Transaction log manager core code.
It doesn't work currently but also don't break anything -:)
This commit is contained in:
Vadim B. Mikheev
parent
2902c4c640
commit
30659d43eb
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@ -4,7 +4,7 @@
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# Makefile for access/transam
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#
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# IDENTIFICATION
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# $Header: /cvsroot/pgsql/src/backend/access/transam/Makefile,v 1.6 1998/04/06 00:21:52 momjian Exp $
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# $Header: /cvsroot/pgsql/src/backend/access/transam/Makefile,v 1.7 1999/09/27 15:47:37 vadim Exp $
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#
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#-------------------------------------------------------------------------
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@ -13,7 +13,7 @@ include ../../../Makefile.global
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CFLAGS += -I../..
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OBJS = transam.o transsup.o varsup.o xact.o xid.o
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OBJS = transam.o transsup.o varsup.o xact.o xid.o xlog.o rmgr.o
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all: SUBSYS.o
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@ -0,0 +1,4 @@
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#include "postgres.h"
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#include "access/rmgr.h"
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RmgrData *RmgrTable = NULL;
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File diff suppressed because it is too large
Load Diff
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@ -10,7 +10,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/postmaster/postmaster.c,v 1.117 1999/09/27 03:13:05 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/postmaster/postmaster.c,v 1.118 1999/09/27 15:47:43 vadim Exp $
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*
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* NOTES
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*
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@ -204,9 +204,10 @@ static int SendStop = false;
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static bool NetServer = false; /* if not zero, postmaster listen for
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* non-local connections */
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#ifdef USE_SSL
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static bool SecureNetServer = false; /* if not zero, postmaster listens for only SSL
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* non-local connections */
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#endif
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/*
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* GH: For !HAVE_SIGPROCMASK (NEXTSTEP), TRH implemented an
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@ -990,12 +991,17 @@ readStartupPacket(void *arg, PacketLen len, void *pkt)
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/* Could add additional special packet types here */
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/* Any SSL negotiation must have taken place here, so drop the connection
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* ASAP if we require SSL */
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if (SecureNetServer && !port->ssl) {
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PacketSendError(&port->pktInfo, "Backend requires secure connection.");
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return STATUS_OK;
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#ifdef USE_SSL
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/*
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* Any SSL negotiation must have taken place here, so drop the connection
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* ASAP if we require SSL
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*/
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if (SecureNetServer && !port->ssl)
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{
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PacketSendError(&port->pktInfo, "Backend requires secure connection.");
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return STATUS_OK;
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}
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#endif
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/* Check we can handle the protocol the frontend is using. */
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@ -1832,6 +1838,7 @@ CountChildren(void)
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}
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#ifdef USE_SSL
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/*
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* Initialize SSL library and structures
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*/
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@ -1860,3 +1867,4 @@ static void InitSSL(void) {
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exit(1);
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}
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}
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#endif
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@ -6,7 +6,7 @@
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* Copyright (c) 1994, Regents of the University of California
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*
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* IDENTIFICATION
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* $Id: fd.c,v 1.47 1999/07/17 20:17:42 momjian Exp $
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* $Id: fd.c,v 1.48 1999/09/27 15:47:49 vadim Exp $
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*
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* NOTES:
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*
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@ -49,6 +49,7 @@
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#include "miscadmin.h"
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#include "storage/fd.h"
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bool ReleaseDataFile(void);
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/*
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* Problem: Postgres does a system(ld...) to do dynamic loading.
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* This will open several extra files in addition to those used by
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@ -410,6 +411,19 @@ ReleaseLruFile()
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LruDelete(VfdCache[0].lruMoreRecently);
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}
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bool
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ReleaseDataFile()
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{
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DO_DB(elog(DEBUG, "ReleaseDataFile. Opened %d", nfile));
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if (nfile <= 0)
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return(false);
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Assert(VfdCache[0].lruMoreRecently != 0);
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LruDelete(VfdCache[0].lruMoreRecently);
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return(true);
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}
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static File
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AllocateVfd()
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{
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@ -9,7 +9,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/tcop/utility.c,v 1.66 1999/09/23 17:02:52 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/tcop/utility.c,v 1.67 1999/09/27 15:47:54 vadim Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -220,13 +220,13 @@ ProcessUtility(Node *parsetree,
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relname);
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}
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rel = heap_openr(relname);
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rel = heap_openr(relname, AccessExclusiveLock);
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if (RelationIsValid(rel)) {
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if (rel->rd_rel->relkind == RELKIND_SEQUENCE) {
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elog(ERROR, "TRUNCATE cannot be used on sequences. '%s' is a sequence",
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relname);
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}
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heap_close(rel);
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heap_close(rel, NoLock);
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}
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#ifndef NO_SECURITY
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if (!pg_ownercheck(userName, relname, RELNAME)) {
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@ -0,0 +1,34 @@
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/*
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*
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* rmgr.h
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*
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* Resource managers description table
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*
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*/
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#ifndef RMGR_H
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#define RMGR_H
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typedef uint8 RmgrId;
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typedef struct RmgrData
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{
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char *rm_name;
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char *(*rm_redo) (); /* REDO(XLogRecPtr rptr) */
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char *(*rm_undo) (); /* UNDO(XLogRecPtr rptr) */
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} RmgrData;
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extern RmgrData *RmgrTable;
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/*
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* Built-in resource managers
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*/
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#define RM_XLOG_ID 0
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#define RM_XACT_ID 1
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#define RM_HEAP_ID 2
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#define RM_BTREE_ID 3
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#define RM_HASH_ID 4
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#define RM_RTREE_ID 5
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#define RM_GIST_ID 6
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#define RM_MAX_ID RM_GIST_ID
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#endif /* RMGR_H */
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@ -0,0 +1,70 @@
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/*
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*
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* xlog.h
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*
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* Postgres transaction log manager
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*
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*/
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#ifndef XLOG_H
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#define XLOG_H
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#include "access/rmgr.h"
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#include "access/transam.h"
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typedef struct XLogRecPtr
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{
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uint32 xlogid; /* log file #, 0 based */
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uint32 xrecoff; /* offset of record in log file */
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} XLogRecPtr;
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typedef struct XLogRecord
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{
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XLogRecPtr xl_prev; /* ptr to previous record in log */
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XLogRecPtr xl_xact_prev; /* ptr to previous record of this xact */
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TransactionId xl_xid; /* xact id */
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uint16 xl_len; /* len of record on this page */
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uint8 xl_info;
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RmgrId xl_rmid; /* resource manager inserted this record */
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/* ACTUAL LOG DATA FOLLOWS AT END OF STRUCT */
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} XLogRecord;
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#define SizeOfXLogRecord DOUBLEALIGN(sizeof(XLogRecord))
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#define MAXLOGRECSZ (2 * BLCKSZ)
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/*
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* When there is no space on current page we continue on the next
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* page with subrecord.
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*/
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typedef struct XLogSubRecord
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{
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uint16 xl_len;
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uint8 xl_info;
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/* ACTUAL LOG DATA FOLLOWS AT END OF STRUCT */
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} XLogSubRecord;
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#define SizeOfXLogSubRecord DOUBLEALIGN(sizeof(XLogSubRecord))
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#define XLR_TO_BE_CONTINUED 0x01
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#define XLOG_PAGE_MAGIC 0x17345168
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typedef struct XLogPageHeaderData
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{
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uint32 xlp_magic;
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uint16 xlp_info;
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} XLogPageHeaderData;
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#define SizeOfXLogPHD DOUBLEALIGN(sizeof(XLogPageHeaderData))
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typedef XLogPageHeaderData *XLogPageHeader;
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#define XLP_FIRST_IS_SUBRECORD 0x0001
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extern XLogRecPtr XLogInsert(RmgrId rmid, char *hdr, uint32 hdrlen,
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char *buf, uint32 buflen);
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extern void XLogFlush(XLogRecPtr RecPtr);
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#endif /* XLOG_H */
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@ -6,13 +6,14 @@
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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* $Id: proc.h,v 1.26 1999/09/24 00:25:27 tgl Exp $
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* $Id: proc.h,v 1.27 1999/09/27 15:48:06 vadim Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef _PROC_H_
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#define _PROC_H_
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#include "access/xlog.h"
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#include "storage/lock.h"
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typedef struct
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@ -47,7 +48,7 @@ typedef struct proc
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TransactionId xmin; /* minimal running XID as it was when we
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* were starting our xact: vacuum must not
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* remove tuples deleted by xid >= xmin ! */
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XLogRecPtr logRec;
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LOCK *waitLock; /* Lock we're sleeping on ... */
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int token; /* type of lock we sleeping for */
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int holdLock; /* while holding these locks */
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@ -6,7 +6,7 @@
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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* $Id: elog.h,v 1.12 1999/09/11 19:06:25 tgl Exp $
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* $Id: elog.h,v 1.13 1999/09/27 15:48:12 vadim Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#define ERROR (-1) /* user error - return to known state */
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#define FATAL 1 /* fatal error - abort process */
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#define REALLYFATAL 2 /* take down the other backends with me */
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#define STOP REALLYFATAL
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#define DEBUG (-2) /* debug message */
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#define LOG DEBUG
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#define NOIND (-3) /* debug message, don't indent as far */
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extern void elog(int lev, const char *fmt, ...);
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