diff options
Diffstat (limited to 'src/backend/utils/activity/pgstat_shmem.c')
| -rw-r--r-- | src/backend/utils/activity/pgstat_shmem.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/backend/utils/activity/pgstat_shmem.c b/src/backend/utils/activity/pgstat_shmem.c index 89060ef29a0..ac989186884 100644 --- a/src/backend/utils/activity/pgstat_shmem.c +++ b/src/backend/utils/activity/pgstat_shmem.c @@ -579,6 +579,22 @@ pgstat_lock_entry(PgStat_EntryRef *entry_ref, bool nowait) return true; } +/* + * Separate from pgstat_lock_entry() as most callers will need to lock + * exclusively. + */ +bool +pgstat_lock_entry_shared(PgStat_EntryRef *entry_ref, bool nowait) +{ + LWLock *lock = &entry_ref->shared_stats->lock; + + if (nowait) + return LWLockConditionalAcquire(lock, LW_SHARED); + + LWLockAcquire(lock, LW_SHARED); + return true; +} + void pgstat_unlock_entry(PgStat_EntryRef *entry_ref) { |