/*-------------------------------------------------------------------------
*
* sinvaladt . h
* POSTGRES shared cache invalidation data manager .
*
* 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 . ( If we run out of space , we instead deliver a " RESET "
* message to backends that have fallen too far behind . )
*
* The struct type SharedInvalidationMessage , defining the contents of
* a single message , is defined in sinval . h .
*
* Portions Copyright ( c ) 1996 - 2025 , PostgreSQL Global Development Group
* Portions Copyright ( c ) 1994 , Regents of the University of California
*
* src / include / storage / sinvaladt . h
*
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
*/
#ifndef SINVALADT_H
#define SINVALADT_H
#include "storage/lock.h"
#include "storage/sinval.h"
/*
* prototypes for functions in sinvaladt . c
*/
extern Size SharedInvalShmemSize(void );
extern void SharedInvalShmemInit(void );
extern void SharedInvalBackendInit(bool sendOnly);
extern void SIInsertDataEntries(const SharedInvalidationMessage *data, int n);
extern int SIGetDataEntries(SharedInvalidationMessage *data, int datasize);
extern void SICleanupQueue(bool callerHasWriteLock, int minFree);
extern LocalTransactionId GetNextLocalTransactionId(void );
#endif /* SINVALADT_H */
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