[En-Nut-Discussion] Not fixed!!!: Re: confirmed!!! Re: NutOS 4.4.0 on ARM7: possibly bug in NutEnterCritical / NutExitCritical

[Alain M.]

Ole Reinhardt escreveu:
> 
> So I would suggest to leave NutEnterCritical / NutExitCritical and
> declacre them as deprecated.
> 
> Two new Functions
> 
> NutEnterCriticalWithFlags(&flags)
> NutExitCriticalWithFlags(flags)

Is this a typo that the second line does not have "(&flags)"??

May I suggest that more than one option be available? Due to ARM's 
pipeline structure, a local memory takes too many cicles to write/read, 
so there could be:

1) a stack version, could be the old one and to be used with care,
2) a register version. Question: how to make sure it goes to a resister? 
This would be the fastest version, good for ISR.
3) a memory variable version, 100% safe, and leave it to the compiler to 
optimize to register if possible at all. It could even allocate it's own 
temorary variable.

(1) and (2) would come with big warnings, leaving only (3) for most 
novice programers...

Alain