On Wed, Mar 29, 2017 at 9:42 AM, Caleb Spare <cesp...@gmail.com> wrote:
> I have a question about this runtime.KeepAlive call:
>
> https://github.com/golang/go/blob/041ecb697f0e867a2bb0bf219cc2fd5f77057c2e/src/os/dir_unix.go#L68
>
> (There are other examples in the stdlib as well, I think.)
>
> It seems to me that, strictly speaking, KeepAlive is unnecessary here
> since the compiler/runtime cannot know whether the loop will terminate
> before the result of the ReadDirent is seen. Is that true?
>
> I'm not arguing that the KeepAlive should be removed; it's probably
> best to stick with the pattern syscall(f.Fd(), ...);
> runtime.KeepAlive(f) in most cases. I'm just checking my understanding
> here.

Yes, I think you are correct.

Ian

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