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 36b530bc27f19c1e3c68e2977407ae3d805161b9..aecb6013f00d2287447d3cb3673f29efa79a3f7c 100644 (file)
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -1210,9 +1210,9 @@ 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 5b407e6ac56cdf0c9e0d6204165364738d4d76c7..d21780108bbd60713baa1fda3dbc4015169f5b3d 100644 (file)
--- a/src/include/storage/proc.h
+++ b/src/include/storage/proc.h
@@ -293,9 +293,9 @@ 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;