On Thu, Dec 21, 2006 at 11:42:04AM -0500, jamal ([email protected]) wrote:
> > > > Things like sockets/pipes can only benefit from direct kevent usage
> > > > instead of ->poll() and wrappers.
> > >
> > > You should be able change it to use those schemes when it detects
> > > that the kernel supports them.
> >
> > I.e. stat() for each new file descriptor - note, that _you_ asked it :)
>
> Didnt follow. Is there some issue with libevent you mean?
libevent provides file descriptor without any additional info about it -
so when it is added into the waiting subsystem, userspace must select
different usage cases (i.e. different kevent notifications for different
types of file descriptor - socket notifications for sockets and pipes,
poll/select for all others), this requires stat() call per provided file
descriptor.
Event addition/waiting itself is the same - only parameters (type and
requested event) are changed.
> cheers,
> jamal
--
Evgeniy Polyakov
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