[m-dev.] for review: changes to runtime required for webserver

[Peter Ross]

On Tue, Aug 22, 2000 at 08:48:41AM +1000, Robert Jeschofnik wrote:
> On 21-Aug-2000, Peter Ross <peter.ross at miscrit.be> wrote:
> > Hi,
> > 
> > For anyone to review.
> > 
> > ===================================================================
> > 
> > 
> > Estimated hours taken: 2
> > 
> > Changes required to the Mercury runtime so as to build the webserver
> > written by Peter Ross.
> > 
> > runtime/Mmakefile:
> >     Add the new semaphore files.
> >     
> > runtime/mercury_semaphore.h:
> > runtime/mercury_semaphore.c:
> >     Add an implementation of semaphores written by Tom Wagner for
> >     pthreads.  The only changes made to the code was so that it obeys
> >     the Mercury C coding convention.
> 
> What about the semaphore stuff that Tom Conway has allready done, and is in
> extras/concurrency ?
> 
AFAICT the semaphore implementation of Toms is tied quite heavily with
the representation of Mercury `threads', so is not usable in the hlc.gc
grade.  When I get my stuff more sorted I plan to start integrating it
with Toms work, at the moment it is at the proof of concept stage.

> or is this for genuine posix threads, and not just threads inside the one
> mercury engine?
> (if so, this could be exactly what I am after for something else I was doing)
> 
It is for genuine posix threads (what is a non genuine posix thread, by
the way ;) ), each spawned thread is run in its own posix thread.

The next step in my plan is to start using the Win32 thread primitives.
Should be fun.

Pete
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