Regarding this:
> *************** select_loop(int maxFd, fd_set *workerset
> *** 1092,1104 ****
> --- 1150,1160 ----
> fd_set saveSet = *workerset;
>
> #ifdef WIN32
> for (;;)
> {
> /*
> * sleep a quarter of a second before checking if we should
> terminate.
> + * XXX this certainly looks useless, why not just wait
> indefinitely?
> */
> struct timeval tv = {0, 250000};
>
There's another select_loop() in vacuumdb.c suggesting that the timeout
is used to check for cancel requests; as I understood while working on
the vacuumdb changes, select() is not interrupted in that case. I
suppose that means it's necessary here also. But on the other hand it's
quite possible that the original developer just copied what was in
pg_dump and that it's not actually needed; if that's the case, perhaps
it's better to rip it out from both places.
https://www.postgresql.org/message-id/20150122174601.gb1...@alvh.no-ip.org
--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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