diff options
Diffstat (limited to 'innobase/srv/srv0srv.c')
| -rw-r--r-- | innobase/srv/srv0srv.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/innobase/srv/srv0srv.c b/innobase/srv/srv0srv.c index 431138400b6..6b755ae9816 100644 --- a/innobase/srv/srv0srv.c +++ b/innobase/srv/srv0srv.c @@ -1372,7 +1372,7 @@ srv_table_reserve_slot_for_mysql(void) /******************************************************************* Puts a MySQL OS thread to wait for a lock to be released. If an error -occurs during the wait trx->error_state associated with thr is +occurs during the wait, then trx->error_state associated with thr is != DB_SUCCESS when we return. DB_LOCK_WAIT_TIMEOUT and DB_DEADLOCK are possible errors. DB_DEADLOCK is returned if selective deadlock resolution chose this transaction as a victim. */ @@ -1442,8 +1442,11 @@ srv_suspend_mysql_thread( srv_n_lock_wait_count++; srv_n_lock_wait_current_count++; - ut_usectime(&sec, &ms); - start_time = (ib_longlong)sec * 1000000 + ms; + if (ut_usectime(&sec, &ms) == -1) { + start_time = -1; + } else { + start_time = (ib_longlong)sec * 1000000 + ms; + } } /* Wake the lock timeout monitor thread, if it is suspended */ @@ -1497,14 +1500,20 @@ srv_suspend_mysql_thread( wait_time = ut_difftime(ut_time(), slot->suspend_time); if (thr->lock_state == QUE_THR_LOCK_ROW) { - ut_usectime(&sec, &ms); - finish_time = (ib_longlong)sec * 1000000 + ms; + if (ut_usectime(&sec, &ms) == -1) { + finish_time = -1; + } else { + finish_time = (ib_longlong)sec * 1000000 + ms; + } diff_time = (ulint) (finish_time - start_time); srv_n_lock_wait_current_count--; srv_n_lock_wait_time = srv_n_lock_wait_time + diff_time; - if (diff_time > srv_n_lock_max_wait_time) { + if (diff_time > srv_n_lock_max_wait_time && + /* only update the variable if we successfully + retrieved the start and finish times. See Bug#36819. */ + start_time != -1 && finish_time != -1) { srv_n_lock_max_wait_time = diff_time; } } |