mariadb/storage/xtradb/include/trx0roll.ic
2015-04-27 23:37:51 +02:00

40 lines
1.4 KiB
Text

/*****************************************************************************
Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved.
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*****************************************************************************/
/**************************************************//**
@file include/trx0roll.ic
Transaction rollback
Created 3/26/1996 Heikki Tuuri
*******************************************************/
/*******************************************************************//**
Returns pointer to nth element in an undo number array.
@return pointer to the nth element */
UNIV_INLINE
trx_undo_inf_t*
trx_undo_arr_get_nth_info(
/*======================*/
trx_undo_arr_t* arr, /*!< in: undo number array */
ulint n) /*!< in: position */
{
ut_ad(arr);
ut_ad(n < arr->n_cells);
return(arr->infos + n);
}