Re: Support worker_spi to execute the function dynamically.

On 2023-07-20 12:55, Michael Paquier wrote:
> On Thu, Jul 20, 2023 at 11:15:51AM +0900, Masahiro Ikeda wrote:
>> While I'm working on the thread[1], I found that the function of
>> worker_spi module fails if 'shared_preload_libraries' doesn't have
>> worker_spi.
>
> I guess that you were patching worker_spi to register dynamically a
> wait event and embed that in a TAP test or similar without loading it
> in shared_preload_libraries? FWIW, you could use a trick like what I
> am attaching here to load a wait event dynamically with the custom
> wait event API. You would need to make worker_spi_init_shmem() a bit
> more aggressive with an extra hook to reserve a shmem area size, but
> that's enough to show the custom wait event in the same backend as the
> one that launches a worker_spi dynamically, while demonstrating how
> the API can be used in this case.

Yes, you're right. When I tried using worker_spi to test wait event,
I found the behavior. And thanks a lot for your patch. I wasn't aware
of the way. I'll merge your patch to the tests for wait events.

Regards,
--
Masahiro Ikeda
NTT DATA CORPORATION