Question

I’m wondering which xcache functions are atomic. I know that xcache_inc() and xcache_dec() are both atomic. I dont know if xcache_get() and xcache_unset() are atomic.

Answer 1

The Feature List says that XCache supports “atomic get/set/inc/dec”.

So get is atomic, whatever that means. (It probably just means that get never returns an in-between value, which is more or less the same thing as atomic set.)

Also, since set is atomic, I see no reason why unset wouldn’t be atomic, too.