diff options
Diffstat (limited to 'storage/xtradb/include/btr0sea.h')
| -rw-r--r-- | storage/xtradb/include/btr0sea.h | 61 |
1 files changed, 36 insertions, 25 deletions
diff --git a/storage/xtradb/include/btr0sea.h b/storage/xtradb/include/btr0sea.h index 6fa7a2d87bf..9f9c2b04191 100644 --- a/storage/xtradb/include/btr0sea.h +++ b/storage/xtradb/include/btr0sea.h @@ -11,8 +11,8 @@ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with -this program; if not, write to the Free Software Foundation, Inc., -51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +this program; if not, write to the Free Software Foundation, Inc., +51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA *****************************************************************************/ @@ -68,7 +68,8 @@ UNIV_INLINE btr_search_t* btr_search_get_info( /*================*/ - dict_index_t* index); /*!< in: index */ + dict_index_t* index) /*!< in: index */ + __attribute__((nonnull)); /*****************************************************************//** Creates and initializes a search info struct. @return own: search info struct */ @@ -141,13 +142,6 @@ btr_search_drop_page_hash_index( s- or x-latched, or an index page for which we know that block->buf_fix_count == 0 */ -/************************************************************************ -Drops a page hash index based on index */ -UNIV_INTERN -void -btr_search_drop_page_hash_index_on_index( -/*=====================================*/ - dict_index_t* index); /* in: record descriptor */ /********************************************************************//** Drops a possible page hash index when a page is evicted from the buffer pool or freed in a file segment. */ @@ -201,20 +195,24 @@ btr_search_validate(void); #endif /* defined UNIV_AHI_DEBUG || defined UNIV_DEBUG */ /********************************************************************//** -New functions to control split btr_search_index */ +Returns the adaptive hash index table for a given index key. +@return the adaptive hash index table for a given index key */ UNIV_INLINE hash_table_t* btr_search_get_hash_table( /*======================*/ const dict_index_t* index) /*!< in: index */ - __attribute__((nonnull,pure,warn_unused_result)); + __attribute__((pure,warn_unused_result)); +/********************************************************************//** +Returns the adaptive hash index latch for a given index key. +@return the adaptive hash index latch for a given index key */ UNIV_INLINE -rw_lock_t* +prio_rw_lock_t* btr_search_get_latch( /*=================*/ const dict_index_t* index) /*!< in: index */ - __attribute__((nonnull,pure,warn_unused_result)); + __attribute__((pure,warn_unused_result)); /*********************************************************************//** Returns the AHI partition number corresponding to a given index ID. */ @@ -234,29 +232,45 @@ btr_search_index_init( dict_index_t* index) /*!< in: index */ __attribute__((nonnull)); +/********************************************************************//** +Latches all adaptive hash index latches in exclusive mode. */ UNIV_INLINE void btr_search_x_lock_all(void); /*========================*/ +/********************************************************************//** +Unlatches all adaptive hash index latches in exclusive mode. */ UNIV_INLINE void btr_search_x_unlock_all(void); /*==========================*/ #ifdef UNIV_SYNC_DEBUG +/******************************************************************//** +Checks if the thread has locked all the adaptive hash index latches in the +specified mode. + +@return true if all latches are locked by the current thread, false +otherwise. */ +UNIV_INLINE +bool +btr_search_own_all( +/*===============*/ + ulint lock_type) + __attribute__((warn_unused_result)); /********************************************************************//** Checks if the thread owns any adaptive hash latches in either S or X mode. -@return TRUE if the thread owns at least one latch in any mode. */ +@return true if the thread owns at least one latch in any mode. */ UNIV_INLINE -ibool +bool btr_search_own_any(void) /*=====================*/ __attribute__((warn_unused_result)); #endif /** The search info struct in an index */ -struct btr_search_struct{ +struct btr_search_t{ ulint ref_count; /*!< Number of blocks in this index tree that have search index built i.e. block->index points to this index. @@ -305,19 +319,16 @@ struct btr_search_struct{ #endif /* UNIV_SEARCH_PERF_STAT */ #ifdef UNIV_DEBUG ulint magic_n; /*!< magic number @see BTR_SEARCH_MAGIC_N */ -/** value of btr_search_struct::magic_n, used in assertions */ +/** value of btr_search_t::magic_n, used in assertions */ # define BTR_SEARCH_MAGIC_N 1112765 #endif /* UNIV_DEBUG */ }; /** The hash index system */ -typedef struct btr_search_sys_struct btr_search_sys_t; - -/** The hash index system */ -struct btr_search_sys_struct{ - hash_table_t** hash_tables; /*!< the array of adaptive hash index, - tables mapping dtuple_fold values - to rec_t pointers on index pages */ +struct btr_search_sys_t{ + hash_table_t** hash_tables; /*!< the array of adaptive hash index + tables, mapping dtuple_fold values to + rec_t pointers on index pages */ }; /** The adaptive hash index */ |