New() and create()

UVM
,
1

i have understand the new() and create() but confuse about their uses.
when and where to use these two.
Does it create any problem if i use new () instead create().

thanks
surya

2

It depends on if you want to use the Factory mechanism, both new() and create() will request memory and finish basic initialization for a specific object, however create() will gave you a object which probably pointed to a derived class.

3

In reply to caowangyang:

hi caowangyang,

that means in the derived class we don’t need to create the object if we use the create() in main class?
i am new to uvm . please don’t mind if it is an silly question

thanks
surya

4

In reply to snayak@aimstechnology.inc:

I could gave you an example here.


class a extends uvm_object;
   `uvm_object_utils(a)\

   ......
  
endclass : a

class b extends class a;
   `uvm_object_utils(b)\

   ......

endclass : b

a = new("a"); // Will just create a object pointed to a
a = a::type_id::create("a"); // Will create a object actually pointed to b if we use something like set_type_override_by_type(a.get_type(), b.get_type());

Hope it helps :)