[M3devel] rpath woes

[Jay K]

I thought these problems were all fixed by now. :(
 
 
Maybe cooperative suspend will help.
I know that seems like a non-sequiter, but I know
that SuspendThread and GetThreadContext on Windows don't do what you'd expect
and as a result our x86-on-amd64 code isn't correct.
 
 
 - Jay


 
> To: jay.krell at cornell.edu
> CC: m3devel at elegosoft.com
> Subject: Re: [M3devel] rpath woes
> Date: Fri, 5 Jun 2015 17:32:10 -0700
> From: mika at async.caltech.edu
> 
> I think I've mentioned this on this mailing list about a hundred times, but...
> 
> the pthreads implementation of Modula-3 threads doesn't work on most OSes.
> 
> As far as I know the only OS where it is truly reliably working is AMD64_LINUX.
> 
> I certainly haven't tested all targets.
> 
> User-level threads work everywhere.
> 
> Except for AMD64_LINUX I would not suggest putting anything important to
> use Modula-3 threads built on pthreads.  They work... until they don't.
> 
> Anyone wishing to work on this and fix it, please don't change the
> AMD64_LINUX code at all unless you know exactly, precisely what you
> are doing.  It is very very difficult to debug the subtle bugs that
> get introduced.
> 
> As far as I know there's no problem with C pthreads on FreeBSD.
> 
>      Mika
> 
> Jay writes:
> >Posix threads from C? From Modula-3? 
> >
> > - Jay
> >
> >On Jun 5, 2015, at 8:42 AM, <mika at async.caltech.edu> wrote:
> >
> >> Jay K writes:
> >>> --_da40b763-6cc9-48e7-9a39-2f2565af44c7_
> >>> Content-Type: text/plain; charset="iso-8859-1"
> >>> Content-Transfer-Encoding: quoted-printable
> >>> 
> >>> The FreeBSD4 users were surprisingly vocal surprisingly recently.
> >>> So I put some work into it.
> >>> I agree it is an old system.
> >> 
> >> I think you mean "the FreeBSD4 user"... I was actually running FreeBSD 5,
> >> but the 4.x config worked well.  
> >> 
> >> I've since upgraded to 10.0-RELEASE.  And don't use it much anymore
> >> because posix threads (still) don't work right on FreeBSD.  I spent a 
> >> considerable effort to get them working right on Debian, which they
> >> now do, but didn't have the time to figure it out for a bunch of 
> >> other OSes as well.  It's really pretty nice to have them working
> >> correctly.  They aren't perfect (a bit too much locking over garbage
> >> collection issues) but they don't ever seem to crash.  On problems
> >> with lots of parallelism you do get some parallel speedup, even.
> >> 
> >>     Mika
 		 	   		  
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