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/*****************************************************************************
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/usr0sess.h
Sessions
Created 6/25/1996 Heikki Tuuri
*******************************************************/
#ifndef usr0sess_h
#define usr0sess_h
#include "univ.i"
#include "ut0byte.h"
#include "trx0types.h"
#include "srv0srv.h"
#include "trx0types.h"
#include "usr0types.h"
#include "que0types.h"
#include "data0data.h"
#include "rem0rec.h"
/*********************************************************************//**
Opens a session.
@return own: session object */
UNIV_INTERN
sess_t*
sess_open(void);
/*============*/
/*********************************************************************//**
Closes a session, freeing the memory occupied by it. */
UNIV_INTERN
void
sess_close(
/*=======*/
sess_t* sess); /* in, own: session object */
/* The session handle. All fields are protected by the kernel mutex */
struct sess_struct{
ulint state; /*!< state of the session */
trx_t* trx; /*!< transaction object permanently
assigned for the session: the
transaction instance designated by the
trx id changes, but the memory
structure is preserved */
UT_LIST_BASE_NODE_T(que_t)
graphs; /*!< query graphs belonging to this
session */
};
/* Session states */
#define SESS_ACTIVE 1
#define SESS_ERROR 2 /* session contains an error message
which has not yet been communicated
to the client */
#ifndef UNIV_NONINL
#include "usr0sess.ic"
#endif
#endif
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