api_2.5.6.1/api/compiler_8h_source.html

00001 /*
00002  * Copyright (C) 2001-2006 Philippe Gerum <[email protected]>.
00003  *
00004  * Xenomai is free software; you can redistribute it and/or modify
00005  * it under the terms of the GNU General Public License as published
00006  * by the Free Software Foundation; either version 2 of the License,
00007  * or (at your option) any later version.
00008  *
00009  * Xenomai is distributed in the hope that it will be useful, but
00010  * WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  * General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with Xenomai; if not, write to the Free Software
00016  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
00017  * 02111-1307, USA.
00018  */
00019
00020 #ifndef _XENO_NUCLEUS_COMPILER_H
00021 #define _XENO_NUCLEUS_COMPILER_H
00022
00023 #if !defined(__IN_XENOMAI__) && (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 0))
00024 #define __deprecated_call__             __attribute__((deprecated))
00025 #ifdef __KERNEL__
00026 #ifdef CONFIG_XENO_OPT_NOWARN_DEPRECATED
00027 #define __deprecated_in_kernel__
00028 #else
00029 #define __deprecated_in_kernel__        __deprecated_call__
00030 #endif  /* CONFIG_XENO_OPT_NOWARN_DEPRECATED */
00031 #else
00032 #define __deprecated_in_kernel__
00033 #endif /* !__KERNEL__ */
00034 #else /* __IN_XENOMAI__ || !(__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 0)) */
00035 #define __deprecated_in_kernel__
00036 #endif /* __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 0) */
00037
00038 #ifndef likely
00039 #if !defined(__GNUC__) || __GNUC__ == 2 && __GNUC_MINOR__ < 96
00040 #define __builtin_expect(x, v)         (x)
00041 #endif /* !gcc or gcc version < 2.96 */
00042
00043 #define likely(x)   __builtin_expect((x) != 0, 1)
00044 #define unlikely(x) __builtin_expect((x) != 0, 0)
00045 #endif /* !defined(likely) */
00046
00047 #endif /* !_XENO_NUCLEUS_COMPILER_H */