On Thu, 30 May 2002, Nancy McGough wrote:
The moment after I sent my message I saw a collision in my log
file! So now I want to update my Quick Start troubleshooting
section and tell people how to prevent that. It seems like using
a global LOCKFILE would be a pain on the system since messages
would then be processed in series rather than in parallel
(right?). What is the best way to do this (i.e., the least
resource intensive)?
On Thu, 30 May 2002, David W. Tamkin wrote:
As Ruud has posted, the best way is to save up all the information to
log and echo it at once from a TRAP statement. It isn't foolproof, but
it's far less vulnerable to collisions, and the risk of still having one
is less trouble than using a global lockfile.
How about this?
TEMPLOGFILE=$HOME/procmaillogtmp.$$
REALLOGFILE=$HOME/procmail.log
LOGFILE=$TEMPLOGFILE
TRAP="procmail -p DEFAULT=$REALLOGFILE /dev/null < $TEMPLOGFILE"
Seems like that would handle all synchronization issues nicely.
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