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Remove configure probe and related tests for getrlimit.

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getrlimit() is in SUSv2 and all targeted systems have it.

Windows doesn't have it.  We could just use #ifndef WIN32, but for a
little more explanation about why we're making things conditional, let's
retain the HAVE_GETRLIMIT macro.  It's defined in port.h for Unix systems.

On systems that have it, it's not necessary to test for RLIMIT_CORE,
RLIMIT_STACK or RLIMIT_NOFILE macros, since SUSv2 requires those and all
targeted systems have them.  Also remove references to a pre-historic
alternative spelling of RLIMIT_NOFILE, and coding that seemed to believe
that Cygwin didn't have it.

Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/CA+hUKGJ3LHeP9w5Fgzdr4G8AnEtJ=z=p6hGDEm4qYGEUX5B6fQ@mail.gmail.com
This commit is contained in:
Thomas Munro
2022-08-05 09:18:34 +12:00
parent ca1e85513e
commit bdb657edd6
10 changed files with 17 additions and 26 deletions
configureconfigure.ac
src
backend
storage
file
fd.c
tcop
postgres.c
bin
pg_ctl
pg_ctl.c
pgbench
pgbench.c
include
pg_config.h.inport.h
test
regress
pg_regress.c
tools
msvc
Solution.pm

4
src/backend/storage/file/fd.c

@ -895,11 +895,7 @@ count_usable_fds(int max_to_probe, int *usable_fds, int *already_open)
fd = (int *) palloc(size * sizeof(int));
#ifdef HAVE_GETRLIMIT
#ifdef RLIMIT_NOFILE /* most platforms use RLIMIT_NOFILE */
getrlimit_status = getrlimit(RLIMIT_NOFILE, &rlim);
#else /* but BSD doesn't ... */
getrlimit_status = getrlimit(RLIMIT_OFILE, &rlim);
#endif /* RLIMIT_NOFILE */
if (getrlimit_status != 0)
ereport(WARNING, (errmsg("getrlimit failed: %m")));
#endif /* HAVE_GETRLIMIT */