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Diffstat (limited to 'src/include/access/clog.h')
| -rw-r--r-- | src/include/access/clog.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/include/access/clog.h b/src/include/access/clog.h new file mode 100644 index 00000000000..4e44e8036cf --- /dev/null +++ b/src/include/access/clog.h @@ -0,0 +1,47 @@ +/* + * clog.h + * + * PostgreSQL transaction-commit-log manager + * + * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * $Id: clog.h,v 1.1 2001/08/25 18:52:42 tgl Exp $ + */ +#ifndef CLOG_H +#define CLOG_H + +#include "access/xlog.h" + +/* + * Possible transaction statuses --- note that all-zeroes is the initial + * state. + */ +typedef int XidStatus; + +#define TRANSACTION_STATUS_IN_PROGRESS 0x00 +#define TRANSACTION_STATUS_COMMITTED 0x01 +#define TRANSACTION_STATUS_ABORTED 0x02 +/* 0x03 is available without changing commit log space allocation */ + + +extern void TransactionIdSetStatus(TransactionId xid, XidStatus status); +extern XidStatus TransactionIdGetStatus(TransactionId xid); + +extern int CLOGShmemSize(void); +extern void CLOGShmemInit(void); +extern void BootStrapCLOG(void); +extern void StartupCLOG(void); +extern void ShutdownCLOG(void); +extern void CheckPointCLOG(void); +extern void ExtendCLOG(TransactionId newestXact); +extern void TruncateCLOG(TransactionId oldestXact); + +/* XLOG stuff */ +#define CLOG_ZEROPAGE 0x00 + +extern void clog_redo(XLogRecPtr lsn, XLogRecord *record); +extern void clog_undo(XLogRecPtr lsn, XLogRecord *record); +extern void clog_desc(char *buf, uint8 xl_info, char *rec); + +#endif /* CLOG_H */ |