mariadb/storage/innobase/include/btr0btr.h
unknown 050f14ac37 Applied innodb-5.1-ss269 snapshot.
Fixed BUGS:
  #3300: "UPDATE statement with no index column in where condition locks
    all rows"
    Implement semi-consistent read to reduce lock conflicts at the cost
    of breaking serializability.
    ha_innobase::unlock_row(): reset the "did semi consistent read" flag
    ha_innobase::was_semi_consistent_read(),
    ha_innobase::try_semi_consistent_read(): new methods
    row_prebuilt_t, row_create_prebuilt(): add field row_read_type for
    keeping track of semi-consistent reads
    row_vers_build_for_semi_consistent_read(),
    row_sel_build_committed_vers_for_mysql(): new functions
    row_search_for_mysql(): implement semi-consistent reads

  #9802: "Foreign key checks disallow alter table".
    Added test cases.

  #12456: "Cursor shows incorrect data - DML does not affect,
    probably caching"
    This patch implements a high-granularity read view to be used with
    cursors. In this high-granularity consistent read view modifications 
    done by the creating transaction after the cursor is created or 
   future transactions are not visible. But those modifications that 
   transaction did before the cursor was created are visible.

  #12701: "Support >4GB buffer pool and log files on 64-bit Windows"
    Do not call os_file_create_tmpfile() at runtime. Instead, create all
    tempfiles at startup and guard access to them with mutexes.

  #13778: "If FOREIGN_KEY_CHECKS=0, one can create inconsistent FOREIGN KEYs".
    When FOREIGN_KEY_CHECKS=0 we still need to check that datatypes between
    foreign key references are compatible.

  #14189: "VARBINARY and BINARY variables: trailing space ignored with InnoDB"
    innobase_init(): Assert that
    DATA_MYSQL_BINARY_CHARSET_COLL == my_charset_bin.number.
    dtype_get_pad_char(): Do not pad VARBINARY or BINARY columns.
    row_ins_cascade_calc_update_vec(): Refuse ON UPDATE CASCADE when trying
    to change the length of a VARBINARY column that refers to or is referenced
    by a BINARY column. BINARY columns are no longer padded on comparison,
    and thus they cannot be padded on storage either.

  #14747: "Race condition can cause btr_search_drop_page_hash_index() to crash"
    Note that buf_block_t::index should be protected by btr_search_latch
    or an s-latch or x-latch on the index page.
    btr_search_drop_page_hash_index(): Read block->index while holding
    btr_search_latch and use the cached value in the loop.  Remove some
    redundant assertions.

  #15108: "mysqld crashes when innodb_log_file_size is set > 4G"

  #15308: "Problem of Order with Enum Column in Primary Key"

  #15550: "mysqld crashes in printing a FOREIGN KEY error in InnoDB"
    row_ins_foreign_report_add_err(): When printing the parent record,
    use the index in the parent table rather than the index in the child table.

  #15653: "Slow inserts to InnoDB if many thousands of .ibd files"
    Keep track on unflushed modifications to file spaces.  When there are tens
    of thousands of file spaces, flushing all files in fil_flush_file_spaces()
    would be very slow.
    fil_flush_file_spaces(): Only flush unflushed file spaces.
    fil_space_t, fil_system_t: Add a list of unflushed spaces.

  #15991: "innodb-file-per-table + symlink database + rename = cr"
   os_file_handle_error(): Map the error codes EXDEV, ENOTDIR, and EISDIR
   to the new code OS_FILE_PATH_ERROR. Treat this code as OS_FILE_PATH_ERROR.
   This fixes the crash on RENAME TABLE when the .ibd file is a symbolic link
   to a different file system.

  #16157: "InnoDB crashes when main location settings are empty"
    This patch is from Heikki.

  #16298: "InnoDB segfaults in INSERTs in upgrade of 4.0 -> 5.0 tables
    with VARCHAR BINARY"
    dict_load_columns(): Set the charset-collation code
    DATA_MYSQL_BINARY_CHARSET_COLL for those binary string columns
    that lack a charset-collation code, i.e., the tables were created
    with an older version of MySQL/InnoDB than 4.1.2.

  #16229: "MySQL/InnoDB uses full explicit table locks in trigger processing"
    Take a InnoDB table lock only if user has explicitly requested a table
    lock. Added some additional comments to store_lock() and external_lock().

  #16387: "InnoDB crash when dropping a foreign key <table>_ibfk_0"
    Do not mistake TABLENAME_ibfk_0 for auto-generated id.
    dict_table_get_highest_foreign_id(): Ignore foreign constraint
    identifiers starting with the pattern TABLENAME_ibfk_0.

  #16582: "InnoDB: Error in an adaptive hash index pointer to page"
    Account for a race condition when dropping the adaptive hash index
    for a B-tree page.
    btr_search_drop_page_hash_index(): Retry the operation if a hash index
    with different parameters was built meanwhile.  Add diagnostics for the
    case that hash node pointers to the page remain.
    btr_search_info_update_hash(), btr_search_info_update_slow():
    Document the parameter "info" as in/out.

  #16814: "SHOW INNODB STATUS format error in LATEST FOREIGN KEY ERROR
    section"
    Add a missing newline to the LAST FOREIGN KEY ERROR section in SHOW
    INNODB STATUS output.
    dict_foreign_error_report(): Always print a newline after invoking
    dict_print_info_on_foreign_key_in_create_format().

  #16827: "Better InnoDB error message if ibdata files omitted from my.cnf"

  #17126: "CHECK TABLE on InnoDB causes a short hang during check of adaptive
    hash"
    CHECK TABLE blocking other queries, by releasing the btr_search_latch
    periodically during the adaptive hash table validation.

  #17405: "Valgrind: conditional jump or move depends on unititialised values"
    buf_block_init(): Reset magic_n, buf_fix_count and io_fix to avoid
    testing uninitialized variables.



mysql-test/r/innodb.result:
  Applied innodb-5.1-ss269 snapshot.
mysql-test/t/innodb.test:
  Applied innodb-5.1-ss269 snapshot.
sql/ha_innodb.cc:
  Applied innodb-5.1-ss269 snapshot.
sql/ha_innodb.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/btr/btr0btr.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/btr/btr0cur.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/btr/btr0pcur.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/btr/btr0sea.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/buf/buf0buf.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/buf/buf0flu.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/buf/buf0lru.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/buf/buf0rea.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/data/data0data.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/data/data0type.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/dict/dict0boot.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/dict/dict0crea.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/dict/dict0dict.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/dict/dict0load.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/dict/dict0mem.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/dyn/dyn0dyn.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/eval/eval0eval.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/eval/eval0proc.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/fil/fil0fil.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/fsp/fsp0fsp.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/fut/fut0lst.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/ha/ha0ha.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/ha/hash0hash.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/ibuf/ibuf0ibuf.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/btr0btr.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/btr0btr.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/btr0cur.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/btr0cur.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/btr0pcur.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/btr0pcur.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/btr0sea.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/btr0sea.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/btr0types.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/buf0buf.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/buf0buf.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/buf0flu.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/buf0flu.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/buf0lru.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/data0data.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/data0data.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/data0type.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/data0type.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/db0err.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/dict0boot.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/dict0boot.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/dict0crea.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/dict0dict.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/dict0dict.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/dict0load.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/dict0mem.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/dyn0dyn.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/dyn0dyn.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/eval0eval.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/eval0eval.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/eval0proc.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/eval0proc.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/fil0fil.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/fsp0fsp.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/fut0lst.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/ha0ha.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/hash0hash.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/hash0hash.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/ibuf0ibuf.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/ibuf0ibuf.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/lock0lock.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/lock0types.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/log0log.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/log0log.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/log0recv.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/mach0data.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/mach0data.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/mem0dbg.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/mem0dbg.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/mem0mem.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/mem0mem.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/mem0pool.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/mtr0log.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/mtr0mtr.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/mtr0mtr.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/os0file.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/os0proc.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/os0sync.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/os0sync.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/os0thread.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/page0cur.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/page0cur.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/page0page.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/page0page.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/page0types.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/pars0grm.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/pars0opt.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/pars0pars.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/pars0sym.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/pars0types.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/que0que.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/que0que.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/que0types.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/read0read.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/read0read.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/rem0cmp.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/rem0cmp.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/rem0rec.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/rem0rec.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/row0ins.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/row0mysql.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/row0purge.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/row0row.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/row0row.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/row0sel.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/row0sel.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/row0types.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/row0uins.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/row0umod.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/row0undo.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/row0upd.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/row0upd.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/row0vers.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/srv0srv.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/srv0start.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/sync0arr.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/sync0rw.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/sync0rw.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/sync0sync.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/sync0sync.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/trx0purge.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/trx0purge.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/trx0rec.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/trx0roll.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/trx0rseg.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/trx0rseg.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/trx0sys.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/trx0sys.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/trx0trx.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/trx0trx.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/trx0types.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/trx0undo.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/trx0undo.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/trx0xa.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/univ.i:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/usr0sess.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/usr0types.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/ut0byte.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/ut0byte.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/ut0dbg.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/ut0lst.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/ut0mem.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/ut0mem.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/ut0rnd.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/ut0rnd.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/ut0sort.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/ut0ut.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/include/ut0ut.ic:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/lock/lock0lock.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/log/log0log.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/log/log0recv.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/mach/mach0data.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/mem/mem0dbg.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/mem/mem0mem.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/mem/mem0pool.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/mtr/mtr0log.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/mtr/mtr0mtr.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/os/os0file.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/os/os0proc.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/os/os0sync.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/os/os0thread.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/page/page0cur.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/page/page0page.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/pars/lexyy.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/pars/pars0grm.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/pars/pars0grm.h:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/pars/pars0grm.y:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/pars/pars0lex.l:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/pars/pars0opt.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/pars/pars0pars.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/pars/pars0sym.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/que/que0que.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/read/read0read.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/rem/rem0cmp.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/rem/rem0rec.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/row/row0ins.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/row/row0mysql.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/row/row0purge.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/row/row0row.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/row/row0sel.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/row/row0uins.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/row/row0umod.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/row/row0undo.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/row/row0upd.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/row/row0vers.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/srv/srv0que.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/srv/srv0srv.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/srv/srv0start.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/sync/sync0arr.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/sync/sync0rw.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/sync/sync0sync.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/thr/thr0loc.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/trx/trx0purge.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/trx/trx0rec.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/trx/trx0roll.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/trx/trx0rseg.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/trx/trx0sys.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/trx/trx0trx.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/trx/trx0undo.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/usr/usr0sess.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/ut/ut0byte.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/ut/ut0dbg.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/ut/ut0mem.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/ut/ut0rnd.c:
  Applied innodb-5.1-ss269 snapshot.
storage/innobase/ut/ut0ut.c:
  Applied innodb-5.1-ss269 snapshot.
mysql-test/r/innodb_unsafe_binlog.result:
  New BitKeeper file ``mysql-test/r/innodb_unsafe_binlog.result''
mysql-test/t/innodb_unsafe_binlog-master.opt:
  New BitKeeper file ``mysql-test/t/innodb_unsafe_binlog-master.opt''
mysql-test/t/innodb_unsafe_binlog.test:
  New BitKeeper file ``mysql-test/t/innodb_unsafe_binlog.test''
storage/innobase/pars/make_bison.sh:
  New BitKeeper file ``storage/innobase/pars/make_bison.sh''
2006-03-10 19:22:21 +03:00

441 lines
15 KiB
C

/******************************************************
The B-tree
(c) 1994-1996 Innobase Oy
Created 6/2/1994 Heikki Tuuri
*******************************************************/
#ifndef btr0btr_h
#define btr0btr_h
#include "univ.i"
#include "dict0dict.h"
#include "data0data.h"
#include "page0cur.h"
#include "rem0rec.h"
#include "mtr0mtr.h"
#include "btr0types.h"
/* Maximum record size which can be stored on a page, without using the
special big record storage structure */
#define BTR_PAGE_MAX_REC_SIZE (UNIV_PAGE_SIZE / 2 - 200)
/* Latching modes for the search function (in btr0cur.*) */
#define BTR_SEARCH_LEAF RW_S_LATCH
#define BTR_MODIFY_LEAF RW_X_LATCH
#define BTR_NO_LATCHES RW_NO_LATCH
#define BTR_MODIFY_TREE 33
#define BTR_CONT_MODIFY_TREE 34
#define BTR_SEARCH_PREV 35
#define BTR_MODIFY_PREV 36
/* If this is ORed to the latch mode, it means that the search tuple will be
inserted to the index, at the searched position */
#define BTR_INSERT 512
/* This flag ORed to latch mode says that we do the search in query
optimization */
#define BTR_ESTIMATE 1024
/* This flag ORed to latch mode says that we can ignore possible
UNIQUE definition on secondary indexes when we decide if we can use the
insert buffer to speed up inserts */
#define BTR_IGNORE_SEC_UNIQUE 2048
/******************************************************************
Gets the root node of a tree and x-latches it. */
page_t*
btr_root_get(
/*=========*/
/* out: root page, x-latched */
dict_tree_t* tree, /* in: index tree */
mtr_t* mtr); /* in: mtr */
/******************************************************************
Gets a buffer page and declares its latching order level. */
UNIV_INLINE
page_t*
btr_page_get(
/*=========*/
ulint space, /* in: space id */
ulint page_no, /* in: page number */
ulint mode, /* in: latch mode */
mtr_t* mtr); /* in: mtr */
/******************************************************************
Gets the index id field of a page. */
UNIV_INLINE
dulint
btr_page_get_index_id(
/*==================*/
/* out: index id */
page_t* page); /* in: index page */
/************************************************************
Gets the node level field in an index page. */
UNIV_INLINE
ulint
btr_page_get_level_low(
/*===================*/
/* out: level, leaf level == 0 */
page_t* page); /* in: index page */
/************************************************************
Gets the node level field in an index page. */
UNIV_INLINE
ulint
btr_page_get_level(
/*===============*/
/* out: level, leaf level == 0 */
page_t* page, /* in: index page */
mtr_t* mtr); /* in: mini-transaction handle */
/************************************************************
Gets the next index page number. */
UNIV_INLINE
ulint
btr_page_get_next(
/*==============*/
/* out: next page number */
page_t* page, /* in: index page */
mtr_t* mtr); /* in: mini-transaction handle */
/************************************************************
Gets the previous index page number. */
UNIV_INLINE
ulint
btr_page_get_prev(
/*==============*/
/* out: prev page number */
page_t* page, /* in: index page */
mtr_t* mtr); /* in: mini-transaction handle */
/*****************************************************************
Gets pointer to the previous user record in the tree. It is assumed
that the caller has appropriate latches on the page and its neighbor. */
rec_t*
btr_get_prev_user_rec(
/*==================*/
/* out: previous user record, NULL if there is none */
rec_t* rec, /* in: record on leaf level */
mtr_t* mtr); /* in: mtr holding a latch on the page, and if
needed, also to the previous page */
/*****************************************************************
Gets pointer to the next user record in the tree. It is assumed
that the caller has appropriate latches on the page and its neighbor. */
rec_t*
btr_get_next_user_rec(
/*==================*/
/* out: next user record, NULL if there is none */
rec_t* rec, /* in: record on leaf level */
mtr_t* mtr); /* in: mtr holding a latch on the page, and if
needed, also to the next page */
/******************************************************************
Releases the latch on a leaf page and bufferunfixes it. */
UNIV_INLINE
void
btr_leaf_page_release(
/*==================*/
page_t* page, /* in: page */
ulint latch_mode, /* in: BTR_SEARCH_LEAF or BTR_MODIFY_LEAF */
mtr_t* mtr); /* in: mtr */
/******************************************************************
Gets the child node file address in a node pointer. */
UNIV_INLINE
ulint
btr_node_ptr_get_child_page_no(
/*===========================*/
/* out: child node address */
rec_t* rec, /* in: node pointer record */
const ulint* offsets);/* in: array returned by rec_get_offsets() */
/****************************************************************
Creates the root node for a new index tree. */
ulint
btr_create(
/*=======*/
/* out: page number of the created root, FIL_NULL if
did not succeed */
ulint type, /* in: type of the index */
ulint space, /* in: space where created */
dulint index_id,/* in: index id */
ulint comp, /* in: nonzero=compact page format */
mtr_t* mtr); /* in: mini-transaction handle */
/****************************************************************
Frees a B-tree except the root page, which MUST be freed after this
by calling btr_free_root. */
void
btr_free_but_not_root(
/*==================*/
ulint space, /* in: space where created */
ulint root_page_no); /* in: root page number */
/****************************************************************
Frees the B-tree root page. Other tree MUST already have been freed. */
void
btr_free_root(
/*==========*/
ulint space, /* in: space where created */
ulint root_page_no, /* in: root page number */
mtr_t* mtr); /* in: a mini-transaction which has already
been started */
/*****************************************************************
Makes tree one level higher by splitting the root, and inserts
the tuple. It is assumed that mtr contains an x-latch on the tree.
NOTE that the operation of this function must always succeed,
we cannot reverse it: therefore enough free disk space must be
guaranteed to be available before this function is called. */
rec_t*
btr_root_raise_and_insert(
/*======================*/
/* out: inserted record */
btr_cur_t* cursor, /* in: cursor at which to insert: must be
on the root page; when the function returns,
the cursor is positioned on the predecessor
of the inserted record */
dtuple_t* tuple, /* in: tuple to insert */
mtr_t* mtr); /* in: mtr */
/*****************************************************************
Reorganizes an index page. */
void
btr_page_reorganize(
/*================*/
page_t* page, /* in: page to be reorganized */
dict_index_t* index, /* in: record descriptor */
mtr_t* mtr); /* in: mtr */
/*****************************************************************
Decides if the page should be split at the convergence point of
inserts converging to left. */
ibool
btr_page_get_split_rec_to_left(
/*===========================*/
/* out: TRUE if split recommended */
btr_cur_t* cursor, /* in: cursor at which to insert */
rec_t** split_rec);/* out: if split recommended,
the first record on upper half page,
or NULL if tuple should be first */
/*****************************************************************
Decides if the page should be split at the convergence point of
inserts converging to right. */
ibool
btr_page_get_split_rec_to_right(
/*============================*/
/* out: TRUE if split recommended */
btr_cur_t* cursor, /* in: cursor at which to insert */
rec_t** split_rec);/* out: if split recommended,
the first record on upper half page,
or NULL if tuple should be first */
/*****************************************************************
Splits an index page to halves and inserts the tuple. It is assumed
that mtr holds an x-latch to the index tree. NOTE: the tree x-latch
is released within this function! NOTE that the operation of this
function must always succeed, we cannot reverse it: therefore
enough free disk space must be guaranteed to be available before
this function is called. */
rec_t*
btr_page_split_and_insert(
/*======================*/
/* out: inserted record; NOTE: the tree
x-latch is released! NOTE: 2 free disk
pages must be available! */
btr_cur_t* cursor, /* in: cursor at which to insert; when the
function returns, the cursor is positioned
on the predecessor of the inserted record */
dtuple_t* tuple, /* in: tuple to insert */
mtr_t* mtr); /* in: mtr */
/***********************************************************
Inserts a data tuple to a tree on a non-leaf level. It is assumed
that mtr holds an x-latch on the tree. */
void
btr_insert_on_non_leaf_level(
/*=========================*/
dict_tree_t* tree, /* in: tree */
ulint level, /* in: level, must be > 0 */
dtuple_t* tuple, /* in: the record to be inserted */
mtr_t* mtr); /* in: mtr */
/********************************************************************
Sets a record as the predefined minimum record. */
void
btr_set_min_rec_mark(
/*=================*/
rec_t* rec, /* in: record */
ulint comp, /* in: nonzero=compact page format */
mtr_t* mtr); /* in: mtr */
/*****************************************************************
Deletes on the upper level the node pointer to a page. */
void
btr_node_ptr_delete(
/*================*/
dict_tree_t* tree, /* in: index tree */
page_t* page, /* in: page whose node pointer is deleted */
mtr_t* mtr); /* in: mtr */
#ifdef UNIV_DEBUG
/****************************************************************
Checks that the node pointer to a page is appropriate. */
ibool
btr_check_node_ptr(
/*===============*/
/* out: TRUE */
dict_tree_t* tree, /* in: index tree */
page_t* page, /* in: index page */
mtr_t* mtr); /* in: mtr */
#endif /* UNIV_DEBUG */
/*****************************************************************
Tries to merge the page first to the left immediate brother if such a
brother exists, and the node pointers to the current page and to the
brother reside on the same page. If the left brother does not satisfy these
conditions, looks at the right brother. If the page is the only one on that
level lifts the records of the page to the father page, thus reducing the
tree height. It is assumed that mtr holds an x-latch on the tree and on the
page. If cursor is on the leaf level, mtr must also hold x-latches to
the brothers, if they exist. NOTE: it is assumed that the caller has reserved
enough free extents so that the compression will always succeed if done! */
void
btr_compress(
/*=========*/
btr_cur_t* cursor, /* in: cursor on the page to merge or lift;
the page must not be empty: in record delete
use btr_discard_page if the page would become
empty */
mtr_t* mtr); /* in: mtr */
/*****************************************************************
Discards a page from a B-tree. This is used to remove the last record from
a B-tree page: the whole page must be removed at the same time. This cannot
be used for the root page, which is allowed to be empty. */
void
btr_discard_page(
/*=============*/
btr_cur_t* cursor, /* in: cursor on the page to discard: not on
the root page */
mtr_t* mtr); /* in: mtr */
/********************************************************************
Parses the redo log record for setting an index record as the predefined
minimum record. */
byte*
btr_parse_set_min_rec_mark(
/*=======================*/
/* out: end of log record or NULL */
byte* ptr, /* in: buffer */
byte* end_ptr,/* in: buffer end */
ulint comp, /* in: nonzero=compact page format */
page_t* page, /* in: page or NULL */
mtr_t* mtr); /* in: mtr or NULL */
/***************************************************************
Parses a redo log record of reorganizing a page. */
byte*
btr_parse_page_reorganize(
/*======================*/
/* out: end of log record or NULL */
byte* ptr, /* in: buffer */
byte* end_ptr,/* in: buffer end */
dict_index_t* index, /* in: record descriptor */
page_t* page, /* in: page or NULL */
mtr_t* mtr); /* in: mtr or NULL */
/******************************************************************
Gets the number of pages in a B-tree. */
ulint
btr_get_size(
/*=========*/
/* out: number of pages */
dict_index_t* index, /* in: index */
ulint flag); /* in: BTR_N_LEAF_PAGES or BTR_TOTAL_SIZE */
/******************************************************************
Allocates a new file page to be used in an index tree. NOTE: we assume
that the caller has made the reservation for free extents! */
page_t*
btr_page_alloc(
/*===========*/
/* out: new allocated page, x-latched;
NULL if out of space */
dict_tree_t* tree, /* in: index tree */
ulint hint_page_no, /* in: hint of a good page */
byte file_direction, /* in: direction where a possible
page split is made */
ulint level, /* in: level where the page is placed
in the tree */
mtr_t* mtr); /* in: mtr */
/******************************************************************
Frees a file page used in an index tree. NOTE: cannot free field external
storage pages because the page must contain info on its level. */
void
btr_page_free(
/*==========*/
dict_tree_t* tree, /* in: index tree */
page_t* page, /* in: page to be freed, x-latched */
mtr_t* mtr); /* in: mtr */
/******************************************************************
Frees a file page used in an index tree. Can be used also to BLOB
external storage pages, because the page level 0 can be given as an
argument. */
void
btr_page_free_low(
/*==============*/
dict_tree_t* tree, /* in: index tree */
page_t* page, /* in: page to be freed, x-latched */
ulint level, /* in: page level */
mtr_t* mtr); /* in: mtr */
#ifdef UNIV_BTR_PRINT
/*****************************************************************
Prints size info of a B-tree. */
void
btr_print_size(
/*===========*/
dict_tree_t* tree); /* in: index tree */
/******************************************************************
Prints directories and other info of all nodes in the tree. */
void
btr_print_tree(
/*===========*/
dict_tree_t* tree, /* in: tree */
ulint width); /* in: print this many entries from start
and end */
#endif /* UNIV_BTR_PRINT */
/****************************************************************
Checks the size and number of fields in a record based on the definition of
the index. */
ibool
btr_index_rec_validate(
/*===================*/
/* out: TRUE if ok */
rec_t* rec, /* in: index record */
dict_index_t* index, /* in: index */
ibool dump_on_error); /* in: TRUE if the function
should print hex dump of record
and page on error */
/******************************************************************
Checks the consistency of an index tree. */
ibool
btr_validate_tree(
/*==============*/
/* out: TRUE if ok */
dict_tree_t* tree, /* in: tree */
trx_t* trx); /* in: transaction or NULL */
#define BTR_N_LEAF_PAGES 1
#define BTR_TOTAL_SIZE 2
#ifndef UNIV_NONINL
#include "btr0btr.ic"
#endif
#endif