[cpp-threads] Re: Berlin meeting

[Boehm, Hans]

Lawrence -

Thanks.  Will you turn this into a committee paper, or post it
somewhere?

As I recall, we also spent some time discussing arguments for special
syntax for various constructs.  Some of that is embedded in your
minutes.  But I didn't see all of it.  From what I remember, the main
points were:

Fork: Argument marshalling is an issue with a pthread like interface
which doesn't have syntax support.  Anything that relies more on objects
(or the proposed C++ lambdas) has C compatibility issues.

Join: Can be viewed as a library call, but there needs to be magic
behind the implementation to propagate exceptions, since we don't know
the exception type.  It cannot be implemented as purely a library.

mutex lock/unlock: Java-like syntax is more convenient in a C setting.
In either a C or C++ setting, it probably makes condition variable usage
more convenient, since the lock can be implicit.  But you need library
versions anyway to deal with some more obscure cases.

By the time I left, it didn't look to me like this decisively resolved
the question of whether any or all of these could be exposed purely as
library calls.

Hans

> -----Original Message-----
> From: cpp-threads-bounces at decadentplace.org.uk 
> [mailto:cpp-threads-bounces at decadentplace.org.uk] On Behalf 
> Of Lawrence.Crowl at Sun.com
> Sent: Wednesday, April 19, 2006 10:09 AM
> To: cpp-threads at decadentplace.org.uk
> Subject: [cpp-threads] Re: Berlin meeting
> 
> >Threads API (or syntax):
> >
> >We spent a fair amount of time discussing this, in large part from 
> >first principles.  The discussion was still in progress when I left, 
> >but seemed to be starting to converge, at least slightly.  Lawrence 
> >Crowl ran some of this discussion, including the final piece, so I'm 
> >not sure about the final status.  He may be able to comment and/or 
> >submit a summary as a committee paper.
> 
> Here are the minutes from that meeting.
> 
>   Lawrence Crowl             650-786-6146   Sun Microsystems, Inc.
>                    Lawrence.Crowl at Sun.com   16 Network 
> Circle, UMPK16-303
>            http://www.Crowl.org/Lawrence/   Menlo Park, 
> California, 94025
>