I better be more clearer and show some code.. So this is the father starting his children : 

#Start fork
    foreach my $xml_obj (@{$xml_ojects_ref}){
    my $pid = fork();
    if ($pid) {
        # parent
        push(@childs, $pid);
        $framework_child_procs{$pid} = 1;
    }elsif($pid == 0) {
        # child
        my $results = new testProcess($xml_obj,$fatherSN); #Test proce
+ss is a new run
        exit 0;
    }else {
        print ,"couldnt fork: $!";
        exit 1;
    }
    }

    #Wait for to end
    foreach my $child (@childs) {
    my $tmp = waitpid($child, 0);
    print "done with pid $tmp";
    }

[download]
This is the code (inside the father class) , which handles the CTRL+C: 
$SIG{INT}=\&ctrl_c_handler;

sub ctrl_c_handler
{
$SIG{'INT'}='IGNORE';
my @procs = keys (%{fatherProcess::framework_child_procs});
kill SIGUSR1 => @procs;


foreach my $child (@procs) {
my $tmp = waitpid($child, 0);
}
}

[download]
This is a code inside a child (this is how I start the threads inside a child actually): 
my $t = threads->new (sub{
         local $SIG{'USR1'}=sub {threads->exit();};
         \&$functions_name(@parameters);
      });

my $result = $t->join();

[download]
Now the signal (CTRL+C) comes from the user / CLI , then it catched by the father (going to ctrl_c_handler function) , and then ctrl_c_handler function suppose to send the USR1 signal to the threads - but the thread doesn't catch it. In addition - in the child (testProcess), before starting the thread , I have another USR1 handler , which caught - only after the thread is ending. I think your solution is not suitable here.. please help :)

In reply to Re^2: killing threads inside forks by mojo2405
in thread killing threads inside forks by mojo2405

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