PostgreSQL Source Code  git master
Data Fields
PGPROC Struct Reference

#include <proc.h>

Data Fields

SHM_QUEUE links
 
PGPROC ** procgloballist
 
PGSemaphore sem
 
ProcWaitStatus waitStatus
 
Latch procLatch
 
TransactionId xid
 
TransactionId xmin
 
LocalTransactionId lxid
 
int pid
 
int pgxactoff
 
int pgprocno
 
BackendId backendId
 
Oid databaseId
 
Oid roleId
 
Oid tempNamespaceId
 
bool isBackgroundWorker
 
bool recoveryConflictPending
 
bool lwWaiting
 
uint8 lwWaitMode
 
proclist_node lwWaitLink
 
proclist_node cvWaitLink
 
LOCK * waitLock
 
PROCLOCK * waitProcLock
 
LOCKMODE waitLockMode
 
LOCKMASK heldLocks
 
pg_atomic_uint64 waitStart
 
bool delayChkpt
 
uint8 statusFlags
 
XLogRecPtr waitLSN
 
int syncRepState
 
SHM_QUEUE syncRepLinks
 
SHM_QUEUE myProcLocks [NUM_LOCK_PARTITIONS]
 
XidCacheStatus subxidStatus
 
struct XidCache subxids
 
bool procArrayGroupMember
 
pg_atomic_uint32 procArrayGroupNext
 
TransactionId procArrayGroupMemberXid
 
uint32 wait_event_info
 
bool clogGroupMember
 
pg_atomic_uint32 clogGroupNext
 
TransactionId clogGroupMemberXid
 
XidStatus clogGroupMemberXidStatus
 
int clogGroupMemberPage
 
XLogRecPtr clogGroupMemberLsn
 
LWLock fpInfoLock
 
uint64 fpLockBits
 
Oid fpRelId [FP_LOCK_SLOTS_PER_BACKEND]
 
bool fpVXIDLock
 
LocalTransactionId fpLocalTransactionId
 
PGPROC * lockGroupLeader
 
dlist_head lockGroupMembers
 
dlist_node lockGroupLink
 

Detailed Description

Definition at line 124 of file proc.h.

Field Documentation

◆ backendId

BackendId PGPROC::backendId

Definition at line 156 of file proc.h.

Referenced by ExportSnapshot(), GetLockStatusData(), GetSingleProcBlockerStatusData(), InitAuxiliaryProcess(), InitProcess(), log_line_prefix(), MarkAsPreparingGuts(), pg_log_backend_memory_contexts(), ProcArrayInstallImportedXmin(), SharedInvalBackendInit(), StartTransaction(), VirtualXactLock(), VirtualXactLockTableCleanup(), VirtualXactLockTableInsert(), write_csvlog(), and write_jsonlog().

◆ clogGroupMember

bool PGPROC::clogGroupMember

Definition at line 232 of file proc.h.

Referenced by InitProcess(), and TransactionGroupUpdateXidStatus().

◆ clogGroupMemberLsn

XLogRecPtr PGPROC::clogGroupMemberLsn

Definition at line 239 of file proc.h.

Referenced by InitProcess(), and TransactionGroupUpdateXidStatus().

◆ clogGroupMemberPage

int PGPROC::clogGroupMemberPage

Definition at line 237 of file proc.h.

Referenced by InitProcess(), and TransactionGroupUpdateXidStatus().

◆ clogGroupMemberXid

TransactionId PGPROC::clogGroupMemberXid

Definition at line 234 of file proc.h.

Referenced by InitProcess(), and TransactionGroupUpdateXidStatus().

◆ clogGroupMemberXidStatus

XidStatus PGPROC::clogGroupMemberXidStatus

Definition at line 235 of file proc.h.

Referenced by InitProcess(), and TransactionGroupUpdateXidStatus().

◆ clogGroupNext

pg_atomic_uint32 PGPROC::clogGroupNext

Definition at line 233 of file proc.h.

Referenced by InitProcess(), and TransactionGroupUpdateXidStatus().

◆ cvWaitLink

proclist_node PGPROC::cvWaitLink

Definition at line 178 of file proc.h.

◆ databaseId

Oid PGPROC::databaseId

Definition at line 157 of file proc.h.

Referenced by CancelDBBackends(), checkTempNamespaceStatus(), ComputeXidHorizons(), CountDBBackends(), CountDBConnections(), CountOtherDBBackends(), FastPathTransferRelationLocks(), GetConflictingVirtualXIDs(), GetCurrentVirtualXIDs(), GetLockConflicts(), GetLockStatusData(), InitAuxiliaryProcess(), InitPostgres(), InitProcess(), LockGXact(), MarkAsPreparingGuts(), pg_prepared_xact(), ProcArrayInstallImportedXmin(), ProcArrayInstallRestoredXmin(), StartPrepare(), and TerminateOtherDBBackends().

◆ delayChkpt

bool PGPROC::delayChkpt

Definition at line 190 of file proc.h.

Referenced by EndPrepare(), GetVirtualXIDsDelayingChkpt(), HaveVirtualXIDsDelayingChkpt(), InitAuxiliaryProcess(), InitProcess(), MarkAsPreparingGuts(), MarkBufferDirtyHint(), ProcArrayClearTransaction(), ProcArrayEndTransaction(), ProcArrayEndTransactionInternal(), RecordTransactionCommit(), RecordTransactionCommitPrepared(), TruncateMultiXact(), and XLogSaveBufferForHint().

◆ fpInfoLock

LWLock PGPROC::fpInfoLock

Definition at line 243 of file proc.h.

Referenced by FastPathGetRelationLockEntry(), FastPathTransferRelationLocks(), GetLockConflicts(), GetLockStatusData(), LockAcquireExtended(), LockRelease(), LockReleaseAll(), VirtualXactLock(), VirtualXactLockTableCleanup(), and VirtualXactLockTableInsert().

◆ fpLocalTransactionId

LocalTransactionId PGPROC::fpLocalTransactionId

Definition at line 247 of file proc.h.

Referenced by GetLockStatusData(), InitAuxiliaryProcess(), InitProcess(), VirtualXactLock(), VirtualXactLockTableCleanup(), and VirtualXactLockTableInsert().

◆ fpLockBits

uint64 PGPROC::fpLockBits

Definition at line 244 of file proc.h.

◆ fpRelId

Oid PGPROC::fpRelId[FP_LOCK_SLOTS_PER_BACKEND]

Definition at line 245 of file proc.h.

Referenced by FastPathGetRelationLockEntry(), FastPathGrantRelationLock(), FastPathTransferRelationLocks(), FastPathUnGrantRelationLock(), GetLockConflicts(), and GetLockStatusData().

◆ fpVXIDLock

bool PGPROC::fpVXIDLock

Definition at line 246 of file proc.h.

Referenced by GetLockStatusData(), InitAuxiliaryProcess(), InitProcess(), VirtualXactLock(), VirtualXactLockTableCleanup(), and VirtualXactLockTableInsert().

◆ heldLocks

LOCKMASK PGPROC::heldLocks

Definition at line 185 of file proc.h.

Referenced by LockAcquireExtended(), and ProcSleep().

◆ isBackgroundWorker

bool PGPROC::isBackgroundWorker

Definition at line 163 of file proc.h.

Referenced by CountDBConnections(), CountUserBackends(), InitAuxiliaryProcess(), InitProcess(), and MarkAsPreparingGuts().

◆ links

SHM_QUEUE PGPROC::links

Definition at line 127 of file proc.h.

Referenced by CheckDeadLock(), DeadLockCheck(), FindLockCycleRecurse(), FindLockCycleRecurseMember(), GetSingleProcBlockerStatusData(), HaveNFreeProcs(), InitAuxiliaryProcess(), InitProcess(), InitProcGlobal(), LockErrorCleanup(), MarkAsPreparingGuts(), ProcKill(), ProcLockWakeup(), ProcSleep(), ProcWakeup(), RemoveFromWaitQueue(), and TopoSort().

◆ lockGroupLeader

PGPROC* PGPROC::lockGroupLeader

Definition at line 254 of file proc.h.

Referenced by BecomeLockGroupLeader(), BecomeLockGroupMember(), FindLockCycleRecurse(), FindLockCycleRecurseMember(), GetBlockerStatusData(), InitAuxiliaryProcess(), InitProcess(), lock_twophase_recover(), LockCheckConflicts(), log_line_prefix(), pg_stat_get_activity(), PostPrepare_Locks(), ProcKill(), ProcSleep(), SetupLockInTable(), TopoSort(), write_csvlog(), and write_jsonlog().

◆ lockGroupLink

dlist_node PGPROC::lockGroupLink

Definition at line 256 of file proc.h.

Referenced by BecomeLockGroupLeader(), BecomeLockGroupMember(), and ProcKill().

◆ lockGroupMembers

dlist_head PGPROC::lockGroupMembers

Definition at line 255 of file proc.h.

Referenced by BecomeLockGroupLeader(), BecomeLockGroupMember(), FindLockCycleRecurse(), GetBlockerStatusData(), InitAuxiliaryProcess(), InitProcess(), and ProcKill().

◆ lwWaiting

bool PGPROC::lwWaiting

Definition at line 173 of file proc.h.

Referenced by InitAuxiliaryProcess(), InitProcess(), LWLockAcquire(), LWLockAcquireOrWait(), LWLockDequeueSelf(), LWLockQueueSelf(), LWLockUpdateVar(), LWLockWaitForVar(), LWLockWakeup(), and MarkAsPreparingGuts().

◆ lwWaitLink

proclist_node PGPROC::lwWaitLink

Definition at line 175 of file proc.h.

◆ lwWaitMode

uint8 PGPROC::lwWaitMode

Definition at line 174 of file proc.h.

Referenced by InitAuxiliaryProcess(), InitProcess(), LWLockQueueSelf(), LWLockUpdateVar(), LWLockWakeup(), and MarkAsPreparingGuts().

◆ lxid

LocalTransactionId PGPROC::lxid

Definition at line 146 of file proc.h.

Referenced by AbortTransaction(), CommitTransaction(), exec_eval_simple_expr(), exec_simple_check_plan(), exec_stmt_call(), ExportSnapshot(), fmgr_sql(), get_cast_hashentry(), GetLockStatusData(), GetSingleProcBlockerStatusData(), GetStableLatestTransactionId(), init_sql_fcache(), InitAuxiliaryProcess(), InitProcess(), lock_and_open_sequence(), log_line_prefix(), MarkAsPreparingGuts(), ProcArrayClearTransaction(), ProcArrayEndTransaction(), ProcArrayEndTransactionInternal(), ProcArrayInstallImportedXmin(), StartTransaction(), write_csvlog(), and write_jsonlog().

◆ myProcLocks

SHM_QUEUE PGPROC::myProcLocks[NUM_LOCK_PARTITIONS]

Definition at line 211 of file proc.h.

Referenced by InitAuxiliaryProcess(), InitProcess(), lock_twophase_recover(), LockReleaseAll(), MarkAsPreparingGuts(), PostPrepare_Locks(), ProcKill(), and SetupLockInTable().

◆ pgprocno

int PGPROC::pgprocno

Definition at line 153 of file proc.h.

Referenced by BackgroundWriterMain(), ConditionVariableBroadcast(), ConditionVariableCancelSleep(), ConditionVariablePrepareToSleep(), ConditionVariableTimedSleep(), GetSerializableTransactionSnapshotInt(), InitProcGlobal(), LockBufferForCleanup(), LWLockDequeueSelf(), LWLockQueueSelf(), MarkAsPreparingGuts(), PgArchiverMain(), ProcArrayAdd(), ProcArrayGroupClearXid(), TransactionGroupUpdateXidStatus(), TwoPhaseShmemInit(), UnlockBuffers(), and WALInsertLockAcquire().

◆ pgxactoff

int PGPROC::pgxactoff

Definition at line 151 of file proc.h.

Referenced by GetNewTransactionId(), GetSnapshotData(), ProcArrayAdd(), ProcArrayClearTransaction(), ProcArrayEndTransaction(), ProcArrayEndTransactionInternal(), ProcArrayInstallRestoredXmin(), ProcArrayRemove(), ProcSleep(), ReplicationSlotRelease(), set_indexsafe_procflags(), StartupDecodingContext(), TransactionIdIsInProgress(), vacuum_rel(), and XidCacheRemoveRunningXids().

◆ pid

int PGPROC::pid

Definition at line 149 of file proc.h.

Referenced by autovac_balance_cost(), AuxiliaryPidGetProc(), AuxiliaryProcKill(), BackendPidGetProcWithLock(), BackendXidGetPid(), BecomeLockGroupMember(), CancelDBBackends(), CountDBBackends(), CountDBConnections(), CountOtherDBBackends(), CountUserBackends(), FindLockCycleRecurseMember(), GetConflictingVirtualXIDs(), GetLockStatusData(), GetSingleProcBlockerStatusData(), InitAuxiliaryProcess(), InitProcess(), log_line_prefix(), logicalrep_worker_stop(), LogRecoveryConflict(), MarkAsPreparingGuts(), MinimumActiveBackends(), pg_stat_get_activity(), pg_stat_get_subscription(), ProcArrayRemove(), ProcSleep(), RememberSimpleDeadLock(), SignalVirtualTransaction(), TerminateOtherDBBackends(), TransactionIdIsActive(), WaitForLockersMultiple(), WaitForOlderSnapshots(), write_csvlog(), and write_jsonlog().

◆ procArrayGroupMember

bool PGPROC::procArrayGroupMember

Definition at line 219 of file proc.h.

Referenced by InitProcess(), and ProcArrayGroupClearXid().

◆ procArrayGroupMemberXid

TransactionId PGPROC::procArrayGroupMemberXid

Definition at line 227 of file proc.h.

Referenced by InitProcess(), and ProcArrayGroupClearXid().

◆ procArrayGroupNext

pg_atomic_uint32 PGPROC::procArrayGroupNext

Definition at line 221 of file proc.h.

Referenced by InitProcess(), and ProcArrayGroupClearXid().

◆ procgloballist

PGPROC** PGPROC::procgloballist

Definition at line 128 of file proc.h.

Referenced by InitProcess(), InitProcGlobal(), and ProcKill().

◆ procLatch

Latch PGPROC::procLatch

Definition at line 133 of file proc.h.

Referenced by AuxiliaryProcKill(), CheckpointerMain(), ConditionVariableBroadcast(), ConditionVariableSignal(), InitAuxiliaryProcess(), InitProcess(), InitWalSenderSlot(), logicalrep_worker_wakeup_ptr(), PgArchWakeup(), ProcKill(), ProcSendSignal(), ProcWakeup(), shm_mq_detach_internal(), shm_mq_inc_bytes_read(), shm_mq_send_bytes(), shm_mq_sendv(), shm_mq_set_receiver(), shm_mq_set_sender(), StrategyGetBuffer(), SwitchBackToLocalLatch(), SwitchToSharedLatch(), SyncRepWakeQueue(), test_shm_mq_main(), WalReceiverMain(), and WalWriterMain().

◆ recoveryConflictPending

bool PGPROC::recoveryConflictPending

Definition at line 170 of file proc.h.

Referenced by CancelDBBackends(), errdetail_abort(), InitProcess(), ProcArrayClearTransaction(), ProcArrayEndTransaction(), ProcArrayEndTransactionInternal(), RecoveryConflictInterrupt(), and SignalVirtualTransaction().

◆ roleId

Oid PGPROC::roleId

Definition at line 158 of file proc.h.

Referenced by CountUserBackends(), InitAuxiliaryProcess(), InitializeSessionUserId(), InitProcess(), MarkAsPreparingGuts(), pg_signal_backend(), and TerminateOtherDBBackends().

◆ sem

PGSemaphore PGPROC::sem

Definition at line 130 of file proc.h.

Referenced by InitAuxiliaryProcess(), InitProcess(), InitProcGlobal(), LWLockAcquire(), LWLockAcquireOrWait(), LWLockDequeueSelf(), LWLockUpdateVar(), LWLockWaitForVar(), LWLockWakeup(), ProcArrayGroupClearXid(), and TransactionGroupUpdateXidStatus().

◆ statusFlags

uint8 PGPROC::statusFlags

Definition at line 192 of file proc.h.

Referenced by _bt_parallel_build_main(), FindLockCycleRecurseMember(), InitAuxiliaryProcess(), InitProcess(), MarkAsPreparingGuts(), parallel_vacuum_main(), ProcArrayAdd(), ProcArrayClearTransaction(), ProcArrayEndTransaction(), ProcArrayEndTransactionInternal(), ProcArrayInstallRestoredXmin(), ReplicationSlotRelease(), set_indexsafe_procflags(), StartupDecodingContext(), and vacuum_rel().

◆ subxids

struct XidCache PGPROC::subxids

Definition at line 213 of file proc.h.

Referenced by GetNewTransactionId(), GetRunningTransactionData(), GetSnapshotData(), GXactLoadSubxactData(), TransactionGroupUpdateXidStatus(), TransactionIdIsInProgress(), TransactionIdSetPageStatus(), and XidCacheRemoveRunningXids().

◆ subxidStatus

XidCacheStatus PGPROC::subxidStatus

Definition at line 213 of file proc.h.

Referenced by GetNewTransactionId(), GXactLoadSubxactData(), MarkAsPreparingGuts(), ProcArrayAdd(), ProcArrayClearTransaction(), ProcArrayEndTransaction(), ProcArrayEndTransactionInternal(), TransactionGroupUpdateXidStatus(), TransactionIdSetPageStatus(), and XidCacheRemoveRunningXids().

◆ syncRepLinks

SHM_QUEUE PGPROC::syncRepLinks

Definition at line 204 of file proc.h.

Referenced by InitProcess(), SyncRepCancelWait(), SyncRepCleanupAtProcExit(), SyncRepQueueInsert(), SyncRepWaitForLSN(), and SyncRepWakeQueue().

◆ syncRepState

int PGPROC::syncRepState

Definition at line 203 of file proc.h.

Referenced by InitProcess(), SyncRepCancelWait(), SyncRepWaitForLSN(), and SyncRepWakeQueue().

◆ tempNamespaceId

Oid PGPROC::tempNamespaceId

Definition at line 160 of file proc.h.

Referenced by AtEOSubXact_Namespace(), AtEOXact_Namespace(), checkTempNamespaceStatus(), InitAuxiliaryProcess(), InitProcess(), InitTempTableNamespace(), and MarkAsPreparingGuts().

◆ wait_event_info

uint32 PGPROC::wait_event_info

Definition at line 229 of file proc.h.

Referenced by InitAuxiliaryProcess(), InitProcess(), pg_stat_get_activity(), pg_stat_get_backend_wait_event(), pg_stat_get_backend_wait_event_type(), and pgstat_report_activity().

◆ waitLock

LOCK* PGPROC::waitLock

Definition at line 182 of file proc.h.

Referenced by CheckDeadLock(), FindLockCycleRecurse(), FindLockCycleRecurseMember(), GetLockStatusData(), GetSingleProcBlockerStatusData(), InitAuxiliaryProcess(), InitProcess(), MarkAsPreparingGuts(), MinimumActiveBackends(), ProcSleep(), ProcWakeup(), RememberSimpleDeadLock(), RemoveFromWaitQueue(), and TopoSort().

◆ waitLockMode

LOCKMODE PGPROC::waitLockMode

Definition at line 184 of file proc.h.

Referenced by FindLockCycleRecurseMember(), GetLockStatusData(), GetSingleProcBlockerStatusData(), ProcLockWakeup(), ProcSleep(), RememberSimpleDeadLock(), and RemoveFromWaitQueue().

◆ waitLSN

XLogRecPtr PGPROC::waitLSN

Definition at line 202 of file proc.h.

Referenced by InitProcess(), SyncRepQueueInsert(), SyncRepWaitForLSN(), and SyncRepWakeQueue().

◆ waitProcLock

PROCLOCK* PGPROC::waitProcLock

Definition at line 183 of file proc.h.

Referenced by InitAuxiliaryProcess(), InitProcess(), MarkAsPreparingGuts(), ProcLockWakeup(), ProcSleep(), ProcWakeup(), and RemoveFromWaitQueue().

◆ waitStart

pg_atomic_uint64 PGPROC::waitStart

Definition at line 187 of file proc.h.

Referenced by GetLockStatusData(), InitAuxiliaryProcess(), InitProcess(), MarkAsPreparingGuts(), ProcSleep(), ProcWakeup(), and ResolveRecoveryConflictWithLock().

◆ waitStatus

ProcWaitStatus PGPROC::waitStatus

Definition at line 131 of file proc.h.

Referenced by InitAuxiliaryProcess(), InitProcess(), LockErrorCleanup(), MarkAsPreparingGuts(), ProcSleep(), ProcWakeup(), and RemoveFromWaitQueue().

◆ xid

TransactionId PGPROC::xid

Definition at line 136 of file proc.h.

Referenced by BackendIdGetTransactionIds(), ComputeXidHorizons(), GetNewTransactionId(), GetRunningTransactionLocks(), GetSnapshotData(), InitAuxiliaryProcess(), InitProcess(), MarkAsPreparingGuts(), MinimumActiveBackends(), pg_prepared_xact(), ProcArrayAdd(), ProcArrayClearTransaction(), ProcArrayEndTransaction(), ProcArrayEndTransactionInternal(), ProcArrayGroupClearXid(), set_indexsafe_procflags(), TransactionIdSetPageStatus(), and VirtualXactLock().

◆ xmin

TransactionId PGPROC::xmin

Definition at line 141 of file proc.h.

Referenced by AtEOXact_Snapshot(), BackendIdGetTransactionIds(), ComputeXidHorizons(), DefineIndex(), GetConflictingVirtualXIDs(), GetCurrentVirtualXIDs(), GetSnapshotData(), GetSnapshotDataReuse(), InitAuxiliaryProcess(), InitProcess(), MarkAsPreparingGuts(), PhysicalReplicationSlotNewXmin(), ProcArrayClearTransaction(), ProcArrayEndTransaction(), ProcArrayEndTransactionInternal(), ProcArrayInstallImportedXmin(), ProcArrayInstallRestoredXmin(), ProcessStandbyHSFeedbackMessage(), set_indexsafe_procflags(), SnapBuildInitialSnapshot(), SnapshotResetXmin(), and TransactionIdLimitedForOldSnapshots().

The documentation for this struct was generated from the following file: