I'm trying to use SIGUSR1 to force daemon writed in Perl to execute common tasks. But when Perl receives SIGUSR1 it handles this signal, everything seems to be ok but when it receives more than 1 signal in a few seconds (sometimes even 1 signal) it exits... 
#!/usr/bin/perl

use strict;
use POSIX;

my $sigset = POSIX::SigSet->new(&POSIX::SIGUSR1);
my $action = POSIX::SigAction->new(\&trap, $sigset, &POSIX::SA_SIGINFO
+);
POSIX::sigaction(&POSIX::SIGUSR1, $action);

#$SIG{USR1} = \&trap; #or install handler like this or "use sigtrap" w
+hatever

sub trap {
    print "got signal.\n";
}

print "My pid is: $$\n";

while(sleep(1)) {

}

[download]
$ perl test.pl 
My pid is: 3188
$ kill -SIGUSR1 3188 
got signal.
$ kill -SIGUSR1 3188
got signal.
---> script is terminated

[download]
C version works without any problems: 
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>

void usr1handler(int signal);

int main(void) {
    signal(SIGUSR1, usr1handler);

    printf("My pid is: %d\n", getpid());

    for(;;) {
        sleep(1);
    }
    return 0;
}

void usr1handler(int signal) {
    printf("Got a signal: %d\n", signal);
}

[download]
$ ./test 
My pid is: 3188
$ kill -SIGUSR1 3318
Got a signal called: 10
$ kill -SIGUSR1 3318
Got a signal called: 10
$ kill -SIGUSR1 3318
Got a signal called: 10
$ kill -SIGUSR1 3318
Got a signal called: 10
... it never exits

[download]
I'm using perl version v5.12.1 under Linux 2.6.34-12. Any suggestions is much appreciated.

In reply to How to prevent Perl from exit when SIGUSR1 recieved? by cmyker

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