Maybe I just don't understand..
but wont there _always_ be data to read from netstat?
to me, it seems as tho the loop _not_ work as intended, it
would always pass the can_read and read data from netstat and
never parse the other code?
Regards,
Ron
> -----Original Message-----
> From: David M. Lloyd [mailto:[EMAIL PROTECTED]]
> Sent: June 29, 2001 10:37
> To: Ronald J. Yacketta
> Cc: Perl
> Subject: RE: background processing (again?)
>
>
> On Thu, 28 Jun 2001, Ronald J. Yacketta wrote:
>
> > I have heard doing it this way will cause grief.. need blocking i/o or
> > something along that lines. Also, I head that the flow of the program
> > would _stop_ when reading the data...
> >
> > are there any other solutions?
>
> You can get around blocking I/O by using the IO::Select module:
>
> ### PERL
>
> open NETSTAT, "netstat -I hme0 $SLEEPTIME |" or die "Can't start
> netstat: $!\n";
>
> my $select = new IO::Select;
>
> $select->add_reader(\*NETSTAT);
>
> while (1) {
>
> if ($select->can_read(0)) {
> # There is data so read it
> } else {
> # do something else while we wait
> }
> }
>
> ### END PERL
>
> > P.S.
> > kk, I never did get you example code working under Solaris, it
> works fine
> > under Linux
>
> If you're talking about my code, be aware that 'netstat' takes different
> arguments based on which platform you're on.
>
> - D
>
> <[EMAIL PROTECTED]>
>
>
>
