Re: [boost] Active objects?

From: Reece Dunn (msclrhd_at_[hidden])
Date: 2005-11-01 13:31:40

Jason Hise wrote:
>Reece Dunn wrote:
>
> >Active objects would be very hard to do *automatically* since the object 
>is
> >a thread (very neat concept), with the constructor, methods and 
>destructor
> >being processed as messages to the object's thread.
> >
>The main obstacle in making them work automatically is the desire to
>give them familiar syntax.  If the desire to call methods directly can
>be overlooked, it seems perfectly possible to offer a generic solution.
>A simplified declaration for active <> might look something like this:
>
>template < typename Type >
>struct active : private Type
>{
>     active( [...] );
>
>     template < typename ReturnType [, ...] >
>     future < ReturnType > enqueue( ReturnType (Type::*func) ( [...] ) [,
>...] );
>};

It would be nicer to have the more natural, intuitive syntax for invoking 
methods which you could do by making use of boost::function like the 
interface library does.

Active lambdas could be done by having:

   future< int > f = active< function< int ( int ) > >( _1 = _1 * 2 )( 2 );

or something similar. This will probably not work as is, but that would be 
how I see active lambdas (at the moment).

- Reece