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lwlocklist.h
Go to the documentation of this file.
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/*-------------------------------------------------------------------------
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*
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* lwlocklist.h
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*
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* The list of predefined LWLocks and built-in LWLock tranches is kept in
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* its own source file for use by automatic tools. The exact
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* representation of a keyword is determined by the PG_LWLOCK and
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* PG_LWLOCKTRANCHE macros, which are not defined in this file; they can be
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* defined by the caller for special purposes.
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*
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* Also, generate-lwlocknames.pl processes this file to create lwlocknames.h.
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*
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* Portions Copyright (c) 1996-2026, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* IDENTIFICATION
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* src/include/storage/lwlocklist.h
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*
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*-------------------------------------------------------------------------
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*/
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/*
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* Some commonly-used locks have predefined positions within MainLWLockArray;
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* these are defined here. If you add a lock, add it to the end to avoid
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* renumbering the existing locks; if you remove a lock, consider leaving a gap
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* in the numbering sequence for the benefit of DTrace and other external
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* debugging scripts. Also, do not forget to update the section
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* WaitEventLWLock of src/backend/utils/activity/wait_event_names.txt.
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*
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* Note that the names here don't include the Lock suffix, to appease the
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* C preprocessor; it's added elsewhere.
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*/
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/* 0 is available; was formerly BufFreelistLock */
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PG_LWLOCK
(1,
ShmemIndex
)
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PG_LWLOCK
(2,
OidGen
)
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PG_LWLOCK
(3,
XidGen
)
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PG_LWLOCK
(4,
ProcArray
)
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PG_LWLOCK
(5,
SInvalRead
)
40
PG_LWLOCK
(6,
SInvalWrite
)
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PG_LWLOCK
(7,
WALBufMapping
)
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PG_LWLOCK
(8,
WALWrite
)
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PG_LWLOCK
(9,
ControlFile
)
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/* 10 was CheckpointLock */
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/* 11 was XactSLRULock */
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/* 12 was SubtransSLRULock */
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PG_LWLOCK
(13,
MultiXactGen
)
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/* 14 was MultiXactOffsetSLRULock */
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/* 15 was MultiXactMemberSLRULock */
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PG_LWLOCK
(16,
RelCacheInit
)
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PG_LWLOCK
(17,
CheckpointerComm
)
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PG_LWLOCK
(18,
TwoPhaseState
)
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PG_LWLOCK
(19,
TablespaceCreate
)
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PG_LWLOCK
(20,
BtreeVacuum
)
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PG_LWLOCK
(21,
AddinShmemInit
)
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PG_LWLOCK
(22,
Autovacuum
)
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PG_LWLOCK
(23,
AutovacuumSchedule
)
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PG_LWLOCK
(24,
SyncScan
)
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PG_LWLOCK
(25,
RelationMapping
)
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/* 26 was NotifySLRULock */
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PG_LWLOCK
(27,
NotifyQueue
)
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PG_LWLOCK
(28,
SerializableXactHash
)
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PG_LWLOCK
(29,
SerializableFinishedList
)
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PG_LWLOCK
(30,
SerializablePredicateList
)
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/* 31 was SerialSLRULock */
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PG_LWLOCK
(32,
SyncRep
)
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PG_LWLOCK
(33,
BackgroundWorker
)
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PG_LWLOCK
(34,
DynamicSharedMemoryControl
)
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PG_LWLOCK
(35,
AutoFile
)
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PG_LWLOCK
(36,
ReplicationSlotAllocation
)
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PG_LWLOCK
(37,
ReplicationSlotControl
)
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/* 38 was CommitTsSLRULock */
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PG_LWLOCK
(39,
CommitTs
)
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PG_LWLOCK
(40,
ReplicationOrigin
)
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PG_LWLOCK
(41,
MultiXactTruncation
)
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/* 42 was OldSnapshotTimeMapLock */
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PG_LWLOCK
(43,
LogicalRepWorker
)
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PG_LWLOCK
(44,
XactTruncation
)
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/* 45 was XactTruncationLock until removal of BackendRandomLock */
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PG_LWLOCK
(46,
WrapLimitsVacuum
)
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PG_LWLOCK
(47,
NotifyQueueTail
)
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PG_LWLOCK
(48,
WaitEventCustom
)
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PG_LWLOCK
(49,
WALSummarizer
)
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PG_LWLOCK
(50,
DSMRegistry
)
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PG_LWLOCK
(51,
InjectionPoint
)
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PG_LWLOCK
(52,
SerialControl
)
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PG_LWLOCK
(53,
AioWorkerSubmissionQueue
)
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PG_LWLOCK
(54,
WaitLSN
)
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PG_LWLOCK
(55,
LogicalDecodingControl
)
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/*
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* There also exist several built-in LWLock tranches. As with the predefined
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* LWLocks, be sure to update the WaitEventLWLock section of
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* src/backend/utils/activity/wait_event_names.txt when modifying this list.
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*
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* Note that the IDs here (the first value) don't include the LWTRANCHE_
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* prefix. It's added elsewhere.
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*/
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PG_LWLOCKTRANCHE
(
XACT_BUFFER
,
XactBuffer
)
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PG_LWLOCKTRANCHE
(
COMMITTS_BUFFER
,
CommitTsBuffer
)
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PG_LWLOCKTRANCHE
(
SUBTRANS_BUFFER
,
SubtransBuffer
)
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PG_LWLOCKTRANCHE
(
MULTIXACTOFFSET_BUFFER
,
MultiXactOffsetBuffer
)
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PG_LWLOCKTRANCHE
(
MULTIXACTMEMBER_BUFFER
,
MultiXactMemberBuffer
)
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PG_LWLOCKTRANCHE
(
NOTIFY_BUFFER
,
NotifyBuffer
)
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PG_LWLOCKTRANCHE
(
NOTIFY_CHANNEL_HASH
,
NotifyChannelHash
)
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PG_LWLOCKTRANCHE
(
SERIAL_BUFFER
,
SerialBuffer
)
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PG_LWLOCKTRANCHE
(
WAL_INSERT
,
WALInsert
)
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PG_LWLOCKTRANCHE
(
REPLICATION_ORIGIN_STATE
,
ReplicationOriginState
)
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PG_LWLOCKTRANCHE
(
REPLICATION_SLOT_IO
,
ReplicationSlotIO
)
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PG_LWLOCKTRANCHE
(
LOCK_FASTPATH
,
LockFastPath
)
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PG_LWLOCKTRANCHE
(
BUFFER_MAPPING
,
BufferMapping
)
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PG_LWLOCKTRANCHE
(
LOCK_MANAGER
,
LockManager
)
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PG_LWLOCKTRANCHE
(
PREDICATE_LOCK_MANAGER
,
PredicateLockManager
)
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PG_LWLOCKTRANCHE
(
PARALLEL_HASH_JOIN
,
ParallelHashJoin
)
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PG_LWLOCKTRANCHE
(
PARALLEL_BTREE_SCAN
,
ParallelBtreeScan
)
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PG_LWLOCKTRANCHE
(
PARALLEL_QUERY_DSA
,
ParallelQueryDSA
)
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PG_LWLOCKTRANCHE
(
PER_SESSION_DSA
,
PerSessionDSA
)
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PG_LWLOCKTRANCHE
(
PER_SESSION_RECORD_TYPE
,
PerSessionRecordType
)
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PG_LWLOCKTRANCHE
(
PER_SESSION_RECORD_TYPMOD
,
PerSessionRecordTypmod
)
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PG_LWLOCKTRANCHE
(
SHARED_TUPLESTORE
,
SharedTupleStore
)
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PG_LWLOCKTRANCHE
(
SHARED_TIDBITMAP
,
SharedTidBitmap
)
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PG_LWLOCKTRANCHE
(
PARALLEL_APPEND
,
ParallelAppend
)
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PG_LWLOCKTRANCHE
(
PER_XACT_PREDICATE_LIST
,
PerXactPredicateList
)
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PG_LWLOCKTRANCHE
(
PGSTATS_DSA
,
PgStatsDSA
)
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PG_LWLOCKTRANCHE
(
PGSTATS_HASH
,
PgStatsHash
)
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PG_LWLOCKTRANCHE
(
PGSTATS_DATA
,
PgStatsData
)
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PG_LWLOCKTRANCHE
(
LAUNCHER_DSA
,
LogicalRepLauncherDSA
)
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PG_LWLOCKTRANCHE
(
LAUNCHER_HASH
,
LogicalRepLauncherHash
)
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PG_LWLOCKTRANCHE
(
DSM_REGISTRY_DSA
,
DSMRegistryDSA
)
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PG_LWLOCKTRANCHE
(
DSM_REGISTRY_HASH
,
DSMRegistryHash
)
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PG_LWLOCKTRANCHE
(
COMMITTS_SLRU
,
CommitTsSLRU
)
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PG_LWLOCKTRANCHE
(
MULTIXACTOFFSET_SLRU
,
MultiXactOffsetSLRU
)
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PG_LWLOCKTRANCHE
(
MULTIXACTMEMBER_SLRU
,
MultiXactMemberSLRU
)
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PG_LWLOCKTRANCHE
(
NOTIFY_SLRU
,
NotifySLRU
)
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PG_LWLOCKTRANCHE
(
SERIAL_SLRU
,
SerialSLRU
)
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PG_LWLOCKTRANCHE
(
SUBTRANS_SLRU
,
SubtransSLRU
)
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PG_LWLOCKTRANCHE
(
XACT_SLRU
,
XactSLRU
)
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PG_LWLOCKTRANCHE
(
PARALLEL_VACUUM_DSA
,
ParallelVacuumDSA
)
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PG_LWLOCKTRANCHE
(
AIO_URING_COMPLETION
,
AioUringCompletion
)
PG_LWLOCK
#define PG_LWLOCK(id, lockname)
PG_LWLOCKTRANCHE
#define PG_LWLOCKTRANCHE(id, lockname)
fb
static int fb(int x)
Definition
preproc-init.c:92
ShmemIndex
static HTAB * ShmemIndex
Definition
shmem.c:93
BackgroundWorker
Definition
bgworker.h:97
LogicalRepWorker
Definition
worker_internal.h:39
SerialControlData
Definition
predicate.c:346
TwoPhaseState
static TwoPhaseStateData * TwoPhaseState
Definition
twophase.c:189
ControlFile
static ControlFileData * ControlFile
Definition
xlog.c:576
src
include
storage
lwlocklist.h
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