[UVM basics] UVM tree organizational structure

adopt parent In the form of , UVM Established a tree like organizational structure . In this tree structure , from run_test The instance created is the tree root （ Here is my_env） , And the name of the tree root is fixed , by uvm_test_top; Branches and leaves will grow after the roots , The process of growing branches and leaves requires my_env Of build_phase Manual implementation of . Whether it's roots or leaves , All must be uvm_component Or its derived class inherits .

Only uvm_component Can be the node of the tree , image my_transaction This kind of use uvm_object_utils The class implemented by a macro cannot be used as UVM Of the nodes of the tree .

UVM requirement UVM At the latest build_phase The period is complete