Re^2: Easiest way to protect process from duplication.

[gnosti]

Here's a variation that uses the __DATA__ handle.

use Fcntl qw(LOCK_EX LOCK_NB);
die "Another instance is already running" unless flock DATA, LOCK_EX|L
+OCK_NB;

[JavaFan]

That actually requires a __DATA__ (or __END__) token to be present.

[kazak]

Thank you too. BTW __END__,__DATA__,etc is there any general name for these tokens, (like "Labeled blocks", "builtins",...)? I'm newbie in perl so I just wanted to read about this stuff.

[kazak]

Thank you for your post, that is what I really need.