blob: 93a10e72feb0df8e4624a78e8c1f08859bac602c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
/*-------------------------------------------------------------------------
*
* sinval.h
* POSTGRES shared cache invalidation communication definitions.
*
*
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: sinval.h,v 1.18 2001/02/26 00:50:08 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef SINVAL_H
#define SINVAL_H
#include "storage/itemptr.h"
#include "storage/spin.h"
extern SPINLOCK SInvalLock;
extern int SInvalShmemSize(int maxBackends);
extern void CreateSharedInvalidationState(int maxBackends);
extern void InitBackendSharedInvalidationState(void);
extern void RegisterSharedInvalid(int cacheId, Index hashIndex,
ItemPointer pointer);
extern void InvalidateSharedInvalid(void (*invalFunction) (),
void (*resetFunction) ());
extern bool DatabaseHasActiveBackends(Oid databaseId, bool ignoreMyself);
extern bool TransactionIdIsInProgress(TransactionId xid);
extern void GetXmaxRecent(TransactionId *XmaxRecent);
extern int CountActiveBackends(void);
#endif /* SINVAL_H */
|
