odb: lefin defin comments

Signed-off-by: Lucas Yuki Imamura <[email protected]>

src/odb/include/odb/defin.h

@@ -52,6 +52,8 @@ class dbTech;
 class defin
 {
   definReader* _reader;
+
+  // Protects the DefParser namespace that has static variables
   static std::mutex _def_mutex;
 
  public:

src/odb/include/odb/lefin.h

@@ -274,6 +274,8 @@ class lefin
 
  private:
   lefinReader* _reader;
+
+  // Protects the LefParser namespace that has static variables
   static std::mutex _lef_mutex;
 };
 

src/odb/src/defin/defin.cpp

@@ -39,6 +39,7 @@
 
 namespace odb {
 
+// Protects the DefParser namespace that has static variables
 std::mutex defin::_def_mutex;
 
 defin::defin(dbDatabase* db, utl::Logger* logger, MODE mode)

src/odb/src/lefin/lefin.cpp

@@ -55,6 +55,8 @@
 namespace odb {
 
 using LefParser::lefrSetRelaxMode;
+
+// Protects the LefParser namespace that has static variables
 std::mutex lefin::_lef_mutex;
 
 extern bool lefin_parse(lefinReader*, utl::Logger*, const char*);