[Openmcl-devel] Portable AllegroServe for Clozure CL

[Gary Byers]

Sorry; I was writing a rambling reply to an earlier message and didn't
see this.

FYI, CCL::ATOMIC-INCF and CCL::ATOMIC-DECF have never worked on semaphores.
(A semphore is something that can be atomically incremented or decremented,
but since certain of these operations have to cause threads to sleep or
wake up, that more or less has to happen in the OS.)

If the thing that CCL::ATOMIC-INCF/DECF are choking on is now a sempahore,
then signaling it/waiting for it are indeed about the only things that you can
do with it.

It seems more likely that the thing being choked on used to just be a simple
fixnum-valued variable, was changed to be a semaphore, and some calls to
CCL::ATOMIC-INCF/DECF weren't updated.



On Tue, 18 Dec 2012, Dave Cooper wrote:

> 
> It looks like this atomic-incf and atomic-decf does not work for CCL
> semaphores anymore (did it work that way at some point?) --- apparently the
> functions signal-semaphore and wait-on-semaphore should be used instead, to
> achieve such incrementing and decrementing:
> 
> ??http://ccl.clozure.com/manual/chapter7.7.html#f_make-semaphore
> 
> I will work with aserve's main.cl and see if I can get it to work
> properly... Ultimately it will be nice of course to get any conditional
> compilation out of main.cl and isolated in the acl-compat layer...
> 
> 
> 
> 
> 
> 
> On Tue, Dec 18, 2012 at 3:18 PM, Dave Cooper <david.cooper at genworks.com>
> wrote:
>
>       The sourceforge ?one (which is in Quicklisp) seems to have been
>       updated more recently than this github fork from mtravers.
>       ?Without any further information, I think the sourceforge one
>       (the git repo on sourceforge, now) should continue to be
>       considered as the official Portable Aserve and should continue
>       to be the one included in Quicklisp...
> 
> Let's see if someone who knows more about ccl:semaphore, or why this
> was originally written this way, will chime in here...
> 
> 
> 
> 
> On Tue, Dec 18, 2012 at 3:07 PM, Zach Beane <xach at xach.com> wrote:
>       Robert Goldman <rpgoldman at sift.info> writes:
>
>       > BTW, I dunno where the copy of paserve that's in
>       quicklisp comes from ---
> 
> It comes from http://portableaserve.sourceforge.net/.
> 
> Zach
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> 
> 
> 
> 
> --
> 
> My Best,
> 
> Dave Cooper, Genworks Support
> david.cooper at genworks.com, dave.genworks.com(skype)
> USA: 248-327-3253(o), 1-248-330-2979(mobile)
> UK: 0191 645 1699
> 
> 
> 
> 
> --
> 
> My Best,
> 
> Dave Cooper, Genworks Support
> david.cooper at genworks.com, dave.genworks.com(skype)
> USA: 248-327-3253(o), 1-248-330-2979(mobile)
> UK: 0191 645 1699
> 
>