[Iftop-users] iftop on openbsd

Chris Lightfoot chris at ex-parrot.com
Fri, 29 Aug 2003 17:33:11 +0100


On Fri, Aug 29, 2003 at 05:26:45PM +0100, Paul Warren wrote:
> On Fri, Aug 29, 2003 at 05:13:02PM +0100, Chris Lightfoot wrote:

> > Try this patch: (not absolutely certain about the second
> > parameter to pcap_dispatch; try 1 if -1 doesn't work)
> > 
> > 
> > diff -u -r1.44 iftop.c
> > --- iftop.c     2003/05/20 21:14:37     1.44
> > +++ iftop.c     2003/08/29 16:10:06
> > @@ -528,7 +528,9 @@
> >  /* packet_loop:
> >   * Worker function for packet capture thread. */
> >  void packet_loop(void* ptr) {
> > -    pcap_loop(pd,-1,(pcap_handler)packet_handler,NULL);
> > +    /* Make sure that this thread is cancellable. */
> > +    while (pcap_dispatch(p, -1, (pcap_handler)packet_handler, NULL) != -1)
> > +        pcap_testcancel();
> >  }
> 
> ITYM pthread_testcancel,

yes

> and that'll nead the thread handle.

no, in fact.

> > (I should say that I don't recall being the one to put the
> > PCAP stuff in a thread. I have a horror of threads
> > anyway....)
> 
> No.  I don't understand threads, but I managed to figure out just enough
> to get them to start in different threads.  Obviously, I couldn't then
> figure out how to make the stop again - you fixed that bit, and
> therefore claim ownership of that functionality ;-)  It may be far less
> broken than when you first touched it, but you were the last one to
> touch it...

gah. ok, fair enough.

-- 
The University of California Department of Statistics...
where mean is normal, and deviation standard