mirror of
https://github.com/postgres/postgres.git
synced 2026-02-12 07:13:09 -05:00
531d21b75f
Further tweak commit_ts.c so that on a standby the state is completely consistent with what that in the master, rather than behaving differently in the cases that the settings differ. Now in standby and master the module should always be active or inactive in lockstep. Author: Petr Jelínek, with some further tweaks by Álvaro Herrera. Backpatch to 9.5, where commit timestamps were introduced. Discussion: http://www.postgresql.org/message-id/5622BF9D.2010409@2ndquadrant.com
69 lines
2.1 KiB
C
69 lines
2.1 KiB
C
/*
|
|
* commit_ts.h
|
|
*
|
|
* PostgreSQL commit timestamp manager
|
|
*
|
|
* Portions Copyright (c) 1996-2015, 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 "replication/origin.h"
|
|
#include "utils/guc.h"
|
|
|
|
|
|
extern PGDLLIMPORT bool track_commit_timestamp;
|
|
|
|
extern bool check_track_commit_timestamp(bool *newval, void **extra,
|
|
GucSource source);
|
|
|
|
extern void TransactionTreeSetCommitTsData(TransactionId xid, int nsubxids,
|
|
TransactionId *subxids, TimestampTz timestamp,
|
|
RepOriginId nodeid, bool write_xlog);
|
|
extern bool TransactionIdGetCommitTsData(TransactionId xid,
|
|
TimestampTz *ts, RepOriginId *nodeid);
|
|
extern TransactionId GetLatestCommitTsData(TimestampTz *ts,
|
|
RepOriginId *nodeid);
|
|
|
|
extern Size CommitTsShmemBuffers(void);
|
|
extern Size CommitTsShmemSize(void);
|
|
extern void CommitTsShmemInit(void);
|
|
extern void BootStrapCommitTs(void);
|
|
extern void StartupCommitTs(bool force_enable);
|
|
extern void CommitTsParameterChange(bool xlrecvalue, bool pgcontrolvalue);
|
|
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;
|
|
RepOriginId 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 /* COMMIT_TS_H */
|