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d1e027221d
In addition, add support for a "payload" string to be passed along with each notify event. This implementation should be significantly more efficient than the old one, and is also more compatible with Hot Standby usage. There is not yet any facility for HS slaves to receive notifications generated on the master, although such a thing is possible in future. Joachim Wieland, reviewed by Jeff Davis; also hacked on by me.
40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
/*-------------------------------------------------------------------------
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*
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* twophase_rmgr.h
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* Two-phase-commit resource managers definition
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*
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*
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* Portions Copyright (c) 1996-2010, 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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* $PostgreSQL: pgsql/src/include/access/twophase_rmgr.h,v 1.12 2010/02/16 22:34:50 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef TWOPHASE_RMGR_H
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#define TWOPHASE_RMGR_H
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typedef void (*TwoPhaseCallback) (TransactionId xid, uint16 info,
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void *recdata, uint32 len);
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typedef uint8 TwoPhaseRmgrId;
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/*
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* Built-in resource managers
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*/
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#define TWOPHASE_RM_END_ID 0
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#define TWOPHASE_RM_LOCK_ID 1
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#define TWOPHASE_RM_PGSTAT_ID 2
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#define TWOPHASE_RM_MULTIXACT_ID 3
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#define TWOPHASE_RM_MAX_ID TWOPHASE_RM_MULTIXACT_ID
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extern const TwoPhaseCallback twophase_recover_callbacks[];
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extern const TwoPhaseCallback twophase_postcommit_callbacks[];
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extern const TwoPhaseCallback twophase_postabort_callbacks[];
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extern const TwoPhaseCallback twophase_standby_recover_callbacks[];
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extern void RegisterTwoPhaseRecord(TwoPhaseRmgrId rmid, uint16 info,
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const void *data, uint32 len);
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#endif /* TWOPHASE_RMGR_H */
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