new typedef to univ.i (ib_ulonglong). Added checks for overflow and removed
the assertion where it crashed previously, since the type has now changed
to unsigned, it doesn't make sense to check for < 0. Added new tests, to
check for overflow, for the different INT types supported for both
signed and unsigned.
Fixes Bug# 34335
pending and/or granted on a table. We peek at this value to determine whether
a transaction doing a simple INSERT in innodb_autoinc_lock_mode = 1, needs to
acquire the AUTOINC lock or not. This change is related to Bug# 16979.
adding column definitions to tables.
dict_mem_table_add_col(): Add the parameter "heap" for temporary memory
allocation. Allow it and "name" to be NULL. These parameters are NULL
when creating dummy indexes.
dict_add_col_name(): Remove calls to ut_malloc() and ut_free().
dict_table_get_col_name(): Allow table->col_names to be NULL.
dict_table_add_system_columns(), dict_table_add_to_cache():
Add the parameter "heap".
---
Additional changes that had to be merged from branches/zip:
dict_table_add_system_columns(): New function, factored out from
dict_table_add_to_cache().
mlog_parse_index(): Add some consistency checks, and make use of
dict_table_add_system_columns().
is one test that fails as of this commit. The updated test case should be
part of the snapshot from MySQL shortly.
Fix for bug# 27950 - Init AUTOINC from delete_row().
Fix for bug# 28781 - Use value specified by MySQL, in update_row().
Summary of structural changes:
==============================
InnoDB needs to hold a table level lock for AUTOINC allocations to overcome
the non-determinism inherent in MySQL SBR for INSERT ... SELECT. In this fix
for simple INSERT statements (including multi-value inserts), we try and avoid
acquiring the special AUTOINC table level lock unless another transaction has
already reserved the AUTOINC table level lock, in which case we fall back
to the old behavior of acquiring the AUTOINC table level lock.
The max AUTOINC value is now read directly using the low level interface
of InnoDB.
so that all integer fields can be packed into 64 bits. (Bug #20877)
dtype_t: Change the type of all bit-fields to unsigned.
dict_table_get_nth_col(), dict_table_get_sys_col_noninline(),
dict_table_get_sys_col(), dict_field_get_col(): Return const
dict_col_t*, so that changes to dict_col_t can be detected more
easily. Add const to many dict_col_t* declarations.
dict_index_get_nth_type(): Replace with dict_index_get_nth_col().
dict_col_get_type(): Replace with dict_col_copy_type().
dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(),
dict_col_get_sql_null_size(): New functions.
dtype_get_at_most_n_mbchars(): Replace the parameter dtype
with the parameters prtype, mbminlen, mbmaxlen.
dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(),
cmp_whole_field(): Replace the dtype_t* parameter with the ulint
parameters mtype, prtype.
dtype_copy(): Add a const qualifier to type2 (the one being copied from).
dtype_set_mblen(): Replaced with dtype_get_mblen().
dtype_get_fixed_size_low(), dtype_get_min_size_low(),
dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(),
dtype_get_min_size(), and dtype_get_max_size(). These are used by the
dict_col_get_{fixed,min,max}_size() functions.
cmp_types_are_equal(): Replace with cmp_cols_are_equal().
dict_table_get_col_name(): Add a const qualifier parameter to the
parameter "table".
dtype_binary, dtype_binary_val: Remove.
dtype_is_fixed_size(): Remove.
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.
There always was a one-to-one mapping between dict_tree_t and dict_index_t.
This saves 6 machine words per B-tree index in the data dictionary
cache plus the memory allocation overhead. We save one mem_heap_t
object per index (15 machine words). Considering the internal
fragmentation of the buddy allocator in mem_area_alloc(), this should
save 32 machine words per index (128 bytes on 32-bit systems and 256
bytes on 64-bit systems). (Bug #20877)
struct dict_tree_struct, dict_tree_t: Remove.
struct dict_index_struct: Add page and lock.
dict_tree_create(): Remove. Replace the invocation with
assignment to index->page and a call to rw_lock_create(&index->lock).
dict_tree_free(): Remove. Replace the invocation wtih
a call to rw_lock_free(&index->lock).
dict_index_get_tree(): Remove.
dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve()
and remove the parameter, which was unused.
btr_level_list_remove(): Remove the unused parameter "tree".
Replace the occurrences of "tree" with "index" in names of variables,
functions and data types, e.g. "dict_tree_t tree" becomes
"dict_index_t index". Remove local variables "tree" or "index" of
functions that needed both "tree" and "index".
dict_col_get_clust_pos(): Add parameter clust_index. Replace the
look-up with a linear search of all columns in the clustered index.
row_upd_index_replace_new_col_vals(): Compute clust_index outside
the loops. Compute clust_pos outside the inner loop.
row_upd_changes_ord_field_binary(), row_upd_changes_first_fields_binary():
Compute clust_index outside the loops. Declare the auxiliary variables
inside the loop scope.
dict_index_add_to_cache(): Instead of incrementing ord_part, set it.
dict_index_remove_from_cache(): Do not touch ord_part.
dtype_t: Reduce mbminlen from 3 to 2 bits.
row_upd(): Add a UNIV_LIKELY hint around node->in_mysql_interface.
dict_sys->col_hash, and DICT_POOL_PER_COL_HASH. (Bug #20877)
The col->table pointer was only needed for maintaining a hash table of
all defined columns in all tables. The hash table was only looked up
in dict_index_find_cols(). Removing the col->hash and col->table
pointers reduces the size of a table column by two machine words
(usually 8 or 16 bytes).
dict_col_add_to_cache(), dict_col_reposition_in_cache(),
dict_col_remove_from_cache(): Remove. These only updated dict_sys->col_hash.
dict_index_find_cols(): Use a linear search instead of the hash table.
The time complexity is affected, but this function is only invoked by
dict_index_add_to_cache(), and we only search the columns of a single
table (typically at most a few dozen) as opposed to all columns of all
tables.
dtype_t: Remove unused field "prec", which was supposed to be used for
the precision of decimal columns in stand-alone InnoDB.
dtype_get_prec(): Remove.
dtype_set(), dict_mem_table_add_col(): Remove parameter "prec".
dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len)
into bit-fields.
dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds.
dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields.
Replace the default clust_pos value ULINT_UNDEFINED with
REC_MAX_N_FIELDS and replace all references to clust_pos with calls to
the accessor function dict_col_get_clust_pos().
dict_field_t: Turn prefix_len and fixed_len into bit-fields.
dict_tree_t: Remove pad[64].
dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded,
cached, flags, stat_initialized, and autoinc_inited into bit-fields.
Remove does_not_fit_in_memory from non-debug builds.
dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols,
n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields.
dict_foreign_struct: Turn n_fields and type into bit-fields.
rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields.
Omit level unless #defined UNIV_SYNC_DEBUG.
Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED)
from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic.
dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED.
Remove unused dict_table_LRU_trim().
Remove unused 'trx' parameter from the functions dict_table_get_on_id_low,
dict_table_get and dict_table_get_and_increment_handle_count.
DB_ROW_ID", by refusing tables that use reserved column names.
Add dict_mem_table_free(), use it instead of duplicating the code everywhere.
Use already existing dict_mem_index_free().
Fix memory leaks in row_create_table_for_mysql() in rare corner cases.
the implementation would be challenging with ROW_FORMAT=COMPACT.
Remove the table types DICT_TABLE_CLUSTER_MEMBER and DICT_TABLE_CLUSTER and
all related tests and functions.
dict_table_t: Remove mix_id, mix_len, mix_id_len, mix_id_buf, and
cluster_name.
plan_t: Remove mixed_index.
dict_create_sys_tables_tuple(): Set MIX_ID=0, MIX_LEN=0 and CLUSTER_NAME=NULL
when inserting into SYS_TABLES.
dict_tree_check_search_tuple(): Enclose in #ifdef UNIV_DEBUG.
which can contain the new flag DICT_TF_COMPACT. Change dict_mem_table_create
to take a flags argument. Add dict_table_is_comp(). Adapt all users.
Change some places to explicitly assume that system tables do not use the
compact page format.
