On Mon, Feb 18, 2013 at 11:25:44PM +0530, Atri Sharma wrote: > >>>> Is there any way to locally synchronise the threads in my code,and > >>>> send the requests to the PostgreSQL backend one at a time? Like a waiting > >>>> queue in my code? > >>> > >>> Is this from the client code? That is easy from libpq using > >>> asynchronous queries. > >>> > >>> > >> > >> Actually, I haven't yet faced any such scenario.I was just thinking of all > >> the possibilities that can happen in this case.Hehehe > >> > >> If we want to do this from a function in PostgreSQL itself, would a local > >> synchronisation mechanism work? > > > > So your server-side function wants to start a new backend --- yeah, that > > works. /contrib/dblink does exactly that. Calling it from threads > > should have the same limitations you would normally have from libpq. > > > > > > Got that,thanks a ton! > > I will see the dblink code. > > BTW, is there no way to introduce a general synchronisation mechanism for > server side code? A kind of construct which would be the standard way to > manage synchronisation ? I was thinking of something on the lines of a > monitor.
You would use the standard methods, semaphores for processes, thread locks for threads. -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + It's impossible for everything to be true. + -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
