Expert to Expert: Erik Meijer and Bertrand Meyer - Objects, Contracts, Concurrency, Sleeping BarbersApr 01, 2008 at 2:24 PM
The Eiffel SCOOP mechanism was proposed over a decade ago, making the idea generations old in the software world, yet a functioning product still hasn't shipped. Why is that?
I'm not convinced that SCOOP can work. The problem I see with it is that it allows for arbitrary sharing of state among concurrently executing objects. If it can be made to work then the compiler will probably have to make such conservative decisions wrto synchronization that performance will be a tiny fraction of the theoretical optimum.
Its one of those ideas that have a seductive elegance at first glance but ultimately turns into a dead end.