[CF 5319] v5 - Changing shared_buffers without restart

This branch was automatically generated by a robot using patches from an
email thread registered at:

https://commitfest.postgresql.org/patch/5319

The branch will be overwritten each time a new patch version is posted to
the thread, and also periodically to check for bitrot caused by changes
on the master branch.

Patch(es): https://www.postgresql.org/message-id/my4hukmejato53ef465ev7lk3sqiqvneh7436rz64wmtc7rbfj@hmuxsf2ngov2
Author(s): Dmitry Dolgov

Author: Commitfest Bot

src/backend/access/transam/xlog.c

@@ -2321,7 +2321,7 @@ CalculateCheckpointSegments(void)
 }
 
 void
-assign_max_wal_size(int newval, void *extra)
+assign_max_wal_size(int newval, void *extra, bool *pending)
 {
 	max_wal_size_mb = newval;
 	CalculateCheckpointSegments();

src/backend/commands/variable.c

@@ -1143,7 +1143,7 @@ check_cluster_name(char **newval, void **extra, GucSource source)
  * GUC assign_hook for maintenance_io_concurrency
  */
 void
-assign_maintenance_io_concurrency(int newval, void *extra)
+assign_maintenance_io_concurrency(int newval, void *extra, bool *pending)
 {
 	/*
 	 * Reconfigure recovery prefetching, because a setting it depends on
@@ -1161,12 +1161,12 @@ assign_maintenance_io_concurrency(int newval, void *extra)
  * they may be assigned in either order.
  */
 void
-assign_io_max_combine_limit(int newval, void *extra)
+assign_io_max_combine_limit(int newval, void *extra, bool *pending)
 {
 	io_combine_limit = Min(newval, io_combine_limit_guc);
 }
 void
-assign_io_combine_limit(int newval, void *extra)
+assign_io_combine_limit(int newval, void *extra, bool *pending)
 {
 	io_combine_limit = Min(io_max_combine_limit, newval);
 }

src/backend/libpq/pqcomm.c

@@ -1952,7 +1952,7 @@ pq_settcpusertimeout(int timeout, Port *port)
  * GUC assign_hook for tcp_keepalives_idle
  */
 void
-assign_tcp_keepalives_idle(int newval, void *extra)
+assign_tcp_keepalives_idle(int newval, void *extra, bool *pending)
 {
 	/*
 	 * The kernel API provides no way to test a value without setting it; and
@@ -1985,7 +1985,7 @@ show_tcp_keepalives_idle(void)
  * GUC assign_hook for tcp_keepalives_interval
  */
 void
-assign_tcp_keepalives_interval(int newval, void *extra)
+assign_tcp_keepalives_interval(int newval, void *extra, bool *pending)
 {
 	/* See comments in assign_tcp_keepalives_idle */
 	(void) pq_setkeepalivesinterval(newval, MyProcPort);
@@ -2008,7 +2008,7 @@ show_tcp_keepalives_interval(void)
  * GUC assign_hook for tcp_keepalives_count
  */
 void
-assign_tcp_keepalives_count(int newval, void *extra)
+assign_tcp_keepalives_count(int newval, void *extra, bool *pending)
 {
 	/* See comments in assign_tcp_keepalives_idle */
 	(void) pq_setkeepalivescount(newval, MyProcPort);
@@ -2031,7 +2031,7 @@ show_tcp_keepalives_count(void)
  * GUC assign_hook for tcp_user_timeout
  */
 void
-assign_tcp_user_timeout(int newval, void *extra)
+assign_tcp_user_timeout(int newval, void *extra, bool *pending)
 {
 	/* See comments in assign_tcp_keepalives_idle */
 	(void) pq_settcpusertimeout(newval, MyProcPort);

src/backend/port/posix_sema.c

@@ -193,7 +193,7 @@ PGSemaphoreShmemSize(int maxSemas)
  * we don't have to expose the counters to other processes.)
  */
 void
-PGReserveSemaphores(int maxSemas)
+PGReserveSemaphores(int maxSemas, int shmem_segment)
 {
 	struct stat statbuf;
 
@@ -220,7 +220,7 @@ PGReserveSemaphores(int maxSemas)
 	 * ShmemAlloc() won't be ready yet.
 	 */
 	sharedSemas = (PGSemaphore)
-		ShmemAllocUnlocked(PGSemaphoreShmemSize(maxSemas));
+		ShmemAllocUnlockedInSegment(PGSemaphoreShmemSize(maxSemas), shmem_segment);
 #endif
 
 	numSems = 0;

src/backend/port/sysv_sema.c

@@ -307,7 +307,7 @@ PGSemaphoreShmemSize(int maxSemas)
  * have clobbered.)
  */
 void
-PGReserveSemaphores(int maxSemas)
+PGReserveSemaphores(int maxSemas, int shmem_segment)
 {
 	struct stat statbuf;
 
@@ -328,7 +328,7 @@ PGReserveSemaphores(int maxSemas)
 	 * ShmemAlloc() won't be ready yet.
 	 */
 	sharedSemas = (PGSemaphore)
-		ShmemAllocUnlocked(PGSemaphoreShmemSize(maxSemas));
+		ShmemAllocUnlockedInSegment(PGSemaphoreShmemSize(maxSemas), shmem_segment);
 	numSharedSemas = 0;
 	maxSharedSemas = maxSemas;