Re: Server->Client notification (without polling)? - Mailing list pgsql-novice

From Tom Lane
Subject Re: Server->Client notification (without polling)?
Date
Msg-id 18270.1158783343@sss.pgh.pa.us
Whole thread Raw
In response to Re: Server->Client notification (without polling)?  (Wolfgang Keller <wolfgang.keller.nospam@gmx.de>)
List pgsql-novice
Wolfgang Keller <wolfgang.keller.nospam@gmx.de> writes:
> I read the manual again and now I understand that it's the libpq client
> library which requires polling a function to retrieve the notifications
> received from the server. Is there no way to tell the library "please call me
> when a notification arrives"?

No, because it's only a library, it doesn't have its own thread of
control.

If you are so inclined you can set up your application's main loop to
watch for input on the database connection's socket (along with whatever
other event sources it watches) and then call the library to see what it
was.

            regards, tom lane

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