-typedef gboolean (*GFDSourceFunc) (gpointer user_data,
- GIOCondition condition,
- int fd);
-typedef gboolean (*GFDSourceObjectFunc) (GObject *object,
- GIOCondition condition,
- gpointer user_data);
-
-void _g_queue_async_result (GAsyncResultData *result,
- gpointer async_object,
- GError *error,
- gpointer user_data,
- GSourceFunc source_func);