Prior patches got rid of all the uses of SHM_QUEUE. ilist.h style lists are more widely used and have an easier to use interface. As there are no users left, .
d137cb52cb Remove SHM_QUEUE
src/backend/storage/ipc/Makefile | 1 -
src/backend/storage/ipc/meson.build | 1 -
src/backend/storage/ipc/shmqueue.c | 190 ------------------------------------
src/include/storage/shmem.h | 22 -----
src/tools/pgindent/typedefs.list | 1 -
5 files changed, 215 deletions(-)
Upstream: git.postgresql.org