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-rw-r--r--src/backend/utils/misc/guc.c12
-rw-r--r--src/backend/utils/misc/postgresql.conf.sample7
2 files changed, 19 insertions, 0 deletions
diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index ddbeb34ce72..1756b48c4fe 100644
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -61,6 +61,7 @@
#include "replication/walreceiver.h"
#include "replication/walsender.h"
#include "storage/bufmgr.h"
+#include "storage/dsm_impl.h"
#include "storage/standby.h"
#include "storage/fd.h"
#include "storage/proc.h"
@@ -385,6 +386,7 @@ static const struct config_enum_entry synchronous_commit_options[] = {
*/
extern const struct config_enum_entry wal_level_options[];
extern const struct config_enum_entry sync_method_options[];
+extern const struct config_enum_entry dynamic_shared_memory_options[];
/*
* GUC option variables that are exported from this module
@@ -3336,6 +3338,16 @@ static struct config_enum ConfigureNamesEnum[] =
},
{
+ {"dynamic_shared_memory_type", PGC_POSTMASTER, RESOURCES_MEM,
+ gettext_noop("Selects the dynamic shared memory implementation used."),
+ NULL
+ },
+ &dynamic_shared_memory_type,
+ DEFAULT_DYNAMIC_SHARED_MEMORY_TYPE, dynamic_shared_memory_options,
+ NULL, NULL, NULL
+ },
+
+ {
{"wal_sync_method", PGC_SIGHUP, WAL_SETTINGS,
gettext_noop("Selects the method used for forcing WAL updates to disk."),
NULL
diff --git a/src/backend/utils/misc/postgresql.conf.sample b/src/backend/utils/misc/postgresql.conf.sample
index 70221f42918..707edf1d91d 100644
--- a/src/backend/utils/misc/postgresql.conf.sample
+++ b/src/backend/utils/misc/postgresql.conf.sample
@@ -123,6 +123,13 @@
#work_mem = 1MB # min 64kB
#maintenance_work_mem = 16MB # min 1MB
#max_stack_depth = 2MB # min 100kB
+#dynamic_shared_memory_type = posix # the default is the first option
+ # supported by the operating system:
+ # posix
+ # sysv
+ # windows
+ # mmap
+ # use none to disable dynamic shared memory
# - Disk -