1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
/*-------------------------------------------------------------------------
*
* lwlocklist.h
*
* The list of predefined LWLocks and built-in LWLock tranches is kept in
* its own source file for use by automatic tools. The exact
* representation of a keyword is determined by the PG_LWLOCK and
* PG_LWLOCKTRANCHE macros, which are not defined in this file; they can be
* defined by the caller for special purposes.
*
* Also, generate-lwlocknames.pl processes this file to create lwlocknames.h.
*
* Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* src/include/storage/lwlocklist.h
*
*-------------------------------------------------------------------------
*/
/*
* 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.
*
* Note that the names here don't include the Lock suffix, to appease the
* C preprocessor; it's added elsewhere.
*/
/* 0 is available; was formerly BufFreelistLock */
PG_LWLOCK(1, ShmemIndex)
PG_LWLOCK(2, OidGen)
PG_LWLOCK(3, XidGen)
PG_LWLOCK(4, ProcArray)
PG_LWLOCK(5, SInvalRead)
PG_LWLOCK(6, SInvalWrite)
/* 7 was WALBufMapping */
PG_LWLOCK(8, WALWrite)
PG_LWLOCK(9, ControlFile)
/* 10 was CheckpointLock */
/* 11 was XactSLRULock */
/* 12 was SubtransSLRULock */
PG_LWLOCK(13, MultiXactGen)
/* 14 was MultiXactOffsetSLRULock */
/* 15 was MultiXactMemberSLRULock */
PG_LWLOCK(16, RelCacheInit)
PG_LWLOCK(17, CheckpointerComm)
PG_LWLOCK(18, TwoPhaseState)
PG_LWLOCK(19, TablespaceCreate)
PG_LWLOCK(20, BtreeVacuum)
PG_LWLOCK(21, AddinShmemInit)
PG_LWLOCK(22, Autovacuum)
PG_LWLOCK(23, AutovacuumSchedule)
PG_LWLOCK(24, SyncScan)
PG_LWLOCK(25, RelationMapping)
/* 26 was NotifySLRULock */
PG_LWLOCK(27, NotifyQueue)
PG_LWLOCK(28, SerializableXactHash)
PG_LWLOCK(29, SerializableFinishedList)
PG_LWLOCK(30, SerializablePredicateList)
/* 31 was SerialSLRULock */
PG_LWLOCK(32, SyncRep)
PG_LWLOCK(33, BackgroundWorker)
PG_LWLOCK(34, DynamicSharedMemoryControl)
PG_LWLOCK(35, AutoFile)
PG_LWLOCK(36, ReplicationSlotAllocation)
PG_LWLOCK(37, ReplicationSlotControl)
/* 38 was CommitTsSLRULock */
PG_LWLOCK(39, CommitTs)
PG_LWLOCK(40, ReplicationOrigin)
PG_LWLOCK(41, MultiXactTruncation)
/* 42 was OldSnapshotTimeMapLock */
PG_LWLOCK(43, LogicalRepWorker)
PG_LWLOCK(44, XactTruncation)
/* 45 was XactTruncationLock until removal of BackendRandomLock */
PG_LWLOCK(46, WrapLimitsVacuum)
PG_LWLOCK(47, NotifyQueueTail)
PG_LWLOCK(48, WaitEventCustom)
PG_LWLOCK(49, WALSummarizer)
PG_LWLOCK(50, DSMRegistry)
PG_LWLOCK(51, InjectionPoint)
PG_LWLOCK(52, SerialControl)
PG_LWLOCK(53, AioWorkerSubmissionQueue)
/*
* There also exist several built-in LWLock tranches. As with the predefined
* LWLocks, be sure to update the WaitEventLWLock section of
* src/backend/utils/activity/wait_event_names.txt when modifying this list.
*
* Note that the IDs here (the first value) don't include the LWTRANCHE_
* prefix. It's added elsewhere.
*/
PG_LWLOCKTRANCHE(XACT_BUFFER, XactBuffer)
PG_LWLOCKTRANCHE(COMMITTS_BUFFER, CommitTsBuffer)
PG_LWLOCKTRANCHE(SUBTRANS_BUFFER, SubtransBuffer)
PG_LWLOCKTRANCHE(MULTIXACTOFFSET_BUFFER, MultiXactOffsetBuffer)
PG_LWLOCKTRANCHE(MULTIXACTMEMBER_BUFFER, MultiXactMemberBuffer)
PG_LWLOCKTRANCHE(NOTIFY_BUFFER, NotifyBuffer)
PG_LWLOCKTRANCHE(SERIAL_BUFFER, SerialBuffer)
PG_LWLOCKTRANCHE(WAL_INSERT, WALInsert)
PG_LWLOCKTRANCHE(BUFFER_CONTENT, BufferContent)
PG_LWLOCKTRANCHE(REPLICATION_ORIGIN_STATE, ReplicationOriginState)
PG_LWLOCKTRANCHE(REPLICATION_SLOT_IO, ReplicationSlotIO)
PG_LWLOCKTRANCHE(LOCK_FASTPATH, LockFastPath)
PG_LWLOCKTRANCHE(BUFFER_MAPPING, BufferMapping)
PG_LWLOCKTRANCHE(LOCK_MANAGER, LockManager)
PG_LWLOCKTRANCHE(PREDICATE_LOCK_MANAGER, PredicateLockManager)
PG_LWLOCKTRANCHE(PARALLEL_HASH_JOIN, ParallelHashJoin)
PG_LWLOCKTRANCHE(PARALLEL_BTREE_SCAN, ParallelBtreeScan)
PG_LWLOCKTRANCHE(PARALLEL_QUERY_DSA, ParallelQueryDSA)
PG_LWLOCKTRANCHE(PER_SESSION_DSA, PerSessionDSA)
PG_LWLOCKTRANCHE(PER_SESSION_RECORD_TYPE, PerSessionRecordType)
PG_LWLOCKTRANCHE(PER_SESSION_RECORD_TYPMOD, PerSessionRecordTypmod)
PG_LWLOCKTRANCHE(SHARED_TUPLESTORE, SharedTupleStore)
PG_LWLOCKTRANCHE(SHARED_TIDBITMAP, SharedTidBitmap)
PG_LWLOCKTRANCHE(PARALLEL_APPEND, ParallelAppend)
PG_LWLOCKTRANCHE(PER_XACT_PREDICATE_LIST, PerXactPredicateList)
PG_LWLOCKTRANCHE(PGSTATS_DSA, PgStatsDSA)
PG_LWLOCKTRANCHE(PGSTATS_HASH, PgStatsHash)
PG_LWLOCKTRANCHE(PGSTATS_DATA, PgStatsData)
PG_LWLOCKTRANCHE(LAUNCHER_DSA, LogicalRepLauncherDSA)
PG_LWLOCKTRANCHE(LAUNCHER_HASH, LogicalRepLauncherHash)
PG_LWLOCKTRANCHE(DSM_REGISTRY_DSA, DSMRegistryDSA)
PG_LWLOCKTRANCHE(DSM_REGISTRY_HASH, DSMRegistryHash)
PG_LWLOCKTRANCHE(COMMITTS_SLRU, CommitTsSLRU)
PG_LWLOCKTRANCHE(MULTIXACTOFFSET_SLRU, MultiXactOffsetSLRU)
PG_LWLOCKTRANCHE(MULTIXACTMEMBER_SLRU, MultiXactMemberSLRU)
PG_LWLOCKTRANCHE(NOTIFY_SLRU, NotifySLRU)
PG_LWLOCKTRANCHE(SERIAL_SLRU, SerialSLRU)
PG_LWLOCKTRANCHE(SUBTRANS_SLRU, SubtransSLRU)
PG_LWLOCKTRANCHE(XACT_SLRU, XactSLRU)
PG_LWLOCKTRANCHE(PARALLEL_VACUUM_DSA, ParallelVacuumDSA)
PG_LWLOCKTRANCHE(AIO_URING_COMPLETION, AioUringCompletion)
|
