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29275b1d17
Reported-by: Michael Paquier Discussion: https://postgr.es/m/ZZKTDPxBBMt3C0J9@paquier.xyz Backpatch-through: 12
56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
/*-------------------------------------------------------------------------
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*
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* xlogprefetcher.h
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* Declarations for the recovery prefetching module.
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*
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* Portions Copyright (c) 2022-2024, 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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* IDENTIFICATION
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* src/include/access/xlogprefetcher.h
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*-------------------------------------------------------------------------
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*/
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#ifndef XLOGPREFETCHER_H
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#define XLOGPREFETCHER_H
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#include "access/xlogdefs.h"
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#include "access/xlogreader.h"
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#include "access/xlogrecord.h"
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/* GUCs */
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extern PGDLLIMPORT int recovery_prefetch;
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/* Possible values for recovery_prefetch */
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typedef enum
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{
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RECOVERY_PREFETCH_OFF,
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RECOVERY_PREFETCH_ON,
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RECOVERY_PREFETCH_TRY,
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} RecoveryPrefetchValue;
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struct XLogPrefetcher;
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typedef struct XLogPrefetcher XLogPrefetcher;
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extern void XLogPrefetchReconfigure(void);
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extern size_t XLogPrefetchShmemSize(void);
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extern void XLogPrefetchShmemInit(void);
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extern void XLogPrefetchResetStats(void);
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extern XLogPrefetcher *XLogPrefetcherAllocate(XLogReaderState *reader);
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extern void XLogPrefetcherFree(XLogPrefetcher *prefetcher);
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extern XLogReaderState *XLogPrefetcherGetReader(XLogPrefetcher *prefetcher);
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extern void XLogPrefetcherBeginRead(XLogPrefetcher *prefetcher,
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XLogRecPtr recPtr);
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extern XLogRecord *XLogPrefetcherReadRecord(XLogPrefetcher *prefetcher,
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char **errmsg);
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extern void XLogPrefetcherComputeStats(XLogPrefetcher *prefetcher);
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#endif
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