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/*****************************************************************************
Copyright (c) 1997, 2012, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 2010-2012, Percona Inc. 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 Street, Suite 500, Boston, MA 02110-1335 USA
*****************************************************************************/
#ifndef read0i_s_h
#define read0i_s_h
#include <trx0types.h>
struct i_s_xtradb_read_view_struct {
undo_no_t undo_no;/*!< 0 or if type is
VIEW_HIGH_GRANULARITY
transaction undo_no when this high-granularity
consistent read view was created */
trx_id_t low_limit_no;
/*!< The view does not need to see the undo
logs for transactions whose transaction number
is strictly smaller (<) than this value: they
can be removed in purge if not needed by other
views */
trx_id_t low_limit_id;
/*!< The read should not see any transaction
with trx id >= this value. In other words,
this is the "high water mark". */
trx_id_t up_limit_id;
/*!< The read should see all trx ids which
are strictly smaller (<) than this value.
In other words,
this is the "low water mark". */
};
typedef struct i_s_xtradb_read_view_struct i_s_xtradb_read_view_t;
UNIV_INTERN
i_s_xtradb_read_view_t*
read_fill_i_s_xtradb_read_view(i_s_xtradb_read_view_t *rv);
#endif /* read0i_s_h */
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