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| <div class="title">string-search-sse.h</div> </div> |
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| <div class="contents"> |
| <a href="string-search-sse_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright (c) 2012 Cloudera, Inc. All rights reserved.</span></div> |
| <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div> |
| <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="preprocessor">#ifndef IMPALA_EXPERIMENTS_STRING_SEARCH_SSE_H</span></div> |
| <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor"></span><span class="preprocessor">#define IMPALA_EXPERIMENTS_STRING_SEARCH_SSE_H</span></div> |
| <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor"></span></div> |
| <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include "<a class="code" href="compiler-util_8h.html">common/compiler-util.h</a>"</span></div> |
| <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include "<a class="code" href="logging_8h.html">common/logging.h</a>"</span></div> |
| <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include "<a class="code" href="string-value_8h.html">runtime/string-value.h</a>"</span></div> |
| <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> </div> |
| <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="keyword">namespace </span>impala {</div> |
| <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> </div> |
| <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// This class implements strstr for non-null terminated strings. It wraps the</span></div> |
| <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// standard strstr function (which is sse4 optimized).</span></div> |
| <div class="line"><a name="l00018"></a><span class="lineno"><a class="line" href="classimpala_1_1StringSearchSSE.html"> 18</a></span> <span class="comment"></span><span class="keyword">class </span><a class="code" href="classimpala_1_1StringSearchSSE.html">StringSearchSSE</a> {</div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  <span class="keyword">public</span>:</div> |
| <div class="line"><a name="l00025"></a><span class="lineno"><a class="line" href="classimpala_1_1StringSearchSSE.html#aceed3032b366f10f4b95bbdd2ecccc0d"> 25</a></span>  <a class="code" href="classimpala_1_1StringSearchSSE.html#aceed3032b366f10f4b95bbdd2ecccc0d">StringSearchSSE</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* needle) :</div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <a class="code" href="classimpala_1_1StringSearchSSE.html#ac6bb7a0da62ac1ccf66cf8be1918a0c4">needle_str_val_</a>(NULL), <a class="code" href="classimpala_1_1StringSearchSSE.html#a0e04f037b0baabf6e7b518a462943ea4">needle_cstr_</a>(needle) {</div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <a class="code" href="classimpala_1_1StringSearchSSE.html#aaf2629647b98b116c9aee3b9e94264e2">needle_len_</a> = strlen(needle);</div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  }</div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div> |
| <div class="line"><a name="l00032"></a><span class="lineno"><a class="line" href="classimpala_1_1StringSearchSSE.html#ac198cd994557789995aa1ef04951788e"> 32</a></span>  <a class="code" href="classimpala_1_1StringSearchSSE.html#ac198cd994557789995aa1ef04951788e">StringSearchSSE</a>(<span class="keyword">const</span> <a class="code" href="structimpala_1_1StringValue.html">StringValue</a>* needle) :</div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <a class="code" href="classimpala_1_1StringSearchSSE.html#ac6bb7a0da62ac1ccf66cf8be1918a0c4">needle_str_val_</a>(needle), <a class="code" href="classimpala_1_1StringSearchSSE.html#a0e04f037b0baabf6e7b518a462943ea4">needle_cstr_</a>(NULL) {</div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <a class="code" href="classimpala_1_1StringSearchSSE.html#aaf2629647b98b116c9aee3b9e94264e2">needle_len_</a> = needle-><a class="code" href="structimpala_1_1StringValue.html#ab71e42890598d9b239cac64485db276d">len</a>;</div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  }</div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div> |
| <div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="classimpala_1_1StringSearchSSE.html#a58a85a02099f8998eb81659e88683905"> 37</a></span>  <a class="code" href="classimpala_1_1StringSearchSSE.html#a58a85a02099f8998eb81659e88683905">StringSearchSSE</a>() : <a class="code" href="classimpala_1_1StringSearchSSE.html#ac6bb7a0da62ac1ccf66cf8be1918a0c4">needle_str_val_</a>(NULL), <a class="code" href="classimpala_1_1StringSearchSSE.html#a0e04f037b0baabf6e7b518a462943ea4">needle_cstr_</a>(NULL), <a class="code" href="classimpala_1_1StringSearchSSE.html#aaf2629647b98b116c9aee3b9e94264e2">needle_len_</a>(0) {}</div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div> |
| <div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="classimpala_1_1StringSearchSSE.html#ac22795d8ec86eec8604ad078d87c5ab3"> 43</a></span>  <span class="keywordtype">int</span> <a class="code" href="classimpala_1_1StringSearchSSE.html#ac22795d8ec86eec8604ad078d87c5ab3">Search</a>(<span class="keyword">const</span> <a class="code" href="structimpala_1_1StringValue.html">StringValue</a>& haystack)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="comment">// Edge cases</span></div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">if</span> (<a class="code" href="compiler-util_8h.html#a9acc330d508b9a3b775cfdf7ce405e7d">UNLIKELY</a>(haystack.<a class="code" href="structimpala_1_1StringValue.html#ab71e42890598d9b239cac64485db276d">len</a> == 0 && <a class="code" href="classimpala_1_1StringSearchSSE.html#aaf2629647b98b116c9aee3b9e94264e2">needle_len_</a> == 0)) <span class="keywordflow">return</span> 0;</div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">if</span> (<a class="code" href="compiler-util_8h.html#a9acc330d508b9a3b775cfdf7ce405e7d">UNLIKELY</a>(haystack.<a class="code" href="structimpala_1_1StringValue.html#ab71e42890598d9b239cac64485db276d">len</a> == 0)) <span class="keywordflow">return</span> -1;</div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">if</span> (<a class="code" href="compiler-util_8h.html#a9acc330d508b9a3b775cfdf7ce405e7d">UNLIKELY</a>(<a class="code" href="classimpala_1_1StringSearchSSE.html#aaf2629647b98b116c9aee3b9e94264e2">needle_len_</a> == 0)) <span class="keywordflow">return</span> 0;</div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">if</span> (<a class="code" href="compiler-util_8h.html#a9acc330d508b9a3b775cfdf7ce405e7d">UNLIKELY</a>(haystack.<a class="code" href="structimpala_1_1StringValue.html#ab71e42890598d9b239cac64485db276d">len</a> < <a class="code" href="classimpala_1_1StringSearchSSE.html#aaf2629647b98b116c9aee3b9e94264e2">needle_len_</a>)) <span class="keywordflow">return</span> -1;</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordtype">int</span> result = -1;</div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="comment">// temporarily null terminated input string</span></div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordtype">char</span> last_char_haystack = haystack.<a class="code" href="structimpala_1_1StringValue.html#a17f088f03fd1f7b017df20f58f71fe13">ptr</a>[haystack.<a class="code" href="structimpala_1_1StringValue.html#ab71e42890598d9b239cac64485db276d">len</a> - 1];</div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  haystack.<a class="code" href="structimpala_1_1StringValue.html#a17f088f03fd1f7b017df20f58f71fe13">ptr</a>[haystack.<a class="code" href="structimpala_1_1StringValue.html#ab71e42890598d9b239cac64485db276d">len</a> - 1] = <span class="charliteral">'\0'</span>;</div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="comment">// Use strchr if needle_len_ is 1</span></div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">if</span> (<a class="code" href="classimpala_1_1StringSearchSSE.html#aaf2629647b98b116c9aee3b9e94264e2">needle_len_</a> == 1) {</div> |
| <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordtype">char</span> c = (<a class="code" href="classimpala_1_1StringSearchSSE.html#ac6bb7a0da62ac1ccf66cf8be1918a0c4">needle_str_val_</a> == NULL) ? <a class="code" href="classimpala_1_1StringSearchSSE.html#a0e04f037b0baabf6e7b518a462943ea4">needle_cstr_</a>[0] : <a class="code" href="classimpala_1_1StringSearchSSE.html#ac6bb7a0da62ac1ccf66cf8be1918a0c4">needle_str_val_</a>-><a class="code" href="structimpala_1_1StringValue.html#a17f088f03fd1f7b017df20f58f71fe13">ptr</a>[0];</div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordtype">char</span>* s = strchr(haystack.<a class="code" href="structimpala_1_1StringValue.html#a17f088f03fd1f7b017df20f58f71fe13">ptr</a>, c);</div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">if</span> (s != NULL) {</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  result = s - haystack.<a class="code" href="structimpala_1_1StringValue.html#a17f088f03fd1f7b017df20f58f71fe13">ptr</a>;</div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (last_char_haystack == c) {</div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  result = haystack.<a class="code" href="structimpala_1_1StringValue.html#ab71e42890598d9b239cac64485db276d">len</a> - 1;</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  }</div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="comment">// Undo change to haystack</span></div> |
| <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  haystack.<a class="code" href="structimpala_1_1StringValue.html#a17f088f03fd1f7b017df20f58f71fe13">ptr</a>[haystack.<a class="code" href="structimpala_1_1StringValue.html#ab71e42890598d9b239cac64485db276d">len</a> - 1] = last_char_haystack;</div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">return</span> result;</div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  }</div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">// needle is null terminated. We just need to run strstr on the</span></div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="comment">// null terminated haystack, and if there is no match, try a match</span></div> |
| <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="comment">// on the last needle_len chars.</span></div> |
| <div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">if</span> (<a class="code" href="compiler-util_8h.html#a262afcfe437f4addb13fb1b47a6a7086">LIKELY</a>(<a class="code" href="classimpala_1_1StringSearchSSE.html#a0e04f037b0baabf6e7b518a462943ea4">needle_cstr_</a> != NULL)) {</div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordtype">char</span>* s = strstr(haystack.<a class="code" href="structimpala_1_1StringValue.html#a17f088f03fd1f7b017df20f58f71fe13">ptr</a>, <a class="code" href="classimpala_1_1StringSearchSSE.html#a0e04f037b0baabf6e7b518a462943ea4">needle_cstr_</a>);</div> |
| <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="comment">// Undo change to haystack</span></div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  haystack.<a class="code" href="structimpala_1_1StringValue.html#a17f088f03fd1f7b017df20f58f71fe13">ptr</a>[haystack.<a class="code" href="structimpala_1_1StringValue.html#ab71e42890598d9b239cac64485db276d">len</a> - 1] = last_char_haystack;</div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">if</span> (s != NULL) {</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  result = s - haystack.<a class="code" href="structimpala_1_1StringValue.html#a17f088f03fd1f7b017df20f58f71fe13">ptr</a>;</div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">// If we didn't find a match, try the last needle->len chars</span></div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordtype">char</span>* end = haystack.<a class="code" href="structimpala_1_1StringValue.html#a17f088f03fd1f7b017df20f58f71fe13">ptr</a> + haystack.<a class="code" href="structimpala_1_1StringValue.html#ab71e42890598d9b239cac64485db276d">len</a> - <a class="code" href="classimpala_1_1StringSearchSSE.html#aaf2629647b98b116c9aee3b9e94264e2">needle_len_</a>;</div> |
| <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordtype">bool</span> match = <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < <a class="code" href="classimpala_1_1StringSearchSSE.html#aaf2629647b98b116c9aee3b9e94264e2">needle_len_</a>; ++i) {</div> |
| <div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">if</span> (<a class="code" href="compiler-util_8h.html#a262afcfe437f4addb13fb1b47a6a7086">LIKELY</a>(end[i] != <a class="code" href="classimpala_1_1StringSearchSSE.html#a0e04f037b0baabf6e7b518a462943ea4">needle_cstr_</a>[i])) {</div> |
| <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  match = <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  }</div> |
| <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  }</div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">if</span> (<a class="code" href="compiler-util_8h.html#a9acc330d508b9a3b775cfdf7ce405e7d">UNLIKELY</a>(match)) result = haystack.<a class="code" href="structimpala_1_1StringValue.html#ab71e42890598d9b239cac64485db276d">len</a> - <a class="code" href="classimpala_1_1StringSearchSSE.html#aaf2629647b98b116c9aee3b9e94264e2">needle_len_</a>;</div> |
| <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  }</div> |
| <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">return</span> result;</div> |
| <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="comment">// Needle is not null terminated. Terminate it on the fly.</span></div> |
| <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> last_char_needle = <a class="code" href="classimpala_1_1StringSearchSSE.html#ac6bb7a0da62ac1ccf66cf8be1918a0c4">needle_str_val_</a>-><a class="code" href="structimpala_1_1StringValue.html#a17f088f03fd1f7b017df20f58f71fe13">ptr</a>[<a class="code" href="classimpala_1_1StringSearchSSE.html#aaf2629647b98b116c9aee3b9e94264e2">needle_len_</a> - 1];</div> |
| <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <a class="code" href="classimpala_1_1StringSearchSSE.html#ac6bb7a0da62ac1ccf66cf8be1918a0c4">needle_str_val_</a>-><a class="code" href="structimpala_1_1StringValue.html#a17f088f03fd1f7b017df20f58f71fe13">ptr</a>[<a class="code" href="classimpala_1_1StringSearchSSE.html#aaf2629647b98b116c9aee3b9e94264e2">needle_len_</a> - 1] = <span class="charliteral">'\0'</span>;</div> |
| <div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div> |
| <div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordtype">int</span> <a class="code" href="partitioning-throughput-test_8cc.html#ad172ecfd5c31c5df6282c2b4bc322bf7">offset</a> = 0;</div> |
| <div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordtype">char</span>* haystack_pos = haystack.<a class="code" href="structimpala_1_1StringValue.html#a17f088f03fd1f7b017df20f58f71fe13">ptr</a>;</div> |
| <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">while</span> (offset <= haystack.<a class="code" href="structimpala_1_1StringValue.html#ab71e42890598d9b239cac64485db276d">len</a> - <a class="code" href="classimpala_1_1StringSearchSSE.html#aaf2629647b98b116c9aee3b9e94264e2">needle_len_</a>) {</div> |
| <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordtype">char</span>* search = strstr(haystack_pos, <a class="code" href="classimpala_1_1StringSearchSSE.html#ac6bb7a0da62ac1ccf66cf8be1918a0c4">needle_str_val_</a>-><a class="code" href="structimpala_1_1StringValue.html#a17f088f03fd1f7b017df20f58f71fe13">ptr</a>);</div> |
| <div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div> |
| <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="comment">// If the shortened strings didn't match, then the full strings</span></div> |
| <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="comment">// must not match</span></div> |
| <div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">if</span> (search == NULL) <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div> |
| <div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  offset += (search - haystack_pos);</div> |
| <div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div> |
| <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="comment">// The match happened at the very end of string. This is the case where:</span></div> |
| <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="comment">// needle = "abc" (null terminated to "ab")</span></div> |
| <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="comment">// haystack is "aaabc" (null terminated to "aaab")</span></div> |
| <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="comment">// In this case, we just need to compare the last chars from both.</span></div> |
| <div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">if</span> (offset == haystack.<a class="code" href="structimpala_1_1StringValue.html#ab71e42890598d9b239cac64485db276d">len</a> - <a class="code" href="classimpala_1_1StringSearchSSE.html#aaf2629647b98b116c9aee3b9e94264e2">needle_len_</a>) {</div> |
| <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">if</span> (last_char_needle == last_char_haystack) result = <a class="code" href="partitioning-throughput-test_8cc.html#ad172ecfd5c31c5df6282c2b4bc322bf7">offset</a>;</div> |
| <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="comment">// If the shortened strings match, match the last character</span></div> |
| <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="comment">// Partial match within the string. Compare the last and if doesn't</span></div> |
| <div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="comment">// match, continue searching</span></div> |
| <div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">if</span> (search[<a class="code" href="classimpala_1_1StringSearchSSE.html#aaf2629647b98b116c9aee3b9e94264e2">needle_len_</a> - 1] == last_char_needle) {</div> |
| <div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  result = <a class="code" href="partitioning-throughput-test_8cc.html#ad172ecfd5c31c5df6282c2b4bc322bf7">offset</a>;</div> |
| <div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="comment">// Advance the haystack. This can be made more efficient by using</span></div> |
| <div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="comment">// a boyer-moore like approach (instead of just advancing by one).</span></div> |
| <div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  haystack_pos = search + 1;</div> |
| <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  ++<a class="code" href="partitioning-throughput-test_8cc.html#ad172ecfd5c31c5df6282c2b4bc322bf7">offset</a>;</div> |
| <div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  }</div> |
| <div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  }</div> |
| <div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  }</div> |
| <div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div> |
| <div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="comment">// Undo change to haystack</span></div> |
| <div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  haystack.<a class="code" href="structimpala_1_1StringValue.html#a17f088f03fd1f7b017df20f58f71fe13">ptr</a>[haystack.<a class="code" href="structimpala_1_1StringValue.html#ab71e42890598d9b239cac64485db276d">len</a> - 1] = last_char_haystack;</div> |
| <div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="comment">// Undo changes to needle</span></div> |
| <div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <a class="code" href="classimpala_1_1StringSearchSSE.html#ac6bb7a0da62ac1ccf66cf8be1918a0c4">needle_str_val_</a>-><a class="code" href="structimpala_1_1StringValue.html#a17f088f03fd1f7b017df20f58f71fe13">ptr</a>[<a class="code" href="classimpala_1_1StringSearchSSE.html#aaf2629647b98b116c9aee3b9e94264e2">needle_len_</a> - 1] = last_char_needle;</div> |
| <div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">return</span> result;</div> |
| <div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  }</div> |
| <div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  }</div> |
| <div class="line"><a name="l00139"></a><span class="lineno"> 139</span> </div> |
| <div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keyword">private</span>:</div> |
| <div class="line"><a name="l00142"></a><span class="lineno"><a class="line" href="classimpala_1_1StringSearchSSE.html#ac6bb7a0da62ac1ccf66cf8be1918a0c4"> 142</a></span>  <span class="keyword">const</span> <a class="code" href="structimpala_1_1StringValue.html">StringValue</a>* <a class="code" href="classimpala_1_1StringSearchSSE.html#ac6bb7a0da62ac1ccf66cf8be1918a0c4">needle_str_val_</a>;</div> |
| <div class="line"><a name="l00143"></a><span class="lineno"><a class="line" href="classimpala_1_1StringSearchSSE.html#a0e04f037b0baabf6e7b518a462943ea4"> 143</a></span>  <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="classimpala_1_1StringSearchSSE.html#a0e04f037b0baabf6e7b518a462943ea4">needle_cstr_</a>;</div> |
| <div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div> |
| <div class="line"><a name="l00145"></a><span class="lineno"><a class="line" href="classimpala_1_1StringSearchSSE.html#aaf2629647b98b116c9aee3b9e94264e2"> 145</a></span>  <span class="keywordtype">int</span> <a class="code" href="classimpala_1_1StringSearchSSE.html#aaf2629647b98b116c9aee3b9e94264e2">needle_len_</a>;</div> |
| <div class="line"><a name="l00146"></a><span class="lineno"> 146</span> };</div> |
| <div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div> |
| <div class="line"><a name="l00148"></a><span class="lineno"> 148</span> }</div> |
| <div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div> |
| <div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="preprocessor">#endif</span></div> |
| <div class="ttc" id="classimpala_1_1StringSearchSSE_html_ac198cd994557789995aa1ef04951788e"><div class="ttname"><a href="classimpala_1_1StringSearchSSE.html#ac198cd994557789995aa1ef04951788e">impala::StringSearchSSE::StringSearchSSE</a></div><div class="ttdeci">StringSearchSSE(const StringValue *needle)</div><div class="ttdef"><b>Definition:</b> <a href="string-search-sse_8h_source.html#l00032">string-search-sse.h:32</a></div></div> |
| <div class="ttc" id="classimpala_1_1StringSearchSSE_html"><div class="ttname"><a href="classimpala_1_1StringSearchSSE.html">impala::StringSearchSSE</a></div><div class="ttdef"><b>Definition:</b> <a href="string-search-sse_8h_source.html#l00018">string-search-sse.h:18</a></div></div> |
| <div class="ttc" id="structimpala_1_1StringValue_html"><div class="ttname"><a href="structimpala_1_1StringValue.html">impala::StringValue</a></div><div class="ttdef"><b>Definition:</b> <a href="string-value_8h_source.html#l00033">string-value.h:33</a></div></div> |
| <div class="ttc" id="classimpala_1_1StringSearchSSE_html_ac6bb7a0da62ac1ccf66cf8be1918a0c4"><div class="ttname"><a href="classimpala_1_1StringSearchSSE.html#ac6bb7a0da62ac1ccf66cf8be1918a0c4">impala::StringSearchSSE::needle_str_val_</a></div><div class="ttdeci">const StringValue * needle_str_val_</div><div class="ttdoc">Only one of these two will be non-null. Both are unowned. </div><div class="ttdef"><b>Definition:</b> <a href="string-search-sse_8h_source.html#l00142">string-search-sse.h:142</a></div></div> |
| <div class="ttc" id="structimpala_1_1StringValue_html_ab71e42890598d9b239cac64485db276d"><div class="ttname"><a href="structimpala_1_1StringValue.html#ab71e42890598d9b239cac64485db276d">impala::StringValue::len</a></div><div class="ttdeci">int len</div><div class="ttdef"><b>Definition:</b> <a href="string-value_8h_source.html#l00038">string-value.h:38</a></div></div> |
| <div class="ttc" id="logging_8h_html"><div class="ttname"><a href="logging_8h.html">logging.h</a></div></div> |
| <div class="ttc" id="classimpala_1_1StringSearchSSE_html_a0e04f037b0baabf6e7b518a462943ea4"><div class="ttname"><a href="classimpala_1_1StringSearchSSE.html#a0e04f037b0baabf6e7b518a462943ea4">impala::StringSearchSSE::needle_cstr_</a></div><div class="ttdeci">const char * needle_cstr_</div><div class="ttdef"><b>Definition:</b> <a href="string-search-sse_8h_source.html#l00143">string-search-sse.h:143</a></div></div> |
| <div class="ttc" id="classimpala_1_1StringSearchSSE_html_aceed3032b366f10f4b95bbdd2ecccc0d"><div class="ttname"><a href="classimpala_1_1StringSearchSSE.html#aceed3032b366f10f4b95bbdd2ecccc0d">impala::StringSearchSSE::StringSearchSSE</a></div><div class="ttdeci">StringSearchSSE(const char *needle)</div><div class="ttdef"><b>Definition:</b> <a href="string-search-sse_8h_source.html#l00025">string-search-sse.h:25</a></div></div> |
| <div class="ttc" id="classimpala_1_1StringSearchSSE_html_ac22795d8ec86eec8604ad078d87c5ab3"><div class="ttname"><a href="classimpala_1_1StringSearchSSE.html#ac22795d8ec86eec8604ad078d87c5ab3">impala::StringSearchSSE::Search</a></div><div class="ttdeci">int Search(const StringValue &haystack) const </div><div class="ttdef"><b>Definition:</b> <a href="string-search-sse_8h_source.html#l00043">string-search-sse.h:43</a></div></div> |
| <div class="ttc" id="classimpala_1_1StringSearchSSE_html_a58a85a02099f8998eb81659e88683905"><div class="ttname"><a href="classimpala_1_1StringSearchSSE.html#a58a85a02099f8998eb81659e88683905">impala::StringSearchSSE::StringSearchSSE</a></div><div class="ttdeci">StringSearchSSE()</div><div class="ttdef"><b>Definition:</b> <a href="string-search-sse_8h_source.html#l00037">string-search-sse.h:37</a></div></div> |
| <div class="ttc" id="classimpala_1_1StringSearchSSE_html_aaf2629647b98b116c9aee3b9e94264e2"><div class="ttname"><a href="classimpala_1_1StringSearchSSE.html#aaf2629647b98b116c9aee3b9e94264e2">impala::StringSearchSSE::needle_len_</a></div><div class="ttdeci">int needle_len_</div><div class="ttdef"><b>Definition:</b> <a href="string-search-sse_8h_source.html#l00145">string-search-sse.h:145</a></div></div> |
| <div class="ttc" id="structimpala_1_1StringValue_html_a17f088f03fd1f7b017df20f58f71fe13"><div class="ttname"><a href="structimpala_1_1StringValue.html#a17f088f03fd1f7b017df20f58f71fe13">impala::StringValue::ptr</a></div><div class="ttdeci">char * ptr</div><div class="ttdef"><b>Definition:</b> <a href="string-value_8h_source.html#l00037">string-value.h:37</a></div></div> |
| <div class="ttc" id="compiler-util_8h_html"><div class="ttname"><a href="compiler-util_8h.html">compiler-util.h</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="compiler-util_8h_html_a262afcfe437f4addb13fb1b47a6a7086"><div class="ttname"><a href="compiler-util_8h.html#a262afcfe437f4addb13fb1b47a6a7086">LIKELY</a></div><div class="ttdeci">#define LIKELY(expr)</div><div class="ttdef"><b>Definition:</b> <a href="compiler-util_8h_source.html#l00032">compiler-util.h:32</a></div></div> |
| <div class="ttc" id="partitioning-throughput-test_8cc_html_ad172ecfd5c31c5df6282c2b4bc322bf7"><div class="ttname"><a href="partitioning-throughput-test_8cc.html#ad172ecfd5c31c5df6282c2b4bc322bf7">offset</a></div><div class="ttdeci">uint8_t offset[7 *64-sizeof(uint64_t)]</div><div class="ttdef"><b>Definition:</b> <a href="partitioning-throughput-test_8cc_source.html#l00037">partitioning-throughput-test.cc:37</a></div></div> |
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