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] Assuming that you are @synthesizing the method implementations, atomic vs Fortunately, the value initializing constructor of an integral atomic is constexpr, so the above leads to constant initialization
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But atomic to what extent
To my understanding an operation can be atomic
What exactly is meant by making an object atomic You can declare an atomic integer like this The _atomic keyword can be used in the form _atomic(t), where t is a type, as a type specifier equivalent to _atomic t Declares x and y with the same type, even if t is a pointer type
This allows for trivial c++0x compatibility with a c++ only. The definition of atomic is hazy The current wikipedia article on first nf (normal form) section atomicity actually quotes from the introductory parts above. 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.
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. Std::atomic is new feature introduced by c++11 but i can't find much tutorial on how to use it correctly
So are the following practice common and efficient One practice i used is we have a buff. The last two are identical Atomic is the default behavior (note that it is not actually a keyword
