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8ec569479f
Up until now, we've had a policy of only marking certain variables in the PostgreSQL header files with PGDLLIMPORT, but now we've decided to mark them all. This means that extensions running on Windows should no longer operate at a disadvantage as compared to extensions running on Linux: if the variable is present in a header file, it should be accessible. Discussion: http://postgr.es/m/CA+TgmoYanc1_FSfimhgiWSqVyP5KKmh5NP2BWNwDhO8Pg2vGYQ@mail.gmail.com
53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/*-------------------------------------------------------------------------
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*
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* async.h
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* Asynchronous notification: NOTIFY, LISTEN, UNLISTEN
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*
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* Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/commands/async.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef ASYNC_H
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#define ASYNC_H
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#include <signal.h>
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/*
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* The number of SLRU page buffers we use for the notification queue.
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*/
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#define NUM_NOTIFY_BUFFERS 8
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extern PGDLLIMPORT bool Trace_notify;
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extern PGDLLIMPORT volatile sig_atomic_t notifyInterruptPending;
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extern Size AsyncShmemSize(void);
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extern void AsyncShmemInit(void);
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extern void NotifyMyFrontEnd(const char *channel,
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const char *payload,
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int32 srcPid);
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/* notify-related SQL statements */
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extern void Async_Notify(const char *channel, const char *payload);
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extern void Async_Listen(const char *channel);
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extern void Async_Unlisten(const char *channel);
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extern void Async_UnlistenAll(void);
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/* perform (or cancel) outbound notify processing at transaction commit */
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extern void PreCommit_Notify(void);
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extern void AtCommit_Notify(void);
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extern void AtAbort_Notify(void);
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extern void AtSubCommit_Notify(void);
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extern void AtSubAbort_Notify(void);
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extern void AtPrepare_Notify(void);
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/* signal handler for inbound notifies (PROCSIG_NOTIFY_INTERRUPT) */
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extern void HandleNotifyInterrupt(void);
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/* process interrupts */
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extern void ProcessNotifyInterrupt(bool flush);
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#endif /* ASYNC_H */
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