UVM Callbacks

UVM callbacks allow modification of the behavior of UVM components and objects without changing their definition. They provide a way to insert user-defined behavior at specific points in the execution of a component or object.

Defining and Registering Callbacks

Callbacks are defined by creating classes derived from the uvm_callback class and overriding the do_callback() method. Once defined, a callback is registered to a component or object using the uvm_callbacks#(T,C)::register() method.

Executing Callbacks

When the do_callback() method of a component or object is called, all registered callbacks for that component or object are executed. This provides a way to insert custom behavior at specific points in a component's execution.