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/*
Copyright (C) 2004 Jack O'Quin
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __jack_atomicity_h__
#define __jack_atomicity_h__
#if __STDC_VERSION__ >= 201112L && !defined(__STDC_NO_ATOMICS__)
#include <stdatomic.h>
typedef atomic_int _Atomic_word;
static inline int exchange_and_add(volatile _Atomic_word* obj, int value)
{
return atomic_fetch_add_explicit(obj, value, memory_order_relaxed);
}
#else
typedef int _Atomic_word;
static inline int exchange_and_add(volatile _Atomic_word* obj, int value)
{
return __atomic_fetch_add(obj, value, __ATOMIC_RELAXED);
}
#endif
#endif /* __jack_atomicity_h__ */
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