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<div class="title">bit-stream-utils.8byte.inline.h</div> </div>
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<a href="bit-stream-utils_88byte_8inline_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">// Copyright 2012 Cloudera Inc.</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">// Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">// you may not use this file except in compliance with the License.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">// You may obtain a copy of the License at</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</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">// Unless required by applicable law or agreed to in writing, software</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment">// distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment">// See the License for the specific language governing permissions and</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment">// limitations under the License.</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;</div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="preprocessor">#ifndef IMPALA_EXPERIMENTS_BIT_STREAM_UTILS_8BYTE_INLINE_H</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define IMPALA_EXPERIMENTS_BIT_STREAM_UTILS_8BYTE_INLINE_H</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="bit-stream-utils_88byte_8h.html">experiments/bit-stream-utils.8byte.h</a>&quot;</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="keyword">namespace </span>impala {</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;</div>
<div class="line"><a name="l00023"></a><span class="lineno"><a class="line" href="classimpala_1_1BitWriter__8byte.html#a6057d22ba0fafddf4caea3f190bac7a3"> 23</a></span>&#160;<span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classimpala_1_1BitWriter__8byte.html#a6057d22ba0fafddf4caea3f190bac7a3">BitWriter_8byte::PutValue</a>(<a class="code" href="classuint64__t.html">uint64_t</a> v, <span class="keywordtype">int</span> num_bits) {</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; DCHECK_LE(num_bits, 64);</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; DCHECK(num_bits == 64 || v &gt;&gt; num_bits == 0)</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; &lt;&lt; <span class="stringliteral">&quot;v = &quot;</span> &lt;&lt; v &lt;&lt; <span class="stringliteral">&quot;, num_bits = &quot;</span> &lt;&lt; num_bits;</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="compiler-util_8h.html#a9acc330d508b9a3b775cfdf7ce405e7d">UNLIKELY</a>(<a class="code" href="classimpala_1_1BitWriter__8byte.html#abecb51d71d1caa9a1ebf2444f9ac4fb3">offset_</a> * 8 + <a class="code" href="classimpala_1_1BitWriter__8byte.html#a8783bebc7f32fc05f17775a5dfb641fd">bit_offset_</a> &gt; <a class="code" href="classimpala_1_1BitWriter__8byte.html#ab1f4addf073b34184618ffb8dc521a94">max_bytes_</a> * 8 - num_bits)) <span class="keywordflow">return</span> <span class="keyword">false</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; <a class="code" href="classimpala_1_1BitWriter__8byte.html#ab0050001cb618e8fe4d3f734ebb95e89">buffer_</a>[<a class="code" href="classimpala_1_1BitWriter__8byte.html#abecb51d71d1caa9a1ebf2444f9ac4fb3">offset_</a>] |= v &lt;&lt; <a class="code" href="classimpala_1_1BitWriter__8byte.html#a8783bebc7f32fc05f17775a5dfb641fd">bit_offset_</a>;</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; bit_offset_ += num_bits;</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; <span class="keywordflow">if</span> (bit_offset_ &gt;= 64) {</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; ++<a class="code" href="classimpala_1_1BitWriter__8byte.html#abecb51d71d1caa9a1ebf2444f9ac4fb3">offset_</a>;</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; bit_offset_ -= 64;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="compiler-util_8h.html#a9acc330d508b9a3b775cfdf7ce405e7d">UNLIKELY</a>(bit_offset_ &gt; 0)) {</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; <span class="comment">// Write out bits of v that crossed into new byte offset</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; <span class="comment">// We cannot perform v &gt;&gt; num_bits (i.e. when bit_offset_ is 0) because v &gt;&gt; 64 != 0</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <a class="code" href="classimpala_1_1BitWriter__8byte.html#ab0050001cb618e8fe4d3f734ebb95e89">buffer_</a>[<a class="code" href="classimpala_1_1BitWriter__8byte.html#abecb51d71d1caa9a1ebf2444f9ac4fb3">offset_</a>] = v &gt;&gt; (num_bits - <a class="code" href="classimpala_1_1BitWriter__8byte.html#a8783bebc7f32fc05f17775a5dfb641fd">bit_offset_</a>);</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; }</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; }</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; DCHECK_LT(bit_offset_, 64);</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;}</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;</div>
<div class="line"><a name="l00045"></a><span class="lineno"><a class="line" href="classimpala_1_1BitWriter__8byte.html#ac9f4753bd5eab5c6a554657876b3fd32"> 45</a></span>&#160;<span class="keyword">inline</span> uint8_t* <a class="code" href="classimpala_1_1BitWriter__8byte.html#ac9f4753bd5eab5c6a554657876b3fd32">BitWriter_8byte::GetNextBytePtr</a>(<span class="keywordtype">int</span> num_bytes) {</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="compiler-util_8h.html#a9acc330d508b9a3b775cfdf7ce405e7d">UNLIKELY</a>(<a class="code" href="classimpala_1_1BitWriter__8byte.html#a20114a8283837be7cd333974b4567d1c">bytes_written</a>() + num_bytes &gt; <a class="code" href="classimpala_1_1BitWriter__8byte.html#ab1f4addf073b34184618ffb8dc521a94">max_bytes_</a>)) <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <span class="comment">// Advance to next aligned byte if necessary</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="compiler-util_8h.html#a9acc330d508b9a3b775cfdf7ce405e7d">UNLIKELY</a>(<a class="code" href="classimpala_1_1BitWriter__8byte.html#a8783bebc7f32fc05f17775a5dfb641fd">bit_offset_</a> &gt; 56)) {</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; ++<a class="code" href="classimpala_1_1BitWriter__8byte.html#abecb51d71d1caa9a1ebf2444f9ac4fb3">offset_</a>;</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <a class="code" href="classimpala_1_1BitWriter__8byte.html#a8783bebc7f32fc05f17775a5dfb641fd">bit_offset_</a> = 0;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <a class="code" href="classimpala_1_1BitWriter__8byte.html#a8783bebc7f32fc05f17775a5dfb641fd">bit_offset_</a> = <a class="code" href="classimpala_1_1BitUtil.html#aea8660e5c51f23f4e6c3708a758e37e5">BitUtil::RoundUpNumBytes</a>(<a class="code" href="classimpala_1_1BitWriter__8byte.html#a8783bebc7f32fc05f17775a5dfb641fd">bit_offset_</a>) * 8;</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; DCHECK_EQ(<a class="code" href="classimpala_1_1BitWriter__8byte.html#a8783bebc7f32fc05f17775a5dfb641fd">bit_offset_</a> % 8, 0);</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; uint8_t* ptr = <span class="keyword">reinterpret_cast&lt;</span>uint8_t*<span class="keyword">&gt;</span>(<a class="code" href="classimpala_1_1BitWriter__8byte.html#ab0050001cb618e8fe4d3f734ebb95e89">buffer_</a> + <a class="code" href="classimpala_1_1BitWriter__8byte.html#abecb51d71d1caa9a1ebf2444f9ac4fb3">offset_</a>) + <a class="code" href="classimpala_1_1BitWriter__8byte.html#a8783bebc7f32fc05f17775a5dfb641fd">bit_offset_</a> / 8;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <a class="code" href="classimpala_1_1BitWriter__8byte.html#a8783bebc7f32fc05f17775a5dfb641fd">bit_offset_</a> += num_bytes * 8;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <a class="code" href="classimpala_1_1BitWriter__8byte.html#abecb51d71d1caa9a1ebf2444f9ac4fb3">offset_</a> += <a class="code" href="classimpala_1_1BitWriter__8byte.html#a8783bebc7f32fc05f17775a5dfb641fd">bit_offset_</a> / 64;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; <a class="code" href="classimpala_1_1BitWriter__8byte.html#a8783bebc7f32fc05f17775a5dfb641fd">bit_offset_</a> %= 64;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="keywordflow">return</span> ptr;</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"> 63</span>&#160;</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00065"></a><span class="lineno"><a class="line" href="classimpala_1_1BitWriter__8byte.html#a1e6cdd684a21243e3a1733c2312cedf2"> 65</a></span>&#160;<span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classimpala_1_1BitWriter__8byte.html#a1e6cdd684a21243e3a1733c2312cedf2">BitWriter_8byte::PutAligned</a>(T val, <span class="keywordtype">int</span> num_bits) {</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="comment">// Align to byte boundary</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; uint8_t* byte_ptr = <a class="code" href="classimpala_1_1BitWriter__8byte.html#ac9f4753bd5eab5c6a554657876b3fd32">GetNextBytePtr</a>(0);</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keywordtype">bool</span> result = <a class="code" href="classimpala_1_1BitWriter__8byte.html#a6057d22ba0fafddf4caea3f190bac7a3">PutValue</a>(val, num_bits);</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="keywordflow">if</span> (!result) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="comment">// Pad to next byte boundary</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; byte_ptr = <a class="code" href="classimpala_1_1BitWriter__8byte.html#ac9f4753bd5eab5c6a554657876b3fd32">GetNextBytePtr</a>(0);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; DCHECK(byte_ptr != NULL);</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</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"> 75</span>&#160;</div>
<div class="line"><a name="l00076"></a><span class="lineno"><a class="line" href="classimpala_1_1BitWriter__8byte.html#a7d4c71b694bedbe009e9e9aee285ac06"> 76</a></span>&#160;<span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classimpala_1_1BitWriter__8byte.html#a7d4c71b694bedbe009e9e9aee285ac06">BitWriter_8byte::PutVlqInt</a>(int32_t v) {</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="keywordtype">bool</span> result = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="keywordflow">while</span> ((v &amp; 0xFFFFFF80) != 0L) {</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; result &amp;= PutAligned&lt;uint8_t&gt;((v &amp; 0x7F) | 0x80, 8);</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; v &gt;&gt;= 7;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; }</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; result &amp;= PutAligned&lt;uint8_t&gt;(v &amp; 0x7F, 8);</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;}</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00087"></a><span class="lineno"><a class="line" href="classimpala_1_1BitReader__8byte.html#a744617f92cd6341740019af5f4861f4c"> 87</a></span>&#160;<span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classimpala_1_1BitReader__8byte.html#a744617f92cd6341740019af5f4861f4c">BitReader_8byte::GetValue</a>(<span class="keywordtype">int</span> num_bits, T* v) {</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="keywordtype">int</span> size = <span class="keyword">sizeof</span>(T) * 8;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; DCHECK_LE(num_bits, size);</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="compiler-util_8h.html#a9acc330d508b9a3b775cfdf7ce405e7d">UNLIKELY</a>(<a class="code" href="classimpala_1_1BitReader__8byte.html#a1ac918fde6353ee958189d6c7538f358">offset_</a> * 8 + <a class="code" href="classimpala_1_1BitReader__8byte.html#a5b48a90406a579ef4d1a4ba1493cffa6">bit_offset_</a> &gt; <a class="code" href="classimpala_1_1BitReader__8byte.html#a06826bb7a759b8ccb7d71759c10d7e91">max_bytes_</a> * 8 - num_bits)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</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; *v = <a class="code" href="classimpala_1_1BitUtil.html#a4808e9b65d748f9a93661abafe5792ed">BitUtil::TrailingBits</a>(<a class="code" href="classimpala_1_1BitReader__8byte.html#a046c83097fd728a8e4c1afbb3866e0a3">buffer_</a>[<a class="code" href="classimpala_1_1BitReader__8byte.html#a1ac918fde6353ee958189d6c7538f358">offset_</a>], <a class="code" href="classimpala_1_1BitReader__8byte.html#a5b48a90406a579ef4d1a4ba1493cffa6">bit_offset_</a> + num_bits) &gt;&gt; <a class="code" href="classimpala_1_1BitReader__8byte.html#a5b48a90406a579ef4d1a4ba1493cffa6">bit_offset_</a>;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <a class="code" href="classimpala_1_1BitReader__8byte.html#a5b48a90406a579ef4d1a4ba1493cffa6">bit_offset_</a> += num_bits;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="classimpala_1_1BitReader__8byte.html#a5b48a90406a579ef4d1a4ba1493cffa6">bit_offset_</a> &gt;= 64) {</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; ++<a class="code" href="classimpala_1_1BitReader__8byte.html#a1ac918fde6353ee958189d6c7538f358">offset_</a>;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <a class="code" href="classimpala_1_1BitReader__8byte.html#a5b48a90406a579ef4d1a4ba1493cffa6">bit_offset_</a> -= 64;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; <span class="comment">// Read bits of v that crossed into new byte offset</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; *v |= <a class="code" href="classimpala_1_1BitUtil.html#a4808e9b65d748f9a93661abafe5792ed">BitUtil::TrailingBits</a>(</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; <a class="code" href="classimpala_1_1BitReader__8byte.html#a046c83097fd728a8e4c1afbb3866e0a3">buffer_</a>[offset_], <a class="code" href="classimpala_1_1BitReader__8byte.html#a5b48a90406a579ef4d1a4ba1493cffa6">bit_offset_</a>) &lt;&lt; (num_bits - <a class="code" href="classimpala_1_1BitReader__8byte.html#a5b48a90406a579ef4d1a4ba1493cffa6">bit_offset_</a>);</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; }</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; DCHECK_LT(<a class="code" href="classimpala_1_1BitReader__8byte.html#a5b48a90406a579ef4d1a4ba1493cffa6">bit_offset_</a>, 64);</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;}</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00106"></a><span class="lineno"><a class="line" href="classimpala_1_1BitReader__8byte.html#aa3f8a1cf81ec0e6b4324c4ecae6589a9"> 106</a></span>&#160;<span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classimpala_1_1BitReader__8byte.html#aa3f8a1cf81ec0e6b4324c4ecae6589a9">BitReader_8byte::GetAligned</a>(<span class="keywordtype">int</span> num_bits, T* v) {</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <a class="code" href="classimpala_1_1BitReader__8byte.html#ab9b53c8dfd892247bf59d34f19f10abb">Align</a>();</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="compiler-util_8h.html#a9acc330d508b9a3b775cfdf7ce405e7d">UNLIKELY</a>(<a class="code" href="classimpala_1_1BitReader__8byte.html#a6eafe69d17a7073df9df0296870e522f">bytes_left</a>() &lt; <a class="code" href="classimpala_1_1BitUtil.html#a372c4cce3b2fd79c710ec36d01afda07">BitUtil::Ceil</a>(num_bits, 8))) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; DCHECK_EQ(<a class="code" href="classimpala_1_1BitReader__8byte.html#a5b48a90406a579ef4d1a4ba1493cffa6">bit_offset_</a> % 8, 0);</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; <span class="keywordtype">bool</span> result = <a class="code" href="classimpala_1_1BitReader__8byte.html#a744617f92cd6341740019af5f4861f4c">GetValue</a>(num_bits, v);</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; DCHECK(result);</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <a class="code" href="classimpala_1_1BitReader__8byte.html#ab9b53c8dfd892247bf59d34f19f10abb">Align</a>();</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;}</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;</div>
<div class="line"><a name="l00116"></a><span class="lineno"><a class="line" href="classimpala_1_1BitReader__8byte.html#a28d08fefbf6c469bca1387375dce9221"> 116</a></span>&#160;<span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classimpala_1_1BitReader__8byte.html#a28d08fefbf6c469bca1387375dce9221">BitReader_8byte::GetVlqInt</a>(int32_t* v) {</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; *v = 0;</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; <span class="keywordtype">int</span> shift = 0;</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; <span class="keywordtype">int</span> num_bytes = 0;</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; uint8_t byte = 0;</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; <span class="keywordflow">do</span> {</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; <span class="keywordflow">if</span> (!GetAligned&lt;uint8_t&gt;(8, &amp;byte)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; *v |= (byte &amp; 0x7F) &lt;&lt; shift;</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; shift += 7;</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; DCHECK_LE(++num_bytes, <a class="code" href="classimpala_1_1BitReader__8byte.html#ad3b3ccf8b223d4c99cf65acf64ce517d">MAX_VLQ_BYTE_LEN</a>);</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; } <span class="keywordflow">while</span> ((byte &amp; 0x80) != 0);</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;}</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;</div>
<div class="line"><a name="l00130"></a><span class="lineno"><a class="line" href="classimpala_1_1BitReader__8byte.html#ab9b53c8dfd892247bf59d34f19f10abb"> 130</a></span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classimpala_1_1BitReader__8byte.html#ab9b53c8dfd892247bf59d34f19f10abb">BitReader_8byte::Align</a>() {</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="compiler-util_8h.html#a9acc330d508b9a3b775cfdf7ce405e7d">UNLIKELY</a>(<a class="code" href="classimpala_1_1BitReader__8byte.html#a5b48a90406a579ef4d1a4ba1493cffa6">bit_offset_</a> &gt; 56)) {</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; ++<a class="code" href="classimpala_1_1BitReader__8byte.html#a1ac918fde6353ee958189d6c7538f358">offset_</a>;</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; <a class="code" href="classimpala_1_1BitReader__8byte.html#a5b48a90406a579ef4d1a4ba1493cffa6">bit_offset_</a> = 0;</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; DCHECK_LE(<a class="code" href="classimpala_1_1BitReader__8byte.html#a1ac918fde6353ee958189d6c7538f358">offset_</a>, <a class="code" href="classimpala_1_1BitReader__8byte.html#a06826bb7a759b8ccb7d71759c10d7e91">max_bytes_</a>);</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; <a class="code" href="classimpala_1_1BitReader__8byte.html#a5b48a90406a579ef4d1a4ba1493cffa6">bit_offset_</a> = <a class="code" href="classimpala_1_1BitUtil.html#aea8660e5c51f23f4e6c3708a758e37e5">BitUtil::RoundUpNumBytes</a>(<a class="code" href="classimpala_1_1BitReader__8byte.html#a5b48a90406a579ef4d1a4ba1493cffa6">bit_offset_</a>) * 8;</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; }</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;</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;}</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"> 142</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="ttc" id="classimpala_1_1BitWriter__8byte_html_a7d4c71b694bedbe009e9e9aee285ac06"><div class="ttname"><a href="classimpala_1_1BitWriter__8byte.html#a7d4c71b694bedbe009e9e9aee285ac06">impala::BitWriter_8byte::PutVlqInt</a></div><div class="ttdeci">bool PutVlqInt(int32_t v)</div><div class="ttdef"><b>Definition:</b> <a href="bit-stream-utils_88byte_8inline_8h_source.html#l00076">bit-stream-utils.8byte.inline.h:76</a></div></div>
<div class="ttc" id="classimpala_1_1BitReader__8byte_html_a1ac918fde6353ee958189d6c7538f358"><div class="ttname"><a href="classimpala_1_1BitReader__8byte.html#a1ac918fde6353ee958189d6c7538f358">impala::BitReader_8byte::offset_</a></div><div class="ttdeci">int offset_</div><div class="ttdef"><b>Definition:</b> <a href="bit-stream-utils_88byte_8h_source.html#l00125">bit-stream-utils.8byte.h:125</a></div></div>
<div class="ttc" id="classimpala_1_1BitReader__8byte_html_a06826bb7a759b8ccb7d71759c10d7e91"><div class="ttname"><a href="classimpala_1_1BitReader__8byte.html#a06826bb7a759b8ccb7d71759c10d7e91">impala::BitReader_8byte::max_bytes_</a></div><div class="ttdeci">int max_bytes_</div><div class="ttdef"><b>Definition:</b> <a href="bit-stream-utils_88byte_8h_source.html#l00124">bit-stream-utils.8byte.h:124</a></div></div>
<div class="ttc" id="classimpala_1_1BitReader__8byte_html_a6eafe69d17a7073df9df0296870e522f"><div class="ttname"><a href="classimpala_1_1BitReader__8byte.html#a6eafe69d17a7073df9df0296870e522f">impala::BitReader_8byte::bytes_left</a></div><div class="ttdeci">int bytes_left()</div><div class="ttdef"><b>Definition:</b> <a href="bit-stream-utils_88byte_8h_source.html#l00115">bit-stream-utils.8byte.h:115</a></div></div>
<div class="ttc" id="classimpala_1_1BitWriter__8byte_html_abecb51d71d1caa9a1ebf2444f9ac4fb3"><div class="ttname"><a href="classimpala_1_1BitWriter__8byte.html#abecb51d71d1caa9a1ebf2444f9ac4fb3">impala::BitWriter_8byte::offset_</a></div><div class="ttdeci">int offset_</div><div class="ttdef"><b>Definition:</b> <a href="bit-stream-utils_88byte_8h_source.html#l00077">bit-stream-utils.8byte.h:77</a></div></div>
<div class="ttc" id="classimpala_1_1BitWriter__8byte_html_a8783bebc7f32fc05f17775a5dfb641fd"><div class="ttname"><a href="classimpala_1_1BitWriter__8byte.html#a8783bebc7f32fc05f17775a5dfb641fd">impala::BitWriter_8byte::bit_offset_</a></div><div class="ttdeci">int bit_offset_</div><div class="ttdef"><b>Definition:</b> <a href="bit-stream-utils_88byte_8h_source.html#l00078">bit-stream-utils.8byte.h:78</a></div></div>
<div class="ttc" id="classimpala_1_1BitReader__8byte_html_a046c83097fd728a8e4c1afbb3866e0a3"><div class="ttname"><a href="classimpala_1_1BitReader__8byte.html#a046c83097fd728a8e4c1afbb3866e0a3">impala::BitReader_8byte::buffer_</a></div><div class="ttdeci">uint64_t * buffer_</div><div class="ttdef"><b>Definition:</b> <a href="bit-stream-utils_88byte_8h_source.html#l00123">bit-stream-utils.8byte.h:123</a></div></div>
<div class="ttc" id="classimpala_1_1BitReader__8byte_html_ab9b53c8dfd892247bf59d34f19f10abb"><div class="ttname"><a href="classimpala_1_1BitReader__8byte.html#ab9b53c8dfd892247bf59d34f19f10abb">impala::BitReader_8byte::Align</a></div><div class="ttdeci">void Align()</div><div class="ttdoc">Advances offset_ and/or bit_offset_ to next byte boundary in buffer_. </div><div class="ttdef"><b>Definition:</b> <a href="bit-stream-utils_88byte_8inline_8h_source.html#l00130">bit-stream-utils.8byte.inline.h:130</a></div></div>
<div class="ttc" id="bit-stream-utils_88byte_8h_html"><div class="ttname"><a href="bit-stream-utils_88byte_8h.html">bit-stream-utils.8byte.h</a></div></div>
<div class="ttc" id="classimpala_1_1BitReader__8byte_html_a744617f92cd6341740019af5f4861f4c"><div class="ttname"><a href="classimpala_1_1BitReader__8byte.html#a744617f92cd6341740019af5f4861f4c">impala::BitReader_8byte::GetValue</a></div><div class="ttdeci">bool GetValue(int num_bits, T *v)</div><div class="ttdef"><b>Definition:</b> <a href="bit-stream-utils_88byte_8inline_8h_source.html#l00087">bit-stream-utils.8byte.inline.h:87</a></div></div>
<div class="ttc" id="classimpala_1_1BitUtil_html_a4808e9b65d748f9a93661abafe5792ed"><div class="ttname"><a href="classimpala_1_1BitUtil.html#a4808e9b65d748f9a93661abafe5792ed">impala::BitUtil::TrailingBits</a></div><div class="ttdeci">static uint64_t TrailingBits(uint64_t v, int num_bits)</div><div class="ttdoc">Returns the &#39;num_bits&#39; least-significant bits of &#39;v&#39;. </div><div class="ttdef"><b>Definition:</b> <a href="bit-util_8h_source.html#l00125">bit-util.h:125</a></div></div>
<div class="ttc" id="classimpala_1_1BitUtil_html_aea8660e5c51f23f4e6c3708a758e37e5"><div class="ttname"><a href="classimpala_1_1BitUtil.html#aea8660e5c51f23f4e6c3708a758e37e5">impala::BitUtil::RoundUpNumBytes</a></div><div class="ttdeci">static uint32_t RoundUpNumBytes(uint32_t bits)</div><div class="ttdef"><b>Definition:</b> <a href="bit-util_8h_source.html#l00077">bit-util.h:77</a></div></div>
<div class="ttc" id="classuint64__t_html"><div class="ttname"><a href="classuint64__t.html">uint64_t</a></div></div>
<div class="ttc" id="classimpala_1_1BitUtil_html_a372c4cce3b2fd79c710ec36d01afda07"><div class="ttname"><a href="classimpala_1_1BitUtil.html#a372c4cce3b2fd79c710ec36d01afda07">impala::BitUtil::Ceil</a></div><div class="ttdeci">static int Ceil(int value, int divisor)</div><div class="ttdoc">Returns the ceil of value/divisor. </div><div class="ttdef"><b>Definition:</b> <a href="bit-util_8h_source.html#l00032">bit-util.h:32</a></div></div>
<div class="ttc" id="classimpala_1_1BitReader__8byte_html_a5b48a90406a579ef4d1a4ba1493cffa6"><div class="ttname"><a href="classimpala_1_1BitReader__8byte.html#a5b48a90406a579ef4d1a4ba1493cffa6">impala::BitReader_8byte::bit_offset_</a></div><div class="ttdeci">int bit_offset_</div><div class="ttdef"><b>Definition:</b> <a href="bit-stream-utils_88byte_8h_source.html#l00126">bit-stream-utils.8byte.h:126</a></div></div>
<div class="ttc" id="compiler-util_8h_html_a9acc330d508b9a3b775cfdf7ce405e7d"><div class="ttname"><a href="compiler-util_8h.html#a9acc330d508b9a3b775cfdf7ce405e7d">UNLIKELY</a></div><div class="ttdeci">#define UNLIKELY(expr)</div><div class="ttdef"><b>Definition:</b> <a href="compiler-util_8h_source.html#l00033">compiler-util.h:33</a></div></div>
<div class="ttc" id="classimpala_1_1BitReader__8byte_html_ad3b3ccf8b223d4c99cf65acf64ce517d"><div class="ttname"><a href="classimpala_1_1BitReader__8byte.html#ad3b3ccf8b223d4c99cf65acf64ce517d">impala::BitReader_8byte::MAX_VLQ_BYTE_LEN</a></div><div class="ttdeci">static const int MAX_VLQ_BYTE_LEN</div><div class="ttdoc">Maximum byte length of a vlq encoded int. </div><div class="ttdef"><b>Definition:</b> <a href="bit-stream-utils_88byte_8h_source.html#l00120">bit-stream-utils.8byte.h:120</a></div></div>
<div class="ttc" id="classimpala_1_1BitWriter__8byte_html_a20114a8283837be7cd333974b4567d1c"><div class="ttname"><a href="classimpala_1_1BitWriter__8byte.html#a20114a8283837be7cd333974b4567d1c">impala::BitWriter_8byte::bytes_written</a></div><div class="ttdeci">int bytes_written() const </div><div class="ttdef"><b>Definition:</b> <a href="bit-stream-utils_88byte_8h_source.html#l00051">bit-stream-utils.8byte.h:51</a></div></div>
<div class="ttc" id="classimpala_1_1BitReader__8byte_html_aa3f8a1cf81ec0e6b4324c4ecae6589a9"><div class="ttname"><a href="classimpala_1_1BitReader__8byte.html#aa3f8a1cf81ec0e6b4324c4ecae6589a9">impala::BitReader_8byte::GetAligned</a></div><div class="ttdeci">bool GetAligned(int num_bits, T *v)</div><div class="ttdef"><b>Definition:</b> <a href="bit-stream-utils_88byte_8inline_8h_source.html#l00106">bit-stream-utils.8byte.inline.h:106</a></div></div>
<div class="ttc" id="classimpala_1_1BitWriter__8byte_html_ab0050001cb618e8fe4d3f734ebb95e89"><div class="ttname"><a href="classimpala_1_1BitWriter__8byte.html#ab0050001cb618e8fe4d3f734ebb95e89">impala::BitWriter_8byte::buffer_</a></div><div class="ttdeci">uint64_t * buffer_</div><div class="ttdef"><b>Definition:</b> <a href="bit-stream-utils_88byte_8h_source.html#l00075">bit-stream-utils.8byte.h:75</a></div></div>
<div class="ttc" id="classimpala_1_1BitReader__8byte_html_a28d08fefbf6c469bca1387375dce9221"><div class="ttname"><a href="classimpala_1_1BitReader__8byte.html#a28d08fefbf6c469bca1387375dce9221">impala::BitReader_8byte::GetVlqInt</a></div><div class="ttdeci">bool GetVlqInt(int32_t *v)</div><div class="ttdef"><b>Definition:</b> <a href="bit-stream-utils_88byte_8inline_8h_source.html#l00116">bit-stream-utils.8byte.inline.h:116</a></div></div>
<div class="ttc" id="classimpala_1_1BitWriter__8byte_html_ac9f4753bd5eab5c6a554657876b3fd32"><div class="ttname"><a href="classimpala_1_1BitWriter__8byte.html#ac9f4753bd5eab5c6a554657876b3fd32">impala::BitWriter_8byte::GetNextBytePtr</a></div><div class="ttdeci">uint8_t * GetNextBytePtr(int num_bytes=1)</div><div class="ttdef"><b>Definition:</b> <a href="bit-stream-utils_88byte_8inline_8h_source.html#l00045">bit-stream-utils.8byte.inline.h:45</a></div></div>
<div class="ttc" id="classimpala_1_1BitWriter__8byte_html_ab1f4addf073b34184618ffb8dc521a94"><div class="ttname"><a href="classimpala_1_1BitWriter__8byte.html#ab1f4addf073b34184618ffb8dc521a94">impala::BitWriter_8byte::max_bytes_</a></div><div class="ttdeci">int max_bytes_</div><div class="ttdef"><b>Definition:</b> <a href="bit-stream-utils_88byte_8h_source.html#l00076">bit-stream-utils.8byte.h:76</a></div></div>
<div class="ttc" id="classimpala_1_1BitWriter__8byte_html_a1e6cdd684a21243e3a1733c2312cedf2"><div class="ttname"><a href="classimpala_1_1BitWriter__8byte.html#a1e6cdd684a21243e3a1733c2312cedf2">impala::BitWriter_8byte::PutAligned</a></div><div class="ttdeci">bool PutAligned(T v, int num_bits)</div><div class="ttdoc">Writes v to the next aligned byte. </div><div class="ttdef"><b>Definition:</b> <a href="bit-stream-utils_88byte_8inline_8h_source.html#l00065">bit-stream-utils.8byte.inline.h:65</a></div></div>
<div class="ttc" id="classimpala_1_1BitWriter__8byte_html_a6057d22ba0fafddf4caea3f190bac7a3"><div class="ttname"><a href="classimpala_1_1BitWriter__8byte.html#a6057d22ba0fafddf4caea3f190bac7a3">impala::BitWriter_8byte::PutValue</a></div><div class="ttdeci">bool PutValue(uint64_t v, int num_bits)</div><div class="ttdef"><b>Definition:</b> <a href="bit-stream-utils_88byte_8inline_8h_source.html#l00023">bit-stream-utils.8byte.inline.h:23</a></div></div>
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