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of shared or nailed system catalogs. This has two key benefits: * The new CLUSTER-based VACUUM FULL can be applied safely to all catalogs. * We no longer have to use an unsafe reindex-in-place approach for reindexing shared catalogs. CLUSTER on nailed catalogs now works too, although I left it disabled on shared catalogs because the resulting pg_index.indisclustered update would only be visible in one database. Since reindexing shared system catalogs is now fully transactional and crash-safe, the former special cases in REINDEX behavior have been removed; shared catalogs are treated the same as non-shared. This commit does not do anything about the recently-discussed problem of deadlocks between VACUUM FULL/CLUSTER on a system catalog and other concurrent queries; will address that in a separate patch. As a stopgap, parallel_schedule has been tweaked to run vacuum.sql by itself, to avoid such failures during the regression tests.
42 lines
1.4 KiB
C
42 lines
1.4 KiB
C
/*-------------------------------------------------------------------------
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*
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* storage.h
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* prototypes for functions in backend/catalog/storage.c
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*
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*
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* Portions Copyright (c) 1996-2010, 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/catalog/storage.h,v 1.5 2010/02/07 20:48:13 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef STORAGE_H
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#define STORAGE_H
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#include "access/xlog.h"
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#include "lib/stringinfo.h"
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#include "storage/block.h"
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#include "storage/relfilenode.h"
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#include "utils/relcache.h"
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extern void RelationCreateStorage(RelFileNode rnode, bool istemp);
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extern void RelationDropStorage(Relation rel);
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extern void RelationPreserveStorage(RelFileNode rnode);
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extern void RelationTruncate(Relation rel, BlockNumber nblocks);
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/*
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* These functions used to be in storage/smgr/smgr.c, which explains the
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* naming
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*/
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extern void smgrDoPendingDeletes(bool isCommit);
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extern int smgrGetPendingDeletes(bool forCommit, RelFileNode **ptr,
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bool *haveNonTemp);
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extern void AtSubCommit_smgr(void);
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extern void AtSubAbort_smgr(void);
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extern void PostPrepare_smgr(void);
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extern void smgr_redo(XLogRecPtr lsn, XLogRecord *record);
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extern void smgr_desc(StringInfo buf, uint8 xl_info, char *rec);
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#endif /* STORAGE_H */
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