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Posted to commits@singa.apache.org by mo...@apache.org on 2019/04/22 10:37:24 UTC

svn commit: r1857944 [35/35] - in /incubator/singa/site/trunk/doxygen: ./ html/ html/search/

Added: incubator/singa/site/trunk/doxygen/html/transformer_8h_source.html
URL: http://svn.apache.org/viewvc/incubator/singa/site/trunk/doxygen/html/transformer_8h_source.html?rev=1857944&view=auto
==============================================================================
--- incubator/singa/site/trunk/doxygen/html/transformer_8h_source.html (added)
+++ incubator/singa/site/trunk/doxygen/html/transformer_8h_source.html Mon Apr 22 10:37:18 2019
@@ -0,0 +1,83 @@
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+<title>Apache Singa: /home/moaz/incubator-singa/include/singa/io/transformer.h Source File</title>
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+  <td id="projectalign" style="padding-left: 0.5em;">
+   <div id="projectname">Apache Singa
+   </div>
+   <div id="projectbrief">A General Distributed Deep Learning Library</div>
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+<!-- end header part -->
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+  <div class="headertitle">
+<div class="title">transformer.h</div>  </div>
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+<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;</div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#ifndef SINGA_IO_TRANSFORMER_H_</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#define SINGA_IO_TRANSFORMER_H_</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;</div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#include &lt;string&gt;</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#include &quot;singa/core/tensor.h&quot;</span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</sp
 an>&#160;<span class="preprocessor">#include &quot;singa/proto/io.pb.h&quot;</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#include &quot;singa/proto/model.pb.h&quot;</span></div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;</div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacesinga.html">singa</a> {</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div><div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="classsinga_1_1Transformer.html">   31</a></span>&#160;<span class="keyword">class </span><a class="code" href="classsinga_1_1Transformer.html">Transformer</a> {</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160; <span class="keyword">public</span>:</div><div class="line"><a name="l00033
 "></a><span class="lineno">   33</span>&#160;  <a class="code" href="classsinga_1_1Transformer.html">Transformer</a>() {}</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;  <span class="keyword">virtual</span> ~<a class="code" href="classsinga_1_1Transformer.html">Transformer</a>() {}</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;  <span class="keyword">virtual</span> <span class="keywordtype">void</span> Setup(<span class="keyword">const</span> TransformerConf&amp; conf) {}</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;  <span class="keyword">virtual</span> <a class="code" href="classsinga_1_1Tensor.html">Tensor</a> Apply(<span class="keywordtype">int</span> flag, <a class="code" href="classsinga_1_1Tensor.html
 ">Tensor</a>&amp; input) = 0;</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;};</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;</div><div class="line"><a name="l00041"></a><span class="lineno"><a class="line" href="classsinga_1_1ImageTransformer.html">   41</a></span>&#160;<span class="keyword">class </span><a class="code" href="classsinga_1_1ImageTransformer.html">ImageTransformer</a>: <span class="keyword">public</span> <a class="code" href="classsinga_1_1Transformer.html">Transformer</a> {</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160; <span class="keyword">public</span>:</div><div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="classsinga_1_1ImageTransformer.html#a96dbd65ebac2c4df2d5e07b1e7a0ae9a">   43</a></span>&#160;  <span class="keywordtype">void</span> <a class="code" href="classsinga_1_1ImageTransformer.html#a96dbd65ebac2c4df2d5e07b1e7a
 0ae9a">Setup</a>(<span class="keyword">const</span> TransformerConf&amp; conf)<span class="keyword"> override </span>{</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    featurewise_center_ = conf.featurewise_center();</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    featurewise_std_norm_ = conf.featurewise_std_norm();</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    resize_height_ = conf.resize_height();</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;    resize_width_ = conf.resize_width();</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;    rescale_ = conf.rescale();</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    horizontal_mirror_ = conf.horizontal_mirror();</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    image_dim_order_ 
 = conf.image_dim_order();</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    </div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    <span class="keywordflow">if</span> (conf.crop_shape_size() == 2)</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;      crop_shape_ = {conf.crop_shape(0), conf.crop_shape(1)};      </div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;  }</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;  <a class="code" href="classsinga_1_1Tensor.html">Tensor</a> Apply(<span class="keywordtype">int</span> flag, <a class="code" href="classsinga_1_1Tensor.html">Tensor</a>&amp; input) <span class="keyword">override</span>;</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;</div><div class="li
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          <span class="keyword">const</span> <span class="keywordtype">size_t</span> crop_width, <span class="keyword">const</span> <span class="keywordtype">size_t</span> crop_h_offset, </div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;             <span class="keyword">const</span> <span class="keywordtype">size_t</span> crop_w_offset, <span class="keyword">const</span> <span class="keywordtype">string</span>&amp; image_dim_order);</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<a class="code" href="classsinga_1_1Tensor.html">Tensor</a> mirror(<a class="code" href="classsinga_1_1Tensor.html">Tensor</a>&amp; input, <span class="keyword">const</span> <span class="keywordtype">bool</span> horizontal_mirror, </div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;             <span class="keyword">const</span> <span class="keywordtype">bool</span> vertical_mirror, <span class="keyword">con
 st</span> <span class="keywordtype">string</span>&amp; image_dim_order);</div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;} <span class="comment">// namespace singa</span></div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="preprocessor">#endif  // SINGA_IO_TRANSFORMER_H_</span></div><div class="ttc" id="classsinga_1_1ImageTransformer_html"><div class="ttname"><a href="classsinga_1_1ImageTransformer.html">singa::ImageTransformer</a></div><div class="ttdef"><b>Definition:</b> transformer.h:41</div></div>
+<div class="ttc" id="classsinga_1_1ImageTransformer_html_a96dbd65ebac2c4df2d5e07b1e7a0ae9a"><div class="ttname"><a href="classsinga_1_1ImageTransformer.html#a96dbd65ebac2c4df2d5e07b1e7a0ae9a">singa::ImageTransformer::Setup</a></div><div class="ttdeci">void Setup(const TransformerConf &amp;conf) override</div><div class="ttdef"><b>Definition:</b> transformer.h:43</div></div>
+<div class="ttc" id="classsinga_1_1Tensor_html"><div class="ttname"><a href="classsinga_1_1Tensor.html">singa::Tensor</a></div><div class="ttdoc">A Tensor instance is a multi-dimensional array resident on a Device (default device is the host CPU)...</div><div class="ttdef"><b>Definition:</b> tensor.h:56</div></div>
+<div class="ttc" id="classsinga_1_1Transformer_html"><div class="ttname"><a href="classsinga_1_1Transformer.html">singa::Transformer</a></div><div class="ttdoc">Base apply class that does data transformations in pre-processing stage. </div><div class="ttdef"><b>Definition:</b> transformer.h:31</div></div>
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+</div><!-- fragment --></div><!-- contents -->
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Added: incubator/singa/site/trunk/doxygen/html/updater_8h_source.html
URL: http://svn.apache.org/viewvc/incubator/singa/site/trunk/doxygen/html/updater_8h_source.html?rev=1857944&view=auto
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--- incubator/singa/site/trunk/doxygen/html/updater_8h_source.html (added)
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+ <tbody>
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+  <td id="projectalign" style="padding-left: 0.5em;">
+   <div id="projectname">Apache Singa
+   </div>
+   <div id="projectbrief">A General Distributed Deep Learning Library</div>
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+<div class="header">
+  <div class="headertitle">
+<div class="title">updater.h</div>  </div>
+</div><!--header-->
+<div class="contents">
+<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;</div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#ifndef SINGA_MODEL_UPDATER_H_</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#define SINGA_MODEL_UPDATER_H_</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;</div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#include &quot;singa/model/optimizer.h&quot;</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#include &quot;singa/core/device.h&quot;</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#include &quot;singa/core/tensor.h&quot;</span></div><div class="line"><a name="l00025
 "></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &quot;singa/utils/logging.h&quot;</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#include &lt;memory&gt;</span></div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor">#include &lt;mutex&gt;</span></div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#include &lt;condition_variable&gt;</span></div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">#include &lt;string&gt;</span></div><div class="line"><a name="l00032"></a><span class="lineno">   32</spa
 n>&#160;<span class="preprocessor">#include &lt;utility&gt;</span></div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="preprocessor">#include &lt;unordered_map&gt;</span></div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="preprocessor">#include &lt;atomic&gt;</span></div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacesinga.html">singa</a> {</div><div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="classsinga_1_1Updater.html">   39</a></span>&#160;<span class="keyword">class </span><a class="code" href="classsinga_1_1Updater.html">Updater</a> {</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160; <span class="keyword">public</span>:</div><div class="line">
 <a name="l00041"></a><span class="lineno">   41</span>&#160;  <span class="keyword">explicit</span> <a class="code" href="classsinga_1_1Updater.html">Updater</a>(<a class="code" href="classsinga_1_1Optimizer.html">Optimizer</a>* opt) : opt_{opt} {}</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;  <span class="keyword">virtual</span> ~<a class="code" href="classsinga_1_1Updater.html">Updater</a>() {}</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classsinga_1_1Updater.html#a6cc4fdac0b011f0500c0d7bf9ad78e1a">Setup</a>(<span class="keyword">const</span> OptimizerConf&amp; conf);</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classsinga_1_1Updater.html#a279ada6bda1f42a420245f5258bba221"
 >Register</a>(<span class="keyword">const</span> <span class="keywordtype">string</span>&amp; name, <span class="keyword">const</span> ParamSpec&amp; specs);</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classsinga_1_1Updater.html#ac07c0e7cd69b631244b7c2c4bb90c0ec">Apply</a>(<span class="keywordtype">int</span> step, <span class="keyword">const</span> <span class="keywordtype">string</span>&amp; name, <a class="code" href="classsinga_1_1Tensor.html">Tensor</a>&amp; grad, <a class="code" href="classsinga_1_1Tensor.html">Tensor</a>&amp; value);</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;  <a class="code" href="classsinga_1_1Optimizer.html">Optimizer</a>* GetOptimizer() { <span class="keywordflow">return</span> opt_; }</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;</div><div c
 lass="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;  <span class="comment">// No copy allowed.</span></div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;  <a class="code" href="classsinga_1_1Updater.html">Updater</a>(<span class="keyword">const</span> <a class="code" href="classsinga_1_1Updater.html">Updater</a>&amp;) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;  <span class="keywordtype">void</span> operator=(<span class="keyword">const</span> <a class="code" href="classsinga_1_1Updater.html">Updater</a>&amp;) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160; <span class="keyword">protected</span>:</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;  <a class="code" h
 ref="classsinga_1_1Optimizer.html">Optimizer</a>* opt_;</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;};</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;</div><div class="line"><a name="l00061"></a><span class="lineno"><a class="line" href="classsinga_1_1LocalUpdater.html">   61</a></span>&#160;<span class="keyword">class </span><a class="code" href="classsinga_1_1LocalUpdater.html">LocalUpdater</a> : <span class="keyword">public</span> <a class="code" href="classsinga_1_1Updater.html">Updater</a> {</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160; <span class="keyword">public</span>:</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;  <a class="code" href="classsinga_1_1LocalUpdater.html">LocalUpdater</a>(<span class="keywordtype">int</span> total_num, <a class="code" href="classsinga_1_1Optimizer.html">Optimizer</a>* opt,</div><div class="line"
 ><a name="l00064"></a><span class="lineno">   64</span>&#160;               std::shared_ptr&lt;Device&gt; dev = <a class="code" href="namespacesinga.html#af5fd1cb4e1a4b5ae9bba1377b034eb8d">defaultDevice</a>)</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;      : <a class="code" href="classsinga_1_1Updater.html">Updater</a>(opt), total_num_{total_num}, dev_(dev) {}</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;  <span class="keyword">virtual</span> ~<a class="code" href="classsinga_1_1LocalUpdater.html">LocalUpdater</a>()<span class="keyword"> override </span>{}</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classsinga_1_1Updater.html#a279ada6bda1f42a420245f5258bba221">Register</a>(<span class="keyword">const</span> <span class="keywordtype">string</span>&amp; name, <span class="
 keyword">const</span> ParamSpec&amp; specs) <span class="keyword">override</span>;</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classsinga_1_1Updater.html#ac07c0e7cd69b631244b7c2c4bb90c0ec">Apply</a>(<span class="keywordtype">int</span> step, <span class="keyword">const</span> <span class="keywordtype">string</span>&amp; name, <a class="code" href="classsinga_1_1Tensor.html">Tensor</a>&amp; grad,</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;                     <a class="code" href="classsinga_1_1Tensor.html">Tensor</a>&amp; value) <span class="keyword">override</span>;</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160; <span class="keyword">private</span>:</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;  <span class="keyword">template</span> 
 &lt;<span class="keyword">typename</span> T1, <span class="keyword">typename</span> T2&gt;</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;  <span class="keyword">struct </span>key_hasher {</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;    <span class="keywordtype">size_t</span> operator() (<span class="keyword">const</span> std::pair&lt;T1, T2&gt;&amp; p)<span class="keyword"> const </span>{</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;      <span class="keyword">auto</span> h1 = std::hash&lt;T1&gt;{}(p.first);</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;      <span class="keyword">auto</span> h2 = std::hash&lt;T2&gt;{}(p.second);</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;      <span class="keywordflow">return</span> h1 ^ h2;</div><div class="line"><a name="l00081"></a><span class="lineno">   81
 </span>&#160;    }</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;  };</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;  <span class="keywordtype">int</span> total_num_;</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;  std::shared_ptr&lt;Device&gt; dev_;</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;  std::unordered_map&lt;std::string, std::atomic&lt;int&gt;&gt; dev_index_;</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;  std::unordered_map&lt;std::string, int&gt; to_updater_finished_;</div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;  std::unordered_map&lt;std::pair&lt;int, std::string&gt;, <a class="code" href="classsinga_1_1Tensor.html">Tensor</a>,</div><div class="line"><a name="l00089"
 ></a><span class="lineno">   89</span>&#160;    key_hasher&lt;int, std::string&gt;&gt; grad_buffer_;</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;  std::unordered_map&lt;std::string, Tensor&gt; sum_, param_buffer_;</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;  std::unordered_map&lt;std::string, std::mutex&gt; mtx_;</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;  std::unordered_map&lt;std::string, std::condition_variable&gt;</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;    to_updater_all_finished_;</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;};</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;}  <span class="comment">//  namespace singa</span></div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;</div><div class="line"><a name="l0009
 7"></a><span class="lineno">   97</span>&#160;<span class="preprocessor">#endif  //  SINGA_MODEL_UPDATER_H_</span></div><div class="ttc" id="classsinga_1_1Updater_html_ac07c0e7cd69b631244b7c2c4bb90c0ec"><div class="ttname"><a href="classsinga_1_1Updater.html#ac07c0e7cd69b631244b7c2c4bb90c0ec">singa::Updater::Apply</a></div><div class="ttdeci">virtual void Apply(int step, const string &amp;name, Tensor &amp;grad, Tensor &amp;value)</div><div class="ttdoc">Forward Apply() to Optimizer. </div></div>
+<div class="ttc" id="classsinga_1_1Tensor_html"><div class="ttname"><a href="classsinga_1_1Tensor.html">singa::Tensor</a></div><div class="ttdoc">A Tensor instance is a multi-dimensional array resident on a Device (default device is the host CPU)...</div><div class="ttdef"><b>Definition:</b> tensor.h:56</div></div>
+<div class="ttc" id="classsinga_1_1Updater_html"><div class="ttname"><a href="classsinga_1_1Updater.html">singa::Updater</a></div><div class="ttdoc">Basic Updater class just forward all the method function call to the wrapped Optimizer. </div><div class="ttdef"><b>Definition:</b> updater.h:39</div></div>
+<div class="ttc" id="namespacesinga_html_af5fd1cb4e1a4b5ae9bba1377b034eb8d"><div class="ttname"><a href="namespacesinga.html#af5fd1cb4e1a4b5ae9bba1377b034eb8d">singa::defaultDevice</a></div><div class="ttdeci">std::shared_ptr&lt; Device &gt; defaultDevice</div><div class="ttdoc">a singleton CppDevice as the host for all devices. </div></div>
+<div class="ttc" id="classsinga_1_1Updater_html_a6cc4fdac0b011f0500c0d7bf9ad78e1a"><div class="ttname"><a href="classsinga_1_1Updater.html#a6cc4fdac0b011f0500c0d7bf9ad78e1a">singa::Updater::Setup</a></div><div class="ttdeci">virtual void Setup(const OptimizerConf &amp;conf)</div><div class="ttdoc">Forward Setup() to Optimizer. </div></div>
+<div class="ttc" id="classsinga_1_1Updater_html_a279ada6bda1f42a420245f5258bba221"><div class="ttname"><a href="classsinga_1_1Updater.html#a279ada6bda1f42a420245f5258bba221">singa::Updater::Register</a></div><div class="ttdeci">virtual void Register(const string &amp;name, const ParamSpec &amp;specs)</div><div class="ttdoc">Forward Register() to Optimizer. </div></div>
+<div class="ttc" id="namespacesinga_html"><div class="ttname"><a href="namespacesinga.html">singa</a></div><div class="ttdoc">Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements...</div><div class="ttdef"><b>Definition:</b> common.h:48</div></div>
+<div class="ttc" id="classsinga_1_1Optimizer_html"><div class="ttname"><a href="classsinga_1_1Optimizer.html">singa::Optimizer</a></div><div class="ttdoc">The base class for gradient descent algorithms used to update the model parameters in order to optimi...</div><div class="ttdef"><b>Definition:</b> optimizer.h:41</div></div>
+<div class="ttc" id="classsinga_1_1LocalUpdater_html"><div class="ttname"><a href="classsinga_1_1LocalUpdater.html">singa::LocalUpdater</a></div><div class="ttdoc">LocalUpdater do gradient aggregation and update gradient calling the wrapped Optimizer on a specific ...</div><div class="ttdef"><b>Definition:</b> updater.h:61</div></div>
+</div><!-- fragment --></div><!-- contents -->
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+Generated on Mon Apr 22 2019 12:27:05 for Apache Singa by &#160;<a href="http://www.doxygen.org/index.html">
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+<li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_14a988756d30161f7e1f48b05d03905d.html">singa</a></li><li class="navelem"><a class="el" href="dir_54125cd652f9635a64a4101de1b8704d.html">utils</a></li>  </ul>
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+<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/************************************************************</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * or more contributor license agreements.  See the NOTICE file</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> * distributed with this work for additional information</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * regarding copyright ownership.  The ASF licenses this file</span
 ></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * to you under the Apache License, Version 2.0 (the</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> * &quot;License&quot;); you may not use this file except in compliance</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> * with the License.  You may obtain a copy of the License at</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"> *   http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160
 ;<span class="comment"> * Unless required by applicable law or agreed to in writing,</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment"> * software distributed under the License is distributed on an</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment"> * &quot;AS IS&quot; BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment"> * KIND, either express or implied.  See the License for the</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment"> * specific language governing permissions and limitations</span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment"> * under the License.</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</
 span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment"> *************************************************************/</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;</div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#ifndef INTEGER_H_</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#define INTEGER_H_</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;</div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &lt;cstdint&gt;</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="keyword">namespa
 ce </span><a class="code" href="namespacesinga.html">singa</a>{</div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="keyword">static</span> <span class="keywordtype">bool</span> isNetworkOrder() {</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;    <span class="keywordtype">int</span> test = 1;</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    <span class="keywordflow">return</span> (1 != *(uint8_t*)&amp;test);</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;}</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;</div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="keyword">static</span> <span clas
 s="keyword">inline</span> T byteSwap(<span class="keyword">const</span> T&amp; v) {</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    <span class="keywordtype">int</span> size = <span class="keyword">sizeof</span>(v);</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    T ret;</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    uint8_t *dest = <span class="keyword">reinterpret_cast&lt;</span>uint8_t *<span class="keyword">&gt;</span>(&amp;ret);</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    uint8_t *src = <span class="keyword">const_cast&lt;</span>uint8_t*<span class="keyword">&gt;</span>(<span class="keyword">reinterpret_cast&lt;</span><span class="keyword">const </span>uint8_t*<span class="keyword">&gt;</span>(&amp;v));</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    <span class="keywordflow">for</s
 pan> (<span class="keywordtype">int</span> i = 0; i &lt; size; ++i) {</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;        dest[i] = src[size - i - 1];</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    }</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    <span class="keywordflow">return</span> ret;</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;}</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> T hton(<span class="keyword">const</span> T&amp; v)</div><div class="line"><a name="l00047"><
 /a><span class="lineno">   47</span>&#160;{</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;    <span class="keywordflow">return</span> isNetworkOrder() ? v : byteSwap(v);</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;}</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> T ntoh(<span class="keyword">const</span> T&amp; v) </div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;{</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;    <span class="keywordflow">return</span> hton(v);</div><div class="line">
 <a name="l00055"></a><span class="lineno">   55</span>&#160;}</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span> appendInteger(<span class="keywordtype">char</span>* buf) {<span class="keywordflow">return</span> 0;}</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span> readInteger(<span class="keywordtype">char</span>* buf) {<span class="keywordflow">return</span> 0;}</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> Type, <span class
 ="keyword">typename</span>... Types&gt;</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> appendInteger(<span class="keywordtype">char</span>* buf, Type value, Types... values) {</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;    *(Type*)buf = hton(value);</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    <span class="keywordflow">return</span> <span class="keyword">sizeof</span>(Type) + appendInteger(buf + <span class="keyword">sizeof</span>(Type), values...);</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;}</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> Type, <span class="ke
 yword">typename</span>... Types&gt;</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> readInteger(<span class="keywordtype">char</span>* buf, Type&amp; value, Types&amp;... values) {</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    value = ntoh(*(Type*)buf);</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    <span class="keywordflow">return</span> <span class="keyword">sizeof</span>(Type) + readInteger(buf + <span class="keyword">sizeof</span>(Type), values...);</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;}</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;}</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;<span class="
 preprocessor">#endif</span></div><div class="ttc" id="namespacesinga_html"><div class="ttname"><a href="namespacesinga.html">singa</a></div><div class="ttdoc">Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements...</div><div class="ttdef"><b>Definition:</b> common.h:48</div></div>
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+  <td id="projectalign" style="padding-left: 0.5em;">
+   <div id="projectname">Apache Singa
+   </div>
+   <div id="projectbrief">A General Distributed Deep Learning Library</div>
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+<li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_14a988756d30161f7e1f48b05d03905d.html">singa</a></li><li class="navelem"><a class="el" href="dir_953eafc3caccd34fc2601f376f19d1ef.html">io</a></li>  </ul>
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+  <div class="headertitle">
+<div class="title">writer.h</div>  </div>
+</div><!--header-->
+<div class="contents">
+<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;</div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#ifndef SINGA_IO_WRITER_H_</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#define SINGA_IO_WRITER_H_</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;</div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#include &lt;cstring&gt;</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#include &lt;fstream&gt;</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#include &lt;string&gt;</span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="pre
 processor">#include &quot;singa/singa_config.h&quot;</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#ifdef USE_LMDB</span></div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#include &lt;lmdb.h&gt;</span></div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor">#include &lt;sys/stat.h&gt;</span></div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">#endif  // USE_LMDB</span></div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;</div><div class="line"><a name="l00033"></a><span class="lineno">   33</
 span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacesinga.html">singa</a> {</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="keyword">namespace </span>io {</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="keyword">using</span> std::string;</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="keyword">enum</span> Mode { kCreate, kAppend };</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;</div><div class="line"><a name="l00042"></a><span class="lineno"><a class="line" href="classsinga_1_1io_1_1Writer.html">   42</a></span>&#160;<span class="keyword">class </span><a class="code" href="classsinga_1_1io_1_1Writer.html">Writer</a> {</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>
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  class="lineno">   66</span>&#160;};</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;</div><div class="line"><a name="l00077"></a><span class="lineno"><a class="line" href="classsinga_1_1io_1_1BinFileWriter.html">   77</a></span>&#160;<span class="keyword">class </span><a class="code" href="classsinga_1_1io_1_1BinFileWriter.html">BinFileWriter</a> : <span class="keyword">public</span> <a class="code" href="classsinga_1_1io_1_1Writer.html">Writer</a> {</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160; <span class="keyword">public</span>:</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;  ~<a class="code" href="classsinga_1_1io_1_1BinFileWriter.html">BinFileWriter</a>() { <a class="code" href="classsinga_1_1io_1_1Writer.html#add7c77805b900595c2da748a4df8c448">Close</a>(); }</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;  <span class="keywordtype">
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 eno">   93</span>&#160; <span class="keyword">protected</span>:</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;  <span class="keywordtype">bool</span> OpenFile();</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160; <span class="keyword">private</span>:</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;  std::string path_ = <span class="stringliteral">&quot;&quot;</span>;</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;  Mode mode_;</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;  std::ofstream fdat_;</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;  <span class="keywordtype">char</span> *buf_ = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00106"></a><span class="lineno"> 
  106</span>&#160;  <span class="keywordtype">int</span> capacity_ = 10485760;</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;  <span class="keywordtype">int</span> bufsize_ = 0;</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;  <span class="keyword">const</span> <span class="keywordtype">char</span> kMagicWord[2] = {<span class="charliteral">&#39;s&#39;</span>, <span class="charliteral">&#39;g&#39;</span>};</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;};</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;</div><div class="line"><a name="l00114"></a><span class="lineno"><a class="line" href="classsinga_1_1io_1_1TextFileWriter.html">  114</a></span>&#160;<span class="keyword">class </span><a class="code" href="classsinga_1_1io_1_1TextFileWriter.html">TextFileWriter</a> : <span class="keyword">public</span> <a class="code" href="classsinga_1_1io_1
 _1Writer.html">Writer</a> {</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160; <span class="keyword">public</span>:</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;  ~<a class="code" href="classsinga_1_1io_1_1TextFileWriter.html">TextFileWriter</a>() { <a class="code" href="classsinga_1_1io_1_1Writer.html#add7c77805b900595c2da748a4df8c448">Close</a>(); }</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;  <span class="keywordtype">bool</span> <a class="code" href="classsinga_1_1io_1_1Writer.html#a2427e9a325544ca985b5b6729227f3ef">Open</a>(<span class="keyword">const</span> std::string &amp;path, Mode mode) <span class="keyword">override</span>;</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;  <span class="keywordtype">void</span> <a class="code" href="classsinga_1_1io_1_1Writer.html#add7c77805b900595c2da748a4df8c448">Close</a>() <span class="keywor
 d">override</span>;</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;  <span class="keywordtype">bool</span> <a class="code" href="classsinga_1_1io_1_1Writer.html#afa52a9053af2363cb4680217a10c038a">Write</a>(<span class="keyword">const</span> std::string &amp;key, <span class="keyword">const</span> std::string &amp;value) <span class="keyword">override</span>;</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;  <span class="keywordtype">void</span> <a class="code" href="classsinga_1_1io_1_1Writer.html#a6dd928130b77f215b90e87b42137da48">Flush</a>() <span class="keyword">override</span>;</div><div class="line"><a name="l00126"></a><span class="lineno"><a class="line" href="classsinga_1_1io_1_1TextFileWriter.html#aa68b02d34ab60ee7e8b350370a18c0a4">  126</a></span>&#160;  <span class="keyword">inline</span> std::string <a class="code" href="classsinga_1_1io_1_1TextFileWriter.html#aa68b02d34ab60ee7e8b350370a18c0a4">path</
 a>() { <span class="keywordflow">return</span> path_; }</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160; <span class="keyword">private</span>:</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;  std::string path_ = <span class="stringliteral">&quot;&quot;</span>;</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;  Mode mode_;</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;  std::ofstream fdat_;</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;};</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;<span class="preprocessor">#ifdef USE_LMDB</span></div><div class="line"><a name="l00137"></a><span class="lineno">  137</spa
 n>&#160;<span class="keyword">class </span>LMDBWriter : <span class="keyword">public</span> <a class="code" href="classsinga_1_1io_1_1Writer.html">Writer</a> {</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160; <span class="keyword">public</span>:</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;  ~LMDBWriter() { <a class="code" href="classsinga_1_1io_1_1Writer.html#add7c77805b900595c2da748a4df8c448">Close</a>(); }</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;  <span class="keywordtype">bool</span> <a class="code" href="classsinga_1_1io_1_1Writer.html#a2427e9a325544ca985b5b6729227f3ef">Open</a>(<span class="keyword">const</span> std::string &amp;path, Mode mode) <span class="keyword">override</span>;</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;  <span class="keywordtype">void</span> <a class="code" href="classsinga_1_1io_1_1Writer.html#add7c
 77805b900595c2da748a4df8c448">Close</a>() <span class="keyword">override</span>;</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;  <span class="keywordtype">bool</span> <a class="code" href="classsinga_1_1io_1_1Writer.html#afa52a9053af2363cb4680217a10c038a">Write</a>(<span class="keyword">const</span> std::string &amp;key, <span class="keyword">const</span> std::string &amp;value) <span class="keyword">override</span>;</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;  <span class="keywordtype">void</span> <a class="code" href="classsinga_1_1io_1_1Writer.html#a6dd928130b77f215b90e87b42137da48">Flush</a>() <span class="keyword">override</span>;</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;  <span class="keyword">inline</span> std::string path() { <span class="keywordflow">return</span> path_; }</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;</
 div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160; <span class="keyword">protected</span>:</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;  <span class="keywordtype">void</span> DoubleMapSize();</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;  <span class="keyword">inline</span> <span class="keywordtype">void</span> MDB_CHECK(<span class="keywordtype">int</span> mdb_status);</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160; <span class="keyword">private</span>:</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;  std::string path_ = <span class="stringliteral">&quot;&quot;</span>;</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;  Mode mode_;</div><div class="line"><a name="l00162"></a><span class="l
 ineno">  162</span>&#160;  MDB_env *mdb_env_ = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;  std::vector&lt;string&gt; keys, values;</div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;};</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;<span class="preprocessor">#endif  // USE_LMDB</span></div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;}  <span class="comment">// namespace io</span></div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;}  <span class="comment">// namespace singa</span></div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;<span class="preprocessor">#endif  // SINGA_IO_W
 RITER_H_</span></div><div class="ttc" id="classsinga_1_1io_1_1Writer_html"><div class="ttname"><a href="classsinga_1_1io_1_1Writer.html">singa::io::Writer</a></div><div class="ttdoc">General Writer that provides functions for writing tuples. </div><div class="ttdef"><b>Definition:</b> writer.h:42</div></div>
+<div class="ttc" id="classsinga_1_1io_1_1Writer_html_add7c77805b900595c2da748a4df8c448"><div class="ttname"><a href="classsinga_1_1io_1_1Writer.html#add7c77805b900595c2da748a4df8c448">singa::io::Writer::Close</a></div><div class="ttdeci">virtual void Close()=0</div><div class="ttdoc">Release resources. </div></div>
+<div class="ttc" id="classsinga_1_1io_1_1Writer_html_a2427e9a325544ca985b5b6729227f3ef"><div class="ttname"><a href="classsinga_1_1io_1_1Writer.html#a2427e9a325544ca985b5b6729227f3ef">singa::io::Writer::Open</a></div><div class="ttdeci">virtual bool Open(const std::string &amp;path, Mode mode)=0</div><div class="ttdoc">Open a file. </div></div>
+<div class="ttc" id="classsinga_1_1io_1_1BinFileWriter_html"><div class="ttname"><a href="classsinga_1_1io_1_1BinFileWriter.html">singa::io::BinFileWriter</a></div><div class="ttdoc">BinFile stores training/validation/test tuples. </div><div class="ttdef"><b>Definition:</b> writer.h:77</div></div>
+<div class="ttc" id="classsinga_1_1io_1_1BinFileWriter_html_ab3a9f9671370e94505aa41132a4d5e12"><div class="ttname"><a href="classsinga_1_1io_1_1BinFileWriter.html#ab3a9f9671370e94505aa41132a4d5e12">singa::io::BinFileWriter::path</a></div><div class="ttdeci">std::string path()</div><div class="ttdoc">return path to binary file </div><div class="ttdef"><b>Definition:</b> writer.h:91</div></div>
+<div class="ttc" id="classsinga_1_1io_1_1TextFileWriter_html"><div class="ttname"><a href="classsinga_1_1io_1_1TextFileWriter.html">singa::io::TextFileWriter</a></div><div class="ttdoc">TextFileWriter write training/validation/test tuples in CSV file. </div><div class="ttdef"><b>Definition:</b> writer.h:114</div></div>
+<div class="ttc" id="classsinga_1_1io_1_1Writer_html_aa5a4ed9aae85f2f879563d094a6cc4f1"><div class="ttname"><a href="classsinga_1_1io_1_1Writer.html#aa5a4ed9aae85f2f879563d094a6cc4f1">singa::io::Writer::~Writer</a></div><div class="ttdeci">virtual ~Writer()</div><div class="ttdoc">In case that users forget to call Close() to release resources, e.g., memory, you can release them he...</div><div class="ttdef"><b>Definition:</b> writer.h:46</div></div>
+<div class="ttc" id="classsinga_1_1io_1_1Writer_html_afa52a9053af2363cb4680217a10c038a"><div class="ttname"><a href="classsinga_1_1io_1_1Writer.html#afa52a9053af2363cb4680217a10c038a">singa::io::Writer::Write</a></div><div class="ttdeci">virtual bool Write(const std::string &amp;key, const std::string &amp;value)=0</div><div class="ttdoc">Write a key-value tuple. </div></div>
+<div class="ttc" id="classsinga_1_1io_1_1Writer_html_a6dd928130b77f215b90e87b42137da48"><div class="ttname"><a href="classsinga_1_1io_1_1Writer.html#a6dd928130b77f215b90e87b42137da48">singa::io::Writer::Flush</a></div><div class="ttdeci">virtual void Flush()=0</div><div class="ttdoc">Flush writing buffer if it has. </div></div>
+<div class="ttc" id="namespacesinga_html"><div class="ttname"><a href="namespacesinga.html">singa</a></div><div class="ttdoc">Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements...</div><div class="ttdef"><b>Definition:</b> common.h:48</div></div>
+<div class="ttc" id="classsinga_1_1io_1_1TextFileWriter_html_aa68b02d34ab60ee7e8b350370a18c0a4"><div class="ttname"><a href="classsinga_1_1io_1_1TextFileWriter.html#aa68b02d34ab60ee7e8b350370a18c0a4">singa::io::TextFileWriter::path</a></div><div class="ttdeci">std::string path()</div><div class="ttdoc">return path to text file </div><div class="ttdef"><b>Definition:</b> writer.h:126</div></div>
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