diff options
Diffstat (limited to 'sql/sql_expression_cache.h')
| -rw-r--r-- | sql/sql_expression_cache.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sql/sql_expression_cache.h b/sql/sql_expression_cache.h index 031773adb9f..9c618a5ae9b 100644 --- a/sql/sql_expression_cache.h +++ b/sql/sql_expression_cache.h @@ -83,7 +83,11 @@ public: cache(c), hit(0), miss(0), state(UNINITED) {} +private: + // This can be NULL if the cache is already deleted Expression_cache *cache; + +public: ulong hit, miss; enum expr_cache_state state; @@ -91,6 +95,7 @@ public: void set(ulong h, ulong m, enum expr_cache_state s) {hit= h; miss= m; state= s;} + void detach_from_cache() { cache= NULL; } void fetch_current_stats() { if (cache) |