From 311bcfc6b3acdd6fd152798c7f287ddf74fa2a98 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Tue, 16 Apr 2024 21:46:48 +0200 Subject: Adding upstream version 15.4. Signed-off-by: Daniel Baumann --- src/include/commands/async.h | 53 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 src/include/commands/async.h (limited to 'src/include/commands/async.h') diff --git a/src/include/commands/async.h b/src/include/commands/async.h new file mode 100644 index 0000000..926af93 --- /dev/null +++ b/src/include/commands/async.h @@ -0,0 +1,53 @@ +/*------------------------------------------------------------------------- + * + * async.h + * Asynchronous notification: NOTIFY, LISTEN, UNLISTEN + * + * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/commands/async.h + * + *------------------------------------------------------------------------- + */ +#ifndef ASYNC_H +#define ASYNC_H + +#include + +/* + * The number of SLRU page buffers we use for the notification queue. + */ +#define NUM_NOTIFY_BUFFERS 8 + +extern PGDLLIMPORT bool Trace_notify; +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); + +#endif /* ASYNC_H */ -- cgit v1.2.3