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Re: [tsan] Instrument atomics
On Tue, Nov 27, 2012 at 12:47:50PM +0400, Dmitry Vyukov wrote:
> Yes, you are right.
> I think I've done them atomically initially because of things like
> FUTEX_WAKE_OP. I will fix that.
Any progress on that?
BTW, the current
template<typename T> T func_nand(T v, T op) {
return ~v & op;
}
is wrong not just by not being atomic (similarly to others), but
furthermore because __sync_fetch_and_nand (and __atomic etc.) are
return ~(v & op);
instead (GCC < 4.4 did it wrongly as ~v & op; though).
Jakub