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<div class="title">time_limit.cc</div> </div>
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<a href="time__limit_8cc.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">// Copyright 2010-2018 Google LLC</span></div>
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<div class="line"><a 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 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 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 name="l00005"></a><span class="lineno"> 5</span> <span class="comment">//</span></div>
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<div class="line"><a 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 name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div>
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<div class="line"><a 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 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 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 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 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 name="l00013"></a><span class="lineno"> 13</span>  </div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "<a class="code" href="time__limit_8h.html">ortools/util/time_limit.h</a>"</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  </div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include "absl/strings/str_cat.h"</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  </div>
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<div class="line"><a name="l00018"></a><span class="lineno"><a class="line" href="time__limit_8cc.html#ace49ac4cd148fa1295f874fd177cf5ff"> 18</a></span> <a class="code" href="time__limit_8cc.html#ace49ac4cd148fa1295f874fd177cf5ff">DEFINE_bool</a>(time_limit_use_usertime, <span class="keyword">false</span>,</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  <span class="stringliteral">"If true, rely on the user time in the TimeLimit class. This is "</span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  <span class="stringliteral">"only recommended for benchmarking on a non-isolated environment."</span>);</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  </div>
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<div class="line"><a name="l00022"></a><span class="lineno"><a class="line" href="time__limit_8cc.html#afb208d14ec977589c97c09761fd5caec"> 22</a></span> <a class="code" href="time__limit_8cc.html#ace49ac4cd148fa1295f874fd177cf5ff">DEFINE_bool</a>(time_limit_use_instruction_count, <span class="keyword">false</span>,</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  <span class="stringliteral">"If true, measures the number of instructions executed"</span>);</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  </div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">namespace </span><a class="code" href="namespaceoperations__research.html">operations_research</a> {</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  </div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment">// static constants.</span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="classoperations__research_1_1_time_limit.html#a1837453fa693143e6ec334701557a448">TimeLimit::kSafetyBufferSeconds</a> = 1e-4;</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="classoperations__research_1_1_time_limit.html#ac62fbbc5383a86a9fe334e3213f6244b">TimeLimit::kHistorySize</a> = 100;</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  </div>
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<div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="classoperations__research_1_1_time_limit.html#a764be64f3029f8b8e23511061d8de355"> 31</a></span> std::string <a class="code" href="classoperations__research_1_1_time_limit.html#a764be64f3029f8b8e23511061d8de355">TimeLimit::DebugString</a>()<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  std::string buffer = absl::StrCat(</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="stringliteral">"Time left: "</span>, (<a class="code" href="classoperations__research_1_1_time_limit.html#a4273b83b06bfbf856393db6d0a9b8715">GetTimeLeft</a>()),</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="stringliteral">"\nDeterministic time left: "</span>, (<a class="code" href="classoperations__research_1_1_time_limit.html#a362a88bfe50d83c028154a62ef53e780">GetDeterministicTimeLeft</a>()),</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="stringliteral">"\nElapsed time: "</span>, (<a class="code" href="classoperations__research_1_1_time_limit.html#ae3fe2e2b613455b49c6cc74dd3c7581e">GetElapsedTime</a>()),</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="stringliteral">"\nElapsed deterministic time: "</span>, (<a class="code" href="classoperations__research_1_1_time_limit.html#ac7e861414a70fc937d18bc7ca743fc98">GetElapsedDeterministicTime</a>()));</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#ifndef NDEBUG</span></div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& counter : deterministic_counters_) {</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keyword">const</span> std::string& counter_name = counter.first;</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> counter_value = counter.second;</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  absl::StrAppend(&buffer, <span class="stringliteral">"\n"</span>, counter_name, <span class="stringliteral">": "</span>, (counter_value));</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  }</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor">#endif</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">return</span> buffer;</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> }</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  </div>
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<div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="classoperations__research_1_1_nested_time_limit.html#af23d2dc1b291081b642a728cf0033987"> 47</a></span> <a class="code" href="classoperations__research_1_1_nested_time_limit.html#af23d2dc1b291081b642a728cf0033987">NestedTimeLimit::NestedTimeLimit</a>(<a class="code" href="classoperations__research_1_1_time_limit.html">TimeLimit</a>* base_time_limit,</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordtype">double</span> limit_in_seconds,</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordtype">double</span> deterministic_limit)</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  : base_time_limit_(<a class="code" href="base_2logging_8h.html#aeef651f886eb5252c08835194213efe2">ABSL_DIE_IF_NULL</a>(base_time_limit)),</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  time_limit_(std::<a class="code" href="alldiff__cst_8cc.html#a021e695f54a13bd809c34b2f4ca87c37">min</a>(base_time_limit_->GetTimeLeft(), limit_in_seconds),</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  std::<a class="code" href="alldiff__cst_8cc.html#a021e695f54a13bd809c34b2f4ca87c37">min</a>(base_time_limit_->GetDeterministicTimeLeft(),</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  deterministic_limit)) {</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">if</span> (base_time_limit_->external_boolean_as_limit_ != <span class="keyword">nullptr</span>) {</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  time_limit_.<a class="code" href="classoperations__research_1_1_time_limit.html#a5b6cf15a55615535aa54e71103de8d9f">RegisterExternalBooleanAsLimit</a>(</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  base_time_limit_->external_boolean_as_limit_);</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  }</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> }</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  </div>
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<div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="classoperations__research_1_1_nested_time_limit.html#acc74615391497a1874ffb69d751f80af"> 60</a></span> <a class="code" href="classoperations__research_1_1_nested_time_limit.html#acc74615391497a1874ffb69d751f80af">NestedTimeLimit::~NestedTimeLimit</a>() {</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  base_time_limit_-><a class="code" href="classoperations__research_1_1_time_limit.html#af90cfd1fc238433fc303ee28c5914eb9">AdvanceDeterministicTime</a>(</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  time_limit_.<a class="code" href="classoperations__research_1_1_time_limit.html#ac7e861414a70fc937d18bc7ca743fc98">GetElapsedDeterministicTime</a>());</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> }</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  </div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> } <span class="comment">// namespace operations_research</span></div>
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</div><!-- fragment --></div><!-- contents -->
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</div><!-- doc-content -->
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<div class="ttc" id="aalldiff__cst_8cc_html_a021e695f54a13bd809c34b2f4ca87c37"><div class="ttname"><a href="alldiff__cst_8cc.html#a021e695f54a13bd809c34b2f4ca87c37">min</a></div><div class="ttdeci">int64 min</div><div class="ttdef"><b>Definition:</b> <a href="alldiff__cst_8cc_source.html#l00138">alldiff_cst.cc:138</a></div></div>
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<div class="ttc" id="atime__limit_8h_html"><div class="ttname"><a href="time__limit_8h.html">time_limit.h</a></div></div>
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<div class="ttc" id="atime__limit_8cc_html_ace49ac4cd148fa1295f874fd177cf5ff"><div class="ttname"><a href="time__limit_8cc.html#ace49ac4cd148fa1295f874fd177cf5ff">DEFINE_bool</a></div><div class="ttdeci">DEFINE_bool(time_limit_use_usertime, false, "If true, rely on the user time in the TimeLimit class. This is " "only recommended for benchmarking on a non-isolated environment.")</div></div>
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<div class="ttc" id="aclassoperations__research_1_1_time_limit_html_a1837453fa693143e6ec334701557a448"><div class="ttname"><a href="classoperations__research_1_1_time_limit.html#a1837453fa693143e6ec334701557a448">operations_research::TimeLimit::kSafetyBufferSeconds</a></div><div class="ttdeci">static const double kSafetyBufferSeconds</div><div class="ttdef"><b>Definition:</b> <a href="time__limit_8h_source.html#l00107">time_limit.h:107</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_html"><div class="ttname"><a href="namespaceoperations__research.html">operations_research</a></div><div class="ttdoc">The vehicle routing library lets one model and solve generic vehicle routing problems ranging from th...</div><div class="ttdef"><b>Definition:</b> <a href="dense__doubly__linked__list_8h_source.html#l00021">dense_doubly_linked_list.h:21</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_time_limit_html_a362a88bfe50d83c028154a62ef53e780"><div class="ttname"><a href="classoperations__research_1_1_time_limit.html#a362a88bfe50d83c028154a62ef53e780">operations_research::TimeLimit::GetDeterministicTimeLeft</a></div><div class="ttdeci">double GetDeterministicTimeLeft() const</div><div class="ttdoc">Returns the remaining deterministic time before LimitReached() returns true due to the deterministic ...</div><div class="ttdef"><b>Definition:</b> <a href="time__limit_8h_source.html#l00212">time_limit.h:212</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_time_limit_html"><div class="ttname"><a href="classoperations__research_1_1_time_limit.html">operations_research::TimeLimit</a></div><div class="ttdoc">A simple class to enforce both an elapsed time limit and a deterministic time limit in the same threa...</div><div class="ttdef"><b>Definition:</b> <a href="time__limit_8h_source.html#l00105">time_limit.h:105</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_time_limit_html_a764be64f3029f8b8e23511061d8de355"><div class="ttname"><a href="classoperations__research_1_1_time_limit.html#a764be64f3029f8b8e23511061d8de355">operations_research::TimeLimit::DebugString</a></div><div class="ttdeci">std::string DebugString() const</div><div class="ttdoc">Returns information about the time limit object in a human-readable form.</div><div class="ttdef"><b>Definition:</b> <a href="time__limit_8cc_source.html#l00031">time_limit.cc:31</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_nested_time_limit_html_af23d2dc1b291081b642a728cf0033987"><div class="ttname"><a href="classoperations__research_1_1_nested_time_limit.html#af23d2dc1b291081b642a728cf0033987">operations_research::NestedTimeLimit::NestedTimeLimit</a></div><div class="ttdeci">NestedTimeLimit(TimeLimit *base_time_limit, double limit_in_seconds, double deterministic_limit)</div><div class="ttdoc">Creates the nested time limit.</div><div class="ttdef"><b>Definition:</b> <a href="time__limit_8cc_source.html#l00047">time_limit.cc:47</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_time_limit_html_a4273b83b06bfbf856393db6d0a9b8715"><div class="ttname"><a href="classoperations__research_1_1_time_limit.html#a4273b83b06bfbf856393db6d0a9b8715">operations_research::TimeLimit::GetTimeLeft</a></div><div class="ttdeci">double GetTimeLeft() const</div><div class="ttdoc">Returns the time left on this limit, or 0 if the limit was reached (it never returns a negative value...</div><div class="ttdef"><b>Definition:</b> <a href="time__limit_8h_source.html#l00570">time_limit.h:570</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_time_limit_html_a5b6cf15a55615535aa54e71103de8d9f"><div class="ttname"><a href="classoperations__research_1_1_time_limit.html#a5b6cf15a55615535aa54e71103de8d9f">operations_research::TimeLimit::RegisterExternalBooleanAsLimit</a></div><div class="ttdeci">void RegisterExternalBooleanAsLimit(std::atomic< bool > *external_boolean_as_limit)</div><div class="ttdoc">Registers the external Boolean to check when LimitReached() is called.</div><div class="ttdef"><b>Definition:</b> <a href="time__limit_8h_source.html#l00272">time_limit.h:272</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_time_limit_html_af90cfd1fc238433fc303ee28c5914eb9"><div class="ttname"><a href="classoperations__research_1_1_time_limit.html#af90cfd1fc238433fc303ee28c5914eb9">operations_research::TimeLimit::AdvanceDeterministicTime</a></div><div class="ttdeci">void AdvanceDeterministicTime(double deterministic_duration)</div><div class="ttdoc">Advances the deterministic time.</div><div class="ttdef"><b>Definition:</b> <a href="time__limit_8h_source.html#l00226">time_limit.h:226</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_aeef651f886eb5252c08835194213efe2"><div class="ttname"><a href="base_2logging_8h.html#aeef651f886eb5252c08835194213efe2">ABSL_DIE_IF_NULL</a></div><div class="ttdeci">#define ABSL_DIE_IF_NULL</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00028">base/logging.h:28</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_time_limit_html_ae3fe2e2b613455b49c6cc74dd3c7581e"><div class="ttname"><a href="classoperations__research_1_1_time_limit.html#ae3fe2e2b613455b49c6cc74dd3c7581e">operations_research::TimeLimit::GetElapsedTime</a></div><div class="ttdeci">double GetElapsedTime() const</div><div class="ttdoc">Returns the time elapsed in seconds since the construction of this object.</div><div class="ttdef"><b>Definition:</b> <a href="time__limit_8h_source.html#l00251">time_limit.h:251</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_time_limit_html_ac62fbbc5383a86a9fe334e3213f6244b"><div class="ttname"><a href="classoperations__research_1_1_time_limit.html#ac62fbbc5383a86a9fe334e3213f6244b">operations_research::TimeLimit::kHistorySize</a></div><div class="ttdeci">static const int kHistorySize</div><div class="ttdef"><b>Definition:</b> <a href="time__limit_8h_source.html#l00108">time_limit.h:108</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_time_limit_html_ac7e861414a70fc937d18bc7ca743fc98"><div class="ttname"><a href="classoperations__research_1_1_time_limit.html#ac7e861414a70fc937d18bc7ca743fc98">operations_research::TimeLimit::GetElapsedDeterministicTime</a></div><div class="ttdeci">double GetElapsedDeterministicTime() const</div><div class="ttdoc">Returns the elapsed deterministic time since the construction of this object.</div><div class="ttdef"><b>Definition:</b> <a href="time__limit_8h_source.html#l00260">time_limit.h:260</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_nested_time_limit_html_acc74615391497a1874ffb69d751f80af"><div class="ttname"><a href="classoperations__research_1_1_nested_time_limit.html#acc74615391497a1874ffb69d751f80af">operations_research::NestedTimeLimit::~NestedTimeLimit</a></div><div class="ttdeci">~NestedTimeLimit()</div><div class="ttdoc">Updates elapsed deterministic time in the base time limit object.</div><div class="ttdef"><b>Definition:</b> <a href="time__limit_8cc_source.html#l00060">time_limit.cc:60</a></div></div>
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