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<a href="gccmacro_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="preprocessor">#ifndef foopulsegccmacrohfoo</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define foopulsegccmacrohfoo</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>  </div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">/***</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> This file is part of PulseAudio.</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"></span> </div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> Copyright 2004-2006 Lennart Poettering</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"></span> </div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> PulseAudio is free software; you can redistribute it and/or modify</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> it under the terms of the GNU Lesser General Public License as published</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> by the Free Software Foundation; either version 2.1 of the License,</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> or (at your option) any later version.</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"></span> </div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> PulseAudio is distributed in the hope that it will be useful, but</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> General Public License for more details.</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"></span> </div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> You should have received a copy of the GNU Lesser General Public License</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">***/</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  </div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#if defined(__GNUC__)</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#ifdef __MINGW32__</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <stdio.h></span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#define PA_GCC_PRINTF_ATTR(a,b) __attribute__ ((format (__MINGW_PRINTF_FORMAT, a, b)))</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#define PA_GCC_PRINTF_ATTR(a,b) __attribute__ ((format (printf, a, b)))</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"><a class="line" href="gccmacro_8h.html#a990fc0ee61d22621f5e680f9e602a643"> 35</a></span> <span class="preprocessor">#define PA_GCC_PRINTF_ATTR(a,b)</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  </div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#if defined(__GNUC__) && (__GNUC__ >= 4)</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#define PA_GCC_SENTINEL __attribute__ ((sentinel))</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"><a class="line" href="gccmacro_8h.html#ad70594a0b54eb6df6aedc3e74c57f336"> 42</a></span> <span class="preprocessor">#define PA_GCC_SENTINEL</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  </div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor">#ifdef __GNUC__</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="preprocessor">#define PA_GCC_NORETURN __attribute__((noreturn))</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"><a class="line" href="gccmacro_8h.html#a7cbbe1a6ae2b2f5ea7c31343fc84541a"> 49</a></span> <span class="preprocessor">#define PA_GCC_NORETURN</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor">#endif</span></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="preprocessor">#ifdef __GNUC__</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor">#define PA_GCC_UNUSED __attribute__ ((unused))</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"><a class="line" href="gccmacro_8h.html#a331998caedf5edb306d062c1ebd39b52"> 56</a></span> <span class="preprocessor">#define PA_GCC_UNUSED</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  </div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="preprocessor">#ifdef __GNUC__</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="preprocessor">#define PA_GCC_DESTRUCTOR __attribute__ ((destructor))</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="gccmacro_8h.html#ace57d7cf83b0f61d5cd03d25a94540ea"> 63</a></span> <span class="preprocessor">#define PA_GCC_DESTRUCTOR</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="preprocessor">#ifndef PA_GCC_PURE</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="preprocessor">#ifdef __GNUC__</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="preprocessor">#define PA_GCC_PURE __attribute__ ((pure))</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"><a class="line" href="gccmacro_8h.html#aa1c5f50faa1073e28ba469b86f6a0548"> 71</a></span> <span class="preprocessor">#define PA_GCC_PURE</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  </div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="preprocessor">#ifndef PA_GCC_CONST</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="preprocessor">#ifdef __GNUC__</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="preprocessor">#define PA_GCC_CONST __attribute__ ((const))</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="gccmacro_8h.html#a318a98dce3b37977670c87a74c173b16"> 80</a></span> <span class="preprocessor">#define PA_GCC_CONST</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="preprocessor">#ifndef PA_GCC_DEPRECATED</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="preprocessor">#ifdef __GNUC__</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="preprocessor">#define PA_GCC_DEPRECATED __attribute__ ((deprecated))</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"><a class="line" href="gccmacro_8h.html#a0dde33476a416755fa1f78749c42327e"> 89</a></span> <span class="preprocessor">#define PA_GCC_DEPRECATED</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  </div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="preprocessor">#ifndef PA_GCC_PACKED</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="preprocessor">#ifdef __GNUC__</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="preprocessor">#define PA_GCC_PACKED __attribute__ ((packed))</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"><a class="line" href="gccmacro_8h.html#a0763afeb14612b9e24dcfd79c6c1e63e"> 98</a></span> <span class="preprocessor">#define PA_GCC_PACKED</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  </div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="preprocessor">#ifndef PA_GCC_ALLOC_SIZE</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="preprocessor">#if defined(__GNUC__) && (__GNUC__ >= 4) && (__GNUC_MINOR__ >= 3)</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="preprocessor">#define PA_GCC_ALLOC_SIZE(x) __attribute__ ((__alloc_size__(x)))</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="preprocessor">#define PA_GCC_ALLOC_SIZE2(x,y) __attribute__ ((__alloc_size__(x,y)))</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"><a class="line" href="gccmacro_8h.html#a6e2549ace2f992e4709a298c12b4f4c9"> 108</a></span> <span class="preprocessor">#define PA_GCC_ALLOC_SIZE(x)</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"><a class="line" href="gccmacro_8h.html#a8755d2823ec92785e2fb1c46b22cf885"> 110</a></span> <span class="preprocessor">#define PA_GCC_ALLOC_SIZE2(x,y)</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="preprocessor">#ifndef PA_GCC_MALLOC</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="preprocessor">#ifdef __GNUC__</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="preprocessor">#define PA_GCC_MALLOC __attribute__ ((malloc))</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"><a class="line" href="gccmacro_8h.html#a0b0b35280ca118d4afd3ebe0aeb6be7c"> 119</a></span> <span class="preprocessor">#define PA_GCC_MALLOC</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="preprocessor">#ifndef PA_GCC_WEAKREF</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="preprocessor">#if defined(__GNUC__) && defined(__ELF__) && (((__GNUC__ == 4) && (__GNUC_MINOR__ > 1)) || (__GNUC__ > 4))</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="preprocessor">#define PA_GCC_WEAKREF(x) __attribute__((weakref(#x)))</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="preprocessor">#endif</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> <span class="preprocessor">#ifndef PA_LIKELY</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="preprocessor">#ifdef __GNUC__</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="preprocessor">#define PA_LIKELY(x) (__builtin_expect(!!(x),1))</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="preprocessor">#define PA_UNLIKELY(x) (__builtin_expect(!!(x),0))</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"><a class="line" href="gccmacro_8h.html#a9e5bef75ca995abece14e0ed715ce863"> 135</a></span> <span class="preprocessor">#define PA_LIKELY(x) (x)</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"><a class="line" href="gccmacro_8h.html#a27614cd3d62554b56e2d5363c222c0b5"> 136</a></span> <span class="preprocessor">#define PA_UNLIKELY(x) (x)</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="preprocessor">#endif</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="preprocessor">#ifdef __GNUC__</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="preprocessor">#define PA_CLAMP(x, low, high) \</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="preprocessor"> __extension__ ({ \</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="preprocessor"> typeof(x) _x = (x); \</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="preprocessor"> typeof(low) _low = (low); \</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="preprocessor"> typeof(high) _high = (high); \</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="preprocessor"> ((_x > _high) ? _high : ((_x < _low) ? _low : _x)); \</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="preprocessor"> })</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"><a class="line" href="gccmacro_8h.html#ae583ab4a9baed01640280d3caa4b1514"> 149</a></span> <span class="preprocessor">#define PA_CLAMP(x, low, high) (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  </div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="preprocessor">#ifdef __GNUC__</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="preprocessor">#define PA_CLAMP_UNLIKELY(x, low, high) \</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="preprocessor"> __extension__ ({ \</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="preprocessor"> typeof(x) _x = (x); \</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="preprocessor"> typeof(low) _low = (low); \</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="preprocessor"> typeof(high) _high = (high); \</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="preprocessor"> (PA_UNLIKELY(_x > _high) ? _high : (PA_UNLIKELY(_x < _low) ? _low : _x)); \</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="preprocessor"> })</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"><a class="line" href="gccmacro_8h.html#aee38eae8a520194bfc210d92163c04cc"> 161</a></span> <span class="preprocessor">#define PA_CLAMP_UNLIKELY(x, low, high) (PA_UNLIKELY((x) > (high)) ? (high) : (PA_UNLIKELY((x) < (low)) ? (low) : (x)))</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  </div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="comment">/* We don't define a PA_CLAMP_LIKELY here, because it doesn't really</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="comment"> * make sense: we cannot know if it is more likely that the value is</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="comment"> * lower or greater than the boundaries. */</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  </div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="preprocessor">#endif</span></div>
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