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<h1>include/nucleus/compiler.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * Copyright (C) 2001-2006 Philippe Gerum <rpm@xenomai.org>.</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * Xenomai is free software; you can redistribute it and/or modify</span>
<a name="l00005"></a>00005 <span class="comment"> * it under the terms of the GNU General Public License as published</span>
<a name="l00006"></a>00006 <span class="comment"> * by the Free Software Foundation; either version 2 of the License,</span>
<a name="l00007"></a>00007 <span class="comment"> * or (at your option) any later version.</span>
<a name="l00008"></a>00008 <span class="comment"> *</span>
<a name="l00009"></a>00009 <span class="comment"> * Xenomai is distributed in the hope that it will be useful, but</span>
<a name="l00010"></a>00010 <span class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00011"></a>00011 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00012"></a>00012 <span class="comment"> * General Public License for more details.</span>
<a name="l00013"></a>00013 <span class="comment"> *</span>
<a name="l00014"></a>00014 <span class="comment"> * You should have received a copy of the GNU General Public License</span>
<a name="l00015"></a>00015 <span class="comment"> * along with Xenomai; if not, write to the Free Software</span>
<a name="l00016"></a>00016 <span class="comment"> * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA</span>
<a name="l00017"></a>00017 <span class="comment"> * 02111-1307, USA.</span>
<a name="l00018"></a>00018 <span class="comment"> */</span>
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="preprocessor">#ifndef _XENO_NUCLEUS_COMPILER_H</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span><span class="preprocessor">#define _XENO_NUCLEUS_COMPILER_H</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span>
<a name="l00023"></a>00023 <span class="preprocessor">#if !defined(__IN_XENOMAI__) && (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 0))</span>
<a name="l00024"></a>00024 <span class="preprocessor"></span><span class="preprocessor">#define __deprecated_call__ __attribute__((deprecated))</span>
<a name="l00025"></a>00025 <span class="preprocessor"></span><span class="preprocessor">#ifdef __KERNEL__</span>
<a name="l00026"></a>00026 <span class="preprocessor"></span><span class="preprocessor">#ifdef CONFIG_XENO_OPT_NOWARN_DEPRECATED</span>
<a name="l00027"></a>00027 <span class="preprocessor"></span><span class="preprocessor">#define __deprecated_in_kernel__</span>
<a name="l00028"></a>00028 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00029"></a>00029 <span class="preprocessor"></span><span class="preprocessor">#define __deprecated_in_kernel__ __deprecated_call__</span>
<a name="l00030"></a>00030 <span class="preprocessor"></span><span class="preprocessor">#endif </span><span class="comment">/* CONFIG_XENO_OPT_NOWARN_DEPRECATED */</span>
<a name="l00031"></a>00031 <span class="preprocessor">#else</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span><span class="preprocessor">#define __deprecated_in_kernel__</span>
<a name="l00033"></a>00033 <span class="preprocessor"></span><span class="preprocessor">#endif </span><span class="comment">/* !__KERNEL__ */</span>
<a name="l00034"></a>00034 <span class="preprocessor">#else </span><span class="comment">/* __IN_XENOMAI__ || !(__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 0)) */</span>
<a name="l00035"></a>00035 <span class="preprocessor">#define __deprecated_in_kernel__</span>
<a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#endif </span><span class="comment">/* __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 0) */</span>
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="preprocessor">#ifndef likely</span>
<a name="l00039"></a>00039 <span class="preprocessor"></span><span class="preprocessor">#if !defined(__GNUC__) || __GNUC__ == 2 && __GNUC_MINOR__ < 96</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span><span class="preprocessor">#define __builtin_expect(x, v) (x)</span>
<a name="l00041"></a>00041 <span class="preprocessor"></span><span class="preprocessor">#endif </span><span class="comment">/* !gcc or gcc version < 2.96 */</span>
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="preprocessor">#define likely(x) __builtin_expect((x) != 0, 1)</span>
<a name="l00044"></a>00044 <span class="preprocessor"></span><span class="preprocessor">#define unlikely(x) __builtin_expect((x) != 0, 0)</span>
<a name="l00045"></a>00045 <span class="preprocessor"></span><span class="preprocessor">#endif </span><span class="comment">/* !defined(likely) */</span>
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="preprocessor">#endif </span><span class="comment">/* !_XENO_NUCLEUS_COMPILER_H */</span>
</pre></div></div>
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