On 2015-05-15 AM 10:39, Amit Langote wrote: > On 2015-05-15 AM 05:01, Pavel Stehule wrote: >> >> I am trying to start bgworker from bgworker and create communication >> between these process. I have a code based on test_shm_mq. This code fails >> because BackendPidGetProc doesn't find related bgworker process, although >> the registrant process is living >> > > One reason for this may be that the worker was not started with the flag > BGWORKER_SHMEM_ACCESS which is necessary to perform InitProcess() that would > initialize a PGPROC entry for it. But if you'd used the same method for > initializing workers as test_shm_mq_setup(), then it should have. >
It seems in addition, a BackgroundWorkerInitializeConnection() is also necessary for the PGPROC entry of the worker to be visible to others. I do not see that done anywhere in test_shm_mq(); so perhaps that's missing? Thanks, Amit -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
