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support of concurent query cache resizing (BUG#12848)

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sql/mysql_priv.h:
  initialisation moved to mysqld.cc
sql/mysqld.cc:
  initialisation moved to mysqld.cc
sql/sql_cache.cc:
  support of concurent query cache resizing:
        - resizing made atomic
        - check stack size after each quard mutex lock
sql/sql_cache.h:
  initialisation moved to mysqld.cc
  removed uneed parameter (now it is always under guard mutex protection or called from destruction)
This commit is contained in:
unknown 2005-09-06 11:16:53 +03:00
commit f5f896b4b9
4 changed files with 86 additions and 36 deletions
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5
sql/sql_cache.h
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@ -310,10 +310,9 @@ protected:
Following function control structure_guard_mutex
by themself or don't need structure_guard_mutex
*/
void init();
ulong init_cache();
void make_disabled();
void free_cache(my_bool destruction);
void free_cache();
Query_cache_block *write_block_data(ulong data_len, gptr data,
ulong header_len,
Query_cache_block::block_type type,
@ -346,6 +345,8 @@ protected:
uint def_query_hash_size = QUERY_CACHE_DEF_QUERY_HASH_SIZE,
uint def_table_hash_size = QUERY_CACHE_DEF_TABLE_HASH_SIZE);
/* initialize cache (mutex) */
void init();
/* resize query cache (return real query size, 0 if disabled) */
ulong resize(ulong query_cache_size);
inline void result_size_limit(ulong limit){query_cache_limit=limit;}