Index: src/libcfa/concurrency/monitor
===================================================================
--- src/libcfa/concurrency/monitor	(revision eac73ebda3e8c9c54559c1e3023f21189bf6a631)
+++ src/libcfa/concurrency/monitor	(revision 3bb51e112144273d0beaa9cc3665fd5e23a42e4a)
@@ -0,0 +1,32 @@
+//                              -*- Mode: CFA -*-
+//
+// Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo
+//
+// The contents of this file are covered under the licence agreement in the
+// file "LICENCE" distributed with Cforall.
+//
+// monitor --
+//
+// Author           : Thierry Delisle
+// Created On       : Thd Feb 23 12:27:26 2017
+// Last Modified By : Thierry Delisle
+// Last Modified On : --
+// Update Count     : 0
+//
+
+#ifndef MONITOR_H
+#define MONITOR_H
+
+#include "assert"
+#include "invoke.h"
+
+struct monitor {
+	spinlock lock;
+	thread * holder;
+	simple_thread_list entry_queue;
+};
+
+void enter(monitor *);
+void leave(monitor *);
+
+#endif //MONITOR_H