Launching a new primary process from a primary

Launching a new primary process from a primary

[Antonio Di Bacco]

I know, because I was told by Anatoly Burakov (DPDK developer), that
it is possible to launch a new primary from within a primary using
system() syscall or fork but a few FDs should be closed. Do you know
of a DPDK example that exemplifies such a procedure?

If you don't follow the exact procedure you can generate a deadlock.
This is what I've been told:

There is a way to launch a primary process from another primary in our
test app - if you check the code, it closes a bunch of fd's before
launching the process - that's most likely what you need to do as that
would be what causes the deadlocks (concurrent access from multiple
processes who think they're primaries).

Do you know where can I find the "test app".


Thx.

Re: Launching a new primary process from a primary

[Dmitry Kozlyuk]

2022-09-11 19:55 (UTC+0200), Antonio Di Bacco:
> Do you know where can I find the "test app".

http://git.dpdk.org/dpdk/tree/app/test/process.h#n75

Re: Launching a new primary process from a primary

[Antonio Di Bacco]

Thank you very much, Dmitry

On Sun, Sep 11, 2022 at 8:20 PM Dmitry Kozlyuk <dmitry.kozliuk@gmail.com> wrote:
>
> 2022-09-11 19:55 (UTC+0200), Antonio Di Bacco:
> > Do you know where can I find the "test app".
>
> http://git.dpdk.org/dpdk/tree/app/test/process.h#n75