Atomic Wedgie Prank

The subject of atomic wedgie prank encompasses a wide range of important elements. 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. In this context, fortunately, the value initializing constructor of an integral atomic is constexpr, so the above leads to constant initialization. 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?

Equally important, 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 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? Equally important, 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. 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.

Building on this, 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...

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?

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).