Allocate a few extra LWLocks for possible use by add-on modules.

Per request from Marc Munro.

diff --git a/src/backend/storage/lmgr/lwlock.c b/src/backend/storage/lmgr/lwlock.c
index aeacaf102aaee4a8a64374e7e6b3dee3918acd48..d649e0bd71216166d0fd9ef243e4fb15e77636bf 100644 (file)
--- a/src/backend/storage/lmgr/lwlock.c
+++ b/src/backend/storage/lmgr/lwlock.c
@@ -15,7 +15,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *       $PostgreSQL: pgsql/src/backend/storage/lmgr/lwlock.c,v 1.30 2005/09/16 00:30:05 tgl Exp $
+ *       $PostgreSQL: pgsql/src/backend/storage/lmgr/lwlock.c,v 1.31 2005/10/07 20:11:03 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -140,7 +140,8 @@ NumLWLocks(void)
         */
        numLocks += 2 * NUM_SLRU_BUFFERS;
 
-       /* Perhaps create a few more for use by user-defined modules? */
+       /* Leave a few extra for use by user-defined modules. */
+       numLocks += NUM_USER_DEFINED_LWLOCKS;
 
        return numLocks;
 }

diff --git a/src/include/pg_config_manual.h b/src/include/pg_config_manual.h
index bf82771d45c90380ba308dc4d7a634aaf124fd4a..0a97859ee25b60fb00c81046738c4a66b02e5942 100644 (file)
--- a/src/include/pg_config_manual.h
+++ b/src/include/pg_config_manual.h
@@ -6,7 +6,7 @@
  * for developers.     If you edit any of these, be sure to do a *full*
  * rebuild (and an initdb if noted).
  *
- * $PostgreSQL: pgsql/src/include/pg_config_manual.h,v 1.17 2005/10/03 22:55:56 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/pg_config_manual.h,v 1.18 2005/10/07 20:11:03 tgl Exp $
  *------------------------------------------------------------------------
  */
 
@@ -74,6 +74,11 @@
  */
 #define INDEX_MAX_KEYS         32
 
+/*
+ * Number of spare LWLocks to allocate for user-defined add-on code.
+ */
+#define NUM_USER_DEFINED_LWLOCKS       4
+
 /*
  * Define this to make libpgtcl's "pg_result -assign" command process
  * C-style backslash sequences in returned tuple data and convert