diff options
Diffstat (limited to 'src/backend/commands/async.c')
| -rw-r--r-- | src/backend/commands/async.c | 31 |
1 files changed, 11 insertions, 20 deletions
diff --git a/src/backend/commands/async.c b/src/backend/commands/async.c index ffabc346b7..d173ec9587 100644 --- a/src/backend/commands/async.c +++ b/src/backend/commands/async.c @@ -146,13 +146,10 @@ static void ClearPendingNotifies(void); * Actual notification happens during transaction commit. * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ * - * Results: - * XXX - * *-------------------------------------------------------------- */ void -Async_Notify(char *relname) +Async_Notify(const char *relname) { if (Trace_notify) elog(DEBUG1, "Async_Notify(%s)", relname); @@ -180,11 +177,8 @@ Async_Notify(char *relname) * * This is executed by the SQL listen command. * - * Register a backend (identified by its Unix PID) as listening - * on the specified relation. - * - * Results: - * XXX + * Register the current backend as listening on the specified + * relation. * * Side effects: * pg_listener is updated. @@ -192,7 +186,7 @@ Async_Notify(char *relname) *-------------------------------------------------------------- */ void -Async_Listen(char *relname, int pid) +Async_Listen(const char *relname) { Relation lRel; HeapScanDesc scan; @@ -203,7 +197,7 @@ Async_Listen(char *relname, int pid) bool alreadyListener = false; if (Trace_notify) - elog(DEBUG1, "Async_Listen(%s,%d)", relname, pid); + elog(DEBUG1, "Async_Listen(%s,%d)", relname, MyProcPid); lRel = heap_open(ListenerRelationId, ExclusiveLock); @@ -213,7 +207,7 @@ Async_Listen(char *relname, int pid) { Form_pg_listener listener = (Form_pg_listener) GETSTRUCT(tuple); - if (listener->listenerpid == pid && + if (listener->listenerpid == MyProcPid && strncmp(NameStr(listener->relname), relname, NAMEDATALEN) == 0) { alreadyListener = true; @@ -241,7 +235,7 @@ Async_Listen(char *relname, int pid) i = 0; values[i++] = (Datum) relname; - values[i++] = (Datum) pid; + values[i++] = (Datum) MyProcPid; values[i++] = (Datum) 0; /* no notifies pending */ tuple = heap_formtuple(RelationGetDescr(lRel), values, nulls); @@ -271,19 +265,16 @@ Async_Listen(char *relname, int pid) * * This is executed by the SQL unlisten command. * - * Remove the backend from the list of listening backends + * Remove the current backend from the list of listening backends * for the specified relation. * - * Results: - * XXX - * * Side effects: * pg_listener is updated. * *-------------------------------------------------------------- */ void -Async_Unlisten(char *relname, int pid) +Async_Unlisten(const char *relname) { Relation lRel; HeapScanDesc scan; @@ -297,7 +288,7 @@ Async_Unlisten(char *relname, int pid) } if (Trace_notify) - elog(DEBUG1, "Async_Unlisten(%s,%d)", relname, pid); + elog(DEBUG1, "Async_Unlisten(%s,%d)", relname, MyProcPid); lRel = heap_open(ListenerRelationId, ExclusiveLock); @@ -306,7 +297,7 @@ Async_Unlisten(char *relname, int pid) { Form_pg_listener listener = (Form_pg_listener) GETSTRUCT(tuple); - if (listener->listenerpid == pid && + if (listener->listenerpid == MyProcPid && strncmp(NameStr(listener->relname), relname, NAMEDATALEN) == 0) { /* Found the matching tuple, delete it */ |