Re: GCC and PThreads on CYGWIN 1.1.8

Re: GCC and PThreads on CYGWIN 1.1.8

[Earthlink]

If your goal is to port your app to windows, why not use mingw, which does
have a pthreads library. I am not experienced with it,but I think a solution
would be to have a cross-compiler gcc target mingw with the mingw pthreads
library.

dale


> BTW, I'm doing this because our multi-threaded test >programs die with
various segfault problems. This is the >same behavior that is exhibited
> when we run the same test code on our Unix systems >without enabling Posix
thread support within gcc.




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Re: GCC and PThreads on CYGWIN 1.1.8

[Mumit Khan]

On Thu, 8 Mar 2001, John Phelps wrote:

> 
> Can anyone tell me if the stock gcc 2.95.2-6 that comes with CYGWIN is
> compiled with -enable-threads=posix? If not, what is the standard
> approach for rebuilding gcc on CYGWIN? I've tried looking for the latest
> and could only dig up 2.95.2, and when I build in posix thread support I
> run into various problems with pthread_once and pthread_key_create. I
> can continue to hack on the gcc source, but I thought that perhaps
> someone may already have a build or some pointers.

Cygwin's pthreads is a partial implementation as of now, and it lacks the
interface that GCC requires with --enable-threads=posix. 

If you have multi-threaded C++ code, you're sure to run into unpredictable
problems, and it gets worse if you use lots of exceptions.

> BTW, I'm doing this because our multi-threaded test programs die with
> various segfault problems. This is the same behavior that is exhibited
> when we run the same test code on our Unix systems without enabling
> Posix thread support within gcc.
> 
> Any help or direction will be greatly appreciated.

The only direction I can think of helping to rewrite the Cygwin pthreads
implementation. If you're interested, get in touch with me and I'll get
you bits and pieces of stuff I had worked on way way back, but never
finished.

Regards,
Mumit



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GCC and PThreads on CYGWIN 1.1.8

[John Phelps]

Can anyone tell me if the stock gcc 2.95.2-6 that comes with CYGWIN is
compiled with -enable-threads=posix? If not, what is the standard
approach for rebuilding gcc on CYGWIN? I've tried looking for the latest
and could only dig up 2.95.2, and when I build in posix thread support I
run into various problems with pthread_once and pthread_key_create. I
can continue to hack on the gcc source, but I thought that perhaps
someone may already have a build or some pointers.

BTW, I'm doing this because our multi-threaded test programs die with
various segfault problems. This is the same behavior that is exhibited
when we run the same test code on our Unix systems without enabling
Posix thread support within gcc.

Any help or direction will be greatly appreciated.

-- 
John Phelps                  mailto:john.phelps@solipsys.com
Solipsys Corporation         http://www.solipsys.com

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