[sr-dev] About child_init function

[Andrei Pelinescu-Onciul]

On Oct 04, 2010 at 14:44, Iñaki Baz Castillo <ibc at aliax.net> wrote:
> 2010/10/4 Andrei Pelinescu-Onciul <andrei at iptel.org>:
> > On Oct 02, 2010 at 18:30, Iñaki Baz Castillo <ibc at aliax.net> wrote:
> >> 2010/10/2 Daniel-Constantin Mierla <miconda at gmail.com>:
> >> >> So my question is: should I check the rank parameter in child_init
> >> >> function just to run the code for real workers?
> >> >
> >> > yes, check it. The phrases use same term, while in one case should be 'sip
> >> > worker process' to differentiate from other type of workers.
> >> >
> >> > Beware than from v3.0 you get also rank PROC_INIT, which is called for main
> >> > process after all mod_init functions were executed.
> >>
> >>
> >> Then, is it ok if I use:
> >>
> >>  if (rank==PROC_INIT || rank==PROC_MAIN || rank==PROC_TCP_MAIN)
> >>     return 0;
> >>
> >> ?
> >
> > Yes.
> >
> > Depending on what your code does you could also add PROC_RPC and
> > PROC_UNIXSOCK if you don't need to do anything in the RPC processes.
> > Do not do this if you implement some RPC function that uses some
> > local per process stuff you initialized in child_init() (for example
> >  a db connection, an open file).
> >>
> >>
> >> what about possible PROC_SCTP_MAIN (if it exists) and others?
> >
> > There is no PROC_SCTP_MAIN.
> >
> >> I've checked that all those special processes (non workers) as rack <=
> >> 0. Is it safe if I just apply the code for processes with rank > 0?
> >
> > Yes, but you might need the initialization to run for the RPC processes
> > (see above). If you use any timer you might also need the
> > initialization in the timer processes. In this case you could use:
> > if (rank > 0 || rank == PROC_TIMER || rank == PROC_RPC ||
> >       rank == PROC_UNIXSOCK)
> >
> > A rank > 0 means a normal sip-router worker process and values <=0 are
> > special.
> >
> >
> > Andrei
> > P.S.: PROC_UNIXSOCK is deprecated.
> 
> 
> Thanks Andrei. Where could I get the complete list DEFINE's for
> special processes? For example I expect there is also something as
> PROC_MI, is it?

sr_module.h, search for PROC_.

There is no PROC_MI. mi does not run child_init() functions in sr and I
think it didn't do so in k <= 1.5.
Being deprecated it probably makes no sense to fix it.


Andrei