James Olin Oden wrote: > Hi All, > > This is really not a beginner question but I'm not sure what list to post it > on. > > I've created a daemon library for easily building daemons and at some > point code was added to handle closing all fd's so the daemonized > process would not have fd's hanging around it shouldn't have or didn't > expect to have. The code to close the fd was using POSIX::close(), > and this was a bad idea because, though it closes the fd, it leaves > any perl filehandles associated with the fd hanging around. This > makes for really twisty and perplexing bugs. > > So I don't want to do that, but I can't figure out for the life of me > how to get a hold of all filehandles associated with an fd, or to > close all filehandles associated with an fd. Is there a way to do > this? I tried walking through the symbol tables, but that won't get > lexically scoped and localized filehandles. How does one do this? > > BTW, at this moment I'm looking through perlio.c to try to see how the > filehandles and fd's are managed internally. If I had to I could > write a c routine to do this and expose it through XS. Any clues in > this area though, would be nice (like is there something already in > perlio.c to do this (-:). > > And of course pointing me to a more appropriate list is fine too. > > Thanks...james >
All daemons should periodically kill themselves and restart. This will: * Close forgotten file handles. * Free any memory leaks. * Remove zombie children. * Do other cleanup. This is best done by done by setting the daemon in the appropriate init(8) runlevel. -- Just my 0.00000002 million dollars worth, Shawn Programming is as much about organization and communication as it is about coding. I like Perl; it's the only language where you can bless your thingy. -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
