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<a href="callback_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>
<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 &quot;License&quot;);</span></div>
<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>
<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>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment">//</span></div>
<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>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment">//</span></div>
<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>
<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 &quot;AS IS&quot; BASIS,</span></div>
<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>
<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>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment">// limitations under the License.</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> </div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="comment">// Data types for using callbacks with MathOpt.</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment">//</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment">// Callbacks allow to user to observe the progress of a solver and modify its</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment">// behavior mid solve. This is supported by allowing the user to a function of</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment">// type MathOpt::Callback as an optional argument to MathOpt::Solve(). This</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="comment">// function is called periodically throughout the solve process. This file</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="comment">// defines the data types needed to use this callback.</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="comment">//</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="comment">// The example below registers a callback that listens for feasible solutions</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="comment">// the solvers finds along the way and accumulates them in a list for analysis</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="comment">// after the solve.</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="comment">//</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="comment">// using ::operations_research::math_opt::CallbackData;</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="comment">// using ::operations_research::math_opt::CallbackRegistration;</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="comment">// using ::operations_research::math_opt::CallbackResult;</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="comment">// using ::operations_research::math_opt::MathOpt;</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="comment">// using ::operations_research::math_opt::Result;</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="comment">// using ::operations_research::math_opt::Variable;</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="comment">// using ::operations_research::math_opt::VariableMap;</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="comment">//</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="comment">// MathOpt model(operations_research::math_opt::SOLVER_TYPE_GUROBI);</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="comment">// Variable x = model.AddBinaryVariable();</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span><span class="comment">// model.objective().Maximize(x);</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="comment">// CallbackRegistration cb_reg;</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="comment">// cb_reg.events = {</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span><span class="comment">// operations_research::math_opt::CALLBACK_EVENT_MIP_SOLUTION};</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span><span class="comment">// std::vector&lt;VariableMap&lt;double&gt;&gt; solutions;</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span><span class="comment">// auto cb = [&amp;solutions](const CallbackData&amp; cb_data) {</span></div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span><span class="comment">// // NOTE: this assumes the callback is always called from the same thread.</span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span><span class="comment">// // Gurobi always does this, multi-threaded SCIP does not.</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span><span class="comment">// solutions.push_back(*cb_data.solution);</span></div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span><span class="comment">// return CallbackResult();</span></div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span><span class="comment">// };</span></div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span><span class="comment">// absl::StatusOr&lt;Result&gt; result = opt.Solve({}, {}, cb_reb, cb);</span></div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span><span class="comment">//</span></div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span><span class="comment">// At the termination of the example, solutions will have {{x, 1.0}}, and</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span><span class="comment">// possibly {{x, 0.0}} as well.</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span><span class="comment">//</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span><span class="comment">// If the callback argument to MathOpt::Solve() is not null, it will be invoked</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span><span class="comment">// on the events specified by the callback_registration argument (and when the</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span><span class="comment">// callback is null, callback_registration must not request any events or will</span></div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span><span class="comment">// CHECK fail). Some solvers do not support callbacks or certain events, in this</span></div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span><span class="comment">// case the callback is ignored. TODO(b/180617976): change this behavior.</span></div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span><span class="comment">//</span></div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span><span class="comment">// Some solvers may call callback from multiple threads (SCIP will, Gurobi</span></div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span><span class="comment">// will not). You should either solve with one thread (see</span></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span><span class="comment">// solver_parameters.common_parameters.threads), write a threadsafe callback,</span></div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span><span class="comment">// or consult the documentation of your underlying solver.</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span><span class="preprocessor">#ifndef OR_TOOLS_MATH_OPT_CPP_CALLBACK_H_</span></div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span><span class="preprocessor">#define OR_TOOLS_MATH_OPT_CPP_CALLBACK_H_</span></div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> </div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span><span class="preprocessor">#include &lt;string&gt;</span></div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span><span class="preprocessor">#include &lt;utility&gt;</span></div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span><span class="preprocessor">#include &lt;vector&gt;</span></div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> </div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span><span class="preprocessor">#include &quot;absl/container/flat_hash_set.h&quot;</span></div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span><span class="preprocessor">#include &quot;absl/time/time.h&quot;</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span><span class="preprocessor">#include &quot;absl/types/optional.h&quot;</span></div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span><span class="preprocessor">#include &quot;ortools/math_opt/callback.pb.h&quot;</span></div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span><span class="preprocessor">#include &quot;<a class="code" href="indexed__model_8h.html">ortools/math_opt/core/indexed_model.h</a>&quot;</span></div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span><span class="preprocessor">#include &quot;<a class="code" href="map__filter_8h.html">ortools/math_opt/cpp/map_filter.h</a>&quot;</span></div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span><span class="preprocessor">#include &quot;<a class="code" href="variable__and__expressions_8h.html">ortools/math_opt/cpp/variable_and_expressions.h</a>&quot;</span></div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> </div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceoperations__research.html">operations_research</a> {</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span><span class="keyword">namespace </span>math_opt {</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> </div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span><span class="comment">// The input to the MathOpt::Callback function.</span></div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span><span class="comment">//</span></div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span><span class="comment">// The information available depends on the current event.</span></div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_data.html"> 83</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_callback_data.html">CallbackData</a> {</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> <span class="comment">// Users will typically not need this function.</span></div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> <span class="comment">// Will CHECK fail if proto is not valid.</span></div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <a class="code hl_function" href="structoperations__research_1_1math__opt_1_1_callback_data.html#aaf8768ad7f47b90562a96b2b0a6c5162">CallbackData</a>(<a class="code hl_class" href="classoperations__research_1_1math__opt_1_1_indexed_model.html">IndexedModel</a>* <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>, <span class="keyword">const</span> CallbackDataProto&amp; <a class="code hl_variable" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>);</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_data.html#aaf8768ad7f47b90562a96b2b0a6c5162"> 87</a></span> <a class="code hl_function" href="structoperations__research_1_1math__opt_1_1_callback_data.html#aaf8768ad7f47b90562a96b2b0a6c5162">CallbackData</a>() = <span class="keywordflow">default</span>;</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> </div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <span class="comment">// The current state of the underlying solver.</span></div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_data.html#aadec2e6a6b9b19987865c9e08366dea9"> 90</a></span> CallbackEventProto <span class="keyword">event</span> = CALLBACK_EVENT_UNSPECIFIED;</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> </div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="comment">// If event == CALLBACK_EVENT_MIP_NODE, the primal_solution contains the</span></div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <span class="comment">// primal solution to the current LP-node relaxation. In some cases, no</span></div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> <span class="comment">// solution will be available (e.g. because LP was infeasible or the solve</span></div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> <span class="comment">// was imprecise).</span></div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> <span class="comment">// If event == CALLBACK_EVENT_MIP_SOLUTION, the primal_solution contains the</span></div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> <span class="comment">// newly found primal (integer) feasible solution. The solution is always</span></div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="comment">// present.</span></div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="comment">// Otherwise, the primal_solution is not available.</span></div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_data.html#a7cc4865303820dac5bb07154f72c2365"> 100</a></span> absl::optional&lt;VariableMap&lt;double&gt;&gt; <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_data.html#a7cc4865303820dac5bb07154f72c2365">solution</a>;</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> </div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="comment">// If event == CALLBACK_EVENT_MESSAGE, contains the messages from the solver.</span></div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="comment">// Each message represents a single output line from the solver, and each</span></div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> <span class="comment">// message does not contain any &#39;\n&#39; characters.</span></div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> <span class="comment">// Otherwise, messages is empty.</span></div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_data.html#a71df9ba7e15c125b9274fd5f41b44378"> 106</a></span> std::vector&lt;std::string&gt; <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_data.html#a71df9ba7e15c125b9274fd5f41b44378">messages</a>;</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> </div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> <span class="comment">// Time since `Solve()` was called. Available for all events except</span></div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <span class="comment">// CALLBACK_EVENT_POLLING.</span></div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_data.html#a32e54c85f3390e20ab42c14f8e153581"> 110</a></span> absl::Duration <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_data.html#a32e54c85f3390e20ab42c14f8e153581">runtime</a>;</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> </div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> <span class="comment">// Only available for event == CALLBACK_EVENT_PRESOLVE.</span></div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_data.html#a726b449027cc54e1295a2325adae55b3"> 113</a></span> CallbackDataProto::PresolveStats <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_data.html#a726b449027cc54e1295a2325adae55b3">presolve_stats</a>;</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> </div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> <span class="comment">// Only available for event == CALLBACK_EVENT_SIMPLEX.</span></div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_data.html#a999366c84e0b001631cde508e7470d11"> 116</a></span> CallbackDataProto::SimplexStats <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_data.html#a999366c84e0b001631cde508e7470d11">simplex_stats</a>;</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> </div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> <span class="comment">// Only available for event == CALLBACK_EVENT_BARRIER.</span></div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_data.html#acb8748e5254e826afc06678839c36e76"> 119</a></span> CallbackDataProto::BarrierStats <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_data.html#acb8748e5254e826afc06678839c36e76">barrier_stats</a>;</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> </div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> <span class="comment">// Only available for event of CALLBACK_EVENT_MIP, CALLBACK_EVENT_MIP_NODE, or</span></div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> <span class="comment">// CALLBACK_EVENT_MIP_SOLUTION.</span></div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_data.html#af1b70d8a9e16aed62a51574867acce69"> 123</a></span> CallbackDataProto::MipStats <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_data.html#af1b70d8a9e16aed62a51574867acce69">mip_stats</a>;</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span>};</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> </div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span><span class="comment">// Provided with a callback at the start of a Solve() to inform the solver:</span></div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span><span class="comment">// * what information the callback needs,</span></div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span><span class="comment">// * how the callback might alter the solve process.</span></div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_registration.html"> 129</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_callback_registration.html">CallbackRegistration</a> {</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <span class="comment">// Will CHECK fail if referenced variables are not from the same model.</span></div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> CallbackRegistrationProto <a class="code hl_function" href="structoperations__research_1_1math__opt_1_1_callback_registration.html#a0c87a70760f8ded4a81f33893f2a5605">Proto</a>() <span class="keyword">const</span>;</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> </div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> <span class="comment">// Returns the model referenced variables, or null if no variables are</span></div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> <span class="comment">// referenced. Will CHECK fail if variables are not from the same model.</span></div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> <a class="code hl_class" href="classoperations__research_1_1math__opt_1_1_indexed_model.html">IndexedModel</a>* <a class="code hl_function" href="structoperations__research_1_1math__opt_1_1_callback_registration.html#a64203ba9d12b2e9827e18cf8e8c30ab2">model</a>() <span class="keyword">const</span>;</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> </div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> <span class="comment">// The events the solver should invoke the callback at.</span></div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_registration.html#a704cfc9f1e9d0d79e8729114f9e13e1b"> 138</a></span> absl::flat_hash_set&lt;CallbackEventProto&gt; <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_registration.html#a704cfc9f1e9d0d79e8729114f9e13e1b">events</a>;</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> </div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> <span class="comment">// Restricts the variable returned in CallbackData.solution for event</span></div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> <span class="comment">// CALLBACK_EVENT_MIP_SOLUTION. This can improve performance.</span></div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_registration.html#a5c3733be3e96b79b2474ace714e498c8"> 142</a></span> <a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_map_filter.html">MapFilter&lt;Variable&gt;</a> <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_registration.html#a5c3733be3e96b79b2474ace714e498c8">mip_solution_filter</a>;</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> </div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> <span class="comment">// Restricts the variable returned in CallbackData.solution for event</span></div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> <span class="comment">// CALLBACK_EVENT_MIP_NODE. This can improve performance.</span></div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_registration.html#aa9894fa600000048052e68fc1bd7abab"> 146</a></span> <a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_map_filter.html">MapFilter&lt;Variable&gt;</a> <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_registration.html#aa9894fa600000048052e68fc1bd7abab">mip_node_filter</a>;</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> </div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> <span class="comment">// If the callback will ever add &quot;user cuts&quot; at event CALLBACK_EVENT_MIP_NODE</span></div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> <span class="comment">// during the solve process (a linear constraint that excludes the current LP</span></div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> <span class="comment">// solution but does not cut off any integer points).</span></div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_registration.html#a30ba937e73ce5c1b77fdced5e6adafdd"> 151</a></span> <span class="keywordtype">bool</span> <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_registration.html#a30ba937e73ce5c1b77fdced5e6adafdd">add_cuts</a> = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> </div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> <span class="comment">// If the callback will ever add &quot;lazy constraints&quot; at event</span></div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> <span class="comment">// CALLBACK_EVENT_MIP_NODE or CALLBACK_EVENT_MIP_SOLUTION during the solve</span></div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> <span class="comment">// process (a linear constraint that excludes integer points).</span></div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_registration.html#a922db711f1c18d9e29f2e85c2fe23541"> 156</a></span> <span class="keywordtype">bool</span> <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_registration.html#a922db711f1c18d9e29f2e85c2fe23541">add_lazy_constraints</a> = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span>};</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> </div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span><span class="comment">// The value returned by the MathOpt::Callback function.</span></div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_result.html"> 160</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_callback_result.html">CallbackResult</a> {</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> <span class="comment">// Prefer AddUserCut and AddLazyConstraint below instead of using this</span></div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> <span class="comment">// directly.</span></div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_result_1_1_generated_linear_constraint.html"> 163</a></span> <span class="keyword">struct </span><a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_callback_result_1_1_generated_linear_constraint.html">GeneratedLinearConstraint</a> {</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_result_1_1_generated_linear_constraint.html#ac9e29c31846c20153162dca604561b9c"> 164</a></span> <a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_bounded_linear_expression.html">BoundedLinearExpression</a> <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_result_1_1_generated_linear_constraint.html#ac9e29c31846c20153162dca604561b9c">linear_constraint</a>;</div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_result_1_1_generated_linear_constraint.html#a07523a32cb6b7dc0e6faa86c48420c7f"> 165</a></span> <span class="keywordtype">bool</span> <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_result_1_1_generated_linear_constraint.html#a07523a32cb6b7dc0e6faa86c48420c7f">is_lazy</a> = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> </div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_result_1_1_generated_linear_constraint.html#a64203ba9d12b2e9827e18cf8e8c30ab2"> 167</a></span> <a class="code hl_class" href="classoperations__research_1_1math__opt_1_1_indexed_model.html">IndexedModel</a>* <a class="code hl_function" href="structoperations__research_1_1math__opt_1_1_callback_result_1_1_generated_linear_constraint.html#a64203ba9d12b2e9827e18cf8e8c30ab2">model</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_result_1_1_generated_linear_constraint.html#ac9e29c31846c20153162dca604561b9c">linear_constraint</a>.<a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_bounded_linear_expression.html#a4a753905fdb2765209204ba37e6acc8d">expression</a>.<a class="code hl_function" href="classoperations__research_1_1math__opt_1_1_linear_expression.html#a64203ba9d12b2e9827e18cf8e8c30ab2">model</a>(); }</div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> };</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> </div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> <span class="comment">// Adds a &quot;user cut,&quot; a linear constraint that excludes the current LP</span></div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> <span class="comment">// solution but does not cut off any integer points. Use only for</span></div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> <span class="comment">// CALLBACK_EVENT_MIP_NODE.</span></div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_result.html#aaad1dc9bd90c163cd5cffd2435a4bea5"> 173</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="structoperations__research_1_1math__opt_1_1_callback_result.html#aaad1dc9bd90c163cd5cffd2435a4bea5">AddUserCut</a>(<a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_bounded_linear_expression.html">BoundedLinearExpression</a> linear_constraint) {</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_result.html#afc2dc2d61e49bb4d674aa79f76c8e143">new_constraints</a>.push_back({std::move(linear_constraint), <span class="keyword">false</span>});</div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> }</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> </div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> <span class="comment">// Adds a &quot;lazy constraint,&quot; a linear constraint that excludes integer points.</span></div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> <span class="comment">// Use only for CALLBACK_EVENT_MIP_NODE and CALLBACK_EVENT_MIP_SOLUTION.</span></div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_result.html#a8225d69ce6f20e86ccfe133c7d80ff1a"> 179</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="structoperations__research_1_1math__opt_1_1_callback_result.html#a8225d69ce6f20e86ccfe133c7d80ff1a">AddLazyConstraint</a>(<a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_bounded_linear_expression.html">BoundedLinearExpression</a> linear_constraint) {</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_result.html#afc2dc2d61e49bb4d674aa79f76c8e143">new_constraints</a>.push_back({std::move(linear_constraint), <span class="keyword">true</span>});</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> }</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> </div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> <span class="comment">// Will CHECK fail if referenced variables are not from the same model.</span></div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> CallbackResultProto <a class="code hl_function" href="structoperations__research_1_1math__opt_1_1_callback_result.html#a945924a45caa0d8fb76132e005a89a91">Proto</a>() <span class="keyword">const</span>;</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> </div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> <span class="comment">// Returns the model referenced variables, or null if no variables are</span></div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> <span class="comment">// referenced. Will CHECK fail if variables are not from the same model.</span></div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> <span class="comment">//</span></div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> <span class="comment">// Runs in O(num constraints + num suggested solutions).</span></div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> <a class="code hl_class" href="classoperations__research_1_1math__opt_1_1_indexed_model.html">IndexedModel</a>* <a class="code hl_function" href="structoperations__research_1_1math__opt_1_1_callback_result.html#a64203ba9d12b2e9827e18cf8e8c30ab2">model</a>() <span class="keyword">const</span>;</div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> </div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> <span class="comment">// Stop the solve process and return early. Can be called from any event.</span></div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_result.html#a74995b2493f23c9103413e37da5cdc38"> 193</a></span> <span class="keywordtype">bool</span> <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_result.html#a74995b2493f23c9103413e37da5cdc38">terminate</a> = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> </div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> <span class="comment">// The user cuts and lazy constraints added. Prefer AddUserCut() and</span></div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> <span class="comment">// AddLazyConstraint() to modifying this directly.</span></div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_result.html#afc2dc2d61e49bb4d674aa79f76c8e143"> 197</a></span> std::vector&lt;GeneratedLinearConstraint&gt; <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_result.html#afc2dc2d61e49bb4d674aa79f76c8e143">new_constraints</a>;</div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> </div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> <span class="comment">// A solution or partially defined solution to give to the solver.</span></div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_callback_result.html#a81066f9b4707ddcb2f5b5eb5ce216153"> 200</a></span> std::vector&lt;VariableMap&lt;double&gt;&gt; <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_callback_result.html#a81066f9b4707ddcb2f5b5eb5ce216153">suggested_solutions</a>;</div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span>};</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> </div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span>} <span class="comment">// namespace math_opt</span></div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span>} <span class="comment">// namespace operations_research</span></div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span> </div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span><span class="preprocessor">#endif </span><span class="comment">// OR_TOOLS_MATH_OPT_CPP_CALLBACK_H_</span></div>
<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_indexed_model_html"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_indexed_model.html">operations_research::math_opt::IndexedModel</a></div><div class="ttdef"><b>Definition:</b> <a href="indexed__model_8h_source.html#l00161">indexed_model.h:161</a></div></div>
<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_linear_expression_html_a64203ba9d12b2e9827e18cf8e8c30ab2"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_linear_expression.html#a64203ba9d12b2e9827e18cf8e8c30ab2">operations_research::math_opt::LinearExpression::model</a></div><div class="ttdeci">IndexedModel * model() const</div><div class="ttdef"><b>Definition:</b> <a href="variable__and__expressions_8h_source.html#l00965">variable_and_expressions.h:965</a></div></div>
<div class="ttc" id="acp__model__fz__solver_8cc_html_aed003f5eb5197bc586b7ef2c36a63da2"><div class="ttname"><a href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a></div><div class="ttdeci">CpModelProto proto</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__fz__solver_8cc_source.html#l00119">cp_model_fz_solver.cc:119</a></div></div>
<div class="ttc" id="agurobi__interface_8cc_html_a0728f23c9a47655d38e0bf1a2f200bcf"><div class="ttname"><a href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a></div><div class="ttdeci">GRBmodel * model</div><div class="ttdef"><b>Definition:</b> <a href="gurobi__interface_8cc_source.html#l00274">gurobi_interface.cc:274</a></div></div>
<div class="ttc" id="aindexed__model_8h_html"><div class="ttname"><a href="indexed__model_8h.html">indexed_model.h</a></div></div>
<div class="ttc" id="amap__filter_8h_html"><div class="ttname"><a href="map__filter_8h.html">map_filter.h</a></div></div>
<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>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_bounded_linear_expression_html"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_bounded_linear_expression.html">operations_research::math_opt::BoundedLinearExpression</a></div><div class="ttdef"><b>Definition:</b> <a href="variable__and__expressions_8h_source.html#l00465">variable_and_expressions.h:465</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_bounded_linear_expression_html_a4a753905fdb2765209204ba37e6acc8d"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_bounded_linear_expression.html#a4a753905fdb2765209204ba37e6acc8d">operations_research::math_opt::BoundedLinearExpression::expression</a></div><div class="ttdeci">LinearExpression expression</div><div class="ttdef"><b>Definition:</b> <a href="variable__and__expressions_8h_source.html#l00488">variable_and_expressions.h:488</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_data_html"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_data.html">operations_research::math_opt::CallbackData</a></div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00083">callback.h:83</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_data_html_a32e54c85f3390e20ab42c14f8e153581"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_data.html#a32e54c85f3390e20ab42c14f8e153581">operations_research::math_opt::CallbackData::runtime</a></div><div class="ttdeci">absl::Duration runtime</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00110">callback.h:110</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_data_html_a71df9ba7e15c125b9274fd5f41b44378"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_data.html#a71df9ba7e15c125b9274fd5f41b44378">operations_research::math_opt::CallbackData::messages</a></div><div class="ttdeci">std::vector&lt; std::string &gt; messages</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00106">callback.h:106</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_data_html_a726b449027cc54e1295a2325adae55b3"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_data.html#a726b449027cc54e1295a2325adae55b3">operations_research::math_opt::CallbackData::presolve_stats</a></div><div class="ttdeci">CallbackDataProto::PresolveStats presolve_stats</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00113">callback.h:113</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_data_html_a7cc4865303820dac5bb07154f72c2365"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_data.html#a7cc4865303820dac5bb07154f72c2365">operations_research::math_opt::CallbackData::solution</a></div><div class="ttdeci">absl::optional&lt; VariableMap&lt; double &gt; &gt; solution</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00100">callback.h:100</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_data_html_a999366c84e0b001631cde508e7470d11"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_data.html#a999366c84e0b001631cde508e7470d11">operations_research::math_opt::CallbackData::simplex_stats</a></div><div class="ttdeci">CallbackDataProto::SimplexStats simplex_stats</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00116">callback.h:116</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_data_html_aaf8768ad7f47b90562a96b2b0a6c5162"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_data.html#aaf8768ad7f47b90562a96b2b0a6c5162">operations_research::math_opt::CallbackData::CallbackData</a></div><div class="ttdeci">CallbackData()=default</div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_data_html_acb8748e5254e826afc06678839c36e76"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_data.html#acb8748e5254e826afc06678839c36e76">operations_research::math_opt::CallbackData::barrier_stats</a></div><div class="ttdeci">CallbackDataProto::BarrierStats barrier_stats</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00119">callback.h:119</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_data_html_af1b70d8a9e16aed62a51574867acce69"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_data.html#af1b70d8a9e16aed62a51574867acce69">operations_research::math_opt::CallbackData::mip_stats</a></div><div class="ttdeci">CallbackDataProto::MipStats mip_stats</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00123">callback.h:123</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_registration_html"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_registration.html">operations_research::math_opt::CallbackRegistration</a></div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00129">callback.h:129</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_registration_html_a0c87a70760f8ded4a81f33893f2a5605"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_registration.html#a0c87a70760f8ded4a81f33893f2a5605">operations_research::math_opt::CallbackRegistration::Proto</a></div><div class="ttdeci">CallbackRegistrationProto Proto() const</div><div class="ttdef"><b>Definition:</b> <a href="callback_8cc_source.html#l00098">callback.cc:98</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_registration_html_a30ba937e73ce5c1b77fdced5e6adafdd"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_registration.html#a30ba937e73ce5c1b77fdced5e6adafdd">operations_research::math_opt::CallbackRegistration::add_cuts</a></div><div class="ttdeci">bool add_cuts</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00151">callback.h:151</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_registration_html_a5c3733be3e96b79b2474ace714e498c8"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_registration.html#a5c3733be3e96b79b2474ace714e498c8">operations_research::math_opt::CallbackRegistration::mip_solution_filter</a></div><div class="ttdeci">MapFilter&lt; Variable &gt; mip_solution_filter</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00142">callback.h:142</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_registration_html_a64203ba9d12b2e9827e18cf8e8c30ab2"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_registration.html#a64203ba9d12b2e9827e18cf8e8c30ab2">operations_research::math_opt::CallbackRegistration::model</a></div><div class="ttdeci">IndexedModel * model() const</div><div class="ttdef"><b>Definition:</b> <a href="callback_8cc_source.html#l00093">callback.cc:93</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_registration_html_a704cfc9f1e9d0d79e8729114f9e13e1b"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_registration.html#a704cfc9f1e9d0d79e8729114f9e13e1b">operations_research::math_opt::CallbackRegistration::events</a></div><div class="ttdeci">absl::flat_hash_set&lt; CallbackEventProto &gt; events</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00138">callback.h:138</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_registration_html_a922db711f1c18d9e29f2e85c2fe23541"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_registration.html#a922db711f1c18d9e29f2e85c2fe23541">operations_research::math_opt::CallbackRegistration::add_lazy_constraints</a></div><div class="ttdeci">bool add_lazy_constraints</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00156">callback.h:156</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_registration_html_aa9894fa600000048052e68fc1bd7abab"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_registration.html#aa9894fa600000048052e68fc1bd7abab">operations_research::math_opt::CallbackRegistration::mip_node_filter</a></div><div class="ttdeci">MapFilter&lt; Variable &gt; mip_node_filter</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00146">callback.h:146</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_result_1_1_generated_linear_constraint_html"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_result_1_1_generated_linear_constraint.html">operations_research::math_opt::CallbackResult::GeneratedLinearConstraint</a></div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00163">callback.h:163</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_result_1_1_generated_linear_constraint_html_a07523a32cb6b7dc0e6faa86c48420c7f"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_result_1_1_generated_linear_constraint.html#a07523a32cb6b7dc0e6faa86c48420c7f">operations_research::math_opt::CallbackResult::GeneratedLinearConstraint::is_lazy</a></div><div class="ttdeci">bool is_lazy</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00165">callback.h:165</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_result_1_1_generated_linear_constraint_html_a64203ba9d12b2e9827e18cf8e8c30ab2"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_result_1_1_generated_linear_constraint.html#a64203ba9d12b2e9827e18cf8e8c30ab2">operations_research::math_opt::CallbackResult::GeneratedLinearConstraint::model</a></div><div class="ttdeci">IndexedModel * model() const</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00167">callback.h:167</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_result_1_1_generated_linear_constraint_html_ac9e29c31846c20153162dca604561b9c"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_result_1_1_generated_linear_constraint.html#ac9e29c31846c20153162dca604561b9c">operations_research::math_opt::CallbackResult::GeneratedLinearConstraint::linear_constraint</a></div><div class="ttdeci">BoundedLinearExpression linear_constraint</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00164">callback.h:164</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_result_html"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_result.html">operations_research::math_opt::CallbackResult</a></div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00160">callback.h:160</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_result_html_a64203ba9d12b2e9827e18cf8e8c30ab2"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_result.html#a64203ba9d12b2e9827e18cf8e8c30ab2">operations_research::math_opt::CallbackResult::model</a></div><div class="ttdeci">IndexedModel * model() const</div><div class="ttdef"><b>Definition:</b> <a href="callback_8cc_source.html#l00115">callback.cc:115</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_result_html_a74995b2493f23c9103413e37da5cdc38"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_result.html#a74995b2493f23c9103413e37da5cdc38">operations_research::math_opt::CallbackResult::terminate</a></div><div class="ttdeci">bool terminate</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00193">callback.h:193</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_result_html_a81066f9b4707ddcb2f5b5eb5ce216153"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_result.html#a81066f9b4707ddcb2f5b5eb5ce216153">operations_research::math_opt::CallbackResult::suggested_solutions</a></div><div class="ttdeci">std::vector&lt; VariableMap&lt; double &gt; &gt; suggested_solutions</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00200">callback.h:200</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_result_html_a8225d69ce6f20e86ccfe133c7d80ff1a"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_result.html#a8225d69ce6f20e86ccfe133c7d80ff1a">operations_research::math_opt::CallbackResult::AddLazyConstraint</a></div><div class="ttdeci">void AddLazyConstraint(BoundedLinearExpression linear_constraint)</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00179">callback.h:179</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_result_html_a945924a45caa0d8fb76132e005a89a91"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_result.html#a945924a45caa0d8fb76132e005a89a91">operations_research::math_opt::CallbackResult::Proto</a></div><div class="ttdeci">CallbackResultProto Proto() const</div><div class="ttdef"><b>Definition:</b> <a href="callback_8cc_source.html#l00120">callback.cc:120</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_result_html_aaad1dc9bd90c163cd5cffd2435a4bea5"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_result.html#aaad1dc9bd90c163cd5cffd2435a4bea5">operations_research::math_opt::CallbackResult::AddUserCut</a></div><div class="ttdeci">void AddUserCut(BoundedLinearExpression linear_constraint)</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00173">callback.h:173</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_callback_result_html_afc2dc2d61e49bb4d674aa79f76c8e143"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_callback_result.html#afc2dc2d61e49bb4d674aa79f76c8e143">operations_research::math_opt::CallbackResult::new_constraints</a></div><div class="ttdeci">std::vector&lt; GeneratedLinearConstraint &gt; new_constraints</div><div class="ttdef"><b>Definition:</b> <a href="callback_8h_source.html#l00197">callback.h:197</a></div></div>
<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_map_filter_html"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_map_filter.html">operations_research::math_opt::MapFilter</a></div><div class="ttdef"><b>Definition:</b> <a href="map__filter_8h_source.html#l00052">map_filter.h:52</a></div></div>
<div class="ttc" id="avariable__and__expressions_8h_html"><div class="ttname"><a href="variable__and__expressions_8h.html">variable_and_expressions.h</a></div></div>
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