[cpp-threads] modes, pass 2

[Alexander Terekhov]

On 5/8/05, Peter Dimov <pdimov at mmltd.net> wrote:
[...]
> Infallible CAS: do { if( LL() != old ) return false; } while( !SC(new) );
> return true;
> Fallible CAS: return LL() == old && SC(new);

I'd rather expose (compile time feature testing required) LL/LR and SC.

regards,
alexander.