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Diffstat (limited to 'framework/src/suricata/src/util-optimize.h')
| -rw-r--r-- | framework/src/suricata/src/util-optimize.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/framework/src/suricata/src/util-optimize.h b/framework/src/suricata/src/util-optimize.h new file mode 100644 index 00000000..bde35ddd --- /dev/null +++ b/framework/src/suricata/src/util-optimize.h @@ -0,0 +1,52 @@ +/* Copyright (C) 2007-2010 Open Information Security Foundation + * + * You can copy, redistribute or modify this Program under the terms of + * the GNU General Public License version 2 as published by the Free + * Software Foundation. + * + * 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 + * version 2 along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ + +#ifndef __UTIL_OPTIMIZE_H__ +#define __UTIL_OPTIMIZE_H__ + +/** + * \file + * + * \author Victor Julien <victor@inliniac.net> + */ + +#if CPPCHECK==1 +#define likely +#define unlikely +#else +#ifndef likely +#define likely(expr) __builtin_expect(!!(expr), 1) +#endif +#ifndef unlikely +#define unlikely(expr) __builtin_expect(!!(expr), 0) +#endif +#endif + +/** from http://en.wikipedia.org/wiki/Memory_ordering + * + * C Compiler memory barrier + */ +#define cc_barrier() __asm__ __volatile__("": : :"memory") + +/** from http://gcc.gnu.org/onlinedocs/gcc-4.1.2/gcc/Atomic-Builtins.html + * + * Hardware memory barrier + */ +#define hw_barrier() __sync_synchronize() + +#endif /* __UTIL_OPTIMIZE_H__ */ + |