http://git-wip-us.apache.org/repos/asf/arrow-site/blob/8673db8b/docs/cpp/buffer_8h_source.html ---------------------------------------------------------------------- diff --git a/docs/cpp/buffer_8h_source.html b/docs/cpp/buffer_8h_source.html index b7fc587..b278d64 100644 --- a/docs/cpp/buffer_8h_source.html +++ b/docs/cpp/buffer_8h_source.html @@ -5,7 +5,7 @@ <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.13"/> <meta name="viewport" content="width=device-width, initial-scale=1"/> -<title>Apache Arrow (C++): /home/wesm/code/arrow/cpp/src/arrow/buffer.h Source File</title> +<title>Apache Arrow (C++): /apache-arrow/arrow/cpp/src/arrow/buffer.h Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> @@ -67,67 +67,68 @@ $(function() { <div class="title">buffer.h</div> </div> </div><!--header--> <div class="contents"> -<a href="buffer_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Licensed to the Apache Software Foundation (ASF) under one</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// or more contributor license agreements. See the NOTICE file</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// distributed with this work for additional information</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// regarding copyright ownership. The ASF licenses this file</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// to you under the Apache License, Version 2.0 (the</span></div><div class="line"><a name="l00006"></a><span class= "lineno"> 6</span> <span class="comment">// "License"); you may not use this file except in compliance</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// with the License. You may obtain a copy of the License at</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">//</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">//</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// Unless required by applicable law or agreed to in writing,</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// software distributed un der the License is distributed on an</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// KIND, either express or implied. See the License for the</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">// specific language governing permissions and limitations</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">// under the License.</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#ifndef ARROW_BUFFER_H</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19< /span> <span class="preprocessor">#define ARROW_BUFFER_H</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <algorithm></span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <cstdint></span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <cstring></span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <memory></span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <string></span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <type_traits ></span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include "<a class="code" href="status_8h.html">arrow/status.h</a>"</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include "<a class="code" href="bit-util_8h.html">arrow/util/bit-util.h</a>"</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include "<a class="code" href="macros_8h.html">arrow/util/macros.h</a>"</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "<a class="code" href="visibility_8h.html">arrow/util/visibility.h</a>"</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">namespace </span><a class="code" href="namespacearrow.html">arrow</a> {</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">class </span>MemoryPool;</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">// ----------------------------------------------------------------------</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment">// Buffer classes</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div><div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html"> 48</a></span>& #160;<span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_buffer.html">Buffer</a> {</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a801078c559b0c351f1ca5a6b6a04488f"> 50</a></span>  <a class="code" href="classarrow_1_1_buffer.html#a801078c559b0c351f1ca5a6b6a04488f">Buffer</a>(<span class="keyword">const</span> uint8_t* data, int64_t size)</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  : is_mutable_(false), data_(data), size_(size), capacity_(size) {}</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keyword">virtual</span> ~<a class="code" href="classarrow_1_1_buffer.html">Buffer</a>() = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div><div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#af694696afedb9313cf5dc874ffa9a453"> 62</a></span>  <a class="code" href="classarrow_1_1_buffer.html#af694696afedb9313cf5dc874ffa9a453">Buffer</a>(<span class="keyword">const</span> std::shared_ptr<Buffer>& parent, <span class="keyword">const</span> int64_t offset, <span class="keyword">const</span> int64_t size)</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  : <a class="code" href="classarrow_1_1_buffer.html">Buffer</a>(parent->data() + offset, size) {</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  parent_ = parent;</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  }</div><div class="line"><a name="l00066"></a>< span class="lineno"> 66</span> </div><div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a8244f9c354364788161f11bedc6f2ab9"> 67</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classarrow_1_1_buffer.html#a8244f9c354364788161f11bedc6f2ab9">is_mutable</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> is_mutable_; }</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordtype">bool</span> Equals(<span class="keyword">const</span> <a class="code" href="classarrow_1_1_buffer.html">Buffer</a>& other, int64_t nbytes) <span class="keyword">const</span>;</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordtype">bool</span> Equals(<span class="keyword">const</span> <a class="code" href="classarrow_1_1_buffer.html">Buffer</a>& other) <span class="keyword">const</span>;</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Copy(<span class="keyword">const</span> int64_t start, <span class="keyword">const</span> int64_t nbytes, <a class="code" href="classarrow_1_1_memory_pool.html">MemoryPool</a>* pool,</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  std::shared_ptr<Buffer>* out) <span class="keyword">const</span>;</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Copy(<span class="keyword">const</span> int64_t start, <span class="keyword">const</span> i nt64_t nbytes,</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  std::shared_ptr<Buffer>* out) <span class="keyword">const</span>;</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div><div class="line"><a name="l00082"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a4c75902129b5f2fb471fd166907361dc"> 82</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer.html#a4c75902129b5f2fb471fd166907361dc">capacity</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> capacity_; }</div><div class="line"><a name="l00083"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a81c3dd8c11dd804be2ada6df5ce8fad2"> 83</a></span>  <span class="keyword">const</span> uint8_t* <a class="code" href="classarrow_1_1_buffer.html#a81c3dd8c11dd804be2ada6df5ce8fad2">data</a>()<span class="keyword"> const </span>{ <span clas s="keywordflow">return</span> data_; }</div><div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a5a9cb9324d3f7e323eb070b553c925aa"> 84</a></span>  uint8_t* <a class="code" href="classarrow_1_1_buffer.html#a5a9cb9324d3f7e323eb070b553c925aa">mutable_data</a>() { <span class="keywordflow">return</span> mutable_data_; }</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div><div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a2a49871341c300996a39145d22aa8054"> 86</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer.html#a2a49871341c300996a39145d22aa8054">size</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> size_; }</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div><div class="line"><a name="l00088"></a><span class="lineno"><a class="line" hre f="classarrow_1_1_buffer.html#ac58d818fa0d8a5db215ca858c5e6aece"> 88</a></span>  std::shared_ptr<Buffer> <a class="code" href="classarrow_1_1_buffer.html#ac58d818fa0d8a5db215ca858c5e6aece">parent</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> parent_; }</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00091"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#acfefa777b4d7d6a2f7a8ea23549dac46"> 91</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classarrow_1_1_buffer.html#acfefa777b4d7d6a2f7a8ea23549dac46">is_mutable_</a>;</div><div class="line"><a name="l00092"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#af468a7a1f346f9a6a29738bf585a3548"> 92</a></span>  <span class="keyword">const</span> uint8_t* <a class="code" href="classarrow_1_1_buffer.html#af468a7a1f346f9a6a29738bf585a3548">data_</a>;</div><div class="line"><a name="l00093"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#ad36e306b99bc8427865bcac9b2d4f7e5"> 93</a></span>  uint8_t* <a class="code" href="classarrow_1_1_buffer.html#ad36e306b99bc8427865bcac9b2d4f7e5">mutable_data_</a>;</div><div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a3500e42217635843b3b34bfe92b2f73a"> 94</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer.html#a3500e42217635843b3b34bfe92b2f73a">size_</a>;</div><div class="line"><a name="l00095"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a45ee7f1e21f9f3f4cb8233be8d64731e"> 95</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer.html#a45ee7f1e21f9f3f4cb8233be8d64731e">capacity_</a>;</div><div class=" line"><a name="l00096"></a><span class="lineno"> 96</span> </div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="comment">// nullptr by default, but may be set</span></div><div class="line"><a name="l00098"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a3feb5a490cbd9699837067931476c65b"> 98</a></span>  std::shared_ptr<Buffer> <a class="code" href="classarrow_1_1_buffer.html#a3feb5a490cbd9699837067931476c65b">parent_</a>;</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <a class="code" href="macros_8h.html#a40d72e185b1488b5659b761f0b6115bb">ARROW_DISALLOW_COPY_AND_ASSIGN</a>(<a class="code" href="classarrow_1_1_buffer.html">Buffer</a>);</div><div class=" line"><a name="l00102"></a><span class="lineno"> 102</span> };</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="keyword">static</span> <span class="keyword">inline</span> std::shared_ptr<Buffer> GetBufferFromString(<span class="keyword">const</span> std::string& str) {</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">return</span> std::make_shared<Buffer>(<span class="keyword">reinterpret_cast<</span><span class="keyword">const </span>uint8_t*<span class="keyword">></span>(str.c_str()),</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  static_cast<int64_t>(str.size()));</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> }</div><div class="line"><a name="l00114">< /a><span class="lineno"> 114</span> </div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="keyword">static</span> <span class="keyword">inline</span> std::shared_ptr<Buffer> SliceBuffer(<span class="keyword">const</span> std::shared_ptr<Buffer>& buffer,</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keyword">const</span> int64_t offset,</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keyword">const</span> int64_t length) {</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">return</span> std::make_shared<Buffer>(buffer, offset, length);</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span> }</div><div class="line"><a name="l00122"></a ><span class="lineno"> 122</span> </div><div class="line"><a >name="l00125"></a><span class="lineno"> >125</span> ARROW_EXPORT</div><div class="line"><a >name="l00126"></a><span class="lineno"> >126</span> std::shared_ptr<Buffer> <a class="code" >href="namespacearrow.html#a44c8f98a2874248eb7d5658ccee5718e">SliceMutableBuffer</a>(<span > class="keyword">const</span> std::shared_ptr<Buffer>& >buffer,</div><div class="line"><a name="l00127"></a><span class="lineno"> >127</span>  <span >class="keyword">const</span> int64_t offset, <span >class="keyword">const</span> int64_t length);</div><div class="line"><a >name="l00128"></a><span class="lineno"> 128</span> </div><div >class="line"><a name="l00130"></a><span class="lineno"><a class="line" >href="classarrow_1_1_mutable_buffer.html"> 130</a></span> <span >class="keyword">class </span>ARROW_EXPORT <a class="code" >href="classarrow_1_1_mutable_buffer.html">Mutab leBuffer</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_buffer.html">Buffer</a> {</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00132"></a><span class="lineno"><a class="line" href="classarrow_1_1_mutable_buffer.html#a541704eb0b7720aa712e294634cf58f9"> 132</a></span>  <a class="code" href="classarrow_1_1_mutable_buffer.html#a541704eb0b7720aa712e294634cf58f9">MutableBuffer</a>(uint8_t* data, <span class="keyword">const</span> int64_t size) : <a class="code" href="classarrow_1_1_buffer.html">Buffer</a>(data, size) {</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  mutable_data_ = data;</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  is_mutable_ = <span class="keyword">true</span>;</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  }</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span> </div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <a class="code" href="classarrow_1_1_mutable_buffer.html">MutableBuffer</a>(<span class="keyword">const</span> std::shared_ptr<Buffer>& parent, <span class="keyword">const</span> int64_t offset,</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keyword">const</span> int64_t size);</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>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00141"></a><span class="lineno"><a class="line" href="classarrow_1_1_mutable_buffer.html#a3b01c712ad660aea1b10a0ad2b232ac7"> 141</a></span>  <a class="code" href="classarrow_1_1_mutable_buffer.html#a3b01c712ad660aea1b10a0ad2 b232ac7">MutableBuffer</a>() : <a class="code" href="classarrow_1_1_buffer.html">Buffer</a>(nullptr, 0) {}</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> </div><div class="line"><a name="l00144"></a><span class="lineno"><a class="line" href="classarrow_1_1_resizable_buffer.html"> 144</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_resizable_buffer.html">ResizableBuffer</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_mutable_buffer.html">MutableBuffer</a> {</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keyword">virtual</span> <a class="code" href="classarrow_1_1_status.html">Status</a> Resize(<span class="keywo rd">const</span> int64_t new_size, <span class="keywordtype">bool</span> shrink_to_fit = <span class="keyword">true</span>) = 0;</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span> </div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keyword">virtual</span> <a class="code" href="classarrow_1_1_status.html">Status</a> Reserve(<span class="keyword">const</span> int64_t new_capacity) = 0;</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keyword">template</span> <<span class="keyword">class</span> T></div><div class="line"><a name="l00160"></a><span class="lineno"><a class="line" href="classarrow_1_1_resizable_buffer.html#a2dd63263ee81611a4c43a2da9abfb6ae"> 160</a></span>  <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="classarrow_1_ 1_resizable_buffer.html#a2dd63263ee81611a4c43a2da9abfb6ae">TypedResize</a>(<span class="keyword">const</span> int64_t new_nb_elements, <span class="keywordtype">bool</span> shrink_to_fit = <span class="keyword">true</span>) {</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">return</span> Resize(<span class="keyword">sizeof</span>(T) * new_nb_elements, shrink_to_fit);</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  }</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keyword">template</span> <<span class="keyword">class</span> T></div><div class="line"><a name="l00165"></a><span class="lineno"><a class="line" href="classarrow_1_1_resizable_buffer.html#ade214c893245689bc51965c90c4cd739"> 165</a></span>  <a class="code" href="classarrow_1_1_stat us.html">Status</a> <a class="code" href="classarrow_1_1_resizable_buffer.html#ade214c893245689bc51965c90c4cd739">TypedReserve</a>(<span class="keyword">const</span> int64_t new_nb_elements) {</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordflow">return</span> Reserve(<span class="keyword">sizeof</span>(T) * new_nb_elements);</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>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00170"></a><span class="lineno"><a class="line" href="classarrow_1_1_resizable_buffer.html#a57de64a67003a42d06a4dc9d48c60857"> 170</a></span>  <a class="code" href="classarrow_1_1_resizable_buffer.html#a57de64a67003a42d06a4dc9d48c60857">ResizableBuffer</a>(uint8_t* data, int 64_t size) : <a class="code" href="classarrow_1_1_mutable_buffer.html">MutableBuffer</a>(data, size) {}</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span> };</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span> </div><div class="line"><a name="l00174"></a><span class="lineno"><a class="line" href="classarrow_1_1_pool_buffer.html"> 174</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_pool_buffer.html">PoolBuffer</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_resizable_buffer.html">ResizableBuffer</a> {</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keyword">explicit</span> <a class="code" href="classarrow_1_1_pool_buffer.html">PoolBuffer</a>(<a class="code" href="classar row_1_1_memory_pool.html">MemoryPool</a>* pool = <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keyword">virtual</span> ~<a class="code" href="classarrow_1_1_pool_buffer.html">PoolBuffer</a>();</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span> </div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Resize(<span class="keyword">const</span> int64_t new_size, <span class="keywordtype">bool</span> shrink_to_fit = <span class="keyword">true</span>) <span class="keyword">override</span>;</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Reserve(<span class="keyword">const</span> int64_t new_capacity) <span class="keyword">override</span>;</div><div class="line"><a name="l00181"></a>< span class="lineno"> 181</span> </div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <a class="code" href="classarrow_1_1_memory_pool.html">MemoryPool</a>* pool_;</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> </div><div class="line"><a name="l00186"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html"> 186</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_buffer_builder.html">BufferBuilder</a> {</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00188"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_bu ilder.html#ac574703fa5c840f84056200bc553365a"> 188</a></span>  <span class="keyword">explicit</span> <a class="code" href="classarrow_1_1_buffer_builder.html#ac574703fa5c840f84056200bc553365a">BufferBuilder</a>(<a class="code" href="classarrow_1_1_memory_pool.html">MemoryPool</a>* pool)</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  : pool_(pool), data_(nullptr), capacity_(0), size_(0) {}</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span> </div><div class="line"><a name="l00192"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#a8bdd654fab07e1151945e8ba4e6ee39e"> 192</a></span>  <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="classarrow_1_1_buffer_builder.html#a8bdd654fab07e1151945e8ba4e6ee39e">Resize</a>(<span class="keyword">const</span> int64_t elements) {</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</ span>  <span class="comment">// Resize(0) is a no-op</span></div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">if</span> (elements == 0) {</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keywordflow">return</span> <a class="code" href="classarrow_1_1_status.html#a5c0b0031db6eeec3dcc70485d24cfe03">Status::OK</a>();</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  }</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">if</span> (capacity_ == 0) {</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  buffer_ = std::make_shared<PoolBuffer>(pool_);</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>  int64_t old_capacity = capacity_;</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <a class="code" href="status_8h.html#a0a03bcf7fdbd9a96c67afa05fc0a545d">RETURN_NOT_OK</a>(buffer_->Resize(elements));</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  capacity_ = buffer_->capacity();</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  data_ = buffer_->mutable_data();</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordflow">if</span> (capacity_ > old_capacity) {</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  memset(data_ + old_capacity, 0, capacity_ - old_capacity);</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="keywordflow">return</span > <a class="code" > href="classarrow_1_1_status.html#a5c0b0031db6eeec3dcc70485d24cfe03">Status::OK</a>();</div><div > class="line"><a name="l00208"></a><span class="lineno"> 208</span>  > }</div><div class="line"><a name="l00209"></a><span class="lineno"> > 209</span> </div><div class="line"><a name="l00210"></a><span > class="lineno"><a class="line" > href="classarrow_1_1_buffer_builder.html#a861a36589ea59cee1125d3251bfae30c"> > 210</a></span>  <a class="code" > href="classarrow_1_1_status.html">Status</a> <a class="code" > href="classarrow_1_1_buffer_builder.html#a861a36589ea59cee1125d3251bfae30c">Append</a>(<span > class="keyword">const</span> uint8_t* data, int64_t length) {</div><div > class="line"><a name="l00211"></a><span class="lineno"> 211</span>  > <span class="keywordflow">if</span> (capacity_ < length + size_) > {</div><div class="line"><a name="l00212"></a><span class="lineno"> > 212</span>  int64_t new_capacity = BitUtil::NextPower2(length + > size_);</di v><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <a class="code" href="status_8h.html#a0a03bcf7fdbd9a96c67afa05fc0a545d">RETURN_NOT_OK</a>(Resize(new_capacity));</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  }</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  UnsafeAppend(data, length);</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keywordflow">return</span> <a class="code" href="classarrow_1_1_status.html#a5c0b0031db6eeec3dcc70485d24cfe03">Status::OK</a>();</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  }</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span> </div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keyword">template</span> <<span class="keywordtype">size_t</span> NBYTES></div><div class= "line"><a name="l00220"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#a6d1756245bb061a66e69e0e8ffbd4aac"> 220</a></span>  <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="classarrow_1_1_buffer_builder.html#a6d1756245bb061a66e69e0e8ffbd4aac">Append</a>(<span class="keyword">const</span> std::array<uint8_t, NBYTES>& data) {</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  constexpr <span class="keyword">auto</span> nbytes = <span class="keyword">static_cast<</span>int64_t<span class="keyword">></span>(NBYTES);</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordflow">if</span> (capacity_ < nbytes + size_) {</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  int64_t new_capacity = BitUtil::NextPower2(nbytes + size_);</div><div class="line"><a name="l00224"></a><s pan class="lineno"> 224</span>  <a class="code" href="status_8h.html#a0a03bcf7fdbd9a96c67afa05fc0a545d">RETURN_NOT_OK</a>(Resize(new_capacity));</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  }</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span> </div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  std::copy(data.cbegin(), data.cend(), data_ + size_);</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  size_ += nbytes;</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordflow">return</span> <a class="code" href="classarrow_1_1_status.html#a5c0b0031db6eeec3dcc70485d24cfe03">Status::OK</a>();</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  }</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span> </div><div class="line"> <a name="l00232"></a><span class="lineno"> 232</span>  <span class="comment">// Advance pointer and zero out memory</span></div><div class="line"><a name="l00233"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#ab7ba2e8716f69a8bccd68aa33cc12286"> 233</a></span>  <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="classarrow_1_1_buffer_builder.html#ab7ba2e8716f69a8bccd68aa33cc12286">Advance</a>(<span class="keyword">const</span> int64_t length) {</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keywordflow">if</span> (capacity_ < length + size_) {</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  int64_t new_capacity = BitUtil::NextPower2(length + size_);</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <a class="code" href="status_8h.html#a0a03bcf7fdbd9a96c67afa05fc0a545d">R ETURN_NOT_OK</a>(Resize(new_capacity));</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  }</div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  memset(data_ + size_, 0, static_cast<size_t>(length));</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  size_ += length;</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="keywordflow">return</span> <a class="code" href="classarrow_1_1_status.html#a5c0b0031db6eeec3dcc70485d24cfe03">Status::OK</a>();</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  }</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span> </div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="comment">// Unsafe methods don't check existing size</span></div><div class="line"><a name="l00244"></a><span clas s="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#acb2881c13261f9755518d76ed5c4b9b6"> 244</a></span>  <span class="keywordtype">void</span> <a class="code" href="classarrow_1_1_buffer_builder.html#acb2881c13261f9755518d76ed5c4b9b6">UnsafeAppend</a>(<span class="keyword">const</span> uint8_t* data, int64_t length) {</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  memcpy(data_ + size_, data, static_cast<size_t>(length));</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  size_ += length;</div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  }</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span> </div><div class="line"><a name="l00249"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#a3ca4455a595c3b8864feae94044f399e"> 249</a></span>  <a class="code" href="classarrow_1_1_status.html ">Status</a> <a class="code" href="classarrow_1_1_buffer_builder.html#a3ca4455a595c3b8864feae94044f399e">Finish</a>(std::shared_ptr<Buffer>* out) {</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="comment">// Do not shrink to fit to avoid unneeded realloc</span></div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keywordflow">if</span> (size_ > 0) {</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <a class="code" href="status_8h.html#a0a03bcf7fdbd9a96c67afa05fc0a545d">RETURN_NOT_OK</a>(buffer_->Resize(size_, <span class="keyword">false</span>));</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  }</div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  *out = buffer_;</div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  Reset();</div>< div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="keywordflow">return</span> <a class="code" href="classarrow_1_1_status.html#a5c0b0031db6eeec3dcc70485d24cfe03">Status::OK</a>();</div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  }</div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span> </div><div class="line"><a name="l00259"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#ae8d4ba958542c2f74dbab41d1456e6aa"> 259</a></span>  <span class="keywordtype">void</span> <a class="code" href="classarrow_1_1_buffer_builder.html#ae8d4ba958542c2f74dbab41d1456e6aa">Reset</a>() {</div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  buffer_ = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  capacity_ = size_ = 0;</div><div class="line"><a name="l 00262"></a><span class="lineno"> 262</span>  }</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span> </div><div class="line"><a name="l00264"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#a1728b024c99b4255177659c6dcd0b650"> 264</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer_builder.html#a1728b024c99b4255177659c6dcd0b650">capacity</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> capacity_; }</div><div class="line"><a name="l00265"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#a9c3803b7ecb1c2c122a95b2346fbb0a2"> 265</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer_builder.html#a9c3803b7ecb1c2c122a95b2346fbb0a2">length</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> size_; }</div><div class="line"><a name="l00266"></a><span class="lineno"><a class="line" href="classa rrow_1_1_buffer_builder.html#a44d11575460cb39216ae61999a29fa2f"> 266</a></span>  <span class="keyword">const</span> uint8_t* <a class="code" href="classarrow_1_1_buffer_builder.html#a44d11575460cb39216ae61999a29fa2f">data</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> data_; }</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span> </div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00269"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#a17f7b6b8005f1f14be61c5270776158a"> 269</a></span>  std::shared_ptr<PoolBuffer> <a class="code" href="classarrow_1_1_buffer_builder.html#a17f7b6b8005f1f14be61c5270776158a">buffer_</a>;</div><div class="line"><a name="l00270"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#ad4b857975203084d5856758a9 0f669a4"> 270</a></span>  <a class="code" href="classarrow_1_1_memory_pool.html">MemoryPool</a>* <a class="code" href="classarrow_1_1_buffer_builder.html#ad4b857975203084d5856758a90f669a4">pool_</a>;</div><div class="line"><a name="l00271"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#a58dae3a8f530eba77e77d045d86e8396"> 271</a></span>  uint8_t* <a class="code" href="classarrow_1_1_buffer_builder.html#a58dae3a8f530eba77e77d045d86e8396">data_</a>;</div><div class="line"><a name="l00272"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#a91cd1d83d90defa391115f3fbdc03d63"> 272</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer_builder.html#a91cd1d83d90defa391115f3fbdc03d63">capacity_</a>;</div><div class="line"><a name="l00273"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#ae2580f25b0c08e4bf6e0656d365b0bff"> 273</a></span>  int64_t <a class="co de" href="classarrow_1_1_buffer_builder.html#ae2580f25b0c08e4bf6e0656d365b0bff">size_</a>;</div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span> };</div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span> </div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div><div class="line"><a name="l00277"></a><span class="lineno"><a class="line" href="classarrow_1_1_typed_buffer_builder.html"> 277</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_typed_buffer_builder.html">TypedBufferBuilder</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_buffer_builder.html">BufferBuilder</a> {</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00279"></a> <span class="lineno"><a class="line" href="classarrow_1_1_typed_buffer_builder.html#a471e5bdbf33da425e857f07e3833622e"> 279</a></span>  <span class="keyword">explicit</span> <a class="code" href="classarrow_1_1_typed_buffer_builder.html#a471e5bdbf33da425e857f07e3833622e">TypedBufferBuilder</a>(<a class="code" href="classarrow_1_1_memory_pool.html">MemoryPool</a>* pool) : <a class="code" href="classarrow_1_1_buffer_builder.html">BufferBuilder</a>(pool) {}</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span> </div><div class="line"><a name="l00281"></a><span class="lineno"><a class="line" href="classarrow_1_1_typed_buffer_builder.html#a3f077d697ae44153089db2907e8f2ab2"> 281</a></span>  <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="classarrow_1_1_typed_buffer_builder.html#a3f077d697ae44153089db2907e8f2ab2">Append</a>(T arithmetic_value) {</div><div class="line"><a name="l00282"></a><span class="lineno"> 2 82</span>  static_assert(std::is_arithmetic<T>::value,</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="stringliteral">"Convenience buffer append only supports arithmetic types"</span>);</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="keywordflow">return</span> <a class="code" href="classarrow_1_1_buffer_builder.html#a861a36589ea59cee1125d3251bfae30c">BufferBuilder::Append</a>(reinterpret_cast<uint8_t*>(&arithmetic_value),</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keyword">sizeof</span>(T));</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  }</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span> </div><div class="line"><a name="l00288"></a><span class="lineno"><a class="line" href="clas sarrow_1_1_typed_buffer_builder.html#a0dee0463148d313243336cac5ab8427e"> 288</a></span>  <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="classarrow_1_1_typed_buffer_builder.html#a0dee0463148d313243336cac5ab8427e">Append</a>(<span class="keyword">const</span> T* arithmetic_values, int64_t num_elements) {</div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  static_assert(std::is_arithmetic<T>::value,</div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="stringliteral">"Convenience buffer append only supports arithmetic types"</span>);</div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  <span class="keywordflow">return</span> <a class="code" href="classarrow_1_1_buffer_builder.html#a861a36589ea59cee1125d3251bfae30c">BufferBuilder::Append</a>(reinterpret_cast<const uint8_t*>(arithmetic_values),</d iv><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  num_elements * <span class="keyword">sizeof</span>(T));</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  }</div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span> </div><div class="line"><a name="l00295"></a><span class="lineno"><a class="line" href="classarrow_1_1_typed_buffer_builder.html#a8eae2200ae9aa357f838ce84a81abbf5"> 295</a></span>  <span class="keywordtype">void</span> <a class="code" href="classarrow_1_1_typed_buffer_builder.html#a8eae2200ae9aa357f838ce84a81abbf5">UnsafeAppend</a>(T arithmetic_value) {</div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  static_assert(std::is_arithmetic<T>::value,</div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="stringliteral">"Convenience buffer app end only supports arithmetic types"</span>);</div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <a class="code" href="classarrow_1_1_buffer_builder.html#acb2881c13261f9755518d76ed5c4b9b6">BufferBuilder::UnsafeAppend</a>(reinterpret_cast<uint8_t*>(&arithmetic_value), <span class="keyword">sizeof</span>(T));</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  }</div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span> </div><div class="line"><a name="l00301"></a><span class="lineno"><a class="line" href="classarrow_1_1_typed_buffer_builder.html#aa5c75cc2d299ca15f57cec9d16ddbb9b"> 301</a></span>  <span class="keywordtype">void</span> <a class="code" href="classarrow_1_1_typed_buffer_builder.html#aa5c75cc2d299ca15f57cec9d16ddbb9b">UnsafeAppend</a>(<span class="keyword">const</span> T* arithmetic_values, int64_t num_elements) {</div><div class="line"><a name="l00302"></a><s pan class="lineno"> 302</span>  static_assert(std::is_arithmetic<T>::value,</div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  <span class="stringliteral">"Convenience buffer append only supports arithmetic types"</span>);</div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <a class="code" href="classarrow_1_1_buffer_builder.html#acb2881c13261f9755518d76ed5c4b9b6">BufferBuilder::UnsafeAppend</a>(reinterpret_cast<const uint8_t*>(arithmetic_values),</div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  num_elements * <span class="keyword">sizeof</span>(T));</div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  }</div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span> </div><div class="line"><a name="l00308"></a><span class="lineno"><a class="line" href=" classarrow_1_1_typed_buffer_builder.html#aaed11cafb3f536a491514a70958c87db"> 308</a></span>  <span class="keyword">const</span> T* <a class="code" href="classarrow_1_1_typed_buffer_builder.html#aaed11cafb3f536a491514a70958c87db">data</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span>T*<span class="keyword">></span>(data_); }</div><div class="line"><a name="l00309"></a><span class="lineno"><a class="line" href="classarrow_1_1_typed_buffer_builder.html#a1f49bc2502db1d20acb2dae6280a8837"> 309</a></span>  int64_t <a class="code" href="classarrow_1_1_typed_buffer_builder.html#a1f49bc2502db1d20acb2dae6280a8837">length</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> size_ / <span class="keyword">sizeof</span>(T); }</div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span> };</div><div class="line">< a name="l00311"></a><span class="lineno"> 311</span> </div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span> ARROW_EXPORT</div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span> <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="namespacearrow.html#aff11ee23eb038410107ea5246f2fb330">AllocateBuffer</a>(<a class="code" href="classarrow_1_1_memory_pool.html">MemoryPool</a>* pool, <span class="keyword">const</span> int64_t size, std::shared_ptr<Buffer>* out);</div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span> </div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span> ARROW_EXPORT</div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span> <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="namespacearrow.html#a9c3ce000978a518fad942be4a54e9870">AllocateResizableBuffer</a>(<a class= "code" href="classarrow_1_1_memory_pool.html">MemoryPool</a>* pool, <span class="keyword">const</span> int64_t size,</div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  std::shared_ptr<ResizableBuffer>* out);</div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span> </div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span> <span class="preprocessor">#ifndef ARROW_NO_DEPRECATED_API</span></div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span> ARROW_EXPORT</div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span> <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="namespacearrow.html#aff11ee23eb038410107ea5246f2fb330">AllocateBuffer</a>(<a class="code" href="classarrow_1_1_memory_pool.html">MemoryPool</a>* pool, <span class="keyword">const</span> int64_t size,</div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  std::shared_ptr<MutableBuffer>* out);</div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span> </div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span> } <span class="comment">// namespace arrow</span></div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span> </div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span> <span class="preprocessor">#endif // ARROW_BUFFER_H</span></div><div class="ttc" id="classarrow_1_1_mutable_buffer_html_a3b01c712ad660aea1b10a0ad2b232ac7"><div class="ttname"><a href="classarrow_1_1_mutable_buffer.html#a3b01c712ad660aea1b10a0ad2b232ac7">arrow::MutableBuffer::MutableBuffer</a></div><div class="ttdeci">MutableBuffer()</div><div class="ttdef"><b>D efinition:</b> buffer.h:141</div></div> -<div class="ttc" id="classarrow_1_1_buffer_html_ac58d818fa0d8a5db215ca858c5e6aece"><div class="ttname"><a href="classarrow_1_1_buffer.html#ac58d818fa0d8a5db215ca858c5e6aece">arrow::Buffer::parent</a></div><div class="ttdeci">std::shared_ptr< Buffer > parent() const</div><div class="ttdef"><b>Definition:</b> buffer.h:88</div></div> -<div class="ttc" id="classarrow_1_1_buffer_builder_html_acb2881c13261f9755518d76ed5c4b9b6"><div class="ttname"><a href="classarrow_1_1_buffer_builder.html#acb2881c13261f9755518d76ed5c4b9b6">arrow::BufferBuilder::UnsafeAppend</a></div><div class="ttdeci">void UnsafeAppend(const uint8_t *data, int64_t length)</div><div class="ttdef"><b>Definition:</b> buffer.h:244</div></div> -<div class="ttc" id="classarrow_1_1_mutable_buffer_html"><div class="ttname"><a href="classarrow_1_1_mutable_buffer.html">arrow::MutableBuffer</a></div><div class="ttdoc">A Buffer whose contents can be mutated. May or may not own its data. </div><div class="ttdef"><b>Definition:</b> buffer.h:130</div></div> -<div class="ttc" id="classarrow_1_1_buffer_html_a45ee7f1e21f9f3f4cb8233be8d64731e"><div class="ttname"><a href="classarrow_1_1_buffer.html#a45ee7f1e21f9f3f4cb8233be8d64731e">arrow::Buffer::capacity_</a></div><div class="ttdeci">int64_t capacity_</div><div class="ttdef"><b>Definition:</b> buffer.h:95</div></div> -<div class="ttc" id="classarrow_1_1_buffer_builder_html_a6d1756245bb061a66e69e0e8ffbd4aac"><div class="ttname"><a href="classarrow_1_1_buffer_builder.html#a6d1756245bb061a66e69e0e8ffbd4aac">arrow::BufferBuilder::Append</a></div><div class="ttdeci">Status Append(const std::array< uint8_t, NBYTES > &data)</div><div class="ttdef"><b>Definition:</b> buffer.h:220</div></div> -<div class="ttc" id="classarrow_1_1_buffer_builder_html_ae8d4ba958542c2f74dbab41d1456e6aa"><div class="ttname"><a href="classarrow_1_1_buffer_builder.html#ae8d4ba958542c2f74dbab41d1456e6aa">arrow::BufferBuilder::Reset</a></div><div class="ttdeci">void Reset()</div><div class="ttdef"><b>Definition:</b> buffer.h:259</div></div> -<div class="ttc" id="classarrow_1_1_buffer_html_acfefa777b4d7d6a2f7a8ea23549dac46"><div class="ttname"><a href="classarrow_1_1_buffer.html#acfefa777b4d7d6a2f7a8ea23549dac46">arrow::Buffer::is_mutable_</a></div><div class="ttdeci">bool is_mutable_</div><div class="ttdef"><b>Definition:</b> buffer.h:91</div></div> -<div class="ttc" id="classarrow_1_1_pool_buffer_html"><div class="ttname"><a href="classarrow_1_1_pool_buffer.html">arrow::PoolBuffer</a></div><div class="ttdoc">A Buffer whose lifetime is tied to a particular MemoryPool. </div><div class="ttdef"><b>Definition:</b> buffer.h:174</div></div> -<div class="ttc" id="classarrow_1_1_resizable_buffer_html_a57de64a67003a42d06a4dc9d48c60857"><div class="ttname"><a href="classarrow_1_1_resizable_buffer.html#a57de64a67003a42d06a4dc9d48c60857">arrow::ResizableBuffer::ResizableBuffer</a></div><div class="ttdeci">ResizableBuffer(uint8_t *data, int64_t size)</div><div class="ttdef"><b>Definition:</b> buffer.h:170</div></div> -<div class="ttc" id="classarrow_1_1_typed_buffer_builder_html_a471e5bdbf33da425e857f07e3833622e"><div class="ttname"><a href="classarrow_1_1_typed_buffer_builder.html#a471e5bdbf33da425e857f07e3833622e">arrow::TypedBufferBuilder::TypedBufferBuilder</a></div><div class="ttdeci">TypedBufferBuilder(MemoryPool *pool)</div><div class="ttdef"><b>Definition:</b> buffer.h:279</div></div> -<div class="ttc" id="classarrow_1_1_buffer_html_a4c75902129b5f2fb471fd166907361dc"><div class="ttname"><a href="classarrow_1_1_buffer.html#a4c75902129b5f2fb471fd166907361dc">arrow::Buffer::capacity</a></div><div class="ttdeci">int64_t capacity() const</div><div class="ttdef"><b>Definition:</b> buffer.h:82</div></div> +<a href="buffer_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Licensed to the Apache Software Foundation (ASF) under one</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// or more contributor license agreements. See the NOTICE file</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// distributed with this work for additional information</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// regarding copyright ownership. The ASF licenses this file</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// to you under the Apache License, Version 2.0 (the</span></div><div class="line"><a name="l00006"></a><span class= "lineno"> 6</span> <span class="comment">// "License"); you may not use this file except in compliance</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// with the License. You may obtain a copy of the License at</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">//</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">//</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// Unless required by applicable law or agreed to in writing,</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// software distributed un der the License is distributed on an</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// KIND, either express or implied. See the License for the</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">// specific language governing permissions and limitations</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">// under the License.</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#ifndef ARROW_BUFFER_H</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19< /span> <span class="preprocessor">#define ARROW_BUFFER_H</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <algorithm></span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <cstdint></span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <cstring></span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <memory></span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <string></span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <type_traits ></span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include "<a class="code" href="status_8h.html">arrow/status.h</a>"</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include "<a class="code" href="bit-util_8h.html">arrow/util/bit-util.h</a>"</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include "<a class="code" href="macros_8h.html">arrow/util/macros.h</a>"</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "<a class="code" href="visibility_8h.html">arrow/util/visibility.h</a>"</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">namespace </span><a class="code" href="namespacearrow.html">arrow</a> {</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">class </span>MemoryPool;</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">// ----------------------------------------------------------------------</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment">// Buffer classes</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div><div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html"> 48</a></span>& #160;<span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_buffer.html">Buffer</a> {</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00056"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a801078c559b0c351f1ca5a6b6a04488f"> 56</a></span>  <a class="code" href="classarrow_1_1_buffer.html#a801078c559b0c351f1ca5a6b6a04488f">Buffer</a>(<span class="keyword">const</span> uint8_t* data, int64_t size)</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  : is_mutable_(false), data_(data), size_(size), capacity_(size) {}</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div><div class="line"><a name="l00065"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a5dfd60984e0ac8474f20dbd49f628e54"> 65</a></span>  <span class="ke yword">explicit</span> <a class="code" href="classarrow_1_1_buffer.html#a5dfd60984e0ac8474f20dbd49f628e54">Buffer</a>(<span class="keyword">const</span> std::string& data)</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  : <a class="code" href="classarrow_1_1_buffer.html">Buffer</a>(reinterpret_cast<const uint8_t*>(data.c_str()),</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  static_cast<int64_t>(data.size())) {}</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>  <span class="keyword">virtual</span> ~<a class="code" href="classarrow_1_1_buffer.html">Buffer</a>() = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div><div class="line"><a name="l00078"></a><span class="lineno"><a class=" line" href="classarrow_1_1_buffer.html#af694696afedb9313cf5dc874ffa9a453"> 78</a></span>  <a class="code" href="classarrow_1_1_buffer.html#af694696afedb9313cf5dc874ffa9a453">Buffer</a>(<span class="keyword">const</span> std::shared_ptr<Buffer>& parent, <span class="keyword">const</span> int64_t offset, <span class="keyword">const</span> int64_t size)</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  : <a class="code" href="classarrow_1_1_buffer.html">Buffer</a>(parent->data() + offset, size) {</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  parent_ = parent;</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> </div><div class="line"><a name="l00083"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a8244f9c354364788161f11bedc6f2ab9"> 83</a></sp an>  <span class="keywordtype">bool</span> <a class="code" href="classarrow_1_1_buffer.html#a8244f9c354364788161f11bedc6f2ab9">is_mutable</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> is_mutable_; }</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordtype">bool</span> Equals(<span class="keyword">const</span> <a class="code" href="classarrow_1_1_buffer.html">Buffer</a>& other, int64_t nbytes) <span class="keyword">const</span>;</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordtype">bool</span> Equals(<span class="keyword">const</span> <a class="code" href="classarrow_1_1_buffer.html">Buffer</a>& other) <span class="keyword">const</span>;</div><div class="line"> <a name="l00091"></a><span class="lineno"> 91</span> </div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Copy(<span class="keyword">const</span> int64_t start, <span class="keyword">const</span> int64_t nbytes, <a class="code" href="classarrow_1_1_memory_pool.html">MemoryPool</a>* pool,</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  std::shared_ptr<Buffer>* out) <span class="keyword">const</span>;</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Copy(<span class="keyword">const</span> int64_t start, <span class="keyword">const</span> int64_t nbytes,</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  std:: shared_ptr<Buffer>* out) <span class="keyword">const</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="classarrow_1_1_buffer.html#a4c75902129b5f2fb471fd166907361dc"> 100</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer.html#a4c75902129b5f2fb471fd166907361dc">capacity</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> capacity_; }</div><div class="line"><a name="l00101"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a81c3dd8c11dd804be2ada6df5ce8fad2"> 101</a></span>  <span class="keyword">const</span> uint8_t* <a class="code" href="classarrow_1_1_buffer.html#a81c3dd8c11dd804be2ada6df5ce8fad2">data</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> data_; }</div><div class="line"><a name="l00102"></a><span class="lineno"><a class="lin e" href="classarrow_1_1_buffer.html#a5a9cb9324d3f7e323eb070b553c925aa"> 102</a></span>  uint8_t* <a class="code" href="classarrow_1_1_buffer.html#a5a9cb9324d3f7e323eb070b553c925aa">mutable_data</a>() { <span class="keywordflow">return</span> mutable_data_; }</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div><div class="line"><a name="l00104"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a2a49871341c300996a39145d22aa8054"> 104</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer.html#a2a49871341c300996a39145d22aa8054">size</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> size_; }</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div><div class="line"><a name="l00106"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#ac58d818fa0d8a5db215ca858c5e6aece"> 106</a></span>  std::shared_ptr<Buffer> ; <a class="code" href="classarrow_1_1_buffer.html#ac58d818fa0d8a5db215ca858c5e6aece">parent</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> parent_; }</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00109"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#acfefa777b4d7d6a2f7a8ea23549dac46"> 109</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classarrow_1_1_buffer.html#acfefa777b4d7d6a2f7a8ea23549dac46">is_mutable_</a>;</div><div class="line"><a name="l00110"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#af468a7a1f346f9a6a29738bf585a3548"> 110</a></span>  <span class="keyword">const</span> uint8_t* <a class="code" href="classarrow_1_1_buffer.html#af468a7a1f346f9a6a29738b f585a3548">data_</a>;</div><div class="line"><a name="l00111"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#ad36e306b99bc8427865bcac9b2d4f7e5"> 111</a></span>  uint8_t* <a class="code" href="classarrow_1_1_buffer.html#ad36e306b99bc8427865bcac9b2d4f7e5">mutable_data_</a>;</div><div class="line"><a name="l00112"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a3500e42217635843b3b34bfe92b2f73a"> 112</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer.html#a3500e42217635843b3b34bfe92b2f73a">size_</a>;</div><div class="line"><a name="l00113"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a45ee7f1e21f9f3f4cb8233be8d64731e"> 113</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer.html#a45ee7f1e21f9f3f4cb8233be8d64731e">capacity_</a>;</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="comment">// nullptr by default, but may be set</span></div><div class="line"><a name="l00116"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a3feb5a490cbd9699837067931476c65b"> 116</a></span>  std::shared_ptr<Buffer> <a class="code" href="classarrow_1_1_buffer.html#a3feb5a490cbd9699837067931476c65b">parent_</a>;</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>  <a class="code" href="macros_8h.html#a40d72e185b1488b5659b761f0b6115bb">ARROW_DISALLOW_COPY_AND_ASSIGN</a>(<a class="code" href="classarrow_1_1_buffer.html">Buffer</a>);</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span> };</div><div class="line"><a name="l00121"></a><spa n class="lineno"> 121</span> </div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="keyword">static</span> <span class="keyword">inline</span> std::shared_ptr<Buffer> SliceBuffer(<span class="keyword">const</span> std::shared_ptr<Buffer>& buffer,</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keyword">const</span> int64_t offset,</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keyword">const</span> int64_t length) {</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">return</span> std::make_shared<Buffer>(buffer, offset, length);</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> }</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span> ARROW_EXPORT</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span> std::shared_ptr<Buffer> <a class="code" href="namespacearrow.html#a44c8f98a2874248eb7d5658ccee5718e">SliceMutableBuffer</a>(<span class="keyword">const</span> std::shared_ptr<Buffer>& buffer,</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keyword">const</span> int64_t offset, <span class="keyword">const</span> int64_t length);</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div><div class="line"><a name="l00137"></a><span class="lineno"><a class="line" href="classarrow_1_1_mutable_buffer.html"> 137</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_mutable_buffer.html">MutableBuffe r</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_buffer.html">Buffer</a> {</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00139"></a><span class="lineno"><a class="line" href="classarrow_1_1_mutable_buffer.html#a541704eb0b7720aa712e294634cf58f9"> 139</a></span>  <a class="code" href="classarrow_1_1_mutable_buffer.html#a541704eb0b7720aa712e294634cf58f9">MutableBuffer</a>(uint8_t* data, <span class="keyword">const</span> int64_t size) : <a class="code" href="classarrow_1_1_buffer.html">Buffer</a>(data, size) {</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  mutable_data_ = data;</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  is_mutable_ = <span class="keyword">true</span>;</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> </div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <a class="code" href="classarrow_1_1_mutable_buffer.html">MutableBuffer</a>(<span class="keyword">const</span> std::shared_ptr<Buffer>& parent, <span class="keyword">const</span> int64_t offset,</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keyword">const</span> int64_t size);</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> </div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00148"></a><span class="lineno"><a class="line" href="classarrow_1_1_mutable_buffer.html#a3b01c712ad660aea1b10a0ad2b232ac7"> 148</a></span>  <a class="code" href="classarrow_1_1_mutable_buffer.html#a3b01c712ad660aea1b10a0ad2b232ac7 ">MutableBuffer</a>() : <a class="code" href="classarrow_1_1_buffer.html">Buffer</a>(nullptr, 0) {}</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</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"><a class="line" href="classarrow_1_1_resizable_buffer.html"> 151</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_resizable_buffer.html">ResizableBuffer</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_mutable_buffer.html">MutableBuffer</a> {</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keyword">virtual</span> <a class="code" href="classarrow_1_1_status.html">Status</a> Resize(<span class="keyword">con st</span> int64_t new_size, <span class="keywordtype">bool</span> shrink_to_fit = <span class="keyword">true</span>) = 0;</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span> </div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keyword">virtual</span> <a class="code" href="classarrow_1_1_status.html">Status</a> Reserve(<span class="keyword">const</span> int64_t new_capacity) = 0;</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keyword">template</span> <<span class="keyword">class</span> T></div><div class="line"><a name="l00167"></a><span class="lineno"><a class="line" href="classarrow_1_1_resizable_buffer.html#a2dd63263ee81611a4c43a2da9abfb6ae"> 167</a></span>  <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="classarrow_1_1_resiz able_buffer.html#a2dd63263ee81611a4c43a2da9abfb6ae">TypedResize</a>(<span class="keyword">const</span> int64_t new_nb_elements, <span class="keywordtype">bool</span> shrink_to_fit = <span class="keyword">true</span>) {</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keywordflow">return</span> Resize(<span class="keyword">sizeof</span>(T) * new_nb_elements, shrink_to_fit);</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  }</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span> </div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keyword">template</span> <<span class="keyword">class</span> T></div><div class="line"><a name="l00172"></a><span class="lineno"><a class="line" href="classarrow_1_1_resizable_buffer.html#ade214c893245689bc51965c90c4cd739"> 172</a></span>  <a class="code" href="classarrow_1_1_status.html ">Status</a> <a class="code" href="classarrow_1_1_resizable_buffer.html#ade214c893245689bc51965c90c4cd739">TypedReserve</a>(<span class="keyword">const</span> int64_t new_nb_elements) {</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keywordflow">return</span> Reserve(<span class="keyword">sizeof</span>(T) * new_nb_elements);</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  }</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span> </div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00177"></a><span class="lineno"><a class="line" href="classarrow_1_1_resizable_buffer.html#a57de64a67003a42d06a4dc9d48c60857"> 177</a></span>  <a class="code" href="classarrow_1_1_resizable_buffer.html#a57de64a67003a42d06a4dc9d48c60857">ResizableBuffer</a>(uint8_t* data, int64_t si ze) : <a class="code" href="classarrow_1_1_mutable_buffer.html">MutableBuffer</a>(data, size) {}</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span> };</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span> </div><div class="line"><a name="l00181"></a><span class="lineno"><a class="line" href="classarrow_1_1_pool_buffer.html"> 181</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_pool_buffer.html">PoolBuffer</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_resizable_buffer.html">ResizableBuffer</a> {</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keyword">explicit</span> <a class="code" href="classarrow_1_1_pool_buffer.html">PoolBuffer</a>(<a class="code" href="classarrow_1_1 _memory_pool.html">MemoryPool</a>* pool = <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keyword">virtual</span> ~<a class="code" href="classarrow_1_1_pool_buffer.html">PoolBuffer</a>();</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span> </div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Resize(<span class="keyword">const</span> int64_t new_size, <span class="keywordtype">bool</span> shrink_to_fit = <span class="keyword">true</span>) <span class="keyword">override</span>;</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Reserve(<span class="keyword">const</span> int64_t new_capacity) <span class="keyword">override</span>;</div><div class="line"><a name="l00188"></a><span cl ass="lineno"> 188</span> </div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <a class="code" href="classarrow_1_1_memory_pool.html">MemoryPool</a>* pool_;</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> </div><div class="line"><a name="l00193"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html"> 193</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_buffer_builder.html">BufferBuilder</a> {</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00195"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.h tml#ac574703fa5c840f84056200bc553365a"> 195</a></span>  <span class="keyword">explicit</span> <a class="code" href="classarrow_1_1_buffer_builder.html#ac574703fa5c840f84056200bc553365a">BufferBuilder</a>(<a class="code" href="classarrow_1_1_memory_pool.html">MemoryPool</a>* pool)</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  : pool_(pool), data_(nullptr), capacity_(0), size_(0) {}</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div><div class="line"><a name="l00199"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#a8bdd654fab07e1151945e8ba4e6ee39e"> 199</a></span>  <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="classarrow_1_1_buffer_builder.html#a8bdd654fab07e1151945e8ba4e6ee39e">Resize</a>(<span class="keyword">const</span> int64_t elements) {</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&# 160; <span class="comment">// Resize(0) is a no-op</span></div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keywordflow">if</span> (elements == 0) {</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keywordflow">return</span> <a class="code" href="classarrow_1_1_status.html#a5c0b0031db6eeec3dcc70485d24cfe03">Status::OK</a>();</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  }</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordflow">if</span> (buffer_ == <span class="keyword">nullptr</span>) {</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  buffer_ = std::make_shared<PoolBuffer>(pool_);</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  }</div><div class="line"><a name="l00207"></a><span class="lineno"> 20 7</span>  int64_t old_capacity = capacity_;</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <a class="code" href="status_8h.html#a0a03bcf7fdbd9a96c67afa05fc0a545d">RETURN_NOT_OK</a>(buffer_->Resize(elements));</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  capacity_ = buffer_->capacity();</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  data_ = buffer_->mutable_data();</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">if</span> (capacity_ > old_capacity) {</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  memset(data_ + old_capacity, 0, capacity_ - old_capacity);</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  }</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class= "keywordflow">return</span> <a class="code" href="classarrow_1_1_status.html#a5c0b0031db6eeec3dcc70485d24cfe03">Status::OK</a>();</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  }</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span> </div><div class="line"><a name="l00217"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#a861a36589ea59cee1125d3251bfae30c"> 217</a></span>  <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="classarrow_1_1_buffer_builder.html#a861a36589ea59cee1125d3251bfae30c">Append</a>(<span class="keyword">const</span> uint8_t* data, int64_t length) {</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordflow">if</span> (capacity_ < length + size_) {</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  int64_t new_capacity = BitUtil::NextP ower2(length + size_);</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <a class="code" href="status_8h.html#a0a03bcf7fdbd9a96c67afa05fc0a545d">RETURN_NOT_OK</a>(Resize(new_capacity));</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  }</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  UnsafeAppend(data, length);</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordflow">return</span> <a class="code" href="classarrow_1_1_status.html#a5c0b0031db6eeec3dcc70485d24cfe03">Status::OK</a>();</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  }</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span> </div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywo
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