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| <div class="title">input_split_shuffle.h</div> </div> |
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| <a href="input__split__shuffle_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>  </div> |
| <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#ifndef DMLC_INPUT_SPLIT_SHUFFLE_H_</span></div> |
| <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#define DMLC_INPUT_SPLIT_SHUFFLE_H_</span></div> |
| <div class="line"><a name="l00009"></a><span class="lineno"> 9</span>  </div> |
| <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <cstdio></span></div> |
| <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <cstring></span></div> |
| <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include <vector></span></div> |
| <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <string></span></div> |
| <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <algorithm></span></div> |
| <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include <memory></span></div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  </div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">namespace </span><a class="code" href="namespacedmlc.html">dmlc</a> {</div> |
| <div class="line"><a name="l00019"></a><span class="lineno"><a class="line" href="classdmlc_1_1InputSplitShuffle.html"> 19</a></span> <span class="keyword">class </span><a class="code" href="classdmlc_1_1InputSplitShuffle.html">InputSplitShuffle</a> : <span class="keyword">public</span> <a class="code" href="classdmlc_1_1InputSplit.html">InputSplit</a> {</div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  <span class="keyword">public</span>:</div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  <span class="comment">// destructor</span></div> |
| <div class="line"><a name="l00022"></a><span class="lineno"><a class="line" href="classdmlc_1_1InputSplitShuffle.html#afbce8f23fe731fb5ae087020f6274ab4"> 22</a></span>  <span class="keyword">virtual</span> <a class="code" href="classdmlc_1_1InputSplitShuffle.html#afbce8f23fe731fb5ae087020f6274ab4">~InputSplitShuffle</a>(<span class="keywordtype">void</span>) { source_.reset(); }</div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  <span class="comment">// implement BeforeFirst</span></div> |
| <div class="line"><a name="l00024"></a><span class="lineno"><a class="line" href="classdmlc_1_1InputSplitShuffle.html#af3f6ae9b61f4d18494d4bfbda0fab9c8"> 24</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classdmlc_1_1InputSplitShuffle.html#af3f6ae9b61f4d18494d4bfbda0fab9c8">BeforeFirst</a>(<span class="keywordtype">void</span>) {</div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="keywordflow">if</span> (num_shuffle_parts_ > 1) {</div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  std::shuffle(shuffle_indexes_.begin(), shuffle_indexes_.end(), trnd_);</div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keywordtype">int</span> idx = shuffle_indexes_[0] + part_index_ * num_shuffle_parts_;</div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  source_->ResetPartition(idx, num_parts_ * num_shuffle_parts_);</div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  cur_shuffle_idx_ = 0;</div> |
| <div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  source_->BeforeFirst();</div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  }</div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  }</div> |
| <div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="classdmlc_1_1InputSplitShuffle.html#a491c4e5c44919e24d32403caeecdf468"> 34</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classdmlc_1_1InputSplitShuffle.html#a491c4e5c44919e24d32403caeecdf468">HintChunkSize</a>(<span class="keywordtype">size_t</span> chunk_size) {</div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  source_->HintChunkSize(chunk_size);</div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  }</div> |
| <div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="classdmlc_1_1InputSplitShuffle.html#a768b224c5dad3d7cef5af3c5cbd08263"> 37</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">size_t</span> <a class="code" href="classdmlc_1_1InputSplitShuffle.html#a768b224c5dad3d7cef5af3c5cbd08263">GetTotalSize</a>(<span class="keywordtype">void</span>) {</div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordflow">return</span> source_->GetTotalSize();</div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  }</div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="comment">// implement next record</span></div> |
| <div class="line"><a name="l00041"></a><span class="lineno"><a class="line" href="classdmlc_1_1InputSplitShuffle.html#ab8812c94aa95744a475a1549b2b6f6a6"> 41</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="code" href="classdmlc_1_1InputSplitShuffle.html#ab8812c94aa95744a475a1549b2b6f6a6">NextRecord</a>(<a class="code" href="structdmlc_1_1InputSplit_1_1Blob.html">Blob</a> *out_rec) {</div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">if</span> (num_shuffle_parts_ > 1) {</div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordflow">if</span> (!source_->NextRecord(out_rec)) {</div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">if</span> (cur_shuffle_idx_ == num_shuffle_parts_ - 1) {</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  }</div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  ++cur_shuffle_idx_;</div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordtype">int</span> idx =</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  shuffle_indexes_[cur_shuffle_idx_] + part_index_ * num_shuffle_parts_;</div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  source_->ResetPartition(idx, num_parts_ * num_shuffle_parts_);</div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">return</span> <a class="code" href="classdmlc_1_1InputSplitShuffle.html#ab8812c94aa95744a475a1549b2b6f6a6">NextRecord</a>(out_rec);</div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  }</div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">return</span> source_->NextRecord(out_rec);</div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  }</div> |
| <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  }</div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="comment">// implement next chunk</span></div> |
| <div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="classdmlc_1_1InputSplitShuffle.html#a88433138b96bc4c00d3e3bc8f2856025"> 60</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="code" href="classdmlc_1_1InputSplitShuffle.html#a88433138b96bc4c00d3e3bc8f2856025">NextChunk</a>(<a class="code" href="structdmlc_1_1InputSplit_1_1Blob.html">Blob</a>* out_chunk) {</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">if</span> (num_shuffle_parts_ > 1) {</div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordflow">if</span> (!source_->NextChunk(out_chunk)) {</div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">if</span> (cur_shuffle_idx_ == num_shuffle_parts_ - 1) {</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</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>  ++cur_shuffle_idx_;</div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordtype">int</span> idx =</div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  shuffle_indexes_[cur_shuffle_idx_] + part_index_ * num_shuffle_parts_;</div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  source_->ResetPartition(idx, num_parts_ * num_shuffle_parts_);</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">return</span> <a class="code" href="classdmlc_1_1InputSplitShuffle.html#a88433138b96bc4c00d3e3bc8f2856025">NextChunk</a>(out_chunk);</div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">return</span> source_->NextChunk(out_chunk);</div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  }</div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  }</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="comment">// implement ResetPartition.</span></div> |
| <div class="line"><a name="l00079"></a><span class="lineno"><a class="line" href="classdmlc_1_1InputSplitShuffle.html#a2e3056434b2605d42f935b242d0e4a3d"> 79</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classdmlc_1_1InputSplitShuffle.html#a2e3056434b2605d42f935b242d0e4a3d">ResetPartition</a>(<span class="keywordtype">unsigned</span> rank, <span class="keywordtype">unsigned</span> nsplit) {</div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  CHECK(nsplit == num_parts_) << <span class="stringliteral">"num_parts is not consistent!"</span>;</div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordtype">int</span> idx = shuffle_indexes_[0] + rank * num_shuffle_parts_;</div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  source_->ResetPartition(idx, nsplit * num_shuffle_parts_);</div> |
| <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  cur_shuffle_idx_ = 0;</div> |
| <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  }</div> |
| <div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="classdmlc_1_1InputSplitShuffle.html#a036d26e7c95b13e65ff8accbf6fdb80e"> 100</a></span>  <a class="code" href="classdmlc_1_1InputSplitShuffle.html#a036d26e7c95b13e65ff8accbf6fdb80e">InputSplitShuffle</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* uri,</div> |
| <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordtype">unsigned</span> part_index,</div> |
| <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordtype">unsigned</span> num_parts,</div> |
| <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keyword">const</span> <span class="keywordtype">char</span>* type,</div> |
| <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordtype">unsigned</span> num_shuffle_parts,</div> |
| <div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordtype">int</span> shuffle_seed)</div> |
| <div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  : part_index_(part_index),</div> |
| <div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  num_parts_(num_parts),</div> |
| <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  num_shuffle_parts_(num_shuffle_parts),</div> |
| <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  cur_shuffle_idx_(0) {</div> |
| <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < num_shuffle_parts_; i++) {</div> |
| <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  shuffle_indexes_.push_back(i);</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>  trnd_.seed(kRandMagic_ + part_index_ + num_parts_ + num_shuffle_parts_ +</div> |
| <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  shuffle_seed);</div> |
| <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  std::shuffle(shuffle_indexes_.begin(), shuffle_indexes_.end(), trnd_);</div> |
| <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordtype">int</span> idx = shuffle_indexes_[cur_shuffle_idx_] + part_index_ * num_shuffle_parts_;</div> |
| <div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  source_.reset(</div> |
| <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <a class="code" href="classdmlc_1_1InputSplit.html#a118dc34dbd121d5ff80cd904adee4c24">InputSplit::Create</a>(uri, idx , num_parts_ * num_shuffle_parts_, type));</div> |
| <div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  }</div> |
| <div class="line"><a name="l00138"></a><span class="lineno"><a class="line" href="classdmlc_1_1InputSplitShuffle.html#aa0277fb979b7466ba9afa7da86c0bfb6"> 138</a></span>  <span class="keyword">static</span> <a class="code" href="classdmlc_1_1InputSplit.html">InputSplit</a>* <a class="code" href="classdmlc_1_1InputSplitShuffle.html#aa0277fb979b7466ba9afa7da86c0bfb6">Create</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* uri,</div> |
| <div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordtype">unsigned</span> part_index,</div> |
| <div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordtype">unsigned</span> num_parts,</div> |
| <div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keyword">const</span> <span class="keywordtype">char</span>* type,</div> |
| <div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordtype">unsigned</span> num_shuffle_parts,</div> |
| <div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordtype">int</span> shuffle_seed) {</div> |
| <div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  CHECK(num_shuffle_parts > 0) << <span class="stringliteral">"number of shuffle parts should be greater than zero!"</span>;</div> |
| <div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="classdmlc_1_1InputSplitShuffle.html#a036d26e7c95b13e65ff8accbf6fdb80e">InputSplitShuffle</a>(</div> |
| <div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  uri, part_index, num_parts, type, num_shuffle_parts, shuffle_seed);</div> |
| <div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  }</div> |
| <div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  </div> |
| <div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keyword">private</span>:</div> |
| <div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="comment">// magic nyumber for seed</span></div> |
| <div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kRandMagic_ = 666;</div> |
| <div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  std::mt19937 trnd_;</div> |
| <div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  std::unique_ptr<InputSplit> source_;</div> |
| <div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordtype">unsigned</span> part_index_;</div> |
| <div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordtype">unsigned</span> num_parts_;</div> |
| <div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordtype">unsigned</span> num_shuffle_parts_;</div> |
| <div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordtype">unsigned</span> cur_shuffle_idx_;</div> |
| <div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  std::vector<int> shuffle_indexes_;</div> |
| <div class="line"><a name="l00166"></a><span class="lineno"> 166</span> };</div> |
| <div class="line"><a name="l00167"></a><span class="lineno"> 167</span> } <span class="comment">// namespace dmlc</span></div> |
| <div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="preprocessor">#endif // DMLC_INPUT_SPLIT_SHUFFLE_H_</span></div> |
| </div><!-- fragment --></div><!-- contents --> |
| <div class="ttc" id="aclassdmlc_1_1InputSplitShuffle_html_a2e3056434b2605d42f935b242d0e4a3d"><div class="ttname"><a href="classdmlc_1_1InputSplitShuffle.html#a2e3056434b2605d42f935b242d0e4a3d">dmlc::InputSplitShuffle::ResetPartition</a></div><div class="ttdeci">virtual void ResetPartition(unsigned rank, unsigned nsplit)</div><div class="ttdoc">reset the Input split to a certain part id, The InputSplit will be pointed to the head of the new spe...</div><div class="ttdef"><b>Definition:</b> input_split_shuffle.h:79</div></div> |
| <div class="ttc" id="aclassdmlc_1_1InputSplitShuffle_html_a491c4e5c44919e24d32403caeecdf468"><div class="ttname"><a href="classdmlc_1_1InputSplitShuffle.html#a491c4e5c44919e24d32403caeecdf468">dmlc::InputSplitShuffle::HintChunkSize</a></div><div class="ttdeci">virtual void HintChunkSize(size_t chunk_size)</div><div class="ttdoc">hint the inputsplit how large the chunk size it should return when implementing NextChunk this is a h...</div><div class="ttdef"><b>Definition:</b> input_split_shuffle.h:34</div></div> |
| <div class="ttc" id="anamespacedmlc_html"><div class="ttname"><a href="namespacedmlc.html">dmlc</a></div><div class="ttdoc">namespace for dmlc</div><div class="ttdef"><b>Definition:</b> array_view.h:12</div></div> |
| <div class="ttc" id="aclassdmlc_1_1InputSplit_html_a118dc34dbd121d5ff80cd904adee4c24"><div class="ttname"><a href="classdmlc_1_1InputSplit.html#a118dc34dbd121d5ff80cd904adee4c24">dmlc::InputSplit::Create</a></div><div class="ttdeci">static InputSplit * Create(const char *uri, unsigned part_index, unsigned num_parts, const char *type)</div><div class="ttdoc">factory function: create input split given a uri</div></div> |
| <div class="ttc" id="aclassdmlc_1_1InputSplitShuffle_html_a036d26e7c95b13e65ff8accbf6fdb80e"><div class="ttname"><a href="classdmlc_1_1InputSplitShuffle.html#a036d26e7c95b13e65ff8accbf6fdb80e">dmlc::InputSplitShuffle::InputSplitShuffle</a></div><div class="ttdeci">InputSplitShuffle(const char *uri, unsigned part_index, unsigned num_parts, const char *type, unsigned num_shuffle_parts, int shuffle_seed)</div><div class="ttdoc">constructor</div><div class="ttdef"><b>Definition:</b> input_split_shuffle.h:100</div></div> |
| <div class="ttc" id="astructdmlc_1_1InputSplit_1_1Blob_html"><div class="ttname"><a href="structdmlc_1_1InputSplit_1_1Blob.html">dmlc::InputSplit::Blob</a></div><div class="ttdoc">a blob of memory region</div><div class="ttdef"><b>Definition:</b> io.h:158</div></div> |
| <div class="ttc" id="aclassdmlc_1_1InputSplitShuffle_html_afbce8f23fe731fb5ae087020f6274ab4"><div class="ttname"><a href="classdmlc_1_1InputSplitShuffle.html#afbce8f23fe731fb5ae087020f6274ab4">dmlc::InputSplitShuffle::~InputSplitShuffle</a></div><div class="ttdeci">virtual ~InputSplitShuffle(void)</div><div class="ttdef"><b>Definition:</b> input_split_shuffle.h:22</div></div> |
| <div class="ttc" id="aclassdmlc_1_1InputSplitShuffle_html_ab8812c94aa95744a475a1549b2b6f6a6"><div class="ttname"><a href="classdmlc_1_1InputSplitShuffle.html#ab8812c94aa95744a475a1549b2b6f6a6">dmlc::InputSplitShuffle::NextRecord</a></div><div class="ttdeci">virtual bool NextRecord(Blob *out_rec)</div><div class="ttdoc">get the next record, the returning value is valid until next call to NextRecord, NextChunk or NextBat...</div><div class="ttdef"><b>Definition:</b> input_split_shuffle.h:41</div></div> |
| <div class="ttc" id="aclassdmlc_1_1InputSplitShuffle_html_af3f6ae9b61f4d18494d4bfbda0fab9c8"><div class="ttname"><a href="classdmlc_1_1InputSplitShuffle.html#af3f6ae9b61f4d18494d4bfbda0fab9c8">dmlc::InputSplitShuffle::BeforeFirst</a></div><div class="ttdeci">virtual void BeforeFirst(void)</div><div class="ttdoc">reset the position of InputSplit to beginning</div><div class="ttdef"><b>Definition:</b> input_split_shuffle.h:24</div></div> |
| <div class="ttc" id="aclassdmlc_1_1InputSplitShuffle_html"><div class="ttname"><a href="classdmlc_1_1InputSplitShuffle.html">dmlc::InputSplitShuffle</a></div><div class="ttdoc">class to construct input split with global shuffling</div><div class="ttdef"><b>Definition:</b> input_split_shuffle.h:19</div></div> |
| <div class="ttc" id="aclassdmlc_1_1InputSplitShuffle_html_aa0277fb979b7466ba9afa7da86c0bfb6"><div class="ttname"><a href="classdmlc_1_1InputSplitShuffle.html#aa0277fb979b7466ba9afa7da86c0bfb6">dmlc::InputSplitShuffle::Create</a></div><div class="ttdeci">static InputSplit * Create(const char *uri, unsigned part_index, unsigned num_parts, const char *type, unsigned num_shuffle_parts, int shuffle_seed)</div><div class="ttdoc">factory function: create input split with chunk shuffling given a uri</div><div class="ttdef"><b>Definition:</b> input_split_shuffle.h:138</div></div> |
| <div class="ttc" id="aclassdmlc_1_1InputSplit_html"><div class="ttname"><a href="classdmlc_1_1InputSplit.html">dmlc::InputSplit</a></div><div class="ttdoc">input split creates that allows reading of records from split of data, independent part that covers a...</div><div class="ttdef"><b>Definition:</b> io.h:155</div></div> |
| <div class="ttc" id="aclassdmlc_1_1InputSplitShuffle_html_a88433138b96bc4c00d3e3bc8f2856025"><div class="ttname"><a href="classdmlc_1_1InputSplitShuffle.html#a88433138b96bc4c00d3e3bc8f2856025">dmlc::InputSplitShuffle::NextChunk</a></div><div class="ttdeci">virtual bool NextChunk(Blob *out_chunk)</div><div class="ttdoc">get a chunk of memory that can contain multiple records, the caller needs to parse the content of the...</div><div class="ttdef"><b>Definition:</b> input_split_shuffle.h:60</div></div> |
| <div class="ttc" id="aclassdmlc_1_1InputSplitShuffle_html_a768b224c5dad3d7cef5af3c5cbd08263"><div class="ttname"><a href="classdmlc_1_1InputSplitShuffle.html#a768b224c5dad3d7cef5af3c5cbd08263">dmlc::InputSplitShuffle::GetTotalSize</a></div><div class="ttdeci">virtual size_t GetTotalSize(void)</div><div class="ttdoc">get the total size of the InputSplit</div><div class="ttdef"><b>Definition:</b> input_split_shuffle.h:37</div></div> |
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