Re: BUG #15964: vacuumdb.c:187:10: error: use of undeclared identifier 'FD_SETSIZE'

Tom Lane <tgl@sss.pgh.pa.us>

From: Tom Lane <tgl@sss.pgh.pa.us>

To: Alvaro Herrera <alvherre@2ndquadrant.com>

Cc: Michael Paquier <michael@paquier.xyz>, Andres Freund <andres@anarazel.de>, Dilip Kumar <dilipbalaut@gmail.com>, jungleboogie0@gmail.com, pgsql-bugs@lists.postgresql.org

Date: 2019-08-21T14:28:31Z

Lists: pgsql-bugs

Alvaro Herrera <alvherre@2ndquadrant.com> writes:
> I guess the other possibility is that there exists an operating system
> that returns file descriptors higher than its FD_SETSIZE, when some fds
> below FD_SETSIZE are still available.  Doesn't seem realistic.

I think POSIX requires open() to select the lowest unused FD.  Otherwise
tricks like closing and reopening stdout wouldn't work reliably.

			regards, tom lane

Commits

Fix error handling of vacuumdb when running out of fds
- a21ec1a959ef 9.5.20 landed
- eb91b8ee6572 9.6.16 landed
- 4fca1460099e 10.11 landed
- 5d76c8037329 11.6 landed
- 63fc3b124008 12.0 landed
Fix error handling of vacuumdb and reindexdb when running out of fds
- 71d84efba714 13.0 landed
Fix compilation failure of vacuumdb and reindexdb with OpenBSD
- 56f8f9624ba0 13.0 landed
Improve Assert output
- d78d452bc5ac 13.0 cited
Refactor parallelization processing code in src/bin/scripts/
- 5f3840370b63 13.0 cited
vacuumdb: enable parallel mode
- a17923204736 9.5.0 cited