mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-10-05 08:27:00 +02:00
d0a89683a3
hacking by Alvaro Herrera and Tom Lane.
46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* async.h
|
|
* Asynchronous notification: NOTIFY, LISTEN, UNLISTEN
|
|
*
|
|
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
* $PostgreSQL: pgsql/src/include/commands/async.h,v 1.28 2005/06/17 22:32:49 tgl Exp $
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
#ifndef ASYNC_H
|
|
#define ASYNC_H
|
|
|
|
extern bool Trace_notify;
|
|
|
|
/* notify-related SQL statements */
|
|
extern void Async_Notify(char *relname);
|
|
extern void Async_Listen(char *relname, int pid);
|
|
extern void Async_Unlisten(char *relname, int pid);
|
|
|
|
/* perform (or cancel) outbound notify processing at transaction commit */
|
|
extern void AtCommit_Notify(void);
|
|
extern void AtAbort_Notify(void);
|
|
extern void AtSubStart_Notify(void);
|
|
extern void AtSubCommit_Notify(void);
|
|
extern void AtSubAbort_Notify(void);
|
|
extern void AtPrepare_Notify(void);
|
|
|
|
/* signal handler for inbound notifies (SIGUSR2) */
|
|
extern void NotifyInterruptHandler(SIGNAL_ARGS);
|
|
|
|
/*
|
|
* enable/disable processing of inbound notifies directly from signal handler.
|
|
* The enable routine first performs processing of any inbound notifies that
|
|
* have occurred since the last disable.
|
|
*/
|
|
extern void EnableNotifyInterrupt(void);
|
|
extern bool DisableNotifyInterrupt(void);
|
|
|
|
extern void notify_twophase_postcommit(TransactionId xid, uint16 info,
|
|
void *recdata, uint32 len);
|
|
|
|
#endif /* ASYNC_H */
|