+/*************************************************
+* Handle terminating subprocesses *
+*************************************************/
+
+/* Handle the termination of child processes. Theoretically, this need be done
+only when sigchld_seen is TRUE, but rumour has it that some systems lose
+SIGCHLD signals at busy times, so to be on the safe side, this function is
+called each time round. It shouldn't be too expensive.
+
+Arguments: none
+Returns: nothing
+*/
+
+static void
+handle_ending_processes(void)
+{
+int status;
+pid_t pid;
+
+while ((pid = waitpid(-1, &status, WNOHANG)) > 0)
+ {
+ int i;
+ DEBUG(D_any)
+ {
+ debug_printf("child %d ended: status=0x%x\n", (int)pid, status);
+#ifdef WCOREDUMP
+ if (WIFEXITED(status))
+ debug_printf(" normal exit, %d\n", WEXITSTATUS(status));
+ else if (WIFSIGNALED(status))
+ debug_printf(" signal exit, signal %d%s\n", WTERMSIG(status),
+ WCOREDUMP(status) ? " (core dumped)" : "");
+#endif
+ }
+
+ /* If it's a listening daemon for which we are keeping track of individual
+ subprocesses, deal with an accepting process that has terminated. */
+
+ if (smtp_slots)
+ {
+ for (i = 0; i < smtp_accept_max; i++)
+ if (smtp_slots[i].pid == pid)
+ {
+ if (smtp_slots[i].host_address)
+ store_free(smtp_slots[i].host_address);
+ smtp_slots[i] = empty_smtp_slot;
+ if (--smtp_accept_count < 0) smtp_accept_count = 0;
+ DEBUG(D_any) debug_printf("%d SMTP accept process%s now running\n",
+ smtp_accept_count, (smtp_accept_count == 1)? "" : "es");
+ break;
+ }
+ if (i < smtp_accept_max) continue; /* Found an accepting process */
+ }
+
+ /* If it wasn't an accepting process, see if it was a queue-runner
+ process that we are tracking. */
+
+ if (queue_pid_slots)
+ {
+ int max = atoi(CS expand_string(queue_run_max));
+ for (i = 0; i < max; i++)
+ if (queue_pid_slots[i] == pid)
+ {
+ queue_pid_slots[i] = 0;
+ if (--queue_run_count < 0) queue_run_count = 0;
+ DEBUG(D_any) debug_printf("%d queue-runner process%s now running\n",
+ queue_run_count, (queue_run_count == 1)? "" : "es");
+ break;
+ }
+ }
+ }
+}
+