pgsql: Revert "Consistently test for in-use shared memory." - Mailing list pgsql-committers

Revert "Consistently test for in-use shared memory."

This reverts commits 2f932f71d9f2963bbd201129d7b971c8f5f077fd,
16ee6eaf80a40007a138b60bb5661660058d0422 and
6f0e190056fe441f7cf788ff19b62b13c94f68f3.  The buildfarm has revealed
several bugs.  Back-patch like the original commits.

Discussion: https://postgr.es/m/20190404145319.GA1720877@rfd.leadboat.com

Branch
------
master

Details
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https://git.postgresql.org/pg/commitdiff/82150a05be0dc8a8ec708d1f6e6e1ef26c0e58d4

Modified Files
--------------
src/Makefile.global.in              |   4 +-
src/backend/port/sysv_shmem.c       | 257 +++++++++++++++---------------------
src/backend/port/win32_shmem.c      |   7 +-
src/backend/postmaster/postmaster.c |  12 +-
src/backend/storage/ipc/ipci.c      |  14 +-
src/backend/utils/init/postinit.c   |   6 +-
src/include/storage/ipc.h           |   2 +-
src/include/storage/pg_shmem.h      |   6 +-
src/test/perl/PostgresNode.pm       | 184 ++++++--------------------
src/test/recovery/t/017_shm.pl      | 177 -------------------------
src/tools/msvc/vcregress.pl         |   1 -
11 files changed, 177 insertions(+), 493 deletions(-)