allow setting max number of iterations in IPOPTSolverLean

NSolver/IPOPTSolverLean.cc

@@ -41,13 +41,14 @@ class IPOPTSolverLean::Impl
 {// Create an instance of the IpoptApplication
 public:
   Impl() 
-    : app_(IpoptApplicationFactory()), alm_infsb_thrsh_(0.5), 
+    : app_(IpoptApplicationFactory()), max_iter_(200), alm_infsb_thrsh_(0.5),
     incr_lazy_cnstr_max_iter_nmbr_(5), enbl_all_lzy_cnstr_(true) 
   {}
 
 public:
   Ipopt::SmartPtr<Ipopt::IpoptApplication> app_;
 
+  int max_iter_;
   double alm_infsb_thrsh_; 
   int incr_lazy_cnstr_max_iter_nmbr_;
   bool enbl_all_lzy_cnstr_;
@@ -96,6 +97,16 @@ double IPOPTSolverLean::energy()
 
 //-----------------------------------------------------------------------------
 
+void IPOPTSolverLean::set_max_iterations(const int _max_iterations)
+{
+	impl_->max_iter_ = _max_iterations;
+}
+
+int IPOPTSolverLean::max_iterations() const
+{
+	return impl_->max_iter_;
+}
+
 double IPOPTSolverLean::almost_infeasible_threshold() const
 {
   return impl_->alm_infsb_thrsh_;
@@ -268,6 +279,8 @@ void IPOPTSolverLean::solve(
   std::vector<int> n_inf;
   std::vector<int> n_almost_inf;
 
+  // set max iterations
+  impl_->app_->Options()->SetIntegerValue("max_iter", impl_->max_iter_);
 
   while(!feasible_point_found && cur_pass < max_passes)
   {

NSolver/IPOPTSolverLean.hh

@@ -49,6 +49,12 @@ public:
 
   // *********** OPTIONS **************//
 
+  /*!
+  Set the maximum number of iterations
+  */
+  void set_max_iterations(const int _max_iterations);
+  int max_iterations() const;
+
   /*! 
   Set the threshold on the lazy inequality constraint to decide if we are near 
   the  constraint boundary.