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Applying InnoDB Plugin 1.0.6 snapshot,part 1. Fixes BUG#45992 and BUG#46656

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Detailed revision comments:

r6130 | marko | 2009-11-02 11:42:56 +0200 (Mon, 02 Nov 2009) | 9 lines
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
This commit is contained in:
Satya B
2009-11-30 17:02:05 +05:30
parent cefd968ddd
commit a1092e9b66
48 changed files with 1003 additions and 159 deletions
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37
storage/innodb_plugin/usr/usr0sess.c
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@@ -31,14 +31,6 @@ Created 6/25/1996 Heikki Tuuri
#include "trx0trx.h"
/*********************************************************************//**
Closes a session, freeing the memory occupied by it. */
static
void
sess_close(
/*=======*/
sess_t* sess); /*!< in, own: session object */
/*********************************************************************//**
Opens a session.
@return own: session object */
@@ -64,35 +56,16 @@ sess_open(void)
/*********************************************************************//**
Closes a session, freeing the memory occupied by it. */
static
UNIV_INTERN
void
sess_close(
/*=======*/
sess_t* sess) /*!< in, own: session object */
{
ut_ad(mutex_own(&kernel_mutex));
ut_ad(sess->trx == NULL);
ut_ad(!mutex_own(&kernel_mutex));
ut_a(UT_LIST_GET_LEN(sess->graphs) == 0);
trx_free_for_background(sess->trx);
mem_free(sess);
}
/*********************************************************************//**
Closes a session, freeing the memory occupied by it, if it is in a state
where it should be closed.
@return TRUE if closed */
UNIV_INTERN
ibool
sess_try_close(
/*===========*/
sess_t* sess) /*!< in, own: session object */
{
ut_ad(mutex_own(&kernel_mutex));
if (UT_LIST_GET_LEN(sess->graphs) == 0) {
sess_close(sess);
return(TRUE);
}
return(FALSE);
}