<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.3"/> <title>libstdc++: compatibility.h Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="navtree.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="resize.js"></script> <script type="text/javascript" src="navtree.js"></script> <script type="text/javascript"> $(document).ready(initResizable); $(window).load(resizeHeight); </script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td style="padding-left: 0.5em;"> <div id="projectname">libstdc++ </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.8.3 --> </div><!-- top --> <div id="side-nav" class="ui-resizable side-nav-resizable"> <div id="nav-tree"> <div id="nav-tree-contents"> <div id="nav-sync" class="sync"></div> </div> </div> <div id="splitbar" style="-moz-user-select:none;" class="ui-resizable-handle"> </div> </div> <script type="text/javascript"> $(document).ready(function(){initNavTree('a01047_source.html','');}); </script> <div id="doc-content"> <div class="header"> <div class="headertitle"> <div class="title">parallel/compatibility.h</div> </div> </div><!--header--> <div class="contents"> <a href="a01047.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">// -*- C++ -*-</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="comment">// Copyright (C) 2007, 2008, 2009, 2010, 2012 Free Software Foundation, Inc.</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 the GNU ISO C++ Library. This library is free</span></div> <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// software; you can redistribute it and/or modify it under the terms</span></div> <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// of the GNU General Public License as published by the Free Software</span></div> <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// Foundation; either version 3, or (at your option) any later</span></div> <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// version.</span></div> <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div> <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// This library is distributed in the hope that it will be useful, but</span></div> <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// WITHOUT ANY WARRANTY; without even the implied warranty of</span></div> <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div> <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// General Public License for more details.</span></div> <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div> <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">// Under Section 7 of GPL version 3, you are granted additional</span></div> <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// permissions described in the GCC Runtime Library Exception, version</span></div> <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// 3.1, as published by the Free Software Foundation.</span></div> <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div> <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// You should have received a copy of the GNU General Public License and</span></div> <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span></div> <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</span></div> <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// <http://www.gnu.org/licenses/>.</span></div> <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"></span></div> <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">/** @file parallel/compatibility.h</span></div> <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * @brief Compatibility layer, mostly concerned with atomic operations.</span></div> <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * This file is a GNU parallel extension to the Standard C++ Library.</span></div> <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> */</span></div> <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div> <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">// Written by Felix Putze.</span></div> <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div> <div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#ifndef _GLIBCXX_PARALLEL_COMPATIBILITY_H</span></div> <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor"></span><span class="preprocessor">#define _GLIBCXX_PARALLEL_COMPATIBILITY_H 1</span></div> <div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include <<a class="code" href="a01560.html" title="Basic types and typedefs. This file is a GNU parallel extension to the Standard C++ Library...">parallel/types.h</a>></span></div> <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <<a class="code" href="a00993.html" title="Sequential helper functions. This file is a GNU parallel extension to the Standard C++ Library...">parallel/base.h</a>></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(__SUNPRO_CC) && defined(__sparc)</span></div> <div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor"></span><span class="preprocessor">#include <sys/atomic.h></span></div> <div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor">#if !defined(_WIN32) || defined (__CYGWIN__)</span></div> <div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor"></span><span class="preprocessor">#include <sched.h></span></div> <div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="preprocessor">#if defined(_MSC_VER)</span></div> <div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor"></span><span class="preprocessor">#include <Windows.h></span></div> <div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor">#include <intrin.h></span></div> <div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor">#undef max</span></div> <div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor"></span><span class="preprocessor">#undef min</span></div> <div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div> <div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor">#ifdef __MINGW32__</span></div> <div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="preprocessor"></span><span class="comment">// Including <windows.h> will drag in all the windows32 names. Since</span></div> <div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment">// that can cause user code portability problems, we just declare the</span></div> <div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment">// one needed function here.</span></div> <div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span></div> <div class="line"><a name="l00058"></a><span class="lineno"> 58</span> __attribute((dllimport)) void __attribute__((stdcall)) Sleep (<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span>);</div> <div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="keyword">namespace </span>__gnu_parallel</div> <div class="line"><a name="l00062"></a><span class="lineno"> 62</span> {</div> <div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="preprocessor">#if defined(__ICC)</span></div> <div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="preprocessor"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _MustBeInt = <span class="keywordtype">int</span>></div> <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  int32_t __faa32(int32_t* __x, int32_t __inc)</div> <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  {</div> <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keyword">asm</span> <span class="keyword">volatile</span>(<span class="stringliteral">"lock xadd %0,%1"</span></div> <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  : <span class="stringliteral">"=__r"</span> (__inc), <span class="stringliteral">"=__m"</span> (*__x)</div> <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  : <span class="stringliteral">"0"</span> (__inc)</div> <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  : <span class="stringliteral">"memory"</span>);</div> <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordflow">return</span> __inc;</div> <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  }</div> <div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="preprocessor">#if defined(__x86_64)</span></div> <div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="preprocessor"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _MustBeInt = <span class="keywordtype">int</span>></div> <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  int64_t __faa64(int64_t* __x, int64_t __inc)</div> <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  {</div> <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keyword">asm</span> <span class="keyword">volatile</span>(<span class="stringliteral">"lock xadd %0,%1"</span></div> <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  : <span class="stringliteral">"=__r"</span> (__inc), <span class="stringliteral">"=__m"</span> (*__x)</div> <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  : <span class="stringliteral">"0"</span> (__inc)</div> <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  : <span class="stringliteral">"memory"</span>);</div> <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">return</span> __inc;</div> <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  }</div> <div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div> <div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="comment">// atomic functions only work on integers</span></div> <div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment"></span></div> <div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"> /** @brief Add a value to a variable, atomically.</span></div> <div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"> *</span></div> <div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment"> * Implementation is heavily platform-dependent.</span></div> <div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"> * @param __ptr Pointer to a 32-bit signed integer.</span></div> <div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment"> * @param __addend Value to add.</span></div> <div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"> */</span></div> <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keyword">inline</span> int32_t</div> <div class="line"><a name="l00095"></a><span class="lineno"><a class="code" href="a01597.html#a0ecb7402bccd099b51c28bcc64d57b68"> 95</a></span>  <a class="code" href="a01597.html#a0ecb7402bccd099b51c28bcc64d57b68" title="Add a value to a variable, atomically.">__fetch_and_add_32</a>(<span class="keyword">volatile</span> int32_t* __ptr, int32_t __addend)</div> <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  {</div> <div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="preprocessor">#if defined(__ICC) //x86 version</span></div> <div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> _InterlockedExchangeAdd((<span class="keywordtype">void</span>*)__ptr, __addend);</div> <div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="preprocessor">#elif defined(__ECC) //IA-64 version</span></div> <div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> _InterlockedExchangeAdd((<span class="keywordtype">void</span>*)__ptr, __addend);</div> <div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="preprocessor">#elif defined(__ICL) || defined(_MSC_VER)</span></div> <div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> _InterlockedExchangeAdd(reinterpret_cast<volatile long*>(__ptr),</div> <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  __addend);</div> <div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="preprocessor">#elif defined(__GNUC__)</span></div> <div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> __atomic_fetch_add(__ptr, __addend, __ATOMIC_ACQ_REL);</div> <div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="preprocessor">#elif defined(__SUNPRO_CC) && defined(__sparc)</span></div> <div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="preprocessor"></span> <span class="keyword">volatile</span> int32_t __before, __after;</div> <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">do</span></div> <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  {</div> <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  __before = *__ptr;</div> <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  __after = __before + __addend;</div> <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  } <span class="keywordflow">while</span> (atomic_cas_32((<span class="keyword">volatile</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>*)__ptr, __before,</div> <div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  __after) != __before);</div> <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">return</span> __before;</div> <div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="preprocessor">#else //fallback, slow</span></div> <div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="preprocessor"></span><span class="preprocessor">#pragma message("slow __fetch_and_add_32")</span></div> <div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="preprocessor"></span> int32_t __res;</div> <div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="preprocessor">#pragma omp critical</span></div> <div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="preprocessor"></span> {</div> <div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  __res = *__ptr;</div> <div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  *(__ptr) += __addend;</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="keywordflow">return</span> __res;</div> <div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="preprocessor"></span> }</div> <div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment"></span></div> <div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="comment"> /** @brief Add a value to a variable, atomically.</span></div> <div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment"> *</span></div> <div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"> * Implementation is heavily platform-dependent.</span></div> <div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment"> * @param __ptr Pointer to a 64-bit signed integer.</span></div> <div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment"> * @param __addend Value to add.</span></div> <div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment"> */</span></div> <div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keyword">inline</span> int64_t</div> <div class="line"><a name="l00134"></a><span class="lineno"><a class="code" href="a01597.html#aa87fd421e9f75ac83103ea48fabfa77f"> 134</a></span>  <a class="code" href="a01597.html#aa87fd421e9f75ac83103ea48fabfa77f" title="Add a value to a variable, atomically.">__fetch_and_add_64</a>(<span class="keyword">volatile</span> int64_t* __ptr, int64_t __addend)</div> <div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  {</div> <div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="preprocessor">#if defined(__ICC) && defined(__x86_64) //x86 version</span></div> <div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> __faa64<int>((int64_t*)__ptr, __addend);</div> <div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="preprocessor">#elif defined(__ECC) //IA-64 version</span></div> <div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> _InterlockedExchangeAdd64((<span class="keywordtype">void</span>*)__ptr, __addend);</div> <div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="preprocessor">#elif defined(__ICL) || defined(_MSC_VER)</span></div> <div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="preprocessor"></span><span class="preprocessor">#ifndef _WIN64</span></div> <div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="preprocessor"></span> _GLIBCXX_PARALLEL_ASSERT(<span class="keyword">false</span>); <span class="comment">//not available in this case</span></div> <div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordflow">return</span> 0;</div> <div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="preprocessor">#else</span></div> <div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> _InterlockedExchangeAdd64(__ptr, __addend);</div> <div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="preprocessor"></span><span class="preprocessor">#elif defined(__GNUC__) && defined(__x86_64)</span></div> <div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> __atomic_fetch_add(__ptr, __addend, __ATOMIC_ACQ_REL);</div> <div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="preprocessor">#elif defined(__GNUC__) && defined(__i386) && \</span></div> <div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="preprocessor"> (defined(__i686) || defined(__pentium4) || defined(__athlon) \</span></div> <div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="preprocessor"> || defined(__k8) || defined(__core2))</span></div> <div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> __atomic_fetch_add(__ptr, __addend, __ATOMIC_ACQ_REL);</div> <div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="preprocessor">#elif defined(__SUNPRO_CC) && defined(__sparc)</span></div> <div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="preprocessor"></span> <span class="keyword">volatile</span> int64_t __before, __after;</div> <div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordflow">do</span></div> <div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  {</div> <div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  __before = *__ptr;</div> <div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  __after = __before + __addend;</div> <div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  } <span class="keywordflow">while</span> (atomic_cas_64((<span class="keyword">volatile</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span>*)__ptr, __before,</div> <div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  __after) != __before);</div> <div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">return</span> __before;</div> <div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="preprocessor">#else //fallback, slow</span></div> <div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="preprocessor"></span><span class="preprocessor">#if defined(__GNUC__) && defined(__i386)</span></div> <div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="preprocessor"></span> <span class="comment">// XXX doesn'__t work with -march=native</span></div> <div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="comment">//#warning "please compile with -march=i686 or better"</span></div> <div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="preprocessor"></span><span class="preprocessor">#pragma message("slow __fetch_and_add_64")</span></div> <div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="preprocessor"></span> int64_t __res;</div> <div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="preprocessor">#pragma omp critical</span></div> <div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="preprocessor"></span> {</div> <div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  __res = *__ptr;</div> <div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  *(__ptr) += __addend;</div> <div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  }</div> <div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordflow">return</span> __res;</div> <div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="preprocessor"></span> }</div> <div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="comment"></span></div> <div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="comment"> /** @brief Add a value to a variable, atomically.</span></div> <div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="comment"> *</span></div> <div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="comment"> * Implementation is heavily platform-dependent.</span></div> <div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="comment"> * @param __ptr Pointer to a signed integer.</span></div> <div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="comment"> * @param __addend Value to add.</span></div> <div class="line"><a name="l00183"></a><span class="lineno"> 183</span> <span class="comment"> */</span></div> <div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div> <div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="keyword">inline</span> _Tp</div> <div class="line"><a name="l00186"></a><span class="lineno"><a class="code" href="a01597.html#a56a5a84c8a6049cd3cc83968c6eae088"> 186</a></span>  <a class="code" href="a01597.html#a56a5a84c8a6049cd3cc83968c6eae088" title="Add a value to a variable, atomically.">__fetch_and_add</a>(<span class="keyword">volatile</span> _Tp* __ptr, _Tp __addend)</div> <div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  {</div> <div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordflow">if</span> (<span class="keyword">sizeof</span>(_Tp) == <span class="keyword">sizeof</span>(int32_t))</div> <div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keywordflow">return</span></div> <div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  (_Tp)<a class="code" href="a01597.html#a0ecb7402bccd099b51c28bcc64d57b68" title="Add a value to a variable, atomically.">__fetch_and_add_32</a>((<span class="keyword">volatile</span> int32_t*) __ptr, (int32_t)__addend);</div> <div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<span class="keyword">sizeof</span>(_Tp) == <span class="keyword">sizeof</span>(int64_t))</div> <div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordflow">return</span></div> <div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  (_Tp)<a class="code" href="a01597.html#aa87fd421e9f75ac83103ea48fabfa77f" title="Add a value to a variable, atomically.">__fetch_and_add_64</a>((<span class="keyword">volatile</span> int64_t*) __ptr, (int64_t)__addend);</div> <div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">else</span></div> <div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  _GLIBCXX_PARALLEL_ASSERT(<span class="keyword">false</span>);</div> <div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  }</div> <div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div> <div class="line"><a name="l00198"></a><span class="lineno"> 198</span> </div> <div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="preprocessor">#if defined(__ICC)</span></div> <div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _MustBeInt = <span class="keywordtype">int</span>></div> <div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keyword">inline</span> int32_t</div> <div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  __cas32(<span class="keyword">volatile</span> int32_t* __ptr, int32_t __old, int32_t __nw)</div> <div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  {</div> <div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  int32_t __before;</div> <div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  __asm__ __volatile__(<span class="stringliteral">"lock; cmpxchgl %1,%2"</span></div> <div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  : <span class="stringliteral">"=a"</span>(__before)</div> <div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  : <span class="stringliteral">"q"</span>(__nw), <span class="stringliteral">"__m"</span>(*(<span class="keyword">volatile</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span>*)(__ptr)),</div> <div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="stringliteral">"0"</span>(__old)</div> <div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  : <span class="stringliteral">"memory"</span>);</div> <div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">return</span> __before;</div> <div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  }</div> <div class="line"><a name="l00213"></a><span class="lineno"> 213</span> </div> <div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="preprocessor">#if defined(__x86_64)</span></div> <div class="line"><a name="l00215"></a><span class="lineno"> 215</span> <span class="preprocessor"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _MustBeInt = <span class="keywordtype">int</span>></div> <div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keyword">inline</span> int64_t</div> <div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  __cas64(<span class="keyword">volatile</span> int64_t *__ptr, int64_t __old, int64_t __nw)</div> <div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  {</div> <div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  int64_t __before;</div> <div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  __asm__ __volatile__(<span class="stringliteral">"lock; cmpxchgq %1,%2"</span></div> <div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  : <span class="stringliteral">"=a"</span>(__before)</div> <div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  : <span class="stringliteral">"q"</span>(__nw), <span class="stringliteral">"__m"</span>(*(<span class="keyword">volatile</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span>*)(__ptr)),</div> <div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="stringliteral">"0"</span>(__old)</div> <div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  : <span class="stringliteral">"memory"</span>);</div> <div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordflow">return</span> __before;</div> <div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  }</div> <div class="line"><a name="l00227"></a><span class="lineno"> 227</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00228"></a><span class="lineno"> 228</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00229"></a><span class="lineno"> 229</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00230"></a><span class="lineno"> 230</span> <span class="preprocessor"></span><span class="comment"></span></div> <div class="line"><a name="l00231"></a><span class="lineno"> 231</span> <span class="comment"> /** @brief Compare @c *__ptr and @c __comparand. If equal, let @c</span></div> <div class="line"><a name="l00232"></a><span class="lineno"> 232</span> <span class="comment"> * *__ptr=__replacement and return @c true, return @c false otherwise.</span></div> <div class="line"><a name="l00233"></a><span class="lineno"> 233</span> <span class="comment"> *</span></div> <div class="line"><a name="l00234"></a><span class="lineno"> 234</span> <span class="comment"> * Implementation is heavily platform-dependent.</span></div> <div class="line"><a name="l00235"></a><span class="lineno"> 235</span> <span class="comment"> * @param __ptr Pointer to 32-bit signed integer.</span></div> <div class="line"><a name="l00236"></a><span class="lineno"> 236</span> <span class="comment"> * @param __comparand Compare value.</span></div> <div class="line"><a name="l00237"></a><span class="lineno"> 237</span> <span class="comment"> * @param __replacement Replacement value.</span></div> <div class="line"><a name="l00238"></a><span class="lineno"> 238</span> <span class="comment"> */</span></div> <div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keyword">inline</span> <span class="keywordtype">bool</span></div> <div class="line"><a name="l00240"></a><span class="lineno"><a class="code" href="a01597.html#ab6820de0a0aa43aaf0d1fd22548c7f91"> 240</a></span>  <a class="code" href="a01597.html#ab6820de0a0aa43aaf0d1fd22548c7f91" title="Compare *__ptr and __comparand. If equal, let *__ptr=__replacement and return true, return false otherwise.">__compare_and_swap_32</a>(<span class="keyword">volatile</span> int32_t* __ptr, int32_t __comparand,</div> <div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  int32_t __replacement)</div> <div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  {</div> <div class="line"><a name="l00243"></a><span class="lineno"> 243</span> <span class="preprocessor">#if defined(__ICC) //x86 version</span></div> <div class="line"><a name="l00244"></a><span class="lineno"> 244</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> _InterlockedCompareExchange((<span class="keywordtype">void</span>*)__ptr, __replacement,</div> <div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  __comparand) == __comparand;</div> <div class="line"><a name="l00246"></a><span class="lineno"> 246</span> <span class="preprocessor">#elif defined(__ECC) //IA-64 version</span></div> <div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> _InterlockedCompareExchange((<span class="keywordtype">void</span>*)__ptr, __replacement,</div> <div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  __comparand) == __comparand;</div> <div class="line"><a name="l00249"></a><span class="lineno"> 249</span> <span class="preprocessor">#elif defined(__ICL) || defined(_MSC_VER)</span></div> <div class="line"><a name="l00250"></a><span class="lineno"> 250</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> _InterlockedCompareExchange(</div> <div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  reinterpret_cast<volatile long*>(__ptr),</div> <div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  __replacement, __comparand)</div> <div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  == __comparand;</div> <div class="line"><a name="l00254"></a><span class="lineno"> 254</span> <span class="preprocessor">#elif defined(__GNUC__)</span></div> <div class="line"><a name="l00255"></a><span class="lineno"> 255</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> __atomic_compare_exchange_n(__ptr, &__comparand, __replacement,</div> <div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="keyword">false</span>, __ATOMIC_ACQ_REL,</div> <div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  __ATOMIC_RELAXED);</div> <div class="line"><a name="l00258"></a><span class="lineno"> 258</span> <span class="preprocessor">#elif defined(__SUNPRO_CC) && defined(__sparc)</span></div> <div class="line"><a name="l00259"></a><span class="lineno"> 259</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> atomic_cas_32((<span class="keyword">volatile</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>*)__ptr, __comparand,</div> <div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  __replacement) == __comparand;</div> <div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="preprocessor">#else</span></div> <div class="line"><a name="l00262"></a><span class="lineno"> 262</span> <span class="preprocessor"></span><span class="preprocessor">#pragma message("slow __compare_and_swap_32")</span></div> <div class="line"><a name="l00263"></a><span class="lineno"> 263</span> <span class="preprocessor"></span> <span class="keywordtype">bool</span> __res = <span class="keyword">false</span>;</div> <div class="line"><a name="l00264"></a><span class="lineno"> 264</span> <span class="preprocessor">#pragma omp critical</span></div> <div class="line"><a name="l00265"></a><span class="lineno"> 265</span> <span class="preprocessor"></span> {</div> <div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="keywordflow">if</span> (*__ptr == __comparand)</div> <div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  {</div> <div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  *__ptr = __replacement;</div> <div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  __res = <span class="keyword">true</span>;</div> <div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  }</div> <div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  }</div> <div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="keywordflow">return</span> __res;</div> <div class="line"><a name="l00273"></a><span class="lineno"> 273</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00274"></a><span class="lineno"> 274</span> <span class="preprocessor"></span> }</div> <div class="line"><a name="l00275"></a><span class="lineno"> 275</span> <span class="comment"></span></div> <div class="line"><a name="l00276"></a><span class="lineno"> 276</span> <span class="comment"> /** @brief Compare @c *__ptr and @c __comparand. If equal, let @c</span></div> <div class="line"><a name="l00277"></a><span class="lineno"> 277</span> <span class="comment"> * *__ptr=__replacement and return @c true, return @c false otherwise.</span></div> <div class="line"><a name="l00278"></a><span class="lineno"> 278</span> <span class="comment"> *</span></div> <div class="line"><a name="l00279"></a><span class="lineno"> 279</span> <span class="comment"> * Implementation is heavily platform-dependent.</span></div> <div class="line"><a name="l00280"></a><span class="lineno"> 280</span> <span class="comment"> * @param __ptr Pointer to 64-bit signed integer.</span></div> <div class="line"><a name="l00281"></a><span class="lineno"> 281</span> <span class="comment"> * @param __comparand Compare value.</span></div> <div class="line"><a name="l00282"></a><span class="lineno"> 282</span> <span class="comment"> * @param __replacement Replacement value.</span></div> <div class="line"><a name="l00283"></a><span class="lineno"> 283</span> <span class="comment"> */</span></div> <div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="keyword">inline</span> <span class="keywordtype">bool</span></div> <div class="line"><a name="l00285"></a><span class="lineno"><a class="code" href="a01597.html#a412037b996221c3b30b6771ffda31ef7"> 285</a></span>  <a class="code" href="a01597.html#a412037b996221c3b30b6771ffda31ef7" title="Compare *__ptr and __comparand. If equal, let *__ptr=__replacement and return true, return false otherwise.">__compare_and_swap_64</a>(<span class="keyword">volatile</span> int64_t* __ptr, int64_t __comparand,</div> <div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  int64_t __replacement)</div> <div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  {</div> <div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <span class="preprocessor">#if defined(__ICC) && defined(__x86_64) //x86 version</span></div> <div class="line"><a name="l00289"></a><span class="lineno"> 289</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> __cas64<int>(__ptr, __comparand, __replacement) == __comparand;</div> <div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <span class="preprocessor">#elif defined(__ECC) //IA-64 version</span></div> <div class="line"><a name="l00291"></a><span class="lineno"> 291</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> _InterlockedCompareExchange64((<span class="keywordtype">void</span>*)__ptr, __replacement,</div> <div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  __comparand) == __comparand;</div> <div class="line"><a name="l00293"></a><span class="lineno"> 293</span> <span class="preprocessor">#elif defined(__ICL) || defined(_MSC_VER)</span></div> <div class="line"><a name="l00294"></a><span class="lineno"> 294</span> <span class="preprocessor"></span><span class="preprocessor">#ifndef _WIN64</span></div> <div class="line"><a name="l00295"></a><span class="lineno"> 295</span> <span class="preprocessor"></span> _GLIBCXX_PARALLEL_ASSERT(<span class="keyword">false</span>); <span class="comment">//not available in this case</span></div> <div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <span class="keywordflow">return</span> 0;</div> <div class="line"><a name="l00297"></a><span class="lineno"> 297</span> <span class="preprocessor">#else</span></div> <div class="line"><a name="l00298"></a><span class="lineno"> 298</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> _InterlockedCompareExchange64(__ptr, __replacement,</div> <div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  __comparand) == __comparand;</div> <div class="line"><a name="l00300"></a><span class="lineno"> 300</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00301"></a><span class="lineno"> 301</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00302"></a><span class="lineno"> 302</span> <span class="preprocessor">#elif defined(__GNUC__) && defined(__x86_64)</span></div> <div class="line"><a name="l00303"></a><span class="lineno"> 303</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> __atomic_compare_exchange_n(__ptr, &__comparand, __replacement,</div> <div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keyword">false</span>, __ATOMIC_ACQ_REL,</div> <div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  __ATOMIC_RELAXED);</div> <div class="line"><a name="l00306"></a><span class="lineno"> 306</span> <span class="preprocessor">#elif defined(__GNUC__) && defined(__i386) && \</span></div> <div class="line"><a name="l00307"></a><span class="lineno"> 307</span> <span class="preprocessor"> (defined(__i686) || defined(__pentium4) || defined(__athlon) \</span></div> <div class="line"><a name="l00308"></a><span class="lineno"> 308</span> <span class="preprocessor"> || defined(__k8) || defined(__core2))</span></div> <div class="line"><a name="l00309"></a><span class="lineno"> 309</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> __atomic_compare_exchange_n(__ptr, &__comparand, __replacement,</div> <div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="keyword">false</span>, __ATOMIC_ACQ_REL,</div> <div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  __ATOMIC_RELAXED);</div> <div class="line"><a name="l00312"></a><span class="lineno"> 312</span> <span class="preprocessor">#elif defined(__SUNPRO_CC) && defined(__sparc)</span></div> <div class="line"><a name="l00313"></a><span class="lineno"> 313</span> <span class="preprocessor"></span> <span class="keywordflow">return</span> atomic_cas_64((<span class="keyword">volatile</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span>*)__ptr,</div> <div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  __comparand, __replacement) == __comparand;</div> <div class="line"><a name="l00315"></a><span class="lineno"> 315</span> <span class="preprocessor">#else</span></div> <div class="line"><a name="l00316"></a><span class="lineno"> 316</span> <span class="preprocessor"></span><span class="preprocessor">#if defined(__GNUC__) && defined(__i386)</span></div> <div class="line"><a name="l00317"></a><span class="lineno"> 317</span> <span class="preprocessor"></span> <span class="comment">// XXX -march=native</span></div> <div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="comment">//#warning "please compile with -march=i686 or better"</span></div> <div class="line"><a name="l00319"></a><span class="lineno"> 319</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00320"></a><span class="lineno"> 320</span> <span class="preprocessor"></span><span class="preprocessor">#pragma message("slow __compare_and_swap_64")</span></div> <div class="line"><a name="l00321"></a><span class="lineno"> 321</span> <span class="preprocessor"></span> <span class="keywordtype">bool</span> __res = <span class="keyword">false</span>;</div> <div class="line"><a name="l00322"></a><span class="lineno"> 322</span> <span class="preprocessor">#pragma omp critical</span></div> <div class="line"><a name="l00323"></a><span class="lineno"> 323</span> <span class="preprocessor"></span> {</div> <div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="keywordflow">if</span> (*__ptr == __comparand)</div> <div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  {</div> <div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  *__ptr = __replacement;</div> <div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  __res = <span class="keyword">true</span>;</div> <div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  }</div> <div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  }</div> <div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="keywordflow">return</span> __res;</div> <div class="line"><a name="l00331"></a><span class="lineno"> 331</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00332"></a><span class="lineno"> 332</span> <span class="preprocessor"></span> }</div> <div class="line"><a name="l00333"></a><span class="lineno"> 333</span> <span class="comment"></span></div> <div class="line"><a name="l00334"></a><span class="lineno"> 334</span> <span class="comment"> /** @brief Compare @c *__ptr and @c __comparand. If equal, let @c</span></div> <div class="line"><a name="l00335"></a><span class="lineno"> 335</span> <span class="comment"> * *__ptr=__replacement and return @c true, return @c false otherwise.</span></div> <div class="line"><a name="l00336"></a><span class="lineno"> 336</span> <span class="comment"> *</span></div> <div class="line"><a name="l00337"></a><span class="lineno"> 337</span> <span class="comment"> * Implementation is heavily platform-dependent.</span></div> <div class="line"><a name="l00338"></a><span class="lineno"> 338</span> <span class="comment"> * @param __ptr Pointer to signed integer.</span></div> <div class="line"><a name="l00339"></a><span class="lineno"> 339</span> <span class="comment"> * @param __comparand Compare value.</span></div> <div class="line"><a name="l00340"></a><span class="lineno"> 340</span> <span class="comment"> * @param __replacement Replacement value. */</span></div> <div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div> <div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <span class="keyword">inline</span> <span class="keywordtype">bool</span></div> <div class="line"><a name="l00343"></a><span class="lineno"><a class="code" href="a01597.html#accd4441e0f846fee44966195a91e9e68"> 343</a></span>  <a class="code" href="a01597.html#accd4441e0f846fee44966195a91e9e68" title="Compare *__ptr and __comparand. If equal, let *__ptr=__replacement and return true, return false otherwise.">__compare_and_swap</a>(<span class="keyword">volatile</span> _Tp* __ptr, _Tp __comparand, _Tp __replacement)</div> <div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  {</div> <div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="keywordflow">if</span> (<span class="keyword">sizeof</span>(_Tp) == <span class="keyword">sizeof</span>(int32_t))</div> <div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keywordflow">return</span> <a class="code" href="a01597.html#ab6820de0a0aa43aaf0d1fd22548c7f91" title="Compare *__ptr and __comparand. If equal, let *__ptr=__replacement and return true, return false otherwise.">__compare_and_swap_32</a>((<span class="keyword">volatile</span> int32_t*) __ptr,</div> <div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  (int32_t)__comparand,</div> <div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  (int32_t)__replacement);</div> <div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<span class="keyword">sizeof</span>(_Tp) == <span class="keyword">sizeof</span>(int64_t))</div> <div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  <span class="keywordflow">return</span> <a class="code" href="a01597.html#a412037b996221c3b30b6771ffda31ef7" title="Compare *__ptr and __comparand. If equal, let *__ptr=__replacement and return true, return false otherwise.">__compare_and_swap_64</a>((<span class="keyword">volatile</span> int64_t*) __ptr,</div> <div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  (int64_t)__comparand,</div> <div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  (int64_t)__replacement);</div> <div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="keywordflow">else</span></div> <div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  _GLIBCXX_PARALLEL_ASSERT(<span class="keyword">false</span>);</div> <div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  }</div> <div class="line"><a name="l00356"></a><span class="lineno"> 356</span> <span class="comment"></span></div> <div class="line"><a name="l00357"></a><span class="lineno"> 357</span> <span class="comment"> /** @brief Yield the control to another thread, without waiting for</span></div> <div class="line"><a name="l00358"></a><span class="lineno"> 358</span> <span class="comment"> the end to the time slice. */</span></div> <div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span></div> <div class="line"><a name="l00360"></a><span class="lineno"><a class="code" href="a01597.html#aaa76236af73146ae89f726921bc3f2cb"> 360</a></span>  <a class="code" href="a01597.html#aaa76236af73146ae89f726921bc3f2cb" title="Yield the control to another thread, without waiting for the end to the time slice.">__yield</a>()</div> <div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  {</div> <div class="line"><a name="l00362"></a><span class="lineno"> 362</span> <span class="preprocessor">#if defined (_WIN32) && !defined (__CYGWIN__)</span></div> <div class="line"><a name="l00363"></a><span class="lineno"> 363</span> <span class="preprocessor"></span> Sleep(0);</div> <div class="line"><a name="l00364"></a><span class="lineno"> 364</span> <span class="preprocessor">#else</span></div> <div class="line"><a name="l00365"></a><span class="lineno"> 365</span> <span class="preprocessor"></span> sched_yield();</div> <div class="line"><a name="l00366"></a><span class="lineno"> 366</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00367"></a><span class="lineno"> 367</span> <span class="preprocessor"></span> }</div> <div class="line"><a name="l00368"></a><span class="lineno"> 368</span> } <span class="comment">// end namespace</span></div> <div class="line"><a name="l00369"></a><span class="lineno"> 369</span> </div> <div class="line"><a name="l00370"></a><span class="lineno"> 370</span> <span class="preprocessor">#endif </span><span class="comment">/* _GLIBCXX_PARALLEL_COMPATIBILITY_H */</span><span class="preprocessor"></span></div> </div><!-- fragment --></div><!-- contents --> </div><!-- doc-content --> <!-- start footer part --> <div id="nav-path" class="navpath"><!-- id is needed for treeview function! --> <ul> <li class="navelem"><a class="el" href="dir_9fd2c24bcafa2f71ff52c79e6ae82b6c.html">include</a></li><li class="navelem"><a class="el" href="dir_c2e03790883e78ac9940042178d6c74e.html">parallel</a></li><li class="navelem"><a class="el" href="a01047.html">compatibility.h</a></li> <li class="footer">Generated by <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.3 </li> </ul> </div> </body> </html>