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Viewing changes to storage/innobase/usr/usr0sess.c

  • Committer: Monty Taylor
  • Date: 2009-03-22 07:55:08 UTC
  • mto: (960.5.2 mordred)
  • mto: This revision was merged to the branch mainline in revision 961.
  • Revision ID: mordred@inaugust.com-20090322075508-1h34cksq2knhaxc3
Removed global.h from a header.

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storage/innobase/usr/usr0sess.c
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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., 51 Franklin
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St, Fifth Floor, Boston, MA 02110-1301 USA
 
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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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/******************************************************
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Sessions
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Created 6/25/1996 Heikki Tuuri
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#include "trx0trx.h"
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/*********************************************************************//**
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Opens a session.
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@return own: session object */
 
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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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UNIV_INTERN
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sess_t*
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sess_open(void)
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/*===========*/
 
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                                        /* out, own: session object */
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{
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        sess_t* sess;
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        return(sess);
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}
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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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UNIV_INTERN
 
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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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        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_a(UT_LIST_GET_LEN(sess->graphs) == 0);
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        trx_free_for_background(sess->trx);
 
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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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UNIV_INTERN
 
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ibool
 
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sess_try_close(
 
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/*===========*/
 
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                        /* out: TRUE if closed */
 
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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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}