span class="lineno"> 1233</span>  <span class="keywordflow">return</span> delete_slot;</div> |
| <div class="line"><a name="l01234"></a><span class="lineno"> 1234</span>  }</div> |
| <div class="line"><a name="l01235"></a><span class="lineno"> 1235</span>  }</div> |
| <div class="line"><a name="l01236"></a><span class="lineno"> 1236</span> }</div> |
| <div class="line"><a name="l01237"></a><span class="lineno"> 1237</span>  </div> |
| <div class="line"><a name="l01238"></a><span class="lineno"> 1238</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01239"></a><span class="lineno"> 1239</span> uint32_t var_opt_sketch<T, A>::choose_weighted_delete_slot(<span class="keywordtype">double</span> wt_cands, uint32_t num_cands)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l01240"></a><span class="lineno"> 1240</span>  <span class="keywordflow">if</span> (m_ < 1) <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"must have weighted delete slot"</span>);</div> |
| <div class="line"><a name="l01241"></a><span class="lineno"> 1241</span>  </div> |
| <div class="line"><a name="l01242"></a><span class="lineno"> 1242</span>  <span class="keyword">const</span> uint32_t offset = h_;</div> |
| <div class="line"><a name="l01243"></a><span class="lineno"> 1243</span>  <span class="keyword">const</span> uint32_t final_m = (offset + m_) - 1;</div> |
| <div class="line"><a name="l01244"></a><span class="lineno"> 1244</span>  <span class="keyword">const</span> uint32_t num_to_keep = num_cands - 1;</div> |
| <div class="line"><a name="l01245"></a><span class="lineno"> 1245</span>  </div> |
| <div class="line"><a name="l01246"></a><span class="lineno"> 1246</span>  <span class="keywordtype">double</span> left_subtotal = 0.0;</div> |
| <div class="line"><a name="l01247"></a><span class="lineno"> 1247</span>  <span class="keywordtype">double</span> right_subtotal = -1.0 * wt_cands * next_double_exclude_zero();</div> |
| <div class="line"><a name="l01248"></a><span class="lineno"> 1248</span>  </div> |
| <div class="line"><a name="l01249"></a><span class="lineno"> 1249</span>  <span class="keywordflow">for</span> (uint32_t i = offset; i <= final_m; ++i) {</div> |
| <div class="line"><a name="l01250"></a><span class="lineno"> 1250</span>  left_subtotal += num_to_keep * weights_[i];</div> |
| <div class="line"><a name="l01251"></a><span class="lineno"> 1251</span>  right_subtotal += wt_cands;</div> |
| <div class="line"><a name="l01252"></a><span class="lineno"> 1252</span>  </div> |
| <div class="line"><a name="l01253"></a><span class="lineno"> 1253</span>  <span class="keywordflow">if</span> (left_subtotal < right_subtotal) {</div> |
| <div class="line"><a name="l01254"></a><span class="lineno"> 1254</span>  <span class="keywordflow">return</span> i;</div> |
| <div class="line"><a name="l01255"></a><span class="lineno"> 1255</span>  }</div> |
| <div class="line"><a name="l01256"></a><span class="lineno"> 1256</span>  }</div> |
| <div class="line"><a name="l01257"></a><span class="lineno"> 1257</span>  </div> |
| <div class="line"><a name="l01258"></a><span class="lineno"> 1258</span>  <span class="comment">// this slot tells caller that we need to delete out of R</span></div> |
| <div class="line"><a name="l01259"></a><span class="lineno"> 1259</span>  <span class="keywordflow">return</span> final_m + 1;</div> |
| <div class="line"><a name="l01260"></a><span class="lineno"> 1260</span> }</div> |
| <div class="line"><a name="l01261"></a><span class="lineno"> 1261</span>  </div> |
| <div class="line"><a name="l01262"></a><span class="lineno"> 1262</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01263"></a><span class="lineno"> 1263</span> uint32_t var_opt_sketch<T, A>::pick_random_slot_in_r()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l01264"></a><span class="lineno"> 1264</span>  <span class="keywordflow">if</span> (r_ == 0) <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"r_ = 0 when picking slot in R region"</span>);</div> |
| <div class="line"><a name="l01265"></a><span class="lineno"> 1265</span>  <span class="keyword">const</span> uint32_t offset = h_ + m_;</div> |
| <div class="line"><a name="l01266"></a><span class="lineno"> 1266</span>  <span class="keywordflow">if</span> (r_ == 1) {</div> |
| <div class="line"><a name="l01267"></a><span class="lineno"> 1267</span>  <span class="keywordflow">return</span> offset;</div> |
| <div class="line"><a name="l01268"></a><span class="lineno"> 1268</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l01269"></a><span class="lineno"> 1269</span>  <span class="keywordflow">return</span> offset + next_int(r_);</div> |
| <div class="line"><a name="l01270"></a><span class="lineno"> 1270</span>  }</div> |
| <div class="line"><a name="l01271"></a><span class="lineno"> 1271</span> }</div> |
| <div class="line"><a name="l01272"></a><span class="lineno"> 1272</span>  </div> |
| <div class="line"><a name="l01273"></a><span class="lineno"> 1273</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01274"></a><span class="lineno"> 1274</span> <span class="keywordtype">double</span> var_opt_sketch<T, A>::peek_min()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l01275"></a><span class="lineno"> 1275</span>  <span class="keywordflow">if</span> (h_ == 0) <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"h_ = 0 when checking min in H region"</span>);</div> |
| <div class="line"><a name="l01276"></a><span class="lineno"> 1276</span>  <span class="keywordflow">return</span> weights_[0];</div> |
| <div class="line"><a name="l01277"></a><span class="lineno"> 1277</span> }</div> |
| <div class="line"><a name="l01278"></a><span class="lineno"> 1278</span>  </div> |
| <div class="line"><a name="l01279"></a><span class="lineno"> 1279</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01280"></a><span class="lineno"> 1280</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> var_opt_sketch<T, A>::is_marked(uint32_t idx)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l01281"></a><span class="lineno"> 1281</span>  <span class="keywordflow">return</span> marks_ == <span class="keyword">nullptr</span> ? false : marks_[idx];</div> |
| <div class="line"><a name="l01282"></a><span class="lineno"> 1282</span> }</div> |
| <div class="line"><a name="l01283"></a><span class="lineno"> 1283</span>  </div> |
| <div class="line"><a name="l01284"></a><span class="lineno"> 1284</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01285"></a><span class="lineno"> 1285</span> <span class="keywordtype">double</span> var_opt_sketch<T, A>::get_tau()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l01286"></a><span class="lineno"> 1286</span>  <span class="keywordflow">return</span> r_ == 0 ? std::nan(<span class="stringliteral">"1"</span>) : (total_wt_r_ / r_);</div> |
| <div class="line"><a name="l01287"></a><span class="lineno"> 1287</span> }</div> |
| <div class="line"><a name="l01288"></a><span class="lineno"> 1288</span>  </div> |
| <div class="line"><a name="l01289"></a><span class="lineno"> 1289</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01290"></a><span class="lineno"> 1290</span> <span class="keywordtype">void</span> var_opt_sketch<T, A>::strip_marks() {</div> |
| <div class="line"><a name="l01291"></a><span class="lineno"> 1291</span>  <span class="keywordflow">if</span> (marks_ == <span class="keyword">nullptr</span>) <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"request to strip marks from non-gadget"</span>);</div> |
| <div class="line"><a name="l01292"></a><span class="lineno"> 1292</span>  num_marks_in_h_ = 0;</div> |
| <div class="line"><a name="l01293"></a><span class="lineno"> 1293</span>  AllocBool(allocator_).deallocate(marks_, curr_items_alloc_);</div> |
| <div class="line"><a name="l01294"></a><span class="lineno"> 1294</span>  marks_ = <span class="keyword">nullptr</span>;</div> |
| <div class="line"><a name="l01295"></a><span class="lineno"> 1295</span> }</div> |
| <div class="line"><a name="l01296"></a><span class="lineno"> 1296</span>  </div> |
| <div class="line"><a name="l01297"></a><span class="lineno"> 1297</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01298"></a><span class="lineno"> 1298</span> <span class="keywordtype">void</span> var_opt_sketch<T, A>::check_preamble_longs(uint8_t preamble_longs, uint8_t flags) {</div> |
| <div class="line"><a name="l01299"></a><span class="lineno"> 1299</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> is_empty(flags & EMPTY_FLAG_MASK);</div> |
| <div class="line"><a name="l01300"></a><span class="lineno"> 1300</span>  </div> |
| <div class="line"><a name="l01301"></a><span class="lineno"> 1301</span>  <span class="keywordflow">if</span> (is_empty) {</div> |
| <div class="line"><a name="l01302"></a><span class="lineno"> 1302</span>  <span class="keywordflow">if</span> (preamble_longs != PREAMBLE_LONGS_EMPTY) {</div> |
| <div class="line"><a name="l01303"></a><span class="lineno"> 1303</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Possible corruption: Preamble longs must be "</span></div> |
| <div class="line"><a name="l01304"></a><span class="lineno"> 1304</span>  + std::to_string(PREAMBLE_LONGS_EMPTY) + <span class="stringliteral">" for an empty sketch. Found: "</span></div> |
| <div class="line"><a name="l01305"></a><span class="lineno"> 1305</span>  + std::to_string(preamble_longs));</div> |
| <div class="line"><a name="l01306"></a><span class="lineno"> 1306</span>  }</div> |
| <div class="line"><a name="l01307"></a><span class="lineno"> 1307</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l01308"></a><span class="lineno"> 1308</span>  <span class="keywordflow">if</span> (preamble_longs != PREAMBLE_LONGS_WARMUP</div> |
| <div class="line"><a name="l01309"></a><span class="lineno"> 1309</span>  && preamble_longs != PREAMBLE_LONGS_FULL) {</div> |
| <div class="line"><a name="l01310"></a><span class="lineno"> 1310</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Possible corruption: Preamble longs must be "</span></div> |
| <div class="line"><a name="l01311"></a><span class="lineno"> 1311</span>  + std::to_string(PREAMBLE_LONGS_WARMUP) + <span class="stringliteral">" or "</span></div> |
| <div class="line"><a name="l01312"></a><span class="lineno"> 1312</span>  + std::to_string(PREAMBLE_LONGS_FULL)</div> |
| <div class="line"><a name="l01313"></a><span class="lineno"> 1313</span>  + <span class="stringliteral">" for a non-empty sketch. Found: "</span> + std::to_string(preamble_longs));</div> |
| <div class="line"><a name="l01314"></a><span class="lineno"> 1314</span>  }</div> |
| <div class="line"><a name="l01315"></a><span class="lineno"> 1315</span>  }</div> |
| <div class="line"><a name="l01316"></a><span class="lineno"> 1316</span> }</div> |
| <div class="line"><a name="l01317"></a><span class="lineno"> 1317</span>  </div> |
| <div class="line"><a name="l01318"></a><span class="lineno"> 1318</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01319"></a><span class="lineno"> 1319</span> <span class="keywordtype">void</span> var_opt_sketch<T, A>::check_family_and_serialization_version(uint8_t family_id, uint8_t ser_ver) {</div> |
| <div class="line"><a name="l01320"></a><span class="lineno"> 1320</span>  <span class="keywordflow">if</span> (family_id == FAMILY_ID) {</div> |
| <div class="line"><a name="l01321"></a><span class="lineno"> 1321</span>  <span class="keywordflow">if</span> (ser_ver != SER_VER) {</div> |
| <div class="line"><a name="l01322"></a><span class="lineno"> 1322</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Possible corruption: VarOpt serialization version must be "</span></div> |
| <div class="line"><a name="l01323"></a><span class="lineno"> 1323</span>  + std::to_string(SER_VER) + <span class="stringliteral">". Found: "</span> + std::to_string(ser_ver));</div> |
| <div class="line"><a name="l01324"></a><span class="lineno"> 1324</span>  }</div> |
| <div class="line"><a name="l01325"></a><span class="lineno"> 1325</span>  <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l01326"></a><span class="lineno"> 1326</span>  }</div> |
| <div class="line"><a name="l01327"></a><span class="lineno"> 1327</span>  <span class="comment">// TODO: extend to handle reservoir sampling</span></div> |
| <div class="line"><a name="l01328"></a><span class="lineno"> 1328</span>  </div> |
| <div class="line"><a name="l01329"></a><span class="lineno"> 1329</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Possible corruption: VarOpt family id must be "</span></div> |
| <div class="line"><a name="l01330"></a><span class="lineno"> 1330</span>  + std::to_string(FAMILY_ID) + <span class="stringliteral">". Found: "</span> + std::to_string(family_id));</div> |
| <div class="line"><a name="l01331"></a><span class="lineno"> 1331</span> }</div> |
| <div class="line"><a name="l01332"></a><span class="lineno"> 1332</span>  </div> |
| <div class="line"><a name="l01333"></a><span class="lineno"> 1333</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01334"></a><span class="lineno"> 1334</span> uint32_t var_opt_sketch<T, A>::validate_and_get_target_size(uint32_t preamble_longs, uint32_t k, uint64_t n,</div> |
| <div class="line"><a name="l01335"></a><span class="lineno"> 1335</span>  uint32_t h, uint32_t r, resize_factor rf) {</div> |
| <div class="line"><a name="l01336"></a><span class="lineno"> 1336</span>  <span class="keywordflow">if</span> (k == 0 || k > MAX_K) {</div> |
| <div class="line"><a name="l01337"></a><span class="lineno"> 1337</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"k must be at least 1 and less than 2^31 - 1"</span>);</div> |
| <div class="line"><a name="l01338"></a><span class="lineno"> 1338</span>  }</div> |
| <div class="line"><a name="l01339"></a><span class="lineno"> 1339</span>  </div> |
| <div class="line"><a name="l01340"></a><span class="lineno"> 1340</span>  uint32_t array_size;</div> |
| <div class="line"><a name="l01341"></a><span class="lineno"> 1341</span>  </div> |
| <div class="line"><a name="l01342"></a><span class="lineno"> 1342</span>  <span class="keywordflow">if</span> (n <= k) {</div> |
| <div class="line"><a name="l01343"></a><span class="lineno"> 1343</span>  <span class="keywordflow">if</span> (preamble_longs != PREAMBLE_LONGS_WARMUP) {</div> |
| <div class="line"><a name="l01344"></a><span class="lineno"> 1344</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Possible corruption: deserializing with n <= k but not in warmup mode. "</span></div> |
| <div class="line"><a name="l01345"></a><span class="lineno"> 1345</span>  <span class="stringliteral">"Found n = "</span> + std::to_string(n) + <span class="stringliteral">", k = "</span> + std::to_string(k));</div> |
| <div class="line"><a name="l01346"></a><span class="lineno"> 1346</span>  }</div> |
| <div class="line"><a name="l01347"></a><span class="lineno"> 1347</span>  <span class="keywordflow">if</span> (n != h) {</div> |
| <div class="line"><a name="l01348"></a><span class="lineno"> 1348</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Possible corruption: deserializing in warmup mode but n != h. "</span></div> |
| <div class="line"><a name="l01349"></a><span class="lineno"> 1349</span>  <span class="stringliteral">"Found n = "</span> + std::to_string(n) + <span class="stringliteral">", h = "</span> + std::to_string(h));</div> |
| <div class="line"><a name="l01350"></a><span class="lineno"> 1350</span>  }</div> |
| <div class="line"><a name="l01351"></a><span class="lineno"> 1351</span>  <span class="keywordflow">if</span> (r > 0) {</div> |
| <div class="line"><a name="l01352"></a><span class="lineno"> 1352</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Possible corruption: deserializing in warmup mode but r > 0. "</span></div> |
| <div class="line"><a name="l01353"></a><span class="lineno"> 1353</span>  <span class="stringliteral">"Found r = "</span> + std::to_string(r));</div> |
| <div class="line"><a name="l01354"></a><span class="lineno"> 1354</span>  }</div> |
| <div class="line"><a name="l01355"></a><span class="lineno"> 1355</span>  </div> |
| <div class="line"><a name="l01356"></a><span class="lineno"> 1356</span>  <span class="keyword">const</span> uint32_t ceiling_lg_k = to_log_2(ceiling_power_of_2(k));</div> |
| <div class="line"><a name="l01357"></a><span class="lineno"> 1357</span>  <span class="keyword">const</span> uint32_t min_lg_size = to_log_2(ceiling_power_of_2(h));</div> |
| <div class="line"><a name="l01358"></a><span class="lineno"> 1358</span>  <span class="keyword">const</span> uint32_t initial_lg_size = starting_sub_multiple(ceiling_lg_k, rf, min_lg_size);</div> |
| <div class="line"><a name="l01359"></a><span class="lineno"> 1359</span>  array_size = get_adjusted_size(k, 1 << initial_lg_size);</div> |
| <div class="line"><a name="l01360"></a><span class="lineno"> 1360</span>  <span class="keywordflow">if</span> (array_size == k) { <span class="comment">// if full size, need to leave 1 for the gap</span></div> |
| <div class="line"><a name="l01361"></a><span class="lineno"> 1361</span>  ++array_size;</div> |
| <div class="line"><a name="l01362"></a><span class="lineno"> 1362</span>  }</div> |
| <div class="line"><a name="l01363"></a><span class="lineno"> 1363</span>  } <span class="keywordflow">else</span> { <span class="comment">// n > k</span></div> |
| <div class="line"><a name="l01364"></a><span class="lineno"> 1364</span>  <span class="keywordflow">if</span> (preamble_longs != PREAMBLE_LONGS_FULL) { </div> |
| <div class="line"><a name="l01365"></a><span class="lineno"> 1365</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Possible corruption: deserializing with n > k but not in full mode. "</span></div> |
| <div class="line"><a name="l01366"></a><span class="lineno"> 1366</span>  <span class="stringliteral">"Found n = "</span> + std::to_string(n) + <span class="stringliteral">", k = "</span> + std::to_string(k));</div> |
| <div class="line"><a name="l01367"></a><span class="lineno"> 1367</span>  }</div> |
| <div class="line"><a name="l01368"></a><span class="lineno"> 1368</span>  <span class="keywordflow">if</span> (h + r != k) {</div> |
| <div class="line"><a name="l01369"></a><span class="lineno"> 1369</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Possible corruption: deserializing in full mode but h + r != n. "</span></div> |
| <div class="line"><a name="l01370"></a><span class="lineno"> 1370</span>  <span class="stringliteral">"Found h = "</span> + std::to_string(h) + <span class="stringliteral">", r = "</span> + std::to_string(r) + <span class="stringliteral">", n = "</span> + std::to_string(n));</div> |
| <div class="line"><a name="l01371"></a><span class="lineno"> 1371</span>  }</div> |
| <div class="line"><a name="l01372"></a><span class="lineno"> 1372</span>  </div> |
| <div class="line"><a name="l01373"></a><span class="lineno"> 1373</span>  array_size = k + 1;</div> |
| <div class="line"><a name="l01374"></a><span class="lineno"> 1374</span>  }</div> |
| <div class="line"><a name="l01375"></a><span class="lineno"> 1375</span>  </div> |
| <div class="line"><a name="l01376"></a><span class="lineno"> 1376</span>  <span class="keywordflow">return</span> array_size;</div> |
| <div class="line"><a name="l01377"></a><span class="lineno"> 1377</span> }</div> |
| <div class="line"><a name="l01378"></a><span class="lineno"> 1378</span>  </div> |
| <div class="line"><a name="l01379"></a><span class="lineno"> 1379</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01380"></a><span class="lineno"> 1380</span> <span class="keyword">template</span><<span class="keyword">typename</span> P></div> |
| <div class="line"><a name="l01381"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a71f1302dd93f895508f65893f96796fa"> 1381</a></span> subset_summary <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::estimate_subset_sum</a>(P predicate)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l01382"></a><span class="lineno"> 1382</span>  <span class="keywordflow">if</span> (n_ == 0) {</div> |
| <div class="line"><a name="l01383"></a><span class="lineno"> 1383</span>  <span class="keywordflow">return</span> {0.0, 0.0, 0.0, 0.0};</div> |
| <div class="line"><a name="l01384"></a><span class="lineno"> 1384</span>  }</div> |
| <div class="line"><a name="l01385"></a><span class="lineno"> 1385</span>  </div> |
| <div class="line"><a name="l01386"></a><span class="lineno"> 1386</span>  <span class="keywordtype">double</span> total_wt_h = 0.0;</div> |
| <div class="line"><a name="l01387"></a><span class="lineno"> 1387</span>  <span class="keywordtype">double</span> h_true_wt = 0.0;</div> |
| <div class="line"><a name="l01388"></a><span class="lineno"> 1388</span>  <span class="keywordtype">size_t</span> idx = 0;</div> |
| <div class="line"><a name="l01389"></a><span class="lineno"> 1389</span>  <span class="keywordflow">for</span> (; idx < h_; ++idx) {</div> |
| <div class="line"><a name="l01390"></a><span class="lineno"> 1390</span>  <span class="keywordtype">double</span> wt = weights_[idx];</div> |
| <div class="line"><a name="l01391"></a><span class="lineno"> 1391</span>  total_wt_h += wt;</div> |
| <div class="line"><a name="l01392"></a><span class="lineno"> 1392</span>  <span class="keywordflow">if</span> (predicate(data_[idx])) {</div> |
| <div class="line"><a name="l01393"></a><span class="lineno"> 1393</span>  h_true_wt += wt;</div> |
| <div class="line"><a name="l01394"></a><span class="lineno"> 1394</span>  }</div> |
| <div class="line"><a name="l01395"></a><span class="lineno"> 1395</span>  }</div> |
| <div class="line"><a name="l01396"></a><span class="lineno"> 1396</span>  </div> |
| <div class="line"><a name="l01397"></a><span class="lineno"> 1397</span>  <span class="comment">// if only heavy items, we have an exact answer</span></div> |
| <div class="line"><a name="l01398"></a><span class="lineno"> 1398</span>  <span class="keywordflow">if</span> (r_ == 0) {</div> |
| <div class="line"><a name="l01399"></a><span class="lineno"> 1399</span>  <span class="keywordflow">return</span> {h_true_wt, h_true_wt, h_true_wt, h_true_wt};</div> |
| <div class="line"><a name="l01400"></a><span class="lineno"> 1400</span>  }</div> |
| <div class="line"><a name="l01401"></a><span class="lineno"> 1401</span>  </div> |
| <div class="line"><a name="l01402"></a><span class="lineno"> 1402</span>  <span class="comment">// since r_ > 0, we know we have samples</span></div> |
| <div class="line"><a name="l01403"></a><span class="lineno"> 1403</span>  <span class="keyword">const</span> uint64_t num_samples = n_ - h_;</div> |
| <div class="line"><a name="l01404"></a><span class="lineno"> 1404</span>  <span class="keywordtype">double</span> effective_sampling_rate = r_ / <span class="keyword">static_cast<</span><span class="keywordtype">double</span><span class="keyword">></span>(num_samples);</div> |
| <div class="line"><a name="l01405"></a><span class="lineno"> 1405</span>  <span class="keywordflow">if</span> (effective_sampling_rate < 0.0 || effective_sampling_rate > 1.0)</div> |
| <div class="line"><a name="l01406"></a><span class="lineno"> 1406</span>  <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"invalid sampling rate outside [0.0, 1.0]"</span>);</div> |
| <div class="line"><a name="l01407"></a><span class="lineno"> 1407</span>  </div> |
| <div class="line"><a name="l01408"></a><span class="lineno"> 1408</span>  uint32_t r_true_count = 0;</div> |
| <div class="line"><a name="l01409"></a><span class="lineno"> 1409</span>  ++idx; <span class="comment">// skip the gap</span></div> |
| <div class="line"><a name="l01410"></a><span class="lineno"> 1410</span>  <span class="keywordflow">for</span> (; idx < (k_ + 1); ++idx) {</div> |
| <div class="line"><a name="l01411"></a><span class="lineno"> 1411</span>  <span class="keywordflow">if</span> (predicate(data_[idx])) {</div> |
| <div class="line"><a name="l01412"></a><span class="lineno"> 1412</span>  ++r_true_count;</div> |
| <div class="line"><a name="l01413"></a><span class="lineno"> 1413</span>  }</div> |
| <div class="line"><a name="l01414"></a><span class="lineno"> 1414</span>  }</div> |
| <div class="line"><a name="l01415"></a><span class="lineno"> 1415</span>  </div> |
| <div class="line"><a name="l01416"></a><span class="lineno"> 1416</span>  <span class="keywordtype">double</span> lb_true_fraction = pseudo_hypergeometric_lb_on_p(r_, r_true_count, effective_sampling_rate);</div> |
| <div class="line"><a name="l01417"></a><span class="lineno"> 1417</span>  <span class="keywordtype">double</span> estimated_true_fraction = (1.0 * r_true_count) / r_;</div> |
| <div class="line"><a name="l01418"></a><span class="lineno"> 1418</span>  <span class="keywordtype">double</span> ub_true_fraction = pseudo_hypergeometric_ub_on_p(r_, r_true_count, effective_sampling_rate);</div> |
| <div class="line"><a name="l01419"></a><span class="lineno"> 1419</span>  </div> |
| <div class="line"><a name="l01420"></a><span class="lineno"> 1420</span>  <span class="keywordflow">return</span> { h_true_wt + (total_wt_r_ * lb_true_fraction),</div> |
| <div class="line"><a name="l01421"></a><span class="lineno"> 1421</span>  h_true_wt + (total_wt_r_ * estimated_true_fraction),</div> |
| <div class="line"><a name="l01422"></a><span class="lineno"> 1422</span>  h_true_wt + (total_wt_r_ * ub_true_fraction),</div> |
| <div class="line"><a name="l01423"></a><span class="lineno"> 1423</span>  total_wt_h + total_wt_r_</div> |
| <div class="line"><a name="l01424"></a><span class="lineno"> 1424</span>  };</div> |
| <div class="line"><a name="l01425"></a><span class="lineno"> 1425</span> }</div> |
| <div class="line"><a name="l01426"></a><span class="lineno"> 1426</span>  </div> |
| <div class="line"><a name="l01427"></a><span class="lineno"> 1427</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01428"></a><span class="lineno"> 1428</span> <span class="keyword">class </span><a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a><T, A>::items_deleter {</div> |
| <div class="line"><a name="l01429"></a><span class="lineno"> 1429</span>  <span class="keyword">public</span>:</div> |
| <div class="line"><a name="l01430"></a><span class="lineno"> 1430</span>  items_deleter(uint32_t num, <span class="keyword">const</span> A& allocator) : num(num), h_count(0), r_count(0), allocator(allocator) {}</div> |
| <div class="line"><a name="l01431"></a><span class="lineno"> 1431</span>  <span class="keywordtype">void</span> set_h(uint32_t h) { h_count = h; }</div> |
| <div class="line"><a name="l01432"></a><span class="lineno"> 1432</span>  <span class="keywordtype">void</span> set_r(uint32_t r) { r_count = r; } </div> |
| <div class="line"><a name="l01433"></a><span class="lineno"> 1433</span>  <span class="keywordtype">void</span> operator() (T* ptr) {</div> |
| <div class="line"><a name="l01434"></a><span class="lineno"> 1434</span>  <span class="keywordflow">if</span> (h_count > 0) {</div> |
| <div class="line"><a name="l01435"></a><span class="lineno"> 1435</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < h_count; ++i) {</div> |
| <div class="line"><a name="l01436"></a><span class="lineno"> 1436</span>  ptr[i].~T();</div> |
| <div class="line"><a name="l01437"></a><span class="lineno"> 1437</span>  }</div> |
| <div class="line"><a name="l01438"></a><span class="lineno"> 1438</span>  }</div> |
| <div class="line"><a name="l01439"></a><span class="lineno"> 1439</span>  <span class="keywordflow">if</span> (r_count > 0) {</div> |
| <div class="line"><a name="l01440"></a><span class="lineno"> 1440</span>  uint32_t end = h_count + r_count + 1;</div> |
| <div class="line"><a name="l01441"></a><span class="lineno"> 1441</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = h_count + 1; i < end; ++i) {</div> |
| <div class="line"><a name="l01442"></a><span class="lineno"> 1442</span>  ptr[i].~T();</div> |
| <div class="line"><a name="l01443"></a><span class="lineno"> 1443</span>  }</div> |
| <div class="line"><a name="l01444"></a><span class="lineno"> 1444</span>  }</div> |
| <div class="line"><a name="l01445"></a><span class="lineno"> 1445</span>  <span class="keywordflow">if</span> (ptr != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l01446"></a><span class="lineno"> 1446</span>  allocator.deallocate(ptr, num);</div> |
| <div class="line"><a name="l01447"></a><span class="lineno"> 1447</span>  }</div> |
| <div class="line"><a name="l01448"></a><span class="lineno"> 1448</span>  }</div> |
| <div class="line"><a name="l01449"></a><span class="lineno"> 1449</span>  <span class="keyword">private</span>:</div> |
| <div class="line"><a name="l01450"></a><span class="lineno"> 1450</span>  uint32_t num;</div> |
| <div class="line"><a name="l01451"></a><span class="lineno"> 1451</span>  uint32_t h_count;</div> |
| <div class="line"><a name="l01452"></a><span class="lineno"> 1452</span>  uint32_t r_count;</div> |
| <div class="line"><a name="l01453"></a><span class="lineno"> 1453</span>  A allocator;</div> |
| <div class="line"><a name="l01454"></a><span class="lineno"> 1454</span> };</div> |
| <div class="line"><a name="l01455"></a><span class="lineno"> 1455</span>  </div> |
| <div class="line"><a name="l01456"></a><span class="lineno"> 1456</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01457"></a><span class="lineno"> 1457</span> <span class="keyword">class </span>var_opt_sketch<T, A>::weights_deleter {</div> |
| <div class="line"><a name="l01458"></a><span class="lineno"> 1458</span>  <span class="keyword">public</span>:</div> |
| <div class="line"><a name="l01459"></a><span class="lineno"> 1459</span>  weights_deleter(uint32_t num, <span class="keyword">const</span> A& allocator) : num(num), allocator(allocator) {}</div> |
| <div class="line"><a name="l01460"></a><span class="lineno"> 1460</span>  <span class="keywordtype">void</span> operator() (<span class="keywordtype">double</span>* ptr) {</div> |
| <div class="line"><a name="l01461"></a><span class="lineno"> 1461</span>  <span class="keywordflow">if</span> (ptr != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l01462"></a><span class="lineno"> 1462</span>  allocator.deallocate(ptr, num);</div> |
| <div class="line"><a name="l01463"></a><span class="lineno"> 1463</span>  }</div> |
| <div class="line"><a name="l01464"></a><span class="lineno"> 1464</span>  }</div> |
| <div class="line"><a name="l01465"></a><span class="lineno"> 1465</span>  <span class="keyword">private</span>:</div> |
| <div class="line"><a name="l01466"></a><span class="lineno"> 1466</span>  uint32_t num;</div> |
| <div class="line"><a name="l01467"></a><span class="lineno"> 1467</span>  AllocDouble allocator;</div> |
| <div class="line"><a name="l01468"></a><span class="lineno"> 1468</span> };</div> |
| <div class="line"><a name="l01469"></a><span class="lineno"> 1469</span>  </div> |
| <div class="line"><a name="l01470"></a><span class="lineno"> 1470</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01471"></a><span class="lineno"> 1471</span> <span class="keyword">class </span>var_opt_sketch<T, A>::marks_deleter {</div> |
| <div class="line"><a name="l01472"></a><span class="lineno"> 1472</span>  <span class="keyword">public</span>:</div> |
| <div class="line"><a name="l01473"></a><span class="lineno"> 1473</span>  marks_deleter(uint32_t num, <span class="keyword">const</span> A& allocator) : num(num), allocator(allocator) {}</div> |
| <div class="line"><a name="l01474"></a><span class="lineno"> 1474</span>  <span class="keywordtype">void</span> operator() (<span class="keywordtype">bool</span>* ptr) {</div> |
| <div class="line"><a name="l01475"></a><span class="lineno"> 1475</span>  <span class="keywordflow">if</span> (ptr != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l01476"></a><span class="lineno"> 1476</span>  allocator.deallocate(ptr, 1);</div> |
| <div class="line"><a name="l01477"></a><span class="lineno"> 1477</span>  }</div> |
| <div class="line"><a name="l01478"></a><span class="lineno"> 1478</span>  }</div> |
| <div class="line"><a name="l01479"></a><span class="lineno"> 1479</span>  <span class="keyword">private</span>:</div> |
| <div class="line"><a name="l01480"></a><span class="lineno"> 1480</span>  uint32_t num;</div> |
| <div class="line"><a name="l01481"></a><span class="lineno"> 1481</span>  AllocBool allocator;</div> |
| <div class="line"><a name="l01482"></a><span class="lineno"> 1482</span> };</div> |
| <div class="line"><a name="l01483"></a><span class="lineno"> 1483</span>  </div> |
| <div class="line"><a name="l01484"></a><span class="lineno"> 1484</span>  </div> |
| <div class="line"><a name="l01485"></a><span class="lineno"> 1485</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01486"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a0faac62cb9f27b09afc849def518f5cc"> 1486</a></span> <span class="keyword">typename</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::const_iterator</a> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::begin</a>()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l01487"></a><span class="lineno"> 1487</span>  <span class="keywordflow">return</span> const_iterator(*<span class="keyword">this</span>, <span class="keyword">false</span>);</div> |
| <div class="line"><a name="l01488"></a><span class="lineno"> 1488</span> }</div> |
| <div class="line"><a name="l01489"></a><span class="lineno"> 1489</span>  </div> |
| <div class="line"><a name="l01490"></a><span class="lineno"> 1490</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01491"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#ae9e1e5356b5d10a177fa50f7bdfdfd96"> 1491</a></span> <span class="keyword">typename</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::const_iterator</a> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::end</a>()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l01492"></a><span class="lineno"> 1492</span>  <span class="keywordflow">return</span> const_iterator(*<span class="keyword">this</span>, <span class="keyword">true</span>);</div> |
| <div class="line"><a name="l01493"></a><span class="lineno"> 1493</span> }</div> |
| <div class="line"><a name="l01494"></a><span class="lineno"> 1494</span>  </div> |
| <div class="line"><a name="l01495"></a><span class="lineno"> 1495</span> <span class="comment">// -------- var_opt_sketch::const_iterator implementation ---------</span></div> |
| <div class="line"><a name="l01496"></a><span class="lineno"> 1496</span>  </div> |
| <div class="line"><a name="l01497"></a><span class="lineno"> 1497</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01498"></a><span class="lineno"> 1498</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A>::const_iterator::const_iterator</a>(<span class="keyword">const</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>& sk, <span class="keywordtype">bool</span> is_end) :</div> |
| <div class="line"><a name="l01499"></a><span class="lineno"> 1499</span>  sk_(&sk),</div> |
| <div class="line"><a name="l01500"></a><span class="lineno"> 1500</span>  cum_r_weight_(0.0),</div> |
| <div class="line"><a name="l01501"></a><span class="lineno"> 1501</span>  r_item_wt_(sk.get_tau()),</div> |
| <div class="line"><a name="l01502"></a><span class="lineno"> 1502</span>  final_idx_(sk.r_ > 0 ? sk.h_ + sk.r_ + 1 : sk.h_)</div> |
| <div class="line"><a name="l01503"></a><span class="lineno"> 1503</span> {</div> |
| <div class="line"><a name="l01504"></a><span class="lineno"> 1504</span>  <span class="comment">// index logic easier to read if not inline</span></div> |
| <div class="line"><a name="l01505"></a><span class="lineno"> 1505</span>  <span class="keywordflow">if</span> (is_end) {</div> |
| <div class="line"><a name="l01506"></a><span class="lineno"> 1506</span>  idx_ = final_idx_;</div> |
| <div class="line"><a name="l01507"></a><span class="lineno"> 1507</span>  sk_ = <span class="keyword">nullptr</span>;</div> |
| <div class="line"><a name="l01508"></a><span class="lineno"> 1508</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l01509"></a><span class="lineno"> 1509</span>  idx_ = (sk.h_ == 0 && sk.r_ > 0 ? 1 : 0); <span class="comment">// skip if gap is at start</span></div> |
| <div class="line"><a name="l01510"></a><span class="lineno"> 1510</span>  }</div> |
| <div class="line"><a name="l01511"></a><span class="lineno"> 1511</span>  </div> |
| <div class="line"><a name="l01512"></a><span class="lineno"> 1512</span>  <span class="comment">// should only apply if sketch is empty</span></div> |
| <div class="line"><a name="l01513"></a><span class="lineno"> 1513</span>  <span class="keywordflow">if</span> (idx_ == final_idx_) { sk_ = <span class="keyword">nullptr</span>; }</div> |
| <div class="line"><a name="l01514"></a><span class="lineno"> 1514</span> }</div> |
| <div class="line"><a name="l01515"></a><span class="lineno"> 1515</span>  </div> |
| <div class="line"><a name="l01516"></a><span class="lineno"> 1516</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01517"></a><span class="lineno"> 1517</span> var_opt_sketch<T, A>::const_iterator::const_iterator(<span class="keyword">const</span> var_opt_sketch& sk, <span class="keywordtype">bool</span> is_end, <span class="keywordtype">bool</span> use_r_region) :</div> |
| <div class="line"><a name="l01518"></a><span class="lineno"> 1518</span>  sk_(&sk),</div> |
| <div class="line"><a name="l01519"></a><span class="lineno"> 1519</span>  cum_r_weight_(0.0),</div> |
| <div class="line"><a name="l01520"></a><span class="lineno"> 1520</span>  r_item_wt_(sk.get_tau()),</div> |
| <div class="line"><a name="l01521"></a><span class="lineno"> 1521</span>  final_idx_(sk.h_ + (use_r_region ? 1 + sk.r_ : 0))</div> |
| <div class="line"><a name="l01522"></a><span class="lineno"> 1522</span> {</div> |
| <div class="line"><a name="l01523"></a><span class="lineno"> 1523</span>  <span class="keywordflow">if</span> (use_r_region) {</div> |
| <div class="line"><a name="l01524"></a><span class="lineno"> 1524</span>  idx_ = sk.h_ + 1 + (is_end ? sk.r_ : 0);</div> |
| <div class="line"><a name="l01525"></a><span class="lineno"> 1525</span>  } <span class="keywordflow">else</span> { <span class="comment">// H region</span></div> |
| <div class="line"><a name="l01526"></a><span class="lineno"> 1526</span>  <span class="comment">// gap at start only if h_ == 0, so index always starts at 0</span></div> |
| <div class="line"><a name="l01527"></a><span class="lineno"> 1527</span>  idx_ = (is_end ? sk.h_ : 0);</div> |
| <div class="line"><a name="l01528"></a><span class="lineno"> 1528</span>  }</div> |
| <div class="line"><a name="l01529"></a><span class="lineno"> 1529</span>  </div> |
| <div class="line"><a name="l01530"></a><span class="lineno"> 1530</span>  <span class="comment">// unlike in full iterator case, may happen even if sketch is not empty</span></div> |
| <div class="line"><a name="l01531"></a><span class="lineno"> 1531</span>  <span class="keywordflow">if</span> (idx_ == final_idx_) { sk_ = <span class="keyword">nullptr</span>; }</div> |
| <div class="line"><a name="l01532"></a><span class="lineno"> 1532</span> }</div> |
| <div class="line"><a name="l01533"></a><span class="lineno"> 1533</span>  </div> |
| <div class="line"><a name="l01534"></a><span class="lineno"> 1534</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01535"></a><span class="lineno"> 1535</span> var_opt_sketch<T, A>::const_iterator::const_iterator(<span class="keyword">const</span> const_iterator& other) :</div> |
| <div class="line"><a name="l01536"></a><span class="lineno"> 1536</span>  sk_(other.sk_),</div> |
| <div class="line"><a name="l01537"></a><span class="lineno"> 1537</span>  cum_r_weight_(other.cum_r_weight_),</div> |
| <div class="line"><a name="l01538"></a><span class="lineno"> 1538</span>  r_item_wt_(other.r_item_wt_),</div> |
| <div class="line"><a name="l01539"></a><span class="lineno"> 1539</span>  idx_(other.idx_),</div> |
| <div class="line"><a name="l01540"></a><span class="lineno"> 1540</span>  final_idx_(other.final_idx_)</div> |
| <div class="line"><a name="l01541"></a><span class="lineno"> 1541</span> {}</div> |
| <div class="line"><a name="l01542"></a><span class="lineno"> 1542</span>  </div> |
| <div class="line"><a name="l01543"></a><span class="lineno"> 1543</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01544"></a><span class="lineno"> 1544</span> <span class="keyword">typename</span> var_opt_sketch<T, A>::const_iterator& var_opt_sketch<T, A>::const_iterator::operator++() {</div> |
| <div class="line"><a name="l01545"></a><span class="lineno"> 1545</span>  <span class="comment">// accumulate weight already visited</span></div> |
| <div class="line"><a name="l01546"></a><span class="lineno"> 1546</span>  <span class="keywordflow">if</span> (idx_ > sk_->h_) { cum_r_weight_ += r_item_wt_; }</div> |
| <div class="line"><a name="l01547"></a><span class="lineno"> 1547</span>  </div> |
| <div class="line"><a name="l01548"></a><span class="lineno"> 1548</span>  ++idx_;</div> |
| <div class="line"><a name="l01549"></a><span class="lineno"> 1549</span>  </div> |
| <div class="line"><a name="l01550"></a><span class="lineno"> 1550</span>  <span class="keywordflow">if</span> (idx_ == final_idx_) {</div> |
| <div class="line"><a name="l01551"></a><span class="lineno"> 1551</span>  sk_ = <span class="keyword">nullptr</span>;</div> |
| <div class="line"><a name="l01552"></a><span class="lineno"> 1552</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div> |
| <div class="line"><a name="l01553"></a><span class="lineno"> 1553</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (idx_ == sk_->h_ && sk_->r_ > 0) { <span class="comment">// check for the gap</span></div> |
| <div class="line"><a name="l01554"></a><span class="lineno"> 1554</span>  ++idx_;</div> |
| <div class="line"><a name="l01555"></a><span class="lineno"> 1555</span>  }</div> |
| <div class="line"><a name="l01556"></a><span class="lineno"> 1556</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div> |
| <div class="line"><a name="l01557"></a><span class="lineno"> 1557</span> }</div> |
| <div class="line"><a name="l01558"></a><span class="lineno"> 1558</span>  </div> |
| <div class="line"><a name="l01559"></a><span class="lineno"> 1559</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01560"></a><span class="lineno"> 1560</span> <span class="keyword">typename</span> var_opt_sketch<T, A>::const_iterator& var_opt_sketch<T, A>::const_iterator::operator++(<span class="keywordtype">int</span>) {</div> |
| <div class="line"><a name="l01561"></a><span class="lineno"> 1561</span>  const_iterator tmp(*<span class="keyword">this</span>);</div> |
| <div class="line"><a name="l01562"></a><span class="lineno"> 1562</span>  operator++();</div> |
| <div class="line"><a name="l01563"></a><span class="lineno"> 1563</span>  <span class="keywordflow">return</span> tmp;</div> |
| <div class="line"><a name="l01564"></a><span class="lineno"> 1564</span> }</div> |
| <div class="line"><a name="l01565"></a><span class="lineno"> 1565</span>  </div> |
| <div class="line"><a name="l01566"></a><span class="lineno"> 1566</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01567"></a><span class="lineno"> 1567</span> <span class="keywordtype">bool</span> var_opt_sketch<T, A>::const_iterator::operator==(<span class="keyword">const</span> const_iterator& other)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l01568"></a><span class="lineno"> 1568</span>  <span class="keywordflow">if</span> (sk_ != other.sk_) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l01569"></a><span class="lineno"> 1569</span>  <span class="keywordflow">if</span> (sk_ == <span class="keyword">nullptr</span>) <span class="keywordflow">return</span> <span class="keyword">true</span>; <span class="comment">// end (and we know other.sk_ is also null)</span></div> |
| <div class="line"><a name="l01570"></a><span class="lineno"> 1570</span>  <span class="keywordflow">return</span> idx_ == other.idx_;</div> |
| <div class="line"><a name="l01571"></a><span class="lineno"> 1571</span> }</div> |
| <div class="line"><a name="l01572"></a><span class="lineno"> 1572</span>  </div> |
| <div class="line"><a name="l01573"></a><span class="lineno"> 1573</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01574"></a><span class="lineno"> 1574</span> <span class="keywordtype">bool</span> var_opt_sketch<T, A>::const_iterator::operator!=(<span class="keyword">const</span> const_iterator& other)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l01575"></a><span class="lineno"> 1575</span>  <span class="keywordflow">return</span> !operator==(other);</div> |
| <div class="line"><a name="l01576"></a><span class="lineno"> 1576</span> }</div> |
| <div class="line"><a name="l01577"></a><span class="lineno"> 1577</span>  </div> |
| <div class="line"><a name="l01578"></a><span class="lineno"> 1578</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01579"></a><span class="lineno"> 1579</span> <span class="keyword">auto</span> var_opt_sketch<T, A>::const_iterator::operator*() const -> reference {</div> |
| <div class="line"><a name="l01580"></a><span class="lineno"> 1580</span>  <span class="keywordtype">double</span> wt;</div> |
| <div class="line"><a name="l01581"></a><span class="lineno"> 1581</span>  <span class="keywordflow">if</span> (idx_ < sk_->h_) {</div> |
| <div class="line"><a name="l01582"></a><span class="lineno"> 1582</span>  wt = sk_->weights_[idx_];</div> |
| <div class="line"><a name="l01583"></a><span class="lineno"> 1583</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l01584"></a><span class="lineno"> 1584</span>  wt = r_item_wt_;</div> |
| <div class="line"><a name="l01585"></a><span class="lineno"> 1585</span>  }</div> |
| <div class="line"><a name="l01586"></a><span class="lineno"> 1586</span>  <span class="keywordflow">return</span> value_type(sk_->data_[idx_], wt);</div> |
| <div class="line"><a name="l01587"></a><span class="lineno"> 1587</span> }</div> |
| <div class="line"><a name="l01588"></a><span class="lineno"> 1588</span>  </div> |
| <div class="line"><a name="l01589"></a><span class="lineno"> 1589</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01590"></a><span class="lineno"> 1590</span> <span class="keyword">auto</span> var_opt_sketch<T, A>::const_iterator::operator->() const -> pointer {</div> |
| <div class="line"><a name="l01591"></a><span class="lineno"> 1591</span>  <span class="keywordflow">return</span> **<span class="keyword">this</span>;</div> |
| <div class="line"><a name="l01592"></a><span class="lineno"> 1592</span> }</div> |
| <div class="line"><a name="l01593"></a><span class="lineno"> 1593</span>  </div> |
| <div class="line"><a name="l01594"></a><span class="lineno"> 1594</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01595"></a><span class="lineno"> 1595</span> <span class="keywordtype">bool</span> var_opt_sketch<T, A>::const_iterator::get_mark()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l01596"></a><span class="lineno"> 1596</span>  <span class="keywordflow">return</span> sk_->marks_ == <span class="keyword">nullptr</span> ? false : sk_->marks_[idx_];</div> |
| <div class="line"><a name="l01597"></a><span class="lineno"> 1597</span> }</div> |
| <div class="line"><a name="l01598"></a><span class="lineno"> 1598</span>  </div> |
| <div class="line"><a name="l01599"></a><span class="lineno"> 1599</span>  </div> |
| <div class="line"><a name="l01600"></a><span class="lineno"> 1600</span> <span class="comment">// -------- var_opt_sketch::iterator implementation ---------</span></div> |
| <div class="line"><a name="l01601"></a><span class="lineno"> 1601</span>  </div> |
| <div class="line"><a name="l01602"></a><span class="lineno"> 1602</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01603"></a><span class="lineno"> 1603</span> var_opt_sketch<T, A>::iterator::iterator(<span class="keyword">const</span> var_opt_sketch& sk, <span class="keywordtype">bool</span> is_end, <span class="keywordtype">bool</span> use_r_region) :</div> |
| <div class="line"><a name="l01604"></a><span class="lineno"> 1604</span>  sk_(&sk),</div> |
| <div class="line"><a name="l01605"></a><span class="lineno"> 1605</span>  cum_r_weight_(0.0),</div> |
| <div class="line"><a name="l01606"></a><span class="lineno"> 1606</span>  r_item_wt_(sk.get_tau()),</div> |
| <div class="line"><a name="l01607"></a><span class="lineno"> 1607</span>  final_idx_(sk.h_ + (use_r_region ? 1 + sk.r_ : 0))</div> |
| <div class="line"><a name="l01608"></a><span class="lineno"> 1608</span> {</div> |
| <div class="line"><a name="l01609"></a><span class="lineno"> 1609</span>  <span class="keywordflow">if</span> (use_r_region) {</div> |
| <div class="line"><a name="l01610"></a><span class="lineno"> 1610</span>  idx_ = sk.h_ + 1 + (is_end ? sk.r_ : 0);</div> |
| <div class="line"><a name="l01611"></a><span class="lineno"> 1611</span>  } <span class="keywordflow">else</span> { <span class="comment">// H region</span></div> |
| <div class="line"><a name="l01612"></a><span class="lineno"> 1612</span>  <span class="comment">// gap at start only if h_ == 0, so index always starts at 0</span></div> |
| <div class="line"><a name="l01613"></a><span class="lineno"> 1613</span>  idx_ = (is_end ? sk.h_ : 0);</div> |
| <div class="line"><a name="l01614"></a><span class="lineno"> 1614</span>  }</div> |
| <div class="line"><a name="l01615"></a><span class="lineno"> 1615</span>  </div> |
| <div class="line"><a name="l01616"></a><span class="lineno"> 1616</span>  <span class="comment">// unlike in full iterator case, may happen even if sketch is not empty</span></div> |
| <div class="line"><a name="l01617"></a><span class="lineno"> 1617</span>  <span class="keywordflow">if</span> (idx_ == final_idx_) { sk_ = <span class="keyword">nullptr</span>; }</div> |
| <div class="line"><a name="l01618"></a><span class="lineno"> 1618</span> }</div> |
| <div class="line"><a name="l01619"></a><span class="lineno"> 1619</span>  </div> |
| <div class="line"><a name="l01620"></a><span class="lineno"> 1620</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01621"></a><span class="lineno"> 1621</span> var_opt_sketch<T, A>::iterator::iterator(<span class="keyword">const</span> iterator& other) :</div> |
| <div class="line"><a name="l01622"></a><span class="lineno"> 1622</span>  sk_(other.sk_),</div> |
| <div class="line"><a name="l01623"></a><span class="lineno"> 1623</span>  cum_r_weight_(other.cum_r_weight_),</div> |
| <div class="line"><a name="l01624"></a><span class="lineno"> 1624</span>  r_item_wt_(other.r_item_wt_),</div> |
| <div class="line"><a name="l01625"></a><span class="lineno"> 1625</span>  idx_(other.idx_),</div> |
| <div class="line"><a name="l01626"></a><span class="lineno"> 1626</span>  final_idx_(other.final_idx_)</div> |
| <div class="line"><a name="l01627"></a><span class="lineno"> 1627</span> {}</div> |
| <div class="line"><a name="l01628"></a><span class="lineno"> 1628</span>  </div> |
| <div class="line"><a name="l01629"></a><span class="lineno"> 1629</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01630"></a><span class="lineno"> 1630</span> <span class="keyword">typename</span> var_opt_sketch<T, A>::iterator& var_opt_sketch<T, A>::iterator::operator++() {</div> |
| <div class="line"><a name="l01631"></a><span class="lineno"> 1631</span>  <span class="comment">// accumulate weight already visited</span></div> |
| <div class="line"><a name="l01632"></a><span class="lineno"> 1632</span>  <span class="keywordflow">if</span> (idx_ > sk_->h_) { cum_r_weight_ += r_item_wt_; }</div> |
| <div class="line"><a name="l01633"></a><span class="lineno"> 1633</span>  </div> |
| <div class="line"><a name="l01634"></a><span class="lineno"> 1634</span>  ++idx_;</div> |
| <div class="line"><a name="l01635"></a><span class="lineno"> 1635</span>  </div> |
| <div class="line"><a name="l01636"></a><span class="lineno"> 1636</span>  <span class="keywordflow">if</span> (idx_ == final_idx_) {</div> |
| <div class="line"><a name="l01637"></a><span class="lineno"> 1637</span>  sk_ = <span class="keyword">nullptr</span>;</div> |
| <div class="line"><a name="l01638"></a><span class="lineno"> 1638</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div> |
| <div class="line"><a name="l01639"></a><span class="lineno"> 1639</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (idx_ == sk_->h_ && sk_->r_ > 0) { <span class="comment">// check for the gap</span></div> |
| <div class="line"><a name="l01640"></a><span class="lineno"> 1640</span>  ++idx_;</div> |
| <div class="line"><a name="l01641"></a><span class="lineno"> 1641</span>  }</div> |
| <div class="line"><a name="l01642"></a><span class="lineno"> 1642</span>  </div> |
| <div class="line"><a name="l01643"></a><span class="lineno"> 1643</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div> |
| <div class="line"><a name="l01644"></a><span class="lineno"> 1644</span> }</div> |
| <div class="line"><a name="l01645"></a><span class="lineno"> 1645</span>  </div> |
| <div class="line"><a name="l01646"></a><span class="lineno"> 1646</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01647"></a><span class="lineno"> 1647</span> <span class="keyword">typename</span> var_opt_sketch<T, A>::iterator& var_opt_sketch<T, A>::iterator::operator++(<span class="keywordtype">int</span>) {</div> |
| <div class="line"><a name="l01648"></a><span class="lineno"> 1648</span>  const_iterator tmp(*<span class="keyword">this</span>);</div> |
| <div class="line"><a name="l01649"></a><span class="lineno"> 1649</span>  operator++();</div> |
| <div class="line"><a name="l01650"></a><span class="lineno"> 1650</span>  <span class="keywordflow">return</span> tmp;</div> |
| <div class="line"><a name="l01651"></a><span class="lineno"> 1651</span> }</div> |
| <div class="line"><a name="l01652"></a><span class="lineno"> 1652</span>  </div> |
| <div class="line"><a name="l01653"></a><span class="lineno"> 1653</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01654"></a><span class="lineno"> 1654</span> <span class="keywordtype">bool</span> var_opt_sketch<T, A>::iterator::operator==(<span class="keyword">const</span> iterator& other)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l01655"></a><span class="lineno"> 1655</span>  <span class="keywordflow">if</span> (sk_ != other.sk_) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l01656"></a><span class="lineno"> 1656</span>  <span class="keywordflow">if</span> (sk_ == <span class="keyword">nullptr</span>) <span class="keywordflow">return</span> <span class="keyword">true</span>; <span class="comment">// end (and we know other.sk_ is also null)</span></div> |
| <div class="line"><a name="l01657"></a><span class="lineno"> 1657</span>  <span class="keywordflow">return</span> idx_ == other.idx_;</div> |
| <div class="line"><a name="l01658"></a><span class="lineno"> 1658</span> }</div> |
| <div class="line"><a name="l01659"></a><span class="lineno"> 1659</span>  </div> |
| <div class="line"><a name="l01660"></a><span class="lineno"> 1660</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01661"></a><span class="lineno"> 1661</span> <span class="keywordtype">bool</span> var_opt_sketch<T, A>::iterator::operator!=(<span class="keyword">const</span> iterator& other)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l01662"></a><span class="lineno"> 1662</span>  <span class="keywordflow">return</span> !operator==(other);</div> |
| <div class="line"><a name="l01663"></a><span class="lineno"> 1663</span> }</div> |
| <div class="line"><a name="l01664"></a><span class="lineno"> 1664</span>  </div> |
| <div class="line"><a name="l01665"></a><span class="lineno"> 1665</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01666"></a><span class="lineno"> 1666</span> <span class="keyword">auto</span> var_opt_sketch<T, A>::iterator::operator*() -> reference {</div> |
| <div class="line"><a name="l01667"></a><span class="lineno"> 1667</span>  <span class="keywordtype">double</span> wt;</div> |
| <div class="line"><a name="l01668"></a><span class="lineno"> 1668</span>  <span class="keywordflow">if</span> (idx_ < sk_->h_) {</div> |
| <div class="line"><a name="l01669"></a><span class="lineno"> 1669</span>  wt = sk_->weights_[idx_];</div> |
| <div class="line"><a name="l01670"></a><span class="lineno"> 1670</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (idx_ == final_idx_ - 1) {</div> |
| <div class="line"><a name="l01671"></a><span class="lineno"> 1671</span>  wt = sk_->total_wt_r_ - cum_r_weight_;</div> |
| <div class="line"><a name="l01672"></a><span class="lineno"> 1672</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l01673"></a><span class="lineno"> 1673</span>  wt = r_item_wt_;</div> |
| <div class="line"><a name="l01674"></a><span class="lineno"> 1674</span>  }</div> |
| <div class="line"><a name="l01675"></a><span class="lineno"> 1675</span>  <span class="keywordflow">return</span> value_type(sk_->data_[idx_], wt);</div> |
| <div class="line"><a name="l01676"></a><span class="lineno"> 1676</span> }</div> |
| <div class="line"><a name="l01677"></a><span class="lineno"> 1677</span>  </div> |
| <div class="line"><a name="l01678"></a><span class="lineno"> 1678</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01679"></a><span class="lineno"> 1679</span> <span class="keyword">auto</span> var_opt_sketch<T, A>::iterator::operator->() -> pointer {</div> |
| <div class="line"><a name="l01680"></a><span class="lineno"> 1680</span>  <span class="keywordflow">return</span> **<span class="keyword">this</span>;</div> |
| <div class="line"><a name="l01681"></a><span class="lineno"> 1681</span> }</div> |
| <div class="line"><a name="l01682"></a><span class="lineno"> 1682</span>  </div> |
| <div class="line"><a name="l01683"></a><span class="lineno"> 1683</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01684"></a><span class="lineno"> 1684</span> <span class="keywordtype">bool</span> var_opt_sketch<T, A>::iterator::get_mark()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l01685"></a><span class="lineno"> 1685</span>  <span class="keywordflow">return</span> sk_->marks_ == <span class="keyword">nullptr</span> ? false : sk_->marks_[idx_];</div> |
| <div class="line"><a name="l01686"></a><span class="lineno"> 1686</span> }</div> |
| <div class="line"><a name="l01687"></a><span class="lineno"> 1687</span>  </div> |
| <div class="line"><a name="l01688"></a><span class="lineno"> 1688</span> <span class="comment">/*</span></div> |
| <div class="line"><a name="l01689"></a><span class="lineno"> 1689</span> <span class="comment"> * Checks if target sampling allocation is more than 50% of max sampling size.</span></div> |
| <div class="line"><a name="l01690"></a><span class="lineno"> 1690</span> <span class="comment"> * If so, returns max sampling size, otherwise passes through target size.</span></div> |
| <div class="line"><a name="l01691"></a><span class="lineno"> 1691</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l01692"></a><span class="lineno"> 1692</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01693"></a><span class="lineno"> 1693</span> uint32_t var_opt_sketch<T, A>::get_adjusted_size(uint32_t max_size, uint32_t resize_target) {</div> |
| <div class="line"><a name="l01694"></a><span class="lineno"> 1694</span>  <span class="keywordflow">if</span> (max_size < (resize_target << 1)) {</div> |
| <div class="line"><a name="l01695"></a><span class="lineno"> 1695</span>  <span class="keywordflow">return</span> max_size;</div> |
| <div class="line"><a name="l01696"></a><span class="lineno"> 1696</span>  }</div> |
| <div class="line"><a name="l01697"></a><span class="lineno"> 1697</span>  <span class="keywordflow">return</span> resize_target;</div> |
| <div class="line"><a name="l01698"></a><span class="lineno"> 1698</span> }</div> |
| <div class="line"><a name="l01699"></a><span class="lineno"> 1699</span>  </div> |
| <div class="line"><a name="l01700"></a><span class="lineno"> 1700</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01701"></a><span class="lineno"> 1701</span> uint32_t var_opt_sketch<T, A>::starting_sub_multiple(uint32_t lg_target, uint32_t lg_rf, uint32_t lg_min) {</div> |
| <div class="line"><a name="l01702"></a><span class="lineno"> 1702</span>  <span class="keywordflow">return</span> (lg_target <= lg_min)</div> |
| <div class="line"><a name="l01703"></a><span class="lineno"> 1703</span>  ? lg_min : (lg_rf == 0) ? lg_target</div> |
| <div class="line"><a name="l01704"></a><span class="lineno"> 1704</span>  : (lg_target - lg_min) % lg_rf + lg_min;</div> |
| <div class="line"><a name="l01705"></a><span class="lineno"> 1705</span> }</div> |
| <div class="line"><a name="l01706"></a><span class="lineno"> 1706</span>  </div> |
| <div class="line"><a name="l01707"></a><span class="lineno"> 1707</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01708"></a><span class="lineno"> 1708</span> <span class="keywordtype">double</span> var_opt_sketch<T, A>::pseudo_hypergeometric_ub_on_p(uint64_t n, uint32_t k, <span class="keywordtype">double</span> sampling_rate) {</div> |
| <div class="line"><a name="l01709"></a><span class="lineno"> 1709</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> adjusted_kappa = DEFAULT_KAPPA * sqrt(1 - sampling_rate);</div> |
| <div class="line"><a name="l01710"></a><span class="lineno"> 1710</span>  <span class="keywordflow">return</span> bounds_binomial_proportions::approximate_upper_bound_on_p(n, k, adjusted_kappa);</div> |
| <div class="line"><a name="l01711"></a><span class="lineno"> 1711</span> }</div> |
| <div class="line"><a name="l01712"></a><span class="lineno"> 1712</span>  </div> |
| <div class="line"><a name="l01713"></a><span class="lineno"> 1713</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01714"></a><span class="lineno"> 1714</span> <span class="keywordtype">double</span> var_opt_sketch<T, A>::pseudo_hypergeometric_lb_on_p(uint64_t n, uint32_t k, <span class="keywordtype">double</span> sampling_rate) {</div> |
| <div class="line"><a name="l01715"></a><span class="lineno"> 1715</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> adjusted_kappa = DEFAULT_KAPPA * sqrt(1 - sampling_rate);</div> |
| <div class="line"><a name="l01716"></a><span class="lineno"> 1716</span>  <span class="keywordflow">return</span> bounds_binomial_proportions::approximate_lower_bound_on_p(n, k, adjusted_kappa);</div> |
| <div class="line"><a name="l01717"></a><span class="lineno"> 1717</span> }</div> |
| <div class="line"><a name="l01718"></a><span class="lineno"> 1718</span>  </div> |
| <div class="line"><a name="l01719"></a><span class="lineno"> 1719</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01720"></a><span class="lineno"> 1720</span> <span class="keywordtype">bool</span> var_opt_sketch<T, A>::is_power_of_2(uint32_t v) {</div> |
| <div class="line"><a name="l01721"></a><span class="lineno"> 1721</span>  <span class="keywordflow">return</span> v && !(v & (v - 1));</div> |
| <div class="line"><a name="l01722"></a><span class="lineno"> 1722</span> }</div> |
| <div class="line"><a name="l01723"></a><span class="lineno"> 1723</span>  </div> |
| <div class="line"><a name="l01724"></a><span class="lineno"> 1724</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01725"></a><span class="lineno"> 1725</span> uint32_t var_opt_sketch<T, A>::to_log_2(uint32_t v) {</div> |
| <div class="line"><a name="l01726"></a><span class="lineno"> 1726</span>  <span class="keywordflow">if</span> (is_power_of_2(v)) {</div> |
| <div class="line"><a name="l01727"></a><span class="lineno"> 1727</span>  <span class="keywordflow">return</span> count_trailing_zeros_in_u32(v);</div> |
| <div class="line"><a name="l01728"></a><span class="lineno"> 1728</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l01729"></a><span class="lineno"> 1729</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Attempt to compute integer log2 of non-positive or non-power of 2"</span>);</div> |
| <div class="line"><a name="l01730"></a><span class="lineno"> 1730</span>  }</div> |
| <div class="line"><a name="l01731"></a><span class="lineno"> 1731</span> }</div> |
| <div class="line"><a name="l01732"></a><span class="lineno"> 1732</span>  </div> |
| <div class="line"><a name="l01733"></a><span class="lineno"> 1733</span> <span class="comment">// Returns an integer in the range [0, max_value) -- excludes max_value</span></div> |
| <div class="line"><a name="l01734"></a><span class="lineno"> 1734</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01735"></a><span class="lineno"> 1735</span> uint32_t var_opt_sketch<T, A>::next_int(uint32_t max_value) {</div> |
| <div class="line"><a name="l01736"></a><span class="lineno"> 1736</span>  std::uniform_int_distribution<uint32_t> dist(0, max_value - 1);</div> |
| <div class="line"><a name="l01737"></a><span class="lineno"> 1737</span>  <span class="keywordflow">return</span> dist(random_utils::rand);</div> |
| <div class="line"><a name="l01738"></a><span class="lineno"> 1738</span> }</div> |
| <div class="line"><a name="l01739"></a><span class="lineno"> 1739</span>  </div> |
| <div class="line"><a name="l01740"></a><span class="lineno"> 1740</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l01741"></a><span class="lineno"> 1741</span> <span class="keywordtype">double</span> var_opt_sketch<T, A>::next_double_exclude_zero() {</div> |
| <div class="line"><a name="l01742"></a><span class="lineno"> 1742</span>  <span class="keywordtype">double</span> r = random_utils::next_double(random_utils::rand);</div> |
| <div class="line"><a name="l01743"></a><span class="lineno"> 1743</span>  <span class="keywordflow">while</span> (r == 0.0) {</div> |
| <div class="line"><a name="l01744"></a><span class="lineno"> 1744</span>  r = random_utils::next_double(random_utils::rand);</div> |
| <div class="line"><a name="l01745"></a><span class="lineno"> 1745</span>  }</div> |
| <div class="line"><a name="l01746"></a><span class="lineno"> 1746</span>  <span class="keywordflow">return</span> r;</div> |
| <div class="line"><a name="l01747"></a><span class="lineno"> 1747</span> }</div> |
| <div class="line"><a name="l01748"></a><span class="lineno"> 1748</span>  </div> |
| <div class="line"><a name="l01749"></a><span class="lineno"> 1749</span> }</div> |
| <div class="line"><a name="l01750"></a><span class="lineno"> 1750</span>  </div> |
| <div class="line"><a name="l01751"></a><span class="lineno"> 1751</span> <span class="comment">// namespace datasketches</span></div> |
| <div class="line"><a name="l01752"></a><span class="lineno"> 1752</span>  </div> |
| <div class="line"><a name="l01753"></a><span class="lineno"> 1753</span> <span class="preprocessor">#endif </span><span class="comment">// _VAR_OPT_SKETCH_IMPL_HPP_</span></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html">datasketches::var_opt_sketch</a></div><div class="ttdoc">This sketch samples data from a stream of items.</div><div class="ttdef"><b>Definition:</b> var_opt_sketch.hpp:67</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html_a1125ed18baf3f257b5796321c7ec0f8f"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#a1125ed18baf3f257b5796321c7ec0f8f">datasketches::var_opt_sketch< T, A >::update</a></div><div class="ttdeci">void update(const T &item, double weight=1.0)</div><div class="ttdoc">Updates this sketch with the given data item with the given weight.</div><div class="ttdef"><b>Definition:</b> var_opt_sketch_impl.hpp:709</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html_a1d0c269c23926e93b1c7a9c00e86af97"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#a1d0c269c23926e93b1c7a9c00e86af97">datasketches::var_opt_sketch< T, A >::serialize</a></div><div class="ttdeci">vector_bytes serialize(unsigned header_size_bytes=0, const SerDe &sd=SerDe()) const</div><div class="ttdoc">This method serializes the sketch as a vector of bytes.</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html_a6df9f2226b7197a0f612ee4aec0233e7"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#a6df9f2226b7197a0f612ee4aec0233e7">datasketches::var_opt_sketch::var_opt_sketch</a></div><div class="ttdeci">var_opt_sketch(uint32_t k, resize_factor rf=var_opt_constants::DEFAULT_RESIZE_FACTOR, const A &allocator=A())</div><div class="ttdoc">Constructor.</div><div class="ttdef"><b>Definition:</b> var_opt_sketch_impl.hpp:46</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html_aea8f1c4a6d0189de0db5b5cd085c39b1"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#aea8f1c4a6d0189de0db5b5cd085c39b1">datasketches::var_opt_sketch< T, A >::deserialize</a></div><div class="ttdeci">static var_opt_sketch deserialize(std::istream &is, const SerDe &sd=SerDe(), const A &allocator=A())</div><div class="ttdoc">This method deserializes a sketch from a given stream.</div></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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