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Creation of mysql-trunk = {summit + "Innodb plugin replacing the builtin"}:
bzr branch mysql-5.1-performance-version mysql-trunk # Summit cd mysql-trunk bzr merge mysql-5.1-innodb_plugin # which is 5.1 + Innodb plugin bzr rm innobase # remove the builtin Next step: build, test fixes.
This commit is contained in:
Guilhem Bichot
commit
b57e4dbd88
1102 changed files with 135661 additions and 71407 deletions
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|
@ -1,630 +0,0 @@
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|||
/******************************************************
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||||
The index tree persistent cursor
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||||
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||||
(c) 1996 Innobase Oy
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|
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Created 2/23/1996 Heikki Tuuri
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*******************************************************/
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||||
|
||||
|
||||
/*************************************************************
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||||
Gets the rel_pos field for a cursor whose position has been stored. */
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||||
UNIV_INLINE
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ulint
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||||
btr_pcur_get_rel_pos(
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||||
/*=================*/
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||||
/* out: BTR_PCUR_ON, ... */
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btr_pcur_t* cursor) /* in: persistent cursor */
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{
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ut_ad(cursor);
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ut_ad(cursor->old_rec);
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ut_ad(cursor->old_stored == BTR_PCUR_OLD_STORED);
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ut_ad(cursor->pos_state == BTR_PCUR_WAS_POSITIONED
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|| cursor->pos_state == BTR_PCUR_IS_POSITIONED);
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return(cursor->rel_pos);
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}
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||||
/*************************************************************
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||||
Sets the mtr field for a pcur. */
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UNIV_INLINE
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void
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btr_pcur_set_mtr(
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/*=============*/
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btr_pcur_t* cursor, /* in: persistent cursor */
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mtr_t* mtr) /* in, own: mtr */
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{
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ut_ad(cursor);
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cursor->mtr = mtr;
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}
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/*************************************************************
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Gets the mtr field for a pcur. */
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UNIV_INLINE
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mtr_t*
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btr_pcur_get_mtr(
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/*=============*/
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/* out: mtr */
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btr_pcur_t* cursor) /* in: persistent cursor */
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{
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ut_ad(cursor);
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return(cursor->mtr);
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}
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/*************************************************************
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Returns the btr cursor component of a persistent cursor. */
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UNIV_INLINE
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btr_cur_t*
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btr_pcur_get_btr_cur(
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/*=================*/
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/* out: pointer to btr cursor component */
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btr_pcur_t* cursor) /* in: persistent cursor */
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{
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return(&(cursor->btr_cur));
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}
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/*************************************************************
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Returns the page cursor component of a persistent cursor. */
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UNIV_INLINE
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page_cur_t*
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btr_pcur_get_page_cur(
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/*==================*/
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/* out: pointer to page cursor component */
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btr_pcur_t* cursor) /* in: persistent cursor */
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{
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return(btr_cur_get_page_cur(&(cursor->btr_cur)));
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}
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/*************************************************************
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Returns the page of a persistent cursor. */
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UNIV_INLINE
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page_t*
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btr_pcur_get_page(
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/*==============*/
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/* out: pointer to the page */
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btr_pcur_t* cursor) /* in: persistent cursor */
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{
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ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED);
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return(page_cur_get_page(btr_pcur_get_page_cur(cursor)));
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}
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/*************************************************************
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Returns the record of a persistent cursor. */
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UNIV_INLINE
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rec_t*
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btr_pcur_get_rec(
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/*=============*/
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/* out: pointer to the record */
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btr_pcur_t* cursor) /* in: persistent cursor */
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{
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ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED);
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ut_ad(cursor->latch_mode != BTR_NO_LATCHES);
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return(page_cur_get_rec(btr_pcur_get_page_cur(cursor)));
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}
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|
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/******************************************************************
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Gets the up_match value for a pcur after a search. */
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UNIV_INLINE
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ulint
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btr_pcur_get_up_match(
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/*==================*/
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/* out: number of matched fields at the cursor
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or to the right if search mode was PAGE_CUR_GE,
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otherwise undefined */
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btr_pcur_t* cursor) /* in: memory buffer for persistent cursor */
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{
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btr_cur_t* btr_cursor;
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|
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ut_ad((cursor->pos_state == BTR_PCUR_WAS_POSITIONED)
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|| (cursor->pos_state == BTR_PCUR_IS_POSITIONED));
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btr_cursor = btr_pcur_get_btr_cur(cursor);
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ut_ad(btr_cursor->up_match != ULINT_UNDEFINED);
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|
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return(btr_cursor->up_match);
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}
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|
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/******************************************************************
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||||
Gets the low_match value for a pcur after a search. */
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UNIV_INLINE
|
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ulint
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btr_pcur_get_low_match(
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/*===================*/
|
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/* out: number of matched fields at the cursor
|
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or to the right if search mode was PAGE_CUR_LE,
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otherwise undefined */
|
||||
btr_pcur_t* cursor) /* in: memory buffer for persistent cursor */
|
||||
{
|
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btr_cur_t* btr_cursor;
|
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|
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ut_ad((cursor->pos_state == BTR_PCUR_WAS_POSITIONED)
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|| (cursor->pos_state == BTR_PCUR_IS_POSITIONED));
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|
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btr_cursor = btr_pcur_get_btr_cur(cursor);
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ut_ad(btr_cursor->low_match != ULINT_UNDEFINED);
|
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|
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return(btr_cursor->low_match);
|
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}
|
||||
|
||||
/*************************************************************
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Checks if the persistent cursor is after the last user record on
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a page. */
|
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UNIV_INLINE
|
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ibool
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btr_pcur_is_after_last_on_page(
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/*===========================*/
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btr_pcur_t* cursor, /* in: persistent cursor */
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mtr_t* mtr) /* in: mtr */
|
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{
|
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UT_NOT_USED(mtr);
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ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED);
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ut_ad(cursor->latch_mode != BTR_NO_LATCHES);
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|
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return(page_cur_is_after_last(btr_pcur_get_page_cur(cursor)));
|
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}
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||||
|
||||
/*************************************************************
|
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Checks if the persistent cursor is before the first user record on
|
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a page. */
|
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UNIV_INLINE
|
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ibool
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btr_pcur_is_before_first_on_page(
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||||
/*=============================*/
|
||||
btr_pcur_t* cursor, /* in: persistent cursor */
|
||||
mtr_t* mtr) /* in: mtr */
|
||||
{
|
||||
UT_NOT_USED(mtr);
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ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED);
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ut_ad(cursor->latch_mode != BTR_NO_LATCHES);
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return(page_cur_is_before_first(btr_pcur_get_page_cur(cursor)));
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}
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||||
|
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/*************************************************************
|
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Checks if the persistent cursor is on a user record. */
|
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UNIV_INLINE
|
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ibool
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||||
btr_pcur_is_on_user_rec(
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/*====================*/
|
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btr_pcur_t* cursor, /* in: persistent cursor */
|
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mtr_t* mtr) /* in: mtr */
|
||||
{
|
||||
ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED);
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ut_ad(cursor->latch_mode != BTR_NO_LATCHES);
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if ((btr_pcur_is_before_first_on_page(cursor, mtr))
|
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|| (btr_pcur_is_after_last_on_page(cursor, mtr))) {
|
||||
|
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return(FALSE);
|
||||
}
|
||||
|
||||
return(TRUE);
|
||||
}
|
||||
|
||||
/*************************************************************
|
||||
Checks if the persistent cursor is before the first user record in
|
||||
the index tree. */
|
||||
UNIV_INLINE
|
||||
ibool
|
||||
btr_pcur_is_before_first_in_tree(
|
||||
/*=============================*/
|
||||
btr_pcur_t* cursor, /* in: persistent cursor */
|
||||
mtr_t* mtr) /* in: mtr */
|
||||
{
|
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ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED);
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ut_ad(cursor->latch_mode != BTR_NO_LATCHES);
|
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if (btr_page_get_prev(btr_pcur_get_page(cursor), mtr) != FIL_NULL) {
|
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|
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return(FALSE);
|
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}
|
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|
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return(page_cur_is_before_first(btr_pcur_get_page_cur(cursor)));
|
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}
|
||||
|
||||
/*************************************************************
|
||||
Checks if the persistent cursor is after the last user record in
|
||||
the index tree. */
|
||||
UNIV_INLINE
|
||||
ibool
|
||||
btr_pcur_is_after_last_in_tree(
|
||||
/*===========================*/
|
||||
btr_pcur_t* cursor, /* in: persistent cursor */
|
||||
mtr_t* mtr) /* in: mtr */
|
||||
{
|
||||
ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED);
|
||||
ut_ad(cursor->latch_mode != BTR_NO_LATCHES);
|
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|
||||
if (btr_page_get_next(btr_pcur_get_page(cursor), mtr) != FIL_NULL) {
|
||||
|
||||
return(FALSE);
|
||||
}
|
||||
|
||||
return(page_cur_is_after_last(btr_pcur_get_page_cur(cursor)));
|
||||
}
|
||||
|
||||
/*************************************************************
|
||||
Moves the persistent cursor to the next record on the same page. */
|
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UNIV_INLINE
|
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void
|
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btr_pcur_move_to_next_on_page(
|
||||
/*==========================*/
|
||||
btr_pcur_t* cursor, /* in: persistent cursor */
|
||||
mtr_t* mtr) /* in: mtr */
|
||||
{
|
||||
UT_NOT_USED(mtr);
|
||||
ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED);
|
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ut_ad(cursor->latch_mode != BTR_NO_LATCHES);
|
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|
||||
page_cur_move_to_next(btr_pcur_get_page_cur(cursor));
|
||||
|
||||
cursor->old_stored = BTR_PCUR_OLD_NOT_STORED;
|
||||
}
|
||||
|
||||
/*************************************************************
|
||||
Moves the persistent cursor to the previous record on the same page. */
|
||||
UNIV_INLINE
|
||||
void
|
||||
btr_pcur_move_to_prev_on_page(
|
||||
/*==========================*/
|
||||
btr_pcur_t* cursor, /* in: persistent cursor */
|
||||
mtr_t* mtr) /* in: mtr */
|
||||
{
|
||||
UT_NOT_USED(mtr);
|
||||
ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED);
|
||||
ut_ad(cursor->latch_mode != BTR_NO_LATCHES);
|
||||
|
||||
page_cur_move_to_prev(btr_pcur_get_page_cur(cursor));
|
||||
|
||||
cursor->old_stored = BTR_PCUR_OLD_NOT_STORED;
|
||||
}
|
||||
|
||||
/*************************************************************
|
||||
Moves the persistent cursor to the last record on the same page. */
|
||||
UNIV_INLINE
|
||||
void
|
||||
btr_pcur_move_to_last_on_page(
|
||||
/*==========================*/
|
||||
btr_pcur_t* cursor, /* in: persistent cursor */
|
||||
mtr_t* mtr) /* in: mtr */
|
||||
{
|
||||
UT_NOT_USED(mtr);
|
||||
ut_ad(cursor->latch_mode != BTR_NO_LATCHES);
|
||||
|
||||
page_cur_set_after_last(buf_frame_align(btr_pcur_get_rec(cursor)),
|
||||
btr_pcur_get_page_cur(cursor));
|
||||
|
||||
cursor->old_stored = BTR_PCUR_OLD_NOT_STORED;
|
||||
}
|
||||
|
||||
/*************************************************************
|
||||
Moves the persistent cursor to the next user record in the tree. If no user
|
||||
records are left, the cursor ends up 'after last in tree'. */
|
||||
UNIV_INLINE
|
||||
ibool
|
||||
btr_pcur_move_to_next_user_rec(
|
||||
/*===========================*/
|
||||
/* out: TRUE if the cursor moved forward,
|
||||
ending on a user record */
|
||||
btr_pcur_t* cursor, /* in: persistent cursor; NOTE that the
|
||||
function may release the page latch */
|
||||
mtr_t* mtr) /* in: mtr */
|
||||
{
|
||||
ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED);
|
||||
ut_ad(cursor->latch_mode != BTR_NO_LATCHES);
|
||||
cursor->old_stored = BTR_PCUR_OLD_NOT_STORED;
|
||||
loop:
|
||||
if (btr_pcur_is_after_last_on_page(cursor, mtr)) {
|
||||
|
||||
if (btr_pcur_is_after_last_in_tree(cursor, mtr)) {
|
||||
|
||||
return(FALSE);
|
||||
}
|
||||
|
||||
btr_pcur_move_to_next_page(cursor, mtr);
|
||||
} else {
|
||||
btr_pcur_move_to_next_on_page(cursor, mtr);
|
||||
}
|
||||
|
||||
if (btr_pcur_is_on_user_rec(cursor, mtr)) {
|
||||
|
||||
return(TRUE);
|
||||
}
|
||||
|
||||
goto loop;
|
||||
}
|
||||
|
||||
/*************************************************************
|
||||
Moves the persistent cursor to the next record in the tree. If no records are
|
||||
left, the cursor stays 'after last in tree'. */
|
||||
UNIV_INLINE
|
||||
ibool
|
||||
btr_pcur_move_to_next(
|
||||
/*==================*/
|
||||
/* out: TRUE if the cursor was not after last
|
||||
in tree */
|
||||
btr_pcur_t* cursor, /* in: persistent cursor; NOTE that the
|
||||
function may release the page latch */
|
||||
mtr_t* mtr) /* in: mtr */
|
||||
{
|
||||
ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED);
|
||||
ut_ad(cursor->latch_mode != BTR_NO_LATCHES);
|
||||
|
||||
cursor->old_stored = BTR_PCUR_OLD_NOT_STORED;
|
||||
|
||||
if (btr_pcur_is_after_last_on_page(cursor, mtr)) {
|
||||
|
||||
if (btr_pcur_is_after_last_in_tree(cursor, mtr)) {
|
||||
|
||||
return(FALSE);
|
||||
}
|
||||
|
||||
btr_pcur_move_to_next_page(cursor, mtr);
|
||||
|
||||
return(TRUE);
|
||||
}
|
||||
|
||||
btr_pcur_move_to_next_on_page(cursor, mtr);
|
||||
|
||||
return(TRUE);
|
||||
}
|
||||
|
||||
/******************************************************************
|
||||
Commits the pcur mtr and sets the pcur latch mode to BTR_NO_LATCHES,
|
||||
that is, the cursor becomes detached. If there have been modifications
|
||||
to the page where pcur is positioned, this can be used instead of
|
||||
btr_pcur_release_leaf. Function btr_pcur_store_position should be used
|
||||
before calling this, if restoration of cursor is wanted later. */
|
||||
UNIV_INLINE
|
||||
void
|
||||
btr_pcur_commit(
|
||||
/*============*/
|
||||
btr_pcur_t* pcur) /* in: persistent cursor */
|
||||
{
|
||||
ut_a(pcur->pos_state == BTR_PCUR_IS_POSITIONED);
|
||||
|
||||
pcur->latch_mode = BTR_NO_LATCHES;
|
||||
|
||||
mtr_commit(pcur->mtr);
|
||||
|
||||
pcur->pos_state = BTR_PCUR_WAS_POSITIONED;
|
||||
}
|
||||
|
||||
/******************************************************************
|
||||
Differs from btr_pcur_commit in that we can specify the mtr to commit. */
|
||||
UNIV_INLINE
|
||||
void
|
||||
btr_pcur_commit_specify_mtr(
|
||||
/*========================*/
|
||||
btr_pcur_t* pcur, /* in: persistent cursor */
|
||||
mtr_t* mtr) /* in: mtr to commit */
|
||||
{
|
||||
ut_a(pcur->pos_state == BTR_PCUR_IS_POSITIONED);
|
||||
|
||||
pcur->latch_mode = BTR_NO_LATCHES;
|
||||
|
||||
mtr_commit(mtr);
|
||||
|
||||
pcur->pos_state = BTR_PCUR_WAS_POSITIONED;
|
||||
}
|
||||
|
||||
/******************************************************************
|
||||
Sets the pcur latch mode to BTR_NO_LATCHES. */
|
||||
UNIV_INLINE
|
||||
void
|
||||
btr_pcur_detach(
|
||||
/*============*/
|
||||
btr_pcur_t* pcur) /* in: persistent cursor */
|
||||
{
|
||||
ut_a(pcur->pos_state == BTR_PCUR_IS_POSITIONED);
|
||||
|
||||
pcur->latch_mode = BTR_NO_LATCHES;
|
||||
|
||||
pcur->pos_state = BTR_PCUR_WAS_POSITIONED;
|
||||
}
|
||||
|
||||
/******************************************************************
|
||||
Tests if a cursor is detached: that is the latch mode is BTR_NO_LATCHES. */
|
||||
UNIV_INLINE
|
||||
ibool
|
||||
btr_pcur_is_detached(
|
||||
/*=================*/
|
||||
/* out: TRUE if detached */
|
||||
btr_pcur_t* pcur) /* in: persistent cursor */
|
||||
{
|
||||
if (pcur->latch_mode == BTR_NO_LATCHES) {
|
||||
|
||||
return(TRUE);
|
||||
}
|
||||
|
||||
return(FALSE);
|
||||
}
|
||||
|
||||
/******************************************************************
|
||||
Sets the old_rec_buf field to NULL. */
|
||||
UNIV_INLINE
|
||||
void
|
||||
btr_pcur_init(
|
||||
/*==========*/
|
||||
btr_pcur_t* pcur) /* in: persistent cursor */
|
||||
{
|
||||
pcur->old_stored = BTR_PCUR_OLD_NOT_STORED;
|
||||
pcur->old_rec_buf = NULL;
|
||||
pcur->old_rec = NULL;
|
||||
}
|
||||
|
||||
/******************************************************************
|
||||
Initializes and opens a persistent cursor to an index tree. It should be
|
||||
closed with btr_pcur_close. */
|
||||
UNIV_INLINE
|
||||
void
|
||||
btr_pcur_open(
|
||||
/*==========*/
|
||||
dict_index_t* index, /* in: index */
|
||||
dtuple_t* tuple, /* in: tuple on which search done */
|
||||
ulint mode, /* in: PAGE_CUR_L, ...;
|
||||
NOTE that if the search is made using a unique
|
||||
prefix of a record, mode should be
|
||||
PAGE_CUR_LE, not PAGE_CUR_GE, as the latter
|
||||
may end up on the previous page from the
|
||||
record! */
|
||||
ulint latch_mode,/* in: BTR_SEARCH_LEAF, ... */
|
||||
btr_pcur_t* cursor, /* in: memory buffer for persistent cursor */
|
||||
mtr_t* mtr) /* in: mtr */
|
||||
{
|
||||
btr_cur_t* btr_cursor;
|
||||
|
||||
/* Initialize the cursor */
|
||||
|
||||
btr_pcur_init(cursor);
|
||||
|
||||
cursor->latch_mode = latch_mode;
|
||||
cursor->search_mode = mode;
|
||||
|
||||
/* Search with the tree cursor */
|
||||
|
||||
btr_cursor = btr_pcur_get_btr_cur(cursor);
|
||||
|
||||
btr_cur_search_to_nth_level(index, 0, tuple, mode, latch_mode,
|
||||
btr_cursor, 0, mtr);
|
||||
cursor->pos_state = BTR_PCUR_IS_POSITIONED;
|
||||
|
||||
cursor->trx_if_known = NULL;
|
||||
}
|
||||
|
||||
/******************************************************************
|
||||
Opens an persistent cursor to an index tree without initializing the
|
||||
cursor. */
|
||||
UNIV_INLINE
|
||||
void
|
||||
btr_pcur_open_with_no_init(
|
||||
/*=======================*/
|
||||
dict_index_t* index, /* in: index */
|
||||
dtuple_t* tuple, /* in: tuple on which search done */
|
||||
ulint mode, /* in: PAGE_CUR_L, ...;
|
||||
NOTE that if the search is made using a unique
|
||||
prefix of a record, mode should be
|
||||
PAGE_CUR_LE, not PAGE_CUR_GE, as the latter
|
||||
may end up on the previous page of the
|
||||
record! */
|
||||
ulint latch_mode,/* in: BTR_SEARCH_LEAF, ...;
|
||||
NOTE that if has_search_latch != 0 then
|
||||
we maybe do not acquire a latch on the cursor
|
||||
page, but assume that the caller uses his
|
||||
btr search latch to protect the record! */
|
||||
btr_pcur_t* cursor, /* in: memory buffer for persistent cursor */
|
||||
ulint has_search_latch,/* in: latch mode the caller
|
||||
currently has on btr_search_latch:
|
||||
RW_S_LATCH, or 0 */
|
||||
mtr_t* mtr) /* in: mtr */
|
||||
{
|
||||
btr_cur_t* btr_cursor;
|
||||
|
||||
cursor->latch_mode = latch_mode;
|
||||
cursor->search_mode = mode;
|
||||
|
||||
/* Search with the tree cursor */
|
||||
|
||||
btr_cursor = btr_pcur_get_btr_cur(cursor);
|
||||
|
||||
btr_cur_search_to_nth_level(index, 0, tuple, mode, latch_mode,
|
||||
btr_cursor, has_search_latch, mtr);
|
||||
cursor->pos_state = BTR_PCUR_IS_POSITIONED;
|
||||
|
||||
cursor->old_stored = BTR_PCUR_OLD_NOT_STORED;
|
||||
|
||||
cursor->trx_if_known = NULL;
|
||||
}
|
||||
|
||||
/*********************************************************************
|
||||
Opens a persistent cursor at either end of an index. */
|
||||
UNIV_INLINE
|
||||
void
|
||||
btr_pcur_open_at_index_side(
|
||||
/*========================*/
|
||||
ibool from_left, /* in: TRUE if open to the low end,
|
||||
FALSE if to the high end */
|
||||
dict_index_t* index, /* in: index */
|
||||
ulint latch_mode, /* in: latch mode */
|
||||
btr_pcur_t* pcur, /* in: cursor */
|
||||
ibool do_init, /* in: TRUE if should be initialized */
|
||||
mtr_t* mtr) /* in: mtr */
|
||||
{
|
||||
pcur->latch_mode = latch_mode;
|
||||
|
||||
if (from_left) {
|
||||
pcur->search_mode = PAGE_CUR_G;
|
||||
} else {
|
||||
pcur->search_mode = PAGE_CUR_L;
|
||||
}
|
||||
|
||||
if (do_init) {
|
||||
btr_pcur_init(pcur);
|
||||
}
|
||||
|
||||
btr_cur_open_at_index_side(from_left, index, latch_mode,
|
||||
btr_pcur_get_btr_cur(pcur), mtr);
|
||||
pcur->pos_state = BTR_PCUR_IS_POSITIONED;
|
||||
|
||||
pcur->old_stored = BTR_PCUR_OLD_NOT_STORED;
|
||||
|
||||
pcur->trx_if_known = NULL;
|
||||
}
|
||||
|
||||
/**************************************************************************
|
||||
Positions a cursor at a randomly chosen position within a B-tree. */
|
||||
UNIV_INLINE
|
||||
void
|
||||
btr_pcur_open_at_rnd_pos(
|
||||
/*=====================*/
|
||||
dict_index_t* index, /* in: index */
|
||||
ulint latch_mode, /* in: BTR_SEARCH_LEAF, ... */
|
||||
btr_pcur_t* cursor, /* in/out: B-tree pcur */
|
||||
mtr_t* mtr) /* in: mtr */
|
||||
{
|
||||
/* Initialize the cursor */
|
||||
|
||||
cursor->latch_mode = latch_mode;
|
||||
cursor->search_mode = PAGE_CUR_G;
|
||||
|
||||
btr_pcur_init(cursor);
|
||||
|
||||
btr_cur_open_at_rnd_pos(index, latch_mode,
|
||||
btr_pcur_get_btr_cur(cursor), mtr);
|
||||
cursor->pos_state = BTR_PCUR_IS_POSITIONED;
|
||||
cursor->old_stored = BTR_PCUR_OLD_NOT_STORED;
|
||||
|
||||
cursor->trx_if_known = NULL;
|
||||
}
|
||||
|
||||
/******************************************************************
|
||||
Frees the possible memory heap of a persistent cursor and sets the latch
|
||||
mode of the persistent cursor to BTR_NO_LATCHES. */
|
||||
UNIV_INLINE
|
||||
void
|
||||
btr_pcur_close(
|
||||
/*===========*/
|
||||
btr_pcur_t* cursor) /* in: persistent cursor */
|
||||
{
|
||||
if (cursor->old_rec_buf != NULL) {
|
||||
|
||||
mem_free(cursor->old_rec_buf);
|
||||
|
||||
cursor->old_rec = NULL;
|
||||
cursor->old_rec_buf = NULL;
|
||||
}
|
||||
|
||||
cursor->btr_cur.page_cur.rec = NULL;
|
||||
cursor->old_rec = NULL;
|
||||
cursor->old_stored = BTR_PCUR_OLD_NOT_STORED;
|
||||
|
||||
cursor->latch_mode = BTR_NO_LATCHES;
|
||||
cursor->pos_state = BTR_PCUR_NOT_POSITIONED;
|
||||
|
||||
cursor->trx_if_known = NULL;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue