Why use fork...join_none in SystemVerilog?

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davyzhu

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fork join_none

Hi all,

I found in most SystemVerilog example, people like to use fork...join_none pair (not the traditional fork...join pair). Is there some advantage to fork...join_none pair? Thanks!

Best regards,
Davy
 

system verilog fork

davyzhu said:
Hi all,

I found in most SystemVerilog example, people like to use fork...join_none pair (not the traditional fork...join pair). Is there some advantage to fork...join_none pair? Thanks!

Best regards,
Davy
Click to expand...

Classic fork..join is a "join all" construct. That's if you fork 2 threads, then both of them need to finish for the join to end. With join_none, one can spawn threads and continue, this is useful in launching multple input data streams for example.


Regards
Ajeetha, CVC
www.noveldv.com
 

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    davyzhu

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systemverilog join_none

Hi Ajeetha,

Thanks a lot!

Do you mean I can do below, thanks!
Code: 
initial begin
    fork
        launch input data stream 1;
        ... ...
        launch input data stream N;
    join_none
    
    do something related to data stream;
end

Best regards,
Davy
 

fork systemverilog

Hi Ajeetha,

Thanks a lot!

And I am curious about the fork...join_any(join the thread when thread that used least time is finished). I cannot image when "fork...join_any" is used?

Best regards,
Davy
 

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