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Commitfe00fec

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Rename ReservedBackends variable to SuperuserReservedConnections.
This is in preparation for adding a new reserved_connections GUC,but aligning the GUC name with the variable name is also a goodidea on general principle.Patch by Nathan Bossart. Reviewed by Tushar Ahuja and by me.Discussion:http://postgr.es/m/20230119194601.GA4105788@nathanxps13
1 parent6c1d5ba commitfe00fec

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4 files changed

+14
-14
lines changed

4 files changed

+14
-14
lines changed

‎src/backend/postmaster/postmaster.c

Lines changed: 10 additions & 10 deletions
Original file line numberDiff line numberDiff line change
@@ -204,15 +204,15 @@ char *Unix_socket_directories;
204204
char*ListenAddresses;
205205

206206
/*
207-
*ReservedBackends is the number of backends reserved for superuser use.
208-
* This number is taken out of the pool size given by MaxConnections so
209-
* number of backend slots available to non-superusers is
210-
* (MaxConnections -ReservedBackends). Note what this really means is
211-
* "if there are <=ReservedBackends connections available, only superusers
212-
* can make new connections" --- pre-existing superuser connections don't
213-
* count against the limit.
207+
*SuperuserReservedConnections is the number of backends reserved for
208+
*superuser use.This number is taken out of the pool size given by
209+
*MaxConnections sonumber of backend slots available to non-superusers is
210+
* (MaxConnections -SuperuserReservedConnections). Note what this really
211+
*means is"if there are <=SuperuserReservedConnections connections
212+
*available, only superuserscan make new connections" --- pre-existing
213+
*superuser connections don'tcount against the limit.
214214
*/
215-
intReservedBackends;
215+
intSuperuserReservedConnections;
216216

217217
/* The socket(s) we're listening to. */
218218
#defineMAXLISTEN64
@@ -908,11 +908,11 @@ PostmasterMain(int argc, char *argv[])
908908
/*
909909
* Check for invalid combinations of GUC settings.
910910
*/
911-
if (ReservedBackends >=MaxConnections)
911+
if (SuperuserReservedConnections >=MaxConnections)
912912
{
913913
write_stderr("%s: superuser_reserved_connections (%d) must be less than max_connections (%d)\n",
914914
progname,
915-
ReservedBackends,MaxConnections);
915+
SuperuserReservedConnections,MaxConnections);
916916
ExitPostmaster(1);
917917
}
918918
if (XLogArchiveMode>ARCHIVE_MODE_OFF&&wal_level==WAL_LEVEL_MINIMAL)

‎src/backend/utils/init/postinit.c

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -927,8 +927,8 @@ InitPostgres(const char *in_dbname, Oid dboid,
927927
* limited by max_connections or superuser_reserved_connections.
928928
*/
929929
if (!am_superuser&& !am_walsender&&
930-
ReservedBackends>0&&
931-
!HaveNFreeProcs(ReservedBackends))
930+
SuperuserReservedConnections>0&&
931+
!HaveNFreeProcs(SuperuserReservedConnections))
932932
ereport(FATAL,
933933
(errcode(ERRCODE_TOO_MANY_CONNECTIONS),
934934
errmsg("remaining connection slots are reserved for superusers")));

‎src/backend/utils/misc/guc_tables.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -2163,7 +2163,7 @@ struct config_int ConfigureNamesInt[] =
21632163
gettext_noop("Sets the number of connection slots reserved for superusers."),
21642164
NULL
21652165
},
2166-
&ReservedBackends,
2166+
&SuperuserReservedConnections,
21672167
3,0,MAX_BACKENDS,
21682168
NULL,NULL,NULL
21692169
},

‎src/include/postmaster/postmaster.h

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -15,7 +15,7 @@
1515

1616
/* GUC options */
1717
externPGDLLIMPORTboolEnableSSL;
18-
externPGDLLIMPORTintReservedBackends;
18+
externPGDLLIMPORTintSuperuserReservedConnections;
1919
externPGDLLIMPORTintPostPortNumber;
2020
externPGDLLIMPORTintUnix_socket_permissions;
2121
externPGDLLIMPORTchar*Unix_socket_group;

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