MariaDB server is a community developed fork of MySQL server. Started by core members of the original MySQL team, MariaDB actively works with outside developers to deliver the most featureful, stable, and sanely licensed open SQL server in the industry.
rw_lock_t: Do not make writer_is_wait_ex a bit-field. There are no fields
yet that could be fused to the same machine word, but we play it safe,
because the field writer_is_wait_ex may be modified by several threads
simultaneously. Such fields should always be allocated an own machine
word.
dict_table_t: Change the type of all bit-fields to "unsigned". Make
"space" a bit-field of 32 bits. Move name_hash and id_hash after all
bit-fields, so that the bit-fields can be allocated together. Do not
make autoinc_inited a bit-field, as we cannot allocate any field
from the same machine word.
dict_build_table_def_step(): Pass a local variable to
fil_create_new_single_table_tablespace() and initialize table->space
from it after the call, now that table->space is a bit-field.