userspace-rcu formal model removal

[urcu.git] / formal-model / futex-wakeup / futex.spin

diff --git a/formal-model/futex-wakeup/futex.spin b/formal-model/futex-wakeup/futex.spin
deleted file mode 100644 (file)
index 5459a53..0000000
--- a/formal-model/futex-wakeup/futex.spin
+++ /dev/null
@@ -1,124 +0,0 @@
-/*
- * futex.spin: Promela code to validate futex wakeup algorithm.
- *
- * Algorithm verified :
- *
- * queue = 0;
- * fut = 0;
- * runvar = 0;
- *
- *                            Waker
- *                            queue = 1;
- *                            if (fut == -1) {
- *                              fut = 0;
- *                            }
- *
- * Waiter
- * while (1) {
- *   progress:
- *   fut = fut - 1;
- *   if (queue == 1) {
- *     fut = 0;
- *   } else {
- *     if (fut == -1) {
- *        while (fut == -1) { }
- *     }
- *   }
- *   queue = 0;
- * }
- *
- * if queue = 1, then !_np
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
- * Copyright (c) 2009 Mathieu Desnoyers
- */
-
-#define get_pid()       (_pid)
-
-int queue[2] = 0;
-int fut = 0;
-
-active [2] proctype waker()
-{
-       assert(get_pid() < 2);
-
-       queue[get_pid()] = 1;
-
-       if
-       :: (fut == -1) ->
-               fut = 0;
-       :: else ->
-               skip;
-       fi;
-
-       queue[get_pid()] = 1;
-
-       if
-       :: (fut == -1) ->
-               fut = 0;
-       :: else ->
-               skip;
-       fi;
-
-#ifdef INJ_QUEUE_NO_WAKE
-       queue[get_pid()] = 1;
-#endif
-}
-
-
-active proctype waiter()
-{
-       do
-       :: 1 ->
-#ifndef INJ_LATE_DEC
-               fut = fut - 1;
-#endif
-               if
-               :: (queue[0] == 1 || queue[1] == 1) ->
-#ifndef INJ_LATE_DEC
-                       fut = 0;
-#endif
-                       skip;
-               :: else ->
-#ifdef INJ_LATE_DEC
-                       fut = fut - 1;
-#endif
-                       if
-                       :: (fut == -1) ->
-                               do
-                               :: 1 ->
-                                       if
-                                       :: (fut == -1) ->
-                                               skip;
-                                       :: else ->
-                                               break;
-                                       fi;
-                               od;
-                       :: else ->
-                               skip;
-                       fi;
-               fi;
-progress:
-               if
-               :: queue[0] == 1 ->
-                       queue[0] = 0;
-               fi;
-               if
-               :: queue[1] == 1 ->
-                       queue[1] = 0;
-               fi;
-       od;
-}