userspace-rcu formal model removal

[urcu.git] / formal-model / ticketlock / mem-progress.spin

diff --git a/formal-model/ticketlock/mem-progress.spin b/formal-model/ticketlock/mem-progress.spin
deleted file mode 100644 (file)
index dad43a4..0000000
--- a/formal-model/ticketlock/mem-progress.spin
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * 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
- */
-
-/* 16 CPUs max (byte has 8 bits, divided in two) */
-
-#ifndef CONFIG_BITS_PER_BYTE
-#define BITS_PER_BYTE          8
-#else
-// test progress failure with shorter byte size. Will fail with 5 proc.
-#define BITS_PER_BYTE          CONFIG_BITS_PER_BYTE
-#endif
-
-#define HBPB                   (BITS_PER_BYTE / 2)     /* 4 */
-#define HMASK                  ((1 << HBPB) - 1)       /* 0x0F */
-
-/* for byte type */
-#define LOW_HALF(val)          ((val) & HMASK)
-#define LOW_HALF_INC           1
-
-#define HIGH_HALF(val)         ((val) & (HMASK << HBPB))
-#define HIGH_HALF_INC          (1 << HBPB)
-
-byte lock = 0;
-byte refcount = 0;
-
-inline spin_lock(lock, ticket)
-{
-       atomic {
-               ticket = HIGH_HALF(lock) >> HBPB;
-               lock = lock + HIGH_HALF_INC;    /* overflow expected */
-       }
-
-       do
-       :: 1 ->
-               if
-               :: (LOW_HALF(lock) == ticket) ->
-                       break;
-               :: else ->
-                       skip;
-               fi;
-       od;
-}
-
-inline spin_unlock(lock)
-{
-       lock = HIGH_HALF(lock) | LOW_HALF(lock + LOW_HALF_INC);
-}
-
-proctype proc_A()
-{
-       byte ticket;
-
-       do
-       :: 1 ->
-progress_A:
-               spin_lock(lock, ticket);
-               refcount = refcount + 1;
-               refcount = refcount - 1;
-               spin_unlock(lock);
-       od;
-}
-
-proctype proc_B()
-{
-       byte ticket;
-
-       do
-       :: 1 ->
-               spin_lock(lock, ticket);
-               refcount = refcount + 1;
-               refcount = refcount - 1;
-               spin_unlock(lock);
-       od;
-}
-
-init
-{
-       run proc_A();
-       run proc_B();
-       run proc_B();
-       run proc_B();
-       run proc_B();
-}