On Thu, Mar 15, 2018 at 12:21 PM, Chapman Flack <c...@anastigmatix.net> wrote:
> On 03/15/2018 10:59 AM, Jeremy Finzel wrote: > > > WaitLatch function the same variable worker_spi_naptime without > referencing > > the configuration created in _PG_init. Am I missing something here? > > You can see the declaration of that variable up on line 56. > It's just an int variable static to worker_spi.c. > > The code you saw in _PG_init registers that variable to the > Grand Unified Configuration system (you can see where the address > of the variable, &worker_spi_naptime, is passed in that registration), > so the GUC system can handle setting or querying the value from SQL > (and config files, etc.). > > You can read more about the GUC system in > src/backend/utils/misc/README, src/backend/utils/misc/guc.c, and > src/include/utils/guc.h. > > -Chap > Thank you. I did see worker_spi_naptime definition, but I wanted to pass worker_spi_naptime as an argument instead into worker_spi_main so that I can control via SQL interface how frequently the worker SQL executes. Is this possible? Thanks, Jeremy
