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2c2b06ad75
symbols. Use it for all definitions of non-static variables and functions. lexyy.c, make_flex.sh: Declare yylex as UNIV_INTERN, not static. It is referenced from pars0grm.c. Actually, according to nm .libs/ha_innodb.so|grep -w '[ABCE-TVXYZ]' the following symbols are still global: * The vtable for class ha_innodb * pars0grm.c: The function yyparse() and the variables yychar, yylval, yynerrs The required changes to the Bison-generated file pars0grm.c will be addressed in a separate commit, which will add a script similar to make_flex.sh. The class ha_innodb is renamed from class ha_innobase by a #define. Thus, there will be no clash with the builtin InnoDB. However, there will be some overhead for invoking virtual methods of class ha_innodb. Ideas for making the vtable hidden are welcome. -fvisibility=hidden is not available in GCC 3.
81 lines
1.6 KiB
C
81 lines
1.6 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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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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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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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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}
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