Perhaps I'm over looking something, but why not just, (assuming you need no interprocess communication, cause thats icky)

my $id = fork;
if( not $id )
{
  #child 1, assuming no errors
  exit;
}

my $id2 = fork;
if( not $id2 )
{
  #child 2,etc
  exit;
}

#parent
exit;
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