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Diffstat (limited to 'bits/atomic.h')
| -rw-r--r-- | bits/atomic.h | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/bits/atomic.h b/bits/atomic.h deleted file mode 100644 index 6245130a91..0000000000 --- a/bits/atomic.h +++ /dev/null @@ -1,43 +0,0 @@ -/* Copyright (C) 2003 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. - - The GNU C 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. - - The GNU C 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 the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#ifndef _BITS_ATOMIC_H -#define _BITS_ATOMIC_H 1 - -/* We have by default no support for atomic operations. So define - them non-atomic. If this is a problem somebody will have to come - up with real definitions. */ - -/* The only basic operation needed is compare and exchange. */ -#define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \ - ({ __typeof (mem) __gmemp = (mem); \ - __typeof (*mem) __gret = *__gmemp; \ - __typeof (*mem) __gnewval = (newval); \ - \ - if (__gret == (oldval)) \ - *__gmemp = __gnewval; \ - __gret; }) - -#define atomic_compare_and_exchange_bool_acq(mem, newval, oldval) \ - ({ __typeof (mem) __gmemp = (mem); \ - __typeof (*mem) __gnewval = (newval); \ - \ - *__gmemp == (oldval) ? (*__gmemp = __gnewval, 0) : 1; }) - -#endif /* bits/atomic.h */ |