I'm wondering which xcache functions are atomic. I know thatxcache_inc() andxcache_dec() are both atomic. I dont know ifxcache_get() andxcache_unset() are atomic.
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Answer
Solution:
The Feature List says that XCache supports "atomic get/set/inc/dec".
So
getis atomic, whatever that means. (It probably just means thatgetnever returns an in-between value, which is more or less the same thing as atomicset.)Also, since
setis atomic, I see no reason whyunsetwouldn't be atomic, too.