/*
* Async_UnlistenAll
*
* This is invoked by UNLISTEN "*" command, and also at backend exit.
*/
static void
Async_UnlistenAll(void)
{
if (Trace_notify)
elog(DEBUG1, "Async_UnlistenAll(%d)", MyProcPid);
queue_listen(LISTEN_UNLISTEN_ALL, "");
}
/*
* Async_Listen
*
* This is executed by the SQL listen command.
*/
void
Async_Listen(const char *relname)
{
if (Trace_notify)
elog(DEBUG1, "Async_Listen(%s,%d)", relname, MyProcPid);
queue_listen(LISTEN_LISTEN, relname);
}
/*
* Async_UnlistenAll
*
* This is invoked by UNLISTEN * command, and also at backend exit.
*/
void
Async_UnlistenAll(void)
{
if (Trace_notify)
elog(DEBUG1, "Async_UnlistenAll(%d)", MyProcPid);
/* If we couldn't possibly be listening, no need to queue anything */
if (pendingActions == NIL && !unlistenExitRegistered)
return;
queue_listen(LISTEN_UNLISTEN_ALL, "");
}
/*
* Async_Unlisten
*
* This is executed by the SQL unlisten command.
*/
void
Async_Unlisten(const char *relname)
{
if (Trace_notify)
elog(DEBUG1, "Async_Unlisten(%s,%d)", relname, MyProcPid);
/* If we couldn't possibly be listening, no need to queue anything */
if (pendingActions == NIL && !unlistenExitRegistered)
return;
queue_listen(LISTEN_UNLISTEN, relname);
}
/*
* Async_Unlisten
*
* This is executed by the SQL unlisten command.
*/
void
Async_Unlisten(const char *relname)
{
/* Handle specially the `unlisten "*"' command */
if ((!relname) || (*relname == '\0') || (strcmp(relname, "*") == 0))
{
Async_UnlistenAll();
}
else
{
if (Trace_notify)
elog(DEBUG1, "Async_Unlisten(%s,%d)", relname, MyProcPid);
queue_listen(LISTEN_UNLISTEN, relname);
}
}
