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/*------------------------------------------------------------------------- * * twophase.h * Two-phase-commit related declarations. * * * Portions Copyright (c) 1996-2016, 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 "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 TransactionId TwoPhaseGetXidByVirtualXID(VirtualTransactionId vxid, bool *have_more); extern PGPROC *TwoPhaseGetDummyProc(TransactionId xid); extern BackendId TwoPhaseGetDummyBackendId(TransactionId xid); 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 StandbyRecoverPreparedTransactions(bool overwriteOK); extern void RecoverPreparedTransactions(void); extern void RecreateTwoPhaseFile(TransactionId xid, void *content, int len); extern void RemoveTwoPhaseFile(TransactionId xid, bool giveWarning); extern void CheckPointTwoPhase(XLogRecPtr redo_horizon); extern void FinishPreparedTransaction(const char *gid, bool isCommit); #endif /* TWOPHASE_H */