Re: [Linux-cluster] [PATCH] Get rid of non portable _syscall0

[Lon Hohberger <lhh redhat com>]

On Sat, 2005-06-11 at 02:37 +1000, Adam Conrad wrote:
> Lon Hohberger wrote:
> >
> > Similarly, the code is written to rely on the documented behavior.  So,
> > when it's not available, maybe the wrapper should return
> > (pid_t)pthread_self() instead of -ENOSYS?
> 
> I threw -ENOSYS in mostly as a sanity check.  If the suite is meant to be
> portable to other POSIX systems, you'll certainly want to do something
> else if gettid() doesn't exist, since it's linux-specific.

Well, linux-cluster is, um, rather linux-specific. ;)

Ok, so, I'll add a #warn and return pthread_self() for now - since it
also doesn't fail and returns a thread-specific identifier (which is the
primary reason we used gettid()...).

> The only aim
> of the patch was to shoot for portability accross all Linux platforms
> (many of which don't have _syscall magic macros, and word on the street is
> that we may not have them on any arches in the future).

That can only be a good thing.

-- Lon