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/*------------------------------------------------------------------------- * * procarray.h * POSTGRES process array definitions. * * * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * src/include/storage/procarray.h * *------------------------------------------------------------------------- */ #ifndef PROCARRAY_H #define PROCARRAY_H #include "storage/standby.h" #include "utils/snapshot.h" extern Size ProcArrayShmemSize(void); extern void CreateSharedProcArray(void); extern void ProcArrayAdd(PGPROC *proc); extern void ProcArrayRemove(PGPROC *proc, TransactionId latestXid); extern void ProcArrayEndTransaction(PGPROC *proc, TransactionId latestXid); extern void ProcArrayClearTransaction(PGPROC *proc); extern void ProcArrayInitRecovery(TransactionId initializedUptoXID); extern void ProcArrayApplyRecoveryInfo(RunningTransactions running); extern void ProcArrayApplyXidAssignment(TransactionId topxid, int nsubxids, TransactionId *subxids); extern void RecordKnownAssignedTransactionIds(TransactionId xid); extern void ExpireTreeKnownAssignedTransactionIds(TransactionId xid, int nsubxids, TransactionId *subxids, TransactionId max_xid); extern void ExpireAllKnownAssignedTransactionIds(void); extern void ExpireOldKnownAssignedTransactionIds(TransactionId xid); extern int GetMaxSnapshotXidCount(void); extern int GetMaxSnapshotSubxidCount(void); extern Snapshot GetSnapshotData(Snapshot snapshot); extern bool ProcArrayInstallImportedXmin(TransactionId xmin, TransactionId sourcexid); extern RunningTransactions GetRunningTransactionData(void); extern bool TransactionIdIsInProgress(TransactionId xid); extern bool TransactionIdIsActive(TransactionId xid); extern TransactionId GetOldestXmin(bool allDbs, bool ignoreVacuum); extern TransactionId GetOldestActiveTransactionId(void); extern int GetTransactionsInCommit(TransactionId **xids_p); extern bool HaveTransactionsInCommit(TransactionId *xids, int nxids); extern PGPROC *BackendPidGetProc(int pid); extern int BackendXidGetPid(TransactionId xid); extern bool IsBackendPid(int pid); extern VirtualTransactionId *GetCurrentVirtualXIDs(TransactionId limitXmin, bool excludeXmin0, bool allDbs, int excludeVacuum, int *nvxids); extern VirtualTransactionId *GetConflictingVirtualXIDs(TransactionId limitXmin, Oid dbOid); extern pid_t CancelVirtualTransaction(VirtualTransactionId vxid, ProcSignalReason sigmode); extern bool MinimumActiveBackends(int min); extern int CountDBBackends(Oid databaseid); extern void CancelDBBackends(Oid databaseid, ProcSignalReason sigmode, bool conflictPending); extern int CountUserBackends(Oid roleid); extern bool CountOtherDBBackends(Oid databaseId, int *nbackends, int *nprepared); extern void XidCacheRemoveRunningXids(TransactionId xid, int nxids, const TransactionId *xids, TransactionId latestXid); #endif /* PROCARRAY_H */