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+<a href="arrow_2python_2common_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>&#160;<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>&#160;<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>&#160;<span class="comment">// distributed with this work for 
additional information</span></div><div class="line"><a name="l00004"></a><span 
class="lineno">    4</span>&#160;<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>&#160;<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>&#160;<span class="comment">// 
&quot;License&quot;); you may not use this file except in 
compliance</span></div><div class="line"><a name="l00007"></a><span 
class="lineno">    7</span>&#160;<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>&#160;<span 
class="comment">//</span></div><div class="line"><a name="l00009"></a><span 
class="lineno">    9</span>&#160;<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>&#160;<span 
class="comment">//</span></div><div class="line"><a name="l00011"></a><span 
class="lineno">   11</span>&#160;<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>&#160;<span 
class="comment">// software
  distributed under the License is distributed on an</span></div><div 
class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span 
class="comment">// &quot;AS IS&quot; BASIS, WITHOUT WARRANTIES OR CONDITIONS OF 
ANY</span></div><div class="line"><a name="l00014"></a><span class="lineno">   
14</span>&#160;<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>&#160;<span class="comment">// specific language 
governing permissions and limitations</span></div><div class="line"><a 
name="l00016"></a><span class="lineno">   16</span>&#160;<span 
class="comment">// under the License.</span></div><div class="line"><a 
name="l00017"></a><span class="lineno">   17</span>&#160;</div><div 
class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span 
class="preprocessor">#ifndef ARROW_PYTHON_COMMON_H</span></div><div 
class="line"><a name="l00019"></a><span
  class="lineno">   19</span>&#160;<span class="preprocessor">#define 
ARROW_PYTHON_COMMON_H</span></div><div class="line"><a name="l00020"></a><span 
class="lineno">   20</span>&#160;</div><div class="line"><a 
name="l00021"></a><span class="lineno">   21</span>&#160;<span 
class="preprocessor">#include &lt;memory&gt;</span></div><div class="line"><a 
name="l00022"></a><span class="lineno">   22</span>&#160;<span 
class="preprocessor">#include &lt;string&gt;</span></div><div class="line"><a 
name="l00023"></a><span class="lineno">   23</span>&#160;</div><div 
class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span 
class="preprocessor">#include &quot;<a class="code" 
href="arrow_2python_2config_8h.html">arrow/python/config.h</a>&quot;</span></div><div
 class="line"><a name="l00025"></a><span class="lineno">   
25</span>&#160;</div><div class="line"><a name="l00026"></a><span 
class="lineno">   26</span>&#160;<span class="preprocessor">#include &quot;<a 
class="code" href="b
 uffer_8h.html">arrow/buffer.h</a>&quot;</span></div><div class="line"><a 
name="l00027"></a><span class="lineno">   27</span>&#160;<span 
class="preprocessor">#include &quot;<a class="code" 
href="macros_8h.html">arrow/util/macros.h</a>&quot;</span></div><div 
class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span 
class="preprocessor">#include &quot;<a class="code" 
href="visibility_8h.html">arrow/util/visibility.h</a>&quot;</span></div><div 
class="line"><a name="l00029"></a><span class="lineno">   
29</span>&#160;</div><div class="line"><a name="l00030"></a><span 
class="lineno">   30</span>&#160;<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>&#160;</div><div 
class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span 
class="keyword">class </span>MemoryPool;</div><div class="line"><a 
name="l00033"></a><span class="lineno">  
  33</span>&#160;</div><div class="line"><a name="l00034"></a><span 
class="lineno">   34</span>&#160;<span class="keyword">namespace </span>py 
{</div><div class="line"><a name="l00035"></a><span class="lineno">   
35</span>&#160;</div><div class="line"><a name="l00036"></a><span 
class="lineno"><a class="line" 
href="classarrow_1_1py_1_1_py_acquire_g_i_l.html">   36</a></span>&#160;<span 
class="keyword">class </span>ARROW_EXPORT <a class="code" 
href="classarrow_1_1py_1_1_py_acquire_g_i_l.html">PyAcquireGIL</a> {</div><div 
class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160; <span 
class="keyword">public</span>:</div><div class="line"><a 
name="l00038"></a><span class="lineno"><a class="line" 
href="classarrow_1_1py_1_1_py_acquire_g_i_l.html#a176ad0a1d753c1e1297a8c8c8e24edfc">
   38</a></span>&#160;  <a class="code" 
href="classarrow_1_1py_1_1_py_acquire_g_i_l.html#a176ad0a1d753c1e1297a8c8c8e24edfc">PyAcquireGIL</a>()
 : acquired_gil_(false) { acquire(); }</div><div class=
 "line"><a name="l00039"></a><span class="lineno">   39</span>&#160;</div><div 
class="line"><a name="l00040"></a><span class="lineno"><a class="line" 
href="classarrow_1_1py_1_1_py_acquire_g_i_l.html#aa07961f7d96ca5dd17319aa4fb65facc">
   40</a></span>&#160;  <a class="code" 
href="classarrow_1_1py_1_1_py_acquire_g_i_l.html#aa07961f7d96ca5dd17319aa4fb65facc">~PyAcquireGIL</a>()
 { release(); }</div><div class="line"><a name="l00041"></a><span 
class="lineno">   41</span>&#160;</div><div class="line"><a 
name="l00042"></a><span class="lineno"><a class="line" 
href="classarrow_1_1py_1_1_py_acquire_g_i_l.html#a705f95bb8ae5f01b9c6615ef3694aef4">
   42</a></span>&#160;  <span class="keywordtype">void</span> <a class="code" 
href="classarrow_1_1py_1_1_py_acquire_g_i_l.html#a705f95bb8ae5f01b9c6615ef3694aef4">acquire</a>()
 {</div><div class="line"><a name="l00043"></a><span class="lineno">   
43</span>&#160;    <span class="keywordflow">if</span> (!acquired_gil_) 
{</div><div class="line"><a name="l000
 44"></a><span class="lineno">   44</span>&#160;      state_ = 
PyGILState_Ensure();</div><div class="line"><a name="l00045"></a><span 
class="lineno">   45</span>&#160;      acquired_gil_ = <span 
class="keyword">true</span>;</div><div class="line"><a name="l00046"></a><span 
class="lineno">   46</span>&#160;    }</div><div class="line"><a 
name="l00047"></a><span class="lineno">   47</span>&#160;  }</div><div 
class="line"><a name="l00048"></a><span class="lineno">   
48</span>&#160;</div><div class="line"><a name="l00049"></a><span 
class="lineno">   49</span>&#160;  <span class="comment">// 
idempotent</span></div><div class="line"><a name="l00050"></a><span 
class="lineno"><a class="line" 
href="classarrow_1_1py_1_1_py_acquire_g_i_l.html#a9b0f2a430dac36520aeedd344d21fb3f">
   50</a></span>&#160;  <span class="keywordtype">void</span> <a class="code" 
href="classarrow_1_1py_1_1_py_acquire_g_i_l.html#a9b0f2a430dac36520aeedd344d21fb3f">release</a>()
 {</div><div class="line"><a name="l00051"></a
 ><span class="lineno">   51</span>&#160;    <span 
 >class="keywordflow">if</span> (acquired_gil_) {</div><div class="line"><a 
 >name="l00052"></a><span class="lineno">   52</span>&#160;      
 >PyGILState_Release(state_);</div><div class="line"><a name="l00053"></a><span 
 >class="lineno">   53</span>&#160;      acquired_gil_ = <span 
 >class="keyword">false</span>;</div><div class="line"><a 
 >name="l00054"></a><span class="lineno">   54</span>&#160;    }</div><div 
 >class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;  
 >}</div><div class="line"><a name="l00056"></a><span class="lineno">   
 >56</span>&#160;</div><div class="line"><a name="l00057"></a><span 
 >class="lineno">   57</span>&#160; <span 
 >class="keyword">private</span>:</div><div class="line"><a 
 >name="l00058"></a><span class="lineno">   58</span>&#160;  <span 
 >class="keywordtype">bool</span> acquired_gil_;</div><div class="line"><a 
 >name="l00059"></a><span class="lineno">   59</span>&#160;  PyGILState_STATE 
 >state_;</div><div c
 lass="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;  <a 
class="code" 
href="macros_8h.html#a40d72e185b1488b5659b761f0b6115bb">ARROW_DISALLOW_COPY_AND_ASSIGN</a>(<a
 class="code" 
href="classarrow_1_1py_1_1_py_acquire_g_i_l.html">PyAcquireGIL</a>);</div><div 
class="line"><a name="l00061"></a><span class="lineno">   
61</span>&#160;};</div><div class="line"><a name="l00062"></a><span 
class="lineno">   62</span>&#160;</div><div class="line"><a 
name="l00063"></a><span class="lineno"><a class="line" 
href="arrow_2python_2common_8h.html#a3736d68f2c04b7b41de8a06fb198b577">   
63</a></span>&#160;<span class="preprocessor">#define PYARROW_IS_PY2 
PY_MAJOR_VERSION &lt;= 2</span></div><div class="line"><a 
name="l00064"></a><span class="lineno">   64</span>&#160;</div><div 
class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span 
class="comment">// A RAII primitive that DECREFs the underlying PyObject* when 
it</span></div><div class="line"><a name="l00066"></a
 ><span class="lineno">   66</span>&#160;<span class="comment">// goes out of 
 >scope.</span></div><div class="line"><a name="l00067"></a><span 
 >class="lineno"><a class="line" href="classarrow_1_1py_1_1_owned_ref.html">   
 >67</a></span>&#160;<span class="keyword">class </span>ARROW_EXPORT <a 
 >class="code" href="classarrow_1_1py_1_1_owned_ref.html">OwnedRef</a> 
 >{</div><div class="line"><a name="l00068"></a><span class="lineno">   
 >68</span>&#160; <span class="keyword">public</span>:</div><div 
 >class="line"><a name="l00069"></a><span class="lineno"><a class="line" 
 >href="classarrow_1_1py_1_1_owned_ref.html#a23c568f39cefb24111a5b126342907fb"> 
 >  69</a></span>&#160;  <a class="code" 
 >href="classarrow_1_1py_1_1_owned_ref.html#a23c568f39cefb24111a5b126342907fb">OwnedRef</a>()
 > : obj_(<a class="code" 
 >href="macros_8h.html#a3ef7eab8cd0e570b6586628cc9d5ccab">NULLPTR</a>) 
 >{}</div><div class="line"><a name="l00070"></a><span class="lineno"><a 
 >class="line" href="classarrow_1_1py_1_1_owned_ref.html#abbf808f7
 6a630e08324908ff8f0164a1">   70</a></span>&#160;  <a class="code" 
href="classarrow_1_1py_1_1_owned_ref.html#abbf808f76a630e08324908ff8f0164a1">OwnedRef</a>(<a
 class="code" href="classarrow_1_1py_1_1_owned_ref.html">OwnedRef</a>&amp;&amp; 
other) : <a class="code" 
href="classarrow_1_1py_1_1_owned_ref.html">OwnedRef</a>(other.detach()) 
{}</div><div class="line"><a name="l00071"></a><span class="lineno"><a 
class="line" 
href="classarrow_1_1py_1_1_owned_ref.html#a4fa414445a0d45fc6876e22a48323818">   
71</a></span>&#160;  <span class="keyword">explicit</span> <a class="code" 
href="classarrow_1_1py_1_1_owned_ref.html#a4fa414445a0d45fc6876e22a48323818">OwnedRef</a>(PyObject*
 obj) : obj_(obj) {}</div><div class="line"><a name="l00072"></a><span 
class="lineno">   72</span>&#160;</div><div class="line"><a 
name="l00073"></a><span class="lineno"><a class="line" 
href="classarrow_1_1py_1_1_owned_ref.html#a8dbf530a3d56e9cc8be52ee72de0a2f8">   
73</a></span>&#160;  <a class="code" href="classarrow_1_1p
 y_1_1_owned_ref.html#a8dbf530a3d56e9cc8be52ee72de0a2f8">~OwnedRef</a>() { 
reset(); }</div><div class="line"><a name="l00074"></a><span class="lineno">   
74</span>&#160;</div><div class="line"><a name="l00075"></a><span 
class="lineno"><a class="line" 
href="classarrow_1_1py_1_1_owned_ref.html#ad99c47163961c1b346c3ea9836783eda">   
75</a></span>&#160;  <span class="keywordtype">void</span> <a class="code" 
href="classarrow_1_1py_1_1_owned_ref.html#ad99c47163961c1b346c3ea9836783eda">reset</a>(PyObject*
 obj) {</div><div class="line"><a name="l00076"></a><span class="lineno">   
76</span>&#160;    Py_XDECREF(obj_);</div><div class="line"><a 
name="l00077"></a><span class="lineno">   77</span>&#160;    obj_ = 
obj;</div><div class="line"><a name="l00078"></a><span class="lineno">   
78</span>&#160;  }</div><div class="line"><a name="l00079"></a><span 
class="lineno">   79</span>&#160;</div><div class="line"><a 
name="l00080"></a><span class="lineno"><a class="line" 
href="classarrow_1_1py_1_1_owned
 _ref.html#a7f4ec7d4b8ed3a376739239dd1e1987b">   80</a></span>&#160;  <span 
class="keywordtype">void</span> <a class="code" 
href="classarrow_1_1py_1_1_owned_ref.html#a7f4ec7d4b8ed3a376739239dd1e1987b">reset</a>()
 { <a class="code" 
href="classarrow_1_1py_1_1_owned_ref.html#a7f4ec7d4b8ed3a376739239dd1e1987b">reset</a>(<a
 class="code" 
href="macros_8h.html#a3ef7eab8cd0e570b6586628cc9d5ccab">NULLPTR</a>); 
}</div><div class="line"><a name="l00081"></a><span class="lineno">   
81</span>&#160;</div><div class="line"><a name="l00082"></a><span 
class="lineno"><a class="line" 
href="classarrow_1_1py_1_1_owned_ref.html#acec5dc3d562adf45d8df3a5d74cc105b">   
82</a></span>&#160;  PyObject* <a class="code" 
href="classarrow_1_1py_1_1_owned_ref.html#acec5dc3d562adf45d8df3a5d74cc105b">detach</a>()
 {</div><div class="line"><a name="l00083"></a><span class="lineno">   
83</span>&#160;    PyObject* result = obj_;</div><div class="line"><a 
name="l00084"></a><span class="lineno">   84</span>&#160;    obj_ = <a
  class="code" 
href="macros_8h.html#a3ef7eab8cd0e570b6586628cc9d5ccab">NULLPTR</a>;</div><div 
class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    
<span class="keywordflow">return</span> result;</div><div class="line"><a 
name="l00086"></a><span class="lineno">   86</span>&#160;  }</div><div 
class="line"><a name="l00087"></a><span class="lineno">   
87</span>&#160;</div><div class="line"><a name="l00088"></a><span 
class="lineno"><a class="line" 
href="classarrow_1_1py_1_1_owned_ref.html#ac9d1b421eef89af1daff63c14fe828d2">   
88</a></span>&#160;  PyObject* <a class="code" 
href="classarrow_1_1py_1_1_owned_ref.html#ac9d1b421eef89af1daff63c14fe828d2">obj</a>()<span
 class="keyword"> const </span>{ <span class="keywordflow">return</span> obj_; 
}</div><div class="line"><a name="l00089"></a><span class="lineno">   
89</span>&#160;</div><div class="line"><a name="l00090"></a><span 
class="lineno"><a class="line" 
href="classarrow_1_1py_1_1_owned_ref.html#a4f277e7908da30c54413
 6911ddd5e11e">   90</a></span>&#160;  PyObject** <a class="code" 
href="classarrow_1_1py_1_1_owned_ref.html#a4f277e7908da30c544136911ddd5e11e">ref</a>()
 { <span class="keywordflow">return</span> &amp;obj_; }</div><div 
class="line"><a name="l00091"></a><span class="lineno">   
91</span>&#160;</div><div class="line"><a name="l00092"></a><span 
class="lineno">   92</span>&#160; <span 
class="keyword">private</span>:</div><div class="line"><a 
name="l00093"></a><span class="lineno">   93</span>&#160;  <a class="code" 
href="macros_8h.html#a40d72e185b1488b5659b761f0b6115bb">ARROW_DISALLOW_COPY_AND_ASSIGN</a>(<a
 class="code" 
href="classarrow_1_1py_1_1_owned_ref.html">OwnedRef</a>);</div><div 
class="line"><a name="l00094"></a><span class="lineno">   
94</span>&#160;</div><div class="line"><a name="l00095"></a><span 
class="lineno">   95</span>&#160;  PyObject* obj_;</div><div class="line"><a 
name="l00096"></a><span class="lineno">   96</span>&#160;};</div><div 
class="line"><a name="l00097"></a><sp
 an class="lineno">   97</span>&#160;</div><div class="line"><a 
name="l00098"></a><span class="lineno">   98</span>&#160;<span 
class="comment">// Same as OwnedRef, but ensures the GIL is taken when it goes 
out of scope.</span></div><div class="line"><a name="l00099"></a><span 
class="lineno">   99</span>&#160;<span class="comment">// This is for 
situations where the GIL is not always known to be held</span></div><div 
class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;<span 
class="comment">// (e.g. if it is released in the middle of a function for 
performance reasons)</span></div><div class="line"><a name="l00101"></a><span 
class="lineno"><a class="line" 
href="classarrow_1_1py_1_1_owned_ref_no_g_i_l.html">  101</a></span>&#160;<span 
class="keyword">class </span>ARROW_EXPORT <a class="code" 
href="classarrow_1_1py_1_1_owned_ref_no_g_i_l.html">OwnedRefNoGIL</a> : <span 
class="keyword">public</span> <a class="code" 
href="classarrow_1_1py_1_1_owned_ref.html">OwnedRef</
 a> {</div><div class="line"><a name="l00102"></a><span class="lineno">  
102</span>&#160; <span class="keyword">public</span>:</div><div class="line"><a 
name="l00103"></a><span class="lineno"><a class="line" 
href="classarrow_1_1py_1_1_owned_ref_no_g_i_l.html#ad0dd0d09fc802fc0dd21718fd827b713">
  103</a></span>&#160;  <a class="code" 
href="classarrow_1_1py_1_1_owned_ref_no_g_i_l.html#ad0dd0d09fc802fc0dd21718fd827b713">OwnedRefNoGIL</a>()
 : <a class="code" href="classarrow_1_1py_1_1_owned_ref.html">OwnedRef</a>() 
{}</div><div class="line"><a name="l00104"></a><span class="lineno"><a 
class="line" 
href="classarrow_1_1py_1_1_owned_ref_no_g_i_l.html#a0087f6a81e7e6a5b0176494c47607138">
  104</a></span>&#160;  <a class="code" 
href="classarrow_1_1py_1_1_owned_ref_no_g_i_l.html#a0087f6a81e7e6a5b0176494c47607138">OwnedRefNoGIL</a>(<a
 class="code" 
href="classarrow_1_1py_1_1_owned_ref_no_g_i_l.html">OwnedRefNoGIL</a>&amp;&amp; 
other) : <a class="code" href="classarrow_1_1py_1_1_owned_ref.html">Owne
 dRef</a>(other.detach()) {}</div><div class="line"><a name="l00105"></a><span 
class="lineno"><a class="line" 
href="classarrow_1_1py_1_1_owned_ref_no_g_i_l.html#a27fb138ed68d2ff91fddff0842d923b9">
  105</a></span>&#160;  <span class="keyword">explicit</span> <a class="code" 
href="classarrow_1_1py_1_1_owned_ref_no_g_i_l.html#a27fb138ed68d2ff91fddff0842d923b9">OwnedRefNoGIL</a>(PyObject*
 obj) : <a class="code" 
href="classarrow_1_1py_1_1_owned_ref.html">OwnedRef</a>(obj) {}</div><div 
class="line"><a name="l00106"></a><span class="lineno">  
106</span>&#160;</div><div class="line"><a name="l00107"></a><span 
class="lineno"><a class="line" 
href="classarrow_1_1py_1_1_owned_ref_no_g_i_l.html#ae0943d984c8e64c5609793c149d9a5bc">
  107</a></span>&#160;  <a class="code" 
href="classarrow_1_1py_1_1_owned_ref_no_g_i_l.html#ae0943d984c8e64c5609793c149d9a5bc">~OwnedRefNoGIL</a>()
 {</div><div class="line"><a name="l00108"></a><span class="lineno">  
108</span>&#160;    <a class="code" href="classarrow_1_1
 py_1_1_py_acquire_g_i_l.html">PyAcquireGIL</a> lock;</div><div class="line"><a 
name="l00109"></a><span class="lineno">  109</span>&#160;    reset();</div><div 
class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;  
}</div><div class="line"><a name="l00111"></a><span class="lineno">  
111</span>&#160;};</div><div class="line"><a name="l00112"></a><span 
class="lineno">  112</span>&#160;</div><div class="line"><a 
name="l00113"></a><span class="lineno"><a class="line" 
href="structarrow_1_1py_1_1_py_object_stringify.html">  
113</a></span>&#160;<span class="keyword">struct </span>ARROW_EXPORT <a 
class="code" 
href="structarrow_1_1py_1_1_py_object_stringify.html">PyObjectStringify</a> 
{</div><div class="line"><a name="l00114"></a><span class="lineno"><a 
class="line" 
href="structarrow_1_1py_1_1_py_object_stringify.html#a710405190a719e7941d68b0ff9c24bbf">
  114</a></span>&#160;  <a class="code" 
href="classarrow_1_1py_1_1_owned_ref.html">OwnedRef</a> <a class="code" 
href="stru
 
ctarrow_1_1py_1_1_py_object_stringify.html#a710405190a719e7941d68b0ff9c24bbf">tmp_obj</a>;</div><div
 class="line"><a name="l00115"></a><span class="lineno"><a class="line" 
href="structarrow_1_1py_1_1_py_object_stringify.html#a4affd96a0f23d719cadb443eb179f98d">
  115</a></span>&#160;  <span class="keyword">const</span> <span 
class="keywordtype">char</span>* <a class="code" 
href="structarrow_1_1py_1_1_py_object_stringify.html#a4affd96a0f23d719cadb443eb179f98d">bytes</a>;</div><div
 class="line"><a name="l00116"></a><span class="lineno"><a class="line" 
href="structarrow_1_1py_1_1_py_object_stringify.html#a93307dd10ea2e5725a0c9e6a93b5dd48">
  116</a></span>&#160;  Py_ssize_t <a class="code" 
href="structarrow_1_1py_1_1_py_object_stringify.html#a93307dd10ea2e5725a0c9e6a93b5dd48">size</a>;</div><div
 class="line"><a name="l00117"></a><span class="lineno">  
117</span>&#160;</div><div class="line"><a name="l00118"></a><span 
class="lineno"><a class="line" href="structarrow_1_1py_1_1_py_object_str
 ingify.html#ae463580d34db2330fafa6d0651769948">  118</a></span>&#160;  <span 
class="keyword">explicit</span> <a class="code" 
href="structarrow_1_1py_1_1_py_object_stringify.html#ae463580d34db2330fafa6d0651769948">PyObjectStringify</a>(PyObject*
 obj) {</div><div class="line"><a name="l00119"></a><span class="lineno">  
119</span>&#160;    PyObject* bytes_obj;</div><div class="line"><a 
name="l00120"></a><span class="lineno">  120</span>&#160;    <span 
class="keywordflow">if</span> (PyUnicode_Check(obj)) {</div><div 
class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;      
bytes_obj = PyUnicode_AsUTF8String(obj);</div><div class="line"><a 
name="l00122"></a><span class="lineno">  122</span>&#160;      tmp_obj.<a 
class="code" 
href="classarrow_1_1py_1_1_owned_ref.html#ad99c47163961c1b346c3ea9836783eda">reset</a>(bytes_obj);</div><div
 class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;      
bytes = PyBytes_AsString(bytes_obj);</div><div class="line
 "><a name="l00124"></a><span class="lineno">  124</span>&#160;      size = 
PyBytes_GET_SIZE(bytes_obj);</div><div class="line"><a name="l00125"></a><span 
class="lineno">  125</span>&#160;    } <span class="keywordflow">else</span> 
<span class="keywordflow">if</span> (PyBytes_Check(obj)) {</div><div 
class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;      
bytes = PyBytes_AsString(obj);</div><div class="line"><a 
name="l00127"></a><span class="lineno">  127</span>&#160;      size = 
PyBytes_GET_SIZE(obj);</div><div class="line"><a name="l00128"></a><span 
class="lineno">  128</span>&#160;    } <span class="keywordflow">else</span> 
{</div><div class="line"><a name="l00129"></a><span class="lineno">  
129</span>&#160;      bytes = <a class="code" 
href="macros_8h.html#a3ef7eab8cd0e570b6586628cc9d5ccab">NULLPTR</a>;</div><div 
class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;      
size = -1;</div><div class="line"><a name="l00131"></a><span class="
 lineno">  131</span>&#160;    }</div><div class="line"><a 
name="l00132"></a><span class="lineno">  132</span>&#160;  }</div><div 
class="line"><a name="l00133"></a><span class="lineno">  
133</span>&#160;};</div><div class="line"><a name="l00134"></a><span 
class="lineno">  134</span>&#160;</div><div class="line"><a 
name="l00135"></a><span class="lineno">  135</span>&#160;<a class="code" 
href="classarrow_1_1_status.html">Status</a> <a class="code" 
href="namespacearrow_1_1py.html#a37da12f47177606bf2725384804bef19">CheckPyError</a>(<a
 class="code" 
href="namespacearrow.html#a331ad1dbd1c157c8be168cb6548d188f">StatusCode</a> 
code = <a class="code" 
href="namespacearrow.html#a331ad1dbd1c157c8be168cb6548d188fabfaef30f1c8011c5cefa38ae470fb7aa">StatusCode::UnknownError</a>);</div><div
 class="line"><a name="l00136"></a><span class="lineno">  
136</span>&#160;</div><div class="line"><a name="l00137"></a><span 
class="lineno">  137</span>&#160;<a class="code" 
href="classarrow_1_1_status.html">Status<
 /a> <a class="code" 
href="namespacearrow_1_1py.html#a420f8c193475027edf8f2fb07cb6274f">PassPyError</a>();</div><div
 class="line"><a name="l00138"></a><span class="lineno">  
138</span>&#160;</div><div class="line"><a name="l00139"></a><span 
class="lineno">  139</span>&#160;<span class="comment">// TODO(wesm): We can 
just let errors pass through. To be explored later</span></div><div 
class="line"><a name="l00140"></a><span class="lineno"><a class="line" 
href="arrow_2python_2common_8h.html#ad99052ac0ced9d8a858bd49d5bfd2ebd">  
140</a></span>&#160;<span class="preprocessor">#define RETURN_IF_PYERROR() 
RETURN_NOT_OK(CheckPyError());</span></div><div class="line"><a 
name="l00141"></a><span class="lineno">  141</span>&#160;</div><div 
class="line"><a name="l00142"></a><span class="lineno"><a class="line" 
href="arrow_2python_2common_8h.html#acae7d13f31abc214abe5d1e7c901b72f">  
142</a></span>&#160;<span class="preprocessor">#define PY_RETURN_IF_ERROR(CODE) 
RETURN_NOT_OK(CheckPyError(CODE));</s
 pan></div><div class="line"><a name="l00143"></a><span class="lineno">  
143</span>&#160;</div><div class="line"><a name="l00144"></a><span 
class="lineno">  144</span>&#160;<span class="comment">// Return the common 
PyArrow memory pool</span></div><div class="line"><a name="l00145"></a><span 
class="lineno">  145</span>&#160;ARROW_EXPORT <span 
class="keywordtype">void</span> <a class="code" 
href="namespacearrow_1_1py.html#a1c820dd57e25e43fbdfc3accd252efc4">set_default_memory_pool</a>(MemoryPool*
 pool);</div><div class="line"><a name="l00146"></a><span class="lineno">  
146</span>&#160;ARROW_EXPORT MemoryPool* <a class="code" 
href="namespacearrow_1_1py.html#a695a28adb44e701429087896352e4a07">get_memory_pool</a>();</div><div
 class="line"><a name="l00147"></a><span class="lineno">  
147</span>&#160;</div><div class="line"><a name="l00148"></a><span 
class="lineno"><a class="line" href="classarrow_1_1py_1_1_py_buffer.html">  
148</a></span>&#160;<span class="keyword">class </span>ARROW_EXPORT
  <a class="code" href="classarrow_1_1py_1_1_py_buffer.html">PyBuffer</a> : 
<span class="keyword">public</span> <a class="code" 
href="classarrow_1_1_buffer.html">Buffer</a> {</div><div class="line"><a 
name="l00149"></a><span class="lineno">  149</span>&#160; <span 
class="keyword">public</span>:</div><div class="line"><a 
name="l00152"></a><span class="lineno">  152</span>&#160;  ~<a class="code" 
href="classarrow_1_1py_1_1_py_buffer.html">PyBuffer</a>();</div><div 
class="line"><a name="l00153"></a><span class="lineno">  
153</span>&#160;</div><div class="line"><a name="l00154"></a><span 
class="lineno">  154</span>&#160;  <span class="keyword">static</span> <a 
class="code" href="classarrow_1_1_status.html">Status</a> 
FromPyObject(PyObject* obj, std::shared_ptr&lt;Buffer&gt;* out);</div><div 
class="line"><a name="l00155"></a><span class="lineno">  
155</span>&#160;</div><div class="line"><a name="l00156"></a><span 
class="lineno">  156</span>&#160; <span class="keyword">private</span>:</div
 ><div class="line"><a name="l00157"></a><span class="lineno">  
 >157</span>&#160;  <a class="code" 
 >href="classarrow_1_1py_1_1_py_buffer.html">PyBuffer</a>();</div><div 
 >class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;  <a 
 >class="code" href="classarrow_1_1_status.html">Status</a> 
 >Init(PyObject*);</div><div class="line"><a name="l00159"></a><span 
 >class="lineno">  159</span>&#160;</div><div class="line"><a 
 >name="l00160"></a><span class="lineno">  160</span>&#160;  Py_buffer 
 >py_buf_;</div><div class="line"><a name="l00161"></a><span class="lineno">  
 >161</span>&#160;};</div><div class="line"><a name="l00162"></a><span 
 >class="lineno">  162</span>&#160;</div><div class="line"><a 
 >name="l00163"></a><span class="lineno">  163</span>&#160;}  <span 
 >class="comment">// namespace py</span></div><div class="line"><a 
 >name="l00164"></a><span class="lineno">  164</span>&#160;}  <span 
 >class="comment">// namespace arrow</span></div><div class="line"><a 
 >name="l00165"></a><span class
 ="lineno">  165</span>&#160;</div><div class="line"><a name="l00166"></a><span 
class="lineno">  166</span>&#160;<span class="preprocessor">#endif  // 
ARROW_PYTHON_COMMON_H</span></div><div class="ttc" 
id="classarrow_1_1py_1_1_owned_ref_no_g_i_l_html_a0087f6a81e7e6a5b0176494c47607138"><div
 class="ttname"><a 
href="classarrow_1_1py_1_1_owned_ref_no_g_i_l.html#a0087f6a81e7e6a5b0176494c47607138">arrow::py::OwnedRefNoGIL::OwnedRefNoGIL</a></div><div
 class="ttdeci">OwnedRefNoGIL(OwnedRefNoGIL &amp;&amp;other)</div><div 
class="ttdef"><b>Definition:</b> common.h:104</div></div>
+<div class="ttc" 
id="classarrow_1_1py_1_1_owned_ref_no_g_i_l_html_ad0dd0d09fc802fc0dd21718fd827b713"><div
 class="ttname"><a 
href="classarrow_1_1py_1_1_owned_ref_no_g_i_l.html#ad0dd0d09fc802fc0dd21718fd827b713">arrow::py::OwnedRefNoGIL::OwnedRefNoGIL</a></div><div
 class="ttdeci">OwnedRefNoGIL()</div><div class="ttdef"><b>Definition:</b> 
common.h:103</div></div>
+<div class="ttc" 
id="classarrow_1_1py_1_1_owned_ref_no_g_i_l_html_a27fb138ed68d2ff91fddff0842d923b9"><div
 class="ttname"><a 
href="classarrow_1_1py_1_1_owned_ref_no_g_i_l.html#a27fb138ed68d2ff91fddff0842d923b9">arrow::py::OwnedRefNoGIL::OwnedRefNoGIL</a></div><div
 class="ttdeci">OwnedRefNoGIL(PyObject *obj)</div><div 
class="ttdef"><b>Definition:</b> common.h:105</div></div>
+<div class="ttc" 
id="structarrow_1_1py_1_1_py_object_stringify_html_a93307dd10ea2e5725a0c9e6a93b5dd48"><div
 class="ttname"><a 
href="structarrow_1_1py_1_1_py_object_stringify.html#a93307dd10ea2e5725a0c9e6a93b5dd48">arrow::py::PyObjectStringify::size</a></div><div
 class="ttdeci">Py_ssize_t size</div><div class="ttdef"><b>Definition:</b> 
common.h:116</div></div>
+<div class="ttc" id="structarrow_1_1py_1_1_py_object_stringify_html"><div 
class="ttname"><a 
href="structarrow_1_1py_1_1_py_object_stringify.html">arrow::py::PyObjectStringify</a></div><div
 class="ttdef"><b>Definition:</b> common.h:113</div></div>
+<div class="ttc" 
id="classarrow_1_1py_1_1_owned_ref_html_a7f4ec7d4b8ed3a376739239dd1e1987b"><div 
class="ttname"><a 
href="classarrow_1_1py_1_1_owned_ref.html#a7f4ec7d4b8ed3a376739239dd1e1987b">arrow::py::OwnedRef::reset</a></div><div
 class="ttdeci">void reset()</div><div class="ttdef"><b>Definition:</b> 
common.h:80</div></div>
+<div class="ttc" 
id="classarrow_1_1py_1_1_owned_ref_html_a23c568f39cefb24111a5b126342907fb"><div 
class="ttname"><a 
href="classarrow_1_1py_1_1_owned_ref.html#a23c568f39cefb24111a5b126342907fb">arrow::py::OwnedRef::OwnedRef</a></div><div
 class="ttdeci">OwnedRef()</div><div class="ttdef"><b>Definition:</b> 
common.h:69</div></div>
+<div class="ttc" id="macros_8h_html_a3ef7eab8cd0e570b6586628cc9d5ccab"><div 
class="ttname"><a 
href="macros_8h.html#a3ef7eab8cd0e570b6586628cc9d5ccab">NULLPTR</a></div><div 
class="ttdeci">#define NULLPTR</div><div class="ttdef"><b>Definition:</b> 
macros.h:69</div></div>
+<div class="ttc" 
id="namespacearrow_html_a331ad1dbd1c157c8be168cb6548d188f"><div 
class="ttname"><a 
href="namespacearrow.html#a331ad1dbd1c157c8be168cb6548d188f">arrow::StatusCode</a></div><div
 class="ttdeci">StatusCode</div><div class="ttdef"><b>Definition:</b> 
status.h:85</div></div>
+<div class="ttc" 
id="classarrow_1_1py_1_1_owned_ref_html_a8dbf530a3d56e9cc8be52ee72de0a2f8"><div 
class="ttname"><a 
href="classarrow_1_1py_1_1_owned_ref.html#a8dbf530a3d56e9cc8be52ee72de0a2f8">arrow::py::OwnedRef::~OwnedRef</a></div><div
 class="ttdeci">~OwnedRef()</div><div class="ttdef"><b>Definition:</b> 
common.h:73</div></div>
+<div class="ttc" 
id="classarrow_1_1py_1_1_owned_ref_html_acec5dc3d562adf45d8df3a5d74cc105b"><div 
class="ttname"><a 
href="classarrow_1_1py_1_1_owned_ref.html#acec5dc3d562adf45d8df3a5d74cc105b">arrow::py::OwnedRef::detach</a></div><div
 class="ttdeci">PyObject * detach()</div><div class="ttdef"><b>Definition:</b> 
common.h:82</div></div>
+<div class="ttc" 
id="classarrow_1_1py_1_1_owned_ref_html_ac9d1b421eef89af1daff63c14fe828d2"><div 
class="ttname"><a 
href="classarrow_1_1py_1_1_owned_ref.html#ac9d1b421eef89af1daff63c14fe828d2">arrow::py::OwnedRef::obj</a></div><div
 class="ttdeci">PyObject * obj() const</div><div 
class="ttdef"><b>Definition:</b> common.h:88</div></div>
+<div class="ttc" 
id="structarrow_1_1py_1_1_py_object_stringify_html_ae463580d34db2330fafa6d0651769948"><div
 class="ttname"><a 
href="structarrow_1_1py_1_1_py_object_stringify.html#ae463580d34db2330fafa6d0651769948">arrow::py::PyObjectStringify::PyObjectStringify</a></div><div
 class="ttdeci">PyObjectStringify(PyObject *obj)</div><div 
class="ttdef"><b>Definition:</b> common.h:118</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:106</div></div>
+<div class="ttc" id="macros_8h_html"><div class="ttname"><a 
href="macros_8h.html">macros.h</a></div></div>
+<div class="ttc" 
id="classarrow_1_1py_1_1_py_acquire_g_i_l_html_a705f95bb8ae5f01b9c6615ef3694aef4"><div
 class="ttname"><a 
href="classarrow_1_1py_1_1_py_acquire_g_i_l.html#a705f95bb8ae5f01b9c6615ef3694aef4">arrow::py::PyAcquireGIL::acquire</a></div><div
 class="ttdeci">void acquire()</div><div class="ttdef"><b>Definition:</b> 
common.h:42</div></div>
+<div class="ttc" 
id="classarrow_1_1py_1_1_py_acquire_g_i_l_html_a9b0f2a430dac36520aeedd344d21fb3f"><div
 class="ttname"><a 
href="classarrow_1_1py_1_1_py_acquire_g_i_l.html#a9b0f2a430dac36520aeedd344d21fb3f">arrow::py::PyAcquireGIL::release</a></div><div
 class="ttdeci">void release()</div><div class="ttdef"><b>Definition:</b> 
common.h:50</div></div>
+<div class="ttc" 
id="namespacearrow_1_1py_html_a37da12f47177606bf2725384804bef19"><div 
class="ttname"><a 
href="namespacearrow_1_1py.html#a37da12f47177606bf2725384804bef19">arrow::py::CheckPyError</a></div><div
 class="ttdeci">Status CheckPyError(StatusCode 
code=StatusCode::UnknownError)</div></div>
+<div class="ttc" id="visibility_8h_html"><div class="ttname"><a 
href="visibility_8h.html">visibility.h</a></div></div>
+<div class="ttc" 
id="classarrow_1_1py_1_1_owned_ref_html_abbf808f76a630e08324908ff8f0164a1"><div 
class="ttname"><a 
href="classarrow_1_1py_1_1_owned_ref.html#abbf808f76a630e08324908ff8f0164a1">arrow::py::OwnedRef::OwnedRef</a></div><div
 class="ttdeci">OwnedRef(OwnedRef &amp;&amp;other)</div><div 
class="ttdef"><b>Definition:</b> common.h:70</div></div>
+<div class="ttc" 
id="namespacearrow_1_1py_html_a695a28adb44e701429087896352e4a07"><div 
class="ttname"><a 
href="namespacearrow_1_1py.html#a695a28adb44e701429087896352e4a07">arrow::py::get_memory_pool</a></div><div
 class="ttdeci">MemoryPool * get_memory_pool()</div></div>
+<div class="ttc" id="classarrow_1_1py_1_1_py_buffer_html"><div 
class="ttname"><a 
href="classarrow_1_1py_1_1_py_buffer.html">arrow::py::PyBuffer</a></div><div 
class="ttdef"><b>Definition:</b> common.h:148</div></div>
+<div class="ttc" 
id="classarrow_1_1py_1_1_owned_ref_html_ad99c47163961c1b346c3ea9836783eda"><div 
class="ttname"><a 
href="classarrow_1_1py_1_1_owned_ref.html#ad99c47163961c1b346c3ea9836783eda">arrow::py::OwnedRef::reset</a></div><div
 class="ttdeci">void reset(PyObject *obj)</div><div 
class="ttdef"><b>Definition:</b> common.h:75</div></div>
+<div class="ttc" id="namespacearrow_html"><div class="ttname"><a 
href="namespacearrow.html">arrow</a></div><div class="ttdoc">Top-level 
namespace for Apache Arrow C++ API. </div><div class="ttdef"><b>Definition:</b> 
adapter.h:32</div></div>
+<div class="ttc" 
id="classarrow_1_1py_1_1_owned_ref_html_a4fa414445a0d45fc6876e22a48323818"><div 
class="ttname"><a 
href="classarrow_1_1py_1_1_owned_ref.html#a4fa414445a0d45fc6876e22a48323818">arrow::py::OwnedRef::OwnedRef</a></div><div
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common.h:107</div></div>
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class="ttdef"><b>Definition:</b> macros.h:23</div></div>
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namespace for Apache Arrow C++ API. </div><div class="ttdef"><b>Definition:</b> 
adapter.h:32</div></div>
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http://git-wip-us.apache.org/repos/asf/arrow-site/blob/3cd84682/build/docs/cpp/arrow_2python_2io_8cc.html
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File Reference</title>
+<link href="tabs.css" rel="stylesheet" type="text/css"/>
+<script type="text/javascript" src="jquery.js"></script>
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+  <td id="projectalign" style="padding-left: 0.5em;">
+   <div id="projectname">Apache Arrow (C++)
+   </div>
+   <div id="projectbrief">A columnar in-memory analytics layer designed to 
accelerate big data.</div>
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href="dir_4f683177589ce7b8fe2ef6d807198da3.html">arrow</a></li><li 
class="navelem"><a class="el" 
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+  <div class="summary">
+<a href="#namespaces">Namespaces</a>  </div>
+  <div class="headertitle">
+<div class="title">io.cc File Reference</div>  </div>
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+<div class="textblock"><code>#include &quot;<a class="el" 
href="arrow_2python_2io_8h_source.html">arrow/python/io.h</a>&quot;</code><br />
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+<code>#include &quot;<a class="el" 
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+<code>#include &quot;<a class="el" 
href="memory__pool_8h_source.html">arrow/memory_pool.h</a>&quot;</code><br />
+<code>#include &quot;<a class="el" 
href="status_8h_source.html">arrow/status.h</a>&quot;</code><br />
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href="arrow_2python_2common_8h_source.html">arrow/python/common.h</a>&quot;</code><br
 />
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valign="top"> &#160;</td><td class="memItemRight" valign="bottom"><a class="el" 
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class="mdescRight">Public API for the "Feather" file format, originally created 
at <a href="http://github.com/wesm/feather";>http://github.com/wesm/feather</a>. 
<br /></td></tr>
+<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
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