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/*-------------------------------------------------------------------------
*
* sinvaladt.h
* POSTGRES shared cache invalidation segment definitions.
*
* The shared cache invalidation manager is responsible for transmitting
* invalidation messages between backends. Any message sent by any backend
* must be delivered to all already-running backends before it can be
* forgotten.
*
* The struct type SharedInvalidationMessage, defining the contents of
* a single message, is defined in sinval.h.
*
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/storage/sinvaladt.h,v 1.47 2008/03/17 11:50:27 alvherre Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef SINVALADT_H
#define SINVALADT_H
#include "storage/sinval.h"
/*
* prototypes for functions in sinvaladt.c
*/
extern Size SInvalShmemSize(void);
extern void CreateSharedInvalidationState(void);
extern void SharedInvalBackendInit(void);
extern bool SIInsertDataEntry(SharedInvalidationMessage *data);
extern int SIGetDataEntry(int backendId, SharedInvalidationMessage *data);
extern void SIDelExpiredDataEntries(bool locked);
extern LocalTransactionId GetNextLocalTransactionId(void);
#endif /* SINVALADT_H */
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