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InnoDB: cleanup of B-tree cursor operations

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marko@hundin.mysql.fi 2004-03-31 11:40:07 +03:00
parent 7f2a007496
commit 7f1f7b9391
1 changed files with 18 additions and 14 deletions
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32
innobase/btr/btr0cur.c
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@ -120,7 +120,6 @@ static
void
btr_cur_latch_leaves(
/*=================*/
dict_tree_t* tree __attribute__((unused)), /* in: index tree */
page_t* page, /* in: leaf page where the search
converged */
ulint space, /* in: space id */
@ -133,7 +132,7 @@ btr_cur_latch_leaves(
ulint right_page_no;
page_t* get_page;
ut_ad(tree && page && mtr);
ut_ad(page && mtr);
if (latch_mode == BTR_SEARCH_LEAF) {
@ -365,17 +364,19 @@ btr_cur_search_to_nth_level(
B-tree. These let us end up in the right B-tree leaf. In that leaf
we use the original search mode. */
if (mode == PAGE_CUR_GE) {
switch (mode) {
case PAGE_CUR_GE:
page_mode = PAGE_CUR_L;
} else if (mode == PAGE_CUR_G) {
break;
case PAGE_CUR_G:
page_mode = PAGE_CUR_LE;
} else if (mode == PAGE_CUR_LE) {
page_mode = PAGE_CUR_LE;
} else if (mode == PAGE_CUR_LE_OR_EXTENDS) {
page_mode = PAGE_CUR_LE_OR_EXTENDS;
} else {
ut_ad(mode == PAGE_CUR_L);
page_mode = PAGE_CUR_L;
break;
default:
ut_ad(mode == PAGE_CUR_L
|| mode == PAGE_CUR_LE
|| mode == PAGE_CUR_LE_OR_EXTENDS);
page_mode = mode;
break;
}
/* Loop and search until we arrive at the desired level */
@ -450,7 +451,7 @@ retry_page_get:
if (height == 0) {
if (rw_latch == RW_NO_LATCH) {
btr_cur_latch_leaves(tree, page, space,
btr_cur_latch_leaves(page, space,
page_no, latch_mode, cursor,
mtr);
}
@ -477,6 +478,9 @@ retry_page_get:
/* If this is the desired level, leave the loop */
ut_ad(height
== btr_page_get_level(page_cur_get_page(page_cursor), mtr));
if (level == height) {
if (level > 0) {
@ -588,7 +592,7 @@ btr_cur_open_at_index_side(
}
if (height == 0) {
btr_cur_latch_leaves(tree, page, space, page_no,
btr_cur_latch_leaves(page, space, page_no,
latch_mode, cursor, mtr);
/* In versions <= 3.23.52 we had forgotten to
@ -694,7 +698,7 @@ btr_cur_open_at_rnd_pos(
}
if (height == 0) {
btr_cur_latch_leaves(tree, page, space, page_no,
btr_cur_latch_leaves(page, space, page_no,
latch_mode, cursor, mtr);
}