my @arr = ...;
sub mySub {
  goto &{ sub {  # added line
    foreach ( @arr ) {
      if ( /^PIDTAB/ ... /^\n/ ) {
        next if ( /^(PIDTAB|\n)/ );

        while ( /\s+(\d+):\s+(\d+)\s*:\S+:\S+:D\s+/g ) {
           # do something
        }
      }
    }
  }}  # added line
}
[download]

will do the trick, since the sub {} will get a new pad (where the .. state is stored) each time mySub is called. This only works if the sub is a closure (uses an outer lexical); otherwise, the sub{} is treated more as if it were a kind of constant, and doesn't get a new pad each time the reference is returned by sub. If @arr isn't lexical, you can still force a closure by replacing

goto &{ sub {
[download]

with

my $dummy; goto &{ sub { $dummy if 0;
[download]

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