UVM Sequence Item¶

Tips

• Use conditional compilation guards to avoid compiling the same include file more than once.
• Create user-defined transaction classes by extending the class uvm_sequence_item.
• Try to minimize the number of distinct transaction classes
• Register the transaction class with the factory using the macro `uvm_object_utils as the first line within the class.
• Do not use field macros. (This comes at a heavy cost in terms of performance)
• After the factory registration macro, declare any member variables (using the prefix m_ as a naming convention).
• Use the rand qualifier in front of any class member variables that might need to be randomized, now or in the future.
• After any member variables, define a constructor that includes a single string name argument with a default value of the empty string, a call to super.new(), and is otherwise empty.

  function new (string name = "");
    super.new(name);
  endfunction : new
  

• After the constructor, always override the convert2string, do_copy, do_compare, do_print, and do_record methods.
• Always instantiate transaction objects using the factory.

  var_name = transaction_type::type_id::create("var_name");
  

• In general, the string name of the transaction should be the same as the variable name.