Furter pg_upgrade optimizations to reduce function call argument count.

contrib/pg_upgrade/check.c

@@ -209,8 +209,8 @@ void
 check_cluster_versions(void)
 {
 	/* get old and new cluster versions */
-	old_cluster.major_version = get_major_server_version(&old_cluster, &old_cluster.major_version_str);
-	new_cluster.major_version = get_major_server_version(&new_cluster, &new_cluster.major_version_str);
+	old_cluster.major_version = get_major_server_version(&old_cluster);
+	new_cluster.major_version = get_major_server_version(&new_cluster);
 
 	/* We allow upgrades from/to the same major version for alpha/beta upgrades */
 

contrib/pg_upgrade/info.c

@@ -15,8 +15,7 @@
 static void get_db_infos(ClusterInfo *cluster);
 static void dbarr_print(ClusterInfo *cluster);
 static void relarr_print(RelInfoArr *arr);
-static void get_rel_infos(ClusterInfo *cluster, const DbInfo *dbinfo,
-			  RelInfoArr *relarr);
+static void get_rel_infos(ClusterInfo *cluster, const int dbnum);
 static void relarr_free(RelInfoArr *rel_arr);
 static void map_rel(const RelInfo *oldrel,
 		const RelInfo *newrel, const DbInfo *old_db,
@@ -272,8 +271,7 @@ get_db_and_rel_infos(ClusterInfo *cluster)
 	get_db_infos(cluster);
 
 	for (dbnum = 0; dbnum < cluster->dbarr.ndbs; dbnum++)
-		get_rel_infos(cluster, &cluster->dbarr.dbs[dbnum],
-					  &cluster->dbarr.dbs[dbnum].rel_arr);
+		get_rel_infos(cluster, dbnum);
 
 	if (log_opts.debug)
 		dbarr_print(cluster);
@@ -290,9 +288,10 @@ get_db_and_rel_infos(ClusterInfo *cluster)
  * FirstNormalObjectId belongs to the user
  */
 static void
-get_rel_infos(ClusterInfo *cluster, const DbInfo *dbinfo, RelInfoArr *relarr)
+get_rel_infos(ClusterInfo *cluster, const int dbnum)
 {
-	PGconn	   *conn = connectToServer(cluster, dbinfo->db_name);
+	PGconn	   *conn = connectToServer(cluster,
+									   cluster->dbarr.dbs[dbnum].db_name);
 	PGresult   *res;
 	RelInfo    *relinfos;
 	int			ntups;
@@ -374,16 +373,16 @@ get_rel_infos(ClusterInfo *cluster, const DbInfo *dbinfo, RelInfoArr *relarr)
 		tblspace = PQgetvalue(res, relnum, i_spclocation);
 		/* if no table tablespace, use the database tablespace */
 		if (strlen(tblspace) == 0)
-			tblspace = dbinfo->db_tblspace;
+			tblspace = cluster->dbarr.dbs[dbnum].db_tblspace;
 		strlcpy(curr->tablespace, tblspace, sizeof(curr->tablespace));
 	}
 	PQclear(res);
 
 	PQfinish(conn);
 
-	relarr->rels = relinfos;
-	relarr->nrels = num_rels;
-	relarr->last_relname_lookup = 0;
+	cluster->dbarr.dbs[dbnum].rel_arr.rels = relinfos;
+	cluster->dbarr.dbs[dbnum].rel_arr.nrels = num_rels;
+	cluster->dbarr.dbs[dbnum].rel_arr.last_relname_lookup = 0;
 }
 
 

contrib/pg_upgrade/pg_upgrade.c

@@ -384,8 +384,6 @@ cleanup(void)
 	dbarr_free(&new_cluster.dbarr);
 	pg_free(log_opts.filename);
 	pg_free(os_info.user);
-	pg_free(old_cluster.major_version_str);
-	pg_free(new_cluster.major_version_str);
 	pg_free(old_cluster.controldata.lc_collate);
 	pg_free(new_cluster.controldata.lc_collate);
 	pg_free(old_cluster.controldata.lc_ctype);

contrib/pg_upgrade/pg_upgrade.h

@@ -179,7 +179,7 @@ typedef struct
 	char	   *bindir;			/* pathname for cluster's executable directory */
 	unsigned short port;		/* port number where postmaster is waiting */
 	uint32		major_version;	/* PG_VERSION of cluster */
-	char	   *major_version_str;		/* string PG_VERSION of cluster */
+	char	   major_version_str[64];		/* string PG_VERSION of cluster */
 	Oid			pg_database_oid;	/* OID of pg_database relation */
 	char	   *libpath;		/* pathname for cluster's pkglibdir */
 	char	   *tablespace_suffix;		/* directory specification */
@@ -357,7 +357,7 @@ PGresult *executeQueryOrDie(PGconn *conn, const char *fmt,...);
 
 void		start_postmaster(ClusterInfo *cluster, bool quiet);
 void		stop_postmaster(bool fast, bool quiet);
-uint32 get_major_server_version(ClusterInfo *cluster, char **verstr);
+uint32 get_major_server_version(ClusterInfo *cluster);
 void		check_for_libpq_envvars(void);
 
 

contrib/pg_upgrade/server.c

@@ -129,22 +129,21 @@ get_postmaster_pid(const char *datadir)
  * is retrieved by reading the PG_VERSION file.
  */
 uint32
-get_major_server_version(ClusterInfo *cluster, char **verstr)
+get_major_server_version(ClusterInfo *cluster)
 {
 	const char *datadir = cluster->pgdata;
 	FILE	   *version_fd;
-	char		ver_file[MAXPGPATH];
+	char		ver_filename[MAXPGPATH];
 	int			integer_version = 0;
 	int			fractional_version = 0;
 
-	*verstr = pg_malloc(64);
-
-	snprintf(ver_file, sizeof(ver_file), "%s/PG_VERSION", datadir);
-	if ((version_fd = fopen(ver_file, "r")) == NULL)
+	snprintf(ver_filename, sizeof(ver_filename), "%s/PG_VERSION", datadir);
+	if ((version_fd = fopen(ver_filename, "r")) == NULL)
 		return 0;
 
-	if (fscanf(version_fd, "%63s", *verstr) == 0 ||
-		sscanf(*verstr, "%d.%d", &integer_version, &fractional_version) != 2)
+	if (fscanf(version_fd, "%63s", cluster->major_version_str) == 0 ||
+		sscanf(cluster->major_version_str, "%d.%d", &integer_version,
+			   &fractional_version) != 2)
 	{
 		pg_log(PG_FATAL, "could not get version from %s\n", datadir);
 		fclose(version_fd);