added constructors

Author: galabovaa

src/mip/HighsMipSolver.cpp

@@ -27,6 +27,24 @@
 
 using std::fabs;
 
+HighsMipSolver::HighsMipSolver(const HighsMipSolver& mip_solver_)
+    : HighsMipSolver(mip_solver_.callback_, mip_solver_.options_mip_,
+                     mip_solver_.model_) {}
+
+HighsMipSolver::HighsMipSolver(HighsCallback* callback,
+                               const HighsOptions* options, const HighsLp* lp)
+    : callback_(callback),
+      options_mip_(options),
+      model_(lp),
+      orig_model_(lp),
+      solution_objective_(kHighsInf),
+      submip(false),
+      submip_level(0),
+      rootbasis(nullptr),
+      pscostinit(nullptr),
+      clqtableinit(nullptr),
+      implicinit(nullptr) {}
+
 HighsMipSolver::HighsMipSolver(HighsCallback& callback,
                                const HighsOptions& options, const HighsLp& lp,
                                const HighsSolution& solution, bool submip,
@@ -260,16 +278,16 @@ void HighsMipSolver::run() {
 
     // I'd like to do this, since it extends to multiple workers...
     //
-    //    std::vector<HighsMipSolver> worker_mipsolvers;
-    //    worker_mipsolvers.push_back(HighsMipSolver{*callback_, *options_mip_,
-    //    *model_,
-    //					       null_solution, false, 0});
-    //    HighsMipSolver& worker_mipsolver = worker_mipsolvers[0];
+    std::vector<HighsMipSolver> worker_mipsolvers;
+    worker_mipsolvers.push_back(HighsMipSolver{
+        *callback_, *options_mip_, *model_, null_solution, false, 0});
+    HighsMipSolver& worker_mipsolver = worker_mipsolvers[0];
 
     // ... but currently can only do this
     //
-    HighsMipSolver worker_mipsolver(*callback_, *options_mip_, *model_,
-                                    null_solution, false, 0);
+    // HighsMipSolver worker_mipsolver(*callback_, *options_mip_, *model_,
+    //                                 null_solution, false, 0);
+
     worker_mipsolver.rootbasis = this->rootbasis;
     HighsPseudocostInitialization pscostinit(mipdata_->pseudocost, 1);
     worker_mipsolver.pscostinit = &pscostinit;

src/mip/HighsMipSolver.h

@@ -83,6 +83,13 @@ class HighsMipSolver {
     return model_->integrality_[col];
   }
 
+  // Contstructor from reference.
+  HighsMipSolver(const HighsMipSolver& mip_solver_);
+
+  // Constructor without solution. 
+  HighsMipSolver(HighsCallback* callback,
+                 const HighsOptions* options, const HighsLp* lp);
+
   HighsMipSolver(HighsCallback& callback, const HighsOptions& options,
                  const HighsLp& lp, const HighsSolution& solution,
                  bool submip = false, HighsInt submip_level = 0);