At the top: 

use Fcntl qw(:flock);

[download]

Immediately after the 'read open': 

flock(FH, LOCK_SH);

[download]

Change the 'write open' to: 

open(FH, "<+ $gb") or die "Could not open $gb: $!\n";
flock(FH, LOCK_EX);
seek(FH,0,0);
truncate(FH,0) or die "Could not truncate $gb: $!\n";

[download]

Once you use flock, make sure that every process that accesess the files also uses flock.

Also, the "local $/" should be in it's own block, otherwise anything else you add to the bottom of this script will be in "ultraslurp mode"

In reply to Re: Re: simple message board gone very wrong? by turnstep
in thread simple message board gone very wrong? by jptxs

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