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# Some commonly-used locks have predefined positions within MainLWLockArray;
# these are defined here. If you add a lock, add it to the end to avoid
# renumbering the existing locks; if you remove a lock, consider leaving a gap
# in the numbering sequence for the benefit of DTrace and other external
# debugging scripts. Also, do not forget to update the list of wait events
# in the user documentation.
# 0 is available; was formerly BufFreelistLock
ShmemIndexLock 1
OidGenLock 2
XidGenLock 3
ProcArrayLock 4
SInvalReadLock 5
SInvalWriteLock 6
WALBufMappingLock 7
WALWriteLock 8
ControlFileLock 9
# 10 was CheckpointLock
XactSLRULock 11
SubtransSLRULock 12
MultiXactGenLock 13
MultiXactOffsetSLRULock 14
MultiXactMemberSLRULock 15
RelCacheInitLock 16
CheckpointerCommLock 17
TwoPhaseStateLock 18
TablespaceCreateLock 19
BtreeVacuumLock 20
AddinShmemInitLock 21
AutovacuumLock 22
AutovacuumScheduleLock 23
SyncScanLock 24
RelationMappingLock 25
NotifySLRULock 26
NotifyQueueLock 27
SerializableXactHashLock 28
SerializableFinishedListLock 29
SerializablePredicateListLock 30
SerialSLRULock 31
SyncRepLock 32
BackgroundWorkerLock 33
DynamicSharedMemoryControlLock 34
AutoFileLock 35
ReplicationSlotAllocationLock 36
ReplicationSlotControlLock 37
CommitTsSLRULock 38
CommitTsLock 39
ReplicationOriginLock 40
MultiXactTruncationLock 41
OldSnapshotTimeMapLock 42
LogicalRepWorkerLock 43
XactTruncationLock 44
# 45 was XactTruncationLock until removal of BackendRandomLock
WrapLimitsVacuumLock 46
NotifyQueueTailLock 47
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