Change mach_read_int_type() to return an integer type (ullint) instead
of array of bytes that later needs to be converted to an appropriate
integer type.
Approved by: Sunny
log_block_calc_checksum(), log_block_get_checksum(): Add const qualifiers.
log_block_calc_checksum(): Split a long expression to more readable chunks.
Some compilers might optimize this better.
srv_print_thread_releases, srv_print_lock_waits, srv_print_buf_io,
srv_print_log_io, srv_print_latch_waits: Define these variables as
constants (FALSE), unless UNIV_DEBUG is defined. These variables
are never assigned to, and they are initialized to FALSE. It could
be useful to set them when debugging InnoDB.
srv_slot_t: Fuse the fields type, in_use, suspended to a single machine word.
srv_meter[], srv_meter_low_water[], srv_meter_high_water[],
srv_meter_high_water2[], srv_meter_foreground[]: Enclose these arrays
inside #if 0. The arrays are essentially constants that do not affect
the control flow.
enum srv_thread_type: New enum, to replace the #defines SRV_COM, ...
Enclose the unused values SRV_BUFFER, SRV_RECOVERY, SRV_INSERT
inside #if 0, so that some arrays and loops can be reduced.
row_upd_rec_in_place(): Correct a debug assertion.
row_upd_index_parse(): Initialize new_val with dfield_set_data() or
dfield_set_null(). This ensures that new_val->ext is initialized.
value of the block that the cursor points to.
row_ins_check_foreign_constraint(): Call btr_pcur_get_block() after
row_ins_foreign_check_on_constraint(), as it may reposition the cursor
on a different page.
row_ins_scan_sec_index_for_duplicate(): Call btr_pcur_get_block() on
every iteration of the loop. Use do ... while instead of for (;;).
enum trx_dict_op: dictionary operation modes
trx_get_dict_operation(), trx_set_dict_operation(): Accessors for
trx->dict_operation.
lock_table_enqueue_waiting(), lock_rec_enqueue_waiting(): Do not complain
about lock waits if the dictionary mode is TRX_DICT_OP_INDEX_MAY_WAIT.
row_merge_lock_table(): Remove the work-around for avoiding the warning
in lock_table_enqueue_waiting().
trx_undo_mark_as_dict_operation(): Do not write trx->table_id to the
undo log unless the dict_operation is TRX_DICT_OP_TABLE.
ha_innobase::add_index(): Set the dict_operation mode initially to
TRX_DICT_OP_INDEX_MAY_WAIT, then lock the table exclusively, and set the
mode to TRX_DICT_OP_INDEX, and optionally to TRX_DICT_OP_TABLE when
creating a temporary table.
page_cur_set_before_first(), page_cur_set_after_last(),
page_cur_position(): Add const qualifiers to buf_block_t and rec.
A better solution would be to define a const_page_cur_t and a
set of accessors, but it would lead to severe code duplication.
page_rec_get_n_recs_before(): Add const qualifiers.
page_dir_get_nth_slot(): Define as a const-preserving macro.
page_dir_slot_get_rec(), page_dir_slot_get_n_owned(),
page_dir_find_owner_slot(), page_check_dir(): Add const qualifiers.
page_rec_get_next_low(): Add const qualifiers.
page_rec_get_next_const(), page_rec_get_prev_const(): New functions,
based on the const-less page_rec_get_next() and page_rec_get_prev().
page_cur_get_page(), page_cur_get_block(), page_cur_get_page_zip(),
page_cur_get_rec(): Define as const-preserving macros.
page_cur_try_search_shortcut(), page_cur_search_with_match():
Add const qualifiers.
buf_page_get_mutex(): Add a const qualifier to buf_page_t*.
rec_get_next_ptr_const(): Const variant of rec_get_next_ptr().
The size of the buffer pool can be one page smaller than the requested
size when os_mem_alloc_large() returns something that is not
aligned by UNIV_PAGE_SIZE. This test may still fail on systems with
a big os_large_page_size.
fix the bugs introduced in r1591.
row_rec_to_index_entry_low(): Clear "n_ext". Do not allow it to be NULL.
Add const qualifier to dict_index_t*.
row_rec_to_index_entry(): Add the parameters "offsets" and "n_ext".
btr_cur_optimistic_update(): Add an assertion that there are no externally
stored columns. Remove the unreachable call to btr_cur_unmark_extern_fields()
and the preceding unnecessary call to rec_get_offsets().
btr_push_update_extern_fields(): Remove the parameters index, offsets.
Only report the additional externally stored columns of the update vector.
row_build(), trx_undo_rec_get_partial_row(): Flag externally stored columns
also with dfield_set_ext().
rec_copy_prefix_to_dtuple(): Assert that there are no externally stored
columns in the prefix.
row_build_row_ref(): Note and assert that the index is a secondary index,
and assert that there are no externally stored columns.
row_build_row_ref_fast(): Assert that there are no externally stored columns.
rec_offs_get_n_alloc(): Expose the function.
row_build_row_ref_in_tuple(): Assert that there are no externally stored
columns in a record of a secondary index.
row_build_row_ref_from_row(): Assert that there are no externally stored
columns.
row_upd_check_references_constraints(): Add the parameter offsets, to
avoid a redundant call to rec_get_offsets().
row_upd_del_mark_clust_rec(): Add the parameter offsets. Remove
duplicated code.
row_ins_index_entry_set_vals(): Copy the external storage flag.
sel_pop_prefetched_row(): Assert that there are no externally stored
columns.
row_scan_and_check_index(): Copy offsets to a temporary heap across
the invocation of row_rec_to_index_entry().
and use it for flagging externally stored columns in the data tuple.
The data tuple contains the same columns as the clustered index record,
but in a different order. This error was introduced in r1591.
TODO: the assertion ut_ad(!dfield_is_ext()) may fail in
btr_cur_pessimistic_update().
to replace a built-in instance of InnoDB in mysqld. This is work in
progress, with several limitations:
* Other plugins defined in the builtin InnoDB are not disabled.
However, InnoDB in MySQL 5.1 only defines the storage engine plugin,
no INFORMATION_SCHEMA plugins.
* The global C symbols in ha_innodb.so except innodb_hton_ptr and
builtin_innobase_plugin will have to be redefined, e.g., by objcopy.
* The storage engine cannot be called "InnoDB" to avoid a conflict with
the builtin name. Here we call it InnoDBzip.
innobase_hton_name[]: Rename to "InnoDBzip" when building a dynamic plugin.
innodb_plugin_init(): New function for the dynamic plugin, to copy
and redirect configuration parameters from the builtin InnoDB.
innodb_dynamic: New configuration parameter. This has to be added
to the builtin InnoDB in MySQL 5.1. Also, innodb_hton_ptr must be made
global there.
innobase_init(): Interpret the parameter innodb_dynamic.
Makefile.am: Redefine class ha_innobase to ha_innodb by a preprocessor
define. Apparently, C++ classes cannot be easily renamed by objcopy.
Do not assume anything about the contents of the bitmap.
ibuf_update_free_bits_low(): Use this function only for uncompressed pages.
Remove the parameter zip_size. This function avoids latching the bitmap page
and updating the bitmap when the bits do not change.
ibuf_update_free_bits_zip(): New function based on ibuf_update_free_bits_low(),
for use on compressed pages. Remove the parameter max_insert_size that
was used for computing the before image of the free bits. Always update the
bitmap.
ibuf_index_page_calc_free_zip(): New function, factored out from
ibuf_index_page_calc_free().
ibuf_update_free_bits_if_full(): Document that this function must only be
invoked on uncompressed pages. Add a debug assertion about this.
Unfortunately, the patch seems to prevent MySQL from utilizing secondary
indexes in the ORDER BY clauses. Thus, the test no longer checks if newly
created indexes are well-formed.
ChangeSet@1.2528.98.1 2007-08-02 12:45:56-07:00 igor@mysql.com
Fixed bug#28404.
This patch adds cost estimation for the queries with ORDER BY / GROUP BY
and LIMIT.
If there was a ref/range access to the table whose rows were required
to be ordered in the result set the optimizer always employed this access
though a scan by a different index that was compatible with the required
order could be cheaper to produce the first L rows of the result set.
Now for such queries the optimizer makes a choice between the cheapest
ref/range accesses not compatible with the given order and index scans
compatible with it.
