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Posted to commits@arrow.apache.org by we...@apache.org on 2017/07/31 19:29:57 UTC
[39/51] [partial] arrow-site git commit: Update C++ API docs to 0.5.0
http://git-wip-us.apache.org/repos/asf/arrow-site/blob/b286da84/docs/cpp/buffer_8h_source.html
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diff --git a/docs/cpp/buffer_8h_source.html b/docs/cpp/buffer_8h_source.html
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@@ -3,17 +3,15 @@
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+<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>
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@@ -91,61 +67,72 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
<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> </div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include "<a class="code" href="status_8h.html">arrow/status.h</a>"</sp
an></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include "<a class="code" href="macros_8h.html">arrow/util/macros.h</a>"</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include "<a class="code" href="visibility_8h.html">arrow/util/visibility.h</a>"</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">namespace </span><a class="code" href="namespacearrow.html">arrow</a> {</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="keyword">class </span>MemoryPool;</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">class
</span>Status;</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="comment">// ----------------------------------------------------------------------</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">// Buffer classes</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div><div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html"> 46</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_buffer.html">Buffer</a> {</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00048"></a><spa
n class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a801078c559b0c351f1ca5a6b6a04488f"> 48</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="l00049"></a><span class="lineno"> 49</span>  : is_mutable_(false), data_(data), size_(size), capacity_(size) {}</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">virtual</span> ~<a class="code" href="classarrow_1_1_buffer.html">Buffer</a>();</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div><div class="line"><a name="l00059"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#af4fd71c2df93484b86a3ab1924193b05"> 59</a></span>  <a class="code" href="classarrow_1_1_buffer.html#af4fd71c2df93484b86a3ab1924193b05">Buffer</a>(<span class="keywo
rd">const</span> std::shared_ptr<Buffer>& parent, int64_t offset, int64_t size)</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  : <a class="code" href="classarrow_1_1_buffer.html">Buffer</a>(parent->data() + offset, size) {</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  parent_ = parent;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  }</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div><div class="line"><a name="l00064"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a15aa192631fbdad93a1939d3a0b193c7"> 64</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classarrow_1_1_buffer.html#a15aa192631fbdad93a1939d3a0b193c7">is_mutable</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> is_mutable_; }</div><div class="line"><a name="l00065"
></a><span class="lineno"> 65</span> </div><div class="line"><a name="l00068"></a><span class="lineno"> 68</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="l00069"></a><span class="lineno"> 69</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="l00070"></a><span class="lineno"> 70</span> </div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Copy(int64_t start, int64_t nbytes, <a class="code" href="classarrow_1_1_memory_pool.html">MemoryPool</a>* pool,</div><div class="line"><a name="l00073"></a><
span class="lineno"> 73</span>  std::shared_ptr<Buffer>* out) <span class="keyword">const</span>;</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Copy(int64_t start, int64_t nbytes, 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="l00078"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#aa31506ee38b2ae2a4d71f48a285d745d"> 78</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer.html#aa31506ee38b2ae2a4d71f48a285d745d">capacity</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> capacity_; }</div><div class="line"><a name="l00079"></a><span class="lineno"><a class="line" href="cl
assarrow_1_1_buffer.html#a17211fa086c7f2bb6495295ddb593ad5"> 79</a></span>  <span class="keyword">const</span> uint8_t* <a class="code" href="classarrow_1_1_buffer.html#a17211fa086c7f2bb6495295ddb593ad5">data</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> data_; }</div><div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a5a9cb9324d3f7e323eb070b553c925aa"> 80</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="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#a5620fd061758d0467d06b0edb783df73"> 82</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer.html#a5620fd061758d0467d06b0edb783d
f73">size</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> size_; }</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div><div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a8c4faa36b9e310c99346425575014bde"> 84</a></span>  std::shared_ptr<Buffer> <a class="code" href="classarrow_1_1_buffer.html#a8c4faa36b9e310c99346425575014bde">parent</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> parent_; }</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00087"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#acfefa777b4d7d6a2f7a8ea23549dac46"> 87</a></span>  <span class="keywordtype">bool</span> <a c
lass="code" href="classarrow_1_1_buffer.html#acfefa777b4d7d6a2f7a8ea23549dac46">is_mutable_</a>;</div><div class="line"><a name="l00088"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#af468a7a1f346f9a6a29738bf585a3548"> 88</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="l00089"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#ad36e306b99bc8427865bcac9b2d4f7e5"> 89</a></span>  uint8_t* <a class="code" href="classarrow_1_1_buffer.html#ad36e306b99bc8427865bcac9b2d4f7e5">mutable_data_</a>;</div><div class="line"><a name="l00090"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a3500e42217635843b3b34bfe92b2f73a"> 90</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer.html#a3500e42217635843b3b34bfe92b2f73a">size_</a>;</div><div class="line"><a n
ame="l00091"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a45ee7f1e21f9f3f4cb8233be8d64731e"> 91</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer.html#a45ee7f1e21f9f3f4cb8233be8d64731e">capacity_</a>;</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// nullptr by default, but may be set</span></div><div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a3feb5a490cbd9699837067931476c65b"> 94</a></span>  std::shared_ptr<Buffer> <a class="code" href="classarrow_1_1_buffer.html#a3feb5a490cbd9699837067931476c65b">parent_</a>;</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keyword">private</span>:</d
iv><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <a class="code" href="macros_8h.html#af8df3547bfde53a5acb93e2607b0034a">DISALLOW_COPY_AND_ASSIGN</a>(<a class="code" href="classarrow_1_1_buffer.html">Buffer</a>);</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="l00102"></a><span class="lineno"> 102</span> <span class="keyword">static</span> <span class="keyword">inline</span> std::shared_ptr<Buffer> SliceBuffer(</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keyword">const</span> std::shared_ptr<Buffer>& buffer, int64_t offset, int64_t length) {</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">return</span> std::make_shared<Buffer>(buffer, offset, length);</d
iv><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> }</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span> std::shared_ptr<Buffer> <a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="namespacearrow.html#a21c0a6e906a9b23fcd7a823c7a46d6b4">SliceMutableBuffer</a>(</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keyword">const</span> std::shared_ptr<Buffer>& buffer, int64_t offset, int64_t length);</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div><div class="line"><a name="l00113"></a><span class="lineno"><a class="line" href="classarrow_1_1_mutable_buffer.html"> 113</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77
a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_mutable_buffer.html">MutableBuffer</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_buffer.html">Buffer</a> {</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00115"></a><span class="lineno"><a class="line" href="classarrow_1_1_mutable_buffer.html#ae5484cdf9af52f3740bf4b5f1888b38f"> 115</a></span>  <a class="code" href="classarrow_1_1_mutable_buffer.html#ae5484cdf9af52f3740bf4b5f1888b38f">MutableBuffer</a>(uint8_t* data, int64_t size) : <a class="code" href="classarrow_1_1_buffer.html">Buffer</a>(data, size) {</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  mutable_data_ = data;</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  is_mutable_ = <span class="keyword">true</span>;</div><div class="line"><a
name="l00118"></a><span class="lineno"> 118</span>  }</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span> </div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <a class="code" href="classarrow_1_1_mutable_buffer.html">MutableBuffer</a>(<span class="keyword">const</span> std::shared_ptr<Buffer>& parent, int64_t offset, int64_t size);</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>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00123"></a><span class="lineno"><a class="line" href="classarrow_1_1_mutable_buffer.html#a3b01c712ad660aea1b10a0ad2b232ac7"> 123</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) {}</d
iv><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> };</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div><div class="line"><a name="l00126"></a><span class="lineno"><a class="line" href="classarrow_1_1_resizable_buffer.html"> 126</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <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="l00127"></a><span class="lineno"> 127</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keyword">virtual</span> <a class="code" href="classarrow_1_1_status.html">Status</a> Resize(int64_t new_size, <span class="keywordtype">boo
l</span> shrink_to_fit = <span class="keyword">true</span>) = 0;</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keyword">virtual</span> <a class="code" href="classarrow_1_1_status.html">Status</a> Reserve(int64_t new_capacity) = 0;</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keyword">template</span> <<span class="keyword">class</span> T></div><div class="line"><a name="l00142"></a><span class="lineno"><a class="line" href="classarrow_1_1_resizable_buffer.html#a1112c5344bc770e927eef31d4c0187b2"> 142</a></span>  <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="classarrow_1_1_resizable_buffer.html#a1112c5344bc770e927eef31d4c0187b2">TypedResize</a>(int64_t new_nb_elements,
<span class="keywordtype">bool</span> shrink_to_fit = <span class="keyword">true</span>) {</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</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="l00144"></a><span class="lineno"> 144</span>  }</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keyword">template</span> <<span class="keyword">class</span> T></div><div class="line"><a name="l00147"></a><span class="lineno"><a class="line" href="classarrow_1_1_resizable_buffer.html#af38b01cff76a88738fce6bc19cdc84d6"> 147</a></span>  <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="classarrow_1_1_resizable_buffer.html#af38b01cff76a88738fce6bc19cdc84d6">TypedReserve</a>(int
64_t new_nb_elements) {</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">return</span> Reserve(<span class="keyword">sizeof</span>(T) * new_nb_elements);</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"> 151</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00152"></a><span class="lineno"><a class="line" href="classarrow_1_1_resizable_buffer.html#a57de64a67003a42d06a4dc9d48c60857"> 152</a></span>  <a class="code" href="classarrow_1_1_resizable_buffer.html#a57de64a67003a42d06a4dc9d48c60857">ResizableBuffer</a>(uint8_t* data, int64_t size) : <a class="code" href="classarrow_1_1_mutable_buffer.html">MutableBuffer</a>(data, size) {}</div><div class="line"><a name="l00153"></a><span class="lineno">
153</span> };</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div><div class="line"><a name="l00156"></a><span class="lineno"><a class="line" href="classarrow_1_1_pool_buffer.html"> 156</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <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="l00157"></a><span class="lineno"> 157</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</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="l00159"></a><span class="lineno"> 159</span>  <span class="keyword">virtual</span> ~<a class="code" href="classarrow_1_1_pool_buffer.html">PoolBuffer</a>();</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>  <a class="code" href="classarrow_1_1_status.html">Status</a> Resize(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="l00162"></a><span class="lineno"> 162</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Reserve(int64_t new_capacity) <span class="keyword">override</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">private</span>
:</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <a class="code" href="classarrow_1_1_memory_pool.html">MemoryPool</a>* pool_;</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span> };</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div><div class="line"><a name="l00168"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html"> 168</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_buffer_builder.html">BufferBuilder</a> {</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00170"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#ac574703fa5c840f84056200bc553365a"> 170</a></span>  <span cla
ss="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="l00171"></a><span class="lineno"> 171</span>  : pool_(pool), data_(nullptr), capacity_(0), size_(0) {}</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_buffer_builder.html#ae5513e6855e7a49170fd2b9178fa2bc2"> 174</a></span>  <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="classarrow_1_1_buffer_builder.html#ae5513e6855e7a49170fd2b9178fa2bc2">Resize</a>(int64_t elements) {</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="comment">// Resize(0) is a no-op</span></div><div class="line"><a name="l00176"></a><s
pan class="lineno"> 176</span>  <span class="keywordflow">if</span> (elements == 0) { <span class="keywordflow">return</span> <a class="code" href="classarrow_1_1_status.html#a5c0b0031db6eeec3dcc70485d24cfe03">Status::OK</a>(); }</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordflow">if</span> (capacity_ == 0) { buffer_ = std::make_shared<PoolBuffer>(pool_); }</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  int64_t old_capacity = capacity_;</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <a class="code" href="status_8h.html#a0a03bcf7fdbd9a96c67afa05fc0a545d">RETURN_NOT_OK</a>(buffer_->Resize(elements));</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  capacity_ = buffer_->capacity();</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  data_ = buffer_->mu
table_data();</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keywordflow">if</span> (capacity_ > old_capacity) {</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  memset(data_ + old_capacity, 0, capacity_ - old_capacity);</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>  <span class="keywordflow">return</span> <a class="code" href="classarrow_1_1_status.html#a5c0b0031db6eeec3dcc70485d24cfe03">Status::OK</a>();</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  }</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span> </div><div class="line"><a name="l00188"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#a861a36589ea59cee1125d3251bfae30c"> 188</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="l00189"></a><span class="lineno"> 189</span>  <span class="keywordflow">if</span> (capacity_ < length + size_) { <a class="code" href="status_8h.html#a0a03bcf7fdbd9a96c67afa05fc0a545d">RETURN_NOT_OK</a>(Resize(length + size_)); }</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  UnsafeAppend(data, length);</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</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="l00192"></a><span class="lineno"> 192</span>  }</div><div class="line"><a name="l00193"></a><span class="lineno"> 193
</span> </div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="comment">// Advance pointer and zero out memory</span></div><div class="line"><a name="l00195"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#aeb244237aa429582fbe9812e261eced0"> 195</a></span>  <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="classarrow_1_1_buffer_builder.html#aeb244237aa429582fbe9812e261eced0">Advance</a>(int64_t length) {</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">if</span> (capacity_ < length + size_) { <a class="code" href="status_8h.html#a0a03bcf7fdbd9a96c67afa05fc0a545d">RETURN_NOT_OK</a>(Resize(length + size_)); }</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  memset(data_ + size_, 0, static_cast<size_t>(length));</div><div class="line"><a name="l00198"></a>
<span class="lineno"> 198</span>  size_ += length;</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</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="l00200"></a><span class="lineno"> 200</span>  }</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span> </div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> T></div><div class="line"><a name="l00203"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#af6701776830a9f1663383d21da945fb4"> 203</a></span>  <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="classarrow_1_1_buffer_builder.html#af6701776830a9f1663383d21da945fb4">Append</a>(T arithmetic_value) {
</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  static_assert(std::is_arithmetic<T>::value,</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="stringliteral">"Convenience buffer append only supports arithmetic types"</span>);</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keywordflow">return</span> Append(reinterpret_cast<uint8_t*>(&arithmetic_value), <span class="keyword">sizeof</span>(T));</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  }</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>  <span class="keyword">template</span> <<span class="keyword">typename</span> T></div><div class="line"><a name="l00210"></a><span class="lineno"><a class="line" href="c
lassarrow_1_1_buffer_builder.html#a409caa84f0c679ce92305956b65f39e5"> 210</a></span>  <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="classarrow_1_1_buffer_builder.html#a409caa84f0c679ce92305956b65f39e5">Append</a>(<span class="keyword">const</span> T* arithmetic_values, int64_t num_elements) {</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  static_assert(std::is_arithmetic<T>::value,</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="stringliteral">"Convenience buffer append only supports arithmetic types"</span>);</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keywordflow">return</span> Append(</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  reinterpret_cast<const uint8_t*>(arithmetic_values), num_elements * <span class="keyword">siz
eof</span>(T));</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"> 217</span>  <span class="comment">// Unsafe methods don't check existing size</span></div><div class="line"><a name="l00218"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#acb2881c13261f9755518d76ed5c4b9b6"> 218</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="l00219"></a><span class="lineno"> 219</span>  memcpy(data_ + size_, data, static_cast<size_t>(length));</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  size_ += lengt
h;</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> </div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> T></div><div class="line"><a name="l00224"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#a39c2421e82515b15f62966e776bfc10c"> 224</a></span>  <span class="keywordtype">void</span> <a class="code" href="classarrow_1_1_buffer_builder.html#a39c2421e82515b15f62966e776bfc10c">UnsafeAppend</a>(T arithmetic_value) {</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  static_assert(std::is_arithmetic<T>::value,</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="stringliteral">"Convenience buffer append only supports
arithmetic types"</span>);</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  UnsafeAppend(reinterpret_cast<uint8_t*>(&arithmetic_value), <span class="keyword">sizeof</span>(T));</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  }</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span> </div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> T></div><div class="line"><a name="l00231"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#ab0cb2ec41eb413fa531d2a7f7e777ebb"> 231</a></span>  <span class="keywordtype">void</span> <a class="code" href="classarrow_1_1_buffer_builder.html#ab0cb2ec41eb413fa531d2a7f7e777ebb">UnsafeAppend</a>(<span class="keyword">const</span> T* arithmetic_values, int64_t num_elements) {</div><div class=
"line"><a name="l00232"></a><span class="lineno"> 232</span>  static_assert(std::is_arithmetic<T>::value,</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="stringliteral">"Convenience buffer append only supports arithmetic types"</span>);</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  UnsafeAppend(</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  reinterpret_cast<const uint8_t*>(arithmetic_values), num_elements * <span class="keyword">sizeof</span>(T));</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  }</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span> </div><div class="line"><a name="l00238"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#ab1c0d5021270dd50cafbded84899655b"> 238</a></span>  std::shared_ptr<B
uffer> <a class="code" href="classarrow_1_1_buffer_builder.html#ab1c0d5021270dd50cafbded84899655b">Finish</a>() {</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keyword">auto</span> result = buffer_;</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  buffer_ = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  capacity_ = size_ = 0;</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordflow">return</span> result;</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  }</div><div class="line"><a name="l00244"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#afa82200b93003b20848029d8f98026b6"> 244</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer_builder.html#afa82200b93003b20848029d8f98
026b6">capacity</a>() { <span class="keywordflow">return</span> capacity_; }</div><div class="line"><a name="l00245"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#abd87c9b423a1662ba9f0a6c53fb32381"> 245</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer_builder.html#abd87c9b423a1662ba9f0a6c53fb32381">length</a>() { <span class="keywordflow">return</span> size_; }</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span> </div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  std::shared_ptr<PoolBuffer> buffer_;</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <a class="code" href="classarrow_1_1_memory_pool.html">MemoryPool</a>* pool_;</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&
#160; uint8_t* data_;</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  int64_t capacity_;</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  int64_t size_;</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> </div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span> <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="namespacearrow.html#ab436e4e8cb4bc06c02dc61a1fed65743">AllocateBuffer</a>(</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <a class="code" href="classarrow_1_1_memory_pool.html">MemoryPool</a>* pool, int64_t size, std::shared_ptr<MutableBuffer>* out);</div><div class="line"><a name="l00264"></a>
<span class="lineno"> 264</span> </div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span> <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="namespacearrow.html#a68e081bce7b9d76706b9baa569c3b47c">AllocateResizableBuffer</a>(</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <a class="code" href="classarrow_1_1_memory_pool.html">MemoryPool</a>* pool, int64_t size, std::shared_ptr<ResizableBuffer>* out);</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="comment">// namespace arrow</span></div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span> </div><div class="line"><a name="l00270"></a><span class="lineno"> 270</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>Definition:</b> buffer.h:123</div></div>
-<div class="ttc" id="classarrow_1_1_mutable_buffer_html_ae5484cdf9af52f3740bf4b5f1888b38f"><div class="ttname"><a href="classarrow_1_1_mutable_buffer.html#ae5484cdf9af52f3740bf4b5f1888b38f">arrow::MutableBuffer::MutableBuffer</a></div><div class="ttdeci">MutableBuffer(uint8_t *data, int64_t size)</div><div class="ttdef"><b>Definition:</b> buffer.h:115</div></div>
-<div class="ttc" id="classarrow_1_1_buffer_html_a5620fd061758d0467d06b0edb783df73"><div class="ttname"><a href="classarrow_1_1_buffer.html#a5620fd061758d0467d06b0edb783df73">arrow::Buffer::size</a></div><div class="ttdeci">int64_t size() const </div><div class="ttdef"><b>Definition:</b> buffer.h:82</div></div>
-<div class="ttc" id="classarrow_1_1_buffer_builder_html_ab1c0d5021270dd50cafbded84899655b"><div class="ttname"><a href="classarrow_1_1_buffer_builder.html#ab1c0d5021270dd50cafbded84899655b">arrow::BufferBuilder::Finish</a></div><div class="ttdeci">std::shared_ptr< Buffer > Finish()</div><div class="ttdef"><b>Definition:</b> buffer.h:238</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:218</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:113</div></div>
-<div class="ttc" id="classarrow_1_1_buffer_html_a15aa192631fbdad93a1939d3a0b193c7"><div class="ttname"><a href="classarrow_1_1_buffer.html#a15aa192631fbdad93a1939d3a0b193c7">arrow::Buffer::is_mutable</a></div><div class="ttdeci">bool is_mutable() const </div><div class="ttdef"><b>Definition:</b> buffer.h:64</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:91</div></div>
-<div class="ttc" id="classarrow_1_1_buffer_html_a8c4faa36b9e310c99346425575014bde"><div class="ttname"><a href="classarrow_1_1_buffer.html#a8c4faa36b9e310c99346425575014bde">arrow::Buffer::parent</a></div><div class="ttdeci">std::shared_ptr< Buffer > parent() const </div><div class="ttdef"><b>Definition:</b> buffer.h:84</div></div>
-<div class="ttc" id="namespacearrow_html_a68e081bce7b9d76706b9baa569c3b47c"><div class="ttname"><a href="namespacearrow.html#a68e081bce7b9d76706b9baa569c3b47c">arrow::AllocateResizableBuffer</a></div><div class="ttdeci">Status AllocateResizableBuffer(MemoryPool *pool, int64_t size, std::shared_ptr< ResizableBuffer > *out)</div><div class="ttdef"><b>Definition:</b> buffer.cc:134</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:87</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:156</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:152</div></div>
-<div class="ttc" id="classarrow_1_1_resizable_buffer_html_a1112c5344bc770e927eef31d4c0187b2"><div class="ttname"><a href="classarrow_1_1_resizable_buffer.html#a1112c5344bc770e927eef31d4c0187b2">arrow::ResizableBuffer::TypedResize</a></div><div class="ttdeci">Status TypedResize(int64_t new_nb_elements, bool shrink_to_fit=true)</div><div class="ttdef"><b>Definition:</b> buffer.h:142</div></div>
-<div class="ttc" id="classarrow_1_1_status_html"><div class="ttname"><a href="classarrow_1_1_status.html">arrow::Status</a></div><div class="ttdef"><b>Definition:</b> status.h:75</div></div>
-<div class="ttc" id="classarrow_1_1_buffer_html_a801078c559b0c351f1ca5a6b6a04488f"><div class="ttname"><a href="classarrow_1_1_buffer.html#a801078c559b0c351f1ca5a6b6a04488f">arrow::Buffer::Buffer</a></div><div class="ttdeci">Buffer(const uint8_t *data, int64_t size)</div><div class="ttdef"><b>Definition:</b> buffer.h:48</div></div>
-<div class="ttc" id="classarrow_1_1_resizable_buffer_html_af38b01cff76a88738fce6bc19cdc84d6"><div class="ttname"><a href="classarrow_1_1_resizable_buffer.html#af38b01cff76a88738fce6bc19cdc84d6">arrow::ResizableBuffer::TypedReserve</a></div><div class="ttdeci">Status TypedReserve(int64_t new_nb_elements)</div><div class="ttdef"><b>Definition:</b> buffer.h:147</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> </div><div class="line"><a name="l00027"></a><span
class="lineno"> 27</span> <span class="preprocessor">#include "<a class="code" href="status_8h.html">arrow/status.h</a>"</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include "<a class="code" href="macros_8h.html">arrow/util/macros.h</a>"</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include "<a class="code" href="visibility_8h.html">arrow/util/visibility.h</a>"</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">namespace </span><a class="code" href="namespacearrow.html">arrow</a> {</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="key
word">class </span>MemoryPool;</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">class </span>Status;</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">// ----------------------------------------------------------------------</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">// Buffer classes</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div><div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html"> 47</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_buffer.html">Buffer</a> {</div><div class="line"><a na
me="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00049"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a801078c559b0c351f1ca5a6b6a04488f"> 49</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="l00050"></a><span class="lineno"> 50</span>  : is_mutable_(false), data_(data), size_(size), capacity_(size) {}</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div><div class="line"><a name="l00052"></a><span class="lineno"> 52</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="l00053"></a><span class="lineno"> 53</span> </div><div class="l
ine"><a name="l00061"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#af4fd71c2df93484b86a3ab1924193b05"> 61</a></span>  <a class="code" href="classarrow_1_1_buffer.html#af4fd71c2df93484b86a3ab1924193b05">Buffer</a>(<span class="keyword">const</span> std::shared_ptr<Buffer>& parent, int64_t offset, int64_t size)</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  : <a class="code" href="classarrow_1_1_buffer.html">Buffer</a>(parent->data() + offset, size) {</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  parent_ = parent;</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  }</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div><div class="line"><a name="l00066"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a8244f9c354364788161f11bedc6f2ab9"> 66</a></span>  <s
pan 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="l00067"></a><span class="lineno"> 67</span> </div><div class="line"><a name="l00070"></a><span class="lineno"> 70</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="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) <span class="keyword">const</span>;</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div><div class="line"><a name="l000
74"></a><span class="lineno"> 74</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Copy(int64_t start, int64_t nbytes, <a class="code" href="classarrow_1_1_memory_pool.html">MemoryPool</a>* pool,</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  std::shared_ptr<Buffer>* out) <span class="keyword">const</span>;</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Copy(int64_t start, int64_t nbytes, std::shared_ptr<Buffer>* out) <span class="keyword">const</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="classarrow_1_1_buffer.html#a4c75902129b5f2fb471fd166907361dc"> 80</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="l00081"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a81c3dd8c11dd804be2ada6df5ce8fad2"> 81</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="l00082"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a5a9cb9324d3f7e323eb070b553c925aa"> 82</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="l00083"></a><span class="lineno"> 83</span
> </div><div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a2a49871341c300996a39145d22aa8054"> 84</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="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#ac58d818fa0d8a5db215ca858c5e6aece"> 86</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="l00087"></a><span class="lineno"> 87</span> </div><div class="line"><a name="l00088"></a><span class="lineno"> 88<
/span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00089"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#acfefa777b4d7d6a2f7a8ea23549dac46"> 89</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="l00090"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#af468a7a1f346f9a6a29738bf585a3548"> 90</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="l00091"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#ad36e306b99bc8427865bcac9b2d4f7e5"> 91</a></span>  uint8_t* <a class="code" href="classarrow_1_1_buffer.html#ad36e306b99bc8427865bcac9b2d4f7e5">mutable_data_</a>;</div><div class="line"><a name="l00
092"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a3500e42217635843b3b34bfe92b2f73a"> 92</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer.html#a3500e42217635843b3b34bfe92b2f73a">size_</a>;</div><div class="line"><a name="l00093"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a45ee7f1e21f9f3f4cb8233be8d64731e"> 93</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer.html#a45ee7f1e21f9f3f4cb8233be8d64731e">capacity_</a>;</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="comment">// nullptr by default, but may be set</span></div><div class="line"><a name="l00096"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer.html#a3feb5a490cbd9699837067931476c65b"> 96</a></span>  std::shared_ptr<Buffer> <a class="code" href="classarrow_1_1_
buffer.html#a3feb5a490cbd9699837067931476c65b">parent_</a>;</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <a class="code" href="macros_8h.html#af8df3547bfde53a5acb93e2607b0034a">DISALLOW_COPY_AND_ASSIGN</a>(<a class="code" href="classarrow_1_1_buffer.html">Buffer</a>);</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> };</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div><div class="line"><a name="l00108"></a><span class="lineno"> 108</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="l00109"></a><spa
n class="lineno"> 109</span>  <span class="keywordflow">return</span> std::make_shared<Buffer>(</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span>uint8_t*<span class="keyword">></span>(str.c_str()), static_cast<int64_t>(str.size()));</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> }</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="keyword">static</span> <span class="keyword">inline</span> std::shared_ptr<Buffer> SliceBuffer(</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keyword">const</span> std::shared_ptr<Buffer>& buffer, int64_t offset, int64_t length) {</div><div class="line"><a name="l00117"></a><span cl
ass="lineno"> 117</span>  <span class="keywordflow">return</span> std::make_shared<Buffer>(buffer, offset, length);</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span> }</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span> </div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> std::shared_ptr<Buffer> <a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="namespacearrow.html#a21c0a6e906a9b23fcd7a823c7a46d6b4">SliceMutableBuffer</a>(</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keyword">const</span> std::shared_ptr<Buffer>& buffer, int64_t offset, int64_t length);</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div><div class="line"><a name="l00126"></a><span class="lineno"><a class="line" href="classarrow_1_1_mutable_
buffer.html"> 126</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_mutable_buffer.html">MutableBuffer</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_buffer.html">Buffer</a> {</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00128"></a><span class="lineno"><a class="line" href="classarrow_1_1_mutable_buffer.html#ae5484cdf9af52f3740bf4b5f1888b38f"> 128</a></span>  <a class="code" href="classarrow_1_1_mutable_buffer.html#ae5484cdf9af52f3740bf4b5f1888b38f">MutableBuffer</a>(uint8_t* data, int64_t size) : <a class="code" href="classarrow_1_1_buffer.html">Buffer</a>(data, size) {</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  mutable_data_ = data;</div><div class="line"><a name
="l00130"></a><span class="lineno"> 130</span>  is_mutable_ = <span class="keyword">true</span>;</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  }</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span> </div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <a class="code" href="classarrow_1_1_mutable_buffer.html">MutableBuffer</a>(<span class="keyword">const</span> std::shared_ptr<Buffer>& parent, int64_t offset, int64_t size);</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00136"></a><span class="lineno"><a class="line" href="classarrow_1_1_mutable_buffer.html#a3b01c712ad660aea1b10a0ad2b232ac7"> 136</a></span>  <a class="code" href="classarrow_1_1_mutable_buffer.html#a3b0
1c712ad660aea1b10a0ad2b232ac7">MutableBuffer</a>() : <a class="code" href="classarrow_1_1_buffer.html">Buffer</a>(nullptr, 0) {}</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span> };</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span> </div><div class="line"><a name="l00139"></a><span class="lineno"><a class="line" href="classarrow_1_1_resizable_buffer.html"> 139</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <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="l00140"></a><span class="lineno"> 140</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keyword"
>virtual</span> <a class="code" href="classarrow_1_1_status.html">Status</a> Resize(int64_t new_size, <span class="keywordtype">bool</span> shrink_to_fit = <span class="keyword">true</span>) = 0;</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</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> Reserve(int64_t new_capacity) = 0;</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span> </div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keyword">template</span> <<span class="keyword">class</span> T></div><div class="line"><a name="l00155"></a><span class="lineno"><a class="line" href="classarrow_1_1_resizable_buffer.html#a1112c5344bc770e927eef31d4c0187b2"> 155</a></span>  <a class="code" href="classarrow_1_1_status.html">Status</a> <a
class="code" href="classarrow_1_1_resizable_buffer.html#a1112c5344bc770e927eef31d4c0187b2">TypedResize</a>(int64_t new_nb_elements, <span class="keywordtype">bool</span> shrink_to_fit = <span class="keyword">true</span>) {</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</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="l00157"></a><span class="lineno"> 157</span>  }</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#af38b01cff76a88738fce6bc19cdc84d6"> 160</a></span>  <a class="code" href="classarrow_1_1_status.
html">Status</a> <a class="code" href="classarrow_1_1_resizable_buffer.html#af38b01cff76a88738fce6bc19cdc84d6">TypedReserve</a>(int64_t new_nb_elements) {</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">return</span> Reserve(<span class="keyword">sizeof</span>(T) * new_nb_elements);</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">protected</span>:</div><div class="line"><a name="l00165"></a><span class="lineno"><a class="line" href="classarrow_1_1_resizable_buffer.html#a57de64a67003a42d06a4dc9d48c60857"> 165</a></span>  <a class="code" href="classarrow_1_1_resizable_buffer.html#a57de64a67003a42d06a4dc9d48c60857">ResizableBuffer</a>(uint8_t* data, int64_t size) : <a class="code" href="cla
ssarrow_1_1_mutable_buffer.html">MutableBuffer</a>(data, size) {}</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span> };</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div><div class="line"><a name="l00169"></a><span class="lineno"><a class="line" href="classarrow_1_1_pool_buffer.html"> 169</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <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="l00170"></a><span class="lineno"> 170</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keyword">explicit</span> <a class="code" href="classarrow_1_1_pool_buffer.html">Po
olBuffer</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="l00172"></a><span class="lineno"> 172</span>  <span class="keyword">virtual</span> ~<a class="code" href="classarrow_1_1_pool_buffer.html">PoolBuffer</a>();</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Resize(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="l00175"></a><span class="lineno"> 175</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Reserve(int64_t new_capacity) <span class="keyword">override</span>;</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</s
pan> </div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <a class="code" href="classarrow_1_1_memory_pool.html">MemoryPool</a>* pool_;</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span> };</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span> </div><div class="line"><a name="l00181"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html"> 181</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_buffer_builder.html">BufferBuilder</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="li
neno"><a class="line" href="classarrow_1_1_buffer_builder.html#ac574703fa5c840f84056200bc553365a"> 183</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="l00184"></a><span class="lineno"> 184</span>  : pool_(pool), data_(nullptr), capacity_(0), size_(0) {}</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span> </div><div class="line"><a name="l00187"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#ae5513e6855e7a49170fd2b9178fa2bc2"> 187</a></span>  <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="classarrow_1_1_buffer_builder.html#ae5513e6855e7a49170fd2b9178fa2bc2">Resize</a>(int64_t elements) {</div><div class="line"><a name="l00188"></a><span class
="lineno"> 188</span>  <span class="comment">// Resize(0) is a no-op</span></div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keywordflow">if</span> (elements == 0) { <span class="keywordflow">return</span> <a class="code" href="classarrow_1_1_status.html#a5c0b0031db6eeec3dcc70485d24cfe03">Status::OK</a>(); }</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keywordflow">if</span> (capacity_ == 0) { buffer_ = std::make_shared<PoolBuffer>(pool_); }</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  int64_t old_capacity = capacity_;</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <a class="code" href="status_8h.html#a0a03bcf7fdbd9a96c67afa05fc0a545d">RETURN_NOT_OK</a>(buffer_->Resize(elements));</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  capacity_ = bu
ffer_->capacity();</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  data_ = buffer_->mutable_data();</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keywordflow">if</span> (capacity_ > old_capacity) {</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  memset(data_ + old_capacity, 0, capacity_ - old_capacity);</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  }</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</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="l00199"></a><span class="lineno"> 199</span>  }</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span> </div><div class="line"><a name="l00201"></a><span class="lin
eno"><a class="line" href="classarrow_1_1_buffer_builder.html#a861a36589ea59cee1125d3251bfae30c"> 201</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="l00202"></a><span class="lineno"> 202</span>  <span class="keywordflow">if</span> (capacity_ < length + size_) { <a class="code" href="status_8h.html#a0a03bcf7fdbd9a96c67afa05fc0a545d">RETURN_NOT_OK</a>(Resize(length + size_)); }</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  UnsafeAppend(data, length);</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</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="l00205"></a><span class="lineno"> 205</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">// Advance pointer and zero out memory</span></div><div class="line"><a name="l00208"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#aeb244237aa429582fbe9812e261eced0"> 208</a></span>  <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="classarrow_1_1_buffer_builder.html#aeb244237aa429582fbe9812e261eced0">Advance</a>(int64_t length) {</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordflow">if</span> (capacity_ < length + size_) { <a class="code" href="status_8h.html#a0a03bcf7fdbd9a96c67afa05fc0a545d">RETURN_NOT_OK</a>(Resize(length + size_)); }</div><div class="line"><a name="l00210"></a><span class="line
no"> 210</span>  memset(data_ + size_, 0, static_cast<size_t>(length));</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  size_ += length;</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</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="l00213"></a><span class="lineno"> 213</span>  }</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>  <span class="comment">// Unsafe methods don't check existing size</span></div><div class="line"><a name="l00216"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#acb2881c13261f9755518d76ed5c4b9b6"> 216</a></span>  <span class="keywordtype">void</span> <a class="code" href="cla
ssarrow_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="l00217"></a><span class="lineno"> 217</span>  memcpy(data_ + size_, data, static_cast<size_t>(length));</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  size_ += length;</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  }</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span> </div><div class="line"><a name="l00221"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#a3ca4455a595c3b8864feae94044f399e"> 221</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="l002
22"></a><span class="lineno"> 222</span>  <span class="comment">// Do not shrink to fit to avoid unneeded realloc</span></div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordflow">if</span> (size_ > 0) { <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="l00224"></a><span class="lineno"> 224</span>  *out = buffer_;</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  Reset();</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</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="l00227"></a><span class="lineno"> 227</span>  }</div><div class="line"><a name="l00228"></a><span class=
"lineno"> 228</span> </div><div class="line"><a name="l00229"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#ae8d4ba958542c2f74dbab41d1456e6aa"> 229</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="l00230"></a><span class="lineno"> 230</span>  buffer_ = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  capacity_ = size_ = 0;</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  }</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span> </div><div class="line"><a name="l00234"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#a1728b024c99b4255177659c6dcd0b650"> 234</a></span>  int64_t <a class="code" href="classarrow_1_1_bu
ffer_builder.html#a1728b024c99b4255177659c6dcd0b650">capacity</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> capacity_; }</div><div class="line"><a name="l00235"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#a9c3803b7ecb1c2c122a95b2346fbb0a2"> 235</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="l00236"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#a44d11575460cb39216ae61999a29fa2f"> 236</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="l00237"></a><
span class="lineno"> 237</span> </div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00239"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#a17f7b6b8005f1f14be61c5270776158a"> 239</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="l00240"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#ad4b857975203084d5856758a90f669a4"> 240</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="l00241"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#a58dae3a8f530eba77e77d045d86e8396">
241</a></span>  uint8_t* <a class="code" href="classarrow_1_1_buffer_builder.html#a58dae3a8f530eba77e77d045d86e8396">data_</a>;</div><div class="line"><a name="l00242"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#a91cd1d83d90defa391115f3fbdc03d63"> 242</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer_builder.html#a91cd1d83d90defa391115f3fbdc03d63">capacity_</a>;</div><div class="line"><a name="l00243"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_builder.html#ae2580f25b0c08e4bf6e0656d365b0bff"> 243</a></span>  int64_t <a class="code" href="classarrow_1_1_buffer_builder.html#ae2580f25b0c08e4bf6e0656d365b0bff">size_</a>;</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span> };</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span> </div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span> <span class="keyword">
template</span> <<span class="keyword">typename</span> T></div><div class="line"><a name="l00247"></a><span class="lineno"><a class="line" href="classarrow_1_1_typed_buffer_builder.html"> 247</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <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="l00248"></a><span class="lineno"> 248</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00249"></a><span class="lineno"><a class="line" href="classarrow_1_1_typed_buffer_builder.html#a471e5bdbf33da425e857f07e3833622e"> 249</a></span>  <span class="keyword">explicit</span> <a class="code" href="classarrow_1_1_typed_buffer_builder.html#a471e5bdbf33da425e857f07e3833622e">TypedBu
fferBuilder</a>(<a class="code" href="classarrow_1_1_memory_pool.html">MemoryPool</a>* pool) : <a class="code" href="classarrow_1_1_buffer_builder.html">BufferB
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