g_child_watch usage

["Nickolay V. Shmyrev" <nshmyrev yandex ru>]

Hello. I develop application that can manage child process with ptrace/
gtk. It runs child process in vte terminal using vte_terminal_forkpty
and manages it's with ptrace calls.

For notification about child state I've used VteReaper implementation
(it is similar to g_child_watch, it is GObject, that emits signal on
child exit). To implement it, vte used sigaction. Now vte is upgraded to
0.11.11 and use g_child_watch functionality to implement VteReaper. And
I've meet some problems, because of difference of old implementation of
reaper and new.

The problem is that after first SIGCLD the g_child_source is removed
automatically and can't be longer used. To solve this problem, I suggest
the following change:

--- gmain.c.orig        Sun Mar 14 20:58:27 2004
+++ gmain.c     Wed May 12 19:09:16 2004
@@ -3489,6 +3489,15 @@
 
   (child_watch_callback) (child_watch_source->pid, child_watch_source-
>child_status, user_data);
 
+#ifndef G_OS_WIN32
+  /* If child have not exit yet, we should wait for for another
SIGCHILD */
+  if (!WIFEXITED(child_watch_source->child_status))
+    {
+      child_watch_source->child_exited = FALSE;
+      return TRUE;
+    }
+#endif
+
   /* We never keep a child watch source around as the child is gone */
   return FALSE;
 }

Is there another solution for that problem?