Re: [hatari-devel] Timestamp problem with GEMDOS drive

[Eero Tamminen <oak@xxxxxxxxxxxxxx>]

Hi,

I added the --gemdos-time option to Hatari repo:
https://hg.tuxfamily.org/mercurialroot/hatari/hatari/rev/55dc2366fed0
https://hg.tuxfamily.org/mercurialroot/hatari/hatari/rev/a2beeb7d7a4a

Note that while same Hatari instance is running, it's better
to do modifications only on host, or on Atari side.  Then you
know which side's clock you should tell Hatari to use for
file timestamps.

(This of course assumes that rest of the files have reasonable 
timestamps when you're using something that relies on timestamps
to do things.)


	- Eero

On 02/19/2017 10:25 PM, Uwe Seimet wrote:
> > On 02/18/2017 10:06 PM, Uwe Seimet wrote:
> > > I see, but this means that in particular make-like processes, which rely
> > > on timestamps, do not work anymore. Pure C, for instance, now constantly
> > > recompiles files without any need. This very inconvenient. Can this
> > > somehow be fixed?
> >
> > Are you using MegaST/e which takes time from host?
>
> No, I'm using the TT emulation.
>
> > You could try ifdeffing out utime() call from
> > gemdos.c::GemDOS_SetFileInformation().
>
> Yes, removing that call fixes the problem.
>
> > If that works fine, propose a commandline option
> > for Hatari GEMDOS HD emulation.  Maybe:
> > 	--gemdos-hosttime <bool>
> > or:
> > 	--gemdos-time <host/atari>
> > ?
>
> I'm fine with any option, as long as it results in a proper GEMDOS HD
> emulation time handling ;-).
>
> Take care
>
> Uwe
> > 	- Eero
> >
> > > Best regards
> > >
> > > Uwe
> > >
> > > > ----- Uwe Seimet wrote:
> > > > > Hi,
> > > > >
> > > > > With the current development version I observe wrong timestamps when
> > > > > compiling with Pure C. A C source file A.C has the timestamp 10:21.
> > > > > After compiling it to A.O the resulting object file has the timestamp
> > > > > 10:20, i.e. it is not newer but older than the source file.
> > > > > This is reproducable. The desktop shows that .O files are a minute older
> > > > > than the .C files they were compiled from.
> > > > >
> > > > > Take care
> > > > >
> > > > > Uwe
> > > > AFAIK
> > > > Hatari changed how it deals with the time of day.
> > > > Hatari grabs the current time when it is started, then
> > > > increments the time in "emulator time". This is causing
> > > > a conflict with the "actual time" as regards time stamps.