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Re: Latest 64 bit test stuff on sourceware


On Feb 18 09:09, Ken Brown wrote:
> On 2/18/2013 7:12 AM, Corinna Vinschen wrote:
> >On Feb 16 22:47, Ken Brown wrote:
> >>On 2/16/2013 5:17 PM, Peter Rosin wrote:
> >>>3. The config.status scripts generated by the configure scrips
> >>>I have tested are not working (all Makefiles end up empty), but
> >>>I suspect that's some issue between autoconf and dash. So far it
> >>>has worked to run ./config.status from plain old non-64-cygwin
> >>>between configure and make.
> >>
> >>I made a first attempt to build emacs.  I had the same problem as
> >>Peter with all Makefiles being empty.  In addition, the configure
> >>test for mktime (attached) fails; CPU usage spins up to 25% (one
> >>core), and the program has to be killed from the Task Manager.
> >>
> >>Ken
> >
> >Oh well.  I don't know how to "fix" this, other than by ripping out
> >the entire localtime/mktime implementation and replacing it with
> >something new.
> >
> >The reason here is the testcase itself:
> >[...]
> >So what it does is calling localtime with a time_t value set to
> >time_t_max.  That's 0x7fffffff on i686, which manages to do the job in
> >less than 60 seconds.  On 64 bit, time_t_max is 0x7fffffffffffffff.
> >That's roughly 2^32 times bigger than the 32 bit value, but the 64 bit
> >CPU isn't 2^32 times faster, unfortunately.
> 
> OK.  But is there something else going on in addition to that?  In
> my tests, the program doesn't terminate after 60 seconds.  Moreover,
> it doesn't respond to `kill -9'; I have to kill it from the Task
> Manager.

It's running in an endless loop within an internal function.  That
defeats any signals.


Corinna

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


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