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 But atomic to what extent
Atomic Keerati (@atomic.keerati) • Threads, Say more
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. 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.
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. Atomic_shared_ptr<> as a distinct type has an important efficiency advantage over the functions in [util.smartptr.shared.atomic] — it can simply store an additional atomic_flag (or similar) for the internal spinlock as usual for atomic<bigstruct>.
Since std::atomic_init has been deprecated in c++20, here is a reimplementation which does not raise deprecation warnings, if you for some reason want to keep doing this. The last two are identical Atomic is the default behavior (note that it is not actually a keyword
