cygwin/newlib types patchs

J. Johnston
Thu Mar 29 18:08:00 GMT 2001

Robert Collins wrote:
> ----- Original Message -----
> From: "J. Johnston" <>
> To: "Robert Collins" <>
> Cc: "Joel Sherrill" <>;
> <>; <>
> Sent: Friday, March 30, 2001 3:26 AM
> Subject: Re: cygwin/newlib types patchs
> > Robert Collins wrote:
> > >
> > >
> > > Uhmm yes :] I've actually put the cygwin ones in cygwin/types.h, but
> as
> > > long as it's system specific it doesn't really matter.
> > >
> >
> > So, what are you proposing?  I still contend that removing all the
> system pthread
> > types into the sys directories is the clean way to implement this and
> the best
> > long term solution for adding other system pthread implementations in
> the future.
> > I don't think overriding the entire types header is warranted.
> >
> > Unless you have a better proposal, I am going to do this so it would
> save me the work
> > if as part of your change you simply split the pthread types into
> sys/pthreadtypes.h and
> > put the RTEMS stuff in the RTEMS directory and the Cygwin stuff in the
> Cygwin directory.
> >
> > -- Jeff J.
> >
> I don't know how rtems is laid out - what I am proposing was
> src/newlib/libc/include/sys/types.h includes <cygwin/types.h> (which
> only overrides pthreads at the moment)
> src/winsup/cygwin/include/cygwin/types.h contains the types that were
> conflicting with rtems.
> Where should I #include the rtems header from?

src/newlib/libc/include/sys/types.h should include <sys/pthreadtypes.h>.  Ideally, this can be
protected by a check for #if defined (_POSIX_THREADS) in which case <sys/features.h> must be
included outside of the RTEMS check and src/newlib/libc/include/sys/features.h must be updated to
set _POSIX_THREADS for Cygwin.

A default src/newlib/libc/include/sys/pthreadtypes.h can be made which has defaults for all of the
pthread types (your generic void * types) or alternatively these types can be put in

Put the RTEMS pthread type stuff from sys/types.h into src/newlib/libc/sys/rtems/sys/pthreadtypes.h 
(no need for RTEMS markers and you should bring along the #include <sys/sched.h>).

If you are ok with the PTHREAD constants from sys/types.h then put them into pthread.h where they
belong.  If there is conflict between RTEMS and Cygwin for the values of the constants, then add __
versions in the appropriate system-specific pthreadtypes.h and add a check in pthread.h to allow
overriding the constants with their __ versions.

-- Jeff J.

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