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<div id="projectname">libaaruformat<span id="projectnumber"> 1.0</span>
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<div id="projectbrief">Aaru Data Preservation Suite - Format Library</div>
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<div class="headertitle"><div class="title">time.c</div></div>
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<a href="time_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*</span></div>
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<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> * This file is part of the Aaru Data Preservation Suite.</span></div>
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<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> * Copyright (c) 2019-2025 Natalia Portillo.</span></div>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> *</span></div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> * This library is free software; you can redistribute it and/or modify</span></div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> * it under the terms of the GNU Lesser General Public License as</span></div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> * published by the Free Software Foundation; either version 2.1 of the</span></div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> * License, or (at your option) any later version.</span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment"> *</span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment"> * This library is distributed in the hope that it will be useful, but</span></div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="comment"> * Lesser General Public License for more details.</span></div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="comment"> *</span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment"> * You should have received a copy of the GNU Lesser General Public</span></div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment"> * License along with this library; if not, see <http://www.gnu.org/licenses/>.</span></div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment"> */</span></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> </div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include <stddef.h></span></div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#include <stdint.h></span></div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> </div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#ifdef _WIN32</span></div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include <windows.h></span></div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> </div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span>uint64_t <a class="code hl_function" href="time_8c.html#a36c1cca0e4cea9c2e0dffb582b836f6f">get_filetime_uint64</a>()</div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span>{</div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> FILETIME ft;</div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> SYSTEMTIME st;</div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> GetSystemTime(&st); <span class="comment">// UTC time</span></div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> SystemTimeToFileTime(&st, &ft);</div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> <span class="keywordflow">return</span> ((uint64_t)ft.dwHighDateTime << 32) | ft.dwLowDateTime;</div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span>}</div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> </div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="preprocessor">#else</span></div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="preprocessor">#include <sys/time.h></span></div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span></div>
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<div class="foldopen" id="foldopen00045" data-start="{" data-end="}">
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"><a class="line" href="internal_8h.html#a36c1cca0e4cea9c2e0dffb582b836f6f"> 45</a></span>uint64_t <a class="code hl_function" href="time_8c.html#a36c1cca0e4cea9c2e0dffb582b836f6f">get_filetime_uint64</a>()</div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span>{</div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <span class="keyword">struct </span>timeval tv;</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> gettimeofday(&tv, NULL); <span class="comment">// seconds + microseconds since 1970</span></div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> </div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <span class="keyword">const</span> uint64_t epoch_diff = 11644473600ULL; <span class="comment">// seconds between 1601 and 1970</span></div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> uint64_t ft = (tv.tv_sec + epoch_diff) * 10000000ULL + tv.tv_usec * 10;</div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <span class="keywordflow">return</span> ft;</div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span>}</div>
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</div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span><span class="preprocessor">#endif</span></div>
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<div class="ttc" id="atime_8c_html_a36c1cca0e4cea9c2e0dffb582b836f6f"><div class="ttname"><a href="time_8c.html#a36c1cca0e4cea9c2e0dffb582b836f6f">get_filetime_uint64</a></div><div class="ttdeci">uint64_t get_filetime_uint64()</div><div class="ttdoc">Gets the current time as a 64-bit FILETIME value.</div><div class="ttdef"><b>Definition</b> <a href="#l00045">time.c:45</a></div></div>
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