Atomic Bomb Vs Nuke

When exploring atomic bomb vs nuke, it's essential to consider various aspects and implications. What does "atomic" mean in programming? 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]. c++ - How to implement an atomic counter - Stack Overflow. Fortunately, the value initializing constructor of an integral atomic is constexpr, so the above leads to constant initialization.

This perspective suggests that, otherwise you'd want to make it -say- a static member of a class that is wrapping this and put the initialization somewhere else. What are atomic operations for newbies? 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. c++ - What exactly is std::atomic?

Objects of atomic types are the only C++ objects that are free from data races; that is, if one thread writes to an atomic object while another thread reads from it, the behavior is well-defined. In this context, in addition, accesses to atomic objects may establish inter-thread synchronization and order non-atomic memory accesses as specified by std::memory_order. Is there a difference between the _Atomic type qualifier and type ....

Why the standard make that difference? It's important to note that, it seems as both designate, in the same way, an atomic type. When do I really need to use atomic<bool> instead of bool?.

You need atomic<bool> to avoid race-conditions. From another angle, a race-condition occurs if two threads access the same memory location, and at least one of them is a write operation. If your program contains race-conditions, the behavior is undefined. sql - What is atomicity in dbms - Stack Overflow. Furthermore, the definition of atomic is hazy; a value that is atomic in one application could be non-atomic in another.

For a general guideline, a value is non-atomic if the application deals with only a part of the value. Eg: The current Wikipedia article on First NF (Normal Form) section Atomicity actually quotes from the introductory parts above. What are atomic types in the C language?

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... In relation to this, c++ - How to use std::atomic efficiently - Stack Overflow.

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? In this context, one practice I used is we have a buff... What's the difference between the atomic and nonatomic attributes?.

The last two are identical; "atomic" is the default behavior (note that it is not actually a keyword; it is specified only by the absence of nonatomic -- atomic was added as a keyword in recent versions of llvm/clang).