Hi, I'm trying to make sure that multiple processes (not threads) access a common resource in a sequential fashion. My simple solution is to gain a lock on a file, like:

open(FH, ">>lock.txt") or die "can't open lock.txt: $!\n";
flock(FH, 2) or die "Can't flock lock.txt: $!\n";
now_access_the_common_resource();
close(FH);
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This seems to work fine. I'm wondering whether this is the most common practice, and whether there are "better" methods,or a simple module that does this. Thanks.