In reply to dave_59:
Thank you so much for this example. I have few doubts about the code you shared with us.
import uvm_pkg::*;
`include "uvm_macros.svh"
class grandchild extends uvm_component;
`uvm_component_utils(grandchild)
function new(string name, uvm_component parent);
super.new(name,parent);
`uvm_info("new", "constructor",0);
endfunction
function void build_phase(uvm_phase phase);
`uvm_info("build", "phase",0);
endfunction
function void connect_phase(uvm_phase phase);
`uvm_info("connect", "phase",0);
endfunction
task run_phase(uvm_phase phase);
`uvm_info("run", "phase",0);
endtask
function void report_phase(uvm_phase phase);
`uvm_info("report", "phase",0);
endfunction
endclass
class child extends uvm_component;
grandchild gc1,gc2;
function new(string name, uvm_component parent);
super.new(name,parent);
`uvm_info("new", "constructor",0);
endfunction
function void build_phase(uvm_phase phase);
`uvm_info("build", "phase",0);
gc1 = grandchild::type_id::create("gc1",this);
`uvm_info("build", "created gc1",0);
gc2 = grandchild::type_id::create("gc2",this);
`uvm_info("build", "created gc2",0);
endfunction
function void connect_phase(uvm_phase phase);
`uvm_info("connect", "phase",0);
endfunction
task run_phase(uvm_phase phase);
`uvm_info("run", "phase",0);
endtask
function void report_phase(uvm_phase phase);
`uvm_info("report", "phase",0);
endfunction
endclass
class env extends uvm_env;
`uvm_component_utils(env)
child c1,c2;
function new(string name, uvm_component parent);
super.new(name,parent);
`uvm_info("new", "constructor",0);
endfunction
function void build_phase(uvm_phase phase);
`uvm_info("build", "phase",0);
c1 = new("c1",this);
c2 = new("c2",this);
endfunction
function void connect_phase(uvm_phase phase);
`uvm_info("connect", "phase",0);
endfunction
task run_phase(uvm_phase phase);
`uvm_info("run", "phase",0);
endtask
function void report_phase(uvm_phase phase);
`uvm_info("report", "phase",0);
endfunction
endclass : env
class test extends uvm_test;
`uvm_component_utils(test);
function new(string name, uvm_component parent);
super.new(name,parent);
`uvm_info("new", "constructor",0);
endfunction
env e;
function void build_phase(uvm_phase phase);
`uvm_info("build", "phase",0);
e = new("e",this);
endfunction
function void report_phase(uvm_phase phase);
uvm_component tmp=uvm_top.find("uvm_test_top.e");
env e;
$cast(e,uvm_top.find("uvm_test_top.e"));
`uvm_info("report", "phase",0)
e.print();
endfunction // report_phase
endclass
module top;
env e2;
initial begin
e2 =new("e2",null);
run_test("test");
end
endmodule1) Inside the test class, env class creation of objects has been done differently. I mean
we can use new, but should we not use the protocol; using
{ class_type::type_id::create(name of the object,this); }
2) Inside the top module an object of env class has been created. I didn't understand, why?
3)
function void report_phase(uvm_phase phase);
uvm_component tmp=uvm_top.find("uvm_test_top.e");
env e;
$cast(e,uvm_top.find("uvm_test_top.e"));
`uvm_info("report", "phase",0)
e.print();
endfunction // report_phase
Here when we were finding whether any object named e has been created or not we used the
path uvm_top.find("uvm_test_top.e") . Why didn't we use
uvm_test_top?find("uvm_test_top.e")? And also return type is uvm_component . Is the reason
as same as we know for the do_copy method having argument uvm_object i.e. implementation
of factory or something else?
