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karandeep963

Overloading/ Registering sc_export

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Hello All,

 

I am wandering for overloading sc_export.

 

Lets say at the target side I have 3 exports(same transaction type), so how to implement their write functions?

class abc : public sc_module,
                         public tlm_analysis_if<T> 
{
public:
    // defining port list

       // Analysis Ports
       sc_export<tlm::tlm_analysis_if<T > > exp_1;
    
       sc_export<tlm::tlm_analysis_if<T > > exp_2;

//// In the constructor
        exp_1(*this);
        exp_2(*this);



Declaration:

void write (const T& t){
  // What about implement exp_1
}

void write (const T& t){
// What about exp_2 

}

Please help me how to overload the write function?

 

Thanks,

Karandeep

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You can't use the "implement interface and export" idiom in this case, as you obviously can implement each function only once (for each transaction type).

 

You can use a small wrapper instead:

SC_MODULE(abc)
{
  typedef int T;
  sc_core::sc_export<tlm::tlm_analysis_if<T> > exp_1, exp_2;

  SC_CTOR(abc)
    : exp_1("exp_1")
    , exp_2("exp_2")
    , aw_1(*this,&abc::write_1) // create wrapper for each implementation
    , aw_2(*this,&abc::write_2)  
  {
    exp_1(aw_1); // bind wrappers
    exp_2(aw_2);
  }

private:

  void write_1( const T& ); // implementation for each export
  void write_2( const T& );

  struct analysis_wrapper
    : sc_core::sc_object, tlm::tlm_analysis_if<T>
  {
    typedef void (abc::*write_func)( const T& ); // pointer to member function with implementation

    analysis_wrapper( abc& owner, write_func f )
      : sc_core::sc_object(sc_core::sc_gen_unique_name("analysis_if"))
      , this_(owner), f_(f){}

    void write( const T& v ) { (this_.*f_)(v); } // forward call to registered implementation

   private:
    abc& this_;
    write_func f_;
  };

  analysis_wrapper aw_1, aw_2;
};

Hope that helps,
   Philipp

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