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/* Copyright (C) 2006 MySQL AB
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifndef _trnman_h
#define _trnman_h
C_MODE_START
#include <lf.h>
#include "lockman.h"
#include "trnman_public.h"
#include "ma_loghandler_lsn.h"
/*
trid - 6 byte transaction identifier. Assigned when a transaction
is created. Transaction can always be identified by its trid,
even after transaction has ended.
short_trid - 2-byte transaction identifier, identifies a running
transaction, is reassigned when transaction ends.
*/
/*
short transaction id is at the same time its identifier
for a lock manager - its lock owner identifier (loid)
*/
#define short_id locks.loid
struct st_transaction
{
LOCK_OWNER locks; /* must be the first! see short_trid_to_TRN() */
LF_PINS *pins;
TrID trid, min_read_from, commit_trid;
TRN *next, *prev;
LSN rec_lsn, undo_lsn;
LSN_WITH_FLAGS first_undo_lsn;
uint locked_tables;
/* Note! if locks.loid is 0, trn is NOT initialized */
};
#define TRANSACTION_LOGGED_LONG_ID ULL(0x8000000000000000)
C_MODE_END
#endif
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