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53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
/* Copyright (C) 2007-2010 Open Information Security Foundation
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*
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* You can copy, redistribute or modify this Program under the terms of
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* the GNU General Public License version 2 as published by the Free
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* Software Foundation.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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#ifndef __UTIL_OPTIMIZE_H__
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#define __UTIL_OPTIMIZE_H__
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/**
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* \file
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*
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* \author Victor Julien <victor@inliniac.net>
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*/
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#if CPPCHECK==1
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#define likely
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#define unlikely
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#else
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#ifndef likely
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#define likely(expr) __builtin_expect(!!(expr), 1)
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#endif
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#ifndef unlikely
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#define unlikely(expr) __builtin_expect(!!(expr), 0)
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#endif
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#endif
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/** from http://en.wikipedia.org/wiki/Memory_ordering
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*
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* C Compiler memory barrier
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*/
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#define cc_barrier() __asm__ __volatile__("": : :"memory")
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/** from http://gcc.gnu.org/onlinedocs/gcc-4.1.2/gcc/Atomic-Builtins.html
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*
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* Hardware memory barrier
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*/
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#define hw_barrier() __sync_synchronize()
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#endif /* __UTIL_OPTIMIZE_H__ */
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