index 45a86b0758362f235f9654113567dcebd2d1f275..6e310b14ebda1a24441ea308190de30602b0decf 100644 (file)
* arbitrary process to prevent that. But since so far all the callers of
* this mechanism involve some request for ending the process anyway, that
* it might end on its own first is not a problem.
+ *
+ * Note that proc will also be NULL if the pid refers to an auxiliary
+ * process or the postmaster (neither of which can be signaled via
+ * pg_signal_backend()).
*/
if (proc == NULL)
{
@@ -65,7 +69,8 @@ pg_signal_backend(int pid, int sig)
* if one backend terminated on its own during the run.
*/
ereport(WARNING,
- (errmsg("PID %d is not a PostgreSQL server process", pid)));
+ (errmsg("PID %d is not a PostgreSQL backend process", pid)));
+
return SIGNAL_BACKEND_ERROR;
}