Add GUC variables for stat tracking and timeout as PGDLLIMPORT

This helps integration of extensions with Windows.  The following
parameters are changed:
- idle_in_transaction_session_timeout (9.6 and newer versions)
- lock_timeout
- statement_timeout
- track_activities
- track_counts
- track_functions

Author: Pascal Legrand
Reviewed-by: Amit Kamila, Julien Rouhaud, Michael Paquier
Discussion: https://postgr.es/m/1579298868581-0.post@n3.nabble.com
Backpatch-through: 9.4

diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 682b088eda9e63f44939a82982e1b9837536d344..58e2e71c6fdd1f6c0ee10c0012d4894fca34cf52 100644 (file)
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -1163,9 +1163,9 @@ typedef struct PgStat_FunctionCallUsage
  * GUC parameters
  * ----------
  */
-extern bool pgstat_track_activities;
-extern bool pgstat_track_counts;
-extern int     pgstat_track_functions;
+extern PGDLLIMPORT bool pgstat_track_activities;
+extern PGDLLIMPORT bool pgstat_track_counts;
+extern PGDLLIMPORT int pgstat_track_functions;
 extern PGDLLIMPORT int pgstat_track_activity_query_size;
 extern char *pgstat_stat_directory;
 extern char *pgstat_stat_tmpname;

diff --git a/src/include/storage/proc.h b/src/include/storage/proc.h
index cb613c8076ede2b3f71f89cbd719e433b4c53e37..95c9592b211077e7576fe3a8309882d100dc0293 100644 (file)
--- a/src/include/storage/proc.h
+++ b/src/include/storage/proc.h
@@ -291,9 +291,9 @@ extern PGPROC *PreparedXactProcs;
 
 /* configurable options */
 extern PGDLLIMPORT int DeadlockTimeout;
-extern int     StatementTimeout;
-extern int     LockTimeout;
-extern int     IdleInTransactionSessionTimeout;
+extern PGDLLIMPORT int StatementTimeout;
+extern PGDLLIMPORT int LockTimeout;
+extern PGDLLIMPORT int IdleInTransactionSessionTimeout;
 extern bool log_lock_waits;