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Allow dynamic allocation of shared memory segments.

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Patch by myself and Amit Kapila.  Design help from Noah Misch.  Review
by Andres Freund.
This commit is contained in:
Robert Haas
2013-10-09 21:05:02 -04:00
parent f566515192
commit 0ac5e5a7e1
18 changed files with 2470 additions and 29 deletions
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12
src/backend/utils/misc/guc.c
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@ -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
@ -3335,6 +3337,16 @@ static struct config_enum ConfigureNamesEnum[] =
NULL, NULL, NULL
},
{
{"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."),