[PATCH] clock_nanosleep(2), pthread_condattr_[gs]etclock(3)

[Corinna Vinschen]

On Jul 20 17:03, Yaakov (Cygwin/X) wrote:
> On Wed, 2011-07-20 at 16:11 +0200, Corinna Vinschen wrote:
> > (*) Does it also influence pthread_cond_timedwait?  This information seems
> >     to be missing in SUSv4.
> 
> The last paragraph of RATIONALE -> Timed Wait Semantics states:
> 
> > For cases when the system clock is advanced discontinuously by an
> > operator, it is expected that implementations process any timed wait
> > expiring at an intervening time as if that time had actually occurred.
> 
> Of course, this would be an old problem with pthread_cond_timedwait().

Thanks, I missed that.

> 2011-07-20  Yaakov Selkowitz  <yselkowitz@...>
> 
> 	* sysconf.cc (sca): Set _SC_CLOCK_SELECTION to _POSIX_CLOCK_SELECTION.
> 
> 2011-07-20  Yaakov Selkowitz  <yselkowitz@...>
> 
> 	* cygwin.din (pthread_condattr_getclock): Export.
> 	(pthread_condattr_setclock): Export.
> 	* posix.sgml (std-notimpl): Move pthread_condattr_getclock and
> 	pthread_condattr_setclock from here...
> 	(std-susv4): ... to here.
> 	* thread.cc: (pthread_condattr::pthread_condattr): Initialize clock_id.
> 	(pthread_cond::pthread_cond): Initialize clock_id.
> 	(pthread_cond_timedwait): Use clock_gettime() instead of gettimeofday()
> 	in order to support all allowed clocks.
> 	(pthread_condattr_getclock): New function.
> 	(pthread_condattr_setclock): New function.
> 	* thread.h (class pthread_condattr): Add clock_id member.
> 	(class pthread_cond): Ditto.
> 	* include/pthread.h: Remove obsolete comment.
> 	(pthread_condattr_getclock): Declare.
> 	(pthread_condattr_setclock): Declare.

This patch looks good, please apply.


Thanks,
Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat