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<div class="headertitle"><div class="title">vlog_is_on.h</div></div>
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<a href="vlog__is__on_8h.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">// Copyright 2010-2021 Google LLC</span></div>
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<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div>
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<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment">// you may not use this file except in compliance with the License.</span></div>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment">// You may obtain a copy of the License at</span></div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment">//</span></div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment">//</span></div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment">// See the License for the specific language governing permissions and</span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment">// limitations under the License.</span></div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> </div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#ifndef OR_TOOLS_BASE_VLOG_IS_ON_H_</span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#define OR_TOOLS_BASE_VLOG_IS_ON_H_</span></div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span> </div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#include "<a class="code" href="integral__types_8h.html">ortools/base/integral_types.h</a>"</span></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="preprocessor">#include "<a class="code" href="log__severity_8h.html">ortools/base/log_severity.h</a>"</span></div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> </div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespacegoogle.html">google</a> {</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">#if defined(__GNUC__)</span></div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="comment">// We emit an anonymous static int* variable at every VLOG_IS_ON(n) site.</span></div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="comment">// (Normally) the first time every VLOG_IS_ON(n) site is hit,</span></div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="comment">// we determine what variable will dynamically control logging at this site:</span></div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="comment">// it's either absl::GetFlag(FLAGS_v) or an appropriate internal variable</span></div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="comment">// matching the current source file that represents results of</span></div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="comment">// parsing of --vmodule flag and/or SetVLOGLevel calls.</span></div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="preprocessor">#define VLOG_IS_ON(verboselevel) \</span></div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="preprocessor"> __extension__({ \</span></div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="preprocessor"> static bool vmodule_initialized__ = false; \</span></div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="preprocessor"> static int32_t* vmodule_info__ = nullptr; \</span></div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="preprocessor"> int32_t verbose_level__ = (verboselevel); \</span></div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="preprocessor"> (vmodule_initialized__ \</span></div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="preprocessor"> ? (vmodule_info__ == nullptr \</span></div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span><span class="preprocessor"> ? absl::GetFlag(FLAGS_v) >= verbose_level__ \</span></div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="preprocessor"> : *vmodule_info__ >= verbose_level__) \</span></div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="preprocessor"> : google::InitVLOG3__(&vmodule_info__, &vmodule_initialized__, \</span></div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span><span class="preprocessor"> __FILE__, verbose_level__)); \</span></div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span><span class="preprocessor"> })</span></div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span><span class="preprocessor">#else</span></div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span><span class="comment">// GNU extensions not available, so we do not support --vmodule.</span></div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span><span class="comment">// Dynamic value of absl::GetFlag(FLAGS_v) always controls the logging level.</span></div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"><a class="line" href="vlog__is__on_8h.html#a956152cad330225654d128f35c00efce"> 44</a></span><span class="preprocessor">#define VLOG_IS_ON(verboselevel) (absl::GetFlag(FLAGS_v) >= (verboselevel))</span></div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span><span class="preprocessor">#endif</span></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="comment">// Set VLOG(_IS_ON) level for module_pattern to log_level.</span></div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span><span class="comment">// This lets us dynamically control what is normally set by the --vmodule flag.</span></div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span><span class="comment">// Returns the level that previously applied to module_pattern.</span></div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span><span class="comment">// NOTE: To change the log level for VLOG(_IS_ON) sites</span></div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span><span class="comment">// that have already executed after/during InitGoogleLogging,</span></div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span><span class="comment">//. one needs to supply the exact --vmodule pattern that applied to them.</span></div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span><span class="comment">// (If no --vmodule pattern applied to them</span></div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span><span class="comment">// the value of FLAGS_v will continue to control them.)</span></div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span><span class="keyword">extern</span> <a class="code hl_define" href="logging__export_8h.html#a980c97856a47502c2877b93460f44f87">GOOGLE_GLOG_DLL_DECL</a> <span class="keywordtype">int</span> <a class="code hl_function" href="namespacegoogle.html#ae10ec63d828053e42aa69b1d531602d7">SetVLOGLevel</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* module_pattern,</div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> <span class="keywordtype">int</span> log_level);</div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> </div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span><span class="comment">// Various declarations needed for VLOG_IS_ON above: =========================</span></div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> </div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span><span class="comment">// Special value used to indicate that a VLOG_IS_ON site has not been</span></div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span><span class="comment">// initialized. We make this a large value, so the common-case check</span></div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span><span class="comment">// of "*vlocal__ >= verbose_level__" in VLOG_IS_ON definition</span></div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span><span class="comment">// passes in such cases and InitVLOG3__ is then triggered.</span></div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span><span class="keyword">extern</span> int32_t <a class="code hl_variable" href="namespacegoogle.html#a19c4fdc6f7943ab1c9bf25f17ec06776">kLogSiteUninitialized</a>;</div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> </div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span><span class="comment">// Helper routine which determines the logging info for a particalur VLOG site.</span></div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span><span class="comment">// get_level is a function that returns the log level</span></div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span><span class="comment">// initialized is a boolean value that tells if vmodule was initialized</span></div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span><span class="comment">// for that file.</span></div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span><span class="comment">// fname is the current source file name</span></div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span><span class="comment">// verbose_level is the argument to VLOG_IS_ON</span></div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span><span class="comment">// We will return the return value for VLOG_IS_ON</span></div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span><span class="comment">// and if possible set *site_flag appropriately.</span></div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span><span class="keyword">extern</span> <a class="code hl_define" href="logging__export_8h.html#a980c97856a47502c2877b93460f44f87">GOOGLE_GLOG_DLL_DECL</a> <span class="keywordtype">bool</span> <a class="code hl_function" href="namespacegoogle.html#af4e3bf4316ad170bea8c7598e5ac3f1d">InitVLOG3__</a>(int32_t** vmodule_info,</div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="keywordtype">bool</span>* initialized,</div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* fname,</div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> int32_t verbose_level);</div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> </div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span>} <span class="comment">// namespace google</span></div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> </div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span><span class="preprocessor">#endif </span><span class="comment">// OR_TOOLS_BASE_VLOG_IS_ON_H_</span></div>
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<div class="ttc" id="aintegral__types_8h_html"><div class="ttname"><a href="integral__types_8h.html">integral_types.h</a></div></div>
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<div class="ttc" id="alog__severity_8h_html"><div class="ttname"><a href="log__severity_8h.html">log_severity.h</a></div></div>
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<div class="ttc" id="alogging__export_8h_html_a980c97856a47502c2877b93460f44f87"><div class="ttname"><a href="logging__export_8h.html#a980c97856a47502c2877b93460f44f87">GOOGLE_GLOG_DLL_DECL</a></div><div class="ttdeci">#define GOOGLE_GLOG_DLL_DECL</div><div class="ttdef"><b>Definition:</b> <a href="logging__export_8h_source.html#l00027">logging_export.h:27</a></div></div>
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<div class="ttc" id="anamespacegoogle_html"><div class="ttname"><a href="namespacegoogle.html">google</a></div><div class="ttdef"><b>Definition:</b> <a href="log__severity_8h_source.html#l00024">log_severity.h:24</a></div></div>
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<div class="ttc" id="anamespacegoogle_html_a19c4fdc6f7943ab1c9bf25f17ec06776"><div class="ttname"><a href="namespacegoogle.html#a19c4fdc6f7943ab1c9bf25f17ec06776">google::kLogSiteUninitialized</a></div><div class="ttdeci">int32_t kLogSiteUninitialized</div><div class="ttdef"><b>Definition:</b> <a href="vlog__is__on_8cc_source.html#l00085">vlog_is_on.cc:85</a></div></div>
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<div class="ttc" id="anamespacegoogle_html_ae10ec63d828053e42aa69b1d531602d7"><div class="ttname"><a href="namespacegoogle.html#ae10ec63d828053e42aa69b1d531602d7">google::SetVLOGLevel</a></div><div class="ttdeci">int SetVLOGLevel(const char *module_pattern, int log_level)</div><div class="ttdef"><b>Definition:</b> <a href="vlog__is__on_8cc_source.html#l00147">vlog_is_on.cc:147</a></div></div>
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<div class="ttc" id="anamespacegoogle_html_af4e3bf4316ad170bea8c7598e5ac3f1d"><div class="ttname"><a href="namespacegoogle.html#af4e3bf4316ad170bea8c7598e5ac3f1d">google::InitVLOG3__</a></div><div class="ttdeci">bool InitVLOG3__(int32_t **vmodule_info, bool *initialized, const char *fname, int32_t verbose_level)</div><div class="ttdef"><b>Definition:</b> <a href="vlog__is__on_8cc_source.html#l00182">vlog_is_on.cc:182</a></div></div>
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