update

[urcu.git] / ticketlock-testwait / lock_progress.spin.input

diff --git a/ticketlock-testwait/lock_progress.spin.input b/ticketlock-testwait/lock_progress.spin.input
deleted file mode 100644 (file)
index b7ce6a2..0000000
--- a/ticketlock-testwait/lock_progress.spin.input
+++ /dev/null
@@ -1,130 +0,0 @@
-#define refcount_gt_one (refcount > 1)
-/*
- * 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;
-
-#define need_pause()   (_pid == 2)
-
-/*
- * Test weak fairness by either not pausing or cycling for any number of
- * steps, or forever.
- * Models a slow thread. Should be added between each atomic steps.
- * To test for wait-freedom (no starvation of a specific thread), add do_pause
- * in threads other than the one we are checking for progress (and which
- * contains the progress label).
- * To test for lock-freedom (system-wide progress), add to all threads except
- * one. All threads contain progress labels.
- */
-inline do_pause()
-{
-       if
-       :: need_pause() ->
-               if
-               :: 1 ->
-                       do
-                       :: 1 ->
-                               skip;
-                       od;
-               :: 1 -> skip;
-               fi;
-       :: else ->
-               skip;
-       fi;
-}
-
-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 ->
-               do_pause();
-               spin_lock(lock, ticket);
-               refcount = refcount + 1;
-               do_pause();
-               refcount = refcount - 1;
-               spin_unlock(lock);
-       od;
-}
-
-init
-{
-       run proc_A();
-       run proc_B();
-       run proc_B();
-       run proc_B();
-       run proc_B();
-}