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<!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 1.8.5"/> <title>GEOS: timeval.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="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">GEOS  <span id="projectnumber">3.5.0</span> </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.8.5 --> <div id="navrow1" class="tabs"> <ul class="tablist"> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> <li><a href="namespaces.html"><span>Namespaces</span></a></li> <li><a href="annotated.html"><span>Classes</span></a></li> <li class="current"><a href="files.html"><span>Files</span></a></li> </ul> </div> <div id="navrow2" class="tabs2"> <ul class="tablist"> <li><a href="files.html"><span>File List</span></a></li> </ul> </div> <div id="nav-path" class="navpath"> <ul> <li class="navelem"><a class="el" href="dir_78009f08da3e03d86b70776dcc463e92.html">include</a></li><li class="navelem"><a class="el" href="dir_40c9e98f0599f998dfc16f8b0ec4bf37.html">geos</a></li> </ul> </div> </div><!-- top --> <div class="header"> <div class="headertitle"> <div class="title">timeval.h</div> </div> </div><!--header--> <div class="contents"> <div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/**********************************************************************</span></div> <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> *</span></div> <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * GEOS - Geometry Engine Open Source</span></div> <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * http://geos.osgeo.org</span></div> <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div> <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * Copyright (C) 2006 Wu Yongwei</span></div> <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> *</span></div> <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * This is free software; you can redistribute and/or modify it under</span></div> <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * the terms of the GNU Lesser General Public Licence as published</span></div> <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * by the Free Software Foundation. </span></div> <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * See the COPYING file for more information.</span></div> <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> *</span></div> <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * Note: This code is in the public domain, see </span></div> <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * http://wyw.dcweb.cn/time.htm</span></div> <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> *</span></div> <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> **********************************************************************/</span></div> <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div> <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#ifndef GEOS_TIMEVAL_H</span></div> <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor"></span><span class="preprocessor">#define GEOS_TIMEVAL_H</span></div> <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#ifndef WIN32_LEAN_AND_MEAN</span></div> <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor"></span><span class="preprocessor">#define WIN32_LEAN_AND_MEAN</span></div> <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div> <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <winsock2.h></span></div> <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <time.h></span></div> <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div> <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#if defined(_MSC_VER) || defined(__BORLANDC__)</span></div> <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor"></span><span class="preprocessor">#define EPOCHFILETIME (116444736000000000i64)</span></div> <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor"></span><span class="preprocessor">#else</span></div> <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor"></span><span class="preprocessor">#define EPOCHFILETIME (116444736000000000LL)</span></div> <div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div> <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">struct </span>timezone {</div> <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keywordtype">int</span> tz_minuteswest; <span class="comment">/* minutes W of Greenwich */</span></div> <div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordtype">int</span> tz_dsttime; <span class="comment">/* type of dst correction */</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> </div> <div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div> <div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#if !defined(_WIN32_WCE)</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> __inline <span class="keywordtype">int</span> gettimeofday(<span class="keyword">struct</span> timeval *tv, <span class="keyword">struct</span> timezone *tz)</div> <div class="line"><a name="l00043"></a><span class="lineno"> 43</span> {</div> <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  FILETIME ft;</div> <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  LARGE_INTEGER li;</div> <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  __int64 t;</div> <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> tzflag;</div> <div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div> <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">if</span> (tv)</div> <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  {</div> <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  GetSystemTimeAsFileTime(&ft);</div> <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  li.LowPart = ft.dwLowDateTime;</div> <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  li.HighPart = ft.dwHighDateTime;</div> <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  t = li.QuadPart; <span class="comment">/* In 100-nanosecond intervals */</span></div> <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  t -= EPOCHFILETIME; <span class="comment">/* Offset to the Epoch time */</span></div> <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  t /= 10; <span class="comment">/* In microseconds */</span></div> <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  tv->tv_sec = (long)(t / 1000000);</div> <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  tv->tv_usec = (long)(t % 1000000);</div> <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  }</div> <div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div> <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">if</span> (tz)</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="keywordflow">if</span> (!tzflag)</div> <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  {</div> <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  _tzset();</div> <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  tzflag++;</div> <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  }</div> <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  tz->tz_minuteswest = _timezone / 60;</div> <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  tz->tz_dsttime = _daylight;</div> <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  }</div> <div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div> <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">return</span> 0;</div> <div class="line"><a name="l00073"></a><span class="lineno"> 73</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">#else</span></div> <div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00077"></a><span class="lineno"> 77</span> __inline <span class="keywordtype">int</span> gettimeofday(<span class="keyword">struct</span> timeval *tv, <span class="keyword">struct</span> timezone *tz)</div> <div class="line"><a name="l00078"></a><span class="lineno"> 78</span> {</div> <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  SYSTEMTIME st;</div> <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  FILETIME ft;</div> <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  LARGE_INTEGER li;</div> <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  TIME_ZONE_INFORMATION tzi;</div> <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  __int64 t;</div> <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> tzflag;</div> <div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div> <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">if</span> (tv)</div> <div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  {</div> <div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  GetSystemTime(&st);</div> <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  SystemTimeToFileTime(&st, &ft);</div> <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  li.LowPart = ft.dwLowDateTime;</div> <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  li.HighPart = ft.dwHighDateTime;</div> <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  t = li.QuadPart; <span class="comment">/* In 100-nanosecond intervals */</span></div> <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  t -= EPOCHFILETIME; <span class="comment">/* Offset to the Epoch time */</span></div> <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  t /= 10; <span class="comment">/* In microseconds */</span></div> <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  tv->tv_sec = (long)(t / 1000000);</div> <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  tv->tv_usec = (long)(t % 1000000);</div> <div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  }</div> <div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div> <div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">if</span> (tz)</div> <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  { </div> <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  GetTimeZoneInformation(&tzi);</div> <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  </div> <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  tz->tz_minuteswest = tzi.Bias;</div> <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">if</span> (tzi.StandardDate.wMonth != 0)</div> <div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  {</div> <div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  tz->tz_minuteswest += tzi.StandardBias * 60;</div> <div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  }</div> <div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div> <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordflow">if</span> (tzi.DaylightDate.wMonth != 0)</div> <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  {</div> <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  tz->tz_dsttime = 1;</div> <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  }</div> <div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">else</span></div> <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  {</div> <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  tz->tz_dsttime = 0;</div> <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  }</div> <div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  }</div> <div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div> <div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordflow">return</span> 0;</div> <div class="line"><a name="l00120"></a><span class="lineno"> 120</span> }</div> <div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div> <div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="preprocessor">#endif </span><span class="comment">/* _WIN32_WCE */</span><span class="preprocessor"></span></div> <div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="preprocessor">#endif </span><span class="comment">/* GEOS_TIMEVAL_H */</span><span class="preprocessor"></span></div> </div><!-- fragment --></div><!-- contents --> <!-- start footer part --> <hr class="footer"/><address class="footer"><small> Generated by  <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/> </a> 1.8.5 </small></address> </body> </html>