Change the autovacuum launcher to read pg_database directly, rather than

via the "flat files" facility.  This requires making it enough like a backend
to be able to run transactions; it's no longer an "auxiliary process" but
more like the autovacuum worker processes.  Also, its signal handling has
to be brought into line with backends/workers.  In particular, since it
now has to handle procsignal.c processing, the special autovac-launcher-only
signal conditions are moved to SIGUSR2.

Alvaro, with some cleanup from Tom

1 files changed, 3 insertions, 3 deletions

diff --git a/src/backend/utils/init/globals.c b/src/backend/utils/init/globals.c
index e4f5dfa5849..fe2cef87d3e 100644
--- a/src/backend/utils/init/globals.c
+++ b/src/backend/utils/init/globals.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/init/globals.c,v 1.109 2009/08/28 18:23:53 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/init/globals.c,v 1.110 2009/08/31 19:41:00 tgl Exp $
  *
  * NOTES
  *	  Globals used all over the place should be declared here and not
@@ -100,8 +100,8 @@ int			maintenance_work_mem = 16384;
 
 /*
  * Primary determinants of sizes of shared-memory structures.  MaxBackends is
- * MaxConnections + autovacuum_max_workers (it is computed by the GUC assign
- * hook):
+ * MaxConnections + autovacuum_max_workers + 1 (it is computed by the GUC
+ * assign hooks for those variables):
  */
 int			NBuffers = 1000;
 int			MaxBackends = 100;