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- /*-------------------------------------------------------------------------
- *
- * twophase.h
- * Two-phase-commit related declarations.
- *
- *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
- * Portions Copyright (c) 1994, Regents of the University of California
- *
- * src/include/access/twophase.h
- *
- *-------------------------------------------------------------------------
- */
- #ifndef TWOPHASE_H
- #define TWOPHASE_H
-
- #include "access/xlogdefs.h"
- #include "access/xact.h"
- #include "datatype/timestamp.h"
- #include "storage/lock.h"
-
- /*
- * GlobalTransactionData is defined in twophase.c; other places have no
- * business knowing the internal definition.
- */
- typedef struct GlobalTransactionData *GlobalTransaction;
-
- /* GUC variable */
- extern PGDLLIMPORT int max_prepared_xacts;
-
- extern Size TwoPhaseShmemSize(void);
- extern void TwoPhaseShmemInit(void);
-
- extern void AtAbort_Twophase(void);
- extern void PostPrepare_Twophase(void);
-
- extern PGPROC *TwoPhaseGetDummyProc(TransactionId xid, bool lock_held);
- extern BackendId TwoPhaseGetDummyBackendId(TransactionId xid, bool lock_held);
-
- extern GlobalTransaction MarkAsPreparing(TransactionId xid, const char *gid,
- TimestampTz prepared_at,
- Oid owner, Oid databaseid);
-
- extern void StartPrepare(GlobalTransaction gxact);
- extern void EndPrepare(GlobalTransaction gxact);
- extern bool StandbyTransactionIdIsPrepared(TransactionId xid);
-
- extern TransactionId PrescanPreparedTransactions(TransactionId **xids_p,
- int *nxids_p);
- extern void ParsePrepareRecord(uint8 info, char *xlrec,
- xl_xact_parsed_prepare *parsed);
- extern void StandbyRecoverPreparedTransactions(void);
- extern void RecoverPreparedTransactions(void);
-
- extern void CheckPointTwoPhase(XLogRecPtr redo_horizon);
-
- extern void FinishPreparedTransaction(const char *gid, bool isCommit);
-
- extern void PrepareRedoAdd(char *buf, XLogRecPtr start_lsn,
- XLogRecPtr end_lsn, RepOriginId origin_id);
- extern void PrepareRedoRemove(TransactionId xid, bool giveWarning);
- extern void restoreTwoPhaseData(void);
- #endif /* TWOPHASE_H */
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