diff --git a/include/types/signal.h b/include/types/signal.h
new file mode 100644
index 0000000..b863d23
--- /dev/null
+++ b/include/types/signal.h
@@ -0,0 +1,20 @@
+/*
+ * Asynchronous signal delivery functions descriptors.
+ *
+ * Copyright 2000-2009 Willy Tarreau <w@1wt.eu>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ */
+
+#include <signal.h>
+#include <common/config.h>
+#include <common/standard.h>
+
+struct signal_descriptor {
+	int count;  /* number of times raised */
+	void (*handler)(int sig);
+};