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row0sel.c:

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Optimize speed: no need to keep track of set new rec locks in a consistent read
This commit is contained in:
heikki@hundin.mysql.fi 2005-07-02 00:39:47 +03:00
parent a9cf7ad0d1
commit 8bc2fbb0f8
1 changed files with 11 additions and 3 deletions
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14
innobase/row/row0sel.c
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@ -3150,7 +3150,9 @@ row_search_for_mysql(
is set. Then we are able to remove the record locks set here on an
individual row. */
if (srv_locks_unsafe_for_binlog) {
if (srv_locks_unsafe_for_binlog
&& prebuilt->select_lock_type != LOCK_NONE) {
trx_reset_new_rec_lock_info(trx);
}
@ -3793,7 +3795,9 @@ no_gap_lock:
not a consistent read which might see an earlier version
of a non-clustered index record */
if (srv_locks_unsafe_for_binlog) {
if (srv_locks_unsafe_for_binlog
&& prebuilt->select_lock_type != LOCK_NONE) {
/* No need to keep a lock on a delete-marked record
if we do not want to use next-key locking. */
@ -3845,7 +3849,9 @@ requires_clust_rec:
/* The record is delete marked: we can skip it */
if (srv_locks_unsafe_for_binlog) {
if (srv_locks_unsafe_for_binlog
&& prebuilt->select_lock_type != LOCK_NONE) {
/* No need to keep a lock on a delete-marked
record if we do not want to use next-key
locking. */
@ -4013,6 +4019,8 @@ lock_wait_or_error:
thr->lock_state = QUE_THR_LOCK_ROW;
if (row_mysql_handle_errors(&err, trx, thr, NULL)) {
/* It was a lock wait, and it ended */
thr->lock_state = QUE_THR_LOCK_NOLOCK;
mtr_start(&mtr);