| /*------------------------------------------------------------------------- | |
| * | |
| * async.h | |
| * Asynchronous notification: NOTIFY, LISTEN, UNLISTEN | |
| * | |
| * Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group | |
| * Portions Copyright (c) 1994, Regents of the University of California | |
| * | |
| * src/include/commands/async.h | |
| * | |
| *------------------------------------------------------------------------- | |
| */ | |
| extern PGDLLIMPORT bool Trace_notify; | |
| extern PGDLLIMPORT int max_notify_queue_pages; | |
| extern PGDLLIMPORT volatile sig_atomic_t notifyInterruptPending; | |
| extern Size AsyncShmemSize(void); | |
| extern void AsyncShmemInit(void); | |
| extern void NotifyMyFrontEnd(const char *channel, | |
| const char *payload, | |
| int32 srcPid); | |
| /* notify-related SQL statements */ | |
| extern void Async_Notify(const char *channel, const char *payload); | |
| extern void Async_Listen(const char *channel); | |
| extern void Async_Unlisten(const char *channel); | |
| extern void Async_UnlistenAll(void); | |
| /* perform (or cancel) outbound notify processing at transaction commit */ | |
| extern void PreCommit_Notify(void); | |
| extern void AtCommit_Notify(void); | |
| extern void AtAbort_Notify(void); | |
| extern void AtSubCommit_Notify(void); | |
| extern void AtSubAbort_Notify(void); | |
| extern void AtPrepare_Notify(void); | |
| /* signal handler for inbound notifies (PROCSIG_NOTIFY_INTERRUPT) */ | |
| extern void HandleNotifyInterrupt(void); | |
| /* process interrupts */ | |
| extern void ProcessNotifyInterrupt(bool flush); | |