How replication log locking works?

[Rayed Al-Rashed <rayed.alrashed@saudi.net.sa>]

Hi,

I am building a small script that reads slapd replication log and do
some processing based on changes done to the LDAP database, I want my
script to delete all the data in the replication log file after
processing, of course I need to use a locking mechanism compatible with
slurpd implementation, I tried to look at the slurpd code, but frankly I
didn't understand much.
Does any one have any experience on how the replication log locking
works?

Thanks in aadvance

- Rayed