c3c09be34b
wit: Add a header record to each WAL segment file so that it can be reliably identified. Avoid splitting WAL records across segment files (this is not strictly necessary, but makes it simpler to incorporate the header records). Make WAL entries for file creation, deletion, and truncation (as foreseen but never implemented by Vadim). Also, add support for making XLOG_SEG_SIZE configurable at compile time, similarly to BLCKSZ. Fix a couple bugs I introduced in WAL replay during recent smgr API changes. initdb is forced due to changes in pg_control contents.
32 lines
941 B
C
32 lines
941 B
C
/*
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* xlogutils.h
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*
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* PostgreSQL transaction log manager utility routines
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*
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* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $PostgreSQL: pgsql/src/include/access/xlogutils.h,v 1.14 2004/02/11 22:55:25 tgl Exp $
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*/
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#ifndef XLOG_UTILS_H
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#define XLOG_UTILS_H
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#include "access/rmgr.h"
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#include "storage/buf.h"
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#include "storage/itemptr.h"
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#include "utils/rel.h"
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extern int XLogIsOwnerOfTuple(RelFileNode hnode, ItemPointer iptr,
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TransactionId xid, CommandId cid);
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extern bool XLogIsValidTuple(RelFileNode hnode, ItemPointer iptr);
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extern void XLogInitRelationCache(void);
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extern void XLogCloseRelationCache(void);
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extern Relation XLogOpenRelation(bool redo, RmgrId rmid, RelFileNode rnode);
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extern void XLogCloseRelation(RelFileNode rnode);
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extern Buffer XLogReadBuffer(bool extend, Relation reln, BlockNumber blkno);
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#endif
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