OS Linux RH 7.3, ES2.1, ES3.0 question involves repeated use of signals. I've genned up signal support for INT and HUP as follows: 
#
# interrupt support
#

use POSIX;

$sigset =  POSIX::SigSet->new();

$actINT = POSIX::SigAction->new( 'SigInterrupt', $sigset, &POSIX::SA_N
+ODEFER );
$actHUP = POSIX::SigAction->new( 'SigHangup',    $sigset, &POSIX::SA_N
+ODEFER );

POSIX::sigaction( &POSIX::SIGINT, $actINT );
POSIX::sigaction( &POSIX::SIGHUP, $actHUP );

$SIGINT = 0;
$SIGHUP = 0;

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The variables $SIG* are just tweaked in the signal handlers. That's all that goes on in the handlers. I look for the tweaked value when I emerge from a select() loop and act accordingly. This all works fine for the first signal processed. SIGINT causes a delayed exit, as desired. SIGHUP causes state info to go to log, as desired. However, repeating SIGHUP after the first SIGHUP doesn't do diddly. Bigger however, repeating SIGHUP *again* does cause the signal to be noticed. And so it goes, with every other SIGHUP signal apparently being noticed. WTH? Signals are sent to the process at a leisurely interval, on the order of seconds, so I am not believing that there are any signal stacking issues going on here. :-)

Can anybody explain this?

Thanks!
rnd

In reply to POSIX signal handling in Perl 5.6.x by qzrrbz

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