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99 lines
2.4 KiB
C
99 lines
2.4 KiB
C
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/*****************************************************************************
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Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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*****************************************************************************/
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/**************************************************//**
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@file usr/usr0sess.c
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Sessions
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Created 6/25/1996 Heikki Tuuri
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*******************************************************/
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#include "usr0sess.h"
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#ifdef UNIV_NONINL
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#include "usr0sess.ic"
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#endif
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#include "trx0trx.h"
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/*********************************************************************//**
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Closes a session, freeing the memory occupied by it. */
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static
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void
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sess_close(
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/*=======*/
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sess_t* sess); /*!< in, own: session object */
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/*********************************************************************//**
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Opens a session.
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@return own: session object */
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UNIV_INTERN
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sess_t*
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sess_open(void)
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/*===========*/
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{
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sess_t* sess;
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ut_ad(mutex_own(&kernel_mutex));
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sess = mem_alloc(sizeof(sess_t));
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sess->state = SESS_ACTIVE;
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sess->trx = trx_create(sess);
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UT_LIST_INIT(sess->graphs);
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return(sess);
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}
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/*********************************************************************//**
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Closes a session, freeing the memory occupied by it. */
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static
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void
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sess_close(
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/*=======*/
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sess_t* sess) /*!< in, own: session object */
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{
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ut_ad(mutex_own(&kernel_mutex));
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ut_ad(sess->trx == NULL);
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mem_free(sess);
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}
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/*********************************************************************//**
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Closes a session, freeing the memory occupied by it, if it is in a state
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where it should be closed.
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@return TRUE if closed */
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UNIV_INTERN
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ibool
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sess_try_close(
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/*===========*/
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sess_t* sess) /*!< in, own: session object */
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{
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ut_ad(mutex_own(&kernel_mutex));
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if (UT_LIST_GET_LEN(sess->graphs) == 0) {
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sess_close(sess);
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return(TRUE);
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}
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return(FALSE);
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}
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