diff options
Diffstat (limited to 'storage/innodb_plugin/include/dict0dict.ic')
| -rw-r--r-- | storage/innodb_plugin/include/dict0dict.ic | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/storage/innodb_plugin/include/dict0dict.ic b/storage/innodb_plugin/include/dict0dict.ic index 46e78df8272..1704e9c2d71 100644 --- a/storage/innodb_plugin/include/dict0dict.ic +++ b/storage/innodb_plugin/include/dict0dict.ic @@ -452,6 +452,48 @@ dict_table_zip_size( return(dict_table_flags_to_zip_size(table->flags)); } +/*********************************************************************//** +Obtain exclusive locks on all index trees of the table. This is to prevent +accessing index trees while InnoDB is updating internal metadata for +operations such as truncate tables. */ +UNIV_INLINE +void +dict_table_x_lock_indexes( +/*======================*/ + dict_table_t* table) /*!< in: table */ +{ + dict_index_t* index; + + ut_a(table); + ut_ad(mutex_own(&(dict_sys->mutex))); + + /* Loop through each index of the table and lock them */ + for (index = dict_table_get_first_index(table); + index != NULL; + index = dict_table_get_next_index(index)) { + rw_lock_x_lock(dict_index_get_lock(index)); + } +} + +/*********************************************************************//** +Release the exclusive locks on all index tree. */ +UNIV_INLINE +void +dict_table_x_unlock_indexes( +/*========================*/ + dict_table_t* table) /*!< in: table */ +{ + dict_index_t* index; + + ut_a(table); + ut_ad(mutex_own(&(dict_sys->mutex))); + + for (index = dict_table_get_first_index(table); + index != NULL; + index = dict_table_get_next_index(index)) { + rw_lock_x_unlock(dict_index_get_lock(index)); + } +} /********************************************************************//** Gets the number of fields in the internal representation of an index, including fields added by the dictionary system. |