Merge pull request #8210 from The-OpenROAD-Project-staging/grt-cugr-refactor

Grt cugr refactor further

Author: maliberty

src/grt/src/GlobalRouter.cpp

@@ -141,6 +141,7 @@ void GlobalRouter::clear()
 GlobalRouter::~GlobalRouter()
 {
   delete fastroute_;
+  delete cugr_;
   delete grid_;
   for (auto [ignored, net] : db_net_map_) {
     delete net;

src/grt/src/cugr/include/CUGR.h

@@ -4,6 +4,7 @@
 #include <csignal>
 #include <fstream>
 #include <iostream>
+#include <memory>
 #include <mutex>
 #include <set>
 #include <sstream>
@@ -67,20 +68,21 @@ class CUGR
   CUGR(odb::dbDatabase* db,
        utl::Logger* log,
        stt::SteinerTreeBuilder* stt_builder);
+  ~CUGR();
   void init(int min_routing_layer, int max_routing_layer);
   void route();
-  void write(const std::string& guide_file = "");
+  void write(const std::string& guide_file);
   NetRouteMap getRoutes();
 
  private:
   void sortNetIndices(std::vector<int>& netIndices) const;
   void getGuides(const GRNet* net,
-                 std::vector<std::pair<int, grt::BoxT<int>>>& guides);
+                 std::vector<std::pair<int, grt::BoxT>>& guides);
   void printStatistics() const;
 
-  Design* design_ = nullptr;
-  GridGraph* grid_graph_ = nullptr;
-  std::vector<GRNet*> gr_nets_;
+  std::unique_ptr<Design> design_;
+  std::unique_ptr<GridGraph> grid_graph_;
+  std::vector<std::unique_ptr<GRNet>> gr_nets_;
 
   odb::dbDatabase* db_;
   utl::Logger* logger_;