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lemire
2023-10-20 20:24:41 +00:00
parent 08168fb60c
commit b8d344d4b0
1 changed files with 129 additions and 132 deletions
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@@ -141,141 +141,138 @@ $(document).ready(function(){initNavTree('portability_8h_source.html',''); initR
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; </div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;<span class="preprocessor">#if SIMDJSON_IS_32BITS</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;<span class="preprocessor">#ifndef SIMDJSON_NO_PORTABILITY_WARNING</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;<span class="preprocessor">#pragma message(&quot;The simdjson library is designed \</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;<span class="preprocessor">for 64-bit processors and it seems that you are not \</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;<span class="preprocessor">compiling for a known 64-bit platform. All fast kernels \</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;<span class="preprocessor">will be disabled and performance may be poor. Please \</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;<span class="preprocessor">use a 64-bit target such as x64, 64-bit ARM or 64-bit PPC.&quot;</span>)</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;<span class="preprocessor">#endif </span><span class="comment">// SIMDJSON_NO_PORTABILITY_WARNING</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;<span class="preprocessor">#endif </span><span class="comment">// SIMDJSON_IS_32BITS</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;<span class="comment">// In the future, we should allow programmers</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;<span class="comment">// to get warning.</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;<span class="preprocessor">#endif </span><span class="comment">// SIMDJSON_NO_PORTABILITY_WARNING</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;<span class="preprocessor">#endif </span><span class="comment">// SIMDJSON_IS_32BITS</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;<span class="preprocessor">#define SIMDJSON_CAT_IMPLEMENTATION_(a,...) a ## __VA_ARGS__</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;<span class="preprocessor">#define SIMDJSON_CAT(a,...) SIMDJSON_CAT_IMPLEMENTATION_(a, __VA_ARGS__)</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; </div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;<span class="preprocessor">#define SIMDJSON_CAT_IMPLEMENTATION_(a,...) a ## __VA_ARGS__</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;<span class="preprocessor">#define SIMDJSON_CAT(a,...) SIMDJSON_CAT_IMPLEMENTATION_(a, __VA_ARGS__)</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;<span class="preprocessor">#define SIMDJSON_STRINGIFY_IMPLEMENTATION_(a,...) #a SIMDJSON_STRINGIFY(__VA_ARGS__)</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;<span class="preprocessor">#define SIMDJSON_STRINGIFY(a,...) SIMDJSON_CAT_IMPLEMENTATION_(a, __VA_ARGS__)</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;<span class="preprocessor">#define SIMDJSON_STRINGIFY_IMPLEMENTATION_(a,...) #a SIMDJSON_STRINGIFY(__VA_ARGS__)</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;<span class="preprocessor">#define SIMDJSON_STRINGIFY(a,...) SIMDJSON_CAT_IMPLEMENTATION_(a, __VA_ARGS__)</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;<span class="comment">// this is almost standard?</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;<span class="preprocessor">#undef SIMDJSON_STRINGIFY_IMPLEMENTATION_</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;<span class="preprocessor">#undef SIMDJSON_STRINGIFY</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;<span class="preprocessor">#define SIMDJSON_STRINGIFY_IMPLEMENTATION_(a) #a</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;<span class="preprocessor">#define SIMDJSON_STRINGIFY(a) SIMDJSON_STRINGIFY_IMPLEMENTATION_(a)</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; </div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;<span class="comment">// Our fast kernels require 64-bit systems.</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;<span class="comment">// this is almost standard?</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;<span class="preprocessor">#undef SIMDJSON_STRINGIFY_IMPLEMENTATION_</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;<span class="preprocessor">#undef SIMDJSON_STRINGIFY</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;<span class="preprocessor">#define SIMDJSON_STRINGIFY_IMPLEMENTATION_(a) #a</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;<span class="preprocessor">#define SIMDJSON_STRINGIFY(a) SIMDJSON_STRINGIFY_IMPLEMENTATION_(a)</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;<span class="comment">// Our fast kernels require 64-bit systems.</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;<span class="comment">// On 32-bit x86, we lack 64-bit popcnt, lzcnt, blsr instructions.</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;<span class="comment">// Furthermore, the number of SIMD registers is reduced.</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;<span class="comment">// On 32-bit x86, we lack 64-bit popcnt, lzcnt, blsr instructions.</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;<span class="comment">// Furthermore, the number of SIMD registers is reduced.</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;<span class="comment">// On 32-bit ARM, we would have smaller registers.</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;<span class="comment">// The simdjson users should still have the fallback kernel. It is</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;<span class="comment">// slower, but it should run everywhere.</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; </div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;<span class="comment">// Enable valid runtime implementations, and select SIMDJSON_BUILTIN_IMPLEMENTATION</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; </div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;<span class="comment">// We are going to use runtime dispatch.</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;<span class="preprocessor">#if SIMDJSON_IS_X86_64</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;<span class="preprocessor">#ifdef __clang__</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;<span class="comment">// clang does not have GCC push pop</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;<span class="comment">// warning: clang attribute push can&#39;t be used within a namespace in clang up</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;<span class="comment">// til 8.0 so SIMDJSON_TARGET_REGION and SIMDJSON_UNTARGET_REGION must be *outside* of a</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;<span class="comment">// namespace.</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;<span class="preprocessor">#define SIMDJSON_TARGET_REGION(T) \</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;<span class="preprocessor"> _Pragma(SIMDJSON_STRINGIFY( \</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;<span class="preprocessor"> clang attribute push(__attribute__((target(T))), apply_to = function)))</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;<span class="preprocessor">#define SIMDJSON_UNTARGET_REGION _Pragma(&quot;clang attribute pop&quot;</span>)</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;<span class="preprocessor">#elif defined(__GNUC__)</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;<span class="comment">// GCC is easier</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;<span class="preprocessor">#define SIMDJSON_TARGET_REGION(T) \</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;<span class="preprocessor"> _Pragma(&quot;GCC push_options&quot;</span>) _Pragma(SIMDJSON_STRINGIFY(GCC target(T)))</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;<span class="preprocessor">#define SIMDJSON_UNTARGET_REGION _Pragma(&quot;GCC pop_options&quot;</span>)</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;<span class="preprocessor">#endif </span><span class="comment">// clang then gcc</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; </div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;<span class="preprocessor">#endif </span><span class="comment">// x86</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;<span class="comment">// Default target region macros don&#39;t do anything.</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160;<span class="preprocessor">#ifndef SIMDJSON_TARGET_REGION</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;<span class="preprocessor">#define SIMDJSON_TARGET_REGION(T)</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;<span class="preprocessor">#define SIMDJSON_UNTARGET_REGION</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; </div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160;<span class="comment">// Is threading enabled?</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160;<span class="preprocessor">#if defined(_REENTRANT) || defined(_MT)</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;<span class="preprocessor">#ifndef SIMDJSON_THREADS_ENABLED</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160;<span class="preprocessor">#define SIMDJSON_THREADS_ENABLED</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; </div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;<span class="comment">// workaround for large stack sizes under -O0.</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;<span class="comment">// https://github.com/simdjson/simdjson/issues/691</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;<span class="preprocessor">#ifdef __APPLE__</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;<span class="preprocessor">#ifndef __OPTIMIZE__</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160;<span class="comment">// Apple systems have small stack sizes in secondary threads.</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160;<span class="comment">// Lack of compiler optimization may generate high stack usage.</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160;<span class="comment">// Users may want to disable threads for safety, but only when</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;<span class="comment">// in debug mode which we detect by the fact that the __OPTIMIZE__</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160;<span class="comment">// macro is not defined.</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160;<span class="preprocessor">#undef SIMDJSON_THREADS_ENABLED</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160;<span class="preprocessor">#endif</span></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">#if defined(__clang__)</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;<span class="preprocessor">#define SIMDJSON_NO_SANITIZE_UNDEFINED __attribute__((no_sanitize(&quot;undefined&quot;</span>)))</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160;<span class="preprocessor">#elif defined(__GNUC__)</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160;<span class="preprocessor">#define SIMDJSON_NO_SANITIZE_UNDEFINED __attribute__((no_sanitize_undefined))</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;<span class="preprocessor">#define SIMDJSON_NO_SANITIZE_UNDEFINED</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; </div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; </div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160;<span class="preprocessor">#if defined(__clang__) || defined(__GNUC__)</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;<span class="preprocessor">#if defined(__has_feature)</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160;<span class="preprocessor"># if __has_feature(memory_sanitizer)</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;<span class="preprocessor">#define SIMDJSON_NO_SANITIZE_MEMORY __attribute__((no_sanitize(&quot;memory&quot;</span>)))</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160;<span class="preprocessor"># endif </span><span class="comment">// if __has_feature(memory_sanitizer)</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160;<span class="preprocessor">#endif </span><span class="comment">// defined(__has_feature)</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160;<span class="comment">// make sure it is defined as &#39;nothing&#39; if it is unapplicable.</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;<span class="preprocessor">#ifndef SIMDJSON_NO_SANITIZE_MEMORY</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160;<span class="preprocessor">#define SIMDJSON_NO_SANITIZE_MEMORY</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; </div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160;<span class="preprocessor">#if SIMDJSON_VISUAL_STUDIO</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160;<span class="comment">// This is one case where we do not distinguish between</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;<span class="comment">// regular visual studio and clang under visual studio.</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160;<span class="comment">// clang under Windows has _stricmp (like visual studio) but not strcasecmp (as clang normally has)</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;<span class="preprocessor">#define simdjson_strcasecmp _stricmp</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160;<span class="preprocessor">#define simdjson_strncasecmp _strnicmp</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160;<span class="comment">// The strcasecmp, strncasecmp, and strcasestr functions do not work with multibyte strings (e.g. UTF-8).</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160;<span class="comment">// So they are only useful for ASCII in our context.</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160;<span class="comment">// https://www.gnu.org/software/libunistring/manual/libunistring.html#char-_002a-strings</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160;<span class="preprocessor">#define simdjson_strcasecmp strcasecmp</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160;<span class="preprocessor">#define simdjson_strncasecmp strncasecmp</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; </div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160;<span class="preprocessor">#if defined(NDEBUG) || defined(__OPTIMIZE__) || (defined(_MSC_VER) &amp;&amp; !defined(_DEBUG))</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160;<span class="comment">// If NDEBUG is set, or __OPTIMIZE__ is set, or we are under MSVC in release mode,</span></div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160;<span class="comment">// then do away with asserts and use __assume.</span></div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160;<span class="preprocessor">#if SIMDJSON_VISUAL_STUDIO</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160;<span class="preprocessor">#define SIMDJSON_UNREACHABLE() __assume(0)</span></div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160;<span class="preprocessor">#define SIMDJSON_ASSUME(COND) __assume(COND)</span></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160;<span class="preprocessor">#define SIMDJSON_UNREACHABLE() __builtin_unreachable();</span></div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160;<span class="preprocessor">#define SIMDJSON_ASSUME(COND) do { if (!(COND)) __builtin_unreachable(); } while (0)</span></div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; </div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160;<span class="preprocessor">#else </span><span class="comment">// defined(NDEBUG) || defined(__OPTIMIZE__) || (defined(_MSC_VER) &amp;&amp; !defined(_DEBUG))</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160;<span class="comment">// This should only ever be enabled in debug mode.</span></div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160;<span class="preprocessor">#define SIMDJSON_UNREACHABLE() assert(0);</span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160;<span class="preprocessor">#define SIMDJSON_ASSUME(COND) assert(COND)</span></div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; </div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; </div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160;<span class="preprocessor">#endif </span><span class="comment">// SIMDJSON_PORTABILITY_H</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;<span class="comment">// On 32-bit ARM, we would have smaller registers.</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;<span class="comment">// The simdjson users should still have the fallback kernel. It is</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;<span class="comment">// slower, but it should run everywhere.</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; </div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;<span class="comment">// Enable valid runtime implementations, and select SIMDJSON_BUILTIN_IMPLEMENTATION</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;<span class="comment">//</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;<span class="comment">// We are going to use runtime dispatch.</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;<span class="preprocessor">#if SIMDJSON_IS_X86_64</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;<span class="preprocessor">#ifdef __clang__</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;<span class="comment">// clang does not have GCC push pop</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;<span class="comment">// warning: clang attribute push can&#39;t be used within a namespace in clang up</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;<span class="comment">// til 8.0 so SIMDJSON_TARGET_REGION and SIMDJSON_UNTARGET_REGION must be *outside* of a</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;<span class="comment">// namespace.</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;<span class="preprocessor">#define SIMDJSON_TARGET_REGION(T) \</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;<span class="preprocessor"> _Pragma(SIMDJSON_STRINGIFY( \</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;<span class="preprocessor"> clang attribute push(__attribute__((target(T))), apply_to = function)))</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;<span class="preprocessor">#define SIMDJSON_UNTARGET_REGION _Pragma(&quot;clang attribute pop&quot;</span>)</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;<span class="preprocessor">#elif defined(__GNUC__)</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;<span class="comment">// GCC is easier</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;<span class="preprocessor">#define SIMDJSON_TARGET_REGION(T) \</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;<span class="preprocessor"> _Pragma(&quot;GCC push_options&quot;</span>) _Pragma(SIMDJSON_STRINGIFY(GCC target(T)))</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;<span class="preprocessor">#define SIMDJSON_UNTARGET_REGION _Pragma(&quot;GCC pop_options&quot;</span>)</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;<span class="preprocessor">#endif </span><span class="comment">// clang then gcc</span></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><span class="comment">// x86</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; </div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160;<span class="comment">// Default target region macros don&#39;t do anything.</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;<span class="preprocessor">#ifndef SIMDJSON_TARGET_REGION</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;<span class="preprocessor">#define SIMDJSON_TARGET_REGION(T)</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;<span class="preprocessor">#define SIMDJSON_UNTARGET_REGION</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; </div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;<span class="comment">// Is threading enabled?</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160;<span class="preprocessor">#if defined(_REENTRANT) || defined(_MT)</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;<span class="preprocessor">#ifndef SIMDJSON_THREADS_ENABLED</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160;<span class="preprocessor">#define SIMDJSON_THREADS_ENABLED</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; </div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160;<span class="comment">// workaround for large stack sizes under -O0.</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160;<span class="comment">// https://github.com/simdjson/simdjson/issues/691</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160;<span class="preprocessor">#ifdef __APPLE__</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;<span class="preprocessor">#ifndef __OPTIMIZE__</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;<span class="comment">// Apple systems have small stack sizes in secondary threads.</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;<span class="comment">// Lack of compiler optimization may generate high stack usage.</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;<span class="comment">// Users may want to disable threads for safety, but only when</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160;<span class="comment">// in debug mode which we detect by the fact that the __OPTIMIZE__</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160;<span class="comment">// macro is not defined.</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160;<span class="preprocessor">#undef SIMDJSON_THREADS_ENABLED</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160;<span class="preprocessor">#endif</span></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;<span class="preprocessor">#if defined(__clang__)</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;<span class="preprocessor">#define SIMDJSON_NO_SANITIZE_UNDEFINED __attribute__((no_sanitize(&quot;undefined&quot;</span>)))</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;<span class="preprocessor">#elif defined(__GNUC__)</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160;<span class="preprocessor">#define SIMDJSON_NO_SANITIZE_UNDEFINED __attribute__((no_sanitize_undefined))</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160;<span class="preprocessor">#define SIMDJSON_NO_SANITIZE_UNDEFINED</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; </div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; </div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160;<span class="preprocessor">#if defined(__clang__) || defined(__GNUC__)</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160;<span class="preprocessor">#if defined(__has_feature)</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160;<span class="preprocessor"># if __has_feature(memory_sanitizer)</span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160;<span class="preprocessor">#define SIMDJSON_NO_SANITIZE_MEMORY __attribute__((no_sanitize(&quot;memory&quot;</span>)))</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;<span class="preprocessor"># endif </span><span class="comment">// if __has_feature(memory_sanitizer)</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160;<span class="preprocessor">#endif </span><span class="comment">// defined(__has_feature)</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160;<span class="comment">// make sure it is defined as &#39;nothing&#39; if it is unapplicable.</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160;<span class="preprocessor">#ifndef SIMDJSON_NO_SANITIZE_MEMORY</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160;<span class="preprocessor">#define SIMDJSON_NO_SANITIZE_MEMORY</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; </div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160;<span class="preprocessor">#if SIMDJSON_VISUAL_STUDIO</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160;<span class="comment">// This is one case where we do not distinguish between</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160;<span class="comment">// regular visual studio and clang under visual studio.</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160;<span class="comment">// clang under Windows has _stricmp (like visual studio) but not strcasecmp (as clang normally has)</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160;<span class="preprocessor">#define simdjson_strcasecmp _stricmp</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;<span class="preprocessor">#define simdjson_strncasecmp _strnicmp</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;<span class="comment">// The strcasecmp, strncasecmp, and strcasestr functions do not work with multibyte strings (e.g. UTF-8).</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160;<span class="comment">// So they are only useful for ASCII in our context.</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160;<span class="comment">// https://www.gnu.org/software/libunistring/manual/libunistring.html#char-_002a-strings</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160;<span class="preprocessor">#define simdjson_strcasecmp strcasecmp</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160;<span class="preprocessor">#define simdjson_strncasecmp strncasecmp</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; </div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160;<span class="preprocessor">#if defined(NDEBUG) || defined(__OPTIMIZE__) || (defined(_MSC_VER) &amp;&amp; !defined(_DEBUG))</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160;<span class="comment">// If NDEBUG is set, or __OPTIMIZE__ is set, or we are under MSVC in release mode,</span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160;<span class="comment">// then do away with asserts and use __assume.</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160;<span class="preprocessor">#if SIMDJSON_VISUAL_STUDIO</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160;<span class="preprocessor">#define SIMDJSON_UNREACHABLE() __assume(0)</span></div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160;<span class="preprocessor">#define SIMDJSON_ASSUME(COND) __assume(COND)</span></div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160;<span class="preprocessor">#define SIMDJSON_UNREACHABLE() __builtin_unreachable();</span></div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160;<span class="preprocessor">#define SIMDJSON_ASSUME(COND) do { if (!(COND)) __builtin_unreachable(); } while (0)</span></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; </div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160;<span class="preprocessor">#else </span><span class="comment">// defined(NDEBUG) || defined(__OPTIMIZE__) || (defined(_MSC_VER) &amp;&amp; !defined(_DEBUG))</span></div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160;<span class="comment">// This should only ever be enabled in debug mode.</span></div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160;<span class="preprocessor">#define SIMDJSON_UNREACHABLE() assert(0);</span></div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160;<span class="preprocessor">#define SIMDJSON_ASSUME(COND) assert(COND)</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; </div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; </div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160;<span class="preprocessor">#endif </span><span class="comment">// SIMDJSON_PORTABILITY_H</span></div>
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