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<li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_58b01e52e53886b8d78ab5060a2cd2bd.html">kudu</a></li><li class="navelem"><a class="el" href="dir_e8a2e446cf73a5a1ae0ad6a5a21b6d03.html">util</a></li> </ul>
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<div class="title">slice.h</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">// Copyright (c) 2011 The LevelDB Authors. All rights reserved.</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">// Use of this source code is governed by a BSD-style license that can be</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">// found in the LICENSE file. See the AUTHORS file for names of contributors.</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;</div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="preprocessor">#ifndef KUDU_UTIL_SLICE_H_</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="preprocessor">#define KUDU_UTIL_SLICE_H_</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;</div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment">// NOTE: using stdint.h instead of cstdint because this file is supposed</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment">// to be processed by a compiler lacking C++11 support.</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &lt;stdint.h&gt;</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;</div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor">#include &lt;cassert&gt;</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor">#include &lt;cstddef&gt;</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="preprocessor">#include &lt;cstring&gt;</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="preprocessor">#include &lt;iosfwd&gt;</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor">#include &lt;map&gt;</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="preprocessor">#include &lt;string&gt;</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">#ifdef KUDU_HEADERS_USE_RICH_SLICE</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="preprocessor">#include &quot;kudu/gutil/strings/fastmem.h&quot;</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor">#include &quot;kudu/gutil/strings/stringpiece.h&quot;</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#include &quot;kudu/util/faststring.h&quot;</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="preprocessor">#ifdef KUDU_HEADERS_NO_STUBS</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="preprocessor">#include &quot;kudu/gutil/port.h&quot;</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="preprocessor">#include &quot;kudu/util/kudu_export.h&quot;</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacekudu.html">kudu</a> {</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="keyword">class </span>Status;</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;</div><div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="classkudu_1_1Slice.html"> 50</a></span>&#160;<span class="keyword">class </span>KUDU_EXPORT <a class="code" href="classkudu_1_1Slice.html">Slice</a> {</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keyword">public</span>:</div><div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="classkudu_1_1Slice.html#aaee66c59ee434349680679bdf0462b66"> 53</a></span>&#160; <a class="code" href="classkudu_1_1Slice.html#aaee66c59ee434349680679bdf0462b66">Slice</a>() : data_(reinterpret_cast&lt;const uint8_t *&gt;(<span class="stringliteral">&quot;&quot;</span>)),</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; size_(0) { }</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;</div><div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="classkudu_1_1Slice.html#a904b8732b247676c52cbd9147b34c54c"> 62</a></span>&#160; <a class="code" href="classkudu_1_1Slice.html#a904b8732b247676c52cbd9147b34c54c">Slice</a>(<span class="keyword">const</span> uint8_t* d, <span class="keywordtype">size_t</span> n) : data_(d), size_(n) { }</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;</div><div class="line"><a name="l00070"></a><span class="lineno"><a class="line" href="classkudu_1_1Slice.html#a9cb396203dd2c589e7d4f10bd80461d5"> 70</a></span>&#160; <a class="code" href="classkudu_1_1Slice.html#a9cb396203dd2c589e7d4f10bd80461d5">Slice</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* d, <span class="keywordtype">size_t</span> n) :</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; data_(reinterpret_cast&lt;const uint8_t *&gt;(d)),</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; size_(n) { }</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;</div><div class="line"><a name="l00078"></a><span class="lineno"><a class="line" href="classkudu_1_1Slice.html#a13838e07b6dcea1895a774ab1ba62bdd"> 78</a></span>&#160; <a class="code" href="classkudu_1_1Slice.html#a13838e07b6dcea1895a774ab1ba62bdd">Slice</a>(<span class="keyword">const</span> std::string&amp; s) : <span class="comment">// NOLINT(runtime/explicit)</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; data_(reinterpret_cast&lt;const uint8_t *&gt;(s.data())),</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; size_(s.size()) { }</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;</div><div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="classkudu_1_1Slice.html#ae8c6057eea15f8136e62255fd766e345"> 86</a></span>&#160; <a class="code" href="classkudu_1_1Slice.html#ae8c6057eea15f8136e62255fd766e345">Slice</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* s) : <span class="comment">// NOLINT(runtime/explicit)</span></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; data_(reinterpret_cast&lt;const uint8_t *&gt;(s)),</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; size_(strlen(s)) { }</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"> 90</span>&#160;<span class="preprocessor">#ifdef KUDU_HEADERS_USE_RICH_SLICE</span></div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <a class="code" href="classkudu_1_1Slice.html">Slice</a>(<span class="keyword">const</span> faststring &amp;s) <span class="comment">// NOLINT(runtime/explicit)</span></div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; : data_(s.data()),</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; size_(s.size()) {</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;</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; <a class="code" href="classkudu_1_1Slice.html">Slice</a>(<span class="keyword">const</span> StringPiece&amp; s) <span class="comment">// NOLINT(runtime/explicit)</span></div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; : data_(reinterpret_cast&lt;const uint8_t*&gt;(s.data())),</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; size_(s.size()) {</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; }</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;</div><div class="line"><a name="l00113"></a><span class="lineno"><a class="line" href="classkudu_1_1Slice.html#aa81f3cd3f43d72892397734399bed06d"> 113</a></span>&#160; <span class="keyword">const</span> uint8_t* <a class="code" href="classkudu_1_1Slice.html#aa81f3cd3f43d72892397734399bed06d">data</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> data_; }</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;</div><div class="line"><a name="l00116"></a><span class="lineno"><a class="line" href="classkudu_1_1Slice.html#a2771156d34daa166067b8d319ad7d164"> 116</a></span>&#160; uint8_t *<a class="code" href="classkudu_1_1Slice.html#a2771156d34daa166067b8d319ad7d164">mutable_data</a>() { <span class="keywordflow">return</span> <span class="keyword">const_cast&lt;</span>uint8_t *<span class="keyword">&gt;</span>(data_); }</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;</div><div class="line"><a name="l00119"></a><span class="lineno"><a class="line" href="classkudu_1_1Slice.html#aec1c45dc306dce4a0977fff8eabdb433"> 119</a></span>&#160; <span class="keywordtype">size_t</span> <a class="code" href="classkudu_1_1Slice.html#aec1c45dc306dce4a0977fff8eabdb433">size</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> size_; }</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;</div><div class="line"><a name="l00122"></a><span class="lineno"><a class="line" href="classkudu_1_1Slice.html#a072af6f4ad1aef904c5f683107d0e523"> 122</a></span>&#160; <span class="keywordtype">bool</span> <a class="code" href="classkudu_1_1Slice.html#a072af6f4ad1aef904c5f683107d0e523">empty</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> size_ == 0; }</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;</div><div class="line"><a name="l00129"></a><span class="lineno"><a class="line" href="classkudu_1_1Slice.html#a4c8090f1904ecbdc8e2ca6a4bf79fbff"> 129</a></span>&#160; <span class="keyword">const</span> uint8_t &amp;<a class="code" href="classkudu_1_1Slice.html#a4c8090f1904ecbdc8e2ca6a4bf79fbff">operator[]</a>(<span class="keywordtype">size_t</span> n)<span class="keyword"> const </span>{</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; assert(n &lt; size());</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; <span class="keywordflow">return</span> data_[n];</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="l00135"></a><span class="lineno"><a class="line" href="classkudu_1_1Slice.html#afb914c0769f019a7c2f28b755cba5eb5"> 135</a></span>&#160; <span class="keywordtype">void</span> <a class="code" href="classkudu_1_1Slice.html#afb914c0769f019a7c2f28b755cba5eb5">clear</a>() {</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; data_ = <span class="keyword">reinterpret_cast&lt;</span><span class="keyword">const </span>uint8_t *<span class="keyword">&gt;</span>(<span class="stringliteral">&quot;&quot;</span>);</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; size_ = 0;</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="l00149"></a><span class="lineno"><a class="line" href="classkudu_1_1Slice.html#a00f5d310f9ebf17c198cf3feb69c3842"> 149</a></span>&#160; <span class="keywordtype">void</span> <a class="code" href="classkudu_1_1Slice.html#a00f5d310f9ebf17c198cf3feb69c3842">remove_prefix</a>(<span class="keywordtype">size_t</span> n) {</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; assert(n &lt;= size());</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; data_ += n;</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; size_ -= n;</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;</div><div class="line"><a name="l00164"></a><span class="lineno"><a class="line" href="classkudu_1_1Slice.html#a20f1c8e91ff0209e5c8f86766ef63d44"> 164</a></span>&#160; <span class="keywordtype">void</span> <a class="code" href="classkudu_1_1Slice.html#a20f1c8e91ff0209e5c8f86766ef63d44">truncate</a>(<span class="keywordtype">size_t</span> n) {</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; assert(n &lt;= size());</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; size_ = n;</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160; }</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160;</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; <a class="code" href="classkudu_1_1Status.html">Status</a> check_size(<span class="keywordtype">size_t</span> expected_size) <span class="keyword">const</span>;</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160;</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; std::string ToString() <span class="keyword">const</span>;</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160;</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; std::string ToDebugString(<span class="keywordtype">size_t</span> max_len = 0) <span class="keyword">const</span>;</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160;</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; <span class="keywordtype">int</span> compare(<span class="keyword">const</span> <a class="code" href="classkudu_1_1Slice.html">Slice</a>&amp; b) <span class="keyword">const</span>;</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160;</div><div class="line"><a name="l00200"></a><span class="lineno"><a class="line" href="classkudu_1_1Slice.html#ab1919baa9e854b50b938c35bd1686c9d"> 200</a></span>&#160; <span class="keywordtype">bool</span> <a class="code" href="classkudu_1_1Slice.html#ab1919baa9e854b50b938c35bd1686c9d">starts_with</a>(<span class="keyword">const</span> <a class="code" href="classkudu_1_1Slice.html">Slice</a>&amp; x)<span class="keyword"> const </span>{</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; <span class="keywordflow">return</span> ((size_ &gt;= x.size_) &amp;&amp;</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160; (MemEqual(data_, x.data_, x.size_)));</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; }</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160;</div><div class="line"><a name="l00206"></a><span class="lineno"><a class="line" href="structkudu_1_1Slice_1_1Comparator.html"> 206</a></span>&#160; <span class="keyword">struct </span><a class="code" href="structkudu_1_1Slice_1_1Comparator.html">Comparator</a> {</div><div class="line"><a name="l00214"></a><span class="lineno"><a class="line" href="structkudu_1_1Slice_1_1Comparator.html#addca89640bb164bc8801414fd7d9e9f5"> 214</a></span>&#160; <span class="keywordtype">bool</span> <a class="code" href="structkudu_1_1Slice_1_1Comparator.html#addca89640bb164bc8801414fd7d9e9f5">operator()</a>(<span class="keyword">const</span> <a class="code" href="classkudu_1_1Slice.html">Slice</a>&amp; a, <span class="keyword">const</span> <a class="code" href="classkudu_1_1Slice.html">Slice</a>&amp; b)<span class="keyword"> const </span>{</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160; <span class="keywordflow">return</span> a.<a class="code" href="classkudu_1_1Slice.html#a6e5fabfcb85d2076297aa3c24ba448c2">compare</a>(b) &lt; 0;</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; }</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; };</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160;</div><div class="line"><a name="l00225"></a><span class="lineno"><a class="line" href="classkudu_1_1Slice.html#a4bb1c9fe13873623b5a5a118830b1806"> 225</a></span>&#160; <span class="keywordtype">void</span> <a class="code" href="classkudu_1_1Slice.html#a4bb1c9fe13873623b5a5a118830b1806">relocate</a>(uint8_t* d) {</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160; <span class="keywordflow">if</span> (data_ != d) {</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160; memcpy(d, data_, size_);</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160; data_ = d;</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160; }</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160; }</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160;</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160; <span class="keyword">private</span>:</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>&#160; <span class="keyword">friend</span> <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> <a class="code" href="classkudu_1_1Slice.html">Slice</a>&amp; x, <span class="keyword">const</span> <a class="code" href="classkudu_1_1Slice.html">Slice</a>&amp; y);</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160;</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160; <span class="keyword">static</span> <span class="keywordtype">bool</span> MemEqual(<span class="keyword">const</span> <span class="keywordtype">void</span>* a, <span class="keyword">const</span> <span class="keywordtype">void</span>* b, <span class="keywordtype">size_t</span> n) {</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160;<span class="preprocessor">#ifdef KUDU_HEADERS_USE_RICH_SLICE</span></div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160; <span class="keywordflow">return</span> strings::memeq(a, b, n);</div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160;<span class="preprocessor">#else</span></div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160; <span class="keywordflow">return</span> memcmp(a, b, n) == 0;</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160; }</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160;</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160; <span class="keyword">static</span> <span class="keywordtype">int</span> MemCompare(<span class="keyword">const</span> <span class="keywordtype">void</span>* a, <span class="keyword">const</span> <span class="keywordtype">void</span>* b, <span class="keywordtype">size_t</span> n) {</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160;<span class="preprocessor">#ifdef KUDU_HEADERS_USE_RICH_SLICE</span></div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160; <span class="keywordflow">return</span> strings::fastmemcmp_inlined(a, b, n);</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160;<span class="preprocessor">#else</span></div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160; <span class="keywordflow">return</span> memcmp(a, b, n);</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160; }</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&#160;</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160; <span class="keyword">const</span> uint8_t* data_;</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160; <span class="keywordtype">size_t</span> size_;</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>&#160;</div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>&#160; <span class="comment">// Intentionally copyable</span></div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>&#160;};</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160;</div><div class="line"><a name="l00264"></a><span class="lineno"><a class="line" href="classkudu_1_1Slice.html#a1323493265790d022203af0d8b31fd9c"> 264</a></span>&#160;<span class="keyword">inline</span> <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> <a class="code" href="classkudu_1_1Slice.html">Slice</a>&amp; x, <span class="keyword">const</span> <a class="code" href="classkudu_1_1Slice.html">Slice</a>&amp; y) {</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160; <span class="keywordflow">return</span> ((x.<a class="code" href="classkudu_1_1Slice.html#aec1c45dc306dce4a0977fff8eabdb433">size</a>() == y.<a class="code" href="classkudu_1_1Slice.html#aec1c45dc306dce4a0977fff8eabdb433">size</a>()) &amp;&amp;</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160; (Slice::MemEqual(x.<a class="code" href="classkudu_1_1Slice.html#aa81f3cd3f43d72892397734399bed06d">data</a>(), y.<a class="code" href="classkudu_1_1Slice.html#aa81f3cd3f43d72892397734399bed06d">data</a>(), x.<a class="code" href="classkudu_1_1Slice.html#aec1c45dc306dce4a0977fff8eabdb433">size</a>())));</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>&#160;}</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160;</div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> <a class="code" href="classkudu_1_1Slice.html">Slice</a>&amp; x, <span class="keyword">const</span> <a class="code" href="classkudu_1_1Slice.html">Slice</a>&amp; y) {</div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>&#160; <span class="keywordflow">return</span> !(x == y);</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>&#160;}</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>&#160;</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>&#160;<span class="keyword">inline</span> std::ostream&amp; operator&lt;&lt;(std::ostream&amp; o, <span class="keyword">const</span> <a class="code" href="classkudu_1_1Slice.html">Slice</a>&amp; s) {</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span>&#160; <span class="keywordflow">return</span> o &lt;&lt; s.<a class="code" href="classkudu_1_1Slice.html#ad2f077da829e931314a753bc6b76fbf7">ToDebugString</a>(16); <span class="comment">// should be enough for anyone...</span></div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>&#160;}</div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span>&#160;</div><div class="line"><a name="l00291"></a><span class="lineno"><a class="line" href="classkudu_1_1Slice.html#a6e5fabfcb85d2076297aa3c24ba448c2"> 291</a></span>&#160;<span class="keyword">inline</span> <span class="keywordtype">int</span> <a class="code" href="classkudu_1_1Slice.html#a6e5fabfcb85d2076297aa3c24ba448c2">Slice::compare</a>(<span class="keyword">const</span> <a class="code" href="classkudu_1_1Slice.html">Slice</a>&amp; b)<span class="keyword"> const </span>{</div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> min_len = (size_ &lt; b.size_) ? size_ : b.size_;</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>&#160; <span class="keywordtype">int</span> r = MemCompare(data_, b.data_, min_len);</div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>&#160; <span class="keywordflow">if</span> (r == 0) {</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span>&#160; <span class="keywordflow">if</span> (size_ &lt; b.size_) r = -1;</div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span>&#160; <span class="keywordflow">else</span> <span class="keywordflow">if</span> (size_ &gt; b.size_) r = +1;</div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span>&#160; }</div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>&#160; <span class="keywordflow">return</span> r;</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>&#160;}</div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span>&#160;</div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span>&#160;<span class="comment">// We don&#39;t run TSAN on this function because it makes it really slow and causes some</span></div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span>&#160;<span class="comment">// test timeouts. This is only used on local buffers anyway, so we don&#39;t lose much</span></div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span>&#160;<span class="comment">// by not checking it.</span></div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>&#160;<span class="preprocessor">#ifdef KUDU_HEADERS_NO_STUBS</span></div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span>&#160;ATTRIBUTE_NO_SANITIZE_THREAD</div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span>&#160;<span class="keywordtype">bool</span> IsAllZeros(<span class="keyword">const</span> <a class="code" href="classkudu_1_1Slice.html">Slice</a>&amp; s);</div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span>&#160;</div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00325"></a><span class="lineno"><a class="line" href="structkudu_1_1SliceMap.html"> 325</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structkudu_1_1SliceMap.html">SliceMap</a> {</div><div class="line"><a name="l00327"></a><span class="lineno"><a class="line" href="structkudu_1_1SliceMap.html#ac97e49d0aa50ae49f34ab3bbd95ea5e6"> 327</a></span>&#160; <span class="keyword">typedef</span> std::map&lt;Slice, T, Slice::Comparator&gt; <a class="code" href="structkudu_1_1SliceMap.html#ac97e49d0aa50ae49f34ab3bbd95ea5e6">type</a>;</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span>&#160;};</div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span>&#160;</div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span>&#160;} <span class="comment">// namespace kudu</span></div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span>&#160;</div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span>&#160;<span class="preprocessor">#endif // KUDU_UTIL_SLICE_H_</span></div><div class="ttc" id="classkudu_1_1Slice_html_a6e5fabfcb85d2076297aa3c24ba448c2"><div class="ttname"><a href="classkudu_1_1Slice.html#a6e5fabfcb85d2076297aa3c24ba448c2">kudu::Slice::compare</a></div><div class="ttdeci">int compare(const Slice &amp;b) const</div><div class="ttdef"><b>Definition:</b> slice.h:291</div></div>
<div class="ttc" id="classkudu_1_1Slice_html_aec1c45dc306dce4a0977fff8eabdb433"><div class="ttname"><a href="classkudu_1_1Slice.html#aec1c45dc306dce4a0977fff8eabdb433">kudu::Slice::size</a></div><div class="ttdeci">size_t size() const</div><div class="ttdef"><b>Definition:</b> slice.h:119</div></div>
<div class="ttc" id="classkudu_1_1Status_html"><div class="ttname"><a href="classkudu_1_1Status.html">kudu::Status</a></div><div class="ttdoc">A representation of an operation&amp;#39;s outcome. </div><div class="ttdef"><b>Definition:</b> status.h:145</div></div>
<div class="ttc" id="namespacekudu_html"><div class="ttname"><a href="namespacekudu.html">kudu</a></div><div class="ttdef"><b>Definition:</b> callbacks.h:28</div></div>
<div class="ttc" id="classkudu_1_1Slice_html_a4bb1c9fe13873623b5a5a118830b1806"><div class="ttname"><a href="classkudu_1_1Slice.html#a4bb1c9fe13873623b5a5a118830b1806">kudu::Slice::relocate</a></div><div class="ttdeci">void relocate(uint8_t *d)</div><div class="ttdef"><b>Definition:</b> slice.h:225</div></div>
<div class="ttc" id="classkudu_1_1Slice_html_ae8c6057eea15f8136e62255fd766e345"><div class="ttname"><a href="classkudu_1_1Slice.html#ae8c6057eea15f8136e62255fd766e345">kudu::Slice::Slice</a></div><div class="ttdeci">Slice(const char *s)</div><div class="ttdef"><b>Definition:</b> slice.h:86</div></div>
<div class="ttc" id="structkudu_1_1SliceMap_html_ac97e49d0aa50ae49f34ab3bbd95ea5e6"><div class="ttname"><a href="structkudu_1_1SliceMap.html#ac97e49d0aa50ae49f34ab3bbd95ea5e6">kudu::SliceMap::type</a></div><div class="ttdeci">std::map&lt; Slice, T, Slice::Comparator &gt; type</div><div class="ttdoc">A handy typedef for the slice map with appropriate comparison operator. </div><div class="ttdef"><b>Definition:</b> slice.h:327</div></div>
<div class="ttc" id="classkudu_1_1Slice_html_a072af6f4ad1aef904c5f683107d0e523"><div class="ttname"><a href="classkudu_1_1Slice.html#a072af6f4ad1aef904c5f683107d0e523">kudu::Slice::empty</a></div><div class="ttdeci">bool empty() const</div><div class="ttdef"><b>Definition:</b> slice.h:122</div></div>
<div class="ttc" id="classkudu_1_1Slice_html_afb914c0769f019a7c2f28b755cba5eb5"><div class="ttname"><a href="classkudu_1_1Slice.html#afb914c0769f019a7c2f28b755cba5eb5">kudu::Slice::clear</a></div><div class="ttdeci">void clear()</div><div class="ttdoc">Change this slice to refer to an empty array. </div><div class="ttdef"><b>Definition:</b> slice.h:135</div></div>
<div class="ttc" id="structkudu_1_1Slice_1_1Comparator_html_addca89640bb164bc8801414fd7d9e9f5"><div class="ttname"><a href="structkudu_1_1Slice_1_1Comparator.html#addca89640bb164bc8801414fd7d9e9f5">kudu::Slice::Comparator::operator()</a></div><div class="ttdeci">bool operator()(const Slice &amp;a, const Slice &amp;b) const</div><div class="ttdef"><b>Definition:</b> slice.h:214</div></div>
<div class="ttc" id="structkudu_1_1Slice_1_1Comparator_html"><div class="ttname"><a href="structkudu_1_1Slice_1_1Comparator.html">kudu::Slice::Comparator</a></div><div class="ttdoc">Comparator struct, useful for ordered collections (like STL maps). </div><div class="ttdef"><b>Definition:</b> slice.h:206</div></div>
<div class="ttc" id="classkudu_1_1Slice_html_a20f1c8e91ff0209e5c8f86766ef63d44"><div class="ttname"><a href="classkudu_1_1Slice.html#a20f1c8e91ff0209e5c8f86766ef63d44">kudu::Slice::truncate</a></div><div class="ttdeci">void truncate(size_t n)</div><div class="ttdef"><b>Definition:</b> slice.h:164</div></div>
<div class="ttc" id="structkudu_1_1SliceMap_html"><div class="ttname"><a href="structkudu_1_1SliceMap.html">kudu::SliceMap</a></div><div class="ttdoc">STL map whose keys are Slices. </div><div class="ttdef"><b>Definition:</b> slice.h:325</div></div>
<div class="ttc" id="classkudu_1_1Slice_html"><div class="ttname"><a href="classkudu_1_1Slice.html">kudu::Slice</a></div><div class="ttdoc">A wrapper around externally allocated data. </div><div class="ttdef"><b>Definition:</b> slice.h:50</div></div>
<div class="ttc" id="classkudu_1_1Slice_html_a904b8732b247676c52cbd9147b34c54c"><div class="ttname"><a href="classkudu_1_1Slice.html#a904b8732b247676c52cbd9147b34c54c">kudu::Slice::Slice</a></div><div class="ttdeci">Slice(const uint8_t *d, size_t n)</div><div class="ttdef"><b>Definition:</b> slice.h:62</div></div>
<div class="ttc" id="classkudu_1_1Slice_html_a9cb396203dd2c589e7d4f10bd80461d5"><div class="ttname"><a href="classkudu_1_1Slice.html#a9cb396203dd2c589e7d4f10bd80461d5">kudu::Slice::Slice</a></div><div class="ttdeci">Slice(const char *d, size_t n)</div><div class="ttdef"><b>Definition:</b> slice.h:70</div></div>
<div class="ttc" id="classkudu_1_1Slice_html_a2771156d34daa166067b8d319ad7d164"><div class="ttname"><a href="classkudu_1_1Slice.html#a2771156d34daa166067b8d319ad7d164">kudu::Slice::mutable_data</a></div><div class="ttdeci">uint8_t * mutable_data()</div><div class="ttdef"><b>Definition:</b> slice.h:116</div></div>
<div class="ttc" id="classkudu_1_1Slice_html_a00f5d310f9ebf17c198cf3feb69c3842"><div class="ttname"><a href="classkudu_1_1Slice.html#a00f5d310f9ebf17c198cf3feb69c3842">kudu::Slice::remove_prefix</a></div><div class="ttdeci">void remove_prefix(size_t n)</div><div class="ttdef"><b>Definition:</b> slice.h:149</div></div>
<div class="ttc" id="classkudu_1_1Slice_html_a13838e07b6dcea1895a774ab1ba62bdd"><div class="ttname"><a href="classkudu_1_1Slice.html#a13838e07b6dcea1895a774ab1ba62bdd">kudu::Slice::Slice</a></div><div class="ttdeci">Slice(const std::string &amp;s)</div><div class="ttdef"><b>Definition:</b> slice.h:78</div></div>
<div class="ttc" id="classkudu_1_1Slice_html_aa81f3cd3f43d72892397734399bed06d"><div class="ttname"><a href="classkudu_1_1Slice.html#aa81f3cd3f43d72892397734399bed06d">kudu::Slice::data</a></div><div class="ttdeci">const uint8_t * data() const</div><div class="ttdef"><b>Definition:</b> slice.h:113</div></div>
<div class="ttc" id="classkudu_1_1Slice_html_ad2f077da829e931314a753bc6b76fbf7"><div class="ttname"><a href="classkudu_1_1Slice.html#ad2f077da829e931314a753bc6b76fbf7">kudu::Slice::ToDebugString</a></div><div class="ttdeci">std::string ToDebugString(size_t max_len=0) const</div></div>
<div class="ttc" id="classkudu_1_1Slice_html_aaee66c59ee434349680679bdf0462b66"><div class="ttname"><a href="classkudu_1_1Slice.html#aaee66c59ee434349680679bdf0462b66">kudu::Slice::Slice</a></div><div class="ttdeci">Slice()</div><div class="ttdoc">Create an empty slice. </div><div class="ttdef"><b>Definition:</b> slice.h:53</div></div>
<div class="ttc" id="classkudu_1_1Slice_html_ab1919baa9e854b50b938c35bd1686c9d"><div class="ttname"><a href="classkudu_1_1Slice.html#ab1919baa9e854b50b938c35bd1686c9d">kudu::Slice::starts_with</a></div><div class="ttdeci">bool starts_with(const Slice &amp;x) const</div><div class="ttdef"><b>Definition:</b> slice.h:200</div></div>
<div class="ttc" id="classkudu_1_1Slice_html_a4c8090f1904ecbdc8e2ca6a4bf79fbff"><div class="ttname"><a href="classkudu_1_1Slice.html#a4c8090f1904ecbdc8e2ca6a4bf79fbff">kudu::Slice::operator[]</a></div><div class="ttdeci">const uint8_t &amp; operator[](size_t n) const</div><div class="ttdef"><b>Definition:</b> slice.h:129</div></div>
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