mirror/postgresql
2
0
Fork 0
mirror of https://git.postgresql.org/git/postgresql.git synced 2025-01-30 19:00:29 +08:00
Code Issues Packages Projects Releases Wiki Activity

Transaction log manager core code.

Browse Source 
It doesn't work currently but also don't break anything -:)
This commit is contained in:
Vadim B. Mikheev 1999-09-27 15:48:12 +00:00
parent 2902c4c640
commit 30659d43eb
10 changed files with 1583 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/backend/access/transam/Makefile
View File

@ -4,7 +4,7 @@
# Makefile for access/transam
#
# IDENTIFICATION
# $Header: /cvsroot/pgsql/src/backend/access/transam/Makefile,v 1.6 1998/04/06 00:21:52 momjian Exp $
# $Header: /cvsroot/pgsql/src/backend/access/transam/Makefile,v 1.7 1999/09/27 15:47:37 vadim Exp $
#
#-------------------------------------------------------------------------
@ -13,7 +13,7 @@ include ../../../Makefile.global
CFLAGS += -I../..
OBJS = transam.o transsup.o varsup.o xact.o xid.o
OBJS = transam.o transsup.o varsup.o xact.o xid.o xlog.o rmgr.o
all: SUBSYS.o

4
src/backend/access/transam/rmgr.c Normal file
View File

@ -0,0 +1,4 @@
#include "postgres.h"
#include "access/rmgr.h"
RmgrData *RmgrTable = NULL;

1434
src/backend/access/transam/xlog.c Normal file
View File

File diff suppressed because it is too large Load Diff

22
src/backend/postmaster/postmaster.c
View File

@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/postmaster/postmaster.c,v 1.117 1999/09/27 03:13:05 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/postmaster/postmaster.c,v 1.118 1999/09/27 15:47:43 vadim Exp $
*
* NOTES
*
@ -204,9 +204,10 @@ static int SendStop = false;
static bool NetServer = false; /* if not zero, postmaster listen for
* non-local connections */
#ifdef USE_SSL
static bool SecureNetServer = false; /* if not zero, postmaster listens for only SSL
* non-local connections */
#endif
/*
* GH: For !HAVE_SIGPROCMASK (NEXTSTEP), TRH implemented an
@ -990,12 +991,17 @@ readStartupPacket(void *arg, PacketLen len, void *pkt)
/* Could add additional special packet types here */
/* Any SSL negotiation must have taken place here, so drop the connection
* ASAP if we require SSL */
if (SecureNetServer && !port->ssl) {
PacketSendError(&port->pktInfo, "Backend requires secure connection.");
return STATUS_OK;
#ifdef USE_SSL
/*
* Any SSL negotiation must have taken place here, so drop the connection
* ASAP if we require SSL
*/
if (SecureNetServer && !port->ssl)
{
PacketSendError(&port->pktInfo, "Backend requires secure connection.");
return STATUS_OK;
}
#endif
/* Check we can handle the protocol the frontend is using. */
@ -1832,6 +1838,7 @@ CountChildren(void)
}
#ifdef USE_SSL
/*
* Initialize SSL library and structures
*/
@ -1860,3 +1867,4 @@ static void InitSSL(void) {
exit(1);
}
}
#endif

16
src/backend/storage/file/fd.c
View File

@ -6,7 +6,7 @@
* Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Id: fd.c,v 1.47 1999/07/17 20:17:42 momjian Exp $
* $Id: fd.c,v 1.48 1999/09/27 15:47:49 vadim Exp $
*
* NOTES:
*
@ -49,6 +49,7 @@
#include "miscadmin.h"
#include "storage/fd.h"
bool ReleaseDataFile(void);
/*
* Problem: Postgres does a system(ld...) to do dynamic loading.
* This will open several extra files in addition to those used by
@ -410,6 +411,19 @@ ReleaseLruFile()
LruDelete(VfdCache[0].lruMoreRecently);
}
bool
ReleaseDataFile()
{
DO_DB(elog(DEBUG, "ReleaseDataFile. Opened %d", nfile));
if (nfile <= 0)
return(false);
Assert(VfdCache[0].lruMoreRecently != 0);
LruDelete(VfdCache[0].lruMoreRecently);
return(true);
}
static File
AllocateVfd()
{

6
src/backend/tcop/utility.c
View File

@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/tcop/utility.c,v 1.66 1999/09/23 17:02:52 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/tcop/utility.c,v 1.67 1999/09/27 15:47:54 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -220,13 +220,13 @@ ProcessUtility(Node *parsetree,
relname);
}
rel = heap_openr(relname);
rel = heap_openr(relname, AccessExclusiveLock);
if (RelationIsValid(rel)) {
if (rel->rd_rel->relkind == RELKIND_SEQUENCE) {
elog(ERROR, "TRUNCATE cannot be used on sequences. '%s' is a sequence",
relname);
}
heap_close(rel);
heap_close(rel, NoLock);
}
#ifndef NO_SECURITY
if (!pg_ownercheck(userName, relname, RELNAME)) {

34
src/include/access/rmgr.h Normal file
View File

@ -0,0 +1,34 @@
/*
*
* rmgr.h
*
* Resource managers description table
*
*/
#ifndef RMGR_H
#define RMGR_H
typedef uint8 RmgrId;
typedef struct RmgrData
{
char *rm_name;
char *(*rm_redo) (); /* REDO(XLogRecPtr rptr) */
char *(*rm_undo) (); /* UNDO(XLogRecPtr rptr) */
} RmgrData;
extern RmgrData *RmgrTable;
/*
* Built-in resource managers
*/
#define RM_XLOG_ID 0
#define RM_XACT_ID 1
#define RM_HEAP_ID 2
#define RM_BTREE_ID 3
#define RM_HASH_ID 4
#define RM_RTREE_ID 5
#define RM_GIST_ID 6
#define RM_MAX_ID RM_GIST_ID
#endif /* RMGR_H */

70
src/include/access/xlog.h Normal file
View File

@ -0,0 +1,70 @@
/*
*
* xlog.h
*
* Postgres transaction log manager
*
*/
#ifndef XLOG_H
#define XLOG_H
#include "access/rmgr.h"
#include "access/transam.h"
typedef struct XLogRecPtr
{
uint32 xlogid; /* log file #, 0 based */
uint32 xrecoff; /* offset of record in log file */
} XLogRecPtr;
typedef struct XLogRecord
{
XLogRecPtr xl_prev; /* ptr to previous record in log */
XLogRecPtr xl_xact_prev; /* ptr to previous record of this xact */
TransactionId xl_xid; /* xact id */
uint16 xl_len; /* len of record on this page */
uint8 xl_info;
RmgrId xl_rmid; /* resource manager inserted this record */
/* ACTUAL LOG DATA FOLLOWS AT END OF STRUCT */
} XLogRecord;
#define SizeOfXLogRecord DOUBLEALIGN(sizeof(XLogRecord))
#define MAXLOGRECSZ (2 * BLCKSZ)
/*
* When there is no space on current page we continue on the next
* page with subrecord.
*/
typedef struct XLogSubRecord
{
uint16 xl_len;
uint8 xl_info;
/* ACTUAL LOG DATA FOLLOWS AT END OF STRUCT */
} XLogSubRecord;
#define SizeOfXLogSubRecord DOUBLEALIGN(sizeof(XLogSubRecord))
#define XLR_TO_BE_CONTINUED 0x01
#define XLOG_PAGE_MAGIC 0x17345168
typedef struct XLogPageHeaderData
{
uint32 xlp_magic;
uint16 xlp_info;
} XLogPageHeaderData;
#define SizeOfXLogPHD DOUBLEALIGN(sizeof(XLogPageHeaderData))
typedef XLogPageHeaderData *XLogPageHeader;
#define XLP_FIRST_IS_SUBRECORD 0x0001
extern XLogRecPtr XLogInsert(RmgrId rmid, char *hdr, uint32 hdrlen,
char *buf, uint32 buflen);
extern void XLogFlush(XLogRecPtr RecPtr);
#endif /* XLOG_H */

5
src/include/storage/proc.h
View File

@ -6,13 +6,14 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: proc.h,v 1.26 1999/09/24 00:25:27 tgl Exp $
* $Id: proc.h,v 1.27 1999/09/27 15:48:06 vadim Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef _PROC_H_
#define _PROC_H_
#include "access/xlog.h"
#include "storage/lock.h"
typedef struct
@ -47,7 +48,7 @@ typedef struct proc
TransactionId xmin; /* minimal running XID as it was when we
* were starting our xact: vacuum must not
* remove tuples deleted by xid >= xmin ! */
XLogRecPtr logRec;
LOCK *waitLock; /* Lock we're sleeping on ... */
int token; /* type of lock we sleeping for */
int holdLock; /* while holding these locks */

4
src/include/utils/elog.h
View File

@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: elog.h,v 1.12 1999/09/11 19:06:25 tgl Exp $
* $Id: elog.h,v 1.13 1999/09/27 15:48:12 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -17,7 +17,9 @@
#define ERROR (-1) /* user error - return to known state */
#define FATAL 1 /* fatal error - abort process */
#define REALLYFATAL 2 /* take down the other backends with me */
#define STOP REALLYFATAL
#define DEBUG (-2) /* debug message */
#define LOG DEBUG
#define NOIND (-3) /* debug message, don't indent as far */
extern void elog(int lev, const char *fmt, ...);