[U-Boot] [PATCH] sandbox: Add timer simulation

[Matthias Weißer]

Am 28.11.2011 23:57, schrieb Mike Frysinger:
> On Monday 28 November 2011 16:40:29 Matthias Weisser wrote:
>> Making sleep command work
> 
> i like the idea, but using clock_xxx funcs makes me sad (generally requires a 
> "newerish" glibc and -lrt).  my only alternative proposal is to use usec's 
> with gettimeofday ... maybe that's good enough ?  although we'll probably need 
> to add nsec support eventually anyways for the newer timer code ...

I would like to stay with clock_gettime(CLOCK_MONOTONIC, ...) as the
value isn't subjected to change when wall time is changed. Still there
are chances to get wrong (non monotonic) values when NTP adjusts
frequencies. Maybe some ifdef magic can be used to even use
CLOCK_MONOTONIC_RAW if it is available and fall back to gettimeofday in
case of older systems. The only thing would be then -lrt on the linker
command line which has to be sorted out somehow.

> feel like wiring up timer_get_us() too ?

Will do in a v2.

Matthias