Corinna Vinschen vinschen@redhat.com
Tue Mar 3 19:42:00 GMT 2015

On Mar  3 11:51, Joel Sherrill wrote:
> This patch is correct per POSIX.
> http://pubs.opengroup.org/onlinepubs/009695399/functions/clock.html
> Gedare addressed the path to our clock() implementation and that should
> now be consistent.
> I am curious how the #else targets are correct given the POSIX definition.

That depends on the requirement for backward compat.

What's worse is that toplevel time.h uses a non-POSIX default definition
for _CLOCKS_PER_SEC_.  Unfortunately this, too, is required for backward

The Cygwin source uses CLOCKS_PER_SEC to compute the right values in
times(2), for instance, and applications may depend on that.  I added a
change to Cygwin to allow new applications to use another CLOCKS_PER_SEC
value while retaining backward compatibility for existing applications
to my TODO list.

> For RTEMS, is this OK to apply?

With the change I mentioned, yes.


Corinna Vinschen
Cygwin Maintainer
Red Hat
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