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Good Bye, Time Travel!

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This commit is contained in:
Vadim B. Mikheev
1997-11-02 15:27:14 +00:00
parent 6cc0a00dec
commit 32cd09ac6d
36 changed files with 265 additions and 1841 deletions
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57
src/include/access/transam.h
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@@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: transam.h,v 1.11 1997/09/08 21:51:03 momjian Exp $
* $Id: transam.h,v 1.12 1997/11/02 15:26:44 vadim Exp $
*
* NOTES
* Transaction System Version 101 now support proper oid
@@ -18,7 +18,6 @@
#define TRANSAM_H
#include <storage/bufmgr.h>
#include <utils/nabstime.h>
/* ----------------
* transaction system version id
@@ -33,19 +32,19 @@
* even if their minor versions differ.
* ----------------
*/
#define TRANS_SYSTEM_VERSION 101
#define TRANS_SYSTEM_VERSION 200
/* ----------------
* transaction id status values
*
* someday we will use "11" = 3 = XID_INVALID to mean the
* starting of run-length encoded log data.
* someday we will use "11" = 3 = XID_COMMIT_CHILD to mean the
* commiting of child xactions.
* ----------------
*/
#define XID_COMMIT 2 /* transaction commited */
#define XID_ABORT 1 /* transaction aborted */
#define XID_INPROGRESS 0 /* transaction in progress */
#define XID_INVALID 3 /* other */
#define XID_COMMIT 2 /* transaction commited */
#define XID_ABORT 1 /* transaction aborted */
#define XID_INPROGRESS 0 /* transaction in progress */
#define XID_COMMIT_CHILD 3 /* child xact commited */
typedef unsigned char XidStatus;/* (2 bits) */
@@ -69,7 +68,6 @@ typedef unsigned char XidStatus;/* (2 bits) */
*/
#define TP_DataSize BLCKSZ
#define TP_NumXidStatusPerBlock (TP_DataSize * 4)
#define TP_NumTimePerBlock (TP_DataSize / 4)
/* ----------------
* LogRelationContents structure
@@ -90,25 +88,6 @@ typedef struct LogRelationContentsData
typedef LogRelationContentsData *LogRelationContents;
/* ----------------
* TimeRelationContents structure
*
* This structure describes the storage of the data in the
* first 2048 bytes of the time relation. This storage is never
* used for transaction commit times because transaction id's begin
* their numbering at 512.
*
* The first 4 bytes of this relation store the version
* number of the transction system.
* ----------------
*/
typedef struct TimeRelationContentsData
{
int TransSystemVersion;
} TimeRelationContentsData;
typedef TimeRelationContentsData *TimeRelationContents;
/* ----------------
* VariableRelationContents structure
*
@@ -127,10 +106,10 @@ typedef TimeRelationContentsData *TimeRelationContents;
*/
typedef struct VariableRelationContentsData
{
int TransSystemVersion;
TransactionId nextXidData;
TransactionId lastXidData;
Oid nextOid;
int TransSystemVersion;
TransactionId nextXidData;
TransactionId lastXidData; /* unused */
Oid nextOid;
} VariableRelationContentsData;
typedef VariableRelationContentsData *VariableRelationContents;
@@ -143,7 +122,6 @@ typedef VariableRelationContentsData *VariableRelationContents;
/*
* prototypes for functions in transam/transam.c
*/
extern AbsoluteTime TransactionIdGetCommitTime(TransactionId transactionId);
extern void InitializeTransactionLog(void);
extern bool TransactionIdDidCommit(TransactionId transactionId);
extern bool TransactionIdDidAbort(TransactionId transactionId);
@@ -162,18 +140,10 @@ extern void
TransBlockNumberSetXidStatus(Relation relation,
BlockNumber blockNumber, TransactionId xid, XidStatus xstatus,
bool *failP);
extern AbsoluteTime
TransBlockNumberGetCommitTime(Relation relation,
BlockNumber blockNumber, TransactionId xid, bool *failP);
extern void
TransBlockNumberSetCommitTime(Relation relation,
BlockNumber blockNumber, TransactionId xid, AbsoluteTime xtime,
bool *failP);
/* in transam/varsup.c */
extern void VariableRelationPutNextXid(TransactionId xid);
extern void GetNewTransactionId(TransactionId *xid);
extern void UpdateLastCommittedXid(TransactionId xid);
extern void GetNewObjectId(Oid *oid_return);
extern void CheckMaxObjectId(Oid assigned_oid);
@@ -184,11 +154,8 @@ extern void CheckMaxObjectId(Oid assigned_oid);
/* in transam.c */
extern Relation LogRelation;
extern Relation TimeRelation;
extern Relation VariableRelation;
extern TransactionId cachedGetCommitTimeXid;
extern AbsoluteTime cachedGetCommitTime;
extern TransactionId cachedTestXid;
extern XidStatus cachedTestXidStatus;