Using get_config_object

OVM
,
3

In reply to cgales:

Hi cgales,

In order to overcome that issue I used ovm_object type to get the instance and then did casting to config_class handle, and it worked fine. But while getting same handle in driver I used config_class type so there is no need of casting and it worked fine. Can i know why? Below i am sending you snippet of my code.

class config_class extends ovm_object;
 
 `ovm_object_utils(config_class)

 function new(string name = "config_class");
 .....
 endfunction

 endclass

 class env extends ovm_env;

  `ovm_component_utils(env)

   config_class cfg;
    function new(string name = "env", ovm_component parent);
     .....
    endfunction 

    function void build();
     cfg = config_class::type_id::create("cfg");
     set_config_object("*","config_class",cfg,0);
    endfunction

 
 endclass: env

 class intr_driver extends ovm_driver #(seq_item);

 `ovm_component_utils(intr_driver)
  
  config_class cfg;

 function new(string name = "intr_driver", ovm_component parent = null);
 super.new(name, parent);
 endfunction 


 function void build();
 
  super.build();
  get_config_object("config_class",cfg,0);
 endfunction

 endclass: intr_driver

 class intr_monitor extends ovm_monitor;

  `ovm_component_utils(intr_monitor)

  config_class cfg;

  function new(string name = "intr_monitor", ovm_component parent = null);
  super.new(name, parent);
  ap=new("ovm_analysis_port",this);
  endfunction

// Earlier Implementaion without casting
/* function void build();

 super.build();                               // Tthis impleentation has throwm error
 get_config_object("config_class",cfg,0)
   
 endfunction */

// Later implementation
function void build();
 ovm_object temp;
 super.build();
 if(!get_config_object("config_class",temp,0)) // This worked fine
   $display("Cannot get config handle");

 if(!$cast(cfg,temp))
   $display("Casting failed");
 
 endfunction
 endclass:intr_monitor

Please let me know why it didn’t throw any error in case of driver?

Thank you,
Mohanish