Disable Statements in NCVLOG

anshman said:

I am using diable statements in the fork, join_none statments, after sometime I want to disable all the threads which were started by fork but it is not working. 

...

 in the above example task run_forever_t should stop after 199ns after fork was exercised but it keeps running,

Try "disable fork;"

 Shalom

 I have tried it, it is not woking. 

Thanks 

Anshuman

The disable only affect sub-processes in the current fork, so the code you've written is not right for what you're trying to do.
You should instead do something like this, which I tested:

module background;

task run_forever_t;
  forever #10 $display("tick");
endtask

initial begin
  $display("start");
  fork
    begin : background_process
      fork
        run_forever_t();
        #199;
      join_any;  // join after either thread finishes
      $display("tock");
      disable fork;  // kill the threads that haven't finished
    end : background_process
  join_none;
  #100;
  $display("Stopped");

end

endmodule

The outer fork allows the whole thing to run in the background, which I believe was your original intention.
The inner fork is needed so that the disable can kill off the run_forever() task.

Hope this helps.

Steve.

 Thanks ! 

It worked fine.

 Regards

Anshuman 

thanks guys...that did help