Item instantiation vs. item creation

UVM
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1

I would like to understand the rule of item instantiation vs. the rule of item creation .

refmofel.sv file :


`uvm_analysis_imp_decl(_from_axi)
`uvm_analysis_imp_decl(_from_apb)

class refmodel extends uvm_component; 

   ram_item item;
   uvm_analysis_port #(ram_item) ram_analysis_port
   ...

   function void write_from_axi(axi_item axi_curr_item)
      item = ram_item::type_id::create("item");
      item.data = axi_curr_item.data;
      ram_analysis_port.write(item);
   endfunction : write_from_axi


   function void write_from_apb(apb_item apb_curr_item)
      item = ram_item::type_id::create("item");
      item.data =  apb_curr_item.data;
      ram_analysis_port.write(item);
   endfunction : write_from_apb


endclass

My question is on “item” of type ram_item.
If I instance 1 item and use it 2 times in 2 functions + create and send with write,
Is it OK to do that ?
or can cause issues ?

2

In reply to AL_verif:

Waht do you mean wrt to instantiation? If you consider an instance as compomemt, then you cannot instantiate an item because it is an object.

3

This will lead to serious issues, unless you can guarantee that
the two functions can never be called parallely for the same refmodel
instance.

I would move the ram_item declaration inside the functions.

4

In reply to logie:

OK. Thanks you!

5

In reply to logie:

But the each of the write functions are creating items separately … so why would this be a concern ?? Just a curious question ??