Merge branch 'feature-stripxseg' into develop

[archipelago] / xseg / xtypes / xatomic.h

diff --git a/xseg/xtypes/xatomic.h b/xseg/xtypes/xatomic.h
deleted file mode 100644 (file)
index e28b572..0000000
--- a/xseg/xtypes/xatomic.h
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
- * Copyright 2012 GRNET S.A. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- *   1. Redistributions of source code must retain the above
- *      copyright notice, this list of conditions and the following
- *      disclaimer.
- *   2. Redistributions in binary form must reproduce the above
- *      copyright notice, this list of conditions and the following
- *      disclaimer in the documentation and/or other materials
- *      provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
- * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * The views and conclusions contained in the software and
- * documentation are those of the authors and should not be
- * interpreted as representing official policies, either expressed
- * or implied, of GRNET S.A.
- */
-
-#ifndef _XATOMIC_H
-#define _XATOMIC_H
-
-#include <stdint.h>
-
-typedef struct xatomic {
-       __uint128_t value;
-} xatomic;
-
-#define MAX64  (0xffffffffffffffffUL)
-#define MAX128 (~(__uint128_t)0)
-#define Z128   ((__uint128_t)0)
-#define U128   ((__uint128_t)1)
-
-#define declare_cas(at, var)                                           \
-       uint64_t var, __xatomic_val_##var;                              \
-       __uint128_t __xatomic_serial_##var;                             \
-       xatomic *__xatomic_##var = (at)
-
-#define cas_read(var)                                                  \
-       __xatomic_##var##_restart:                                      \
-       __xatomic_serial_##var = ((__xatomic_##var)->value >> 64);      \
-       var = __xatomic_val_##var =                                     \
-               ((__xatomic_##var)->value & (0xffffffffffffffffUL)
-
-#define cas_begin(at, var)                             \
-       uint64_t var, __xatomic_val_##var;              \
-       xatomic *__xatomic_##var = (at);                \
-       __xatomic_##var##_restart:                      \
-       var = __xatomic_val_##var = (__xatomic_##var)->value
-
-#define cas_update(var)                                \
-       __sync_bool_compare_and_swap    (       \
-               &(__xatomic_##var)->value,      \
-               __xatomic_val_##var,            \
-               var                             \
-       )
-
-#define cas_restart(var)       \
-       goto __xatomic_##var##_restart
-
-
-static inline uint64_t xatomic_read(xatomic *atomic)
-{
-       return (uint64_t)atomic->value;
-}
-
-static inline void xatomic_write(xatomic *atomic, uint64_t newval)
-{
-       cas_begin(atomic, val);
-       val = newval;
-       if (!cas_update(val))
-               cas_restart(val);
-}
-
-static inline uint64_t xatomic_inc(xatomic *atomic, uint64_t inc)
-{
-       uint64_t retval;
-
-       cas_begin(atomic, val);
-       retval = val;
-       val += inc;
-       if (!cas_update(val))
-               cas_restart(val);
-
-       return retval;
-}
-
-static inline uint64_t xatomic_dec(xatomic *atomic, uint64_t dec)
-{
-       uint64_t retval;
-
-       cas_begin(atomic, val);
-       retval = val;
-       val -= dec;
-       if (!cas_update(val))
-               cas_restart(val);
-
-       return retval;
-}
-
-#endif