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

[patch 106/129] Merge patch for revision 1915 from InnoDB SVN:
revno: 1915
revision-id: svn-v4:16c675df-0fcb-4bc9-8058-dcc011a37293:branches/zip:6130
parent: svn-v4:16c675df-0fcb-4bc9-8058-dcc011a37293:branches/zip:6126
committer: marko
timestamp: Mon 2009-11-02 09:42:56 +0000
message:
  branches/zip: Free all resources at shutdown. Set pointers to NULL, so
  that Valgrind will not complain about freed data structures that are
  reachable via pointers.  This addresses Bug #45992 and Bug #46656.
  
  This patch is mostly based on changes copied from branches/embedded-1.0,
  mainly c5432, c3439, c3134, c2994, c2978, but also some other code was
  copied.  Some added cleanup code is specific to MySQL/InnoDB.
  
  rb://199 approved by Sunny Bains
modified:
  ChangeLog                      2425@16c675df-0fcb-4bc9-8058-dcc011a37293:branches%2Fzip%2FChangeLog
  btr/btr0sea.c                  2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fbtr%2Fbtr0sea.c
  buf/buf0buf.c                  2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fbuf%2Fbuf0buf.c
  dict/dict0dict.c               2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fdict%2Fdict0dict.c
  fil/fil0fil.c                  2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Ffil%2Ffil0fil.c
  ibuf/ibuf0ibuf.c               2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fibuf%2Fibuf0ibuf.c
  include/btr0sea.h              2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Finclude%2Fbtr0sea.h
  include/dict0dict.h            2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Finclude%2Fdict0dict.h
  include/fil0fil.h              2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Finclude%2Ffil0fil.h
  include/ibuf0ibuf.h            2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Finclude%2Fibuf0ibuf.h
  include/lock0lock.h            2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Finclude%2Flock0lock.h
  include/log0log.h              2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Finclude%2Flog0log.h
  include/log0recv.h             2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Finclude%2Flog0recv.h
  include/mem0mem.h              2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Finclude%2Fmem0mem.h
  include/mem0pool.h             2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Finclude%2Fmem0pool.h
  include/os0file.h              2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Finclude%2Fos0file.h
  include/pars0pars.h            2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Finclude%2Fpars0pars.h
  include/srv0srv.h              2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Finclude%2Fsrv0srv.h
  include/thr0loc.h              2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Finclude%2Fthr0loc.h
  include/trx0i_s.h              1864@16c675df-0fcb-4bc9-8058-dcc011a37293:branches%2Fzip%2Finclude%2Ftrx0i_s.h
  include/trx0purge.h            2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Finclude%2Ftrx0purge.h
  include/trx0rseg.h             2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Finclude%2Ftrx0rseg.h
  include/trx0sys.h              2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Finclude%2Ftrx0sys.h
  include/trx0undo.h             2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Finclude%2Ftrx0undo.h
  include/usr0sess.h             2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Finclude%2Fusr0sess.h
  lock/lock0lock.c               2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Flock%2Flock0lock.c
  log/log0log.c                  2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Flog%2Flog0log.c
  log/log0recv.c                 2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Flog%2Flog0recv.c
  mem/mem0dbg.c                  2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fmem%2Fmem0dbg.c
  mem/mem0pool.c                 2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fmem%2Fmem0pool.c
  os/os0file.c                   2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fos%2Fos0file.c
  os/os0sync.c                   2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fos%2Fos0sync.c
  os/os0thread.c                 2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fos%2Fos0thread.c
  pars/lexyy.c                   2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fpars%2Flexyy.c
  pars/pars0lex.l                2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fpars%2Fpars0lex.l
  que/que0que.c                  2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fque%2Fque0que.c
  srv/srv0srv.c                  2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fsrv%2Fsrv0srv.c
  srv/srv0start.c                2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fsrv%2Fsrv0start.c
  sync/sync0arr.c                2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fsync%2Fsync0arr.c
  sync/sync0sync.c               2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fsync%2Fsync0sync.c
  thr/thr0loc.c                  2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fthr%2Fthr0loc.c
  trx/trx0i_s.c                  1864@16c675df-0fcb-4bc9-8058-dcc011a37293:branches%2Fzip%2Ftrx%2Ftrx0i_s.c
  trx/trx0purge.c                2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Ftrx%2Ftrx0purge.c
  trx/trx0rseg.c                 2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Ftrx%2Ftrx0rseg.c
  trx/trx0sys.c                  2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Ftrx%2Ftrx0sys.c
  trx/trx0undo.c                 2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Ftrx%2Ftrx0undo.c
  usr/usr0sess.c                 2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fusr%2Fusr0sess.c
  ut/ut0mem.c                    2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fut%2Fut0mem.c
diff:
=== modified file 'ChangeLog'

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added added

removed removed

Lines of Context:
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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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/*********************************************************************//**
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Closes a session, freeing the memory occupied by it. */
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static
 
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UNIV_INTERN
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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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        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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        mem_free(sess);
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}
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/*********************************************************************//**
80
 
Closes a session, freeing the memory occupied by it, if it is in a state
81
 
where it should be closed.
82
 
@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 */
88
 
{
89
 
        ut_ad(mutex_own(&kernel_mutex));
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91
 
        if (UT_LIST_GET_LEN(sess->graphs) == 0) {
92
 
                sess_close(sess);
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                return(TRUE);
95
 
        }
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        return(FALSE);
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}