diff options
Diffstat (limited to 'storage/perfschema')
| -rw-r--r-- | storage/perfschema/pfs_events_waits.cc | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/storage/perfschema/pfs_events_waits.cc b/storage/perfschema/pfs_events_waits.cc index b6cadf9e61c..a941f815dca 100644 --- a/storage/perfschema/pfs_events_waits.cc +++ b/storage/perfschema/pfs_events_waits.cc @@ -93,6 +93,9 @@ static inline void copy_events_waits(PFS_events_waits *dest, */ void insert_events_waits_history(PFS_thread *thread, PFS_events_waits *wait) { + if (unlikely(events_waits_history_per_thread == 0)) + return; + uint index= thread->m_waits_history_index; /* @@ -120,6 +123,9 @@ void insert_events_waits_history(PFS_thread *thread, PFS_events_waits *wait) */ void insert_events_waits_history_long(PFS_events_waits *wait) { + if (unlikely(events_waits_history_long_size == 0)) + return; + uint index= PFS_atomic::add_u32(&events_waits_history_long_index, 1); index= index % events_waits_history_long_size; |