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Re: Signals and END block

by Gilimanjaro (Hermit)
on Aug 04, 2004 at 11:14 UTC ( [id://379956]=note: print w/replies, xml ) Need Help??


in reply to Signals and END block

I understand what you're trying to do, but I wouldn't use signals for this sort of thing...

You want the database-record to reflect the 'alive'-status of your perl-script right? But there's just no 'proper' way of doing this; if your scripts gets KILL-9'd, it doesn't get to execute *any* more code...

One way to sort-of be sure of sync-state, would be to have your perl-script update a timestamp in it's record every so-often (by using SIG_ALARM probably).

Another script then keeps an eye on all records that haven't had their timestamp updated for the same interval plus a safety margin of your choosing, and performs a clean-up for records that seem 'stale'.

Your original script could maybe die with a warning if it's update failed, because it would probably mean either a database connectivity issue, or it was incorrectly identified as gone but it willing to comply...

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