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atomicity.generic.cpp
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atomicity.generic.cpp
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/*
* Copyright (C) 2006-2007 by Marc Boris Duerner
* Copyright (C) 2006 by Aloysius Indrayanto
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* As a special exception, you may use this file as part of a free
* software library without restriction. Specifically, if other files
* instantiate templates or use macros or inline functions from this
* file, or you compile this file and link it with other files to
* produce an executable, this file does not by itself cause the
* resulting executable to be covered by the GNU General Public
* License. This exception does not however invalidate any other
* reasons why the executable file might be covered by the GNU Library
* General Public License.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <cxxtools/atomicity.generic.h>
#include <csignal>
namespace cxxtools {
atomic_t atomicGet(volatile atomic_t& val)
{
return val;
}
void atomicSet(volatile atomic_t& val, atomic_t n)
{
val = n;
}
atomic_t atomicIncrement(volatile atomic_t& dest)
{
return dest++;
}
atomic_t atomicDecrement(volatile atomic_t& dest)
{
return dest--;
}
atomic_t atomicCompareExchange(volatile atomic_t& dest, atomic_t exch, atomic_t comp)
{
atomic_t tmp = dest;
if(dest== comp)
dest = exch;
return tmp;
}
void* atomicCompareExchange(void* volatile& dest, void* exch, void* comp)
{
void* tmp = dest;
if(dest== comp)
dest = exch;
return tmp;
}
atomic_t atomicExchange(volatile atomic_t& dest, atomic_t exch)
{
atomic_t tmp = dest;
dest = exch;
return tmp;
}
void* atomicExchange(void* volatile& dest, void* exch)
{
void* tmp = dest;
dest = exch;
return tmp;
}
atomic_t atomicExchangeAdd(volatile atomic_t& dest, atomic_t add)
{
atomic_t tmp = dest;
dest += add;
return tmp;
}
} // namespace cxxtools