Horton

Refactor CreateSharedMemoryAndSemaphores

Heikki Linnakangas <heikki.linnakangas@iki.fi>

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Commit: 69d903367cdea188bf865f4edd72a186cda9e689
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Date: 2023-12-03T14:09:42Z
Releases: 17.0 
Refactor CreateSharedMemoryAndSemaphores

For clarity, have separate functions for *creating* the shared memory
and semaphores at postmaster or single-user backend startup, and
for *attaching* to existing shared memory structures in EXEC_BACKEND
case. CreateSharedMemoryAndSemaphores() is now called only at
postmaster startup, and a new AttachSharedMemoryStructs() function is
called at backend startup in EXEC_BACKEND mode.

Reviewed-by: Tristan Partin, Andres Freund
Discussion: https://www.postgresql.org/message-id/7a59b073-5b5b-151e-7ed3-8b01ff7ce9ef@iki.fi

Files

PathChange+/−
src/backend/postmaster/postmaster.c modified +10 −10
src/backend/replication/walreceiver.c modified +2 −1
src/backend/storage/ipc/ipci.c modified +101 −77
src/backend/storage/lmgr/proc.c modified +1 −1
src/include/storage/ipc.h modified +3 −0

Discussion