Add innodb_locks.lock_data column and some relevant tests.
For record locks this column represents the ordering fields of the
locked row in a human readable, SQL-valid, format.

Approved by:	Marko

on mispredicted branches: opcontrol --event=BR_CND_MISSP_EXEC:45000

UT_SORT_FUNCTION_BODY(): Copy the array with memcpy(3).

cmp_dtuple_rec_with_match(), cmp_rec_rec_with_match(),
cmp_debug_dtuple_rec_with_match(): Add UNIV_UNLIKELY hints around
tests for REC_INFO_MIN_REC_FLAG.

to the time in which modern disks can serve a random disk read.

wait_until_unfixed.

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

 
Make lock_get_type_str() to also indicate if it is a gap lock.
 
Suggested by:	Heikki
Approved by:	Marko

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.

dfield_dup(): New function for duplicating the data pointed to by dfield_t.

dfield_set_len(), dfield_set_data(): Add Valgrind instrumentation.

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 (;;).

btr_pcur_get_rel_pos(): Add a const qualifier.

btr_pcur_get_btr_cur(), btr_pcur_get_page_cur(): btr_cur_get_page_cur():
Define as const-preserving macros.

btr_pcur_is_on_user_rec(), btr_pcur_is_after_last_on_page(),
btr_pcur_is_before_first_on_page(): Remove the unused parameter mtr.
Add a const qualifier.

btr_pcur_move_to_next_on_page(), btr_pcur_move_to_prev_on_page():
Remove the unused parameter mtr.

page_cur_search(): Add const qualifiers.

page_cur_get_page(), page_cur_is_before_first(), page_cur_is_after_last():
Add debug assertions.

TRX_DICT_OP_TABLE to TRX_DICT_OP_TABLE.

the assertion in trx_set_dict_operation() would read uninitialized data.
This mistake was made in r1998.

the data dictionary cache, do not create the index tree.

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.

hold an X-latch to the data dictionary, to avoid an assertion failure
when a lock wait occurs in row_merge_lock_table().

any indexes.  Before this fix, other transactions could see the empty indexes
before we acquired the table lock.

for the duration of the lock_table() call in order to avoid a bogus warning.

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 typo in comment.

that tmp_heap is possibly uninitialized.  This was introduced in r1990.

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().

that was broken in r1591.  Spotted by Heikki and Vasil.

never used.  Combine the three AC_CHECK_FUNCS tests.

return the requested amount of memory.

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.

those SELECTs whose ORDER BY cannot possibly make use of an index.