01. 全然動かずに終わるときは

/uvm-1.1d/examples/integrated/ubus/sv/ubus_master_seq_lib.sv

virtual class ubus_base_sequence extends uvm_sequence #(ubus_transfer);

  function new(string name="ubus_base_seq");

    super.new(name);

  endfunction

  // Raise in pre_body so the objection is only raised for root sequences.

  // There is no need to raise for sub-sequences since the root sequence

  // will encapsulate the sub-sequence.

  virtual task pre_body();

    if (starting_phase!=null) begin

       `uvm_info(get_type_name(),

                 $sformatf("%s pre_body() raising %s objection",

                           get_sequence_path(),

                           starting_phase.get_name()), UVM_MEDIUM);

       starting_phase.raise_objection(this);

    end

  endtask

  // Drop the objection in the post_body so the objection is removed when

  // the root sequence is complete.

  virtual task post_body();

    if (starting_phase!=null) begin

       `uvm_info(get_type_name(),

                 $sformatf("%s post_body() dropping %s objection",

                           get_sequence_path(),

                           starting_phase.get_name()), UVM_MEDIUM);

    starting_phase.drop_objection(this);

    end

  endtask

endclass : ubus_base_sequence