[boost] using boost/detail/atomic_count.hpp and scope locking

From: george (george13p_at_[hidden])
Date: 2006-04-02 16:25:58

hi!

class someclass
{
public:
        bool a_writer(...);
        bool a_reader(...);
        bool another_reader(...);
        ....
        
private:
        ....
        boost::mutex mutex;
        boost::detail::atomic_count locked;
};

  
 
someclass::someclass():locked(0)
{
}

bool someclass::a_writer(.....)
{
        boost::mutex::scoped_lock scoped_lock(mutex,true);
        ++locked;
        if(something)
        {
                ...........
                --locked;
                return true;
        }
        ............
        --locked;
        return false;
}

bool someclass::a_reader(.....)
{
        boost::mutex::scoped_lock scoped_lock(mutex,(locked!=0));

        if(something)
        {
                .........
                return true;
        }
        ............
        return false;
}

bool someclass::another_reader(.....)
{
        boost::mutex::scoped_lock scoped_lock(mutex,(locked!=0));
        if(something)
        {
                ...........
                return true;
        }
        ............
        return false;
}

I wanna combine atomic_count and scope locking so I can avoid locking on every
operation.
writers will get the lock,blocking all others,readers is able to go on.
the method a_writer(....) is not used very often...

I know that what I am doing is not recommended,atomic_count.hpp is for internal
use only,
but is so usefull!!

would this work as I expect?
does it worth it?

thanks!