diff options
Diffstat (limited to 'src/include/access/multixact.h')
| -rw-r--r-- | src/include/access/multixact.h | 37 |
1 files changed, 33 insertions, 4 deletions
diff --git a/src/include/access/multixact.h b/src/include/access/multixact.h index 65d19704c4..2199b05f2c 100644 --- a/src/include/access/multixact.h +++ b/src/include/access/multixact.h @@ -6,16 +6,38 @@ * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/access/multixact.h,v 1.2 2005/05/03 19:42:41 tgl Exp $ + * $PostgreSQL: pgsql/src/include/access/multixact.h,v 1.3 2005/06/08 15:50:28 tgl Exp $ */ #ifndef MULTIXACT_H #define MULTIXACT_H +#include "access/xlog.h" + #define InvalidMultiXactId ((MultiXactId) 0) #define FirstMultiXactId ((MultiXactId) 1) #define MultiXactIdIsValid(multi) ((multi) != InvalidMultiXactId) +/* ---------------- + * multixact-related XLOG entries + * ---------------- + */ + +#define XLOG_MULTIXACT_ZERO_OFF_PAGE 0x00 +#define XLOG_MULTIXACT_ZERO_MEM_PAGE 0x10 +#define XLOG_MULTIXACT_CREATE_ID 0x20 + +typedef struct xl_multixact_create +{ + MultiXactId mid; /* new MultiXact's ID */ + MultiXactOffset moff; /* its starting offset in members file */ + int32 nxids; /* number of member XIDs */ + TransactionId xids[1]; /* VARIABLE LENGTH ARRAY */ +} xl_multixact_create; + +#define MinSizeOfMultiXactCreate offsetof(xl_multixact_create, xids) + + extern MultiXactId MultiXactIdCreate(TransactionId xid1, TransactionId xid2); extern MultiXactId MultiXactIdExpand(MultiXactId multi, TransactionId xid); extern bool MultiXactIdIsRunning(MultiXactId multi); @@ -29,9 +51,16 @@ extern void MultiXactShmemInit(void); extern void BootStrapMultiXact(void); extern void StartupMultiXact(void); extern void ShutdownMultiXact(void); -extern MultiXactId MultiXactGetCheckptMulti(bool is_shutdown); +extern void MultiXactGetCheckptMulti(bool is_shutdown, + MultiXactId *nextMulti, + MultiXactOffset *nextMultiOffset); extern void CheckPointMultiXact(void); -extern void MultiXactSetNextMXact(MultiXactId nextMulti); -extern void MultiXactAdvanceNextMXact(MultiXactId minMulti); +extern void MultiXactSetNextMXact(MultiXactId nextMulti, + MultiXactOffset nextMultiOffset); +extern void MultiXactAdvanceNextMXact(MultiXactId minMulti, + MultiXactOffset minMultiOffset); + +extern void multixact_redo(XLogRecPtr lsn, XLogRecord *record); +extern void multixact_desc(char *buf, uint8 xl_info, char *rec); #endif /* MULTIXACT_H */ |