If you want to make sure to modify a value in an atomic way, you should use the appropiate methods, like interlocked* on windows Same for all the other routines If you want atomic operations, you should use the appropiate calls, not the. In the effective java book, it states The language specification guarantees that reading or writing a variable is atomic unless the variable is of type long or double [jls, 17.4.7] Note that atomic is contextual
In this case, the upsert operation only needs to be atomic with respect to operations on the answers table in the database The computer can be free to do other things as long as they don't affect (or are affected by) the result of what upsert is trying to do. I remember i came across certain types in the c language called atomic types, but we have never studied them So, how do they differ from regular types like int,float,double,long etc., and what are. Std::shared_ptr has specializations for atomic operations like atomic_compare_exchange_weak and family, but i cannot find documentation on equivalent specializations for std::unique_ptr. Fortunately, the value initializing constructor of an integral atomic is constexpr, so the above leads to constant initialization
“assignments and simple arithmetic operations are not atomic” So, what does it exactly mean? The last two are identical Atomic is the default behavior (note that it is not actually a keyword Assuming that you are @synthesizing the method implementations, atomic vs Rather than act like an inscrutable oracle which tries to trick querants into misunderstanding the answers to questions, i have drilled a little deeper than the question strictly calls for
This isn't a quiz show or a hostile cross. 4 c++20 includes specializations for atomic<float> and atomic<double> Can anyone here explain for what practical purpose this should be good for?
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