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Protect statistic variables of subquery cache.

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unknown 2011-08-12 11:23:50 +03:00
parent 07e9d34c54
commit 78eacb556d
1 changed files with 5 additions and 2 deletions
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7
sql/sql_expression_cache.cc
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@ -157,6 +157,10 @@ error:
Expression_cache_tmptable::~Expression_cache_tmptable() Expression_cache_tmptable::~Expression_cache_tmptable()
{ {
/* Add accumulated statistics */
statistic_add(subquery_cache_miss, miss, &LOCK_status);
statistic_add(subquery_cache_hit, hit, &LOCK_status);
if (cache_table) if (cache_table)
free_tmp_table(table_thd, cache_table); free_tmp_table(table_thd, cache_table);
} }
@ -188,14 +192,13 @@ Expression_cache::result Expression_cache_tmptable::check_value(Item **value)
(uint)cache_table->status, (uint)ref.has_record)); (uint)cache_table->status, (uint)ref.has_record));
if ((res= join_read_key2(table_thd, NULL, cache_table, &ref)) == 1) if ((res= join_read_key2(table_thd, NULL, cache_table, &ref)) == 1)
DBUG_RETURN(ERROR); DBUG_RETURN(ERROR);
if (res) if (res)
{ {
subquery_cache_miss++;
miss++; miss++;
DBUG_RETURN(MISS); DBUG_RETURN(MISS);
} }
subquery_cache_hit++;
hit++; hit++;
*value= cached_result; *value= cached_result;
DBUG_RETURN(Expression_cache::HIT); DBUG_RETURN(Expression_cache::HIT);