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/*-------------------------------------------------------------------------
*
* barrier.h
*
* Definitions for the PITR barrier handling
*
*
* Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group
* Portions Copyright (c) 2010-2012 Postgres-XC Development Group
*
* src/include/pgxc/barrier.h
*
*-------------------------------------------------------------------------
*/
#ifndef PGXC_BARRIER_H
#define PGXC_BARRIER_H
#include "access/xlog.h"
#include "access/xlogdefs.h"
#define CREATE_BARRIER_PREPARE 'P'
#define CREATE_BARRIER_EXECUTE 'X'
#define CREATE_BARRIER_END 'E'
#define CREATE_BARRIER_PREPARE_DONE 'p'
#define CREATE_BARRIER_EXECUTE_DONE 'x'
typedef struct xl_barrier
{
char barrier_id[1]; /* variable length data follows */
} xl_barrier;
#define XLOG_BARRIER_CREATE 0x00
extern void ProcessCreateBarrierPrepare(const char *id);
extern void ProcessCreateBarrierEnd(const char *id);
extern void ProcessCreateBarrierExecute(const char *id);
extern void RequestBarrier(const char *id, char *completionTag);
extern void barrier_redo(XLogReaderState *record);
extern void barrier_desc(StringInfo buf, XLogReaderState *record);
extern const char *barrier_identify(uint8 info);
#endif
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