73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
/*
|
|
* commit_ts.h
|
|
*
|
|
* PostgreSQL commit timestamp manager
|
|
*
|
|
* Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
* src/include/access/commit_ts.h
|
|
*/
|
|
#ifndef COMMIT_TS_H
|
|
#define COMMIT_TS_H
|
|
|
|
#include "access/xlog.h"
|
|
#include "datatype/timestamp.h"
|
|
#include "utils/guc.h"
|
|
|
|
|
|
extern PGDLLIMPORT bool track_commit_timestamp;
|
|
|
|
extern bool check_track_commit_timestamp(bool *newval, void **extra,
|
|
GucSource source);
|
|
|
|
typedef uint32 CommitTsNodeId;
|
|
#define InvalidCommitTsNodeId 0
|
|
|
|
extern void CommitTsSetDefaultNodeId(CommitTsNodeId nodeid);
|
|
extern CommitTsNodeId CommitTsGetDefaultNodeId(void);
|
|
extern void TransactionTreeSetCommitTsData(TransactionId xid, int nsubxids,
|
|
TransactionId *subxids, TimestampTz timestamp,
|
|
CommitTsNodeId nodeid, bool do_xlog);
|
|
extern bool TransactionIdGetCommitTsData(TransactionId xid,
|
|
TimestampTz *ts, CommitTsNodeId *nodeid);
|
|
extern TransactionId GetLatestCommitTsData(TimestampTz *ts,
|
|
CommitTsNodeId *nodeid);
|
|
|
|
extern Size CommitTsShmemBuffers(void);
|
|
extern Size CommitTsShmemSize(void);
|
|
extern void CommitTsShmemInit(void);
|
|
extern void BootStrapCommitTs(void);
|
|
extern void StartupCommitTs(void);
|
|
extern void CompleteCommitTsInitialization(void);
|
|
extern void ShutdownCommitTs(void);
|
|
extern void CheckPointCommitTs(void);
|
|
extern void ExtendCommitTs(TransactionId newestXact);
|
|
extern void TruncateCommitTs(TransactionId oldestXact);
|
|
extern void SetCommitTsLimit(TransactionId oldestXact,
|
|
TransactionId newestXact);
|
|
extern void AdvanceOldestCommitTs(TransactionId oldestXact);
|
|
|
|
/* XLOG stuff */
|
|
#define COMMIT_TS_ZEROPAGE 0x00
|
|
#define COMMIT_TS_TRUNCATE 0x10
|
|
#define COMMIT_TS_SETTS 0x20
|
|
|
|
typedef struct xl_commit_ts_set
|
|
{
|
|
TimestampTz timestamp;
|
|
CommitTsNodeId nodeid;
|
|
TransactionId mainxid;
|
|
/* subxact Xids follow */
|
|
} xl_commit_ts_set;
|
|
|
|
#define SizeOfCommitTsSet (offsetof(xl_commit_ts_set, mainxid) + \
|
|
sizeof(TransactionId))
|
|
|
|
|
|
extern void commit_ts_redo(XLogReaderState *record);
|
|
extern void commit_ts_desc(StringInfo buf, XLogReaderState *record);
|
|
extern const char *commit_ts_identify(uint8 info);
|
|
|
|
#endif /* COMMITTS_H */
|