[Haskell] select(2) or poll(2)-like function?

[Colin Adams]

On 18 April 2011 17:48, Mike Meyer <mwm at mired.org> wrote:

> On Mon, 18 Apr 2011 17:07:53 +0100
> Colin Adams <colinpauladams at googlemail.com> wrote:
> > On 18 April 2011 16:54, Ertugrul Soeylemez <es at ertes.de> wrote:
> >
> > >
> > > >
> > > > Well, *someone* has to worry about robustness and scalability. Users
> > > > notice when their two minute system builds start taking four minutes
> > > > (and will be at my door wanting me to fix it) because something
> didn't
> > > > scale fast enough, or have to be run more than once because a failing
> > > > component build wasn't restarted properly. I'm willing to believe
> that
> > > > haskell lets you write more scalable code than C, but C's tools for
> > > > handling concurrency suck, so that should be true in any language
> > > > where someone actually thought about dealing with concurrency beyond
> > > > locks and protected methods. The problem is, the only language I've
> > > > found where that's true that *also* has reasonable tools to deal with
> > > > scaling beyond a single system is Eiffel (which apparently abstracts
> > > > things even further than haskell - details like how concurrency is
> > > > achieved or how many concurrent operations you can have are
> configured
> > > > when you start an application, *not* when writing it). Unfortunately,
> > > > Eiffel has other problems that make it undesirable.
> > >
> > > I can't make a comparison, because I don't know Eiffel.
> >
> > I do, and I don't recognize what the OP is referring to - I suspect he
> meant
> > Erlang.
>
> No, I meant Eiffel. In particular, the Simple Concurrent Object
> Oriented Programming system was described in OOSC but is "not yet part
> of the official standard" (one of those "other problems" I
> mentioned).
>

SCOOP has yet to be implemented in a released compiler.
Eiffel Software are currently incorporating into version 6.8, which will be
released in a month or two. Note there is known to be an overhead associated
with this level of abstraction.

-- 
Colin Adams
Preston, Lancashire, ENGLAND
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