<!-- HTML header for doxygen 1.8.14-->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.11"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>Caffe2 - C++ API: caffe2/core/db.cc Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link rel="icon" href="/static/favicon.png" type="image/x-icon">
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></script>
<script type="text/javascript">
$(document).ready(function() { init_search(); });
</script>
<link href="stylesheet.css" rel="stylesheet" type="text/css" />
<link href="main.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td id="projectlogo" width="56"><a href="/"><img alt="Logo" src="Caffe2-with-name-55-tall.png"/></a></td>
<td id="projectalign" style="padding-left: 0.5em;">
<div id="projectname">Caffe2 - C++ API
</div>
<div id="projectbrief">A deep learning, cross platform ML framework</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.11 -->
<script type="text/javascript">
var searchBox = new SearchBox("searchBox", "search",false,'Search');
</script>
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="pages.html"><span>Related Pages</span></a></li>
<li><a href="modules.html"><span>Modules</span></a></li>
<li><a href="annotated.html"><span>Data Structures</span></a></li>
<li class="current"><a href="files.html"><span>Files</span></a></li>
<li><a href="/doxygen-c/html/classes.html"><span>C++ API</span></a></li>
<li><a href="/doxygen-python/html/annotated.html"><span>Python API</span></a></li>
<li><a href="https://github.com/caffe2/caffe2"><span>GitHub</span></a></li>
<li>
<div id="MSearchBox" class="MSearchBoxInactive">
<span class="left">
<img id="MSearchSelect" src="search/mag_sel.png"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
alt=""/>
<input type="text" id="MSearchField" value="Search" accesskey="S"
onfocus="searchBox.OnSearchFieldFocus(true)"
onblur="searchBox.OnSearchFieldFocus(false)"
onkeyup="searchBox.OnSearchFieldChange(event)"/>
</span><span class="right">
<a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a>
</span>
</div>
</li>
</ul>
</div>
<div id="navrow2" class="tabs2">
<ul class="tablist">
<li><a href="files.html"><span>File List</span></a></li>
<li><a href="globals.html"><span>Globals</span></a></li>
</ul>
</div>
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0"
name="MSearchResults" id="MSearchResults">
</iframe>
</div>
<div id="nav-path" class="navpath">
<ul>
<li class="navelem"><a class="el" href="dir_20697b8f204bdfcab31e6b1a416f3ab8.html">caffe2</a></li><li class="navelem"><a class="el" href="dir_78eec69ac3a4b32ad49d9e5fc7146850.html">core</a></li> </ul>
</div>
</div><!-- top -->
<div class="header">
<div class="headertitle">
<div class="title">db.cc</div> </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#include "caffe2/core/db.h"</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="preprocessor">#include <mutex></span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> </div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include "caffe2/core/blob_serialization.h"</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include "caffe2/core/logging.h"</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> </div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="keyword">namespace </span><a class="code" href="namespacecaffe2.html">caffe2</a> {</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> CAFFE_KNOWN_TYPE(db::DBReader);</div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> CAFFE_KNOWN_TYPE(db::Cursor);</div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="keyword">namespace </span>db {</div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> CAFFE_DEFINE_REGISTRY(Caffe2DBRegistry, DB, <span class="keyword">const</span> <span class="keywordtype">string</span>&, Mode);</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="comment">// Below, we provide a bare minimum database "minidb" as a reference</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// implementation as well as a portable choice to store data.</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">// Note that the MiniDB classes are not exposed via a header file - they should</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// be created directly via the db interface. See MiniDB for details.</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div><div class="line"><a name="l00022"></a><span class="lineno"><a class="line" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html"> 22</a></span> <span class="keyword">class </span><a class="code" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html">MiniDBCursor</a> : <span class="keyword">public</span> <a class="code" href="classcaffe2_1_1db_1_1_cursor.html">Cursor</a> {</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <span class="keyword">explicit</span> <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html">MiniDBCursor</a>(FILE* f, std::mutex* mutex)</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  : file_(f), lock_(*mutex), valid_(<span class="keyword">true</span>) {</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="comment">// We call Next() to read in the first entry.</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#a82068ca378a93737c2758085a267d4ab">Next</a>();</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  }</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  ~<a class="code" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html">MiniDBCursor</a>() {}</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div><div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#a7ad75f0ead5e22c35c569c198a1efe2d"> 31</a></span>  <span class="keywordtype">void</span> <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#a7ad75f0ead5e22c35c569c198a1efe2d">Seek</a>(<span class="keyword">const</span> <span class="keywordtype">string</span>& <span class="comment">/*key*/</span>)<span class="keyword"> override </span>{</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  LOG(FATAL) << <span class="stringliteral">"MiniDB does not support seeking to a specific key."</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"> 34</span> </div><div class="line"><a name="l00035"></a><span class="lineno"><a class="line" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#a85119b080fb67cacef91eb021a0bf6d1"> 35</a></span>  <span class="keywordtype">void</span> <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#a85119b080fb67cacef91eb021a0bf6d1">SeekToFirst</a>()<span class="keyword"> override </span>{</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  fseek(file_, 0, SEEK_SET);</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  CAFFE_ENFORCE(!feof(file_), <span class="stringliteral">"Hmm, empty file?"</span>);</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="comment">// Read the first item.</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  valid_ = <span class="keyword">true</span>;</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#a82068ca378a93737c2758085a267d4ab">Next</a>();</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  }</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div><div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#a82068ca378a93737c2758085a267d4ab"> 43</a></span>  <span class="keywordtype">void</span> <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#a82068ca378a93737c2758085a267d4ab">Next</a>()<span class="keyword"> override </span>{</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="comment">// First, read in the key and value length.</span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">if</span> (fread(&key_len_, <span class="keyword">sizeof</span>(<span class="keywordtype">int</span>), 1, file_) == 0) {</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="comment">// Reaching EOF.</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  VLOG(1) << <span class="stringliteral">"EOF reached, setting valid to false"</span>;</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  valid_ = <span class="keyword">false</span>;</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  }</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  CAFFE_ENFORCE_EQ(fread(&value_len_, <span class="keyword">sizeof</span>(<span class="keywordtype">int</span>), 1, file_), 1);</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  CAFFE_ENFORCE_GT(key_len_, 0);</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  CAFFE_ENFORCE_GT(value_len_, 0);</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="comment">// Resize if the key and value len is larger than the current one.</span></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">if</span> (key_len_ > key_.size()) {</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  key_.resize(key_len_);</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>  <span class="keywordflow">if</span> (value_len_ > value_.size()) {</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  value_.resize(value_len_);</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  }</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="comment">// Actually read in the contents.</span></div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  CAFFE_ENFORCE_EQ(</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  fread(key_.data(), <span class="keyword">sizeof</span>(char), key_len_, file_), key_len_);</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  CAFFE_ENFORCE_EQ(</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  fread(value_.data(), <span class="keyword">sizeof</span>(char), value_len_, file_), value_len_);</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="comment">// Note(Yangqing): as we read the file, the cursor naturally moves to the</span></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="comment">// beginning of the next entry.</span></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  }</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div><div class="line"><a name="l00070"></a><span class="lineno"><a class="line" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#afc8dc13b7b31ba00a480cc885e98698b"> 70</a></span>  <span class="keywordtype">string</span> <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#afc8dc13b7b31ba00a480cc885e98698b">key</a>()<span class="keyword"> override </span>{</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  CAFFE_ENFORCE(valid_, <span class="stringliteral">"Cursor is at invalid location!"</span>);</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">return</span> string(key_.data(), key_len_);</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> </div><div class="line"><a name="l00075"></a><span class="lineno"><a class="line" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#ab44105b03e360928cad56851f1af309c"> 75</a></span>  <span class="keywordtype">string</span> <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#ab44105b03e360928cad56851f1af309c">value</a>()<span class="keyword"> override </span>{</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  CAFFE_ENFORCE(valid_, <span class="stringliteral">"Cursor is at invalid location!"</span>);</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">return</span> string(value_.data(), value_len_);</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  }</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div><div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#ad421d42d8f4910c998049deffcab6cb7"> 80</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#ad421d42d8f4910c998049deffcab6cb7">Valid</a>()<span class="keyword"> override </span>{ <span class="keywordflow">return</span> valid_; }</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  FILE* file_;</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  std::lock_guard<std::mutex> lock_;</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordtype">bool</span> valid_;</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordtype">int</span> key_len_;</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  vector<char> key_;</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordtype">int</span> value_len_;</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  vector<char> value_;</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> };</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div><div class="line"><a name="l00092"></a><span class="lineno"><a class="line" href="classcaffe2_1_1db_1_1_mini_d_b_transaction.html"> 92</a></span> <span class="keyword">class </span><a class="code" href="classcaffe2_1_1db_1_1_mini_d_b_transaction.html">MiniDBTransaction</a> : <span class="keyword">public</span> <a class="code" href="classcaffe2_1_1db_1_1_transaction.html">Transaction</a> {</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keyword">explicit</span> <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b_transaction.html">MiniDBTransaction</a>(FILE* f, std::mutex* mutex)</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  : file_(f), lock_(*mutex) {}</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  ~<a class="code" href="classcaffe2_1_1db_1_1_mini_d_b_transaction.html">MiniDBTransaction</a>() {</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  Commit();</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  }</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div><div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="classcaffe2_1_1db_1_1_mini_d_b_transaction.html#a612bbe3d67be8b3db8c3cda6594f1cb0"> 100</a></span>  <span class="keywordtype">void</span> <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b_transaction.html#a612bbe3d67be8b3db8c3cda6594f1cb0">Put</a>(<span class="keyword">const</span> <span class="keywordtype">string</span>& <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#afc8dc13b7b31ba00a480cc885e98698b">key</a>, <span class="keyword">const</span> <span class="keywordtype">string</span>& <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#ab44105b03e360928cad56851f1af309c">value</a>)<span class="keyword"> override </span>{</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordtype">int</span> key_len = key.size();</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordtype">int</span> value_len = value.size();</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  CAFFE_ENFORCE_EQ(fwrite(&key_len, <span class="keyword">sizeof</span>(<span class="keywordtype">int</span>), 1, file_), 1);</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  CAFFE_ENFORCE_EQ(fwrite(&value_len, <span class="keyword">sizeof</span>(<span class="keywordtype">int</span>), 1, file_), 1);</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  CAFFE_ENFORCE_EQ(</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  fwrite(key.c_str(), <span class="keyword">sizeof</span>(char), key_len, file_), key_len);</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  CAFFE_ENFORCE_EQ(</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  fwrite(value.c_str(), <span class="keyword">sizeof</span>(char), value_len, file_), value_len);</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  }</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div><div class="line"><a name="l00111"></a><span class="lineno"><a class="line" href="classcaffe2_1_1db_1_1_mini_d_b_transaction.html#aa44c32d5a6253ff2fed65fd4cfba977d"> 111</a></span>  <span class="keywordtype">void</span> <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b_transaction.html#aa44c32d5a6253ff2fed65fd4cfba977d">Commit</a>()<span class="keyword"> override </span>{</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordflow">if</span> (file_ != <span class="keyword">nullptr</span>) {</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  CAFFE_ENFORCE_EQ(fflush(file_), 0);</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  file_ = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  }</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  }</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  FILE* file_;</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  std::lock_guard<std::mutex> lock_;</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  DISABLE_COPY_AND_ASSIGN(<a class="code" href="classcaffe2_1_1db_1_1_mini_d_b_transaction.html">MiniDBTransaction</a>);</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> };</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div><div class="line"><a name="l00125"></a><span class="lineno"><a class="line" href="classcaffe2_1_1db_1_1_mini_d_b.html"> 125</a></span> <span class="keyword">class </span><a class="code" href="classcaffe2_1_1db_1_1_mini_d_b.html">MiniDB</a> : <span class="keyword">public</span> <a class="code" href="classcaffe2_1_1db_1_1_d_b.html">DB</a> {</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b.html">MiniDB</a>(<span class="keyword">const</span> <span class="keywordtype">string</span>& source, Mode mode) : <a class="code" href="classcaffe2_1_1db_1_1_d_b.html">DB</a>(source, mode), file_(<span class="keyword">nullptr</span>) {</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">switch</span> (mode) {</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordflow">case</span> NEW:</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  file_ = fopen(source.c_str(), <span class="stringliteral">"wb"</span>);</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">case</span> WRITE:</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  file_ = fopen(source.c_str(), <span class="stringliteral">"ab"</span>);</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  fseek(file_, 0, SEEK_END);</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">case</span> READ:</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  file_ = fopen(source.c_str(), <span class="stringliteral">"rb"</span>);</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  }</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  CAFFE_ENFORCE(file_, <span class="stringliteral">"Cannot open file: "</span> + source);</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  VLOG(1) << <span class="stringliteral">"Opened MiniDB "</span> << source;</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  }</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  ~<a class="code" href="classcaffe2_1_1db_1_1_mini_d_b.html">MiniDB</a>() { Close(); }</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div><div class="line"><a name="l00145"></a><span class="lineno"><a class="line" href="classcaffe2_1_1db_1_1_mini_d_b.html#a5537426b78bc8127b2f77c27c977200c"> 145</a></span>  <span class="keywordtype">void</span> <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b.html#a5537426b78bc8127b2f77c27c977200c">Close</a>()<span class="keyword"> override </span>{</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordflow">if</span> (file_) {</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  fclose(file_);</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>  file_ = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  }</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span> </div><div class="line"><a name="l00152"></a><span class="lineno"><a class="line" href="classcaffe2_1_1db_1_1_mini_d_b.html#a1205f750c866c79a6784f9c3e029f8ad"> 152</a></span>  unique_ptr<Cursor> <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b.html#a1205f750c866c79a6784f9c3e029f8ad">NewCursor</a>()<span class="keyword"> override </span>{</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  CAFFE_ENFORCE_EQ(this->mode_, READ);</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">return</span> make_unique<MiniDBCursor>(file_, &file_access_mutex_);</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  }</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span> </div><div class="line"><a name="l00157"></a><span class="lineno"><a class="line" href="classcaffe2_1_1db_1_1_mini_d_b.html#a6f03c1ecb3f8dc108f13e4ebc44fbc40"> 157</a></span>  unique_ptr<Transaction> <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b.html#a6f03c1ecb3f8dc108f13e4ebc44fbc40">NewTransaction</a>()<span class="keyword"> override </span>{</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  CAFFE_ENFORCE(this->mode_ == NEW || this->mode_ == WRITE);</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">return</span> make_unique<MiniDBTransaction>(file_, &file_access_mutex_);</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  }</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span> </div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  FILE* file_;</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="comment">// access mutex makes sure we don't have multiple cursors/transactions</span></div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="comment">// reading the same file.</span></div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  std::mutex file_access_mutex_;</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span> };</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span> </div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span> REGISTER_CAFFE2_DB(<a class="code" href="classcaffe2_1_1db_1_1_mini_d_b.html">MiniDB</a>, <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b.html">MiniDB</a>);</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span> REGISTER_CAFFE2_DB(minidb, <a class="code" href="classcaffe2_1_1db_1_1_mini_d_b.html">MiniDB</a>);</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span> </div><div class="line"><a name="l00172"></a><span class="lineno"><a class="line" href="classcaffe2_1_1db_1_1_d_b_reader_serializer.html#a261ff53d07a41583886ffff0d1a0a760"> 172</a></span> <span class="keywordtype">void</span> <a class="code" href="classcaffe2_1_1db_1_1_d_b_reader_serializer.html#a261ff53d07a41583886ffff0d1a0a760">DBReaderSerializer::Serialize</a>(</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keyword">const</span> <a class="code" href="classcaffe2_1_1_blob.html">Blob</a>& blob,</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keyword">const</span> <span class="keywordtype">string</span>& name,</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  BlobSerializerBase::SerializationAcceptor acceptor) {</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  CAFFE_ENFORCE(blob.<a class="code" href="classcaffe2_1_1_blob.html#a2200340329c81963cb0aa885f1af7958">IsType</a><<a class="code" href="classcaffe2_1_1db_1_1_d_b_reader.html">DBReader</a>>());</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keyword">auto</span>& reader = blob.<a class="code" href="classcaffe2_1_1_blob.html#aad0bb1254349e2c96fcdb719166f2628">Get</a><<a class="code" href="classcaffe2_1_1db_1_1_d_b_reader.html">DBReader</a>>();</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  DBReaderProto proto;</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  proto.set_name(name);</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  proto.set_source(reader.source_);</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  proto.set_db_type(reader.db_type_);</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keywordflow">if</span> (reader.cursor() && reader.cursor()->SupportsSeek()) {</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  proto.set_key(reader.cursor()->key());</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  }</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  BlobProto blob_proto;</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  blob_proto.set_name(name);</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  blob_proto.set_type(<span class="stringliteral">"DBReader"</span>);</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  blob_proto.set_content(proto.SerializeAsString());</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  acceptor(name, blob_proto.SerializeAsString());</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span> }</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span> </div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="keywordtype">void</span> DBReaderDeserializer::Deserialize(<span class="keyword">const</span> BlobProto& proto, <a class="code" href="classcaffe2_1_1_blob.html">Blob</a>* blob) {</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  DBReaderProto reader_proto;</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  CAFFE_ENFORCE(</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  reader_proto.ParseFromString(proto.content()),</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="stringliteral">"Cannot parse content into a DBReaderProto."</span>);</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  blob-><a class="code" href="classcaffe2_1_1_blob.html#a3fd4d67f8c8d27c80041cef53468dbf1">Reset</a>(<span class="keyword">new</span> <a class="code" href="classcaffe2_1_1db_1_1_d_b_reader.html">DBReader</a>(reader_proto));</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span> }</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span> </div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="keyword">namespace </span>{</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="comment">// Serialize TensorCPU.</span></div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span> REGISTER_BLOB_SERIALIZER((TypeMeta::Id<DBReader>()),</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <a class="code" href="classcaffe2_1_1db_1_1_d_b_reader_serializer.html">DBReaderSerializer</a>);</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span> REGISTER_BLOB_DESERIALIZER(<a class="code" href="classcaffe2_1_1db_1_1_d_b_reader.html">DBReader</a>, <a class="code" href="classcaffe2_1_1db_1_1_d_b_reader_deserializer.html">DBReaderDeserializer</a>);</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span> } <span class="comment">// namespace</span></div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span> </div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span> } <span class="comment">// namespace db</span></div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span> } <span class="comment">// namespace caffe2</span></div><div class="ttc" id="classcaffe2_1_1db_1_1_mini_d_b_html_a6f03c1ecb3f8dc108f13e4ebc44fbc40"><div class="ttname"><a href="classcaffe2_1_1db_1_1_mini_d_b.html#a6f03c1ecb3f8dc108f13e4ebc44fbc40">caffe2::db::MiniDB::NewTransaction</a></div><div class="ttdeci">unique_ptr< Transaction > NewTransaction() override</div><div class="ttdoc">Returns a transaction to write data to the database. </div><div class="ttdef"><b>Definition:</b> <a href="db_8cc_source.html#l00157">db.cc:157</a></div></div>
<div class="ttc" id="classcaffe2_1_1_blob_html"><div class="ttname"><a href="classcaffe2_1_1_blob.html">caffe2::Blob</a></div><div class="ttdoc">Blob is a general container that hosts a typed pointer. </div><div class="ttdef"><b>Definition:</b> <a href="blob_8h_source.html#l00025">blob.h:25</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_mini_d_b_cursor_html_afc8dc13b7b31ba00a480cc885e98698b"><div class="ttname"><a href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#afc8dc13b7b31ba00a480cc885e98698b">caffe2::db::MiniDBCursor::key</a></div><div class="ttdeci">string key() override</div><div class="ttdoc">Returns the current key. </div><div class="ttdef"><b>Definition:</b> <a href="db_8cc_source.html#l00070">db.cc:70</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_transaction_html"><div class="ttname"><a href="classcaffe2_1_1db_1_1_transaction.html">caffe2::db::Transaction</a></div><div class="ttdoc">An abstract class for the current database transaction while writing. </div><div class="ttdef"><b>Definition:</b> <a href="db_8h_source.html#l00061">db.h:61</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_cursor_html"><div class="ttname"><a href="classcaffe2_1_1db_1_1_cursor.html">caffe2::db::Cursor</a></div><div class="ttdoc">An abstract class for the cursor of the database while reading. </div><div class="ttdef"><b>Definition:</b> <a href="db_8h_source.html#l00022">db.h:22</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_mini_d_b_cursor_html_ad421d42d8f4910c998049deffcab6cb7"><div class="ttname"><a href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#ad421d42d8f4910c998049deffcab6cb7">caffe2::db::MiniDBCursor::Valid</a></div><div class="ttdeci">bool Valid() override</div><div class="ttdoc">Returns whether the current location is valid - for example, if we have reached the end of the databa...</div><div class="ttdef"><b>Definition:</b> <a href="db_8cc_source.html#l00080">db.cc:80</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_mini_d_b_html_a1205f750c866c79a6784f9c3e029f8ad"><div class="ttname"><a href="classcaffe2_1_1db_1_1_mini_d_b.html#a1205f750c866c79a6784f9c3e029f8ad">caffe2::db::MiniDB::NewCursor</a></div><div class="ttdeci">unique_ptr< Cursor > NewCursor() override</div><div class="ttdoc">Returns a cursor to read the database. </div><div class="ttdef"><b>Definition:</b> <a href="db_8cc_source.html#l00152">db.cc:152</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_d_b_reader_html"><div class="ttname"><a href="classcaffe2_1_1db_1_1_d_b_reader.html">caffe2::db::DBReader</a></div><div class="ttdoc">A reader wrapper for DB that also allows us to serialize it. </div><div class="ttdef"><b>Definition:</b> <a href="db_8h_source.html#l00144">db.h:144</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_mini_d_b_cursor_html_a82068ca378a93737c2758085a267d4ab"><div class="ttname"><a href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#a82068ca378a93737c2758085a267d4ab">caffe2::db::MiniDBCursor::Next</a></div><div class="ttdeci">void Next() override</div><div class="ttdoc">Go to the next location in the database. </div><div class="ttdef"><b>Definition:</b> <a href="db_8cc_source.html#l00043">db.cc:43</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_mini_d_b_html"><div class="ttname"><a href="classcaffe2_1_1db_1_1_mini_d_b.html">caffe2::db::MiniDB</a></div><div class="ttdef"><b>Definition:</b> <a href="db_8cc_source.html#l00125">db.cc:125</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_mini_d_b_cursor_html_a85119b080fb67cacef91eb021a0bf6d1"><div class="ttname"><a href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#a85119b080fb67cacef91eb021a0bf6d1">caffe2::db::MiniDBCursor::SeekToFirst</a></div><div class="ttdeci">void SeekToFirst() override</div><div class="ttdoc">Seek to the first key in the database. </div><div class="ttdef"><b>Definition:</b> <a href="db_8cc_source.html#l00035">db.cc:35</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_mini_d_b_html_a5537426b78bc8127b2f77c27c977200c"><div class="ttname"><a href="classcaffe2_1_1db_1_1_mini_d_b.html#a5537426b78bc8127b2f77c27c977200c">caffe2::db::MiniDB::Close</a></div><div class="ttdeci">void Close() override</div><div class="ttdoc">Closes the database. </div><div class="ttdef"><b>Definition:</b> <a href="db_8cc_source.html#l00145">db.cc:145</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_mini_d_b_transaction_html_a612bbe3d67be8b3db8c3cda6594f1cb0"><div class="ttname"><a href="classcaffe2_1_1db_1_1_mini_d_b_transaction.html#a612bbe3d67be8b3db8c3cda6594f1cb0">caffe2::db::MiniDBTransaction::Put</a></div><div class="ttdeci">void Put(const string &key, const string &value) override</div><div class="ttdoc">Puts the key value pair to the database. </div><div class="ttdef"><b>Definition:</b> <a href="db_8cc_source.html#l00100">db.cc:100</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_mini_d_b_cursor_html_ab44105b03e360928cad56851f1af309c"><div class="ttname"><a href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#ab44105b03e360928cad56851f1af309c">caffe2::db::MiniDBCursor::value</a></div><div class="ttdeci">string value() override</div><div class="ttdoc">Returns the current value. </div><div class="ttdef"><b>Definition:</b> <a href="db_8cc_source.html#l00075">db.cc:75</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_d_b_reader_serializer_html"><div class="ttname"><a href="classcaffe2_1_1db_1_1_d_b_reader_serializer.html">caffe2::db::DBReaderSerializer</a></div><div class="ttdef"><b>Definition:</b> <a href="db_8h_source.html#l00291">db.h:291</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_mini_d_b_transaction_html"><div class="ttname"><a href="classcaffe2_1_1db_1_1_mini_d_b_transaction.html">caffe2::db::MiniDBTransaction</a></div><div class="ttdef"><b>Definition:</b> <a href="db_8cc_source.html#l00092">db.cc:92</a></div></div>
<div class="ttc" id="namespacecaffe2_html"><div class="ttname"><a href="namespacecaffe2.html">caffe2</a></div><div class="ttdoc">A global dictionary that holds information about what Caffe2 modules have been loaded in the current ...</div><div class="ttdef"><b>Definition:</b> <a href="convert__encoded__to__raw__leveldb_8cc_source.html#l00047">convert_encoded_to_raw_leveldb.cc:47</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_mini_d_b_cursor_html"><div class="ttname"><a href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html">caffe2::db::MiniDBCursor</a></div><div class="ttdef"><b>Definition:</b> <a href="db_8cc_source.html#l00022">db.cc:22</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_d_b_html"><div class="ttname"><a href="classcaffe2_1_1db_1_1_d_b.html">caffe2::db::DB</a></div><div class="ttdoc">An abstract class for accessing a database of key-value pairs. </div><div class="ttdef"><b>Definition:</b> <a href="db_8h_source.html#l00080">db.h:80</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_d_b_reader_serializer_html_a261ff53d07a41583886ffff0d1a0a760"><div class="ttname"><a href="classcaffe2_1_1db_1_1_d_b_reader_serializer.html#a261ff53d07a41583886ffff0d1a0a760">caffe2::db::DBReaderSerializer::Serialize</a></div><div class="ttdeci">void Serialize(const Blob &blob, const string &name, BlobSerializerBase::SerializationAcceptor acceptor) override</div><div class="ttdoc">Serializes a DBReader. </div><div class="ttdef"><b>Definition:</b> <a href="db_8cc_source.html#l00172">db.cc:172</a></div></div>
<div class="ttc" id="classcaffe2_1_1_blob_html_a3fd4d67f8c8d27c80041cef53468dbf1"><div class="ttname"><a href="classcaffe2_1_1_blob.html#a3fd4d67f8c8d27c80041cef53468dbf1">caffe2::Blob::Reset</a></div><div class="ttdeci">T * Reset(T *allocated)</div><div class="ttdoc">Sets the underlying object to the allocated one. </div><div class="ttdef"><b>Definition:</b> <a href="blob_8h_source.html#l00121">blob.h:121</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_mini_d_b_cursor_html_a7ad75f0ead5e22c35c569c198a1efe2d"><div class="ttname"><a href="classcaffe2_1_1db_1_1_mini_d_b_cursor.html#a7ad75f0ead5e22c35c569c198a1efe2d">caffe2::db::MiniDBCursor::Seek</a></div><div class="ttdeci">void Seek(const string &) override</div><div class="ttdoc">Seek to a specific key (or if the key does not exist, seek to the immediate next). </div><div class="ttdef"><b>Definition:</b> <a href="db_8cc_source.html#l00031">db.cc:31</a></div></div>
<div class="ttc" id="classcaffe2_1_1_blob_html_a2200340329c81963cb0aa885f1af7958"><div class="ttname"><a href="classcaffe2_1_1_blob.html#a2200340329c81963cb0aa885f1af7958">caffe2::Blob::IsType</a></div><div class="ttdeci">bool IsType() const </div><div class="ttdoc">Checks if the content stored in the blob is of type T. </div><div class="ttdef"><b>Definition:</b> <a href="blob_8h_source.html#l00058">blob.h:58</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_d_b_reader_deserializer_html"><div class="ttname"><a href="classcaffe2_1_1db_1_1_d_b_reader_deserializer.html">caffe2::db::DBReaderDeserializer</a></div><div class="ttdef"><b>Definition:</b> <a href="db_8h_source.html#l00303">db.h:303</a></div></div>
<div class="ttc" id="classcaffe2_1_1_blob_html_aad0bb1254349e2c96fcdb719166f2628"><div class="ttname"><a href="classcaffe2_1_1_blob.html#aad0bb1254349e2c96fcdb719166f2628">caffe2::Blob::Get</a></div><div class="ttdeci">const T & Get() const </div><div class="ttdoc">Gets the const reference of the stored object. </div><div class="ttdef"><b>Definition:</b> <a href="blob_8h_source.html#l00075">blob.h:75</a></div></div>
<div class="ttc" id="classcaffe2_1_1db_1_1_mini_d_b_transaction_html_aa44c32d5a6253ff2fed65fd4cfba977d"><div class="ttname"><a href="classcaffe2_1_1db_1_1_mini_d_b_transaction.html#aa44c32d5a6253ff2fed65fd4cfba977d">caffe2::db::MiniDBTransaction::Commit</a></div><div class="ttdeci">void Commit() override</div><div class="ttdoc">Commits the current writes. </div><div class="ttdef"><b>Definition:</b> <a href="db_8cc_source.html#l00111">db.cc:111</a></div></div>
</div><!-- fragment --></div><!-- contents -->
<!-- HTML footer for doxygen 1.8.14-->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated on Thu Apr 19 2018 13:03:49 for Caffe2 - C++ API by  <a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.11
</small></address>
<div class="footerContainer">
<div id="footer_wrap" class="wrapper footerWrapper">
<div class="footerBlocks">
<div id="fb_oss" class="footerSection fbOpenSourceFooter">
<svg class="facebookOSSLogoSvg" viewBox="0 0 1133.9 1133.9" x="0px" y="0px" height=50 width=50>
<g>
<path class="logoRing outerRing" d="M 498.3 3.7 c 153.6 88.9 307.3 177.7 461.1 266.2 c 7.6 4.4 10.3 9.1 10.3 17.8 c -0.3 179.1 -0.2 358.3 0 537.4 c 0 8.1 -2.4 12.8 -9.7 17.1 c -154.5 88.9 -308.8 178.1 -462.9 267.5 c -9 5.2 -15.5 5.3 -24.6 0.1 c -153.9 -89.2 -307.9 -178 -462.1 -266.8 C 3 838.8 0 833.9 0 825.1 c 0.3 -179.1 0.2 -358.3 0 -537.4 c 0 -8.6 2.6 -13.6 10.2 -18 C 164.4 180.9 318.4 92 472.4 3 C 477 -1.5 494.3 -0.7 498.3 3.7 Z M 48.8 555.3 c 0 79.9 0.2 159.9 -0.2 239.8 c -0.1 10 3 15.6 11.7 20.6 c 137.2 78.8 274.2 157.8 411 237.3 c 9.9 5.7 17 5.7 26.8 0.1 c 137.5 -79.8 275.2 -159.2 412.9 -238.5 c 7.4 -4.3 10.5 -8.9 10.5 -17.8 c -0.3 -160.2 -0.3 -320.5 0 -480.7 c 0 -8.8 -2.8 -13.6 -10.3 -18 C 772.1 218 633.1 137.8 494.2 57.4 c -6.5 -3.8 -11.5 -4.5 -18.5 -0.5 C 336.8 137.4 197.9 217.7 58.8 297.7 c -7.7 4.4 -10.2 9.2 -10.2 17.9 C 48.9 395.5 48.8 475.4 48.8 555.3 Z" />
<path class="logoRing middleRing" d="M 184.4 555.9 c 0 -33.3 -1 -66.7 0.3 -100 c 1.9 -48 24.1 -86 64.7 -110.9 c 54.8 -33.6 110.7 -65.5 167 -96.6 c 45.7 -25.2 92.9 -24.7 138.6 1 c 54.4 30.6 108.7 61.5 162.2 93.7 c 44 26.5 67.3 66.8 68 118.4 c 0.9 63.2 0.9 126.5 0 189.7 c -0.7 50.6 -23.4 90.7 -66.6 116.9 c -55 33.4 -110.8 65.4 -167.1 96.5 c -43.4 24 -89 24.2 -132.3 0.5 c -57.5 -31.3 -114.2 -64 -170 -98.3 c -41 -25.1 -62.9 -63.7 -64.5 -112.2 C 183.5 621.9 184.3 588.9 184.4 555.9 Z M 232.9 556.3 c 0 29.5 0.5 59.1 -0.1 88.6 c -0.8 39.2 16.9 67.1 50.2 86.2 c 51.2 29.4 102.2 59.2 153.4 88.4 c 31.4 17.9 63.6 18.3 95 0.6 c 53.7 -30.3 107.1 -61.2 160.3 -92.5 c 29.7 -17.5 45 -44.5 45.3 -78.8 c 0.6 -61.7 0.5 -123.5 0 -185.2 c -0.3 -34.4 -15.3 -61.5 -44.9 -79 C 637.7 352.6 583 320.8 527.9 290 c -27.5 -15.4 -57.2 -16.1 -84.7 -0.7 c -56.9 31.6 -113.4 64 -169.1 97.6 c -26.4 15.9 -40.7 41.3 -41.1 72.9 C 232.6 491.9 232.9 524.1 232.9 556.3 Z" />
<path class="logoRing innerRing" d="M 484.9 424.4 c 69.8 -2.8 133.2 57.8 132.6 132 C 617 630 558.5 688.7 484.9 689.1 c -75.1 0.4 -132.6 -63.6 -132.7 -132.7 C 352.1 485 413.4 421.5 484.9 424.4 Z M 401.3 556.7 c -3.4 37.2 30.5 83.6 83 84.1 c 46.6 0.4 84.8 -37.6 84.9 -84 c 0.1 -46.6 -37.2 -84.4 -84.2 -84.6 C 432.2 472.1 397.9 518.3 401.3 556.7 Z" />
</g>
</svg>
<h2>Facebook Open Source</h2>
</div>
<div class="footerSection">
<a class="footerLink" href="https://code.facebook.com/projects/" target="_blank">Open Source Projects</a>
<a class="footerLink" href="https://github.com/facebook/" target="_blank">GitHub</a>
<a class="footerLink" href="https://twitter.com/fbOpenSource" target="_blank">Twitter</a>
</div>
<div class="footerSection rightAlign">
<a class="footerLink" href="https://github.com/caffe2/caffe2" target="_blank">Contribute to this project on GitHub</a>
</div>
</div>
</div>
</div>
<script type="text/javascript" src="/js/jekyll-link-anchors.js"></script>
<script>
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
ga('create', '{{ site.gacode }}', 'auto');
ga('send', 'pageview');
</script>
</body>
</html>