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

  • Committer: Brian Aker
  • Date: 2010-10-13 02:49:48 UTC
  • mto: This revision was merged to the branch mainline in revision 1853.
  • Revision ID: brian@tangent.org-20101013024948-xwel5qe6z7j21w73
Cleans up namespace for locks (now per user).

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plugin/innobase/usr/usr0sess.c
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/*****************************************************************************
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Copyright (C) 1996, 2009, Innobase Oy. All Rights Reserved.
 
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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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#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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        ut_ad(mutex_own(&kernel_mutex));
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        sess = static_cast<sess_t *>(mem_alloc(sizeof(sess_t)));
 
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        sess = mem_alloc(sizeof(sess_t));
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        sess->state = SESS_ACTIVE;
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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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{
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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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@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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}