Re: Asynchronous DNS

[Lars Ingebrigtsen]

YAMAMOTO Mitsuharu <address@hidden> writes:

>    845        #ifdef HAVE_GETADDRINFO_A
>    846          if (p->dns_request)
>    847            {
>    848              gai_cancel (p->dns_request);
>    849              free_dns_request (process);
>    850            }
>    851        #endif
>
> The man page says gai_cancel does not cancel the request if it is
> currently being processed.  So I suspect it is unsafe to free struct
> gaicb by calling free_dns_request if the request was not canceled
> actually.

Yes, I think you're right.  If we check the status and it's
EAI_CANCELLED, then it's safe to free the request.  However, what do we
do if it isn't safe?  This is in `delete-process', so the process object
itself is going to go away, and then we lose track of p->dns_request, so
we can't free it.  I think.

Anybody got any ideas for scheduling that free_dns_request?

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