Atomic operations on the ARM

[Vladimir Serov]

Hi Richard,

Did You encounter real program failure due to the discussed issue with 
atomicity.h on ARM ? Or this is purely logical conclusion that it's unsafe ?

I'm asking this question , becouse mentioned code is only vulnerable to 
the double user process scheduling out in the period of one (!) 
instruction execution time ( between swp and cmp instructions and 
between cmp and swpne instructions ).

This looks impossible for me at least on Linux and uniprocessor. Am i 
wrong ?

Regards, Vladimir.