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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:15:05 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:15:05 +0000 |
| commit | 46651ce6fe013220ed397add242004d764fc0153 (patch) | |
| tree | 6e5299f990f88e60174a1d3ae6e48eedd2688b2b /src/include/access/clog.h | |
| parent | Initial commit. (diff) | |
| download | postgresql-14-46651ce6fe013220ed397add242004d764fc0153.tar.xz postgresql-14-46651ce6fe013220ed397add242004d764fc0153.zip | |
Adding upstream version 14.5.upstream/14.5upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/include/access/clog.h')
| -rw-r--r-- | src/include/access/clog.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/include/access/clog.h b/src/include/access/clog.h new file mode 100644 index 0000000..39b8e4a --- /dev/null +++ b/src/include/access/clog.h @@ -0,0 +1,63 @@ +/* + * clog.h + * + * PostgreSQL transaction-commit-log manager + * + * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/access/clog.h + */ +#ifndef CLOG_H +#define CLOG_H + +#include "access/xlogreader.h" +#include "storage/sync.h" +#include "lib/stringinfo.h" + +/* + * Possible transaction statuses --- note that all-zeroes is the initial + * state. + * + * A "subcommitted" transaction is a committed subtransaction whose parent + * hasn't committed or aborted yet. + */ +typedef int XidStatus; + +#define TRANSACTION_STATUS_IN_PROGRESS 0x00 +#define TRANSACTION_STATUS_COMMITTED 0x01 +#define TRANSACTION_STATUS_ABORTED 0x02 +#define TRANSACTION_STATUS_SUB_COMMITTED 0x03 + +typedef struct xl_clog_truncate +{ + int pageno; + TransactionId oldestXact; + Oid oldestXactDb; +} xl_clog_truncate; + +extern void TransactionIdSetTreeStatus(TransactionId xid, int nsubxids, + TransactionId *subxids, XidStatus status, XLogRecPtr lsn); +extern XidStatus TransactionIdGetStatus(TransactionId xid, XLogRecPtr *lsn); + +extern Size CLOGShmemBuffers(void); +extern Size CLOGShmemSize(void); +extern void CLOGShmemInit(void); +extern void BootStrapCLOG(void); +extern void StartupCLOG(void); +extern void TrimCLOG(void); +extern void CheckPointCLOG(void); +extern void ExtendCLOG(TransactionId newestXact); +extern void TruncateCLOG(TransactionId oldestXact, Oid oldestxid_datoid); + +extern int clogsyncfiletag(const FileTag *ftag, char *path); + +/* XLOG stuff */ +#define CLOG_ZEROPAGE 0x00 +#define CLOG_TRUNCATE 0x10 + +extern void clog_redo(XLogReaderState *record); +extern void clog_desc(StringInfo buf, XLogReaderState *record); +extern const char *clog_identify(uint8 info); + +#endif /* CLOG_H */ |