codekingpro/portable-devtools

1/*-------------------------------------------------------------------------2 *3 * procarray.h4 *	  POSTGRES process array definitions.5 *6 *7 * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group8 * Portions Copyright (c) 1994, Regents of the University of California9 *10 * src/include/storage/procarray.h11 *12 *-------------------------------------------------------------------------13 */14#ifndef PROCARRAY_H15#define PROCARRAY_H16 17#include "storage/lock.h"18#include "storage/standby.h"19#include "utils/relcache.h"20#include "utils/snapshot.h"21 22 23extern Size ProcArrayShmemSize(void);24extern void CreateSharedProcArray(void);25extern void ProcArrayAdd(PGPROC *proc);26extern void ProcArrayRemove(PGPROC *proc, TransactionId latestXid);27 28extern void ProcArrayEndTransaction(PGPROC *proc, TransactionId latestXid);29extern void ProcArrayClearTransaction(PGPROC *proc);30 31extern void ProcArrayInitRecovery(TransactionId initializedUptoXID);32extern void ProcArrayApplyRecoveryInfo(RunningTransactions running);33extern void ProcArrayApplyXidAssignment(TransactionId topxid,34										int nsubxids, TransactionId *subxids);35 36extern void RecordKnownAssignedTransactionIds(TransactionId xid);37extern void ExpireTreeKnownAssignedTransactionIds(TransactionId xid,38												  int nsubxids, TransactionId *subxids,39												  TransactionId max_xid);40extern void ExpireAllKnownAssignedTransactionIds(void);41extern void ExpireOldKnownAssignedTransactionIds(TransactionId xid);42extern void KnownAssignedTransactionIdsIdleMaintenance(void);43 44extern int	GetMaxSnapshotXidCount(void);45extern int	GetMaxSnapshotSubxidCount(void);46 47extern Snapshot GetSnapshotData(Snapshot snapshot);48 49extern bool ProcArrayInstallImportedXmin(TransactionId xmin,50										 VirtualTransactionId *sourcevxid);51extern bool ProcArrayInstallRestoredXmin(TransactionId xmin, PGPROC *proc);52 53extern RunningTransactions GetRunningTransactionData(void);54 55extern bool TransactionIdIsInProgress(TransactionId xid);56extern bool TransactionIdIsActive(TransactionId xid);57extern TransactionId GetOldestNonRemovableTransactionId(Relation rel);58extern TransactionId GetOldestTransactionIdConsideredRunning(void);59extern TransactionId GetOldestActiveTransactionId(void);60extern TransactionId GetOldestSafeDecodingTransactionId(bool catalogOnly);61extern void GetReplicationHorizons(TransactionId *xmin, TransactionId *catalog_xmin);62 63extern VirtualTransactionId *GetVirtualXIDsDelayingChkpt(int *nvxids, int type);64extern bool HaveVirtualXIDsDelayingChkpt(VirtualTransactionId *vxids,65										 int nvxids, int type);66 67extern PGPROC *BackendPidGetProc(int pid);68extern PGPROC *BackendPidGetProcWithLock(int pid);69extern int	BackendXidGetPid(TransactionId xid);70extern bool IsBackendPid(int pid);71 72extern VirtualTransactionId *GetCurrentVirtualXIDs(TransactionId limitXmin,73												   bool excludeXmin0, bool allDbs, int excludeVacuum,74												   int *nvxids);75extern VirtualTransactionId *GetConflictingVirtualXIDs(TransactionId limitXmin, Oid dbOid);76extern pid_t CancelVirtualTransaction(VirtualTransactionId vxid, ProcSignalReason sigmode);77extern pid_t SignalVirtualTransaction(VirtualTransactionId vxid, ProcSignalReason sigmode,78									  bool conflictPending);79 80extern bool MinimumActiveBackends(int min);81extern int	CountDBBackends(Oid databaseid);82extern int	CountDBConnections(Oid databaseid);83extern void CancelDBBackends(Oid databaseid, ProcSignalReason sigmode, bool conflictPending);84extern int	CountUserBackends(Oid roleid);85extern bool CountOtherDBBackends(Oid databaseId,86								 int *nbackends, int *nprepared);87extern void TerminateOtherDBBackends(Oid databaseId);88 89extern void XidCacheRemoveRunningXids(TransactionId xid,90									  int nxids, const TransactionId *xids,91									  TransactionId latestXid);92 93extern void ProcArraySetReplicationSlotXmin(TransactionId xmin,94											TransactionId catalog_xmin, bool already_locked);95 96extern void ProcArrayGetReplicationSlotXmin(TransactionId *xmin,97											TransactionId *catalog_xmin);98 99#endif							/* PROCARRAY_H */100