feat: implement clear3Dbx, server exit handling, and web UI tweaks

Signed-off-by: Jorge Ferreira <jorge.ferreira@precisioninno.com>

Author: jorge-ferreira-pii

include/ord/OpenRoad.hh

@@ -227,6 +227,7 @@ class OpenRoad
 
   void read3Dbv(const std::string& filename);
   void read3Dbx(const std::string& filename);
+  void clear3Dbx();
   void write3Dbv(const std::string& filename);
   void write3Dbx(const std::string& filename);
   void read3DBloxBMap(const std::string& filename);

src/OpenRoad.cc

@@ -499,8 +499,20 @@ void OpenRoad::read3Dbv(const std::string& filename)
   parser.readDbv(filename);
 }
 
+void OpenRoad::clear3Dbx()
+{
+  std::vector<odb::dbChip*> chips;
+  for (odb::dbChip* chip : db_->getChips()) {
+    chips.push_back(chip);
+  }
+  for (odb::dbChip* chip : chips) {
+    odb::dbChip::destroy(chip);
+  }
+}
+
 void OpenRoad::read3Dbx(const std::string& filename)
 {
+  clear3Dbx();
   odb::ThreeDBlox parser(logger_, db_, sta_);
   parser.readDbx(filename);
   check3DBlox();

src/OpenRoad.i

@@ -380,6 +380,13 @@ read_3dbx_cmd(const char *filename)
   ord->read3Dbx(filename);
 }
 
+void
+clear_3dbx_cmd()
+{
+  OpenRoad *ord = getOpenRoad();
+  ord->clear3Dbx();
+}
+
 void
 read_3dblox_bmap_cmd(const char *filename)
 {

src/OpenRoad.tcl

@@ -213,6 +213,14 @@ proc read_3dbx { args } {
   ord::read_3dbx_cmd $filename
 }
 
+sta::define_cmd_args "clear_3dbx" {}
+
+proc clear_3dbx { args } {
+  sta::parse_key_args "clear_3dbx" args keys {} flags {}
+  sta::check_argc_eq0 "clear_3dbx" $args
+  ord::clear_3dbx_cmd
+}
+
 sta::define_cmd_args "read_3dblox_bmap" {filename}
 
 proc read_3dblox_bmap { args } {

src/odb/src/db/dbChip.cpp

@@ -744,6 +744,13 @@ void dbChip::destroy(dbChip* chip_)
     auto chipConn = *chip_conns_itr++;
     dbChipConn::destroy(chipConn);
   }
+  // destroy chip nets
+  auto chip_nets = chip_->getChipNets();
+  auto chip_nets_itr = chip_nets.begin();
+  while (chip_nets_itr != chip_nets.end()) {
+    auto chipNet = *chip_nets_itr++;
+    dbChipNet::destroy(chipNet);
+  }
   // destroy chip insts
   auto chip_insts = chip_->getChipInsts();
   auto chip_insts_itr = chip_insts.begin();

src/odb/test/BUILD

@@ -186,6 +186,7 @@ COMPULSORY_TESTS = [
     "read_abstract_lef",
     "read_3dbv",
     "read_3dbx",
+    "read_3dbx_multiple",
     "read_db",
     "read_def",
     "read_def58",

src/odb/test/CMakeLists.txt

@@ -42,6 +42,7 @@ or_integration_tests(
     read_abstract_lef
     read_3dbv
     read_3dbx
+    read_3dbx_multiple
     read_db
     read_def
     read_def58

src/odb/test/read_3dbx_multiple.ok

@@ -0,0 +1 @@
+pass

src/odb/test/read_3dbx_multiple.tcl

@@ -0,0 +1,32 @@
+source "helpers.tcl"
+
+# 1. First read
+read_3dbx "data/example.3dbx"
+set db [ord::get_db]
+if { [$db getChip] == "NULL" } {
+  puts "FAIL: First read 3dbx Failed"
+  exit 1
+}
+
+# 2. Clear using explicit command
+clear_3dbx
+if { [$db getChip] != "NULL" } {
+  puts "FAIL: clear_3dbx failed to remove chip"
+  exit 1
+}
+
+# 3. Read again (should succeed since we cleared it)
+read_3dbx "data/example.3dbx"
+if { [$db getChip] == "NULL" } {
+  puts "FAIL: Second read 3dbx Failed"
+  exit 1
+}
+
+# 4. Third read without explicit clear (should automatically clear and succeed)
+read_3dbx "data/example.3dbx"
+if { [$db getChip] == "NULL" } {
+  puts "FAIL: Third read 3dbx Failed (auto-clear failed)"
+  exit 1
+}
+
+puts "pass"