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Re: Adjustable wallclock (get/settimeofday, adjtimex)?
- From: Grant Edwards <grant dot b dot edwards at gmail dot com>
- To: ecos-discuss at sources dot redhat dot com
- Date: Mon, 27 Jun 2011 14:16:58 +0000 (UTC)
- Subject: [ECOS] Re: Adjustable wallclock (get/settimeofday, adjtimex)?
- References: <4E07AFED.6040405@meduna.org>
On 2011-06-26, Stanislav Meduna <stano@meduna.org> wrote:
> Hi,
>
> the gettimeofday method in compat/posix is currently implemented
> based on cyg_current_time(), settimeofday is missing.
>
> If I understand it correctly the cyg_current_time() is also
> used for timeout processing all over the code so messing
> with its base is not a good idea.
When I needed to adjust the time to keep it in sync with a real-time
clock, I did it at a lower level by adding hooks into the target's HAL
code that allowed me to gradually slew the cyg_current_time() value by
adjusting the length of a system tick by small amounts.
--
Grant Edwards grant.b.edwards Yow! I request a weekend in
at Havana with Phil Silvers!
gmail.com
--
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