troubleshooting Question

signal trapping in a daemonized server

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jjharr asked on
Perl
4 Comments1 Solution316 ViewsLast Modified:
I have a Perl daemon that operates as both a networking client and a server using various modules. It works fine.

Except... I need to introduce use of a periodic SIGALRM handler and that doesn't work fine. The handler runs once and then the program dies silently. Alarm code is below. I've grepped through most of the module sources and as far as I'm aware, none of them are using SIGALRM. If I eliminate the networking and just run a daemon with a while(1) loop, it works fine (but that's not so useful). I don't even know how to debug it. Any help would be very welcome.
local $SIG{'ALRM'} = \&logme;
setitimer(ITIMER_REAL, 10, 10);
 
sub { $log->info("Alarm handler");}
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