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messages if the calling transaction aborts later on. Collapsing out line pointer redirects is a done deal as soon as we complete the page update, so syscache *must* be notified even if the VACUUM FULL as a whole doesn't complete. To fix, add some functionality to inval.c to allow the pending inval messages to be sent immediately while heap_page_prune is still running. The implementation is a bit chintzy: it will only work in the context of VACUUM FULL. But that's all we need now, and it can always be extended later if needed. Per my trouble report of a week ago.
62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/*-------------------------------------------------------------------------
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*
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* inval.h
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* POSTGRES cache invalidation dispatcher definitions.
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*
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*
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* Portions Copyright (c) 1996-2008, 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/utils/inval.h,v 1.42 2008/03/13 18:00:32 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef INVAL_H
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#define INVAL_H
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#include "access/htup.h"
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#include "utils/rel.h"
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typedef void (*CacheCallbackFunction) (Datum arg, Oid relid);
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extern void AcceptInvalidationMessages(void);
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extern void AtStart_Inval(void);
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extern void AtSubStart_Inval(void);
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extern void AtEOXact_Inval(bool isCommit);
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extern void AtEOSubXact_Inval(bool isCommit);
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extern void AtPrepare_Inval(void);
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extern void PostPrepare_Inval(void);
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extern void CommandEndInvalidationMessages(void);
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extern void BeginNonTransactionalInvalidation(void);
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extern void EndNonTransactionalInvalidation(void);
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extern void CacheInvalidateHeapTuple(Relation relation, HeapTuple tuple);
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extern void CacheInvalidateRelcache(Relation relation);
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extern void CacheInvalidateRelcacheByTuple(HeapTuple classTuple);
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extern void CacheInvalidateRelcacheByRelid(Oid relid);
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extern void CacheRegisterSyscacheCallback(int cacheid,
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CacheCallbackFunction func,
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Datum arg);
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extern void CacheRegisterRelcacheCallback(CacheCallbackFunction func,
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Datum arg);
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extern void inval_twophase_postcommit(TransactionId xid, uint16 info,
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void *recdata, uint32 len);
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#endif /* INVAL_H */
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