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/*-------------------------------------------------------------------------
*
* clustermon.h
* header file for cluster monitor process
*
*
* Portions Copyright (c) 2015, 2ndQuadrant Ltd
* Portions Copyright (c) 1996-2015, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
* Portions Copyright (c) 2010-2012 Postgres-XC Development Group
*
* src/include/postmaster/autovacuum.h
*
*-------------------------------------------------------------------------
*/
#ifndef CLUSTERMON_H
#define CLUSTERMON_H
#include "storage/s_lock.h"
#include "gtm/gtm_c.h"
typedef struct
{
slock_t mutex;
GlobalTransactionId reported_recent_global_xmin;
GlobalTransactionId reporting_recent_global_xmin;
GlobalTransactionId gtm_recent_global_xmin;
} ClusterMonitorCtlData;
extern void ClusterMonitorShmemInit(void);
extern Size ClusterMonitorShmemSize(void);
/* Status inquiry functions */
extern bool IsClusterMonitorProcess(void);
/* Functions to start cluster monitor process, called from postmaster */
int ClusterMonitorInit(void);
extern int StartClusterMonitor(void);
extern GlobalTransactionId ClusterMonitorGetGlobalXmin(void);
extern void ClusterMonitorSetGlobalXmin(GlobalTransactionId xmin);
extern GlobalTransactionId ClusterMonitorGetReportingGlobalXmin(void);
#ifdef EXEC_BACKEND
extern void ClusterMonitorIAm(void);
#endif
extern int ClusterMonitorInit(void);
#endif /* CLUSTERMON_H */
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