Update pgrowlocks extension for parallel query.

The pgrowlocks function provided by this extension is PARALLEL SAFE.

Andreas Karlsson

contrib/pgrowlocks/Makefile

@@ -4,7 +4,8 @@ MODULE_big	= pgrowlocks
 OBJS		= pgrowlocks.o $(WIN32RES)
 
 EXTENSION = pgrowlocks
-DATA = pgrowlocks--1.1.sql pgrowlocks--1.0--1.1.sql pgrowlocks--unpackaged--1.0.sql
+DATA = pgrowlocks--1.2.sql pgrowlocks--1.1--1.2.sql pgrowlocks--1.0--1.1.sql \
+	pgrowlocks--unpackaged--1.0.sql
 PGFILEDESC = "pgrowlocks - display row locking information"
 
 ifdef USE_PGXS

contrib/pgrowlocks/pgrowlocks--1.1--1.2.sql

@@ -0,0 +1,6 @@
+/* contrib/pgrowlocks/pgrowlocks--1.1--1.2.sql */
+
+-- complain if script is sourced in psql, rather than via ALTER EXTENSION
+\echo Use "ALTER EXTENSION pgrowlocks UPDATE TO '1.2'" to load this file. \quit
+
+ALTER FUNCTION pgrowlocks(text) PARALLEL SAFE;

contrib/pgrowlocks/pgrowlocks--1.2.sql

@@ -12,4 +12,4 @@ CREATE FUNCTION pgrowlocks(IN relname text,
     OUT pids INTEGER[])		-- locker's process id
 RETURNS SETOF record
 AS 'MODULE_PATHNAME', 'pgrowlocks'
-LANGUAGE C STRICT;
+LANGUAGE C STRICT PARALLEL SAFE;

contrib/pgrowlocks/pgrowlocks.control

@@ -1,5 +1,5 @@
 # pgrowlocks extension
 comment = 'show row-level locking information'
-default_version = '1.1'
+default_version = '1.2'
 module_pathname = '$libdir/pgrowlocks'
 relocatable = true