async.h
上传用户:blenddy
上传日期:2007-01-07
资源大小:6495k
文件大小:1k
- /*-------------------------------------------------------------------------
- *
- * async.h
- * Asynchronous notification: NOTIFY, LISTEN, UNLISTEN
- *
- * Copyright (c) 1994, Regents of the University of California
- *
- * $Id: async.h,v 1.11 1999/02/13 23:21:17 momjian Exp $
- *
- *-------------------------------------------------------------------------
- */
- #ifndef ASYNC_H
- #define ASYNC_H
- #include <postgres.h>
- /* 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);
- /* signal handler for inbound notifies (SIGUSR2) */
- extern void Async_NotifyHandler(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. These are meant to be called ONLY
- * from the appropriate places in PostgresMain().
- */
- extern void EnableNotifyInterrupt(void);
- extern void DisableNotifyInterrupt(void);
- #endif /* ASYNC_H */