On 27 Dec 2000, at 19:56, Peter Pentchev wrote:
> On Wed, Dec 27, 2000 at 09:16:34AM -0800, Alfred Perlstein wrote:
> > * Dan Langille <[EMAIL PROTECTED]> [001226 23:50] wrote:
> > >
> > > My idea is to have a daemon, or something resembling one, sitting on
> > > the box watching the directory. When a new file appears, it starts a perl
> > > script. This perl script is beyound the scope of my question, but it
> > > processes all the files in the directory. When finished, it looks for any
> > > more files and repeats as necessary. If no more files, it exits.
> > >
> >
> > This isn't an answer to your main question (i see it's already been
> > discussed), but you may be able to use setup a kevent on the
> > directory which should inform you if any files are added to it.
>
> Unfortunately, I gather that Dan intends to write most of the FreshPorts
> code in Perl, and AFAIK, Perl has no kqueue/kevent interface :(
Unfortunately? *grin* FWIW, Most of the existing and new code will be
PHP based. Perl is used primarly for importing data from cvs-all. And
for various mailings out to users.
> Thus, to make use of kevent (which I certainly agree would be a better
> FreeBSD-specific solution), he'd have to either 1. have a C program
> which spawns Perl and his script on every change, or 2. have a C program
> which spawns Perl once and signals it on every change.
>
> The first way would be downright stupid IMHO.. The second one may
> very well be more efficient than the readdir, sleep solution which
> I proposed in other postings, seeing that Dan wants to process
> the cvs-all mailings, which certainly do not arrive every few seconds :)
I like the 2nd concept. It appeals to me. I haven't done any C in about
7 years and all of that was in Windows. Never in a Unix environment.
This solution is more complex than the "cron job every minute" which I
discussed with Mark, but it fits with my goal of having processed the
cvs-all messages as quickly as I can.
--
Dan Langille
The FreeBSD Diary - http://freebsddiary.org/
FreshPorts - http://freshports.org/
NZ Broadband - http://unixathome.org/broadband/
To Unsubscribe: send mail to [EMAIL PROTECTED]
with "unsubscribe freebsd-hackers" in the body of the message
