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| <li class="navelem"><a class="el" href="dir_135820457b1e8e8dc5343e26fb29c1f8.html">sampling</a></li><li class="navelem"><a class="el" href="dir_577378e109fcef5e822b70d599376114.html">include</a></li> </ul> |
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| <div class="headertitle"><div class="title">ebpps_sample_impl.hpp</div></div> |
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| <div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*</span></div> |
| <div class="line"><a id="l00002" 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 id="l00003" 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 id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> * distributed with this work for additional information</span></div> |
| <div class="line"><a id="l00005" 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 id="l00006" 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 id="l00007" 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 id="l00008" 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 id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment"> *</span></div> |
| <div class="line"><a id="l00010" 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 id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment"> *</span></div> |
| <div class="line"><a id="l00012" 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 id="l00013" 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 id="l00014" 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 id="l00015" 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 id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment"> * specific language governing permissions and limitations</span></div> |
| <div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment"> * under the License.</span></div> |
| <div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment"> */</span></div> |
| <div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> </div> |
| <div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#ifndef _EBPPS_SAMPLE_IMPL_HPP_</span></div> |
| <div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#define _EBPPS_SAMPLE_IMPL_HPP_</span></div> |
| <div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> </div> |
| <div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include "common_defs.hpp"</span></div> |
| <div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#include "conditional_forward.hpp"</span></div> |
| <div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="preprocessor">#include "ebpps_sample.hpp"</span></div> |
| <div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#include "serde.hpp"</span></div> |
| <div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> </div> |
| <div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="preprocessor">#include <cmath></span></div> |
| <div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="preprocessor">#include <string></span></div> |
| <div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="preprocessor">#include <sstream></span></div> |
| <div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> </div> |
| <div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespacedatasketches.html">datasketches</a> {</div> |
| <div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> </div> |
| <div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span>ebpps_sample<T,A>::ebpps_sample(uint32_t reserved_size, <span class="keyword">const</span> A& allocator) :</div> |
| <div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> allocator_(allocator),</div> |
| <div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> c_(0.0),</div> |
| <div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> partial_item_(),</div> |
| <div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> data_(allocator)</div> |
| <div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> {</div> |
| <div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> data_.reserve(reserved_size);</div> |
| <div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> }</div> |
| <div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> </div> |
| <div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span>ebpps_sample<T,A>::ebpps_sample(std::vector<T, A>&& data, optional<T>&& partial_item, <span class="keywordtype">double</span> c, <span class="keyword">const</span> A& allocator) :</div> |
| <div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> allocator_(allocator),</div> |
| <div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> c_(c),</div> |
| <div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> partial_item_(partial_item),</div> |
| <div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> data_(data, allocator)</div> |
| <div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> {}</div> |
| <div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> </div> |
| <div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span><span class="keyword">template</span><<span class="keyword">typename</span> TT></div> |
| <div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span><span class="keywordtype">void</span> ebpps_sample<T,A>::replace_content(TT&& item, <span class="keywordtype">double</span> theta) {</div> |
| <div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> c_ = theta;</div> |
| <div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> data_.clear();</div> |
| <div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> partial_item_.reset();</div> |
| <div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> <span class="keywordflow">if</span> (theta == 1.0) {</div> |
| <div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> data_.emplace_back(std::forward<TT>(item));</div> |
| <div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> partial_item_.emplace(std::forward<TT>(item));</div> |
| <div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> }</div> |
| <div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span>}</div> |
| <div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> </div> |
| <div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span><span class="keyword">auto</span> ebpps_sample<T,A>::get_sample() const -> result_type {</div> |
| <div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <span class="keywordtype">double</span> unused;</div> |
| <div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="keyword">const</span> <span class="keywordtype">double</span> c_frac = std::modf(c_, &unused);</div> |
| <div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> include_partial = next_double() < c_frac;</div> |
| <div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="keyword">const</span> uint32_t result_size = <span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(data_.size()) + (include_partial ? 1 : 0);</div> |
| <div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> </div> |
| <div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> result_type result;</div> |
| <div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> result.reserve(result_size);</div> |
| <div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> std::copy(data_.begin(), data_.end(), std::back_inserter(result));</div> |
| <div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="keywordflow">if</span> (include_partial)</div> |
| <div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> result.emplace_back(<span class="keyword">static_cast<</span><span class="keyword">const </span>T&<span class="keyword">></span>(*partial_item_));</div> |
| <div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> </div> |
| <div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <span class="keywordflow">return</span> result;</div> |
| <div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span>}</div> |
| <div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> </div> |
| <div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span><span class="keywordtype">void</span> ebpps_sample<T,A>::downsample(<span class="keywordtype">double</span> theta) {</div> |
| <div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="keywordflow">if</span> (theta >= 1.0) <span class="keywordflow">return</span>;</div> |
| <div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> </div> |
| <div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> <span class="keyword">const</span> <span class="keywordtype">double</span> new_c = theta * c_;</div> |
| <div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="keywordtype">double</span> new_c_int;</div> |
| <div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="keyword">const</span> <span class="keywordtype">double</span> new_c_frac = std::modf(new_c, &new_c_int);</div> |
| <div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> <span class="keywordtype">double</span> c_int;</div> |
| <div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <span class="keyword">const</span> <span class="keywordtype">double</span> c_frac = std::modf(c_, &c_int);</div> |
| <div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> </div> |
| <div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keywordflow">if</span> (new_c_int == 0.0) {</div> |
| <div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="comment">// no full items retained</span></div> |
| <div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <span class="keywordflow">if</span> (next_double() > (c_frac / c_)) {</div> |
| <div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> swap_with_partial();</div> |
| <div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> }</div> |
| <div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> data_.clear();</div> |
| <div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (new_c_int == c_int) {</div> |
| <div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="comment">// no items deleted</span></div> |
| <div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="keywordflow">if</span> (next_double() > (1 - theta * c_frac)/(1 - new_c_frac)) {</div> |
| <div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> swap_with_partial();</div> |
| <div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> }</div> |
| <div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="keywordflow">if</span> (next_double() < theta * c_frac) {</div> |
| <div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> <span class="comment">// subsample data in random order; last item is partial</span></div> |
| <div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> <span class="comment">// create sample size new_c_int then swap_with_partial()</span></div> |
| <div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> subsample(<span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(new_c_int));</div> |
| <div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> swap_with_partial();</div> |
| <div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <span class="comment">// create sample size new_c_int + 1 then move_one_to_partial)</span></div> |
| <div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> subsample(<span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(new_c_int) + 1);</div> |
| <div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> move_one_to_partial();</div> |
| <div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> }</div> |
| <div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> }</div> |
| <div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> </div> |
| <div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> <span class="keywordflow">if</span> (new_c == new_c_int)</div> |
| <div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> partial_item_.reset();</div> |
| <div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> </div> |
| <div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> c_ = new_c;</div> |
| <div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span>}</div> |
| <div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> </div> |
| <div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span><span class="keyword">template</span><<span class="keyword">typename</span> FwdSample></div> |
| <div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span><span class="keywordtype">void</span> ebpps_sample<T,A>::merge(FwdSample&& other) {</div> |
| <div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <span class="keywordtype">double</span> c_int;</div> |
| <div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> <span class="keyword">const</span> <span class="keywordtype">double</span> c_frac = std::modf(c_, &c_int);</div> |
| <div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> </div> |
| <div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> <span class="keywordtype">double</span> unused;</div> |
| <div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> <span class="keyword">const</span> <span class="keywordtype">double</span> other_c_frac = std::modf(other.c_, &unused);</div> |
| <div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> </div> |
| <div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <span class="comment">// update c_ here but do NOT recompute fractional part yet</span></div> |
| <div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> c_ += other.c_;</div> |
| <div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> </div> |
| <div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> <span class="keywordflow">for</span> (uint32_t i = 0; i < other.data_.size(); ++i)</div> |
| <div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> data_.emplace_back(conditional_forward<FwdSample>(other.data_[i]));</div> |
| <div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> </div> |
| <div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> <span class="comment">// This modifies the original algorithm slightly due to numeric</span></div> |
| <div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> <span class="comment">// precision issues. Specifically, the test if c_frac + other_c_frac == 1.0</span></div> |
| <div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> <span class="comment">// happens before tests for < 1.0 or > 1.0 and can also be triggered</span></div> |
| <div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> <span class="comment">// if c_ == floor(c_) (the updated value of c_, not the input).</span></div> |
| <div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> <span class="comment">//</span></div> |
| <div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> <span class="comment">// We can still run into issues where c_frac + other_c_frac == epsilon</span></div> |
| <div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> <span class="comment">// and the first case would have ideally triggered. As a result, we must</span></div> |
| <div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> <span class="comment">// check if the partial item exists before adding to the data_ vector.</span></div> |
| <div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> </div> |
| <div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> <span class="keywordflow">if</span> (c_frac == 0.0 && other_c_frac == 0.0) {</div> |
| <div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> partial_item_.reset();</div> |
| <div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (c_frac + other_c_frac == 1.0 || c_ == std::floor(c_)) {</div> |
| <div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> <span class="keywordflow">if</span> (next_double() <= c_frac) {</div> |
| <div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> <span class="keywordflow">if</span> (partial_item_)</div> |
| <div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> data_.emplace_back(std::move(*partial_item_));</div> |
| <div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> <span class="keywordflow">if</span> (other.partial_item_)</div> |
| <div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> data_.emplace_back(conditional_forward<FwdSample>(*other.partial_item_));</div> |
| <div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> }</div> |
| <div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> partial_item_.reset();</div> |
| <div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (c_frac + other_c_frac < 1.0) {</div> |
| <div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> <span class="keywordflow">if</span> (next_double() > c_frac / (c_frac + other_c_frac)) {</div> |
| <div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> set_partial(conditional_forward<FwdSample>(*other.partial_item_));</div> |
| <div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> }</div> |
| <div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> } <span class="keywordflow">else</span> { <span class="comment">// c_frac + other_c_frac > 1</span></div> |
| <div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> <span class="keywordflow">if</span> (next_double() <= (1 - c_frac) / ((1 - c_frac) + (1 - other_c_frac))) {</div> |
| <div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> data_.emplace_back(conditional_forward<FwdSample>(*other.partial_item_));</div> |
| <div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> data_.emplace_back(std::move(*partial_item_));</div> |
| <div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> partial_item_.reset();</div> |
| <div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> set_partial(conditional_forward<FwdSample>(*other.partial_item_));</div> |
| <div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> }</div> |
| <div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> }</div> |
| <div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span>}</div> |
| <div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> </div> |
| <div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span>string<A> ebpps_sample<T ,A>::to_string()<span class="keyword"> const </span>{</div> |
| <div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> std::ostringstream oss;</div> |
| <div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> oss << <span class="stringliteral">" sample:"</span> << std::endl;</div> |
| <div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> uint32_t idx = 0;</div> |
| <div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> T& item : data_)</div> |
| <div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> oss << <span class="stringliteral">"\t"</span> << idx++ << <span class="stringliteral">":\t"</span> << item << std::endl;</div> |
| <div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> oss << <span class="stringliteral">" partial: "</span>;</div> |
| <div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> <span class="keywordflow">if</span> (<span class="keywordtype">bool</span>(partial_item_))</div> |
| <div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> oss << (*partial_item_) << std::endl;</div> |
| <div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> <span class="keywordflow">else</span></div> |
| <div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> oss << <span class="stringliteral">"NULL"</span> << std::endl;</div> |
| <div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> </div> |
| <div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> <span class="keywordflow">return</span> oss.str();</div> |
| <div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span>}</div> |
| <div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> </div> |
| <div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span><span class="keywordtype">void</span> ebpps_sample<T,A>::subsample(uint32_t num_samples) {</div> |
| <div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> <span class="comment">// we can perform a Fisher-Yates style shuffle, stopping after</span></div> |
| <div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> <span class="comment">// num_samples points since subsequent swaps would only be</span></div> |
| <div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> <span class="comment">// between items after num_samples. This is valid since a</span></div> |
| <div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> <span class="comment">// point from anywhere in the initial array would be eligible</span></div> |
| <div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> <span class="comment">// to end up in the final subsample.</span></div> |
| <div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> </div> |
| <div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> <span class="keywordflow">if</span> (num_samples == data_.size()) <span class="keywordflow">return</span>;</div> |
| <div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> </div> |
| <div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> <span class="keyword">auto</span> erase_start = data_.begin();</div> |
| <div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> uint32_t data_len = <span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(data_.size());</div> |
| <div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> <span class="keywordflow">for</span> (uint32_t i = 0; i < num_samples; ++i, ++erase_start) {</div> |
| <div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> uint32_t j = i + random_idx(data_len - i);</div> |
| <div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> std::swap(data_[i], data_[j]);</div> |
| <div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> }</div> |
| <div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span> </div> |
| <div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span> data_.erase(erase_start, data_.end());</div> |
| <div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span>}</div> |
| <div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> </div> |
| <div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span><span class="keyword">template</span><<span class="keyword">typename</span> FwdItem></div> |
| <div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span><span class="keywordtype">void</span> ebpps_sample<T,A>::set_partial(FwdItem&& item) {</div> |
| <div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> <span class="keywordflow">if</span> (partial_item_)</div> |
| <div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> *partial_item_ = conditional_forward<FwdItem>(item);</div> |
| <div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span> <span class="keywordflow">else</span></div> |
| <div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> partial_item_.emplace(conditional_forward<FwdItem>(item));</div> |
| <div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span>}</div> |
| <div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span> </div> |
| <div class="line"><a id="l00216" 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 id="l00217" name="l00217"></a><span class="lineno"> 217</span><span class="keywordtype">void</span> ebpps_sample<T,A>::move_one_to_partial() {</div> |
| <div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span> <span class="keyword">const</span> <span class="keywordtype">size_t</span> idx = random_idx(<span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(data_.size()));</div> |
| <div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span> <span class="comment">// swap selected item to end so we can delete it easily</span></div> |
| <div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span> <span class="keyword">const</span> <span class="keywordtype">size_t</span> last_idx = data_.size() - 1;</div> |
| <div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span> <span class="keywordflow">if</span> (idx != last_idx) {</div> |
| <div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> std::swap(data_[idx], data_[last_idx]);</div> |
| <div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span> }</div> |
| <div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> </div> |
| <div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span> set_partial(std::move(data_[last_idx]));</div> |
| <div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span> </div> |
| <div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span> data_.pop_back();</div> |
| <div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span>}</div> |
| <div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span> </div> |
| <div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span><span class="keywordtype">void</span> ebpps_sample<T,A>::swap_with_partial() {</div> |
| <div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span> <span class="keywordflow">if</span> (partial_item_) {</div> |
| <div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> <span class="keyword">const</span> <span class="keywordtype">size_t</span> idx = random_idx(<span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(data_.size()));</div> |
| <div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span> std::swap(data_[idx], *partial_item_);</div> |
| <div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span> } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span> move_one_to_partial();</div> |
| <div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span> }</div> |
| <div class="line"><a id="l00238" name="l00238"></a><span class="lineno"> 238</span>}</div> |
| <div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span> </div> |
| <div class="line"><a id="l00240" name="l00240"></a><span class="lineno"> 240</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span><span class="keywordtype">void</span> ebpps_sample<T,A>::reset() {</div> |
| <div class="line"><a id="l00242" name="l00242"></a><span class="lineno"> 242</span> c_ = 0.0;</div> |
| <div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span> partial_item_.reset();</div> |
| <div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span> data_.clear();</div> |
| <div class="line"><a id="l00245" name="l00245"></a><span class="lineno"> 245</span>}</div> |
| <div class="line"><a id="l00246" name="l00246"></a><span class="lineno"> 246</span> </div> |
| <div class="line"><a id="l00247" name="l00247"></a><span class="lineno"> 247</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00248" name="l00248"></a><span class="lineno"> 248</span><span class="keywordtype">double</span> ebpps_sample<T,A>::get_c()<span class="keyword"> const </span>{</div> |
| <div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span> <span class="keywordflow">return</span> c_;</div> |
| <div class="line"><a id="l00250" name="l00250"></a><span class="lineno"> 250</span>}</div> |
| <div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span> </div> |
| <div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span><span class="keyword">auto</span> ebpps_sample<T,A>::get_full_items() const -> result_type {</div> |
| <div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span> <span class="keywordflow">return</span> result_type(data_);</div> |
| <div class="line"><a id="l00255" name="l00255"></a><span class="lineno"> 255</span>}</div> |
| <div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span> </div> |
| <div class="line"><a id="l00257" name="l00257"></a><span class="lineno"> 257</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00258" name="l00258"></a><span class="lineno"> 258</span><span class="keywordtype">bool</span> ebpps_sample<T,A>::has_partial_item()<span class="keyword"> const </span>{</div> |
| <div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span> <span class="keywordflow">return</span> bool(partial_item_);</div> |
| <div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span>}</div> |
| <div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span> </div> |
| <div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span>T ebpps_sample<T,A>::get_partial_item()<span class="keyword"> const </span>{</div> |
| <div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span> <span class="keywordflow">if</span> (!partial_item_) <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"Call to get_partial_item() when no partial item exists"</span>);</div> |
| <div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span> <span class="keywordflow">return</span> *partial_item_;</div> |
| <div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span>}</div> |
| <div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span> </div> |
| <div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span>uint32_t ebpps_sample<T,A>::random_idx(uint32_t max) {</div> |
| <div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span> <span class="keyword">static</span> std::uniform_int_distribution<uint32_t> dist;</div> |
| <div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span> <span class="keywordflow">return</span> dist(random_utils::rand, std::uniform_int_distribution<uint32_t>::param_type(0, max - 1));</div> |
| <div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span>}</div> |
| <div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span> </div> |
| <div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span><span class="keywordtype">double</span> ebpps_sample<T,A>::next_double() {</div> |
| <div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span> <span class="keywordflow">return</span> random_utils::next_double(random_utils::rand);</div> |
| <div class="line"><a id="l00277" name="l00277"></a><span class="lineno"> 277</span>}</div> |
| <div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span> </div> |
| <div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span>uint32_t ebpps_sample<T,A>::get_num_retained_items()<span class="keyword"> const </span>{</div> |
| <div class="line"><a id="l00281" name="l00281"></a><span class="lineno"> 281</span> <span class="keywordflow">return</span> <span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(data_.size() + (partial_item_ ? 1 : 0));</div> |
| <div class="line"><a id="l00282" name="l00282"></a><span class="lineno"> 282</span>}</div> |
| <div class="line"><a id="l00283" name="l00283"></a><span class="lineno"> 283</span> </div> |
| <div class="line"><a id="l00284" name="l00284"></a><span class="lineno"> 284</span><span class="comment">// implementation for fixed-size arithmetic types (integral and floating point)</span></div> |
| <div class="line"><a id="l00285" name="l00285"></a><span class="lineno"> 285</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00286" name="l00286"></a><span class="lineno"> 286</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 id="l00287" name="l00287"></a><span class="lineno"> 287</span><span class="keywordtype">size_t</span> ebpps_sample<T, A>::get_serialized_size_bytes(<span class="keyword">const</span> SerDe&)<span class="keyword"> const </span>{</div> |
| <div class="line"><a id="l00288" name="l00288"></a><span class="lineno"> 288</span> <span class="keywordflow">if</span> (c_ == 0.0)</div> |
| <div class="line"><a id="l00289" name="l00289"></a><span class="lineno"> 289</span> <span class="keywordflow">return</span> 0;</div> |
| <div class="line"><a id="l00290" name="l00290"></a><span class="lineno"> 290</span> <span class="keywordflow">else</span></div> |
| <div class="line"><a id="l00291" name="l00291"></a><span class="lineno"> 291</span> <span class="keywordflow">return</span> <span class="keyword">sizeof</span>(c_) + (data_.size() + (partial_item_ ? 1 : 0)) * <span class="keyword">sizeof</span>(T);</div> |
| <div class="line"><a id="l00292" name="l00292"></a><span class="lineno"> 292</span>}</div> |
| <div class="line"><a id="l00293" name="l00293"></a><span class="lineno"> 293</span> </div> |
| <div class="line"><a id="l00294" name="l00294"></a><span class="lineno"> 294</span><span class="comment">// implementation for all other types</span></div> |
| <div class="line"><a id="l00295" 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 id="l00296" 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 id="l00297" name="l00297"></a><span class="lineno"> 297</span><span class="keywordtype">size_t</span> ebpps_sample<T, A>::get_serialized_size_bytes(<span class="keyword">const</span> SerDe& sd)<span class="keyword"> const </span>{</div> |
| <div class="line"><a id="l00298" name="l00298"></a><span class="lineno"> 298</span> <span class="keywordflow">if</span> (c_ == 0.0) <span class="keywordflow">return</span> 0;</div> |
| <div class="line"><a id="l00299" name="l00299"></a><span class="lineno"> 299</span> </div> |
| <div class="line"><a id="l00300" name="l00300"></a><span class="lineno"> 300</span> <span class="keywordtype">size_t</span> num_bytes = <span class="keyword">sizeof</span>(c_);</div> |
| <div class="line"><a id="l00301" name="l00301"></a><span class="lineno"> 301</span> <span class="keywordflow">for</span> (<span class="keyword">auto</span> it : data_)</div> |
| <div class="line"><a id="l00302" name="l00302"></a><span class="lineno"> 302</span> num_bytes += sd.size_of_item(it);</div> |
| <div class="line"><a id="l00303" name="l00303"></a><span class="lineno"> 303</span> </div> |
| <div class="line"><a id="l00304" name="l00304"></a><span class="lineno"> 304</span> <span class="keywordflow">if</span> (partial_item_)</div> |
| <div class="line"><a id="l00305" name="l00305"></a><span class="lineno"> 305</span> num_bytes += sd.size_of_item(*partial_item_);</div> |
| <div class="line"><a id="l00306" name="l00306"></a><span class="lineno"> 306</span> </div> |
| <div class="line"><a id="l00307" name="l00307"></a><span class="lineno"> 307</span> <span class="keywordflow">return</span> num_bytes;</div> |
| <div class="line"><a id="l00308" name="l00308"></a><span class="lineno"> 308</span>}</div> |
| <div class="line"><a id="l00309" name="l00309"></a><span class="lineno"> 309</span> </div> |
| <div class="line"><a id="l00310" name="l00310"></a><span class="lineno"> 310</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00311" name="l00311"></a><span class="lineno"> 311</span><span class="keyword">template</span><<span class="keyword">typename</span> SerDe></div> |
| <div class="line"><a id="l00312" name="l00312"></a><span class="lineno"> 312</span><span class="keywordtype">size_t</span> ebpps_sample<T,A>::serialize(uint8_t* ptr, <span class="keyword">const</span> uint8_t* end_ptr, <span class="keyword">const</span> SerDe& sd)<span class="keyword"> const </span>{</div> |
| <div class="line"><a id="l00313" name="l00313"></a><span class="lineno"> 313</span> uint8_t* st_ptr = ptr;</div> |
| <div class="line"><a id="l00314" name="l00314"></a><span class="lineno"> 314</span> </div> |
| <div class="line"><a id="l00315" name="l00315"></a><span class="lineno"> 315</span> ensure_minimum_memory(end_ptr - ptr, <span class="keyword">sizeof</span>(c_));</div> |
| <div class="line"><a id="l00316" name="l00316"></a><span class="lineno"> 316</span> ptr += copy_to_mem(c_, ptr);</div> |
| <div class="line"><a id="l00317" name="l00317"></a><span class="lineno"> 317</span> </div> |
| <div class="line"><a id="l00318" name="l00318"></a><span class="lineno"> 318</span> ptr += sd.serialize(ptr, end_ptr - ptr, data_.data(), <span class="keyword">static_cast<</span><span class="keywordtype">unsigned</span><span class="keyword">></span>(data_.size()));</div> |
| <div class="line"><a id="l00319" name="l00319"></a><span class="lineno"> 319</span> </div> |
| <div class="line"><a id="l00320" name="l00320"></a><span class="lineno"> 320</span> <span class="keywordflow">if</span> (partial_item_) {</div> |
| <div class="line"><a id="l00321" name="l00321"></a><span class="lineno"> 321</span> ptr += sd.serialize(ptr, end_ptr - ptr, &*partial_item_, 1);</div> |
| <div class="line"><a id="l00322" name="l00322"></a><span class="lineno"> 322</span> }</div> |
| <div class="line"><a id="l00323" name="l00323"></a><span class="lineno"> 323</span> </div> |
| <div class="line"><a id="l00324" name="l00324"></a><span class="lineno"> 324</span> <span class="keywordflow">return</span> ptr - st_ptr;</div> |
| <div class="line"><a id="l00325" name="l00325"></a><span class="lineno"> 325</span>}</div> |
| <div class="line"><a id="l00326" name="l00326"></a><span class="lineno"> 326</span> </div> |
| <div class="line"><a id="l00327" name="l00327"></a><span class="lineno"> 327</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00328" name="l00328"></a><span class="lineno"> 328</span><span class="keyword">template</span><<span class="keyword">typename</span> SerDe></div> |
| <div class="line"><a id="l00329" name="l00329"></a><span class="lineno"> 329</span><span class="keywordtype">void</span> ebpps_sample<T,A>::serialize(std::ostream& os, <span class="keyword">const</span> SerDe& sd)<span class="keyword"> const </span>{</div> |
| <div class="line"><a id="l00330" name="l00330"></a><span class="lineno"> 330</span> write(os, c_);</div> |
| <div class="line"><a id="l00331" name="l00331"></a><span class="lineno"> 331</span> </div> |
| <div class="line"><a id="l00332" name="l00332"></a><span class="lineno"> 332</span> sd.serialize(os, data_.data(), <span class="keyword">static_cast<</span><span class="keywordtype">unsigned</span><span class="keyword">></span>(data_.size()));</div> |
| <div class="line"><a id="l00333" name="l00333"></a><span class="lineno"> 333</span> </div> |
| <div class="line"><a id="l00334" name="l00334"></a><span class="lineno"> 334</span> <span class="keywordflow">if</span> (partial_item_)</div> |
| <div class="line"><a id="l00335" name="l00335"></a><span class="lineno"> 335</span> sd.serialize(os, &*partial_item_, 1);</div> |
| <div class="line"><a id="l00336" name="l00336"></a><span class="lineno"> 336</span> </div> |
| <div class="line"><a id="l00337" name="l00337"></a><span class="lineno"> 337</span> <span class="keywordflow">if</span> (!os.good()) <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"error writing to std::ostream"</span>);</div> |
| <div class="line"><a id="l00338" name="l00338"></a><span class="lineno"> 338</span>}</div> |
| <div class="line"><a id="l00339" name="l00339"></a><span class="lineno"> 339</span> </div> |
| <div class="line"><a id="l00340" name="l00340"></a><span class="lineno"> 340</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00341" name="l00341"></a><span class="lineno"> 341</span><span class="keyword">template</span><<span class="keyword">typename</span> SerDe></div> |
| <div class="line"><a id="l00342" name="l00342"></a><span class="lineno"> 342</span>std::pair<ebpps_sample<T, A>, <span class="keywordtype">size_t</span>> ebpps_sample<T, A>::deserialize(<span class="keyword">const</span> uint8_t* ptr, <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 id="l00343" name="l00343"></a><span class="lineno"> 343</span> <span class="keyword">const</span> uint8_t* st_ptr = ptr;</div> |
| <div class="line"><a id="l00344" name="l00344"></a><span class="lineno"> 344</span> <span class="keyword">const</span> uint8_t* end_ptr = ptr + size;</div> |
| <div class="line"><a id="l00345" name="l00345"></a><span class="lineno"> 345</span> </div> |
| <div class="line"><a id="l00346" name="l00346"></a><span class="lineno"> 346</span> ensure_minimum_memory(size, <span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));</div> |
| <div class="line"><a id="l00347" name="l00347"></a><span class="lineno"> 347</span> <span class="keywordtype">double</span> c;</div> |
| <div class="line"><a id="l00348" name="l00348"></a><span class="lineno"> 348</span> ptr += copy_from_mem(ptr, c);</div> |
| <div class="line"><a id="l00349" name="l00349"></a><span class="lineno"> 349</span> <span class="keywordflow">if</span> (c < 0.0)</div> |
| <div class="line"><a id="l00350" name="l00350"></a><span class="lineno"> 350</span> <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"sketch image has C < 0.0 during deserializaiton"</span>);</div> |
| <div class="line"><a id="l00351" name="l00351"></a><span class="lineno"> 351</span> </div> |
| <div class="line"><a id="l00352" name="l00352"></a><span class="lineno"> 352</span> <span class="keywordtype">double</span> c_int;</div> |
| <div class="line"><a id="l00353" name="l00353"></a><span class="lineno"> 353</span> <span class="keyword">const</span> <span class="keywordtype">double</span> c_frac = std::modf(c, &c_int);</div> |
| <div class="line"><a id="l00354" name="l00354"></a><span class="lineno"> 354</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> has_partial = c_frac != 0.0;</div> |
| <div class="line"><a id="l00355" name="l00355"></a><span class="lineno"> 355</span> </div> |
| <div class="line"><a id="l00356" name="l00356"></a><span class="lineno"> 356</span> <span class="keyword">const</span> uint32_t num_full_items = <span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(c_int);</div> |
| <div class="line"><a id="l00357" name="l00357"></a><span class="lineno"> 357</span> A alloc(allocator);</div> |
| <div class="line"><a id="l00358" name="l00358"></a><span class="lineno"> 358</span> std::unique_ptr<T, items_deleter> items(alloc.allocate(num_full_items), items_deleter(allocator, <span class="keyword">false</span>, num_full_items));</div> |
| <div class="line"><a id="l00359" name="l00359"></a><span class="lineno"> 359</span> ptr += sd.deserialize(ptr, end_ptr - ptr, items.get(), num_full_items);</div> |
| <div class="line"><a id="l00360" name="l00360"></a><span class="lineno"> 360</span> <span class="comment">// serde did not throw, enable destructors</span></div> |
| <div class="line"><a id="l00361" name="l00361"></a><span class="lineno"> 361</span> items.get_deleter().set_destroy(<span class="keyword">true</span>);</div> |
| <div class="line"><a id="l00362" name="l00362"></a><span class="lineno"> 362</span> std::vector<T, A> data(std::make_move_iterator(items.get()),</div> |
| <div class="line"><a id="l00363" name="l00363"></a><span class="lineno"> 363</span> std::make_move_iterator(items.get() + num_full_items),</div> |
| <div class="line"><a id="l00364" name="l00364"></a><span class="lineno"> 364</span> allocator);</div> |
| <div class="line"><a id="l00365" name="l00365"></a><span class="lineno"> 365</span> </div> |
| <div class="line"><a id="l00366" name="l00366"></a><span class="lineno"> 366</span> optional<T> partial_item;</div> |
| <div class="line"><a id="l00367" name="l00367"></a><span class="lineno"> 367</span> <span class="keywordflow">if</span> (has_partial) {</div> |
| <div class="line"><a id="l00368" name="l00368"></a><span class="lineno"> 368</span> optional<T> tmp; <span class="comment">// space to deserialize</span></div> |
| <div class="line"><a id="l00369" name="l00369"></a><span class="lineno"> 369</span> ptr += sd.deserialize(ptr, end_ptr - ptr, &*tmp, 1);</div> |
| <div class="line"><a id="l00370" name="l00370"></a><span class="lineno"> 370</span> <span class="comment">// serde did not throw so place item and clean up</span></div> |
| <div class="line"><a id="l00371" name="l00371"></a><span class="lineno"> 371</span> partial_item.emplace(*tmp);</div> |
| <div class="line"><a id="l00372" name="l00372"></a><span class="lineno"> 372</span> (*tmp).~T();</div> |
| <div class="line"><a id="l00373" name="l00373"></a><span class="lineno"> 373</span> }</div> |
| <div class="line"><a id="l00374" name="l00374"></a><span class="lineno"> 374</span> </div> |
| <div class="line"><a id="l00375" name="l00375"></a><span class="lineno"> 375</span> <span class="keywordflow">return</span> std::pair<ebpps_sample<T,A>, <span class="keywordtype">size_t</span>>(</div> |
| <div class="line"><a id="l00376" name="l00376"></a><span class="lineno"> 376</span> ebpps_sample<T,A>(std::move(data), std::move(partial_item), c, allocator),</div> |
| <div class="line"><a id="l00377" name="l00377"></a><span class="lineno"> 377</span> ptr - st_ptr);</div> |
| <div class="line"><a id="l00378" name="l00378"></a><span class="lineno"> 378</span>}</div> |
| <div class="line"><a id="l00379" name="l00379"></a><span class="lineno"> 379</span> </div> |
| <div class="line"><a id="l00380" name="l00380"></a><span class="lineno"> 380</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00381" name="l00381"></a><span class="lineno"> 381</span><span class="keyword">template</span><<span class="keyword">typename</span> SerDe></div> |
| <div class="line"><a id="l00382" name="l00382"></a><span class="lineno"> 382</span>ebpps_sample<T, A> ebpps_sample<T, A>::deserialize(std::istream& is, <span class="keyword">const</span> SerDe& sd, <span class="keyword">const</span> A& allocator) {</div> |
| <div class="line"><a id="l00383" name="l00383"></a><span class="lineno"> 383</span> <span class="keyword">const</span> <span class="keywordtype">double</span> c = read<double>(is);</div> |
| <div class="line"><a id="l00384" name="l00384"></a><span class="lineno"> 384</span> <span class="keywordflow">if</span> (c < 0.0)</div> |
| <div class="line"><a id="l00385" name="l00385"></a><span class="lineno"> 385</span> <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"sketch image has C < 0.0 during deserializaiton"</span>);</div> |
| <div class="line"><a id="l00386" name="l00386"></a><span class="lineno"> 386</span> </div> |
| <div class="line"><a id="l00387" name="l00387"></a><span class="lineno"> 387</span> <span class="keywordtype">double</span> c_int;</div> |
| <div class="line"><a id="l00388" name="l00388"></a><span class="lineno"> 388</span> <span class="keyword">const</span> <span class="keywordtype">double</span> c_frac = std::modf(c, &c_int);</div> |
| <div class="line"><a id="l00389" name="l00389"></a><span class="lineno"> 389</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> has_partial = c_frac != 0.0;</div> |
| <div class="line"><a id="l00390" name="l00390"></a><span class="lineno"> 390</span> </div> |
| <div class="line"><a id="l00391" name="l00391"></a><span class="lineno"> 391</span> <span class="keyword">const</span> uint32_t num_full_items = <span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(c_int);</div> |
| <div class="line"><a id="l00392" name="l00392"></a><span class="lineno"> 392</span> A alloc(allocator);</div> |
| <div class="line"><a id="l00393" name="l00393"></a><span class="lineno"> 393</span> std::unique_ptr<T, items_deleter> items(alloc.allocate(num_full_items), items_deleter(allocator, <span class="keyword">false</span>, num_full_items));</div> |
| <div class="line"><a id="l00394" name="l00394"></a><span class="lineno"> 394</span> sd.deserialize(is, items.get(), num_full_items);</div> |
| <div class="line"><a id="l00395" name="l00395"></a><span class="lineno"> 395</span> <span class="comment">// serde did not throw, enable destructors</span></div> |
| <div class="line"><a id="l00396" name="l00396"></a><span class="lineno"> 396</span> items.get_deleter().set_destroy(<span class="keyword">true</span>);</div> |
| <div class="line"><a id="l00397" name="l00397"></a><span class="lineno"> 397</span> std::vector<T, A> data(std::make_move_iterator(items.get()),</div> |
| <div class="line"><a id="l00398" name="l00398"></a><span class="lineno"> 398</span> std::make_move_iterator(items.get() + num_full_items),</div> |
| <div class="line"><a id="l00399" name="l00399"></a><span class="lineno"> 399</span> allocator);</div> |
| <div class="line"><a id="l00400" name="l00400"></a><span class="lineno"> 400</span> </div> |
| <div class="line"><a id="l00401" name="l00401"></a><span class="lineno"> 401</span> optional<T> partial_item;</div> |
| <div class="line"><a id="l00402" name="l00402"></a><span class="lineno"> 402</span> <span class="keywordflow">if</span> (has_partial) {</div> |
| <div class="line"><a id="l00403" name="l00403"></a><span class="lineno"> 403</span> optional<T> tmp; <span class="comment">// space to deserialize</span></div> |
| <div class="line"><a id="l00404" name="l00404"></a><span class="lineno"> 404</span> sd.deserialize(is, &*tmp, 1);</div> |
| <div class="line"><a id="l00405" name="l00405"></a><span class="lineno"> 405</span> <span class="comment">// serde did not throw so place item and clean up</span></div> |
| <div class="line"><a id="l00406" name="l00406"></a><span class="lineno"> 406</span> partial_item.emplace(*tmp);</div> |
| <div class="line"><a id="l00407" name="l00407"></a><span class="lineno"> 407</span> (*tmp).~T();</div> |
| <div class="line"><a id="l00408" name="l00408"></a><span class="lineno"> 408</span> }</div> |
| <div class="line"><a id="l00409" name="l00409"></a><span class="lineno"> 409</span> </div> |
| <div class="line"><a id="l00410" name="l00410"></a><span class="lineno"> 410</span> <span class="keywordflow">if</span> (!is.good()) <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"error reading from std::istream"</span>);</div> |
| <div class="line"><a id="l00411" name="l00411"></a><span class="lineno"> 411</span> </div> |
| <div class="line"><a id="l00412" name="l00412"></a><span class="lineno"> 412</span> <span class="keywordflow">return</span> ebpps_sample<T,A>(std::move(data), std::move(partial_item), c, allocator);</div> |
| <div class="line"><a id="l00413" name="l00413"></a><span class="lineno"> 413</span>}</div> |
| <div class="line"><a id="l00414" name="l00414"></a><span class="lineno"> 414</span> </div> |
| <div class="line"><a id="l00415" name="l00415"></a><span class="lineno"> 415</span> </div> |
| <div class="line"><a id="l00416" name="l00416"></a><span class="lineno"> 416</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00417" name="l00417"></a><span class="lineno"> 417</span><span class="keyword">typename</span> ebpps_sample<T, A>::const_iterator ebpps_sample<T, A>::begin()<span class="keyword"> const </span>{</div> |
| <div class="line"><a id="l00418" name="l00418"></a><span class="lineno"> 418</span> <span class="keywordflow">return</span> const_iterator(<span class="keyword">this</span>);</div> |
| <div class="line"><a id="l00419" name="l00419"></a><span class="lineno"> 419</span>}</div> |
| <div class="line"><a id="l00420" name="l00420"></a><span class="lineno"> 420</span> </div> |
| <div class="line"><a id="l00421" name="l00421"></a><span class="lineno"> 421</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00422" name="l00422"></a><span class="lineno"> 422</span><span class="keyword">typename</span> ebpps_sample<T, A>::const_iterator ebpps_sample<T, A>::end()<span class="keyword"> const </span>{</div> |
| <div class="line"><a id="l00423" name="l00423"></a><span class="lineno"> 423</span> <span class="keywordflow">return</span> const_iterator(<span class="keyword">nullptr</span>);</div> |
| <div class="line"><a id="l00424" name="l00424"></a><span class="lineno"> 424</span>}</div> |
| <div class="line"><a id="l00425" name="l00425"></a><span class="lineno"> 425</span> </div> |
| <div class="line"><a id="l00426" name="l00426"></a><span class="lineno"> 426</span> </div> |
| <div class="line"><a id="l00427" name="l00427"></a><span class="lineno"> 427</span><span class="comment">// -------- ebpps_sketch::const_iterator implementation ---------</span></div> |
| <div class="line"><a id="l00428" name="l00428"></a><span class="lineno"> 428</span> </div> |
| <div class="line"><a id="l00429" name="l00429"></a><span class="lineno"> 429</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00430" name="l00430"></a><span class="lineno"> 430</span>ebpps_sample<T, A>::const_iterator::const_iterator(<span class="keyword">const</span> ebpps_sample* sample) :</div> |
| <div class="line"><a id="l00431" name="l00431"></a><span class="lineno"> 431</span> sample_(sample),</div> |
| <div class="line"><a id="l00432" name="l00432"></a><span class="lineno"> 432</span> idx_(0),</div> |
| <div class="line"><a id="l00433" name="l00433"></a><span class="lineno"> 433</span> use_partial_(false)</div> |
| <div class="line"><a id="l00434" name="l00434"></a><span class="lineno"> 434</span>{</div> |
| <div class="line"><a id="l00435" name="l00435"></a><span class="lineno"> 435</span> <span class="keywordflow">if</span> (sample == <span class="keyword">nullptr</span>)</div> |
| <div class="line"><a id="l00436" name="l00436"></a><span class="lineno"> 436</span> <span class="keywordflow">return</span>;</div> |
| <div class="line"><a id="l00437" name="l00437"></a><span class="lineno"> 437</span> </div> |
| <div class="line"><a id="l00438" name="l00438"></a><span class="lineno"> 438</span> <span class="comment">// determine in advance if we use the partial item</span></div> |
| <div class="line"><a id="l00439" name="l00439"></a><span class="lineno"> 439</span> <span class="keywordtype">double</span> c_int;</div> |
| <div class="line"><a id="l00440" name="l00440"></a><span class="lineno"> 440</span> <span class="keyword">const</span> <span class="keywordtype">double</span> c_frac = std::modf(sample_->get_c(), &c_int);</div> |
| <div class="line"><a id="l00441" name="l00441"></a><span class="lineno"> 441</span> use_partial_ = sample->next_double() < c_frac;</div> |
| <div class="line"><a id="l00442" name="l00442"></a><span class="lineno"> 442</span> </div> |
| <div class="line"><a id="l00443" name="l00443"></a><span class="lineno"> 443</span> <span class="comment">// sample with no items</span></div> |
| <div class="line"><a id="l00444" name="l00444"></a><span class="lineno"> 444</span> <span class="keywordflow">if</span> (sample_->data_.size() == 0 && use_partial_) {</div> |
| <div class="line"><a id="l00445" name="l00445"></a><span class="lineno"> 445</span> idx_ = PARTIAL_IDX;</div> |
| <div class="line"><a id="l00446" name="l00446"></a><span class="lineno"> 446</span> }</div> |
| <div class="line"><a id="l00447" name="l00447"></a><span class="lineno"> 447</span> </div> |
| <div class="line"><a id="l00448" name="l00448"></a><span class="lineno"> 448</span> <span class="keywordflow">if</span> (sample_->c_== 0.0 || (sample_->data_.size() == 0 && !sample_->has_partial_item())) { sample_ = <span class="keyword">nullptr</span>; }</div> |
| <div class="line"><a id="l00449" name="l00449"></a><span class="lineno"> 449</span>}</div> |
| <div class="line"><a id="l00450" name="l00450"></a><span class="lineno"> 450</span> </div> |
| <div class="line"><a id="l00451" name="l00451"></a><span class="lineno"> 451</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00452" name="l00452"></a><span class="lineno"> 452</span>ebpps_sample<T, A>::const_iterator::const_iterator(<span class="keyword">const</span> const_iterator& other) :</div> |
| <div class="line"><a id="l00453" name="l00453"></a><span class="lineno"> 453</span> sample_(other.sample_),</div> |
| <div class="line"><a id="l00454" name="l00454"></a><span class="lineno"> 454</span> idx_(other.idx_),</div> |
| <div class="line"><a id="l00455" name="l00455"></a><span class="lineno"> 455</span> use_partial_(other.use_partial_)</div> |
| <div class="line"><a id="l00456" name="l00456"></a><span class="lineno"> 456</span>{}</div> |
| <div class="line"><a id="l00457" name="l00457"></a><span class="lineno"> 457</span> </div> |
| <div class="line"><a id="l00458" name="l00458"></a><span class="lineno"> 458</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00459" name="l00459"></a><span class="lineno"> 459</span><span class="keyword">typename</span> ebpps_sample<T, A>::const_iterator& ebpps_sample<T, A>::const_iterator::operator++() {</div> |
| <div class="line"><a id="l00460" name="l00460"></a><span class="lineno"> 460</span> <span class="keywordflow">if</span> (sample_ == <span class="keyword">nullptr</span>)</div> |
| <div class="line"><a id="l00461" name="l00461"></a><span class="lineno"> 461</span> <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div> |
| <div class="line"><a id="l00462" name="l00462"></a><span class="lineno"> 462</span> <span class="keywordflow">else</span> <span class="keywordflow">if</span> (idx_ == PARTIAL_IDX) {</div> |
| <div class="line"><a id="l00463" name="l00463"></a><span class="lineno"> 463</span> idx_ = sample_->data_.size();</div> |
| <div class="line"><a id="l00464" name="l00464"></a><span class="lineno"> 464</span> sample_ = <span class="keyword">nullptr</span>;</div> |
| <div class="line"><a id="l00465" name="l00465"></a><span class="lineno"> 465</span> <span class="keywordflow">return</span> * <span class="keyword">this</span>;</div> |
| <div class="line"><a id="l00466" name="l00466"></a><span class="lineno"> 466</span> }</div> |
| <div class="line"><a id="l00467" name="l00467"></a><span class="lineno"> 467</span> </div> |
| <div class="line"><a id="l00468" name="l00468"></a><span class="lineno"> 468</span> ++idx_;</div> |
| <div class="line"><a id="l00469" name="l00469"></a><span class="lineno"> 469</span> </div> |
| <div class="line"><a id="l00470" name="l00470"></a><span class="lineno"> 470</span> <span class="keywordflow">if</span> (idx_ == sample_->data_.size()) {</div> |
| <div class="line"><a id="l00471" name="l00471"></a><span class="lineno"> 471</span> <span class="keywordflow">if</span> (use_partial_)</div> |
| <div class="line"><a id="l00472" name="l00472"></a><span class="lineno"> 472</span> idx_ = PARTIAL_IDX;</div> |
| <div class="line"><a id="l00473" name="l00473"></a><span class="lineno"> 473</span> <span class="keywordflow">else</span></div> |
| <div class="line"><a id="l00474" name="l00474"></a><span class="lineno"> 474</span> sample_ = <span class="keyword">nullptr</span>;</div> |
| <div class="line"><a id="l00475" name="l00475"></a><span class="lineno"> 475</span> }</div> |
| <div class="line"><a id="l00476" name="l00476"></a><span class="lineno"> 476</span> </div> |
| <div class="line"><a id="l00477" name="l00477"></a><span class="lineno"> 477</span> <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div> |
| <div class="line"><a id="l00478" name="l00478"></a><span class="lineno"> 478</span>}</div> |
| <div class="line"><a id="l00479" name="l00479"></a><span class="lineno"> 479</span> </div> |
| <div class="line"><a id="l00480" name="l00480"></a><span class="lineno"> 480</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00481" name="l00481"></a><span class="lineno"> 481</span><span class="keyword">typename</span> ebpps_sample<T, A>::const_iterator& ebpps_sample<T, A>::const_iterator::operator++(<span class="keywordtype">int</span>) {</div> |
| <div class="line"><a id="l00482" name="l00482"></a><span class="lineno"> 482</span> const_iterator tmp(*<span class="keyword">this</span>);</div> |
| <div class="line"><a id="l00483" name="l00483"></a><span class="lineno"> 483</span> operator++();</div> |
| <div class="line"><a id="l00484" name="l00484"></a><span class="lineno"> 484</span> <span class="keywordflow">return</span> tmp;</div> |
| <div class="line"><a id="l00485" name="l00485"></a><span class="lineno"> 485</span>}</div> |
| <div class="line"><a id="l00486" name="l00486"></a><span class="lineno"> 486</span> </div> |
| <div class="line"><a id="l00487" name="l00487"></a><span class="lineno"> 487</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00488" name="l00488"></a><span class="lineno"> 488</span><span class="keywordtype">bool</span> ebpps_sample<T, A>::const_iterator::operator==(<span class="keyword">const</span> const_iterator& other)<span class="keyword"> const </span>{</div> |
| <div class="line"><a id="l00489" name="l00489"></a><span class="lineno"> 489</span> <span class="keywordflow">if</span> (sample_ != other.sample_) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a id="l00490" name="l00490"></a><span class="lineno"> 490</span> <span class="keywordflow">if</span> (sample_ == <span class="keyword">nullptr</span>) <span class="keywordflow">return</span> <span class="keyword">true</span>; <span class="comment">// end (and we know other.sample_ is also null)</span></div> |
| <div class="line"><a id="l00491" name="l00491"></a><span class="lineno"> 491</span> <span class="keywordflow">return</span> idx_ == other.idx_;</div> |
| <div class="line"><a id="l00492" name="l00492"></a><span class="lineno"> 492</span>}</div> |
| <div class="line"><a id="l00493" name="l00493"></a><span class="lineno"> 493</span> </div> |
| <div class="line"><a id="l00494" name="l00494"></a><span class="lineno"> 494</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00495" name="l00495"></a><span class="lineno"> 495</span><span class="keywordtype">bool</span> ebpps_sample<T, A>::const_iterator::operator!=(<span class="keyword">const</span> const_iterator& other)<span class="keyword"> const </span>{</div> |
| <div class="line"><a id="l00496" name="l00496"></a><span class="lineno"> 496</span> <span class="keywordflow">return</span> !operator==(other);</div> |
| <div class="line"><a id="l00497" name="l00497"></a><span class="lineno"> 497</span>}</div> |
| <div class="line"><a id="l00498" name="l00498"></a><span class="lineno"> 498</span> </div> |
| <div class="line"><a id="l00499" name="l00499"></a><span class="lineno"> 499</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00500" name="l00500"></a><span class="lineno"> 500</span><span class="keyword">auto</span> ebpps_sample<T, A>::const_iterator::operator*() const -> reference {</div> |
| <div class="line"><a id="l00501" name="l00501"></a><span class="lineno"> 501</span> <span class="keywordflow">if</span> (idx_ == PARTIAL_IDX)</div> |
| <div class="line"><a id="l00502" name="l00502"></a><span class="lineno"> 502</span> <span class="keywordflow">return</span> *(sample_->partial_item_);</div> |
| <div class="line"><a id="l00503" name="l00503"></a><span class="lineno"> 503</span> <span class="keywordflow">else</span></div> |
| <div class="line"><a id="l00504" name="l00504"></a><span class="lineno"> 504</span> <span class="keywordflow">return</span> sample_->data_[idx_];</div> |
| <div class="line"><a id="l00505" name="l00505"></a><span class="lineno"> 505</span>}</div> |
| <div class="line"><a id="l00506" name="l00506"></a><span class="lineno"> 506</span> </div> |
| <div class="line"><a id="l00507" name="l00507"></a><span class="lineno"> 507</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00508" name="l00508"></a><span class="lineno"> 508</span><span class="keyword">auto</span> ebpps_sample<T, A>::const_iterator::operator->() const -> pointer {</div> |
| <div class="line"><a id="l00509" name="l00509"></a><span class="lineno"> 509</span> <span class="keywordflow">return</span> **<span class="keyword">this</span>;</div> |
| <div class="line"><a id="l00510" name="l00510"></a><span class="lineno"> 510</span>}</div> |
| <div class="line"><a id="l00511" name="l00511"></a><span class="lineno"> 511</span> </div> |
| <div class="line"><a id="l00512" name="l00512"></a><span class="lineno"> 512</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00513" name="l00513"></a><span class="lineno"> 513</span><span class="keyword">class </span>ebpps_sample<T, A>::items_deleter {</div> |
| <div class="line"><a id="l00514" name="l00514"></a><span class="lineno"> 514</span> <span class="keyword">public</span>:</div> |
| <div class="line"><a id="l00515" name="l00515"></a><span class="lineno"> 515</span> items_deleter(<span class="keyword">const</span> A& allocator, <span class="keywordtype">bool</span> destroy, <span class="keywordtype">size_t</span> num): allocator_(allocator), destroy_(destroy), num_(num) {}</div> |
| <div class="line"><a id="l00516" name="l00516"></a><span class="lineno"> 516</span> <span class="keywordtype">void</span> operator() (T* ptr) {</div> |
| <div class="line"><a id="l00517" name="l00517"></a><span class="lineno"> 517</span> <span class="keywordflow">if</span> (ptr != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a id="l00518" name="l00518"></a><span class="lineno"> 518</span> <span class="keywordflow">if</span> (destroy_) {</div> |
| <div class="line"><a id="l00519" name="l00519"></a><span class="lineno"> 519</span> <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < num_; ++i) {</div> |
| <div class="line"><a id="l00520" name="l00520"></a><span class="lineno"> 520</span> ptr[i].~T();</div> |
| <div class="line"><a id="l00521" name="l00521"></a><span class="lineno"> 521</span> }</div> |
| <div class="line"><a id="l00522" name="l00522"></a><span class="lineno"> 522</span> }</div> |
| <div class="line"><a id="l00523" name="l00523"></a><span class="lineno"> 523</span> allocator_.deallocate(ptr, num_);</div> |
| <div class="line"><a id="l00524" name="l00524"></a><span class="lineno"> 524</span> }</div> |
| <div class="line"><a id="l00525" name="l00525"></a><span class="lineno"> 525</span> }</div> |
| <div class="line"><a id="l00526" name="l00526"></a><span class="lineno"> 526</span> <span class="keywordtype">void</span> set_destroy(<span class="keywordtype">bool</span> destroy) { destroy_ = destroy; }</div> |
| <div class="line"><a id="l00527" name="l00527"></a><span class="lineno"> 527</span> <span class="keyword">private</span>:</div> |
| <div class="line"><a id="l00528" name="l00528"></a><span class="lineno"> 528</span> A allocator_;</div> |
| <div class="line"><a id="l00529" name="l00529"></a><span class="lineno"> 529</span> <span class="keywordtype">bool</span> destroy_;</div> |
| <div class="line"><a id="l00530" name="l00530"></a><span class="lineno"> 530</span> <span class="keywordtype">size_t</span> num_;</div> |
| <div class="line"><a id="l00531" name="l00531"></a><span class="lineno"> 531</span>};</div> |
| <div class="line"><a id="l00532" name="l00532"></a><span class="lineno"> 532</span> </div> |
| <div class="line"><a id="l00533" name="l00533"></a><span class="lineno"> 533</span> </div> |
| <div class="line"><a id="l00534" name="l00534"></a><span class="lineno"> 534</span>} <span class="comment">// namespace datasketches</span></div> |
| <div class="line"><a id="l00535" name="l00535"></a><span class="lineno"> 535</span> </div> |
| <div class="line"><a id="l00536" name="l00536"></a><span class="lineno"> 536</span><span class="preprocessor">#endif </span><span class="comment">// _EBPPS_SAMPLE_IMPL_HPP_</span></div> |
| <div class="ttc" id="anamespacedatasketches_html"><div class="ttname"><a href="namespacedatasketches.html">datasketches</a></div><div class="ttdoc">DataSketches namespace.</div><div class="ttdef"><b>Definition</b> binomial_bounds.hpp:38</div></div> |
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