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<div class="headertitle"><div class="title">gurobi_init_arguments.h</div></div>
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<a href="gurobi__init__arguments_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_MATH_OPT_SOLVERS_GUROBI_INIT_ARGUMENTS_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_MATH_OPT_SOLVERS_GUROBI_INIT_ARGUMENTS_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 <memory></span></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="preprocessor">#include <optional></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="preprocessor">#include "absl/status/statusor.h"</span></div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#include "<a class="code" href="non__streamable__solver__init__arguments_8h.html">ortools/math_opt/core/non_streamable_solver_init_arguments.h</a>"</span></div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include "ortools/math_opt/parameters.pb.h"</span></div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include "ortools/math_opt/solvers/gurobi.pb.h"</span></div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#include "<a class="code" href="g__gurobi_8h.html">ortools/math_opt/solvers/gurobi/g_gurobi.h</a>"</span></div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> </div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceoperations__research.html">operations_research</a> {</div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceoperations__research_1_1math__opt.html">math_opt</a> {</div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> </div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="comment">// Returns a new master environment.</span></div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="comment">//</span></div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="comment">// The typical use of this function is to share the same environment between</span></div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="comment">// multiple solver instances. This is necessary when a single-use license is</span></div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="comment">// used since only one master environment can exists in that case.</span></div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="comment">//</span></div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="comment">// A single master environment is not thread-safe and thus it should only be</span></div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span><span class="comment">// used in a single thread. Even if the user has a license that authorizes</span></div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="comment">// multiple master environments, Gurobi still recommends to use only one and to</span></div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="comment">// share it as it is more efficient (see GRBloadenv() documentation).</span></div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span><span class="comment">//</span></div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span><span class="comment">// Of course, if the user wants to run multiple solves in parallel and has a</span></div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span><span class="comment">// license that authorizes that, one environment should be used per thread.</span></div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span><span class="comment">//</span></div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span><span class="comment">// The master environment can be passed to MathOpt via the</span></div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span><span class="comment">// NonStreamableGurobiInitArguments structure and its master_env field.</span></div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span><span class="comment">//</span></div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span><span class="comment">// The optional ISV key can be used to build the environment from an ISV key</span></div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span><span class="comment">// instead of using the default license file. See</span></div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span><span class="comment">// http://www.gurobi.com/products/licensing-pricing/isv-program for details.</span></div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span><span class="comment">//</span></div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span><span class="comment">// Example with default license file:</span></div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span><span class="comment">//</span></div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span><span class="comment">// // Solving two models on the same thread, sharing the same master</span></div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span><span class="comment">// // environment.</span></div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span><span class="comment">// Model model_1;</span></div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span><span class="comment">// Model model_2;</span></div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span><span class="comment">//</span></div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span><span class="comment">// ...</span></div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span><span class="comment">//</span></div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span><span class="comment">// ASSIGN_OR_RETURN(const GRBenvUniquePtr master_env,</span></div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span><span class="comment">// NewMasterEnvironment());</span></div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span><span class="comment">//</span></div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span><span class="comment">// NonStreamableGurobiInitArguments gurobi_args;</span></div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span><span class="comment">// gurobi_args.master_env = master_env.get();</span></div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span><span class="comment">//</span></div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span><span class="comment">// ASSIGN_OR_RETURN(</span></div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span><span class="comment">// const std::unique_ptr<IncrementalSolver> incremental_solve_1,</span></div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span><span class="comment">// IncrementalSolver::New(model, SOLVER_TYPE_GUROBI,</span></div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span><span class="comment">// SolverInitArguments(gurobi_args)));</span></div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span><span class="comment">// ASSIGN_OR_RETURN(</span></div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span><span class="comment">// const std::unique_ptr<IncrementalSolver> incremental_solve_2,</span></div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span><span class="comment">// IncrementalSolver::New(model, SOLVER_TYPE_GUROBI,</span></div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span><span class="comment">// SolverInitArguments(gurobi_args)));</span></div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span><span class="comment">//</span></div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span><span class="comment">// ASSIGN_OR_RETURN(const SolveResult result_1, incremental_solve_1->Solve());</span></div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span><span class="comment">// ASSIGN_OR_RETURN(const SolveResult result_2, incremental_solve_2->Solve());</span></div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span><span class="comment">//</span></div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span><span class="comment">//</span></div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span><span class="comment">// With ISV key:</span></div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span><span class="comment">//</span></div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span><span class="comment">// ASSIGN_OR_RETURN(const GRBenvUniquePtr master_env,</span></div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span><span class="comment">// NewMasterEnvironment(GurobiISVKey{</span></div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span><span class="comment">// .name = "the name",</span></div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span><span class="comment">// .application_name = "the application",</span></div>
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span><span class="comment">// .expiration = 0,</span></div>
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span><span class="comment">// .key = "...",</span></div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span><span class="comment">// }.Proto()));</span></div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span><span class="comment">//</span></div>
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span>absl::StatusOr<GRBenvUniquePtr> <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#a490252ce76cb865d44d5888d50376e3d">NewMasterEnvironment</a>(</div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> std::optional<GurobiInitializerProto::ISVKey> proto_isv_key = {});</div>
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> </div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span><span class="comment">// Non-streamable Gurobi specific parameters for solver instantiation.</span></div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span><span class="comment">//</span></div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span><span class="comment">// See NonStreamableSolverInitArguments for details.</span></div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_non_streamable_gurobi_init_arguments.html"> 94</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_non_streamable_gurobi_init_arguments.html">NonStreamableGurobiInitArguments</a></div>
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> : <span class="keyword">public</span> <a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_non_streamable_solver_init_arguments_helper.html">NonStreamableSolverInitArgumentsHelper</a><</div>
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<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> NonStreamableGurobiInitArguments, SOLVER_TYPE_GUROBI> {</div>
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<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> <span class="comment">// Master environment to use. This is only useful to pass when either the</span></div>
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<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="comment">// default master environment created by the solver implementation is not</span></div>
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<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="comment">// enough or when multiple Gurobi solvers are used with a single-use</span></div>
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<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> <span class="comment">// license. In the latter case, only one master environment can be created so</span></div>
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<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="comment">// it must be shared.</span></div>
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="comment">// The solver does not take ownership of the environment, it is the</span></div>
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<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> <span class="comment">// responsibility of the caller to properly dispose of it after all solvers</span></div>
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<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> <span class="comment">// that used it have been destroyed.</span></div>
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_non_streamable_gurobi_init_arguments.html#a174586bb547dfa8b5ecdf9da0cc0a3b1"> 106</a></span> <a class="code hl_typedef" href="environment_8h.html#a2963ba0c46b86ac4680fb3bb4ca8b2f3">GRBenv</a>* <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_non_streamable_gurobi_init_arguments.html#a174586bb547dfa8b5ecdf9da0cc0a3b1">master_env</a> = <span class="keyword">nullptr</span>;</div>
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> </div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_non_streamable_gurobi_init_arguments.html#ae91c3610b3d05bae3a610e83eb03b45b"> 108</a></span> <span class="keyword">const</span> <a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_non_streamable_gurobi_init_arguments.html">NonStreamableGurobiInitArguments</a>* <a class="code hl_function" href="structoperations__research_1_1math__opt_1_1_non_streamable_gurobi_init_arguments.html#ae91c3610b3d05bae3a610e83eb03b45b">ToNonStreamableGurobiInitArguments</a>()<span class="keyword"></span></div>
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<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span><span class="keyword"> const override </span>{</div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> <span class="keywordflow">return</span> <span class="keyword">this</span>;</div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> }</div>
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<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span>};</div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> </div>
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<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span>} <span class="comment">// namespace math_opt</span></div>
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<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span>} <span class="comment">// namespace operations_research</span></div>
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<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> </div>
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<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span><span class="preprocessor">#endif </span><span class="comment">// OR_TOOLS_MATH_OPT_SOLVERS_GUROBI_INIT_ARGUMENTS_H_</span></div>
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<div class="ttc" id="aenvironment_8h_html_a2963ba0c46b86ac4680fb3bb4ca8b2f3"><div class="ttname"><a href="environment_8h.html#a2963ba0c46b86ac4680fb3bb4ca8b2f3">GRBenv</a></div><div class="ttdeci">struct _GRBenv GRBenv</div><div class="ttdef"><b>Definition:</b> <a href="environment_8h_source.html#l00025">environment.h:25</a></div></div>
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<div class="ttc" id="ag__gurobi_8h_html"><div class="ttname"><a href="g__gurobi_8h.html">g_gurobi.h</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1math__opt_html"><div class="ttname"><a href="namespaceoperations__research_1_1math__opt.html">operations_research::math_opt</a></div><div class="ttdef"><b>Definition:</b> <a href="arrow__operator__proxy_8h_source.html#l00020">arrow_operator_proxy.h:20</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1math__opt_html_a490252ce76cb865d44d5888d50376e3d"><div class="ttname"><a href="namespaceoperations__research_1_1math__opt.html#a490252ce76cb865d44d5888d50376e3d">operations_research::math_opt::NewMasterEnvironment</a></div><div class="ttdeci">absl::StatusOr< GRBenvUniquePtr > NewMasterEnvironment(std::optional< GurobiInitializerProto::ISVKey > proto_isv_key)</div><div class="ttdef"><b>Definition:</b> <a href="gurobi__init__arguments_8cc_source.html#l00024">gurobi_init_arguments.cc:24</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">Collection of objects used to extend the Constraint Solver library.</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="anon__streamable__solver__init__arguments_8h_html"><div class="ttname"><a href="non__streamable__solver__init__arguments_8h.html">non_streamable_solver_init_arguments.h</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_non_streamable_gurobi_init_arguments_html"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_non_streamable_gurobi_init_arguments.html">operations_research::math_opt::NonStreamableGurobiInitArguments</a></div><div class="ttdef"><b>Definition:</b> <a href="gurobi__init__arguments_8h_source.html#l00094">gurobi_init_arguments.h:96</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_non_streamable_gurobi_init_arguments_html_a174586bb547dfa8b5ecdf9da0cc0a3b1"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_non_streamable_gurobi_init_arguments.html#a174586bb547dfa8b5ecdf9da0cc0a3b1">operations_research::math_opt::NonStreamableGurobiInitArguments::master_env</a></div><div class="ttdeci">GRBenv * master_env</div><div class="ttdef"><b>Definition:</b> <a href="gurobi__init__arguments_8h_source.html#l00106">gurobi_init_arguments.h:106</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_non_streamable_gurobi_init_arguments_html_ae91c3610b3d05bae3a610e83eb03b45b"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_non_streamable_gurobi_init_arguments.html#ae91c3610b3d05bae3a610e83eb03b45b">operations_research::math_opt::NonStreamableGurobiInitArguments::ToNonStreamableGurobiInitArguments</a></div><div class="ttdeci">const NonStreamableGurobiInitArguments * ToNonStreamableGurobiInitArguments() const override</div><div class="ttdef"><b>Definition:</b> <a href="gurobi__init__arguments_8h_source.html#l00108">gurobi_init_arguments.h:108</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_non_streamable_solver_init_arguments_helper_html"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_non_streamable_solver_init_arguments_helper.html">operations_research::math_opt::NonStreamableSolverInitArgumentsHelper</a></div><div class="ttdef"><b>Definition:</b> <a href="non__streamable__solver__init__arguments_8h_source.html#l00125">non_streamable_solver_init_arguments.h:126</a></div></div>
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