diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:46:48 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:46:48 +0000 |
commit | 311bcfc6b3acdd6fd152798c7f287ddf74fa2a98 (patch) | |
tree | 0ec307299b1dada3701e42f4ca6eda57d708261e /src/include/access/xlogprefetcher.h | |
parent | Initial commit. (diff) | |
download | postgresql-15-upstream.tar.xz postgresql-15-upstream.zip |
Adding upstream version 15.4.upstream/15.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/include/access/xlogprefetcher.h')
-rw-r--r-- | src/include/access/xlogprefetcher.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/include/access/xlogprefetcher.h b/src/include/access/xlogprefetcher.h new file mode 100644 index 0000000..fdd67fc --- /dev/null +++ b/src/include/access/xlogprefetcher.h @@ -0,0 +1,55 @@ +/*------------------------------------------------------------------------- + * + * xlogprefetcher.h + * Declarations for the recovery prefetching module. + * + * Portions Copyright (c) 2022, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * IDENTIFICATION + * src/include/access/xlogprefetcher.h + *------------------------------------------------------------------------- + */ +#ifndef XLOGPREFETCHER_H +#define XLOGPREFETCHER_H + +#include "access/xlogdefs.h" +#include "access/xlogreader.h" +#include "access/xlogrecord.h" + +/* GUCs */ +extern PGDLLIMPORT int recovery_prefetch; + +/* Possible values for recovery_prefetch */ +typedef enum +{ + RECOVERY_PREFETCH_OFF, + RECOVERY_PREFETCH_ON, + RECOVERY_PREFETCH_TRY +} RecoveryPrefetchValue; + +struct XLogPrefetcher; +typedef struct XLogPrefetcher XLogPrefetcher; + + +extern void XLogPrefetchReconfigure(void); + +extern size_t XLogPrefetchShmemSize(void); +extern void XLogPrefetchShmemInit(void); + +extern void XLogPrefetchResetStats(void); + +extern XLogPrefetcher *XLogPrefetcherAllocate(XLogReaderState *reader); +extern void XLogPrefetcherFree(XLogPrefetcher *prefetcher); + +extern XLogReaderState *XLogPrefetcherGetReader(XLogPrefetcher *prefetcher); + +extern void XLogPrefetcherBeginRead(XLogPrefetcher *prefetcher, + XLogRecPtr recPtr); + +extern XLogRecord *XLogPrefetcherReadRecord(XLogPrefetcher *prefetcher, + char **errmsg); + +extern void XLogPrefetcherComputeStats(XLogPrefetcher *prefetcher); + +#endif |