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| <div class="title">bootid.hpp</div> </div> |
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| <a href="windows_2bootid_8hpp.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">// Licensed under the Apache License, Version 2.0 (the "License");</span></div> |
| <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// you may not use this file except in compliance with the License.</span></div> |
| <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// You may obtain a copy of the License at</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">// http://www.apache.org/licenses/LICENSE-2.0</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">// Unless required by applicable law or agreed to in writing, software</span></div> |
| <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div> |
| <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div> |
| <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// See the License for the specific language governing permissions and</span></div> |
| <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// limitations under the License.</span></div> |
| <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div> |
| <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#ifndef __STOUT_OS_WINDOWS_BOOTID_HPP__</span></div> |
| <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor"></span><span class="preprocessor">#define __STOUT_OS_WINDOWS_BOOTID_HPP__</span></div> |
| <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor"></span></div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <chrono></span></div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <string></span></div> |
| <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include <<a class="code" href="stringify_8hpp.html">stout/stringify.hpp</a>></span></div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <<a class="code" href="try_8hpp.html">stout/try.hpp</a>></span></div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div> |
| <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">namespace </span>os {</div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">inline</span> <a class="code" href="classTry.html">Try<std::string></a> <a class="code" href="namespaceos.html#ab4d56d19b1f9ff0d24d936327ae77b22">bootId</a>()</div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> {</div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="comment">// NOTE: we follow the precedent of the OS X design here and use the boot</span></div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="comment">// time in seconds since the Unix epoch as a boot ID. See comment in</span></div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="comment">// `stout/os/posix/bootid.hpp` for discussion of this approach. Note also</span></div> |
| <div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="comment">// that we can't use milliseconds here instead of seconds because the</span></div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="comment">// relatively high imprecision of millisecond resolution would cause `bootId`</span></div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="comment">// to return a different number nearly every time it was called.</span></div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  std::chrono::milliseconds uptime =</div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  std::chrono::milliseconds(GetTickCount64());</div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  std::chrono::system_clock::time_point now = std::chrono::system_clock::now();</div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  std::chrono::system_clock::time_point boot_time = now - uptime;</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="keywordtype">long</span> <span class="keywordtype">long</span> boot_time_secs = std::chrono::duration_cast<std::chrono::seconds>(</div> |
| <div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  boot_time.time_since_epoch()).count();</div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordflow">return</span> <a class="code" href="namespacens.html#a28116b46e6543597a11733424cd1aa20">stringify</a>(boot_time_secs);</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> </div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span> } <span class="comment">// namespace os {</span></div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor">#endif // __STOUT_OS_WINDOWS_BOOTID_HPP__</span></div> |
| <div class="ttc" id="namespaceos_html_ab4d56d19b1f9ff0d24d936327ae77b22"><div class="ttname"><a href="namespaceos.html#ab4d56d19b1f9ff0d24d936327ae77b22">os::bootId</a></div><div class="ttdeci">Try< std::string > bootId()</div><div class="ttdef"><b>Definition:</b> bootid.hpp:33</div></div> |
| <div class="ttc" id="classTry_html"><div class="ttname"><a href="classTry.html">Try</a></div><div class="ttdef"><b>Definition:</b> try.hpp:34</div></div> |
| <div class="ttc" id="stringify_8hpp_html"><div class="ttname"><a href="stringify_8hpp.html">stringify.hpp</a></div></div> |
| <div class="ttc" id="try_8hpp_html"><div class="ttname"><a href="try_8hpp.html">try.hpp</a></div></div> |
| <div class="ttc" id="namespacens_html_a28116b46e6543597a11733424cd1aa20"><div class="ttname"><a href="namespacens.html#a28116b46e6543597a11733424cd1aa20">ns::stringify</a></div><div class="ttdeci">std::string stringify(int flags)</div><div class="ttdef"><b>Definition:</b> ns.hpp:688</div></div> |
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