diff options
Diffstat (limited to 'sql/sp_cache.cc')
| -rw-r--r-- | sql/sp_cache.cc | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/sql/sp_cache.cc b/sql/sp_cache.cc index 8972303ef03..d6445799a36 100644 --- a/sql/sp_cache.cc +++ b/sql/sp_cache.cc @@ -57,6 +57,20 @@ public: { my_hash_delete(&m_hashtable, (uchar *)sp); } + + /** + Remove all elements from a stored routine cache if the current + number of elements exceeds the argument value. + + @param[in] upper_limit_for_elements Soft upper limit of elements that + can be stored in the cache. + */ + void enforce_limit(ulong upper_limit_for_elements) + { + if (m_hashtable.records > upper_limit_for_elements) + my_hash_reset(&m_hashtable); + } + private: void init(); void cleanup(); @@ -228,6 +242,21 @@ ulong sp_cache_version() } +/** + Enforce that the current number of elements in the cache don't exceed + the argument value by flushing the cache if necessary. + + @param[in] c Cache to check + @param[in] upper_limit_for_elements Soft upper limit for number of sp_head + objects that can be stored in the cache. +*/ +void +sp_cache_enforce_limit(sp_cache *c, ulong upper_limit_for_elements) +{ + if (c) + c->enforce_limit(upper_limit_for_elements); +} + /************************************************************************* Internal functions *************************************************************************/ |