Atomic.hpp

/***************************************************************************
  tag: Peter Soetens  Tue Dec 21 22:43:04 CET 2004  Atomic.hpp 

                        Atomic.hpp -  description
                           -------------------
    begin                : Tue December 21 2004
    copyright            : (C) 2004 Peter Soetens
    email                : peter.soetens@mech.kuleuven.ac.be
 
 ***************************************************************************
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#ifndef OS_COMMON_ORO_ATOMIC_HPP
#define OS_COMMON_ORO_ATOMIC_HPP

#include "oro_atomic.h"

namespace RTT
{ namespace OS {
    class RTT_API AtomicInt
    {
        oro_atomic_t _val;
    public:
        AtomicInt( int value = 0 )
        {
            ORO_ATOMIC_SETUP( &_val, value);
        }

        AtomicInt(const AtomicInt& orig)
        {
            ORO_ATOMIC_SETUP( &_val, oro_atomic_read( &(orig._val) ) );
        }

        ~AtomicInt()
        {
            ORO_ATOMIC_CLEANUP( &_val );
        }

        const AtomicInt& operator=(const AtomicInt& orig)
        {
            oro_atomic_set( &_val, oro_atomic_read( &(orig._val)));
            return *this;
        }

        int read() { return oro_atomic_read( &_val); }

        void set(int i) { oro_atomic_set( &_val, i ); }
        void add(int i) { oro_atomic_add( i, &_val ); }
        void sub(int i) { oro_atomic_sub( i, &_val ); }
        bool sub_and_test(int i) { return oro_atomic_sub_and_test( i, &_val) != 0; }
        void inc() { oro_atomic_inc( &_val ); }
        void dec() { oro_atomic_dec( &_val ); }
        bool dec_and_test() { return oro_atomic_dec_and_test( &_val ) != 0; }
        bool inc_and_test() { return oro_atomic_inc_and_test( &_val ) != 0; }
        bool add_negative(int i) { return oro_atomic_add_negative(i, &_val ) != 0; }
    };

}}

#endif