Review Request: Replace thread usage with local event loop in kio/kio/hostinfo.cpp

[Dawit A]

On Mon, Aug 8, 2011 at 2:31 PM, Thomas Zander <zander at kde.org> wrote:
> On Monday 08 August 2011 18.35.13 Dawit A wrote:
>> #2. The original functions in this class were non-blocking. It is only
>> the new function I added that is a blocking call. And that is required
>> because of the need for a timeout when doing name lookups from the
>> urifilter plugins. Thos plugins perform a job that is time critical
>> and as such cannot be impeded by name lookups that will take too long
>> and hence the need for a timeout. If QHostInfo offered such interface,
>> then there will be no need for the newly added functions.
>
> Maybe naive; but would it not be simpler to wrap the Qt method like this?
>
>  const int id = QHostInfo::lookupHost ( hostname, receiver,  slot);
>  QTimer::singleshot(timeout, QHostInfo::abortHostLookup (id );

eh ? The version of QHostInfo::lookupHost you used above is non
blocking so the entire function becomes a non-blocking function which
is not what we want. Moreover, abortHostLookup is not a SLOT either.
It is simply a static member function. Perhaps I am missing something
here, but I fail to see how this is supposed to work.