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/*-------------------------------------------------------------------------
*
* syncrep.h
* Exports from replication/syncrep.c.
*
* Portions Copyright (c) 2010-2011, PostgreSQL Global Development Group
*
* IDENTIFICATION
* src/include/replication/syncrep.h
*
*-------------------------------------------------------------------------
*/
#ifndef _SYNCREP_H
#define _SYNCREP_H
#include "access/xlog.h"
#include "storage/proc.h"
#include "storage/shmem.h"
#include "storage/spin.h"
#include "utils/guc.h"
#define SyncRepRequested() \
(synchronous_replication && max_wal_senders > 0)
/* syncRepState */
#define SYNC_REP_NOT_WAITING 0
#define SYNC_REP_WAITING 1
#define SYNC_REP_WAIT_COMPLETE 2
#define SYNC_REP_MUST_DISCONNECT 3
/* user-settable parameters for synchronous replication */
extern bool synchronous_replication;
extern char *SyncRepStandbyNames;
/* called by user backend */
extern void SyncRepWaitForLSN(XLogRecPtr XactCommitLSN);
/* callback at backend exit */
extern void SyncRepCleanupAtProcExit(int code, Datum arg);
/* called by wal sender */
extern void SyncRepInitConfig(void);
extern void SyncRepReleaseWaiters(void);
/* called by various procs */
extern int SyncRepWakeQueue(bool all);
extern const char *assign_synchronous_standby_names(const char *newval, bool doit, GucSource source);
#endif /* _SYNCREP_H */
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