src/backend/storage/lmgr/lwlocknames.txt

   1 # Some commonly-used locks have predefined positions within MainLWLockArray;
   2 # these are defined here.  If you add a lock, add it to the end to avoid
   3 # renumbering the existing locks; if you remove a lock, consider leaving a gap
   4 # in the numbering sequence for the benefit of DTrace and other external
   5 # debugging scripts.  Also, do not forget to update the section
   6 # WaitEventLWLock of src/backend/utils/activity/wait_event_names.txt.
   7
   8 # 0 is available; was formerly BufFreelistLock
   9 ShmemIndexLock                                          1
  10 OidGenLock                                                      2
  11 XidGenLock                                                      3
  12 ProcArrayLock                                           4
  13 SInvalReadLock                                          5
  14 SInvalWriteLock                                         6
  15 WALBufMappingLock                                       7
  16 WALWriteLock                                            8
  17 ControlFileLock                                         9
  18 # 10 was CheckpointLock
  19 # 11 was XactSLRULock
  20 # 12 was SubtransSLRULock
  21 MultiXactGenLock                                        13
  22 # 14 was MultiXactOffsetSLRULock
  23 # 15 was MultiXactMemberSLRULock
  24 RelCacheInitLock                                        16
  25 CheckpointerCommLock                            17
  26 TwoPhaseStateLock                                       18
  27 TablespaceCreateLock                            19
  28 BtreeVacuumLock                                         20
  29 AddinShmemInitLock                                      21
  30 AutovacuumLock                                          22
  31 AutovacuumScheduleLock                          23
  32 SyncScanLock                                            24
  33 RelationMappingLock                                     25
  34 #26 was NotifySLRULock
  35 NotifyQueueLock                                         27
  36 SerializableXactHashLock                        28
  37 SerializableFinishedListLock            29
  38 SerializablePredicateListLock           30
  39 # 31 was SerialSLRULock
  40 SyncRepLock                                                     32
  41 BackgroundWorkerLock                            33
  42 DynamicSharedMemoryControlLock          34
  43 AutoFileLock                                            35
  44 ReplicationSlotAllocationLock           36
  45 ReplicationSlotControlLock                      37
  46 #38 was CommitTsSLRULock
  47 CommitTsLock                                            39
  48 ReplicationOriginLock                           40
  49 MultiXactTruncationLock                         41
  50 # 42 was OldSnapshotTimeMapLock
  51 LogicalRepWorkerLock                            43
  52 XactTruncationLock                                      44
  53 # 45 was XactTruncationLock until removal of BackendRandomLock
  54 WrapLimitsVacuumLock                            46
  55 NotifyQueueTailLock                                     47
  56 WaitEventExtensionLock                          48
  57 WALSummarizerLock                                       49
  58 DSMRegistryLock                                         50
  59 InjectionPointLock                              51
  60 SerialControlLock                                       52