00001 /*************************************************************************** 00002 tag: Peter Soetens Tue Dec 21 22:43:07 CET 2004 CAS.hpp 00003 00004 CAS.hpp - description 00005 ------------------- 00006 begin : Tue December 21 2004 00007 copyright : (C) 2004 Peter Soetens 00008 email : peter.soetens@mech.kuleuven.ac.be 00009 00010 *************************************************************************** 00011 * This library is free software; you can redistribute it and/or * 00012 * modify it under the terms of the GNU General Public * 00013 * License as published by the Free Software Foundation; * 00014 * version 2 of the License. * 00015 * * 00016 * As a special exception, you may use this file as part of a free * 00017 * software library without restriction. Specifically, if other files * 00018 * instantiate templates or use macros or inline functions from this * 00019 * file, or you compile this file and link it with other files to * 00020 * produce an executable, this file does not by itself cause the * 00021 * resulting executable to be covered by the GNU General Public * 00022 * License. This exception does not however invalidate any other * 00023 * reasons why the executable file might be covered by the GNU General * 00024 * Public License. * 00025 * * 00026 * This library is distributed in the hope that it will be useful, * 00027 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00028 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * 00029 * Lesser General Public License for more details. * 00030 * * 00031 * You should have received a copy of the GNU General Public * 00032 * License along with this library; if not, write to the Free Software * 00033 * Foundation, Inc., 59 Temple Place, * 00034 * Suite 330, Boston, MA 02111-1307 USA * 00035 * * 00036 ***************************************************************************/ 00037 00038 00039 #ifndef OS_COMMON_CAS_HPP 00040 #define OS_COMMON_CAS_HPP 00041 00042 #include "oro_system.h" 00043 00044 namespace RTT 00045 { namespace OS { 00053 template< class T, class V, class W > 00054 bool CAS( volatile T* addr, const V& expected, const W& value) { 00055 return expected == oro_cmpxchg(addr, expected, value); 00056 } 00057 00058 }} 00059 00060 #endif