transactions that are started before the rollback of incomplete
transactions has finished may have an inconsistent view of the
secondary indexes.
dict_index_is_sec_or_ibuf(): Auxiliary function for controlling
updates and checks of PAGE_MAX_TRX_ID: check whether an index is a
secondary index or the insert buffer tree.
page_set_max_trx_id(), page_update_max_trx_id(),
lock_rec_insert_check_and_lock(),
lock_sec_rec_modify_check_and_lock(), btr_cur_ins_lock_and_undo(),
btr_cur_upd_lock_and_undo(): Add the parameter mtr.
page_set_max_trx_id(): Allow mtr to be NULL. When mtr==NULL, do not
attempt to write to the redo log. This only occurs when creating a
page or reorganizing a compressed page. In these cases, the
PAGE_MAX_TRX_ID will be set correctly during the application of redo
log records, even though there is no explicit log record about it.
btr_discard_only_page_on_level(): Preserve PAGE_MAX_TRX_ID. This
function should be unreachable, though.
btr_cur_pessimistic_update(): Update PAGE_MAX_TRX_ID.
Add some assertions for checking that PAGE_MAX_TRX_ID is set on all
secondary index leaf pages.
rb://115 tested by Michael, fixes Issue #211
correctly estimate the free space on the compressed page by
page_zip_available(..., create=TRUE). This was reported as Issue #231.
btr_cur_update_alloc_zip(): Add the parameter ibool create and pass it
to page_zip_available(). The parameter was previously passed as 0.
btr_cur_optimistic_update(): Pass create=TRUE to btr_cur_update_alloc_zip().
rb://120 approved by Heikki Tuuri
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r4994 | marko | 2009-05-14 15:04:55 +0300 (Thu, 14 May 2009) | 18 lines
branches/5.1: Prevent a race condition in innobase_commit() by ensuring
that innodb_commit_concurrency>0 remains constant at run time. (Bug #42101)
srv_commit_concurrency: Make this a static variable in ha_innodb.cc.
innobase_commit_concurrency_validate(): Check that innodb_commit_concurrency
is not changed from or to 0 at run time. This is needed, because
innobase_commit() assumes that innodb_commit_concurrency>0 remains constant.
Without this limitation, the checks for innodb_commit_concurrency>0
in innobase_commit() should be removed and that function would have to
acquire and release commit_cond_m at least twice per invocation.
Normally, innodb_commit_concurrency=0, and introducing the mutex operations
would mean significant overhead.
innodb_bug42101.test, innodb_bug42101-nonzero.test: Test cases.
rb://123 approved by Heikki Tuuri
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------------------------------------------------------------------------
r4976 | marko | 2009-05-13 15:44:54 +0300 (Wed, 13 May 2009) | 6 lines
branches/5.1: Display DB_ROLL_PTR in the COLUMNS section of the
innodb_table_monitor output. It was accidentally omitted due to an
off-by-one loop condition. (Bug #44320)
rb://116 approved by Heikki Tuuri
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This addresses Mantis Issue #23 in InnoDB Hot Backup and some
of MySQL Bug #41609.
In MLOG_FILE_CREATE, we need to distinguish temporary tables, so that
InnoDB Hot Backup can work correctly. It turns out that we can do this
easily, by using a bit of the previously unused parameter for page number.
(The page number parameter of MLOG_FILE_CREATE has been written as 0
ever since MySQL 4.1, which introduced MLOG_FILE_CREATE.)
MLOG_FILE_FLAG_TEMP: A flag for indicating a temporary table in
the page number parameter of MLOG_FILE_ operations.
fil_op_write_log(): Add the parameter log_flags.
fil_op_log_parse_or_replay(): Add the parameter log_flags.
Do not replay MLOG_FILE_CREATE when MLOG_FILE_FLAG_TEMP is set in log_flags.
This only affects ibbackup --apply-log. InnoDB itself never replays file
operations.
rb://117 approved by Heikki Tuuri
and undo_no_t. Each type is still defined as dulint.
This is an initial step towards replacing dulint with a 64-bit data type.
Because modern compilers have no trouble supporting 64-bit arithmetics
even on 32-bit targets, the dulint struct is a relic that should go.
The last remaining major use of dulint is dictionary IDs
(table, index, and row ids).
rb://114 approved by Sunny Bains
All are non-functional changes:
- should check for long (not int), spotted by Sunny
- comment out the project definition, avoiding to generate another
.sln file.
access
Mapping the atomic operations to Windows Interlocked functions:
os_compare_and_swap_* to InterlockedCompareExchange(64)
os_atomic_increment_* to InterlockedExchangeAdd(64)
os_atomic_test_and_set_byte to InterlockedExchange
In this patch, the legacy code under UNIV_CAN_USE_X86_ASSEMBLER is
removed all together, and add HAVE_WINDOWS_ATOMICS and
INNODB_RW_LOCKS_USE_ATOMICS to CMakeLists.txt
This is to address mantis issue#194.
rb://113
Approved by: Marko
