Re: X15 alpha release: as fast as TUX but in user space (fwd)

Keith Owens
2001-05-03T07:45:28Z

On 03 May 2001 09:13:00 +0200,
kaih@khms.westfalen.de (Kai Henningsen) wrote:
>pavel@suse.cz (Pavel Machek) wrote on 30.04.01 in <20010430104231.C3294@bug.ucw.cz>:
>
>> PS: Hmm, how do you do timewarp for just one userland appliation with
>> this installed?
>
>1. What on earth for?

Y10K testing :)

>2. How do you do it today, and why wouldn't that work?

LD_PRELOAD on a library that overrides gettimeofday(). I can see no
reason why that would not continue to work. What would stop working
are timewarp modules that intercepted the syscall at the kernel level
instead of user space level.