diff options
Diffstat (limited to 'storage/innobase/mtr/mtr0mtr.cc')
| -rw-r--r-- | storage/innobase/mtr/mtr0mtr.cc | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/storage/innobase/mtr/mtr0mtr.cc b/storage/innobase/mtr/mtr0mtr.cc index 94a88bd3f83..17b524f610f 100644 --- a/storage/innobase/mtr/mtr0mtr.cc +++ b/storage/innobase/mtr/mtr0mtr.cc @@ -702,6 +702,31 @@ inline lsn_t mtr_t::finish_write(ulint len) return start_lsn; } +/** Find buffer fix count of the given block acquired by the +mini-transaction */ +struct FindBlock +{ + int32_t num_fix; + const buf_block_t *const block; + + FindBlock(const buf_block_t *block_buf): num_fix(0), block(block_buf) {} + + bool operator()(const mtr_memo_slot_t* slot) + { + if (slot->object == block) + num_fix++; + return true; + } +}; + +uint32_t mtr_t::get_fix_count(const buf_block_t *block) const +{ + Iterate<FindBlock> iteration((FindBlock(block))); + if (m_memo.for_each_block(iteration)) + return iteration.functor.num_fix; + return 0; +} + #ifdef UNIV_DEBUG /** Check if we are holding an rw-latch in this mini-transaction @param lock latch to search for |