Clock generation through UVC

In reply to dave_59:

Yup that’s the issue, even in my UVC I have a wait statement, I somehow overlooked it when posted example code for Alex. Thanks Dave for catching this.

always begin
        wait (clk_en == 1);
	while (clk_en) begin
	    clk = 1;
	    #clk_high_period;
	    clk = 0;
	    #clk_low_period;
	end
    end