Add infrastructure for making spins_per_delay variable depending on

whether we seem to be running in a uniprocessor or multiprocessor.
The adjustment rules could probably still use further tweaking, but
I'm convinced this should be a win overall.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/include/storage/proc.h b/src/include/storage/proc.h
index 7297f444bfd..b915f78035e 100644
--- a/src/include/storage/proc.h
+++ b/src/include/storage/proc.h
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/storage/proc.h,v 1.82 2005/09/19 17:21:48 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/storage/proc.h,v 1.83 2005/10/11 20:41:32 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -105,6 +105,8 @@ typedef struct PROC_HDR
 {
 	/* Head of list of free PGPROC structures */
 	SHMEM_OFFSET freeProcs;
+	/* Current shared estimate of appropriate spins_per_delay value */
+	int			spins_per_delay;
 } PROC_HDR;