Uvm_factory : preregistration

UVM
1

Hello,
//When overriding by type, the ~original_type~ and ~override_type~ are
// handles to the types’ proxy objects. Preregistration is not required.

// When overriding by name, the ~original_type_name~ typically refers to a
// preregistered type in the factory. It may, however, be any arbitrary
// string. Future calls to any of the ~create_*~ methods with the same string
// and matching instance path will produce the type represented by
// ~override_type_name~, which must be preregistered with the factory.
please any one can explain what is mean by preregistration?

2

I believe preregistration refers to the process of registering a class using the `uvm_object/component_utils macros. These macros, in turn, trigger the static variable initialization within the uvm_object/component_registry classes, which eventually call uvm_factory::register.

The type-based factory doesn’t require registration, but I’m not certain anyone would ever find themselves in that situation, considering the ease of registration provided by the registration macros.