Keep track of the last active slot in the shared ProcState array, so

that search loops only have to scan that far and not through all maxBackends
entries.  This eliminates a performance penalty for setting maxBackends
much higher than the average number of active backends.  Also, eliminate
no-longer-used 'backend tag' concept.  Remove setting of environment
variables at backend start (except for CYR_RECODE), since none of them
are being examined by the backend any longer.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/include/storage/sinval.h b/src/include/storage/sinval.h
index 32b51b5f43b..4c80f760faa 100644
--- a/src/include/storage/sinval.h
+++ b/src/include/storage/sinval.h
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: sinval.h,v 1.14 2000/01/26 05:58:33 momjian Exp $
+ * $Id: sinval.h,v 1.15 2000/11/12 20:51:52 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -27,7 +27,7 @@ extern void RegisterSharedInvalid(int cacheId, Index hashIndex,
 extern void InvalidateSharedInvalid(void (*invalFunction) (),
 												void (*resetFunction) ());
 
-extern bool DatabaseHasActiveBackends(Oid databaseId);
+extern bool DatabaseHasActiveBackends(Oid databaseId, bool ignoreMyself);
 extern bool TransactionIdIsInProgress(TransactionId xid);
 extern void GetXmaxRecent(TransactionId *XmaxRecent);