HI everyone,
I need help with understanding what is happening when I fork a
process.Here is actual code:
#!/usr/bin/perl -w
use strict;
use Fcntl qw(:DEFAULT :flock);
use POSIX;
#use Mail::Mailer;
my ($pid);
$pid = open(HHH,"| infloop");
if($pid){
print HHH "bla bla \n";
}
where infloop is another perl program that just sits in the infinite
loop. Program as written is doing what it supposed: parent spawns another
process, prints stuff into it, and exits (because I do not close(HHH)).
However, if I uncomment line Mail::Mailer, the parent all of a sudden
would sit and wait for the child to exit, as if I called close(HHH). Would
anyone please explain it to me.
I already posted a message like that one before and did not get any
response. Please tell me if you you know the mailing list where I would
get a response for the problem like that one.
Thanks you in advance,
--Max
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