7 May
2009
7 May
'09
3:38 p.m.
On Donnerstag, 7. Mai 2009, Andrei Pelinescu-Onciul wrote:
Andrei,
ok, then i need to review some modules. :-) For the child_init it should be
easy to fix, in the mod_destroy (for db shutdown and such) its perhaps a bit
harder.
Henning
also related
to this topic: I did a few tests with the dialog module
today. This module checks if it opens a DB connection two times in
child_init. I noticed that for the PROC_MAIN process child_init is called
two times. Is this correct?
Yes, it's called once with rank PROC_INIT, before forking
(so everything done here will be inherited by all the processes) and
another time with PROC_MAIN (here is the right place for forking other
processes that need tcp access).
In kamailio child_init for PROC_MAIN is only
called one time, thus many
modules open DB connections also for the main process.
DB connections should not be opened for PROC_INIT, PROC_MAIN or
PROC_TCP_MAIN. Depending on what one wants to do with the DB connections,
they might not need to be opened also for PROC_RPC/PROC_FIFO/PROC_UNIXSOCK
(but then no DB access will be possible from the rpc/fifo interface) and
maybe PROC_TIMER (if you never use the DB connection from a timer).