mirror of git://gcc.gnu.org/git/gcc.git
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/* Low-level functions for atomic operations. AIX version.
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Copyright (C) 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _BITS_ATOMICITY_H
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#define _BITS_ATOMICITY_H 1
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/* Should this be type long so 64-bit word in 64-bit mode? */
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typedef int _Atomic_word;
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#include <sys/atomic_op.h>
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static inline int
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__attribute__ ((unused))
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__exchange_and_add (atomic_p __mem, int __val)
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{
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return fetch_and_add (__mem, __val);
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}
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static inline void
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__attribute__ ((unused))
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__atomic_add (atomic_p __mem, int __val)
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{
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(void) fetch_and_add (__mem, __val);
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}
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static inline int
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__attribute__ ((unused))
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__compare_and_swap (atomic_l __p, long int __oldval, long int __newval)
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{
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return compare_and_swaplp (__p, &__oldval, __newval);
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}
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static inline long
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__attribute__ ((unused))
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__always_swap (atomic_l __p, long int __newval)
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{
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long __val = *__p;
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while (! compare_and_swaplp (__p, &__val, __newval))
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/* EMPTY */;
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return __val;
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}
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static inline int
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__attribute__ ((unused))
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__test_and_set (atomic_l __p, long int __newval)
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{
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long __val = 0;
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(void) compare_and_swaplp (__p, &__val, __newval);
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return __val;
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}
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#endif /* atomicity.h */
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