drt: decoupling of the OR singleton from DRT core code

src/drt/CMakeLists.txt

@@ -143,12 +143,11 @@ target_include_directories(drt_lib
 
 target_link_libraries(drt_lib
   PUBLIC
-    odb
-    stt
+    stt_lib
     OpenSTA
     utl_lib
     dst
-    dbSta
+    dbSta_lib
     Threads::Threads
     OpenMP::OpenMP_CXX
     ${Boost_LIBRARIES}
@@ -162,6 +161,7 @@ target_sources(drt
     src/pa/FlexPA_graphics.cpp
     src/MakeTritonRoute.cpp
     src/GraphicsFactory.cpp
+    src/ORDBInterface.cpp
 )
 
 target_include_directories(drt

src/drt/include/triton_route/TritonRoute.h

@@ -28,8 +28,6 @@
 
 #pragma once
 
-#include <tcl.h>
-
 #include <boost/asio/thread_pool.hpp>
 #include <list>
 #include <memory>
@@ -52,10 +50,6 @@ namespace utl {
 class Logger;
 }
 
-namespace gui {
-class Gui;
-}
-
 namespace stt {
 class SteinerTreeBuilder;
 }
@@ -78,6 +72,7 @@ struct FlexDRViaData;
 class frMarker;
 struct RouterConfiguration;
 class AbstractGraphicsFactory;
+class AbstractORDBInterface;
 
 struct ParamStruct
 {
@@ -113,7 +108,9 @@ class TritonRoute
             utl::Logger* logger,
             dst::Distributed* dist,
             stt::SteinerTreeBuilder* stt_builder,
-            std::unique_ptr<AbstractGraphicsFactory> graphics_factory);
+            std::unique_ptr<AbstractGraphicsFactory> graphics_factory,
+            std::unique_ptr<AbstractORDBInterface> or_db_interface,
+            int num_threads);
 
   frDesign* getDesign() const { return design_.get(); }
   utl::Logger* getLogger() const { return logger_; }
@@ -213,7 +210,6 @@ class TritonRoute
   std::unique_ptr<FlexDR> dr_;  // kept for single stepping
   stt::SteinerTreeBuilder* stt_builder_{nullptr};
   int num_drvs_{-1};
-  gui::Gui* gui_{nullptr};
   dst::Distributed* dist_{nullptr};
   bool distributed_{false};
   std::string dist_ip_;
@@ -226,6 +222,7 @@ class TritonRoute
   std::optional<boost::asio::thread_pool> dist_pool_;
   std::unique_ptr<FlexPA> pa_{nullptr};
   std::unique_ptr<AbstractGraphicsFactory> graphics_factory_{nullptr};
+  std::unique_ptr<AbstractORDBInterface> or_db_interface_{nullptr};
 
   void initDesign();
   void initGraphics();

src/drt/src/AbstractORDBInterface.h

@@ -0,0 +1,45 @@
+//////////////////////////////////////////////////////////////////////////////
+// BSD 3-Clause License
+//
+// Copyright (c) 2025, Precision Innovations Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// * Redistributions of source code must retain the above copyright notice, this
+//   list of conditions and the following disclaimer.
+//
+// * Redistributions in binary form must reproduce the above copyright notice,
+//   this list of conditions and the following disclaimer in the documentation
+//   and/or other materials provided with the distribution.
+//
+// * Neither the name of the copyright holder nor the names of its
+//   contributors may be used to endorse or promote products derived from
+//   this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+
+#pragma once
+
+namespace drt {
+
+class AbstractORDBInterface
+{
+ public:
+  virtual ~AbstractORDBInterface() = default;
+  virtual void readDb(const char* file_name) = 0;
+  virtual void writeDb(const char* file_name) = 0;
+};
+
+}  // namespace drt

src/drt/src/GraphicsFactory.cpp

@@ -34,12 +34,8 @@
 
 namespace drt {
 
-GraphicsFactory::GraphicsFactory()
-{
-}
-GraphicsFactory::~GraphicsFactory()
-{
-}
+GraphicsFactory::GraphicsFactory() = default;
+GraphicsFactory::~GraphicsFactory() = default;
 
 void GraphicsFactory::reset(frDebugSettings* settings,
                             frDesign* design,

src/drt/src/MakeTritonRoute.cpp

@@ -34,6 +34,7 @@
 #include "triton_route/MakeTritonRoute.h"
 
 #include "GraphicsFactory.h"
+#include "ORDBInterface.h"
 #include "dr/FlexDR_graphics.h"
 #include "ord/OpenRoad.hh"
 #include "pa/FlexPA_graphics.h"
@@ -70,14 +71,20 @@ void initTritonRoute(OpenRoad* openroad)
   sta::evalTclInit(tcl_interp, sta::drt_tcl_inits);
 
   drt::TritonRoute* router = openroad->getTritonRoute();
+
   std::unique_ptr<drt::AbstractGraphicsFactory> graphics_factory
       = std::make_unique<drt::GraphicsFactory>();
 
+  std::unique_ptr<drt::ORDBInterface> or_db_interface
+      = std::make_unique<drt::ORDBInterface>();
+
   router->init(openroad->getDb(),
                openroad->getLogger(),
                openroad->getDistributed(),
                openroad->getSteinerTreeBuilder(),
-               std::move(graphics_factory));
+               std::move(graphics_factory),
+               std::move(or_db_interface),
+               ord::OpenRoad::openRoad()->getThreadCount());
 }
 
 }  // namespace ord

src/drt/src/ORDBInterface.cpp

@@ -0,0 +1,49 @@
+//////////////////////////////////////////////////////////////////////////////
+// BSD 3-Clause License
+//
+// Copyright (c) 2025, Precision Innovations Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// * Redistributions of source code must retain the above copyright notice, this
+//   list of conditions and the following disclaimer.
+//
+// * Redistributions in binary form must reproduce the above copyright notice,
+//   this list of conditions and the following disclaimer in the documentation
+//   and/or other materials provided with the distribution.
+//
+// * Neither the name of the copyright holder nor the names of its
+//   contributors may be used to endorse or promote products derived from
+//   this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+
+#include "ORDBInterface.h"
+
+#include "ord/OpenRoad.hh"
+
+namespace drt {
+
+void ORDBInterface::readDb(const char* file_name)
+{
+  ord::OpenRoad::openRoad()->readDb(file_name);
+}
+
+void ORDBInterface::writeDb(const char* file_name)
+{
+  ord::OpenRoad::openRoad()->writeDb(file_name);
+}
+
+}  // namespace drt

src/drt/src/ORDBInterface.h

@@ -0,0 +1,48 @@
+//////////////////////////////////////////////////////////////////////////////
+// BSD 3-Clause License
+//
+// Copyright (c) 2025, Precision Innovations Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// * Redistributions of source code must retain the above copyright notice, this
+//   list of conditions and the following disclaimer.
+//
+// * Redistributions in binary form must reproduce the above copyright notice,
+//   this list of conditions and the following disclaimer in the documentation
+//   and/or other materials provided with the distribution.
+//
+// * Neither the name of the copyright holder nor the names of its
+//   contributors may be used to endorse or promote products derived from
+//   this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+
+#pragma once
+
+#include "AbstractORDBInterface.h"
+
+namespace drt {
+
+class ORDBInterface : public AbstractORDBInterface
+{
+ public:
+  ORDBInterface() = default;
+  ~ORDBInterface() = default;
+  void readDb(const char* file_name) override;
+  void writeDb(const char* file_name) override;
+};
+
+}  // namespace drt