Orocos Real-Time Toolkit  2.5.0
Atomic.hpp
00001 /***************************************************************************
00002   tag: Peter Soetens  Tue Dec 21 22:43:04 CET 2004  Atomic.hpp 
00003 
00004                         Atomic.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             *
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00033  *   Foundation, Inc., 59 Temple Place,                                    *
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00035  *                                                                         *
00036  ***************************************************************************/
00037  
00038  
00039 #ifndef OS_COMMON_ORO_ATOMIC_HPP
00040 #define OS_COMMON_ORO_ATOMIC_HPP
00041 
00042 #include "oro_arch.h"
00043 
00044 namespace RTT
00045 { namespace os {
00049     class RTT_API AtomicInt
00050     {
00051         oro_atomic_t _val;
00052     public:
00053         AtomicInt( int value = 0 )
00054         {
00055             ORO_ATOMIC_SETUP( &_val, value);
00056         }
00057 
00058         AtomicInt(const AtomicInt& orig)
00059         {
00060             ORO_ATOMIC_SETUP( &_val, oro_atomic_read( &(orig._val) ) );
00061         }
00062 
00063         ~AtomicInt()
00064         {
00065             ORO_ATOMIC_CLEANUP( &_val );
00066         }
00067 
00068         const AtomicInt& operator=(const AtomicInt& orig)
00069         {
00070             oro_atomic_set( &_val, oro_atomic_read( &(orig._val)));
00071             return *this;
00072         }
00073 
00077         int read() { return oro_atomic_read( &_val); }
00078 
00082         void set(int i) { oro_atomic_set( &_val, i ); }
00083 
00084         void add(int i) { oro_atomic_add( &_val, i ); }
00085 
00086         void sub(int i) { oro_atomic_sub( &_val, i ); }
00087 
00088         bool sub_and_test(int i) { return oro_atomic_sub_and_test( &_val, i) != 0; }
00089 
00090         void inc() { oro_atomic_inc( &_val ); }
00091 
00092         void dec() { oro_atomic_dec( &_val ); }
00093 
00094         bool dec_and_test() { return oro_atomic_dec_and_test( &_val ) != 0; }
00095 
00096         bool inc_and_test() { return oro_atomic_inc_and_test( &_val ) != 0; }
00097     };
00098 
00099 }}
00100 
00101 #endif