vacuumlazy.c: Save get_database_name() in vacrel.

This brings dbname strings in line with namespace and relation name
strings.

Author: Peter Geoghegan <pg@bowt.ie>
Discussion: https://postgr.es/m/CAH2-WzkQ1TKU-DdNvnGeL870di3+CU1UTo-7nw7xFDpVE-XGjA@mail.gmail.com

diff --git a/src/backend/access/heap/vacuumlazy.c b/src/backend/access/heap/vacuumlazy.c
index 21bd104f69d4081596b9b0d47d865f4086207914..a42e881da34c6374ee953eb3b01671febc6edfd4 100644 (file)
--- a/src/backend/access/heap/vacuumlazy.c
+++ b/src/backend/access/heap/vacuumlazy.c
@@ -172,6 +172,7 @@ typedef struct LVRelState
        bool            skippedallvis;
 
        /* Error reporting state */
+       char       *dbname;
        char       *relnamespace;
        char       *relname;
        char       *indname;            /* Current index name */
@@ -354,6 +355,7 @@ heap_vacuum_rel(Relation rel, VacuumParams *params,
         * these temp copies.
         */
        vacrel = (LVRelState *) palloc0(sizeof(LVRelState));
+       vacrel->dbname = get_database_name(MyDatabaseId);
        vacrel->relnamespace = get_namespace_name(RelationGetNamespace(rel));
        vacrel->relname = pstrdup(RelationGetRelationName(rel));
        vacrel->indname = NULL;
@@ -475,13 +477,13 @@ heap_vacuum_rel(Relation rel, VacuumParams *params,
                if (vacrel->aggressive)
                        ereport(INFO,
                                        (errmsg("aggressively vacuuming \"%s.%s.%s\"",
-                                                       get_database_name(MyDatabaseId),
-                                                       vacrel->relnamespace, vacrel->relname)));
+                                                       vacrel->dbname, vacrel->relnamespace,
+                                                       vacrel->relname)));
                else
                        ereport(INFO,
                                        (errmsg("vacuuming \"%s.%s.%s\"",
-                                                       get_database_name(MyDatabaseId),
-                                                       vacrel->relnamespace, vacrel->relname)));
+                                                       vacrel->dbname, vacrel->relnamespace,
+                                                       vacrel->relname)));
        }
 
        /*
@@ -650,7 +652,7 @@ heap_vacuum_rel(Relation rel, VacuumParams *params,
                                        msgfmt = _("automatic vacuum of table \"%s.%s.%s\": index scans: %d\n");
                        }
                        appendStringInfo(&buf, msgfmt,
-                                                        get_database_name(MyDatabaseId),
+                                                        vacrel->dbname,
                                                         vacrel->relnamespace,
                                                         vacrel->relname,
                                                         vacrel->num_index_scans);
@@ -2614,9 +2616,7 @@ lazy_check_wraparound_failsafe(LVRelState *vacrel)
 
                ereport(WARNING,
                                (errmsg("bypassing nonessential maintenance of table \"%s.%s.%s\" as a failsafe after %d index scans",
-                                               get_database_name(MyDatabaseId),
-                                               vacrel->relnamespace,
-                                               vacrel->relname,
+                                               vacrel->dbname, vacrel->relnamespace, vacrel->relname,
                                                vacrel->num_index_scans),
                                 errdetail("The table's relfrozenxid or relminmxid is too far in the past."),
                                 errhint("Consider increasing configuration parameter \"maintenance_work_mem\" or \"autovacuum_work_mem\".\n"