In 'process_arithmetic_command' function: We first do item_get from slabs and then do add_delta to incr/decr the value.
My question is: Is this atomic in multithread mode? Item_get is atomic and so is add_delta because they are protected by mutex. But the entire two operations seems NOT atomic. Two threads can both do item_get with same key, then both incr it, and write back. Anybody can tell me whether it is a bug or not? Regards, Steve Chu
