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Follow-up to MDEV-14952: Remove some more btr_get_search_latch()

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Replace some !rw_lock_own() assertions with the stronger
!btr_search_own_any(). Remove some redundant btr_get_search_latch()
calls.

btr_search_update_hash_ref(): Remove a duplicated assertion.

btr_search_build_page_hash_index(): Remove a duplicated assertion.
rw_lock_s_lock() asserts that the latch is not being held.

btr_search_disable_ref_count(): Remove an assertion. The only caller
is acquiring all adaptive hash index latches.
This commit is contained in:
Marko Mäkelä 2018-01-16 14:05:06 +02:00
parent 2281fcf38a
commit d87531a6a0
2 changed files with 15 additions and 21 deletions
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32
storage/innobase/btr/btr0sea.cc
View file

@ -189,13 +189,13 @@ will not guarantee success.
@param[in] index index handler */
static
void
btr_search_check_free_space_in_heap(dict_index_t* index)
btr_search_check_free_space_in_heap(const dict_index_t* index)
{
hash_table_t* table;
mem_heap_t* heap;
ut_ad(!rw_lock_own(btr_get_search_latch(index), RW_LOCK_S));
ut_ad(!rw_lock_own(btr_get_search_latch(index), RW_LOCK_X));
ut_ad(!btr_search_own_any(RW_LOCK_S));
ut_ad(!btr_search_own_any(RW_LOCK_X));
table = btr_get_search_table(index);
@ -345,9 +345,6 @@ btr_search_disable_ref_count(
for (index = dict_table_get_first_index(table);
index != NULL;
index = dict_table_get_next_index(index)) {
ut_ad(rw_lock_own(btr_get_search_latch(index), RW_LOCK_X));
index->search_info->ref_count = 0;
}
}
@ -464,8 +461,8 @@ btr_search_info_update_hash(
ulint n_unique;
int cmp;
ut_ad(!rw_lock_own(btr_get_search_latch(index), RW_LOCK_S));
ut_ad(!rw_lock_own(btr_get_search_latch(index), RW_LOCK_X));
ut_ad(!btr_search_own_any(RW_LOCK_S));
ut_ad(!btr_search_own_any(RW_LOCK_X));
if (dict_index_is_ibuf(index)) {
/* So many deletes are performed on an insert buffer tree
@ -572,14 +569,14 @@ semaphore, to save CPU time! Do not assume the fields are consistent.
@param[in,out] block buffer block
@param[in] cursor cursor */
static
ibool
bool
btr_search_update_block_hash_info(
btr_search_t* info,
buf_block_t* block,
const btr_cur_t* cursor)
{
ut_ad(!rw_lock_own(btr_get_search_latch(cursor->index), RW_LOCK_S));
ut_ad(!rw_lock_own(btr_get_search_latch(cursor->index), RW_LOCK_X));
ut_ad(!btr_search_own_any(RW_LOCK_S));
ut_ad(!btr_search_own_any(RW_LOCK_X));
ut_ad(rw_lock_own(&block->lock, RW_LOCK_S)
|| rw_lock_own(&block->lock, RW_LOCK_X));
@ -626,11 +623,11 @@ btr_search_update_block_hash_info(
/* Build a new hash index on the page */
return(TRUE);
return(true);
}
}
return(FALSE);
return(false);
}
/** Updates a hash node reference when it has been unsuccessfully used in a
@ -670,8 +667,8 @@ btr_search_update_hash_ref(
}
ut_ad(block->page.id.space() == index->space);
ut_a(index == cursor->index);
ut_a(!dict_index_is_ibuf(index));
ut_ad(index == cursor->index);
ut_ad(!dict_index_is_ibuf(index));
if ((info->n_hash_potential > 0)
&& (block->curr_n_fields == info->n_fields)
@ -696,7 +693,6 @@ btr_search_update_hash_ref(
if (UNIV_LIKELY_NULL(heap)) {
mem_heap_free(heap);
}
ut_ad(rw_lock_own(btr_get_search_latch(index), RW_LOCK_X));
ha_insert_for_fold(btr_get_search_table(index), fold,
block, rec);
@ -948,10 +944,9 @@ btr_search_guess_on_hash(
}
} else {
ut_ad(btr_search_enabled);
ut_ad(rw_lock_own(ahi_latch, RW_LOCK_S));
}
ut_ad(rw_lock_own(btr_get_search_latch(index), RW_LOCK_S));
rec = (rec_t*) ha_search_and_get_data(
btr_get_search_table(index), fold);
@ -1379,7 +1374,6 @@ btr_search_build_page_hash_index(
ut_a(!dict_index_is_ibuf(index));
ut_ad(page_is_leaf(block->frame));
ut_ad(!rw_lock_own(btr_get_search_latch(index), RW_LOCK_X));
ut_ad(rw_lock_own(&(block->lock), RW_LOCK_S)
|| rw_lock_own(&(block->lock), RW_LOCK_X));

4
storage/innobase/include/btr0sea.ic
View file

@ -61,8 +61,8 @@ btr_search_info_update(
dict_index_t* index, /*!< in: index of the cursor */
btr_cur_t* cursor) /*!< in: cursor which was just positioned */
{
ut_ad(!rw_lock_own(btr_get_search_latch(index), RW_LOCK_S));
ut_ad(!rw_lock_own(btr_get_search_latch(index), RW_LOCK_X));
ut_ad(!btr_search_own_any(RW_LOCK_S));
ut_ad(!btr_search_own_any(RW_LOCK_X));
if (dict_index_is_spatial(index) || !btr_search_enabled) {
return;