Re: [INTERFACES] libpq + multiple connections ...
| От | Roberto Joao Lopes Garcia |
|---|---|
| Тема | Re: [INTERFACES] libpq + multiple connections ... |
| Дата | |
| Msg-id | 3.0.5.32.19991129101959.007a1490@pop.hipernet.com.br обсуждение исходный текст |
| Ответ на | Re: [INTERFACES] libpq + multiple connections ... ("E.E. Mellor" <eem21@cam.ac.uk>) |
| Ответы |
Re: [INTERFACES] libpq + multiple connections ...
|
| Список | pgsql-interfaces |
>> safely run two PQconnectdb() calls in parallel. But you can open two
>> connections in sequence and then use them in parallel;
>
So I could open, for exemple, 5 db connections (with PQconnectdb()) and
then create 5 threads and use those connections in eache thread. But how
about use PQreset() or PQfinish() inside the new created threads?
I used to test connection before send a query like bellow:
if(PQstatus(con)==CONNECTION_BAD) { PQreset(con); if(PQstatus(con)==CONNECTION_BAD) erro_fatal();
}
Should I protect the calls to those functions by an mutex?? Could it
work??? Which functions read or alter Qconnectdb()'s static array??
I think it is important to mark wich functions in Libpq is thread safe or
not.
Roberto
В списке pgsql-interfaces по дате отправления: