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/***************************************************************************
*
* _atomic-xlc.h - definitions of inline functions for atomic
* operations on POWERPC platform
*
* This is an internal header file used to implement the C++ Standard
* Library. It should never be #included directly by a program.
*
* $Id$
*
***************************************************************************
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied. See the License for the specific language governing
* permissions and limitations under the License.
*
* Copyright 1994-2008 Rogue Wave Software, Inc.
*
**************************************************************************/
#include <sys/atomic_op.h>
#define _RWSTD_NO_CHAR_ATOMIC_OPS
#define _RWSTD_NO_SHORT_ATOMIC_OPS
#define _RWSTD_NO_LLONG_ATOMIC_OPS
_RWSTD_NAMESPACE (__rw) {
inline int
__rw_atomic_preincrement (int &__x, bool)
{
return fetch_and_add (&__x, 1) + 1;
}
inline unsigned
__rw_atomic_preincrement (unsigned &__x, bool)
{
return __rw_atomic_preincrement (_RWSTD_REINTERPRET_CAST (int&, __x),
false);
}
inline int
__rw_atomic_predecrement (int &__x, bool)
{
return fetch_and_add(&__x,-1) - 1;
}
inline unsigned
__rw_atomic_predecrement (unsigned &__x, bool)
{
return __rw_atomic_predecrement (_RWSTD_REINTERPRET_CAST (int&, __x),
false);
}
inline int
__rw_atomic_exchange (int &__x, int __y, bool)
{
int __tmp;
do {
__tmp = __x;
} while (!compare_and_swap (&__x, &__tmp, __y));
return __tmp;
}
inline unsigned
__rw_atomic_exchange (unsigned &__x, unsigned __y, bool)
{
return __rw_atomic_exchange (_RWSTD_REINTERPRET_CAST (int&, __x),
_RWSTD_STATIC_CAST (int, __y), false);
}
# if _RWSTD_INT_SIZE < _RWSTD_LONG_SIZE
inline long
__rw_atomic_preincrement (long &__x, bool)
{
return fetch_and_addlp (&__x, 1) + 1;
}
inline unsigned long
__rw_atomic_preincrement (unsigned long &__x, bool)
{
return __rw_atomic_preincrement (_RWSTD_REINTERPRET_CAST (long&, __x),
false);
}
inline long
__rw_atomic_predecrement (long &__x, bool)
{
return fetch_and_addlp (&__x, -1) - 1;
}
inline unsigned long
__rw_atomic_predecrement (unsigned long &__x, bool)
{
return __rw_atomic_predecrement (_RWSTD_REINTERPRET_CAST (long&, __x),
false);
}
inline long
__rw_atomic_exchange (long &__x, long __y, bool)
{
long __tmp;
do {
__tmp = __x;
} while (!compare_and_swaplp (&__x, &__tmp, __y));
return __tmp;
}
inline unsigned long
__rw_atomic_exchange (unsigned long &__x, unsigned long __y, bool)
{
return __rw_atomic_exchange (_RWSTD_REINTERPRET_CAST (long&, __x),
_RWSTD_STATIC_CAST (long, __y), false);
}
# else // _RWSTD_INT_SIZE == _RWSTD_LONG_SIZE
# define _RWSTD_NO_LONG_ATOMIC_OPS
# endif // _RWSTD_INT_SIZE < _RWSTD_LONG_SIZE
} // namespace __rw