+gint flx_set_cloexec(gint fd);
+gint flx_set_nonblock(gint fd);
+gint flx_wait_for_write(gint fd);
+
+GTimeVal *flx_elapse_time(GTimeVal *tv, guint msec, guint jitter);
+
+gint flx_age(const GTimeVal *a);
+
+guint flx_domain_hash(const gchar *p);
+gboolean flx_domain_cmp(const gchar *a, const gchar *b);
+gboolean flx_domain_equal(const gchar *a, const gchar *b);
+
+void flx_hexdump(gconstpointer p, guint size);
+