Thanks Guys, It looks like I need SIGCHLD & a little bit of waitpid,
Regards Marty > -----Original Message----- > From: $Bill Luebkert [mailto:[EMAIL PROTECTED]] > Sent: Wednesday 10 April 2002 13:59 > To: Martin Moss > Cc: Perl-Unix-Users > Subject: Re: [Perl-unix-users] Hard Total amount of Forks > > > Martin Moss wrote: > > > All, > > > > I wish to add forking to a script I wrote. > > However I wish to ensure that only a configurable number of > 'children' are > > created. > > > > forking is no problem, > > Queuing up things to be forked I can do, > > > > However is there an easy way to create a hard total, I was > thinking the only > > way is to have each fork write it's pid to a file, and delete it when it > > dies, and the main parent simply counts the number of pid files in a > > directory. if The Number is reached the parent may check with a > kill=>1 on > > each pid file just to check for non existing processes or > possibly kill -9'd > > processes. > > > > Or can I do it all in memory and have the parent control, maybe using > > signals? > > > > Has anybody done something simillar, can anybody suggest other methods? > > > What's the big deal ? You get the pid back after each fork, just store > it in an array and you can keep track of how many you have forked. > > Use waitpid to reap the children periodically (with WNOHANG unless the > parent has nothing else to do). > > -- > ,-/- __ _ _ $Bill Luebkert ICQ=14439852 > (_/ / ) // // DBE Collectibles Mailto:[EMAIL PROTECTED] > / ) /--< o // // http://dbecoll.tripod.com/ (Free site for Perl) > -/-' /___/_<_</_</_ Castle of Medieval Myth & Magic http://www.todbe.com/ _______________________________________________ Perl-Unix-Users mailing list [EMAIL PROTECTED] To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
