Your program has a data race, since you are accessing the array from two
different goroutines.
Manlio
On Saturday, February 16, 2019 at 3:29:45 PM UTC+1, Hemant Singh wrote:
>
> I have the following program. The program is processing network packets
> at 1 Gbps rate. I don't want to print the rate for every packet. Instead,
> I'd like to save the rate in an array and dump the array on Ctrl-c of the
> program. When I dump the array on Ctrl-c, the data is all zeroes. Please
> see "<===" in the program below. Anything else one could do?
>
> Thanks.
>
> -Hemant
>
> func main() {
>
> const SZ = 65536
> var time_array [SZ]float64
>
> c := make(chan os.Signal)
> signal.Notify(c, os.Interrupt, syscall.SIGTERM)
>
> go func() {
> <-c
> fmt.Printf("You pressed ctrl + C. User interrupted infinite loop.")
> fmt.Printf("%v ", time_array); <=== all zeroes printed.
> os.Exit(0)
> }()
>
>
> i := 0
> for {
> ...
> time_array[i] = rate
> fmt.Printf("%f bps ", rate) <=== value printed is correct.
> i++
> }
> }
>
>
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