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/*-------------------------------------------------------------------------
*
* waitlsn.h
* Declarations for LSN waiting routines.
*
* Copyright (c) 2024, PostgreSQL Global Development Group
*
* src/include/commands/waitlsn.h
*
*-------------------------------------------------------------------------
*/
#ifndef WAIT_LSN_H
#define WAIT_LSN_H
#include "postgres.h"
#include "port/atomics.h"
#include "storage/spin.h"
#include "tcop/dest.h"
/* Shared memory structures */
typedef struct WaitLSNProcInfo
{
int procnum;
XLogRecPtr waitLSN;
} WaitLSNProcInfo;
typedef struct WaitLSNState
{
pg_atomic_uint64 minLSN;
slock_t mutex;
int numWaitedProcs;
WaitLSNProcInfo procInfos[FLEXIBLE_ARRAY_MEMBER];
} WaitLSNState;
extern PGDLLIMPORT struct WaitLSNState *waitLSN;
extern void WaitForLSN(XLogRecPtr targetLSN, int64 timeout);
extern Size WaitLSNShmemSize(void);
extern void WaitLSNShmemInit(void);
extern void WaitLSNSetLatches(XLogRecPtr currentLSN);
extern void WaitLSNCleanup(void);
#endif /* WAIT_LSN_H */
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