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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 section
# WaitEventLWLock of src/backend/utils/activity/wait_event_names.txt.
# 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
# 11 was XactSLRULock
# 12 was SubtransSLRULock
MultiXactGenLock 13
# 14 was MultiXactOffsetSLRULock
# 15 was MultiXactMemberSLRULock
RelCacheInitLock 16
CheckpointerCommLock 17
TwoPhaseStateLock 18
TablespaceCreateLock 19
BtreeVacuumLock 20
AddinShmemInitLock 21
AutovacuumLock 22
AutovacuumScheduleLock 23
SyncScanLock 24
RelationMappingLock 25
#26 was NotifySLRULock
NotifyQueueLock 27
SerializableXactHashLock 28
SerializableFinishedListLock 29
SerializablePredicateListLock 30
# 31 was SerialSLRULock
SyncRepLock 32
BackgroundWorkerLock 33
DynamicSharedMemoryControlLock 34
AutoFileLock 35
ReplicationSlotAllocationLock 36
ReplicationSlotControlLock 37
#38 was CommitTsSLRULock
CommitTsLock 39
ReplicationOriginLock 40
MultiXactTruncationLock 41
# 42 was OldSnapshotTimeMapLock
LogicalRepWorkerLock 43
XactTruncationLock 44
# 45 was XactTruncationLock until removal of BackendRandomLock
WrapLimitsVacuumLock 46
NotifyQueueTailLock 47
WaitEventExtensionLock 48
WALSummarizerLock 49
DSMRegistryLock 50
InjectionPointLock 51
SerialControlLock 52
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