fork join
Fork-Join will start all the processes inside it parallel and wait for the completion of all the processes.
fork join example
In below example,
fork block will be blocked until the completion of process-1 and Process-2.
Both process-1 and Process-2 will start at the same time, Process-1 will finish at 5ns and Process-2 will finish at 20ns. fork-join will be unblocked at 20ns.
module fork_join;
initial begin
$display("-----------------------------------------------------------------");
fork
//-------------------
//Process-1
//-------------------
begin
$display($time,"\tProcess-1 Started");
#5;
$display($time,"\tProcess-1 Finished");
end
//-------------------
//Process-2
//-------------------
begin
$display($time,"\tProcess-2 Started");
#20;
$display($time,"\tProcess-2 Finished");
end
join
$display($time,"\tOutside Fork-Join");
$display("-----------------------------------------------------------------");
$finish;
end
endmodule
Simulator Output
----------------------------------------------------------------- 0 Process-1 Started 0 Process-2 Startedt 5 Process-1 Finished 20 Process-2 Finished 20 Outside Fork-Join -----------------------------------------------------------------
