mirror of
https://github.com/simtactics/niotso.git
synced 2025-04-01 07:24:03 +00:00
71 lines
2.5 KiB
C
71 lines
2.5 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* predicate.h
|
|
* POSTGRES public predicate locking definitions.
|
|
*
|
|
*
|
|
* Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
* src/include/storage/predicate.h
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
#ifndef PREDICATE_H
|
|
#define PREDICATE_H
|
|
|
|
#include "utils/relcache.h"
|
|
#include "utils/snapshot.h"
|
|
|
|
|
|
/*
|
|
* GUC variables
|
|
*/
|
|
extern int max_predicate_locks_per_xact;
|
|
|
|
|
|
/* Number of SLRU buffers to use for predicate locking */
|
|
#define NUM_OLDSERXID_BUFFERS 16
|
|
|
|
|
|
/*
|
|
* function prototypes
|
|
*/
|
|
|
|
/* housekeeping for shared memory predicate lock structures */
|
|
extern void InitPredicateLocks(void);
|
|
extern Size PredicateLockShmemSize(void);
|
|
|
|
extern void CheckPointPredicate(void);
|
|
|
|
/* predicate lock reporting */
|
|
extern bool PageIsPredicateLocked(Relation relation, BlockNumber blkno);
|
|
|
|
/* predicate lock maintenance */
|
|
extern Snapshot RegisterSerializableTransaction(Snapshot snapshot);
|
|
extern void RegisterPredicateLockingXid(TransactionId xid);
|
|
extern void PredicateLockRelation(Relation relation, Snapshot snapshot);
|
|
extern void PredicateLockPage(Relation relation, BlockNumber blkno, Snapshot snapshot);
|
|
extern void PredicateLockTuple(Relation relation, HeapTuple tuple, Snapshot snapshot);
|
|
extern void PredicateLockPageSplit(Relation relation, BlockNumber oldblkno, BlockNumber newblkno);
|
|
extern void PredicateLockPageCombine(Relation relation, BlockNumber oldblkno, BlockNumber newblkno);
|
|
extern void TransferPredicateLocksToHeapRelation(Relation relation);
|
|
extern void ReleasePredicateLocks(bool isCommit);
|
|
|
|
/* conflict detection (may also trigger rollback) */
|
|
extern void CheckForSerializableConflictOut(bool valid, Relation relation, HeapTuple tuple,
|
|
Buffer buffer, Snapshot snapshot);
|
|
extern void CheckForSerializableConflictIn(Relation relation, HeapTuple tuple, Buffer buffer);
|
|
extern void CheckTableForSerializableConflictIn(Relation relation);
|
|
|
|
/* final rollback checking */
|
|
extern void PreCommit_CheckForSerializationFailure(void);
|
|
|
|
/* two-phase commit support */
|
|
extern void AtPrepare_PredicateLocks(void);
|
|
extern void PostPrepare_PredicateLocks(TransactionId xid);
|
|
extern void PredicateLockTwoPhaseFinish(TransactionId xid, bool isCommit);
|
|
extern void predicatelock_twophase_recover(TransactionId xid, uint16 info,
|
|
void *recdata, uint32 len);
|
|
|
|
#endif /* PREDICATE_H */
|