|
Server : Apache System : Linux ecngx264.inmotionhosting.com 4.18.0-553.77.1.lve.el8.x86_64 #1 SMP Wed Oct 8 14:21:00 UTC 2025 x86_64 User : lonias5 ( 3576) PHP Version : 7.3.33 Disable Function : NONE Directory : /proc/self/root/proc/thread-self/root/opt/imh-python/include/pgsql/server/access/ |
Upload File : |
/*
* clog.h
*
* PostgreSQL transaction-commit-log manager
*
* Portions Copyright (c) 1996-2020, 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 "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 ShutdownCLOG(void);
extern void CheckPointCLOG(void);
extern void ExtendCLOG(TransactionId newestXact);
extern void TruncateCLOG(TransactionId oldestXact, Oid oldestxid_datoid);
/* 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 */