diff options
| author | Thomas Munro <tmunro@postgresql.org> | 2019-02-03 09:55:39 +0100 |
|---|---|---|
| committer | Thomas Munro <tmunro@postgresql.org> | 2019-02-03 12:47:26 +0100 |
| commit | f1bebef60ec8f557324cd3bfc1671da1318de968 (patch) | |
| tree | 7096dccb496fc2db2c227cf67afe97b36ecc4b5b /src/backend/storage/ipc | |
| parent | 0d1fe9f74e369a6066b18fcbc0a25d87cbdff7ce (diff) | |
Add shared_memory_type GUC.
Since 9.3 we have used anonymous shared mmap for our main shared memory
region, except in EXEC_BACKEND builds. Provide a GUC so that users
can opt for System V shared memory once again, like in 9.2 and earlier.
A later patch proposes to add huge/large page support for AIX, which
requires System V shared memory and provided the motivation to revive
this possibility. It may also be useful on some BSDs.
Author: Andres Freund (revived and documented by Thomas Munro)
Discussion: https://postgr.es/m/HE1PR0202MB28126DB4E0B6621CC6A1A91286D90%40HE1PR0202MB2812.eurprd02.prod.outlook.com
Discussion: https://postgr.es/m/2AE143D2-87D3-4AD1-AC78-CE2258230C05%40FreeBSD.org
Diffstat (limited to 'src/backend/storage/ipc')
| -rw-r--r-- | src/backend/storage/ipc/ipci.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/backend/storage/ipc/ipci.c b/src/backend/storage/ipc/ipci.c index 2849e47d99b..5965d3620f7 100644 --- a/src/backend/storage/ipc/ipci.c +++ b/src/backend/storage/ipc/ipci.c @@ -46,6 +46,8 @@ #include "storage/spin.h" #include "utils/snapmgr.h" +/* GUCs */ +int shared_memory_type = DEFAULT_SHARED_MEMORY_TYPE; shmem_startup_hook_type shmem_startup_hook = NULL; |