50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
|
/*-------------------------------------------------------------------------
|
||
|
|
*
|
||
|
|
* walsender.h
|
||
|
|
* Exports from replication/walsender.c.
|
||
|
|
*
|
||
|
|
* Portions Copyright (c) 2010-2010, PostgreSQL Global Development Group
|
||
|
|
*
|
||
|
|
* $PostgreSQL: pgsql/src/include/replication/walsender.h,v 1.1 2010/01/15 09:19:09 heikki Exp $
|
||
|
|
*
|
||
|
|
*-------------------------------------------------------------------------
|
||
|
|
*/
|
||
|
|
#ifndef _WALSENDER_H
|
||
|
|
#define _WALSENDER_H
|
||
|
|
|
||
|
|
#include "access/xlog.h"
|
||
|
|
#include "storage/spin.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Each walsender has a WalSnd struct in shared memory.
|
||
|
|
*/
|
||
|
|
typedef struct WalSnd
|
||
|
|
{
|
||
|
|
pid_t pid; /* this walsender's process id, or 0 */
|
||
|
|
XLogRecPtr sentPtr; /* WAL has been sent up to this point */
|
||
|
|
|
||
|
|
slock_t mutex; /* locks shared variables shown above */
|
||
|
|
} WalSnd;
|
||
|
|
|
||
|
|
/* There is one WalSndCtl struct for the whole database cluster */
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
WalSnd walsnds[1]; /* VARIABLE LENGTH ARRAY */
|
||
|
|
} WalSndCtlData;
|
||
|
|
|
||
|
|
extern WalSndCtlData *WalSndCtl;
|
||
|
|
|
||
|
|
/* global state */
|
||
|
|
extern bool am_walsender;
|
||
|
|
|
||
|
|
/* user-settable parameters */
|
||
|
|
extern int WalSndDelay;
|
||
|
|
|
||
|
|
extern int WalSenderMain(void);
|
||
|
|
extern void WalSndSignals(void);
|
||
|
|
extern Size WalSndShmemSize(void);
|
||
|
|
extern void WalSndShmemInit(void);
|
||
|
|
extern XLogRecPtr GetOldestWALSendPointer(void);
|
||
|
|
|
||
|
|
#endif /* _WALSENDER_H */
|