66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
/*-------------------------------------------------------------------------
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*
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* twophase.h
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* Two-phase-commit related declarations.
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*
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*
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* Portions Copyright (c) 1996-2023, 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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* src/include/access/twophase.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef TWOPHASE_H
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#define TWOPHASE_H
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#include "access/xact.h"
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#include "access/xlogdefs.h"
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#include "datatype/timestamp.h"
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#include "storage/lock.h"
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/*
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* GlobalTransactionData is defined in twophase.c; other places have no
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* business knowing the internal definition.
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*/
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typedef struct GlobalTransactionData *GlobalTransaction;
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/* GUC variable */
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extern PGDLLIMPORT int max_prepared_xacts;
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extern Size TwoPhaseShmemSize(void);
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extern void TwoPhaseShmemInit(void);
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extern void AtAbort_Twophase(void);
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extern void PostPrepare_Twophase(void);
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extern TransactionId TwoPhaseGetXidByVirtualXID(VirtualTransactionId vxid,
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bool *have_more);
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extern PGPROC *TwoPhaseGetDummyProc(TransactionId xid, bool lock_held);
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extern BackendId TwoPhaseGetDummyBackendId(TransactionId xid, bool lock_held);
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extern GlobalTransaction MarkAsPreparing(TransactionId xid, const char *gid,
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TimestampTz prepared_at,
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Oid owner, Oid databaseid);
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extern void StartPrepare(GlobalTransaction gxact);
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extern void EndPrepare(GlobalTransaction gxact);
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extern bool StandbyTransactionIdIsPrepared(TransactionId xid);
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extern TransactionId PrescanPreparedTransactions(TransactionId **xids_p,
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int *nxids_p);
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extern void StandbyRecoverPreparedTransactions(void);
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extern void RecoverPreparedTransactions(void);
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extern void CheckPointTwoPhase(XLogRecPtr redo_horizon);
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extern void FinishPreparedTransaction(const char *gid, bool isCommit);
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extern void PrepareRedoAdd(char *buf, XLogRecPtr start_lsn,
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XLogRecPtr end_lsn, RepOriginId origin_id);
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extern void PrepareRedoRemove(TransactionId xid, bool giveWarning);
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extern void restoreTwoPhaseData(void);
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extern bool LookupGXact(const char *gid, XLogRecPtr prepare_end_lsn,
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TimestampTz origin_prepare_timestamp);
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#endif /* TWOPHASE_H */
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