Subj : Re: VC++ 2005 beta1 fails with pthreads benchmark tests
To   : comp.os.ms-windows.programmer.nt.kernel-mode,comp.programming.threads
From : Uenal Mutlu
Date : Tue Apr 19 2005 11:40 am

BTW, here I have posted detailed outputs of the compilation
and execution tests using the two MS compilers:
news://news.microsoft.com/microsoft.public.dotnet.languages.vc
(the subject is the same).


"Uenal Mutlu" wrote
> "Maxim S. Shatskih" wrote
> >     Not much people use POSIX threads in Windows, and even lesser of them
need
> > 100% POSIX compatibility. Most just need their code to work.
>
> Unfortunately the VC++2005 compiler generates buggy code.
> And, I would say the number of POSIX users increases more and more
> since people want go with proven international standards and see the
> source code of the library they use. The threading functions of MS
> are in my eyes a nightmare. There is no concept behind it since
> there are so many incompatible function calls to start a thread, for example:
> _beginthread, beginthreadex, CreateThread, AfxBeginThread, ...
> ... and each with its own thread proc format and limitations and/or
> differences...  It simply is yelling for a standard.
>
> But, the real issue here is with compatibility of the compiler to the previous
> version, and code correctness. Ie. wheter the VC++2005 compiler
> can be used with 3rd party libraries, whether it is compatible to
> standards and to it's own previous version (VC++6), and whether
> it can successfully be used for real-world projects.
> It seems to me that VC++2005 is a complete new design, and not building
> on the VC++6 design. From a new version of a product I would expect
> that it builds on the goodies of the old version and improves it, fixes old
bugs,
> adds the new items of the C/C++ standards etc.
> But here it is a complete new development. So I'm afraid it will take them
> some more years to make it usable for real world application development.
>
>
> > "Uenal Mutlu" wrote
> > > When the POSIX pthreads library for w32 release 2-2-0
> > > (http://sources.redhat.com/pthreads-win32/) is compiled with VC++6
> > > then it compiles and passes all the benchmark tests in the subdirectory
> > "tests".
> > > Also, VC++ 2005 beta 1 compiles the tests fine, but here the following
> > > tests fail in execution:
> > >
> > > #   semaphore1.pass \
....snip...
> > > #   spin4.pass  \
> > >
> > > Why are there such differences in execution of the generated code
> > > between VC++6 and VC++2005 ? Is this due to bugs in the beta1,
> > > or is this the result of general differences between the two products?
> > > Are there any compiler/linker switches for backwards "compatibility" to
> > VC++6?

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