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BitKeeper/deleted/.del-srv0que.c~d1feebb77b5a9b96: Exclude BitKeeper/deleted/.del-srv0que.h~f12ecb4b5afe203e: Exclude innobase/include/que0que.h: Exclude innobase/include/trx0roll.h: Exclude innobase/include/trx0trx.h: Exclude innobase/include/usr0sess.h: Exclude innobase/que/que0que.c: Exclude innobase/srv/Makefile.am: Exclude innobase/include/Makefile.am: Exclude innobase/srv/srv0srv.c: Exclude innobase/trx/trx0purge.c: Exclude innobase/trx/trx0roll.c: Exclude innobase/trx/trx0trx.c: Exclude innobase/usr/usr0sess.c: Exclude
86 lines
1.7 KiB
C
86 lines
1.7 KiB
C
/******************************************************
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Sessions
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(c) 1996 Innobase Oy
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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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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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#ifdef UNIV_SYNC_DEBUG
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ut_ad(mutex_own(&kernel_mutex));
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#endif /* UNIV_SYNC_DEBUG */
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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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#ifdef UNIV_SYNC_DEBUG
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ut_ad(mutex_own(&kernel_mutex));
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#endif /* UNIV_SYNC_DEBUG */
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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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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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#ifdef UNIV_SYNC_DEBUG
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ut_ad(mutex_own(&kernel_mutex));
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#endif /* UNIV_SYNC_DEBUG */
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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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